5ef06839f5
These were amongst the last users of struct file_operations:ioctl Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
4355 lines
123 KiB
C
4355 lines
123 KiB
C
/******************************************************************************
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* *
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* easycap_main.c *
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* *
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* Video driver for EasyCAP USB2.0 Video Capture Device DC60 *
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* *
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* *
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******************************************************************************/
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/*
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*
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* Copyright (C) 2010 R.M. Thomas <rmthomas@sciolus.org>
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*
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*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* The software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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/*****************************************************************************/
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#include "easycap.h"
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#include "easycap_standard.h"
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int easycap_debug;
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module_param(easycap_debug, int, S_IRUGO | S_IWUSR);
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/*---------------------------------------------------------------------------*/
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/*
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* PARAMETERS APPLICABLE TO ENTIRE DRIVER, I.E. BOTH VIDEO AND AUDIO
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*/
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/*---------------------------------------------------------------------------*/
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struct usb_device_id easycap_usb_device_id_table[] = {
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{ USB_DEVICE(USB_EASYCAP_VENDOR_ID, USB_EASYCAP_PRODUCT_ID) },
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{ }
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};
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MODULE_DEVICE_TABLE(usb, easycap_usb_device_id_table);
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struct usb_driver easycap_usb_driver = {
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.name = "easycap",
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.id_table = easycap_usb_device_id_table,
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.probe = easycap_usb_probe,
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.disconnect = easycap_usb_disconnect,
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};
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/*---------------------------------------------------------------------------*/
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/*
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* PARAMETERS USED WHEN REGISTERING THE VIDEO INTERFACE
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*
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* NOTE: SOME KERNELS IGNORE usb_class_driver.minor_base, AS MENTIONED BY
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* CORBET ET AL. "LINUX DEVICE DRIVERS", 3rd EDITION, PAGE 253.
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* THIS IS THE CASE FOR OpenSUSE.
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*/
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/*---------------------------------------------------------------------------*/
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const struct file_operations easycap_fops = {
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.owner = THIS_MODULE,
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.open = easycap_open,
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.release = easycap_release,
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.unlocked_ioctl = easycap_ioctl,
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.poll = easycap_poll,
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.mmap = easycap_mmap,
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.llseek = no_llseek,
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};
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struct vm_operations_struct easycap_vm_ops = {
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.open = easycap_vma_open,
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.close = easycap_vma_close,
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.fault = easycap_vma_fault,
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};
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struct usb_class_driver easycap_class = {
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.name = "usb/easycap%d",
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.fops = &easycap_fops,
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.minor_base = USB_SKEL_MINOR_BASE,
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};
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/*vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv*/
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#if defined(EASYCAP_IS_VIDEODEV_CLIENT)
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#if defined(EASYCAP_NEEDS_V4L2_FOPS)
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const struct v4l2_file_operations v4l2_fops = {
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.owner = THIS_MODULE,
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.open = easycap_open_noinode,
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.release = easycap_release_noinode,
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.unlocked_ioctl = easycap_ioctl,
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.poll = easycap_poll,
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.mmap = easycap_mmap,
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};
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#endif /*EASYCAP_NEEDS_V4L2_FOPS*/
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int video_device_many /*=0*/;
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struct video_device *pvideo_array[VIDEO_DEVICE_MANY], *pvideo_device;
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#endif /*EASYCAP_IS_VIDEODEV_CLIENT*/
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/*^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^*/
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/*--------------------------------------------------------------------------*/
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/*
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* PARAMETERS USED WHEN REGISTERING THE AUDIO INTERFACE
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*/
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/*--------------------------------------------------------------------------*/
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const struct file_operations easysnd_fops = {
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.owner = THIS_MODULE,
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.open = easysnd_open,
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.release = easysnd_release,
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.unlocked_ioctl = easysnd_ioctl,
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.read = easysnd_read,
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.llseek = no_llseek,
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};
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struct usb_class_driver easysnd_class = {
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.name = "usb/easysnd%d",
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.fops = &easysnd_fops,
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.minor_base = USB_SKEL_MINOR_BASE,
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};
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/****************************************************************************/
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/*--------------------------------------------------------------------------*/
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/*
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* IT IS NOT APPROPRIATE FOR easycap_open() TO SUBMIT THE VIDEO URBS HERE,
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* BECAUSE THERE WILL ALWAYS BE SUBSEQUENT NEGOTIATION OF TV STANDARD AND
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* FORMAT BY IOCTL AND IT IS INADVISABLE TO HAVE THE URBS RUNNING WHILE
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* REGISTERS OF THE SA7113H ARE BEING MANIPULATED.
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*
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* THE SUBMISSION OF VIDEO URBS IS THEREFORE DELAYED UNTIL THE IOCTL COMMAND
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* STREAMON IS RECEIVED.
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*/
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/*--------------------------------------------------------------------------*/
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/*vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv*/
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#if defined(EASYCAP_IS_VIDEODEV_CLIENT)
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int
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easycap_open_noinode(struct file *file)
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{
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return easycap_open((struct inode *)NULL, file);
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}
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#endif /*EASYCAP_IS_VIDEODEV_CLIENT*/
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/*^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^*/
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int
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easycap_open(struct inode *inode, struct file *file)
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{
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#if (!defined(EASYCAP_IS_VIDEODEV_CLIENT))
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struct usb_interface *pusb_interface;
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#endif /*EASYCAP_IS_VIDEODEV_CLIENT*/
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struct usb_device *p;
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struct easycap *peasycap;
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int i, k, m, rc;
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JOT(4, "\n");
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SAY("==========OPEN=========\n");
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peasycap = (struct easycap *)NULL;
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#if (!defined(EASYCAP_IS_VIDEODEV_CLIENT))
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if ((struct inode *)NULL == inode) {
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SAY("ERROR: inode is NULL.\n");
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return -EFAULT;
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}
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pusb_interface = usb_find_interface(&easycap_usb_driver, iminor(inode));
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if (!pusb_interface) {
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SAY("ERROR: pusb_interface is NULL.\n");
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return -EFAULT;
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}
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peasycap = usb_get_intfdata(pusb_interface);
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/*vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv*/
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#else
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for (i = 0; i < video_device_many; i++) {
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pvideo_device = pvideo_array[i];
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if ((struct video_device *)NULL != pvideo_device) {
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peasycap = (struct easycap *)video_get_drvdata(pvideo_device);
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break;
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}
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}
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/*^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^*/
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#endif /*EASYCAP_IS_VIDEODEV_CLIENT*/
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if ((struct easycap *)NULL == peasycap) {
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SAY("MISTAKE: peasycap is NULL\n");
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return -EFAULT;
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}
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file->private_data = peasycap;
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/*---------------------------------------------------------------------------*/
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/*
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* INITIALIZATION
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*/
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/*---------------------------------------------------------------------------*/
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JOT(4, "starting initialization\n");
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for (k = 0; k < FRAME_BUFFER_MANY; k++) {
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for (m = 0; m < FRAME_BUFFER_SIZE/PAGE_SIZE; m++)
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memset(peasycap->frame_buffer[k][m].pgo, 0, PAGE_SIZE);
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}
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p = peasycap->pusb_device;
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if ((struct usb_device *)NULL == p) {
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SAY("ERROR: peasycap->pusb_device is NULL\n");
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return -EFAULT;
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} else {
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JOT(16, "0x%08lX=peasycap->pusb_device\n", \
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(long int)peasycap->pusb_device);
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}
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rc = wakeup_device(peasycap->pusb_device);
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if (0 == rc)
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JOT(8, "wakeup_device() OK\n");
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else {
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SAY("ERROR: wakeup_device() returned %i\n", rc);
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return -EFAULT;
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}
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rc = setup_stk(p); peasycap->input = 0;
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if (0 == rc)
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JOT(8, "setup_stk() OK\n");
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else {
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SAY("ERROR: setup_stk() returned %i\n", rc);
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return -EFAULT;
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}
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rc = setup_saa(p);
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if (0 == rc)
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JOT(8, "setup_saa() OK\n");
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else {
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SAY("ERROR: setup_saa() returned %i\n", rc);
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return -EFAULT;
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}
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rc = check_saa(p);
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if (0 == rc)
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JOT(8, "check_saa() OK\n");
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else if (-8 < rc)
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SAY("check_saa() returned %i\n", rc);
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else {
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SAY("ERROR: check_saa() returned %i\n", rc);
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return -EFAULT;
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}
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peasycap->standard_offset = -1;
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/*---------------------------------------------------------------------------*/
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#if defined(PREFER_NTSC)
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rc = adjust_standard(peasycap, V4L2_STD_NTSC_M);
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if (0 == rc)
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JOT(8, "adjust_standard(.,NTSC_M) OK\n");
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else {
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SAY("ERROR: adjust_standard(.,NTSC_M) returned %i\n", rc);
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return -EFAULT;
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}
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rc = adjust_format(peasycap, 640, 480, V4L2_PIX_FMT_UYVY, V4L2_FIELD_NONE, \
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false);
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if (0 <= rc)
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JOT(8, "adjust_format(.,640,480,UYVY) OK\n");
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else {
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SAY("ERROR: adjust_format(.,640,480,UYVY) returned %i\n", rc);
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return -EFAULT;
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}
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#else
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rc = adjust_standard(peasycap, \
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(V4L2_STD_PAL_B | V4L2_STD_PAL_G | V4L2_STD_PAL_H | \
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V4L2_STD_PAL_I | V4L2_STD_PAL_N));
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if (0 == rc)
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JOT(8, "adjust_standard(.,PAL_BGHIN) OK\n");
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else {
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SAY("ERROR: adjust_standard(.,PAL_BGHIN) returned %i\n", rc);
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return -EFAULT;
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}
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rc = adjust_format(peasycap, 640, 480, V4L2_PIX_FMT_UYVY, V4L2_FIELD_NONE, \
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false);
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if (0 <= rc)
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JOT(8, "adjust_format(.,640,480,uyvy,false) OK\n");
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else {
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SAY("ERROR: adjust_format(.,640,480,uyvy,false) returned %i\n", rc);
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return -EFAULT;
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}
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#endif /* !PREFER_NTSC*/
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/*---------------------------------------------------------------------------*/
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rc = adjust_brightness(peasycap, -8192);
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if (0 != rc) {
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SAY("ERROR: adjust_brightness(default) returned %i\n", rc);
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return -EFAULT;
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}
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rc = adjust_contrast(peasycap, -8192);
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if (0 != rc) {
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SAY("ERROR: adjust_contrast(default) returned %i\n", rc);
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return -EFAULT;
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}
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rc = adjust_saturation(peasycap, -8192);
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if (0 != rc) {
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SAY("ERROR: adjust_saturation(default) returned %i\n", rc);
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return -EFAULT;
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}
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rc = adjust_hue(peasycap, -8192);
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if (0 != rc) {
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SAY("ERROR: adjust_hue(default) returned %i\n", rc);
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return -EFAULT;
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}
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/*---------------------------------------------------------------------------*/
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rc = usb_set_interface(peasycap->pusb_device, peasycap->video_interface, \
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peasycap->video_altsetting_on);
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if (0 == rc)
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JOT(8, "usb_set_interface(.,%i,%i) OK\n", peasycap->video_interface, \
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peasycap->video_altsetting_on);
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else {
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SAY("ERROR: usb_set_interface() returned %i\n", rc);
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return -EFAULT;
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}
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rc = start_100(p);
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if (0 == rc)
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JOT(8, "start_100() OK\n");
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else {
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SAY("ERROR: start_100() returned %i\n", rc);
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return -EFAULT;
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}
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peasycap->video_isoc_sequence = VIDEO_ISOC_BUFFER_MANY - 1;
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peasycap->video_idle = 0;
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peasycap->video_junk = 0;
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for (i = 0; i < 180; i++)
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peasycap->merit[i] = 0;
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peasycap->video_eof = 0;
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peasycap->audio_eof = 0;
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do_gettimeofday(&peasycap->timeval7);
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peasycap->fudge = 0;
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JOT(4, "finished initialization\n");
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return 0;
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}
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/*****************************************************************************/
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int
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submit_video_urbs(struct easycap *peasycap)
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{
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struct data_urb *pdata_urb;
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struct urb *purb;
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struct list_head *plist_head;
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int j, isbad, m, rc;
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int isbuf;
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if ((struct list_head *)NULL == peasycap->purb_video_head) {
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SAY("ERROR: peasycap->urb_video_head uninitialized\n");
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return -EFAULT;
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}
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if ((struct usb_device *)NULL == peasycap->pusb_device) {
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SAY("ERROR: peasycap->pusb_device is NULL\n");
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return -EFAULT;
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}
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if (!peasycap->video_isoc_streaming) {
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JOT(4, "submission of all video urbs\n");
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if (0 != ready_saa(peasycap->pusb_device)) {
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SAY("ERROR: not ready to capture after waiting " \
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"one second\n");
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SAY("..... continuing anyway\n");
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}
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isbad = 0; m = 0;
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list_for_each(plist_head, (peasycap->purb_video_head)) {
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pdata_urb = list_entry(plist_head, struct data_urb, list_head);
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if (NULL != pdata_urb) {
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purb = pdata_urb->purb;
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if (NULL != purb) {
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isbuf = pdata_urb->isbuf;
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purb->interval = 1;
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purb->dev = peasycap->pusb_device;
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purb->pipe = \
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usb_rcvisocpipe(peasycap->pusb_device,\
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peasycap->video_endpointnumber);
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purb->transfer_flags = URB_ISO_ASAP;
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purb->transfer_buffer = \
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peasycap->video_isoc_buffer[isbuf].pgo;
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purb->transfer_buffer_length = \
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peasycap->video_isoc_buffer_size;
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purb->complete = easycap_complete;
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purb->context = peasycap;
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purb->start_frame = 0;
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purb->number_of_packets = \
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peasycap->video_isoc_framesperdesc;
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for (j = 0; j < peasycap->\
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video_isoc_framesperdesc; j++) {
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purb->iso_frame_desc[j].\
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offset = j * \
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peasycap->\
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video_isoc_maxframesize;
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purb->iso_frame_desc[j].\
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length = peasycap->\
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video_isoc_maxframesize;
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}
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rc = usb_submit_urb(purb, GFP_KERNEL);
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if (0 != rc) {
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isbad++;
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SAY("ERROR: usb_submit_urb() failed " \
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"for urb with rc:\n");
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switch (rc) {
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case -ENOMEM: {
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SAY("ENOMEM\n");
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break;
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}
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case -ENODEV: {
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SAY("ENODEV\n");
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break;
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}
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case -ENXIO: {
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SAY("ENXIO\n");
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break;
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}
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case -EINVAL: {
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SAY("EINVAL\n");
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break;
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}
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case -EAGAIN: {
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SAY("EAGAIN\n");
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break;
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}
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case -EFBIG: {
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SAY("EFBIG\n");
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break;
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}
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case -EPIPE: {
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SAY("EPIPE\n");
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break;
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}
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case -EMSGSIZE: {
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SAY("EMSGSIZE\n");
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break;
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}
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default: {
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SAY("unknown error code %i\n",\
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rc);
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break;
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}
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}
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} else {
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m++;
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}
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} else {
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isbad++;
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}
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} else {
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isbad++;
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}
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}
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if (isbad) {
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JOT(4, "attempting cleanup instead of submitting\n");
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list_for_each(plist_head, (peasycap->purb_video_head)) {
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pdata_urb = list_entry(plist_head, struct data_urb, \
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list_head);
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if (NULL != pdata_urb) {
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purb = pdata_urb->purb;
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if (NULL != purb)
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usb_kill_urb(purb);
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}
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}
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peasycap->video_isoc_streaming = 0;
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} else {
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peasycap->video_isoc_streaming = 1;
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JOT(4, "submitted %i video urbs\n", m);
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}
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} else {
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JOT(4, "already streaming video urbs\n");
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}
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return 0;
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}
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/*****************************************************************************/
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int
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kill_video_urbs(struct easycap *peasycap)
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{
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int m;
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struct list_head *plist_head;
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struct data_urb *pdata_urb;
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|
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if ((struct easycap *)NULL == peasycap) {
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SAY("ERROR: peasycap is NULL\n");
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return -EFAULT;
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}
|
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if (peasycap->video_isoc_streaming) {
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if ((struct list_head *)NULL != peasycap->purb_video_head) {
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peasycap->video_isoc_streaming = 0;
|
|
JOT(4, "killing video urbs\n");
|
|
m = 0;
|
|
list_for_each(plist_head, (peasycap->purb_video_head)) {
|
|
pdata_urb = list_entry(plist_head, struct data_urb, \
|
|
list_head);
|
|
if ((struct data_urb *)NULL != pdata_urb) {
|
|
if ((struct urb *)NULL != pdata_urb->purb) {
|
|
usb_kill_urb(pdata_urb->purb);
|
|
m++;
|
|
}
|
|
}
|
|
}
|
|
JOT(4, "%i video urbs killed\n", m);
|
|
} else {
|
|
SAY("ERROR: peasycap->purb_video_head is NULL\n");
|
|
return -EFAULT;
|
|
}
|
|
} else {
|
|
JOT(8, "%i=video_isoc_streaming, no video urbs killed\n", \
|
|
peasycap->video_isoc_streaming);
|
|
}
|
|
return 0;
|
|
}
|
|
/****************************************************************************/
|
|
/*vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv*/
|
|
#if defined(EASYCAP_IS_VIDEODEV_CLIENT)
|
|
int
|
|
easycap_release_noinode(struct file *file)
|
|
{
|
|
return easycap_release((struct inode *)NULL, file);
|
|
}
|
|
#endif /*EASYCAP_IS_VIDEODEV_CLIENT*/
|
|
/*^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^*/
|
|
/*--------------------------------------------------------------------------*/
|
|
int
|
|
easycap_release(struct inode *inode, struct file *file)
|
|
{
|
|
#if (!defined(EASYCAP_IS_VIDEODEV_CLIENT))
|
|
struct easycap *peasycap;
|
|
|
|
JOT(4, "\n");
|
|
|
|
peasycap = file->private_data;
|
|
if (NULL == peasycap) {
|
|
SAY("ERROR: peasycap is NULL.\n");
|
|
SAY("ending unsuccessfully\n");
|
|
return -EFAULT;
|
|
}
|
|
if (0 != kill_video_urbs(peasycap)) {
|
|
SAY("ERROR: kill_video_urbs() failed\n");
|
|
return -EFAULT;
|
|
}
|
|
JOT(4, "ending successfully\n");
|
|
/*vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv*/
|
|
#else
|
|
#
|
|
/*^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^*/
|
|
#endif /*EASYCAP_IS_VIDEODEV_CLIENT*/
|
|
|
|
return 0;
|
|
}
|
|
/****************************************************************************/
|
|
/*vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv*/
|
|
#if defined(EASYCAP_IS_VIDEODEV_CLIENT)
|
|
int
|
|
videodev_release(struct video_device *pvd)
|
|
{
|
|
struct easycap *peasycap;
|
|
int i, j, k;
|
|
|
|
JOT(4, "\n");
|
|
|
|
k = 0;
|
|
for (i = 0; i < video_device_many; i++) {
|
|
pvideo_device = pvideo_array[i];
|
|
if ((struct video_device *)NULL != pvideo_device) {
|
|
if (pvd->minor == pvideo_device->minor) {
|
|
peasycap = (struct easycap *)\
|
|
video_get_drvdata(pvideo_device);
|
|
if ((struct easycap *)NULL == peasycap) {
|
|
SAY("ERROR: peasycap is NULL\n");
|
|
SAY("ending unsuccessfully\n");
|
|
return -EFAULT;
|
|
}
|
|
if (0 != kill_video_urbs(peasycap)) {
|
|
SAY("ERROR: kill_video_urbs() failed\n");
|
|
return -EFAULT;
|
|
}
|
|
JOT(4, "freeing video_device structure: " \
|
|
"/dev/video%i\n", i);
|
|
kfree((void *)pvideo_device);
|
|
for (j = i; j < (VIDEO_DEVICE_MANY - 1); j++)
|
|
pvideo_array[j] = pvideo_array[j + 1];
|
|
video_device_many--; k++;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (!k) {
|
|
SAY("ERROR: lost video_device structure for %i=minor\n", pvd->minor);
|
|
SAY("cannot free: may cause memory leak\n");
|
|
SAY("ending unsuccessfully\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
JOT(4, "ending successfully\n");
|
|
return 0;
|
|
}
|
|
#endif /*EASYCAP_IS_VIDEODEV_CLIENT*/
|
|
/*^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^*/
|
|
/****************************************************************************/
|
|
/*--------------------------------------------------------------------------*/
|
|
/*
|
|
* THIS FUNCTION IS CALLED FROM WITHIN easycap_usb_disconnect().
|
|
* BY THIS STAGE THE DEVICE HAS ALREADY BEEN PHYSICALLY UNPLUGGED.
|
|
* peasycap->pusb_device IS NO LONGER VALID AND SHOULD HAVE BEEN SET TO NULL.
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
easycap_delete(struct kref *pkref)
|
|
{
|
|
int k, m, lost;
|
|
int allocation_video_urb, allocation_video_page, allocation_video_struct;
|
|
int allocation_audio_urb, allocation_audio_page, allocation_audio_struct;
|
|
int registered_video, registered_audio;
|
|
struct easycap *peasycap;
|
|
struct data_urb *pdata_urb;
|
|
struct list_head *plist_head, *plist_next;
|
|
|
|
JOT(4, "\n");
|
|
|
|
peasycap = container_of(pkref, struct easycap, kref);
|
|
if ((struct easycap *)NULL == peasycap) {
|
|
SAY("ERROR: peasycap is NULL: cannot perform deletions\n");
|
|
return;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* FREE VIDEO.
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
if ((struct list_head *)NULL != peasycap->purb_video_head) {
|
|
JOT(4, "freeing video urbs\n");
|
|
m = 0;
|
|
list_for_each(plist_head, (peasycap->purb_video_head)) {
|
|
pdata_urb = list_entry(plist_head, struct data_urb, list_head);
|
|
if (NULL == pdata_urb)
|
|
JOT(4, "ERROR: pdata_urb is NULL\n");
|
|
else {
|
|
if ((struct urb *)NULL != pdata_urb->purb) {
|
|
usb_free_urb(pdata_urb->purb);
|
|
pdata_urb->purb = (struct urb *)NULL;
|
|
peasycap->allocation_video_urb -= 1;
|
|
m++;
|
|
}
|
|
}
|
|
}
|
|
|
|
JOT(4, "%i video urbs freed\n", m);
|
|
/*---------------------------------------------------------------------------*/
|
|
JOT(4, "freeing video data_urb structures.\n");
|
|
m = 0;
|
|
list_for_each_safe(plist_head, plist_next, peasycap->purb_video_head) {
|
|
pdata_urb = list_entry(plist_head, struct data_urb, list_head);
|
|
if ((struct data_urb *)NULL != pdata_urb) {
|
|
kfree(pdata_urb); pdata_urb = (struct data_urb *)NULL;
|
|
peasycap->allocation_video_struct -= \
|
|
sizeof(struct data_urb);
|
|
m++;
|
|
}
|
|
}
|
|
JOT(4, "%i video data_urb structures freed\n", m);
|
|
JOT(4, "setting peasycap->purb_video_head=NULL\n");
|
|
peasycap->purb_video_head = (struct list_head *)NULL;
|
|
} else {
|
|
JOT(4, "peasycap->purb_video_head is NULL\n");
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
JOT(4, "freeing video isoc buffers.\n");
|
|
m = 0;
|
|
for (k = 0; k < VIDEO_ISOC_BUFFER_MANY; k++) {
|
|
if ((void *)NULL != peasycap->video_isoc_buffer[k].pgo) {
|
|
free_pages((unsigned long)\
|
|
(peasycap->video_isoc_buffer[k].pgo), \
|
|
VIDEO_ISOC_ORDER);
|
|
peasycap->video_isoc_buffer[k].pgo = (void *)NULL;
|
|
peasycap->allocation_video_page -= \
|
|
((unsigned int)(0x01 << VIDEO_ISOC_ORDER));
|
|
m++;
|
|
}
|
|
}
|
|
JOT(4, "isoc video buffers freed: %i pages\n", m * (0x01 << VIDEO_ISOC_ORDER));
|
|
/*---------------------------------------------------------------------------*/
|
|
JOT(4, "freeing video field buffers.\n");
|
|
lost = 0;
|
|
for (k = 0; k < FIELD_BUFFER_MANY; k++) {
|
|
for (m = 0; m < FIELD_BUFFER_SIZE/PAGE_SIZE; m++) {
|
|
if ((void *)NULL != peasycap->field_buffer[k][m].pgo) {
|
|
free_page((unsigned long)\
|
|
(peasycap->field_buffer[k][m].pgo));
|
|
peasycap->field_buffer[k][m].pgo = (void *)NULL;
|
|
peasycap->allocation_video_page -= 1;
|
|
lost++;
|
|
}
|
|
}
|
|
}
|
|
JOT(4, "video field buffers freed: %i pages\n", lost);
|
|
/*---------------------------------------------------------------------------*/
|
|
JOT(4, "freeing video frame buffers.\n");
|
|
lost = 0;
|
|
for (k = 0; k < FRAME_BUFFER_MANY; k++) {
|
|
for (m = 0; m < FRAME_BUFFER_SIZE/PAGE_SIZE; m++) {
|
|
if ((void *)NULL != peasycap->frame_buffer[k][m].pgo) {
|
|
free_page((unsigned long)\
|
|
(peasycap->frame_buffer[k][m].pgo));
|
|
peasycap->frame_buffer[k][m].pgo = (void *)NULL;
|
|
peasycap->allocation_video_page -= 1;
|
|
lost++;
|
|
}
|
|
}
|
|
}
|
|
JOT(4, "video frame buffers freed: %i pages\n", lost);
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* FREE AUDIO.
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
if ((struct list_head *)NULL != peasycap->purb_audio_head) {
|
|
JOT(4, "freeing audio urbs\n");
|
|
m = 0;
|
|
list_for_each(plist_head, (peasycap->purb_audio_head)) {
|
|
pdata_urb = list_entry(plist_head, struct data_urb, list_head);
|
|
if (NULL == pdata_urb)
|
|
JOT(4, "ERROR: pdata_urb is NULL\n");
|
|
else {
|
|
if ((struct urb *)NULL != pdata_urb->purb) {
|
|
usb_free_urb(pdata_urb->purb);
|
|
pdata_urb->purb = (struct urb *)NULL;
|
|
peasycap->allocation_audio_urb -= 1;
|
|
m++;
|
|
}
|
|
}
|
|
}
|
|
JOT(4, "%i audio urbs freed\n", m);
|
|
/*---------------------------------------------------------------------------*/
|
|
JOT(4, "freeing audio data_urb structures.\n");
|
|
m = 0;
|
|
list_for_each_safe(plist_head, plist_next, peasycap->purb_audio_head) {
|
|
pdata_urb = list_entry(plist_head, struct data_urb, list_head);
|
|
if ((struct data_urb *)NULL != pdata_urb) {
|
|
kfree(pdata_urb); pdata_urb = (struct data_urb *)NULL;
|
|
peasycap->allocation_audio_struct -= \
|
|
sizeof(struct data_urb);
|
|
m++;
|
|
}
|
|
}
|
|
JOT(4, "%i audio data_urb structures freed\n", m);
|
|
JOT(4, "setting peasycap->purb_audio_head=NULL\n");
|
|
peasycap->purb_audio_head = (struct list_head *)NULL;
|
|
} else {
|
|
JOT(4, "peasycap->purb_audio_head is NULL\n");
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
JOT(4, "freeing audio isoc buffers.\n");
|
|
m = 0;
|
|
for (k = 0; k < AUDIO_ISOC_BUFFER_MANY; k++) {
|
|
if ((void *)NULL != peasycap->audio_isoc_buffer[k].pgo) {
|
|
free_pages((unsigned long)\
|
|
(peasycap->audio_isoc_buffer[k].pgo), \
|
|
AUDIO_ISOC_ORDER);
|
|
peasycap->audio_isoc_buffer[k].pgo = (void *)NULL;
|
|
peasycap->allocation_audio_page -= \
|
|
((unsigned int)(0x01 << AUDIO_ISOC_ORDER));
|
|
m++;
|
|
}
|
|
}
|
|
JOT(4, "easysnd_delete(): isoc audio buffers freed: %i pages\n", \
|
|
m * (0x01 << AUDIO_ISOC_ORDER));
|
|
/*---------------------------------------------------------------------------*/
|
|
JOT(4, "freeing audio buffers.\n");
|
|
lost = 0;
|
|
for (k = 0; k < peasycap->audio_buffer_page_many; k++) {
|
|
if ((void *)NULL != peasycap->audio_buffer[k].pgo) {
|
|
free_page((unsigned long)(peasycap->audio_buffer[k].pgo));
|
|
peasycap->audio_buffer[k].pgo = (void *)NULL;
|
|
peasycap->allocation_audio_page -= 1;
|
|
lost++;
|
|
}
|
|
}
|
|
JOT(4, "easysnd_delete(): audio buffers freed: %i pages\n", lost);
|
|
/*---------------------------------------------------------------------------*/
|
|
JOT(4, "freeing easycap structure.\n");
|
|
allocation_video_urb = peasycap->allocation_video_urb;
|
|
allocation_video_page = peasycap->allocation_video_page;
|
|
allocation_video_struct = peasycap->allocation_video_struct;
|
|
registered_video = peasycap->registered_video;
|
|
allocation_audio_urb = peasycap->allocation_audio_urb;
|
|
allocation_audio_page = peasycap->allocation_audio_page;
|
|
allocation_audio_struct = peasycap->allocation_audio_struct;
|
|
registered_audio = peasycap->registered_audio;
|
|
m = 0;
|
|
if ((struct easycap *)NULL != peasycap) {
|
|
kfree(peasycap); peasycap = (struct easycap *)NULL;
|
|
allocation_video_struct -= sizeof(struct easycap);
|
|
m++;
|
|
}
|
|
JOT(4, "%i easycap structure freed\n", m);
|
|
/*---------------------------------------------------------------------------*/
|
|
|
|
SAY("%8i= video urbs after all deletions\n", allocation_video_urb);
|
|
SAY("%8i= video pages after all deletions\n", allocation_video_page);
|
|
SAY("%8i= video structs after all deletions\n", allocation_video_struct);
|
|
SAY("%8i= video devices after all deletions\n", registered_video);
|
|
SAY("%8i= audio urbs after all deletions\n", allocation_audio_urb);
|
|
SAY("%8i= audio pages after all deletions\n", allocation_audio_page);
|
|
SAY("%8i= audio structs after all deletions\n", allocation_audio_struct);
|
|
SAY("%8i= audio devices after all deletions\n", registered_audio);
|
|
|
|
JOT(4, "ending.\n");
|
|
return;
|
|
}
|
|
/*****************************************************************************/
|
|
unsigned int easycap_poll(struct file *file, poll_table *wait)
|
|
{
|
|
struct easycap *peasycap;
|
|
|
|
JOT(8, "\n");
|
|
|
|
if (NULL == ((poll_table *)wait))
|
|
JOT(8, "WARNING: poll table pointer is NULL ... continuing\n");
|
|
if (NULL == ((struct file *)file)) {
|
|
SAY("ERROR: file pointer is NULL\n");
|
|
return -EFAULT;
|
|
}
|
|
peasycap = file->private_data;
|
|
if (NULL == peasycap) {
|
|
SAY("ERROR: peasycap is NULL\n");
|
|
return -EFAULT;
|
|
}
|
|
peasycap->polled = 1;
|
|
|
|
if (0 == easycap_dqbuf(peasycap, 0))
|
|
return POLLIN | POLLRDNORM;
|
|
else
|
|
return POLLERR;
|
|
|
|
}
|
|
/*****************************************************************************/
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* IF mode IS NONZERO THIS ROUTINE RETURNS -EAGAIN RATHER THAN BLOCKING.
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
int
|
|
easycap_dqbuf(struct easycap *peasycap, int mode)
|
|
{
|
|
int miss, rc;
|
|
|
|
JOT(8, "\n");
|
|
|
|
if (NULL == peasycap) {
|
|
SAY("ERROR: peasycap is NULL\n");
|
|
return -EFAULT;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* WAIT FOR FIELD 0
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
miss = 0;
|
|
if (mutex_lock_interruptible(&(peasycap->mutex_mmap_video[0])))
|
|
return -ERESTARTSYS;
|
|
while ((peasycap->field_read == peasycap->field_fill) || \
|
|
(0 != (0xFF00 & peasycap->field_buffer\
|
|
[peasycap->field_read][0].kount)) || \
|
|
(0 != (0x00FF & peasycap->field_buffer\
|
|
[peasycap->field_read][0].kount))) {
|
|
mutex_unlock(&(peasycap->mutex_mmap_video[0]));
|
|
|
|
if (mode)
|
|
return -EAGAIN;
|
|
|
|
JOT(8, "first wait on wq_video, " \
|
|
"%i=field_read %i=field_fill\n", \
|
|
peasycap->field_read, peasycap->field_fill);
|
|
|
|
msleep(1);
|
|
if (0 != (wait_event_interruptible(peasycap->wq_video, \
|
|
(peasycap->video_idle || peasycap->video_eof || \
|
|
((peasycap->field_read != peasycap->field_fill) && \
|
|
(0 == (0xFF00 & peasycap->field_buffer\
|
|
[peasycap->field_read][0].kount)) && \
|
|
(0 == (0x00FF & peasycap->field_buffer\
|
|
[peasycap->field_read][0].kount))))))){
|
|
SAY("aborted by signal\n");
|
|
return -EIO;
|
|
}
|
|
if (peasycap->video_idle) {
|
|
JOT(8, "%i=peasycap->video_idle\n", peasycap->video_idle);
|
|
return -EIO;
|
|
}
|
|
if (peasycap->video_eof) {
|
|
JOT(8, "%i=peasycap->video_eof\n", peasycap->video_eof);
|
|
debrief(peasycap);
|
|
kill_video_urbs(peasycap);
|
|
return -EIO;
|
|
}
|
|
miss++;
|
|
if (mutex_lock_interruptible(&(peasycap->mutex_mmap_video[0])))
|
|
return -ERESTARTSYS;
|
|
}
|
|
mutex_unlock(&(peasycap->mutex_mmap_video[0]));
|
|
JOT(8, "first awakening on wq_video after %i waits\n", miss);
|
|
|
|
rc = field2frame(peasycap);
|
|
if (0 != rc)
|
|
SAY("ERROR: field2frame() returned %i\n", rc);
|
|
|
|
if (true == peasycap->offerfields) {
|
|
peasycap->frame_read = peasycap->frame_fill;
|
|
(peasycap->frame_fill)++;
|
|
if (peasycap->frame_buffer_many <= peasycap->frame_fill)
|
|
peasycap->frame_fill = 0;
|
|
|
|
if (0x01 & easycap_standard[peasycap->standard_offset].mask) {
|
|
peasycap->frame_buffer[peasycap->frame_read][0].kount = \
|
|
V4L2_FIELD_BOTTOM;
|
|
} else {
|
|
peasycap->frame_buffer[peasycap->frame_read][0].kount = \
|
|
V4L2_FIELD_TOP;
|
|
}
|
|
JOT(8, "setting: %i=peasycap->frame_read\n", peasycap->frame_read);
|
|
JOT(8, "bumped to: %i=peasycap->frame_fill\n", peasycap->frame_fill);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* WAIT FOR FIELD 1
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
miss = 0;
|
|
if (mutex_lock_interruptible(&(peasycap->mutex_mmap_video[0])))
|
|
return -ERESTARTSYS;
|
|
while ((peasycap->field_read == peasycap->field_fill) || \
|
|
(0 != (0xFF00 & peasycap->field_buffer\
|
|
[peasycap->field_read][0].kount)) || \
|
|
(0 == (0x00FF & peasycap->field_buffer\
|
|
[peasycap->field_read][0].kount))) {
|
|
mutex_unlock(&(peasycap->mutex_mmap_video[0]));
|
|
|
|
if (mode)
|
|
return -EAGAIN;
|
|
|
|
JOT(8, "second wait on wq_video, " \
|
|
"%i=field_read %i=field_fill\n", \
|
|
peasycap->field_read, peasycap->field_fill);
|
|
msleep(1);
|
|
if (0 != (wait_event_interruptible(peasycap->wq_video, \
|
|
(peasycap->video_idle || peasycap->video_eof || \
|
|
((peasycap->field_read != peasycap->field_fill) && \
|
|
(0 == (0xFF00 & peasycap->field_buffer\
|
|
[peasycap->field_read][0].kount)) && \
|
|
(0 != (0x00FF & peasycap->field_buffer\
|
|
[peasycap->field_read][0].kount))))))){
|
|
SAY("aborted by signal\n");
|
|
return -EIO;
|
|
}
|
|
if (peasycap->video_idle) {
|
|
JOT(8, "%i=peasycap->video_idle\n", peasycap->video_idle);
|
|
return -EIO;
|
|
}
|
|
if (peasycap->video_eof) {
|
|
JOT(8, "%i=peasycap->video_eof\n", peasycap->video_eof);
|
|
debrief(peasycap);
|
|
kill_video_urbs(peasycap);
|
|
return -EIO;
|
|
}
|
|
miss++;
|
|
if (mutex_lock_interruptible(&(peasycap->mutex_mmap_video[0])))
|
|
return -ERESTARTSYS;
|
|
}
|
|
mutex_unlock(&(peasycap->mutex_mmap_video[0]));
|
|
JOT(8, "second awakening on wq_video after %i waits\n", miss);
|
|
|
|
rc = field2frame(peasycap);
|
|
if (0 != rc)
|
|
SAY("ERROR: field2frame() returned %i\n", rc);
|
|
|
|
peasycap->frame_read = peasycap->frame_fill;
|
|
peasycap->queued[peasycap->frame_read] = 0;
|
|
peasycap->done[peasycap->frame_read] = V4L2_BUF_FLAG_DONE;
|
|
|
|
(peasycap->frame_fill)++;
|
|
if (peasycap->frame_buffer_many <= peasycap->frame_fill)
|
|
peasycap->frame_fill = 0;
|
|
|
|
if (0x01 & easycap_standard[peasycap->standard_offset].mask) {
|
|
peasycap->frame_buffer[peasycap->frame_read][0].kount = \
|
|
V4L2_FIELD_TOP;
|
|
} else {
|
|
peasycap->frame_buffer[peasycap->frame_read][0].kount = \
|
|
V4L2_FIELD_BOTTOM;
|
|
}
|
|
|
|
JOT(8, "setting: %i=peasycap->frame_read\n", peasycap->frame_read);
|
|
JOT(8, "bumped to: %i=peasycap->frame_fill\n", peasycap->frame_fill);
|
|
|
|
return 0;
|
|
}
|
|
/*****************************************************************************/
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* BY DEFINITION, odd IS true FOR THE FIELD OCCUPYING LINES 1,3,5,...,479
|
|
* odd IS false FOR THE FIELD OCCUPYING LINES 0,2,4,...,478
|
|
*
|
|
* WHEN BOOLEAN PARAMETER decimatepixel IS true, ONLY THE FIELD FOR WHICH
|
|
* odd==false IS TRANSFERRED TO THE FRAME BUFFER.
|
|
*
|
|
* THE BOOLEAN PARAMETER offerfields IS true ONLY WHEN THE USER PROGRAM
|
|
* CHOOSES THE OPTION V4L2_FIELD_ALTERNATE. NO USERSPACE PROGRAM TESTED
|
|
* TO DATE HAS DONE THIS. BUGS ARE LIKELY.
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
int
|
|
field2frame(struct easycap *peasycap)
|
|
{
|
|
static struct timeval timeval0;
|
|
struct timeval timeval;
|
|
long long int above, below;
|
|
__u32 remainder;
|
|
struct signed_div_result sdr;
|
|
|
|
void *pex, *pad;
|
|
int kex, kad, mex, mad, rex, rad, rad2;
|
|
int c2, c3, w2, w3, cz, wz;
|
|
int rc, bytesperpixel, multiplier, much, more, over, rump, caches;
|
|
__u8 mask, margin;
|
|
bool odd, isuy, decimatepixel, offerfields;
|
|
|
|
JOT(8, "===== parity %i, field buffer %i --> frame buffer %i\n", \
|
|
peasycap->field_buffer[peasycap->field_read][0].kount,\
|
|
peasycap->field_read, peasycap->frame_fill);
|
|
JOT(8, "===== %i=bytesperpixel\n", peasycap->bytesperpixel);
|
|
if (true == peasycap->offerfields)
|
|
JOT(8, "===== offerfields\n");
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* REJECT OR CLEAN BAD FIELDS
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
if (peasycap->field_read == peasycap->field_fill) {
|
|
SAY("ERROR: on entry, still filling field buffer %i\n", \
|
|
peasycap->field_read);
|
|
return 0;
|
|
}
|
|
#if defined(EASYCAP_TESTCARD)
|
|
easycap_testcard(peasycap, peasycap->field_read);
|
|
#else
|
|
if (0 != (0x0400 & peasycap->field_buffer[peasycap->field_read][0].kount))
|
|
easycap_testcard(peasycap, peasycap->field_read);
|
|
#endif /*EASYCAP_TESTCARD*/
|
|
/*---------------------------------------------------------------------------*/
|
|
|
|
offerfields = peasycap->offerfields;
|
|
bytesperpixel = peasycap->bytesperpixel;
|
|
decimatepixel = peasycap->decimatepixel;
|
|
|
|
if ((2 != bytesperpixel) && \
|
|
(3 != bytesperpixel) && \
|
|
(4 != bytesperpixel)) {
|
|
SAY("MISTAKE: %i=bytesperpixel\n", bytesperpixel);
|
|
return -EFAULT;
|
|
}
|
|
if (true == decimatepixel)
|
|
multiplier = 2;
|
|
else
|
|
multiplier = 1;
|
|
|
|
w2 = 2 * multiplier * (peasycap->width);
|
|
w3 = bytesperpixel * \
|
|
multiplier * \
|
|
(peasycap->width);
|
|
wz = multiplier * \
|
|
(peasycap->height) * \
|
|
multiplier * \
|
|
(peasycap->width);
|
|
|
|
kex = peasycap->field_read; mex = 0;
|
|
kad = peasycap->frame_fill; mad = 0;
|
|
|
|
pex = peasycap->field_buffer[kex][0].pgo; rex = PAGE_SIZE;
|
|
pad = peasycap->frame_buffer[kad][0].pgo; rad = PAGE_SIZE;
|
|
if (peasycap->field_buffer[kex][0].kount)
|
|
odd = true;
|
|
else
|
|
odd = false;
|
|
|
|
if ((true == odd) && (false == offerfields) &&(false == decimatepixel)) {
|
|
JOT(8, " initial skipping %4i bytes p.%4i\n", \
|
|
w3/multiplier, mad);
|
|
pad += (w3 / multiplier); rad -= (w3 / multiplier);
|
|
}
|
|
isuy = true;
|
|
mask = 0; rump = 0; caches = 0;
|
|
|
|
cz = 0;
|
|
while (cz < wz) {
|
|
/*-------------------------------------------------------------------*/
|
|
/*
|
|
** PROCESS ONE LINE OF FRAME AT FULL RESOLUTION:
|
|
** READ w2 BYTES FROM FIELD BUFFER,
|
|
** WRITE w3 BYTES TO FRAME BUFFER
|
|
**/
|
|
/*-------------------------------------------------------------------*/
|
|
if (false == decimatepixel) {
|
|
over = w2;
|
|
do {
|
|
much = over; more = 0; margin = 0; mask = 0x00;
|
|
if (rex < much)
|
|
much = rex;
|
|
rump = 0;
|
|
|
|
if (much % 2) {
|
|
SAY("MISTAKE: much is odd\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
more = (bytesperpixel * \
|
|
much) / 2;
|
|
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
|
|
if (1 < bytesperpixel) {
|
|
if ((rad * \
|
|
2) < (much * \
|
|
bytesperpixel)) {
|
|
/*
|
|
** INJUDICIOUS ALTERATION OF THIS
|
|
** BLOCK WILL CAUSE BREAKAGE.
|
|
** BEWARE.
|
|
**/
|
|
rad2 = rad + bytesperpixel - 1;
|
|
much = ((((2 * \
|
|
rad2)/bytesperpixel)/2) * 2);
|
|
rump = ((bytesperpixel * \
|
|
much) / 2) - rad;
|
|
more = rad;
|
|
}
|
|
mask = (__u8)rump;
|
|
margin = 0;
|
|
if (much == rex) {
|
|
mask |= 0x04;
|
|
if ((mex + 1) < FIELD_BUFFER_SIZE/ \
|
|
PAGE_SIZE) {
|
|
margin = *((__u8 *)(peasycap->\
|
|
field_buffer\
|
|
[kex][mex + 1].pgo));
|
|
} else
|
|
mask |= 0x08;
|
|
}
|
|
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
|
|
} else {
|
|
SAY("MISTAKE: %i=bytesperpixel\n", \
|
|
bytesperpixel);
|
|
return -EFAULT;
|
|
}
|
|
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
|
|
if (rump)
|
|
caches++;
|
|
|
|
rc = redaub(peasycap, pad, pex, much, more, \
|
|
mask, margin, isuy);
|
|
if (0 > rc) {
|
|
SAY("ERROR: redaub() failed\n");
|
|
return -EFAULT;
|
|
}
|
|
if (much % 4) {
|
|
if (isuy)
|
|
isuy = false;
|
|
else
|
|
isuy = true;
|
|
}
|
|
over -= much; cz += much;
|
|
pex += much; rex -= much;
|
|
if (!rex) {
|
|
mex++;
|
|
pex = peasycap->field_buffer[kex][mex].pgo;
|
|
rex = PAGE_SIZE;
|
|
}
|
|
pad += more;
|
|
rad -= more;
|
|
if (!rad) {
|
|
mad++;
|
|
pad = peasycap->frame_buffer[kad][mad].pgo;
|
|
rad = PAGE_SIZE;
|
|
if (rump) {
|
|
pad += rump;
|
|
rad -= rump;
|
|
}
|
|
}
|
|
} while (over);
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* SKIP w3 BYTES IN TARGET FRAME BUFFER,
|
|
* UNLESS IT IS THE LAST LINE OF AN ODD FRAME
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
if (((false == odd) || (cz != wz))&&(false == offerfields)) {
|
|
over = w3;
|
|
do {
|
|
if (!rad) {
|
|
mad++;
|
|
pad = peasycap->frame_buffer\
|
|
[kad][mad].pgo;
|
|
rad = PAGE_SIZE;
|
|
}
|
|
more = over;
|
|
if (rad < more)
|
|
more = rad;
|
|
over -= more;
|
|
pad += more;
|
|
rad -= more;
|
|
} while (over);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* PROCESS ONE LINE OF FRAME AT REDUCED RESOLUTION:
|
|
* ONLY IF false==odd,
|
|
* READ w2 BYTES FROM FIELD BUFFER,
|
|
* WRITE w3 / 2 BYTES TO FRAME BUFFER
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
} else if (false == odd) {
|
|
over = w2;
|
|
do {
|
|
much = over; more = 0; margin = 0; mask = 0x00;
|
|
if (rex < much)
|
|
much = rex;
|
|
rump = 0;
|
|
|
|
if (much % 2) {
|
|
SAY("MISTAKE: much is odd\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
more = (bytesperpixel * \
|
|
much) / 4;
|
|
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
|
|
if (1 < bytesperpixel) {
|
|
if ((rad * 4) < (much * \
|
|
bytesperpixel)) {
|
|
/*
|
|
** INJUDICIOUS ALTERATION OF THIS
|
|
** BLOCK WILL CAUSE BREAKAGE.
|
|
** BEWARE.
|
|
**/
|
|
rad2 = rad + bytesperpixel - 1;
|
|
much = ((((2 * rad2)/bytesperpixel)/2)\
|
|
* 4);
|
|
rump = ((bytesperpixel * \
|
|
much) / 4) - rad;
|
|
more = rad;
|
|
}
|
|
mask = (__u8)rump;
|
|
margin = 0;
|
|
if (much == rex) {
|
|
mask |= 0x04;
|
|
if ((mex + 1) < FIELD_BUFFER_SIZE/ \
|
|
PAGE_SIZE) {
|
|
margin = *((__u8 *)(peasycap->\
|
|
field_buffer\
|
|
[kex][mex + 1].pgo));
|
|
}
|
|
else
|
|
mask |= 0x08;
|
|
}
|
|
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
|
|
} else {
|
|
SAY("MISTAKE: %i=bytesperpixel\n", \
|
|
bytesperpixel);
|
|
return -EFAULT;
|
|
}
|
|
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
|
|
if (rump)
|
|
caches++;
|
|
|
|
rc = redaub(peasycap, pad, pex, much, more, \
|
|
mask, margin, isuy);
|
|
if (0 > rc) {
|
|
SAY("ERROR: redaub() failed\n");
|
|
return -EFAULT;
|
|
}
|
|
over -= much; cz += much;
|
|
pex += much; rex -= much;
|
|
if (!rex) {
|
|
mex++;
|
|
pex = peasycap->field_buffer[kex][mex].pgo;
|
|
rex = PAGE_SIZE;
|
|
}
|
|
pad += more;
|
|
rad -= more;
|
|
if (!rad) {
|
|
mad++;
|
|
pad = peasycap->frame_buffer[kad][mad].pgo;
|
|
rad = PAGE_SIZE;
|
|
if (rump) {
|
|
pad += rump;
|
|
rad -= rump;
|
|
}
|
|
}
|
|
} while (over);
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* OTHERWISE JUST
|
|
* READ w2 BYTES FROM FIELD BUFFER AND DISCARD THEM
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
} else {
|
|
over = w2;
|
|
do {
|
|
if (!rex) {
|
|
mex++;
|
|
pex = peasycap->field_buffer[kex][mex].pgo;
|
|
rex = PAGE_SIZE;
|
|
}
|
|
much = over;
|
|
if (rex < much)
|
|
much = rex;
|
|
over -= much;
|
|
cz += much;
|
|
pex += much;
|
|
rex -= much;
|
|
} while (over);
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* SANITY CHECKS
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
c2 = (mex + 1)*PAGE_SIZE - rex;
|
|
if (cz != c2)
|
|
SAY("ERROR: discrepancy %i in bytes read\n", c2 - cz);
|
|
c3 = (mad + 1)*PAGE_SIZE - rad;
|
|
|
|
if (false == decimatepixel) {
|
|
if (bytesperpixel * \
|
|
cz != c3) \
|
|
SAY("ERROR: discrepancy %i in bytes written\n", \
|
|
c3 - (bytesperpixel * \
|
|
cz));
|
|
} else {
|
|
if (false == odd) {
|
|
if (bytesperpixel * \
|
|
cz != (4 * c3))
|
|
SAY("ERROR: discrepancy %i in bytes written\n", \
|
|
(2*c3)-(bytesperpixel * \
|
|
cz));
|
|
} else {
|
|
if (0 != c3)
|
|
SAY("ERROR: discrepancy %i " \
|
|
"in bytes written\n", c3);
|
|
}
|
|
}
|
|
if (rump)
|
|
SAY("ERROR: undischarged cache at end of line in frame buffer\n");
|
|
|
|
JOT(8, "===== field2frame(): %i bytes --> %i bytes (incl skip)\n", c2, c3);
|
|
JOT(8, "===== field2frame(): %i=mad %i=rad\n", mad, rad);
|
|
|
|
if (true == odd)
|
|
JOT(8, "+++++ field2frame(): frame buffer %i is full\n", kad);
|
|
|
|
if (peasycap->field_read == peasycap->field_fill)
|
|
SAY("WARNING: on exit, filling field buffer %i\n", \
|
|
peasycap->field_read);
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* CALCULATE VIDEO STREAMING RATE
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
do_gettimeofday(&timeval);
|
|
if (timeval0.tv_sec) {
|
|
below = ((long long int)(1000000)) * \
|
|
((long long int)(timeval.tv_sec - timeval0.tv_sec)) + \
|
|
(long long int)(timeval.tv_usec - timeval0.tv_usec);
|
|
above = (long long int)1000000;
|
|
|
|
sdr = signed_div(above, below);
|
|
above = sdr.quotient;
|
|
remainder = (__u32)sdr.remainder;
|
|
|
|
JOT(8, "video streaming at %3lli.%03i fields per second\n", above, \
|
|
(remainder/1000));
|
|
}
|
|
timeval0 = timeval;
|
|
|
|
if (caches)
|
|
JOT(8, "%i=caches\n", caches);
|
|
return 0;
|
|
}
|
|
/*****************************************************************************/
|
|
struct signed_div_result
|
|
signed_div(long long int above, long long int below)
|
|
{
|
|
struct signed_div_result sdr;
|
|
|
|
if (((0 <= above) && (0 <= below)) || ((0 > above) && (0 > below))) {
|
|
sdr.remainder = (unsigned long long int) do_div(above, below);
|
|
sdr.quotient = (long long int) above;
|
|
} else {
|
|
if (0 > above)
|
|
above = -above;
|
|
if (0 > below)
|
|
below = -below;
|
|
sdr.remainder = (unsigned long long int) do_div(above, below);
|
|
sdr.quotient = -((long long int) above);
|
|
}
|
|
return sdr;
|
|
}
|
|
/*****************************************************************************/
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* DECIMATION AND COLOURSPACE CONVERSION.
|
|
*
|
|
* THIS ROUTINE REQUIRES THAT ALL THE DATA TO BE READ RESIDES ON ONE PAGE
|
|
* AND THAT ALL THE DATA TO BE WRITTEN RESIDES ON ONE (DIFFERENT) PAGE.
|
|
* THE CALLING ROUTINE MUST ENSURE THAT THIS REQUIREMENT IS MET, AND MUST
|
|
* ALSO ENSURE THAT much IS EVEN.
|
|
*
|
|
* much BYTES ARE READ, AT LEAST (bytesperpixel * much)/2 BYTES ARE WRITTEN
|
|
* IF THERE IS NO DECIMATION, HALF THIS AMOUNT IF THERE IS DECIMATION.
|
|
*
|
|
* mask IS ZERO WHEN NO SPECIAL BEHAVIOUR REQUIRED. OTHERWISE IT IS SET THUS:
|
|
* 0x03 & mask = number of bytes to be written to cache instead of to
|
|
* frame buffer
|
|
* 0x04 & mask => use argument margin to set the chrominance for last pixel
|
|
* 0x08 & mask => do not set the chrominance for last pixel
|
|
*
|
|
* YUV to RGB CONVERSION IS (OR SHOULD BE) ITU-R BT 601.
|
|
*
|
|
* THERE IS A LOT OF CODE REPETITION IN THIS ROUTINE IN ORDER TO AVOID
|
|
* INEFFICIENT SWITCHING INSIDE INNER LOOPS. REARRANGING THE LOGIC TO
|
|
* REDUCE CODE LENGTH WILL GENERALLY IMPAIR RUNTIME PERFORMANCE. BEWARE.
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
int
|
|
redaub(struct easycap *peasycap, void *pad, void *pex, int much, int more, \
|
|
__u8 mask, __u8 margin, bool isuy)
|
|
{
|
|
static __s32 ay[256], bu[256], rv[256], gu[256], gv[256];
|
|
static __u8 cache[8], *pcache;
|
|
__u8 r, g, b, y, u, v, c, *p2, *p3, *pz, *pr;
|
|
int bytesperpixel;
|
|
bool byteswaporder, decimatepixel, last;
|
|
int j, rump;
|
|
__s32 s32;
|
|
|
|
if (much % 2) {
|
|
SAY("MISTAKE: much is odd\n");
|
|
return -EFAULT;
|
|
}
|
|
bytesperpixel = peasycap->bytesperpixel;
|
|
byteswaporder = peasycap->byteswaporder;
|
|
decimatepixel = peasycap->decimatepixel;
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
if (!bu[255]) {
|
|
for (j = 0; j < 112; j++) {
|
|
s32 = (0xFF00 & (453 * j)) >> 8;
|
|
bu[j + 128] = s32; bu[127 - j] = -s32;
|
|
s32 = (0xFF00 & (359 * j)) >> 8;
|
|
rv[j + 128] = s32; rv[127 - j] = -s32;
|
|
s32 = (0xFF00 & (88 * j)) >> 8;
|
|
gu[j + 128] = s32; gu[127 - j] = -s32;
|
|
s32 = (0xFF00 & (183 * j)) >> 8;
|
|
gv[j + 128] = s32; gv[127 - j] = -s32;
|
|
}
|
|
for (j = 0; j < 16; j++) {
|
|
bu[j] = bu[16]; rv[j] = rv[16];
|
|
gu[j] = gu[16]; gv[j] = gv[16];
|
|
}
|
|
for (j = 240; j < 256; j++) {
|
|
bu[j] = bu[239]; rv[j] = rv[239];
|
|
gu[j] = gu[239]; gv[j] = gv[239];
|
|
}
|
|
for (j = 16; j < 236; j++)
|
|
ay[j] = j;
|
|
for (j = 0; j < 16; j++)
|
|
ay[j] = ay[16];
|
|
for (j = 236; j < 256; j++)
|
|
ay[j] = ay[235];
|
|
JOT(8, "lookup tables are prepared\n");
|
|
}
|
|
if ((__u8 *)NULL == pcache)
|
|
pcache = &cache[0];
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* TRANSFER CONTENTS OF CACHE TO THE FRAME BUFFER
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
if (!pcache) {
|
|
SAY("MISTAKE: pcache is NULL\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
if (pcache != &cache[0])
|
|
JOT(16, "cache has %i bytes\n", (int)(pcache - &cache[0]));
|
|
p2 = &cache[0];
|
|
p3 = (__u8 *)pad - (int)(pcache - &cache[0]);
|
|
while (p2 < pcache) {
|
|
*p3++ = *p2; p2++;
|
|
}
|
|
pcache = &cache[0];
|
|
if (p3 != pad) {
|
|
SAY("MISTAKE: pointer misalignment\n");
|
|
return -EFAULT;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
rump = (int)(0x03 & mask);
|
|
u = 0; v = 0;
|
|
p2 = (__u8 *)pex; pz = p2 + much; pr = p3 + more; last = false;
|
|
p2++;
|
|
|
|
if (true == isuy)
|
|
u = *(p2 - 1);
|
|
else
|
|
v = *(p2 - 1);
|
|
|
|
if (rump)
|
|
JOT(16, "%4i=much %4i=more %i=rump\n", much, more, rump);
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
switch (bytesperpixel) {
|
|
case 2: {
|
|
if (false == decimatepixel) {
|
|
memcpy(pad, pex, (size_t)much);
|
|
if (false == byteswaporder)
|
|
/*---------------------------------------------------*/
|
|
/*
|
|
** UYVY
|
|
*/
|
|
/*---------------------------------------------------*/
|
|
return 0;
|
|
else {
|
|
/*---------------------------------------------------*/
|
|
/*
|
|
** YUYV
|
|
*/
|
|
/*---------------------------------------------------*/
|
|
p3 = (__u8 *)pad; pz = p3 + much;
|
|
while (pz > p3) {
|
|
c = *p3;
|
|
*p3 = *(p3 + 1);
|
|
*(p3 + 1) = c;
|
|
p3 += 2;
|
|
}
|
|
return 0;
|
|
}
|
|
} else {
|
|
if (false == byteswaporder) {
|
|
/*---------------------------------------------------*/
|
|
/*
|
|
** UYVY DECIMATED
|
|
*/
|
|
/*---------------------------------------------------*/
|
|
p2 = (__u8 *)pex; p3 = (__u8 *)pad; pz = p2 + much;
|
|
while (pz > p2) {
|
|
*p3 = *p2;
|
|
*(p3 + 1) = *(p2 + 1);
|
|
*(p3 + 2) = *(p2 + 2);
|
|
*(p3 + 3) = *(p2 + 3);
|
|
p3 += 4; p2 += 8;
|
|
}
|
|
return 0;
|
|
} else {
|
|
/*---------------------------------------------------*/
|
|
/*
|
|
** YUYV DECIMATED
|
|
**/
|
|
/*---------------------------------------------------*/
|
|
p2 = (__u8 *)pex; p3 = (__u8 *)pad; pz = p2 + much;
|
|
while (pz > p2) {
|
|
*p3 = *(p2 + 1);
|
|
*(p3 + 1) = *p2;
|
|
*(p3 + 2) = *(p2 + 3);
|
|
*(p3 + 3) = *(p2 + 2);
|
|
p3 += 4; p2 += 8;
|
|
}
|
|
return 0;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case 3:
|
|
{
|
|
if (false == decimatepixel) {
|
|
if (false == byteswaporder) {
|
|
/*---------------------------------------------------*/
|
|
/*
|
|
** RGB
|
|
**/
|
|
/*---------------------------------------------------*/
|
|
while (pz > p2) {
|
|
if (pr <= (p3 + bytesperpixel))
|
|
last = true;
|
|
else
|
|
last = false;
|
|
y = *p2;
|
|
if ((true == last) && (0x0C & mask)) {
|
|
if (0x04 & mask) {
|
|
if (true == isuy)
|
|
v = margin;
|
|
else
|
|
u = margin;
|
|
} else
|
|
if (0x08 & mask)
|
|
;
|
|
} else {
|
|
if (true == isuy)
|
|
v = *(p2 + 1);
|
|
else
|
|
u = *(p2 + 1);
|
|
}
|
|
|
|
s32 = ay[(int)y] + rv[(int)v];
|
|
r = (255 < s32) ? 255 : ((0 > s32) ? \
|
|
0 : (__u8)s32);
|
|
s32 = ay[(int)y] - gu[(int)u] - gv[(int)v];
|
|
g = (255 < s32) ? 255 : ((0 > s32) ? \
|
|
0 : (__u8)s32);
|
|
s32 = ay[(int)y] + bu[(int)u];
|
|
b = (255 < s32) ? 255 : ((0 > s32) ? \
|
|
0 : (__u8)s32);
|
|
|
|
if ((true == last) && rump) {
|
|
pcache = &cache[0];
|
|
switch (bytesperpixel - rump) {
|
|
case 1: {
|
|
*p3 = r;
|
|
*pcache++ = g;
|
|
*pcache++ = b;
|
|
break;
|
|
}
|
|
case 2: {
|
|
*p3 = r;
|
|
*(p3 + 1) = g;
|
|
*pcache++ = b;
|
|
break;
|
|
}
|
|
default: {
|
|
SAY("MISTAKE: %i=rump\n", \
|
|
bytesperpixel - rump);
|
|
return -EFAULT;
|
|
}
|
|
}
|
|
} else {
|
|
*p3 = r;
|
|
*(p3 + 1) = g;
|
|
*(p3 + 2) = b;
|
|
}
|
|
p2 += 2;
|
|
if (true == isuy)
|
|
isuy = false;
|
|
else
|
|
isuy = true;
|
|
p3 += bytesperpixel;
|
|
}
|
|
return 0;
|
|
} else {
|
|
/*---------------------------------------------------*/
|
|
/*
|
|
** BGR
|
|
*/
|
|
/*---------------------------------------------------*/
|
|
while (pz > p2) {
|
|
if (pr <= (p3 + bytesperpixel))
|
|
last = true;
|
|
else
|
|
last = false;
|
|
y = *p2;
|
|
if ((true == last) && (0x0C & mask)) {
|
|
if (0x04 & mask) {
|
|
if (true == isuy)
|
|
v = margin;
|
|
else
|
|
u = margin;
|
|
}
|
|
else
|
|
if (0x08 & mask)
|
|
;
|
|
} else {
|
|
if (true == isuy)
|
|
v = *(p2 + 1);
|
|
else
|
|
u = *(p2 + 1);
|
|
}
|
|
|
|
s32 = ay[(int)y] + rv[(int)v];
|
|
r = (255 < s32) ? 255 : ((0 > s32) ? \
|
|
0 : (__u8)s32);
|
|
s32 = ay[(int)y] - gu[(int)u] - gv[(int)v];
|
|
g = (255 < s32) ? 255 : ((0 > s32) ? \
|
|
0 : (__u8)s32);
|
|
s32 = ay[(int)y] + bu[(int)u];
|
|
b = (255 < s32) ? 255 : ((0 > s32) ? \
|
|
0 : (__u8)s32);
|
|
|
|
if ((true == last) && rump) {
|
|
pcache = &cache[0];
|
|
switch (bytesperpixel - rump) {
|
|
case 1: {
|
|
*p3 = b;
|
|
*pcache++ = g;
|
|
*pcache++ = r;
|
|
break;
|
|
}
|
|
case 2: {
|
|
*p3 = b;
|
|
*(p3 + 1) = g;
|
|
*pcache++ = r;
|
|
break;
|
|
}
|
|
default: {
|
|
SAY("MISTAKE: %i=rump\n", \
|
|
bytesperpixel - rump);
|
|
return -EFAULT;
|
|
}
|
|
}
|
|
} else {
|
|
*p3 = b;
|
|
*(p3 + 1) = g;
|
|
*(p3 + 2) = r;
|
|
}
|
|
p2 += 2;
|
|
if (true == isuy)
|
|
isuy = false;
|
|
else
|
|
isuy = true;
|
|
p3 += bytesperpixel;
|
|
}
|
|
}
|
|
return 0;
|
|
} else {
|
|
if (false == byteswaporder) {
|
|
/*---------------------------------------------------*/
|
|
/*
|
|
** RGB DECIMATED
|
|
*/
|
|
/*---------------------------------------------------*/
|
|
while (pz > p2) {
|
|
if (pr <= (p3 + bytesperpixel))
|
|
last = true;
|
|
else
|
|
last = false;
|
|
y = *p2;
|
|
if ((true == last) && (0x0C & mask)) {
|
|
if (0x04 & mask) {
|
|
if (true == isuy)
|
|
v = margin;
|
|
else
|
|
u = margin;
|
|
} else
|
|
if (0x08 & mask)
|
|
;
|
|
} else {
|
|
if (true == isuy)
|
|
v = *(p2 + 1);
|
|
else
|
|
u = *(p2 + 1);
|
|
}
|
|
|
|
if (true == isuy) {
|
|
s32 = ay[(int)y] + rv[(int)v];
|
|
r = (255 < s32) ? 255 : ((0 > s32) ? \
|
|
0 : (__u8)s32);
|
|
s32 = ay[(int)y] - gu[(int)u] - \
|
|
gv[(int)v];
|
|
g = (255 < s32) ? 255 : ((0 > s32) ? \
|
|
0 : (__u8)s32);
|
|
s32 = ay[(int)y] + bu[(int)u];
|
|
b = (255 < s32) ? 255 : ((0 > s32) ? \
|
|
0 : (__u8)s32);
|
|
|
|
if ((true == last) && rump) {
|
|
pcache = &cache[0];
|
|
switch (bytesperpixel - rump) {
|
|
case 1: {
|
|
*p3 = r;
|
|
*pcache++ = g;
|
|
*pcache++ = b;
|
|
break;
|
|
}
|
|
case 2: {
|
|
*p3 = r;
|
|
*(p3 + 1) = g;
|
|
*pcache++ = b;
|
|
break;
|
|
}
|
|
default: {
|
|
SAY("MISTAKE: " \
|
|
"%i=rump\n", \
|
|
bytesperpixel - rump);
|
|
return -EFAULT;
|
|
}
|
|
}
|
|
} else {
|
|
*p3 = r;
|
|
*(p3 + 1) = g;
|
|
*(p3 + 2) = b;
|
|
}
|
|
isuy = false;
|
|
p3 += bytesperpixel;
|
|
} else {
|
|
isuy = true;
|
|
}
|
|
p2 += 2;
|
|
}
|
|
return 0;
|
|
} else {
|
|
/*---------------------------------------------------*/
|
|
/*
|
|
* BGR DECIMATED
|
|
*/
|
|
/*---------------------------------------------------*/
|
|
while (pz > p2) {
|
|
if (pr <= (p3 + bytesperpixel))
|
|
last = true;
|
|
else
|
|
last = false;
|
|
y = *p2;
|
|
if ((true == last) && (0x0C & mask)) {
|
|
if (0x04 & mask) {
|
|
if (true == isuy)
|
|
v = margin;
|
|
else
|
|
u = margin;
|
|
} else
|
|
if (0x08 & mask)
|
|
;
|
|
} else {
|
|
if (true == isuy)
|
|
v = *(p2 + 1);
|
|
else
|
|
u = *(p2 + 1);
|
|
}
|
|
|
|
if (true == isuy) {
|
|
|
|
s32 = ay[(int)y] + rv[(int)v];
|
|
r = (255 < s32) ? 255 : ((0 > s32) ? \
|
|
0 : (__u8)s32);
|
|
s32 = ay[(int)y] - gu[(int)u] - \
|
|
gv[(int)v];
|
|
g = (255 < s32) ? 255 : ((0 > s32) ? \
|
|
0 : (__u8)s32);
|
|
s32 = ay[(int)y] + bu[(int)u];
|
|
b = (255 < s32) ? 255 : ((0 > s32) ? \
|
|
0 : (__u8)s32);
|
|
|
|
if ((true == last) && rump) {
|
|
pcache = &cache[0];
|
|
switch (bytesperpixel - rump) {
|
|
case 1: {
|
|
*p3 = b;
|
|
*pcache++ = g;
|
|
*pcache++ = r;
|
|
break;
|
|
}
|
|
case 2: {
|
|
*p3 = b;
|
|
*(p3 + 1) = g;
|
|
*pcache++ = r;
|
|
break;
|
|
}
|
|
default: {
|
|
SAY("MISTAKE: " \
|
|
"%i=rump\n", \
|
|
bytesperpixel - rump);
|
|
return -EFAULT;
|
|
}
|
|
}
|
|
} else {
|
|
*p3 = b;
|
|
*(p3 + 1) = g;
|
|
*(p3 + 2) = r;
|
|
}
|
|
isuy = false;
|
|
p3 += bytesperpixel;
|
|
}
|
|
else
|
|
isuy = true;
|
|
p2 += 2;
|
|
}
|
|
return 0;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case 4:
|
|
{
|
|
if (false == decimatepixel) {
|
|
if (false == byteswaporder) {
|
|
/*---------------------------------------------------*/
|
|
/*
|
|
** RGBA
|
|
*/
|
|
/*---------------------------------------------------*/
|
|
while (pz > p2) {
|
|
if (pr <= (p3 + bytesperpixel))
|
|
last = true;
|
|
else
|
|
last = false;
|
|
y = *p2;
|
|
if ((true == last) && (0x0C & mask)) {
|
|
if (0x04 & mask) {
|
|
if (true == isuy)
|
|
v = margin;
|
|
else
|
|
u = margin;
|
|
} else
|
|
if (0x08 & mask)
|
|
;
|
|
} else {
|
|
if (true == isuy)
|
|
v = *(p2 + 1);
|
|
else
|
|
u = *(p2 + 1);
|
|
}
|
|
|
|
s32 = ay[(int)y] + rv[(int)v];
|
|
r = (255 < s32) ? 255 : ((0 > s32) ? \
|
|
0 : (__u8)s32);
|
|
s32 = ay[(int)y] - gu[(int)u] - gv[(int)v];
|
|
g = (255 < s32) ? 255 : ((0 > s32) ? \
|
|
0 : (__u8)s32);
|
|
s32 = ay[(int)y] + bu[(int)u];
|
|
b = (255 < s32) ? 255 : ((0 > s32) ? \
|
|
0 : (__u8)s32);
|
|
|
|
if ((true == last) && rump) {
|
|
pcache = &cache[0];
|
|
switch (bytesperpixel - rump) {
|
|
case 1: {
|
|
*p3 = r;
|
|
*pcache++ = g;
|
|
*pcache++ = b;
|
|
*pcache++ = 0;
|
|
break;
|
|
}
|
|
case 2: {
|
|
*p3 = r;
|
|
*(p3 + 1) = g;
|
|
*pcache++ = b;
|
|
*pcache++ = 0;
|
|
break;
|
|
}
|
|
case 3: {
|
|
*p3 = r;
|
|
*(p3 + 1) = g;
|
|
*(p3 + 2) = b;
|
|
*pcache++ = 0;
|
|
break;
|
|
}
|
|
default: {
|
|
SAY("MISTAKE: %i=rump\n", \
|
|
bytesperpixel - rump);
|
|
return -EFAULT;
|
|
}
|
|
}
|
|
} else {
|
|
*p3 = r;
|
|
*(p3 + 1) = g;
|
|
*(p3 + 2) = b;
|
|
*(p3 + 3) = 0;
|
|
}
|
|
p2 += 2;
|
|
if (true == isuy)
|
|
isuy = false;
|
|
else
|
|
isuy = true;
|
|
p3 += bytesperpixel;
|
|
}
|
|
return 0;
|
|
} else {
|
|
/*---------------------------------------------------*/
|
|
/*
|
|
** BGRA
|
|
*/
|
|
/*---------------------------------------------------*/
|
|
while (pz > p2) {
|
|
if (pr <= (p3 + bytesperpixel))
|
|
last = true;
|
|
else
|
|
last = false;
|
|
y = *p2;
|
|
if ((true == last) && (0x0C & mask)) {
|
|
if (0x04 & mask) {
|
|
if (true == isuy)
|
|
v = margin;
|
|
else
|
|
u = margin;
|
|
} else
|
|
if (0x08 & mask)
|
|
;
|
|
} else {
|
|
if (true == isuy)
|
|
v = *(p2 + 1);
|
|
else
|
|
u = *(p2 + 1);
|
|
}
|
|
|
|
s32 = ay[(int)y] + rv[(int)v];
|
|
r = (255 < s32) ? 255 : ((0 > s32) ? \
|
|
0 : (__u8)s32);
|
|
s32 = ay[(int)y] - gu[(int)u] - gv[(int)v];
|
|
g = (255 < s32) ? 255 : ((0 > s32) ? \
|
|
0 : (__u8)s32);
|
|
s32 = ay[(int)y] + bu[(int)u];
|
|
b = (255 < s32) ? 255 : ((0 > s32) ? \
|
|
0 : (__u8)s32);
|
|
|
|
if ((true == last) && rump) {
|
|
pcache = &cache[0];
|
|
switch (bytesperpixel - rump) {
|
|
case 1: {
|
|
*p3 = b;
|
|
*pcache++ = g;
|
|
*pcache++ = r;
|
|
*pcache++ = 0;
|
|
break;
|
|
}
|
|
case 2: {
|
|
*p3 = b;
|
|
*(p3 + 1) = g;
|
|
*pcache++ = r;
|
|
*pcache++ = 0;
|
|
break;
|
|
}
|
|
case 3: {
|
|
*p3 = b;
|
|
*(p3 + 1) = g;
|
|
*(p3 + 2) = r;
|
|
*pcache++ = 0;
|
|
break;
|
|
}
|
|
default: {
|
|
SAY("MISTAKE: %i=rump\n", \
|
|
bytesperpixel - rump);
|
|
return -EFAULT;
|
|
}
|
|
}
|
|
} else {
|
|
*p3 = b;
|
|
*(p3 + 1) = g;
|
|
*(p3 + 2) = r;
|
|
*(p3 + 3) = 0;
|
|
}
|
|
p2 += 2;
|
|
if (true == isuy)
|
|
isuy = false;
|
|
else
|
|
isuy = true;
|
|
p3 += bytesperpixel;
|
|
}
|
|
}
|
|
return 0;
|
|
} else {
|
|
if (false == byteswaporder) {
|
|
/*---------------------------------------------------*/
|
|
/*
|
|
** RGBA DECIMATED
|
|
*/
|
|
/*---------------------------------------------------*/
|
|
while (pz > p2) {
|
|
if (pr <= (p3 + bytesperpixel))
|
|
last = true;
|
|
else
|
|
last = false;
|
|
y = *p2;
|
|
if ((true == last) && (0x0C & mask)) {
|
|
if (0x04 & mask) {
|
|
if (true == isuy)
|
|
v = margin;
|
|
else
|
|
u = margin;
|
|
} else
|
|
if (0x08 & mask)
|
|
;
|
|
} else {
|
|
if (true == isuy)
|
|
v = *(p2 + 1);
|
|
else
|
|
u = *(p2 + 1);
|
|
}
|
|
|
|
if (true == isuy) {
|
|
|
|
s32 = ay[(int)y] + rv[(int)v];
|
|
r = (255 < s32) ? 255 : ((0 > s32) ? \
|
|
0 : (__u8)s32);
|
|
s32 = ay[(int)y] - gu[(int)u] - \
|
|
gv[(int)v];
|
|
g = (255 < s32) ? 255 : ((0 > s32) ? \
|
|
0 : (__u8)s32);
|
|
s32 = ay[(int)y] + bu[(int)u];
|
|
b = (255 < s32) ? 255 : ((0 > s32) ? \
|
|
0 : (__u8)s32);
|
|
|
|
if ((true == last) && rump) {
|
|
pcache = &cache[0];
|
|
switch (bytesperpixel - rump) {
|
|
case 1: {
|
|
*p3 = r;
|
|
*pcache++ = g;
|
|
*pcache++ = b;
|
|
*pcache++ = 0;
|
|
break;
|
|
}
|
|
case 2: {
|
|
*p3 = r;
|
|
*(p3 + 1) = g;
|
|
*pcache++ = b;
|
|
*pcache++ = 0;
|
|
break;
|
|
}
|
|
case 3: {
|
|
*p3 = r;
|
|
*(p3 + 1) = g;
|
|
*(p3 + 2) = b;
|
|
*pcache++ = 0;
|
|
break;
|
|
}
|
|
default: {
|
|
SAY("MISTAKE: " \
|
|
"%i=rump\n", \
|
|
bytesperpixel - \
|
|
rump);
|
|
return -EFAULT;
|
|
}
|
|
}
|
|
} else {
|
|
*p3 = r;
|
|
*(p3 + 1) = g;
|
|
*(p3 + 2) = b;
|
|
*(p3 + 3) = 0;
|
|
}
|
|
isuy = false;
|
|
p3 += bytesperpixel;
|
|
} else
|
|
isuy = true;
|
|
p2 += 2;
|
|
}
|
|
return 0;
|
|
} else {
|
|
/*---------------------------------------------------*/
|
|
/*
|
|
** BGRA DECIMATED
|
|
*/
|
|
/*---------------------------------------------------*/
|
|
while (pz > p2) {
|
|
if (pr <= (p3 + bytesperpixel))
|
|
last = true;
|
|
else
|
|
last = false;
|
|
y = *p2;
|
|
if ((true == last) && (0x0C & mask)) {
|
|
if (0x04 & mask) {
|
|
if (true == isuy)
|
|
v = margin;
|
|
else
|
|
u = margin;
|
|
} else
|
|
if (0x08 & mask)
|
|
;
|
|
} else {
|
|
if (true == isuy)
|
|
v = *(p2 + 1);
|
|
else
|
|
u = *(p2 + 1);
|
|
}
|
|
|
|
if (true == isuy) {
|
|
s32 = ay[(int)y] + rv[(int)v];
|
|
r = (255 < s32) ? 255 : ((0 > s32) ? \
|
|
0 : (__u8)s32);
|
|
s32 = ay[(int)y] - gu[(int)u] - \
|
|
gv[(int)v];
|
|
g = (255 < s32) ? 255 : ((0 > s32) ? \
|
|
0 : (__u8)s32);
|
|
s32 = ay[(int)y] + bu[(int)u];
|
|
b = (255 < s32) ? 255 : ((0 > s32) ? \
|
|
0 : (__u8)s32);
|
|
|
|
if ((true == last) && rump) {
|
|
pcache = &cache[0];
|
|
switch (bytesperpixel - rump) {
|
|
case 1: {
|
|
*p3 = b;
|
|
*pcache++ = g;
|
|
*pcache++ = r;
|
|
*pcache++ = 0;
|
|
break;
|
|
}
|
|
case 2: {
|
|
*p3 = b;
|
|
*(p3 + 1) = g;
|
|
*pcache++ = r;
|
|
*pcache++ = 0;
|
|
break;
|
|
}
|
|
case 3: {
|
|
*p3 = b;
|
|
*(p3 + 1) = g;
|
|
*(p3 + 2) = r;
|
|
*pcache++ = 0;
|
|
break;
|
|
}
|
|
default: {
|
|
SAY("MISTAKE: " \
|
|
"%i=rump\n", \
|
|
bytesperpixel - rump);
|
|
return -EFAULT;
|
|
}
|
|
}
|
|
} else {
|
|
*p3 = b;
|
|
*(p3 + 1) = g;
|
|
*(p3 + 2) = r;
|
|
*(p3 + 3) = 0;
|
|
}
|
|
isuy = false;
|
|
p3 += bytesperpixel;
|
|
} else
|
|
isuy = true;
|
|
p2 += 2;
|
|
}
|
|
return 0;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
default: {
|
|
SAY("MISTAKE: %i=bytesperpixel\n", bytesperpixel);
|
|
return -EFAULT;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
/*****************************************************************************/
|
|
void
|
|
debrief(struct easycap *peasycap)
|
|
{
|
|
if ((struct usb_device *)NULL != peasycap->pusb_device) {
|
|
check_stk(peasycap->pusb_device);
|
|
check_saa(peasycap->pusb_device);
|
|
sayreadonly(peasycap);
|
|
SAY("%i=peasycap->field_fill\n", peasycap->field_fill);
|
|
SAY("%i=peasycap->field_read\n", peasycap->field_read);
|
|
SAY("%i=peasycap->frame_fill\n", peasycap->frame_fill);
|
|
SAY("%i=peasycap->frame_read\n", peasycap->frame_read);
|
|
}
|
|
return;
|
|
}
|
|
/*****************************************************************************/
|
|
void
|
|
sayreadonly(struct easycap *peasycap)
|
|
{
|
|
static int done;
|
|
int got00, got1F, got60, got61, got62;
|
|
|
|
if ((!done) && ((struct usb_device *)NULL != peasycap->pusb_device)) {
|
|
done = 1;
|
|
got00 = read_saa(peasycap->pusb_device, 0x00);
|
|
got1F = read_saa(peasycap->pusb_device, 0x1F);
|
|
got60 = read_saa(peasycap->pusb_device, 0x60);
|
|
got61 = read_saa(peasycap->pusb_device, 0x61);
|
|
got62 = read_saa(peasycap->pusb_device, 0x62);
|
|
SAY("0x%02X=reg0x00 0x%02X=reg0x1F\n", got00, got1F);
|
|
SAY("0x%02X=reg0x60 0x%02X=reg0x61 0x%02X=reg0x62\n", \
|
|
got60, got61, got62);
|
|
}
|
|
return;
|
|
}
|
|
/*****************************************************************************/
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* SEE CORBET ET AL. "LINUX DEVICE DRIVERS", 3rd EDITION, PAGES 430-434
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
int easycap_mmap(struct file *file, struct vm_area_struct *pvma)
|
|
{
|
|
|
|
JOT(8, "\n");
|
|
|
|
pvma->vm_ops = &easycap_vm_ops;
|
|
pvma->vm_flags |= VM_RESERVED;
|
|
if (NULL != file)
|
|
pvma->vm_private_data = file->private_data;
|
|
easycap_vma_open(pvma);
|
|
return 0;
|
|
}
|
|
/*****************************************************************************/
|
|
void
|
|
easycap_vma_open(struct vm_area_struct *pvma)
|
|
{
|
|
struct easycap *peasycap;
|
|
|
|
peasycap = pvma->vm_private_data;
|
|
if (NULL != peasycap)
|
|
peasycap->vma_many++;
|
|
|
|
JOT(8, "%i=peasycap->vma_many\n", peasycap->vma_many);
|
|
|
|
return;
|
|
}
|
|
/*****************************************************************************/
|
|
void
|
|
easycap_vma_close(struct vm_area_struct *pvma)
|
|
{
|
|
struct easycap *peasycap;
|
|
|
|
peasycap = pvma->vm_private_data;
|
|
if (NULL != peasycap) {
|
|
peasycap->vma_many--;
|
|
JOT(8, "%i=peasycap->vma_many\n", peasycap->vma_many);
|
|
}
|
|
return;
|
|
}
|
|
/*****************************************************************************/
|
|
int
|
|
easycap_vma_fault(struct vm_area_struct *pvma, struct vm_fault *pvmf)
|
|
{
|
|
int k, m, retcode;
|
|
void *pbuf;
|
|
struct page *page;
|
|
struct easycap *peasycap;
|
|
|
|
retcode = VM_FAULT_NOPAGE;
|
|
pbuf = (void *)NULL;
|
|
page = (struct page *)NULL;
|
|
|
|
if (NULL == pvma) {
|
|
SAY("pvma is NULL\n");
|
|
return retcode;
|
|
}
|
|
if (NULL == pvmf) {
|
|
SAY("pvmf is NULL\n");
|
|
return retcode;
|
|
}
|
|
|
|
k = (pvmf->pgoff) / (FRAME_BUFFER_SIZE/PAGE_SIZE);
|
|
m = (pvmf->pgoff) % (FRAME_BUFFER_SIZE/PAGE_SIZE);
|
|
|
|
if (!m)
|
|
JOT(4, "%4i=k, %4i=m\n", k, m);
|
|
else
|
|
JOT(16, "%4i=k, %4i=m\n", k, m);
|
|
|
|
if ((0 > k) || (FRAME_BUFFER_MANY <= k)) {
|
|
SAY("ERROR: buffer index %i out of range\n", k);
|
|
return retcode;
|
|
}
|
|
if ((0 > m) || (FRAME_BUFFER_SIZE/PAGE_SIZE <= m)) {
|
|
SAY("ERROR: page number %i out of range\n", m);
|
|
return retcode;
|
|
}
|
|
peasycap = pvma->vm_private_data;
|
|
if (NULL == peasycap) {
|
|
SAY("ERROR: peasycap is NULL\n");
|
|
return retcode;
|
|
}
|
|
mutex_lock(&(peasycap->mutex_mmap_video[0]));
|
|
/*---------------------------------------------------------------------------*/
|
|
pbuf = peasycap->frame_buffer[k][m].pgo;
|
|
if (NULL == pbuf) {
|
|
SAY("ERROR: pbuf is NULL\n");
|
|
goto finish;
|
|
}
|
|
page = virt_to_page(pbuf);
|
|
if (NULL == page) {
|
|
SAY("ERROR: page is NULL\n");
|
|
goto finish;
|
|
}
|
|
get_page(page);
|
|
/*---------------------------------------------------------------------------*/
|
|
finish:
|
|
mutex_unlock(&(peasycap->mutex_mmap_video[0]));
|
|
if (NULL == page) {
|
|
SAY("ERROR: page is NULL after get_page(page)\n");
|
|
} else {
|
|
pvmf->page = page;
|
|
retcode = VM_FAULT_MINOR;
|
|
}
|
|
return retcode;
|
|
}
|
|
/*****************************************************************************/
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* ON COMPLETION OF A VIDEO URB ITS DATA IS COPIED TO THE FIELD BUFFERS
|
|
* PROVIDED peasycap->video_idle IS ZER0. REGARDLESS OF THIS BEING TRUE,
|
|
* IT IS RESUBMITTED PROVIDED peasycap->video_isoc_streaming IS NOT ZERO.
|
|
*
|
|
* THIS FUNCTION IS AN INTERRUPT SERVICE ROUTINE AND MUST NOT SLEEP.
|
|
*
|
|
* INFORMATION ABOUT THE VALIDITY OF THE CONTENTS OF THE FIELD BUFFER ARE
|
|
* STORED IN THE TWO-BYTE STATUS PARAMETER
|
|
* peasycap->field_buffer[peasycap->field_fill][0].kount
|
|
* NOTICE THAT THE INFORMATION IS STORED ONLY WITH PAGE 0 OF THE FIELD BUFFER.
|
|
*
|
|
* THE LOWER BYTE CONTAINS THE FIELD PARITY BYTE FURNISHED BY THE SAA7113H
|
|
* CHIP.
|
|
*
|
|
* THE UPPER BYTE IS ZERO IF NO PROBLEMS, OTHERWISE:
|
|
* 0 != (kount & 0x8000) => AT LEAST ONE URB COMPLETED WITH ERRORS
|
|
* 0 != (kount & 0x4000) => BUFFER HAS TOO MUCH DATA
|
|
* 0 != (kount & 0x2000) => BUFFER HAS NOT ENOUGH DATA
|
|
* 0 != (kount & 0x0400) => FIELD WAS SUBMITTED BY BRIDGER ROUTINE
|
|
* 0 != (kount & 0x0200) => FIELD BUFFER NOT YET CHECKED
|
|
* 0 != (kount & 0x0100) => BUFFER HAS TWO EXTRA BYTES - WHY?
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
easycap_complete(struct urb *purb)
|
|
{
|
|
static int mt;
|
|
struct easycap *peasycap;
|
|
struct data_buffer *pfield_buffer;
|
|
char errbuf[16];
|
|
int i, more, much, leap, rc, last;
|
|
int videofieldamount;
|
|
unsigned int override;
|
|
int framestatus, framelength, frameactual, frameoffset;
|
|
__u8 *pu;
|
|
#if defined(BRIDGER)
|
|
struct timeval timeval;
|
|
long long usec;
|
|
#endif /*BRIDGER*/
|
|
|
|
if (NULL == purb) {
|
|
SAY("ERROR: easycap_complete(): purb is NULL\n");
|
|
return;
|
|
}
|
|
peasycap = purb->context;
|
|
if (NULL == peasycap) {
|
|
SAY("ERROR: easycap_complete(): peasycap is NULL\n");
|
|
return;
|
|
}
|
|
|
|
if (peasycap->video_eof)
|
|
return;
|
|
|
|
for (i = 0; i < VIDEO_ISOC_BUFFER_MANY; i++)
|
|
if (purb->transfer_buffer == peasycap->video_isoc_buffer[i].pgo)
|
|
break;
|
|
JOT(16, "%2i=urb\n", i);
|
|
last = peasycap->video_isoc_sequence;
|
|
if ((((VIDEO_ISOC_BUFFER_MANY - 1) == last) && \
|
|
(0 != i)) || \
|
|
(((VIDEO_ISOC_BUFFER_MANY - 1) != last) && \
|
|
((last + 1) != i))) {
|
|
SAY("ERROR: out-of-order urbs %i,%i ... continuing\n", last, i);
|
|
}
|
|
peasycap->video_isoc_sequence = i;
|
|
|
|
if (peasycap->video_idle) {
|
|
JOT(16, "%i=video_idle %i=video_isoc_streaming\n", \
|
|
peasycap->video_idle, peasycap->video_isoc_streaming);
|
|
if (peasycap->video_isoc_streaming) {
|
|
rc = usb_submit_urb(purb, GFP_ATOMIC);
|
|
if (0 != rc) {
|
|
SAY("ERROR: while %i=video_idle, " \
|
|
"usb_submit_urb() failed with rc:\n", \
|
|
peasycap->video_idle);
|
|
switch (rc) {
|
|
case -ENOMEM: {
|
|
SAY("ENOMEM\n");
|
|
break;
|
|
}
|
|
case -ENODEV: {
|
|
SAY("ENODEV\n");
|
|
break;
|
|
}
|
|
case -ENXIO: {
|
|
SAY("ENXIO\n");
|
|
break;
|
|
}
|
|
case -EINVAL: {
|
|
SAY("EINVAL\n");
|
|
break;
|
|
}
|
|
case -EAGAIN: {
|
|
SAY("EAGAIN\n");
|
|
break;
|
|
}
|
|
case -EFBIG: {
|
|
SAY("EFBIG\n");
|
|
break;
|
|
}
|
|
case -EPIPE: {
|
|
SAY("EPIPE\n");
|
|
break;
|
|
}
|
|
case -EMSGSIZE: {
|
|
SAY("EMSGSIZE\n");
|
|
break;
|
|
}
|
|
case -ENOSPC: {
|
|
SAY("ENOSPC\n");
|
|
break;
|
|
}
|
|
default: {
|
|
SAY("0x%08X\n", rc);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
override = 0;
|
|
/*---------------------------------------------------------------------------*/
|
|
if (FIELD_BUFFER_MANY <= peasycap->field_fill) {
|
|
SAY("ERROR: bad peasycap->field_fill\n");
|
|
return;
|
|
}
|
|
if (purb->status) {
|
|
if ((-ESHUTDOWN == purb->status) || (-ENOENT == purb->status)) {
|
|
JOT(8, "urb status -ESHUTDOWN or -ENOENT\n");
|
|
return;
|
|
}
|
|
|
|
(peasycap->field_buffer[peasycap->field_fill][0].kount) |= 0x8000 ;
|
|
SAY("ERROR: bad urb status:\n");
|
|
switch (purb->status) {
|
|
case -EINPROGRESS: {
|
|
SAY("-EINPROGRESS\n"); break;
|
|
}
|
|
case -ENOSR: {
|
|
SAY("-ENOSR\n"); break;
|
|
}
|
|
case -EPIPE: {
|
|
SAY("-EPIPE\n"); break;
|
|
}
|
|
case -EOVERFLOW: {
|
|
SAY("-EOVERFLOW\n"); break;
|
|
}
|
|
case -EPROTO: {
|
|
SAY("-EPROTO\n"); break;
|
|
}
|
|
case -EILSEQ: {
|
|
SAY("-EILSEQ\n"); break;
|
|
}
|
|
case -ETIMEDOUT: {
|
|
SAY("-ETIMEDOUT\n"); break;
|
|
}
|
|
case -EMSGSIZE: {
|
|
SAY("-EMSGSIZE\n"); break;
|
|
}
|
|
case -EOPNOTSUPP: {
|
|
SAY("-EOPNOTSUPP\n"); break;
|
|
}
|
|
case -EPFNOSUPPORT: {
|
|
SAY("-EPFNOSUPPORT\n"); break;
|
|
}
|
|
case -EAFNOSUPPORT: {
|
|
SAY("-EAFNOSUPPORT\n"); break;
|
|
}
|
|
case -EADDRINUSE: {
|
|
SAY("-EADDRINUSE\n"); break;
|
|
}
|
|
case -EADDRNOTAVAIL: {
|
|
SAY("-EADDRNOTAVAIL\n"); break;
|
|
}
|
|
case -ENOBUFS: {
|
|
SAY("-ENOBUFS\n"); break;
|
|
}
|
|
case -EISCONN: {
|
|
SAY("-EISCONN\n"); break;
|
|
}
|
|
case -ENOTCONN: {
|
|
SAY("-ENOTCONN\n"); break;
|
|
}
|
|
case -ESHUTDOWN: {
|
|
SAY("-ESHUTDOWN\n"); break;
|
|
}
|
|
case -ENOENT: {
|
|
SAY("-ENOENT\n"); break;
|
|
}
|
|
case -ECONNRESET: {
|
|
SAY("-ECONNRESET\n"); break;
|
|
}
|
|
case -ENOSPC: {
|
|
SAY("ENOSPC\n"); break;
|
|
}
|
|
default: {
|
|
SAY("unknown error code 0x%08X\n", purb->status); break;
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
} else {
|
|
for (i = 0; i < purb->number_of_packets; i++) {
|
|
if (0 != purb->iso_frame_desc[i].status) {
|
|
(peasycap->field_buffer\
|
|
[peasycap->field_fill][0].kount) |= 0x8000 ;
|
|
switch (purb->iso_frame_desc[i].status) {
|
|
case 0: {
|
|
strcpy(&errbuf[0], "OK"); break;
|
|
}
|
|
case -ENOENT: {
|
|
strcpy(&errbuf[0], "-ENOENT"); break;
|
|
}
|
|
case -EINPROGRESS: {
|
|
strcpy(&errbuf[0], "-EINPROGRESS"); break;
|
|
}
|
|
case -EPROTO: {
|
|
strcpy(&errbuf[0], "-EPROTO"); break;
|
|
}
|
|
case -EILSEQ: {
|
|
strcpy(&errbuf[0], "-EILSEQ"); break;
|
|
}
|
|
case -ETIME: {
|
|
strcpy(&errbuf[0], "-ETIME"); break;
|
|
}
|
|
case -ETIMEDOUT: {
|
|
strcpy(&errbuf[0], "-ETIMEDOUT"); break;
|
|
}
|
|
case -EPIPE: {
|
|
strcpy(&errbuf[0], "-EPIPE"); break;
|
|
}
|
|
case -ECOMM: {
|
|
strcpy(&errbuf[0], "-ECOMM"); break;
|
|
}
|
|
case -ENOSR: {
|
|
strcpy(&errbuf[0], "-ENOSR"); break;
|
|
}
|
|
case -EOVERFLOW: {
|
|
strcpy(&errbuf[0], "-EOVERFLOW"); break;
|
|
}
|
|
case -EREMOTEIO: {
|
|
strcpy(&errbuf[0], "-EREMOTEIO"); break;
|
|
}
|
|
case -ENODEV: {
|
|
strcpy(&errbuf[0], "-ENODEV"); break;
|
|
}
|
|
case -EXDEV: {
|
|
strcpy(&errbuf[0], "-EXDEV"); break;
|
|
}
|
|
case -EINVAL: {
|
|
strcpy(&errbuf[0], "-EINVAL"); break;
|
|
}
|
|
case -ECONNRESET: {
|
|
strcpy(&errbuf[0], "-ECONNRESET"); break;
|
|
}
|
|
case -ENOSPC: {
|
|
SAY("ENOSPC\n"); break;
|
|
}
|
|
case -ESHUTDOWN: {
|
|
strcpy(&errbuf[0], "-ESHUTDOWN"); break;
|
|
}
|
|
default: {
|
|
strcpy(&errbuf[0], "unknown error"); break;
|
|
}
|
|
}
|
|
}
|
|
framestatus = purb->iso_frame_desc[i].status;
|
|
framelength = purb->iso_frame_desc[i].length;
|
|
frameactual = purb->iso_frame_desc[i].actual_length;
|
|
frameoffset = purb->iso_frame_desc[i].offset;
|
|
|
|
JOT(16, "frame[%2i]:" \
|
|
"%4i=status " \
|
|
"%4i=actual " \
|
|
"%4i=length " \
|
|
"%5i=offset\n", \
|
|
i, framestatus, frameactual, framelength, frameoffset);
|
|
if (!purb->iso_frame_desc[i].status) {
|
|
more = purb->iso_frame_desc[i].actual_length;
|
|
pfield_buffer = &peasycap->field_buffer\
|
|
[peasycap->field_fill][peasycap->field_page];
|
|
videofieldamount = (peasycap->field_page * \
|
|
PAGE_SIZE) + \
|
|
(int)(pfield_buffer->pto - pfield_buffer->pgo);
|
|
if (4 == more)
|
|
mt++;
|
|
if (4 < more) {
|
|
if (mt) {
|
|
JOT(8, "%4i empty video urb frames\n", mt);
|
|
mt = 0;
|
|
}
|
|
if (FIELD_BUFFER_MANY <= peasycap->field_fill) {
|
|
SAY("ERROR: bad peasycap->field_fill\n");
|
|
return;
|
|
}
|
|
if (FIELD_BUFFER_SIZE/PAGE_SIZE <= \
|
|
peasycap->field_page) {
|
|
SAY("ERROR: bad peasycap->field_page\n");
|
|
return;
|
|
}
|
|
pfield_buffer = &peasycap->field_buffer\
|
|
[peasycap->field_fill][peasycap->field_page];
|
|
pu = (__u8 *)(purb->transfer_buffer + \
|
|
purb->iso_frame_desc[i].offset);
|
|
if (0x80 & *pu)
|
|
leap = 8;
|
|
else
|
|
leap = 4;
|
|
/*--------------------------------------------------------------------------*/
|
|
/*
|
|
* EIGHT-BYTE END-OF-VIDEOFIELD MARKER.
|
|
* NOTE: A SUCCESSION OF URB FRAMES FOLLOWING THIS ARE EMPTY,
|
|
* CORRESPONDING TO THE FIELD FLYBACK (VERTICAL BLANKING) PERIOD.
|
|
*
|
|
* PROVIDED THE FIELD BUFFER CONTAINS GOOD DATA AS INDICATED BY A ZERO UPPER
|
|
* BYTE OF
|
|
* peasycap->field_buffer[peasycap->field_fill][0].kount
|
|
* THE CONTENTS OF THE FIELD BUFFER ARE OFFERED TO dqbuf(), field_read IS
|
|
* UPDATED AND field_fill IS BUMPED. IF THE FIELD BUFFER CONTAINS BAD DATA
|
|
* NOTHING IS OFFERED TO dqbuf().
|
|
*
|
|
* THE DECISION ON WHETHER THE PARITY OF THE OFFERED FIELD BUFFER IS RIGHT
|
|
* RESTS WITH dqbuf().
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
if ((8 == more) || override) {
|
|
if (videofieldamount > \
|
|
peasycap->videofieldamount) {
|
|
if (2 == videofieldamount - \
|
|
peasycap->\
|
|
videofieldamount)
|
|
(peasycap->field_buffer\
|
|
[peasycap->field_fill]\
|
|
[0].kount) |= 0x0100;
|
|
else
|
|
(peasycap->field_buffer\
|
|
[peasycap->field_fill]\
|
|
[0].kount) |= 0x4000;
|
|
} else if (videofieldamount < \
|
|
peasycap->\
|
|
videofieldamount) {
|
|
(peasycap->field_buffer\
|
|
[peasycap->field_fill]\
|
|
[0].kount) |= 0x2000;
|
|
}
|
|
if (!(0xFF00 & peasycap->field_buffer\
|
|
[peasycap->field_fill]\
|
|
[0].kount)) {
|
|
(peasycap->video_junk)--;
|
|
if (-16 > peasycap->video_junk)
|
|
peasycap->video_junk = -16;
|
|
peasycap->field_read = \
|
|
(peasycap->\
|
|
field_fill)++;
|
|
|
|
if (FIELD_BUFFER_MANY <= \
|
|
peasycap->field_fill)
|
|
peasycap->field_fill = 0;
|
|
peasycap->field_page = 0;
|
|
pfield_buffer = &peasycap->\
|
|
field_buffer\
|
|
[peasycap->field_fill]\
|
|
[peasycap->field_page];
|
|
pfield_buffer->pto = \
|
|
pfield_buffer->pgo;
|
|
|
|
JOT(8, "bumped to: %i=peasycap->" \
|
|
"field_fill %i=parity\n", \
|
|
peasycap->field_fill, \
|
|
0x00FF & pfield_buffer->kount);
|
|
JOT(8, "field buffer %i has %i " \
|
|
"bytes fit to be read\n", \
|
|
peasycap->field_read, \
|
|
videofieldamount);
|
|
JOT(8, "wakeup call to wq_video, " \
|
|
"%i=field_read %i=field_fill "\
|
|
"%i=parity\n", \
|
|
peasycap->field_read, \
|
|
peasycap->field_fill, \
|
|
0x00FF & peasycap->\
|
|
field_buffer[peasycap->\
|
|
field_read][0].kount);
|
|
wake_up_interruptible(&(peasycap->\
|
|
wq_video));
|
|
do_gettimeofday(&peasycap->timeval7);
|
|
} else {
|
|
peasycap->video_junk++;
|
|
JOT(8, "field buffer %i had %i " \
|
|
"bytes, now discarded\n", \
|
|
peasycap->field_fill, \
|
|
videofieldamount);
|
|
|
|
(peasycap->field_fill)++;
|
|
|
|
if (FIELD_BUFFER_MANY <= \
|
|
peasycap->field_fill)
|
|
peasycap->field_fill = 0;
|
|
peasycap->field_page = 0;
|
|
pfield_buffer = \
|
|
&peasycap->field_buffer\
|
|
[peasycap->field_fill]\
|
|
[peasycap->field_page];
|
|
pfield_buffer->pto = \
|
|
pfield_buffer->pgo;
|
|
|
|
JOT(8, "bumped to: %i=peasycap->" \
|
|
"field_fill %i=parity\n", \
|
|
peasycap->field_fill, \
|
|
0x00FF & pfield_buffer->kount);
|
|
}
|
|
if (8 == more) {
|
|
JOT(8, "end-of-field: received " \
|
|
"parity byte 0x%02X\n", \
|
|
(0xFF & *pu));
|
|
if (0x40 & *pu)
|
|
pfield_buffer->kount = 0x0000;
|
|
else
|
|
pfield_buffer->kount = 0x0001;
|
|
JOT(8, "end-of-field: 0x%02X=kount\n",\
|
|
0xFF & pfield_buffer->kount);
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* COPY more BYTES FROM ISOC BUFFER TO FIELD BUFFER
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
pu += leap;
|
|
more -= leap;
|
|
|
|
if (FIELD_BUFFER_MANY <= peasycap->field_fill) {
|
|
SAY("ERROR: bad peasycap->field_fill\n");
|
|
return;
|
|
}
|
|
if (FIELD_BUFFER_SIZE/PAGE_SIZE <= \
|
|
peasycap->field_page) {
|
|
SAY("ERROR: bad peasycap->field_page\n");
|
|
return;
|
|
}
|
|
pfield_buffer = &peasycap->field_buffer\
|
|
[peasycap->field_fill][peasycap->field_page];
|
|
while (more) {
|
|
pfield_buffer = &peasycap->field_buffer\
|
|
[peasycap->field_fill]\
|
|
[peasycap->field_page];
|
|
if (PAGE_SIZE < (pfield_buffer->pto - \
|
|
pfield_buffer->pgo)) {
|
|
SAY("ERROR: bad pfield_buffer->pto\n");
|
|
return;
|
|
}
|
|
if (PAGE_SIZE == (pfield_buffer->pto - \
|
|
pfield_buffer->pgo)) {
|
|
(peasycap->field_page)++;
|
|
if (FIELD_BUFFER_SIZE/PAGE_SIZE <= \
|
|
peasycap->field_page) {
|
|
JOT(16, "wrapping peasycap->" \
|
|
"field_page\n");
|
|
peasycap->field_page = 0;
|
|
}
|
|
pfield_buffer = &peasycap->\
|
|
field_buffer\
|
|
[peasycap->field_fill]\
|
|
[peasycap->field_page];
|
|
pfield_buffer->pto = \
|
|
pfield_buffer->pgo;
|
|
}
|
|
|
|
much = PAGE_SIZE - (int)(pfield_buffer->pto - \
|
|
pfield_buffer->pgo);
|
|
|
|
if (much > more)
|
|
much = more;
|
|
memcpy(pfield_buffer->pto, pu, much);
|
|
pu += much;
|
|
(pfield_buffer->pto) += much;
|
|
more -= much;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
*
|
|
*
|
|
* *** UNDER DEVELOPMENT/TESTING - NOT READY YET! ***
|
|
*
|
|
*
|
|
*
|
|
* VIDEOTAPES MAY HAVE BEEN MANUALLY PAUSED AND RESTARTED DURING RECORDING.
|
|
* THIS CAUSES LOSS OF SYNC, CONFUSING DOWNSTREAM USERSPACE PROGRAMS WHICH
|
|
* MAY INTERPRET THE INTERRUPTION AS A SYMPTOM OF LATENCY. TO OVERCOME THIS
|
|
* THE DRIVER BRIDGES THE HIATUS BY SENDING DUMMY VIDEO FRAMES AT ROUGHLY
|
|
* THE RIGHT TIME INTERVALS IN THE HOPE OF PERSUADING THE DOWNSTREAM USERSPACE
|
|
* PROGRAM TO RESUME NORMAL SERVICE WHEN THE INTERRUPTION IS OVER.
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
#if defined(BRIDGER)
|
|
do_gettimeofday(&timeval);
|
|
if (peasycap->timeval7.tv_sec) {
|
|
usec = 1000000*(timeval.tv_sec - peasycap->timeval7.tv_sec) + \
|
|
(timeval.tv_usec - peasycap->timeval7.tv_usec);
|
|
if (usec > (peasycap->usec + peasycap->tolerate)) {
|
|
JOT(8, "bridging hiatus\n");
|
|
peasycap->video_junk = 0;
|
|
peasycap->field_buffer[peasycap->field_fill][0].kount |= 0x0400;
|
|
|
|
peasycap->field_read = (peasycap->field_fill)++;
|
|
|
|
if (FIELD_BUFFER_MANY <= peasycap->field_fill) \
|
|
peasycap->field_fill = 0;
|
|
peasycap->field_page = 0;
|
|
pfield_buffer = &peasycap->field_buffer\
|
|
[peasycap->field_fill][peasycap->field_page];
|
|
pfield_buffer->pto = pfield_buffer->pgo;
|
|
|
|
JOT(8, "bumped to: %i=peasycap->field_fill %i=parity\n", \
|
|
peasycap->field_fill, 0x00FF & pfield_buffer->kount);
|
|
JOT(8, "field buffer %i has %i bytes to be overwritten\n", \
|
|
peasycap->field_read, videofieldamount);
|
|
JOT(8, "wakeup call to wq_video, " \
|
|
"%i=field_read %i=field_fill %i=parity\n", \
|
|
peasycap->field_read, peasycap->field_fill, \
|
|
0x00FF & \
|
|
peasycap->field_buffer[peasycap->field_read][0].kount);
|
|
wake_up_interruptible(&(peasycap->wq_video));
|
|
do_gettimeofday(&peasycap->timeval7);
|
|
}
|
|
}
|
|
#endif /*BRIDGER*/
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* RESUBMIT THIS URB, UNLESS A SEVERE PERSISTENT ERROR CONDITION EXISTS.
|
|
*
|
|
* IF THE WAIT QUEUES ARE NOT CLEARED IN RESPONSE TO AN ERROR CONDITION
|
|
* THE USERSPACE PROGRAM, E.G. mplayer, MAY HANG ON EXIT. BEWARE.
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
if (VIDEO_ISOC_BUFFER_MANY <= peasycap->video_junk) {
|
|
SAY("easycap driver shutting down on condition green\n");
|
|
peasycap->video_eof = 1;
|
|
peasycap->audio_eof = 1;
|
|
peasycap->video_junk = -VIDEO_ISOC_BUFFER_MANY;
|
|
wake_up_interruptible(&(peasycap->wq_video));
|
|
wake_up_interruptible(&(peasycap->wq_audio));
|
|
return;
|
|
}
|
|
if (peasycap->video_isoc_streaming) {
|
|
rc = usb_submit_urb(purb, GFP_ATOMIC);
|
|
if (0 != rc) {
|
|
SAY("ERROR: while %i=video_idle, usb_submit_urb() failed " \
|
|
"with rc:\n", peasycap->video_idle);
|
|
switch (rc) {
|
|
case -ENOMEM: {
|
|
SAY("ENOMEM\n"); break;
|
|
}
|
|
case -ENODEV: {
|
|
SAY("ENODEV\n"); break;
|
|
}
|
|
case -ENXIO: {
|
|
SAY("ENXIO\n"); break;
|
|
}
|
|
case -EINVAL: {
|
|
SAY("EINVAL\n"); break;
|
|
}
|
|
case -EAGAIN: {
|
|
SAY("EAGAIN\n"); break;
|
|
}
|
|
case -EFBIG: {
|
|
SAY("EFBIG\n"); break;
|
|
}
|
|
case -EPIPE: {
|
|
SAY("EPIPE\n"); break;
|
|
}
|
|
case -EMSGSIZE: {
|
|
SAY("EMSGSIZE\n"); break;
|
|
}
|
|
case -ENOSPC: {
|
|
SAY("ENOSPC\n"); break;
|
|
}
|
|
default: {
|
|
SAY("0x%08X\n", rc); break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
/*****************************************************************************/
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
*
|
|
* FIXME
|
|
*
|
|
*
|
|
* THIS FUNCTION ASSUMES THAT, ON EACH AND EVERY OCCASION THAT THE DEVICE IS
|
|
* PHYSICALLY PLUGGED IN, INTERFACE 0 IS PROBED FIRST.
|
|
* IF THIS IS NOT TRUE, THERE IS THE POSSIBILITY OF AN Oops.
|
|
*
|
|
* THIS HAS NEVER BEEN A PROBLEM IN PRACTICE, BUT SOMETHING SEEMS WRONG HERE.
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
int
|
|
easycap_usb_probe(struct usb_interface *pusb_interface, \
|
|
const struct usb_device_id *id)
|
|
{
|
|
struct usb_device *pusb_device, *pusb_device1;
|
|
struct usb_host_interface *pusb_host_interface;
|
|
struct usb_endpoint_descriptor *pepd;
|
|
struct usb_interface_descriptor *pusb_interface_descriptor;
|
|
struct usb_interface_assoc_descriptor *pusb_interface_assoc_descriptor;
|
|
struct urb *purb;
|
|
static struct easycap *peasycap /*=NULL*/;
|
|
struct data_urb *pdata_urb;
|
|
size_t wMaxPacketSize;
|
|
int ISOCwMaxPacketSize;
|
|
int BULKwMaxPacketSize;
|
|
int INTwMaxPacketSize;
|
|
int CTRLwMaxPacketSize;
|
|
__u8 bEndpointAddress;
|
|
__u8 ISOCbEndpointAddress;
|
|
__u8 INTbEndpointAddress;
|
|
int isin, i, j, k, m;
|
|
__u8 bInterfaceNumber;
|
|
__u8 bInterfaceClass;
|
|
__u8 bInterfaceSubClass;
|
|
void *pbuf;
|
|
int okalt[8], isokalt;
|
|
int okepn[8], isokepn;
|
|
int okmps[8], isokmps;
|
|
int maxpacketsize;
|
|
int rc;
|
|
|
|
JOT(4, "\n");
|
|
|
|
if ((struct usb_interface *)NULL == pusb_interface) {
|
|
SAY("ERROR: pusb_interface is NULL\n");
|
|
return -EFAULT;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* GET POINTER TO STRUCTURE usb_device
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
pusb_device1 = container_of(pusb_interface->dev.parent, \
|
|
struct usb_device, dev);
|
|
if ((struct usb_device *)NULL == pusb_device1) {
|
|
SAY("ERROR: pusb_device1 is NULL\n");
|
|
return -EFAULT;
|
|
}
|
|
pusb_device = usb_get_dev(pusb_device1);
|
|
if ((struct usb_device *)NULL == pusb_device) {
|
|
SAY("ERROR: pusb_device is NULL\n");
|
|
return -EFAULT;
|
|
}
|
|
if ((unsigned long int)pusb_device1 != (unsigned long int)pusb_device) {
|
|
JOT(4, "ERROR: pusb_device1 != pusb_device\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
JOT(4, "bNumConfigurations=%i\n", pusb_device->descriptor.bNumConfigurations);
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
pusb_host_interface = pusb_interface->cur_altsetting;
|
|
if (NULL == pusb_host_interface) {
|
|
SAY("ERROR: pusb_host_interface is NULL\n");
|
|
return -EFAULT;
|
|
}
|
|
pusb_interface_descriptor = &(pusb_host_interface->desc);
|
|
if (NULL == pusb_interface_descriptor) {
|
|
SAY("ERROR: pusb_interface_descriptor is NULL\n");
|
|
return -EFAULT;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* GET PROPERTIES OF PROBED INTERFACE
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
bInterfaceNumber = pusb_interface_descriptor->bInterfaceNumber;
|
|
bInterfaceClass = pusb_interface_descriptor->bInterfaceClass;
|
|
bInterfaceSubClass = pusb_interface_descriptor->bInterfaceSubClass;
|
|
|
|
JOT(4, "intf[%i]: pusb_interface->num_altsetting=%i\n", \
|
|
bInterfaceNumber, pusb_interface->num_altsetting);
|
|
JOT(4, "intf[%i]: pusb_interface->cur_altsetting - " \
|
|
"pusb_interface->altsetting=%li\n", bInterfaceNumber, \
|
|
(long int)(pusb_interface->cur_altsetting - \
|
|
pusb_interface->altsetting));
|
|
switch (bInterfaceClass) {
|
|
case USB_CLASS_AUDIO: {
|
|
JOT(4, "intf[%i]: bInterfaceClass=0x%02X=USB_CLASS_AUDIO\n", \
|
|
bInterfaceNumber, bInterfaceClass); break;
|
|
}
|
|
case USB_CLASS_VIDEO: {
|
|
JOT(4, "intf[%i]: bInterfaceClass=0x%02X=USB_CLASS_VIDEO\n", \
|
|
bInterfaceNumber, bInterfaceClass); break;
|
|
}
|
|
case USB_CLASS_VENDOR_SPEC: {
|
|
JOT(4, "intf[%i]: bInterfaceClass=0x%02X=USB_CLASS_VENDOR_SPEC\n", \
|
|
bInterfaceNumber, bInterfaceClass); break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
switch (bInterfaceSubClass) {
|
|
case 0x01: {
|
|
JOT(4, "intf[%i]: bInterfaceSubClass=0x%02X=AUDIOCONTROL\n", \
|
|
bInterfaceNumber, bInterfaceSubClass); break;
|
|
}
|
|
case 0x02: {
|
|
JOT(4, "intf[%i]: bInterfaceSubClass=0x%02X=AUDIOSTREAMING\n", \
|
|
bInterfaceNumber, bInterfaceSubClass); break;
|
|
}
|
|
case 0x03: {
|
|
JOT(4, "intf[%i]: bInterfaceSubClass=0x%02X=MIDISTREAMING\n", \
|
|
bInterfaceNumber, bInterfaceSubClass); break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
pusb_interface_assoc_descriptor = pusb_interface->intf_assoc;
|
|
if (NULL != pusb_interface_assoc_descriptor) {
|
|
JOT(4, "intf[%i]: bFirstInterface=0x%02X bInterfaceCount=0x%02X\n", \
|
|
bInterfaceNumber, \
|
|
pusb_interface_assoc_descriptor->bFirstInterface, \
|
|
pusb_interface_assoc_descriptor->bInterfaceCount);
|
|
} else {
|
|
JOT(4, "intf[%i]: pusb_interface_assoc_descriptor is NULL\n", \
|
|
bInterfaceNumber);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* A NEW struct easycap IS ALWAYS ALLOCATED WHEN INTERFACE 0 IS PROBED.
|
|
* IT IS NOT POSSIBLE HERE TO FREE ANY EXISTING struct easycap. THIS
|
|
* SHOULD HAVE BEEN DONE BY easycap_delete() WHEN THE DEVICE WAS PHYSICALLY
|
|
* UNPLUGGED.
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
if (0 == bInterfaceNumber) {
|
|
peasycap = kzalloc(sizeof(struct easycap), GFP_KERNEL);
|
|
if (NULL == peasycap) {
|
|
SAY("ERROR: Could not allocate peasycap\n");
|
|
return -ENOMEM;
|
|
} else {
|
|
peasycap->allocation_video_struct = sizeof(struct easycap);
|
|
peasycap->allocation_video_page = 0;
|
|
peasycap->allocation_video_urb = 0;
|
|
peasycap->allocation_audio_struct = 0;
|
|
peasycap->allocation_audio_page = 0;
|
|
peasycap->allocation_audio_urb = 0;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* INITIALIZE THE NEW easycap STRUCTURE.
|
|
* NO PARAMETERS ARE SPECIFIED HERE REQUIRING THE SETTING OF REGISTERS.
|
|
* THAT IS DONE FIRST BY easycap_open() AND LATER BY easycap_ioctl().
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
peasycap->pusb_device = pusb_device;
|
|
peasycap->pusb_interface = pusb_interface;
|
|
|
|
kref_init(&peasycap->kref);
|
|
JOT(8, "intf[%i]: after kref_init(..._video) " \
|
|
"%i=peasycap->kref.refcount.counter\n", \
|
|
bInterfaceNumber, peasycap->kref.refcount.counter);
|
|
|
|
init_waitqueue_head(&(peasycap->wq_video));
|
|
init_waitqueue_head(&(peasycap->wq_audio));
|
|
|
|
mutex_init(&(peasycap->mutex_timeval0));
|
|
mutex_init(&(peasycap->mutex_timeval1));
|
|
|
|
for (k = 0; k < FRAME_BUFFER_MANY; k++)
|
|
mutex_init(&(peasycap->mutex_mmap_video[k]));
|
|
|
|
peasycap->ilk = 0;
|
|
peasycap->microphone = false;
|
|
|
|
peasycap->video_interface = -1;
|
|
peasycap->video_altsetting_on = -1;
|
|
peasycap->video_altsetting_off = -1;
|
|
peasycap->video_endpointnumber = -1;
|
|
peasycap->video_isoc_maxframesize = -1;
|
|
peasycap->video_isoc_buffer_size = -1;
|
|
|
|
peasycap->audio_interface = -1;
|
|
peasycap->audio_altsetting_on = -1;
|
|
peasycap->audio_altsetting_off = -1;
|
|
peasycap->audio_endpointnumber = -1;
|
|
peasycap->audio_isoc_maxframesize = -1;
|
|
peasycap->audio_isoc_buffer_size = -1;
|
|
|
|
peasycap->frame_buffer_many = FRAME_BUFFER_MANY;
|
|
|
|
if ((struct mutex *)NULL == &(peasycap->mutex_mmap_video[0])) {
|
|
SAY("ERROR: &(peasycap->mutex_mmap_video[%i]) is NULL\n", 0);
|
|
return -EFAULT;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* DYNAMICALLY FILL IN THE AVAILABLE FORMATS.
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
rc = fillin_formats();
|
|
if (0 > rc) {
|
|
SAY("ERROR: fillin_formats() returned %i\n", rc);
|
|
return -EFAULT;
|
|
}
|
|
JOT(4, "%i formats available\n", rc);
|
|
} else {
|
|
/*---------------------------------------------------------------------------*/
|
|
if ((struct easycap *)NULL == peasycap) {
|
|
SAY("ERROR: peasycap is NULL " \
|
|
"when probing interface %i\n", \
|
|
bInterfaceNumber);
|
|
return -EFAULT;
|
|
}
|
|
|
|
JOT(8, "kref_get() with %i=peasycap->kref.refcount.counter\n", \
|
|
(int)peasycap->kref.refcount.counter);
|
|
kref_get(&peasycap->kref);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
if ((USB_CLASS_VIDEO == bInterfaceClass) || \
|
|
(USB_CLASS_VENDOR_SPEC == bInterfaceClass)) {
|
|
if (-1 == peasycap->video_interface) {
|
|
peasycap->video_interface = bInterfaceNumber;
|
|
JOT(4, "setting peasycap->video_interface=%i\n", \
|
|
peasycap->video_interface);
|
|
} else {
|
|
if (peasycap->video_interface != bInterfaceNumber) {
|
|
SAY("ERROR: attempting to reset " \
|
|
"peasycap->video_interface\n");
|
|
SAY("...... continuing with " \
|
|
"%i=peasycap->video_interface\n", \
|
|
peasycap->video_interface);
|
|
}
|
|
}
|
|
} else if ((USB_CLASS_AUDIO == bInterfaceClass) && \
|
|
(0x02 == bInterfaceSubClass)) {
|
|
if (-1 == peasycap->audio_interface) {
|
|
peasycap->audio_interface = bInterfaceNumber;
|
|
JOT(4, "setting peasycap->audio_interface=%i\n", \
|
|
peasycap->audio_interface);
|
|
} else {
|
|
if (peasycap->audio_interface != bInterfaceNumber) {
|
|
SAY("ERROR: attempting to reset " \
|
|
"peasycap->audio_interface\n");
|
|
SAY("...... continuing with " \
|
|
"%i=peasycap->audio_interface\n", \
|
|
peasycap->audio_interface);
|
|
}
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* INVESTIGATE ALL ALTSETTINGS.
|
|
* DONE IN DETAIL BECAUSE USB DEVICE 05e1:0408 HAS DISPARATE INCARNATIONS.
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
isokalt = 0;
|
|
isokepn = 0;
|
|
isokmps = 0;
|
|
|
|
for (i = 0; i < pusb_interface->num_altsetting; i++) {
|
|
pusb_host_interface = &(pusb_interface->altsetting[i]);
|
|
if ((struct usb_host_interface *)NULL == pusb_host_interface) {
|
|
SAY("ERROR: pusb_host_interface is NULL\n");
|
|
return -EFAULT;
|
|
}
|
|
pusb_interface_descriptor = &(pusb_host_interface->desc);
|
|
if ((struct usb_interface_descriptor *)NULL == \
|
|
pusb_interface_descriptor) {
|
|
SAY("ERROR: pusb_interface_descriptor is NULL\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
JOT(4, "intf[%i]alt[%i]: desc.bDescriptorType=0x%02X\n", \
|
|
bInterfaceNumber, i, pusb_interface_descriptor->bDescriptorType);
|
|
JOT(4, "intf[%i]alt[%i]: desc.bInterfaceNumber=0x%02X\n", \
|
|
bInterfaceNumber, i, pusb_interface_descriptor->bInterfaceNumber);
|
|
JOT(4, "intf[%i]alt[%i]: desc.bAlternateSetting=0x%02X\n", \
|
|
bInterfaceNumber, i, pusb_interface_descriptor->bAlternateSetting);
|
|
JOT(4, "intf[%i]alt[%i]: desc.bNumEndpoints=0x%02X\n", \
|
|
bInterfaceNumber, i, pusb_interface_descriptor->bNumEndpoints);
|
|
JOT(4, "intf[%i]alt[%i]: desc.bInterfaceClass=0x%02X\n", \
|
|
bInterfaceNumber, i, pusb_interface_descriptor->bInterfaceClass);
|
|
JOT(4, "intf[%i]alt[%i]: desc.bInterfaceSubClass=0x%02X\n", \
|
|
bInterfaceNumber, i, pusb_interface_descriptor->bInterfaceSubClass);
|
|
JOT(4, "intf[%i]alt[%i]: desc.bInterfaceProtocol=0x%02X\n", \
|
|
bInterfaceNumber, i, pusb_interface_descriptor->bInterfaceProtocol);
|
|
JOT(4, "intf[%i]alt[%i]: desc.iInterface=0x%02X\n", \
|
|
bInterfaceNumber, i, pusb_interface_descriptor->iInterface);
|
|
|
|
ISOCwMaxPacketSize = -1;
|
|
BULKwMaxPacketSize = -1;
|
|
INTwMaxPacketSize = -1;
|
|
CTRLwMaxPacketSize = -1;
|
|
ISOCbEndpointAddress = 0;
|
|
INTbEndpointAddress = 0;
|
|
|
|
if (0 == pusb_interface_descriptor->bNumEndpoints)
|
|
JOT(4, "intf[%i]alt[%i] has no endpoints\n", \
|
|
bInterfaceNumber, i);
|
|
/*---------------------------------------------------------------------------*/
|
|
for (j = 0; j < pusb_interface_descriptor->bNumEndpoints; j++) {
|
|
pepd = &(pusb_host_interface->endpoint[j].desc);
|
|
if ((struct usb_endpoint_descriptor *)NULL == pepd) {
|
|
SAY("ERROR: pepd is NULL.\n");
|
|
SAY("...... skipping\n");
|
|
continue;
|
|
}
|
|
wMaxPacketSize = le16_to_cpu(pepd->wMaxPacketSize);
|
|
bEndpointAddress = pepd->bEndpointAddress;
|
|
|
|
JOT(4, "intf[%i]alt[%i]end[%i]: bEndpointAddress=0x%X\n", \
|
|
bInterfaceNumber, i, j, \
|
|
pepd->bEndpointAddress);
|
|
JOT(4, "intf[%i]alt[%i]end[%i]: bmAttributes=0x%X\n", \
|
|
bInterfaceNumber, i, j, \
|
|
pepd->bmAttributes);
|
|
JOT(4, "intf[%i]alt[%i]end[%i]: wMaxPacketSize=%i\n", \
|
|
bInterfaceNumber, i, j, \
|
|
pepd->wMaxPacketSize);
|
|
JOT(4, "intf[%i]alt[%i]end[%i]: bInterval=%i\n",
|
|
bInterfaceNumber, i, j, \
|
|
pepd->bInterval);
|
|
|
|
if (pepd->bEndpointAddress & USB_DIR_IN) {
|
|
JOT(4, "intf[%i]alt[%i]end[%i] is an IN endpoint\n",\
|
|
bInterfaceNumber, i, j);
|
|
isin = 1;
|
|
} else {
|
|
JOT(4, "intf[%i]alt[%i]end[%i] is an OUT endpoint\n",\
|
|
bInterfaceNumber, i, j);
|
|
SAY("ERROR: OUT endpoint unexpected\n");
|
|
SAY("...... continuing\n");
|
|
isin = 0;
|
|
}
|
|
if ((pepd->bmAttributes & \
|
|
USB_ENDPOINT_XFERTYPE_MASK) == \
|
|
USB_ENDPOINT_XFER_ISOC) {
|
|
JOT(4, "intf[%i]alt[%i]end[%i] is an ISOC endpoint\n",\
|
|
bInterfaceNumber, i, j);
|
|
if (isin) {
|
|
switch (bInterfaceClass) {
|
|
case USB_CLASS_VIDEO:
|
|
case USB_CLASS_VENDOR_SPEC: {
|
|
if (!peasycap) {
|
|
SAY("MISTAKE: " \
|
|
"peasycap is NULL\n");
|
|
return -EFAULT;
|
|
}
|
|
if (pepd->wMaxPacketSize) {
|
|
if (8 > isokalt) {
|
|
okalt[isokalt] = i;
|
|
JOT(4,\
|
|
"%i=okalt[%i]\n", \
|
|
okalt[isokalt], \
|
|
isokalt);
|
|
isokalt++;
|
|
}
|
|
if (8 > isokepn) {
|
|
okepn[isokepn] = \
|
|
pepd->\
|
|
bEndpointAddress & \
|
|
0x0F;
|
|
JOT(4,\
|
|
"%i=okepn[%i]\n", \
|
|
okepn[isokepn], \
|
|
isokepn);
|
|
isokepn++;
|
|
}
|
|
if (8 > isokmps) {
|
|
okmps[isokmps] = \
|
|
le16_to_cpu(pepd->\
|
|
wMaxPacketSize);
|
|
JOT(4,\
|
|
"%i=okmps[%i]\n", \
|
|
okmps[isokmps], \
|
|
isokmps);
|
|
isokmps++;
|
|
}
|
|
} else {
|
|
if (-1 == peasycap->\
|
|
video_altsetting_off) {
|
|
peasycap->\
|
|
video_altsetting_off =\
|
|
i;
|
|
JOT(4, "%i=video_" \
|
|
"altsetting_off " \
|
|
"<====\n", \
|
|
peasycap->\
|
|
video_altsetting_off);
|
|
} else {
|
|
SAY("ERROR: peasycap" \
|
|
"->video_altsetting_" \
|
|
"off already set\n");
|
|
SAY("...... " \
|
|
"continuing with " \
|
|
"%i=peasycap->video_" \
|
|
"altsetting_off\n", \
|
|
peasycap->\
|
|
video_altsetting_off);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case USB_CLASS_AUDIO: {
|
|
if (0x02 != bInterfaceSubClass)
|
|
break;
|
|
if (!peasycap) {
|
|
SAY("MISTAKE: " \
|
|
"peasycap is NULL\n");
|
|
return -EFAULT;
|
|
}
|
|
if (pepd->wMaxPacketSize) {
|
|
if (8 > isokalt) {
|
|
okalt[isokalt] = i ;
|
|
JOT(4,\
|
|
"%i=okalt[%i]\n", \
|
|
okalt[isokalt], \
|
|
isokalt);
|
|
isokalt++;
|
|
}
|
|
if (8 > isokepn) {
|
|
okepn[isokepn] = \
|
|
pepd->\
|
|
bEndpointAddress & \
|
|
0x0F;
|
|
JOT(4,\
|
|
"%i=okepn[%i]\n", \
|
|
okepn[isokepn], \
|
|
isokepn);
|
|
isokepn++;
|
|
}
|
|
if (8 > isokmps) {
|
|
okmps[isokmps] = \
|
|
le16_to_cpu(pepd->\
|
|
wMaxPacketSize);
|
|
JOT(4,\
|
|
"%i=okmps[%i]\n",\
|
|
okmps[isokmps], \
|
|
isokmps);
|
|
isokmps++;
|
|
}
|
|
} else {
|
|
if (-1 == peasycap->\
|
|
audio_altsetting_off) {
|
|
peasycap->\
|
|
audio_altsetting_off =\
|
|
i;
|
|
JOT(4, "%i=audio_" \
|
|
"altsetting_off " \
|
|
"<====\n", \
|
|
peasycap->\
|
|
audio_altsetting_off);
|
|
} else {
|
|
SAY("ERROR: peasycap" \
|
|
"->audio_altsetting_" \
|
|
"off already set\n");
|
|
SAY("...... " \
|
|
"continuing with " \
|
|
"%i=peasycap->\
|
|
audio_altsetting_" \
|
|
"off\n",
|
|
peasycap->\
|
|
audio_altsetting_off);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
} else if ((pepd->bmAttributes & \
|
|
USB_ENDPOINT_XFERTYPE_MASK) ==\
|
|
USB_ENDPOINT_XFER_BULK) {
|
|
JOT(4, "intf[%i]alt[%i]end[%i] is a BULK endpoint\n",\
|
|
bInterfaceNumber, i, j);
|
|
} else if ((pepd->bmAttributes & \
|
|
USB_ENDPOINT_XFERTYPE_MASK) ==\
|
|
USB_ENDPOINT_XFER_INT) {
|
|
JOT(4, "intf[%i]alt[%i]end[%i] is an INT endpoint\n",\
|
|
bInterfaceNumber, i, j);
|
|
} else {
|
|
JOT(4, "intf[%i]alt[%i]end[%i] is a CTRL endpoint\n",\
|
|
bInterfaceNumber, i, j);
|
|
}
|
|
if (0 == pepd->wMaxPacketSize) {
|
|
JOT(4, "intf[%i]alt[%i]end[%i] " \
|
|
"has zero packet size\n", \
|
|
bInterfaceNumber, i, j);
|
|
}
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* PERFORM INITIALIZATION OF THE PROBED INTERFACE
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
JOT(4, "initialization begins for interface %i\n", \
|
|
pusb_interface_descriptor->bInterfaceNumber);
|
|
switch (bInterfaceNumber) {
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* INTERFACE 0 IS THE VIDEO INTERFACE
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
case 0: {
|
|
if (!peasycap) {
|
|
SAY("MISTAKE: peasycap is NULL\n");
|
|
return -EFAULT;
|
|
}
|
|
if (!isokalt) {
|
|
SAY("ERROR: no viable video_altsetting_on\n");
|
|
return -ENOENT;
|
|
} else {
|
|
peasycap->video_altsetting_on = okalt[isokalt - 1];
|
|
JOT(4, "%i=video_altsetting_on <====\n", \
|
|
peasycap->video_altsetting_on);
|
|
}
|
|
if (!isokepn) {
|
|
SAY("ERROR: no viable video_endpointnumber\n");
|
|
return -ENOENT;
|
|
} else {
|
|
peasycap->video_endpointnumber = okepn[isokepn - 1];
|
|
JOT(4, "%i=video_endpointnumber\n", \
|
|
peasycap->video_endpointnumber);
|
|
}
|
|
if (!isokmps) {
|
|
SAY("ERROR: no viable video_maxpacketsize\n");
|
|
return -ENOENT;
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* DECIDE THE VIDEO STREAMING PARAMETERS
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
} else {
|
|
maxpacketsize = okmps[isokmps - 1] - 1024;
|
|
if (USB_2_0_MAXPACKETSIZE > maxpacketsize) {
|
|
peasycap->video_isoc_maxframesize = maxpacketsize;
|
|
} else {
|
|
peasycap->video_isoc_maxframesize = \
|
|
USB_2_0_MAXPACKETSIZE;
|
|
}
|
|
JOT(4, "%i=video_isoc_maxframesize\n", \
|
|
peasycap->video_isoc_maxframesize);
|
|
if (0 >= peasycap->video_isoc_maxframesize) {
|
|
SAY("ERROR: bad video_isoc_maxframesize\n");
|
|
return -ENOENT;
|
|
}
|
|
peasycap->video_isoc_framesperdesc = VIDEO_ISOC_FRAMESPERDESC;
|
|
JOT(4, "%i=video_isoc_framesperdesc\n", \
|
|
peasycap->video_isoc_framesperdesc);
|
|
if (0 >= peasycap->video_isoc_framesperdesc) {
|
|
SAY("ERROR: bad video_isoc_framesperdesc\n");
|
|
return -ENOENT;
|
|
}
|
|
peasycap->video_isoc_buffer_size = \
|
|
peasycap->video_isoc_maxframesize * \
|
|
peasycap->video_isoc_framesperdesc;
|
|
JOT(4, "%i=video_isoc_buffer_size\n", \
|
|
peasycap->video_isoc_buffer_size);
|
|
if ((PAGE_SIZE << VIDEO_ISOC_ORDER) < \
|
|
peasycap->video_isoc_buffer_size) {
|
|
SAY("MISTAKE: " \
|
|
"peasycap->video_isoc_buffer_size too big\n");
|
|
return -EFAULT;
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
if (-1 == peasycap->video_interface) {
|
|
SAY("MISTAKE: video_interface is unset\n");
|
|
return -EFAULT;
|
|
}
|
|
if (-1 == peasycap->video_altsetting_on) {
|
|
SAY("MISTAKE: video_altsetting_on is unset\n");
|
|
return -EFAULT;
|
|
}
|
|
if (-1 == peasycap->video_altsetting_off) {
|
|
SAY("MISTAKE: video_interface_off is unset\n");
|
|
return -EFAULT;
|
|
}
|
|
if (-1 == peasycap->video_endpointnumber) {
|
|
SAY("MISTAKE: video_endpointnumber is unset\n");
|
|
return -EFAULT;
|
|
}
|
|
if (-1 == peasycap->video_isoc_maxframesize) {
|
|
SAY("MISTAKE: video_isoc_maxframesize is unset\n");
|
|
return -EFAULT;
|
|
}
|
|
if (-1 == peasycap->video_isoc_buffer_size) {
|
|
SAY("MISTAKE: video_isoc_buffer_size is unset\n");
|
|
return -EFAULT;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* ALLOCATE MEMORY FOR VIDEO BUFFERS. LISTS MUST BE INITIALIZED FIRST.
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
INIT_LIST_HEAD(&(peasycap->urb_video_head));
|
|
peasycap->purb_video_head = &(peasycap->urb_video_head);
|
|
/*---------------------------------------------------------------------------*/
|
|
JOT(4, "allocating %i frame buffers of size %li\n", \
|
|
FRAME_BUFFER_MANY, (long int)FRAME_BUFFER_SIZE);
|
|
JOT(4, ".... each scattered over %li pages\n", \
|
|
FRAME_BUFFER_SIZE/PAGE_SIZE);
|
|
|
|
for (k = 0; k < FRAME_BUFFER_MANY; k++) {
|
|
for (m = 0; m < FRAME_BUFFER_SIZE/PAGE_SIZE; m++) {
|
|
if ((void *)NULL != peasycap->frame_buffer[k][m].pgo)
|
|
SAY("attempting to reallocate frame " \
|
|
" buffers\n");
|
|
else {
|
|
pbuf = (void *)__get_free_page(GFP_KERNEL);
|
|
if ((void *)NULL == pbuf) {
|
|
SAY("ERROR: Could not allocate frame "\
|
|
"buffer %i page %i\n", k, m);
|
|
return -ENOMEM;
|
|
} else
|
|
peasycap->allocation_video_page += 1;
|
|
peasycap->frame_buffer[k][m].pgo = pbuf;
|
|
}
|
|
peasycap->frame_buffer[k][m].pto = \
|
|
peasycap->frame_buffer[k][m].pgo;
|
|
}
|
|
}
|
|
|
|
peasycap->frame_fill = 0;
|
|
peasycap->frame_read = 0;
|
|
JOT(4, "allocation of frame buffers done: %i pages\n", k * \
|
|
m);
|
|
/*---------------------------------------------------------------------------*/
|
|
JOT(4, "allocating %i field buffers of size %li\n", \
|
|
FIELD_BUFFER_MANY, (long int)FIELD_BUFFER_SIZE);
|
|
JOT(4, ".... each scattered over %li pages\n", \
|
|
FIELD_BUFFER_SIZE/PAGE_SIZE);
|
|
|
|
for (k = 0; k < FIELD_BUFFER_MANY; k++) {
|
|
for (m = 0; m < FIELD_BUFFER_SIZE/PAGE_SIZE; m++) {
|
|
if ((void *)NULL != peasycap->field_buffer[k][m].pgo) {
|
|
SAY("ERROR: attempting to reallocate " \
|
|
"field buffers\n");
|
|
} else {
|
|
pbuf = (void *) __get_free_page(GFP_KERNEL);
|
|
if ((void *)NULL == pbuf) {
|
|
SAY("ERROR: Could not allocate field" \
|
|
" buffer %i page %i\n", k, m);
|
|
return -ENOMEM;
|
|
}
|
|
else
|
|
peasycap->allocation_video_page += 1;
|
|
peasycap->field_buffer[k][m].pgo = pbuf;
|
|
}
|
|
peasycap->field_buffer[k][m].pto = \
|
|
peasycap->field_buffer[k][m].pgo;
|
|
}
|
|
peasycap->field_buffer[k][0].kount = 0x0200;
|
|
}
|
|
peasycap->field_fill = 0;
|
|
peasycap->field_page = 0;
|
|
peasycap->field_read = 0;
|
|
JOT(4, "allocation of field buffers done: %i pages\n", k * \
|
|
m);
|
|
/*---------------------------------------------------------------------------*/
|
|
JOT(4, "allocating %i isoc video buffers of size %i\n", \
|
|
VIDEO_ISOC_BUFFER_MANY, \
|
|
peasycap->video_isoc_buffer_size);
|
|
JOT(4, ".... each occupying contiguous memory pages\n");
|
|
|
|
for (k = 0; k < VIDEO_ISOC_BUFFER_MANY; k++) {
|
|
pbuf = (void *)__get_free_pages(GFP_KERNEL, VIDEO_ISOC_ORDER);
|
|
if (NULL == pbuf) {
|
|
SAY("ERROR: Could not allocate isoc video buffer " \
|
|
"%i\n", k);
|
|
return -ENOMEM;
|
|
} else
|
|
peasycap->allocation_video_page += \
|
|
((unsigned int)(0x01 << VIDEO_ISOC_ORDER));
|
|
|
|
peasycap->video_isoc_buffer[k].pgo = pbuf;
|
|
peasycap->video_isoc_buffer[k].pto = pbuf + \
|
|
peasycap->video_isoc_buffer_size;
|
|
peasycap->video_isoc_buffer[k].kount = k;
|
|
}
|
|
JOT(4, "allocation of isoc video buffers done: %i pages\n", \
|
|
k * (0x01 << VIDEO_ISOC_ORDER));
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* ALLOCATE AND INITIALIZE MULTIPLE struct urb ...
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
JOT(4, "allocating %i struct urb.\n", VIDEO_ISOC_BUFFER_MANY);
|
|
JOT(4, "using %i=peasycap->video_isoc_framesperdesc\n", \
|
|
peasycap->video_isoc_framesperdesc);
|
|
JOT(4, "using %i=peasycap->video_isoc_maxframesize\n", \
|
|
peasycap->video_isoc_maxframesize);
|
|
JOT(4, "using %i=peasycap->video_isoc_buffer_sizen", \
|
|
peasycap->video_isoc_buffer_size);
|
|
|
|
for (k = 0; k < VIDEO_ISOC_BUFFER_MANY; k++) {
|
|
purb = usb_alloc_urb(peasycap->video_isoc_framesperdesc, \
|
|
GFP_KERNEL);
|
|
if (NULL == purb) {
|
|
SAY("ERROR: usb_alloc_urb returned NULL for buffer " \
|
|
"%i\n", k);
|
|
return -ENOMEM;
|
|
} else
|
|
peasycap->allocation_video_urb += 1;
|
|
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
|
|
pdata_urb = kzalloc(sizeof(struct data_urb), GFP_KERNEL);
|
|
if (NULL == pdata_urb) {
|
|
SAY("ERROR: Could not allocate struct data_urb.\n");
|
|
return -ENOMEM;
|
|
} else
|
|
peasycap->allocation_video_struct += \
|
|
sizeof(struct data_urb);
|
|
|
|
pdata_urb->purb = purb;
|
|
pdata_urb->isbuf = k;
|
|
pdata_urb->length = 0;
|
|
list_add_tail(&(pdata_urb->list_head), \
|
|
peasycap->purb_video_head);
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* ... AND INITIALIZE THEM
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
if (!k) {
|
|
JOT(4, "initializing video urbs thus:\n");
|
|
JOT(4, " purb->interval = 1;\n");
|
|
JOT(4, " purb->dev = peasycap->pusb_device;\n");
|
|
JOT(4, " purb->pipe = usb_rcvisocpipe" \
|
|
"(peasycap->pusb_device,%i);\n", \
|
|
peasycap->video_endpointnumber);
|
|
JOT(4, " purb->transfer_flags = URB_ISO_ASAP;\n");
|
|
JOT(4, " purb->transfer_buffer = peasycap->" \
|
|
"video_isoc_buffer[.].pgo;\n");
|
|
JOT(4, " purb->transfer_buffer_length = %i;\n", \
|
|
peasycap->video_isoc_buffer_size);
|
|
JOT(4, " purb->complete = easycap_complete;\n");
|
|
JOT(4, " purb->context = peasycap;\n");
|
|
JOT(4, " purb->start_frame = 0;\n");
|
|
JOT(4, " purb->number_of_packets = %i;\n", \
|
|
peasycap->video_isoc_framesperdesc);
|
|
JOT(4, " for (j = 0; j < %i; j++)\n", \
|
|
peasycap->video_isoc_framesperdesc);
|
|
JOT(4, " {\n");
|
|
JOT(4, " purb->iso_frame_desc[j].offset = j*%i;\n",\
|
|
peasycap->video_isoc_maxframesize);
|
|
JOT(4, " purb->iso_frame_desc[j].length = %i;\n", \
|
|
peasycap->video_isoc_maxframesize);
|
|
JOT(4, " }\n");
|
|
}
|
|
|
|
purb->interval = 1;
|
|
purb->dev = peasycap->pusb_device;
|
|
purb->pipe = usb_rcvisocpipe(peasycap->pusb_device, \
|
|
peasycap->video_endpointnumber);
|
|
purb->transfer_flags = URB_ISO_ASAP;
|
|
purb->transfer_buffer = peasycap->video_isoc_buffer[k].pgo;
|
|
purb->transfer_buffer_length = \
|
|
peasycap->video_isoc_buffer_size;
|
|
purb->complete = easycap_complete;
|
|
purb->context = peasycap;
|
|
purb->start_frame = 0;
|
|
purb->number_of_packets = peasycap->video_isoc_framesperdesc;
|
|
for (j = 0; j < peasycap->video_isoc_framesperdesc; j++) {
|
|
purb->iso_frame_desc[j].offset = j * \
|
|
peasycap->video_isoc_maxframesize;
|
|
purb->iso_frame_desc[j].length = \
|
|
peasycap->video_isoc_maxframesize;
|
|
}
|
|
}
|
|
JOT(4, "allocation of %i struct urb done.\n", k);
|
|
/*--------------------------------------------------------------------------*/
|
|
/*
|
|
* SAVE POINTER peasycap IN THIS INTERFACE.
|
|
*/
|
|
/*--------------------------------------------------------------------------*/
|
|
usb_set_intfdata(pusb_interface, peasycap);
|
|
/*--------------------------------------------------------------------------*/
|
|
/*
|
|
* THE VIDEO DEVICE CAN BE REGISTERED NOW, AS IT IS READY.
|
|
*/
|
|
/*--------------------------------------------------------------------------*/
|
|
#if (!defined(EASYCAP_IS_VIDEODEV_CLIENT))
|
|
if (0 != (usb_register_dev(pusb_interface, &easycap_class))) {
|
|
err("Not able to get a minor for this device");
|
|
usb_set_intfdata(pusb_interface, NULL);
|
|
return -ENODEV;
|
|
} else
|
|
(peasycap->registered_video)++;
|
|
SAY("easycap attached to minor #%d\n", pusb_interface->minor);
|
|
break;
|
|
/*vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv*/
|
|
#else
|
|
pvideo_device = (struct video_device *)\
|
|
kzalloc(sizeof(struct video_device), GFP_KERNEL);
|
|
if ((struct video_device *)NULL == pvideo_device) {
|
|
SAY("ERROR: Could not allocate structure video_device\n");
|
|
return -ENOMEM;
|
|
}
|
|
if (VIDEO_DEVICE_MANY <= video_device_many) {
|
|
SAY("ERROR: Too many /dev/videos\n");
|
|
return -ENOMEM;
|
|
}
|
|
pvideo_array[video_device_many] = pvideo_device; video_device_many++;
|
|
|
|
strcpy(&pvideo_device->name[0], "easycapdc60");
|
|
#if defined(EASYCAP_NEEDS_V4L2_FOPS)
|
|
pvideo_device->fops = &v4l2_fops;
|
|
#else
|
|
pvideo_device->fops = &easycap_fops;
|
|
#endif /*EASYCAP_NEEDS_V4L2_FOPS*/
|
|
pvideo_device->minor = -1;
|
|
pvideo_device->release = (void *)(&videodev_release);
|
|
|
|
video_set_drvdata(pvideo_device, (void *)peasycap);
|
|
|
|
rc = video_register_device(pvideo_device, VFL_TYPE_GRABBER, -1);
|
|
if (0 != rc) {
|
|
err("Not able to register with videodev");
|
|
videodev_release(pvideo_device);
|
|
return -ENODEV;
|
|
} else {
|
|
peasycap->pvideo_device = pvideo_device;
|
|
(peasycap->registered_video)++;
|
|
JOT(4, "registered with videodev: %i=minor\n", \
|
|
pvideo_device->minor);
|
|
}
|
|
/*^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^*/
|
|
#endif /*EASYCAP_IS_VIDEODEV_CLIENT*/
|
|
break;
|
|
}
|
|
/*--------------------------------------------------------------------------*/
|
|
/*
|
|
* INTERFACE 1 IS THE AUDIO CONTROL INTERFACE
|
|
* INTERFACE 2 IS THE AUDIO STREAMING INTERFACE
|
|
*/
|
|
/*--------------------------------------------------------------------------*/
|
|
case 1: {
|
|
/*--------------------------------------------------------------------------*/
|
|
/*
|
|
* SAVE POINTER peasycap IN INTERFACE 1
|
|
*/
|
|
/*--------------------------------------------------------------------------*/
|
|
usb_set_intfdata(pusb_interface, peasycap);
|
|
JOT(4, "no initialization required for interface %i\n", \
|
|
pusb_interface_descriptor->bInterfaceNumber);
|
|
break;
|
|
}
|
|
/*--------------------------------------------------------------------------*/
|
|
case 2: {
|
|
if (!peasycap) {
|
|
SAY("MISTAKE: peasycap is NULL\n");
|
|
return -EFAULT;
|
|
}
|
|
if (!isokalt) {
|
|
SAY("ERROR: no viable audio_altsetting_on\n");
|
|
return -ENOENT;
|
|
} else {
|
|
peasycap->audio_altsetting_on = okalt[isokalt - 1];
|
|
JOT(4, "%i=audio_altsetting_on <====\n", \
|
|
peasycap->audio_altsetting_on);
|
|
}
|
|
if (!isokepn) {
|
|
SAY("ERROR: no viable audio_endpointnumber\n");
|
|
return -ENOENT;
|
|
} else {
|
|
peasycap->audio_endpointnumber = okepn[isokepn - 1];
|
|
JOT(4, "%i=audio_endpointnumber\n", \
|
|
peasycap->audio_endpointnumber);
|
|
}
|
|
if (!isokmps) {
|
|
SAY("ERROR: no viable audio_maxpacketsize\n");
|
|
return -ENOENT;
|
|
} else {
|
|
peasycap->audio_isoc_maxframesize = okmps[isokmps - 1];
|
|
JOT(4, "%i=audio_isoc_maxframesize\n", \
|
|
peasycap->audio_isoc_maxframesize);
|
|
if (0 >= peasycap->audio_isoc_maxframesize) {
|
|
SAY("ERROR: bad audio_isoc_maxframesize\n");
|
|
return -ENOENT;
|
|
}
|
|
if (9 == peasycap->audio_isoc_maxframesize) {
|
|
peasycap->ilk |= 0x02;
|
|
SAY("hardware is FOUR-CVBS\n");
|
|
peasycap->microphone = true;
|
|
peasycap->audio_pages_per_fragment = 4;
|
|
} else if (256 == peasycap->audio_isoc_maxframesize) {
|
|
peasycap->ilk &= ~0x02;
|
|
SAY("hardware is CVBS+S-VIDEO\n");
|
|
peasycap->microphone = false;
|
|
peasycap->audio_pages_per_fragment = 4;
|
|
} else {
|
|
SAY("hardware is unidentified:\n");
|
|
SAY("%i=audio_isoc_maxframesize\n", \
|
|
peasycap->audio_isoc_maxframesize);
|
|
return -ENOENT;
|
|
}
|
|
|
|
peasycap->audio_bytes_per_fragment = \
|
|
peasycap->audio_pages_per_fragment * \
|
|
PAGE_SIZE ;
|
|
peasycap->audio_buffer_page_many = (AUDIO_FRAGMENT_MANY * \
|
|
peasycap->audio_pages_per_fragment);
|
|
|
|
JOT(4, "%6i=AUDIO_FRAGMENT_MANY\n", AUDIO_FRAGMENT_MANY);
|
|
JOT(4, "%6i=audio_pages_per_fragment\n", \
|
|
peasycap->audio_pages_per_fragment);
|
|
JOT(4, "%6i=audio_bytes_per_fragment\n", \
|
|
peasycap->audio_bytes_per_fragment);
|
|
JOT(4, "%6i=audio_buffer_page_many\n", \
|
|
peasycap->audio_buffer_page_many);
|
|
|
|
peasycap->audio_isoc_framesperdesc = 128;
|
|
|
|
JOT(4, "%i=audio_isoc_framesperdesc\n", \
|
|
peasycap->audio_isoc_framesperdesc);
|
|
if (0 >= peasycap->audio_isoc_framesperdesc) {
|
|
SAY("ERROR: bad audio_isoc_framesperdesc\n");
|
|
return -ENOENT;
|
|
}
|
|
|
|
peasycap->audio_isoc_buffer_size = \
|
|
peasycap->audio_isoc_maxframesize * \
|
|
peasycap->audio_isoc_framesperdesc;
|
|
JOT(4, "%i=audio_isoc_buffer_size\n", \
|
|
peasycap->audio_isoc_buffer_size);
|
|
if (AUDIO_ISOC_BUFFER_SIZE < \
|
|
peasycap->audio_isoc_buffer_size) {
|
|
SAY("MISTAKE: audio_isoc_buffer_size bigger "
|
|
"than %li=AUDIO_ISOC_BUFFER_SIZE\n", \
|
|
AUDIO_ISOC_BUFFER_SIZE);
|
|
return -EFAULT;
|
|
}
|
|
}
|
|
|
|
if (-1 == peasycap->audio_interface) {
|
|
SAY("MISTAKE: audio_interface is unset\n");
|
|
return -EFAULT;
|
|
}
|
|
if (-1 == peasycap->audio_altsetting_on) {
|
|
SAY("MISTAKE: audio_altsetting_on is unset\n");
|
|
return -EFAULT;
|
|
}
|
|
if (-1 == peasycap->audio_altsetting_off) {
|
|
SAY("MISTAKE: audio_interface_off is unset\n");
|
|
return -EFAULT;
|
|
}
|
|
if (-1 == peasycap->audio_endpointnumber) {
|
|
SAY("MISTAKE: audio_endpointnumber is unset\n");
|
|
return -EFAULT;
|
|
}
|
|
if (-1 == peasycap->audio_isoc_maxframesize) {
|
|
SAY("MISTAKE: audio_isoc_maxframesize is unset\n");
|
|
return -EFAULT;
|
|
}
|
|
if (-1 == peasycap->audio_isoc_buffer_size) {
|
|
SAY("MISTAKE: audio_isoc_buffer_size is unset\n");
|
|
return -EFAULT;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* ALLOCATE MEMORY FOR AUDIO BUFFERS. LISTS MUST BE INITIALIZED FIRST.
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
INIT_LIST_HEAD(&(peasycap->urb_audio_head));
|
|
peasycap->purb_audio_head = &(peasycap->urb_audio_head);
|
|
|
|
JOT(4, "allocating an audio buffer\n");
|
|
JOT(4, ".... scattered over %i pages\n", \
|
|
peasycap->audio_buffer_page_many);
|
|
|
|
for (k = 0; k < peasycap->audio_buffer_page_many; k++) {
|
|
if ((void *)NULL != peasycap->audio_buffer[k].pgo) {
|
|
SAY("ERROR: attempting to reallocate audio buffers\n");
|
|
} else {
|
|
pbuf = (void *) __get_free_page(GFP_KERNEL);
|
|
if ((void *)NULL == pbuf) {
|
|
SAY("ERROR: Could not allocate audio " \
|
|
"buffer page %i\n", k);
|
|
return -ENOMEM;
|
|
} else
|
|
peasycap->allocation_audio_page += 1;
|
|
|
|
peasycap->audio_buffer[k].pgo = pbuf;
|
|
}
|
|
peasycap->audio_buffer[k].pto = peasycap->audio_buffer[k].pgo;
|
|
}
|
|
|
|
peasycap->audio_fill = 0;
|
|
peasycap->audio_read = 0;
|
|
JOT(4, "allocation of audio buffer done: %i pages\n", k);
|
|
/*---------------------------------------------------------------------------*/
|
|
JOT(4, "allocating %i isoc audio buffers of size %i\n", \
|
|
AUDIO_ISOC_BUFFER_MANY, peasycap->audio_isoc_buffer_size);
|
|
JOT(4, ".... each occupying contiguous memory pages\n");
|
|
|
|
for (k = 0; k < AUDIO_ISOC_BUFFER_MANY; k++) {
|
|
pbuf = (void *)__get_free_pages(GFP_KERNEL, AUDIO_ISOC_ORDER);
|
|
if (NULL == pbuf) {
|
|
SAY("ERROR: Could not allocate isoc audio buffer " \
|
|
"%i\n", k);
|
|
return -ENOMEM;
|
|
} else
|
|
peasycap->allocation_audio_page += \
|
|
((unsigned int)(0x01 << AUDIO_ISOC_ORDER));
|
|
|
|
peasycap->audio_isoc_buffer[k].pgo = pbuf;
|
|
peasycap->audio_isoc_buffer[k].pto = pbuf + \
|
|
peasycap->audio_isoc_buffer_size;
|
|
peasycap->audio_isoc_buffer[k].kount = k;
|
|
}
|
|
JOT(4, "allocation of isoc audio buffers done.\n");
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* ALLOCATE AND INITIALIZE MULTIPLE struct urb ...
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
JOT(4, "allocating %i struct urb.\n", AUDIO_ISOC_BUFFER_MANY);
|
|
JOT(4, "using %i=peasycap->audio_isoc_framesperdesc\n", \
|
|
peasycap->audio_isoc_framesperdesc);
|
|
JOT(4, "using %i=peasycap->audio_isoc_maxframesize\n", \
|
|
peasycap->audio_isoc_maxframesize);
|
|
JOT(4, "using %i=peasycap->audio_isoc_buffer_size\n", \
|
|
peasycap->audio_isoc_buffer_size);
|
|
|
|
for (k = 0; k < AUDIO_ISOC_BUFFER_MANY; k++) {
|
|
purb = usb_alloc_urb(peasycap->audio_isoc_framesperdesc, \
|
|
GFP_KERNEL);
|
|
if (NULL == purb) {
|
|
SAY("ERROR: usb_alloc_urb returned NULL for buffer " \
|
|
"%i\n", k);
|
|
return -ENOMEM;
|
|
} else
|
|
peasycap->allocation_audio_urb += 1 ;
|
|
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
|
|
pdata_urb = kzalloc(sizeof(struct data_urb), GFP_KERNEL);
|
|
if (NULL == pdata_urb) {
|
|
SAY("ERROR: Could not allocate struct data_urb.\n");
|
|
return -ENOMEM;
|
|
} else
|
|
peasycap->allocation_audio_struct += \
|
|
sizeof(struct data_urb);
|
|
|
|
pdata_urb->purb = purb;
|
|
pdata_urb->isbuf = k;
|
|
pdata_urb->length = 0;
|
|
list_add_tail(&(pdata_urb->list_head), \
|
|
peasycap->purb_audio_head);
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* ... AND INITIALIZE THEM
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
if (!k) {
|
|
JOT(4, "initializing audio urbs thus:\n");
|
|
JOT(4, " purb->interval = 1;\n");
|
|
JOT(4, " purb->dev = peasycap->pusb_device;\n");
|
|
JOT(4, " purb->pipe = usb_rcvisocpipe(peasycap->" \
|
|
"pusb_device,%i);\n", \
|
|
peasycap->audio_endpointnumber);
|
|
JOT(4, " purb->transfer_flags = URB_ISO_ASAP;\n");
|
|
JOT(4, " purb->transfer_buffer = " \
|
|
"peasycap->audio_isoc_buffer[.].pgo;\n");
|
|
JOT(4, " purb->transfer_buffer_length = %i;\n", \
|
|
peasycap->audio_isoc_buffer_size);
|
|
JOT(4, " purb->complete = easysnd_complete;\n");
|
|
JOT(4, " purb->context = peasycap;\n");
|
|
JOT(4, " purb->start_frame = 0;\n");
|
|
JOT(4, " purb->number_of_packets = %i;\n", \
|
|
peasycap->audio_isoc_framesperdesc);
|
|
JOT(4, " for (j = 0; j < %i; j++)\n", \
|
|
peasycap->audio_isoc_framesperdesc);
|
|
JOT(4, " {\n");
|
|
JOT(4, " purb->iso_frame_desc[j].offset = j*%i;\n",\
|
|
peasycap->audio_isoc_maxframesize);
|
|
JOT(4, " purb->iso_frame_desc[j].length = %i;\n", \
|
|
peasycap->audio_isoc_maxframesize);
|
|
JOT(4, " }\n");
|
|
}
|
|
|
|
purb->interval = 1;
|
|
purb->dev = peasycap->pusb_device;
|
|
purb->pipe = usb_rcvisocpipe(peasycap->pusb_device, \
|
|
peasycap->audio_endpointnumber);
|
|
purb->transfer_flags = URB_ISO_ASAP;
|
|
purb->transfer_buffer = peasycap->audio_isoc_buffer[k].pgo;
|
|
purb->transfer_buffer_length = \
|
|
peasycap->audio_isoc_buffer_size;
|
|
purb->complete = easysnd_complete;
|
|
purb->context = peasycap;
|
|
purb->start_frame = 0;
|
|
purb->number_of_packets = peasycap->audio_isoc_framesperdesc;
|
|
for (j = 0; j < peasycap->audio_isoc_framesperdesc; j++) {
|
|
purb->iso_frame_desc[j].offset = j * \
|
|
peasycap->audio_isoc_maxframesize;
|
|
purb->iso_frame_desc[j].length = \
|
|
peasycap->audio_isoc_maxframesize;
|
|
}
|
|
}
|
|
JOT(4, "allocation of %i struct urb done.\n", k);
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* SAVE POINTER peasycap IN THIS INTERFACE.
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
usb_set_intfdata(pusb_interface, peasycap);
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* THE AUDIO DEVICE CAN BE REGISTERED NOW, AS IT IS READY.
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
rc = usb_register_dev(pusb_interface, &easysnd_class);
|
|
if (0 != rc) {
|
|
err("Not able to get a minor for this device.");
|
|
usb_set_intfdata(pusb_interface, NULL);
|
|
return -ENODEV;
|
|
} else
|
|
(peasycap->registered_audio)++;
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* LET THE USER KNOW WHAT NODE THE AUDIO DEVICE IS ATTACHED TO.
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
SAY("easysnd attached to minor #%d\n", pusb_interface->minor);
|
|
break;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* INTERFACES OTHER THAN 0, 1 AND 2 ARE UNEXPECTED
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
default: {
|
|
JOT(4, "ERROR: unexpected interface %i\n", bInterfaceNumber);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
JOT(4, "ends successfully for interface %i\n", \
|
|
pusb_interface_descriptor->bInterfaceNumber);
|
|
return 0;
|
|
}
|
|
/*****************************************************************************/
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* WHEN THIS FUNCTION IS CALLED THE DEVICE HAS ALREADY BEEN PHYSICALLY
|
|
* UNPLUGGED.
|
|
* HENCE peasycap->pusb_device IS NO LONGER VALID AND MUST BE SET TO NULL.
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
easycap_usb_disconnect(struct usb_interface *pusb_interface)
|
|
{
|
|
struct usb_host_interface *pusb_host_interface;
|
|
struct usb_interface_descriptor *pusb_interface_descriptor;
|
|
__u8 bInterfaceNumber;
|
|
struct easycap *peasycap;
|
|
|
|
struct list_head *plist_head;
|
|
struct data_urb *pdata_urb;
|
|
int minor, m;
|
|
|
|
JOT(4, "\n");
|
|
|
|
if ((struct usb_interface *)NULL == pusb_interface) {
|
|
JOT(4, "ERROR: pusb_interface is NULL\n");
|
|
return;
|
|
}
|
|
pusb_host_interface = pusb_interface->cur_altsetting;
|
|
if ((struct usb_host_interface *)NULL == pusb_host_interface) {
|
|
JOT(4, "ERROR: pusb_host_interface is NULL\n");
|
|
return;
|
|
}
|
|
pusb_interface_descriptor = &(pusb_host_interface->desc);
|
|
if ((struct usb_interface_descriptor *)NULL == pusb_interface_descriptor) {
|
|
JOT(4, "ERROR: pusb_interface_descriptor is NULL\n");
|
|
return;
|
|
}
|
|
bInterfaceNumber = pusb_interface_descriptor->bInterfaceNumber;
|
|
minor = pusb_interface->minor;
|
|
JOT(4, "intf[%i]: minor=%i\n", bInterfaceNumber, minor);
|
|
|
|
peasycap = usb_get_intfdata(pusb_interface);
|
|
if ((struct easycap *)NULL == peasycap)
|
|
SAY("ERROR: peasycap is NULL\n");
|
|
else {
|
|
peasycap->pusb_device = (struct usb_device *)NULL;
|
|
switch (bInterfaceNumber) {
|
|
/*---------------------------------------------------------------------------*/
|
|
case 0: {
|
|
if ((struct list_head *)NULL != peasycap->purb_video_head) {
|
|
JOT(4, "killing video urbs\n");
|
|
m = 0;
|
|
list_for_each(plist_head, (peasycap->purb_video_head))
|
|
{
|
|
pdata_urb = list_entry(plist_head, \
|
|
struct data_urb, list_head);
|
|
if ((struct data_urb *)NULL != pdata_urb) {
|
|
if ((struct urb *)NULL != \
|
|
pdata_urb->purb) {
|
|
usb_kill_urb(pdata_urb->purb);
|
|
m++;
|
|
}
|
|
}
|
|
}
|
|
JOT(4, "%i video urbs killed\n", m);
|
|
} else
|
|
SAY("ERROR: peasycap->purb_video_head is NULL\n");
|
|
break;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
case 2: {
|
|
if ((struct list_head *)NULL != peasycap->purb_audio_head) {
|
|
JOT(4, "killing audio urbs\n");
|
|
m = 0;
|
|
list_for_each(plist_head, \
|
|
(peasycap->purb_audio_head)) {
|
|
pdata_urb = list_entry(plist_head, \
|
|
struct data_urb, list_head);
|
|
if ((struct data_urb *)NULL != pdata_urb) {
|
|
if ((struct urb *)NULL != \
|
|
pdata_urb->purb) {
|
|
usb_kill_urb(pdata_urb->purb);
|
|
m++;
|
|
}
|
|
}
|
|
}
|
|
JOT(4, "%i audio urbs killed\n", m);
|
|
} else
|
|
SAY("ERROR: peasycap->purb_audio_head is NULL\n");
|
|
break;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
/*--------------------------------------------------------------------------*/
|
|
/*
|
|
* DEREGISTER
|
|
*/
|
|
/*--------------------------------------------------------------------------*/
|
|
switch (bInterfaceNumber) {
|
|
case 0: {
|
|
#if (!defined(EASYCAP_IS_VIDEODEV_CLIENT))
|
|
if ((struct easycap *)NULL == peasycap) {
|
|
SAY("ERROR: peasycap has become NULL\n");
|
|
} else {
|
|
lock_kernel();
|
|
usb_deregister_dev(pusb_interface, &easycap_class);
|
|
(peasycap->registered_video)--;
|
|
|
|
JOT(4, "intf[%i]: usb_deregister_dev()\n", bInterfaceNumber);
|
|
unlock_kernel();
|
|
SAY("easycap detached from minor #%d\n", minor);
|
|
}
|
|
/*vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv*/
|
|
#else
|
|
if ((struct easycap *)NULL == peasycap)
|
|
SAY("ERROR: peasycap has become NULL\n");
|
|
else {
|
|
lock_kernel();
|
|
video_unregister_device(peasycap->pvideo_device);
|
|
(peasycap->registered_video)--;
|
|
unlock_kernel();
|
|
JOT(4, "unregistered with videodev: %i=minor\n", \
|
|
pvideo_device->minor);
|
|
}
|
|
/*^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^*/
|
|
#endif /*EASYCAP_IS_VIDEODEV_CLIENT*/
|
|
break;
|
|
}
|
|
case 2: {
|
|
lock_kernel();
|
|
|
|
usb_deregister_dev(pusb_interface, &easysnd_class);
|
|
if ((struct easycap *)NULL != peasycap)
|
|
(peasycap->registered_audio)--;
|
|
|
|
JOT(4, "intf[%i]: usb_deregister_dev()\n", bInterfaceNumber);
|
|
unlock_kernel();
|
|
|
|
SAY("easysnd detached from minor #%d\n", minor);
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* CALL easycap_delete() IF NO REMAINING REFERENCES TO peasycap
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
if ((struct easycap *)NULL == peasycap) {
|
|
SAY("ERROR: peasycap has become NULL\n");
|
|
SAY("cannot call kref_put()\n");
|
|
SAY("ending unsuccessfully: may cause memory leak\n");
|
|
return;
|
|
}
|
|
if (!peasycap->kref.refcount.counter) {
|
|
SAY("ERROR: peasycap->kref.refcount.counter is zero " \
|
|
"so cannot call kref_put()\n");
|
|
SAY("ending unsuccessfully: may cause memory leak\n");
|
|
return;
|
|
}
|
|
JOT(4, "intf[%i]: kref_put() with %i=peasycap->kref.refcount.counter\n", \
|
|
bInterfaceNumber, (int)peasycap->kref.refcount.counter);
|
|
kref_put(&peasycap->kref, easycap_delete);
|
|
JOT(4, "intf[%i]: kref_put() done.\n", bInterfaceNumber);
|
|
/*---------------------------------------------------------------------------*/
|
|
|
|
JOT(4, "ends\n");
|
|
return;
|
|
}
|
|
/*****************************************************************************/
|
|
int __init
|
|
easycap_module_init(void)
|
|
{
|
|
int result;
|
|
|
|
SAY("========easycap=======\n");
|
|
JOT(4, "begins. %i=debug\n", easycap_debug);
|
|
SAY("version: " EASYCAP_DRIVER_VERSION "\n");
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* REGISTER THIS DRIVER WITH THE USB SUBSYTEM.
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
JOT(4, "registering driver easycap\n");
|
|
|
|
result = usb_register(&easycap_usb_driver);
|
|
if (0 != result)
|
|
SAY("ERROR: usb_register returned %i\n", result);
|
|
|
|
JOT(4, "ends\n");
|
|
return result;
|
|
}
|
|
/*****************************************************************************/
|
|
void __exit
|
|
easycap_module_exit(void)
|
|
{
|
|
JOT(4, "begins\n");
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* DEREGISTER THIS DRIVER WITH THE USB SUBSYTEM.
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
usb_deregister(&easycap_usb_driver);
|
|
|
|
JOT(4, "ends\n");
|
|
}
|
|
/*****************************************************************************/
|
|
|
|
module_init(easycap_module_init);
|
|
module_exit(easycap_module_exit);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("R.M. Thomas <rmthomas@sciolus.org>");
|
|
MODULE_DESCRIPTION(EASYCAP_DRIVER_DESCRIPTION);
|
|
MODULE_VERSION(EASYCAP_DRIVER_VERSION);
|
|
#if defined(EASYCAP_DEBUG)
|
|
MODULE_PARM_DESC(easycap_debug, "debug: 0 (default), 1, 2,...");
|
|
#endif /*EASYCAP_DEBUG*/
|
|
/*****************************************************************************/
|