qt5-qtwebengine/qtwebengine-opensource-src-5.9.0-openmax-dl-neon.patch
2019-12-09 21:51:23 +01:00

98 lines
3.2 KiB
Diff

diff --git a/src/3rdparty/chromium/third_party/openmax_dl/dl/BUILD.gn b/src/3rdparty/chromium/third_party/openmax_dl/dl/BUILD.gn
index 96a59c7c7..d5470f284 100644
--- a/src/3rdparty/chromium/third_party/openmax_dl/dl/BUILD.gn
+++ b/src/3rdparty/chromium/third_party/openmax_dl/dl/BUILD.gn
@@ -208,12 +208,6 @@ if (current_cpu == "arm") {
]
if (arm_optionally_use_neon) {
# Run-time NEON detection.
- deps = [
- "//third_party/android_tools:cpu_features",
- ]
-
- # To get the __android_log_print routine
- libs = [ "log" ]
# Detection routine
sources += [ "sp/src/arm/detect.c" ]
diff --git a/src/3rdparty/chromium/third_party/openmax_dl/dl/sp/src/arm/detect.c b/src/3rdparty/chromium/third_party/openmax_dl/dl/sp/src/arm/detect.c
index 57bfe4089..94a3f7ddc 100644
--- a/src/3rdparty/chromium/third_party/openmax_dl/dl/sp/src/arm/detect.c
+++ b/src/3rdparty/chromium/third_party/openmax_dl/dl/sp/src/arm/detect.c
@@ -9,13 +9,57 @@
*
*/
-#include <cpu-features.h>
-
-#include "android/log.h"
#include "dl/sp/api/omxSP.h"
+// For ArmCpuCaps()
+#include <stdio.h>
+#include <string.h>
+
+// based on libvpx arm_cpudetect.c
+static int ArmCpuCaps(const char* cpuinfo_name) {
+ char cpuinfo_line[512];
+ FILE* f = fopen(cpuinfo_name, "r");
+ if (!f) {
+ // Assume Neon if /proc/cpuinfo is unavailable.
+ // This will occur for Chrome sandbox for Pepper or Render process.
+ return 1;
+ }
+ while (fgets(cpuinfo_line, sizeof(cpuinfo_line) - 1, f)) {
+ if (memcmp(cpuinfo_line, "Features", 8) == 0) {
+ char* p = strstr(cpuinfo_line, " neon");
+ if (p && (p[5] == ' ' || p[5] == '\n')) {
+ fclose(f);
+ return 1;
+ }
+ // aarch64 uses asimd for Neon.
+ p = strstr(cpuinfo_line, " asimd");
+ if (p && (p[6] == ' ' || p[6] == '\n')) {
+ fclose(f);
+ return 1;
+ }
+ }
+ }
+ fclose(f);
+ return 0;
+}
+
int omxSP_HasArmNeon() {
- return (android_getCpuFeatures() & ANDROID_CPU_ARM_FEATURE_NEON) != 0;
+#if defined(__arm__) || defined(__aarch64__)
+// gcc -mfpu=neon defines __ARM_NEON__
+// __ARM_NEON__ generates code that requires Neon. NaCL also requires Neon.
+// For Linux, /proc/cpuinfo can be tested but without that assume Neon.
+#if defined(__ARM_NEON__) || defined(__native_client__) || !defined(__linux__)
+ return 1;
+// For aarch64(arm64), /proc/cpuinfo's feature is not complete, e.g. no neon
+// flag in it.
+// So for aarch64, neon enabling is hard coded here.
+#elif defined(__aarch64__)
+ return 1;
+#else
+ // Linux arm parse text file for neon detect.
+ return ArmCpuCaps("/proc/cpuinfo");
+#endif
+#endif // __arm__
}
static void SetFFTRoutines() {
@@ -24,13 +68,9 @@ static void SetFFTRoutines() {
* forward and inverse FFTs
*/
if (omxSP_HasArmNeon()) {
- __android_log_print(ANDROID_LOG_INFO, "OpenMAX DL FFT",
- "Using NEON FFT");
omxSP_FFTFwd_RToCCS_F32 = omxSP_FFTFwd_RToCCS_F32_Sfs;
omxSP_FFTInv_CCSToR_F32 = omxSP_FFTInv_CCSToR_F32_Sfs;
} else {
- __android_log_print(ANDROID_LOG_INFO, "OpenMAX DL FFT",
- "Using non-NEON FFT");
omxSP_FFTFwd_RToCCS_F32 = omxSP_FFTFwd_RToCCS_F32_Sfs_vfp;
omxSP_FFTInv_CCSToR_F32 = omxSP_FFTInv_CCSToR_F32_Sfs_vfp;
}