diff -up firefox-127.0/media/ffvpx/libavcodec/codec_list.c.1667096 firefox-127.0/media/ffvpx/libavcodec/codec_list.c --- firefox-127.0/media/ffvpx/libavcodec/codec_list.c.1667096 2024-06-06 23:33:57.000000000 +0200 +++ firefox-127.0/media/ffvpx/libavcodec/codec_list.c 2024-06-10 12:42:39.353913204 +0200 @@ -11,6 +11,9 @@ static const FFCodec * const codec_list[ #if CONFIG_MP3_DECODER &ff_mp3_decoder, #endif +#ifdef CONFIG_LIBFDK_AAC + &ff_libfdk_aac_decoder, +#endif #if CONFIG_LIBDAV1D &ff_libdav1d_decoder, #endif diff -up firefox-127.0/media/ffvpx/libavcodec/libfdk-aacdec.c.1667096 firefox-127.0/media/ffvpx/libavcodec/libfdk-aacdec.c --- firefox-127.0/media/ffvpx/libavcodec/libfdk-aacdec.c.1667096 2024-06-10 12:42:39.354913201 +0200 +++ firefox-127.0/media/ffvpx/libavcodec/libfdk-aacdec.c 2024-06-10 16:28:30.332367814 +0200 @@ -0,0 +1,498 @@ +/* + * AAC decoder wrapper + * Copyright (c) 2012 Martin Storsjo + * + * This file is part of FFmpeg. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include + +#include "libavutil/channel_layout.h" +#include "libavutil/common.h" +#include "libavutil/opt.h" +#include "libavutil/mem.h" +#include "avcodec.h" +#include "codec_internal.h" +#include "decode.h" + +#ifdef AACDECODER_LIB_VL0 +#define FDKDEC_VER_AT_LEAST(vl0, vl1) \ + ((AACDECODER_LIB_VL0 > vl0) || \ + (AACDECODER_LIB_VL0 == vl0 && AACDECODER_LIB_VL1 >= vl1)) +#else +#define FDKDEC_VER_AT_LEAST(vl0, vl1) 0 +#endif + +#if !FDKDEC_VER_AT_LEAST(2, 5) // < 2.5.10 +#define AAC_PCM_MAX_OUTPUT_CHANNELS AAC_PCM_OUTPUT_CHANNELS +#endif + +enum ConcealMethod { + CONCEAL_METHOD_SPECTRAL_MUTING = 0, + CONCEAL_METHOD_NOISE_SUBSTITUTION = 1, + CONCEAL_METHOD_ENERGY_INTERPOLATION = 2, + CONCEAL_METHOD_NB, +}; + +typedef struct FDKAACDecContext { + const AVClass *class; + HANDLE_AACDECODER handle; + uint8_t *decoder_buffer; + int decoder_buffer_size; + uint8_t *anc_buffer; + int conceal_method; + int drc_level; + int drc_boost; + int drc_heavy; + int drc_effect; + int drc_cut; + int album_mode; + int level_limit; +#if FDKDEC_VER_AT_LEAST(2, 5) // 2.5.10 + int output_delay_set; + int flush_samples; + int delay_samples; +#endif + AVChannelLayout downmix_layout; +} FDKAACDecContext; + + +#define DMX_ANC_BUFFSIZE 128 +#define DECODER_MAX_CHANNELS 8 +#define DECODER_BUFFSIZE 2048 * sizeof(INT_PCM) + +#define OFFSET(x) offsetof(FDKAACDecContext, x) +#define AD AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM +static const AVOption fdk_aac_dec_options[] = { + { "conceal", "Error concealment method", OFFSET(conceal_method), AV_OPT_TYPE_INT, { .i64 = CONCEAL_METHOD_NOISE_SUBSTITUTION }, CONCEAL_METHOD_SPECTRAL_MUTING, CONCEAL_METHOD_NB - 1, AD, "conceal" }, + { "spectral", "Spectral muting", 0, AV_OPT_TYPE_CONST, { .i64 = CONCEAL_METHOD_SPECTRAL_MUTING }, INT_MIN, INT_MAX, AD, "conceal" }, + { "noise", "Noise Substitution", 0, AV_OPT_TYPE_CONST, { .i64 = CONCEAL_METHOD_NOISE_SUBSTITUTION }, INT_MIN, INT_MAX, AD, "conceal" }, + { "energy", "Energy Interpolation", 0, AV_OPT_TYPE_CONST, { .i64 = CONCEAL_METHOD_ENERGY_INTERPOLATION }, INT_MIN, INT_MAX, AD, "conceal" }, + { "drc_boost", "Dynamic Range Control: boost, where [0] is none and [127] is max boost", + OFFSET(drc_boost), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 127, AD, NULL }, + { "drc_cut", "Dynamic Range Control: attenuation factor, where [0] is none and [127] is max compression", + OFFSET(drc_cut), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 127, AD, NULL }, + { "drc_level", "Dynamic Range Control: reference level, quantized to 0.25dB steps where [0] is 0dB and [127] is -31.75dB, -1 for auto, and -2 for disabled", + OFFSET(drc_level), AV_OPT_TYPE_INT, { .i64 = -1}, -2, 127, AD, NULL }, + { "drc_heavy", "Dynamic Range Control: heavy compression, where [1] is on (RF mode) and [0] is off", + OFFSET(drc_heavy), AV_OPT_TYPE_INT, { .i64 = -1}, -1, 1, AD, NULL }, +#if FDKDEC_VER_AT_LEAST(2, 5) // 2.5.10 + { "level_limit", "Signal level limiting", + OFFSET(level_limit), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, AD }, +#endif +#if FDKDEC_VER_AT_LEAST(3, 0) // 3.0.0 + { "drc_effect","Dynamic Range Control: effect type, where e.g. [0] is none and [6] is general", + OFFSET(drc_effect), AV_OPT_TYPE_INT, { .i64 = -1}, -1, 8, AD, NULL }, +#endif +#if FDKDEC_VER_AT_LEAST(3, 1) // 3.1.0 + { "album_mode","Dynamic Range Control: album mode, where [0] is off and [1] is on", + OFFSET(album_mode), AV_OPT_TYPE_INT, { .i64 = -1}, -1, 1, AD, NULL }, +#endif + { "downmix", "Request a specific channel layout from the decoder", OFFSET(downmix_layout), AV_OPT_TYPE_CHLAYOUT, {.str = NULL}, .flags = AD }, + { NULL } +}; + +static const AVClass fdk_aac_dec_class = { + .class_name = "libfdk-aac decoder", + .item_name = av_default_item_name, + .option = fdk_aac_dec_options, + .version = LIBAVUTIL_VERSION_INT, +}; + +static int get_stream_info(AVCodecContext *avctx) +{ + FDKAACDecContext *s = avctx->priv_data; + CStreamInfo *info = aacDecoder_GetStreamInfo(s->handle); + int channel_counts[0x24] = { 0 }; + int i, ch_error = 0; + uint64_t ch_layout = 0; + + if (!info) { + av_log(avctx, AV_LOG_ERROR, "Unable to get stream info\n"); + return AVERROR_UNKNOWN; + } + + if (info->sampleRate <= 0) { + av_log(avctx, AV_LOG_ERROR, "Stream info not initialized\n"); + return AVERROR_UNKNOWN; + } + avctx->sample_rate = info->sampleRate; + avctx->frame_size = info->frameSize; +#if FDKDEC_VER_AT_LEAST(2, 5) // 2.5.10 + if (!s->output_delay_set && info->outputDelay) { + // Set this only once. + s->flush_samples = info->outputDelay; + s->delay_samples = info->outputDelay; + s->output_delay_set = 1; + } +#endif + + for (i = 0; i < info->numChannels; i++) { + AUDIO_CHANNEL_TYPE ctype = info->pChannelType[i]; + if (ctype <= ACT_NONE || ctype >= FF_ARRAY_ELEMS(channel_counts)) { + av_log(avctx, AV_LOG_WARNING, "unknown channel type\n"); + break; + } + channel_counts[ctype]++; + } + av_log(avctx, AV_LOG_DEBUG, + "%d channels - front:%d side:%d back:%d lfe:%d top:%d\n", + info->numChannels, + channel_counts[ACT_FRONT], channel_counts[ACT_SIDE], + channel_counts[ACT_BACK], channel_counts[ACT_LFE], + channel_counts[ACT_FRONT_TOP] + channel_counts[ACT_SIDE_TOP] + + channel_counts[ACT_BACK_TOP] + channel_counts[ACT_TOP]); + + switch (channel_counts[ACT_FRONT]) { + case 4: + ch_layout |= AV_CH_LAYOUT_STEREO | AV_CH_FRONT_LEFT_OF_CENTER | + AV_CH_FRONT_RIGHT_OF_CENTER; + break; + case 3: + ch_layout |= AV_CH_LAYOUT_STEREO | AV_CH_FRONT_CENTER; + break; + case 2: + ch_layout |= AV_CH_LAYOUT_STEREO; + break; + case 1: + ch_layout |= AV_CH_FRONT_CENTER; + break; + default: + av_log(avctx, AV_LOG_WARNING, + "unsupported number of front channels: %d\n", + channel_counts[ACT_FRONT]); + ch_error = 1; + break; + } + if (channel_counts[ACT_SIDE] > 0) { + if (channel_counts[ACT_SIDE] == 2) { + ch_layout |= AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT; + } else { + av_log(avctx, AV_LOG_WARNING, + "unsupported number of side channels: %d\n", + channel_counts[ACT_SIDE]); + ch_error = 1; + } + } + if (channel_counts[ACT_BACK] > 0) { + switch (channel_counts[ACT_BACK]) { + case 3: + ch_layout |= AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT | AV_CH_BACK_CENTER; + break; + case 2: + ch_layout |= AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT; + break; + case 1: + ch_layout |= AV_CH_BACK_CENTER; + break; + default: + av_log(avctx, AV_LOG_WARNING, + "unsupported number of back channels: %d\n", + channel_counts[ACT_BACK]); + ch_error = 1; + break; + } + } + if (channel_counts[ACT_LFE] > 0) { + if (channel_counts[ACT_LFE] == 1) { + ch_layout |= AV_CH_LOW_FREQUENCY; + } else { + av_log(avctx, AV_LOG_WARNING, + "unsupported number of LFE channels: %d\n", + channel_counts[ACT_LFE]); + ch_error = 1; + } + } + + av_channel_layout_uninit(&avctx->ch_layout); + av_channel_layout_from_mask(&avctx->ch_layout, ch_layout); + if (!ch_error && avctx->ch_layout.nb_channels != info->numChannels) { + av_log(avctx, AV_LOG_WARNING, "unsupported channel configuration\n"); + ch_error = 1; + } + if (ch_error) + avctx->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC; + + return 0; +} + +static av_cold int fdk_aac_decode_close(AVCodecContext *avctx) +{ + FDKAACDecContext *s = avctx->priv_data; + + if (s->handle) + aacDecoder_Close(s->handle); + av_freep(&s->decoder_buffer); + av_freep(&s->anc_buffer); + + return 0; +} + +static av_cold int fdk_aac_decode_init(AVCodecContext *avctx) +{ + FDKAACDecContext *s = avctx->priv_data; + AAC_DECODER_ERROR err; + + s->handle = aacDecoder_Open(avctx->extradata_size ? TT_MP4_RAW : TT_MP4_ADTS, 1); + if (!s->handle) { + av_log(avctx, AV_LOG_ERROR, "Error opening decoder\n"); + return AVERROR_UNKNOWN; + } + + if (avctx->extradata_size) { + if ((err = aacDecoder_ConfigRaw(s->handle, &avctx->extradata, + &avctx->extradata_size)) != AAC_DEC_OK) { + av_log(avctx, AV_LOG_ERROR, "Unable to set extradata\n"); + return AVERROR_INVALIDDATA; + } + } + + if ((err = aacDecoder_SetParam(s->handle, AAC_CONCEAL_METHOD, + s->conceal_method)) != AAC_DEC_OK) { + av_log(avctx, AV_LOG_ERROR, "Unable to set error concealment method\n"); + return AVERROR_UNKNOWN; + } + +#if FF_API_OLD_CHANNEL_LAYOUT +FF_DISABLE_DEPRECATION_WARNINGS + if (avctx->request_channel_layout) { + av_channel_layout_uninit(&s->downmix_layout); + av_channel_layout_from_mask(&s->downmix_layout, avctx->request_channel_layout); + } +FF_ENABLE_DEPRECATION_WARNINGS +#endif + if (s->downmix_layout.nb_channels > 0 && + s->downmix_layout.order != AV_CHANNEL_ORDER_NATIVE) { + int downmix_channels = -1; + + switch (s->downmix_layout.u.mask) { + case AV_CH_LAYOUT_STEREO: + case AV_CH_LAYOUT_STEREO_DOWNMIX: + downmix_channels = 2; + break; + case AV_CH_LAYOUT_MONO: + downmix_channels = 1; + break; + default: + av_log(avctx, AV_LOG_WARNING, "Invalid downmix option\n"); + break; + } + + if (downmix_channels != -1) { + if (aacDecoder_SetParam(s->handle, AAC_PCM_MAX_OUTPUT_CHANNELS, + downmix_channels) != AAC_DEC_OK) { + av_log(avctx, AV_LOG_WARNING, "Unable to set output channels in the decoder\n"); + } else { + s->anc_buffer = av_malloc(DMX_ANC_BUFFSIZE); + if (!s->anc_buffer) { + av_log(avctx, AV_LOG_ERROR, "Unable to allocate ancillary buffer for the decoder\n"); + return AVERROR(ENOMEM); + } + if (aacDecoder_AncDataInit(s->handle, s->anc_buffer, DMX_ANC_BUFFSIZE)) { + av_log(avctx, AV_LOG_ERROR, "Unable to register downmix ancillary buffer in the decoder\n"); + return AVERROR_UNKNOWN; + } + } + } + } + + if (s->drc_boost != -1) { + if (aacDecoder_SetParam(s->handle, AAC_DRC_BOOST_FACTOR, s->drc_boost) != AAC_DEC_OK) { + av_log(avctx, AV_LOG_ERROR, "Unable to set DRC boost factor in the decoder\n"); + return AVERROR_UNKNOWN; + } + } + + if (s->drc_cut != -1) { + if (aacDecoder_SetParam(s->handle, AAC_DRC_ATTENUATION_FACTOR, s->drc_cut) != AAC_DEC_OK) { + av_log(avctx, AV_LOG_ERROR, "Unable to set DRC attenuation factor in the decoder\n"); + return AVERROR_UNKNOWN; + } + } + + if (s->drc_level != -1) { + // This option defaults to -1, i.e. not calling + // aacDecoder_SetParam(AAC_DRC_REFERENCE_LEVEL) at all, which defaults + // to the level from DRC metadata, if available. The user can set + // -drc_level -2, which calls aacDecoder_SetParam( + // AAC_DRC_REFERENCE_LEVEL) with a negative value, which then + // explicitly disables the feature. + if (aacDecoder_SetParam(s->handle, AAC_DRC_REFERENCE_LEVEL, s->drc_level) != AAC_DEC_OK) { + av_log(avctx, AV_LOG_ERROR, "Unable to set DRC reference level in the decoder\n"); + return AVERROR_UNKNOWN; + } + } + + if (s->drc_heavy != -1) { + if (aacDecoder_SetParam(s->handle, AAC_DRC_HEAVY_COMPRESSION, s->drc_heavy) != AAC_DEC_OK) { + av_log(avctx, AV_LOG_ERROR, "Unable to set DRC heavy compression in the decoder\n"); + return AVERROR_UNKNOWN; + } + } + +#if FDKDEC_VER_AT_LEAST(2, 5) // 2.5.10 + // Setting this parameter to -1 enables the auto behaviour in the library. + if (aacDecoder_SetParam(s->handle, AAC_PCM_LIMITER_ENABLE, s->level_limit) != AAC_DEC_OK) { + av_log(avctx, AV_LOG_ERROR, "Unable to set in signal level limiting in the decoder\n"); + return AVERROR_UNKNOWN; + } +#endif + +#if FDKDEC_VER_AT_LEAST(3, 0) // 3.0.0 + if (s->drc_effect != -1) { + if (aacDecoder_SetParam(s->handle, AAC_UNIDRC_SET_EFFECT, s->drc_effect) != AAC_DEC_OK) { + av_log(avctx, AV_LOG_ERROR, "Unable to set DRC effect type in the decoder\n"); + return AVERROR_UNKNOWN; + } + } +#endif + +#if FDKDEC_VER_AT_LEAST(3, 1) // 3.1.0 + if (s->album_mode != -1) { + if (aacDecoder_SetParam(s->handle, AAC_UNIDRC_ALBUM_MODE, s->album_mode) != AAC_DEC_OK) { + av_log(avctx, AV_LOG_ERROR, "Unable to set album mode in the decoder\n"); + return AVERROR_UNKNOWN; + } + } +#endif + + avctx->sample_fmt = AV_SAMPLE_FMT_S16; + + s->decoder_buffer_size = DECODER_BUFFSIZE * DECODER_MAX_CHANNELS; + s->decoder_buffer = av_malloc(s->decoder_buffer_size); + if (!s->decoder_buffer) + return AVERROR(ENOMEM); + + return 0; +} + +static int fdk_aac_decode_frame(AVCodecContext *avctx, AVFrame *frame, + int *got_frame_ptr, AVPacket *avpkt) +{ + FDKAACDecContext *s = avctx->priv_data; + int ret; + AAC_DECODER_ERROR err; + UINT valid = avpkt->size; + UINT flags = 0; + int input_offset = 0; + + if (avpkt->size) { + err = aacDecoder_Fill(s->handle, &avpkt->data, &avpkt->size, &valid); + if (err != AAC_DEC_OK) { + av_log(avctx, AV_LOG_ERROR, "aacDecoder_Fill() failed: %x\n", err); + return AVERROR_INVALIDDATA; + } + } else { +#if FDKDEC_VER_AT_LEAST(2, 5) // 2.5.10 + /* Handle decoder draining */ + if (s->flush_samples > 0) { + flags |= AACDEC_FLUSH; + } else { + return AVERROR_EOF; + } +#else + return AVERROR_EOF; +#endif + } + + err = aacDecoder_DecodeFrame(s->handle, (INT_PCM *) s->decoder_buffer, + s->decoder_buffer_size / sizeof(INT_PCM), + flags); + if (err == AAC_DEC_NOT_ENOUGH_BITS) { + ret = avpkt->size - valid; + goto end; + } + if (err != AAC_DEC_OK) { + av_log(avctx, AV_LOG_ERROR, + "aacDecoder_DecodeFrame() failed: %x\n", err); + ret = AVERROR_UNKNOWN; + goto end; + } + + if ((ret = get_stream_info(avctx)) < 0) + goto end; + frame->nb_samples = avctx->frame_size; + +#if FDKDEC_VER_AT_LEAST(2, 5) // 2.5.10 + if (flags & AACDEC_FLUSH) { + // Only return the right amount of samples at the end; if calling the + // decoder with AACDEC_FLUSH, it will keep returning frames indefinitely. + frame->nb_samples = FFMIN(s->flush_samples, frame->nb_samples); + av_log(s, AV_LOG_DEBUG, "Returning %d/%d delayed samples.\n", + frame->nb_samples, s->flush_samples); + s->flush_samples -= frame->nb_samples; + } else { + // Trim off samples from the start to compensate for extra decoder + // delay. We could also just adjust the pts, but this avoids + // including the extra samples in the output altogether. + if (s->delay_samples) { + int drop_samples = FFMIN(s->delay_samples, frame->nb_samples); + av_log(s, AV_LOG_DEBUG, "Dropping %d/%d delayed samples.\n", + drop_samples, s->delay_samples); + s->delay_samples -= drop_samples; + frame->nb_samples -= drop_samples; + input_offset = drop_samples * avctx->ch_layout.nb_channels; + if (frame->nb_samples <= 0) + return 0; + } + } +#endif + + if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) + goto end; + + memcpy(frame->extended_data[0], s->decoder_buffer + input_offset, + avctx->ch_layout.nb_channels * frame->nb_samples * + av_get_bytes_per_sample(avctx->sample_fmt)); + + *got_frame_ptr = 1; + ret = avpkt->size - valid; + +end: + return ret; +} + +static av_cold void fdk_aac_decode_flush(AVCodecContext *avctx) +{ + FDKAACDecContext *s = avctx->priv_data; + AAC_DECODER_ERROR err; + + if (!s->handle) + return; + + if ((err = aacDecoder_SetParam(s->handle, + AAC_TPDEC_CLEAR_BUFFER, 1)) != AAC_DEC_OK) + av_log(avctx, AV_LOG_WARNING, "failed to clear buffer when flushing\n"); +} + +const FFCodec ff_libfdk_aac_decoder = { + .p.name = "libfdk_aac", + CODEC_LONG_NAME("Fraunhofer FDK AAC"), + .p.type = AVMEDIA_TYPE_AUDIO, + .p.id = AV_CODEC_ID_AAC, + .priv_data_size = sizeof(FDKAACDecContext), + .init = fdk_aac_decode_init, + FF_CODEC_DECODE_CB(fdk_aac_decode_frame), + .close = fdk_aac_decode_close, + .flush = fdk_aac_decode_flush, + .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_CHANNEL_CONF +#if FDKDEC_VER_AT_LEAST(2, 5) // 2.5.10 + | AV_CODEC_CAP_DELAY +#endif + , + .p.priv_class = &fdk_aac_dec_class, + .caps_internal = FF_CODEC_CAP_INIT_CLEANUP, + .p.wrapper_name = "libfdk", +}; diff -up firefox-127.0/media/ffvpx/libavcodec/moz.build.1667096 firefox-127.0/media/ffvpx/libavcodec/moz.build --- firefox-127.0/media/ffvpx/libavcodec/moz.build.1667096 2024-06-06 23:33:58.000000000 +0200 +++ firefox-127.0/media/ffvpx/libavcodec/moz.build 2024-06-10 12:42:39.354913201 +0200 @@ -151,6 +151,12 @@ else: CXXFLAGS += CONFIG["MOZ_LIBVPX_CFLAGS"] OS_LIBS += CONFIG["MOZ_LIBVPX_LIBS"] +if CONFIG['MOZ_FDK_AAC']: + SOURCES += [ + 'libfdk-aacdec.c', + ] + OS_LIBS += CONFIG['MOZ_FDK_AAC_LIBS'] + SYMBOLS_FILE = 'avcodec.symbols' NoVisibilityFlags() diff -up firefox-127.0/toolkit/moz.configure.1667096 firefox-127.0/toolkit/moz.configure --- firefox-127.0/toolkit/moz.configure.1667096 2024-06-10 12:42:39.312913316 +0200 +++ firefox-127.0/toolkit/moz.configure 2024-06-10 12:42:39.355913199 +0200 @@ -2412,6 +2412,15 @@ with only_when(compile_environment): set_config("MOZ_SYSTEM_PNG", True, when="--with-system-png") +# FDK AAC support +# ============================================================== +option('--with-system-fdk-aac', + help='Use system libfdk-aac (located with pkgconfig)') + +system_fdk_aac = pkg_check_modules('MOZ_FDK_AAC', 'fdk-aac', + when='--with-system-fdk-aac') + +set_config('MOZ_FDK_AAC', depends(when=system_fdk_aac)(lambda: True)) # FFmpeg's ffvpx configuration # ==============================================================