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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
#include "FFmpegLibWrapper.h"
#include "FFmpegLog.h"
#include "mozilla/PodOperations.h"
#ifdef MOZ_FFMPEG
# include "mozilla/StaticPrefs_media.h"
#endif
#include "mozilla/Types.h"
#include "PlatformDecoderModule.h"
#include "prlink.h"
#ifdef MOZ_WIDGET_GTK
# include "mozilla/gfx/gfxVars.h"
# include "mozilla/widget/DMABufDevice.h"
# include "VALibWrapper.h"
#endif
#define AV_LOG_QUIET -8
#define AV_LOG_PANIC 0
#define AV_LOG_FATAL 8
#define AV_LOG_ERROR 16
#define AV_LOG_WARNING 24
#define AV_LOG_INFO 32
#define AV_LOG_VERBOSE 40
#define AV_LOG_DEBUG 48
#define AV_LOG_TRACE 56
namespace mozilla {
static LazyLogModule sFFmpegLibLog("FFmpegLib");
FFmpegLibWrapper::LinkResult FFmpegLibWrapper::Link() {
if (!mAVCodecLib || !mAVUtilLib) {
Unlink();
return LinkResult::NoProvidedLib;
}
avcodec_version =
(decltype(avcodec_version))PR_FindSymbol(mAVCodecLib, "avcodec_version");
if (!avcodec_version) {
Unlink();
return LinkResult::NoAVCodecVersion;
}
uint32_t version = avcodec_version();
uint32_t macro = (version >> 16) & 0xFFu;
mVersion = static_cast<int>(macro);
uint32_t micro = version & 0xFFu;
// A micro version >= 100 indicates that it's FFmpeg (as opposed to LibAV).
bool isFFMpeg = micro >= 100;
if (!isFFMpeg) {
if (macro == 57) {
// Due to current AVCodecContext binary incompatibility we can only
// support FFmpeg 57 at this stage.
Unlink();
FFMPEGP_LOG("FFmpeg 57 is banned due to binary incompatibility");
return LinkResult::CannotUseLibAV57;
}
#ifdef MOZ_FFMPEG
if (version < (54u << 16 | 35u << 8 | 1u) &&
!StaticPrefs::media_libavcodec_allow_obsolete()) {
// Refuse any libavcodec version prior to 54.35.1.
// (Unless media.libavcodec.allow-obsolete==true)
Unlink();
FFMPEGP_LOG("libavcodec version prior to 54.35.1 is too old");
return LinkResult::BlockedOldLibAVVersion;
}
#endif
}
enum {
AV_FUNC_AVUTIL_MASK = 1 << 15,
AV_FUNC_53 = 1 << 0,
AV_FUNC_54 = 1 << 1,
AV_FUNC_55 = 1 << 2,
AV_FUNC_56 = 1 << 3,
AV_FUNC_57 = 1 << 4,
AV_FUNC_58 = 1 << 5,
AV_FUNC_59 = 1 << 6,
AV_FUNC_60 = 1 << 7,
AV_FUNC_61 = 1 << 8,
AV_FUNC_AVUTIL_53 = AV_FUNC_53 | AV_FUNC_AVUTIL_MASK,
AV_FUNC_AVUTIL_54 = AV_FUNC_54 | AV_FUNC_AVUTIL_MASK,
AV_FUNC_AVUTIL_55 = AV_FUNC_55 | AV_FUNC_AVUTIL_MASK,
AV_FUNC_AVUTIL_56 = AV_FUNC_56 | AV_FUNC_AVUTIL_MASK,
AV_FUNC_AVUTIL_57 = AV_FUNC_57 | AV_FUNC_AVUTIL_MASK,
AV_FUNC_AVUTIL_58 = AV_FUNC_58 | AV_FUNC_AVUTIL_MASK,
AV_FUNC_AVUTIL_59 = AV_FUNC_59 | AV_FUNC_AVUTIL_MASK,
AV_FUNC_AVUTIL_60 = AV_FUNC_60 | AV_FUNC_AVUTIL_MASK,
AV_FUNC_AVUTIL_61 = AV_FUNC_61 | AV_FUNC_AVUTIL_MASK,
AV_FUNC_AVCODEC_ALL = AV_FUNC_53 | AV_FUNC_54 | AV_FUNC_55 | AV_FUNC_56 |
AV_FUNC_57 | AV_FUNC_58 | AV_FUNC_59 | AV_FUNC_60 |
AV_FUNC_61,
AV_FUNC_AVUTIL_ALL = AV_FUNC_AVCODEC_ALL | AV_FUNC_AVUTIL_MASK
};
switch (macro) {
case 53:
version = AV_FUNC_53;
break;
case 54:
version = AV_FUNC_54;
break;
case 55:
version = AV_FUNC_55;
break;
case 56:
version = AV_FUNC_56;
break;
case 57:
version = AV_FUNC_57;
break;
case 58:
version = AV_FUNC_58;
break;
case 59:
version = AV_FUNC_59;
break;
case 60:
version = AV_FUNC_60;
break;
case 61:
version = AV_FUNC_61;
break;
default:
FFMPEGV_LOG("Unknown avcodec version: %d", macro);
Unlink();
return isFFMpeg ? ((macro > 57) ? LinkResult::UnknownFutureFFMpegVersion
: LinkResult::UnknownOlderFFMpegVersion)
// All LibAV versions<54.35.1 are blocked, therefore we
// must be dealing with a later one.
: LinkResult::UnknownFutureLibAVVersion;
}
FFMPEGP_LOG("version: 0x%x, macro: %d, micro: %d, isFFMpeg: %s", version,
macro, micro, isFFMpeg ? "yes" : "no");
#define AV_FUNC_OPTION_SILENT(func, ver) \
if ((ver) & version) { \
if (!((func) = (decltype(func))PR_FindSymbol( \
((ver) & AV_FUNC_AVUTIL_MASK) ? mAVUtilLib : mAVCodecLib, \
#func))) { \
} \
} else { \
(func) = (decltype(func))nullptr; \
}
#define AV_FUNC_OPTION(func, ver) \
AV_FUNC_OPTION_SILENT(func, ver) \
if ((ver) & version && (func) == (decltype(func))nullptr) { \
FFMPEGP_LOG("Couldn't load function " #func); \
}
#define AV_FUNC(func, ver) \
AV_FUNC_OPTION(func, ver) \
if ((ver) & version && !(func)) { \
Unlink(); \
return isFFMpeg ? LinkResult::MissingFFMpegFunction \
: LinkResult::MissingLibAVFunction; \
}
AV_FUNC(av_lockmgr_register, AV_FUNC_53 | AV_FUNC_54 | AV_FUNC_55 |
AV_FUNC_56 | AV_FUNC_57 | AV_FUNC_58)
AV_FUNC(avcodec_alloc_context3, AV_FUNC_AVCODEC_ALL)
AV_FUNC(avcodec_close, AV_FUNC_AVCODEC_ALL)
AV_FUNC(avcodec_decode_audio4, AV_FUNC_53 | AV_FUNC_54 | AV_FUNC_55 |
AV_FUNC_56 | AV_FUNC_57 | AV_FUNC_58)
AV_FUNC(avcodec_decode_video2, AV_FUNC_53 | AV_FUNC_54 | AV_FUNC_55 |
AV_FUNC_56 | AV_FUNC_57 | AV_FUNC_58)
AV_FUNC(avcodec_find_decoder, AV_FUNC_AVCODEC_ALL)
AV_FUNC(avcodec_find_decoder_by_name,
AV_FUNC_58 | AV_FUNC_59 | AV_FUNC_60 | AV_FUNC_61)
AV_FUNC(avcodec_find_encoder, AV_FUNC_AVCODEC_ALL)
AV_FUNC(avcodec_find_encoder_by_name,
AV_FUNC_58 | AV_FUNC_59 | AV_FUNC_60 | AV_FUNC_61)
AV_FUNC(avcodec_flush_buffers, AV_FUNC_AVCODEC_ALL)
AV_FUNC(avcodec_open2, AV_FUNC_AVCODEC_ALL)
AV_FUNC(avcodec_register_all, AV_FUNC_53 | AV_FUNC_54 | AV_FUNC_55 |
AV_FUNC_56 | AV_FUNC_57 | AV_FUNC_58)
AV_FUNC(av_init_packet, (AV_FUNC_55 | AV_FUNC_56 | AV_FUNC_57 | AV_FUNC_58 |
AV_FUNC_59 | AV_FUNC_60))
AV_FUNC(av_parser_init, AV_FUNC_AVCODEC_ALL)
AV_FUNC(av_parser_close, AV_FUNC_AVCODEC_ALL)
AV_FUNC(av_parser_parse2, AV_FUNC_AVCODEC_ALL)
AV_FUNC(avcodec_align_dimensions, AV_FUNC_AVCODEC_ALL)
AV_FUNC(avcodec_alloc_frame, (AV_FUNC_53 | AV_FUNC_54))
AV_FUNC(avcodec_get_frame_defaults, (AV_FUNC_53 | AV_FUNC_54))
AV_FUNC(avcodec_free_frame, AV_FUNC_54)
AV_FUNC(avcodec_send_packet,
AV_FUNC_58 | AV_FUNC_59 | AV_FUNC_60 | AV_FUNC_61)
AV_FUNC(avcodec_receive_packet,
AV_FUNC_58 | AV_FUNC_59 | AV_FUNC_60 | AV_FUNC_61)
AV_FUNC(avcodec_send_frame, AV_FUNC_58 | AV_FUNC_59 | AV_FUNC_60 | AV_FUNC_61)
AV_FUNC(avcodec_receive_frame,
AV_FUNC_58 | AV_FUNC_59 | AV_FUNC_60 | AV_FUNC_61)
AV_FUNC(avcodec_default_get_buffer2,
(AV_FUNC_55 | AV_FUNC_56 | AV_FUNC_57 | AV_FUNC_58 | AV_FUNC_59 |
AV_FUNC_60 | AV_FUNC_61))
AV_FUNC(av_packet_alloc,
(AV_FUNC_57 | AV_FUNC_58 | AV_FUNC_59 | AV_FUNC_60 | AV_FUNC_61))
AV_FUNC(av_packet_unref,
(AV_FUNC_57 | AV_FUNC_58 | AV_FUNC_59 | AV_FUNC_60 | AV_FUNC_61))
AV_FUNC(av_packet_free,
(AV_FUNC_57 | AV_FUNC_58 | AV_FUNC_59 | AV_FUNC_60 | AV_FUNC_61))
AV_FUNC(avcodec_descriptor_get, AV_FUNC_AVCODEC_ALL)
AV_FUNC(av_log_set_callback, AV_FUNC_AVUTIL_ALL)
AV_FUNC(av_log_set_level, AV_FUNC_AVUTIL_ALL)
AV_FUNC(av_malloc, AV_FUNC_AVUTIL_ALL)
AV_FUNC(av_freep, AV_FUNC_AVUTIL_ALL)
AV_FUNC(av_frame_alloc,
(AV_FUNC_AVUTIL_55 | AV_FUNC_AVUTIL_56 | AV_FUNC_AVUTIL_57 |
AV_FUNC_AVUTIL_58 | AV_FUNC_AVUTIL_59 | AV_FUNC_AVUTIL_60 |
AV_FUNC_AVUTIL_61))
AV_FUNC(av_frame_free,
(AV_FUNC_AVUTIL_55 | AV_FUNC_AVUTIL_56 | AV_FUNC_AVUTIL_57 |
AV_FUNC_AVUTIL_58 | AV_FUNC_AVUTIL_59 | AV_FUNC_AVUTIL_60 |
AV_FUNC_AVUTIL_61))
AV_FUNC(av_frame_unref,
(AV_FUNC_AVUTIL_55 | AV_FUNC_AVUTIL_56 | AV_FUNC_AVUTIL_57 |
AV_FUNC_AVUTIL_58 | AV_FUNC_AVUTIL_59 | AV_FUNC_AVUTIL_60 |
AV_FUNC_AVUTIL_61))
AV_FUNC(av_frame_get_buffer,
(AV_FUNC_AVUTIL_55 | AV_FUNC_AVUTIL_56 | AV_FUNC_AVUTIL_57 |
AV_FUNC_AVUTIL_58 | AV_FUNC_AVUTIL_59 | AV_FUNC_AVUTIL_60 |
AV_FUNC_AVUTIL_61))
AV_FUNC(av_frame_make_writable,
(AV_FUNC_AVUTIL_55 | AV_FUNC_AVUTIL_56 | AV_FUNC_AVUTIL_57 |
AV_FUNC_AVUTIL_58 | AV_FUNC_AVUTIL_59 | AV_FUNC_AVUTIL_60 |
AV_FUNC_AVUTIL_61))
AV_FUNC(av_image_check_size, AV_FUNC_AVUTIL_ALL)
AV_FUNC(av_image_get_buffer_size, AV_FUNC_AVUTIL_ALL)
AV_FUNC_OPTION(av_channel_layout_default,
AV_FUNC_AVUTIL_60 | AV_FUNC_AVUTIL_61)
AV_FUNC_OPTION(av_channel_layout_from_mask,
AV_FUNC_AVUTIL_60 | AV_FUNC_AVUTIL_61)
AV_FUNC_OPTION(av_channel_layout_copy, AV_FUNC_AVUTIL_60 | AV_FUNC_AVUTIL_61)
AV_FUNC_OPTION(av_buffer_get_opaque,
(AV_FUNC_AVUTIL_56 | AV_FUNC_AVUTIL_57 | AV_FUNC_AVUTIL_58 |
AV_FUNC_AVUTIL_59 | AV_FUNC_AVUTIL_60 | AV_FUNC_AVUTIL_61))
AV_FUNC(
av_buffer_create,
(AV_FUNC_AVUTIL_55 | AV_FUNC_AVUTIL_56 | AV_FUNC_AVUTIL_57 |
AV_FUNC_AVUTIL_58 | AV_FUNC_AVUTIL_59 | AV_FUNC_AVUTIL_60 | AV_FUNC_61))
AV_FUNC_OPTION(av_frame_get_colorspace,
AV_FUNC_AVUTIL_55 | AV_FUNC_AVUTIL_56 | AV_FUNC_AVUTIL_57 |
AV_FUNC_AVUTIL_58)
AV_FUNC_OPTION(av_frame_get_color_range,
AV_FUNC_AVUTIL_55 | AV_FUNC_AVUTIL_56 | AV_FUNC_AVUTIL_57 |
AV_FUNC_AVUTIL_58)
AV_FUNC(av_strerror, AV_FUNC_AVUTIL_58 | AV_FUNC_AVUTIL_59 |
AV_FUNC_AVUTIL_60 | AV_FUNC_AVUTIL_61)
AV_FUNC(av_get_sample_fmt_name, AV_FUNC_AVUTIL_ALL)
AV_FUNC(av_dict_set, AV_FUNC_AVUTIL_ALL)
AV_FUNC(av_dict_free, AV_FUNC_AVUTIL_ALL)
AV_FUNC(av_opt_set, AV_FUNC_AVUTIL_ALL)
AV_FUNC(av_opt_set_double, AV_FUNC_AVUTIL_ALL)
AV_FUNC(av_opt_set_int, AV_FUNC_AVUTIL_ALL)
AV_FUNC(avcodec_free_context,
AV_FUNC_57 | AV_FUNC_58 | AV_FUNC_59 | AV_FUNC_60 | AV_FUNC_61)
AV_FUNC_OPTION_SILENT(avcodec_get_hw_config,
AV_FUNC_58 | AV_FUNC_59 | AV_FUNC_60 | AV_FUNC_61)
AV_FUNC_OPTION_SILENT(av_codec_is_decoder,
AV_FUNC_58 | AV_FUNC_59 | AV_FUNC_60 | AV_FUNC_61)
AV_FUNC_OPTION_SILENT(av_codec_is_encoder,
AV_FUNC_58 | AV_FUNC_59 | AV_FUNC_60 | AV_FUNC_61)
AV_FUNC_OPTION_SILENT(av_codec_iterate,
AV_FUNC_58 | AV_FUNC_59 | AV_FUNC_60 | AV_FUNC_61)
AV_FUNC_OPTION_SILENT(av_hwdevice_ctx_init,
AV_FUNC_AVUTIL_58 | AV_FUNC_AVUTIL_59 |
AV_FUNC_AVUTIL_60 | AV_FUNC_AVUTIL_61)
AV_FUNC_OPTION_SILENT(av_hwdevice_ctx_alloc,
AV_FUNC_AVUTIL_58 | AV_FUNC_AVUTIL_59 |
AV_FUNC_AVUTIL_60 | AV_FUNC_AVUTIL_61)
AV_FUNC_OPTION_SILENT(av_buffer_ref, AV_FUNC_AVUTIL_58 | AV_FUNC_AVUTIL_59 |
AV_FUNC_AVUTIL_60 |
AV_FUNC_AVUTIL_61)
AV_FUNC_OPTION_SILENT(av_buffer_unref, AV_FUNC_AVUTIL_58 | AV_FUNC_AVUTIL_59 |
AV_FUNC_AVUTIL_60 |
AV_FUNC_AVUTIL_61)
AV_FUNC_OPTION_SILENT(av_hwframe_ctx_alloc,
AV_FUNC_AVUTIL_58 | AV_FUNC_AVUTIL_59 |
AV_FUNC_AVUTIL_60 | AV_FUNC_AVUTIL_61)
AV_FUNC_OPTION_SILENT(av_hwframe_ctx_init,
AV_FUNC_AVUTIL_58 | AV_FUNC_AVUTIL_59 |
AV_FUNC_AVUTIL_60 | AV_FUNC_AVUTIL_61)
#ifdef MOZ_WIDGET_GTK
AV_FUNC_OPTION_SILENT(av_hwdevice_hwconfig_alloc,
AV_FUNC_58 | AV_FUNC_59 | AV_FUNC_60 | AV_FUNC_61)
AV_FUNC_OPTION_SILENT(av_hwdevice_get_hwframe_constraints,
AV_FUNC_58 | AV_FUNC_59 | AV_FUNC_60 | AV_FUNC_61)
AV_FUNC_OPTION_SILENT(av_hwframe_constraints_free,
AV_FUNC_58 | AV_FUNC_59 | AV_FUNC_60 | AV_FUNC_61)
AV_FUNC_OPTION_SILENT(av_hwframe_transfer_get_formats,
AV_FUNC_58 | AV_FUNC_59 | AV_FUNC_60 | AV_FUNC_61)
AV_FUNC_OPTION_SILENT(av_hwdevice_ctx_create_derived,
AV_FUNC_58 | AV_FUNC_59 | AV_FUNC_60 | AV_FUNC_61)
AV_FUNC_OPTION_SILENT(avcodec_get_name, AV_FUNC_57 | AV_FUNC_58 | AV_FUNC_59 |
AV_FUNC_60 | AV_FUNC_61)
AV_FUNC_OPTION_SILENT(av_get_pix_fmt_string,
AV_FUNC_AVUTIL_58 | AV_FUNC_AVUTIL_59 |
AV_FUNC_AVUTIL_60 | AV_FUNC_AVUTIL_61)
#endif
AV_FUNC_OPTION(av_tx_init, AV_FUNC_AVUTIL_ALL)
AV_FUNC_OPTION(av_tx_uninit, AV_FUNC_AVUTIL_ALL)
#undef AV_FUNC
#undef AV_FUNC_OPTION
if (avcodec_register_all) {
avcodec_register_all();
}
UpdateLogLevel();
av_log_set_callback(Log);
return LinkResult::Success;
}
void FFmpegLibWrapper::Unlink() {
if (av_lockmgr_register) {
// Registering a null lockmgr cause the destruction of libav* global mutexes
// as the default lockmgr that allocated them will be deregistered.
// This prevents ASAN and valgrind to report sizeof(pthread_mutex_t) leaks.
av_lockmgr_register(nullptr);
}
#ifndef MOZ_TSAN
// With TSan, we cannot unload libav once we have loaded it because
// TSan does not support unloading libraries that are matched from its
// suppression list. Hence we just keep the library loaded in TSan builds.
if (mAVUtilLib && mAVUtilLib != mAVCodecLib) {
PR_UnloadLibrary(mAVUtilLib);
}
if (mAVCodecLib) {
PR_UnloadLibrary(mAVCodecLib);
}
#endif
PodZero(this);
}
void FFmpegLibWrapper::UpdateLogLevel() {
LogModule* mod = sFFmpegLibLog;
av_log_set_level(ToLibLogLevel(mod->Level()));
}
/* static */ void FFmpegLibWrapper::RegisterCallbackLogLevel(
PrefChangedFunc aCallback) {
if (!NS_IsMainThread()) {
NS_DispatchToMainThread(NS_NewRunnableFunction(
__func__, [aCallback]() { RegisterCallbackLogLevel(aCallback); }));
return;
}
Preferences::RegisterCallback(aCallback, "logging.FFmpegLib"_ns);
}
/* static */ int FFmpegLibWrapper::ToLibLogLevel(LogLevel aLevel) {
switch (aLevel) {
case LogLevel::Disabled:
return AV_LOG_QUIET;
case LogLevel::Error:
return AV_LOG_ERROR;
case LogLevel::Warning:
return AV_LOG_WARNING;
case LogLevel::Info:
return AV_LOG_INFO;
case LogLevel::Debug:
return AV_LOG_DEBUG;
case LogLevel::Verbose:
return AV_LOG_TRACE;
default:
MOZ_ASSERT_UNREACHABLE("Unhandled log level!");
break;
}
return AV_LOG_QUIET;
}
/* static */ LogLevel FFmpegLibWrapper::FromLibLogLevel(int aLevel) {
switch (aLevel) {
case AV_LOG_QUIET:
return LogLevel::Disabled;
case AV_LOG_PANIC:
case AV_LOG_FATAL:
case AV_LOG_ERROR:
return LogLevel::Error;
case AV_LOG_WARNING:
return LogLevel::Warning;
case AV_LOG_INFO:
return LogLevel::Info;
case AV_LOG_DEBUG:
return LogLevel::Debug;
case AV_LOG_VERBOSE:
case AV_LOG_TRACE:
return LogLevel::Verbose;
default:
MOZ_ASSERT_UNREACHABLE("Unhandled log level!");
break;
}
return LogLevel::Disabled;
}
/* static */ void FFmpegLibWrapper::Log(void* aPtr, int aLevel,
const char* aFmt, va_list aArgs) {
LogLevel level = FromLibLogLevel(aLevel);
if (MOZ_LOG_TEST(sFFmpegLibLog, level)) {
nsAutoCString msg;
msg.AppendVprintf(aFmt, aArgs);
MOZ_LOG(sFFmpegLibLog, level, ("[%p] %s", aPtr, msg.get()));
}
}
#ifdef MOZ_WIDGET_GTK
bool FFmpegLibWrapper::IsVAAPIAvailable() {
# define VA_FUNC_LOADED(func) ((func) != nullptr)
return VA_FUNC_LOADED(avcodec_get_hw_config) &&
VA_FUNC_LOADED(av_hwdevice_ctx_alloc) &&
VA_FUNC_LOADED(av_hwdevice_ctx_init) &&
VA_FUNC_LOADED(av_hwdevice_hwconfig_alloc) &&
VA_FUNC_LOADED(av_hwdevice_get_hwframe_constraints) &&
VA_FUNC_LOADED(av_hwframe_constraints_free) &&
VA_FUNC_LOADED(av_buffer_ref) && VA_FUNC_LOADED(av_buffer_unref) &&
VA_FUNC_LOADED(av_hwframe_transfer_get_formats) &&
VA_FUNC_LOADED(av_hwdevice_ctx_create_derived) &&
VA_FUNC_LOADED(av_hwframe_ctx_alloc) && VA_FUNC_LOADED(av_dict_set) &&
VA_FUNC_LOADED(av_dict_free) && VA_FUNC_LOADED(avcodec_get_name) &&
VA_FUNC_LOADED(av_get_pix_fmt_string) &&
VALibWrapper::IsVAAPIAvailable();
}
#endif
} // namespace mozilla