diff options
Diffstat (limited to 'dom/media/platforms/ffmpeg/FFmpegRuntimeLinker.cpp')
| -rw-r--r-- | dom/media/platforms/ffmpeg/FFmpegRuntimeLinker.cpp | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/dom/media/platforms/ffmpeg/FFmpegRuntimeLinker.cpp b/dom/media/platforms/ffmpeg/FFmpegRuntimeLinker.cpp new file mode 100644 index 0000000000..7716162e07 --- /dev/null +++ b/dom/media/platforms/ffmpeg/FFmpegRuntimeLinker.cpp @@ -0,0 +1,199 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim:set ts=2 sw=2 sts=2 et cindent: */ +/* 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 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "FFmpegRuntimeLinker.h" +#include "FFmpegLibWrapper.h" +#include "mozilla/ArrayUtils.h" +#include "FFmpegLog.h" +#include "prlink.h" + +namespace mozilla { + +FFmpegRuntimeLinker::LinkStatus FFmpegRuntimeLinker::sLinkStatus = + LinkStatus_INIT; +const char* FFmpegRuntimeLinker::sLinkStatusLibraryName = ""; + +template <int V> +class FFmpegDecoderModule { + public: + static already_AddRefed<PlatformDecoderModule> Create(FFmpegLibWrapper*); +}; + +static FFmpegLibWrapper sLibAV; + +static const char* sLibs[] = { +// clang-format off +#if defined(XP_DARWIN) + "libavcodec.60.dylib", + "libavcodec.59.dylib", + "libavcodec.58.dylib", + "libavcodec.57.dylib", + "libavcodec.56.dylib", + "libavcodec.55.dylib", + "libavcodec.54.dylib", + "libavcodec.53.dylib", +#elif defined(XP_OPENBSD) + "libavcodec.so", // OpenBSD hardly controls the major/minor library version + // of ffmpeg and update it regulary on ABI/API changes +#else + "libavcodec.so.60", + "libavcodec.so.59", + "libavcodec.so.58", + "libavcodec-ffmpeg.so.58", + "libavcodec-ffmpeg.so.57", + "libavcodec-ffmpeg.so.56", + "libavcodec.so.57", + "libavcodec.so.56", + "libavcodec.so.55", + "libavcodec.so.54", + "libavcodec.so.53", +#endif + // clang-format on +}; + +/* static */ +bool FFmpegRuntimeLinker::Init() { + if (sLinkStatus != LinkStatus_INIT) { + return sLinkStatus == LinkStatus_SUCCEEDED; + } + +#ifdef MOZ_WAYLAND + sLibAV.LinkVAAPILibs(); +#endif + + // While going through all possible libs, this status will be updated with a + // more precise error if possible. + sLinkStatus = LinkStatus_NOT_FOUND; + + for (size_t i = 0; i < ArrayLength(sLibs); i++) { + const char* lib = sLibs[i]; + PRLibSpec lspec; + lspec.type = PR_LibSpec_Pathname; + lspec.value.pathname = lib; + sLibAV.mAVCodecLib = + PR_LoadLibraryWithFlags(lspec, PR_LD_NOW | PR_LD_LOCAL); + if (sLibAV.mAVCodecLib) { + sLibAV.mAVUtilLib = sLibAV.mAVCodecLib; + switch (sLibAV.Link()) { + case FFmpegLibWrapper::LinkResult::Success: + sLinkStatus = LinkStatus_SUCCEEDED; + sLinkStatusLibraryName = lib; + return true; + case FFmpegLibWrapper::LinkResult::NoProvidedLib: + MOZ_ASSERT_UNREACHABLE("Incorrectly-setup sLibAV"); + break; + case FFmpegLibWrapper::LinkResult::NoAVCodecVersion: + if (sLinkStatus > LinkStatus_INVALID_CANDIDATE) { + sLinkStatus = LinkStatus_INVALID_CANDIDATE; + sLinkStatusLibraryName = lib; + } + break; + case FFmpegLibWrapper::LinkResult::CannotUseLibAV57: + if (sLinkStatus > LinkStatus_UNUSABLE_LIBAV57) { + sLinkStatus = LinkStatus_UNUSABLE_LIBAV57; + sLinkStatusLibraryName = lib; + } + break; + case FFmpegLibWrapper::LinkResult::BlockedOldLibAVVersion: + if (sLinkStatus > LinkStatus_OBSOLETE_LIBAV) { + sLinkStatus = LinkStatus_OBSOLETE_LIBAV; + sLinkStatusLibraryName = lib; + } + break; + case FFmpegLibWrapper::LinkResult::UnknownFutureLibAVVersion: + case FFmpegLibWrapper::LinkResult::MissingLibAVFunction: + if (sLinkStatus > LinkStatus_INVALID_LIBAV_CANDIDATE) { + sLinkStatus = LinkStatus_INVALID_LIBAV_CANDIDATE; + sLinkStatusLibraryName = lib; + } + break; + case FFmpegLibWrapper::LinkResult::UnknownFutureFFMpegVersion: + case FFmpegLibWrapper::LinkResult::MissingFFMpegFunction: + if (sLinkStatus > LinkStatus_INVALID_FFMPEG_CANDIDATE) { + sLinkStatus = LinkStatus_INVALID_FFMPEG_CANDIDATE; + sLinkStatusLibraryName = lib; + } + break; + case FFmpegLibWrapper::LinkResult::UnknownOlderFFMpegVersion: + if (sLinkStatus > LinkStatus_OBSOLETE_FFMPEG) { + sLinkStatus = LinkStatus_OBSOLETE_FFMPEG; + sLinkStatusLibraryName = lib; + } + break; + } + } + } + + FFMPEG_LOG("H264/AAC codecs unsupported without ["); + for (size_t i = 0; i < ArrayLength(sLibs); i++) { + FFMPEG_LOG("%s %s", i ? "," : " ", sLibs[i]); + } + FFMPEG_LOG(" ]\n"); + + return false; +} + +/* static */ +already_AddRefed<PlatformDecoderModule> FFmpegRuntimeLinker::Create() { + if (!Init()) { + return nullptr; + } + RefPtr<PlatformDecoderModule> module; + switch (sLibAV.mVersion) { + case 53: + module = FFmpegDecoderModule<53>::Create(&sLibAV); + break; + case 54: + module = FFmpegDecoderModule<54>::Create(&sLibAV); + break; + case 55: + case 56: + module = FFmpegDecoderModule<55>::Create(&sLibAV); + break; + case 57: + module = FFmpegDecoderModule<57>::Create(&sLibAV); + break; + case 58: + module = FFmpegDecoderModule<58>::Create(&sLibAV); + break; + case 59: + module = FFmpegDecoderModule<59>::Create(&sLibAV); + break; + case 60: + module = FFmpegDecoderModule<60>::Create(&sLibAV); + break; + default: + module = nullptr; + } + return module.forget(); +} + +/* static */ const char* FFmpegRuntimeLinker::LinkStatusString() { + switch (sLinkStatus) { + case LinkStatus_INIT: + return "Libavcodec not initialized yet"; + case LinkStatus_SUCCEEDED: + return "Libavcodec linking succeeded"; + case LinkStatus_INVALID_FFMPEG_CANDIDATE: + return "Invalid FFMpeg libavcodec candidate"; + case LinkStatus_UNUSABLE_LIBAV57: + return "Unusable LibAV's libavcodec 57"; + case LinkStatus_INVALID_LIBAV_CANDIDATE: + return "Invalid LibAV libavcodec candidate"; + case LinkStatus_OBSOLETE_FFMPEG: + return "Obsolete FFMpeg libavcodec candidate"; + case LinkStatus_OBSOLETE_LIBAV: + return "Obsolete LibAV libavcodec candidate"; + case LinkStatus_INVALID_CANDIDATE: + return "Invalid libavcodec candidate"; + case LinkStatus_NOT_FOUND: + return "Libavcodec not found"; + } + MOZ_ASSERT_UNREACHABLE("Unknown sLinkStatus value"); + return "?"; +} + +} // namespace mozilla |