275 lines
8.3 KiB
C++
275 lines
8.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "FFmpegLibWrapper.h"
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#include "FFmpegLog.h"
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#include "FFmpegRuntimeLinker.h"
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#include "mozilla/ArrayUtils.h"
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#include "prlink.h"
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namespace mozilla {
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FFmpegRuntimeLinker::LinkStatus FFmpegRuntimeLinker::sLinkStatus =
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LinkStatus_INIT;
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const char* FFmpegRuntimeLinker::sLinkStatusLibraryName = "";
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template <int V>
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class FFmpegDecoderModule {
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public:
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static void Init(FFmpegLibWrapper*);
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static already_AddRefed<PlatformDecoderModule> Create(FFmpegLibWrapper*);
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};
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template <int V>
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class FFmpegEncoderModule {
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public:
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static already_AddRefed<PlatformEncoderModule> Create(FFmpegLibWrapper*);
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};
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static FFmpegLibWrapper sLibAV;
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static const char* sLibs[] = {
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// clang-format off
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#if defined(XP_DARWIN)
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"libavcodec.61.dylib",
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"libavcodec.60.dylib",
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"libavcodec.59.dylib",
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"libavcodec.58.dylib",
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"libavcodec.57.dylib",
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"libavcodec.56.dylib",
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"libavcodec.55.dylib",
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"libavcodec.54.dylib",
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"libavcodec.53.dylib",
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#elif defined(XP_OPENBSD)
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"libavcodec.so", // OpenBSD hardly controls the major/minor library version
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// of ffmpeg and update it regulary on ABI/API changes
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#else
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"libavcodec.so.61",
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"libavcodec.so.60",
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"libavcodec.so.59",
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"libavcodec.so.58",
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"libavcodec-ffmpeg.so.58",
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"libavcodec-ffmpeg.so.57",
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"libavcodec-ffmpeg.so.56",
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"libavcodec.so.57",
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"libavcodec.so.56",
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"libavcodec.so.55",
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"libavcodec.so.54",
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"libavcodec.so.53",
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#endif
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// clang-format on
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};
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/* static */
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bool FFmpegRuntimeLinker::Init() {
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if (sLinkStatus != LinkStatus_INIT) {
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return sLinkStatus == LinkStatus_SUCCEEDED;
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}
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// While going through all possible libs, this status will be updated with a
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// more precise error if possible.
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sLinkStatus = LinkStatus_NOT_FOUND;
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for (size_t i = 0; i < std::size(sLibs); i++) {
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const char* lib = sLibs[i];
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PRLibSpec lspec;
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lspec.type = PR_LibSpec_Pathname;
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lspec.value.pathname = lib;
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sLibAV.mAVCodecLib =
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PR_LoadLibraryWithFlags(lspec, PR_LD_NOW | PR_LD_LOCAL);
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if (sLibAV.mAVCodecLib) {
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sLibAV.mAVUtilLib = sLibAV.mAVCodecLib;
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FFmpegLibWrapper::LinkResult res = sLibAV.Link();
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switch (res) {
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case FFmpegLibWrapper::LinkResult::Success:
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sLinkStatus = LinkStatus_SUCCEEDED;
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sLinkStatusLibraryName = lib;
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switch (sLibAV.mVersion) {
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case 53:
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FFmpegDecoderModule<53>::Init(&sLibAV);
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break;
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case 54:
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FFmpegDecoderModule<54>::Init(&sLibAV);
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break;
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case 55:
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case 56:
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FFmpegDecoderModule<55>::Init(&sLibAV);
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break;
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case 57:
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FFmpegDecoderModule<57>::Init(&sLibAV);
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break;
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case 58:
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FFmpegDecoderModule<58>::Init(&sLibAV);
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break;
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case 59:
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FFmpegDecoderModule<59>::Init(&sLibAV);
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break;
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case 60:
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FFmpegDecoderModule<60>::Init(&sLibAV);
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break;
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case 61:
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FFmpegDecoderModule<61>::Init(&sLibAV);
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break;
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}
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return true;
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case FFmpegLibWrapper::LinkResult::NoProvidedLib:
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MOZ_ASSERT_UNREACHABLE("Incorrectly-setup sLibAV");
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break;
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case FFmpegLibWrapper::LinkResult::NoAVCodecVersion:
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if (sLinkStatus > LinkStatus_INVALID_CANDIDATE) {
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sLinkStatus = LinkStatus_INVALID_CANDIDATE;
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sLinkStatusLibraryName = lib;
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}
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break;
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case FFmpegLibWrapper::LinkResult::CannotUseLibAV57:
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if (sLinkStatus > LinkStatus_UNUSABLE_LIBAV57) {
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sLinkStatus = LinkStatus_UNUSABLE_LIBAV57;
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sLinkStatusLibraryName = lib;
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}
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break;
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case FFmpegLibWrapper::LinkResult::BlockedOldLibAVVersion:
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if (sLinkStatus > LinkStatus_OBSOLETE_LIBAV) {
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sLinkStatus = LinkStatus_OBSOLETE_LIBAV;
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sLinkStatusLibraryName = lib;
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}
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break;
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case FFmpegLibWrapper::LinkResult::UnknownFutureLibAVVersion:
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case FFmpegLibWrapper::LinkResult::MissingLibAVFunction:
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if (sLinkStatus > LinkStatus_INVALID_LIBAV_CANDIDATE) {
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sLinkStatus = LinkStatus_INVALID_LIBAV_CANDIDATE;
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sLinkStatusLibraryName = lib;
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}
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break;
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case FFmpegLibWrapper::LinkResult::UnknownFutureFFMpegVersion:
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case FFmpegLibWrapper::LinkResult::MissingFFMpegFunction:
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if (sLinkStatus > LinkStatus_INVALID_FFMPEG_CANDIDATE) {
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sLinkStatus = LinkStatus_INVALID_FFMPEG_CANDIDATE;
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sLinkStatusLibraryName = lib;
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}
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break;
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case FFmpegLibWrapper::LinkResult::UnknownOlderFFMpegVersion:
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if (sLinkStatus > LinkStatus_OBSOLETE_FFMPEG) {
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sLinkStatus = LinkStatus_OBSOLETE_FFMPEG;
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sLinkStatusLibraryName = lib;
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}
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break;
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}
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FFMPEGP_LOG("Failed to link %s: %s", lib,
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FFmpegLibWrapper::EnumValueToString(res));
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}
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}
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FFMPEGV_LOG("H264/AAC codecs unsupported without [");
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for (size_t i = 0; i < std::size(sLibs); i++) {
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FFMPEGV_LOG("%s %s", i ? "," : " ", sLibs[i]);
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}
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FFMPEGV_LOG(" ]\n");
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return false;
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}
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/* static */
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already_AddRefed<PlatformDecoderModule> FFmpegRuntimeLinker::CreateDecoder() {
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if (!Init()) {
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return nullptr;
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}
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RefPtr<PlatformDecoderModule> module;
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switch (sLibAV.mVersion) {
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case 53:
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module = FFmpegDecoderModule<53>::Create(&sLibAV);
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break;
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case 54:
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module = FFmpegDecoderModule<54>::Create(&sLibAV);
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break;
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case 55:
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case 56:
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module = FFmpegDecoderModule<55>::Create(&sLibAV);
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break;
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case 57:
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module = FFmpegDecoderModule<57>::Create(&sLibAV);
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break;
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case 58:
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module = FFmpegDecoderModule<58>::Create(&sLibAV);
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break;
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case 59:
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module = FFmpegDecoderModule<59>::Create(&sLibAV);
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break;
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case 60:
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module = FFmpegDecoderModule<60>::Create(&sLibAV);
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break;
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case 61:
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module = FFmpegDecoderModule<61>::Create(&sLibAV);
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break;
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default:
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module = nullptr;
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}
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return module.forget();
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}
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/* static */
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already_AddRefed<PlatformEncoderModule> FFmpegRuntimeLinker::CreateEncoder() {
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if (!Init()) {
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return nullptr;
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}
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RefPtr<PlatformEncoderModule> module;
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switch (sLibAV.mVersion) {
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case 53:
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module = FFmpegEncoderModule<53>::Create(&sLibAV);
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break;
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case 54:
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module = FFmpegEncoderModule<54>::Create(&sLibAV);
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break;
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case 55:
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case 56:
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module = FFmpegEncoderModule<55>::Create(&sLibAV);
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break;
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case 57:
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module = FFmpegEncoderModule<57>::Create(&sLibAV);
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break;
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case 58:
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module = FFmpegEncoderModule<58>::Create(&sLibAV);
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break;
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case 59:
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module = FFmpegEncoderModule<59>::Create(&sLibAV);
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break;
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case 60:
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module = FFmpegEncoderModule<60>::Create(&sLibAV);
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break;
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case 61:
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module = FFmpegEncoderModule<61>::Create(&sLibAV);
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break;
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default:
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module = nullptr;
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}
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return module.forget();
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}
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/* static */ const char* FFmpegRuntimeLinker::LinkStatusString() {
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switch (sLinkStatus) {
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case LinkStatus_INIT:
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return "Libavcodec not initialized yet";
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case LinkStatus_SUCCEEDED:
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return "Libavcodec linking succeeded";
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case LinkStatus_INVALID_FFMPEG_CANDIDATE:
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return "Invalid FFMpeg libavcodec candidate";
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case LinkStatus_UNUSABLE_LIBAV57:
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return "Unusable LibAV's libavcodec 57";
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case LinkStatus_INVALID_LIBAV_CANDIDATE:
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return "Invalid LibAV libavcodec candidate";
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case LinkStatus_OBSOLETE_FFMPEG:
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return "Obsolete FFMpeg libavcodec candidate";
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case LinkStatus_OBSOLETE_LIBAV:
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return "Obsolete LibAV libavcodec candidate";
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case LinkStatus_INVALID_CANDIDATE:
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return "Invalid libavcodec candidate";
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case LinkStatus_NOT_FOUND:
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return "Libavcodec not found";
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}
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MOZ_ASSERT_UNREACHABLE("Unknown sLinkStatus value");
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return "?";
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}
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} // namespace mozilla
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