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-rw-r--r--dom/media/platforms/ffmpeg/FFmpegRuntimeLinker.cpp199
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