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992114f5fd
MozReview-Commit-ID: 1DUaJWfbL88 --HG-- extra : rebase_source : f4a02736b0385e4be6258a185822f7855d0b0189 extra : intermediate-source : 1faaf4254a2e1ce2c096a8650b66d07c84c7fdbe extra : source : c23fc2cea382627af8ff20ae3edea926eaa6d51a
70 lines
2.0 KiB
C++
70 lines
2.0 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 "mozilla/Preferences.h"
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#include "MediaContainerType.h"
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#include "MediaDecoderStateMachine.h"
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#include "WebMDemuxer.h"
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#include "WebMDecoder.h"
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#include "VideoUtils.h"
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namespace mozilla {
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MediaDecoderStateMachine* WebMDecoder::CreateStateMachine()
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{
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mReader =
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new MediaFormatReader(this, new WebMDemuxer(GetResource()), GetVideoFrameContainer());
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return new MediaDecoderStateMachine(this, mReader);
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}
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/* static */
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bool
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WebMDecoder::IsSupportedType(const MediaContainerType& aContainerType)
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{
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if (!Preferences::GetBool("media.webm.enabled")) {
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return false;
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}
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bool isVideo = aContainerType.Type() == MEDIAMIMETYPE("video/webm");
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if (aContainerType.Type() != MEDIAMIMETYPE("audio/webm") && !isVideo) {
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return false;
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}
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const MediaCodecs& codecs = aContainerType.ExtendedType().Codecs();
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if (codecs.IsEmpty()) {
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// WebM guarantees that the only codecs it contained are vp8, vp9, opus or vorbis.
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return true;
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}
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// Verify that all the codecs specified are ones that we expect that
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// we can play.
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for (const auto& codec : codecs.Range()) {
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if (codec.EqualsLiteral("opus") || codec.EqualsLiteral("vorbis")) {
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continue;
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}
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// Note: Only accept VP8/VP9 in a video container type, not in an audio
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// container type.
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if (isVideo &&
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(codec.EqualsLiteral("vp8") || codec.EqualsLiteral("vp8.0") ||
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codec.EqualsLiteral("vp9") || codec.EqualsLiteral("vp9.0"))) {
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continue;
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}
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// Some unsupported codec.
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return false;
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}
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return true;
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}
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void
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WebMDecoder::GetMozDebugReaderData(nsACString& aString)
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{
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if (mReader) {
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mReader->GetMozDebugReaderData(aString);
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}
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}
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} // namespace mozilla
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