121 lines
3.1 KiB
C++
121 lines
3.1 KiB
C++
/* -*- 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 "mozilla/Preferences.h"
|
|
#ifdef MOZ_AV1
|
|
#include "AOMDecoder.h"
|
|
#endif
|
|
#include "MediaPrefs.h"
|
|
#include "MediaDecoderStateMachine.h"
|
|
#include "WebMDemuxer.h"
|
|
#include "WebMDecoder.h"
|
|
#include "VideoUtils.h"
|
|
#include "nsContentTypeParser.h"
|
|
|
|
namespace mozilla {
|
|
|
|
MediaDecoderStateMachine* WebMDecoder::CreateStateMachine()
|
|
{
|
|
mReader =
|
|
new MediaFormatReader(this, new WebMDemuxer(GetResource()), GetVideoFrameContainer());
|
|
return new MediaDecoderStateMachine(this, mReader);
|
|
}
|
|
|
|
/* static */
|
|
bool
|
|
WebMDecoder::IsEnabled()
|
|
{
|
|
return Preferences::GetBool("media.webm.enabled");
|
|
}
|
|
|
|
/* static */
|
|
bool
|
|
WebMDecoder::CanHandleMediaType(const nsACString& aMIMETypeExcludingCodecs,
|
|
const nsAString& aCodecs)
|
|
{
|
|
if (!IsEnabled()) {
|
|
return false;
|
|
}
|
|
|
|
const bool isWebMAudio = aMIMETypeExcludingCodecs.EqualsASCII("audio/webm");
|
|
const bool isWebMVideo = aMIMETypeExcludingCodecs.EqualsASCII("video/webm");
|
|
const bool isMatroskaAudio = aMIMETypeExcludingCodecs.EqualsASCII("audio/x-matroska") ;
|
|
const bool isMatroskaVideo = aMIMETypeExcludingCodecs.EqualsASCII("video/x-matroska") ;
|
|
|
|
if (!isWebMAudio && !isWebMVideo && !isMatroskaAudio && !isMatroskaVideo) {
|
|
return false;
|
|
}
|
|
|
|
nsTArray<nsCString> codecMimes;
|
|
if (aCodecs.IsEmpty()) {
|
|
// WebM guarantees that the only codecs it contained are vp8, vp9, opus or vorbis.
|
|
return true;
|
|
}
|
|
// Verify that all the codecs specified are ones that we expect that
|
|
// we can play.
|
|
nsTArray<nsString> codecs;
|
|
if (!ParseCodecsString(aCodecs, codecs)) {
|
|
return false;
|
|
}
|
|
for (const nsString& codec : codecs) {
|
|
if (codec.EqualsLiteral("opus") || codec.EqualsLiteral("vorbis")) {
|
|
continue;
|
|
}
|
|
// Note: Only accept VP8/VP9 in a video content type, not in an audio
|
|
// content type.
|
|
if ((isWebMVideo || isMatroskaVideo) &&
|
|
(codec.EqualsLiteral("vp8") || codec.EqualsLiteral("vp8.0") ||
|
|
codec.EqualsLiteral("vp9") || codec.EqualsLiteral("vp9.0"))) {
|
|
|
|
continue;
|
|
}
|
|
#ifdef MOZ_AV1
|
|
if (MediaPrefs::AV1Enabled() && IsAV1CodecString(codec)) {
|
|
continue;
|
|
}
|
|
#endif
|
|
|
|
if (IsH264CodecString(codec)) {
|
|
continue;
|
|
}
|
|
|
|
if (IsAACCodecString(codec)) {
|
|
continue;
|
|
}
|
|
|
|
// Some unsupported codec.
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/* static */ bool
|
|
WebMDecoder::CanHandleMediaType(const nsAString& aContentType)
|
|
{
|
|
nsContentTypeParser parser(aContentType);
|
|
nsAutoString mimeType;
|
|
nsresult rv = parser.GetType(mimeType);
|
|
if (NS_FAILED(rv)) {
|
|
return false;
|
|
}
|
|
nsString codecs;
|
|
parser.GetParameter("codecs", codecs);
|
|
|
|
return CanHandleMediaType(NS_ConvertUTF16toUTF8(mimeType),
|
|
codecs);
|
|
}
|
|
|
|
void
|
|
WebMDecoder::GetMozDebugReaderData(nsAString& aString)
|
|
{
|
|
if (mReader) {
|
|
mReader->GetMozDebugReaderData(aString);
|
|
}
|
|
}
|
|
|
|
} // namespace mozilla
|
|
|