422 lines
12 KiB
C++
422 lines
12 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 "DecoderTraits.h"
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#include "MediaContentType.h"
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#include "MediaDecoder.h"
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#include "nsCharSeparatedTokenizer.h"
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#include "nsMimeTypes.h"
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#include "mozilla/Preferences.h"
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#include "OggDecoder.h"
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#include "OggDemuxer.h"
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#include "WebMDecoder.h"
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#include "WebMDemuxer.h"
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#ifdef MOZ_FMP4
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#include "MP4Decoder.h"
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#include "MP4Demuxer.h"
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#endif
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#include "MediaFormatReader.h"
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#include "MP3Decoder.h"
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#include "MP3Demuxer.h"
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#include "WaveDecoder.h"
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#include "WaveDemuxer.h"
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#include "ADTSDecoder.h"
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#include "ADTSDemuxer.h"
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#include "FlacDecoder.h"
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#include "FlacDemuxer.h"
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#include "nsPluginHost.h"
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#include "MediaPrefs.h"
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namespace mozilla
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{
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template <class String>
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static bool
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CodecListContains(char const *const * aCodecs, const String& aCodec)
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{
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for (int32_t i = 0; aCodecs[i]; ++i) {
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if (aCodec.EqualsASCII(aCodecs[i]))
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return true;
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}
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return false;
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}
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static bool
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IsOggSupportedType(const nsACString& aType,
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const nsAString& aCodecs = EmptyString())
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{
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return OggDecoder::CanHandleMediaType(aType, aCodecs);
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}
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static bool
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IsOggTypeAndEnabled(const nsACString& aType)
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{
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return IsOggSupportedType(aType);
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}
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static bool
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IsWebMSupportedType(const nsACString& aType,
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const nsAString& aCodecs = EmptyString())
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{
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return WebMDecoder::CanHandleMediaType(aType, aCodecs);
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}
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/* static */ bool
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DecoderTraits::IsWebMTypeAndEnabled(const nsACString& aType)
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{
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return IsWebMSupportedType(aType);
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}
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/* static */ bool
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DecoderTraits::IsWebMAudioType(const nsACString& aType)
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{
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return aType.EqualsASCII("audio/webm");
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}
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#ifdef MOZ_FMP4
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static bool
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IsMP4SupportedType(const MediaContentType& aParsedType,
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DecoderDoctorDiagnostics* aDiagnostics)
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{
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return MP4Decoder::CanHandleMediaType(aParsedType, aDiagnostics);
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}
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static bool
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IsMP4SupportedType(const nsACString& aType,
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DecoderDoctorDiagnostics* aDiagnostics)
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{
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MediaContentType contentType{aType};
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return IsMP4SupportedType(contentType, aDiagnostics);
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}
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#endif
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/* static */ bool
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DecoderTraits::IsMP4TypeAndEnabled(const nsACString& aType,
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DecoderDoctorDiagnostics* aDiagnostics)
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{
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#ifdef MOZ_FMP4
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return IsMP4SupportedType(aType, aDiagnostics);
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#else
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return false;
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#endif
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}
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static bool
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IsMP3SupportedType(const nsACString& aType,
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const nsAString& aCodecs = EmptyString())
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{
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return MP3Decoder::CanHandleMediaType(aType, aCodecs);
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}
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static bool
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IsAACSupportedType(const nsACString& aType,
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const nsAString& aCodecs = EmptyString())
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{
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return ADTSDecoder::CanHandleMediaType(aType, aCodecs);
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}
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static bool
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IsWaveSupportedType(const nsACString& aType,
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const nsAString& aCodecs = EmptyString())
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{
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return WaveDecoder::CanHandleMediaType(aType, aCodecs);
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}
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static bool
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IsFlacSupportedType(const nsACString& aType,
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const nsAString& aCodecs = EmptyString())
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{
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return FlacDecoder::CanHandleMediaType(aType, aCodecs);
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}
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static
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CanPlayStatus
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CanHandleCodecsType(const MediaContentType& aType,
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DecoderDoctorDiagnostics* aDiagnostics)
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{
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MOZ_ASSERT(aType.IsValid());
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// We should have been given a codecs string, though it may be empty.
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MOZ_ASSERT(aType.HaveCodecs());
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char const* const* codecList = nullptr;
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if (IsOggTypeAndEnabled(aType.GetMIMEType())) {
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if (IsOggSupportedType(aType.GetMIMEType(), aType.GetCodecs())) {
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return CANPLAY_YES;
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} else {
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// We can only reach this position if a particular codec was requested,
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// ogg is supported and working: the codec must be invalid.
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return CANPLAY_NO;
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}
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}
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if (IsWaveSupportedType(aType.GetMIMEType())) {
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if (IsWaveSupportedType(aType.GetMIMEType(), aType.GetCodecs())) {
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return CANPLAY_YES;
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} else {
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// We can only reach this position if a particular codec was requested,
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// ogg is supported and working: the codec must be invalid.
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return CANPLAY_NO;
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}
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}
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#if !defined(MOZ_OMX_WEBM_DECODER)
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if (DecoderTraits::IsWebMTypeAndEnabled(aType.GetMIMEType())) {
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if (IsWebMSupportedType(aType.GetMIMEType(), aType.GetCodecs())) {
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return CANPLAY_YES;
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} else {
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// We can only reach this position if a particular codec was requested,
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// webm is supported and working: the codec must be invalid.
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return CANPLAY_NO;
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}
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}
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#endif
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#ifdef MOZ_FMP4
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if (DecoderTraits::IsMP4TypeAndEnabled(aType.GetMIMEType(), aDiagnostics)) {
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if (IsMP4SupportedType(aType, aDiagnostics)) {
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return CANPLAY_YES;
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} else {
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// We can only reach this position if a particular codec was requested,
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// fmp4 is supported and working: the codec must be invalid.
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return CANPLAY_NO;
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}
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}
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#endif
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if (IsMP3SupportedType(aType.GetMIMEType(), aType.GetCodecs())) {
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return CANPLAY_YES;
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}
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if (IsAACSupportedType(aType.GetMIMEType(), aType.GetCodecs())) {
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return CANPLAY_YES;
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}
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if (IsFlacSupportedType(aType.GetMIMEType(), aType.GetCodecs())) {
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return CANPLAY_YES;
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}
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if (!codecList) {
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return CANPLAY_MAYBE;
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}
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// See http://www.rfc-editor.org/rfc/rfc4281.txt for the description
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// of the 'codecs' parameter
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nsCharSeparatedTokenizer tokenizer(aType.GetCodecs(), ',');
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bool expectMoreTokens = false;
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while (tokenizer.hasMoreTokens()) {
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const nsSubstring& token = tokenizer.nextToken();
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if (!CodecListContains(codecList, token)) {
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// Totally unsupported codec
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return CANPLAY_NO;
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}
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expectMoreTokens = tokenizer.separatorAfterCurrentToken();
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}
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if (expectMoreTokens) {
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// Last codec name was empty
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return CANPLAY_NO;
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}
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return CANPLAY_YES;
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}
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static
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CanPlayStatus
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CanHandleMediaType(const MediaContentType& aType,
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DecoderDoctorDiagnostics* aDiagnostics)
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{
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MOZ_ASSERT(NS_IsMainThread());
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if (aType.HaveCodecs()) {
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CanPlayStatus result = CanHandleCodecsType(aType, aDiagnostics);
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if (result == CANPLAY_NO || result == CANPLAY_YES) {
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return result;
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}
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}
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if (IsOggTypeAndEnabled(aType.GetMIMEType())) {
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return CANPLAY_MAYBE;
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}
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if (IsWaveSupportedType(aType.GetMIMEType())) {
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return CANPLAY_MAYBE;
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}
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if (DecoderTraits::IsMP4TypeAndEnabled(aType.GetMIMEType(), aDiagnostics)) {
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return CANPLAY_MAYBE;
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}
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#if !defined(MOZ_OMX_WEBM_DECODER)
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if (DecoderTraits::IsWebMTypeAndEnabled(aType.GetMIMEType())) {
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return CANPLAY_MAYBE;
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}
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#endif
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if (IsMP3SupportedType(aType.GetMIMEType())) {
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return CANPLAY_MAYBE;
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}
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if (IsAACSupportedType(aType.GetMIMEType())) {
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return CANPLAY_MAYBE;
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}
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if (IsFlacSupportedType(aType.GetMIMEType())) {
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return CANPLAY_MAYBE;
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}
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return CANPLAY_NO;
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}
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/* static */
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CanPlayStatus
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DecoderTraits::CanHandleContentType(const MediaContentType& aContentType,
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DecoderDoctorDiagnostics* aDiagnostics)
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{
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if (!aContentType.IsValid()) {
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return CANPLAY_NO;
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}
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return CanHandleMediaType(aContentType, aDiagnostics);
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}
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/* static */
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bool DecoderTraits::ShouldHandleMediaType(const char* aMIMEType,
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DecoderDoctorDiagnostics* aDiagnostics)
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{
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if (IsWaveSupportedType(nsDependentCString(aMIMEType))) {
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// We should not return true for Wave types, since there are some
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// Wave codecs actually in use in the wild that we don't support, and
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// we should allow those to be handled by plugins or helper apps.
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// Furthermore people can play Wave files on most platforms by other
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// means.
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return false;
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}
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// If an external plugin which can handle quicktime video is available
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// (and not disabled), prefer it over native playback as there several
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// codecs found in the wild that we do not handle.
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if (nsDependentCString(aMIMEType).EqualsASCII("video/quicktime")) {
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RefPtr<nsPluginHost> pluginHost = nsPluginHost::GetInst();
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if (pluginHost &&
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pluginHost->HavePluginForType(nsDependentCString(aMIMEType))) {
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return false;
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}
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}
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MediaContentType parsed{nsDependentCString(aMIMEType)};
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return CanHandleMediaType(parsed, aDiagnostics)
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!= CANPLAY_NO;
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}
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// Instantiates but does not initialize decoder.
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static
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already_AddRefed<MediaDecoder>
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InstantiateDecoder(const nsACString& aType,
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MediaDecoderOwner* aOwner,
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DecoderDoctorDiagnostics* aDiagnostics)
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{
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MOZ_ASSERT(NS_IsMainThread());
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RefPtr<MediaDecoder> decoder;
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#ifdef MOZ_FMP4
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if (IsMP4SupportedType(aType, aDiagnostics)) {
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decoder = new MP4Decoder(aOwner);
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return decoder.forget();
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}
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#endif
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if (IsMP3SupportedType(aType)) {
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decoder = new MP3Decoder(aOwner);
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return decoder.forget();
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}
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if (IsAACSupportedType(aType)) {
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decoder = new ADTSDecoder(aOwner);
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return decoder.forget();
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}
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if (IsOggSupportedType(aType)) {
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decoder = new OggDecoder(aOwner);
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return decoder.forget();
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}
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if (IsWaveSupportedType(aType)) {
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decoder = new WaveDecoder(aOwner);
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return decoder.forget();
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}
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if (IsFlacSupportedType(aType)) {
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decoder = new FlacDecoder(aOwner);
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return decoder.forget();
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}
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if (IsWebMSupportedType(aType)) {
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decoder = new WebMDecoder(aOwner);
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return decoder.forget();
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}
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return nullptr;
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}
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/* static */
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already_AddRefed<MediaDecoder>
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DecoderTraits::CreateDecoder(const nsACString& aType,
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MediaDecoderOwner* aOwner,
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DecoderDoctorDiagnostics* aDiagnostics)
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{
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MOZ_ASSERT(NS_IsMainThread());
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return InstantiateDecoder(aType, aOwner, aDiagnostics);
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}
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/* static */
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MediaDecoderReader* DecoderTraits::CreateReader(const nsACString& aType, AbstractMediaDecoder* aDecoder)
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{
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MOZ_ASSERT(NS_IsMainThread());
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MediaDecoderReader* decoderReader = nullptr;
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if (!aDecoder) {
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return decoderReader;
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}
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#ifdef MOZ_FMP4
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if (IsMP4SupportedType(aType, /* DecoderDoctorDiagnostics* */ nullptr)) {
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decoderReader = new MediaFormatReader(aDecoder, new MP4Demuxer(aDecoder->GetResource()));
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} else
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#endif
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if (IsMP3SupportedType(aType)) {
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decoderReader = new MediaFormatReader(aDecoder, new MP3Demuxer(aDecoder->GetResource()));
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} else
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if (IsAACSupportedType(aType)) {
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decoderReader = new MediaFormatReader(aDecoder, new ADTSDemuxer(aDecoder->GetResource()));
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} else
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if (IsWaveSupportedType(aType)) {
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decoderReader = new MediaFormatReader(aDecoder, new WAVDemuxer(aDecoder->GetResource()));
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} else
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if (IsFlacSupportedType(aType)) {
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decoderReader = new MediaFormatReader(aDecoder, new FlacDemuxer(aDecoder->GetResource()));
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} else
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if (IsOggSupportedType(aType)) {
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decoderReader = new MediaFormatReader(aDecoder, new OggDemuxer(aDecoder->GetResource()));
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} else
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if (IsWebMSupportedType(aType)) {
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decoderReader =
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new MediaFormatReader(aDecoder, new WebMDemuxer(aDecoder->GetResource()));
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}
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return decoderReader;
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}
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/* static */
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bool DecoderTraits::IsSupportedInVideoDocument(const nsACString& aType)
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{
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// Forbid playing media in video documents if the user has opted
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// not to, using either the legacy WMF specific pref, or the newer
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// catch-all pref.
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if (!Preferences::GetBool("media.windows-media-foundation.play-stand-alone", true) ||
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!Preferences::GetBool("media.play-stand-alone", true)) {
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return false;
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}
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return
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IsOggSupportedType(aType) ||
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IsWebMSupportedType(aType) ||
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#ifdef MOZ_FMP4
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IsMP4SupportedType(aType, /* DecoderDoctorDiagnostics* */ nullptr) ||
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#endif
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IsMP3SupportedType(aType) ||
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IsAACSupportedType(aType) ||
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IsFlacSupportedType(aType) ||
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false;
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}
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} // namespace mozilla
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