gecko-dev/content/media/DecoderTraits.cpp

358 lines
7.7 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 "DecoderTraits.h"
#include "MediaDecoder.h"
#include "nsCharSeparatedTokenizer.h"
#ifdef MOZ_MEDIA_PLUGINS
#include "MediaPluginHost.h"
#endif
#ifdef MOZ_GSTREAMER
#include "mozilla/Preferences.h"
#endif
#ifdef MOZ_WMF
#include "WMFDecoder.h"
#endif
namespace mozilla
{
template <class String>
static bool
CodecListContains(char const *const * aCodecs, const String& aCodec)
{
for (int32_t i = 0; aCodecs[i]; ++i) {
if (aCodec.EqualsASCII(aCodecs[i]))
return true;
}
return false;
}
#ifdef MOZ_RAW
static const char* gRawTypes[3] = {
"video/x-raw",
"video/x-raw-yuv",
nullptr
};
static const char* gRawCodecs[1] = {
nullptr
};
/* static */
bool
DecoderTraits::IsRawType(const nsACString& aType)
{
if (!MediaDecoder::IsRawEnabled()) {
return false;
}
return CodecListContains(gRawTypes, aType);
}
#endif
#ifdef MOZ_OGG
// See http://www.rfc-editor.org/rfc/rfc5334.txt for the definitions
// of Ogg media types and codec types
static const char* const gOggTypes[4] = {
"video/ogg",
"audio/ogg",
"application/ogg",
nullptr
};
static char const *const gOggCodecs[3] = {
"vorbis",
"theora",
nullptr
};
static char const *const gOggCodecsWithOpus[4] = {
"vorbis",
"opus",
"theora",
nullptr
};
bool
DecoderTraits::IsOggType(const nsACString& aType)
{
if (!MediaDecoder::IsOggEnabled()) {
return false;
}
return CodecListContains(gOggTypes, aType);
}
#endif
#ifdef MOZ_WAVE
// See http://www.rfc-editor.org/rfc/rfc2361.txt for the definitions
// of WAVE media types and codec types. However, the audio/vnd.wave
// MIME type described there is not used.
static const char* const gWaveTypes[5] = {
"audio/x-wav",
"audio/wav",
"audio/wave",
"audio/x-pn-wav",
nullptr
};
static char const *const gWaveCodecs[2] = {
"1", // Microsoft PCM Format
nullptr
};
bool
DecoderTraits::IsWaveType(const nsACString& aType)
{
if (!MediaDecoder::IsWaveEnabled()) {
return false;
}
return CodecListContains(gWaveTypes, aType);
}
#endif
#ifdef MOZ_WEBM
static const char* const gWebMTypes[3] = {
"video/webm",
"audio/webm",
nullptr
};
static char const *const gWebMCodecs[4] = {
"vp8",
"vp8.0",
"vorbis",
nullptr
};
bool
DecoderTraits::IsWebMType(const nsACString& aType)
{
if (!MediaDecoder::IsWebMEnabled()) {
return false;
}
return CodecListContains(gWebMTypes, aType);
}
#endif
#ifdef MOZ_GSTREAMER
static const char* const gH264Types[4] = {
"video/mp4",
"video/3gpp",
"video/quicktime",
nullptr
};
bool
DecoderTraits::IsGStreamerSupportedType(const nsACString& aMimeType)
{
if (!MediaDecoder::IsGStreamerEnabled())
return false;
if (IsH264Type(aMimeType))
return true;
if (!Preferences::GetBool("media.prefer-gstreamer", false))
return false;
#ifdef MOZ_WEBM
if (IsWebMType(aMimeType))
return true;
#endif
#ifdef MOZ_OGG
if (IsOggType(aMimeType))
return true;
#endif
return false;
}
bool
DecoderTraits::IsH264Type(const nsACString& aType)
{
return CodecListContains(gH264Types, aType);
}
#endif
#ifdef MOZ_WIDGET_GONK
static const char* const gOmxTypes[6] = {
"audio/mpeg",
"audio/mp4",
"video/mp4",
"video/3gpp",
"video/quicktime",
nullptr
};
bool
DecoderTraits::IsOmxSupportedType(const nsACString& aType)
{
if (!MediaDecoder::IsOmxEnabled()) {
return false;
}
return CodecListContains(gOmxTypes, aType);
}
#endif
#if defined(MOZ_GSTREAMER) || defined(MOZ_WIDGET_GONK)
static char const *const gH264Codecs[9] = {
"avc1.42E01E", // H.264 Constrained Baseline Profile Level 3.0
"avc1.42001E", // H.264 Baseline Profile Level 3.0
"avc1.58A01E", // H.264 Extended Profile Level 3.0
"avc1.4D401E", // H.264 Main Profile Level 3.0
"avc1.64001E", // H.264 High Profile Level 3.0
"avc1.64001F", // H.264 High Profile Level 3.1
"mp4v.20.3", // 3GPP
"mp4a.40.2", // AAC-LC
nullptr
};
#endif
#ifdef MOZ_MEDIA_PLUGINS
bool
DecoderTraits::IsMediaPluginsType(const nsACString& aType)
{
if (!MediaDecoder::IsMediaPluginsEnabled()) {
return false;
}
static const char* supportedTypes[] = {
"audio/mpeg", "audio/mp4", "video/mp4", nullptr
};
return CodecListContains(supportedTypes, aType);
}
#endif
#ifdef MOZ_DASH
/* static */
static const char* const gDASHMPDTypes[2] = {
"application/dash+xml",
nullptr
};
/* static */
bool
DecoderTraits::IsDASHMPDType(const nsACString& aType)
{
if (!MediaDecoder::IsDASHEnabled()) {
return false;
}
return CodecListContains(gDASHMPDTypes, aType);
}
#endif
#ifdef MOZ_WMF
bool DecoderTraits::IsWMFSupportedType(const nsACString& aType)
{
return WMFDecoder::GetSupportedCodecs(aType, nullptr);
}
#endif
/* static */
bool DecoderTraits::ShouldHandleMediaType(const char* aMIMEType)
{
#ifdef MOZ_WAVE
if (IsWaveType(nsDependentCString(aMIMEType))) {
// We should not return true for Wave types, since there are some
// Wave codecs actually in use in the wild that we don't support, and
// we should allow those to be handled by plugins or helper apps.
// Furthermore people can play Wave files on most platforms by other
// means.
return false;
}
#endif
return CanHandleMediaType(aMIMEType, false, EmptyString()) != CANPLAY_NO;
}
/* static */
CanPlayStatus
DecoderTraits::CanHandleMediaType(const char* aMIMEType,
bool aHaveRequestedCodecs,
const nsAString& aRequestedCodecs)
{
char const* const* codecList = nullptr;
CanPlayStatus result = CANPLAY_NO;
#ifdef MOZ_RAW
if (IsRawType(nsDependentCString(aMIMEType))) {
codecList = gRawCodecs;
result = CANPLAY_MAYBE;
}
#endif
#ifdef MOZ_OGG
if (IsOggType(nsDependentCString(aMIMEType))) {
codecList = MediaDecoder::IsOpusEnabled() ? gOggCodecsWithOpus : gOggCodecs;
result = CANPLAY_MAYBE;
}
#endif
#ifdef MOZ_WAVE
if (IsWaveType(nsDependentCString(aMIMEType))) {
codecList = gWaveCodecs;
result = CANPLAY_MAYBE;
}
#endif
#ifdef MOZ_WEBM
if (IsWebMType(nsDependentCString(aMIMEType))) {
codecList = gWebMCodecs;
result = CANPLAY_YES;
}
#endif
#ifdef MOZ_DASH
if (IsDASHMPDType(nsDependentCString(aMIMEType))) {
// DASH manifest uses WebM codecs only.
codecList = gWebMCodecs;
result = CANPLAY_YES;
}
#endif
#ifdef MOZ_GSTREAMER
if (IsH264Type(nsDependentCString(aMIMEType))) {
codecList = gH264Codecs;
result = CANPLAY_MAYBE;
}
#endif
#ifdef MOZ_WIDGET_GONK
if (IsOmxSupportedType(nsDependentCString(aMIMEType))) {
codecList = gH264Codecs;
result = CANPLAY_MAYBE;
}
#endif
#ifdef MOZ_WMF
if (WMFDecoder::GetSupportedCodecs(nsDependentCString(aMIMEType), &codecList)) {
result = CANPLAY_MAYBE;
}
#endif
#ifdef MOZ_MEDIA_PLUGINS
if (MediaDecoder::IsMediaPluginsEnabled() &&
GetMediaPluginHost()->FindDecoder(nsDependentCString(aMIMEType), &codecList))
result = CANPLAY_MAYBE;
#endif
if (result == CANPLAY_NO || !aHaveRequestedCodecs) {
return result;
}
// See http://www.rfc-editor.org/rfc/rfc4281.txt for the description
// of the 'codecs' parameter
nsCharSeparatedTokenizer tokenizer(aRequestedCodecs, ',');
bool expectMoreTokens = false;
while (tokenizer.hasMoreTokens()) {
const nsSubstring& token = tokenizer.nextToken();
if (!CodecListContains(codecList, token)) {
// Totally unsupported codec
return CANPLAY_NO;
}
expectMoreTokens = tokenizer.lastTokenEndedWithSeparator();
}
if (expectMoreTokens) {
// Last codec name was empty
return CANPLAY_NO;
}
return CANPLAY_YES;
}
}