/* static */
bool
MP4Decoder::CanHandleMediaType(const nsACString& aType,
const nsAString& aCodecs,
bool& aOutContainsAAC,
bool& aOutContainsH264,
bool& aOutContainsMP3)
{
if (!IsEnabled()) {
return false;
}
if (aType.EqualsASCII("audio/mp4") || aType.EqualsASCII("audio/x-m4a")) {
return MP4Decoder::CanCreateAACDecoder() &&
(aCodecs.IsEmpty() ||
IsSupportedAudioCodec(aCodecs,
aOutContainsAAC,
aOutContainsMP3));
}
#ifdef MOZ_GONK_MEDIACODEC
if (aType.EqualsASCII(VIDEO_3GPP)) {
return Preferences::GetBool("media.fragmented-mp4.gonk.enabled", false);
}
#endif
if ((!aType.EqualsASCII("video/mp4") && !aType.EqualsASCII("video/x-m4v")) ||
!MP4Decoder::CanCreateH264Decoder()) {
return false;
}
// Verify that all the codecs specifed are ones that we expect that
// we can play.
nsCharSeparatedTokenizer tokenizer(aCodecs, ',');
bool expectMoreTokens = false;
while (tokenizer.hasMoreTokens()) {
const nsSubstring& token = tokenizer.nextToken();
expectMoreTokens = tokenizer.separatorAfterCurrentToken();
if (IsSupportedAudioCodec(token,
aOutContainsAAC,
aOutContainsMP3)) {
continue;
}
if (IsSupportedH264Codec(token)) {
aOutContainsH264 = true;
continue;
}
return false;
}
if (expectMoreTokens) {
// Last codec name was empty
return false;
}
return true;
}
bool
WMFDecoder::CanPlayType(const nsACString& aType,
const nsAString& aCodecs)
{
if (!MediaDecoder::IsWMFEnabled() ||
NS_FAILED(LoadDLLs())) {
return false;
}
// Assume that if LoadDLLs() didn't fail, we can playback the types that
// we know should be supported by Windows Media Foundation.
if ((aType.EqualsASCII("audio/mpeg") || aType.EqualsASCII("audio/mp3")) &&
IsMP3Supported()) {
// Note: We block MP3 playback on Window 7 SP0 since it seems to crash
// in some circumstances.
return !aCodecs.Length() || aCodecs.EqualsASCII("mp3");
}
// AAC-LC or MP3 in M4A.
if (aType.EqualsASCII("audio/mp4") || aType.EqualsASCII("audio/x-m4a")) {
return !aCodecs.Length() ||
aCodecs.EqualsASCII("mp4a.40.2") ||
aCodecs.EqualsASCII("mp3");
}
if (!aType.EqualsASCII("video/mp4")) {
return false;
}
// H.264 + AAC in MP4. Verify that all the codecs specifed are ones that
// we expect that we can play.
nsCharSeparatedTokenizer tokenizer(aCodecs, ',');
bool expectMoreTokens = false;
while (tokenizer.hasMoreTokens()) {
const nsSubstring& token = tokenizer.nextToken();
expectMoreTokens = tokenizer.separatorAfterCurrentToken();
if (token.EqualsASCII("mp4a.40.2") || // AAC-LC
token.EqualsASCII("mp3") ||
IsSupportedH264Codec(token)) {
continue;
}
return false;
}
if (expectMoreTokens) {
// Last codec name was empty
return false;
}
return true;
}
/* static */
bool
MP4Decoder::CanHandleMediaType(const nsACString& aType,
const nsAString& aCodecs,
bool& aOutContainsAAC,
bool& aOutContainsH264,
bool& aOutContainsMP3)
{
if (!IsEnabled()) {
return false;
}
if (aType.EqualsASCII("audio/mp4") || aType.EqualsASCII("audio/x-m4a")) {
return aCodecs.IsEmpty() ||
IsSupportedAudioCodec(aCodecs,
aOutContainsAAC,
aOutContainsMP3);
}
if (!aType.EqualsASCII("video/mp4")) {
return false;
}
// Verify that all the codecs specifed are ones that we expect that
// we can play.
nsCharSeparatedTokenizer tokenizer(aCodecs, ',');
bool expectMoreTokens = false;
while (tokenizer.hasMoreTokens()) {
const nsSubstring& token = tokenizer.nextToken();
expectMoreTokens = tokenizer.separatorAfterCurrentToken();
if (IsSupportedAudioCodec(token,
aOutContainsAAC,
aOutContainsMP3)) {
continue;
}
if (IsSupportedH264Codec(token)) {
aOutContainsH264 = true;
continue;
}
return false;
}
if (expectMoreTokens) {
// Last codec name was empty
return false;
}
return true;
}