mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-07 04:05:49 +00:00
169 lines
4.0 KiB
C++
169 lines
4.0 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 "MP4Decoder.h"
|
|
#include "MP4Reader.h"
|
|
#include "MediaDecoderStateMachine.h"
|
|
#include "mozilla/Preferences.h"
|
|
#ifdef MOZ_EME
|
|
#include "mozilla/CDMProxy.h"
|
|
#endif
|
|
#include "prlog.h"
|
|
|
|
#ifdef XP_WIN
|
|
#include "mozilla/WindowsVersion.h"
|
|
#endif
|
|
#ifdef MOZ_FFMPEG
|
|
#include "FFmpegRuntimeLinker.h"
|
|
#endif
|
|
#ifdef MOZ_APPLEMEDIA
|
|
#include "apple/AppleCMLinker.h"
|
|
#include "apple/AppleVTLinker.h"
|
|
#endif
|
|
|
|
namespace mozilla {
|
|
|
|
MediaDecoderStateMachine* MP4Decoder::CreateStateMachine()
|
|
{
|
|
return new MediaDecoderStateMachine(this, new MP4Reader(this));
|
|
}
|
|
|
|
#ifdef MOZ_EME
|
|
nsresult
|
|
MP4Decoder::SetCDMProxy(CDMProxy* aProxy)
|
|
{
|
|
nsresult rv = MediaDecoder::SetCDMProxy(aProxy);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
{
|
|
// The MP4Reader can't decrypt EME content until it has a CDMProxy,
|
|
// and the CDMProxy knows the capabilities of the CDM. The MP4Reader
|
|
// remains in "waiting for resources" state until then.
|
|
CDMCaps::AutoLock caps(aProxy->Capabilites());
|
|
nsRefPtr<nsIRunnable> task(
|
|
NS_NewRunnableMethod(this, &MediaDecoder::NotifyWaitingForResourcesStatusChanged));
|
|
caps.CallOnMainThreadWhenCapsAvailable(task);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
#endif
|
|
|
|
bool
|
|
MP4Decoder::GetSupportedCodecs(const nsACString& aType,
|
|
char const *const ** aCodecList)
|
|
{
|
|
if (!IsEnabled()) {
|
|
return false;
|
|
}
|
|
|
|
// AAC in M4A.
|
|
static char const *const aacAudioCodecs[] = {
|
|
"mp4a.40.2", // AAC-LC
|
|
// TODO: AAC-HE ?
|
|
nullptr
|
|
};
|
|
if (aType.EqualsASCII("audio/mp4") ||
|
|
aType.EqualsASCII("audio/x-m4a")) {
|
|
if (aCodecList) {
|
|
*aCodecList = aacAudioCodecs;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
// H.264 + AAC in MP4.
|
|
static char const *const h264Codecs[] = {
|
|
"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
|
|
"mp4a.40.2", // AAC-LC
|
|
// TODO: There must be more profiles here?
|
|
nullptr
|
|
};
|
|
if (aType.EqualsASCII("video/mp4")) {
|
|
if (aCodecList) {
|
|
*aCodecList = h264Codecs;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static bool
|
|
IsFFmpegAvailable()
|
|
{
|
|
#ifndef MOZ_FFMPEG
|
|
return false;
|
|
#else
|
|
if (!Preferences::GetBool("media.fragmented-mp4.ffmpeg.enabled", false)) {
|
|
return false;
|
|
}
|
|
|
|
// If we can link to FFmpeg, then we can almost certainly play H264 and AAC
|
|
// with it.
|
|
return FFmpegRuntimeLinker::Link();
|
|
#endif
|
|
}
|
|
|
|
static bool
|
|
IsAppleAvailable()
|
|
{
|
|
#ifndef MOZ_APPLEMEDIA
|
|
// Not the right platform.
|
|
return false;
|
|
#else
|
|
if (!Preferences::GetBool("media.apple.mp4.enabled", false)) {
|
|
// Disabled by preference.
|
|
return false;
|
|
}
|
|
// Attempt to load the required frameworks.
|
|
bool haveCoreMedia = AppleCMLinker::Link();
|
|
if (!haveCoreMedia) {
|
|
return false;
|
|
}
|
|
bool haveVideoToolbox = AppleVTLinker::Link();
|
|
if (!haveVideoToolbox) {
|
|
return false;
|
|
}
|
|
// All hurdles cleared!
|
|
return true;
|
|
#endif
|
|
}
|
|
|
|
static bool
|
|
IsGonkMP4DecoderAvailable()
|
|
{
|
|
return Preferences::GetBool("media.fragmented-mp4.gonk.enabled", false);
|
|
}
|
|
|
|
static bool
|
|
HavePlatformMPEGDecoders()
|
|
{
|
|
return Preferences::GetBool("media.fragmented-mp4.use-blank-decoder") ||
|
|
#ifdef XP_WIN
|
|
// We have H.264/AAC platform decoders on Windows Vista and up.
|
|
IsVistaOrLater() ||
|
|
#endif
|
|
IsFFmpegAvailable() ||
|
|
IsAppleAvailable() ||
|
|
IsGonkMP4DecoderAvailable() ||
|
|
// TODO: Other platforms...
|
|
false;
|
|
}
|
|
|
|
/* static */
|
|
bool
|
|
MP4Decoder::IsEnabled()
|
|
{
|
|
return HavePlatformMPEGDecoders() &&
|
|
Preferences::GetBool("media.fragmented-mp4.enabled");
|
|
}
|
|
|
|
} // namespace mozilla
|
|
|