gecko/content/media/omx/MediaOmxReader.h
Thomas Zimmermann 5fa26f0ddd Bug 831224: Parse MP3 frame headers in OmxDecoder, r=padenot
On FirefoxOS, the Android libraries estimate the duration of MP3 streams
by examining the first MP3 frame header. This only works for streams with
constant bit rate. For streams with variable bit rate, a too short or too
long duration is computed.

This patch adds support for parsing MP3 frame headers. The decoder handles
file streams by reading them at once at the beginning and parsing them
immediately. Network streams are updated when a new fragment arrives.

--HG--
extra : rebase_source : bffb9447a5fdba4145e83f5aeb3c2accfb7872d6
2013-01-24 13:38:32 +01:00

77 lines
1.9 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/. */
#if !defined(MediaOmxReader_h_)
#define MediaOmxReader_h_
#include "MediaResource.h"
#include "MediaDecoderReader.h"
#include <ui/GraphicBuffer.h>
namespace android {
class OmxDecoder;
}
namespace mozilla {
namespace dom {
class TimeRanges;
}
class AbstractMediaDecoder;
class MediaOmxReader : public MediaDecoderReader
{
nsCString mType;
android::sp<android::OmxDecoder> mOmxDecoder;
bool mHasVideo;
bool mHasAudio;
nsIntRect mPicture;
nsIntSize mInitialFrame;
int64_t mVideoSeekTimeUs;
int64_t mAudioSeekTimeUs;
int32_t mSkipCount;
public:
MediaOmxReader(AbstractMediaDecoder* aDecoder);
~MediaOmxReader();
virtual nsresult Init(MediaDecoderReader* aCloneDonor);
virtual nsresult ResetDecode();
virtual void NotifyDataArrived(const char* aBuffer, uint32_t aLength, int64_t aOffset);
virtual bool DecodeAudioData();
virtual bool DecodeVideoFrame(bool &aKeyframeSkip,
int64_t aTimeThreshold);
virtual bool HasAudio()
{
return mHasAudio;
}
virtual bool HasVideo()
{
return mHasVideo;
}
virtual bool IsWaitingMediaResources();
virtual bool IsDormantNeeded();
virtual void ReleaseMediaResources();
virtual nsresult ReadMetadata(VideoInfo* aInfo,
MetadataTags** aTags);
virtual nsresult Seek(int64_t aTime, int64_t aStartTime, int64_t aEndTime, int64_t aCurrentTime);
virtual nsresult GetBuffered(mozilla::dom::TimeRanges* aBuffered, int64_t aStartTime);
virtual void OnDecodeThreadStart() MOZ_OVERRIDE;
virtual void OnDecodeThreadFinish() MOZ_OVERRIDE;
};
} // namespace mozilla
#endif