michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef __AppleMP3Reader_h__
michael@0: #define __AppleMP3Reader_h__
michael@0: 
michael@0: #include "MediaDecoderReader.h"
michael@0: #include "MP3FrameParser.h"
michael@0: #include "VideoUtils.h"
michael@0: 
michael@0: #include <AudioToolbox/AudioToolbox.h>
michael@0: 
michael@0: namespace mozilla {
michael@0: 
michael@0: class AppleMP3Reader : public MediaDecoderReader
michael@0: {
michael@0: public:
michael@0:   AppleMP3Reader(AbstractMediaDecoder *aDecoder);
michael@0:   virtual ~AppleMP3Reader() MOZ_OVERRIDE;
michael@0: 
michael@0:   virtual nsresult Init(MediaDecoderReader* aCloneDonor) MOZ_OVERRIDE;
michael@0: 
michael@0:   nsresult PushDataToDemuxer();
michael@0: 
michael@0:   virtual bool DecodeAudioData() MOZ_OVERRIDE;
michael@0:   virtual bool DecodeVideoFrame(bool &aKeyframeSkip,
michael@0:                                 int64_t aTimeThreshold) MOZ_OVERRIDE;
michael@0: 
michael@0:   virtual bool HasAudio() MOZ_OVERRIDE;
michael@0:   virtual bool HasVideo() MOZ_OVERRIDE;
michael@0: 
michael@0:   virtual nsresult ReadMetadata(MediaInfo* aInfo,
michael@0:                                 MetadataTags** aTags) MOZ_OVERRIDE;
michael@0: 
michael@0:   virtual nsresult Seek(int64_t aTime,
michael@0:                         int64_t aStartTime,
michael@0:                         int64_t aEndTime,
michael@0:                         int64_t aCurrentTime) MOZ_OVERRIDE;
michael@0: 
michael@0:   void AudioSampleCallback(UInt32 aNumBytes,
michael@0:                            UInt32 aNumPackets,
michael@0:                            const void *aData,
michael@0:                            AudioStreamPacketDescription *aPackets);
michael@0: 
michael@0:   void AudioMetadataCallback(AudioFileStreamID aFileStream,
michael@0:                              AudioFileStreamPropertyID aPropertyID,
michael@0:                              UInt32 *aFlags);
michael@0: 
michael@0:   virtual void NotifyDataArrived(const char* aBuffer,
michael@0:                                  uint32_t aLength,
michael@0:                                  int64_t aOffset) MOZ_OVERRIDE;
michael@0: 
michael@0: private:
michael@0:   void SetupDecoder();
michael@0:   nsresult Read(uint32_t *aNumBytes, char *aData);
michael@0: 
michael@0:   static OSStatus PassthroughInputDataCallback(AudioConverterRef aAudioConverter,
michael@0:                                                UInt32 *aNumDataPackets,
michael@0:                                                AudioBufferList *aData,
michael@0:                                                AudioStreamPacketDescription **aPacketDesc,
michael@0:                                                void *aUserData);
michael@0: 
michael@0:   // Initialisation has to be done in a callback, so we store the result here.
michael@0:   bool mStreamReady;
michael@0: 
michael@0:   // Number of audio samples in an audio packet. Constant over all packets in a
michael@0:   // stream.
michael@0:   UInt32 mAudioFramesPerCompressedPacket;
michael@0:   // Store the next audio frame to be played; so we can keep time when seeking.
michael@0:   UInt64 mCurrentAudioFrame;
michael@0:   UInt32 mAudioChannels;
michael@0:   UInt32 mAudioSampleRate;
michael@0: 
michael@0:   uint64_t mDuration;
michael@0: 
michael@0:   AudioFileStreamID mAudioFileStream;
michael@0:   AudioConverterRef mAudioConverter;
michael@0: 
michael@0:   MP3FrameParser mMP3FrameParser;
michael@0: };
michael@0: 
michael@0: } // namespace mozilla
michael@0: 
michael@0: #endif // __AppleMP3Reader_h__