/* * The contents of this file are subject to the Mozilla Public * License Version 1.1 (the "License"); you may not use this file * except in compliance with the License. You may obtain a copy of * the License at http://www.mozilla.org/MPL/ *  * Software distributed under the License is distributed on an "AS * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or * implied. See the License for the specific language governing * rights and limitations under the License. *  * The Original Code is MPEG4IP. *  * The Initial Developer of the Original Code is Cisco Systems Inc. * Portions created by Cisco Systems Inc. are * Copyright (C) Cisco Systems Inc. 2000-2002.  All Rights Reserved. *  * Contributor(s):  *		Dave Mackie		dmackie@cisco.com */#ifndef __AUDIO_ENCODER_H__#define __AUDIO_ENCODER_H__#include "media_codec.h"#include "media_frame.h"#include <sdp.h>#include <mp4.h>#include "profile_audio.h"#include "resampl.h"#include "encoder_gui_options.h"class CAudioEncoder : public CMediaCodec { public:  CAudioEncoder(CAudioProfile *profile,		CAudioEncoder *next, 		u_int8_t srcChannels,		u_int32_t srcSampleRate,		uint16_t mtu,		bool realTime = true);  virtual u_int32_t GetSamplesPerFrame() = 0;	  virtual bool Init(void) = 0;  void AddRtpDestination (CMediaStream *stream,			  bool disable_ts_offset,			  uint16_t max_ttl,			  in_port_t srcPort = 0) {    AddRtpDestInt(disable_ts_offset, max_ttl,		  stream->GetStringValue(STREAM_AUDIO_DEST_ADDR),		  stream->GetIntegerValue(STREAM_AUDIO_DEST_PORT),		  srcPort);  }; public:  // utility routines  static bool InterleaveStereoSamples(				      int16_t* pLeftBuffer, 				      int16_t* pRightBuffer, 				      u_int32_t numSamplesPerChannel,				      int16_t** ppDstBuffer);  static bool DeinterleaveStereoSamples(					int16_t* pSrcBuffer, 					u_int32_t numSamplesPerChannel,					int16_t** ppLeftBuffer, 					int16_t** ppRightBuffer);   CAudioEncoder *GetNext(void) {    return (CAudioEncoder *)CMediaCodec::GetNext();  }; protected:  int ThreadMain(void);  CAudioProfile *Profile(void) { return (CAudioProfile *)m_pConfig; } ;  void Initialize(void);  virtual bool EncodeSamples(			     int16_t* pSamples, 			     u_int32_t numSamplesPerChannel,			     u_int8_t numChannels) = 0;  virtual bool GetEncodedFrame(			       u_int8_t** ppBuffer, 			       u_int32_t* pBufferLength,			       u_int32_t* pNumSamplesPerChannel) = 0;  CRtpTransmitter *CreateRtpTransmitter(bool disable_ts) {    return new CAudioRtpTransmitter(Profile(), m_mtu, disable_ts);  };  void ProcessAudioFrame(CMediaFrame *frame);  void ResampleAudio(		     const u_int8_t* frameData,		     u_int32_t frameDataLength);  void ForwardEncodedAudioFrames(void);  void DoStopAudio();  // audio utility routines  inline Duration SrcSamplesToTicks(u_int64_t numSamples) {    return (numSamples * TimestampTicks) / m_audioSrcSampleRate;  }  inline Duration DstSamplesToTicks(u_int64_t numSamples) {    return (numSamples * TimestampTicks) / m_audioDstSampleRate;  }  inline u_int32_t SrcTicksToSamples(Duration duration) {    return (duration * m_audioSrcSampleRate) / TimestampTicks;  }  inline u_int32_t DstTicksToSamples(Duration duration) {    return (duration * m_audioDstSampleRate) / TimestampTicks;  }  inline u_int32_t SrcSamplesToBytes(u_int64_t numSamples) {    return (numSamples * m_audioSrcChannels * sizeof(u_int16_t));  }  inline u_int32_t DstSamplesToBytes(u_int64_t numSamples) {    return (numSamples * m_audioDstChannels * sizeof(u_int16_t));  }  inline u_int64_t SrcBytesToSamples(u_int32_t numBytes) {    return (numBytes / (m_audioSrcChannels * sizeof(u_int16_t)));  }  inline u_int64_t DstBytesToSamples(u_int32_t numBytes) {    return (numBytes / (m_audioDstChannels * sizeof(u_int16_t)));  }  void AddSilenceFrame(void);  // Audio encoding variables (timing, etc)	u_int8_t		m_audioSrcChannels;	u_int32_t		m_audioSrcSampleRate;	u_int32_t		m_audioSrcFrameNumber;	// audio resampling info	resample_t              *m_audioResample;	// audio destination info	MediaType		m_audioDstType;	u_int8_t		m_audioDstChannels;	u_int32_t		m_audioDstSampleRate;	u_int16_t		m_audioDstSamplesPerFrame;	u_int64_t		m_audioDstSampleNumber;	u_int32_t		m_audioDstFrameNumber;	// audio encoding info	u_int8_t*		m_audioPreEncodingBuffer;	u_int32_t		m_audioPreEncodingBufferLength;	u_int32_t		m_audioPreEncodingBufferMaxLength;	// audio timing info	Timestamp		m_audioStartTimestamp;	Timestamp               m_audioEncodingStartTimestamp;	Duration		m_audioSrcElapsedDuration;	Duration		m_audioDstElapsedDuration;};void AudioProfileCheck(CAudioProfile *ap);CAudioEncoder* AudioEncoderCreate(CAudioProfile *ap, 				  CAudioEncoder *next,				  u_int8_t srcChannels,				  u_int32_t srcSampleRate,				  uint16_t mtu,				  bool realTime = true);media_desc_t *create_audio_sdp(CAudioProfile *pConfig,			       bool *mpeg4,			       bool *isma_compliant,			       bool *audio_is_3gp,			       uint8_t *audioProfile,			       uint8_t **audioConfig,			       uint32_t *audioConfigLen);MediaType get_audio_mp4_fileinfo(CAudioProfile *pConfig,				 bool *mpeg4,				 bool *isma_compliant,				 uint8_t *audioProfile,				 uint8_t **audioConfig,				 uint32_t *audioConfigLen,				 uint8_t *mp4_audio_type);void create_mp4_audio_hint_track(CAudioProfile *pConfig, 				 MP4FileHandle mp4file,				 MP4TrackId trackId,				 uint16_t mtu);bool get_audio_rtp_info (CAudioProfile *pConfig,			 MediaType *audioFrameType,			 uint32_t *audioTimeScale,			 uint8_t *audioPayloadNumber,			 uint8_t *audioPayloadBytesPerPacket,			 uint8_t *audioPayloadBytesPerFrame,			 uint8_t *audioQueueMaxCount,			 uint8_t *audioiovMaxCount,			 audio_queue_frame_f *audio_queue_frame,			 audio_set_rtp_payload_f *audio_set_rtp_payload,			 audio_set_rtp_header_f *audio_set_header,			 audio_set_rtp_jumbo_frame_f *audio_set_jumbo_frame,			 void **ud);void AudioProfileCheckBase(CAudioProfile *ap);CAudioEncoder* AudioEncoderBaseCreate(CAudioProfile *ap, 				      CAudioEncoder *next, 				      u_int8_t srcChannels,				      u_int32_t srcSampleRate,				      uint16_t mtu,				      bool realTime = true);media_desc_t *create_base_audio_sdp(CAudioProfile *pConfig,				    bool *mpeg4,				    bool *isma_compliant,				    bool *audio_is_3gp,				    uint8_t *audioProfile,				    uint8_t **audioConfig,				    uint32_t *audioConfigLen);MediaType get_base_audio_mp4_fileinfo(CAudioProfile *pConfig,				      bool *mpeg4,				      bool *isma_compliant,				      uint8_t *audioProfile,				      uint8_t **audioConfig,				      uint32_t *audioConfigLen,				      uint8_t *mp4_audio_type);void create_base_mp4_audio_hint_track(CAudioProfile *pConfig, 				      MP4FileHandle mp4file,				      MP4TrackId trackId,				      uint16_t mtu);bool get_base_audio_rtp_info (CAudioProfile *pConfig,			      MediaType *audioFrameType,			      uint32_t *audioTimeScale,			      uint8_t *audioPayloadNumber,			      uint8_t *audioPayloadBytesPerPacket,			      uint8_t *audioPayloadBytesPerFrame,			      uint8_t *audioQueueMaxCount,			      uint8_t *audioiovMaxCount,			      audio_queue_frame_f * audio_queue_frame,			      audio_set_rtp_payload_f *audio_set_rtp_payload,			      audio_set_rtp_header_f *audio_set_header,			      audio_set_rtp_jumbo_frame_f *audio_set_jumbo_frame,			      void **ud);typedef uint32_t *(*bitrates_for_samplerate_f)(uint32_t samplerate, uint8_t chans, uint32_t *ret_size);typedef struct audio_encoder_table_t {  char *dialog_selection_name;  char *audio_encoder;  char *audio_encoding;  const uint32_t *sample_rates;  uint32_t num_sample_rates;  bitrates_for_samplerate_f bitrates_for_samplerate;  uint32_t max_channels;  get_gui_options_list_f get_gui_options;} audio_encoder_table_t;void InitAudioEncoders(void);void AddAudioEncoderTable(audio_encoder_table_t *new_table);extern audio_encoder_table_t **audio_encoder_table;extern uint32_t audio_encoder_table_size;extern const uint32_t allSampleRateTable[];extern const uint32_t allSampleRateTableSize;#endif /* __AUDIO_ENCODER_H__ */