/* * 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_G711_H__#define __AUDIO_G711_H__#include "audio_encoder.h"class CG711AudioEncoder : public CAudioEncoder {public:	CG711AudioEncoder(CAudioProfile *ap, 			  CAudioEncoder *next,			  u_int8_t srcChannels,			  u_int32_t srcSampleRate,			  uint16_t mtu,			  bool realTime = true);	bool Init(void);	MediaType GetFrameType() {		if (m_useULAW) {			return ULAWAUDIOFRAME;		} else {			return ALAWAUDIOFRAME;		}	}	u_int32_t GetSamplesPerFrame();	bool EncodeSamples(		int16_t* pSamples, 		u_int32_t numSamplesPerChannel,		u_int8_t numChannels);	bool GetEncodedFrame(		u_int8_t** ppBuffer, 		u_int32_t* pBufferLength,		u_int32_t* pNumSamplesPerChannel);protected:	void StopEncoder(void);	bool				m_useULAW;	u_int32_t			m_samplesPerFrame;	u_int8_t*			m_pFrameBuffer;	u_int32_t			m_frameBufferLength;};extern audio_encoder_table_t g711_alaw_audio_encoder_table;extern audio_encoder_table_t g711_ulaw_audio_encoder_table;media_desc_t *g711_create_audio_sdp(CAudioProfile *pConfig,				    bool *mpeg4,				    bool *isma_compliant,				    uint8_t *audioProfile,				    uint8_t **audioConfig,				    uint32_t *audioConfigLen);MediaType g711_mp4_fileinfo(CAudioProfile *pConfig,			    bool *mpeg4,			    bool *isma_compliant,			    uint8_t *audioProfile,			    uint8_t **audioConfig,			    uint32_t *audioConfigLen,			    uint8_t *mp4AudioType);bool g711_get_audio_rtp_info(CAudioProfile *pConfig,			       MediaType *audioFrameType,			       uint32_t *audioTimeScale,			       uint8_t *audioPayloadNumber,			       uint8_t *audioPayloadBytesPerPacket,			       uint8_t *audioPayloadBytesPerFrame,			       uint8_t *audioQueueMaxCount,			       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,			       void **ud);#endif /* __AUDIO_G711_H__ */