?? audio_g711.h
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/* * 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__ */
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