mpeg4_audio_config.h
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上传用户:sun1608
上传日期:2007-02-02
资源大小:6116k
文件大小:2k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- /*
- * 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. 2001. All Rights Reserved.
- *
- * Contributor(s):
- * Bill May wmay@cisco.com
- */
- #ifndef __MPEG4_AUDIO_CONFIG_H__
- #define __MPEG4_AUDIO_CONFIG_H__
- typedef struct aac_audio_config_t {
- int frame_len_1024;
- } aac_audio_config_t;
- #define CELP_EXCITATION_MODE_RPE 1
- #define CELP_EXCITATION_MODE_MPE 0
- typedef struct celp_audio_config_t {
- int isBaseLayer;
- int isBWSLayer;
- int CELP_BRS_id;
- int NumOfBitsInBuffer;
- int excitation_mode;
- int sample_rate_mode;
- int fine_rate_control;
- int rpe_config;
- int mpe_config;
- int num_enh_layers;
- int bwsm;
- int samples_per_frame;
- } celp_audio_config_t;
- typedef struct mpeg4_audio_config_t {
- unsigned int audio_object_type;
- unsigned int frequency;
- unsigned int channels;
- union {
- aac_audio_config_t aac;
- celp_audio_config_t celp;
- } codec;
- } mpeg4_audio_config_t;
- extern "C" {
- void decode_mpeg4_audio_config(const uint8_t *buffer,
- uint32_t buf_len,
- mpeg4_audio_config_t *mptr);
- int audio_object_type_is_aac(mpeg4_audio_config_t *mptr);
- int audio_object_type_is_celp(mpeg4_audio_config_t *mptr);
- }
- #endif