mirror of https://github.com/axmolengine/axmol.git
93 lines
2.7 KiB
C
93 lines
2.7 KiB
C
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/*
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* WavHead.h
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*
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* Created on: 2011-1-21
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* Author: Administrator
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*/
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#ifndef WAVHEAD_H_
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#define WAVHEAD_H_
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#include <stdio.h>
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/* WAVE文件头 */
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typedef struct wave_tag
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{
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char ChunkID[5]; // "RIFF"标志
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unsigned long int ChunkSize; // 文件长度(WAVE文件的大小, 不含前8个字节)
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char Format[5]; // "WAVE"标志
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char SubChunk1ID[5];// "fmt "标志
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unsigned long int SubChunk1Size; /*
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* 过渡字节(不定)
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* 16 for PCM. This is the size of the rest of the
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* Subchunk which follows this number.
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*/
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unsigned short int AudioFormat; /*
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* 格式类别(10H为PCM格式的声音数据)
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* PCM=1 (i.e. Linear quantization)
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* Values other than 1 indicate some form of compression.
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*/
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unsigned short int NumChannels; // 通道数(单声道为1, 双声道为2)
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//unsigned short int SampleRate; // 采样率(每秒样本数), 表示每个通道的播放速度
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unsigned long int SampleRate; // 采样率(每秒样本数), 表示每个通道的播放速度
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unsigned long int ByteRate; /*
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* 波形音频数据传输速率, 其值为:通道数*每秒数据位数*每样本的数据位数/8
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* 播放软件可以利用该值估计缓冲区大小
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*/
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unsigned short int BlockAlign; /*
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* 每样本的数据位数(按字节算), 其值为:通道数*每样本的数据位值/8， 播放
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* 软件需要一次处理多个该值大小的字节数据, 以便将其值用于缓冲区的调整
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*/
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unsigned short int BitsPerSample; /*
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* 每样本的数据位数, 表示每个声道中各个样本的数据位数. 如果有多个声道,
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* 对每个声道而言, 样本大小都一样
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*/
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char SubChunk2ID[5]; // 数据标记"data"
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unsigned long int SubChunk2Size; // 语音数据的长度
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} WAVE;
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/*
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* pBuffer内部申请空间，需要由外部释放
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*/
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bool GetWaveHeadInfo(FILE*stream, WAVE& outWavHead);
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#endif /* WAVHEAD_H_ */
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