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140 lines
4.1 KiB
C
140 lines
4.1 KiB
C
#ifndef __LIBWAVEFORMAT_H__
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#define __LIBWAVEFORMAT_H__
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#ifdef WIN32
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#pragma once
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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//general declarations
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#ifdef _MSC_VER
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typedef __int8 t_wav_int8;
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typedef unsigned __int8 t_wav_uint8;
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typedef __int16 t_wav_int16;
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typedef unsigned __int16 t_wav_uint16;
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typedef __int32 t_wav_int32;
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typedef unsigned __int32 t_wav_uint32;
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typedef __int64 t_wav_int64;
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typedef unsigned __int64 t_wav_uint64;
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typedef float t_wav_float32;
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typedef double t_wav_float64;
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#else
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#include <stdint.h>
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typedef int8_t t_wav_int8;
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typedef uint8_t t_wav_uint8;
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typedef int16_t t_wav_int16;
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typedef uint16_t t_wav_uint16;
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typedef int32_t t_wav_int32;
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typedef uint32_t t_wav_uint32;
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typedef int64_t t_wav_int64;
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typedef uint64_t t_wav_uint64;
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typedef float t_wav_float32;
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typedef double t_wav_float64;
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#endif
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typedef union
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{
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t_wav_float32 f;
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t_wav_uint32 n;
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} t_wav_conv;
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#define waveformat_tag_int 1
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#define waveformat_tag_float 3
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//WAV file reader
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typedef struct
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{
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t_wav_uint32 (*m_read)(void * p_user_data,void * p_buffer,t_wav_uint32 p_bytes);
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void * m_user_data;
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} t_wav_input_file_callback;
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typedef struct
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{
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void (*m_convert_float32)(t_wav_uint8 const * p_input,t_wav_float32 * p_sample_buffer,t_wav_uint32 p_sample_count);
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void (*m_convert_int16)(t_wav_uint8 const * p_input,t_wav_int16 * p_sample_buffer,t_wav_uint32 p_sample_count);
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} t_wav_input_handler;
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typedef struct
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{
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t_wav_input_file_callback m_callback;
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t_wav_input_handler m_input_handler;
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t_wav_uint16 m_format_tag;
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t_wav_uint16 m_channels;
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t_wav_uint32 m_samples_per_sec;
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t_wav_uint32 m_avg_bytes_per_sec;
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t_wav_uint16 m_block_align;
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t_wav_uint16 m_bits_per_sample;
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t_wav_uint32 m_bytes_per_sample, m_buffer_size;
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t_wav_uint32 m_data_size;
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t_wav_uint32 m_data_position;
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t_wav_uint8 m_workbuffer[512];
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} t_wav_input_file;
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t_wav_uint32 waveformat_input_open(t_wav_input_file * p_file,t_wav_input_file_callback p_callback);
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t_wav_uint32 waveformat_input_process_float32(t_wav_input_file * p_file,t_wav_float32 * p_sample_buffer,t_wav_uint32 p_sample_count);
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t_wav_uint32 waveformat_input_process_int16(t_wav_input_file * p_file,t_wav_int16 * p_sample_buffer,t_wav_uint32 p_sample_count);
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void waveformat_input_close(t_wav_input_file * p_file);
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t_wav_uint32 waveformat_input_query_sample_rate(t_wav_input_file * p_file);
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t_wav_uint32 waveformat_input_query_channels(t_wav_input_file * p_file);
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t_wav_uint32 waveformat_input_query_length(t_wav_input_file * p_file);
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//WAV file writer
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typedef struct
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{
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t_wav_uint32 (*m_write)(void * p_user_data,void const * p_buffer,t_wav_uint32 p_bytes);
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t_wav_uint32 (*m_seek)(void * p_user_data,t_wav_uint32 p_position);
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void * m_user_data;
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} t_wav_output_file_callback;
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typedef struct
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{
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void (*m_convert_float32)(t_wav_float32 const * p_sample_buffer,t_wav_uint8 * p_output,t_wav_uint32 p_sample_count);
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void (*m_convert_int16)(t_wav_int16 const * p_sample_buffer,t_wav_uint8 * p_output,t_wav_uint32 p_sample_count);
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} t_wav_output_handler;
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typedef struct
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{
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t_wav_output_file_callback m_callback;
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t_wav_output_handler m_output_handler;
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t_wav_uint32 m_channels;
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t_wav_uint32 m_bits_per_sample;
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t_wav_uint32 m_float;
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t_wav_uint32 m_sample_rate;
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t_wav_uint32 m_samples_written,m_samples_written_expected;
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t_wav_uint32 m_bytes_per_sample, m_buffer_size;
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t_wav_uint8 m_workbuffer[512];
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} t_wav_output_file;
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t_wav_uint32 waveformat_output_open(t_wav_output_file * p_file,t_wav_output_file_callback p_callback,t_wav_uint32 p_channels,t_wav_uint32 p_bits_per_sample,t_wav_uint32 p_float,t_wav_uint32 p_sample_rate,t_wav_uint32 p_expected_samples);
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t_wav_uint32 waveformat_output_process_float32(t_wav_output_file * p_file,t_wav_float32 const * p_sample_buffer,t_wav_uint32 p_sample_count);
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t_wav_uint32 waveformat_output_process_int16(t_wav_output_file * p_file,t_wav_int16 const * p_sample_buffer,t_wav_uint32 p_sample_count);
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t_wav_uint32 waveformat_output_close(t_wav_output_file * p_file);
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#ifdef __cplusplus
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} //extern "C"
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#endif
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#endif //__LIBWAVEFORMAT_H__
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