tinysndfile.h
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/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
// This is a C library for reading and writing PCM .wav files. It is
// influenced by other libraries such as libsndfile and audiofile, except is
// much smaller and has an Apache 2.0 license.
// The API should be familiar to clients of similar libraries, but there is
// no guarantee that it will stay exactly source-code compatible with other libraries.
#include <stdio.h>
#include <sys/cdefs.h>
__BEGIN_DECLS
// visible to clients
typedef int sf_count_t;
typedef struct {
sf_count_t frames;
int samplerate;
int channels;
int format;
} SF_INFO;
// opaque to clients
typedef struct SNDFILE_ SNDFILE;
// Format
#define SF_FORMAT_TYPEMASK 1
#define SF_FORMAT_WAV 1
#define SF_FORMAT_SUBMASK 14
#define SF_FORMAT_PCM_16 2
#define SF_FORMAT_PCM_U8 4
#define SF_FORMAT_FLOAT 6
#define SF_FORMAT_PCM_32 8
#define SF_FORMAT_PCM_24 10
typedef struct {
void* (*open)(const char* path, void* user);
size_t (*read) (void* ptr, size_t size, size_t nmemb, void* datasource);
int (*seek) (void* datasource, long offset, int whence);
int (*close) (void* datasource);
long (*tell) (void* datasource);
} snd_callbacks;
// Open stream
SNDFILE *sf_open_read(const char *path, SF_INFO *info, snd_callbacks* cb, void* user);
// Close stream
void sf_close(SNDFILE *handle);
// Read interleaved frames and return actual number of frames read
sf_count_t sf_readf_short(SNDFILE *handle, short *ptr, sf_count_t desired);
/*
sf_count_t sf_readf_float(SNDFILE *handle, float *ptr, sf_count_t desired);
sf_count_t sf_readf_int(SNDFILE *handle, int *ptr, sf_count_t desired);
*/
__END_DECLS