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/* Copyright (C) 2010-2020 The RetroArch team
*
* ---------------------------------------------------------------------------------------
* The following license statement only applies to this file (rwav.h).
* ---------------------------------------------------------------------------------------
*
* Permission is hereby granted, free of charge,
* to any person obtaining a copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef __LIBRETRO_SDK_FORMAT_RWAV_H__
#define __LIBRETRO_SDK_FORMAT_RWAV_H__
#include <retro_common_api.h>
#include <stdint.h>
RETRO_BEGIN_DECLS
typedef struct
{
/* bits per sample */
unsigned int bitspersample;
/* number of channels */
unsigned int numchannels;
/* sample rate */
unsigned int samplerate;
/* number of *samples* */
size_t numsamples;
/* number of *bytes* in the pointer below, i.e. numsamples * numchannels * bitspersample/8 */
size_t subchunk2size;
/* PCM data */
const void* samples;
} rwav_t;
enum rwav_state
{
RWAV_ITERATE_ERROR = -1,
RWAV_ITERATE_MORE = 0,
RWAV_ITERATE_DONE = 1,
RWAV_ITERATE_BUF_SIZE = 4096
};
typedef struct rwav_iterator rwav_iterator_t;
/**
* Initializes the iterator to fill the out structure with data parsed from buf.
*/
void rwav_init(rwav_iterator_t* iter, rwav_t* out, const void* buf, size_t size);
/**
* Parses a piece of the data. Continue calling as long as it returns RWAV_ITERATE_MORE.
* Stop calling otherwise, and check for errors. If RWAV_ITERATE_DONE is returned,
* the rwav_t structure passed to rwav_init is ready to be used. The iterator does not
* have to be freed.
*/
enum rwav_state rwav_iterate(rwav_iterator_t *iter);
/**
* Loads the entire data in one go.
*/
enum rwav_state rwav_load(rwav_t* out, const void* buf, size_t size);
/**
* Frees parsed wave data.
*/
void rwav_free(rwav_t *rwav);
RETRO_END_DECLS
#endif
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