mirror of
https://github.com/libretro/RetroArch.git
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95 lines
3.1 KiB
C
95 lines
3.1 KiB
C
/* Copyright (C) 2010-2020 The RetroArch team
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*
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* ---------------------------------------------------------------------------------------
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* The following license statement only applies to this file (audio_mix.h).
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* ---------------------------------------------------------------------------------------
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*
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* Permission is hereby granted, free of charge,
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* to any person obtaining a copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef __LIBRETRO_SDK_AUDIO_MIX_H__
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#define __LIBRETRO_SDK_AUDIO_MIX_H__
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#include <retro_common_api.h>
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#include <stdint.h>
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#include <stddef.h>
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#ifdef _WIN32
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#include <direct.h>
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#else
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#include <unistd.h>
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#endif
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#include <formats/rwav.h>
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#include <audio/audio_resampler.h>
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RETRO_BEGIN_DECLS
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typedef struct
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{
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double ratio;
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void *buf;
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int16_t *upsample_buf;
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float *float_buf;
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float *float_resample_buf;
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int16_t *resample_buf;
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const retro_resampler_t *resampler;
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void *resampler_data;
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rwav_t *rwav;
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ssize_t len;
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size_t resample_len;
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int sample_rate;
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bool resample;
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} audio_chunk_t;
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#if defined(__SSE2__)
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#define audio_mix_volume audio_mix_volume_SSE2
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void audio_mix_volume_SSE2(float *out,
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const float *in, float vol, size_t samples);
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#else
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#define audio_mix_volume audio_mix_volume_C
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#endif
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void audio_mix_volume_C(float *dst, const float *src, float vol, size_t samples);
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void audio_mix_free_chunk(audio_chunk_t *chunk);
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audio_chunk_t* audio_mix_load_wav_file(const char *path, int sample_rate,
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const char *resampler_ident, enum resampler_quality quality);
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size_t audio_mix_get_chunk_num_samples(audio_chunk_t *chunk);
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/**
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* audio_mix_get_chunk_sample:
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* @chunk : audio chunk instance
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* @channel : channel of the sample (0=left, 1=right)
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* @index : index of the sample
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*
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* Get a sample from an audio chunk.
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*
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* Returns: A signed 16-bit audio sample, (if necessary) resampled into the desired output rate.
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**/
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int16_t audio_mix_get_chunk_sample(audio_chunk_t *chunk, unsigned channel, size_t sample);
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int16_t* audio_mix_get_chunk_samples(audio_chunk_t *chunk);
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int audio_mix_get_chunk_num_channels(audio_chunk_t *chunk);
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RETRO_END_DECLS
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#endif
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