mirror of https://github.com/encounter/SDL.git
81 lines
3.0 KiB
C
81 lines
3.0 KiB
C
/*
|
|
Simple DirectMedia Layer
|
|
Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org>
|
|
|
|
This software is provided 'as-is', without any express or implied
|
|
warranty. In no event will the authors be held liable for any damages
|
|
arising from the use of this software.
|
|
|
|
Permission is granted to anyone to use this software for any purpose,
|
|
including commercial applications, and to alter it and redistribute it
|
|
freely, subject to the following restrictions:
|
|
|
|
1. The origin of this software must not be misrepresented; you must not
|
|
claim that you wrote the original software. If you use this software
|
|
in a product, an acknowledgment in the product documentation would be
|
|
appreciated but is not required.
|
|
2. Altered source versions must be plainly marked as such, and must not be
|
|
misrepresented as being the original software.
|
|
3. This notice may not be removed or altered from any source distribution.
|
|
*/
|
|
|
|
#ifndef SDL_audio_c_h_
|
|
#define SDL_audio_c_h_
|
|
|
|
#include "../SDL_internal.h"
|
|
|
|
#ifndef DEBUG_CONVERT
|
|
#define DEBUG_CONVERT 0
|
|
#endif
|
|
|
|
#if DEBUG_CONVERT
|
|
#define LOG_DEBUG_CONVERT(from, to) fprintf(stderr, "Converting %s to %s.\n", from, to);
|
|
#else
|
|
#define LOG_DEBUG_CONVERT(from, to)
|
|
#endif
|
|
|
|
/* Functions and variables exported from SDL_audio.c for SDL_sysaudio.c */
|
|
|
|
#ifdef HAVE_LIBSAMPLERATE_H
|
|
#include "samplerate.h"
|
|
extern SDL_bool SRC_available;
|
|
extern int SRC_converter;
|
|
extern SRC_STATE* (*SRC_src_new)(int converter_type, int channels, int *error);
|
|
extern int (*SRC_src_process)(SRC_STATE *state, SRC_DATA *data);
|
|
extern int (*SRC_src_reset)(SRC_STATE *state);
|
|
extern SRC_STATE* (*SRC_src_delete)(SRC_STATE *state);
|
|
extern const char* (*SRC_src_strerror)(int error);
|
|
#endif
|
|
|
|
/* Functions to get a list of "close" audio formats */
|
|
extern SDL_AudioFormat SDL_FirstAudioFormat(SDL_AudioFormat format);
|
|
extern SDL_AudioFormat SDL_NextAudioFormat(void);
|
|
|
|
/* Function to calculate the size and silence for a SDL_AudioSpec */
|
|
extern Uint8 SDL_SilenceValueForFormat(const SDL_AudioFormat format);
|
|
extern void SDL_CalculateAudioSpec(SDL_AudioSpec * spec);
|
|
|
|
/* Choose the audio filter functions below */
|
|
extern void SDL_ChooseAudioConverters(void);
|
|
|
|
/* These pointers get set during SDL_ChooseAudioConverters() to various SIMD implementations. */
|
|
extern SDL_AudioFilter SDL_Convert_S8_to_F32;
|
|
extern SDL_AudioFilter SDL_Convert_U8_to_F32;
|
|
extern SDL_AudioFilter SDL_Convert_S16_to_F32;
|
|
extern SDL_AudioFilter SDL_Convert_U16_to_F32;
|
|
extern SDL_AudioFilter SDL_Convert_S32_to_F32;
|
|
extern SDL_AudioFilter SDL_Convert_F32_to_S8;
|
|
extern SDL_AudioFilter SDL_Convert_F32_to_U8;
|
|
extern SDL_AudioFilter SDL_Convert_F32_to_S16;
|
|
extern SDL_AudioFilter SDL_Convert_F32_to_U16;
|
|
extern SDL_AudioFilter SDL_Convert_F32_to_S32;
|
|
|
|
/* You need to call SDL_PrepareResampleFilter() before using the internal resampler.
|
|
SDL_AudioQuit() calls SDL_FreeResamplerFilter(), you should never call it yourself. */
|
|
extern int SDL_PrepareResampleFilter(void);
|
|
extern void SDL_FreeResampleFilter(void);
|
|
|
|
#endif /* SDL_audio_c_h_ */
|
|
|
|
/* vi: set ts=4 sw=4 expandtab: */
|