diff options
Diffstat (limited to 'Source/external/SDL2/src/audio/SDL_audio_c.h')
| -rw-r--r-- | Source/external/SDL2/src/audio/SDL_audio_c.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/Source/external/SDL2/src/audio/SDL_audio_c.h b/Source/external/SDL2/src/audio/SDL_audio_c.h new file mode 100644 index 0000000..d47ebb1 --- /dev/null +++ b/Source/external/SDL2/src/audio/SDL_audio_c.h @@ -0,0 +1,79 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2018 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 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: */ |