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audio: SDL_AudioStream now has callbacks for Get and Put operations.

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This allows code to feed a stream (or feed from a stream) on-demand,
which is to say: it can efficiently simulate the SDL2 audio callback.
This commit is contained in:
Ryan C. Gordon
2023-05-28 22:39:39 -04:00
parent 905c4fff5b
commit 56b1bc2198
8 changed files with 286 additions and 10 deletions
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4
src/dynapi/SDL_dynapi.sym
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@@ -879,6 +879,10 @@ SDL3_0.0.0 {
SDL_MixAudioFormat;
SDL_ConvertAudioSamples;
SDL_GetSilenceValueForFormat;
SDL_LockAudioStream;
SDL_UnlockAudioStream;
SDL_SetAudioStreamGetCallback;
SDL_SetAudioStreamPutCallback;
# extra symbols go here (don't modify this line)
local: *;
};

4
src/dynapi/SDL_dynapi_overrides.h
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@@ -905,3 +905,7 @@
#define SDL_MixAudioFormat SDL_MixAudioFormat_REAL
#define SDL_ConvertAudioSamples SDL_ConvertAudioSamples_REAL
#define SDL_GetSilenceValueForFormat SDL_GetSilenceValueForFormat_REAL
#define SDL_LockAudioStream SDL_LockAudioStream_REAL
#define SDL_UnlockAudioStream SDL_UnlockAudioStream_REAL
#define SDL_SetAudioStreamGetCallback SDL_SetAudioStreamGetCallback_REAL
#define SDL_SetAudioStreamPutCallback SDL_SetAudioStreamPutCallback_REAL

4
src/dynapi/SDL_dynapi_procs.h
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@@ -950,3 +950,7 @@ SDL_DYNAPI_PROC(int,SDL_LoadWAV_RW,(SDL_RWops *a, int b, SDL_AudioFormat *c, int
SDL_DYNAPI_PROC(int,SDL_MixAudioFormat,(Uint8 *a, const Uint8 *b, SDL_AudioFormat c, Uint32 d, int e),(a,b,c,d,e),return)
SDL_DYNAPI_PROC(int,SDL_ConvertAudioSamples,(SDL_AudioFormat a, int b, int c, const Uint8 *d, int e, SDL_AudioFormat f, int g, int h, Uint8 **i, int *j),(a,b,c,d,e,f,g,h,i,j),return)
SDL_DYNAPI_PROC(int,SDL_GetSilenceValueForFormat,(SDL_AudioFormat a),(a),return)
SDL_DYNAPI_PROC(int,SDL_LockAudioStream,(SDL_AudioStream *a),(a),return)
SDL_DYNAPI_PROC(int,SDL_UnlockAudioStream,(SDL_AudioStream *a),(a),return)
SDL_DYNAPI_PROC(int,SDL_SetAudioStreamGetCallback,(SDL_AudioStream *a, SDL_AudioStreamRequestCallback b, void *c),(a,b,c),return)
SDL_DYNAPI_PROC(int,SDL_SetAudioStreamPutCallback,(SDL_AudioStream *a, SDL_AudioStreamRequestCallback b, void *c),(a,b,c),return)