aaudio: Set low-latency audio mode.

Note that apparently this has caused some weird-sounding audio
on some Android devices, so we might wrap this in a hint later,
or try to check for specific devices.

Fixes #8888.

src/audio/aaudio/SDL_aaudio.c

@@ -121,6 +121,7 @@ static int aaudio_OpenDevice(_THIS, const char *devname)
     }
 
     ctx.AAudioStreamBuilder_setErrorCallback(ctx.builder, aaudio_errorCallback, private);
+    ctx.AAudioStreamBuilder_setPerformanceMode(ctx.builder, AAUDIO_PERFORMANCE_MODE_LOW_LATENCY);
 
     LOGI("AAudio Try to open %u hz %u bit chan %u %s samples %u",
          this->spec.freq, SDL_AUDIO_BITSIZE(this->spec.format),

src/audio/aaudio/SDL_aaudiofuncs.h

@@ -32,7 +32,7 @@ SDL_PROC(void, AAudioStreamBuilder_setFormat, (AAudioStreamBuilder * builder, aa
 SDL_PROC_UNUSED(void, AAudioStreamBuilder_setSharingMode, (AAudioStreamBuilder * builder, aaudio_sharing_mode_t sharingMode))
 SDL_PROC(void, AAudioStreamBuilder_setDirection, (AAudioStreamBuilder * builder, aaudio_direction_t direction))
 SDL_PROC_UNUSED(void, AAudioStreamBuilder_setBufferCapacityInFrames, (AAudioStreamBuilder * builder, int32_t numFrames))
-SDL_PROC_UNUSED(void, AAudioStreamBuilder_setPerformanceMode, (AAudioStreamBuilder * builder, aaudio_performance_mode_t mode))
+SDL_PROC(void, AAudioStreamBuilder_setPerformanceMode, (AAudioStreamBuilder * builder, aaudio_performance_mode_t mode))
 SDL_PROC_UNUSED(void, AAudioStreamBuilder_setUsage, (AAudioStreamBuilder * builder, aaudio_usage_t usage))                                         /* API 28 */
 SDL_PROC_UNUSED(void, AAudioStreamBuilder_setContentType, (AAudioStreamBuilder * builder, aaudio_content_type_t contentType))                      /* API 28 */
 SDL_PROC_UNUSED(void, AAudioStreamBuilder_setInputPreset, (AAudioStreamBuilder * builder, aaudio_input_preset_t inputPreset))                      /* API 28 */