Add the notion of samples rates to audio buffers.

miniaudio.h

@@ -9335,6 +9335,7 @@ typedef struct
     ma_data_source_base ds;
     ma_format format;
     ma_uint32 channels;
+    ma_uint32 sampleRate;
     ma_uint64 cursor;
     ma_uint64 sizeInFrames;
     const void* pData;
@@ -9358,6 +9359,7 @@ typedef struct
 {
     ma_format format;
     ma_uint32 channels;
+    ma_uint32 sampleRate;
     ma_uint64 sizeInFrames;
     const void* pData;  /* If set to NULL, will allocate a block of memory for you. */
     ma_allocation_callbacks allocationCallbacks;
@@ -55200,7 +55202,7 @@ static ma_result ma_audio_buffer_ref__data_source_on_get_data_format(ma_data_sou
 
     *pFormat     = pAudioBufferRef->format;
     *pChannels   = pAudioBufferRef->channels;
-    *pSampleRate = 0;   /* There is no notion of a sample rate with audio buffers. */
+    *pSampleRate = pAudioBufferRef->sampleRate;
     ma_channel_map_init_standard(ma_standard_channel_map_default, pChannelMap, channelMapCap, pAudioBufferRef->channels);
 
     return MA_SUCCESS;
@@ -55256,6 +55258,7 @@ MA_API ma_result ma_audio_buffer_ref_init(ma_format format, ma_uint32 channels,
 
     pAudioBufferRef->format       = format;
     pAudioBufferRef->channels     = channels;
+    pAudioBufferRef->sampleRate   = 0;  /* TODO: Version 0.12. Set this to sampleRate. */
     pAudioBufferRef->cursor       = 0;
     pAudioBufferRef->sizeInFrames = sizeInFrames;
     pAudioBufferRef->pData        = pData;
@@ -55466,10 +55469,11 @@ MA_API ma_audio_buffer_config ma_audio_buffer_config_init(ma_format format, ma_u
     ma_audio_buffer_config config;
 
     MA_ZERO_OBJECT(&config);
-    config.format = format;
-    config.channels = channels;
+    config.format       = format;
+    config.channels     = channels;
+    config.sampleRate   = 0;    /* TODO: Version 0.12. Set this to sampleRate. */
     config.sizeInFrames = sizeInFrames;
-    config.pData = pData;
+    config.pData        = pData;
     ma_allocation_callbacks_init_copy(&config.allocationCallbacks, pAllocationCallbacks);
 
     return config;
@@ -55498,6 +55502,9 @@ static ma_result ma_audio_buffer_init_ex(const ma_audio_buffer_config* pConfig,
         return result;
     }
 
+    /* TODO: Version 0.12. Set this in ma_audio_buffer_ref_init() instead of here. */
+    pAudioBuffer->ref.sampleRate = pConfig->sampleRate;
+
     ma_allocation_callbacks_init_copy(&pAudioBuffer->allocationCallbacks, &pConfig->allocationCallbacks);
 
     if (doCopy) {