Add support for retrieving the cursor and length in seconds.

This has been added for `ma_data_source` and `ma_sound`.

Public issue https://github.com/mackron/miniaudio/issues/411

miniaudio.h

@@ -9305,6 +9305,8 @@ MA_API ma_result ma_data_source_seek_to_pcm_frame(ma_data_source* pDataSource, m
 MA_API ma_result ma_data_source_get_data_format(ma_data_source* pDataSource, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap);
 MA_API ma_result ma_data_source_get_cursor_in_pcm_frames(ma_data_source* pDataSource, ma_uint64* pCursor);
 MA_API ma_result ma_data_source_get_length_in_pcm_frames(ma_data_source* pDataSource, ma_uint64* pLength);    /* Returns MA_NOT_IMPLEMENTED if the length is unknown or cannot be determined. Decoders can return this. */
+MA_API ma_result ma_data_source_get_cursor_in_seconds(ma_data_source* pDataSource, float* pCursor);
+MA_API ma_result ma_data_source_get_length_in_seconds(ma_data_source* pDataSource, float* pLength);
 MA_API ma_result ma_data_source_set_looping(ma_data_source* pDataSource, ma_bool32 isLooping);
 MA_API ma_bool32 ma_data_source_is_looping(ma_data_source* pDataSource);
 MA_API ma_result ma_data_source_set_range_in_pcm_frames(ma_data_source* pDataSource, ma_uint64 rangeBegInFrames, ma_uint64 rangeEndInFrames);
@@ -10925,6 +10927,8 @@ MA_API ma_result ma_sound_seek_to_pcm_frame(ma_sound* pSound, ma_uint64 frameInd
 MA_API ma_result ma_sound_get_data_format(ma_sound* pSound, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap);
 MA_API ma_result ma_sound_get_cursor_in_pcm_frames(ma_sound* pSound, ma_uint64* pCursor);
 MA_API ma_result ma_sound_get_length_in_pcm_frames(ma_sound* pSound, ma_uint64* pLength);
+MA_API ma_result ma_sound_get_cursor_in_seconds(ma_sound* pSound, float* pCursor);
+MA_API ma_result ma_sound_get_length_in_seconds(ma_sound* pSound, float* pLength);
 
 MA_API ma_result ma_sound_group_init(ma_engine* pEngine, ma_uint32 flags, ma_sound_group* pParentGroup, ma_sound_group* pGroup);
 MA_API ma_result ma_sound_group_init_ex(ma_engine* pEngine, const ma_sound_group_config* pConfig, ma_sound_group* pGroup);
@@ -54777,6 +54781,60 @@ MA_API ma_result ma_data_source_get_length_in_pcm_frames(ma_data_source* pDataSo
     return pDataSourceBase->vtable->onGetLength(pDataSource, pLength);
 }
 
+MA_API ma_result ma_data_source_get_cursor_in_seconds(ma_data_source* pDataSource, float* pCursor)
+{
+    ma_result result;
+    ma_uint64 cursorInPCMFrames;
+    ma_uint32 sampleRate;
+
+    if (pCursor == NULL) {
+        return MA_INVALID_ARGS;
+    }
+
+    *pCursor = 0;
+
+    result = ma_data_source_get_cursor_in_pcm_frames(pDataSource, &cursorInPCMFrames);
+    if (result != MA_SUCCESS) {
+        return result;
+    }
+
+    result = ma_data_source_get_data_format(pDataSource, NULL, NULL, &sampleRate, NULL, 0);
+    if (result != MA_SUCCESS) {
+        return result;
+    }
+
+    *pCursor = cursorInPCMFrames / (float)sampleRate;
+
+    return MA_SUCCESS;
+}
+
+MA_API ma_result ma_data_source_get_length_in_seconds(ma_data_source* pDataSource, float* pLength)
+{
+    ma_result result;
+    ma_uint64 lengthInPCMFrames;
+    ma_uint32 sampleRate;
+
+    if (pLength == NULL) {
+        return MA_INVALID_ARGS;
+    }
+
+    *pLength = 0;
+
+    result = ma_data_source_get_length_in_pcm_frames(pDataSource, &lengthInPCMFrames);
+    if (result != MA_SUCCESS) {
+        return result;
+    }
+
+    result = ma_data_source_get_data_format(pDataSource, NULL, NULL, &sampleRate, NULL, 0);
+    if (result != MA_SUCCESS) {
+        return result;
+    }
+
+    *pLength = lengthInPCMFrames / (float)sampleRate;
+
+    return MA_SUCCESS;
+}
+
 MA_API ma_result ma_data_source_set_looping(ma_data_source* pDataSource, ma_bool32 isLooping)
 {
     ma_data_source_base* pDataSourceBase = (ma_data_source_base*)pDataSource;
@@ -73075,6 +73133,34 @@ MA_API ma_result ma_sound_get_length_in_pcm_frames(ma_sound* pSound, ma_uint64*
     return ma_data_source_get_length_in_pcm_frames(pSound->pDataSource, pLength);
 }
 
+MA_API ma_result ma_sound_get_cursor_in_seconds(ma_sound* pSound, float* pCursor)
+{
+    if (pSound == NULL) {
+        return MA_INVALID_ARGS;
+    }
+
+    /* The notion of a cursor is only valid for sounds that are backed by a data source. */
+    if (pSound->pDataSource == NULL) {
+        return MA_INVALID_OPERATION;
+    }
+
+    return ma_data_source_get_cursor_in_seconds(pSound->pDataSource, pCursor);
+}
+
+MA_API ma_result ma_sound_get_length_in_seconds(ma_sound* pSound, float* pLength)
+{
+    if (pSound == NULL) {
+        return MA_INVALID_ARGS;
+    }
+
+    /* The notion of a sound length is only valid for sounds that are backed by a data source. */
+    if (pSound->pDataSource == NULL) {
+        return MA_INVALID_OPERATION;
+    }
+
+    return ma_data_source_get_length_in_seconds(pSound->pDataSource, pLength);
+}
+
 
 MA_API ma_result ma_sound_group_init(ma_engine* pEngine, ma_uint32 flags, ma_sound_group* pParentGroup, ma_sound_group* pGroup)
 {