uint32_t mask, uint8_t *table );
VLC_API void aout_ChannelReorder(void *, size_t, unsigned, const uint8_t *, vlc_fourcc_t);
+VLC_API void aout_Interleave(void *dst, const void *src, unsigned samples,
+ unsigned channels, vlc_fourcc_t fourcc);
+
/**
* This fonction will compute the extraction parameter into pi_selection to go
* from i_channels with their type given by pi_order_src[] into the order
}
}
+/**
+ * Interleaves audio samples within a block of samples.
+ * \param dst destination buffer for interleaved samples
+ * \param src source buffer with consecutive planes of samples
+ * \param samples number of samples (per channel/per plane)
+ * \param chans channels/planes count
+ * \param fourcc sample format (must be a linear sample format)
+ * \note The samples must be naturally aligned in memory.
+ * \warning Destination and source buffers MUST NOT overlap.
+ */
+void aout_Interleave( void *restrict dst, const void *restrict src,
+ unsigned samples, unsigned chans, vlc_fourcc_t fourcc )
+{
+#define INTERLEAVE_TYPE(type) \
+do { \
+ type *d = dst; \
+ const type *s = src; \
+ for( size_t i = 0; i < chans; i++ ) { \
+ for( size_t j = 0, k = 0; j < samples; j++, k += chans ) \
+ d[k] = *(s++); \
+ d++; \
+ } \
+} while(0)
+
+ switch( fourcc )
+ {
+ case VLC_CODEC_U8: INTERLEAVE_TYPE(uint8_t); break;
+ case VLC_CODEC_S16N: INTERLEAVE_TYPE(uint16_t); break;
+ case VLC_CODEC_FL32: INTERLEAVE_TYPE(float); break;
+ case VLC_CODEC_S32N: INTERLEAVE_TYPE(int32_t); break;
+ case VLC_CODEC_FL64: INTERLEAVE_TYPE(double); break;
+ default: assert(0);
+ }
+#undef INTERLEAVE_TYPE
+}
+
/*****************************************************************************
* aout_ChannelExtract:
*****************************************************************************/