68 #define EXPAND_CHANNELS(in_buff, in_buff_chans, out_buff, out_buff_chans, num_in_bytes, zero) \  argument
72     typeof(out_buff) dst_ptr = (out_buff) + num_out_samples - 1; \
86     return num_out_samples * sizeof(*(out_buff)); \
99 #define EXPAND_MONO_TO_MULTI(in_buff, in_buff_chans, out_buff, out_buff_chans, num_in_bytes, zero) \  argument
103     typeof(out_buff) dst_ptr = (out_buff) + num_out_samples - 1; \
118     return num_out_samples * sizeof(*(out_buff)); \
128 #define CONTRACT_CHANNELS(in_buff, in_buff_chans, out_buff, out_buff_chans, num_in_bytes) \  argument
133     typeof(out_buff) dst_ptr = out_buff; \
144     return num_out_samples * sizeof(*(out_buff)); \
159 #define CONTRACT_TO_MONO(in_buff, out_buff, num_in_bytes) \  argument
164     typeof(out_buff) dst_ptr = out_buff; \
179     return num_out_samples * sizeof(*(out_buff)); \
192 #define CONTRACT_TO_MONO_24(in_buff, out_buff, num_in_bytes) \  argument
197     typeof(out_buff) dst_ptr = out_buff; \
208     return num_out_samples * sizeof(*(out_buff)); \
228                                 void* out_buff, size_t out_buff_chans,  in contract_channels()  argument
235             CONTRACT_TO_MONO((const uint8_t*)in_buff, (uint8_t*)out_buff, num_in_bytes);  in contract_channels()
239                               (uint8_t*)out_buff, out_buff_chans,  in contract_channels()
246             CONTRACT_TO_MONO((const int16_t*)in_buff, (int16_t*)out_buff, num_in_bytes);  in contract_channels()
250                               (int16_t*)out_buff, out_buff_chans,  in contract_channels()
258                                        (uint8x3_t*)out_buff, num_in_bytes);  in contract_channels()
262                               (uint8x3_t*)out_buff, out_buff_chans,  in contract_channels()
269             CONTRACT_TO_MONO((const int32_t*)in_buff, (int32_t*)out_buff, num_in_bytes);  in contract_channels()
273                               (int32_t*)out_buff, out_buff_chans,  in contract_channels()
299                               void* out_buff, size_t out_buff_chans,  in expand_channels()  argument
309                             (uint8_t*)out_buff, out_buff_chans,  in expand_channels()
314                             (uint8_t*)out_buff, out_buff_chans,  in expand_channels()
322                             (int16_t*)out_buff, out_buff_chans,  in expand_channels()
327                             (int16_t*)out_buff, out_buff_chans,  in expand_channels()
335                             (uint8x3_t*)out_buff, out_buff_chans,  in expand_channels()
340                             (uint8x3_t*)out_buff, out_buff_chans,  in expand_channels()
348                             (int32_t*)out_buff, out_buff_chans,  in expand_channels()
353                             (int32_t*)out_buff, out_buff_chans,  in expand_channels()
363                        void* out_buff, size_t out_buff_chans,  in adjust_channels()  argument
367         return expand_channels(in_buff, in_buff_chans, out_buff,  out_buff_chans,  in adjust_channels()
370         return contract_channels(in_buff, in_buff_chans, out_buff,  out_buff_chans,  in adjust_channels()
372     } else if (in_buff != out_buff) {  in adjust_channels()
373         memcpy(out_buff, in_buff, num_in_bytes);  in adjust_channels()