68 #define EXPAND_CHANNELS(in_buff, in_buff_chans, out_buff, out_buff_chans, num_in_bytes, zero) \  argument
71     size_t num_out_samples = (num_in_samples * out_buff_chans) / in_buff_chans; \
75     size_t num_zero_chans = out_buff_chans - in_buff_chans; \
81         for (; dst_offset < out_buff_chans; dst_offset++) { \
99 #define EXPAND_MONO_TO_MULTI(in_buff, in_buff_chans, out_buff, out_buff_chans, num_in_bytes, zero) \  argument
102     size_t num_out_samples = (num_in_samples * out_buff_chans) / in_buff_chans; \
106     size_t num_zero_chans = out_buff_chans - in_buff_chans - 1; \
112         for (; dst_offset < out_buff_chans; dst_offset++) { \
128 #define CONTRACT_CHANNELS(in_buff, in_buff_chans, out_buff, out_buff_chans, num_in_bytes) \  argument
131     size_t num_out_samples = (num_in_samples * out_buff_chans) / in_buff_chans; \
132     size_t num_skip_samples = in_buff_chans - out_buff_chans; \
138         for (dst_offset = 0; dst_offset < out_buff_chans; dst_offset++) { \
162     size_t num_out_samples = (num_in_samples * out_buff_chans) / in_buff_chans; \
195     size_t num_out_samples = (num_in_samples * out_buff_chans) / in_buff_chans; \
228                                 void* out_buff, size_t out_buff_chans,  in contract_channels()  argument
233         if (out_buff_chans == 1) {  in contract_channels()
239                               (uint8_t*)out_buff, out_buff_chans,  in contract_channels()
244         if (out_buff_chans == 1) {  in contract_channels()
250                               (int16_t*)out_buff, out_buff_chans,  in contract_channels()
255         if (out_buff_chans == 1) {  in contract_channels()
262                               (uint8x3_t*)out_buff, out_buff_chans,  in contract_channels()
267         if (out_buff_chans == 1) {  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
366     if (out_buff_chans > in_buff_chans) {  in adjust_channels()
367         return expand_channels(in_buff, in_buff_chans, out_buff,  out_buff_chans,  in adjust_channels()
369     } else if (out_buff_chans < in_buff_chans) {  in adjust_channels()
370         return contract_channels(in_buff, in_buff_chans, out_buff,  out_buff_chans,  in adjust_channels()