70 	/* Sure hope noone does more than 128 channels at once. */
82 static SRC_ERROR prepare_data (SINC_FILTER *filter, int channels, SRC_DATA *data, int half_filter_c…
209 sinc_filter_new (int converter_type, int channels)  in sinc_filter_new()  argument
214 	assert (channels > 0 && channels <= MAX_CHANNELS) ;  in sinc_filter_new()
247 		priv->b_len *= channels ;  in sinc_filter_new()
251 		priv->buffer = (float *) calloc (priv->b_len + channels, sizeof (float)) ;  in sinc_filter_new()
263 sinc_state_new (int converter_type, int channels, SRC_ERROR *error)  in sinc_state_new()  argument
268 	assert (channels > 0) ;  in sinc_state_new()
271 	if (channels > MAX_CHANNELS)  in sinc_state_new()
284 	state->channels = channels ;  in sinc_state_new()
287 	if (state->channels == 1)  in sinc_state_new()
289 	else if (state->channels == 2)  in sinc_state_new()
291 	else if (state->channels == 4)  in sinc_state_new()
293 	else if (state->channels == 6)  in sinc_state_new()
298 	state->private_data = sinc_filter_new (converter_type, state->channels) ;  in sinc_state_new()
329 	memset (filter->buffer + filter->b_len, 0xAA, state->channels * sizeof (filter->buffer [0])) ;  in sinc_reset()
354 	to_filter->buffer = (float *) malloc (sizeof (float) * (from_filter->b_len + state->channels)) ;  in sinc_copy()
361 …(to_filter->buffer, from_filter->buffer, sizeof (float) * (from_filter->b_len + state->channels)) ;  in sinc_copy()
448 	filter->in_count = data->input_frames * state->channels ;  in sinc_mono_vari_process()
449 	filter->out_count = data->output_frames * state->channels ;  in sinc_mono_vari_process()
463 	half_filter_chan_len = state->channels * (int) (lrint (count) + 1) ;  in sinc_mono_vari_process()
468 …filter->b_current = (filter->b_current + state->channels * lrint (input_index - rem)) % filter->b_…  in sinc_mono_vari_process()
480 		{	if ((state->error = prepare_data (filter, state->channels, data, half_filter_chan_len)) != 0)  in sinc_mono_vari_process()
510 …filter->b_current = (filter->b_current + state->channels * lrint (input_index - rem)) % filter->b_…  in sinc_mono_vari_process()
519 	data->input_frames_used = filter->in_used / state->channels ;  in sinc_mono_vari_process()
520 	data->output_frames_gen = filter->out_gen / state->channels ;  in sinc_mono_vari_process()
526 calc_output_stereo (SINC_FILTER *filter, int channels, increment_t increment, increment_t start_fil…  in calc_output_stereo()  argument
538 	data_index = filter->b_current - channels * coeff_count ;  in calc_output_stereo()
566 	data_index = filter->b_current + channels * (1 + coeff_count) ;  in calc_output_stereo()
604 	filter->in_count = data->input_frames * state->channels ;  in sinc_stereo_vari_process()
605 	filter->out_count = data->output_frames * state->channels ;  in sinc_stereo_vari_process()
619 	half_filter_chan_len = state->channels * (int) (lrint (count) + 1) ;  in sinc_stereo_vari_process()
624 …filter->b_current = (filter->b_current + state->channels * lrint (input_index - rem)) % filter->b_…  in sinc_stereo_vari_process()
636 		{	if ((state->error = prepare_data (filter, state->channels, data, half_filter_chan_len)) != 0)  in sinc_stereo_vari_process()
658 …calc_output_stereo (filter, state->channels, increment, start_filter_index, float_increment / filt…  in sinc_stereo_vari_process()
665 …filter->b_current = (filter->b_current + state->channels * lrint (input_index - rem)) % filter->b_…  in sinc_stereo_vari_process()
674 	data->input_frames_used = filter->in_used / state->channels ;  in sinc_stereo_vari_process()
675 	data->output_frames_gen = filter->out_gen / state->channels ;  in sinc_stereo_vari_process()
681 calc_output_quad (SINC_FILTER *filter, int channels, increment_t increment, increment_t start_filte…  in calc_output_quad()  argument
693 	data_index = filter->b_current - channels * coeff_count ;  in calc_output_quad()
721 	data_index = filter->b_current + channels * (1 + coeff_count) ;  in calc_output_quad()
760 	filter->in_count = data->input_frames * state->channels ;  in sinc_quad_vari_process()
761 	filter->out_count = data->output_frames * state->channels ;  in sinc_quad_vari_process()
775 	half_filter_chan_len = state->channels * (int) (lrint (count) + 1) ;  in sinc_quad_vari_process()
780 …filter->b_current = (filter->b_current + state->channels * lrint (input_index - rem)) % filter->b_…  in sinc_quad_vari_process()
792 		{	if ((state->error = prepare_data (filter, state->channels, data, half_filter_chan_len)) != 0)  in sinc_quad_vari_process()
814 …calc_output_quad (filter, state->channels, increment, start_filter_index, float_increment / filter…  in sinc_quad_vari_process()
821 …filter->b_current = (filter->b_current + state->channels * lrint (input_index - rem)) % filter->b_…  in sinc_quad_vari_process()
830 	data->input_frames_used = filter->in_used / state->channels ;  in sinc_quad_vari_process()
831 	data->output_frames_gen = filter->out_gen / state->channels ;  in sinc_quad_vari_process()
837 calc_output_hex (SINC_FILTER *filter, int channels, increment_t increment, increment_t start_filter…  in calc_output_hex()  argument
849 	data_index = filter->b_current - channels * coeff_count ;  in calc_output_hex()
877 	data_index = filter->b_current + channels * (1 + coeff_count) ;  in calc_output_hex()
915 	filter->in_count = data->input_frames * state->channels ;  in sinc_hex_vari_process()
916 	filter->out_count = data->output_frames * state->channels ;  in sinc_hex_vari_process()
930 	half_filter_chan_len = state->channels * (int) (lrint (count) + 1) ;  in sinc_hex_vari_process()
935 …filter->b_current = (filter->b_current + state->channels * lrint (input_index - rem)) % filter->b_…  in sinc_hex_vari_process()
947 		{	if ((state->error = prepare_data (filter, state->channels, data, half_filter_chan_len)) != 0)  in sinc_hex_vari_process()
969 …calc_output_hex (filter, state->channels, increment, start_filter_index, float_increment / filter-…  in sinc_hex_vari_process()
976 …filter->b_current = (filter->b_current + state->channels * lrint (input_index - rem)) % filter->b_…  in sinc_hex_vari_process()
985 	data->input_frames_used = filter->in_used / state->channels ;  in sinc_hex_vari_process()
986 	data->output_frames_gen = filter->out_gen / state->channels ;  in sinc_hex_vari_process()
992 …TER *filter, increment_t increment, increment_t start_filter_index, int channels, double scale, fl…  in calc_output_multi()  argument
1009 	data_index = filter->b_current - channels * coeff_count ;  in calc_output_multi()
1012 	{	int steps = int_div_ceil (-data_index, channels) ;  in calc_output_multi()
1016 		data_index += steps * channels ;  in calc_output_multi()
1019 	memset (left, 0, sizeof (left [0]) * channels) ;  in calc_output_multi()
1027 		assert (data_index >= 0 && data_index + channels - 1 < filter->b_len) ;  in calc_output_multi()
1028 		assert (data_index + channels - 1 < filter->b_end) ;  in calc_output_multi()
1029 		for (int ch = 0; ch < channels; ch++)  in calc_output_multi()
1033 		data_index = data_index + channels ;  in calc_output_multi()
1040 	data_index = filter->b_current + channels * (1 + coeff_count) ;  in calc_output_multi()
1042 	memset (right, 0, sizeof (right [0]) * channels) ;  in calc_output_multi()
1048 		assert (data_index >= 0 && data_index + channels - 1 < filter->b_len) ;  in calc_output_multi()
1049 		assert (data_index + channels - 1 < filter->b_end) ;  in calc_output_multi()
1050 		for (int ch = 0; ch < channels; ch++)  in calc_output_multi()
1054 		data_index = data_index - channels ;  in calc_output_multi()
1058 	for(int ch = 0; ch < channels; ch++)  in calc_output_multi()
1080 	filter->in_count = data->input_frames * state->channels ;  in sinc_multichan_vari_process()
1081 	filter->out_count = data->output_frames * state->channels ;  in sinc_multichan_vari_process()
1095 	half_filter_chan_len = state->channels * (int) (lrint (count) + 1) ;  in sinc_multichan_vari_process()
1100 …filter->b_current = (filter->b_current + state->channels * lrint (input_index - rem)) % filter->b_…  in sinc_multichan_vari_process()
1112 		{	if ((state->error = prepare_data (filter, state->channels, data, half_filter_chan_len)) != 0)  in sinc_multichan_vari_process()
1134 …calc_output_multi (filter, increment, start_filter_index, state->channels, float_increment / filte…  in sinc_multichan_vari_process()
1135 		filter->out_gen += state->channels ;  in sinc_multichan_vari_process()
1141 …filter->b_current = (filter->b_current + state->channels * lrint (input_index - rem)) % filter->b_…  in sinc_multichan_vari_process()
1150 	data->input_frames_used = filter->in_used / state->channels ;  in sinc_multichan_vari_process()
1151 	data->output_frames_gen = filter->out_gen / state->channels ;  in sinc_multichan_vari_process()
1160 prepare_data (SINC_FILTER *filter, int channels, SRC_DATA *data, int half_filter_chan_len)  in prepare_data()  argument
1177 	else if (filter->b_end + half_filter_chan_len + channels < filter->b_len)  in prepare_data()
1195 	len -= (len % channels) ;  in prepare_data()