sound/pcm/feeder_matrix.c

35  * + very generic and compact, provided that the supplied matrix map is in a
41  * + 'matrix' is kind of 0x7a69, due to prolong mental block.
80 	} matrix[SND_CHN_T_MAX + 1];
132 		for (i = 0; info->matrix[i].chn[0] != SND_CHN_T_EOF;	\
134 			if (info->matrix[i].chn[0] == SND_CHN_T_NULL) {	\
139 			} else if (info->matrix[i].chn[1] ==		\
142 				    src + info->matrix[i].chn[0]);	\
151 			    info->matrix[i].chn[j] != SND_CHN_T_EOF;	\
154 				    src + info->matrix[i].chn[j]);	\
158 			accum = (accum * info->matrix[i].mul) >>	\
159 			    info->matrix[i].shift;			\
233 	for (i = 0; i < (sizeof(info->matrix) / sizeof(info->matrix[0])); i++) {
235 		    j < (sizeof(info->matrix[i].chn) /
236 		    sizeof(info->matrix[i].chn[0])); j++) {
237 			info->matrix[i].chn[j] = SND_CHN_T_EOF;
239 		info->matrix[i].mul   = 1;
240 		info->matrix[i].shift = 0;
254 		for (i = 0; info->matrix[i].chn[0] != SND_CHN_T_EOF;
256 			if (info->matrix[i].chn[0] == SND_CHN_T_NULL) {
260 			} else if (info->matrix[i].chn[1] ==
262 				v = info->rd(src + info->matrix[i].chn[0]);
270 			    info->matrix[i].chn[j] != SND_CHN_T_EOF;
272 				v = info->rd(src + info->matrix[i].chn[j]);
276 			accum = (accum * info->matrix[i].mul) >>
277 			    info->matrix[i].shift;
309 	 * If both in and out are part of standard matrix and identical, skip
317 	 * Special case for mono input matrix. If the output supports
336 			info->matrix[ch].chn[0] = SND_CHN_T_NULL;
346 					info->matrix[ch].chn[j++] =
349 					info->matrix[ch].chn[j++] =
370 			info->matrix[ch].mul   = mul;
371 			info->matrix[ch].shift = shift;
378 	for (i = 0; info->matrix[i].chn[0] != SND_CHN_T_EOF; i++) {
380 		for (j = 0; info->matrix[i].chn[j] != SND_CHN_T_EOF; j++) {
384 			    (info->matrix[i].chn[j] == SND_CHN_T_NULL) ?
385 			    0xffffffff : info->matrix[i].chn[j] / info->bps);
388 		    info->matrix[i].mul, info->matrix[i].shift);
475 	if (info->matrix[0].chn[0] == SND_CHN_T_EOF)
570  * feeder_matrix_default_channel_map(): Ditto, but return matrix map
587  *                                 matrix.
614  * feeder_matrix_format_id(): For a given audio format, return its matrix
635  * feeder_matrix_format_map(): For a given audio format, return its matrix
656  * feeder_matrix_id_map(): For a given matrix id, return its matrix map.
803 		/* channel not exist in matrix */