118 feed_matrix_apply(struct feed_matrix_info *info, uint8_t *src, uint8_t *dst,  in feed_matrix_apply()  argument
126 		for (i = 0; info->matrix[i].chn[0] != SND_CHN_T_EOF; i++) {  in feed_matrix_apply()
127 			if (info->matrix[i].chn[0] == SND_CHN_T_NULL) {  in feed_matrix_apply()
129 				dst += info->bps;  in feed_matrix_apply()
131 			} else if (info->matrix[i].chn[1] == SND_CHN_T_EOF) {  in feed_matrix_apply()
133 				    info->matrix[i].chn[0], fmt);  in feed_matrix_apply()
135 				dst += info->bps;  in feed_matrix_apply()
140 			for (j = 0; info->matrix[i].chn[j] != SND_CHN_T_EOF;  in feed_matrix_apply()
143 				    info->matrix[i].chn[j], fmt);  in feed_matrix_apply()
147 			accum = (accum * info->matrix[i].mul) >>  in feed_matrix_apply()
148 			    info->matrix[i].shift;  in feed_matrix_apply()
154 			dst += info->bps;  in feed_matrix_apply()
156 		src += info->ialign;  in feed_matrix_apply()
161 feed_matrix_reset(struct feed_matrix_info *info)  in feed_matrix_reset()  argument
165 	for (i = 0; i < nitems(info->matrix); i++) {  in feed_matrix_reset()
167 		    j < (sizeof(info->matrix[i].chn) /  in feed_matrix_reset()
168 		    sizeof(info->matrix[i].chn[0])); j++) {  in feed_matrix_reset()
169 			info->matrix[i].chn[j] = SND_CHN_T_EOF;  in feed_matrix_reset()
171 		info->matrix[i].mul   = 1;  in feed_matrix_reset()
172 		info->matrix[i].shift = 0;  in feed_matrix_reset()
177 feed_matrix_setup(struct feed_matrix_info *info, struct pcmchan_matrix *m_in,  in feed_matrix_setup()  argument
183 	if (info == NULL || m_in == NULL || m_out == NULL ||  in feed_matrix_setup()
184 	    AFMT_CHANNEL(info->in) != m_in->channels ||  in feed_matrix_setup()
185 	    AFMT_CHANNEL(info->out) != m_out->channels ||  in feed_matrix_setup()
190 	feed_matrix_reset(info);  in feed_matrix_setup()
220 			info->matrix[ch].chn[0] = SND_CHN_T_NULL;  in feed_matrix_setup()
230 					info->matrix[ch].chn[j++] =  in feed_matrix_setup()
231 					    m_in->offset[i] * info->bps;  in feed_matrix_setup()
233 					info->matrix[ch].chn[j++] =  in feed_matrix_setup()
254 			info->matrix[ch].mul   = mul;  in feed_matrix_setup()
255 			info->matrix[ch].shift = shift;  in feed_matrix_setup()
262 	for (i = 0; info->matrix[i].chn[0] != SND_CHN_T_EOF; i++) {  in feed_matrix_setup()
264 		for (j = 0; info->matrix[i].chn[j] != SND_CHN_T_EOF; j++) {  in feed_matrix_setup()
268 			    (info->matrix[i].chn[j] == SND_CHN_T_NULL) ?  in feed_matrix_setup()
269 			    0xffffffff : info->matrix[i].chn[j] / info->bps);  in feed_matrix_setup()
272 		    info->matrix[i].mul, info->matrix[i].shift);  in feed_matrix_setup()
282 	struct feed_matrix_info *info;  in feed_matrix_init()  local
289 	info = malloc(sizeof(*info), M_DEVBUF, M_NOWAIT | M_ZERO);  in feed_matrix_init()
290 	if (info == NULL)  in feed_matrix_init()
293 	info->in = f->desc->in;  in feed_matrix_init()
294 	info->out = f->desc->out;  in feed_matrix_init()
295 	info->fmt = AFMT_ENCODING(info->in);  in feed_matrix_init()
296 	info->bps = AFMT_BPS(info->in);  in feed_matrix_init()
297 	info->ialign = AFMT_ALIGN(info->in);  in feed_matrix_init()
298 	info->oalign = AFMT_ALIGN(info->out);  in feed_matrix_init()
300 	m_in  = feeder_matrix_format_map(info->in);  in feed_matrix_init()
301 	m_out = feeder_matrix_format_map(info->out);  in feed_matrix_init()
303 	ret = feed_matrix_setup(info, m_in, m_out);  in feed_matrix_init()
305 		free(info, M_DEVBUF);  in feed_matrix_init()
309 	f->data = info;  in feed_matrix_init()
317 	struct feed_matrix_info *info;  in feed_matrix_free()  local
319 	info = f->data;  in feed_matrix_free()
320 	if (info != NULL)  in feed_matrix_free()
321 		free(info, M_DEVBUF);  in feed_matrix_free()
332 	struct feed_matrix_info *info;  in feed_matrix_feed()  local
336 	info = f->data;  in feed_matrix_feed()
337 	if (info->matrix[0].chn[0] == SND_CHN_T_EOF)  in feed_matrix_feed()
341 	count = SND_FXROUND(count, info->oalign);  in feed_matrix_feed()
342 	inmax = info->ialign + info->oalign;  in feed_matrix_feed()
353 		if (count < info->oalign)  in feed_matrix_feed()
357 			src = info->reservoir;  in feed_matrix_feed()
358 			j = info->ialign;  in feed_matrix_feed()
360 			if (info->ialign == info->oalign)  in feed_matrix_feed()
361 				j = count - info->oalign;  in feed_matrix_feed()
362 			else if (info->ialign > info->oalign)  in feed_matrix_feed()
363 				j = SND_FXROUND(count - info->oalign,  in feed_matrix_feed()
364 				    info->ialign);  in feed_matrix_feed()
366 				j = (SND_FXDIV(count, info->oalign) - 1) *  in feed_matrix_feed()
367 				    info->ialign;  in feed_matrix_feed()
372 		    info->ialign);  in feed_matrix_feed()
377 		switch (info->fmt) {  in feed_matrix_feed()
379 			feed_matrix_apply(info, src, dst, j, AFMT_S16_NE);  in feed_matrix_feed()
382 			feed_matrix_apply(info, src, dst, j, AFMT_S24_NE);  in feed_matrix_feed()
385 			feed_matrix_apply(info, src, dst, j, AFMT_S32_NE);  in feed_matrix_feed()
388 			feed_matrix_apply(info, src, dst, j, info->fmt);  in feed_matrix_feed()
392 		j *= info->oalign;  in feed_matrix_feed()