1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
4  * Copyright (c) 2005-2009 Ariff Abdullah <ariff@FreeBSD.org>
5  * All rights reserved.
54     uint32_t channels, uint8_t *dst, uint32_t count)			\
60 	dst += count * PCM_##BIT##_BPS * channels;			\
62 		i = channels;						\
64 			dst -= PCM_##BIT##_BPS;				\
65 			i--;						\
74 	} while (--count != 0);						\
101 	uint32_t bps, channels;  member
154 	if (f->desc->in != f->desc->out ||  in feed_volume_init()
155 	    AFMT_CHANNEL(f->desc->in) > SND_CHN_MAX)  in feed_volume_init()
159 		if (AFMT_ENCODING(f->desc->in) ==  in feed_volume_init()
166 			info->bps = AFMT_BPS(f->desc->in);  in feed_volume_init()
167 			info->channels = AFMT_CHANNEL(f->desc->in);  in feed_volume_init()
168 			info->apply = feed_volume_info_tab[i].apply;  in feed_volume_init()
169 			info->volume_class = SND_VOL_C_PCM;  in feed_volume_init()
170 			info->state = FEEDVOLUME_ENABLE;  in feed_volume_init()
172 			f->data = info;  in feed_volume_init()
173 			m = feeder_matrix_default_channel_map(info->channels);  in feed_volume_init()
195 	info = f->data;  in feed_volume_free()
199 	f->data = NULL;  in feed_volume_free()
211 	info = f->data;  in feed_volume_set()
218 		info->volume_class = value;  in feed_volume_set()
231 		info->state = value;  in feed_volume_set()
256 	info = f->data;  in feed_volume_feed()
258 	if (info->state == FEEDVOLUME_BYPASS)  in feed_volume_feed()
259 		return (FEEDER_FEED(f->source, c, b, count, source));  in feed_volume_feed()
261 	vol = c->volume[SND_VOL_C_VAL(info->volume_class)];  in feed_volume_feed()
262 	muted = c->muted[SND_VOL_C_VAL(info->volume_class)];  in feed_volume_feed()
263 	matrix = info->matrix;  in feed_volume_feed()
269 	i = info->channels;  in feed_volume_feed()
270 	while (i--) {  in feed_volume_feed()
280 		return (FEEDER_FEED(f->source, c, b, count, source));  in feed_volume_feed()
287 	align = info->bps * info->channels;  in feed_volume_feed()
293 		j = SND_FXDIV(FEEDER_FEED(f->source, c, dst, count, source),  in feed_volume_feed()
298 		info->apply(temp_vol, matrix, info->channels, dst, j);  in feed_volume_feed()
302 		count -= j;  in feed_volume_feed()
306 	return (dst - b);  in feed_volume_feed()
340 	if (f == NULL || f->desc == NULL || f->desc->type != FEEDER_VOLUME ||  in feeder_volume_apply_matrix()
341 	    f->data == NULL || m == NULL || m->channels < SND_CHN_MIN ||  in feeder_volume_apply_matrix()
342 	    m->channels > SND_CHN_MAX)  in feeder_volume_apply_matrix()
345 	info = f->data;  in feeder_volume_apply_matrix()
347 	for (i = 0; i < nitems(info->matrix); i++) {  in feeder_volume_apply_matrix()
348 		if (i < m->channels)  in feeder_volume_apply_matrix()
349 			info->matrix[i] = m->map[i].type;  in feeder_volume_apply_matrix()
351 			info->matrix[i] = SND_CHN_T_FL;  in feeder_volume_apply_matrix()
354 	info->channels = m->channels;  in feeder_volume_apply_matrix()