core/oss/pcm_plugin.c

49 static int snd_pcm_plugin_alloc(struct snd_pcm_plugin *plugin, snd_pcm_uframes_t frames)
65 	size = array3_size(frames, format->channels, width);
72 	if (plugin->buf_frames < frames) {
75 		plugin->buf_frames = frames;
84 			c->frames = frames;
96 			c->frames = frames;
108 int snd_pcm_plug_alloc(struct snd_pcm_substream *plug, snd_pcm_uframes_t frames)
117 				frames = plugin->dst_frames(plugin, frames);
118 			if ((snd_pcm_sframes_t)frames <= 0)
121 			err = snd_pcm_plugin_alloc(plugin, frames);
129 				frames = plugin->src_frames(plugin, frames);
130 			if ((snd_pcm_sframes_t)frames <= 0)
133 			err = snd_pcm_plugin_alloc(plugin, frames);
143 				       snd_pcm_uframes_t frames,
147 	return frames;
204 					 snd_pcm_sframes_t frames,
210 	while (plugin && frames > 0) {
213 		    frames > plugin->buf_frames)
214 			frames = plugin->buf_frames;
216 			frames = plugin->dst_frames(plugin, frames);
217 			if (frames < 0)
218 				return frames;
222 	return frames;
226 					 snd_pcm_sframes_t frames,
232 	while (plugin && frames > 0) {
235 			frames = plugin->src_frames(plugin, frames);
236 			if (frames < 0)
237 				return frames;
240 		    frames > plugin->buf_frames)
241 			frames = plugin->buf_frames;
244 	return frames;
587 		v->frames = count;
602 	snd_pcm_sframes_t frames = size;
606 		if (frames <= 0)
607 			return frames;
610 			snd_pcm_sframes_t frames1 = frames;
612 				frames1 = plugin->dst_frames(plugin, frames);
620 				frames = err;
622 					frames = plugin->src_frames(plugin, frames1);
623 					if (frames <= 0)
624 						return frames;
629 		pdprintf("write plugin: %s, %li\n", plugin->name, frames);
630 		frames = plugin->transfer(plugin, src_channels, dst_channels, frames);
631 		if (frames < 0)
632 			return frames;
636 	return calc_src_frames(plug, frames, true);
643 	snd_pcm_sframes_t frames = size;
646 	frames = calc_src_frames(plug, frames, true);
647 	if (frames < 0)
648 		return frames;
652 	while (plugin && frames > 0) {
655 			err = plugin->client_channels(plugin, frames, &dst_channels);
658 			frames = err;
662 		pdprintf("read plugin: %s, %li\n", plugin->name, frames);
663 		frames = plugin->transfer(plugin, src_channels, dst_channels, frames);
664 		if (frames < 0)
665 			return frames;
669 	return frames;