2 * \file pcm/pcm_generic.c
5 * \author Jaroslav Kysela <perex@perex.cz>
9 * PCM - Common generic plugin code
10 * Copyright (c) 2004 by Jaroslav Kysela <perex@perex.cz>
13 * This library is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU Lesser General Public License as
15 * published by the Free Software Foundation; either version 2.1 of
16 * the License, or (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU Lesser General Public License for more details.
23 * You should have received a copy of the GNU Lesser General Public
24 * License along with this library; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
30 #include <sys/ioctl.h>
32 #include "pcm_local.h"
33 #include "pcm_generic.h"
37 int snd_pcm_generic_close(snd_pcm_t *pcm)
39 snd_pcm_generic_t *generic = pcm->private_data;
41 if (generic->close_slave)
42 err = snd_pcm_close(generic->slave);
47 int snd_pcm_generic_nonblock(snd_pcm_t *pcm, int nonblock)
49 snd_pcm_generic_t *generic = pcm->private_data;
50 return snd_pcm_nonblock(generic->slave, nonblock);
53 int snd_pcm_generic_async(snd_pcm_t *pcm, int sig, pid_t pid)
55 snd_pcm_generic_t *generic = pcm->private_data;
56 return snd_pcm_async(generic->slave, sig, pid);
59 int snd_pcm_generic_poll_descriptors_count(snd_pcm_t *pcm)
61 snd_pcm_generic_t *generic = pcm->private_data;
62 return snd_pcm_poll_descriptors_count(generic->slave);
65 int snd_pcm_generic_poll_descriptors(snd_pcm_t *pcm, struct pollfd *pfds, unsigned int space)
67 snd_pcm_generic_t *generic = pcm->private_data;
68 return snd_pcm_poll_descriptors(generic->slave, pfds, space);
71 int snd_pcm_generic_poll_revents(snd_pcm_t *pcm, struct pollfd *pfds, unsigned int nfds, unsigned short *revents)
73 snd_pcm_generic_t *generic = pcm->private_data;
74 return snd_pcm_poll_descriptors_revents(generic->slave, pfds, nfds, revents);
77 int snd_pcm_generic_info(snd_pcm_t *pcm, snd_pcm_info_t * info)
79 snd_pcm_generic_t *generic = pcm->private_data;
80 return snd_pcm_info(generic->slave, info);
83 int snd_pcm_generic_hw_free(snd_pcm_t *pcm)
85 snd_pcm_generic_t *generic = pcm->private_data;
86 return snd_pcm_hw_free(generic->slave);
89 int snd_pcm_generic_sw_params(snd_pcm_t *pcm, snd_pcm_sw_params_t *params)
91 snd_pcm_generic_t *generic = pcm->private_data;
92 return snd_pcm_sw_params(generic->slave, params);
95 int snd_pcm_generic_hw_refine(snd_pcm_t *pcm, snd_pcm_hw_params_t *params)
97 snd_pcm_generic_t *generic = pcm->private_data;
98 return snd_pcm_hw_refine(generic->slave, params);
101 int snd_pcm_generic_hw_params(snd_pcm_t *pcm, snd_pcm_hw_params_t *params)
103 snd_pcm_generic_t *generic = pcm->private_data;
104 return _snd_pcm_hw_params(generic->slave, params);
107 int snd_pcm_generic_prepare(snd_pcm_t *pcm)
109 snd_pcm_generic_t *generic = pcm->private_data;
110 return snd_pcm_prepare(generic->slave);
113 int snd_pcm_generic_channel_info(snd_pcm_t *pcm, snd_pcm_channel_info_t *info)
115 snd_pcm_generic_t *generic = pcm->private_data;
116 if (pcm->mmap_shadow) {
117 /* No own buffer is required - the plugin won't change
118 * the data on the buffer, or do safely on-the-place
121 return snd_pcm_channel_info(generic->slave, info);
123 /* Allocate own buffer */
124 return snd_pcm_channel_info_shm(pcm, info, -1);
128 int snd_pcm_generic_status(snd_pcm_t *pcm, snd_pcm_status_t * status)
130 snd_pcm_generic_t *generic = pcm->private_data;
131 return snd_pcm_status(generic->slave, status);
134 snd_pcm_state_t snd_pcm_generic_state(snd_pcm_t *pcm)
136 snd_pcm_generic_t *generic = pcm->private_data;
137 return snd_pcm_state(generic->slave);
140 int snd_pcm_generic_hwsync(snd_pcm_t *pcm)
142 snd_pcm_generic_t *generic = pcm->private_data;
143 return snd_pcm_hwsync(generic->slave);
146 int snd_pcm_generic_reset(snd_pcm_t *pcm)
148 snd_pcm_generic_t *generic = pcm->private_data;
149 return snd_pcm_reset(generic->slave);
152 int snd_pcm_generic_start(snd_pcm_t *pcm)
154 snd_pcm_generic_t *generic = pcm->private_data;
155 return snd_pcm_start(generic->slave);
158 int snd_pcm_generic_drop(snd_pcm_t *pcm)
160 snd_pcm_generic_t *generic = pcm->private_data;
161 return snd_pcm_drop(generic->slave);
164 int snd_pcm_generic_drain(snd_pcm_t *pcm)
166 snd_pcm_generic_t *generic = pcm->private_data;
167 return snd_pcm_drain(generic->slave);
170 int snd_pcm_generic_pause(snd_pcm_t *pcm, int enable)
172 snd_pcm_generic_t *generic = pcm->private_data;
173 return snd_pcm_pause(generic->slave, enable);
176 int snd_pcm_generic_resume(snd_pcm_t *pcm)
178 snd_pcm_generic_t *generic = pcm->private_data;
179 return snd_pcm_resume(generic->slave);
182 int snd_pcm_generic_delay(snd_pcm_t *pcm, snd_pcm_sframes_t *delayp)
184 snd_pcm_generic_t *generic = pcm->private_data;
185 return snd_pcm_delay(generic->slave, delayp);
188 snd_pcm_sframes_t snd_pcm_generic_forward(snd_pcm_t *pcm, snd_pcm_uframes_t frames)
190 snd_pcm_generic_t *generic = pcm->private_data;
191 return INTERNAL(snd_pcm_forward)(generic->slave, frames);
194 snd_pcm_sframes_t snd_pcm_generic_rewind(snd_pcm_t *pcm, snd_pcm_uframes_t frames)
196 snd_pcm_generic_t *generic = pcm->private_data;
197 return snd_pcm_rewind(generic->slave, frames);
200 int snd_pcm_generic_link(snd_pcm_t *pcm1, snd_pcm_t *pcm2)
202 snd_pcm_generic_t *generic = pcm1->private_data;
203 if (generic->slave->fast_ops->link)
204 return generic->slave->fast_ops->link(generic->slave->fast_op_arg, pcm2);
208 int snd_pcm_generic_link_slaves(snd_pcm_t *pcm, snd_pcm_t *master)
210 snd_pcm_generic_t *generic = pcm->private_data;
211 if (generic->slave->fast_ops->link_slaves)
212 return generic->slave->fast_ops->link_slaves(generic->slave->fast_op_arg, master);
216 int snd_pcm_generic_unlink(snd_pcm_t *pcm)
218 snd_pcm_generic_t *generic = pcm->private_data;
219 if (generic->slave->fast_ops->unlink)
220 return generic->slave->fast_ops->unlink(generic->slave->fast_op_arg);
224 snd_pcm_sframes_t snd_pcm_generic_writei(snd_pcm_t *pcm, const void *buffer, snd_pcm_uframes_t size)
226 snd_pcm_generic_t *generic = pcm->private_data;
227 return snd_pcm_writei(generic->slave, buffer, size);
230 snd_pcm_sframes_t snd_pcm_generic_writen(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size)
232 snd_pcm_generic_t *generic = pcm->private_data;
233 return snd_pcm_writen(generic->slave, bufs, size);
236 snd_pcm_sframes_t snd_pcm_generic_readi(snd_pcm_t *pcm, void *buffer, snd_pcm_uframes_t size)
238 snd_pcm_generic_t *generic = pcm->private_data;
239 return snd_pcm_readi(generic->slave, buffer, size);
242 snd_pcm_sframes_t snd_pcm_generic_readn(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size)
244 snd_pcm_generic_t *generic = pcm->private_data;
245 return snd_pcm_readn(generic->slave, bufs, size);
248 snd_pcm_sframes_t snd_pcm_generic_mmap_commit(snd_pcm_t *pcm,
249 snd_pcm_uframes_t offset,
250 snd_pcm_uframes_t size)
252 snd_pcm_generic_t *generic = pcm->private_data;
253 return snd_pcm_mmap_commit(generic->slave, offset, size);
256 snd_pcm_sframes_t snd_pcm_generic_avail_update(snd_pcm_t *pcm)
258 snd_pcm_generic_t *generic = pcm->private_data;
259 return snd_pcm_avail_update(generic->slave);
262 int snd_pcm_generic_mmap(snd_pcm_t *pcm)
264 if (pcm->mmap_shadow) {
265 /* Copy the slave mmapped buffer data */
266 snd_pcm_generic_t *generic = pcm->private_data;
267 pcm->mmap_channels = generic->slave->mmap_channels;
268 pcm->running_areas = generic->slave->running_areas;
269 pcm->stopped_areas = generic->slave->stopped_areas;
274 int snd_pcm_generic_munmap(snd_pcm_t *pcm)
276 if (pcm->mmap_shadow) {
278 pcm->mmap_channels = NULL;
279 pcm->running_areas = NULL;
280 pcm->stopped_areas = NULL;
285 #endif /* DOC_HIDDEN */