Update of /cvsroot/alsa/alsa-kernel/Documentation/DocBook
In directory sc8-pr-cvs1:/tmp/cvs-serv25806
Modified Files:
writing-an-alsa-driver.tmpl
Log Message:
More complete PCM device example
Index: writing-an-alsa-driver.tmpl
===================================================================
RCS file: /cvsroot/alsa/alsa-kernel/Documentation/DocBook/writing-an-alsa-driver.tmpl,v
retrieving revision 1.18
retrieving revision 1.19
diff -u -r1.18 -r1.19
--- writing-an-alsa-driver.tmpl 28 Dec 2003 10:54:24 -0000 1.18
+++ writing-an-alsa-driver.tmpl 30 Dec 2003 09:06:19 -0000 1.19
@@ -1910,8 +1910,27 @@
.periods_max = 1024,
};
+ /* hardware definition */
+ static snd_pcm_hardware_t snd_mychip_capture_hw = {
+ .info = (SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_BLOCK_TRANSFER |
+ SNDRV_PCM_INFO_MMAP_VALID),
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ .rates = SNDRV_PCM_RATE_8000_48000,
+ .rate_min = 8000,
+ .rate_max = 48000,
+ .channels_min = 2,
+ .channels_max = 2,
+ .buffer_bytes_max = 32768,
+ .period_bytes_min = 4096,
+ .period_bytes_max = 32768,
+ .periods_min = 1,
+ .periods_max = 1024,
+ };
+
/* open callback */
- static int snd_mychip_pcm_open(snd_pcm_substream_t *substream)
+ static int snd_mychip_playback_open(snd_pcm_substream_t *substream)
{
mychip_t *chip = snd_pcm_substream_chip(substream);
snd_pcm_runtime_t *runtime = substream->runtime;
@@ -1922,7 +1941,27 @@
}
/* close callback */
- static int snd_mychip_pcm_close(snd_pcm_substream_t *substream)
+ static int snd_mychip_playback_close(snd_pcm_substream_t *substream)
+ {
+ mychip_t *chip = snd_pcm_substream_chip(substream);
+ // the hardware-specific codes will be here
+ return 0;
+
+ }
+
+ /* open callback */
+ static int snd_mychip_capture_open(snd_pcm_substream_t *substream)
+ {
+ mychip_t *chip = snd_pcm_substream_chip(substream);
+ snd_pcm_runtime_t *runtime = substream->runtime;
+
+ runtime->hw = snd_mychip_capture_hw;
+ // more hardware-initialization will be done here
+ return 0;
+ }
+
+ /* close callback */
+ static int snd_mychip_capture_close(snd_pcm_substream_t *substream)
{
mychip_t *chip = snd_pcm_substream_chip(substream);
// the hardware-specific codes will be here
@@ -1993,6 +2032,18 @@
static snd_pcm_ops_t snd_mychip_playback_ops = {
.open = snd_mychip_playback_open,
.close = snd_mychip_playback_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = snd_mychip_pcm_hw_params,
+ .hw_free = snd_mychip_pcm_hw_free,
+ .prepare = snd_mychip_pcm_prepare,
+ .trigger = snd_mychip_pcm_trigger,
+ .pointer = snd_mychip_pcm_pointer,
+ };
+
+ /* operators */
+ static snd_pcm_ops_t snd_mychip_capture_ops = {
+ .open = snd_mychip_capture_open,
+ .close = snd_mychip_capture_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_mychip_pcm_hw_params,
.hw_free = snd_mychip_pcm_hw_free,
-------------------------------------------------------
This SF.net email is sponsored by: IBM Linux Tutorials.
Become an expert in LINUX or just sharpen your skills. Sign up for IBM's
Free Linux Tutorials. Learn everything from the bash shell to sys admin.
Click now! http://ads.osdn.com/?ad_id=1278&alloc_id=3371&op=click
_______________________________________________
Alsa-cvslog mailing list
[EMAIL PROTECTED]
https://lists.sourceforge.net/lists/listinfo/alsa-cvslog
