Author: titmuss
Date: Thu Dec 11 09:16:17 2008
New Revision: 3495
URL: http://svn.slimdevices.com?rev=3495&root=Jive&view=rev
Log:
Bug: N/A
Description:
Make the alsa audio buffer 30ms for all bitrates.
Modified:
7.4/trunk/squeezeplay/src/squeezeplay/src/audio/decode/decode_alsa.c
Modified: 7.4/trunk/squeezeplay/src/squeezeplay/src/audio/decode/decode_alsa.c
URL:
http://svn.slimdevices.com/7.4/trunk/squeezeplay/src/squeezeplay/src/audio/decode/decode_alsa.c?rev=3495&root=Jive&r1=3494&r2=3495&view=diff
==============================================================================
--- 7.4/trunk/squeezeplay/src/squeezeplay/src/audio/decode/decode_alsa.c
(original)
+++ 7.4/trunk/squeezeplay/src/squeezeplay/src/audio/decode/decode_alsa.c Thu
Dec 11 09:16:17 2008
@@ -175,8 +175,9 @@
static int pcm_open(u32_t sample_rate) {
int err, dir;
snd_pcm_uframes_t size;
-#define BUFFER_SIZE 8192 /*(8291 / 4)*/
-#define PERIOD_SIZE (BUFFER_SIZE / 4) /*(BUFFER_SIZE / 8)*/
+ unsigned int val;
+#define BUFFER_TIME 30000
+#define PERIOD_COUNT 3
if (handle && sample_rate == pcm_sample_rate) {
return 0;
@@ -243,14 +244,14 @@
}
/* set buffer and period times */
- size = BUFFER_SIZE;
- if ((err = snd_pcm_hw_params_set_buffer_size_near(handle, hwparams,
&size)) < 0) {
- DEBUG_ERROR("Unable to set buffer size %s", snd_strerror(err));
- return err;
- }
-
- size = PERIOD_SIZE;
- if ((err = snd_pcm_hw_params_set_period_size_near(handle, hwparams,
&size, &dir)) < 0) {
+ val = BUFFER_TIME;
+ if ((err = snd_pcm_hw_params_set_buffer_time_near(handle, hwparams,
&val, &dir)) < 0) {
+ DEBUG_ERROR("Unable to set buffer time %s", snd_strerror(err));
+ return err;
+ }
+
+ val = PERIOD_COUNT;
+ if ((err = snd_pcm_hw_params_set_periods_near(handle, hwparams, &val,
&dir)) < 0) {
DEBUG_ERROR("Unable to set period size %s", snd_strerror(err));
return err;
}
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