mirrors/alsa-lib
1
0
Fork 0
mirror of https://github.com/alsa-project/alsa-lib.git synced 2025-11-02 09:01:48 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

Fix possible noises and optimization with dmix

Browse source 
dmix transfers data in asynchronously so that it doesn't write on the
last active period.  This will allow the arbitrary buffer size in
future, too.

The hwsync call to slave is removed from commit and hwsync callbacks.
This hack was added to fix the noisy output (typically on xmms/bmp)
but it doesn't happen any more.  Now the hwsync behavior is as same as
on 1.0.8 (i.e. hwsync is called only when slowptr option is set).
This commit is contained in:
Takashi Iwai 2005-05-19 14:14:04 +00:00
parent 1cd04dba82
commit 5227c7e170
3 changed files with 54 additions and 25 deletions
Download patch file Download diff file Expand all files Collapse all files

2
src/pcm/pcm_direct.h
View file

@ -59,6 +59,7 @@ typedef struct {
snd_pcm_sw_params_t sw_params;
struct {
snd_pcm_uframes_t buffer_size;
snd_pcm_uframes_t period_size;
snd_pcm_uframes_t boundary;
snd_pcm_uframes_t channels;
unsigned int sample_bits;
@ -85,6 +86,7 @@ struct snd_pcm_direct {
snd_pcm_direct_share_t *shmptr; /* pointer to shared memory area */
snd_pcm_t *spcm; /* slave PCM handle */
snd_pcm_uframes_t appl_ptr;
snd_pcm_uframes_t last_appl_ptr;
snd_pcm_uframes_t hw_ptr;
snd_pcm_uframes_t avail_max;
snd_pcm_uframes_t slave_appl_ptr;