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can't adjust dmix's buffer size, so print a message when it seems it's 

likely to be an issue
This commit is contained in:
Bill Currie 2005-08-12 02:39:37 +00:00
parent 3fb03fc2be
commit 6705140f76
2 changed files with 4 additions and 8 deletions
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2
include/alsa_funcs_list.h
View File

@ -45,7 +45,7 @@ QF_ALSA_NEED (snd_pcm_uframes_t, snd_pcm_hw_params_set_period_size_near, (snd_pc
QF_ALSA_NEED (unsigned int, snd_pcm_hw_params_set_rate_near, (snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int *dir))
#else
QF_ALSA_NEED (int, snd_pcm_hw_params_get_buffer_size, (const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val))
QF_ALSA_NEED (int, snd_pcm_hw_params_set_buffer_size, (snd_pcm_t *pcm, const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val))
QF_ALSA_NEED (int, snd_pcm_hw_params_set_buffer_size, (snd_pcm_t *pcm, const snd_pcm_hw_params_t *params, snd_pcm_uframes_t val))
QF_ALSA_NEED (int, snd_pcm_hw_params_get_period_size, (const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *frames, int *dir))
QF_ALSA_NEED (int, snd_pcm_hw_params_set_access, (snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t access))
QF_ALSA_NEED (int, snd_pcm_hw_params_set_period_size_near, (snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val, int *dir))

10
libs/audio/targets/snd_alsa.c
View File

@ -338,13 +338,9 @@ SNDDMA_Init (void)
goto error;
}
if (buffer_size != round_buffer_size (buffer_size)) {
buffer_size = round_buffer_size (buffer_size);
err = qfsnd_pcm_hw_params_set_buffer_size (pcm, hw, &buffer_size);
if (0 > err) {
Sys_Printf ("ALSA: unable to set buffer size. %s\n",
qfsnd_strerror (err));
goto error;
}
Sys_Printf ("ALSA: WARNING: non-power of 2 buffer size. sound may be unsatisfactory\n");
Sys_Printf ("recommend using either the plughw, or hw devices or adjusting dmix\n");
Sys_Printf ("to have a power of 2 buffer size\n");
}
sn.samples = buffer_size * sn.channels; // mono samples in buffer