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Added possibility to disable also channel and format conversions + softvol.

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Unified disable option using mode bits in snd_pcm_open().
This commit is contained in:
Jaroslav Kysela 2008-01-11 17:21:44 +01:00
parent 6814d23d29
commit ab8331c882
3 changed files with 55 additions and 38 deletions
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61
src/pcm/pcm_softvol.c
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@ -969,34 +969,43 @@ int _snd_pcm_softvol_open(snd_pcm_t **pcmp, const char *name,
SNDERR("Invalid resolution value %d", resolution);
return -EINVAL;
}
err = snd_pcm_slave_conf(root, slave, &sconf, 1,
SND_PCM_HW_PARAM_FORMAT, 0, &sformat);
if (err < 0)
return err;
if (sformat != SND_PCM_FORMAT_UNKNOWN &&
sformat != SND_PCM_FORMAT_S16_LE &&
sformat != SND_PCM_FORMAT_S16_BE &&
sformat != SND_PCM_FORMAT_S24_3LE &&
sformat != SND_PCM_FORMAT_S32_LE &&
sformat != SND_PCM_FORMAT_S32_BE) {
SNDERR("only S16_LE, S16_BE, S24_3LE, S32_LE or S32_BE format "
"is supported");
if (mode & SND_PCM_NO_SOFTVOL) {
err = snd_pcm_slave_conf(root, slave, &sconf, 0);
if (err < 0)
return err;
err = snd_pcm_open_named_slave(pcmp, name, root, sconf, stream,
mode, conf);
snd_config_delete(sconf);
return -EINVAL;
} else {
snd_ctl_elem_id_alloca(&ctl_id);
err = snd_pcm_slave_conf(root, slave, &sconf, 1,
SND_PCM_HW_PARAM_FORMAT, 0, &sformat);
if (err < 0)
return err;
if (sformat != SND_PCM_FORMAT_UNKNOWN &&
sformat != SND_PCM_FORMAT_S16_LE &&
sformat != SND_PCM_FORMAT_S16_BE &&
sformat != SND_PCM_FORMAT_S24_3LE &&
sformat != SND_PCM_FORMAT_S32_LE &&
sformat != SND_PCM_FORMAT_S32_BE) {
SNDERR("only S16_LE, S16_BE, S24_3LE, S32_LE or S32_BE format "
"is supported");
snd_config_delete(sconf);
return -EINVAL;
}
err = snd_pcm_open_slave(&spcm, root, sconf, stream, mode, conf);
snd_config_delete(sconf);
if (err < 0)
return err;
if ((err = snd_pcm_parse_control_id(control, ctl_id, &card, &cchannels, NULL)) < 0) {
snd_pcm_close(spcm);
return err;
}
err = snd_pcm_softvol_open(pcmp, name, sformat, card, ctl_id, cchannels,
min_dB, max_dB, resolution, spcm, 1);
if (err < 0)
snd_pcm_close(spcm);
}
err = snd_pcm_open_slave(&spcm, root, sconf, stream, mode, conf);
snd_config_delete(sconf);
if (err < 0)
return err;
snd_ctl_elem_id_alloca(&ctl_id);
if ((err = snd_pcm_parse_control_id(control, ctl_id, &card, &cchannels, NULL)) < 0) {
snd_pcm_close(spcm);
return err;
}
err = snd_pcm_softvol_open(pcmp, name, sformat, card, ctl_id, cchannels,
min_dB, max_dB, resolution, spcm, 1);
if (err < 0)
snd_pcm_close(spcm);
return err;
}
#ifndef DOC_HIDDEN