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topology: Parse flags for PCM

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Users can define flags by both text conf file and C API.
Add flags and flag_mask to C API template of PCM object.

Signed-off-by: Mengdong Lin <mengdong.lin@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Mengdong Lin 2016-11-04 07:07:06 +08:00 • committed by Takashi Iwai
parent f94ed5cf75
commit b398ed4058
2 changed files with 56 additions and 0 deletions
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7
include/topology.h
View file

@ -607,6 +607,11 @@ extern "C" {
* "config3"
* ]
* }
*
* # Optional boolean flags
* symmetric_rates "true"
* symmetric_channels "true"
* symmetric_sample_bits "false"
* }
* </pre>
*
@ -894,6 +899,8 @@ struct snd_tplg_pcm_template {
unsigned int capture; /*!< supports capture mode */
unsigned int compress; /*!< 1 = compressed; 0 = PCM */
struct snd_tplg_stream_caps_template *caps[2]; /*!< playback & capture for DAI */
unsigned int flag_mask; /*!< bitmask of flags to configure */
unsigned int flags; /*!< flag value SND_SOC_TPLG_LNK_FLGBIT_* */
int num_streams; /*!< number of supported configs */
struct snd_tplg_stream_template stream[0]; /*!< supported configs */
};

49
src/topology/pcm.c
View file

@ -364,6 +364,24 @@ static int tplg_parse_fe_dai(snd_tplg_t *tplg ATTRIBUTE_UNUSED,
return 0;
}
/* parse a flag bit of the given mask */
static int parse_flag(snd_config_t *n, unsigned int mask_in,
unsigned int *mask, unsigned int *flags)
{
const char *val = NULL;
if (snd_config_get_string(n, &val) < 0)
return -EINVAL;
*mask |= mask_in;
if (strcmp(val, "true") == 0)
*flags |= mask_in;
else
*flags &= ~mask_in;
return 0;
}
/* Parse pcm (for front end DAI & DAI link) */
int tplg_parse_pcm(snd_tplg_t *tplg,
snd_config_t *cfg, void *private ATTRIBUTE_UNUSED)
@ -430,6 +448,34 @@ int tplg_parse_pcm(snd_tplg_t *tplg,
return err;
continue;
}
/* flags */
if (strcmp(id, "symmetric_rates") == 0) {
err = parse_flag(n,
SND_SOC_TPLG_LNK_FLGBIT_SYMMETRIC_RATES,
&pcm->flag_mask, &pcm->flags);
if (err < 0)
return err;
continue;
}
if (strcmp(id, "symmetric_channels") == 0) {
err = parse_flag(n,
SND_SOC_TPLG_LNK_FLGBIT_SYMMETRIC_CHANNELS,
&pcm->flag_mask, &pcm->flags);
if (err < 0)
return err;
continue;
}
if (strcmp(id, "symmetric_sample_bits") == 0) {
err = parse_flag(n,
SND_SOC_TPLG_LNK_FLGBIT_SYMMETRIC_SAMPLEBITS,
&pcm->flag_mask, &pcm->flags);
if (err < 0)
return err;
continue;
}
}
return 0;
@ -610,6 +656,9 @@ int tplg_add_pcm_object(snd_tplg_t *tplg, snd_tplg_obj_template_t *t)
tplg_add_stream_caps(&pcm->caps[i], pcm_tpl->caps[i]);
}
pcm->flag_mask = pcm_tpl->flag_mask;
pcm->flags = pcm_tpl->flags;
pcm->num_streams = pcm_tpl->num_streams;
for (i = 0; i < pcm_tpl->num_streams; i++)
tplg_add_stream_object(&pcm->stream[i], &pcm_tpl->stream[i]);