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topology: Refactor functions to parse and build streams

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Previously these functions are only used by pcm elements (front-end DAI
& DAI link) to parse stream capablities. Now refactor them to be reused
by back-end DAI elements later.

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 2016-04-29 11:03:04 +08:00 • committed by Takashi Iwai
parent e64334df2b
commit 86ec8b4900
3 changed files with 36 additions and 28 deletions
Download patch file Download diff file Expand all files Collapse all files

60
src/topology/pcm.c
View file

@ -40,9 +40,9 @@ struct tplg_elem *lookup_pcm_dai_stream(struct list_head *base, const char* id)
return NULL;
}
/* copy referenced caps to the pcm */
static void copy_pcm_caps(const char *id, struct snd_soc_tplg_stream_caps *caps,
struct tplg_elem *ref_elem)
/* copy referenced caps to the parent (pcm or be dai) */
static void copy_stream_caps(const char *id,
struct snd_soc_tplg_stream_caps *caps, struct tplg_elem *ref_elem)
{
struct snd_soc_tplg_stream_caps *ref_caps = ref_elem->stream_caps;
@ -52,24 +52,19 @@ static void copy_pcm_caps(const char *id, struct snd_soc_tplg_stream_caps *caps,
*caps = *ref_caps;
}
/* check referenced config and caps for a pcm */
static int tplg_build_pcm_caps(snd_tplg_t *tplg, struct tplg_elem *elem)
/* find and copy the referenced stream caps */
static int tplg_build_stream_caps(snd_tplg_t *tplg,
const char *id, struct snd_soc_tplg_stream_caps *caps)
{
struct tplg_elem *ref_elem = NULL;
struct snd_soc_tplg_pcm *pcm;
struct snd_soc_tplg_stream_caps *caps;
unsigned int i;
pcm = elem->pcm;
for (i = 0; i < 2; i++) {
caps = &pcm->caps[i];
ref_elem = tplg_elem_lookup(&tplg->pcm_caps_list,
caps->name, SND_TPLG_TYPE_STREAM_CAPS);
caps[i].name, SND_TPLG_TYPE_STREAM_CAPS);
if (ref_elem != NULL)
copy_pcm_caps(elem->id, caps, ref_elem);
copy_stream_caps(id, &caps[i], ref_elem);
}
return 0;
@ -91,7 +86,7 @@ int tplg_build_pcm(snd_tplg_t *tplg, unsigned int type)
return -EINVAL;
}
err = tplg_build_pcm_caps(tplg, elem);
err = tplg_build_stream_caps(tplg, elem->id, elem->pcm->caps);
if (err < 0)
return err;
@ -184,8 +179,8 @@ static int split_format(struct snd_soc_tplg_stream_caps *caps, char *str)
return 0;
}
/* Parse pcm Capabilities */
int tplg_parse_pcm_caps(snd_tplg_t *tplg,
/* Parse pcm stream capabilities */
int tplg_parse_stream_caps(snd_tplg_t *tplg,
snd_config_t *cfg, void *private ATTRIBUTE_UNUSED)
{
struct snd_soc_tplg_stream_caps *sc;
@ -263,29 +258,40 @@ int tplg_parse_pcm_caps(snd_tplg_t *tplg,
return 0;
}
/* Parse the caps of a pcm stream */
int tplg_parse_stream_caps(snd_tplg_t *tplg, snd_config_t *cfg,
/* Parse the caps and config of a pcm stream */
static int tplg_parse_streams(snd_tplg_t *tplg, snd_config_t *cfg,
void *private)
{
snd_config_iterator_t i, next;
snd_config_t *n;
struct tplg_elem *elem = private;
struct snd_soc_tplg_pcm *pcm;
unsigned int *playback, *capture;
struct snd_soc_tplg_stream_caps *caps;
const char *id, *value;
int stream;
pcm = elem->pcm;
snd_config_get_id(cfg, &id);
tplg_dbg("\t%s:\n", id);
switch (elem->type) {
case SND_TPLG_TYPE_PCM:
pcm = elem->pcm;
playback = &pcm->playback;
capture = &pcm->capture;
caps = pcm->caps;
break;
default:
return -EINVAL;
}
if (strcmp(id, "playback") == 0) {
stream = SND_SOC_TPLG_STREAM_PLAYBACK;
pcm->playback = 1;
*playback = 1;
} else if (strcmp(id, "capture") == 0) {
stream = SND_SOC_TPLG_STREAM_CAPTURE;
pcm->capture = 1;
*capture = 1;
} else
return -EINVAL;
@ -300,8 +306,10 @@ int tplg_parse_stream_caps(snd_tplg_t *tplg, snd_config_t *cfg,
if (strcmp(id, "capabilities") == 0) {
if (snd_config_get_string(n, &value) < 0)
continue;
elem_copy_text(pcm->caps[stream].name, value,
/* store stream caps name, to find and merge
* the caps in building phase.
*/
elem_copy_text(caps[stream].name, value,
SNDRV_CTL_ELEM_ID_NAME_MAXLEN);
tplg_dbg("\t\t%s\n\t\t\t%s\n", id, value);
@ -312,7 +320,7 @@ int tplg_parse_stream_caps(snd_tplg_t *tplg, snd_config_t *cfg,
return 0;
}
/* Parse pcm */
/* Parse pcm (for front end DAI & DAI link) */
int tplg_parse_pcm(snd_tplg_t *tplg,
snd_config_t *cfg, void *private ATTRIBUTE_UNUSED)
{
@ -365,7 +373,7 @@ int tplg_parse_pcm(snd_tplg_t *tplg,
if (strcmp(id, "pcm") == 0) {
err = tplg_parse_compound(tplg, n,
tplg_parse_stream_caps, elem);
tplg_parse_streams, elem);
if (err < 0)
return err;
continue;