[alsa-devel] [PATCH 2/5] topology: Parse BE DAIs in text conf file
mengdong.lin at linux.intel.com
mengdong.lin at linux.intel.com
Mon Oct 3 17:04:01 CEST 2016
From: Guneshwor Singh <guneshwor.o.singh at intel.com>
Add support for parsing BE (Back End) DAIs in the text configuration file.
The syntax of BE DAIs is described in document in topology.h
Signed-off-by: Guneshwor Singh <guneshwor.o.singh at intel.com>
Signed-off-by: Mengdong Lin <mengdong.lin at linux.intel.com>
diff --git a/include/topology.h b/include/topology.h
index 0675b52..da45848 100644
--- a/include/topology.h
+++ b/include/topology.h
@@ -609,6 +609,33 @@ extern "C" {
* }
* </pre>
*
+ * <h4>Back End DAI</h4>
+ * A BE (Back End) DAI is defined as a new section that can include a
+ * unique ID, playback and capture stream capabilities and optional flags.
+ * <br> Its PCM stream capablities are same as those for PCM objects,
+ * please refer to section 'PCM Capabilities'.
+ *
+ * <pre>
+ * SectionBEDAI."name" {
+ *
+ * index "1" # Index number
+ *
+ * id "0" # used for binding to the Backend DAI
+ *
+ * pcm."playback" {
+ * capabilities "capabilities1" # capabilities for playback
+ * }
+ *
+ * pcm."capture" {
+ * capabilities "capabilities2" # capabilities for capture
+ * }
+ *
+ * symmetric_rates "true" # optional flags
+ * symmetric_channels "true"
+ * symmetric_sample_bits "false"
+ * }
+ * </pre>
+ *
* <h4>Manifest Private Data</h4>
* Manfiest may have private data. Users need to define a manifest section
* and add the references to 1 or multiple data sections. Please refer to
@@ -644,6 +671,7 @@ enum snd_tplg_type {
SND_TPLG_TYPE_PCM, /*!< PCM stream device */
SND_TPLG_TYPE_DAPM_WIDGET, /*!< DAPM widget */
SND_TPLG_TYPE_DAPM_GRAPH, /*!< DAPM graph elements */
+ SND_TPLG_TYPE_BE_DAI,
SND_TPLG_TYPE_BE, /*!< BE DAI link */
SND_TPLG_TYPE_CC, /*!< Hostless codec <-> codec link */
SND_TPLG_TYPE_MANIFEST, /*!< Topology manifest */
diff --git a/src/topology/data.c b/src/topology/data.c
index 59bc970..4798086 100644
--- a/src/topology/data.c
+++ b/src/topology/data.c
@@ -46,6 +46,10 @@ struct snd_soc_tplg_private *get_priv_data(struct tplg_elem *elem)
priv = &elem->widget->priv;
break;
+ case SND_TPLG_TYPE_BE_DAI:
+ priv = &elem->be_dai->priv;
+ break;
+
default:
SNDERR("error: '%s': no support for private data for type %d\n",
elem->id, elem->type);
diff --git a/src/topology/elem.c b/src/topology/elem.c
index 029c9ab..8b84257 100644
--- a/src/topology/elem.c
+++ b/src/topology/elem.c
@@ -189,6 +189,10 @@ struct tplg_elem* tplg_elem_new_common(snd_tplg_t *tplg,
list_add_tail(&elem->list, &tplg->pcm_list);
obj_size = sizeof(struct snd_soc_tplg_pcm);
break;
+ case SND_TPLG_TYPE_BE_DAI:
+ list_add_tail(&elem->list, &tplg->be_dai_list);
+ obj_size = sizeof(struct snd_soc_tplg_be_dai);
+ break;
case SND_TPLG_TYPE_BE:
list_add_tail(&elem->list, &tplg->be_list);
obj_size = sizeof(struct snd_soc_tplg_link_config);
diff --git a/src/topology/parser.c b/src/topology/parser.c
index 3ab64f4..aa1b33e 100644
--- a/src/topology/parser.c
+++ b/src/topology/parser.c
@@ -133,6 +133,14 @@ static int tplg_parse_config(snd_tplg_t *tplg, snd_config_t *cfg)
continue;
}
+ if (strcmp(id, "SectionBEDAI") == 0) {
+ err = tplg_parse_compound(tplg, n,
+ tplg_parse_be_dai, NULL);
+ if (err < 0)
+ return err;
+ continue;
+ }
+
if (strcmp(id, "SectionBE") == 0) {
err = tplg_parse_compound(tplg, n, tplg_parse_be,
NULL);
@@ -440,6 +448,7 @@ snd_tplg_t *snd_tplg_new(void)
INIT_LIST_HEAD(&tplg->tlv_list);
INIT_LIST_HEAD(&tplg->widget_list);
INIT_LIST_HEAD(&tplg->pcm_list);
+ INIT_LIST_HEAD(&tplg->be_dai_list);
INIT_LIST_HEAD(&tplg->be_list);
INIT_LIST_HEAD(&tplg->cc_list);
INIT_LIST_HEAD(&tplg->route_list);
@@ -465,6 +474,7 @@ void snd_tplg_free(snd_tplg_t *tplg)
tplg_elem_free_list(&tplg->tlv_list);
tplg_elem_free_list(&tplg->widget_list);
tplg_elem_free_list(&tplg->pcm_list);
+ tplg_elem_free_list(&tplg->be_dai_list);
tplg_elem_free_list(&tplg->be_list);
tplg_elem_free_list(&tplg->cc_list);
tplg_elem_free_list(&tplg->route_list);
diff --git a/src/topology/pcm.c b/src/topology/pcm.c
index 0a90cb9..7e2f68f 100644
--- a/src/topology/pcm.c
+++ b/src/topology/pcm.c
@@ -266,6 +266,7 @@ static int tplg_parse_streams(snd_tplg_t *tplg ATTRIBUTE_UNUSED,
snd_config_t *n;
struct tplg_elem *elem = private;
struct snd_soc_tplg_pcm *pcm;
+ struct snd_soc_tplg_be_dai *be_dai;
unsigned int *playback, *capture;
struct snd_soc_tplg_stream_caps *caps;
const char *id, *value;
@@ -282,6 +283,14 @@ static int tplg_parse_streams(snd_tplg_t *tplg ATTRIBUTE_UNUSED,
capture = &pcm->capture;
caps = pcm->caps;
break;
+
+ case SND_TPLG_TYPE_BE_DAI:
+ be_dai = elem->be_dai;
+ playback = &be_dai->playback;
+ capture = &be_dai->capture;
+ caps = be_dai->caps;
+ break;
+
default:
return -EINVAL;
}
@@ -435,6 +444,123 @@ int tplg_parse_pcm(snd_tplg_t *tplg,
return 0;
}
+static int get_be_dai_flag(snd_config_t *n,
+ struct snd_soc_tplg_be_dai *be_dai, unsigned int mask)
+{
+ const char *val = NULL;
+
+ if (snd_config_get_string(n, &val) < 0)
+ return -EINVAL;
+
+ be_dai->flag_mask |= mask;
+ if (strcmp(val, "true") == 0)
+ be_dai->flags |= mask;
+ else
+ be_dai->flags &= ~mask;
+
+ return 0;
+}
+
+/* Parse back end DAI */
+int tplg_parse_be_dai(snd_tplg_t *tplg,
+ snd_config_t *cfg, void *private ATTRIBUTE_UNUSED)
+{
+ struct snd_soc_tplg_be_dai *be_dai;
+ struct tplg_elem *elem;
+ snd_config_iterator_t i, next;
+ snd_config_t *n;
+ const char *id, *val = NULL;
+ int err;
+
+ elem = tplg_elem_new_common(tplg, cfg, NULL, SND_TPLG_TYPE_BE_DAI);
+ if (!elem)
+ return -ENOMEM;
+
+ be_dai = elem->be_dai;
+ be_dai->size = elem->size;
+ elem_copy_text(be_dai->dai_name, elem->id,
+ SNDRV_CTL_ELEM_ID_NAME_MAXLEN);
+
+ tplg_dbg(" BE DAI: %s\n", elem->id);
+
+ snd_config_for_each(i, next, cfg) {
+
+ n = snd_config_iterator_entry(i);
+ if (snd_config_get_id(n, &id) < 0)
+ continue;
+
+ /* skip comments */
+ if (strcmp(id, "comment") == 0)
+ continue;
+ if (id[0] == '#')
+ continue;
+
+ if (strcmp(id, "index") == 0) {
+ if (snd_config_get_string(n, &val) < 0)
+ return -EINVAL;
+
+ elem->index = atoi(val);
+ tplg_dbg("\t%s: %d\n", id, elem->index);
+ continue;
+ }
+
+ if (strcmp(id, "id") == 0) {
+ if (snd_config_get_string(n, &val) < 0)
+ return -EINVAL;
+
+ be_dai->dai_id = atoi(val);
+ tplg_dbg("\t%s: %d\n", id, be_dai->dai_id);
+ continue;
+ }
+
+ /* stream capabilities */
+ if (strcmp(id, "pcm") == 0) {
+ err = tplg_parse_compound(tplg, n,
+ tplg_parse_streams, elem);
+ if (err < 0)
+ return err;
+ continue;
+ }
+
+ /* flags */
+ if (strcmp(id, "symmetric_rates") == 0) {
+ err = get_be_dai_flag(n, be_dai,
+ SND_SOC_TPLG_DAI_FLGBIT_SYMMETRIC_RATES);
+ if (err < 0)
+ return err;
+ continue;
+ }
+
+ if (strcmp(id, "symmetric_channels") == 0) {
+ err = get_be_dai_flag(n, be_dai,
+ SND_SOC_TPLG_DAI_FLGBIT_SYMMETRIC_CHANNELS);
+ if (err < 0)
+ return err;
+ continue;
+ }
+
+ if (strcmp(id, "symmetric_sample_bits") == 0) {
+ err = get_be_dai_flag(n, be_dai,
+ SND_SOC_TPLG_DAI_FLGBIT_SYMMETRIC_SAMPLEBITS);
+ if (err < 0)
+ return err;
+ continue;
+ }
+
+ /* private data */
+ if (strcmp(id, "data") == 0) {
+ if (snd_config_get_string(n, &val) < 0)
+ return -EINVAL;
+
+ tplg_ref_add(elem, SND_TPLG_TYPE_DATA, val);
+ tplg_dbg("\t%s: %s\n", id, val);
+ continue;
+ }
+ }
+
+ return 0;
+}
+
int tplg_parse_be(snd_tplg_t *tplg,
snd_config_t *cfg, void *private ATTRIBUTE_UNUSED)
{
diff --git a/src/topology/tplg_local.h b/src/topology/tplg_local.h
index cfde4cc..e548ade 100644
--- a/src/topology/tplg_local.h
+++ b/src/topology/tplg_local.h
@@ -64,6 +64,7 @@ struct snd_tplg {
struct list_head tlv_list;
struct list_head widget_list;
struct list_head pcm_list;
+ struct list_head be_dai_list;
struct list_head be_list;
struct list_head cc_list;
struct list_head route_list;
@@ -144,6 +145,7 @@ struct tplg_elem {
struct snd_soc_tplg_bytes_control *bytes_ext;
struct snd_soc_tplg_dapm_widget *widget;
struct snd_soc_tplg_pcm *pcm;
+ struct snd_soc_tplg_be_dai *be_dai;
struct snd_soc_tplg_link_config *be;
struct snd_soc_tplg_link_config *cc;
struct snd_soc_tplg_dapm_graph_elem *route;
@@ -221,6 +223,9 @@ int tplg_parse_stream_caps(snd_tplg_t *tplg,
int tplg_parse_pcm(snd_tplg_t *tplg,
snd_config_t *cfg, void *private ATTRIBUTE_UNUSED);
+int tplg_parse_be_dai(snd_tplg_t *tplg,
+ snd_config_t *cfg, void *private ATTRIBUTE_UNUSED);
+
int tplg_parse_be(snd_tplg_t *tplg,
snd_config_t *cfg, void *private ATTRIBUTE_UNUSED);
--
2.5.0
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