[alsa-devel] [PATCH 05/13] topology: Add PCM parser.
Takashi Iwai
tiwai at suse.de
Mon Jun 29 20:37:37 CEST 2015
At Mon, 29 Jun 2015 17:32:50 +0100,
Liam Girdwood wrote:
>
> Parse PCM configurations and capabilities. These can then be used to define
> the capabilities and config for FE DAI links, PCM devices and
> codec <-> codec style links.
>
> Signed-off-by: Liam Girdwood <liam.r.girdwood at linux.intel.com>
> ---
> src/topology/pcm.c | 782 +++++++++++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 782 insertions(+)
> create mode 100644 src/topology/pcm.c
>
> diff --git a/src/topology/pcm.c b/src/topology/pcm.c
> new file mode 100644
> index 0000000..476af55
> --- /dev/null
> +++ b/src/topology/pcm.c
> @@ -0,0 +1,782 @@
> +/*
> + Copyright(c) 2014-2015 Intel Corporation
> + All rights reserved.
> +
> + This program is free software; you can redistribute it and/or modify
> + it under the terms of version 2 of the GNU General Public License as
> + published by the Free Software Foundation.
> +
> + This program is distributed in the hope that it will be useful, but
> + WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + General Public License for more details.
> +
> + Authors: Mengdong Lin <mengdong.lin at intel.com>
> + Yao Jin <yao.jin at intel.com>
> + Liam Girdwood <liam.r.girdwood at linux.intel.com>
> +*/
> +
> +#include "list.h"
> +#include "tplg_local.h"
> +
> +/* mapping of format text names to types */
> +static const struct map_elem pcm_format_map[] = {
> + {"S16_LE", SNDRV_PCM_FORMAT_S16_LE},
> + {"S16_BE", SNDRV_PCM_FORMAT_S16_BE},
> + {"U16_LE", SNDRV_PCM_FORMAT_U16_LE},
> + {"U16_BE", SNDRV_PCM_FORMAT_U16_BE},
> + {"S24_LE", SNDRV_PCM_FORMAT_S24_LE},
> + {"S24_BE", SNDRV_PCM_FORMAT_S24_BE},
> + {"U24_LE", SNDRV_PCM_FORMAT_U24_LE},
> + {"U24_BE", SNDRV_PCM_FORMAT_U24_BE},
> + {"S32_LE", SNDRV_PCM_FORMAT_S32_LE},
> + {"S32_BE", SNDRV_PCM_FORMAT_S32_BE},
> + {"U32_LE", SNDRV_PCM_FORMAT_U32_LE},
> + {"U32_BE", SNDRV_PCM_FORMAT_U32_BE},
> +};
> +
> +static int lookup_pcm_format(const char *c, snd_pcm_format_t *format)
> +{
> + unsigned int i;
> +
> + for (i = 0; i < ARRAY_SIZE(pcm_format_map); i++) {
> + if (strcmp(pcm_format_map[i].name, c) == 0) {
> + *format = pcm_format_map[i].id;
> + return 0;
> + }
> + }
> +
> + return -EINVAL;
> +}
You can use snd_pcm_format_value(), I suppose.
Takashi
> +
> +struct tplg_elem *lookup_pcm_dai_stream(struct list_head *base, const char* id)
> +{
> + struct list_head *pos, *npos;
> + struct tplg_elem *elem;
> + struct snd_soc_tplg_pcm_dai *pcm_dai;
> +
> + list_for_each_safe(pos, npos, base) {
> +
> + elem = list_entry(pos, struct tplg_elem, list);
> + if (elem->type != PARSER_TYPE_PCM)
> + return NULL;
> +
> + pcm_dai = elem->pcm;
> +
> + if (pcm_dai && (!strcmp(pcm_dai->capconf[0].caps.name, id)
> + || !strcmp(pcm_dai->capconf[1].caps.name, id)))
> + return elem;
> + }
> +
> + 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)
> +{
> + struct snd_soc_tplg_stream_caps *ref_caps = ref_elem->stream_caps;
> +
> + tplg_dbg("Copy pcm caps (%ld bytes) from '%s' to '%s' \n",
> + sizeof(*caps), ref_elem->id, id);
> +
> + memcpy((void*)caps, ref_caps, sizeof(*caps));
> +}
> +
> +/* copy referenced config to the pcm */
> +static void copy_pcm_config(const char *id,
> + struct snd_soc_tplg_stream_config *cfg, struct tplg_elem *ref_elem)
> +{
> + struct snd_soc_tplg_stream_config *ref_cfg = ref_elem->stream_cfg;
> +
> + tplg_dbg("Copy pcm config (%ld bytes) from '%s' to '%s' \n",
> + sizeof(*cfg), ref_elem->id, id);
> +
> + memcpy((void*)cfg, ref_cfg, sizeof(*cfg));
> +}
> +
> +/* check referenced config and caps for a pcm */
> +static int tplg_build_pcm_cfg_caps(snd_tplg_t *tplg, struct tplg_elem *elem)
> +{
> + struct tplg_elem *ref_elem = NULL;
> + struct snd_soc_tplg_pcm_cfg_caps *capconf;
> + struct snd_soc_tplg_pcm_dai *pcm_dai;
> + unsigned int i, j;
> +
> + switch (elem->type) {
> + case PARSER_TYPE_PCM:
> + pcm_dai = elem->pcm;
> + break;
> + case PARSER_TYPE_BE:
> + pcm_dai = elem->be;
> + break;
> + case PARSER_TYPE_CC:
> + pcm_dai = elem->cc;
> + break;
> + default:
> + return -EINVAL;
> + }
> +
> + for (i = 0; i < 2; i++) {
> + capconf = &pcm_dai->capconf[i];
> +
> + ref_elem = tplg_elem_lookup(&tplg->pcm_caps_list,
> + capconf->caps.name, PARSER_TYPE_STREAM_CAPS);
> +
> + if (ref_elem != NULL)
> + copy_pcm_caps(elem->id, &capconf->caps, ref_elem);
> +
> + for (j = 0; j < capconf->num_configs; j++) {
> + ref_elem = tplg_elem_lookup(&tplg->pcm_config_list,
> + capconf->configs[j].name,
> + PARSER_TYPE_STREAM_CONFIG);
> +
> + if (ref_elem != NULL)
> + copy_pcm_config(elem->id,
> + &capconf->configs[j],
> + ref_elem);
> + }
> + }
> +
> + return 0;
> +}
> +
> +int tplg_build_pcm_dai(snd_tplg_t *tplg, unsigned int type)
> +{
> + struct list_head *base, *pos, *npos;
> + struct tplg_elem *elem;
> + int err = 0;
> +
> + switch (type) {
> + case PARSER_TYPE_PCM:
> + base = &tplg->pcm_list;
> + break;
> + case PARSER_TYPE_BE:
> + base = &tplg->be_list;
> + break;
> + case PARSER_TYPE_CC:
> + base = &tplg->cc_list;
> + break;
> + default:
> + return -EINVAL;
> + }
> +
> + list_for_each_safe(pos, npos, base) {
> +
> + elem = list_entry(pos, struct tplg_elem, list);
> + if (elem->type != type) {
> + fprintf(stderr, "error: invalid elem '%s'\n", elem->id);
> + return -EINVAL;
> + }
> +
> + err = tplg_build_pcm_cfg_caps(tplg, elem);
> + if (err < 0)
> + return err;
> + }
> +
> + return 0;
> +}
> +
> +/* PCM stream configuration
> + *
> + * Describes the PCM configuration for playback and capture streams.
> + *
> + * config."name" {
> + * format "S24_LE"
> + * rate "48000"
> + * channels "2"
> + * tdm_slot "0xf"
> + * }
> + */
> +static int tplg_parse_stream_cfg(snd_tplg_t *tplg ATTRIBUTE_UNUSED,
> + snd_config_t *cfg, void *private)
> +{
> + snd_config_iterator_t i, next;
> + snd_config_t *n;
> + struct snd_soc_tplg_stream_config *sc = private;
> + struct snd_soc_tplg_stream *stream;
> + const char *id, *val;
> + snd_pcm_format_t format;
> + int ret;
> +
> + snd_config_get_id(cfg, &id);
> +
> + if (strcmp(id, "playback") == 0)
> + stream = &sc->playback;
> + else if (strcmp(id, "capture") == 0)
> + stream = &sc->capture;
> + else
> + return -EINVAL;
> +
> + tplg_dbg("\t%s:\n", id);
> +
> + stream->size = sizeof(*stream);
> +
> + snd_config_for_each(i, next, cfg) {
> +
> + n = snd_config_iterator_entry(i);
> +
> + if (snd_config_get_id(n, &id) < 0)
> + return -EINVAL;
> +
> + if (snd_config_get_string(n, &val) < 0)
> + return -EINVAL;
> +
> + if (strcmp(id, "format") == 0) {
> + ret = lookup_pcm_format(val, &format);
> + if (ret < 0) {
> + fprintf(stderr, "error: unsupported stream format %s\n",
> + val);
> + return -EINVAL;
> + }
> +
> + stream->format = format;
> + tplg_dbg("\t\t%s: %s\n", id, val);
> + continue;
> + }
> +
> + if (strcmp(id, "rate") == 0) {
> + stream->rate = atoi(val);
> + tplg_dbg("\t\t%s: %d\n", id, stream->rate);
> + continue;
> + }
> +
> + if (strcmp(id, "channels") == 0) {
> + stream->channels = atoi(val);
> + tplg_dbg("\t\t%s: %d\n", id, stream->channels);
> + continue;
> + }
> +
> + if (strcmp(id, "tdm_slot") == 0) {
> + stream->tdm_slot = strtol(val, NULL, 16);
> + tplg_dbg("\t\t%s: 0x%x\n", id, stream->tdm_slot);
> + continue;
> + }
> + }
> +
> + return 0;
> +}
> +
> +/* Parse pcm configuration
> + *
> + * SectionPCMConfig."PCM config name" {
> + *
> + * config."playback" {
> + *
> + * }
> + *
> + * config."capture" {
> + *
> + * }
> + * }
> + */
> +int tplg_parse_pcm_config(snd_tplg_t *tplg,
> + snd_config_t *cfg, void *private ATTRIBUTE_UNUSED)
> +{
> + struct snd_soc_tplg_stream_config *sc;
> + struct tplg_elem *elem;
> + snd_config_iterator_t i, next;
> + snd_config_t *n;
> + const char *id;
> + int err;
> +
> + elem = tplg_elem_new_common(tplg, cfg, PARSER_TYPE_STREAM_CONFIG);
> + if (!elem)
> + return -ENOMEM;
> +
> + sc = elem->stream_cfg;
> + sc->size = elem->size;
> +
> + tplg_dbg(" PCM Config: %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, "config") == 0) {
> + err = tplg_parse_compound(tplg, n,
> + tplg_parse_stream_cfg, sc);
> + if (err < 0)
> + return err;
> + continue;
> + }
> + }
> +
> + return 0;
> +}
> +
> +static int split_format(struct snd_soc_tplg_stream_caps *caps, char *str)
> +{
> + char *s = NULL;
> + snd_pcm_format_t format;
> + int i = 0, ret;
> +
> + s = strtok(str, ",");
> + while ((s != NULL) && (i < SND_SOC_TPLG_MAX_FORMATS)) {
> + ret = lookup_pcm_format(s, &format);
> + if (ret < 0) {
> + fprintf(stderr, "error: unsupported stream format %s\n", s);
> + return -EINVAL;
> + }
> +
> + caps->formats[i] = format;
> + s = strtok(NULL, ", ");
> + i++;
> + }
> +
> + return 0;
> +}
> +
> +/* Parse pcm Capabilities
> + *
> + * SectionPCMCapabilities." PCM capabilities name" {
> + *
> + * formats "S24_LE,S16_LE"
> + * rate_min "48000"
> + * rate_max "48000"
> + * channels_min "2"
> + * channels_max "2"
> + * }
> + */
> +int tplg_parse_pcm_caps(snd_tplg_t *tplg,
> + snd_config_t *cfg, void *private ATTRIBUTE_UNUSED)
> +{
> + struct snd_soc_tplg_stream_caps *sc;
> + struct tplg_elem *elem;
> + snd_config_iterator_t i, next;
> + snd_config_t *n;
> + const char *id, *val;
> + char *s;
> + int err;
> +
> + elem = tplg_elem_new_common(tplg, cfg, PARSER_TYPE_STREAM_CAPS);
> + if (!elem)
> + return -ENOMEM;
> +
> + sc = elem->stream_caps;
> + sc->size = elem->size;
> + strncpy(sc->name, elem->id, SNDRV_CTL_ELEM_ID_NAME_MAXLEN);
> +
> + tplg_dbg(" PCM Capabilities: %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 (snd_config_get_string(n, &val) < 0)
> + return -EINVAL;
> +
> + if (strcmp(id, "formats") == 0) {
> + s = strdup(val);
> + if (s == NULL)
> + return -ENOMEM;
> +
> + err = split_format(sc, s);
> + free(s);
> +
> + if (err < 0)
> + return err;
> +
> + tplg_dbg("\t\t%s: %s\n", id, val);
> + continue;
> + }
> +
> + if (strcmp(id, "rate_min") == 0) {
> + sc->rate_min = atoi(val);
> + tplg_dbg("\t\t%s: %d\n", id, sc->rate_min);
> + continue;
> + }
> +
> + if (strcmp(id, "rate_max") == 0) {
> + sc->rate_max = atoi(val);
> + tplg_dbg("\t\t%s: %d\n", id, sc->rate_max);
> + continue;
> + }
> +
> + if (strcmp(id, "channels_min") == 0) {
> + sc->channels_min = atoi(val);
> + tplg_dbg("\t\t%s: %d\n", id, sc->channels_min);
> + continue;
> + }
> +
> + if (strcmp(id, "channels_max") == 0) {
> + sc->channels_max = atoi(val);
> + tplg_dbg("\t\t%s: %d\n", id, sc->channels_max);
> + continue;
> + }
> + }
> +
> + return 0;
> +}
> +
> +static int tplg_parse_pcm_cfg(snd_tplg_t *tplg ATTRIBUTE_UNUSED,
> + snd_config_t *cfg, void *private)
> +{
> + struct snd_soc_tplg_pcm_cfg_caps *capconf = private;
> + struct snd_soc_tplg_stream_config *configs = capconf->configs;
> + unsigned int *num_configs = &capconf->num_configs;
> + const char *value;
> +
> + if (*num_configs == SND_SOC_TPLG_STREAM_CONFIG_MAX)
> + return -EINVAL;
> +
> + if (snd_config_get_string(cfg, &value) < 0)
> + return EINVAL;
> +
> + strncpy(configs[*num_configs].name, value,
> + SNDRV_CTL_ELEM_ID_NAME_MAXLEN);
> +
> + *num_configs += 1;
> +
> + tplg_dbg("\t\t\t%s\n", value);
> +
> + return 0;
> +}
> +
> +/* Parse the cap and config of a pcm.
> + *
> + * pcm."name" {
> + *
> + * capabilities "System playback"
> + *
> + * configs [
> + * "PCM 48k Stereo 24bit"
> + * "PCM 48k Stereo 16bit"
> + * ]
> + * }
> + */
> +int tplg_parse_pcm_cap_cfg(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_dai *pcm_dai;
> + const char *id, *value;
> + int err, stream;
> +
> + if (elem->type == PARSER_TYPE_PCM)
> + pcm_dai = elem->pcm;
> + else if (elem->type == PARSER_TYPE_BE)
> + pcm_dai = elem->be;
> + else if (elem->type == PARSER_TYPE_CC)
> + pcm_dai = elem->cc;
> + else
> + return -EINVAL;
> +
> + snd_config_get_id(cfg, &id);
> +
> + tplg_dbg("\t%s:\n", id);
> +
> + if (strcmp(id, "playback") == 0)
> + stream = SND_SOC_TPLG_STREAM_PLAYBACK;
> + else if (strcmp(id, "capture") == 0)
> + stream = SND_SOC_TPLG_STREAM_CAPTURE;
> + else
> + return -EINVAL;
> +
> + snd_config_for_each(i, next, cfg) {
> +
> + n = snd_config_iterator_entry(i);
> +
> + /* get id */
> + if (snd_config_get_id(n, &id) < 0)
> + continue;
> +
> + if (strcmp(id, "capabilities") == 0) {
> + if (snd_config_get_string(n, &value) < 0)
> + continue;
> +
> + strncpy(pcm_dai->capconf[stream].caps.name, value,
> + SNDRV_CTL_ELEM_ID_NAME_MAXLEN);
> +
> + tplg_dbg("\t\t%s\n\t\t\t%s\n", id, value);
> + continue;
> + }
> +
> + if (strcmp(id, "configs") == 0) {
> + tplg_dbg("\t\tconfigs:\n");
> + err = tplg_parse_compound(tplg, n, tplg_parse_pcm_cfg,
> + &pcm_dai->capconf[stream]);
> + if (err < 0)
> + return err;
> + continue;
> + }
> + }
> +
> + return 0;
> +}
> +
> +/* Parse pcm
> + *
> + * SectionPCM."System Pin" {
> + *
> + * index "1"
> + *
> + * # used for binding to the PCM
> + * ID "0"
> + *
> + * pcm."playback" {
> + * capabilities "System Playback"
> + * config "PCM 48k Stereo 24bit"
> + * config "PCM 48k Stereo 16bit"
> + * }
> + *
> + * pcm."capture" {
> + * capabilities "Analog Capture"
> + * config "PCM 48k Stereo 24bit"
> + * config "PCM 48k Stereo 16bit"
> + * config "PCM 48k 2P/4C 16bit"
> + * }
> + * }
> + */
> +int tplg_parse_pcm(snd_tplg_t *tplg,
> + snd_config_t *cfg, void *private ATTRIBUTE_UNUSED)
> +{
> + struct snd_soc_tplg_pcm_dai *pcm_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, PARSER_TYPE_PCM);
> + if (!elem)
> + return -ENOMEM;
> +
> + pcm_dai = elem->pcm;
> + pcm_dai->size = elem->size;
> + strncpy(pcm_dai->name, elem->id, SNDRV_CTL_ELEM_ID_NAME_MAXLEN);
> +
> + tplg_dbg(" PCM: %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;
> +
> + pcm_dai->id = atoi(val);
> + tplg_dbg("\t%s: %d\n", id, pcm_dai->id);
> + continue;
> + }
> +
> + if (strcmp(id, "pcm") == 0) {
> + err = tplg_parse_compound(tplg, n,
> + tplg_parse_pcm_cap_cfg, elem);
> + if (err < 0)
> + return err;
> + continue;
> + }
> + }
> +
> + return 0;
> +}
> +
> +/* Parse be
> + *
> + * SectionBE."SSP0-Codec" {
> + *
> + * index "1"
> + *
> + * # used for binding to the PCM
> + * ID "0"
> + *
> + * be."playback" {
> + * capabilities "System Playback"
> + * config "PCM 48k Stereo 24bit"
> + * config "PCM 48k Stereo 16bit"
> + * }
> + *
> + * be."capture" {
> + * capabilities "Analog Capture"
> + * config "PCM 48k Stereo 24bit"
> + * config "PCM 48k Stereo 16bit"
> + * config "PCM 48k 2P/4C 16bit"
> + * }
> + * }
> + */
> +int tplg_parse_be(snd_tplg_t *tplg,
> + snd_config_t *cfg, void *private ATTRIBUTE_UNUSED)
> +{
> + struct snd_soc_tplg_pcm_dai *pcm_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, PARSER_TYPE_BE);
> + if (!elem)
> + return -ENOMEM;
> +
> + pcm_dai = elem->be;
> + pcm_dai->size = elem->size;
> + strncpy(pcm_dai->name, elem->id, SNDRV_CTL_ELEM_ID_NAME_MAXLEN);
> +
> + tplg_dbg(" BE: %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;
> +
> + pcm_dai->id = atoi(val);
> + tplg_dbg("\t%s: %d\n", id, pcm_dai->id);
> + continue;
> + }
> +
> + if (strcmp(id, "be") == 0) {
> + err = tplg_parse_compound(tplg, n,
> + tplg_parse_pcm_cap_cfg, elem);
> + if (err < 0)
> + return err;
> + continue;
> + }
> + }
> +
> + return 0;
> +}
> +
> +/* Parse cc
> + *
> + * SectionCC."FM-Codec" {
> + *
> + * index "1"
> + *
> + * # used for binding to the CC link
> + * ID "0"
> + *
> + * # CC DAI link capabilities and supported configs
> + * cc."playback" {
> + *
> + * capabilities "System playback"
> + *
> + * configs [
> + * "PCM 48k Stereo 16bit"
> + * ]
> + * }
> + *
> + * cc."capture" {
> + *
> + * capabilities "Analog capture"
> + *
> + * configs [
> + * "PCM 48k Stereo 16bit"
> + * ]
> + * }
> + * }
> + */
> +int tplg_parse_cc(snd_tplg_t *tplg,
> + snd_config_t *cfg, void *private ATTRIBUTE_UNUSED)
> +{
> + struct snd_soc_tplg_pcm_dai *pcm_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, PARSER_TYPE_CC);
> + if (!elem)
> + return -ENOMEM;
> +
> + pcm_dai = elem->cc;
> + pcm_dai->size = elem->size;
> +
> + tplg_dbg(" CC: %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;
> +
> + pcm_dai->id = atoi(val);
> + tplg_dbg("\t%s: %d\n", id, pcm_dai->id);
> + continue;
> + }
> +
> + if (strcmp(id, "cc") == 0) {
> + err = tplg_parse_compound(tplg, n,
> + tplg_parse_pcm_cap_cfg, elem);
> + if (err < 0)
> + return err;
> + continue;
> + }
> + }
> +
> + return 0;
> +}
> --
> 2.1.4
>
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