mirror of
https://github.com/alsa-project/alsa-lib.git
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120b3b8ead
Add support to lookup elements by name. This is in preparation for adding some new API calls that will allow building topology data using a C API. This will allow applications to build their own topology data directly. Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Signed-off-by: Mengdong Lin <mengdong.lin@intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
612 lines
13 KiB
C
612 lines
13 KiB
C
/*
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Copyright(c) 2014-2015 Intel Corporation
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All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of version 2 of the GNU General Public License as
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published by the Free Software Foundation.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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Authors: Mengdong Lin <mengdong.lin@intel.com>
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Yao Jin <yao.jin@intel.com>
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Liam Girdwood <liam.r.girdwood@linux.intel.com>
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*/
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#include "list.h"
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#include "tplg_local.h"
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/* copy referenced TLV to the mixer control */
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static int copy_tlv(struct tplg_elem *elem, struct tplg_elem *ref)
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{
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struct snd_soc_tplg_mixer_control *mixer_ctrl = elem->mixer_ctrl;
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struct snd_soc_tplg_ctl_tlv *tlv = ref->tlv;
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tplg_dbg("TLV '%s' used by '%s\n", ref->id, elem->id);
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/* TLV has a fixed size */
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mixer_ctrl->tlv = *tlv;
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/* set size of TLV data */
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mixer_ctrl->hdr.tlv_size = tlv->count * sizeof(uint32_t);
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return 0;
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}
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/* check referenced TLV for a mixer control */
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static int tplg_build_mixer_control(snd_tplg_t *tplg,
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struct tplg_elem *elem)
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{
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struct tplg_ref *ref;
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struct list_head *base, *pos;
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int err = 0;
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base = &elem->ref_list;
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/* for each ref in this control elem */
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list_for_each(pos, base) {
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ref = list_entry(pos, struct tplg_ref, list);
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if (ref->id == NULL || ref->elem)
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continue;
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if (ref->type == OBJECT_TYPE_TLV) {
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ref->elem = tplg_elem_lookup(&tplg->tlv_list,
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ref->id, OBJECT_TYPE_TLV);
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if (ref->elem)
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err = copy_tlv(elem, ref->elem);
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} else if (ref->type == OBJECT_TYPE_DATA) {
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ref->elem = tplg_elem_lookup(&tplg->pdata_list,
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ref->id, OBJECT_TYPE_DATA);
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err = tplg_copy_data(elem, ref->elem);
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}
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if (!ref->elem) {
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SNDERR("error: cannot find '%s' referenced by"
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" control '%s'\n", ref->id, elem->id);
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return -EINVAL;
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} else if (err < 0)
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return err;
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}
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return 0;
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}
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static void copy_enum_texts(struct tplg_elem *enum_elem,
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struct tplg_elem *ref_elem)
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{
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struct snd_soc_tplg_enum_control *ec = enum_elem->enum_ctrl;
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memcpy(ec->texts, ref_elem->texts,
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SND_SOC_TPLG_NUM_TEXTS * SNDRV_CTL_ELEM_ID_NAME_MAXLEN);
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}
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/* check referenced text for a enum control */
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static int tplg_build_enum_control(snd_tplg_t *tplg,
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struct tplg_elem *elem)
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{
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struct tplg_ref *ref;
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struct list_head *base, *pos;
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int err = 0;
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base = &elem->ref_list;
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list_for_each(pos, base) {
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ref = list_entry(pos, struct tplg_ref, list);
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if (ref->id == NULL || ref->elem)
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continue;
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if (ref->type == OBJECT_TYPE_TEXT) {
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ref->elem = tplg_elem_lookup(&tplg->text_list,
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ref->id, OBJECT_TYPE_TEXT);
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if (ref->elem)
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copy_enum_texts(elem, ref->elem);
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} else if (ref->type == OBJECT_TYPE_DATA) {
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ref->elem = tplg_elem_lookup(&tplg->pdata_list,
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ref->id, OBJECT_TYPE_DATA);
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err = tplg_copy_data(elem, ref->elem);
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}
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if (!ref->elem) {
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SNDERR("error: cannot find '%s' referenced by"
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" control '%s'\n", ref->id, elem->id);
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return -EINVAL;
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} else if (err < 0)
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return err;
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}
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return 0;
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}
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/* check referenced private data for a byte control */
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static int tplg_build_bytes_control(snd_tplg_t *tplg, struct tplg_elem *elem)
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{
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struct tplg_ref *ref;
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struct list_head *base, *pos;
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base = &elem->ref_list;
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list_for_each(pos, base) {
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ref = list_entry(pos, struct tplg_ref, list);
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if (ref->id == NULL || ref->elem)
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continue;
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/* bytes control only reference one private data section */
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ref->elem = tplg_elem_lookup(&tplg->pdata_list,
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ref->id, OBJECT_TYPE_DATA);
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if (!ref->elem) {
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SNDERR("error: cannot find data '%s'"
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" referenced by control '%s'\n",
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ref->id, elem->id);
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return -EINVAL;
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}
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/* copy texts to enum elem */
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return tplg_copy_data(elem, ref->elem);
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}
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return 0;
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}
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int tplg_build_controls(snd_tplg_t *tplg)
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{
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struct list_head *base, *pos;
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struct tplg_elem *elem;
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int err = 0;
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base = &tplg->mixer_list;
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list_for_each(pos, base) {
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elem = list_entry(pos, struct tplg_elem, list);
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err = tplg_build_mixer_control(tplg, elem);
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if (err < 0)
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return err;
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/* add control to manifest */
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tplg->manifest.control_elems++;
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}
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base = &tplg->enum_list;
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list_for_each(pos, base) {
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elem = list_entry(pos, struct tplg_elem, list);
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err = tplg_build_enum_control(tplg, elem);
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if (err < 0)
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return err;
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/* add control to manifest */
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tplg->manifest.control_elems++;
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}
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base = &tplg->bytes_ext_list;
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list_for_each(pos, base) {
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elem = list_entry(pos, struct tplg_elem, list);
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err = tplg_build_bytes_control(tplg, elem);
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if (err < 0)
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return err;
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/* add control to manifest */
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tplg->manifest.control_elems++;
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}
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return 0;
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}
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/*
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* Parse TLV of DBScale type.
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*
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* Parse DBScale describing min, step, mute in DB.
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*/
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static int tplg_parse_tlv_dbscale(snd_config_t *cfg, struct tplg_elem *elem)
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{
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snd_config_iterator_t i, next;
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snd_config_t *n;
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struct snd_soc_tplg_ctl_tlv *tplg_tlv;
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const char *id = NULL, *value = NULL;
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int *data;
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tplg_dbg(" scale: %s\n", elem->id);
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tplg_tlv = calloc(1, sizeof(*tplg_tlv));
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if (!tplg_tlv)
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return -ENOMEM;
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data = (int*)(tplg_tlv->data);
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elem->tlv = tplg_tlv;
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tplg_tlv->numid = SNDRV_CTL_TLVT_DB_SCALE;
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tplg_tlv->count = 8;
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tplg_tlv->size = sizeof(*tplg_tlv);
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snd_config_for_each(i, next, cfg) {
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n = snd_config_iterator_entry(i);
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/* get ID */
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if (snd_config_get_id(n, &id) < 0) {
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SNDERR("error: cant get ID\n");
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return -EINVAL;
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}
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/* get value */
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if (snd_config_get_string(n, &value) < 0)
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continue;
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tplg_dbg("\t%s = %s\n", id, value);
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/* get TLV data */
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if (strcmp(id, "min") == 0)
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data[0] = atoi(value);
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else if (strcmp(id, "step") == 0)
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data[1] = atoi(value);
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else if (strcmp(id, "mute") == 0)
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data[2] = atoi(value);
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else
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SNDERR("error: unknown key %s\n", id);
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}
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return 0;
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}
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/* Parse TLV */
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int tplg_parse_tlv(snd_tplg_t *tplg, snd_config_t *cfg,
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void *private ATTRIBUTE_UNUSED)
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{
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snd_config_iterator_t i, next;
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snd_config_t *n;
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const char *id;
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int err = 0;
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struct tplg_elem *elem;
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elem = tplg_elem_new_common(tplg, cfg, NULL, OBJECT_TYPE_TLV);
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if (!elem)
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return -ENOMEM;
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snd_config_for_each(i, next, cfg) {
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n = snd_config_iterator_entry(i);
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if (snd_config_get_id(n, &id) < 0)
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continue;
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if (strcmp(id, "scale") == 0) {
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err = tplg_parse_tlv_dbscale(n, elem);
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if (err < 0) {
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SNDERR("error: failed to DBScale");
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return err;
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}
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continue;
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}
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}
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return err;
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}
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/* Parse Control Bytes */
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int tplg_parse_control_bytes(snd_tplg_t *tplg,
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snd_config_t *cfg, void *private ATTRIBUTE_UNUSED)
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{
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struct snd_soc_tplg_bytes_control *be;
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struct tplg_elem *elem;
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snd_config_iterator_t i, next;
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snd_config_t *n;
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const char *id, *val = NULL;
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int err;
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elem = tplg_elem_new_common(tplg, cfg, NULL, OBJECT_TYPE_BYTES);
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if (!elem)
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return -ENOMEM;
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be = elem->bytes_ext;
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be->size = elem->size;
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elem_copy_text(be->hdr.name, elem->id, SNDRV_CTL_ELEM_ID_NAME_MAXLEN);
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be->hdr.type = SND_SOC_TPLG_TYPE_BYTES;
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tplg_dbg(" Control Bytes: %s\n", elem->id);
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snd_config_for_each(i, next, cfg) {
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n = snd_config_iterator_entry(i);
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if (snd_config_get_id(n, &id) < 0)
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continue;
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/* skip comments */
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if (strcmp(id, "comment") == 0)
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continue;
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if (id[0] == '#')
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continue;
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if (strcmp(id, "index") == 0) {
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if (snd_config_get_string(n, &val) < 0)
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return -EINVAL;
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elem->index = atoi(val);
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tplg_dbg("\t%s: %d\n", id, elem->index);
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continue;
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}
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if (strcmp(id, "base") == 0) {
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if (snd_config_get_string(n, &val) < 0)
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return -EINVAL;
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be->base = atoi(val);
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tplg_dbg("\t%s: %d\n", id, be->base);
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continue;
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}
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if (strcmp(id, "num_regs") == 0) {
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if (snd_config_get_string(n, &val) < 0)
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return -EINVAL;
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be->num_regs = atoi(val);
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tplg_dbg("\t%s: %d\n", id, be->num_regs);
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continue;
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}
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if (strcmp(id, "max") == 0) {
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if (snd_config_get_string(n, &val) < 0)
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return -EINVAL;
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be->max = atoi(val);
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tplg_dbg("\t%s: %d\n", id, be->num_regs);
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continue;
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}
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if (strcmp(id, "mask") == 0) {
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if (snd_config_get_string(n, &val) < 0)
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return -EINVAL;
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be->mask = strtol(val, NULL, 16);
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tplg_dbg("\t%s: %d\n", id, be->mask);
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continue;
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}
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if (strcmp(id, "data") == 0) {
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if (snd_config_get_string(n, &val) < 0)
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return -EINVAL;
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tplg_ref_add(elem, OBJECT_TYPE_DATA, val);
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tplg_dbg("\t%s: %s\n", id, val);
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continue;
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}
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if (strcmp(id, "tlv") == 0) {
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if (snd_config_get_string(n, &val) < 0)
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return -EINVAL;
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err = tplg_ref_add(elem, OBJECT_TYPE_TLV, val);
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if (err < 0)
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return err;
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be->hdr.access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |
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SNDRV_CTL_ELEM_ACCESS_READWRITE;
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tplg_dbg("\t%s: %s\n", id, val);
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continue;
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}
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}
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return 0;
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}
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/* Parse Control Enums. */
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int tplg_parse_control_enum(snd_tplg_t *tplg, snd_config_t *cfg,
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void *private ATTRIBUTE_UNUSED)
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{
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struct snd_soc_tplg_enum_control *ec;
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struct tplg_elem *elem;
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snd_config_iterator_t i, next;
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snd_config_t *n;
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const char *id, *val = NULL;
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int err, j;
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elem = tplg_elem_new_common(tplg, cfg, NULL, OBJECT_TYPE_ENUM);
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if (!elem)
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return -ENOMEM;
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ec = elem->enum_ctrl;
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elem_copy_text(ec->hdr.name, elem->id, SNDRV_CTL_ELEM_ID_NAME_MAXLEN);
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ec->hdr.type = SND_SOC_TPLG_TYPE_ENUM;
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ec->size = elem->size;
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tplg->channel_idx = 0;
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/* set channel reg to default state */
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for (j = 0; j < SND_SOC_TPLG_MAX_CHAN; j++)
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ec->channel[j].reg = -1;
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tplg_dbg(" Control Enum: %s\n", elem->id);
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snd_config_for_each(i, next, cfg) {
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n = snd_config_iterator_entry(i);
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if (snd_config_get_id(n, &id) < 0)
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continue;
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/* skip comments */
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if (strcmp(id, "comment") == 0)
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continue;
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if (id[0] == '#')
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continue;
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if (strcmp(id, "index") == 0) {
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if (snd_config_get_string(n, &val) < 0)
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return -EINVAL;
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elem->index = atoi(val);
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tplg_dbg("\t%s: %d\n", id, elem->index);
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continue;
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}
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if (strcmp(id, "texts") == 0) {
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if (snd_config_get_string(n, &val) < 0)
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return -EINVAL;
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tplg_ref_add(elem, OBJECT_TYPE_TEXT, val);
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tplg_dbg("\t%s: %s\n", id, val);
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continue;
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}
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if (strcmp(id, "channel") == 0) {
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if (ec->num_channels >= SND_SOC_TPLG_MAX_CHAN) {
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SNDERR("error: too many channels %s\n",
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elem->id);
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return -EINVAL;
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}
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err = tplg_parse_compound(tplg, n, tplg_parse_channel,
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ec->channel);
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if (err < 0)
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return err;
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ec->num_channels = tplg->channel_idx;
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continue;
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}
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if (strcmp(id, "ops") == 0) {
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err = tplg_parse_compound(tplg, n, tplg_parse_ops,
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&ec->hdr);
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if (err < 0)
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return err;
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continue;
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}
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if (strcmp(id, "data") == 0) {
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if (snd_config_get_string(n, &val) < 0)
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return -EINVAL;
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tplg_ref_add(elem, OBJECT_TYPE_DATA, val);
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tplg_dbg("\t%s: %s\n", id, val);
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continue;
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}
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}
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return 0;
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}
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/* Parse Controls.
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*
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* Mixer control. Supports multiple channels.
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*/
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int tplg_parse_control_mixer(snd_tplg_t *tplg,
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snd_config_t *cfg, void *private ATTRIBUTE_UNUSED)
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{
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struct snd_soc_tplg_mixer_control *mc;
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struct tplg_elem *elem;
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snd_config_iterator_t i, next;
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snd_config_t *n;
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const char *id, *val = NULL;
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int err, j;
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elem = tplg_elem_new_common(tplg, cfg, NULL, OBJECT_TYPE_MIXER);
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if (!elem)
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return -ENOMEM;
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/* init new mixer */
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mc = elem->mixer_ctrl;
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elem_copy_text(mc->hdr.name, elem->id, SNDRV_CTL_ELEM_ID_NAME_MAXLEN);
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mc->hdr.type = SND_SOC_TPLG_TYPE_MIXER;
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mc->size = elem->size;
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tplg->channel_idx = 0;
|
|
|
|
/* set channel reg to default state */
|
|
for (j = 0; j < SND_SOC_TPLG_MAX_CHAN; j++)
|
|
mc->channel[j].reg = -1;
|
|
|
|
tplg_dbg(" Control Mixer: %s\n", elem->id);
|
|
|
|
/* giterate trough each mixer elment */
|
|
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, "channel") == 0) {
|
|
if (mc->num_channels >= SND_SOC_TPLG_MAX_CHAN) {
|
|
SNDERR("error: too many channels %s\n",
|
|
elem->id);
|
|
return -EINVAL;
|
|
}
|
|
|
|
err = tplg_parse_compound(tplg, n, tplg_parse_channel,
|
|
mc->channel);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
mc->num_channels = tplg->channel_idx;
|
|
continue;
|
|
}
|
|
|
|
if (strcmp(id, "max") == 0) {
|
|
if (snd_config_get_string(n, &val) < 0)
|
|
return -EINVAL;
|
|
|
|
mc->max = atoi(val);
|
|
tplg_dbg("\t%s: %d\n", id, mc->max);
|
|
continue;
|
|
}
|
|
|
|
if (strcmp(id, "invert") == 0) {
|
|
if (snd_config_get_string(n, &val) < 0)
|
|
return -EINVAL;
|
|
|
|
if (strcmp(val, "true") == 0)
|
|
mc->invert = 1;
|
|
else if (strcmp(val, "false") == 0)
|
|
mc->invert = 0;
|
|
|
|
tplg_dbg("\t%s: %d\n", id, mc->invert);
|
|
continue;
|
|
}
|
|
|
|
if (strcmp(id, "ops") == 0) {
|
|
err = tplg_parse_compound(tplg, n, tplg_parse_ops,
|
|
&mc->hdr);
|
|
if (err < 0)
|
|
return err;
|
|
continue;
|
|
}
|
|
|
|
if (strcmp(id, "tlv") == 0) {
|
|
if (snd_config_get_string(n, &val) < 0)
|
|
return -EINVAL;
|
|
|
|
err = tplg_ref_add(elem, OBJECT_TYPE_TLV, val);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
mc->hdr.access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |
|
|
SNDRV_CTL_ELEM_ACCESS_READWRITE;
|
|
tplg_dbg("\t%s: %s\n", id, val);
|
|
continue;
|
|
}
|
|
|
|
if (strcmp(id, "data") == 0) {
|
|
if (snd_config_get_string(n, &val) < 0)
|
|
return -EINVAL;
|
|
|
|
tplg_ref_add(elem, OBJECT_TYPE_DATA, val);
|
|
tplg_dbg("\t%s: %s\n", id, val);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|