alsa-utils/topology/pre-process-dapm.c
Ranjani Sridharan 68dd54784a topology: pre-processor: Add support for enum controls
Add support for adding enum controls in the topology pre-processor.

Closes: https://github.com/alsa-project/alsa-utils/pull/236
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2023-10-17 13:24:11 +02:00

451 lines
11 KiB
C

/*
Copyright(c) 2021 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.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
The full GNU General Public License is included in this distribution
in the file called LICENSE.GPL.
*/
#include <errno.h>
#include <stdio.h>
#include <alsa/asoundlib.h>
#include "topology.h"
#include "pre-processor.h"
int tplg_build_base_object(struct tplg_pre_processor *tplg_pp, snd_config_t *obj_cfg,
snd_config_t *parent, bool skip_name)
{
snd_config_t *top, *parent_obj, *cfg, *dest;
const char *parent_name;
/* find parent section config */
top = tplg_object_get_section(tplg_pp, parent);
if (!top)
return -EINVAL;
parent_obj = tplg_object_get_instance_config(tplg_pp, parent);
/* get parent name */
parent_name = tplg_object_get_name(tplg_pp, parent_obj);
if (!parent_name)
return 0;
/* find parent config with name */
dest = tplg_find_config(top, parent_name);
if (!dest) {
SNDERR("Cannot find parent config %s\n", parent_name);
return -EINVAL;
}
/* build config from template and add to parent */
return tplg_build_object_from_template(tplg_pp, obj_cfg, &cfg, dest, skip_name);
}
int tplg_build_scale_object(struct tplg_pre_processor *tplg_pp, snd_config_t *obj_cfg,
snd_config_t *parent)
{
return tplg_build_base_object(tplg_pp, obj_cfg, parent, true);
}
int tplg_build_ops_object(struct tplg_pre_processor *tplg_pp, snd_config_t *obj_cfg,
snd_config_t *parent)
{
return tplg_build_base_object(tplg_pp, obj_cfg, parent, false);
}
int tplg_build_channel_object(struct tplg_pre_processor *tplg_pp, snd_config_t *obj_cfg,
snd_config_t *parent)
{
return tplg_build_base_object(tplg_pp, obj_cfg, parent, false);
}
int tplg_build_text_object(struct tplg_pre_processor *tplg_pp, snd_config_t *obj_cfg,
snd_config_t *parent)
{
snd_config_t *cfg;
const char *name;
int ret;
cfg = tplg_object_get_instance_config(tplg_pp, obj_cfg);
name = tplg_object_get_name(tplg_pp, cfg);
if (!name)
return -EINVAL;
ret = tplg_build_object_from_template(tplg_pp, obj_cfg, &cfg, NULL, false);
if (ret < 0)
return ret;
return tplg_parent_update(tplg_pp, parent, "texts", name);
}
int tplg_build_tlv_object(struct tplg_pre_processor *tplg_pp, snd_config_t *obj_cfg,
snd_config_t *parent)
{
snd_config_t *cfg;
const char *name;
int ret;
cfg = tplg_object_get_instance_config(tplg_pp, obj_cfg);
name = tplg_object_get_name(tplg_pp, cfg);
if (!name)
return -EINVAL;
ret = tplg_build_object_from_template(tplg_pp, obj_cfg, &cfg, NULL, false);
if (ret < 0)
return ret;
return tplg_parent_update(tplg_pp, parent, "tlv", name);
}
static int tplg_build_control(struct tplg_pre_processor *tplg_pp, snd_config_t *obj_cfg,
snd_config_t *parent, char *type)
{
snd_config_t *cfg, *obj;
const char *name;
int ret;
obj = tplg_object_get_instance_config(tplg_pp, obj_cfg);
/* get control name */
ret = snd_config_search(obj, "name", &cfg);
if (ret < 0)
return 0;
ret = snd_config_get_string(cfg, &name);
if (ret < 0)
return ret;
ret = tplg_build_object_from_template(tplg_pp, obj_cfg, &cfg, NULL, false);
if (ret < 0)
return ret;
ret = tplg_add_object_data(tplg_pp, obj_cfg, cfg, NULL);
if (ret < 0)
SNDERR("Failed to add data section for %s\n", name);
return tplg_parent_update(tplg_pp, parent, type, name);
}
int tplg_build_mixer_control(struct tplg_pre_processor *tplg_pp, snd_config_t *obj_cfg,
snd_config_t *parent)
{
return tplg_build_control(tplg_pp, obj_cfg, parent, "mixer");
}
int tplg_build_bytes_control(struct tplg_pre_processor *tplg_pp, snd_config_t *obj_cfg,
snd_config_t *parent)
{
return tplg_build_control(tplg_pp, obj_cfg, parent, "bytes");
}
int tplg_build_enum_control(struct tplg_pre_processor *tplg_pp, snd_config_t *obj_cfg,
snd_config_t *parent)
{
return tplg_build_control(tplg_pp, obj_cfg, parent, "enum");
}
/*
* Widget names for pipeline endpoints can be of the following type:
* "class.<constructor args separated by .> ex: pga.0.1, buffer.1.1 etc
* Optionally, the index argument for a widget can be omitted and will be substituted with
* the index from the route: ex: pga..0, host..playback etc
*/
static int tplg_pp_get_widget_name(struct tplg_pre_processor *tplg_pp,
const char *string, long index, char **widget)
{
snd_config_iterator_t i, next;
snd_config_t *temp_cfg, *child, *class_cfg, *n;
char *class_name, *args, *widget_name;
int ret;
/* get class name */
args = strchr(string, '.');
if (!args) {
SNDERR("Error getting class name for %s\n", string);
return -EINVAL;
}
class_name = calloc(1, strlen(string) - strlen(args) + 1);
if (!class_name)
return -ENOMEM;
snprintf(class_name, strlen(string) - strlen(args) + 1, "%s", string);
/* create config with Widget class type */
ret = snd_config_make(&temp_cfg, "Widget", SND_CONFIG_TYPE_COMPOUND);
if (ret < 0) {
free(class_name);
return ret;
}
/* create config with class name and add it to the Widget config */
ret = tplg_config_make_add(&child, class_name, SND_CONFIG_TYPE_COMPOUND, temp_cfg);
if (ret < 0) {
free(class_name);
return ret;
}
/* get class definition for widget */
class_cfg = tplg_class_lookup(tplg_pp, temp_cfg);
snd_config_delete(temp_cfg);
if (!class_cfg) {
free(class_name);
return -EINVAL;
}
/* get constructor for class */
ret = snd_config_search(class_cfg, "attributes.constructor", &temp_cfg);
if (ret < 0) {
SNDERR("No arguments in class for widget %s\n", string);
free(class_name);
return ret;
}
widget_name = strdup(class_name);
free(class_name);
if (!widget_name)
return -ENOMEM;
/* construct widget name using the constructor argument values */
snd_config_for_each(i, next, temp_cfg) {
const char *id;
char *arg, *remaining, *temp;
n = snd_config_iterator_entry(i);
if (snd_config_get_string(n, &id) < 0)
continue;
if (!args) {
SNDERR("insufficient arugments for widget %s\n", string);
ret = -EINVAL;
goto err;
}
remaining = strchr(args + 1, '.');
if (remaining) {
arg = calloc(1, strlen(args + 1) - strlen(remaining) + 1);
if (!arg) {
ret = -ENOMEM;
goto err;
}
snprintf(arg, strlen(args + 1) - strlen(remaining) + 1, "%s", args + 1);
} else {
arg = calloc(1, strlen(args + 1) + 1);
if (!arg) {
ret = -ENOMEM;
goto err;
}
snprintf(arg, strlen(args + 1) + 1, "%s", args + 1);
}
/* if no index provided, substitue with route index */
if (!strcmp(arg, "") && !strcmp(id, "index")) {
free(arg);
arg = tplg_snprintf("%ld", index);
if (!arg) {
ret = -ENOMEM;
free(arg);
goto err;
}
}
temp = tplg_snprintf("%s.%s", widget_name, arg);
if (!temp) {
ret = -ENOMEM;
free(arg);
goto err;
}
free(widget_name);
widget_name = temp;
free(arg);
if (remaining)
args = remaining;
else
args = NULL;
}
*widget = widget_name;
return 0;
err:
free(widget_name);
return ret;
}
int tplg_build_dapm_route_object(struct tplg_pre_processor *tplg_pp, snd_config_t *obj_cfg,
snd_config_t *parent)
{
snd_config_t *top, *obj, *cfg, *route, *child, *parent_obj;
const char *name, *wname;
const char *parent_name = "Endpoint";
char *src_widget_name, *sink_widget_name, *line_str, *route_name;
const char *control = "";
long index = 0;
int ret;
obj = tplg_object_get_instance_config(tplg_pp, obj_cfg);
ret = snd_config_get_id(obj, &name);
if (ret < 0)
return -EINVAL;
/* endpoint connections at the top-level conf have no parent */
if (parent) {
parent_obj = tplg_object_get_instance_config(tplg_pp, parent);
ret = snd_config_get_id(parent_obj, &parent_name);
if (ret < 0)
return -EINVAL;
}
tplg_pp_debug("Building DAPM route object: '%s' ...", name);
ret = snd_config_search(tplg_pp->output_cfg, "SectionGraph", &top);
if (ret < 0) {
ret = tplg_config_make_add(&top, "SectionGraph",
SND_CONFIG_TYPE_COMPOUND, tplg_pp->output_cfg);
if (ret < 0) {
SNDERR("Error creating 'SectionGraph' config\n");
return ret;
}
}
/* get route index */
ret = snd_config_search(obj, "index", &cfg);
if (ret >= 0) {
ret = snd_config_get_integer(cfg, &index);
if (ret < 0) {
SNDERR("Invalid index route %s\n", name);
return ret;
}
}
/* get source widget name */
ret = snd_config_search(obj, "source", &cfg);
if (ret < 0) {
SNDERR("No source for route %s\n", name);
return ret;
}
ret = snd_config_get_string(cfg, &wname);
if (ret < 0) {
SNDERR("Invalid name for source in route %s\n", name);
return ret;
}
ret = tplg_pp_get_widget_name(tplg_pp, wname, index, &src_widget_name);
if (ret < 0) {
SNDERR("error getting widget name for %s\n", wname);
return ret;
}
/* get sink widget name */
ret = snd_config_search(obj, "sink", &cfg);
if (ret < 0) {
SNDERR("No sink for route %s\n", name);
free(src_widget_name);
return ret;
}
ret = snd_config_get_string(cfg, &wname);
if (ret < 0) {
SNDERR("Invalid name for sink in route %s\n", name);
free(src_widget_name);
return ret;
}
ret = tplg_pp_get_widget_name(tplg_pp, wname, index, &sink_widget_name);
if (ret < 0) {
SNDERR("error getting widget name for %s\n", wname);
free(src_widget_name);
return ret;
}
/* get control name */
ret = snd_config_search(obj, "control", &cfg);
if (ret >= 0) {
ret = snd_config_get_string(cfg, &control);
if (ret < 0) {
SNDERR("Invalid control name for route %s\n", name);
goto err;
}
}
/* add route */
route_name = tplg_snprintf("%s.%s", parent_name, name);
if (!route_name) {
ret = -ENOMEM;
goto err;
}
ret = snd_config_make(&route, route_name, SND_CONFIG_TYPE_COMPOUND);
free(route_name);
if (ret < 0) {
SNDERR("Error creating route config for %s %d\n", name, ret);
goto err;
}
ret = snd_config_add(top, route);
if (ret < 0) {
SNDERR("Error adding route config for %s %d\n", name, ret);
goto err;
}
/* add index */
ret = tplg_config_make_add(&child, "index", SND_CONFIG_TYPE_INTEGER, route);
if (ret < 0) {
SNDERR("Error creating index config for %s\n", name);
goto err;
}
ret = snd_config_set_integer(child, index);
if (ret < 0) {
SNDERR("Error setting index config for %s\n", name);
goto err;
}
/* add lines */
ret = tplg_config_make_add(&cfg, "lines", SND_CONFIG_TYPE_COMPOUND, route);
if (ret < 0) {
SNDERR("Error creating lines config for %s\n", name);
goto err;
}
/* add route string */
ret = tplg_config_make_add(&child, "0", SND_CONFIG_TYPE_STRING, cfg);
if (ret < 0) {
SNDERR("Error creating lines config for %s\n", name);
goto err;
}
line_str = tplg_snprintf("%s, %s, %s", sink_widget_name, control, src_widget_name);
if (!line_str) {
ret = -ENOMEM;
goto err;
}
/* set the line string */
ret = snd_config_set_string(child, line_str);
free(line_str);
if (ret < 0)
SNDERR("Error creating lines config for %s\n", name);
err:
free(src_widget_name);
free(sink_widget_name);
return ret;
}