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alsa-utils/topology/pre-process-object.c
Jyri Sarha cf25cf6767 topology: pre-process-object: Expand definitions within strings 
Expand the pre-processor to allow for expanding the definitions,
object attribute references and arithmetic expressions within strings.

With this extension its possible to embedded definitions or attribute
references into topology string objects. For example:

Define {
       PCM_NUMBER	1
}

Object.Pipeline {
	pcm-playback.0 {

	Object.Widget {
		copier.1 {
			copier_type	"host"
		}
		gain.1 {
			Object.Control.mixer.1 {
				name 'hw:$[$PCM_NUMBER - 1] Playback Volume'
		}
	}

	Object.Base {
		route.1 {
			source	copier.host.$index.1
			sink	gain.$index.1
		}
	}
}

In the example the $[$PCM_NUMBER - 1] would be replaced with the
result of arithmetic expression '1 - 1' in other words '0' , and
$index in all occurrences with index attribute found from pipeline
object. Any non alpha numeric or '_' character are treated as
delimiters for variable names if $[]-notation is not used.

Fixes: https://github.com/alsa-project/alsa-utils/pull/189
Signed-off-by: Jyri Sarha <jyri.sarha@intel.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2023-02-06 15:49:14 +01:00

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/*
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 <assert.h>
#include <errno.h>
#include <stddef.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <alsa/asoundlib.h>
#include "gettext.h"
#include "topology.h"
#include "pre-processor.h"
/* Parse VendorToken object, create the "SectionVendorToken" and save it */
int tplg_build_vendor_token_object(struct tplg_pre_processor *tplg_pp,
snd_config_t *obj_cfg, snd_config_t *parent)
{
snd_config_iterator_t i, next;
snd_config_t *vtop, *n, *obj;
const char *name;
int ret;
ret = tplg_build_object_from_template(tplg_pp, obj_cfg, &vtop, NULL, false);
if (ret < 0)
return ret;
ret = snd_config_get_id(vtop, &name);
if (ret < 0)
return ret;
/* add the tuples */
obj = tplg_object_get_instance_config(tplg_pp, obj_cfg);
snd_config_for_each(i, next, obj) {
snd_config_t *dst;
const char *id;
n = snd_config_iterator_entry(i);
if (snd_config_get_id(n, &id) < 0)
continue;
if (!strcmp(id, "name"))
continue;
ret = snd_config_copy(&dst, n);
if (ret < 0) {
SNDERR("Error copying config node %s for '%s'\n", id, name);
return ret;
}
ret = snd_config_add(vtop, dst);
if (ret < 0) {
snd_config_delete(dst);
SNDERR("Error adding vendortoken %s for %s\n", id, name);
return ret;
}
}
return ret;
}
int tplg_parent_update(struct tplg_pre_processor *tplg_pp, snd_config_t *parent,
const char *section_name, const char *item_name)
{
snd_config_iterator_t i, next;
snd_config_t *child, *cfg, *top, *item_config, *n;
const char *parent_name;
char *item_id;
int ret, id = 0;
/* Nothing to do if parent is NULL */
if (!parent)
return 0;
child = tplg_object_get_instance_config(tplg_pp, parent);
ret = snd_config_search(child, "name", &cfg);
if (ret < 0) {
ret = snd_config_get_id(child, &parent_name);
if (ret < 0) {
SNDERR("No name config for parent\n");
return ret;
}
} else {
ret = snd_config_get_string(cfg, &parent_name);
if (ret < 0) {
SNDERR("Invalid name for parent\n");
return ret;
}
}
top = tplg_object_get_section(tplg_pp, parent);
if (!top)
return -EINVAL;
/* get config with name */
cfg = tplg_find_config(top, parent_name);
if (!cfg)
return ret;
/* get section config */
if (!strcmp(section_name, "tlv")) {
/* set tlv name if config exists already */
ret = snd_config_search(cfg, section_name, &item_config);
if (ret < 0) {
ret = tplg_config_make_add(&item_config, section_name,
SND_CONFIG_TYPE_STRING, cfg);
if (ret < 0) {
SNDERR("Error creating section config widget %s for %s\n",
section_name, parent_name);
return ret;
}
}
return snd_config_set_string(item_config, item_name);
}
ret = snd_config_search(cfg, section_name, &item_config);
if (ret < 0) {
ret = tplg_config_make_add(&item_config, section_name,
SND_CONFIG_TYPE_COMPOUND, cfg);
if (ret < 0) {
SNDERR("Error creating section config widget %s for %s\n",
section_name, parent_name);
return ret;
}
}
snd_config_for_each(i, next, item_config) {
const char *name;
n = snd_config_iterator_entry(i);
if (snd_config_get_string(n, &name) < 0)
continue;
/* item already exists */
if (!strcmp(name, item_name))
return 0;
id++;
}
/* add new item */
item_id = tplg_snprintf("%d", id);
if (!item_id)
return -ENOMEM;
ret = snd_config_make(&cfg, item_id, SND_CONFIG_TYPE_STRING);
free(item_id);
if (ret < 0)
return ret;
ret = snd_config_set_string(cfg, item_name);
if (ret < 0)
return ret;
ret = snd_config_add(item_config, cfg);
if (ret < 0)
snd_config_delete(cfg);
return ret;
}
/* Parse data object, create the "SectionData" and save it. Only "bytes" data supported for now */
int tplg_build_data_object(struct tplg_pre_processor *tplg_pp, snd_config_t *obj_cfg,
snd_config_t *parent)
{
snd_config_t *dtop;
const char *name;
int ret;
ret = tplg_build_object_from_template(tplg_pp, obj_cfg, &dtop, NULL, false);
if (ret < 0)
return ret;
ret = snd_config_get_id(dtop, &name);
if (ret < 0)
return ret;
return tplg_parent_update(tplg_pp, parent, "data", name);
}
static int tplg_create_config_template(struct tplg_pre_processor *tplg_pp,
snd_config_t **template,
const struct config_template_items *items)
{
snd_config_t *top, *child;
int ret, i;
ret = snd_config_make(&top, "template", SND_CONFIG_TYPE_COMPOUND);
if (ret < 0)
return ret;
/* add integer configs */
for (i = 0; i < MAX_CONFIGS_IN_TEMPLATE; i++)
if (items->int_config_ids[i]) {
ret = tplg_config_make_add(&child, items->int_config_ids[i],
SND_CONFIG_TYPE_INTEGER, top);
if (ret < 0)
goto err;
}
/* add string configs */
for (i = 0; i < MAX_CONFIGS_IN_TEMPLATE; i++)
if (items->string_config_ids[i]) {
ret = tplg_config_make_add(&child, items->string_config_ids[i],
SND_CONFIG_TYPE_STRING, top);
if (ret < 0)
goto err;
}
/* add compound configs */
for (i = 0; i < MAX_CONFIGS_IN_TEMPLATE; i++) {
if (items->compound_config_ids[i]) {
ret = tplg_config_make_add(&child, items->compound_config_ids[i],
SND_CONFIG_TYPE_COMPOUND, top);
if (ret < 0)
goto err;
}
}
err:
if (ret < 0) {
snd_config_delete(top);
return ret;
}
*template = top;
return ret;
}
static void tplg_attribute_print_valid_values(snd_config_t *valid_values, const char *name)
{
snd_config_iterator_t i, next;
snd_config_t *n;
SNDERR("valid values for attribute %s are:\n", name);
snd_config_for_each(i, next, valid_values) {
const char *s, *id;
n = snd_config_iterator_entry(i);
if (snd_config_get_id(n, &id) < 0)
continue;
if (snd_config_get_string(n, &s) < 0)
continue;
SNDERR("%s", s);
}
}
/* check is attribute value belongs in the set of valid values */
static bool tplg_is_attribute_valid_value(snd_config_t *valid_values, const char *value)
{
snd_config_iterator_t i, next;
snd_config_t *n;
snd_config_for_each(i, next, valid_values) {
const char *s, *id;
n = snd_config_iterator_entry(i);
if (snd_config_get_id(n, &id) < 0)
continue;
if (snd_config_get_string(n, &s) < 0)
continue;
if (!strcmp(value, s))
return true;
}
return false;
}
#if SND_LIB_VER(1, 2, 5) < SND_LIB_VERSION
static int pre_process_find_variable(snd_config_t **dst, const char *str, snd_config_t *config);
/* check is attribute value belongs in the set of valid values after expanding the valid values */
static bool tplg_is_attribute_valid_expanded_value(struct tplg_pre_processor *tplg_pp,
snd_config_t *valid_values, int value)
{
snd_config_iterator_t i, next;
snd_config_t *n, *var, *conf_defines;
int ret;
ret = snd_config_search(tplg_pp->input_cfg, "Define", &conf_defines);
if (ret < 0)
return false;
snd_config_for_each(i, next, valid_values) {
const char *s, *id;
long v;
n = snd_config_iterator_entry(i);
if (snd_config_get_id(n, &id) < 0)
continue;
if (snd_config_get_string(n, &s) < 0)
continue;
if (s[0] != '$')
continue;
/* find the variable definition */
ret = pre_process_find_variable(&var, s + 1, conf_defines);
if (ret < 0) {
SNDERR("No definition for variable %s\n", s + 1);
return false;
}
if (snd_config_get_integer(var, &v) < 0) {
SNDERR("Invalid definition for %s\n", s);
snd_config_delete(var);
return false;
}
snd_config_delete(var);
if (value == v)
return true;
}
return false;
}
#endif
/* check if attribute value passes the min/max value constraints */
static bool tplg_object_is_attribute_min_max_valid(snd_config_t *attr, snd_config_t *obj_attr,
bool min_check)
{
snd_config_type_t type = snd_config_get_type(obj_attr);
snd_config_t *valid;
const char *attr_name;
int ret;
if (snd_config_get_id(attr, &attr_name) < 0)
return false;
if (min_check) {
ret = snd_config_search(attr, "constraints.min", &valid);
if (ret < 0)
return true;
} else {
ret = snd_config_search(attr, "constraints.max", &valid);
if (ret < 0)
return true;
}
switch(type) {
case SND_CONFIG_TYPE_INTEGER:
{
long v, m;
if (snd_config_get_integer(valid, &m) < 0)
return true;
if (snd_config_get_integer(obj_attr, &v) < 0)
return false;
if (min_check) {
if (v < m) {
SNDERR("attribute '%s' value: %ld is less than min value: %d\n",
attr_name, v, m);
return false;
}
} else {
if (v > m) {
SNDERR("attribute '%s' value: %ld is greater than max value: %d\n",
attr_name, v, m);
return false;
}
}
return true;
}
case SND_CONFIG_TYPE_INTEGER64:
{
long long v;
long m;
if (snd_config_get_integer(valid, &m) < 0)
return true;
if (snd_config_get_integer64(obj_attr, &v) < 0)
return false;
if (min_check) {
if (v < m) {
SNDERR("attribute '%s' value: %ld is less than min value: %d\n",
attr_name, v, m);
return false;
}
} else {
if (v > m) {
SNDERR("attribute '%s' value: %ld is greater than max value: %d\n",
attr_name, v, m);
return false;
}
}
return true;
}
default:
break;
}
return false;
}
/* check for min/max and valid value constraints */
static bool tplg_object_is_attribute_valid(struct tplg_pre_processor *tplg_pp,
snd_config_t *attr, snd_config_t *obj_attr)
{
snd_config_iterator_t i, next;
snd_config_t *valid, *n;
snd_config_type_t type;
const char *attr_name, *obj_value;
int ret;
if (snd_config_get_id(attr, &attr_name) < 0)
return false;
type = snd_config_get_type(obj_attr);
/* check if attribute has valid values */
ret = snd_config_search(attr, "constraints.valid_values", &valid);
if (ret < 0)
goto min_max_check;
switch(type) {
case SND_CONFIG_TYPE_STRING:
if (snd_config_get_string(obj_attr, &obj_value) < 0)
return false;
if (!tplg_is_attribute_valid_value(valid, obj_value)) {
tplg_attribute_print_valid_values(valid, attr_name);
return false;
}
return true;
case SND_CONFIG_TYPE_COMPOUND:
snd_config_for_each(i, next, obj_attr) {
const char *s, *id;
n = snd_config_iterator_entry(i);
if (snd_config_get_id(n, &id) < 0)
continue;
if (snd_config_get_string(n, &s) < 0)
continue;
if (!tplg_is_attribute_valid_value(valid, s)) {
tplg_attribute_print_valid_values(valid, attr_name);
return false;
}
}
return true;
#if SND_LIB_VER(1, 2, 5) < SND_LIB_VERSION
case SND_CONFIG_TYPE_INTEGER:
{
long v;
if (snd_config_get_integer(obj_attr, &v) < 0)
return false;
if (!tplg_is_attribute_valid_expanded_value(tplg_pp, valid, v)) {
tplg_attribute_print_valid_values(valid, attr_name);
return false;
}
return true;
}
#endif
default:
break;
}
return false;
min_max_check:
if (!tplg_object_is_attribute_min_max_valid(attr, obj_attr, true))
return false;
return tplg_object_is_attribute_min_max_valid(attr, obj_attr, false);
}
/* get object's name attribute value */
const char *tplg_object_get_name(struct tplg_pre_processor *tplg_pp,
snd_config_t *object)
{
snd_config_t *cfg;
const char *name;
int ret;
ret = snd_config_search(object, "name", &cfg);
if (ret < 0)
return NULL;
ret = snd_config_get_string(cfg, &name);
if (ret < 0)
return NULL;
return name;
}
/* look up the instance of object in a config */
static snd_config_t *tplg_object_lookup_in_config(struct tplg_pre_processor *tplg_pp,
snd_config_t *class, const char *type,
const char *class_name, const char *id)
{
snd_config_t *obj_cfg = NULL;
char *config_id;
config_id = tplg_snprintf("Object.%s.%s.%s", type, class_name, id);
if (!config_id)
return NULL;
if (snd_config_search(class, config_id, &obj_cfg) < 0)
return NULL;
free(config_id);
return obj_cfg;
}
static int tplg_pp_add_object_tuple_section(struct tplg_pre_processor *tplg_pp,
snd_config_t *class_cfg,
snd_config_t *attr, char *data_name,
const char *token_ref, const char *array_name)
{
snd_config_t *top, *tuple_cfg, *child, *cfg, *new;
const char *id;
char *token, *type, *str;
long tuple_value;
int ret;
tplg_pp_debug("Building vendor tuples section: '%s' ...", data_name);
ret = snd_config_search(tplg_pp->output_cfg, "SectionVendorTuples", &top);
if (ret < 0) {
ret = tplg_config_make_add(&top, "SectionVendorTuples",
SND_CONFIG_TYPE_COMPOUND, tplg_pp->output_cfg);
if (ret < 0) {
SNDERR("Error creating SectionVendorTuples config\n");
return ret;
}
}
type = strchr(token_ref, '.');
if(!type) {
SNDERR("Error getting type for %s\n", token_ref);
return -EINVAL;
}
token = calloc(1, strlen(token_ref) - strlen(type) + 1);
if (!token)
return -ENOMEM;
snprintf(token, strlen(token_ref) - strlen(type) + 1, "%s", token_ref);
if (!array_name)
str = strdup(type + 1);
else
str = tplg_snprintf("%s.%s", type + 1, array_name);
if (!str) {
ret = -ENOMEM;
goto free;
}
tuple_cfg = tplg_find_config(top, data_name);
if (!tuple_cfg) {
/* add new SectionVendorTuples */
ret = tplg_config_make_add(&tuple_cfg, data_name, SND_CONFIG_TYPE_COMPOUND, top);
if (ret < 0) {
SNDERR("Error creating new vendor tuples config %s\n", data_name);
goto err;
}
ret = tplg_config_make_add(&child, "tokens", SND_CONFIG_TYPE_STRING,
tuple_cfg);
if (ret < 0) {
SNDERR("Error creating tokens config for '%s'\n", data_name);
goto err;
}
ret = snd_config_set_string(child, token);
if (ret < 0) {
SNDERR("Error setting tokens config for '%s'\n", data_name);
goto err;
}
ret = tplg_config_make_add(&child, "tuples", SND_CONFIG_TYPE_COMPOUND,
tuple_cfg);
if (ret < 0) {
SNDERR("Error creating tuples config for '%s'\n", data_name);
goto err;
}
ret = tplg_config_make_add(&cfg, str, SND_CONFIG_TYPE_COMPOUND,
child);
if (ret < 0) {
SNDERR("Error creating tuples type config for '%s'\n", data_name);
goto err;
}
} else {
snd_config_t *tuples_cfg;
ret = snd_config_search(tuple_cfg, "tuples" , &tuples_cfg);
if (ret < 0) {
SNDERR("can't find tuples config in %s\n", data_name);
goto err;
}
cfg = tplg_find_config(tuples_cfg, str);
if (!cfg) {
ret = tplg_config_make_add(&cfg, str, SND_CONFIG_TYPE_COMPOUND,
tuples_cfg);
if (ret < 0) {
SNDERR("Error creating tuples config for '%s' and type name %s\n", data_name, str);
goto err;
}
}
}
ret = snd_config_get_id(attr, &id);
if (ret < 0)
goto err;
/* tuple exists already? */
ret = snd_config_search(cfg, id, &child);
if (ret >=0)
goto err;
/* add attribute to tuples */
tuple_value = tplg_class_attribute_valid_tuple_value(tplg_pp, class_cfg, attr);
if (tuple_value < 0) {
/* just copy attribute cfg as is */
ret = snd_config_copy(&new, attr);
if (ret < 0) {
SNDERR("can't copy attribute for %s\n", data_name);
goto err;
}
} else {
ret = snd_config_make(&new, id, SND_CONFIG_TYPE_INTEGER);
if (ret < 0)
goto err;
ret = snd_config_set_integer(new, tuple_value);
if (ret < 0)
goto err;
}
ret = snd_config_add(cfg, new);
err:
free(str);
free:
free(token);
return ret;
}
static int tplg_pp_add_object_data_section(struct tplg_pre_processor *tplg_pp,
snd_config_t *obj_data, char *data_name)
{
snd_config_iterator_t i, next;
snd_config_t *top, *data_cfg, *child;
char *data_id;
int ret, id = 0;
ret = snd_config_search(tplg_pp->output_cfg, "SectionData", &top);
if (ret < 0) {
ret = tplg_config_make_add(&top, "SectionData", SND_CONFIG_TYPE_COMPOUND,
tplg_pp->output_cfg);
if (ret < 0) {
SNDERR("Failed to add SectionData\n");
return ret;
}
}
/* nothing to do if data section already exists */
data_cfg = tplg_find_config(top, data_name);
if (data_cfg)
return 0;
tplg_pp_debug("Building data section %s ...", data_name);
/* add new SectionData */
ret = tplg_config_make_add(&data_cfg, data_name, SND_CONFIG_TYPE_COMPOUND, top);
if (ret < 0)
return ret;
ret = tplg_config_make_add(&child, "tuples", SND_CONFIG_TYPE_STRING, data_cfg);
if (ret < 0) {
SNDERR("error adding data ref for %s\n", data_name);
return ret;
}
ret = snd_config_set_string(child, data_name);
if (ret < 0) {
SNDERR("error setting tuples ref for %s\n", data_name);
return ret;
}
/* add data item to object */
snd_config_for_each(i, next, obj_data)
id++;
data_id = tplg_snprintf("%d", id);
if (!data_id)
return -ENOMEM;
ret = tplg_config_make_add(&child, data_id, SND_CONFIG_TYPE_STRING, obj_data);
free(data_id);
if (ret < 0) {
SNDERR("error adding data ref %s\n", data_name);
return ret;
}
return snd_config_set_string(child, data_name);
}
int tplg_add_object_data(struct tplg_pre_processor *tplg_pp, snd_config_t *obj_cfg,
snd_config_t *top, const char *array_name)
{
snd_config_iterator_t i, next;
snd_config_t *data_cfg, *class_cfg, *n, *obj;
const char *object_id;
int ret;
if (snd_config_get_id(top, &object_id) < 0)
return 0;
obj = tplg_object_get_instance_config(tplg_pp, obj_cfg);
class_cfg = tplg_class_lookup(tplg_pp, obj_cfg);
if (!class_cfg)
return -EINVAL;
/* add data config to top */
ret = snd_config_search(top, "data", &data_cfg);
if (ret < 0) {
ret = tplg_config_make_add(&data_cfg, "data", SND_CONFIG_TYPE_COMPOUND, top);
if (ret < 0) {
SNDERR("error creating data config for %s\n", object_id);
return ret;
}
}
/* add data items to object's data section */
snd_config_for_each(i, next, obj) {
const char *id, *token;
char *data_cfg_name;
n = snd_config_iterator_entry(i);
if (snd_config_get_id(n, &id) < 0)
continue;
token = tplg_class_get_attribute_token_ref(tplg_pp, class_cfg, id);
if (!token)
continue;
data_cfg_name = tplg_snprintf("%s.%s", object_id, token);
if (!data_cfg_name)
return -ENOMEM;
ret = tplg_pp_add_object_data_section(tplg_pp, data_cfg, data_cfg_name);
if (ret < 0) {
SNDERR("Failed to add data section %s\n", data_cfg_name);
free(data_cfg_name);
return ret;
}
ret = tplg_pp_add_object_tuple_section(tplg_pp, class_cfg, n, data_cfg_name,
token, array_name);
if (ret < 0) {
SNDERR("Failed to add data section %s\n", data_cfg_name);
free(data_cfg_name);
return ret;
}
free(data_cfg_name);
}
return 0;
}
/* search for all template configs in the source config and copy them to the destination */
static int tplg_object_add_attributes(snd_config_t *dst, snd_config_t *template,
snd_config_t *src)
{
snd_config_iterator_t i, next;
snd_config_t *n;
int ret;
snd_config_for_each(i, next, template) {
snd_config_t *attr, *new;
const char *id;
n = snd_config_iterator_entry(i);
if (snd_config_get_id(n, &id) < 0)
continue;
ret = snd_config_search(src, id, &attr);
if (ret < 0)
continue;
/* skip if attribute is already set */
ret = snd_config_search(dst, id, &new);
if (ret >= 0)
continue;
ret = snd_config_copy(&new, attr);
if (ret < 0) {
SNDERR("failed to copy attribute %s\n", id);
return ret;
}
ret = snd_config_add(dst, new);
if (ret < 0) {
snd_config_delete(new);
SNDERR("failed to add attribute %s\n", id);
return ret;
}
}
return 0;
}
static const struct build_function_map *tplg_object_get_map(struct tplg_pre_processor *tplg_pp,
snd_config_t *obj);
/* Add object attributes to the private data of the parent object config */
static int tplg_build_parent_data(struct tplg_pre_processor *tplg_pp, snd_config_t *obj_cfg,
snd_config_t *parent)
{
snd_config_t *obj, *parent_obj, *section_cfg, *top;
const struct build_function_map *map;
const char *id, *parent_id;
int ret;
/* nothing to do if parent is NULL */
if (!parent)
return 0;
obj = tplg_object_get_instance_config(tplg_pp, obj_cfg);
parent_obj = tplg_object_get_instance_config(tplg_pp, parent);
/* get object ID */
if (snd_config_get_id(obj, &id) < 0) {
SNDERR("Invalid ID for object\n");
return -EINVAL;
}
/* get parent object name or ID */
parent_id = tplg_object_get_name(tplg_pp, parent_obj);
if (!parent_id) {
ret = snd_config_get_id(parent_obj, &parent_id);
if (ret < 0) {
SNDERR("Invalid ID for parent of object %s\n", id);
return ret;
}
}
map = tplg_object_get_map(tplg_pp, parent);
if (!map) {
SNDERR("Parent object %s not supported\n", parent_id);
return -EINVAL;
}
/* find parent config with ID */
ret = snd_config_search(tplg_pp->output_cfg, map->section_name, &section_cfg);
if (ret < 0) {
SNDERR("No SectionBE found\n");
return ret;
}
top = tplg_find_config(section_cfg, parent_id);
if (!top) {
SNDERR("SectionBE %s not found\n", parent_id);
return -EINVAL;
}
return tplg_add_object_data(tplg_pp, obj_cfg, top, id);
}
/*
* Function to create a new "section" config based on the template. The new config will be
* added to the output_cfg or the top_config input parameter.
*/
int tplg_build_object_from_template(struct tplg_pre_processor *tplg_pp, snd_config_t *obj_cfg,
snd_config_t **wtop, snd_config_t *top_config,
bool skip_name)
{
snd_config_t *top, *template, *obj;
const struct build_function_map *map;
const char *object_name;
int ret;
/* look up object map */
map = tplg_object_get_map(tplg_pp, obj_cfg);
if (!map) {
SNDERR("unknown object type or class name\n");
return -EINVAL;
}
obj = tplg_object_get_instance_config(tplg_pp, obj_cfg);
/* look up or create the corresponding section config for object */
if (!top_config)
top_config = tplg_pp->output_cfg;
ret = snd_config_search(top_config, map->section_name, &top);
if (ret < 0) {
ret = tplg_config_make_add(&top, map->section_name, SND_CONFIG_TYPE_COMPOUND,
top_config);
if (ret < 0) {
SNDERR("Error creating %s config\n", map->section_name);
return ret;
}
}
/* get object name */
object_name = tplg_object_get_name(tplg_pp, obj);
if (!object_name) {
ret = snd_config_get_id(obj, &object_name);
if (ret < 0) {
SNDERR("Invalid ID for %s\n", map->section_name);
return ret;
}
}
tplg_pp_debug("Building object: '%s' ...", object_name);
/* create and add new object config with name, if needed */
if (skip_name) {
*wtop = top;
} else {
*wtop = tplg_find_config(top, object_name);
if (*wtop)
goto template;
ret = tplg_config_make_add(wtop, object_name, SND_CONFIG_TYPE_COMPOUND,
top);
if (ret < 0) {
SNDERR("Error creating config for %s\n", object_name);
return ret;
}
}
template:
/* create template config */
if (!map->template_items)
return 0;
ret = tplg_create_config_template(tplg_pp, &template, map->template_items);
if (ret < 0) {
SNDERR("Error creating template config for %s\n", object_name);
return ret;
}
/* update section config based on template and the attribute values in the object */
ret = tplg_object_add_attributes(*wtop, template, obj);
snd_config_delete(template);
if (ret < 0)
SNDERR("Error adding attributes for object '%s'\n", object_name);
return ret;
}
static int tplg_build_generic_object(struct tplg_pre_processor *tplg_pp, snd_config_t *obj_cfg,
snd_config_t *parent)
{
snd_config_t *wtop;
const char *name;
int ret;
ret = tplg_build_object_from_template(tplg_pp, obj_cfg, &wtop, NULL, false);
if (ret < 0)
return ret;
ret = snd_config_get_id(wtop, &name);
if (ret < 0)
return ret;
ret = tplg_add_object_data(tplg_pp, obj_cfg, wtop, NULL);
if (ret < 0)
SNDERR("Failed to add data section for %s\n", name);
return ret;
}
const struct config_template_items pcm_caps_config = {
.int_config_ids = {"rate_min", "rate_max", "channels_min", "channels_max", "periods_min",
"periods_max", "period_size_min", "period_size_max", "buffer_size_min",
"buffer_size_max", "sig_bits"},
.string_config_ids = {"formats", "rates"},
};
const struct config_template_items fe_dai_config = {
.int_config_ids = {"id"},
};
const struct config_template_items hwcfg_config = {
.int_config_ids = {"id", "bclk_freq", "bclk_invert", "fsync_invert", "fsync_freq",
"mclk_freq", "pm_gate_clocks", "tdm_slots", "tdm_slot_width",
"tx_slots", "rx_slots", "tx_channels", "rx_channels"},
.string_config_ids = {"format", "bclk", "fsync", "mclk"},
};
const struct config_template_items be_dai_config = {
.int_config_ids = {"id", "default_hw_conf_id", "symmertic_rates", "symmetric_channels",
"symmetric_sample_bits"},
.string_config_ids = {"stream_name"},
};
const struct config_template_items pcm_config = {
.int_config_ids = {"id", "compress", "symmertic_rates", "symmetric_channels",
"symmetric_sample_bits"},
};
const struct config_template_items mixer_control_config = {
.int_config_ids = {"index", "max", "invert"},
.compound_config_ids = {"access"}
};
const struct config_template_items bytes_control_config = {
.int_config_ids = {"index", "base", "num_regs", "max", "mask"},
.compound_config_ids = {"access"}
};
const struct config_template_items scale_config = {
.int_config_ids = {"min", "step", "mute"},
};
const struct config_template_items ops_config = {
.int_config_ids = {"get", "put"},
.string_config_ids = {"info"},
};
const struct config_template_items channel_config = {
.int_config_ids = {"reg", "shift"},
};
const struct config_template_items widget_config = {
.int_config_ids = {"index", "no_pm", "shift", "invert", "subseq", "event_type",
"event_flags"},
.string_config_ids = {"type", "stream_name"},
};
const struct config_template_items data_config = {
.string_config_ids = {"bytes"}
};
/*
* Items without class name should be placed lower than those with one,
* because they are much more generic.
*/
const struct build_function_map object_build_map[] = {
{"Base", "manifest", "SectionManifest", &tplg_build_generic_object, NULL, NULL},
{"Base", "data", "SectionData", &tplg_build_data_object, NULL, &data_config},
{"Base", "tlv", "SectionTLV", &tplg_build_tlv_object, NULL, NULL},
{"Base", "scale", "scale", &tplg_build_scale_object, NULL, &scale_config},
{"Base", "ops", "ops" ,&tplg_build_ops_object, NULL, &ops_config},
{"Base", "extops", "extops" ,&tplg_build_ops_object, NULL, &ops_config},
{"Base", "channel", "channel", &tplg_build_channel_object, NULL, &channel_config},
{"Base", "VendorToken", "SectionVendorTokens", &tplg_build_vendor_token_object,
NULL, NULL},
{"Base", "hw_config", "SectionHWConfig", &tplg_build_hw_cfg_object, NULL,
&hwcfg_config},
{"Base", "fe_dai", "dai", &tplg_build_fe_dai_object, NULL, &fe_dai_config},
{"Base", "route", "SectionGraph", &tplg_build_dapm_route_object, NULL, NULL},
{"Widget", "buffer", "SectionWidget", &tplg_build_generic_object, NULL, &widget_config},
{"Widget", "", "SectionWidget", &tplg_build_generic_object, NULL, &widget_config},
{"Control", "mixer", "SectionControlMixer", &tplg_build_mixer_control, NULL,
&mixer_control_config},
{"Control", "bytes", "SectionControlBytes", &tplg_build_bytes_control, NULL,
&bytes_control_config},
{"Dai", "", "SectionBE", &tplg_build_generic_object, NULL, &be_dai_config},
{"PCM", "pcm", "SectionPCM", &tplg_build_generic_object, NULL, &pcm_config},
{"PCM", "pcm_caps", "SectionPCMCapabilities", &tplg_build_pcm_caps_object,
NULL, &pcm_caps_config},
};
static const struct build_function_map *tplg_object_get_map(struct tplg_pre_processor *tplg_pp,
snd_config_t *obj)
{
snd_config_iterator_t first;
snd_config_t *class;
const char *class_type, *class_name;
unsigned int i;
first = snd_config_iterator_first(obj);
class = snd_config_iterator_entry(first);
if (snd_config_get_id(class, &class_name) < 0)
return NULL;
if (snd_config_get_id(obj, &class_type) < 0)
return NULL;
for (i = 0; i < ARRAY_SIZE(object_build_map); i++) {
if (!strcmp(class_type, "Widget") &&
!strcmp(object_build_map[i].class_type, "Widget") &&
!strcmp(object_build_map[i].class_name, ""))
return &object_build_map[i];
if (!strcmp(class_type, "Dai") &&
!strcmp(object_build_map[i].class_type, "Dai"))
return &object_build_map[i];
/* for other type objects, also match the object class_name */
if (!strcmp(class_type, object_build_map[i].class_type) &&
!strcmp(object_build_map[i].class_name, class_name))
return &object_build_map[i];
}
return NULL;
}
/* search for section name based on class type and name and return the config in output_cfg */
snd_config_t *tplg_object_get_section(struct tplg_pre_processor *tplg_pp, snd_config_t *class)
{
const struct build_function_map *map;
snd_config_t *cfg = NULL;
int ret;
map = tplg_object_get_map(tplg_pp, class);
if (!map)
return NULL;
ret = snd_config_search(tplg_pp->output_cfg, map->section_name, &cfg);
if (ret < 0)
SNDERR("Section config for %s not found\n", map->section_name);
return cfg;
}
/* return 1 if attribute not found in search_config, 0 on success and negative value on error */
static int tplg_object_copy_and_add_param(struct tplg_pre_processor *tplg_pp,
snd_config_t *obj,
snd_config_t *attr_cfg,
snd_config_t *search_config)
{
snd_config_iterator_t first = snd_config_iterator_first(obj);
snd_config_t *attr, *new, *first_cfg;
const char *id, *search_id;
int ret;
first_cfg = snd_config_iterator_entry(first);
if (snd_config_get_id(attr_cfg, &id) < 0)
return 0;
if (snd_config_get_id(search_config, &search_id) < 0)
return 0;
/* copy object value */
ret = snd_config_search(search_config, id, &attr);
if (ret < 0)
return 1;
ret = snd_config_copy(&new, attr);
if (ret < 0) {
SNDERR("error copying attribute '%s' value from %s\n", id, search_id);
return ret;
}
if (first_cfg) {
/* prepend the new config */
ret = snd_config_add_before(first_cfg, new);
if (ret < 0) {
snd_config_delete(new);
SNDERR("error prepending attribute '%s' value to %s\n", id, search_id);
}
} else {
ret = snd_config_add(obj, new);
if (ret < 0) {
snd_config_delete(new);
SNDERR("error adding attribute '%s' value to %s\n", id, search_id);
}
}
return ret;
}
/*
* Attribute values for an object can be set in one of the following in order of
* precedence:
* 1. Value set in object instance
* 2. Default value set in the object's class definition
* 3. Inherited value from the parent object
* 4. Value set in the object instance embedded in the parent object
* 5. Value set in the object instance embedded in the parent class definition
*/
static int tplg_object_update(struct tplg_pre_processor *tplg_pp, snd_config_t *obj,
snd_config_t *parent)
{
snd_config_iterator_t i, next;
snd_config_t *n, *cfg, *args;
snd_config_t *obj_cfg, *class_cfg, *parent_obj;
const char *obj_id, *class_name, *class_type;
int ret;
class_cfg = tplg_class_lookup(tplg_pp, obj);
if (!class_cfg)
return -EINVAL;
/* find config for class attributes */
ret = snd_config_search(class_cfg, "DefineAttribute", &args);
if (ret < 0)
return 0;
if (snd_config_get_id(obj, &class_type) < 0)
return 0;
if (snd_config_get_id(class_cfg, &class_name) < 0)
return 0;
/* get obj cfg */
obj_cfg = tplg_object_get_instance_config(tplg_pp, obj);
if (snd_config_get_id(obj_cfg, &obj_id) < 0)
return 0;
/* copy and add attributes */
snd_config_for_each(i, next, args) {
snd_config_t *attr;
const char *id;
n = snd_config_iterator_entry(i);
if (snd_config_get_id(n, &id) < 0)
continue;
if (tplg_class_is_attribute_unique(id, class_cfg))
continue;
if (tplg_class_is_attribute_immutable(id, class_cfg))
goto class;
/* check if attribute value is set in the object */
ret = snd_config_search(obj_cfg, id, &attr);
if (ret < 0)
goto class;
continue;
class:
/* search for attributes value in class */
ret = tplg_object_copy_and_add_param(tplg_pp, obj_cfg, n, class_cfg);
if (ret == 1) {
if (tplg_class_is_attribute_immutable(id, class_cfg)) {
SNDERR("Immutable attribute %s not set in class %s\n",
id, class_name);
return -EINVAL;
}
goto parent;
}
else if (ret < 0)
return ret;
continue;
parent:
/* search for attribute value in parent */
if (!parent)
goto parent_object;
/* get parent obj cfg */
parent_obj = tplg_object_get_instance_config(tplg_pp, parent);
if (!parent_obj)
goto parent_object;
ret = tplg_object_copy_and_add_param(tplg_pp, obj_cfg, n, parent_obj);
if (ret == 1)
goto parent_object;
else if (ret < 0)
return ret;
continue;
parent_object:
if (!parent)
goto parent_class;
cfg = tplg_object_lookup_in_config(tplg_pp, parent_obj, class_type,
class_name, obj_id);
if (!cfg)
goto parent_class;
ret = tplg_object_copy_and_add_param(tplg_pp, obj_cfg, n, cfg);
if (ret == 1)
goto parent_class;
else if (ret < 0)
return ret;
continue;
parent_class:
if (!parent)
goto check;
cfg = tplg_class_lookup(tplg_pp, parent);
if (!cfg)
return -EINVAL;
cfg = tplg_object_lookup_in_config(tplg_pp, cfg, class_type,
class_name, obj_id);
if (!cfg)
goto check;
ret = tplg_object_copy_and_add_param(tplg_pp, obj_cfg, n, cfg);
if (ret == 1)
goto check;
else if (ret < 0)
return ret;
continue;
check:
if (tplg_class_is_attribute_mandatory(id, class_cfg)) {
SNDERR("Mandatory attribute %s not set for class %s\n", id, class_name);
return -EINVAL;
}
}
return 0;
}
static int tplg_object_pre_process_children(struct tplg_pre_processor *tplg_pp,
snd_config_t *parent, snd_config_t *cfg)
{
snd_config_iterator_t i, next;
snd_config_t *children, *n;
int ret;
ret = snd_config_search(cfg, "Object", &children);
if (ret < 0)
return 0;
/* create all embedded objects */
snd_config_for_each(i, next, children) {
const char *id;
n = snd_config_iterator_entry(i);
if (snd_config_get_id(n, &id) < 0)
continue;
ret = tplg_pre_process_objects(tplg_pp, n, parent);
if (ret < 0)
return ret;
}
return 0;
}
static int tplg_construct_object_name(struct tplg_pre_processor *tplg_pp, snd_config_t *obj,
snd_config_t *class_cfg)
{
snd_config_iterator_t i, next;
snd_config_t *args, *n;
const char *id, *class_id, *obj_id, *s;
char *new_name;
int ret;
/* find config for class constructor attributes. Nothing to do if not defined */
ret = snd_config_search(class_cfg, "attributes.constructor", &args);
if (ret < 0)
return 0;
/* set class name as the name prefix for the object */
if (snd_config_get_id(obj, &obj_id) < 0)
return -EINVAL;
if (snd_config_get_id(class_cfg, &class_id) < 0)
return -EINVAL;
new_name = strdup(class_id);
if (!new_name)
return -ENOMEM;
/* iterate through all class arguments and set object name */
snd_config_for_each(i, next, args) {
snd_config_t *arg;
char *arg_value, *temp;
n = snd_config_iterator_entry(i);
if (snd_config_get_id(n, &id) < 0) {
SNDERR("Invalid ID for constructor argument\n");
ret = -EINVAL;
goto err;
}
if (snd_config_get_string(n, &s) < 0) {
SNDERR("Invalid value for constructor argument\n");
ret = -EINVAL;
goto err;
}
/* find and replace with value set in object */
ret = snd_config_search(obj, s, &arg);
if (ret < 0) {
SNDERR("Argument %s not set for object '%s.%s'\n", s, class_id, obj_id);
ret = -ENOENT;
goto err;
}
/* concat arg value to object name. arg types must be either integer or string */
switch (snd_config_get_type(arg)) {
case SND_CONFIG_TYPE_INTEGER:
{
long v;
ret = snd_config_get_integer(arg, &v);
assert(ret >= 0);
arg_value = tplg_snprintf("%ld", v);
if (!arg_value) {
ret = -ENOMEM;
goto err;
}
break;
}
case SND_CONFIG_TYPE_STRING:
{
const char *s;
ret = snd_config_get_string(arg, &s);
assert(ret >= 0);
arg_value = strdup(s);
if (!arg_value) {
ret = -ENOMEM;
goto err;
}
break;
}
default:
SNDERR("Argument '%s' in object '%s.%s' is not an integer or a string\n",
s, class_id, obj_id);
ret = -EINVAL;
goto err;
}
/* alloc and concat arg value to the name */
temp = tplg_snprintf("%s.%s", new_name, arg_value);
free(arg_value);
if (!temp) {
ret = -ENOMEM;
goto err;
}
free(new_name);
new_name = temp;
}
ret = snd_config_set_id(obj, new_name);
err:
free(new_name);
return ret;
}
/* set the attribute value by type */
static int tplg_set_attribute_value(snd_config_t *attr, const char *value)
{
int err;
snd_config_type_t type = snd_config_get_type(attr);
switch (type) {
case SND_CONFIG_TYPE_INTEGER:
{
long v;
v = strtol(value, NULL, 10);
err = snd_config_set_integer(attr, v);
assert(err >= 0);
break;
}
case SND_CONFIG_TYPE_INTEGER64:
{
long long v;
v = strtoll(value, NULL, 10);
err = snd_config_set_integer64(attr, v);
assert(err >= 0);
break;
}
case SND_CONFIG_TYPE_STRING:
{
err = snd_config_set_string(attr, value);
assert(err >= 0);
break;
}
default:
return -EINVAL;
}
return 0;
}
/*
* Find the unique attribute in the class definition and set its value and type.
* Only string or integer types are allowed for unique values.
*/
static int tplg_object_set_unique_attribute(struct tplg_pre_processor *tplg_pp,
snd_config_t *obj, snd_config_t *class_cfg,
const char *id)
{
snd_config_t *unique_attr, *new;
const char *unique_name, *class_id;
int ret;
if (snd_config_get_id(class_cfg, &class_id) < 0)
return 0;
/* find config for class unique attribute */
unique_name = tplg_class_get_unique_attribute_name(tplg_pp, class_cfg);
if (!unique_name)
return -ENOENT;
/* find the unique attribute definition in the class */
unique_attr = tplg_class_find_attribute_by_name(tplg_pp, class_cfg, unique_name);
if (!unique_attr)
return -ENOENT;
/* override value if unique attribute is set in the object instance */
ret = snd_config_search(obj, unique_name, &new);
if (ret < 0) {
ret = snd_config_make(&new, unique_name,
tplg_class_get_attribute_type(tplg_pp, unique_attr));
if (ret < 0) {
SNDERR("error creating new attribute cfg for object %s\n", id);
return ret;
}
ret = snd_config_add(obj, new);
if (ret < 0) {
SNDERR("error adding new attribute cfg for object %s\n", id);
return ret;
}
}
ret = tplg_set_attribute_value(new, id);
if (ret < 0) {
SNDERR("error setting unique attribute cfg for object %s\n", id);
return ret;
}
return ret;
}
/*
* Helper function to get object instance config which is 2 nodes down from class_type config.
* ex: Get the pointer to the config node with ID "0" from the input config Widget.pga.0 {}
*/
snd_config_t *tplg_object_get_instance_config(struct tplg_pre_processor *tplg_pp,
snd_config_t *class_type)
{
snd_config_iterator_t first;
snd_config_t *cfg;
first = snd_config_iterator_first(class_type);
cfg = snd_config_iterator_entry(first);
first = snd_config_iterator_first(cfg);
return snd_config_iterator_entry(first);
}
#if SND_LIB_VER(1, 2, 5) < SND_LIB_VERSION
static int pre_process_find_variable(snd_config_t **dst, const char *str, snd_config_t *config)
{
snd_config_iterator_t i, next;
snd_config_for_each(i, next, config) {
snd_config_t *n;
const char *id;
n = snd_config_iterator_entry(i);
if (snd_config_get_id(n, &id) < 0)
continue;
if (strcmp(id, str))
continue;
/* found definition, copy config */
return snd_config_copy(dst, n);
}
return -EINVAL;
}
static int
pre_process_object_variables_expand_fcn(snd_config_t **dst, const char *str, void *private_data)
{
struct tplg_pre_processor *tplg_pp = private_data;
snd_config_t *object_cfg = tplg_pp->current_obj_cfg;
snd_config_t *conf_defines;
const char *object_id;
int ret;
ret = snd_config_search(tplg_pp->input_cfg, "Define", &conf_defines);
if (ret < 0)
return 0;
/* find variable from global definitions first */
ret = pre_process_find_variable(dst, str, conf_defines);
if (ret >= 0)
return ret;
if (snd_config_get_id(object_cfg, &object_id) < 0)
return -EINVAL;
/* find variable from object attribute values if not found in global definitions */
ret = pre_process_find_variable(dst, str, object_cfg);
if (ret < 0)
SNDERR("Failed to find definition for attribute %s in '%s' object\n",
str, object_id);
return ret;
}
/*
* Searches for the first '$VAR_NAME' or '$[<contents>]' occurrence in
* *stringp. Allocates memory for it and copies it there. The
* allocated string is returned in '*varname'. If there was a prefix
* before $VAR_NAME, it is returned in '*prefix'. The *stringp is
* moved forward to the char after the $VAR_NAME.
*
* The end of $VAR_NAME is the first char that is not alpha numeric, '_',
* or '\0'.
*
* In '$[<contents>]' case all letters but '[' and ']' are allow in
* any sequence. Nested '[]' is also allowed if the number if '[' and
* ']' match.
*
* The function modifies *stringp, and *prefix - if not NULL - points
* to the original *stringp, *varname - if not NULL - is malloced and
* should be freed by the caller.
*
* Returns 0 if the *stringp was an empty string.
* 1 if *prefix or *varname was set
* -ENOMEM if malloc failed
*/
static int tplg_get_varname(char **stringp, char **prefix, char **varname)
{
size_t prefix_len, varname_len = 0;
*prefix = NULL;
*varname = NULL;
prefix_len = strcspn(*stringp, "$");
*prefix = *stringp;
(*stringp) += prefix_len;
if (**stringp == '$') {
if ((*stringp)[1] == '[') {
int brackets = 1;
varname_len = 1;
do {
varname_len += strcspn((*stringp) + varname_len + 1, "[]") + 1;
if ((*stringp)[varname_len] == '[')
brackets++;
else if ((*stringp)[varname_len] == ']')
brackets--;
else
break;
} while (brackets > 0);
if (brackets != 0)
return -EINVAL;
varname_len++;
} else {
varname_len = 1;
while (isalnum((*stringp)[varname_len]) || (*stringp)[varname_len] == '_')
varname_len++;
}
}
if (varname_len == 0 && prefix_len == 0)
return 0;
if (varname_len) {
*varname = malloc(varname_len + 1);
if (*varname == NULL)
return -ENOMEM;
strncpy(*varname, *stringp, varname_len);
(*varname)[varname_len] = '\0';
(*stringp) += varname_len;
}
if (prefix_len)
(*prefix)[prefix_len] = '\0';
else
*prefix = NULL;
return 1;
}
static int tplg_evaluate_config_string(struct tplg_pre_processor *tplg_pp,
snd_config_t **dst, const char *s, const char *id)
{
char *str = strdup(s);
char *varname, *prefix, *freep = str;
int ret;
if (!str)
return -ENOMEM;
*dst = NULL;
/* split the string and expand global definitions or object attribute values */
while (tplg_get_varname(&str, &prefix, &varname) == 1) {
const char *current_str;
char *temp;
if (prefix) {
if (*dst == NULL) {
ret = snd_config_make(dst, id, SND_CONFIG_TYPE_STRING);
if (ret < 0)
goto out;
ret = snd_config_set_string(*dst, prefix);
if (ret < 0)
goto out;
} else {
/* concat the prefix */
snd_config_get_string(*dst, &current_str);
temp = tplg_snprintf("%s%s", current_str, prefix);
if (!temp) {
ret = -ENOMEM;
goto out;
}
ret = snd_config_set_string(*dst, temp);
free(temp);
if (ret < 0)
goto out;
}
}
if (varname) {
snd_config_t *tmp_config;
ret = snd_config_evaluate_string(&tmp_config, varname,
pre_process_object_variables_expand_fcn,
tplg_pp);
if (ret < 0)
goto out;
if (*dst == NULL) {
*dst = tmp_config;
} else {
char *ascii;
snd_config_get_string(*dst, &current_str);
ret = snd_config_get_ascii(tmp_config, &ascii);
if (ret)
goto out;
temp = tplg_snprintf("%s%s", current_str, ascii);
free(ascii);
if (!temp) {
ret = -ENOMEM;
goto out;
}
ret = snd_config_set_string(*dst, temp);
free(temp);
snd_config_delete(tmp_config);
if (ret < 0)
goto out;
}
free(varname);
}
}
free(freep);
snd_config_set_id(*dst, id);
return 0;
out:
if (*dst)
snd_config_delete(*dst);
free(varname);
free(freep);
return ret;
}
#endif
/* build object config and its child objects recursively */
static int tplg_build_object(struct tplg_pre_processor *tplg_pp, snd_config_t *new_obj,
snd_config_t *parent)
{
snd_config_t *obj_local, *class_cfg;
const struct build_function_map *map;
snd_config_iterator_t i, next;
build_func builder;
update_auto_attr_func auto_attr_updater;
const char *id, *class_id;
int ret;
obj_local = tplg_object_get_instance_config(tplg_pp, new_obj);
if (!obj_local)
return -EINVAL;
class_cfg = tplg_class_lookup(tplg_pp, new_obj);
if (!class_cfg)
return -EINVAL;
if (snd_config_get_id(obj_local, &id) < 0)
return 0;
if (snd_config_get_id(class_cfg, &class_id) < 0)
return 0;
/* set unique attribute value */
ret = tplg_object_set_unique_attribute(tplg_pp, obj_local, class_cfg, id);
if (ret < 0) {
SNDERR("error setting unique attribute value for '%s.%s'\n", class_id, id);
return ret;
}
/* update object attributes and validate them */
ret = tplg_object_update(tplg_pp, new_obj, parent);
if (ret < 0) {
SNDERR("Failed to update attributes for object '%s.%s'\n", class_id, id);
return ret;
}
#if SND_LIB_VER(1, 2, 5) < SND_LIB_VERSION
tplg_pp_config_debug(tplg_pp, obj_local);
/* expand all non-compound type child configs in object */
snd_config_for_each(i, next, obj_local) {
snd_config_t *n, *new, *class_attr;
const char *id, *s;
char *attr_config_name;
n = snd_config_iterator_entry(i);
if (snd_config_get_type(n) == SND_CONFIG_TYPE_COMPOUND)
continue;
if (snd_config_get_id(n, &id) < 0)
continue;
if (snd_config_get_string(n, &s) < 0)
continue;
if (!strstr(s, "$"))
goto validate;
tplg_pp->current_obj_cfg = obj_local;
/* Expand definitions and object attribute references. */
ret = tplg_evaluate_config_string(tplg_pp, &new, s, id);
if (ret < 0) {
SNDERR("Failed to evaluate attributes %s in %s, from '%s'\n",
id, class_id, s);
return ret;
}
ret = snd_config_merge(n, new, true);
if (ret < 0)
return ret;
validate:
/* validate attribute value */
snd_config_get_id(n, &id);
attr_config_name = tplg_snprintf("DefineAttribute.%s", id);
if (!attr_config_name)
return -ENOMEM;
ret = snd_config_search(class_cfg, attr_config_name, &class_attr);
free(attr_config_name);
if (ret < 0)
continue;
if (!tplg_object_is_attribute_valid(tplg_pp, class_attr, n)) {
SNDERR("Failed to validate attribute %s in %s\n", id, class_id);
return -EINVAL;
}
}
#endif
/* construct object name using class constructor */
ret = tplg_construct_object_name(tplg_pp, obj_local, class_cfg);
if (ret < 0) {
SNDERR("Failed to construct object name for %s\n", id);
return ret;
}
/*
* Build objects if object type is supported.
* If not, process object attributes and add to parent's data section
*/
map = tplg_object_get_map(tplg_pp, new_obj);
if (map) {
builder = map->builder;
/* update automatic attribute for current object */
auto_attr_updater = map->auto_attr_updater;
if(auto_attr_updater) {
ret = auto_attr_updater(tplg_pp, obj_local, parent);
if (ret < 0) {
SNDERR("Failed to update automatic attributes for %s\n", id);
return ret;
}
}
} else {
builder = &tplg_build_parent_data;
}
ret = builder(tplg_pp, new_obj, parent);
if (ret < 0)
return ret;
/* create child objects in the object instance */
ret = tplg_object_pre_process_children(tplg_pp, new_obj, obj_local);
if (ret < 0) {
SNDERR("error processing child objects in object %s\n", id);
return ret;
}
/* create child objects in the object's class definition */
ret = tplg_object_pre_process_children(tplg_pp, new_obj, class_cfg);
if (ret < 0)
SNDERR("error processing child objects in class %s\n", class_id);
return ret;
}
/* create top-level topology objects */
int tplg_pre_process_objects(struct tplg_pre_processor *tplg_pp, snd_config_t *cfg,
snd_config_t *parent)
{
snd_config_iterator_t i, next, i2, next2;
snd_config_t *n, *n2, *_obj_type, *_obj_class, *_obj;
const char *id, *class_type, *class_name;
int ret;
if (snd_config_get_id(cfg, &class_type) < 0)
return 0;
/* create all objects of the same type and class */
snd_config_for_each(i, next, cfg) {
n = snd_config_iterator_entry(i);
if (snd_config_get_id(n, &class_name) < 0)
continue;
snd_config_for_each(i2, next2, n) {
snd_config_t *temp_n2;
n2 = snd_config_iterator_entry(i2);
if (snd_config_get_id(n2, &id) < 0) {
SNDERR("Invalid id for object\n");
return -EINVAL;
}
ret = snd_config_copy(&temp_n2, n2);
if (ret < 0)
return ret;
/*
* An object declared within a class definition as follows:
* Class.Pipeline.volume-playback {
* Object.Widget.pga.0 {
* ramp_step_ms 250
* }
* }
*
* While instantiating the volume-pipeline class, the pga object
* could be modified as follows:
* Object.Pipeline.volume-playback.0 {
* Object.Widget.pga.0 {
* format "s24le"
* }
* }
* When building the pga.0 object in the class definition, merge
* the attributes declared in the volume-playback.0 object to create
* a new config as follows to make sure that all attributes are
* set for the pga object.
* Object.Widget.pga.0 {
* ramp_step_ms 250
* format "s24le"
* }
*/
if (parent) {
snd_config_t *parent_instance, *parent_obj, *temp;
char *obj_cfg_name;
obj_cfg_name = tplg_snprintf("%s%s.%s.%s", "Object.",
class_type, class_name, id);
/* search for object instance in the parent */
parent_instance = tplg_object_get_instance_config(tplg_pp, parent);
if (!parent_instance)
goto temp_cfg;
ret = snd_config_search(parent_instance, obj_cfg_name, &parent_obj);
free(obj_cfg_name);
if (ret < 0)
goto temp_cfg;
/* don't merge if the object configs are the same */
if (parent_obj == n2)
goto temp_cfg;
/* create a temp config copying the parent object config */
ret = snd_config_copy(&temp, parent_obj);
if (ret < 0) {
snd_config_delete(temp_n2);
return ret;
}
/*
* Merge parent object with the current object instance.
* temp will be deleted by merge
*/
ret = snd_config_merge(temp_n2, temp, false);
if (ret < 0) {
SNDERR("error merging parent object config for %s.%s.%s\n",
class_type, class_name, id);
snd_config_delete(temp_n2);
return ret;
}
}
temp_cfg:
/* create a temp config for object with class type as the root node */
ret = snd_config_make(&_obj_type, class_type, SND_CONFIG_TYPE_COMPOUND);
if (ret < 0) {
snd_config_delete(temp_n2);
return ret;
}
ret = snd_config_make(&_obj_class, class_name, SND_CONFIG_TYPE_COMPOUND);
if (ret < 0)
goto err;
ret = snd_config_add(_obj_type, _obj_class);
if (ret < 0) {
snd_config_delete(_obj_class);
goto err;
}
ret = snd_config_copy(&_obj, temp_n2);
if (ret < 0)
goto err;
ret = snd_config_add(_obj_class, _obj);
if (ret < 0) {
snd_config_delete(_obj);
goto err;
}
/* Build the object now */
ret = tplg_build_object(tplg_pp, _obj_type, parent);
if (ret < 0)
SNDERR("Error building object %s.%s.%s\n",
class_type, class_name, id);
err:
snd_config_delete(temp_n2);
snd_config_delete(_obj_type);
if (ret < 0)
return ret;
}
}
return 0;
}
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