[alsa-devel] [PATCH v3 07/13] topology: Add DAPM object parser
Liam Girdwood
liam.r.girdwood at linux.intel.com
Wed Jul 29 18:45:19 CEST 2015
Parse DAPM objects including widgets and graph elements.
Signed-off-by: Liam Girdwood <liam.r.girdwood at linux.intel.com>
---
src/topology/dapm.c | 562 ++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 562 insertions(+)
create mode 100644 src/topology/dapm.c
diff --git a/src/topology/dapm.c b/src/topology/dapm.c
new file mode 100644
index 0000000..1da82ad
--- /dev/null
+++ b/src/topology/dapm.c
@@ -0,0 +1,562 @@
+/*
+ Copyright(c) 2014-2015 Intel Corporation
+ All rights reserved.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of version 2 of the GNU General Public License as
+ published by the Free Software Foundation.
+
+ This program is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ Authors: Mengdong Lin <mengdong.lin at intel.com>
+ Yao Jin <yao.jin at intel.com>
+ Liam Girdwood <liam.r.girdwood at linux.intel.com>
+*/
+
+#include "list.h"
+#include "tplg_local.h"
+
+/* mapping of widget text names to types */
+static const struct map_elem widget_map[] = {
+ {"input", SND_SOC_TPLG_DAPM_INPUT},
+ {"output", SND_SOC_TPLG_DAPM_OUTPUT},
+ {"mux", SND_SOC_TPLG_DAPM_MUX},
+ {"mixer", SND_SOC_TPLG_DAPM_MIXER},
+ {"pga", SND_SOC_TPLG_DAPM_PGA},
+ {"out_drv", SND_SOC_TPLG_DAPM_OUT_DRV},
+ {"adc", SND_SOC_TPLG_DAPM_ADC},
+ {"dac", SND_SOC_TPLG_DAPM_DAC},
+ {"switch", SND_SOC_TPLG_DAPM_SWITCH},
+ {"pre", SND_SOC_TPLG_DAPM_PRE},
+ {"post", SND_SOC_TPLG_DAPM_POST},
+ {"aif_in", SND_SOC_TPLG_DAPM_AIF_IN},
+ {"aif_out", SND_SOC_TPLG_DAPM_AIF_OUT},
+ {"dai_in", SND_SOC_TPLG_DAPM_DAI_IN},
+ {"dai_out", SND_SOC_TPLG_DAPM_DAI_OUT},
+ {"dai_link", SND_SOC_TPLG_DAPM_DAI_LINK},
+};
+
+/* mapping of widget kcontrol text names to types */
+static const struct map_elem widget_control_map[] = {
+ {"volsw", SND_SOC_TPLG_DAPM_CTL_VOLSW},
+ {"enum_double", SND_SOC_TPLG_DAPM_CTL_ENUM_DOUBLE},
+ {"enum_virt", SND_SOC_TPLG_DAPM_CTL_ENUM_VIRT},
+ {"enum_value", SND_SOC_TPLG_DAPM_CTL_ENUM_VALUE},
+};
+
+static int lookup_widget(const char *w)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(widget_map); i++) {
+ if (strcmp(widget_map[i].name, w) == 0)
+ return widget_map[i].id;
+ }
+
+ return -EINVAL;
+}
+
+static int tplg_parse_dapm_mixers(snd_config_t *cfg, struct tplg_elem *elem)
+{
+ snd_config_iterator_t i, next;
+ snd_config_t *n;
+ const char *value = NULL;
+
+ tplg_dbg(" DAPM Mixer Controls: %s\n", elem->id);
+
+ snd_config_for_each(i, next, cfg) {
+ n = snd_config_iterator_entry(i);
+
+ /* get value */
+ if (snd_config_get_string(n, &value) < 0)
+ continue;
+
+ tplg_ref_add(elem, OBJECT_TYPE_MIXER, value);
+ tplg_dbg("\t\t %s\n", value);
+ }
+
+ return 0;
+}
+
+static int tplg_parse_dapm_enums(snd_config_t *cfg, struct tplg_elem *elem)
+{
+ snd_config_iterator_t i, next;
+ snd_config_t *n;
+ const char *value = NULL;
+
+ tplg_dbg(" DAPM Enum Controls: %s\n", elem->id);
+
+ snd_config_for_each(i, next, cfg) {
+ n = snd_config_iterator_entry(i);
+
+ /* get value */
+ if (snd_config_get_string(n, &value) < 0)
+ continue;
+
+ tplg_ref_add(elem, OBJECT_TYPE_ENUM, value);
+ tplg_dbg("\t\t %s\n", value);
+ }
+
+ return 0;
+}
+
+/* move referenced controls to the widget */
+static int copy_dapm_control(struct tplg_elem *elem, struct tplg_elem *ref)
+{
+ struct snd_soc_tplg_dapm_widget *widget = elem->widget;
+ struct snd_soc_tplg_mixer_control *mixer_ctrl = ref->mixer_ctrl;
+ struct snd_soc_tplg_enum_control *enum_ctrl = ref->enum_ctrl;
+
+ tplg_dbg("Control '%s' used by '%s'\n", ref->id, elem->id);
+ tplg_dbg("\tparent size: %d + %d -> %d, priv size -> %d\n",
+ elem->size, ref->size, elem->size + ref->size,
+ widget->priv.size);
+
+ widget = realloc(widget, elem->size + ref->size);
+ if (!widget)
+ return -ENOMEM;
+
+ elem->widget = widget;
+
+ /* copy new widget at the end */
+ if (ref->type == OBJECT_TYPE_MIXER)
+ memcpy((void*)widget + elem->size, mixer_ctrl, ref->size);
+ else if (ref->type == OBJECT_TYPE_ENUM)
+ memcpy((void*)widget + elem->size, enum_ctrl, ref->size);
+
+ elem->size += ref->size;
+ widget->num_kcontrols++;
+ ref->compound_elem = 1;
+ return 0;
+}
+
+/* check referenced controls for a widget */
+static int tplg_build_widget(snd_tplg_t *tplg,
+ struct tplg_elem *elem)
+{
+ struct tplg_ref *ref;
+ struct list_head *base, *pos;
+ int err = 0;
+
+ base = &elem->ref_list;
+
+ /* for each ref in this control elem */
+ list_for_each(pos, base) {
+
+ ref = list_entry(pos, struct tplg_ref, list);
+ if (ref->id == NULL || ref->elem)
+ continue;
+
+ switch (ref->type) {
+ case OBJECT_TYPE_MIXER:
+ ref->elem = tplg_elem_lookup(&tplg->mixer_list,
+ ref->id, OBJECT_TYPE_MIXER);
+ if (ref->elem)
+ err = copy_dapm_control(elem, ref->elem);
+ break;
+
+ case OBJECT_TYPE_ENUM:
+ ref->elem = tplg_elem_lookup(&tplg->enum_list,
+ ref->id, OBJECT_TYPE_ENUM);
+ if (ref->elem)
+ err = copy_dapm_control(elem, ref->elem);
+ break;
+
+ case OBJECT_TYPE_DATA:
+ ref->elem = tplg_elem_lookup(&tplg->pdata_list,
+ ref->id, OBJECT_TYPE_DATA);
+ if (ref->elem)
+ err = tplg_copy_data(elem, ref->elem);
+ break;
+ default:
+ break;
+ }
+
+ if (!ref->elem) {
+ SNDERR("error: cannot find control '%s'"
+ " referenced by widget '%s'\n",
+ ref->id, elem->id);
+ return -EINVAL;
+ }
+
+ if (err < 0)
+ return err;
+ }
+
+ return 0;
+}
+
+int tplg_build_widgets(snd_tplg_t *tplg)
+{
+
+ struct list_head *base, *pos;
+ struct tplg_elem *elem;
+ int err;
+
+ base = &tplg->widget_list;
+ list_for_each(pos, base) {
+
+ elem = list_entry(pos, struct tplg_elem, list);
+ if (!elem->widget || elem->type != OBJECT_TYPE_DAPM_WIDGET) {
+ SNDERR("error: invalid widget '%s'\n",
+ elem->id);
+ return -EINVAL;
+ }
+
+ err = tplg_build_widget(tplg, elem);
+ if (err < 0)
+ return err;
+
+ /* add widget to manifest */
+ tplg->manifest.widget_elems++;
+ }
+
+ return 0;
+}
+
+int tplg_build_routes(snd_tplg_t *tplg)
+{
+ struct list_head *base, *pos;
+ struct tplg_elem *elem;
+ struct snd_soc_tplg_dapm_graph_elem *route;
+
+ base = &tplg->route_list;
+
+ list_for_each(pos, base) {
+ elem = list_entry(pos, struct tplg_elem, list);
+
+ if (!elem->route || elem->type != OBJECT_TYPE_DAPM_GRAPH) {
+ SNDERR("error: invalid route '%s'\n",
+ elem->id);
+ return -EINVAL;
+ }
+
+ route = elem->route;
+ tplg_dbg("\nCheck route: sink '%s', control '%s', source '%s'\n",
+ route->sink, route->control, route->source);
+
+ /* validate sink */
+ if (strlen(route->sink) <= 0) {
+ SNDERR("error: no sink\n");
+ return -EINVAL;
+
+ }
+ if (!tplg_elem_lookup(&tplg->widget_list, route->sink,
+ OBJECT_TYPE_DAPM_WIDGET)) {
+ SNDERR("warning: undefined sink widget/stream '%s'\n",
+ route->sink);
+ }
+
+ /* validate control name */
+ if (strlen(route->control)) {
+ if (!tplg_elem_lookup(&tplg->mixer_list,
+ route->control, OBJECT_TYPE_MIXER) &&
+ !tplg_elem_lookup(&tplg->enum_list,
+ route->control, OBJECT_TYPE_ENUM)) {
+ SNDERR("warning: Undefined mixer/enum control '%s'\n",
+ route->control);
+ }
+ }
+
+ /* validate source */
+ if (strlen(route->source) <= 0) {
+ SNDERR("error: no source\n");
+ return -EINVAL;
+
+ }
+ if (!tplg_elem_lookup(&tplg->widget_list, route->source,
+ OBJECT_TYPE_DAPM_WIDGET)) {
+ SNDERR("warning: Undefined source widget/stream '%s'\n",
+ route->source);
+ }
+
+ /* add graph to manifest */
+ tplg->manifest.graph_elems++;
+ }
+
+ return 0;
+}
+
+#define LINE_SIZE 1024
+
+/* line is defined as '"source, control, sink"' */
+static int tplg_parse_line(const char *text,
+ struct snd_soc_tplg_dapm_graph_elem *line)
+{
+ char buf[LINE_SIZE];
+ unsigned int len, i;
+ const char *source = NULL, *sink = NULL, *control = NULL;
+
+ elem_copy_text(buf, text, LINE_SIZE);
+
+ len = strlen(buf);
+ if (len <= 2) {
+ SNDERR("error: invalid route \"%s\"\n", buf);
+ return -EINVAL;
+ }
+
+ /* find first , */
+ for (i = 1; i < len; i++) {
+ if (buf[i] == ',')
+ goto second;
+ }
+ SNDERR("error: invalid route \"%s\"\n", buf);
+ return -EINVAL;
+
+second:
+ /* find second , */
+ sink = buf;
+ control = &buf[i + 2];
+ buf[i] = 0;
+
+ for (; i < len; i++) {
+ if (buf[i] == ',')
+ goto done;
+ }
+
+ SNDERR("error: invalid route \"%s\"\n", buf);
+ return -EINVAL;
+
+done:
+ buf[i] = 0;
+ source = &buf[i + 2];
+
+ strcpy(line->source, source);
+ strcpy(line->control, control);
+ strcpy(line->sink, sink);
+ return 0;
+}
+
+
+static int tplg_parse_routes(snd_tplg_t *tplg, snd_config_t *cfg)
+{
+ snd_config_iterator_t i, next;
+ snd_config_t *n;
+ struct tplg_elem *elem;
+ struct snd_soc_tplg_dapm_graph_elem *line = NULL;
+ int err;
+
+ snd_config_for_each(i, next, cfg) {
+ const char *val;
+
+ n = snd_config_iterator_entry(i);
+ if (snd_config_get_string(n, &val) < 0)
+ continue;
+
+ elem = tplg_elem_new();
+ if (!elem)
+ return -ENOMEM;
+
+ list_add_tail(&elem->list, &tplg->route_list);
+ strcpy(elem->id, "line");
+ elem->type = OBJECT_TYPE_DAPM_GRAPH;
+ elem->size = sizeof(*line);
+
+ line = calloc(1, sizeof(*line));
+ if (!line)
+ return -ENOMEM;
+
+ elem->route = line;
+
+ err = tplg_parse_line(val, line);
+ if (err < 0)
+ return err;
+
+ tplg_dbg("route: sink '%s', control '%s', source '%s'\n",
+ line->sink, line->control, line->source);
+ }
+
+ return 0;
+}
+
+int tplg_parse_dapm_graph(snd_tplg_t *tplg, snd_config_t *cfg,
+ void *private ATTRIBUTE_UNUSED)
+{
+ snd_config_iterator_t i, next;
+ snd_config_t *n;
+ int err;
+ const char *graph_id;
+
+ if (snd_config_get_type(cfg) != SND_CONFIG_TYPE_COMPOUND) {
+ SNDERR("error: compound is expected for dapm graph definition\n");
+ return -EINVAL;
+ }
+
+ snd_config_get_id(cfg, &graph_id);
+
+ snd_config_for_each(i, next, cfg) {
+ const char *id;
+
+ n = snd_config_iterator_entry(i);
+ if (snd_config_get_id(n, &id) < 0) {
+ continue;
+ }
+
+ if (strcmp(id, "lines") == 0) {
+ err = tplg_parse_routes(tplg, n);
+ if (err < 0) {
+ SNDERR("error: failed to parse dapm graph %s\n",
+ graph_id);
+ return err;
+ }
+ continue;
+ }
+ }
+
+ return 0;
+}
+
+/* DAPM Widget */
+int tplg_parse_dapm_widget(snd_tplg_t *tplg,
+ snd_config_t *cfg, void *private ATTRIBUTE_UNUSED)
+{
+ struct snd_soc_tplg_dapm_widget *widget;
+ struct tplg_elem *elem;
+ snd_config_iterator_t i, next;
+ snd_config_t *n;
+ const char *id, *val = NULL;
+ int widget_type, err;
+
+ elem = tplg_elem_new_common(tplg, cfg, OBJECT_TYPE_DAPM_WIDGET);
+ if (!elem)
+ return -ENOMEM;
+
+ tplg_dbg(" Widget: %s\n", elem->id);
+
+ widget = elem->widget;
+ elem_copy_text(widget->name, elem->id, SNDRV_CTL_ELEM_ID_NAME_MAXLEN);
+ widget->size = elem->size;
+
+ 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, "type") == 0) {
+ if (snd_config_get_string(n, &val) < 0)
+ return -EINVAL;
+
+ widget_type = lookup_widget(val);
+ if (widget_type < 0){
+ SNDERR("Widget '%s': Unsupported widget type %s\n",
+ elem->id, val);
+ return -EINVAL;
+ }
+
+ widget->id = widget_type;
+ tplg_dbg("\t%s: %s\n", id, val);
+ continue;
+ }
+
+ if (strcmp(id, "no_pm") == 0) {
+ if (snd_config_get_string(n, &val) < 0)
+ return -EINVAL;
+
+ if (strcmp(val, "true") == 0)
+ widget->reg = -1;
+
+ tplg_dbg("\t%s: %s\n", id, val);
+ continue;
+ }
+
+ if (strcmp(id, "shift") == 0) {
+ if (snd_config_get_string(n, &val) < 0)
+ return -EINVAL;
+
+ widget->shift = atoi(val);
+ tplg_dbg("\t%s: %d\n", id, widget->shift);
+ continue;
+ }
+
+ if (strcmp(id, "reg") == 0) {
+ if (snd_config_get_string(n, &val) < 0)
+ return -EINVAL;
+
+ widget->reg = atoi(val);
+ tplg_dbg("\t%s: %d\n", id, widget->reg);
+ continue;
+ }
+
+ if (strcmp(id, "invert") == 0) {
+ if (snd_config_get_string(n, &val) < 0)
+ return -EINVAL;
+
+ widget->invert = atoi(val);
+ tplg_dbg("\t%s: %d\n", id, widget->invert);
+ continue;
+ }
+
+ if (strcmp(id, "subseq") == 0) {
+ if (snd_config_get_string(n, &val) < 0)
+ return -EINVAL;
+
+ widget->subseq= atoi(val);
+ tplg_dbg("\t%s: %d\n", id, widget->subseq);
+ continue;
+ }
+
+ if (strcmp(id, "event_type") == 0) {
+ if (snd_config_get_string(n, &val) < 0)
+ return -EINVAL;
+
+ widget->event_type = atoi(val);
+ tplg_dbg("\t%s: %d\n", id, widget->event_type);
+ continue;
+ }
+
+ if (strcmp(id, "event_flags") == 0) {
+ if (snd_config_get_string(n, &val) < 0)
+ return -EINVAL;
+
+ widget->event_flags = atoi(val);
+ tplg_dbg("\t%s: %d\n", id, widget->event_flags);
+ continue;
+ }
+
+ if (strcmp(id, "enum") == 0) {
+ err = tplg_parse_dapm_enums(n, elem);
+ if (err < 0)
+ return err;
+
+ continue;
+ }
+
+ if (strcmp(id, "mixer") == 0) {
+ err = tplg_parse_dapm_mixers(n, elem);
+ if (err < 0)
+ return err;
+
+ 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;
+}
--
2.1.4
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