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alsa: Catch role matched streams to enable/disable modifier

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In UCM basic functions, we only assign intended roles from modifier
to sink/source, but we don't have a chance to set the ucm modifiers.
Here we amend the functions so that when roled stream starts or
stops, we have the following results:
1. stream will be routed to sink/source specified in modifier by
   module-intended-roles
2. After that, modifier will be enabled or disabled.
3. when multiple streams with matched roles of modifier start, only
   the first one will enable the modifier, and when they end, the
   last one will disable the modifier.

Signed-off-by: Feng Wei <wei.feng@freescale.com>
Signed-off-by: Arun Raghavan <arun.raghavan@collabora.co.uk>
This commit is contained in:
Feng Wei 2012-07-17 18:17:21 +08:00 • committed by Arun Raghavan
parent 801f286dfd
commit 3a92bda554
5 changed files with 148 additions and 34 deletions
Download patch file Download diff file Expand all files Collapse all files

93
src/modules/alsa/module-alsa-card.c
View file

@ -124,6 +124,13 @@ struct userdata {
/* ucm stuffs */
pa_bool_t use_ucm;
pa_alsa_ucm_config ucm;
/* hooks for modifier action */
pa_hook_slot
*sink_input_put_hook_slot,
*source_output_put_hook_slot,
*sink_input_unlink_hook_slot,
*source_output_unlink_hook_slot;
};
struct profile_data {
@ -459,6 +466,66 @@ static void set_card_name(pa_card_new_data *data, pa_modargs *ma, const char *de
pa_xfree(t);
}
static pa_hook_result_t sink_input_put_hook_callback(pa_core *c, pa_sink_input *sink_input, struct userdata *u) {
const char *role;
pa_sink *sink = sink_input->sink;
pa_assert(sink);
role = pa_proplist_gets(sink_input->proplist, PA_PROP_MEDIA_ROLE);
/* new sink input linked to sink of this card */
if (role && sink->card == u->card)
pa_alsa_ucm_roled_stream_begin(&u->ucm, role, PA_DIRECTION_OUTPUT);
return PA_HOOK_OK;
}
static pa_hook_result_t source_output_put_hook_callback(pa_core *c, pa_source_output *source_output, struct userdata *u) {
const char *role;
pa_source *source = source_output->source;
pa_assert(source);
role = pa_proplist_gets(source_output->proplist, PA_PROP_MEDIA_ROLE);
/* new source output linked to source of this card */
if (role && source->card == u->card)
pa_alsa_ucm_roled_stream_begin(&u->ucm, role, PA_DIRECTION_INPUT);
return PA_HOOK_OK;
}
static pa_hook_result_t sink_input_unlink_hook_callback(pa_core *c, pa_sink_input *sink_input, struct userdata *u) {
const char *role;
pa_sink *sink = sink_input->sink;
pa_assert(sink);
role = pa_proplist_gets(sink_input->proplist, PA_PROP_MEDIA_ROLE);
/* new sink input unlinked from sink of this card */
if (role && sink->card == u->card)
pa_alsa_ucm_roled_stream_end(&u->ucm, role, PA_DIRECTION_OUTPUT);
return PA_HOOK_OK;
}
static pa_hook_result_t source_output_unlink_hook_callback(pa_core *c, pa_source_output *source_output, struct userdata *u) {
const char *role;
pa_source *source = source_output->source;
pa_assert(source);
role = pa_proplist_gets(source_output->proplist, PA_PROP_MEDIA_ROLE);
/* new source output unlinked from source of this card */
if (role && source->card == u->card)
pa_alsa_ucm_roled_stream_end(&u->ucm, role, PA_DIRECTION_INPUT);
return PA_HOOK_OK;
}
int pa__init(pa_module *m) {
pa_card_new_data data;
pa_modargs *ma;
@ -515,6 +582,20 @@ int pa__init(pa_module *m) {
pa_log_info("Found UCM profiles");
u->profile_set = pa_alsa_ucm_add_profile_set(&u->ucm, &u->core->default_channel_map);
/* hook start of sink input/source output to enable modifiers */
/* A little bit later than module-role-cork */
u->sink_input_put_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_INPUT_PUT], PA_HOOK_LATE+10,
(pa_hook_cb_t) sink_input_put_hook_callback, u);
u->source_output_put_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_PUT], PA_HOOK_LATE+10,
(pa_hook_cb_t) source_output_put_hook_callback, u);
/* hook end of sink input/source output to disable modifiers */
/* A little bit later than module-role-cork */
u->sink_input_unlink_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_INPUT_UNLINK], PA_HOOK_LATE+10,
(pa_hook_cb_t) sink_input_unlink_hook_callback, u);
u->source_output_unlink_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_UNLINK], PA_HOOK_LATE+10,
(pa_hook_cb_t) source_output_unlink_hook_callback, u);
}
else {
u->use_ucm = FALSE;
@ -646,6 +727,18 @@ void pa__done(pa_module*m) {
if (!(u = m->userdata))
goto finish;
if (u->sink_input_put_hook_slot)
pa_hook_slot_free(u->sink_input_put_hook_slot);
if (u->sink_input_unlink_hook_slot)
pa_hook_slot_free(u->sink_input_unlink_hook_slot);
if (u->source_output_put_hook_slot)
pa_hook_slot_free(u->source_output_put_hook_slot);
if (u->source_output_unlink_hook_slot)
pa_hook_slot_free(u->source_output_unlink_hook_slot);
if (u->mixer_fdl)
pa_alsa_fdlist_free(u->mixer_fdl);
if (u->mixer_handle)