[pulseaudio-discuss] [PATCH 08/11] alsa: Add device prototype support

[Tanu Kaskinen]

Each mapping corresponds to a device prototype, except some mappings
can correspond to two prototypes, because some mappings create both a
sink and a source.
---
 src/modules/alsa/alsa-mixer.c       | 13 +++++++++++++
 src/modules/alsa/alsa-mixer.h       |  2 ++
 src/modules/alsa/alsa-sink.c        |  3 +++
 src/modules/alsa/alsa-source.c      |  3 +++
 src/modules/alsa/module-alsa-card.c |  4 ++++
 5 files changed, 25 insertions(+)

diff --git a/src/modules/alsa/alsa-mixer.c b/src/modules/alsa/alsa-mixer.c
index a658981..41ba314 100644
--- a/src/modules/alsa/alsa-mixer.c
+++ b/src/modules/alsa/alsa-mixer.c
@@ -40,6 +40,7 @@
 #include <pulse/xmalloc.h>
 #include <pulse/utf8.h>
 
+#include <pulsecore/device-prototype.h>
 #include <pulsecore/i18n.h>
 #include <pulsecore/log.h>
 #include <pulsecore/macro.h>
@@ -3312,6 +3313,12 @@ static void mapping_free(pa_alsa_mapping *m) {
 
     pa_alsa_ucm_mapping_context_free(&m->ucm_context);
 
+    if (m->source_prototype)
+        pa_device_prototype_free(m->source_prototype);
+
+    if (m->sink_prototype)
+        pa_device_prototype_free(m->sink_prototype);
+
     pa_xfree(m);
 }
 
@@ -3856,6 +3863,12 @@ static int mapping_verify(pa_alsa_mapping *m, const pa_channel_map *bonus) {
             m->priority += 30;
     }
 
+    if (m->direction == PA_ALSA_DIRECTION_ANY || m->direction == PA_ALSA_DIRECTION_OUTPUT)
+        m->sink_prototype = pa_device_prototype_new();
+
+    if (m->direction == PA_ALSA_DIRECTION_ANY || m->direction == PA_ALSA_DIRECTION_INPUT)
+        m->source_prototype = pa_device_prototype_new();
+
     return 0;
 }
 
diff --git a/src/modules/alsa/alsa-mixer.h b/src/modules/alsa/alsa-mixer.h
index 995a34b..d964927 100644
--- a/src/modules/alsa/alsa-mixer.h
+++ b/src/modules/alsa/alsa-mixer.h
@@ -269,6 +269,8 @@ struct pa_alsa_mapping {
     snd_pcm_t *input_pcm;
     snd_pcm_t *output_pcm;
 
+    pa_device_prototype *sink_prototype;
+    pa_device_prototype *source_prototype;
     pa_sink *sink;
     pa_source *source;
 
diff --git a/src/modules/alsa/alsa-sink.c b/src/modules/alsa/alsa-sink.c
index 5fd8413..9445b6d 100644
--- a/src/modules/alsa/alsa-sink.c
+++ b/src/modules/alsa/alsa-sink.c
@@ -2290,6 +2290,9 @@ pa_sink *pa_alsa_sink_new(pa_module *m, pa_modargs *ma, const char*driver, pa_ca
     else if (u->mixer_path_set)
         pa_alsa_add_ports(&data, u->mixer_path_set, card);
 
+    if (mapping)
+        pa_sink_new_data_set_prototype(&data, mapping->sink_prototype);
+
     pa_node_new_data_set_fallback_name_prefix(&data.node_data, "alsa");
 
     u->sink = pa_sink_new(m->core, &data, PA_SINK_HARDWARE | PA_SINK_LATENCY | (u->use_tsched ? PA_SINK_DYNAMIC_LATENCY : 0) |
diff --git a/src/modules/alsa/alsa-source.c b/src/modules/alsa/alsa-source.c
index 432d61f..5f70cdb 100644
--- a/src/modules/alsa/alsa-source.c
+++ b/src/modules/alsa/alsa-source.c
@@ -1996,6 +1996,9 @@ pa_source *pa_alsa_source_new(pa_module *m, pa_modargs *ma, const char*driver, p
     else if (u->mixer_path_set)
         pa_alsa_add_ports(&data, u->mixer_path_set, card);
 
+    if (mapping)
+        pa_source_new_data_set_prototype(&data, mapping->source_prototype);
+
     pa_node_new_data_set_fallback_name_prefix(&data.node_data, "alsa");
 
     u->source = pa_source_new(m->core, &data, PA_SOURCE_HARDWARE|PA_SOURCE_LATENCY|(u->use_tsched ? PA_SOURCE_DYNAMIC_LATENCY : 0));
diff --git a/src/modules/alsa/module-alsa-card.c b/src/modules/alsa/module-alsa-card.c
index e6e426e..c6f29c6 100644
--- a/src/modules/alsa/module-alsa-card.c
+++ b/src/modules/alsa/module-alsa-card.c
@@ -157,6 +157,8 @@ static void add_profiles(struct userdata *u, pa_hashmap *h, pa_hashmap *ports) {
             cp->n_sinks = pa_idxset_size(ap->output_mappings);
 
             PA_IDXSET_FOREACH(m, ap->output_mappings, idx) {
+                pa_hashmap_put(cp->device_prototypes, m->sink_prototype, m->sink_prototype);
+
                 if (u->use_ucm)
                     pa_alsa_ucm_add_ports_combination(NULL, &m->ucm_context, true, ports, cp, u->core);
                 else
@@ -170,6 +172,8 @@ static void add_profiles(struct userdata *u, pa_hashmap *h, pa_hashmap *ports) {
             cp->n_sources = pa_idxset_size(ap->input_mappings);
 
             PA_IDXSET_FOREACH(m, ap->input_mappings, idx) {
+                pa_hashmap_put(cp->device_prototypes, m->source_prototype, m->source_prototype);
+
                 if (u->use_ucm)
                     pa_alsa_ucm_add_ports_combination(NULL, &m->ucm_context, false, ports, cp, u->core);
                 else
-- 
1.8.3.1