rework logic how alsa sinks/sources/cards are named

src/modules/alsa/alsa-sink.c

@@ -1209,6 +1209,32 @@ finish:
     pa_log_debug("Thread shutting down");
 }
 
+static void set_sink_name(pa_sink_new_data *data, pa_modargs *ma, const char *device_id, const char *device_name) {
+    const char *n;
+    char *t;
+
+    pa_assert(data);
+    pa_assert(ma);
+    pa_assert(device_name);
+
+    if ((n = pa_modargs_get_value(ma, "sink_name", NULL))) {
+        pa_sink_new_data_set_name(data, n);
+        data->namereg_fail = TRUE;
+        return;
+    }
+
+    if ((n = pa_modargs_get_value(ma, "name", NULL)))
+        data->namereg_fail = TRUE;
+    else {
+        n = device_id ? device_id : device_name;
+        data->namereg_fail = FALSE;
+    }
+
+    t = pa_sprintf_malloc("alsa_output.%s", n);
+    pa_sink_new_data_set_name(data, t);
+    pa_xfree(t);
+}
+
 pa_sink *pa_alsa_sink_new(pa_module *m, pa_modargs *ma, const char*driver, pa_card *card, const pa_alsa_profile_info *profile) {
 
     struct userdata *u = NULL;
@@ -1220,9 +1246,6 @@ pa_sink *pa_alsa_sink_new(pa_module *m, pa_modargs *ma, const char*driver, pa_ca
     size_t frame_size;
     snd_pcm_info_t *pcm_info = NULL;
     int err;
-    const char *name;
-    char *name_buf = NULL;
-    pa_bool_t namereg_fail;
     pa_bool_t use_mmap = TRUE, b, use_tsched = TRUE, d;
     pa_usec_t usec;
     pa_sink_new_data data;
@@ -1404,22 +1427,11 @@ pa_sink *pa_alsa_sink_new(pa_module *m, pa_modargs *ma, const char*driver, pa_ca
         }
     }
 
-    if ((name = pa_modargs_get_value(ma, "sink_name", NULL)))
-        namereg_fail = TRUE;
-    else if ((name = pa_modargs_get_value(ma, "name", NULL))) {
-        name = name_buf = pa_sprintf_malloc("alsa_output.%s", name);
-        namereg_fail = TRUE;
-    } else {
-        name = name_buf = pa_sprintf_malloc("alsa_output.%s", u->device_name);
-        namereg_fail = FALSE;
-    }
-
     pa_sink_new_data_init(&data);
     data.driver = driver;
     data.module = m;
     data.card = card;
-    pa_sink_new_data_set_name(&data, name);
-    data.namereg_fail = namereg_fail;
+    set_sink_name(&data, ma, dev_id, u->device_name);
     pa_sink_new_data_set_sample_spec(&data, &ss);
     pa_sink_new_data_set_channel_map(&data, &map);
 
@@ -1436,7 +1448,6 @@ pa_sink *pa_alsa_sink_new(pa_module *m, pa_modargs *ma, const char*driver, pa_ca
 
     u->sink = pa_sink_new(m->core, &data, PA_SINK_HARDWARE|PA_SINK_LATENCY);
     pa_sink_new_data_done(&data);
-    pa_xfree(name_buf);
 
     if (!u->sink) {
         pa_log("Failed to create sink object");

src/modules/alsa/alsa-source.c

@@ -1044,6 +1044,32 @@ finish:
     pa_log_debug("Thread shutting down");
 }
 
+static void set_source_name(pa_source_new_data *data, pa_modargs *ma, const char *device_id, const char *device_name) {
+    const char *n;
+    char *t;
+
+    pa_assert(data);
+    pa_assert(ma);
+    pa_assert(device_name);
+
+    if ((n = pa_modargs_get_value(ma, "source_name", NULL))) {
+        pa_source_new_data_set_name(data, n);
+        data->namereg_fail = TRUE;
+        return;
+    }
+
+    if ((n = pa_modargs_get_value(ma, "name", NULL)))
+        data->namereg_fail = TRUE;
+    else {
+        n = device_id ? device_id : device_name;
+        data->namereg_fail = FALSE;
+    }
+
+    t = pa_sprintf_malloc("alsa_input.%s", n);
+    pa_source_new_data_set_name(data, t);
+    pa_xfree(t);
+}
+
 pa_source *pa_alsa_source_new(pa_module *m, pa_modargs *ma, const char*driver, pa_card *card, const pa_alsa_profile_info *profile) {
 
     struct userdata *u = NULL;
@@ -1055,9 +1081,6 @@ pa_source *pa_alsa_source_new(pa_module *m, pa_modargs *ma, const char*driver, p
     size_t frame_size;
     snd_pcm_info_t *pcm_info = NULL;
     int err;
-    const char *name;
-    char *name_buf = NULL;
-    pa_bool_t namereg_fail;
     pa_bool_t use_mmap = TRUE, b, use_tsched = TRUE, d;
     pa_source_new_data data;
 
@@ -1229,22 +1252,11 @@ pa_source *pa_alsa_source_new(pa_module *m, pa_modargs *ma, const char*driver, p
         }
     }
 
-    if ((name = pa_modargs_get_value(ma, "source_name", NULL)))
-        namereg_fail = TRUE;
-    else if ((name = pa_modargs_get_value(ma, "name", NULL))) {
-        name = name_buf = pa_sprintf_malloc("alsa_input.%s", name);
-        namereg_fail = TRUE;
-    } else {
-        name = name_buf = pa_sprintf_malloc("alsa_input.%s", u->device_name);
-        namereg_fail = FALSE;
-    }
-
     pa_source_new_data_init(&data);
     data.driver = driver;
     data.module = m;
     data.card = card;
-    pa_source_new_data_set_name(&data, name);
-    data.namereg_fail = namereg_fail;
+    set_source_name(&data, ma, dev_id, u->device_name);
     pa_source_new_data_set_sample_spec(&data, &ss);
     pa_source_new_data_set_channel_map(&data, &map);
 
@@ -1261,7 +1273,6 @@ pa_source *pa_alsa_source_new(pa_module *m, pa_modargs *ma, const char*driver, p
 
     u->source = pa_source_new(m->core, &data, PA_SOURCE_HARDWARE|PA_SOURCE_LATENCY);
     pa_source_new_data_done(&data);
-    pa_xfree(name_buf);
 
     if (!u->source) {
         pa_log("Failed to create source object");

src/modules/alsa/module-alsa-card.c

@@ -37,7 +37,10 @@ PA_MODULE_DESCRIPTION("ALSA Card");
 PA_MODULE_VERSION(PACKAGE_VERSION);
 PA_MODULE_LOAD_ONCE(FALSE);
 PA_MODULE_USAGE(
-        "name=<name for the sink/source> "
+        "name=<name for the card/sink/source, to be prefixed> "
+        "card_name=<name for card> "
+        "sink_name=<name for sink> "
+        "source_name=<name for source> "
         "device_id=<ALSA card index> "
         "format=<sample format> "
         "rate=<sample rate> "
@@ -51,6 +54,9 @@ PA_MODULE_USAGE(
 
 static const char* const valid_modargs[] = {
     "name",
+    "card_name",
+    "sink_name",
+    "source_name",
     "device_id",
     "format",
     "rate",
@@ -189,6 +195,32 @@ static void init_profile(struct userdata *u) {
         u->source = pa_alsa_source_new(u->module, u->modargs, __FILE__, u->card, d->source_profile);
 }
 
+static void set_card_name(pa_card_new_data *data, pa_modargs *ma, const char *device_id) {
+    char *t;
+    const char *n;
+
+    pa_assert(data);
+    pa_assert(ma);
+    pa_assert(device_id);
+
+    if ((n = pa_modargs_get_value(ma, "card_name", NULL))) {
+        pa_card_new_data_set_name(data, n);
+        data->namereg_fail = TRUE;
+        return;
+    }
+
+    if ((n = pa_modargs_get_value(ma, "name", NULL)))
+        data->namereg_fail = TRUE;
+    else {
+        n = device_id;
+        data->namereg_fail = FALSE;
+    }
+
+    t = pa_sprintf_malloc("alsa_card.%s", n);
+    pa_card_new_data_set_name(data, t);
+    pa_xfree(t);
+}
+
 int pa__init(pa_module*m) {
     pa_card_new_data data;
     pa_modargs *ma;
@@ -224,7 +256,7 @@ int pa__init(pa_module*m) {
     data.module = m;
     pa_alsa_init_proplist_card(data.proplist, alsa_card_index);
     pa_proplist_sets(data.proplist, PA_PROP_DEVICE_STRING, u->device_id);
-    pa_card_new_data_set_name(&data, pa_modargs_get_value(ma, "name", u->device_id));
+    set_card_name(&data, ma, u->device_id);
 
     data.profiles = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
     if (pa_alsa_probe_profiles(u->device_id, &m->core->default_sample_spec, enumerate_cb, data.profiles) < 0) {

src/modules/alsa/module-alsa-sink.c

@@ -38,6 +38,7 @@ PA_MODULE_DESCRIPTION("ALSA Sink");
 PA_MODULE_VERSION(PACKAGE_VERSION);
 PA_MODULE_LOAD_ONCE(FALSE);
 PA_MODULE_USAGE(
+        "name=<name of the sink, to be prefixed> "
         "sink_name=<name for the sink> "
         "device=<ALSA device> "
         "device_id=<ALSA card index> "
@@ -53,6 +54,7 @@ PA_MODULE_USAGE(
         "tsched_buffer_watermark=<lower fill watermark>");
 
 static const char* const valid_modargs[] = {
+    "name",
     "sink_name",
     "device",
     "device_id",

src/modules/alsa/module-alsa-source.c

@@ -62,6 +62,7 @@ PA_MODULE_DESCRIPTION("ALSA Source");
 PA_MODULE_VERSION(PACKAGE_VERSION);
 PA_MODULE_LOAD_ONCE(FALSE);
 PA_MODULE_USAGE(
+        "name=<name for the source, to be prefixed> "
         "source_name=<name for the source> "
         "device=<ALSA device> "
         "device_id=<ALSA card index> "
@@ -77,6 +78,7 @@ PA_MODULE_USAGE(
         "tsched_buffer_watermark=<upper fill watermark>");
 
 static const char* const valid_modargs[] = {
+    "name",
     "source_name",
     "device",
     "device_id",