introspect: Get format of source output

This gets the negotiated format of source outputs in
pa_context_get_source_output*(). Also prints the format and volume
in 'pactl list'.

PROTOCOL

@@ -263,9 +263,10 @@ PA_COMMAND_GET_SOURCE_INFO_LIST)
     ...
     format_info formatn
 
-Four new fields in reply from PA_COMMAND_GET_SOURCE_OUTPUT_INFO (and thus
+Five new fields in reply from PA_COMMAND_GET_SOURCE_OUTPUT_INFO (and thus
 PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST)
 
+    format_info format
     volume
     bool mute
     bool has_volume

src/pulse/introspect.c

@@ -1168,6 +1168,7 @@ static void context_get_source_output_info_callback(pa_pdispatch *pd, uint32_t c
 
             pa_zero(i);
             i.proplist = pa_proplist_new();
+            i.format = pa_format_info_new();
 
             if (pa_tagstruct_getu32(t, &i.index) < 0 ||
                 pa_tagstruct_gets(t, &i.name) < 0 ||
@@ -1185,10 +1186,12 @@ static void context_get_source_output_info_callback(pa_pdispatch *pd, uint32_t c
                 (o->context->version >= 22 && (pa_tagstruct_get_cvolume(t, &i.volume) < 0 ||
                                                pa_tagstruct_get_boolean(t, &mute) < 0 ||
                                                pa_tagstruct_get_boolean(t, &has_volume) < 0 ||
-                                               pa_tagstruct_get_boolean(t, &volume_writable) < 0))) {
+                                               pa_tagstruct_get_boolean(t, &volume_writable) < 0 ||
+                                               pa_tagstruct_get_format_info(t, i.format) < 0))) {
 
                 pa_context_fail(o->context, PA_ERR_PROTOCOL);
                 pa_proplist_free(i.proplist);
+                pa_format_info_free(i.format);
                 goto finish;
             }
 
@@ -1203,6 +1206,7 @@ static void context_get_source_output_info_callback(pa_pdispatch *pd, uint32_t c
             }
 
             pa_proplist_free(i.proplist);
+            pa_format_info_free(i.format);
         }
     }
 

src/pulse/introspect.h

@@ -561,6 +561,7 @@ typedef struct pa_source_output_info {
     int mute;                            /**< Stream muted \since 1.0 */
     int has_volume;                      /**< Stream has volume. If not set, then the meaning of this struct's volume member is unspecified. \since 1.0 */
     int volume_writable;                 /**< The volume can be set. If not set, the volume can still change even though clients can't control the volume. \since 1.0 */
+    pa_format_info *format;              /**< Stream format information. \since 1.0 */
 } pa_source_output_info;
 
 /** Callback prototype for pa_context_get_source_output_info() and friends*/

src/pulsecore/protocol-native.c

@@ -3317,6 +3317,7 @@ static void source_output_fill_tagstruct(pa_native_connection *c, pa_tagstruct *
         pa_tagstruct_put_boolean(t, pa_source_output_get_mute(s));
         pa_tagstruct_put_boolean(t, has_volume);
         pa_tagstruct_put_boolean(t, s->volume_writable);
+        pa_tagstruct_put_format_info(t, s->format);
     }
 }
 

src/utils/pactl.c

@@ -639,7 +639,7 @@ static void get_sink_input_info_callback(pa_context *c, const pa_sink_input_info
 }
 
 static void get_source_output_info_callback(pa_context *c, const pa_source_output_info *i, int is_last, void *userdata) {
-    char t[32], k[32], s[PA_SAMPLE_SPEC_SNPRINT_MAX], cm[PA_CHANNEL_MAP_SNPRINT_MAX];
+    char t[32], k[32], s[PA_SAMPLE_SPEC_SNPRINT_MAX], cv[PA_CVOLUME_SNPRINT_MAX], cvdb[PA_SW_CVOLUME_SNPRINT_DB_MAX], cm[PA_CHANNEL_MAP_SNPRINT_MAX], f[PA_FORMAT_INFO_SNPRINT_MAX];
     char *pl;
 
     if (is_last < 0) {
@@ -680,6 +680,11 @@ static void get_source_output_info_callback(pa_context *c, const pa_source_outpu
              "\tSource: %u\n"
              "\tSample Specification: %s\n"
              "\tChannel Map: %s\n"
+             "\tFormat: %s\n"
+             "\tMute: %s\n"
+             "\tVolume: %s\n"
+             "\t        %s\n"
+             "\t        balance %0.2f\n"
              "\tBuffer Latency: %0.0f usec\n"
              "\tSource Latency: %0.0f usec\n"
              "\tResample method: %s\n"
@@ -691,6 +696,11 @@ static void get_source_output_info_callback(pa_context *c, const pa_source_outpu
            i->source,
            pa_sample_spec_snprint(s, sizeof(s), &i->sample_spec),
            pa_channel_map_snprint(cm, sizeof(cm), &i->channel_map),
+           pa_format_info_snprint(f, sizeof(f), i->format),
+           pa_yes_no(i->mute),
+           pa_cvolume_snprint(cv, sizeof(cv), &i->volume),
+           pa_sw_cvolume_snprint_dB(cvdb, sizeof(cvdb), &i->volume),
+           pa_cvolume_get_balance(&i->volume, &i->channel_map),
            (double) i->buffer_usec,
            (double) i->source_usec,
            i->resample_method ? i->resample_method : _("n/a"),