4 files changed, 32 insertions, 8 deletions

diff --git a/src/interface.c b/src/interface.c
index 5492fbf..f46f6dc 100644
--- a/src/interface.c
+++ b/src/interface.c
@@ -149,6 +149,8 @@ void get_input(void)
 	int c;
 //	uint32_t sink;
 	c = wgetch(menu_win);
+	int volume_mult = 0;
+
 	switch (c) {
 		case KEY_UP:
 			if (chooser_input == -1 && chooser_sink > 0) {
@@ -170,9 +172,29 @@ void get_input(void)
 			break;
 
 		case KEY_LEFT:
-			break;
-
+			volume_mult = -1;
 		case KEY_RIGHT:
+			if (volume_mult == 0)
+				volume_mult = 1;
+			if (chooser_input == -1)
+				break;
+			sink_input_info *input = sink_list[chooser_sink]->input_list[chooser_input];
+			pa_cvolume volume;
+			volume.channels = input->channels;
+
+			int input_vol = input->vol + 2 * volume_mult * (VOLUME_MAX / 100);
+#define CHECK_MIN_MAX(val, min, max) ((val) > (max) ? (max) : ((val) < (min) ? (min) : (val)))
+			pa_volume_t new_vol = CHECK_MIN_MAX(input_vol, 0, VOLUME_MAX);
+#undef CHECK_MIN_MAX
+			for (int i = 0; i < volume.channels; ++i)
+				volume.values[i] = new_vol;
+
+			pa_operation_unref(pa_context_set_sink_input_volume(context, 
+					input->index,
+					&volume,
+					change_callback,
+					NULL));
+			return;
 			break;
 
 		case 32:
diff --git a/src/pa-sink-ctl.c b/src/pa-sink-ctl.c
index 42ebc07..fce5a84 100644
--- a/src/pa-sink-ctl.c
+++ b/src/pa-sink-ctl.c
@@ -164,6 +164,7 @@ void get_sink_input_info_callback(pa_context *c, const pa_sink_input_info *i, in
 	sink_input_info* input = sink_list[sink_num]->input_list[counter];
 	input->name = strdup(pa_proplist_gets(i->proplist, "application.name"));
 	input->index = i->index;
+	input->channels = i->volume.channels;
 	input->vol = pa_cvolume_avg(&i->volume);
 
 	++(sink_list[sink_num]->input_counter);
diff --git a/src/sink_input.c b/src/sink_input.c
index 8b3eab8..a1440df 100644
--- a/src/sink_input.c
+++ b/src/sink_input.c
@@ -16,10 +16,10 @@ sink_input_info* sink_input_init(void) {
 }
 
 void sink_input_clear(sink_input_info* sink_input) {
-	
+
 	if (sink_input->name != NULL)
 		free(sink_input->name);
-	
+
 	if (sink_input->pid != NULL)
 		free(sink_input->pid);
 
@@ -33,12 +33,12 @@ sink_input_info** sink_input_list_init(int max) {
 
 	for (int i = 0; i < max; ++i)
 		sink_input_list[i] = NULL;
-	
+
 	return sink_input_list;
 }
 
 void sink_input_list_enlarge(sink_input_info*** sink_input_list, int* max, int counter) {
-	
+
 	*max *= 2;
 	*sink_input_list = (sink_input_info**) realloc(*sink_input_list, (*max) * sizeof(sink_input_info*));
 
@@ -47,7 +47,7 @@ void sink_input_list_enlarge(sink_input_info*** sink_input_list, int* max, int c
 }
 
 void sink_input_list_clear(sink_input_info** sink_input_list, int *max) {
-	
+
 	for (int i = 0; i < (*max); ++i)
 		if (sink_input_list[i] != NULL)
 			sink_input_clear(sink_input_list[i]);
@@ -59,7 +59,7 @@ void sink_input_list_clear(sink_input_info** sink_input_list, int *max) {
 }
 
 void sink_input_check(sink_input_info** sink_input) {
-	
+
 	if (sink_input == NULL)
 		printf("Error: NULL\n");
 
diff --git a/src/sink_input.h b/src/sink_input.h
index 92ff4bb..03ed476 100644
--- a/src/sink_input.h
+++ b/src/sink_input.h
@@ -10,6 +10,7 @@ typedef struct _sink_input_info {
 	uint32_t sink;
 	char *name;
 	char *pid;	// maybe useless?!!?
+	uint8_t channels;
 	pa_volume_t vol; // TOTO: exchange with the channel-list
 } sink_input_info;