volume, mixer: removed the "relative" parameter

Since the "volume" command has been removed, nobody uses relative
volumes anymore.

src/command.c

@@ -1061,7 +1061,7 @@ handle_setvol(struct client *client, G_GNUC_UNUSED int argc, char *argv[])
 	if (!check_int(client, &level, argv[1], need_integer))
 		return COMMAND_RETURN_ERROR;
 
-	success = volume_level_change(level, 0);
+	success = volume_level_change(level);
 	if (!success) {
 		command_error(client, ACK_ERROR_SYSTEM,
 			      "problems setting volume");

src/mixer_all.c

@@ -70,7 +70,7 @@ mixer_all_get_volume(void)
 }
 
 static bool
-output_mixer_set_volume(unsigned i, int volume, bool relative)
+output_mixer_set_volume(unsigned i, int volume)
 {
 	struct audio_output *output;
 	struct mixer *mixer;
@@ -85,14 +85,6 @@ output_mixer_set_volume(unsigned i, int volume, bool relative)
 	if (mixer == NULL)
 		return false;
 
-	if (relative) {
-		int prev = mixer_get_volume(mixer);
-		if (prev < 0)
-			return false;
-
-		volume += prev;
-	}
-
 	if (volume > 100)
 		volume = 100;
 	else if (volume < 0)
@@ -102,13 +94,13 @@ output_mixer_set_volume(unsigned i, int volume, bool relative)
 }
 
 bool
-mixer_all_set_volume(int volume, bool relative)
+mixer_all_set_volume(int volume)
 {
 	bool success = false;
 	unsigned count = audio_output_count();
 
 	for (unsigned i = 0; i < count; i++)
-		success = output_mixer_set_volume(i, volume, relative)
+		success = output_mixer_set_volume(i, volume)
 			|| success;
 
 	return success;

src/mixer_all.h

@@ -37,11 +37,10 @@ mixer_all_get_volume(void);
 /**
  * Sets the volume on all available mixers.
  *
- * @param volume the volume (range 0..100 or -100..100 if #relative)
- * @param relative if true, then the #volume is added to the current value
+ * @param volume the volume (range 0..100)
  * @return true on success, false on failure
  */
 bool
-mixer_all_set_volume(int volume, bool relative);
+mixer_all_set_volume(int volume);
 
 #endif

src/volume.c

@@ -117,51 +117,45 @@ int volume_level_get(void)
 	return -1;
 }
 
-static bool software_volume_change(int change, bool rel)
+static bool software_volume_change(int volume)
 {
-	int new = change;
+	if (volume > 100)
+		volume = 100;
+	else if (volume < 0)
+		volume = 0;
 
-	if (rel)
-		new += volume_software_set;
+	volume_software_set = volume;
 
-	if (new > 100)
-		new = 100;
-	else if (new < 0)
-		new = 0;
-
-	volume_software_set = new;
-
-	/*new = 100.0*(exp(new/50.0)-1)/(M_E*M_E-1)+0.5; */
-	if (new >= 100)
-		new = PCM_VOLUME_1;
-	else if (new <= 0)
-		new = 0;
+	if (volume >= 100)
+		volume = PCM_VOLUME_1;
+	else if (volume <= 0)
+		volume = 0;
 	else
-		new = pcm_float_to_volume((exp(new / 25.0) - 1) /
-					  (54.5981500331F - 1));
+		volume = pcm_float_to_volume((exp(volume / 25.0) - 1) /
+					     (54.5981500331F - 1));
 
-	setPlayerSoftwareVolume(new);
+	setPlayerSoftwareVolume(volume);
 
 	return true;
 }
 
-static bool hardware_volume_change(int change, bool rel)
+static bool hardware_volume_change(int volume)
 {
 	/* reset the cache */
 	last_hardware_volume = -1;
 
-	return mixer_all_set_volume(change, rel);
+	return mixer_all_set_volume(volume);
 }
 
-bool volume_level_change(int change, bool rel)
+bool volume_level_change(int volume)
 {
 	idle_add(IDLE_MIXER);
 
 	switch (volume_mixer_type) {
 	case MIXER_TYPE_HARDWARE:
-		return hardware_volume_change(change, rel);
+		return hardware_volume_change(volume);
 	case MIXER_TYPE_SOFTWARE:
-		return software_volume_change(change, rel);
+		return software_volume_change(volume);
 	default:
 		return true;
 	}
@@ -182,7 +176,7 @@ void read_sw_volume_state(FILE *fp)
 		g_strchomp(buf);
 		sv = strtol(buf + strlen(SW_VOLUME_STATE), &end, 10);
 		if (G_LIKELY(!*end))
-			software_volume_change(sv, 0);
+			software_volume_change(sv);
 		else
 			g_warning("Can't parse software volume: %s\n", buf);
 		return;

src/volume.h

@@ -29,7 +29,7 @@ void volume_finish(void);
 
 int volume_level_get(void);
 
-bool volume_level_change(int change, bool rel);
+bool volume_level_change(int volume);
 
 void read_sw_volume_state(FILE *fp);