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-rw-r--r--src/replay_gain.c95
1 files changed, 79 insertions, 16 deletions
diff --git a/src/replay_gain.c b/src/replay_gain.c
index bcb501e54..020671c8a 100644
--- a/src/replay_gain.c
+++ b/src/replay_gain.c
@@ -24,8 +24,11 @@
#include "conf.h"
#include "audio_format.h"
#include "pcm_volume.h"
+#include "idle.h"
#include <glib.h>
+
+#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
@@ -38,19 +41,51 @@ static const char *const replay_gain_mode_names[] = {
enum replay_gain_mode replay_gain_mode = REPLAY_GAIN_OFF;
static float replay_gain_preamp = 1.0;
+static float replay_gain_missing_preamp = 1.0;
-void replay_gain_global_init(void)
+const char *
+replay_gain_get_mode_string(void)
{
- const struct config_param *param = config_get_param(CONF_REPLAYGAIN);
+ switch (replay_gain_mode) {
+ case REPLAY_GAIN_OFF:
+ return "off";
- if (!param)
- return;
+ case REPLAY_GAIN_TRACK:
+ return "track";
+
+ case REPLAY_GAIN_ALBUM:
+ return "album";
+ }
+
+ /* unreachable */
+ assert(false);
+ return "off";
+}
+
+bool
+replay_gain_set_mode_string(const char *p)
+{
+ assert(p != NULL);
- if (strcmp(param->value, "track") == 0) {
+ if (strcmp(p, "off") == 0)
+ replay_gain_mode = REPLAY_GAIN_OFF;
+ else if (strcmp(p, "track") == 0)
replay_gain_mode = REPLAY_GAIN_TRACK;
- } else if (strcmp(param->value, "album") == 0) {
+ else if (strcmp(p, "album") == 0)
replay_gain_mode = REPLAY_GAIN_ALBUM;
- } else {
+ else
+ return false;
+
+ idle_add(IDLE_OPTIONS);
+
+ return true;
+}
+
+void replay_gain_global_init(void)
+{
+ const struct config_param *param = config_get_param(CONF_REPLAYGAIN);
+
+ if (param != NULL && !replay_gain_set_mode_string(param->value)) {
g_error("replaygain value \"%s\" at line %i is invalid\n",
param->value, param->line);
}
@@ -73,6 +108,25 @@ void replay_gain_global_init(void)
replay_gain_preamp = pow(10, f / 20.0);
}
+
+ param = config_get_param(CONF_REPLAYGAIN_MISSING_PREAMP);
+
+ if (param) {
+ char *test;
+ float f = strtod(param->value, &test);
+
+ if (*test != '\0') {
+ g_error("Replaygain missing preamp \"%s\" is not a number at "
+ "line %i\n", param->value, param->line);
+ }
+
+ if (f < -15 || f > 15) {
+ g_error("Replaygain missing preamp \"%s\" is not between -15 and"
+ "15 at line %i\n", param->value, param->line);
+ }
+
+ replay_gain_missing_preamp = pow(10, f / 20.0);
+ }
}
static float calc_replay_gain_scale(float gain, float peak)
@@ -116,19 +170,28 @@ void
replay_gain_apply(struct replay_gain_info *info, char *buffer, int size,
const struct audio_format *format)
{
- if (replay_gain_mode == REPLAY_GAIN_OFF || !info)
+ float scale;
+
+ if (replay_gain_mode == REPLAY_GAIN_OFF)
return;
- if (info->scale < 0) {
- const struct replay_gain_tuple *tuple =
- &info->tuples[replay_gain_mode];
+ if (info) {
+ if (info->scale < 0) {
+ const struct replay_gain_tuple *tuple =
+ &info->tuples[replay_gain_mode];
- g_debug("computing ReplayGain %s scale with gain %f, peak %f\n",
- replay_gain_mode_names[replay_gain_mode],
- tuple->gain, tuple->peak);
+ g_debug("computing ReplayGain %s scale with gain %f, peak %f\n",
+ replay_gain_mode_names[replay_gain_mode],
+ tuple->gain, tuple->peak);
- info->scale = calc_replay_gain_scale(tuple->gain, tuple->peak);
+ info->scale = calc_replay_gain_scale(tuple->gain, tuple->peak);
+ }
+ scale = info->scale;
+ }
+ else {
+ scale = replay_gain_missing_preamp;
+ g_debug("ReplayGain is missing, computing scale %f\n", scale);
}
- pcm_volume(buffer, size, format, pcm_float_to_volume(info->scale));
+ pcm_volume(buffer, size, format, pcm_float_to_volume(scale));
}