From f3b7cac4b4ea529b79ca6605a6fe8bec215568d3 Mon Sep 17 00:00:00 2001
From: Alexey Yakovenko <wakeroid@gmail.com>
Date: Sat, 26 Sep 2009 21:00:05 +0200
Subject: added replaygain peak scaling

---
 conf.c         |  4 ++++
 conf.h         |  1 +
 config-example |  5 +++++
 gtkplaylist.c  |  5 +++++
 streamer.c     | 34 ++++++++++++++++++++++++++++------
 5 files changed, 43 insertions(+), 6 deletions(-)

diff --git a/conf.c b/conf.c
index 45d62dee..017da7d0 100644
--- a/conf.c
+++ b/conf.c
@@ -28,6 +28,7 @@ int conf_hvsc_enable = 0;
 char conf_blacklist_plugins[1024]; // plugins listed in this option will not be loaded
 int conf_close_send_to_tray = 0;
 int conf_replaygain_mode = 0;
+int conf_replaygain_scale = 1;
 
 int
 conf_load (void) {
@@ -103,6 +104,9 @@ conf_load (void) {
                 fprintf (stderr, "config warning: replaygain_mode must be one of 0, 1 or 2\n");
             }
         }
+        else if (!strcasecmp (str, "replaygain_scale")) {
+            conf_replaygain_scale = atoi (value);
+        }
         else {
             fprintf (stderr, "error in config file line %d\n", line);
         }
diff --git a/conf.h b/conf.h
index dc04f8ce..683db68b 100644
--- a/conf.h
+++ b/conf.h
@@ -26,6 +26,7 @@ extern int conf_hvsc_enable;
 extern char conf_blacklist_plugins[1024];
 extern int conf_close_send_to_tray;
 extern int conf_replaygain_mode;
+extern int conf_replaygain_scale;
 
 int
 conf_load (void);
diff --git a/config-example b/config-example
index 104fe1f6..a09f41a5 100644
--- a/config-example
+++ b/config-example
@@ -48,4 +48,9 @@ src_quality 2
 # 1 track
 # 2 album (audiophile)
 # you must preprocess your collection with some external application to use that
+# foobar2000 is the best to do it so far
 replaygain_mode 0
+
+# replay gain scale
+# set to 0 if you'd like to ignore peak scale (default is 1)
+replaygain_scale 1
diff --git a/gtkplaylist.c b/gtkplaylist.c
index 6a434b83..54e6b36f 100644
--- a/gtkplaylist.c
+++ b/gtkplaylist.c
@@ -783,6 +783,11 @@ gtkpl_keypress (gtkplaylist_t *ps, int keyval, int state) {
         replaygain = 1-replaygain;
         fprintf (stderr, "replaygain=%d\n", replaygain);
     }
+    else if (keyval == GDK_t) {
+        extern int replaygain_scale;
+        replaygain_scale = 1-replaygain_scale;
+        fprintf (stderr, "replaygain_scale=%d\n", replaygain_scale);
+    }
     else if (keyval == GDK_Up && ps->row > 0) {
         ps->row--;
         if (ps->row < ps->scrollpos) {
diff --git a/streamer.c b/streamer.c
index b6753304..5e0df775 100644
--- a/streamer.c
+++ b/streamer.c
@@ -45,7 +45,7 @@ static float g_fbuffer[200000]; // hack!
 static float g_srcbuffer[200000]; // hack!
 static int streaming_terminate;
 
-#define STREAM_BUFFER_SIZE (200000*5)
+#define STREAM_BUFFER_SIZE (200000)
 static int streambuffer_fill;
 static int bytes_until_next_song = 0;
 static char streambuffer[STREAM_BUFFER_SIZE];
@@ -274,6 +274,7 @@ streamer_thread (uintptr_t ctx) {
             if (orig_playing_song) {
                 orig_playing_song->played = 1;
                 orig_playing_song->started_timestamp = time (NULL);
+                str_playing_song.started_timestamp = time (NULL);
             }
             playlist_current_ptr = orig_playing_song;
             // that is needed for playlist drawing
@@ -375,6 +376,7 @@ streamer_reset (int full) { // must be called when current song changes by exter
 }
 
 int replaygain = 1;
+int replaygain_scale = 1;
 
 static void
 apply_replay_gain_int16 (playItem_t *it, char *bytes, int size) {
@@ -386,13 +388,23 @@ apply_replay_gain_int16 (playItem_t *it, char *bytes, int size) {
         if (it->replaygain_track_gain == 0) {
             return;
         }
-        vol = db_to_amp (str_streaming_song.replaygain_track_gain) * 1000;
+        if (conf_replaygain_scale && replaygain_scale) {
+            vol = db_to_amp (str_streaming_song.replaygain_track_gain)/str_streaming_song.replaygain_track_peak * 1000;
+        }
+        else {
+            vol = db_to_amp (str_streaming_song.replaygain_track_gain) * 1000;
+        }
     }
     else if (conf_replaygain_mode == 2) {
         if (it->replaygain_album_gain == 0) {
             return;
         }
-        vol = db_to_amp (str_streaming_song.replaygain_album_gain) * 1000;
+        if (conf_replaygain_scale && replaygain_scale) {
+            vol = db_to_amp (str_streaming_song.replaygain_album_gain)/str_streaming_song.replaygain_album_peak * 1000;
+        }
+        else {
+            vol = db_to_amp (str_streaming_song.replaygain_album_gain) * 1000;
+        }
     }
     int16_t *s = (int16_t*)bytes;
     for (int j = 0; j < size/2; j++) {
@@ -413,18 +425,28 @@ apply_replay_gain_float32 (playItem_t *it, char *bytes, int size) {
     if (!replaygain || !conf_replaygain_mode) {
         return;
     }
-    float vol = 1;
+    float vol = 1.f;
     if (conf_replaygain_mode == 1) {
         if (it->replaygain_track_gain == 0) {
             return;
         }
-        vol = db_to_amp (it->replaygain_track_gain);
+        if (conf_replaygain_scale && replaygain_scale) {
+            vol = db_to_amp (it->replaygain_track_gain)/it->replaygain_track_peak;
+        }
+        else {
+            vol = db_to_amp (it->replaygain_track_gain);
+        }
     }
     else if (conf_replaygain_mode == 2) {
         if (it->replaygain_album_gain == 0) {
             return;
         }
-        vol = db_to_amp (it->replaygain_album_gain);
+        if (conf_replaygain_scale && replaygain_scale) {
+            vol = db_to_amp (it->replaygain_album_gain)/it->replaygain_album_peak;
+        }
+        else {
+            vol = db_to_amp (it->replaygain_album_gain);
+        }
     }
     float *s = (float*)bytes;
     for (int j = 0; j < size/4; j++) {
-- 
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