From 5a7e35dd2351c30bab45177b9482cb8833a0ca78 Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Wed, 19 Feb 2014 15:29:06 +0100
Subject: Add replaygain side data type and code for parsing replaygain tags.

---
 libavutil/Makefile     |  1 +
 libavutil/frame.h      |  4 ++++
 libavutil/replaygain.h | 51 ++++++++++++++++++++++++++++++++++++++++++++++++++
 libavutil/version.h    |  2 +-
 4 files changed, 57 insertions(+), 1 deletion(-)
 create mode 100644 libavutil/replaygain.h

(limited to 'libavutil')

diff --git a/libavutil/Makefile b/libavutil/Makefile
index 5869e67661..d5c1636840 100644
--- a/libavutil/Makefile
+++ b/libavutil/Makefile
@@ -39,6 +39,7 @@ HEADERS = adler32.h                                                     \
           pixdesc.h                                                     \
           pixfmt.h                                                      \
           random_seed.h                                                 \
+          replaygain.h                                                  \
           rational.h                                                    \
           samplefmt.h                                                   \
           sha.h                                                         \
diff --git a/libavutil/frame.h b/libavutil/frame.h
index 6b168e2cb9..e9bc6aeb40 100644
--- a/libavutil/frame.h
+++ b/libavutil/frame.h
@@ -69,6 +69,10 @@ enum AVFrameSideDataType {
      * The data is the AVDownmixInfo struct defined in libavutil/downmix_info.h.
      */
     AV_FRAME_DATA_DOWNMIX_INFO,
+    /**
+     * ReplayGain information in the form of the AVReplayGain struct.
+     */
+    AV_FRAME_DATA_REPLAYGAIN,
 };
 
 typedef struct AVFrameSideData {
diff --git a/libavutil/replaygain.h b/libavutil/replaygain.h
new file mode 100644
index 0000000000..8447703fbf
--- /dev/null
+++ b/libavutil/replaygain.h
@@ -0,0 +1,51 @@
+/*
+ *
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_REPLAYGAIN_H
+#define AVUTIL_REPLAYGAIN_H
+
+#include <stdint.h>
+
+/**
+ * ReplayGain information (see
+ * http://wiki.hydrogenaudio.org/index.php?title=ReplayGain_1.0_specification).
+ * The size of this struct is a part of the public ABI.
+ */
+typedef struct AVReplayGain {
+    /**
+     * Track replay gain in microbels (divide by 100000 to get the value in dB).
+     * Should be set to INT32_MIN when unknown.
+     */
+    int32_t track_gain;
+    /**
+     * Peak track amplitude, with UINT32_MAX representing full scale. 0 when
+     * unknown.
+     */
+    uint32_t track_peak;
+    /**
+     * Same as track_gain, but for the whole album.
+     */
+    int32_t album_gain;
+    /**
+     * Same as track_peak, but for the whole album,
+     */
+    uint32_t album_peak;
+} AVReplayGain;
+
+#endif /* AVUTIL_REPLAYGAIN_H */
diff --git a/libavutil/version.h b/libavutil/version.h
index 36070b251a..d680979629 100644
--- a/libavutil/version.h
+++ b/libavutil/version.h
@@ -54,7 +54,7 @@
  */
 
 #define LIBAVUTIL_VERSION_MAJOR 53
-#define LIBAVUTIL_VERSION_MINOR  6
+#define LIBAVUTIL_VERSION_MINOR  7
 #define LIBAVUTIL_VERSION_MICRO  0
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
-- 
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