From d6e1e744a7b3ac2eb43929b4b7b7c64e6abea89b Mon Sep 17 00:00:00 2001
From: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Date: Wed, 17 Jun 2015 15:19:47 -0400
Subject: [PATCH] cslg: Add Composition Shift Least Greatest Atom

This simply add fourcc and dump function for the cslg Atom.

https://bugzilla.gnome.org/show_bug.cgi?id=751103
---
 gst/isomp4/fourcc.h        |  1 +
 gst/isomp4/qtdemux_dump.c  | 22 ++++++++++++++++++++++
 gst/isomp4/qtdemux_dump.h  |  2 ++
 gst/isomp4/qtdemux_types.c |  1 +
 4 files changed, 26 insertions(+)

diff --git a/gst/isomp4/fourcc.h b/gst/isomp4/fourcc.h
index 774a26608a..147027bb53 100644
--- a/gst/isomp4/fourcc.h
+++ b/gst/isomp4/fourcc.h
@@ -102,6 +102,7 @@ G_BEGIN_DECLS
 #define FOURCC_crgn     GST_MAKE_FOURCC('c','r','g','n')
 #define FOURCC_ctab     GST_MAKE_FOURCC('c','t','a','b')
 #define FOURCC_ctts     GST_MAKE_FOURCC('c','t','t','s')
+#define FOURCC_cslg     GST_MAKE_FOURCC('c','s','l','g')
 #define FOURCC_dac3     GST_MAKE_FOURCC('d','a','c','3')
 #define FOURCC_data     GST_MAKE_FOURCC('d','a','t','a')
 #define FOURCC_dcom     GST_MAKE_FOURCC('d','c','o','m')
diff --git a/gst/isomp4/qtdemux_dump.c b/gst/isomp4/qtdemux_dump.c
index 132a458e7d..880bb74cbe 100644
--- a/gst/isomp4/qtdemux_dump.c
+++ b/gst/isomp4/qtdemux_dump.c
@@ -521,6 +521,28 @@ qtdemux_dump_ctts (GstQTDemux * qtdemux, GstByteReader * data, int depth)
   return TRUE;
 }
 
+gboolean
+qtdemux_dump_cslg (GstQTDemux * qtdemux, GstByteReader * data, int depth)
+{
+  guint32 ver_flags = 0, shift = 0;
+  gint32 least_offset = 0, start_time = 0, end_time = 0;
+
+  if (!gst_byte_reader_get_uint32_be (data, &ver_flags) ||
+      !gst_byte_reader_get_uint32_be (data, &shift) ||
+      !gst_byte_reader_get_int32_be (data, &least_offset) ||
+      !gst_byte_reader_get_int32_be (data, &start_time) ||
+      !gst_byte_reader_get_int32_be (data, &end_time))
+    return FALSE;
+
+  GST_LOG ("%*s  version/flags: %08x", depth, "", ver_flags);
+  GST_LOG ("%*s  shift:         %u", depth, "", shift);
+  GST_LOG ("%*s  least offset:  %d", depth, "", least_offset);
+  GST_LOG ("%*s  start time:    %d", depth, "", start_time);
+  GST_LOG ("%*s  end time:      %d", depth, "", end_time);
+
+  return TRUE;
+}
+
 gboolean
 qtdemux_dump_co64 (GstQTDemux * qtdemux, GstByteReader * data, int depth)
 {
diff --git a/gst/isomp4/qtdemux_dump.h b/gst/isomp4/qtdemux_dump.h
index 162b411aa3..4234023b40 100644
--- a/gst/isomp4/qtdemux_dump.h
+++ b/gst/isomp4/qtdemux_dump.h
@@ -61,6 +61,8 @@ gboolean qtdemux_dump_cmvd (GstQTDemux * qtdemux, GstByteReader * data,
     int depth);
 gboolean qtdemux_dump_ctts (GstQTDemux * qtdemux, GstByteReader * data,
     int depth);
+gboolean qtdemux_dump_cslg (GstQTDemux * qtdemux, GstByteReader * data,
+    int depth);
 gboolean qtdemux_dump_mfro (GstQTDemux * qtdemux, GstByteReader * data,
     int depth);
 gboolean qtdemux_dump_mfhd (GstQTDemux * qtdemux, GstByteReader * data,
diff --git a/gst/isomp4/qtdemux_types.c b/gst/isomp4/qtdemux_types.c
index 6672efed3c..ecd02f2654 100644
--- a/gst/isomp4/qtdemux_types.c
+++ b/gst/isomp4/qtdemux_types.c
@@ -146,6 +146,7 @@ static const QtNodeType qt_node_types[] = {
   {FOURCC_rdrf, "rdrf", 0,},
   {FOURCC__gen, "Custom Genre", QT_FLAG_CONTAINER,},
   {FOURCC_ctts, "Composition time to sample", 0, qtdemux_dump_ctts},
+  {FOURCC_cslg, "Composition Shift Least Greatest", 0, qtdemux_dump_cslg},
   {FOURCC_XiTh, "XiTh", 0},
   {FOURCC_XdxT, "XdxT", 0},
   {FOURCC_loci, "loci", 0},