[FFmpeg-devel] [PATCH 8/8] asf: truncate date to year when muxing.

[Anton Khirnov]

---
 libavformat/asf.c |   17 ++++++++++++++++-
 1 files changed, 16 insertions(+), 1 deletions(-)

diff --git a/libavformat/asf.c b/libavformat/asf.c
index 8f940f5..288ccc9 100644
--- a/libavformat/asf.c
+++ b/libavformat/asf.c
@@ -132,6 +132,20 @@ const ff_asf_guid ff_asf_digital_signature = {
     0xfc, 0xb3, 0x11, 0x22, 0x23, 0xbd, 0xd2, 0x11, 0xb4, 0xb7, 0x00, 0xa0, 0xc9, 0x55, 0xfc, 0x6e
 };
 
+static void conv2native(AVMetadata **src, AVMetadata **dst)
+{
+    AVMetadataTag *t;
+    char year[5];
+
+    if (!(t = av_metadata_get(*src, "date", NULL, 0)))
+        return;
+
+    snprintf(year, sizeof(year), "%04d", atoi(t->value));
+    av_metadata_set2(dst, "WM/Year", year, 0);
+    av_metadata_set2(dst, t->key, t->value, 0);
+    av_metadata_remove(src, &t);
+}
+
 /* List of official tags at http://msdn.microsoft.com/en-us/library/dd743066(VS.85).aspx */
 static const AVMetadataConvTable asf_conv_table[] = {
     { "WM/AlbumArtist"     , "album_artist"},
@@ -149,12 +163,13 @@ static const AVMetadataConvTable asf_conv_table[] = {
     { "WM/Tool"            , "encoder"     },
     { "WM/TrackNumber"     , "track"       },
     { "WM/Track"           , "track"       },
-//  { "Year"               , "date"        }, TODO: conversion year<->date
+    { "WM/Year"            , "date"        },
     { 0 }
 };
 
 const AVMetadataConv ff_asf_metadata_conv = {
     asf_conv_table,
+    .conv2native = conv2native,
 };
 
 int ff_put_str16_nolen(ByteIOContext *s, const char *tag)
-- 
1.7.1