[SCM] libav/experimental: add FF_API_LAVF_UNUSED define to disable the unused struct fields

[siretart at users.alioth.debian.org]

The following commit has been merged in the experimental branch:
commit d1742ff779bc2d24ccb0d068120705dc78ac184e
Author: Aurelien Jacobs <aurel at gnuage.org>
Date:   Fri Oct 15 14:12:25 2010 +0000

    add FF_API_LAVF_UNUSED define to disable the unused struct fields
    
    Originally committed as revision 25487 to svn://svn.ffmpeg.org/ffmpeg/trunk

diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index 4bc8461..4e3812b 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -72,6 +72,9 @@
 #ifndef FF_API_READ_SEEK
 #define FF_API_READ_SEEK               (LIBAVFORMAT_VERSION_MAJOR < 54)
 #endif
+#ifndef FF_API_LAVF_UNUSED
+#define FF_API_LAVF_UNUSED             (LIBAVFORMAT_VERSION_MAJOR < 53)
+#endif
 
 /**
  * I return the LIBAVFORMAT_VERSION_INT constant.  You got
@@ -574,7 +577,7 @@ typedef struct AVStream {
 
     int64_t nb_frames;                 ///< number of frames in this stream if known or 0
 
-#if LIBAVFORMAT_VERSION_INT < (53<<16)
+#if FF_API_LAVF_UNUSED
     attribute_deprecated int64_t unused[4+1];
 #endif
 
@@ -759,7 +762,7 @@ typedef struct AVFormatContext {
 
     /* av_read_frame() support */
     AVStream *cur_st;
-#if LIBAVFORMAT_VERSION_INT < (53<<16)
+#if FF_API_LAVF_UNUSED
     const uint8_t *cur_ptr_deprecated;
     int cur_len_deprecated;
     AVPacket cur_pkt_deprecated;

-- 
Libav/FFmpeg packaging