lavc: deprecate unused FF_BUG_OLD_MSMPEG4

libavcodec/avcodec.h

@@ -2251,7 +2251,9 @@ typedef struct AVCodecContext {
      */
     int workaround_bugs;
 #define FF_BUG_AUTODETECT       1  ///< autodetection
+#if FF_API_OLD_MSMPEG4
 #define FF_BUG_OLD_MSMPEG4      2
+#endif
 #define FF_BUG_XVID_ILACE       4
 #define FF_BUG_UMP4             8
 #define FF_BUG_NO_PADDING       16

libavcodec/options_table.h

@@ -118,7 +118,9 @@ static const AVOption avcodec_options[] = {
 {"codec_tag", NULL, OFFSET(codec_tag), AV_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
 {"bug", "work around not autodetected encoder bugs", OFFSET(workaround_bugs), AV_OPT_TYPE_FLAGS, {.i64 = FF_BUG_AUTODETECT }, INT_MIN, INT_MAX, V|D, "bug"},
 {"autodetect", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_BUG_AUTODETECT }, INT_MIN, INT_MAX, V|D, "bug"},
+#if FF_API_OLD_MSMPEG4
 {"old_msmpeg4", "some old lavc-generated MSMPEG4v3 files (no autodetection)", 0, AV_OPT_TYPE_CONST, {.i64 = FF_BUG_OLD_MSMPEG4 }, INT_MIN, INT_MAX, V|D, "bug"},
+#endif
 {"xvid_ilace", "Xvid interlacing bug (autodetected if FOURCC == XVIX)", 0, AV_OPT_TYPE_CONST, {.i64 = FF_BUG_XVID_ILACE }, INT_MIN, INT_MAX, V|D, "bug"},
 {"ump4", "(autodetected if FOURCC == UMP4)", 0, AV_OPT_TYPE_CONST, {.i64 = FF_BUG_UMP4 }, INT_MIN, INT_MAX, V|D, "bug"},
 {"no_padding", "padding bug (autodetected)", 0, AV_OPT_TYPE_CONST, {.i64 = FF_BUG_NO_PADDING }, INT_MIN, INT_MAX, V|D, "bug"},

libavcodec/version.h

@@ -82,5 +82,8 @@
 #ifndef FF_API_AC_VLC
 #define FF_API_AC_VLC            (LIBAVCODEC_VERSION_MAJOR < 56)
 #endif
+#ifndef FF_API_OLD_MSMPEG4
+#define FF_API_OLD_MSMPEG4       (LIBAVCODEC_VERSION_MAJOR < 56)
+#endif
 
 #endif /* AVCODEC_VERSION_H */