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-rw-r--r--contrib/ffmpeg/A05-mpeg4-initialization.patch41
1 files changed, 41 insertions, 0 deletions
diff --git a/contrib/ffmpeg/A05-mpeg4-initialization.patch b/contrib/ffmpeg/A05-mpeg4-initialization.patch
new file mode 100644
index 000000000..3045c8d28
--- /dev/null
+++ b/contrib/ffmpeg/A05-mpeg4-initialization.patch
@@ -0,0 +1,41 @@
+diff --git a/libavcodec/h263dec.c b/libavcodec/h263dec.c
+index f6c79af..70522ee 100644
+--- a/libavcodec/h263dec.c
++++ b/libavcodec/h263dec.c
+@@ -414,17 +414,7 @@ int ff_h263_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
+
+ if (!s->context_initialized)
+ // we need the idct permutaton for reading a custom matrix
+- if ((ret = ff_MPV_common_init(s)) < 0)
+- return ret;
+-
+- /* We need to set current_picture_ptr before reading the header,
+- * otherwise we cannot store anyting in there */
+- if (s->current_picture_ptr == NULL || s->current_picture_ptr->f.data[0]) {
+- int i = ff_find_unused_picture(s, 0);
+- if (i < 0)
+- return i;
+- s->current_picture_ptr = &s->picture[i];
+- }
++ ff_dsputil_init(&s->dsp, avctx);
+
+ /* let's go :-) */
+ if (CONFIG_WMV2_DECODER && s->msmpeg4_version == 5) {
+@@ -459,6 +449,17 @@ int ff_h263_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
+ return ret;
+ }
+
++ if (!s->context_initialized)
++ if ((ret = ff_MPV_common_init(s)) < 0)
++ return ret;
++
++ if (s->current_picture_ptr == NULL || s->current_picture_ptr->f.data[0]) {
++ int i = ff_find_unused_picture(s, 0);
++ if (i < 0)
++ return i;
++ s->current_picture_ptr = &s->picture[i];
++ }
++
+ avctx->has_b_frames = !s->low_delay;
+
+ #define SET_QPEL_FUNC(postfix1, postfix2) \