Merge commit 'e2ceb17642f374a7df8f1f5d3d2b2446525bc7fb'

* commit 'e2ceb17642f374a7df8f1f5d3d2b2446525bc7fb':
  mpeg4videodec: move mpeg4-specific post-frame-decode code from h264dec to mpeg4videodec

Conflicts:
	libavcodec/h263dec.c
	libavcodec/mpeg4video.h
	libavcodec/mpeg4videodec.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>

1 files changed, 42 insertions, 0 deletions

diff --git a/libavcodec/mpeg4videodec.c b/libavcodec/mpeg4videodec.c
index 1155163c1e..def22f5a89 100644
--- a/libavcodec/mpeg4videodec.c
+++ b/libavcodec/mpeg4videodec.c
@@ -2624,6 +2624,48 @@ av_cold void ff_mpeg4videodec_static_init(void) {
     }
 }
 
+int ff_mpeg4_frame_end(AVCodecContext *avctx, const uint8_t *buf, int buf_size)
+{
+    Mpeg4DecContext *ctx = avctx->priv_data;
+    MpegEncContext    *s = &ctx->m;
+
+    /* divx 5.01+ bitstream reorder stuff */
+    /* Since this clobbers the input buffer and hwaccel codecs still need the
+     * data during hwaccel->end_frame we should not do this any earlier */
+    if (s->divx_packed) {
+        int current_pos     = s->gb.buffer == s->bitstream_buffer ? 0 : (get_bits_count(&s->gb) >> 3);
+        int startcode_found = 0;
+
+        if (buf_size - current_pos > 7) {
+
+            int i;
+            for (i = current_pos; i < buf_size - 4; i++)
+
+                if (buf[i]     == 0 &&
+                    buf[i + 1] == 0 &&
+                    buf[i + 2] == 1 &&
+                    buf[i + 3] == 0xB6) {
+                    startcode_found = !(buf[i + 4] & 0x40);
+                    break;
+                }
+        }
+
+        if (startcode_found) {
+            av_fast_malloc(&s->bitstream_buffer,
+                           &s->allocated_bitstream_buffer_size,
+                           buf_size - current_pos +
+                           FF_INPUT_BUFFER_PADDING_SIZE);
+            if (!s->bitstream_buffer)
+                return AVERROR(ENOMEM);
+            memcpy(s->bitstream_buffer, buf + current_pos,
+                   buf_size - current_pos);
+            s->bitstream_buffer_size = buf_size - current_pos;
+        }
+    }
+
+    return 0;
+}
+
 static int mpeg4_update_thread_context(AVCodecContext *dst,
                                        const AVCodecContext *src)
 {