Upstream version 9.38.198.0

[platform/framework/web/crosswalk.git] / src / third_party / ffmpeg / libavcodec / h261dec.c

diff --git a/src/third_party/ffmpeg/libavcodec/h261dec.c b/src/third_party/ffmpeg/libavcodec/h261dec.c
index 50bfec9..7e63f29 100644 (file)
--- a/src/third_party/ffmpeg/libavcodec/h261dec.c
+++ b/src/third_party/ffmpeg/libavcodec/h261dec.c
@@ -27,9 +27,12 @@
 
 #include "libavutil/avassert.h"
 #include "avcodec.h"
+#include "mpeg_er.h"
+#include "mpegutils.h"
 #include "mpegvideo.h"
 #include "h263.h"
 #include "h261.h"
+#include "internal.h"
 
 #define H261_MBA_VLC_BITS 9
 #define H261_MTYPE_VLC_BITS 6
@@ -125,8 +128,8 @@ static int h261_decode_gob_header(H261Context *h)
     }
 
     /* GEI */
-    while (get_bits1(&s->gb) != 0)
-        skip_bits(&s->gb, 8);
+    if (skip_1stop_8data_bits(&s->gb) < 0)
+        return AVERROR_INVALIDDATA;
 
     if (s->qscale == 0) {
         av_log(s->avctx, AV_LOG_ERROR, "qscale has forbidden 0 value\n");
@@ -430,10 +433,17 @@ static int h261_decode_mb(H261Context *h)
     s->mv[0][0][0]                 = h->current_mv_x * 2; // gets divided by 2 in motion compensation
     s->mv[0][0][1]                 = h->current_mv_y * 2;
 
+    if (s->current_picture.motion_val[0]) {
+        int b_stride = 2*s->mb_width + 1;
+        int b_xy     = 2 * s->mb_x + (2 * s->mb_y) * b_stride;
+        s->current_picture.motion_val[0][b_xy][0] = s->mv[0][0][0];
+        s->current_picture.motion_val[0][b_xy][1] = s->mv[0][0][1];
+    }
+
 intra:
     /* decode each block */
     if (s->mb_intra || HAS_CBP(h->mtype)) {
-        s->dsp.clear_blocks(s->block[0]);
+        s->bdsp.clear_blocks(s->block[0]);
         for (i = 0; i < 6; i++) {
             if (h261_decode_block(h, s->block[i], i, cbp & 32) < 0)
                 return SLICE_ERROR;
@@ -478,7 +488,6 @@ static int h261_decode_picture_header(H261Context *h)
     s->picture_number = (s->picture_number & ~31) + i;
 
     s->avctx->time_base      = (AVRational) { 1001, 30000 };
-    s->current_picture.f.pts = s->picture_number;
 
     /* PTYPE starts here */
     skip_bits1(&s->gb); /* split screen off */
@@ -506,8 +515,8 @@ static int h261_decode_picture_header(H261Context *h)
     skip_bits1(&s->gb); /* Reserved */
 
     /* PEI */
-    while (get_bits1(&s->gb) != 0)
-        skip_bits(&s->gb, 8);
+    if (skip_1stop_8data_bits(&s->gb) < 0)
+        return AVERROR_INVALIDDATA;
 
     /* H.261 has no I-frames, but if we pass AV_PICTURE_TYPE_I for the first
      * frame, the codec crashes if it does not contain all I-blocks
@@ -586,15 +595,6 @@ retry:
         if (ff_MPV_common_init(s) < 0)
             return -1;
 
-    /* We need to set current_picture_ptr before reading the header,
-     * otherwise we cannot store anything 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];
-    }
-
     ret = h261_decode_picture_header(h);
 
     /* skip if the header was thrashed */
@@ -610,14 +610,16 @@ retry:
         s->parse_context = pc;
     }
     if (!s->context_initialized) {
-        avcodec_set_dimensions(avctx, s->width, s->height);
+        ret = ff_set_dimensions(avctx, s->width, s->height);
+        if (ret < 0)
+            return ret;
 
         goto retry;
     }
 
     // for skipping the frame
-    s->current_picture.f.pict_type = s->pict_type;
-    s->current_picture.f.key_frame = s->pict_type == AV_PICTURE_TYPE_I;
+    s->current_picture.f->pict_type = s->pict_type;
+    s->current_picture.f->key_frame = s->pict_type == AV_PICTURE_TYPE_I;
 
     if ((avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type == AV_PICTURE_TYPE_B) ||
         (avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type != AV_PICTURE_TYPE_I) ||
@@ -640,10 +642,10 @@ retry:
     }
     ff_MPV_frame_end(s);
 
-    av_assert0(s->current_picture.f.pict_type == s->current_picture_ptr->f.pict_type);
-    av_assert0(s->current_picture.f.pict_type == s->pict_type);
+    av_assert0(s->current_picture.f->pict_type == s->current_picture_ptr->f->pict_type);
+    av_assert0(s->current_picture.f->pict_type == s->pict_type);
 
-    if ((ret = av_frame_ref(pict, &s->current_picture_ptr->f)) < 0)
+    if ((ret = av_frame_ref(pict, s->current_picture_ptr->f)) < 0)
         return ret;
     ff_print_debug_info(s, s->current_picture_ptr, pict);