Upstream version 10.39.225.0

[platform/framework/web/crosswalk.git] / src / third_party / ffmpeg / libavcodec / vc1dec.c

diff --git a/src/third_party/ffmpeg/libavcodec/vc1dec.c b/src/third_party/ffmpeg/libavcodec/vc1dec.c
index 06deb7f..a25c3d9 100644 (file)
--- a/src/third_party/ffmpeg/libavcodec/vc1dec.c
+++ b/src/third_party/ffmpeg/libavcodec/vc1dec.c
@@ -5484,7 +5484,7 @@ static int vc1_decode_sprites(VC1Context *v, GetBitContext* gb)
     if (ret < 0)
         return ret;
 
-    if (!s->current_picture.f->data[0]) {
+    if (!s->current_picture.f || !s->current_picture.f->data[0]) {
         av_log(avctx, AV_LOG_ERROR, "Got no sprites\n");
         return -1;
     }
@@ -5514,7 +5514,7 @@ static void vc1_sprite_flush(AVCodecContext *avctx)
        Since we can't enforce it, clear to black the missing sprite. This is
        wrong but it looks better than doing nothing. */
 
-    if (f->data[0])
+    if (f && f->data[0])
         for (plane = 0; plane < (s->flags&CODEC_FLAG_GRAY ? 1 : 3); plane++)
             for (i = 0; i < v->sprite_height>>!!plane; i++)
                 memset(f->data[plane] + i * f->linesize[plane],
@@ -5777,7 +5777,7 @@ av_cold int ff_vc1_decode_end(AVCodecContext *avctx)
         av_freep(&v->sr_rows[i >> 1][i & 1]);
     av_freep(&v->hrd_rate);
     av_freep(&v->hrd_buffer);
-    ff_MPV_common_end(&v->s);
+    ff_mpv_common_end(&v->s);
     av_freep(&v->mv_type_mb_plane);
     av_freep(&v->direct_mb_plane);
     av_freep(&v->forward_mb_plane);
@@ -5976,7 +5976,7 @@ static int vc1_decode_frame(AVCodecContext *avctx, void *data,
         if (ff_msmpeg4_decode_init(avctx) < 0)
             goto err;
         if (ff_vc1_decode_init_alloc_tables(v) < 0) {
-            ff_MPV_common_end(s);
+            ff_mpv_common_end(s);
             goto err;
         }
 
@@ -6023,7 +6023,7 @@ static int vc1_decode_frame(AVCodecContext *avctx, void *data,
     s->current_picture.f->key_frame = s->pict_type == AV_PICTURE_TYPE_I;
 
     /* skip B-frames if we don't have reference frames */
-    if (s->last_picture_ptr == NULL && (s->pict_type == AV_PICTURE_TYPE_B || s->droppable)) {
+    if (!s->last_picture_ptr && (s->pict_type == AV_PICTURE_TYPE_B || s->droppable)) {
         av_log(v->s.avctx, AV_LOG_DEBUG, "Skipping B frame without reference frames\n");
         goto end;
     }
@@ -6040,7 +6040,7 @@ static int vc1_decode_frame(AVCodecContext *avctx, void *data,
             s->next_p_frame_damaged = 0;
     }
 
-    if (ff_MPV_frame_start(s, avctx) < 0) {
+    if (ff_mpv_frame_start(s, avctx) < 0) {
         goto err;
     }
 
@@ -6208,7 +6208,7 @@ static int vc1_decode_frame(AVCodecContext *avctx, void *data,
             ff_er_frame_end(&s->er);
     }
 
-    ff_MPV_frame_end(s);
+    ff_mpv_frame_end(s);
 
     if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
 image:
@@ -6229,7 +6229,7 @@ image:
                 goto err;
             ff_print_debug_info(s, s->current_picture_ptr, pict);
             *got_frame = 1;
-        } else if (s->last_picture_ptr != NULL) {
+        } else if (s->last_picture_ptr) {
             if ((ret = av_frame_ref(pict, s->last_picture_ptr->f)) < 0)
                 goto err;
             ff_print_debug_info(s, s->last_picture_ptr, pict);