svq3: rip out the svq3-relevant parts of pred_motion() out of h264

[ffmpeg] / libavcodec / roqvideodec.c

diff --git a/libavcodec/roqvideodec.c b/libavcodec/roqvideodec.c
index ac7d4bafe0efbc94acaf90b5f0a1fdc54578141b..f7b32f5430544c96efbf2e074f8da36aab61ae41 100644 (file)
--- a/libavcodec/roqvideodec.c
+++ b/libavcodec/roqvideodec.c
@@ -29,6 +29,8 @@
 #include <stdlib.h>
 #include <string.h>
 
+#include "libavutil/imgutils.h"
+
 #include "avcodec.h"
 #include "bytestream.h"
 #include "internal.h"
@@ -190,7 +192,7 @@ static int roq_decode_frame(AVCodecContext *avctx,
     const uint8_t *buf = avpkt->data;
     int buf_size = avpkt->size;
     RoqContext *s = avctx->priv_data;
-    int copy= !s->current_frame->data[0];
+    int copy = !s->current_frame->data[0] && s->last_frame->data[0];
     int ret;
 
     if ((ret = ff_reget_buffer(avctx, s->current_frame)) < 0) {
@@ -198,9 +200,11 @@ static int roq_decode_frame(AVCodecContext *avctx,
         return ret;
     }
 
-    if(copy)
-        av_picture_copy((AVPicture*)s->current_frame, (AVPicture*)s->last_frame,
-                        avctx->pix_fmt, avctx->width, avctx->height);
+    if (copy) {
+        ret = av_frame_copy(s->current_frame, s->last_frame);
+        if (ret < 0)
+            return ret;
+    }
 
     bytestream2_init(&s->gb, buf, buf_size);
     roqvideo_decode_frame(s);
@@ -234,5 +238,5 @@ AVCodec ff_roq_decoder = {
     .init           = roq_decode_init,
     .close          = roq_decode_end,
     .decode         = roq_decode_frame,
-    .capabilities   = CODEC_CAP_DR1,
+    .capabilities   = AV_CODEC_CAP_DR1,
 };