svq3: stop using H264Picture

The SVQ3 decoder has been decoupled from the H.264 decoder, so it can
now use its own data type.

libavcodec/svq3.c

@@ -65,6 +65,20 @@
  * svq3 decoder.
  */
 
+typedef struct SVQ3Frame {
+    AVFrame *f;
+
+    AVBufferRef *motion_val_buf[2];
+    int16_t (*motion_val[2])[2];
+
+    AVBufferRef *mb_type_buf;
+    uint32_t *mb_type;
+
+
+    AVBufferRef *ref_index_buf[2];
+    int8_t *ref_index[2];
+} SVQ3Frame;
+
 typedef struct SVQ3Context {
     AVCodecContext *avctx;
 
@@ -74,9 +88,9 @@ typedef struct SVQ3Context {
     TpelDSPContext tdsp;
     VideoDSPContext vdsp;
 
-    H264Picture *cur_pic;
-    H264Picture *next_pic;
-    H264Picture *last_pic;
+    SVQ3Frame *cur_pic;
+    SVQ3Frame *next_pic;
+    SVQ3Frame *last_pic;
     GetBitContext gb;
     GetBitContext gb_slice;
     uint8_t *slice_buf;
@@ -410,7 +424,7 @@ static inline void svq3_mc_dir_part(SVQ3Context *s,
                                     int mx, int my, int dxy,
                                     int thirdpel, int dir, int avg)
 {
-    const H264Picture *pic = (dir == 0) ? s->last_pic : s->next_pic;
+    const SVQ3Frame *pic = (dir == 0) ? s->last_pic : s->next_pic;
     uint8_t *src, *dest;
     int i, emu = 0;
     int blocksize = 2 - (width >> 3); // 16->0, 8->1, 4->2
@@ -1298,7 +1312,7 @@ static av_cold int svq3_decode_init(AVCodecContext *avctx)
     return 0;
 }
 
-static void free_picture(AVCodecContext *avctx, H264Picture *pic)
+static void free_picture(AVCodecContext *avctx, SVQ3Frame *pic)
 {
     int i;
     for (i = 0; i < 2; i++) {
@@ -1310,7 +1324,7 @@ static void free_picture(AVCodecContext *avctx, H264Picture *pic)
     av_frame_unref(pic->f);
 }
 
-static int get_buffer(AVCodecContext *avctx, H264Picture *pic)
+static int get_buffer(AVCodecContext *avctx, SVQ3Frame *pic)
 {
     SVQ3Context *s = avctx->priv_data;
     const int big_mb_num    = s->mb_stride * (s->mb_height + 1) + 1;
@@ -1339,10 +1353,10 @@ static int get_buffer(AVCodecContext *avctx, H264Picture *pic)
             pic->ref_index[i]  = pic->ref_index_buf[i]->data;
         }
     }
-    pic->reference = !(s->pict_type == AV_PICTURE_TYPE_B);
 
     ret = ff_get_buffer(avctx, pic->f,
-                        pic->reference ? AV_GET_BUFFER_FLAG_REF : 0);
+                        (s->pict_type != AV_PICTURE_TYPE_B) ?
+                         AV_GET_BUFFER_FLAG_REF : 0);
     if (ret < 0)
         goto fail;
 
@@ -1388,7 +1402,7 @@ static int svq3_decode_frame(AVCodecContext *avctx, void *data,
         return -1;
 
     if (s->pict_type != AV_PICTURE_TYPE_B)
-        FFSWAP(H264Picture*, s->next_pic, s->last_pic);
+        FFSWAP(SVQ3Frame*, s->next_pic, s->last_pic);
 
     av_frame_unref(s->cur_pic->f);
 
@@ -1539,7 +1553,7 @@ static int svq3_decode_frame(AVCodecContext *avctx, void *data,
         *got_frame = 1;
 
     if (s->pict_type != AV_PICTURE_TYPE_B) {
-        FFSWAP(H264Picture*, s->cur_pic, s->next_pic);
+        FFSWAP(SVQ3Frame*, s->cur_pic, s->next_pic);
     } else {
         av_frame_unref(s->cur_pic->f);
     }