proresenc: Do not entangle coded_frame

libavcodec/proresenc.c

@@ -195,6 +195,7 @@ typedef struct ProresContext {
                  int linesize, int16_t *block);
     FDCTDSPContext fdsp;
 
+    const AVFrame *pic;
     int mb_width, mb_height;
     int mbs_per_slice;
     int num_chroma_blocks, chroma_factor;
@@ -743,7 +744,7 @@ static int estimate_alpha_plane(ProresContext *ctx, int *error,
     return bits;
 }
 
-static int find_slice_quant(AVCodecContext *avctx, const AVFrame *pic,
+static int find_slice_quant(AVCodecContext *avctx,
                             int trellis_node, int x, int y, int mbs_per_slice,
                             ProresThreadData *td)
 {
@@ -765,7 +766,7 @@ static int find_slice_quant(AVCodecContext *avctx, const AVFrame *pic,
     if (ctx->pictures_per_frame == 1)
         line_add = 0;
     else
-        line_add = ctx->cur_picture_idx ^ !pic->top_field_first;
+        line_add = ctx->cur_picture_idx ^ !ctx->pic->top_field_first;
     mbs = x + mbs_per_slice;
 
     for (i = 0; i < ctx->num_planes; i++) {
@@ -785,9 +786,9 @@ static int find_slice_quant(AVCodecContext *avctx, const AVFrame *pic,
             pwidth         = avctx->width >> 1;
         }
 
-        linesize[i] = pic->linesize[i] * ctx->pictures_per_frame;
-        src = (const uint16_t*)(pic->data[i] + yp * linesize[i] +
-                                line_add * pic->linesize[i]) + xp;
+        linesize[i] = ctx->pic->linesize[i] * ctx->pictures_per_frame;
+        src = (const uint16_t *)(ctx->pic->data[i] + yp * linesize[i] +
+                                 line_add * ctx->pic->linesize[i]) + xp;
 
         if (i < 3) {
             get_slice_data(ctx, src, linesize[i], xp, yp,
@@ -910,7 +911,7 @@ static int find_quant_thread(AVCodecContext *avctx, void *arg,
     for (x = mb = 0; x < ctx->mb_width; x += mbs_per_slice, mb++) {
         while (ctx->mb_width - x < mbs_per_slice)
             mbs_per_slice >>= 1;
-        q = find_slice_quant(avctx, avctx->coded_frame,
+        q = find_slice_quant(avctx,
                              (mb + 1) * TRELLIS_WIDTH, x, y,
                              mbs_per_slice, td);
     }
@@ -937,7 +938,7 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
     int pkt_size, ret, max_slice_size = 0;
     uint8_t frame_flags;
 
-    *avctx->coded_frame           = *pic;
+    ctx->pic = pic;
     avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
     avctx->coded_frame->key_frame = 1;