mpegvideo: split ff_draw_horiz_band().

Split out dependency on MpegEncContext.

1 files changed, 52 insertions, 34 deletions

diff --git a/libavcodec/mpegvideo.c b/libavcodec/mpegvideo.c
index 4396ec2df9..08d4cbbf8f 100644
--- a/libavcodec/mpegvideo.c
+++ b/libavcodec/mpegvideo.c
@@ -2459,73 +2459,91 @@ void ff_MPV_decode_mb(MpegEncContext *s, int16_t block[12][64]){
 /**
  * @param h is the normal height, this will be reduced automatically if needed for the last row
  */
-void ff_draw_horiz_band(MpegEncContext *s, int y, int h){
-    const int field_pic= s->picture_structure != PICT_FRAME;
+void ff_draw_horiz_band(AVCodecContext *avctx, DSPContext *dsp, Picture *cur,
+                        Picture *last, int y, int h, int picture_structure,
+                        int first_field, int draw_edges, int low_delay,
+                        int v_edge_pos, int h_edge_pos)
+{
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
+    int hshift = desc->log2_chroma_w;
+    int vshift = desc->log2_chroma_h;
+    const int field_pic = picture_structure != PICT_FRAME;
     if(field_pic){
         h <<= 1;
         y <<= 1;
     }
 
-    if (!s->avctx->hwaccel
-       && !(s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
-       && s->unrestricted_mv
-       && s->current_picture.f.reference
-       && !s->intra_only
-       && !(s->flags&CODEC_FLAG_EMU_EDGE)) {
-        const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->avctx->pix_fmt);
+    if (!avctx->hwaccel &&
+        !(avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU) &&
+        draw_edges &&
+        cur->f.reference &&
+        !(avctx->flags & CODEC_FLAG_EMU_EDGE)) {
+        int *linesize = cur->f.linesize;
         int sides = 0, edge_h;
-        int hshift = desc->log2_chroma_w;
-        int vshift = desc->log2_chroma_h;
         if (y==0) sides |= EDGE_TOP;
-        if (y + h >= s->v_edge_pos) sides |= EDGE_BOTTOM;
+        if (y + h >= v_edge_pos)
+            sides |= EDGE_BOTTOM;
 
-        edge_h= FFMIN(h, s->v_edge_pos - y);
+        edge_h= FFMIN(h, v_edge_pos - y);
 
-        s->dsp.draw_edges(s->current_picture_ptr->f.data[0] +  y         *s->linesize,
-                          s->linesize,           s->h_edge_pos,         edge_h,
-                          EDGE_WIDTH,            EDGE_WIDTH,            sides);
-        s->dsp.draw_edges(s->current_picture_ptr->f.data[1] + (y>>vshift)*s->uvlinesize,
-                          s->uvlinesize,         s->h_edge_pos>>hshift, edge_h>>vshift,
-                          EDGE_WIDTH>>hshift,    EDGE_WIDTH>>vshift,    sides);
-        s->dsp.draw_edges(s->current_picture_ptr->f.data[2] + (y>>vshift)*s->uvlinesize,
-                          s->uvlinesize,         s->h_edge_pos>>hshift, edge_h>>vshift,
-                          EDGE_WIDTH>>hshift,    EDGE_WIDTH>>vshift,    sides);
+        dsp->draw_edges(cur->f.data[0] + y * linesize[0],
+                        linesize[0], h_edge_pos, edge_h,
+                        EDGE_WIDTH, EDGE_WIDTH, sides);
+        dsp->draw_edges(cur->f.data[1] + (y >> vshift) * linesize[1],
+                        linesize[1], h_edge_pos >> hshift, edge_h >> vshift,
+                        EDGE_WIDTH >> hshift, EDGE_WIDTH >> vshift, sides);
+        dsp->draw_edges(cur->f.data[2] + (y >> vshift) * linesize[2],
+                        linesize[2], h_edge_pos >> hshift, edge_h >> vshift,
+                        EDGE_WIDTH >> hshift, EDGE_WIDTH >> vshift, sides);
     }
 
-    h= FFMIN(h, s->avctx->height - y);
+    h = FFMIN(h, avctx->height - y);
 
-    if(field_pic && s->first_field && !(s->avctx->slice_flags&SLICE_FLAG_ALLOW_FIELD)) return;
+    if(field_pic && first_field && !(avctx->slice_flags&SLICE_FLAG_ALLOW_FIELD)) return;
 
-    if (s->avctx->draw_horiz_band) {
+    if (avctx->draw_horiz_band) {
         AVFrame *src;
         int offset[AV_NUM_DATA_POINTERS];
         int i;
 
-        if(s->pict_type==AV_PICTURE_TYPE_B || s->low_delay || (s->avctx->slice_flags&SLICE_FLAG_CODED_ORDER))
-            src = &s->current_picture_ptr->f;
-        else if(s->last_picture_ptr)
-            src = &s->last_picture_ptr->f;
+        if(cur->f.pict_type == AV_PICTURE_TYPE_B || low_delay ||
+           (avctx->slice_flags & SLICE_FLAG_CODED_ORDER))
+            src = &cur->f;
+        else if (last)
+            src = &last->f;
         else
             return;
 
-        if(s->pict_type==AV_PICTURE_TYPE_B && s->picture_structure == PICT_FRAME && s->out_format != FMT_H264){
+        if (cur->f.pict_type == AV_PICTURE_TYPE_B &&
+            picture_structure == PICT_FRAME    &&
+            avctx->codec_id != AV_CODEC_ID_H264  &&
+            avctx->codec_id != AV_CODEC_ID_SVQ3) {
             for (i = 0; i < AV_NUM_DATA_POINTERS; i++)
                 offset[i] = 0;
         }else{
-            offset[0]= y * s->linesize;
+            offset[0]= y * src->linesize[0];
             offset[1]=
-            offset[2]= (y >> s->chroma_y_shift) * s->uvlinesize;
+            offset[2]= (y >> vshift) * src->linesize[1];
             for (i = 3; i < AV_NUM_DATA_POINTERS; i++)
                 offset[i] = 0;
         }
 
         emms_c();
 
-        s->avctx->draw_horiz_band(s->avctx, src, offset,
-                                  y, s->picture_structure, h);
+        avctx->draw_horiz_band(avctx, src, offset,
+                               y, picture_structure, h);
     }
 }
 
+void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h)
+{
+    int draw_edges = s->unrestricted_mv && !s->intra_only;
+    ff_draw_horiz_band(s->avctx, &s->dsp, &s->current_picture,
+                       &s->last_picture, y, h, s->picture_structure,
+                       s->first_field, draw_edges, s->low_delay,
+                       s->v_edge_pos, s->h_edge_pos);
+}
+
 void ff_init_block_index(MpegEncContext *s){ //FIXME maybe rename
     const int linesize   = s->current_picture.f.linesize[0]; //not s->linesize as this would be wrong for field pics
     const int uvlinesize = s->current_picture.f.linesize[1];