Merge commit 'da0c8664b4dc906696803685f7e53ade68594ab8'

* commit 'da0c8664b4dc906696803685f7e53ade68594ab8':
  mpegvideo: Move various temporary buffers to a separate context

Conflicts:
	libavcodec/mpegvideo.c
	libavcodec/mpegvideo_enc.c
	libavcodec/mpegvideo_motion.c
	libavcodec/rv34.c
	libavcodec/vc1_mc.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>

10 files changed, 107 insertions, 101 deletions

diff --git a/libavcodec/intrax8.c b/libavcodec/intrax8.c
index 017536d644..cf01289fdf 100644
--- a/libavcodec/intrax8.c
+++ b/libavcodec/intrax8.c
@@ -303,7 +303,7 @@ static int x8_setup_spatial_predictor(IntraX8Context * const w, const int chroma
     int sum;
     int quant;
 
-    w->dsp.setup_spatial_compensation(s->dest[chroma], s->edge_emu_buffer,
+    w->dsp.setup_spatial_compensation(s->dest[chroma], s->sc.edge_emu_buffer,
                                       s->current_picture.f->linesize[chroma>0],
                                       &range, &sum, w->edges);
     if(chroma){
@@ -639,7 +639,7 @@ static int x8_decode_intra_mb(IntraX8Context* const w, const int chroma){
     if(w->flat_dc){
         dsp_x8_put_solidcolor(w->predicted_dc, s->dest[chroma], s->current_picture.f->linesize[!!chroma]);
     }else{
-        w->dsp.spatial_compensation[w->orient]( s->edge_emu_buffer,
+        w->dsp.spatial_compensation[w->orient]( s->sc.edge_emu_buffer,
                                             s->dest[chroma],
                                             s->current_picture.f->linesize[!!chroma] );
     }
diff --git a/libavcodec/mpegvideo.c b/libavcodec/mpegvideo.c
index e6e53268d8..6af7ad5d75 100644
--- a/libavcodec/mpegvideo.c
+++ b/libavcodec/mpegvideo.c
@@ -364,6 +364,7 @@ av_cold void ff_mpv_idct_init(MpegEncContext *s)
 static int frame_size_alloc(MpegEncContext *s, int linesize)
 {
     int alloc_size = FFALIGN(FFABS(linesize) + 64, 32);
+    ScratchpadContext *sc = &s->sc;
 
     if (s->avctx->hwaccel || s->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU)
         return 0;
@@ -379,19 +380,19 @@ static int frame_size_alloc(MpegEncContext *s, int linesize)
     // at uvlinesize. It supports only YUV420 so 24x24 is enough
     // linesize * interlaced * MBsize
     // we also use this buffer for encoding in encode_mb_internal() needig an additional 32 lines
-    FF_ALLOCZ_ARRAY_OR_GOTO(s->avctx, s->edge_emu_buffer, alloc_size, 4 * 68,
+    FF_ALLOCZ_ARRAY_OR_GOTO(s->avctx, s->sc.edge_emu_buffer, alloc_size, 4 * 68,
                       fail);
 
     FF_ALLOCZ_ARRAY_OR_GOTO(s->avctx, s->me.scratchpad, alloc_size, 4 * 16 * 2,
                       fail)
-    s->me.temp         = s->me.scratchpad;
-    s->rd_scratchpad   = s->me.scratchpad;
-    s->b_scratchpad    = s->me.scratchpad;
-    s->obmc_scratchpad = s->me.scratchpad + 16;
+    s->me.temp          = s->me.scratchpad;
+    sc->rd_scratchpad   = s->me.scratchpad;
+    sc->b_scratchpad    = s->me.scratchpad;
+    sc->obmc_scratchpad = s->me.scratchpad + 16;
 
     return 0;
 fail:
-    av_freep(&s->edge_emu_buffer);
+    av_freep(&sc->edge_emu_buffer);
     return AVERROR(ENOMEM);
 }
 
@@ -466,7 +467,7 @@ static int alloc_frame_buffer(MpegEncContext *s, Picture *pic)
         return -1;
     }
 
-    if (!s->edge_emu_buffer &&
+    if (!s->sc.edge_emu_buffer &&
         (ret = frame_size_alloc(s, pic->f->linesize[0])) < 0) {
         av_log(s->avctx, AV_LOG_ERROR,
                "get_buffer() failed to allocate context scratch buffers.\n");
@@ -740,12 +741,12 @@ static int init_duplicate_context(MpegEncContext *s)
     if (s->mb_height & 1)
         yc_size += 2*s->b8_stride + 2*s->mb_stride;
 
-    s->edge_emu_buffer =
+    s->sc.edge_emu_buffer =
     s->me.scratchpad   =
     s->me.temp         =
-    s->rd_scratchpad   =
-    s->b_scratchpad    =
-    s->obmc_scratchpad = NULL;
+    s->sc.rd_scratchpad   =
+    s->sc.b_scratchpad    =
+    s->sc.obmc_scratchpad = NULL;
 
     if (s->encoding) {
         FF_ALLOCZ_OR_GOTO(s->avctx, s->me.map,
@@ -787,12 +788,12 @@ static void free_duplicate_context(MpegEncContext *s)
     if (!s)
         return;
 
-    av_freep(&s->edge_emu_buffer);
+    av_freep(&s->sc.edge_emu_buffer);
     av_freep(&s->me.scratchpad);
     s->me.temp =
-    s->rd_scratchpad =
-    s->b_scratchpad =
-    s->obmc_scratchpad = NULL;
+    s->sc.rd_scratchpad =
+    s->sc.b_scratchpad =
+    s->sc.obmc_scratchpad = NULL;
 
     av_freep(&s->dct_error_sum);
     av_freep(&s->me.map);
@@ -805,12 +806,12 @@ static void free_duplicate_context(MpegEncContext *s)
 static void backup_duplicate_context(MpegEncContext *bak, MpegEncContext *src)
 {
 #define COPY(a) bak->a = src->a
-    COPY(edge_emu_buffer);
+    COPY(sc.edge_emu_buffer);
     COPY(me.scratchpad);
     COPY(me.temp);
-    COPY(rd_scratchpad);
-    COPY(b_scratchpad);
-    COPY(obmc_scratchpad);
+    COPY(sc.rd_scratchpad);
+    COPY(sc.b_scratchpad);
+    COPY(sc.obmc_scratchpad);
     COPY(me.map);
     COPY(me.score_map);
     COPY(blocks);
@@ -845,7 +846,7 @@ int ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src)
         // exchange uv
         FFSWAP(void *, dst->pblocks[4], dst->pblocks[5]);
     }
-    if (!dst->edge_emu_buffer &&
+    if (!dst->sc.edge_emu_buffer &&
         (ret = frame_size_alloc(dst, dst->linesize)) < 0) {
         av_log(dst->avctx, AV_LOG_ERROR, "failed to allocate context "
                "scratch buffers.\n");
@@ -975,7 +976,7 @@ do {\
     }
 
     // linesize dependend scratch buffer allocation
-    if (!s->edge_emu_buffer)
+    if (!s->sc.edge_emu_buffer)
         if (s1->linesize) {
             if (frame_size_alloc(s, s1->linesize) < 0) {
                 av_log(s->avctx, AV_LOG_ERROR, "Failed to allocate context "
@@ -2393,12 +2394,12 @@ static inline int hpel_motion_lowres(MpegEncContext *s,
 
     if ((unsigned)src_x > FFMAX( h_edge_pos - (!!sx) - w,                 0) ||
         (unsigned)src_y > FFMAX((v_edge_pos >> field_based) - (!!sy) - h, 0)) {
-        s->vdsp.emulated_edge_mc(s->edge_emu_buffer, src,
+        s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, src,
                                  s->linesize, s->linesize,
                                  w + 1, (h + 1) << field_based,
                                  src_x, src_y   << field_based,
                                  h_edge_pos, v_edge_pos);
-        src = s->edge_emu_buffer;
+        src = s->sc.edge_emu_buffer;
         emu = 1;
     }
 
@@ -2495,14 +2496,14 @@ static av_always_inline void mpeg_motion_lowres(MpegEncContext *s,
 
     if ((unsigned) src_x > FFMAX( h_edge_pos - (!!sx) - 2 * block_s,       0) || uvsrc_y<0 ||
         (unsigned) src_y > FFMAX((v_edge_pos >> field_based) - (!!sy) - h, 0)) {
-        s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr_y,
+        s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr_y,
                                  linesize >> field_based, linesize >> field_based,
                                  17, 17 + field_based,
                                 src_x, src_y << field_based, h_edge_pos,
                                 v_edge_pos);
-        ptr_y = s->edge_emu_buffer;
+        ptr_y = s->sc.edge_emu_buffer;
         if (!CONFIG_GRAY || !(s->avctx->flags & CODEC_FLAG_GRAY)) {
-            uint8_t *ubuf = s->edge_emu_buffer + 18 * s->linesize;
+            uint8_t *ubuf = s->sc.edge_emu_buffer + 18 * s->linesize;
             uint8_t *vbuf =ubuf + 9 * s->uvlinesize;
             s->vdsp.emulated_edge_mc(ubuf,  ptr_cb,
                                      uvlinesize >> field_based, uvlinesize >> field_based,
@@ -2583,11 +2584,11 @@ static inline void chroma_4mv_motion_lowres(MpegEncContext *s,
     ptr = ref_picture[1] + offset;
     if ((unsigned) src_x > FFMAX(h_edge_pos - (!!sx) - block_s, 0) ||
         (unsigned) src_y > FFMAX(v_edge_pos - (!!sy) - block_s, 0)) {
-        s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr,
+        s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
                                  s->uvlinesize, s->uvlinesize,
                                  9, 9,
                                  src_x, src_y, h_edge_pos, v_edge_pos);
-        ptr = s->edge_emu_buffer;
+        ptr = s->sc.edge_emu_buffer;
         emu = 1;
     }
     sx = (sx << 2) >> lowres;
@@ -2596,11 +2597,11 @@ static inline void chroma_4mv_motion_lowres(MpegEncContext *s,
 
     ptr = ref_picture[2] + offset;
     if (emu) {
-        s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr,
+        s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
                                  s->uvlinesize, s->uvlinesize,
                                  9, 9,
                                  src_x, src_y, h_edge_pos, v_edge_pos);
-        ptr = s->edge_emu_buffer;
+        ptr = s->sc.edge_emu_buffer;
     }
     pix_op[op_index](dest_cr, ptr, s->uvlinesize, block_s, sx, sy);
 }
@@ -2932,9 +2933,9 @@ void mpv_decode_mb_internal(MpegEncContext *s, int16_t block[12][64],
             dest_cb= s->dest[1];
             dest_cr= s->dest[2];
         }else{
-            dest_y = s->b_scratchpad;
-            dest_cb= s->b_scratchpad+16*linesize;
-            dest_cr= s->b_scratchpad+32*linesize;
+            dest_y = s->sc.b_scratchpad;
+            dest_cb= s->sc.b_scratchpad+16*linesize;
+            dest_cr= s->sc.b_scratchpad+32*linesize;
         }
 
         if (!s->mb_intra) {
diff --git a/libavcodec/mpegvideo.h b/libavcodec/mpegvideo.h
index c72f035550..9f15e91861 100644
--- a/libavcodec/mpegvideo.h
+++ b/libavcodec/mpegvideo.h
@@ -143,6 +143,13 @@ typedef struct Picture{
     uint64_t error[AV_NUM_DATA_POINTERS];
 } Picture;
 
+typedef struct ScratchpadContext {
+    uint8_t *edge_emu_buffer;     ///< temporary buffer for if MVs point to out-of-frame data
+    uint8_t *rd_scratchpad;       ///< scratchpad for rate distortion mb decision
+    uint8_t *obmc_scratchpad;
+    uint8_t *b_scratchpad;        ///< scratchpad used for writing into write only buffers
+} ScratchpadContext;
+
 /**
  * MpegEncContext.
  */
@@ -266,10 +273,8 @@ typedef struct MpegEncContext {
     uint8_t *mbintra_table;       ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
     uint8_t *cbp_table;           ///< used to store cbp, ac_pred for partitioned decoding
     uint8_t *pred_dir_table;      ///< used to store pred_dir for partitioned decoding
-    uint8_t *edge_emu_buffer;     ///< temporary buffer for if MVs point to out-of-frame data
-    uint8_t *rd_scratchpad;       ///< scratchpad for rate distortion mb decision
-    uint8_t *obmc_scratchpad;
-    uint8_t *b_scratchpad;        ///< scratchpad used for writing into write only buffers
+
+    ScratchpadContext sc;
 
     int qscale;                 ///< QP
     int chroma_qscale;          ///< chroma QP
diff --git a/libavcodec/mpegvideo_enc.c b/libavcodec/mpegvideo_enc.c
index d7279c15d3..80b33618c7 100644
--- a/libavcodec/mpegvideo_enc.c
+++ b/libavcodec/mpegvideo_enc.c
@@ -2100,7 +2100,7 @@ static av_always_inline void encode_mb_internal(MpegEncContext *s,
              (mb_y * mb_block_height * wrap_c) + mb_x * mb_block_width;
 
     if((mb_x * 16 + 16 > s->width || mb_y * 16 + 16 > s->height) && s->codec_id != AV_CODEC_ID_AMV){
-        uint8_t *ebuf = s->edge_emu_buffer + 36 * wrap_y;
+        uint8_t *ebuf = s->sc.edge_emu_buffer + 36 * wrap_y;
         int cw = (s->width  + s->chroma_x_shift) >> s->chroma_x_shift;
         int ch = (s->height + s->chroma_y_shift) >> s->chroma_y_shift;
         s->vdsp.emulated_edge_mc(ebuf, ptr_y,
@@ -2512,9 +2512,9 @@ static inline void encode_mb_hq(MpegEncContext *s, MpegEncContext *backup, MpegE
 
     if(*next_block){
         memcpy(dest_backup, s->dest, sizeof(s->dest));
-        s->dest[0] = s->rd_scratchpad;
-        s->dest[1] = s->rd_scratchpad + 16*s->linesize;
-        s->dest[2] = s->rd_scratchpad + 16*s->linesize + 8;
+        s->dest[0] = s->sc.rd_scratchpad;
+        s->dest[1] = s->sc.rd_scratchpad + 16*s->linesize;
+        s->dest[2] = s->sc.rd_scratchpad + 16*s->linesize + 8;
         av_assert0(s->linesize >= 32); //FIXME
     }
 
@@ -3213,9 +3213,9 @@ static int encode_thread(AVCodecContext *c, void *arg){
                     ff_h263_update_motion_val(s);
 
                 if(next_block==0){ //FIXME 16 vs linesize16
-                    s->hdsp.put_pixels_tab[0][0](s->dest[0], s->rd_scratchpad                     , s->linesize  ,16);
-                    s->hdsp.put_pixels_tab[1][0](s->dest[1], s->rd_scratchpad + 16*s->linesize    , s->uvlinesize, 8);
-                    s->hdsp.put_pixels_tab[1][0](s->dest[2], s->rd_scratchpad + 16*s->linesize + 8, s->uvlinesize, 8);
+                    s->hdsp.put_pixels_tab[0][0](s->dest[0], s->sc.rd_scratchpad                     , s->linesize  ,16);
+                    s->hdsp.put_pixels_tab[1][0](s->dest[1], s->sc.rd_scratchpad + 16*s->linesize    , s->uvlinesize, 8);
+                    s->hdsp.put_pixels_tab[1][0](s->dest[2], s->sc.rd_scratchpad + 16*s->linesize + 8, s->uvlinesize, 8);
                 }
 
                 if(s->avctx->mb_decision == FF_MB_DECISION_BITS)
diff --git a/libavcodec/mpegvideo_motion.c b/libavcodec/mpegvideo_motion.c
index 060f3f25b1..f1956f0e73 100644
--- a/libavcodec/mpegvideo_motion.c
+++ b/libavcodec/mpegvideo_motion.c
@@ -64,12 +64,12 @@ static void gmc1_motion(MpegEncContext *s,
 
     if ((unsigned)src_x >= FFMAX(s->h_edge_pos - 17, 0) ||
         (unsigned)src_y >= FFMAX(s->v_edge_pos - 17, 0)) {
-        s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr,
+        s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
                                  linesize, linesize,
                                  17, 17,
                                  src_x, src_y,
                                  s->h_edge_pos, s->v_edge_pos);
-        ptr = s->edge_emu_buffer;
+        ptr = s->sc.edge_emu_buffer;
     }
 
     if ((motion_x | motion_y) & 7) {
@@ -108,12 +108,12 @@ static void gmc1_motion(MpegEncContext *s,
     ptr    = ref_picture[1] + offset;
     if ((unsigned)src_x >= FFMAX((s->h_edge_pos >> 1) - 9, 0) ||
         (unsigned)src_y >= FFMAX((s->v_edge_pos >> 1) - 9, 0)) {
-        s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr,
+        s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
                                  uvlinesize, uvlinesize,
                                  9, 9,
                                  src_x, src_y,
                                  s->h_edge_pos >> 1, s->v_edge_pos >> 1);
-        ptr = s->edge_emu_buffer;
+        ptr = s->sc.edge_emu_buffer;
         emu = 1;
     }
     s->mdsp.gmc1(dest_cb, ptr, uvlinesize, 8,
@@ -121,12 +121,12 @@ static void gmc1_motion(MpegEncContext *s,
 
     ptr = ref_picture[2] + offset;
     if (emu) {
-        s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr,
+        s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
                                  uvlinesize, uvlinesize,
                                  9, 9,
                                  src_x, src_y,
                                  s->h_edge_pos >> 1, s->v_edge_pos >> 1);
-        ptr = s->edge_emu_buffer;
+        ptr = s->sc.edge_emu_buffer;
     }
     s->mdsp.gmc1(dest_cr, ptr, uvlinesize, 8,
                  motion_x & 15, motion_y & 15, 128 - s->no_rounding);
@@ -213,12 +213,12 @@ static inline int hpel_motion(MpegEncContext *s,
 
         if ((unsigned)src_x >= FFMAX(s->h_edge_pos - (motion_x & 1) - 7, 0) ||
             (unsigned)src_y >= FFMAX(s->v_edge_pos - (motion_y & 1) - 7, 0)) {
-            s->vdsp.emulated_edge_mc(s->edge_emu_buffer, src,
+            s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, src,
                                      s->linesize, s->linesize,
                                      9, 9,
                                      src_x, src_y,
                                      s->h_edge_pos, s->v_edge_pos);
-            src = s->edge_emu_buffer;
+            src = s->sc.edge_emu_buffer;
             emu = 1;
         }
     pix_op[dxy](dest, src, s->linesize, 8);
@@ -318,14 +318,14 @@ void mpeg_motion_internal(MpegEncContext *s,
             return;
         }
         src_y = (unsigned)src_y << field_based;
-        s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr_y,
+        s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr_y,
                                  s->linesize, s->linesize,
                                  17, 17 + field_based,
                                  src_x, src_y,
                                  s->h_edge_pos, s->v_edge_pos);
-        ptr_y = s->edge_emu_buffer;
+        ptr_y = s->sc.edge_emu_buffer;
         if (!CONFIG_GRAY || !(s->avctx->flags & CODEC_FLAG_GRAY)) {
-            uint8_t *ubuf = s->edge_emu_buffer + 18 * s->linesize;
+            uint8_t *ubuf = s->sc.edge_emu_buffer + 18 * s->linesize;
             uint8_t *vbuf = ubuf + 9 * s->uvlinesize;
             uvsrc_y = (unsigned)uvsrc_y << field_based;
             s->vdsp.emulated_edge_mc(ubuf, ptr_cb,
@@ -478,7 +478,7 @@ static inline void obmc_motion(MpegEncContext *s,
         if (i && mv[i][0] == mv[MID][0] && mv[i][1] == mv[MID][1]) {
             ptr[i] = ptr[MID];
         } else {
-            ptr[i] = s->obmc_scratchpad + 8 * (i & 1) +
+            ptr[i] = s->sc.obmc_scratchpad + 8 * (i & 1) +
                      s->linesize * 8 * (i >> 1);
             hpel_motion(s, ptr[i], src, src_x, src_y, pix_op,
                         mv[i][0], mv[i][1]);
@@ -541,14 +541,14 @@ static inline void qpel_motion(MpegEncContext *s,
 
     if ((unsigned)src_x >= FFMAX(s->h_edge_pos - (motion_x & 3) - 15   , 0) ||
         (unsigned)src_y >= FFMAX(   v_edge_pos - (motion_y & 3) - h + 1, 0)) {
-        s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr_y,
+        s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr_y,
                                  s->linesize, s->linesize,
                                  17, 17 + field_based,
                                  src_x, src_y << field_based,
                                  s->h_edge_pos, s->v_edge_pos);
-        ptr_y = s->edge_emu_buffer;
+        ptr_y = s->sc.edge_emu_buffer;
         if (!CONFIG_GRAY || !(s->avctx->flags & CODEC_FLAG_GRAY)) {
-            uint8_t *ubuf = s->edge_emu_buffer + 18 * s->linesize;
+            uint8_t *ubuf = s->sc.edge_emu_buffer + 18 * s->linesize;
             uint8_t *vbuf = ubuf + 9 * s->uvlinesize;
             s->vdsp.emulated_edge_mc(ubuf, ptr_cb,
                                      s->uvlinesize, s->uvlinesize,
@@ -625,22 +625,22 @@ static void chroma_4mv_motion(MpegEncContext *s,
     ptr    = ref_picture[1] + offset;
     if ((unsigned)src_x >= FFMAX((s->h_edge_pos >> 1) - (dxy  & 1) - 7, 0) ||
         (unsigned)src_y >= FFMAX((s->v_edge_pos >> 1) - (dxy >> 1) - 7, 0)) {
-        s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr,
+        s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
                                  s->uvlinesize, s->uvlinesize,
                                  9, 9, src_x, src_y,
                                  s->h_edge_pos >> 1, s->v_edge_pos >> 1);
-        ptr = s->edge_emu_buffer;
+        ptr = s->sc.edge_emu_buffer;
         emu = 1;
     }
     pix_op[dxy](dest_cb, ptr, s->uvlinesize, 8);
 
     ptr = ref_picture[2] + offset;
     if (emu) {
-        s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr,
+        s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
                                  s->uvlinesize, s->uvlinesize,
                                  9, 9, src_x, src_y,
                                  s->h_edge_pos >> 1, s->v_edge_pos >> 1);
-        ptr = s->edge_emu_buffer;
+        ptr = s->sc.edge_emu_buffer;
     }
     pix_op[dxy](dest_cr, ptr, s->uvlinesize, 8);
 }
@@ -783,13 +783,13 @@ static inline void apply_8x8(MpegEncContext *s,
             ptr = ref_picture[0] + (src_y * s->linesize) + (src_x);
             if ((unsigned)src_x >= FFMAX(s->h_edge_pos - (motion_x & 3) - 7, 0) ||
                 (unsigned)src_y >= FFMAX(s->v_edge_pos - (motion_y & 3) - 7, 0)) {
-                s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr,
+                s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
                                          s->linesize, s->linesize,
                                          9, 9,
                                          src_x, src_y,
                                          s->h_edge_pos,
                                          s->v_edge_pos);
-                ptr = s->edge_emu_buffer;
+                ptr = s->sc.edge_emu_buffer;
             }
             dest = dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize;
             qpix_op[1][dxy](dest, ptr, s->linesize);
diff --git a/libavcodec/rv34.c b/libavcodec/rv34.c
index a232ab2593..c109a9e003 100644
--- a/libavcodec/rv34.c
+++ b/libavcodec/rv34.c
@@ -726,12 +726,12 @@ static inline void rv34_mc(RV34DecContext *r, const int block_type,
        (unsigned)(src_x - !!lx*2) > s->h_edge_pos - !!lx*2 - (width <<3) - 4 ||
        (unsigned)(src_y - !!ly*2) > s->v_edge_pos - !!ly*2 - (height<<3) - 4) {
         srcY -= 2 + 2*s->linesize;
-        s->vdsp.emulated_edge_mc(s->edge_emu_buffer, srcY,
+        s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, srcY,
                                  s->linesize, s->linesize,
                                  (width << 3) + 6, (height << 3) + 6,
                                  src_x - 2, src_y - 2,
                                  s->h_edge_pos, s->v_edge_pos);
-        srcY = s->edge_emu_buffer + 2 + 2*s->linesize;
+        srcY = s->sc.edge_emu_buffer + 2 + 2*s->linesize;
         emu = 1;
     }
     if(!weighted){
@@ -756,7 +756,7 @@ static inline void rv34_mc(RV34DecContext *r, const int block_type,
     is16x16 = (block_type != RV34_MB_P_8x8) && (block_type != RV34_MB_P_16x8) && (block_type != RV34_MB_P_8x16);
     qpel_mc[!is16x16][dxy](Y, srcY, s->linesize);
     if (emu) {
-        uint8_t *uvbuf = s->edge_emu_buffer;
+        uint8_t *uvbuf = s->sc.edge_emu_buffer;
 
         s->vdsp.emulated_edge_mc(uvbuf, srcU,
                                  s->uvlinesize, s->uvlinesize,
diff --git a/libavcodec/snow.c b/libavcodec/snow.c
index 5201d57422..fc2e7279f3 100644
--- a/libavcodec/snow.c
+++ b/libavcodec/snow.c
@@ -704,7 +704,7 @@ av_cold void ff_snow_common_end(SnowContext *s)
     av_freep(&s->m.me.scratchpad);
     av_freep(&s->m.me.map);
     av_freep(&s->m.me.score_map);
-    av_freep(&s->m.obmc_scratchpad);
+    av_freep(&s->m.sc.obmc_scratchpad);
 
     av_freep(&s->block);
     av_freep(&s->scratchbuf);
diff --git a/libavcodec/snowenc.c b/libavcodec/snowenc.c
index 5c5cc66505..bd5c0fde15 100644
--- a/libavcodec/snowenc.c
+++ b/libavcodec/snowenc.c
@@ -75,8 +75,8 @@ static av_cold int encode_init(AVCodecContext *avctx)
     s->m.me.scratchpad= av_mallocz_array((avctx->width+64), 2*16*2*sizeof(uint8_t));
     s->m.me.map       = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t));
     s->m.me.score_map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t));
-    s->m.obmc_scratchpad= av_mallocz(MB_SIZE*MB_SIZE*12*sizeof(uint32_t));
-    if (!s->m.me.scratchpad || !s->m.me.map || !s->m.me.score_map || !s->m.obmc_scratchpad)
+    s->m.sc.obmc_scratchpad= av_mallocz(MB_SIZE*MB_SIZE*12*sizeof(uint32_t));
+    if (!s->m.me.scratchpad || !s->m.me.map || !s->m.me.score_map || !s->m.sc.obmc_scratchpad)
         return AVERROR(ENOMEM);
 
     ff_h263_encode_init(&s->m); //mv_penalty
@@ -501,7 +501,7 @@ static int get_dc(SnowContext *s, int mb_x, int mb_y, int plane_index){
     const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
     const int ref_stride= s->current_picture->linesize[plane_index];
     uint8_t *src= s-> input_picture->data[plane_index];
-    IDWTELEM *dst= (IDWTELEM*)s->m.obmc_scratchpad + plane_index*block_size*block_size*4; //FIXME change to unsigned
+    IDWTELEM *dst= (IDWTELEM*)s->m.sc.obmc_scratchpad + plane_index*block_size*block_size*4; //FIXME change to unsigned
     const int b_stride = s->b_width << s->block_max_depth;
     const int w= p->width;
     const int h= p->height;
@@ -596,7 +596,7 @@ static int get_block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index, uin
     const int ref_stride= s->current_picture->linesize[plane_index];
     uint8_t *dst= s->current_picture->data[plane_index];
     uint8_t *src= s->  input_picture->data[plane_index];
-    IDWTELEM *pred= (IDWTELEM*)s->m.obmc_scratchpad + plane_index*block_size*block_size*4;
+    IDWTELEM *pred= (IDWTELEM*)s->m.sc.obmc_scratchpad + plane_index*block_size*block_size*4;
     uint8_t *cur = s->scratchbuf;
     uint8_t *tmp = s->emu_edge_buffer;
     const int b_stride = s->b_width << s->block_max_depth;
diff --git a/libavcodec/vc1_mc.c b/libavcodec/vc1_mc.c
index 1a78c178db..535824339e 100644
--- a/libavcodec/vc1_mc.c
+++ b/libavcodec/vc1_mc.c
@@ -271,25 +271,25 @@ void ff_vc1_mc_1mv(VC1Context *v, int dir)
 
     /* for grayscale we should not try to read from unknown area */
     if (CONFIG_GRAY && s->avctx->flags & CODEC_FLAG_GRAY) {
-        srcU = s->edge_emu_buffer + 18 * s->linesize;
-        srcV = s->edge_emu_buffer + 18 * s->linesize;
+        srcU = s->sc.edge_emu_buffer + 18 * s->linesize;
+        srcV = s->sc.edge_emu_buffer + 18 * s->linesize;
     }
 
     if (v->rangeredfrm || use_ic
         || s->h_edge_pos < 22 || v_edge_pos < 22
         || (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx&3) - 16 - s->mspel * 3
         || (unsigned)(src_y - 1)        > v_edge_pos    - (my&3) - 16 - 3) {
-        uint8_t *ubuf = s->edge_emu_buffer + 19 * s->linesize;
+        uint8_t *ubuf = s->sc.edge_emu_buffer + 19 * s->linesize;
         uint8_t *vbuf = ubuf + 9 * s->uvlinesize;
         const int k = 17 + s->mspel * 2;
 
         srcY -= s->mspel * (1 + s->linesize);
-        s->vdsp.emulated_edge_mc(s->edge_emu_buffer, srcY,
+        s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, srcY,
                                  s->linesize, s->linesize,
                                  k, k,
                                  src_x - s->mspel, src_y - s->mspel,
                                  s->h_edge_pos, v_edge_pos);
-        srcY = s->edge_emu_buffer;
+        srcY = s->sc.edge_emu_buffer;
         s->vdsp.emulated_edge_mc(ubuf, srcU,
                                  s->uvlinesize, s->uvlinesize,
                                  8 + 1, 8 + 1,
@@ -467,12 +467,12 @@ void ff_vc1_mc_4mv_luma(VC1Context *v, int n, int dir, int avg)
 
         srcY -= s->mspel * (1 + (s->linesize << fieldmv));
         /* check emulate edge stride and offset */
-        s->vdsp.emulated_edge_mc(s->edge_emu_buffer, srcY,
+        s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, srcY,
                                  s->linesize, s->linesize,
                                  k, k << fieldmv,
                                  src_x - s->mspel, src_y - (s->mspel << fieldmv),
                                  s->h_edge_pos, v_edge_pos);
-        srcY = s->edge_emu_buffer;
+        srcY = s->sc.edge_emu_buffer;
         /* if we deal with range reduction we need to scale source blocks */
         if (v->rangeredfrm) {
             vc1_scale_luma(srcY, k, s->linesize << fieldmv);
@@ -602,16 +602,16 @@ void ff_vc1_mc_4mv_chroma(VC1Context *v, int dir)
         || s->h_edge_pos < 18 || v_edge_pos < 18
         || (unsigned)uvsrc_x > (s->h_edge_pos >> 1) - 9
         || (unsigned)uvsrc_y > (v_edge_pos    >> 1) - 9) {
-        s->vdsp.emulated_edge_mc(s->edge_emu_buffer, srcU,
+        s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, srcU,
                                  s->uvlinesize, s->uvlinesize,
                                  8 + 1, 8 + 1, uvsrc_x, uvsrc_y,
                                  s->h_edge_pos >> 1, v_edge_pos >> 1);
-        s->vdsp.emulated_edge_mc(s->edge_emu_buffer + 16, srcV,
+        s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer + 16, srcV,
                                  s->uvlinesize, s->uvlinesize,
                                  8 + 1, 8 + 1, uvsrc_x, uvsrc_y,
                                  s->h_edge_pos >> 1, v_edge_pos >> 1);
-        srcU = s->edge_emu_buffer;
-        srcV = s->edge_emu_buffer + 16;
+        srcU = s->sc.edge_emu_buffer;
+        srcV = s->sc.edge_emu_buffer + 16;
 
         /* if we deal with range reduction we need to scale source blocks */
         if (v->rangeredfrm) {
@@ -704,16 +704,16 @@ void ff_vc1_mc_4mv_chroma4(VC1Context *v, int dir, int dir2, int avg)
             || s->h_edge_pos < 10 || v_edge_pos < (5 << fieldmv)
             || (unsigned)uvsrc_x > (s->h_edge_pos >> 1) - 5
             || (unsigned)uvsrc_y > v_edge_pos - (5 << fieldmv)) {
-            s->vdsp.emulated_edge_mc(s->edge_emu_buffer, srcU,
+            s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, srcU,
                                      s->uvlinesize, s->uvlinesize,
                                      5, (5 << fieldmv), uvsrc_x, uvsrc_y,
                                      s->h_edge_pos >> 1, v_edge_pos);
-            s->vdsp.emulated_edge_mc(s->edge_emu_buffer + 16, srcV,
+            s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer + 16, srcV,
                                      s->uvlinesize, s->uvlinesize,
                                      5, (5 << fieldmv), uvsrc_x, uvsrc_y,
                                      s->h_edge_pos >> 1, v_edge_pos);
-            srcU = s->edge_emu_buffer;
-            srcV = s->edge_emu_buffer + 16;
+            srcU = s->sc.edge_emu_buffer;
+            srcV = s->sc.edge_emu_buffer + 16;
 
             /* if we deal with intensity compensation we need to scale source blocks */
             if (use_ic) {
@@ -802,24 +802,24 @@ void ff_vc1_interp_mc(VC1Context *v)
 
     /* for grayscale we should not try to read from unknown area */
     if (CONFIG_GRAY && s->avctx->flags & CODEC_FLAG_GRAY) {
-        srcU = s->edge_emu_buffer + 18 * s->linesize;
-        srcV = s->edge_emu_buffer + 18 * s->linesize;
+        srcU = s->sc.edge_emu_buffer + 18 * s->linesize;
+        srcV = s->sc.edge_emu_buffer + 18 * s->linesize;
     }
 
     if (v->rangeredfrm || s->h_edge_pos < 22 || v_edge_pos < 22 || use_ic
         || (unsigned)(src_x - 1) > s->h_edge_pos - (mx & 3) - 16 - 3
         || (unsigned)(src_y - 1) > v_edge_pos    - (my & 3) - 16 - 3) {
-        uint8_t *ubuf = s->edge_emu_buffer + 19 * s->linesize;
+        uint8_t *ubuf = s->sc.edge_emu_buffer + 19 * s->linesize;
         uint8_t *vbuf = ubuf + 9 * s->uvlinesize;
         const int k = 17 + s->mspel * 2;
 
         srcY -= s->mspel * (1 + s->linesize);
-        s->vdsp.emulated_edge_mc(s->edge_emu_buffer, srcY,
+        s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, srcY,
                                  s->linesize, s->linesize,
                                  k, k,
                                  src_x - s->mspel, src_y - s->mspel,
                                  s->h_edge_pos, v_edge_pos);
-        srcY = s->edge_emu_buffer;
+        srcY = s->sc.edge_emu_buffer;
         s->vdsp.emulated_edge_mc(ubuf, srcU,
                                  s->uvlinesize, s->uvlinesize,
                                  8 + 1, 8 + 1,
diff --git a/libavcodec/wmv2.c b/libavcodec/wmv2.c
index 1cfb7eb0e4..963bda05ec 100644
--- a/libavcodec/wmv2.c
+++ b/libavcodec/wmv2.c
@@ -127,11 +127,11 @@ void ff_mspel_motion(MpegEncContext *s, uint8_t *dest_y,
 
     if (src_x < 1 || src_y < 1 || src_x + 17 >= s->h_edge_pos ||
         src_y + h + 1 >= v_edge_pos) {
-        s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr - 1 - s->linesize,
+        s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr - 1 - s->linesize,
                                  s->linesize, s->linesize, 19, 19,
                                  src_x - 1, src_y - 1,
                                  s->h_edge_pos, s->v_edge_pos);
-        ptr = s->edge_emu_buffer + 1 + s->linesize;
+        ptr = s->sc.edge_emu_buffer + 1 + s->linesize;
         emu = 1;
     }
 
@@ -162,23 +162,23 @@ void ff_mspel_motion(MpegEncContext *s, uint8_t *dest_y,
     offset = (src_y * uvlinesize) + src_x;
     ptr    = ref_picture[1] + offset;
     if (emu) {
-        s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr,
+        s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
                                  s->uvlinesize, s->uvlinesize,
                                  9, 9,
                                  src_x, src_y,
                                  s->h_edge_pos >> 1, s->v_edge_pos >> 1);
-        ptr = s->edge_emu_buffer;
+        ptr = s->sc.edge_emu_buffer;
     }
     pix_op[1][dxy](dest_cb, ptr, uvlinesize, h >> 1);
 
     ptr = ref_picture[2] + offset;
     if (emu) {
-        s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr,
+        s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
                                  s->uvlinesize, s->uvlinesize,
                                  9, 9,
                                  src_x, src_y,
                                  s->h_edge_pos >> 1, s->v_edge_pos >> 1);
-        ptr = s->edge_emu_buffer;
+        ptr = s->sc.edge_emu_buffer;
     }
     pix_op[1][dxy](dest_cr, ptr, uvlinesize, h >> 1);
 }