* H.26L/H.264/AVC/JVT/14496-10/... motion vector predicion
* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
- * @file libavcodec/h264_mvpred.h
+ * @file
* H.264 / AVC / MPEG4 part10 motion vector predicion.
* @author Michael Niedermayer <michaelni@gmx.at>
*/
#include "internal.h"
#include "avcodec.h"
#include "h264.h"
+#include "mpegutils.h"
-//#undef NDEBUG
#include <assert.h>
-static inline int fetch_diagonal_mv(H264Context *h, const int16_t **C, int i, int list, int part_width){
- const int topright_ref= h->ref_cache[list][ i - 8 + part_width ];
- MpegEncContext *s = &h->s;
+static av_always_inline int fetch_diagonal_mv(const H264Context *h, H264SliceContext *sl,
+ const int16_t **C,
+ int i, int list, int part_width)
+{
+ const int topright_ref = sl->ref_cache[list][i - 8 + part_width];
/* there is no consistent mapping of mvs to neighboring locations that will
* make mbaff happy, so we can't move all this logic to fill_caches */
- if(FRAME_MBAFF){
-
-#define SET_DIAG_MV(MV_OP, REF_OP, XY, Y4)\
- const int xy = XY, y4 = Y4;\
- const int mb_type = mb_types[xy+(y4>>2)*s->mb_stride];\
- if(!USES_LIST(mb_type,list))\
- return LIST_NOT_USED;\
- mv = s->current_picture_ptr->motion_val[list][h->mb2b_xy[xy]+3 + y4*h->b_stride];\
- h->mv_cache[list][scan8[0]-2][0] = mv[0];\
- h->mv_cache[list][scan8[0]-2][1] = mv[1] MV_OP;\
- return s->current_picture_ptr->ref_index[list][4*xy+1 + (y4&~1)] REF_OP;
-
- if(topright_ref == PART_NOT_AVAILABLE
- && i >= scan8[0]+8 && (i&7)==4
- && h->ref_cache[list][scan8[0]-1] != PART_NOT_AVAILABLE){
- const uint32_t *mb_types = s->current_picture_ptr->mb_type;
+ if (FRAME_MBAFF(h)) {
+#define SET_DIAG_MV(MV_OP, REF_OP, XY, Y4) \
+ const int xy = XY, y4 = Y4; \
+ const int mb_type = mb_types[xy + (y4 >> 2) * h->mb_stride]; \
+ if (!USES_LIST(mb_type, list)) \
+ return LIST_NOT_USED; \
+ mv = h->cur_pic_ptr->motion_val[list][h->mb2b_xy[xy] + 3 + y4 * h->b_stride]; \
+ sl->mv_cache[list][scan8[0] - 2][0] = mv[0]; \
+ sl->mv_cache[list][scan8[0] - 2][1] = mv[1] MV_OP; \
+ return h->cur_pic_ptr->ref_index[list][4 * xy + 1 + (y4 & ~1)] REF_OP;
+
+ if (topright_ref == PART_NOT_AVAILABLE
+ && i >= scan8[0] + 8 && (i & 7) == 4
+ && sl->ref_cache[list][scan8[0] - 1] != PART_NOT_AVAILABLE) {
+ const uint32_t *mb_types = h->cur_pic_ptr->mb_type;
const int16_t *mv;
- AV_ZERO32(h->mv_cache[list][scan8[0]-2]);
- *C = h->mv_cache[list][scan8[0]-2];
+ AV_ZERO32(sl->mv_cache[list][scan8[0] - 2]);
+ *C = sl->mv_cache[list][scan8[0] - 2];
- if(!MB_FIELD
- && IS_INTERLACED(mb_types[h->left_mb_xy[0]])){
- SET_DIAG_MV(*2, >>1, h->left_mb_xy[0]+s->mb_stride, (s->mb_y&1)*2+(i>>4)-1);
- assert(h->left_mb_xy[0] == h->left_mb_xy[1]);
+ if (!MB_FIELD(sl) && IS_INTERLACED(sl->left_type[0])) {
+ SET_DIAG_MV(* 2, >> 1, sl->left_mb_xy[0] + h->mb_stride,
+ (sl->mb_y & 1) * 2 + (i >> 5));
}
- if(MB_FIELD
- && !IS_INTERLACED(mb_types[h->left_mb_xy[0]])){
+ if (MB_FIELD(sl) && !IS_INTERLACED(sl->left_type[0])) {
// left shift will turn LIST_NOT_USED into PART_NOT_AVAILABLE, but that's OK.
- SET_DIAG_MV(/2, <<1, h->left_mb_xy[i>=36], (- 1 + ((i-scan8[0])>>3)*2)&3);
+ SET_DIAG_MV(/ 2, << 1, sl->left_mb_xy[i >= 36], ((i >> 2)) & 3);
}
}
#undef SET_DIAG_MV
}
- if(topright_ref != PART_NOT_AVAILABLE){
- *C= h->mv_cache[list][ i - 8 + part_width ];
+ if (topright_ref != PART_NOT_AVAILABLE) {
+ *C = sl->mv_cache[list][i - 8 + part_width];
return topright_ref;
- }else{
- tprintf(s->avctx, "topright MV not available\n");
+ } else {
+ ff_tlog(h->avctx, "topright MV not available\n");
- *C= h->mv_cache[list][ i - 8 - 1 ];
- return h->ref_cache[list][ i - 8 - 1 ];
+ *C = sl->mv_cache[list][i - 8 - 1];
+ return sl->ref_cache[list][i - 8 - 1];
}
}
/**
- * gets the predicted MV.
+ * Get the predicted MV.
* @param n the block index
* @param part_width the width of the partition (4, 8,16) -> (1, 2, 4)
* @param mx the x component of the predicted motion vector
* @param my the y component of the predicted motion vector
*/
-static inline void pred_motion(H264Context * const h, int n, int part_width, int list, int ref, int * const mx, int * const my){
- const int index8= scan8[n];
- const int top_ref= h->ref_cache[list][ index8 - 8 ];
- const int left_ref= h->ref_cache[list][ index8 - 1 ];
- const int16_t * const A= h->mv_cache[list][ index8 - 1 ];
- const int16_t * const B= h->mv_cache[list][ index8 - 8 ];
- const int16_t * C;
+static av_always_inline void pred_motion(const H264Context *const h,
+ H264SliceContext *sl,
+ int n,
+ int part_width, int list, int ref,
+ int *const mx, int *const my)
+{
+ const int index8 = scan8[n];
+ const int top_ref = sl->ref_cache[list][index8 - 8];
+ const int left_ref = sl->ref_cache[list][index8 - 1];
+ const int16_t *const A = sl->mv_cache[list][index8 - 1];
+ const int16_t *const B = sl->mv_cache[list][index8 - 8];
+ const int16_t *C;
int diagonal_ref, match_count;
- assert(part_width==1 || part_width==2 || part_width==4);
+ assert(part_width == 1 || part_width == 2 || part_width == 4);
/* mv_cache
- B . . A T T T T
- U . . L . . , .
- U . . L . . . .
- U . . L . . , .
- . . . L . . . .
-*/
-
- diagonal_ref= fetch_diagonal_mv(h, &C, index8, list, part_width);
- match_count= (diagonal_ref==ref) + (top_ref==ref) + (left_ref==ref);
- tprintf(h->s.avctx, "pred_motion match_count=%d\n", match_count);
- if(match_count > 1){ //most common
- *mx= mid_pred(A[0], B[0], C[0]);
- *my= mid_pred(A[1], B[1], C[1]);
- }else if(match_count==1){
- if(left_ref==ref){
- *mx= A[0];
- *my= A[1];
- }else if(top_ref==ref){
- *mx= B[0];
- *my= B[1];
- }else{
- *mx= C[0];
- *my= C[1];
- }
- }else{
- if(top_ref == PART_NOT_AVAILABLE && diagonal_ref == PART_NOT_AVAILABLE && left_ref != PART_NOT_AVAILABLE){
- *mx= A[0];
- *my= A[1];
- }else{
- *mx= mid_pred(A[0], B[0], C[0]);
- *my= mid_pred(A[1], B[1], C[1]);
- }
- }
-
- tprintf(h->s.avctx, "pred_motion (%2d %2d %2d) (%2d %2d %2d) (%2d %2d %2d) -> (%2d %2d %2d) at %2d %2d %d list %d\n", top_ref, B[0], B[1], diagonal_ref, C[0], C[1], left_ref, A[0], A[1], ref, *mx, *my, h->s.mb_x, h->s.mb_y, n, list);
+ * B . . A T T T T
+ * U . . L . . , .
+ * U . . L . . . .
+ * U . . L . . , .
+ * . . . L . . . .
+ */
+
+ diagonal_ref = fetch_diagonal_mv(h, sl, &C, index8, list, part_width);
+ match_count = (diagonal_ref == ref) + (top_ref == ref) + (left_ref == ref);
+ ff_tlog(h->avctx, "pred_motion match_count=%d\n", match_count);
+ if (match_count > 1) { //most common
+ *mx = mid_pred(A[0], B[0], C[0]);
+ *my = mid_pred(A[1], B[1], C[1]);
+ } else if (match_count == 1) {
+ if (left_ref == ref) {
+ *mx = A[0];
+ *my = A[1];
+ } else if (top_ref == ref) {
+ *mx = B[0];
+ *my = B[1];
+ } else {
+ *mx = C[0];
+ *my = C[1];
+ }
+ } else {
+ if (top_ref == PART_NOT_AVAILABLE &&
+ diagonal_ref == PART_NOT_AVAILABLE &&
+ left_ref != PART_NOT_AVAILABLE) {
+ *mx = A[0];
+ *my = A[1];
+ } else {
+ *mx = mid_pred(A[0], B[0], C[0]);
+ *my = mid_pred(A[1], B[1], C[1]);
+ }
+ }
+
+ ff_tlog(h->avctx,
+ "pred_motion (%2d %2d %2d) (%2d %2d %2d) (%2d %2d %2d) -> (%2d %2d %2d) at %2d %2d %d list %d\n",
+ top_ref, B[0], B[1], diagonal_ref, C[0], C[1], left_ref,
+ A[0], A[1], ref, *mx, *my, sl->mb_x, sl->mb_y, n, list);
}
/**
- * gets the directionally predicted 16x8 MV.
+ * Get the directionally predicted 16x8 MV.
* @param n the block index
* @param mx the x component of the predicted motion vector
* @param my the y component of the predicted motion vector
*/
-static inline void pred_16x8_motion(H264Context * const h, int n, int list, int ref, int * const mx, int * const my){
- if(n==0){
- const int top_ref= h->ref_cache[list][ scan8[0] - 8 ];
- const int16_t * const B= h->mv_cache[list][ scan8[0] - 8 ];
-
- tprintf(h->s.avctx, "pred_16x8: (%2d %2d %2d) at %2d %2d %d list %d\n", top_ref, B[0], B[1], h->s.mb_x, h->s.mb_y, n, list);
-
- if(top_ref == ref){
- *mx= B[0];
- *my= B[1];
+static av_always_inline void pred_16x8_motion(const H264Context *const h,
+ H264SliceContext *sl,
+ int n, int list, int ref,
+ int *const mx, int *const my)
+{
+ if (n == 0) {
+ const int top_ref = sl->ref_cache[list][scan8[0] - 8];
+ const int16_t *const B = sl->mv_cache[list][scan8[0] - 8];
+
+ ff_tlog(h->avctx, "pred_16x8: (%2d %2d %2d) at %2d %2d %d list %d\n",
+ top_ref, B[0], B[1], sl->mb_x, sl->mb_y, n, list);
+
+ if (top_ref == ref) {
+ *mx = B[0];
+ *my = B[1];
return;
}
- }else{
- const int left_ref= h->ref_cache[list][ scan8[8] - 1 ];
- const int16_t * const A= h->mv_cache[list][ scan8[8] - 1 ];
+ } else {
+ const int left_ref = sl->ref_cache[list][scan8[8] - 1];
+ const int16_t *const A = sl->mv_cache[list][scan8[8] - 1];
- tprintf(h->s.avctx, "pred_16x8: (%2d %2d %2d) at %2d %2d %d list %d\n", left_ref, A[0], A[1], h->s.mb_x, h->s.mb_y, n, list);
+ ff_tlog(h->avctx, "pred_16x8: (%2d %2d %2d) at %2d %2d %d list %d\n",
+ left_ref, A[0], A[1], sl->mb_x, sl->mb_y, n, list);
- if(left_ref == ref){
- *mx= A[0];
- *my= A[1];
+ if (left_ref == ref) {
+ *mx = A[0];
+ *my = A[1];
return;
}
}
//RARE
- pred_motion(h, n, 4, list, ref, mx, my);
+ pred_motion(h, sl, n, 4, list, ref, mx, my);
}
/**
- * gets the directionally predicted 8x16 MV.
+ * Get the directionally predicted 8x16 MV.
* @param n the block index
* @param mx the x component of the predicted motion vector
* @param my the y component of the predicted motion vector
*/
-static inline void pred_8x16_motion(H264Context * const h, int n, int list, int ref, int * const mx, int * const my){
- if(n==0){
- const int left_ref= h->ref_cache[list][ scan8[0] - 1 ];
- const int16_t * const A= h->mv_cache[list][ scan8[0] - 1 ];
-
- tprintf(h->s.avctx, "pred_8x16: (%2d %2d %2d) at %2d %2d %d list %d\n", left_ref, A[0], A[1], h->s.mb_x, h->s.mb_y, n, list);
-
- if(left_ref == ref){
- *mx= A[0];
- *my= A[1];
+static av_always_inline void pred_8x16_motion(const H264Context *const h,
+ H264SliceContext *sl,
+ int n, int list, int ref,
+ int *const mx, int *const my)
+{
+ if (n == 0) {
+ const int left_ref = sl->ref_cache[list][scan8[0] - 1];
+ const int16_t *const A = sl->mv_cache[list][scan8[0] - 1];
+
+ ff_tlog(h->avctx, "pred_8x16: (%2d %2d %2d) at %2d %2d %d list %d\n",
+ left_ref, A[0], A[1], sl->mb_x, sl->mb_y, n, list);
+
+ if (left_ref == ref) {
+ *mx = A[0];
+ *my = A[1];
return;
}
- }else{
- const int16_t * C;
+ } else {
+ const int16_t *C;
int diagonal_ref;
- diagonal_ref= fetch_diagonal_mv(h, &C, scan8[4], list, 2);
+ diagonal_ref = fetch_diagonal_mv(h, sl, &C, scan8[4], list, 2);
- tprintf(h->s.avctx, "pred_8x16: (%2d %2d %2d) at %2d %2d %d list %d\n", diagonal_ref, C[0], C[1], h->s.mb_x, h->s.mb_y, n, list);
+ ff_tlog(h->avctx, "pred_8x16: (%2d %2d %2d) at %2d %2d %d list %d\n",
+ diagonal_ref, C[0], C[1], sl->mb_x, sl->mb_y, n, list);
- if(diagonal_ref == ref){
- *mx= C[0];
- *my= C[1];
+ if (diagonal_ref == ref) {
+ *mx = C[0];
+ *my = C[1];
return;
}
}
//RARE
- pred_motion(h, n, 2, list, ref, mx, my);
+ pred_motion(h, sl, n, 2, list, ref, mx, my);
}
-static inline void pred_pskip_motion(H264Context * const h, int * const mx, int * const my){
- const int top_ref = h->ref_cache[0][ scan8[0] - 8 ];
- const int left_ref= h->ref_cache[0][ scan8[0] - 1 ];
+#define FIX_MV_MBAFF(type, refn, mvn, idx) \
+ if (FRAME_MBAFF(h)) { \
+ if (MB_FIELD(sl)) { \
+ if (!IS_INTERLACED(type)) { \
+ refn <<= 1; \
+ AV_COPY32(mvbuf[idx], mvn); \
+ mvbuf[idx][1] /= 2; \
+ mvn = mvbuf[idx]; \
+ } \
+ } else { \
+ if (IS_INTERLACED(type)) { \
+ refn >>= 1; \
+ AV_COPY32(mvbuf[idx], mvn); \
+ mvbuf[idx][1] <<= 1; \
+ mvn = mvbuf[idx]; \
+ } \
+ } \
+ }
- tprintf(h->s.avctx, "pred_pskip: (%d) (%d) at %2d %2d\n", top_ref, left_ref, h->s.mb_x, h->s.mb_y);
+static av_always_inline void pred_pskip_motion(const H264Context *const h,
+ H264SliceContext *sl)
+{
+ DECLARE_ALIGNED(4, static const int16_t, zeromv)[2] = { 0 };
+ DECLARE_ALIGNED(4, int16_t, mvbuf)[3][2];
+ int8_t *ref = h->cur_pic.ref_index[0];
+ int16_t(*mv)[2] = h->cur_pic.motion_val[0];
+ int top_ref, left_ref, diagonal_ref, match_count, mx, my;
+ const int16_t *A, *B, *C;
+ int b_stride = h->b_stride;
+
+ fill_rectangle(&sl->ref_cache[0][scan8[0]], 4, 4, 8, 0, 1);
+
+ /* To avoid doing an entire fill_decode_caches, we inline the relevant
+ * parts here.
+ * FIXME: this is a partial duplicate of the logic in fill_decode_caches,
+ * but it's faster this way. Is there a way to avoid this duplication?
+ */
+ if (USES_LIST(sl->left_type[LTOP], 0)) {
+ left_ref = ref[4 * sl->left_mb_xy[LTOP] + 1 + (sl->left_block[0] & ~1)];
+ A = mv[h->mb2b_xy[sl->left_mb_xy[LTOP]] + 3 + b_stride * sl->left_block[0]];
+ FIX_MV_MBAFF(sl->left_type[LTOP], left_ref, A, 0);
+ if (!(left_ref | AV_RN32A(A)))
+ goto zeromv;
+ } else if (sl->left_type[LTOP]) {
+ left_ref = LIST_NOT_USED;
+ A = zeromv;
+ } else {
+ goto zeromv;
+ }
- if(top_ref == PART_NOT_AVAILABLE || left_ref == PART_NOT_AVAILABLE
- || !( top_ref | AV_RN32A(h->mv_cache[0][ scan8[0] - 8 ]))
- || !(left_ref | AV_RN32A(h->mv_cache[0][ scan8[0] - 1 ]))){
+ if (USES_LIST(sl->top_type, 0)) {
+ top_ref = ref[4 * sl->top_mb_xy + 2];
+ B = mv[h->mb2b_xy[sl->top_mb_xy] + 3 * b_stride];
+ FIX_MV_MBAFF(sl->top_type, top_ref, B, 1);
+ if (!(top_ref | AV_RN32A(B)))
+ goto zeromv;
+ } else if (sl->top_type) {
+ top_ref = LIST_NOT_USED;
+ B = zeromv;
+ } else {
+ goto zeromv;
+ }
- *mx = *my = 0;
- return;
+ ff_tlog(h->avctx, "pred_pskip: (%d) (%d) at %2d %2d\n",
+ top_ref, left_ref, sl->mb_x, sl->mb_y);
+
+ if (USES_LIST(sl->topright_type, 0)) {
+ diagonal_ref = ref[4 * sl->topright_mb_xy + 2];
+ C = mv[h->mb2b_xy[sl->topright_mb_xy] + 3 * b_stride];
+ FIX_MV_MBAFF(sl->topright_type, diagonal_ref, C, 2);
+ } else if (sl->topright_type) {
+ diagonal_ref = LIST_NOT_USED;
+ C = zeromv;
+ } else {
+ if (USES_LIST(sl->topleft_type, 0)) {
+ diagonal_ref = ref[4 * sl->topleft_mb_xy + 1 +
+ (sl->topleft_partition & 2)];
+ C = mv[h->mb2b_xy[sl->topleft_mb_xy] + 3 + b_stride +
+ (sl->topleft_partition & 2 * b_stride)];
+ FIX_MV_MBAFF(sl->topleft_type, diagonal_ref, C, 2);
+ } else if (sl->topleft_type) {
+ diagonal_ref = LIST_NOT_USED;
+ C = zeromv;
+ } else {
+ diagonal_ref = PART_NOT_AVAILABLE;
+ C = zeromv;
+ }
}
- pred_motion(h, 0, 4, 0, 0, mx, my);
+ match_count = !diagonal_ref + !top_ref + !left_ref;
+ ff_tlog(h->avctx, "pred_pskip_motion match_count=%d\n", match_count);
+ if (match_count > 1) {
+ mx = mid_pred(A[0], B[0], C[0]);
+ my = mid_pred(A[1], B[1], C[1]);
+ } else if (match_count == 1) {
+ if (!left_ref) {
+ mx = A[0];
+ my = A[1];
+ } else if (!top_ref) {
+ mx = B[0];
+ my = B[1];
+ } else {
+ mx = C[0];
+ my = C[1];
+ }
+ } else {
+ mx = mid_pred(A[0], B[0], C[0]);
+ my = mid_pred(A[1], B[1], C[1]);
+ }
+
+ fill_rectangle(sl->mv_cache[0][scan8[0]], 4, 4, 8, pack16to32(mx, my), 4);
+ return;
+zeromv:
+ fill_rectangle(sl->mv_cache[0][scan8[0]], 4, 4, 8, 0, 4);
return;
}
+static void fill_decode_neighbors(const H264Context *h, H264SliceContext *sl, int mb_type)
+{
+ const int mb_xy = sl->mb_xy;
+ int topleft_xy, top_xy, topright_xy, left_xy[LEFT_MBS];
+ static const uint8_t left_block_options[4][32] = {
+ { 0, 1, 2, 3, 7, 10, 8, 11, 3 + 0 * 4, 3 + 1 * 4, 3 + 2 * 4, 3 + 3 * 4, 1 + 4 * 4, 1 + 8 * 4, 1 + 5 * 4, 1 + 9 * 4 },
+ { 2, 2, 3, 3, 8, 11, 8, 11, 3 + 2 * 4, 3 + 2 * 4, 3 + 3 * 4, 3 + 3 * 4, 1 + 5 * 4, 1 + 9 * 4, 1 + 5 * 4, 1 + 9 * 4 },
+ { 0, 0, 1, 1, 7, 10, 7, 10, 3 + 0 * 4, 3 + 0 * 4, 3 + 1 * 4, 3 + 1 * 4, 1 + 4 * 4, 1 + 8 * 4, 1 + 4 * 4, 1 + 8 * 4 },
+ { 0, 2, 0, 2, 7, 10, 7, 10, 3 + 0 * 4, 3 + 2 * 4, 3 + 0 * 4, 3 + 2 * 4, 1 + 4 * 4, 1 + 8 * 4, 1 + 4 * 4, 1 + 8 * 4 }
+ };
+
+ sl->topleft_partition = -1;
+
+ top_xy = mb_xy - (h->mb_stride << MB_FIELD(sl));
+
+ /* Wow, what a mess, why didn't they simplify the interlacing & intra
+ * stuff, I can't imagine that these complex rules are worth it. */
+
+ topleft_xy = top_xy - 1;
+ topright_xy = top_xy + 1;
+ left_xy[LBOT] = left_xy[LTOP] = mb_xy - 1;
+ sl->left_block = left_block_options[0];
+ if (FRAME_MBAFF(h)) {
+ const int left_mb_field_flag = IS_INTERLACED(h->cur_pic.mb_type[mb_xy - 1]);
+ const int curr_mb_field_flag = IS_INTERLACED(mb_type);
+ if (sl->mb_y & 1) {
+ if (left_mb_field_flag != curr_mb_field_flag) {
+ left_xy[LBOT] = left_xy[LTOP] = mb_xy - h->mb_stride - 1;
+ if (curr_mb_field_flag) {
+ left_xy[LBOT] += h->mb_stride;
+ sl->left_block = left_block_options[3];
+ } else {
+ topleft_xy += h->mb_stride;
+ /* take top left mv from the middle of the mb, as opposed
+ * to all other modes which use the bottom right partition */
+ sl->topleft_partition = 0;
+ sl->left_block = left_block_options[1];
+ }
+ }
+ } else {
+ if (curr_mb_field_flag) {
+ topleft_xy += h->mb_stride & (((h->cur_pic.mb_type[top_xy - 1] >> 7) & 1) - 1);
+ topright_xy += h->mb_stride & (((h->cur_pic.mb_type[top_xy + 1] >> 7) & 1) - 1);
+ top_xy += h->mb_stride & (((h->cur_pic.mb_type[top_xy] >> 7) & 1) - 1);
+ }
+ if (left_mb_field_flag != curr_mb_field_flag) {
+ if (curr_mb_field_flag) {
+ left_xy[LBOT] += h->mb_stride;
+ sl->left_block = left_block_options[3];
+ } else {
+ sl->left_block = left_block_options[2];
+ }
+ }
+ }
+ }
+
+ sl->topleft_mb_xy = topleft_xy;
+ sl->top_mb_xy = top_xy;
+ sl->topright_mb_xy = topright_xy;
+ sl->left_mb_xy[LTOP] = left_xy[LTOP];
+ sl->left_mb_xy[LBOT] = left_xy[LBOT];
+ //FIXME do we need all in the context?
+
+ sl->topleft_type = h->cur_pic.mb_type[topleft_xy];
+ sl->top_type = h->cur_pic.mb_type[top_xy];
+ sl->topright_type = h->cur_pic.mb_type[topright_xy];
+ sl->left_type[LTOP] = h->cur_pic.mb_type[left_xy[LTOP]];
+ sl->left_type[LBOT] = h->cur_pic.mb_type[left_xy[LBOT]];
+
+ if (FMO) {
+ if (h->slice_table[topleft_xy] != sl->slice_num)
+ sl->topleft_type = 0;
+ if (h->slice_table[top_xy] != sl->slice_num)
+ sl->top_type = 0;
+ if (h->slice_table[left_xy[LTOP]] != sl->slice_num)
+ sl->left_type[LTOP] = sl->left_type[LBOT] = 0;
+ } else {
+ if (h->slice_table[topleft_xy] != sl->slice_num) {
+ sl->topleft_type = 0;
+ if (h->slice_table[top_xy] != sl->slice_num)
+ sl->top_type = 0;
+ if (h->slice_table[left_xy[LTOP]] != sl->slice_num)
+ sl->left_type[LTOP] = sl->left_type[LBOT] = 0;
+ }
+ }
+ if (h->slice_table[topright_xy] != sl->slice_num)
+ sl->topright_type = 0;
+}
+
+static void fill_decode_caches(const H264Context *h, H264SliceContext *sl, int mb_type)
+{
+ int topleft_xy, top_xy, topright_xy, left_xy[LEFT_MBS];
+ int topleft_type, top_type, topright_type, left_type[LEFT_MBS];
+ const uint8_t *left_block = sl->left_block;
+ int i;
+ uint8_t *nnz;
+ uint8_t *nnz_cache;
+
+ topleft_xy = sl->topleft_mb_xy;
+ top_xy = sl->top_mb_xy;
+ topright_xy = sl->topright_mb_xy;
+ left_xy[LTOP] = sl->left_mb_xy[LTOP];
+ left_xy[LBOT] = sl->left_mb_xy[LBOT];
+ topleft_type = sl->topleft_type;
+ top_type = sl->top_type;
+ topright_type = sl->topright_type;
+ left_type[LTOP] = sl->left_type[LTOP];
+ left_type[LBOT] = sl->left_type[LBOT];
+
+ if (!IS_SKIP(mb_type)) {
+ if (IS_INTRA(mb_type)) {
+ int type_mask = h->pps.constrained_intra_pred ? IS_INTRA(-1) : -1;
+ sl->topleft_samples_available =
+ sl->top_samples_available =
+ sl->left_samples_available = 0xFFFF;
+ sl->topright_samples_available = 0xEEEA;
+
+ if (!(top_type & type_mask)) {
+ sl->topleft_samples_available = 0xB3FF;
+ sl->top_samples_available = 0x33FF;
+ sl->topright_samples_available = 0x26EA;
+ }
+ if (IS_INTERLACED(mb_type) != IS_INTERLACED(left_type[LTOP])) {
+ if (IS_INTERLACED(mb_type)) {
+ if (!(left_type[LTOP] & type_mask)) {
+ sl->topleft_samples_available &= 0xDFFF;
+ sl->left_samples_available &= 0x5FFF;
+ }
+ if (!(left_type[LBOT] & type_mask)) {
+ sl->topleft_samples_available &= 0xFF5F;
+ sl->left_samples_available &= 0xFF5F;
+ }
+ } else {
+ int left_typei = h->cur_pic.mb_type[left_xy[LTOP] + h->mb_stride];
+
+ assert(left_xy[LTOP] == left_xy[LBOT]);
+ if (!((left_typei & type_mask) && (left_type[LTOP] & type_mask))) {
+ sl->topleft_samples_available &= 0xDF5F;
+ sl->left_samples_available &= 0x5F5F;
+ }
+ }
+ } else {
+ if (!(left_type[LTOP] & type_mask)) {
+ sl->topleft_samples_available &= 0xDF5F;
+ sl->left_samples_available &= 0x5F5F;
+ }
+ }
+
+ if (!(topleft_type & type_mask))
+ sl->topleft_samples_available &= 0x7FFF;
+
+ if (!(topright_type & type_mask))
+ sl->topright_samples_available &= 0xFBFF;
+
+ if (IS_INTRA4x4(mb_type)) {
+ if (IS_INTRA4x4(top_type)) {
+ AV_COPY32(sl->intra4x4_pred_mode_cache + 4 + 8 * 0, sl->intra4x4_pred_mode + h->mb2br_xy[top_xy]);
+ } else {
+ sl->intra4x4_pred_mode_cache[4 + 8 * 0] =
+ sl->intra4x4_pred_mode_cache[5 + 8 * 0] =
+ sl->intra4x4_pred_mode_cache[6 + 8 * 0] =
+ sl->intra4x4_pred_mode_cache[7 + 8 * 0] = 2 - 3 * !(top_type & type_mask);
+ }
+ for (i = 0; i < 2; i++) {
+ if (IS_INTRA4x4(left_type[LEFT(i)])) {
+ int8_t *mode = sl->intra4x4_pred_mode + h->mb2br_xy[left_xy[LEFT(i)]];
+ sl->intra4x4_pred_mode_cache[3 + 8 * 1 + 2 * 8 * i] = mode[6 - left_block[0 + 2 * i]];
+ sl->intra4x4_pred_mode_cache[3 + 8 * 2 + 2 * 8 * i] = mode[6 - left_block[1 + 2 * i]];
+ } else {
+ sl->intra4x4_pred_mode_cache[3 + 8 * 1 + 2 * 8 * i] =
+ sl->intra4x4_pred_mode_cache[3 + 8 * 2 + 2 * 8 * i] = 2 - 3 * !(left_type[LEFT(i)] & type_mask);
+ }
+ }
+ }
+ }
+
+ /*
+ * 0 . T T. T T T T
+ * 1 L . .L . . . .
+ * 2 L . .L . . . .
+ * 3 . T TL . . . .
+ * 4 L . .L . . . .
+ * 5 L . .. . . . .
+ */
+ /* FIXME: constraint_intra_pred & partitioning & nnz
+ * (let us hope this is just a typo in the spec) */
+ nnz_cache = sl->non_zero_count_cache;
+ if (top_type) {
+ nnz = h->non_zero_count[top_xy];
+ AV_COPY32(&nnz_cache[4 + 8 * 0], &nnz[4 * 3]);
+ if (!h->chroma_y_shift) {
+ AV_COPY32(&nnz_cache[4 + 8 * 5], &nnz[4 * 7]);
+ AV_COPY32(&nnz_cache[4 + 8 * 10], &nnz[4 * 11]);
+ } else {
+ AV_COPY32(&nnz_cache[4 + 8 * 5], &nnz[4 * 5]);
+ AV_COPY32(&nnz_cache[4 + 8 * 10], &nnz[4 * 9]);
+ }
+ } else {
+ uint32_t top_empty = CABAC(h) && !IS_INTRA(mb_type) ? 0 : 0x40404040;
+ AV_WN32A(&nnz_cache[4 + 8 * 0], top_empty);
+ AV_WN32A(&nnz_cache[4 + 8 * 5], top_empty);
+ AV_WN32A(&nnz_cache[4 + 8 * 10], top_empty);
+ }
+
+ for (i = 0; i < 2; i++) {
+ if (left_type[LEFT(i)]) {
+ nnz = h->non_zero_count[left_xy[LEFT(i)]];
+ nnz_cache[3 + 8 * 1 + 2 * 8 * i] = nnz[left_block[8 + 0 + 2 * i]];
+ nnz_cache[3 + 8 * 2 + 2 * 8 * i] = nnz[left_block[8 + 1 + 2 * i]];
+ if (CHROMA444(h)) {
+ nnz_cache[3 + 8 * 6 + 2 * 8 * i] = nnz[left_block[8 + 0 + 2 * i] + 4 * 4];
+ nnz_cache[3 + 8 * 7 + 2 * 8 * i] = nnz[left_block[8 + 1 + 2 * i] + 4 * 4];
+ nnz_cache[3 + 8 * 11 + 2 * 8 * i] = nnz[left_block[8 + 0 + 2 * i] + 8 * 4];
+ nnz_cache[3 + 8 * 12 + 2 * 8 * i] = nnz[left_block[8 + 1 + 2 * i] + 8 * 4];
+ } else if (CHROMA422(h)) {
+ nnz_cache[3 + 8 * 6 + 2 * 8 * i] = nnz[left_block[8 + 0 + 2 * i] - 2 + 4 * 4];
+ nnz_cache[3 + 8 * 7 + 2 * 8 * i] = nnz[left_block[8 + 1 + 2 * i] - 2 + 4 * 4];
+ nnz_cache[3 + 8 * 11 + 2 * 8 * i] = nnz[left_block[8 + 0 + 2 * i] - 2 + 8 * 4];
+ nnz_cache[3 + 8 * 12 + 2 * 8 * i] = nnz[left_block[8 + 1 + 2 * i] - 2 + 8 * 4];
+ } else {
+ nnz_cache[3 + 8 * 6 + 8 * i] = nnz[left_block[8 + 4 + 2 * i]];
+ nnz_cache[3 + 8 * 11 + 8 * i] = nnz[left_block[8 + 5 + 2 * i]];
+ }
+ } else {
+ nnz_cache[3 + 8 * 1 + 2 * 8 * i] =
+ nnz_cache[3 + 8 * 2 + 2 * 8 * i] =
+ nnz_cache[3 + 8 * 6 + 2 * 8 * i] =
+ nnz_cache[3 + 8 * 7 + 2 * 8 * i] =
+ nnz_cache[3 + 8 * 11 + 2 * 8 * i] =
+ nnz_cache[3 + 8 * 12 + 2 * 8 * i] = CABAC(h) && !IS_INTRA(mb_type) ? 0 : 64;
+ }
+ }
+
+ if (CABAC(h)) {
+ // top_cbp
+ if (top_type)
+ sl->top_cbp = h->cbp_table[top_xy];
+ else
+ sl->top_cbp = IS_INTRA(mb_type) ? 0x7CF : 0x00F;
+ // left_cbp
+ if (left_type[LTOP]) {
+ sl->left_cbp = (h->cbp_table[left_xy[LTOP]] & 0x7F0) |
+ ((h->cbp_table[left_xy[LTOP]] >> (left_block[0] & (~1))) & 2) |
+ (((h->cbp_table[left_xy[LBOT]] >> (left_block[2] & (~1))) & 2) << 2);
+ } else {
+ sl->left_cbp = IS_INTRA(mb_type) ? 0x7CF : 0x00F;
+ }
+ }
+ }
+
+ if (IS_INTER(mb_type) || (IS_DIRECT(mb_type) && sl->direct_spatial_mv_pred)) {
+ int list;
+ int b_stride = h->b_stride;
+ for (list = 0; list < sl->list_count; list++) {
+ int8_t *ref_cache = &sl->ref_cache[list][scan8[0]];
+ int8_t *ref = h->cur_pic.ref_index[list];
+ int16_t(*mv_cache)[2] = &sl->mv_cache[list][scan8[0]];
+ int16_t(*mv)[2] = h->cur_pic.motion_val[list];
+ if (!USES_LIST(mb_type, list))
+ continue;
+ assert(!(IS_DIRECT(mb_type) && !sl->direct_spatial_mv_pred));
+
+ if (USES_LIST(top_type, list)) {
+ const int b_xy = h->mb2b_xy[top_xy] + 3 * b_stride;
+ AV_COPY128(mv_cache[0 - 1 * 8], mv[b_xy + 0]);
+ ref_cache[0 - 1 * 8] =
+ ref_cache[1 - 1 * 8] = ref[4 * top_xy + 2];
+ ref_cache[2 - 1 * 8] =
+ ref_cache[3 - 1 * 8] = ref[4 * top_xy + 3];
+ } else {
+ AV_ZERO128(mv_cache[0 - 1 * 8]);
+ AV_WN32A(&ref_cache[0 - 1 * 8],
+ ((top_type ? LIST_NOT_USED : PART_NOT_AVAILABLE) & 0xFF) * 0x01010101u);
+ }
+
+ if (mb_type & (MB_TYPE_16x8 | MB_TYPE_8x8)) {
+ for (i = 0; i < 2; i++) {
+ int cache_idx = -1 + i * 2 * 8;
+ if (USES_LIST(left_type[LEFT(i)], list)) {
+ const int b_xy = h->mb2b_xy[left_xy[LEFT(i)]] + 3;
+ const int b8_xy = 4 * left_xy[LEFT(i)] + 1;
+ AV_COPY32(mv_cache[cache_idx],
+ mv[b_xy + b_stride * left_block[0 + i * 2]]);
+ AV_COPY32(mv_cache[cache_idx + 8],
+ mv[b_xy + b_stride * left_block[1 + i * 2]]);
+ ref_cache[cache_idx] = ref[b8_xy + (left_block[0 + i * 2] & ~1)];
+ ref_cache[cache_idx + 8] = ref[b8_xy + (left_block[1 + i * 2] & ~1)];
+ } else {
+ AV_ZERO32(mv_cache[cache_idx]);
+ AV_ZERO32(mv_cache[cache_idx + 8]);
+ ref_cache[cache_idx] =
+ ref_cache[cache_idx + 8] = (left_type[LEFT(i)]) ? LIST_NOT_USED
+ : PART_NOT_AVAILABLE;
+ }
+ }
+ } else {
+ if (USES_LIST(left_type[LTOP], list)) {
+ const int b_xy = h->mb2b_xy[left_xy[LTOP]] + 3;
+ const int b8_xy = 4 * left_xy[LTOP] + 1;
+ AV_COPY32(mv_cache[-1], mv[b_xy + b_stride * left_block[0]]);
+ ref_cache[-1] = ref[b8_xy + (left_block[0] & ~1)];
+ } else {
+ AV_ZERO32(mv_cache[-1]);
+ ref_cache[-1] = left_type[LTOP] ? LIST_NOT_USED
+ : PART_NOT_AVAILABLE;
+ }
+ }
+
+ if (USES_LIST(topright_type, list)) {
+ const int b_xy = h->mb2b_xy[topright_xy] + 3 * b_stride;
+ AV_COPY32(mv_cache[4 - 1 * 8], mv[b_xy]);
+ ref_cache[4 - 1 * 8] = ref[4 * topright_xy + 2];
+ } else {
+ AV_ZERO32(mv_cache[4 - 1 * 8]);
+ ref_cache[4 - 1 * 8] = topright_type ? LIST_NOT_USED
+ : PART_NOT_AVAILABLE;
+ }
+ if (ref_cache[4 - 1 * 8] < 0) {
+ if (USES_LIST(topleft_type, list)) {
+ const int b_xy = h->mb2b_xy[topleft_xy] + 3 + b_stride +
+ (sl->topleft_partition & 2 * b_stride);
+ const int b8_xy = 4 * topleft_xy + 1 + (sl->topleft_partition & 2);
+ AV_COPY32(mv_cache[-1 - 1 * 8], mv[b_xy]);
+ ref_cache[-1 - 1 * 8] = ref[b8_xy];
+ } else {
+ AV_ZERO32(mv_cache[-1 - 1 * 8]);
+ ref_cache[-1 - 1 * 8] = topleft_type ? LIST_NOT_USED
+ : PART_NOT_AVAILABLE;
+ }
+ }
+
+ if ((mb_type & (MB_TYPE_SKIP | MB_TYPE_DIRECT2)) && !FRAME_MBAFF(h))
+ continue;
+
+ if (!(mb_type & (MB_TYPE_SKIP | MB_TYPE_DIRECT2))) {
+ uint8_t(*mvd_cache)[2] = &sl->mvd_cache[list][scan8[0]];
+ uint8_t(*mvd)[2] = sl->mvd_table[list];
+ ref_cache[2 + 8 * 0] =
+ ref_cache[2 + 8 * 2] = PART_NOT_AVAILABLE;
+ AV_ZERO32(mv_cache[2 + 8 * 0]);
+ AV_ZERO32(mv_cache[2 + 8 * 2]);
+
+ if (CABAC(h)) {
+ if (USES_LIST(top_type, list)) {
+ const int b_xy = h->mb2br_xy[top_xy];
+ AV_COPY64(mvd_cache[0 - 1 * 8], mvd[b_xy + 0]);
+ } else {
+ AV_ZERO64(mvd_cache[0 - 1 * 8]);
+ }
+ if (USES_LIST(left_type[LTOP], list)) {
+ const int b_xy = h->mb2br_xy[left_xy[LTOP]] + 6;
+ AV_COPY16(mvd_cache[-1 + 0 * 8], mvd[b_xy - left_block[0]]);
+ AV_COPY16(mvd_cache[-1 + 1 * 8], mvd[b_xy - left_block[1]]);
+ } else {
+ AV_ZERO16(mvd_cache[-1 + 0 * 8]);
+ AV_ZERO16(mvd_cache[-1 + 1 * 8]);
+ }
+ if (USES_LIST(left_type[LBOT], list)) {
+ const int b_xy = h->mb2br_xy[left_xy[LBOT]] + 6;
+ AV_COPY16(mvd_cache[-1 + 2 * 8], mvd[b_xy - left_block[2]]);
+ AV_COPY16(mvd_cache[-1 + 3 * 8], mvd[b_xy - left_block[3]]);
+ } else {
+ AV_ZERO16(mvd_cache[-1 + 2 * 8]);
+ AV_ZERO16(mvd_cache[-1 + 3 * 8]);
+ }
+ AV_ZERO16(mvd_cache[2 + 8 * 0]);
+ AV_ZERO16(mvd_cache[2 + 8 * 2]);
+ if (sl->slice_type_nos == AV_PICTURE_TYPE_B) {
+ uint8_t *direct_cache = &sl->direct_cache[scan8[0]];
+ uint8_t *direct_table = h->direct_table;
+ fill_rectangle(direct_cache, 4, 4, 8, MB_TYPE_16x16 >> 1, 1);
+
+ if (IS_DIRECT(top_type)) {
+ AV_WN32A(&direct_cache[-1 * 8],
+ 0x01010101u * (MB_TYPE_DIRECT2 >> 1));
+ } else if (IS_8X8(top_type)) {
+ int b8_xy = 4 * top_xy;
+ direct_cache[0 - 1 * 8] = direct_table[b8_xy + 2];
+ direct_cache[2 - 1 * 8] = direct_table[b8_xy + 3];
+ } else {
+ AV_WN32A(&direct_cache[-1 * 8],
+ 0x01010101 * (MB_TYPE_16x16 >> 1));
+ }
+
+ if (IS_DIRECT(left_type[LTOP]))
+ direct_cache[-1 + 0 * 8] = MB_TYPE_DIRECT2 >> 1;
+ else if (IS_8X8(left_type[LTOP]))
+ direct_cache[-1 + 0 * 8] = direct_table[4 * left_xy[LTOP] + 1 + (left_block[0] & ~1)];
+ else
+ direct_cache[-1 + 0 * 8] = MB_TYPE_16x16 >> 1;
+
+ if (IS_DIRECT(left_type[LBOT]))
+ direct_cache[-1 + 2 * 8] = MB_TYPE_DIRECT2 >> 1;
+ else if (IS_8X8(left_type[LBOT]))
+ direct_cache[-1 + 2 * 8] = direct_table[4 * left_xy[LBOT] + 1 + (left_block[2] & ~1)];
+ else
+ direct_cache[-1 + 2 * 8] = MB_TYPE_16x16 >> 1;
+ }
+ }
+ }
+
+#define MAP_MVS \
+ MAP_F2F(scan8[0] - 1 - 1 * 8, topleft_type) \
+ MAP_F2F(scan8[0] + 0 - 1 * 8, top_type) \
+ MAP_F2F(scan8[0] + 1 - 1 * 8, top_type) \
+ MAP_F2F(scan8[0] + 2 - 1 * 8, top_type) \
+ MAP_F2F(scan8[0] + 3 - 1 * 8, top_type) \
+ MAP_F2F(scan8[0] + 4 - 1 * 8, topright_type) \
+ MAP_F2F(scan8[0] - 1 + 0 * 8, left_type[LTOP]) \
+ MAP_F2F(scan8[0] - 1 + 1 * 8, left_type[LTOP]) \
+ MAP_F2F(scan8[0] - 1 + 2 * 8, left_type[LBOT]) \
+ MAP_F2F(scan8[0] - 1 + 3 * 8, left_type[LBOT])
+
+ if (FRAME_MBAFF(h)) {
+ if (MB_FIELD(sl)) {
+
+#define MAP_F2F(idx, mb_type) \
+ if (!IS_INTERLACED(mb_type) && sl->ref_cache[list][idx] >= 0) { \
+ sl->ref_cache[list][idx] <<= 1; \
+ sl->mv_cache[list][idx][1] /= 2; \
+ sl->mvd_cache[list][idx][1] >>= 1; \
+ }
+
+ MAP_MVS
+ } else {
+
+#undef MAP_F2F
+#define MAP_F2F(idx, mb_type) \
+ if (IS_INTERLACED(mb_type) && sl->ref_cache[list][idx] >= 0) { \
+ sl->ref_cache[list][idx] >>= 1; \
+ sl->mv_cache[list][idx][1] <<= 1; \
+ sl->mvd_cache[list][idx][1] <<= 1; \
+ }
+
+ MAP_MVS
+#undef MAP_F2F
+ }
+ }
+ }
+ }
+
+ sl->neighbor_transform_size = !!IS_8x8DCT(top_type) + !!IS_8x8DCT(left_type[LTOP]);
+}
+
+/**
+ * decodes a P_SKIP or B_SKIP macroblock
+ */
+static void av_unused decode_mb_skip(const H264Context *h, H264SliceContext *sl)
+{
+ const int mb_xy = sl->mb_xy;
+ int mb_type = 0;
+
+ memset(h->non_zero_count[mb_xy], 0, 48);
+
+ if (MB_FIELD(sl))
+ mb_type |= MB_TYPE_INTERLACED;
+
+ if (sl->slice_type_nos == AV_PICTURE_TYPE_B) {
+ // just for fill_caches. pred_direct_motion will set the real mb_type
+ mb_type |= MB_TYPE_L0L1 | MB_TYPE_DIRECT2 | MB_TYPE_SKIP;
+ if (sl->direct_spatial_mv_pred) {
+ fill_decode_neighbors(h, sl, mb_type);
+ fill_decode_caches(h, sl, mb_type); //FIXME check what is needed and what not ...
+ }
+ ff_h264_pred_direct_motion(h, sl, &mb_type);
+ mb_type |= MB_TYPE_SKIP;
+ } else {
+ mb_type |= MB_TYPE_16x16 | MB_TYPE_P0L0 | MB_TYPE_P1L0 | MB_TYPE_SKIP;
+
+ fill_decode_neighbors(h, sl, mb_type);
+ pred_pskip_motion(h, sl);
+ }
+
+ write_back_motion(h, sl, mb_type);
+ h->cur_pic.mb_type[mb_xy] = mb_type;
+ h->cur_pic.qscale_table[mb_xy] = sl->qscale;
+ h->slice_table[mb_xy] = sl->slice_num;
+ sl->prev_mb_skipped = 1;
+}
+
#endif /* AVCODEC_H264_MVPRED_H */
projects / ffmpeg / blobdiff