diff options
Diffstat (limited to 'vp8/common/reconintra.c')
| -rw-r--r-- | vp8/common/reconintra.c | 190 |
1 files changed, 184 insertions, 6 deletions
diff --git a/vp8/common/reconintra.c b/vp8/common/reconintra.c index 9cf5f6a88..52ef050dc 100644 --- a/vp8/common/reconintra.c +++ b/vp8/common/reconintra.c @@ -70,11 +70,7 @@ void vp8_build_intra_predictors_mby(MACROBLOCKD *x) { average += yleft_col[i]; } - } - - - shift = 3 + x->up_available + x->left_available; expected_dc = (average + (1 << (shift - 1))) >> shift; } @@ -135,6 +131,9 @@ void vp8_build_intra_predictors_mby(MACROBLOCKD *x) } break; +#if CONIFG_I8X8 + case I8X8_PRED: +#endif case B_PRED: case NEARESTMV: case NEARMV: @@ -194,8 +193,6 @@ void vp8_build_intra_predictors_mby_s(MACROBLOCKD *x) } - - shift = 3 + x->up_available + x->left_available; expected_dc = (average + (1 << (shift - 1))) >> shift; } @@ -554,3 +551,184 @@ void vp8_build_intra_predictors_mbuv_s(MACROBLOCKD *x) break; } } +#if CONFIG_I8X8 +void vp8_intra8x8_predict(BLOCKD *x, + int mode, + unsigned char *predictor) +{ + + unsigned char *yabove_row = *(x->base_dst) + x->dst - x->dst_stride; + unsigned char yleft_col[8]; + unsigned char ytop_left = yabove_row[-1]; + int r, c, i; + + for (i = 0; i < 8; i++) + { + yleft_col[i] = (*(x->base_dst))[x->dst - 1 + i * x->dst_stride]; + } + switch (mode) + { + case DC_PRED: + { + int expected_dc = 0; + + for (i = 0; i < 8; i++) + { + expected_dc += yabove_row[i]; + expected_dc += yleft_col[i]; + } + expected_dc = (expected_dc + 8) >> 4; + + for (r = 0; r < 8; r++) + { + for (c = 0; c < 8; c++) + { + predictor[c] = expected_dc; + } + predictor += 16; + } + } + break; + case V_PRED: + { + for (r = 0; r < 8; r++) + { + for (c = 0; c < 8; c++) + { + + predictor[c] = yabove_row[c]; + } + predictor += 16; + } + + } + break; + case H_PRED: + { + + for (r = 0; r < 8; r++) + { + for (c = 0; c < 8; c++) + { + predictor[c] = yleft_col[r]; + } + predictor += 16; + } + } + break; + case TM_PRED: + { + /* prediction similar to true_motion prediction */ + for (r = 0; r < 8; r++) + { + for (c = 0; c < 8; c++) + { + int pred = yabove_row[c] - ytop_left + yleft_col[r]; + if (pred < 0) + pred = 0; + + if (pred > 255) + pred = 255; + predictor[c] = pred; + } + + predictor += 16; + } + } + break; + } +} + +void vp8_intra_uv4x4_predict(BLOCKD *x, + int mode, + unsigned char *predictor) +{ + + unsigned char *above_row = *(x->base_dst) + x->dst - x->dst_stride; + unsigned char left_col[4]; + unsigned char top_left = above_row[-1]; + int r, c, i; + + for (i = 0; i < 4; i++) + { + left_col[i] = (*(x->base_dst))[x->dst - 1 + i * x->dst_stride]; + } + switch (mode) + { + case DC_PRED: + { + int expected_dc = 0; + + for (i = 0; i < 4; i++) + { + expected_dc += above_row[i]; + expected_dc += left_col[i]; + } + expected_dc = (expected_dc + 4) >> 3; + + for (r = 0; r < 4; r++) + { + for (c = 0; c < 4; c++) + { + predictor[c] = expected_dc; + } + predictor += 8; + } + } + break; + case V_PRED: + { + for (r = 0; r < 4; r++) + { + for (c = 0; c < 4; c++) + { + + predictor[c] = above_row[c]; + } + predictor += 8; + } + + } + break; + case H_PRED: + { + + for (r = 0; r < 4; r++) + { + for (c = 0; c < 4; c++) + { + predictor[c] = left_col[r]; + } + predictor += 8; + } + } + break; + case TM_PRED: + { + /* prediction similar to true_motion prediction */ + for (r = 0; r < 4; r++) + { + for (c = 0; c < 4; c++) + { + int pred = above_row[c] - top_left + left_col[r]; + if (pred < 0) + pred = 0; + + if (pred > 255) + pred = 255; + predictor[c] = pred; + } + + predictor += 8; + } + } + break; + } +} + + +/* TODO: try different ways of use Y-UV mode correlation + Current code assumes that a uv 4x4 block use same mode + as corresponding Y 8x8 area + */ +#endif |