| /* |
| * Copyright (c) 2010 The WebM project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #include <limits.h> |
| |
| #include <vpx_mem/vpx_mem.h> |
| #include <vp9/encoder/vp9_encodeintra.h> |
| #include <vp9/encoder/vp9_rdopt.h> |
| #include <vp9/common/vp9_blockd.h> |
| #include <vp9/common/vp9_reconinter.h> |
| #include <vp9/common/vp9_systemdependent.h> |
| #include <vp9/encoder/vp9_segmentation.h> |
| |
| static unsigned int do_16x16_motion_iteration(VP9_COMP *cpi, |
| int_mv *ref_mv, |
| int_mv *dst_mv, |
| int mb_row, |
| int mb_col) { |
| MACROBLOCK *const x = &cpi->mb; |
| MACROBLOCKD *const xd = &x->e_mbd; |
| vp9_variance_fn_ptr_t v_fn_ptr = cpi->fn_ptr[BLOCK_16X16]; |
| unsigned int best_err; |
| |
| const int tmp_col_min = x->mv_col_min; |
| const int tmp_col_max = x->mv_col_max; |
| const int tmp_row_min = x->mv_row_min; |
| const int tmp_row_max = x->mv_row_max; |
| int_mv ref_full; |
| |
| // Further step/diamond searches as necessary |
| int step_param = cpi->sf.first_step + |
| (cpi->speed < 8 ? (cpi->speed > 5 ? 1 : 0) : 2); |
| |
| vp9_clamp_mv_min_max(x, ref_mv); |
| |
| ref_full.as_mv.col = ref_mv->as_mv.col >> 3; |
| ref_full.as_mv.row = ref_mv->as_mv.row >> 3; |
| |
| /*cpi->sf.search_method == HEX*/ |
| best_err = vp9_hex_search(x, &ref_full, dst_mv, step_param, x->errorperbit, |
| &v_fn_ptr, NULL, NULL, NULL, NULL, ref_mv); |
| |
| // Try sub-pixel MC |
| // if (bestsme > error_thresh && bestsme < INT_MAX) |
| { |
| int distortion; |
| unsigned int sse; |
| best_err = cpi->find_fractional_mv_step( |
| x, |
| dst_mv, ref_mv, |
| x->errorperbit, &v_fn_ptr, |
| NULL, NULL, |
| & distortion, &sse); |
| } |
| |
| vp9_set_mbmode_and_mvs(x, NEWMV, dst_mv); |
| vp9_build_inter_predictors_sby(xd, mb_row, mb_col, BLOCK_SIZE_MB16X16); |
| best_err = vp9_sad16x16(x->plane[0].src.buf, x->plane[0].src.stride, |
| xd->plane[0].dst.buf, xd->plane[0].dst.stride, |
| INT_MAX); |
| |
| /* restore UMV window */ |
| x->mv_col_min = tmp_col_min; |
| x->mv_col_max = tmp_col_max; |
| x->mv_row_min = tmp_row_min; |
| x->mv_row_max = tmp_row_max; |
| |
| return best_err; |
| } |
| |
| static int do_16x16_motion_search(VP9_COMP *cpi, |
| int_mv *ref_mv, int_mv *dst_mv, |
| int buf_mb_y_offset, int mb_y_offset, |
| int mb_row, int mb_col) { |
| MACROBLOCK *const x = &cpi->mb; |
| MACROBLOCKD *const xd = &x->e_mbd; |
| unsigned int err, tmp_err; |
| int_mv tmp_mv; |
| |
| // Try zero MV first |
| // FIXME should really use something like near/nearest MV and/or MV prediction |
| err = vp9_sad16x16(x->plane[0].src.buf, x->plane[0].src.stride, |
| xd->plane[0].pre[0].buf, xd->plane[0].pre[0].stride, |
| INT_MAX); |
| dst_mv->as_int = 0; |
| |
| // Test last reference frame using the previous best mv as the |
| // starting point (best reference) for the search |
| tmp_err = do_16x16_motion_iteration(cpi, ref_mv, &tmp_mv, mb_row, mb_col); |
| if (tmp_err < err) { |
| err = tmp_err; |
| dst_mv->as_int = tmp_mv.as_int; |
| } |
| |
| // If the current best reference mv is not centred on 0,0 then do a 0,0 based search as well |
| if (ref_mv->as_int) { |
| unsigned int tmp_err; |
| int_mv zero_ref_mv, tmp_mv; |
| |
| zero_ref_mv.as_int = 0; |
| tmp_err = do_16x16_motion_iteration(cpi, &zero_ref_mv, &tmp_mv, |
| mb_row, mb_col); |
| if (tmp_err < err) { |
| dst_mv->as_int = tmp_mv.as_int; |
| err = tmp_err; |
| } |
| } |
| |
| return err; |
| } |
| |
| static int do_16x16_zerozero_search(VP9_COMP *cpi, |
| int_mv *dst_mv, |
| int buf_mb_y_offset, int mb_y_offset) { |
| MACROBLOCK *const x = &cpi->mb; |
| MACROBLOCKD *const xd = &x->e_mbd; |
| unsigned int err; |
| |
| // Try zero MV first |
| // FIXME should really use something like near/nearest MV and/or MV prediction |
| err = vp9_sad16x16(x->plane[0].src.buf, x->plane[0].src.stride, |
| xd->plane[0].pre[0].buf, xd->plane[0].pre[0].stride, |
| INT_MAX); |
| |
| dst_mv->as_int = 0; |
| |
| return err; |
| } |
| static int find_best_16x16_intra(VP9_COMP *cpi, |
| int mb_y_offset, |
| MB_PREDICTION_MODE *pbest_mode) { |
| MACROBLOCK *const x = &cpi->mb; |
| MACROBLOCKD *const xd = &x->e_mbd; |
| MB_PREDICTION_MODE best_mode = -1, mode; |
| unsigned int best_err = INT_MAX; |
| |
| // calculate SATD for each intra prediction mode; |
| // we're intentionally not doing 4x4, we just want a rough estimate |
| for (mode = DC_PRED; mode <= TM_PRED; mode++) { |
| unsigned int err; |
| const int bwl = b_width_log2(BLOCK_SIZE_MB16X16), bw = 4 << bwl; |
| const int bhl = b_height_log2(BLOCK_SIZE_MB16X16), bh = 4 << bhl; |
| |
| xd->mode_info_context->mbmi.mode = mode; |
| vp9_build_intra_predictors(x->plane[0].src.buf, x->plane[0].src.stride, |
| xd->plane[0].dst.buf, xd->plane[0].dst.stride, |
| xd->mode_info_context->mbmi.mode, |
| bw, bh, |
| xd->up_available, xd->left_available, |
| xd->right_available); |
| err = vp9_sad16x16(x->plane[0].src.buf, x->plane[0].src.stride, |
| xd->plane[0].dst.buf, xd->plane[0].dst.stride, best_err); |
| |
| // find best |
| if (err < best_err) { |
| best_err = err; |
| best_mode = mode; |
| } |
| } |
| |
| if (pbest_mode) |
| *pbest_mode = best_mode; |
| |
| return best_err; |
| } |
| |
| static void update_mbgraph_mb_stats |
| ( |
| VP9_COMP *cpi, |
| MBGRAPH_MB_STATS *stats, |
| YV12_BUFFER_CONFIG *buf, |
| int mb_y_offset, |
| YV12_BUFFER_CONFIG *golden_ref, |
| int_mv *prev_golden_ref_mv, |
| int gld_y_offset, |
| YV12_BUFFER_CONFIG *alt_ref, |
| int_mv *prev_alt_ref_mv, |
| int arf_y_offset, |
| int mb_row, |
| int mb_col |
| ) { |
| MACROBLOCK *const x = &cpi->mb; |
| MACROBLOCKD *const xd = &x->e_mbd; |
| int intra_error; |
| VP9_COMMON *cm = &cpi->common; |
| |
| // FIXME in practice we're completely ignoring chroma here |
| x->plane[0].src.buf = buf->y_buffer + mb_y_offset; |
| x->plane[0].src.stride = buf->y_stride; |
| |
| xd->plane[0].dst.buf = cm->yv12_fb[cm->new_fb_idx].y_buffer + mb_y_offset; |
| xd->plane[0].dst.stride = cm->yv12_fb[cm->new_fb_idx].y_stride; |
| |
| // do intra 16x16 prediction |
| intra_error = find_best_16x16_intra(cpi, mb_y_offset, |
| &stats->ref[INTRA_FRAME].m.mode); |
| if (intra_error <= 0) |
| intra_error = 1; |
| stats->ref[INTRA_FRAME].err = intra_error; |
| |
| // Golden frame MV search, if it exists and is different than last frame |
| if (golden_ref) { |
| int g_motion_error; |
| xd->plane[0].pre[0].buf = golden_ref->y_buffer + mb_y_offset; |
| xd->plane[0].pre[0].stride = golden_ref->y_stride; |
| g_motion_error = do_16x16_motion_search(cpi, |
| prev_golden_ref_mv, |
| &stats->ref[GOLDEN_FRAME].m.mv, |
| mb_y_offset, gld_y_offset, |
| mb_row, mb_col); |
| stats->ref[GOLDEN_FRAME].err = g_motion_error; |
| } else { |
| stats->ref[GOLDEN_FRAME].err = INT_MAX; |
| stats->ref[GOLDEN_FRAME].m.mv.as_int = 0; |
| } |
| |
| // Alt-ref frame MV search, if it exists and is different than last/golden frame |
| if (alt_ref) { |
| int a_motion_error; |
| xd->plane[0].pre[0].buf = alt_ref->y_buffer + mb_y_offset; |
| xd->plane[0].pre[0].stride = alt_ref->y_stride; |
| a_motion_error = do_16x16_zerozero_search(cpi, |
| &stats->ref[ALTREF_FRAME].m.mv, |
| mb_y_offset, arf_y_offset); |
| |
| stats->ref[ALTREF_FRAME].err = a_motion_error; |
| } else { |
| stats->ref[ALTREF_FRAME].err = INT_MAX; |
| stats->ref[ALTREF_FRAME].m.mv.as_int = 0; |
| } |
| } |
| |
| static void update_mbgraph_frame_stats(VP9_COMP *cpi, |
| MBGRAPH_FRAME_STATS *stats, |
| YV12_BUFFER_CONFIG *buf, |
| YV12_BUFFER_CONFIG *golden_ref, |
| YV12_BUFFER_CONFIG *alt_ref) { |
| MACROBLOCK *const x = &cpi->mb; |
| MACROBLOCKD *const xd = &x->e_mbd; |
| VP9_COMMON *const cm = &cpi->common; |
| |
| int mb_col, mb_row, offset = 0; |
| int mb_y_offset = 0, arf_y_offset = 0, gld_y_offset = 0; |
| int_mv arf_top_mv, gld_top_mv; |
| MODE_INFO mi_local; |
| |
| // Make sure the mi context starts in a consistent state. |
| memset(&mi_local, 0, sizeof(mi_local)); |
| |
| // Set up limit values for motion vectors to prevent them extending outside the UMV borders |
| arf_top_mv.as_int = 0; |
| gld_top_mv.as_int = 0; |
| x->mv_row_min = -(VP9BORDERINPIXELS - 16 - VP9_INTERP_EXTEND); |
| x->mv_row_max = (cm->mb_rows - 1) * 16 + VP9BORDERINPIXELS |
| - 16 - VP9_INTERP_EXTEND; |
| xd->up_available = 0; |
| xd->plane[0].dst.stride = buf->y_stride; |
| xd->plane[0].pre[0].stride = buf->y_stride; |
| xd->plane[1].dst.stride = buf->uv_stride; |
| xd->mode_info_context = &mi_local; |
| |
| for (mb_row = 0; mb_row < cm->mb_rows; mb_row++) { |
| int_mv arf_left_mv, gld_left_mv; |
| int mb_y_in_offset = mb_y_offset; |
| int arf_y_in_offset = arf_y_offset; |
| int gld_y_in_offset = gld_y_offset; |
| |
| // Set up limit values for motion vectors to prevent them extending outside the UMV borders |
| arf_left_mv.as_int = arf_top_mv.as_int; |
| gld_left_mv.as_int = gld_top_mv.as_int; |
| x->mv_col_min = -(VP9BORDERINPIXELS - 16 - VP9_INTERP_EXTEND); |
| x->mv_col_max = (cm->mb_cols - 1) * 16 + VP9BORDERINPIXELS |
| - 16 - VP9_INTERP_EXTEND; |
| xd->left_available = 0; |
| |
| for (mb_col = 0; mb_col < cm->mb_cols; mb_col++) { |
| MBGRAPH_MB_STATS *mb_stats = &stats->mb_stats[offset + mb_col]; |
| |
| update_mbgraph_mb_stats(cpi, mb_stats, buf, mb_y_in_offset, |
| golden_ref, &gld_left_mv, gld_y_in_offset, |
| alt_ref, &arf_left_mv, arf_y_in_offset, |
| mb_row, mb_col); |
| arf_left_mv.as_int = mb_stats->ref[ALTREF_FRAME].m.mv.as_int; |
| gld_left_mv.as_int = mb_stats->ref[GOLDEN_FRAME].m.mv.as_int; |
| if (mb_col == 0) { |
| arf_top_mv.as_int = arf_left_mv.as_int; |
| gld_top_mv.as_int = gld_left_mv.as_int; |
| } |
| xd->left_available = 1; |
| mb_y_in_offset += 16; |
| gld_y_in_offset += 16; |
| arf_y_in_offset += 16; |
| x->mv_col_min -= 16; |
| x->mv_col_max -= 16; |
| } |
| xd->up_available = 1; |
| mb_y_offset += buf->y_stride * 16; |
| gld_y_offset += golden_ref->y_stride * 16; |
| if (alt_ref) |
| arf_y_offset += alt_ref->y_stride * 16; |
| x->mv_row_min -= 16; |
| x->mv_row_max -= 16; |
| offset += cm->mb_cols; |
| } |
| } |
| |
| // void separate_arf_mbs_byzz |
| static void separate_arf_mbs(VP9_COMP *cpi) { |
| VP9_COMMON *const cm = &cpi->common; |
| int mb_col, mb_row, offset, i; |
| int ncnt[4]; |
| int n_frames = cpi->mbgraph_n_frames; |
| |
| int *arf_not_zz; |
| |
| CHECK_MEM_ERROR(arf_not_zz, |
| vpx_calloc(cm->mb_rows * cm->mb_cols * sizeof(*arf_not_zz), 1)); |
| |
| // We are not interested in results beyond the alt ref itself. |
| if (n_frames > cpi->frames_till_gf_update_due) |
| n_frames = cpi->frames_till_gf_update_due; |
| |
| // defer cost to reference frames |
| for (i = n_frames - 1; i >= 0; i--) { |
| MBGRAPH_FRAME_STATS *frame_stats = &cpi->mbgraph_stats[i]; |
| |
| for (offset = 0, mb_row = 0; mb_row < cm->mb_rows; |
| offset += cm->mb_cols, mb_row++) { |
| for (mb_col = 0; mb_col < cm->mb_cols; mb_col++) { |
| MBGRAPH_MB_STATS *mb_stats = &frame_stats->mb_stats[offset + mb_col]; |
| |
| int altref_err = mb_stats->ref[ALTREF_FRAME].err; |
| int intra_err = mb_stats->ref[INTRA_FRAME ].err; |
| int golden_err = mb_stats->ref[GOLDEN_FRAME].err; |
| |
| // Test for altref vs intra and gf and that its mv was 0,0. |
| if (altref_err > 1000 || |
| altref_err > intra_err || |
| altref_err > golden_err) { |
| arf_not_zz[offset + mb_col]++; |
| } |
| } |
| } |
| } |
| |
| vpx_memset(ncnt, 0, sizeof(ncnt)); |
| for (offset = 0, mb_row = 0; mb_row < cm->mb_rows; |
| offset += cm->mb_cols, mb_row++) { |
| for (mb_col = 0; mb_col < cm->mb_cols; mb_col++) { |
| // If any of the blocks in the sequence failed then the MB |
| // goes in segment 0 |
| if (arf_not_zz[offset + mb_col]) { |
| ncnt[0]++; |
| cpi->segmentation_map[offset * 4 + 2 * mb_col] = 0; |
| cpi->segmentation_map[offset * 4 + 2 * mb_col + 1] = 0; |
| cpi->segmentation_map[offset * 4 + 2 * mb_col + cm->mi_cols] = 0; |
| cpi->segmentation_map[offset * 4 + 2 * mb_col + cm->mi_cols + 1] = 0; |
| } else { |
| cpi->segmentation_map[offset * 4 + 2 * mb_col] = 1; |
| cpi->segmentation_map[offset * 4 + 2 * mb_col + 1] = 1; |
| cpi->segmentation_map[offset * 4 + 2 * mb_col + cm->mi_cols] = 1; |
| cpi->segmentation_map[offset * 4 + 2 * mb_col + cm->mi_cols + 1] = 1; |
| ncnt[1]++; |
| } |
| } |
| } |
| |
| // Only bother with segmentation if over 10% of the MBs in static segment |
| // if ( ncnt[1] && (ncnt[0] / ncnt[1] < 10) ) |
| if (1) { |
| // Note % of blocks that are marked as static |
| if (cm->MBs) |
| cpi->static_mb_pct = (ncnt[1] * 100) / cm->MBs; |
| |
| // This error case should not be reachable as this function should |
| // never be called with the common data structure uninitialized. |
| else |
| cpi->static_mb_pct = 0; |
| |
| cpi->seg0_cnt = ncnt[0]; |
| vp9_enable_segmentation((VP9_PTR)cpi); |
| } else { |
| cpi->static_mb_pct = 0; |
| vp9_disable_segmentation((VP9_PTR)cpi); |
| } |
| |
| // Free localy allocated storage |
| vpx_free(arf_not_zz); |
| } |
| |
| void vp9_update_mbgraph_stats(VP9_COMP *cpi) { |
| VP9_COMMON *const cm = &cpi->common; |
| int i, n_frames = vp9_lookahead_depth(cpi->lookahead); |
| YV12_BUFFER_CONFIG *golden_ref = |
| &cm->yv12_fb[cm->ref_frame_map[cpi->gld_fb_idx]]; |
| |
| // we need to look ahead beyond where the ARF transitions into |
| // being a GF - so exit if we don't look ahead beyond that |
| if (n_frames <= cpi->frames_till_gf_update_due) |
| return; |
| if (n_frames > (int)cpi->common.frames_till_alt_ref_frame) |
| n_frames = cpi->common.frames_till_alt_ref_frame; |
| if (n_frames > MAX_LAG_BUFFERS) |
| n_frames = MAX_LAG_BUFFERS; |
| |
| cpi->mbgraph_n_frames = n_frames; |
| for (i = 0; i < n_frames; i++) { |
| MBGRAPH_FRAME_STATS *frame_stats = &cpi->mbgraph_stats[i]; |
| vpx_memset(frame_stats->mb_stats, 0, |
| cm->mb_rows * cm->mb_cols * sizeof(*cpi->mbgraph_stats[i].mb_stats)); |
| } |
| |
| // do motion search to find contribution of each reference to data |
| // later on in this GF group |
| // FIXME really, the GF/last MC search should be done forward, and |
| // the ARF MC search backwards, to get optimal results for MV caching |
| for (i = 0; i < n_frames; i++) { |
| MBGRAPH_FRAME_STATS *frame_stats = &cpi->mbgraph_stats[i]; |
| struct lookahead_entry *q_cur = vp9_lookahead_peek(cpi->lookahead, i); |
| |
| assert(q_cur != NULL); |
| |
| update_mbgraph_frame_stats(cpi, frame_stats, &q_cur->img, |
| golden_ref, cpi->Source); |
| } |
| |
| vp9_clear_system_state(); // __asm emms; |
| |
| separate_arf_mbs(cpi); |
| } |
