/* * 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 #include #include #include #include #include #include #include #include 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.reduce_first_step_size + (cpi->speed < 8 ? (cpi->speed > 5 ? 1 : 0) : 2); step_param = MIN(step_param, (cpi->sf.max_step_search_steps - 2)); vp9_clamp_mv_min_max(x, &ref_mv->as_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, step_param, x->errorperbit, 0, &v_fn_ptr, 0, ref_mv, dst_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, 0, cpi->sf.subpel_iters_per_step, NULL, NULL, & distortion, &sse); } vp9_set_mbmode_and_mvs(x, NEWMV, dst_mv); vp9_build_inter_predictors_sby(xd, mb_row, mb_col, BLOCK_16X16); 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 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) { 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; xd->mode_info_context->mbmi.mode = mode; vp9_predict_intra_block(xd, 0, 2, TX_16X16, mode, x->plane[0].src.buf, x->plane[0].src.stride, xd->plane[0].dst.buf, xd->plane[0].dst.stride); 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_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); 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 = { { 0 } }; // 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 - 8 - VP9_INTERP_EXTEND); x->mv_row_max = (cm->mb_rows - 1) * 8 + VP9BORDERINPIXELS - 8 - 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; mi_local.mbmi.sb_type = BLOCK_16X16; mi_local.mbmi.ref_frame[0] = LAST_FRAME; mi_local.mbmi.ref_frame[1] = NONE; 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 - 8 - VP9_INTERP_EXTEND); x->mv_col_max = (cm->mb_cols - 1) * 8 + VP9BORDERINPIXELS - 8 - 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] = { 0 }; int n_frames = cpi->mbgraph_n_frames; int *arf_not_zz; CHECK_MEM_ERROR(cm, 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]++; } } } } 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->frames_till_alt_ref_frame) n_frames = cpi->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); }