diff options
Diffstat (limited to 'media/libaom/src/av1/encoder/tokenize.c')
| -rw-r--r-- | media/libaom/src/av1/encoder/tokenize.c | 248 |
1 files changed, 248 insertions, 0 deletions
diff --git a/media/libaom/src/av1/encoder/tokenize.c b/media/libaom/src/av1/encoder/tokenize.c new file mode 100644 index 000000000..16a6a9a35 --- /dev/null +++ b/media/libaom/src/av1/encoder/tokenize.c @@ -0,0 +1,248 @@ +/* + * Copyright (c) 2016, Alliance for Open Media. All rights reserved + * + * This source code is subject to the terms of the BSD 2 Clause License and + * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License + * was not distributed with this source code in the LICENSE file, you can + * obtain it at www.aomedia.org/license/software. If the Alliance for Open + * Media Patent License 1.0 was not distributed with this source code in the + * PATENTS file, you can obtain it at www.aomedia.org/license/patent. + */ + +#include <assert.h> +#include <math.h> +#include <stdio.h> +#include <string.h> + +#include "aom_mem/aom_mem.h" + +#include "av1/common/entropy.h" +#include "av1/common/pred_common.h" +#include "av1/common/scan.h" +#include "av1/common/seg_common.h" + +#include "av1/encoder/cost.h" +#include "av1/encoder/encoder.h" +#include "av1/encoder/encodetxb.h" +#include "av1/encoder/rdopt.h" +#include "av1/encoder/tokenize.h" + +static int cost_and_tokenize_map(Av1ColorMapParam *param, TOKENEXTRA **t, + int plane, int calc_rate, int allow_update_cdf, + FRAME_COUNTS *counts) { + const uint8_t *const color_map = param->color_map; + MapCdf map_cdf = param->map_cdf; + ColorCost color_cost = param->color_cost; + const int plane_block_width = param->plane_width; + const int rows = param->rows; + const int cols = param->cols; + const int n = param->n_colors; + const int palette_size_idx = n - PALETTE_MIN_SIZE; + int this_rate = 0; + uint8_t color_order[PALETTE_MAX_SIZE]; + + (void)plane; + (void)counts; + + for (int k = 1; k < rows + cols - 1; ++k) { + for (int j = AOMMIN(k, cols - 1); j >= AOMMAX(0, k - rows + 1); --j) { + int i = k - j; + int color_new_idx; + const int color_ctx = av1_get_palette_color_index_context( + color_map, plane_block_width, i, j, n, color_order, &color_new_idx); + assert(color_new_idx >= 0 && color_new_idx < n); + if (calc_rate) { + this_rate += (*color_cost)[palette_size_idx][color_ctx][color_new_idx]; + } else { + (*t)->token = color_new_idx; + (*t)->color_map_cdf = map_cdf[palette_size_idx][color_ctx]; + ++(*t); + if (allow_update_cdf) + update_cdf(map_cdf[palette_size_idx][color_ctx], color_new_idx, n); +#if CONFIG_ENTROPY_STATS + if (plane) { + ++counts->palette_uv_color_index[palette_size_idx][color_ctx] + [color_new_idx]; + } else { + ++counts->palette_y_color_index[palette_size_idx][color_ctx] + [color_new_idx]; + } +#endif + } + } + } + if (calc_rate) return this_rate; + return 0; +} + +static void get_palette_params(const MACROBLOCK *const x, int plane, + BLOCK_SIZE bsize, Av1ColorMapParam *params) { + const MACROBLOCKD *const xd = &x->e_mbd; + const MB_MODE_INFO *const mbmi = xd->mi[0]; + const PALETTE_MODE_INFO *const pmi = &mbmi->palette_mode_info; + params->color_map = xd->plane[plane].color_index_map; + params->map_cdf = plane ? xd->tile_ctx->palette_uv_color_index_cdf + : xd->tile_ctx->palette_y_color_index_cdf; + params->color_cost = + plane ? &x->palette_uv_color_cost : &x->palette_y_color_cost; + params->n_colors = pmi->palette_size[plane]; + av1_get_block_dimensions(bsize, plane, xd, ¶ms->plane_width, NULL, + ¶ms->rows, ¶ms->cols); +} + +static void get_color_map_params(const MACROBLOCK *const x, int plane, + BLOCK_SIZE bsize, TX_SIZE tx_size, + COLOR_MAP_TYPE type, + Av1ColorMapParam *params) { + (void)tx_size; + memset(params, 0, sizeof(*params)); + switch (type) { + case PALETTE_MAP: get_palette_params(x, plane, bsize, params); break; + default: assert(0 && "Invalid color map type"); return; + } +} + +int av1_cost_color_map(const MACROBLOCK *const x, int plane, BLOCK_SIZE bsize, + TX_SIZE tx_size, COLOR_MAP_TYPE type) { + assert(plane == 0 || plane == 1); + Av1ColorMapParam color_map_params; + get_color_map_params(x, plane, bsize, tx_size, type, &color_map_params); + return cost_and_tokenize_map(&color_map_params, NULL, plane, 1, 0, NULL); +} + +void av1_tokenize_color_map(const MACROBLOCK *const x, int plane, + TOKENEXTRA **t, BLOCK_SIZE bsize, TX_SIZE tx_size, + COLOR_MAP_TYPE type, int allow_update_cdf, + FRAME_COUNTS *counts) { + assert(plane == 0 || plane == 1); + Av1ColorMapParam color_map_params; + get_color_map_params(x, plane, bsize, tx_size, type, &color_map_params); + // The first color index does not use context or entropy. + (*t)->token = color_map_params.color_map[0]; + (*t)->color_map_cdf = NULL; + ++(*t); + cost_and_tokenize_map(&color_map_params, t, plane, 0, allow_update_cdf, + counts); +} + +void tokenize_vartx(ThreadData *td, TOKENEXTRA **t, RUN_TYPE dry_run, + TX_SIZE tx_size, BLOCK_SIZE plane_bsize, int blk_row, + int blk_col, int block, int plane, void *arg) { + MACROBLOCK *const x = &td->mb; + MACROBLOCKD *const xd = &x->e_mbd; + MB_MODE_INFO *const mbmi = xd->mi[0]; + const struct macroblockd_plane *const pd = &xd->plane[plane]; + const int max_blocks_high = max_block_high(xd, plane_bsize, plane); + const int max_blocks_wide = max_block_wide(xd, plane_bsize, plane); + + if (blk_row >= max_blocks_high || blk_col >= max_blocks_wide) return; + + const TX_SIZE plane_tx_size = + plane ? av1_get_max_uv_txsize(mbmi->sb_type, pd->subsampling_x, + pd->subsampling_y) + : mbmi->inter_tx_size[av1_get_txb_size_index(plane_bsize, blk_row, + blk_col)]; + + if (tx_size == plane_tx_size || plane) { + plane_bsize = get_plane_block_size(mbmi->sb_type, pd->subsampling_x, + pd->subsampling_y); + if (!dry_run) { + av1_update_and_record_txb_context(plane, block, blk_row, blk_col, + plane_bsize, tx_size, arg); + } else if (dry_run == DRY_RUN_NORMAL) { + av1_update_txb_context_b(plane, block, blk_row, blk_col, plane_bsize, + tx_size, arg); + } else { + printf("DRY_RUN_COSTCOEFFS is not supported yet\n"); + assert(0); + } + } else { + // Half the block size in transform block unit. + const TX_SIZE sub_txs = sub_tx_size_map[tx_size]; + const int bsw = tx_size_wide_unit[sub_txs]; + const int bsh = tx_size_high_unit[sub_txs]; + const int step = bsw * bsh; + + assert(bsw > 0 && bsh > 0); + + for (int row = 0; row < tx_size_high_unit[tx_size]; row += bsh) { + for (int col = 0; col < tx_size_wide_unit[tx_size]; col += bsw) { + const int offsetr = blk_row + row; + const int offsetc = blk_col + col; + + if (offsetr >= max_blocks_high || offsetc >= max_blocks_wide) continue; + + tokenize_vartx(td, t, dry_run, sub_txs, plane_bsize, offsetr, offsetc, + block, plane, arg); + block += step; + } + } + } +} + +void av1_tokenize_sb_vartx(const AV1_COMP *cpi, ThreadData *td, TOKENEXTRA **t, + RUN_TYPE dry_run, int mi_row, int mi_col, + BLOCK_SIZE bsize, int *rate, + uint8_t allow_update_cdf) { + const AV1_COMMON *const cm = &cpi->common; + const int num_planes = av1_num_planes(cm); + MACROBLOCK *const x = &td->mb; + MACROBLOCKD *const xd = &x->e_mbd; + MB_MODE_INFO *const mbmi = xd->mi[0]; + (void)t; + struct tokenize_b_args arg = { cpi, td, t, 0, allow_update_cdf }; + if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols) return; + + if (mbmi->skip) { + av1_reset_skip_context(xd, mi_row, mi_col, bsize, num_planes); + return; + } + + for (int plane = 0; plane < num_planes; ++plane) { + if (!is_chroma_reference(mi_row, mi_col, bsize, + xd->plane[plane].subsampling_x, + xd->plane[plane].subsampling_y)) { + continue; + } + const struct macroblockd_plane *const pd = &xd->plane[plane]; + const BLOCK_SIZE bsizec = + scale_chroma_bsize(bsize, pd->subsampling_x, pd->subsampling_y); + const BLOCK_SIZE plane_bsize = + get_plane_block_size(bsizec, pd->subsampling_x, pd->subsampling_y); + const int mi_width = block_size_wide[plane_bsize] >> tx_size_wide_log2[0]; + const int mi_height = block_size_high[plane_bsize] >> tx_size_high_log2[0]; + const TX_SIZE max_tx_size = get_vartx_max_txsize(xd, plane_bsize, plane); + const BLOCK_SIZE txb_size = txsize_to_bsize[max_tx_size]; + int bw = block_size_wide[txb_size] >> tx_size_wide_log2[0]; + int bh = block_size_high[txb_size] >> tx_size_high_log2[0]; + int idx, idy; + int block = 0; + int step = tx_size_wide_unit[max_tx_size] * tx_size_high_unit[max_tx_size]; + + const BLOCK_SIZE max_unit_bsize = + get_plane_block_size(BLOCK_64X64, pd->subsampling_x, pd->subsampling_y); + int mu_blocks_wide = + block_size_wide[max_unit_bsize] >> tx_size_wide_log2[0]; + int mu_blocks_high = + block_size_high[max_unit_bsize] >> tx_size_high_log2[0]; + + mu_blocks_wide = AOMMIN(mi_width, mu_blocks_wide); + mu_blocks_high = AOMMIN(mi_height, mu_blocks_high); + + for (idy = 0; idy < mi_height; idy += mu_blocks_high) { + for (idx = 0; idx < mi_width; idx += mu_blocks_wide) { + int blk_row, blk_col; + const int unit_height = AOMMIN(mu_blocks_high + idy, mi_height); + const int unit_width = AOMMIN(mu_blocks_wide + idx, mi_width); + for (blk_row = idy; blk_row < unit_height; blk_row += bh) { + for (blk_col = idx; blk_col < unit_width; blk_col += bw) { + tokenize_vartx(td, t, dry_run, max_tx_size, plane_bsize, blk_row, + blk_col, block, plane, &arg); + block += step; + } + } + } + } + } + if (rate) *rate += arg.this_rate; +} |