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Diffstat (limited to 'vp10/encoder/bitstream.c')
| -rw-r--r-- | vp10/encoder/bitstream.c | 1560 |
1 files changed, 0 insertions, 1560 deletions
diff --git a/vp10/encoder/bitstream.c b/vp10/encoder/bitstream.c deleted file mode 100644 index d9b4be4e5..000000000 --- a/vp10/encoder/bitstream.c +++ /dev/null @@ -1,1560 +0,0 @@ -/* - * 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 <assert.h> -#include <stdio.h> -#include <limits.h> - -#include "vpx/vpx_encoder.h" -#include "vpx_dsp/bitwriter_buffer.h" -#include "vpx_dsp/vpx_dsp_common.h" -#include "vpx_mem/vpx_mem.h" -#include "vpx_ports/mem_ops.h" -#include "vpx_ports/system_state.h" - -#include "vp10/common/entropy.h" -#include "vp10/common/entropymode.h" -#include "vp10/common/entropymv.h" -#include "vp10/common/mvref_common.h" -#include "vp10/common/pred_common.h" -#include "vp10/common/seg_common.h" -#include "vp10/common/tile_common.h" - -#include "vp10/encoder/cost.h" -#include "vp10/encoder/bitstream.h" -#include "vp10/encoder/encodemv.h" -#include "vp10/encoder/mcomp.h" -#include "vp10/encoder/segmentation.h" -#include "vp10/encoder/subexp.h" -#include "vp10/encoder/tokenize.h" - -static const struct vp10_token intra_mode_encodings[INTRA_MODES] = { - {0, 1}, {6, 3}, {28, 5}, {30, 5}, {58, 6}, {59, 6}, {126, 7}, {127, 7}, - {62, 6}, {2, 2}}; -static const struct vp10_token switchable_interp_encodings[SWITCHABLE_FILTERS] = - {{0, 1}, {2, 2}, {3, 2}}; -static const struct vp10_token partition_encodings[PARTITION_TYPES] = - {{0, 1}, {2, 2}, {6, 3}, {7, 3}}; -static const struct vp10_token inter_mode_encodings[INTER_MODES] = - {{2, 2}, {6, 3}, {0, 1}, {7, 3}}; -static const struct vp10_token palette_size_encodings[] = { - {0, 1}, {2, 2}, {6, 3}, {14, 4}, {30, 5}, {62, 6}, {63, 6}, -}; -static const struct vp10_token -palette_color_encodings[PALETTE_MAX_SIZE - 1][PALETTE_MAX_SIZE] = { - {{0, 1}, {1, 1}}, // 2 colors - {{0, 1}, {2, 2}, {3, 2}}, // 3 colors - {{0, 1}, {2, 2}, {6, 3}, {7, 3}}, // 4 colors - {{0, 1}, {2, 2}, {6, 3}, {14, 4}, {15, 4}}, // 5 colors - {{0, 1}, {2, 2}, {6, 3}, {14, 4}, {30, 5}, {31, 5}}, // 6 colors - {{0, 1}, {2, 2}, {6, 3}, {14, 4}, {30, 5}, {62, 6}, {63, 6}}, // 7 colors - {{0, 1}, {2, 2}, {6, 3}, {14, 4}, - {30, 5}, {62, 6}, {126, 7}, {127, 7}}, // 8 colors -}; - -static INLINE void write_uniform(vpx_writer *w, int n, int v) { - int l = get_unsigned_bits(n); - int m = (1 << l) - n; - if (l == 0) - return; - if (v < m) { - vpx_write_literal(w, v, l - 1); - } else { - vpx_write_literal(w, m + ((v - m) >> 1), l - 1); - vpx_write_literal(w, (v - m) & 1, 1); - } -} - -static void write_intra_mode(vpx_writer *w, PREDICTION_MODE mode, - const vpx_prob *probs) { - vp10_write_token(w, vp10_intra_mode_tree, probs, &intra_mode_encodings[mode]); -} - -static void write_inter_mode(vpx_writer *w, PREDICTION_MODE mode, - const vpx_prob *probs) { - assert(is_inter_mode(mode)); - vp10_write_token(w, vp10_inter_mode_tree, probs, - &inter_mode_encodings[INTER_OFFSET(mode)]); -} - -static void encode_unsigned_max(struct vpx_write_bit_buffer *wb, - int data, int max) { - vpx_wb_write_literal(wb, data, get_unsigned_bits(max)); -} - -static void prob_diff_update(const vpx_tree_index *tree, - vpx_prob probs[/*n - 1*/], - const unsigned int counts[/*n - 1*/], - int n, vpx_writer *w) { - int i; - unsigned int branch_ct[32][2]; - - // Assuming max number of probabilities <= 32 - assert(n <= 32); - - vp10_tree_probs_from_distribution(tree, branch_ct, counts); - for (i = 0; i < n - 1; ++i) - vp10_cond_prob_diff_update(w, &probs[i], branch_ct[i]); -} - -static void write_selected_tx_size(const VP10_COMMON *cm, - const MACROBLOCKD *xd, vpx_writer *w) { - TX_SIZE tx_size = xd->mi[0]->mbmi.tx_size; - BLOCK_SIZE bsize = xd->mi[0]->mbmi.sb_type; - const TX_SIZE max_tx_size = max_txsize_lookup[bsize]; - const vpx_prob *const tx_probs = get_tx_probs2(max_tx_size, xd, - &cm->fc->tx_probs); - vpx_write(w, tx_size != TX_4X4, tx_probs[0]); - if (tx_size != TX_4X4 && max_tx_size >= TX_16X16) { - vpx_write(w, tx_size != TX_8X8, tx_probs[1]); - if (tx_size != TX_8X8 && max_tx_size >= TX_32X32) - vpx_write(w, tx_size != TX_16X16, tx_probs[2]); - } -} - -static int write_skip(const VP10_COMMON *cm, const MACROBLOCKD *xd, - int segment_id, const MODE_INFO *mi, vpx_writer *w) { - if (segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP)) { - return 1; - } else { - const int skip = mi->mbmi.skip; - vpx_write(w, skip, vp10_get_skip_prob(cm, xd)); - return skip; - } -} - -static void update_skip_probs(VP10_COMMON *cm, vpx_writer *w, - FRAME_COUNTS *counts) { - int k; - - for (k = 0; k < SKIP_CONTEXTS; ++k) - vp10_cond_prob_diff_update(w, &cm->fc->skip_probs[k], counts->skip[k]); -} - -static void update_switchable_interp_probs(VP10_COMMON *cm, vpx_writer *w, - FRAME_COUNTS *counts) { - int j; - for (j = 0; j < SWITCHABLE_FILTER_CONTEXTS; ++j) - prob_diff_update(vp10_switchable_interp_tree, - cm->fc->switchable_interp_prob[j], - counts->switchable_interp[j], SWITCHABLE_FILTERS, w); -} - -static void pack_palette_tokens(vpx_writer *w, TOKENEXTRA **tp, - BLOCK_SIZE bsize, int n) { - int rows = 4 * num_4x4_blocks_high_lookup[bsize]; - int cols = 4 * num_4x4_blocks_wide_lookup[bsize]; - int i; - TOKENEXTRA *p = *tp; - - for (i = 0; i < rows * cols -1; ++i) { - vp10_write_token(w, vp10_palette_color_tree[n - 2], p->context_tree, - &palette_color_encodings[n - 2][p->token]); - ++p; - } - - *tp = p; -} - -static void pack_mb_tokens(vpx_writer *w, - TOKENEXTRA **tp, const TOKENEXTRA *const stop, - vpx_bit_depth_t bit_depth, const TX_SIZE tx) { - TOKENEXTRA *p = *tp; -#if !CONFIG_MISC_FIXES - (void) tx; -#endif - - while (p < stop && p->token != EOSB_TOKEN) { - const int t = p->token; - const struct vp10_token *const a = &vp10_coef_encodings[t]; - int i = 0; - int v = a->value; - int n = a->len; -#if CONFIG_VP9_HIGHBITDEPTH - const vp10_extra_bit *b; - if (bit_depth == VPX_BITS_12) - b = &vp10_extra_bits_high12[t]; - else if (bit_depth == VPX_BITS_10) - b = &vp10_extra_bits_high10[t]; - else - b = &vp10_extra_bits[t]; -#else - const vp10_extra_bit *const b = &vp10_extra_bits[t]; - (void) bit_depth; -#endif // CONFIG_VP9_HIGHBITDEPTH - - /* skip one or two nodes */ - if (p->skip_eob_node) { - n -= p->skip_eob_node; - i = 2 * p->skip_eob_node; - } - - // TODO(jbb): expanding this can lead to big gains. It allows - // much better branch prediction and would enable us to avoid numerous - // lookups and compares. - - // If we have a token that's in the constrained set, the coefficient tree - // is split into two treed writes. The first treed write takes care of the - // unconstrained nodes. The second treed write takes care of the - // constrained nodes. - if (t >= TWO_TOKEN && t < EOB_TOKEN) { - int len = UNCONSTRAINED_NODES - p->skip_eob_node; - int bits = v >> (n - len); - vp10_write_tree(w, vp10_coef_tree, p->context_tree, bits, len, i); - vp10_write_tree(w, vp10_coef_con_tree, - vp10_pareto8_full[p->context_tree[PIVOT_NODE] - 1], - v, n - len, 0); - } else { - vp10_write_tree(w, vp10_coef_tree, p->context_tree, v, n, i); - } - - if (b->base_val) { - const int e = p->extra, l = b->len; -#if CONFIG_MISC_FIXES - int skip_bits = - (b->base_val == CAT6_MIN_VAL) ? TX_SIZES - 1 - tx : 0; -#else - int skip_bits = 0; -#endif - - if (l) { - const unsigned char *pb = b->prob; - int v = e >> 1; - int n = l; /* number of bits in v, assumed nonzero */ - int i = 0; - - do { - const int bb = (v >> --n) & 1; - if (skip_bits) { - skip_bits--; - assert(!bb); - } else { - vpx_write(w, bb, pb[i >> 1]); - } - i = b->tree[i + bb]; - } while (n); - } - - vpx_write_bit(w, e & 1); - } - ++p; - } - - *tp = p; -} - -static void write_segment_id(vpx_writer *w, const struct segmentation *seg, - const struct segmentation_probs *segp, - int segment_id) { - if (seg->enabled && seg->update_map) - vp10_write_tree(w, vp10_segment_tree, segp->tree_probs, segment_id, 3, 0); -} - -// This function encodes the reference frame -static void write_ref_frames(const VP10_COMMON *cm, const MACROBLOCKD *xd, - vpx_writer *w) { - const MB_MODE_INFO *const mbmi = &xd->mi[0]->mbmi; - const int is_compound = has_second_ref(mbmi); - const int segment_id = mbmi->segment_id; - - // If segment level coding of this signal is disabled... - // or the segment allows multiple reference frame options - if (segfeature_active(&cm->seg, segment_id, SEG_LVL_REF_FRAME)) { - assert(!is_compound); - assert(mbmi->ref_frame[0] == - get_segdata(&cm->seg, segment_id, SEG_LVL_REF_FRAME)); - } else { - // does the feature use compound prediction or not - // (if not specified at the frame/segment level) - if (cm->reference_mode == REFERENCE_MODE_SELECT) { - vpx_write(w, is_compound, vp10_get_reference_mode_prob(cm, xd)); - } else { - assert(!is_compound == (cm->reference_mode == SINGLE_REFERENCE)); - } - - if (is_compound) { - vpx_write(w, mbmi->ref_frame[0] == GOLDEN_FRAME, - vp10_get_pred_prob_comp_ref_p(cm, xd)); - } else { - const int bit0 = mbmi->ref_frame[0] != LAST_FRAME; - vpx_write(w, bit0, vp10_get_pred_prob_single_ref_p1(cm, xd)); - if (bit0) { - const int bit1 = mbmi->ref_frame[0] != GOLDEN_FRAME; - vpx_write(w, bit1, vp10_get_pred_prob_single_ref_p2(cm, xd)); - } - } - } -} - -static void pack_inter_mode_mvs(VP10_COMP *cpi, const MODE_INFO *mi, - vpx_writer *w) { - VP10_COMMON *const cm = &cpi->common; - const nmv_context *nmvc = &cm->fc->nmvc; - const MACROBLOCK *const x = &cpi->td.mb; - const MACROBLOCKD *const xd = &x->e_mbd; - const struct segmentation *const seg = &cm->seg; -#if CONFIG_MISC_FIXES - const struct segmentation_probs *const segp = &cm->fc->seg; -#else - const struct segmentation_probs *const segp = &cm->segp; -#endif - const MB_MODE_INFO *const mbmi = &mi->mbmi; - const MB_MODE_INFO_EXT *const mbmi_ext = x->mbmi_ext; - const PREDICTION_MODE mode = mbmi->mode; - const int segment_id = mbmi->segment_id; - const BLOCK_SIZE bsize = mbmi->sb_type; - const int allow_hp = cm->allow_high_precision_mv; - const int is_inter = is_inter_block(mbmi); - const int is_compound = has_second_ref(mbmi); - int skip, ref; - - if (seg->update_map) { - if (seg->temporal_update) { - const int pred_flag = mbmi->seg_id_predicted; - vpx_prob pred_prob = vp10_get_pred_prob_seg_id(segp, xd); - vpx_write(w, pred_flag, pred_prob); - if (!pred_flag) - write_segment_id(w, seg, segp, segment_id); - } else { - write_segment_id(w, seg, segp, segment_id); - } - } - - skip = write_skip(cm, xd, segment_id, mi, w); - - if (!segfeature_active(seg, segment_id, SEG_LVL_REF_FRAME)) - vpx_write(w, is_inter, vp10_get_intra_inter_prob(cm, xd)); - - if (bsize >= BLOCK_8X8 && cm->tx_mode == TX_MODE_SELECT && - !(is_inter && skip)) { - write_selected_tx_size(cm, xd, w); - } - - if (!is_inter) { - if (bsize >= BLOCK_8X8) { - write_intra_mode(w, mode, cm->fc->y_mode_prob[size_group_lookup[bsize]]); - } else { - int idx, idy; - const int num_4x4_w = num_4x4_blocks_wide_lookup[bsize]; - const int num_4x4_h = num_4x4_blocks_high_lookup[bsize]; - for (idy = 0; idy < 2; idy += num_4x4_h) { - for (idx = 0; idx < 2; idx += num_4x4_w) { - const PREDICTION_MODE b_mode = mi->bmi[idy * 2 + idx].as_mode; - write_intra_mode(w, b_mode, cm->fc->y_mode_prob[0]); - } - } - } - write_intra_mode(w, mbmi->uv_mode, cm->fc->uv_mode_prob[mode]); - } else { - const int mode_ctx = mbmi_ext->mode_context[mbmi->ref_frame[0]]; - const vpx_prob *const inter_probs = cm->fc->inter_mode_probs[mode_ctx]; - write_ref_frames(cm, xd, w); - - // If segment skip is not enabled code the mode. - if (!segfeature_active(seg, segment_id, SEG_LVL_SKIP)) { - if (bsize >= BLOCK_8X8) { - write_inter_mode(w, mode, inter_probs); - } - } - - if (cm->interp_filter == SWITCHABLE) { - const int ctx = vp10_get_pred_context_switchable_interp(xd); - vp10_write_token(w, vp10_switchable_interp_tree, - cm->fc->switchable_interp_prob[ctx], - &switchable_interp_encodings[mbmi->interp_filter]); - ++cpi->interp_filter_selected[0][mbmi->interp_filter]; - } else { - assert(mbmi->interp_filter == cm->interp_filter); - } - - if (bsize < BLOCK_8X8) { - const int num_4x4_w = num_4x4_blocks_wide_lookup[bsize]; - const int num_4x4_h = num_4x4_blocks_high_lookup[bsize]; - int idx, idy; - for (idy = 0; idy < 2; idy += num_4x4_h) { - for (idx = 0; idx < 2; idx += num_4x4_w) { - const int j = idy * 2 + idx; - const PREDICTION_MODE b_mode = mi->bmi[j].as_mode; - write_inter_mode(w, b_mode, inter_probs); - if (b_mode == NEWMV) { - for (ref = 0; ref < 1 + is_compound; ++ref) - vp10_encode_mv(cpi, w, &mi->bmi[j].as_mv[ref].as_mv, - &mbmi_ext->ref_mvs[mbmi->ref_frame[ref]][0].as_mv, - nmvc, allow_hp); - } - } - } - } else { - if (mode == NEWMV) { - for (ref = 0; ref < 1 + is_compound; ++ref) - vp10_encode_mv(cpi, w, &mbmi->mv[ref].as_mv, - &mbmi_ext->ref_mvs[mbmi->ref_frame[ref]][0].as_mv, nmvc, - allow_hp); - } - } - } -} - -static void write_palette_mode_info(const VP10_COMMON *cm, - const MACROBLOCKD *xd, - const MODE_INFO *const mi, - vpx_writer *w) { - const MB_MODE_INFO *const mbmi = &mi->mbmi; - const MODE_INFO *const above_mi = xd->above_mi; - const MODE_INFO *const left_mi = xd->left_mi; - const BLOCK_SIZE bsize = mbmi->sb_type; - const PALETTE_MODE_INFO *pmi = &mbmi->palette_mode_info; - int palette_ctx = 0; - int n, i; - - n = pmi->palette_size[0]; - if (above_mi) - palette_ctx += (above_mi->mbmi.palette_mode_info.palette_size[0] > 0); - if (left_mi) - palette_ctx += (left_mi->mbmi.palette_mode_info.palette_size[0] > 0); - vpx_write(w, n > 0, - vp10_default_palette_y_mode_prob[bsize - BLOCK_8X8][palette_ctx]); - if (n > 0) { - vp10_write_token(w, vp10_palette_size_tree, - vp10_default_palette_y_size_prob[bsize - BLOCK_8X8], - &palette_size_encodings[n - 2]); - for (i = 0; i < n; ++i) - vpx_write_literal(w, pmi->palette_colors[i], - cm->bit_depth); - write_uniform(w, n, pmi->palette_first_color_idx[0]); - } -} - -static void write_mb_modes_kf(const VP10_COMMON *cm, const MACROBLOCKD *xd, - MODE_INFO **mi_8x8, vpx_writer *w) { - const struct segmentation *const seg = &cm->seg; -#if CONFIG_MISC_FIXES - const struct segmentation_probs *const segp = &cm->fc->seg; -#else - const struct segmentation_probs *const segp = &cm->segp; -#endif - const MODE_INFO *const mi = mi_8x8[0]; - const MODE_INFO *const above_mi = xd->above_mi; - const MODE_INFO *const left_mi = xd->left_mi; - const MB_MODE_INFO *const mbmi = &mi->mbmi; - const BLOCK_SIZE bsize = mbmi->sb_type; - - if (seg->update_map) - write_segment_id(w, seg, segp, mbmi->segment_id); - - write_skip(cm, xd, mbmi->segment_id, mi, w); - - if (bsize >= BLOCK_8X8 && cm->tx_mode == TX_MODE_SELECT) - write_selected_tx_size(cm, xd, w); - - if (bsize >= BLOCK_8X8) { - write_intra_mode(w, mbmi->mode, - get_y_mode_probs(cm, mi, above_mi, left_mi, 0)); - } else { - const int num_4x4_w = num_4x4_blocks_wide_lookup[bsize]; - const int num_4x4_h = num_4x4_blocks_high_lookup[bsize]; - int idx, idy; - - for (idy = 0; idy < 2; idy += num_4x4_h) { - for (idx = 0; idx < 2; idx += num_4x4_w) { - const int block = idy * 2 + idx; - write_intra_mode(w, mi->bmi[block].as_mode, - get_y_mode_probs(cm, mi, above_mi, left_mi, block)); - } - } - } - - write_intra_mode(w, mbmi->uv_mode, cm->fc->uv_mode_prob[mbmi->mode]); - - if (bsize >= BLOCK_8X8 && cm->allow_screen_content_tools && - mbmi->mode == DC_PRED) - write_palette_mode_info(cm, xd, mi, w); -} - -static void write_modes_b(VP10_COMP *cpi, const TileInfo *const tile, - vpx_writer *w, TOKENEXTRA **tok, - const TOKENEXTRA *const tok_end, - int mi_row, int mi_col) { - const VP10_COMMON *const cm = &cpi->common; - MACROBLOCKD *const xd = &cpi->td.mb.e_mbd; - MODE_INFO *m; - int plane; - - xd->mi = cm->mi_grid_visible + (mi_row * cm->mi_stride + mi_col); - m = xd->mi[0]; - - cpi->td.mb.mbmi_ext = cpi->mbmi_ext_base + (mi_row * cm->mi_cols + mi_col); - - set_mi_row_col(xd, tile, - mi_row, num_8x8_blocks_high_lookup[m->mbmi.sb_type], - mi_col, num_8x8_blocks_wide_lookup[m->mbmi.sb_type], - cm->mi_rows, cm->mi_cols); - if (frame_is_intra_only(cm)) { - write_mb_modes_kf(cm, xd, xd->mi, w); - } else { - pack_inter_mode_mvs(cpi, m, w); - } - - if (m->mbmi.palette_mode_info.palette_size[0] > 0) { - assert(*tok < tok_end); - pack_palette_tokens(w, tok, m->mbmi.sb_type, - m->mbmi.palette_mode_info.palette_size[0]); - assert(*tok < tok_end); - } - - if (!m->mbmi.skip) { - assert(*tok < tok_end); - for (plane = 0; plane < MAX_MB_PLANE; ++plane) { - TX_SIZE tx = plane ? get_uv_tx_size(&m->mbmi, &xd->plane[plane]) - : m->mbmi.tx_size; - pack_mb_tokens(w, tok, tok_end, cm->bit_depth, tx); - assert(*tok < tok_end && (*tok)->token == EOSB_TOKEN); - (*tok)++; - } - } -} - -static void write_partition(const VP10_COMMON *const cm, - const MACROBLOCKD *const xd, - int hbs, int mi_row, int mi_col, - PARTITION_TYPE p, BLOCK_SIZE bsize, vpx_writer *w) { - const int ctx = partition_plane_context(xd, mi_row, mi_col, bsize); - const vpx_prob *const probs = cm->fc->partition_prob[ctx]; - const int has_rows = (mi_row + hbs) < cm->mi_rows; - const int has_cols = (mi_col + hbs) < cm->mi_cols; - - if (has_rows && has_cols) { - vp10_write_token(w, vp10_partition_tree, probs, &partition_encodings[p]); - } else if (!has_rows && has_cols) { - assert(p == PARTITION_SPLIT || p == PARTITION_HORZ); - vpx_write(w, p == PARTITION_SPLIT, probs[1]); - } else if (has_rows && !has_cols) { - assert(p == PARTITION_SPLIT || p == PARTITION_VERT); - vpx_write(w, p == PARTITION_SPLIT, probs[2]); - } else { - assert(p == PARTITION_SPLIT); - } -} - -static void write_modes_sb(VP10_COMP *cpi, - const TileInfo *const tile, vpx_writer *w, - TOKENEXTRA **tok, const TOKENEXTRA *const tok_end, - int mi_row, int mi_col, BLOCK_SIZE bsize) { - const VP10_COMMON *const cm = &cpi->common; - MACROBLOCKD *const xd = &cpi->td.mb.e_mbd; - - const int bsl = b_width_log2_lookup[bsize]; - const int bs = (1 << bsl) / 4; - PARTITION_TYPE partition; - BLOCK_SIZE subsize; - const MODE_INFO *m = NULL; - - if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols) - return; - - m = cm->mi_grid_visible[mi_row * cm->mi_stride + mi_col]; - - partition = partition_lookup[bsl][m->mbmi.sb_type]; - write_partition(cm, xd, bs, mi_row, mi_col, partition, bsize, w); - subsize = get_subsize(bsize, partition); - if (subsize < BLOCK_8X8) { - write_modes_b(cpi, tile, w, tok, tok_end, mi_row, mi_col); - } else { - switch (partition) { - case PARTITION_NONE: - write_modes_b(cpi, tile, w, tok, tok_end, mi_row, mi_col); - break; - case PARTITION_HORZ: - write_modes_b(cpi, tile, w, tok, tok_end, mi_row, mi_col); - if (mi_row + bs < cm->mi_rows) - write_modes_b(cpi, tile, w, tok, tok_end, mi_row + bs, mi_col); - break; - case PARTITION_VERT: - write_modes_b(cpi, tile, w, tok, tok_end, mi_row, mi_col); - if (mi_col + bs < cm->mi_cols) - write_modes_b(cpi, tile, w, tok, tok_end, mi_row, mi_col + bs); - break; - case PARTITION_SPLIT: - write_modes_sb(cpi, tile, w, tok, tok_end, mi_row, mi_col, subsize); - write_modes_sb(cpi, tile, w, tok, tok_end, mi_row, mi_col + bs, - subsize); - write_modes_sb(cpi, tile, w, tok, tok_end, mi_row + bs, mi_col, - subsize); - write_modes_sb(cpi, tile, w, tok, tok_end, mi_row + bs, mi_col + bs, - subsize); - break; - default: - assert(0); - } - } - - // update partition context - if (bsize >= BLOCK_8X8 && - (bsize == BLOCK_8X8 || partition != PARTITION_SPLIT)) - update_partition_context(xd, mi_row, mi_col, subsize, bsize); -} - -static void write_modes(VP10_COMP *cpi, - const TileInfo *const tile, vpx_writer *w, - TOKENEXTRA **tok, const TOKENEXTRA *const tok_end) { - MACROBLOCKD *const xd = &cpi->td.mb.e_mbd; - int mi_row, mi_col; - - for (mi_row = tile->mi_row_start; mi_row < tile->mi_row_end; - mi_row += MI_BLOCK_SIZE) { - vp10_zero(xd->left_seg_context); - for (mi_col = tile->mi_col_start; mi_col < tile->mi_col_end; - mi_col += MI_BLOCK_SIZE) - write_modes_sb(cpi, tile, w, tok, tok_end, mi_row, mi_col, - BLOCK_64X64); - } -} - -static void build_tree_distribution(VP10_COMP *cpi, TX_SIZE tx_size, - vp10_coeff_stats *coef_branch_ct, - vp10_coeff_probs_model *coef_probs) { - vp10_coeff_count *coef_counts = cpi->td.rd_counts.coef_counts[tx_size]; - unsigned int (*eob_branch_ct)[REF_TYPES][COEF_BANDS][COEFF_CONTEXTS] = - cpi->common.counts.eob_branch[tx_size]; - int i, j, k, l, m; - - for (i = 0; i < PLANE_TYPES; ++i) { - for (j = 0; j < REF_TYPES; ++j) { - for (k = 0; k < COEF_BANDS; ++k) { - for (l = 0; l < BAND_COEFF_CONTEXTS(k); ++l) { - vp10_tree_probs_from_distribution(vp10_coef_tree, - coef_branch_ct[i][j][k][l], - coef_counts[i][j][k][l]); - coef_branch_ct[i][j][k][l][0][1] = eob_branch_ct[i][j][k][l] - - coef_branch_ct[i][j][k][l][0][0]; - for (m = 0; m < UNCONSTRAINED_NODES; ++m) - coef_probs[i][j][k][l][m] = get_binary_prob( - coef_branch_ct[i][j][k][l][m][0], - coef_branch_ct[i][j][k][l][m][1]); - } - } - } - } -} - -static void update_coef_probs_common(vpx_writer* const bc, VP10_COMP *cpi, - TX_SIZE tx_size, - vp10_coeff_stats *frame_branch_ct, - vp10_coeff_probs_model *new_coef_probs) { - vp10_coeff_probs_model *old_coef_probs = cpi->common.fc->coef_probs[tx_size]; - const vpx_prob upd = DIFF_UPDATE_PROB; - const int entropy_nodes_update = UNCONSTRAINED_NODES; - int i, j, k, l, t; - int stepsize = cpi->sf.coeff_prob_appx_step; - - switch (cpi->sf.use_fast_coef_updates) { - case TWO_LOOP: { - /* dry run to see if there is any update at all needed */ - int savings = 0; - int update[2] = {0, 0}; - for (i = 0; i < PLANE_TYPES; ++i) { - for (j = 0; j < REF_TYPES; ++j) { - for (k = 0; k < COEF_BANDS; ++k) { - for (l = 0; l < BAND_COEFF_CONTEXTS(k); ++l) { - for (t = 0; t < entropy_nodes_update; ++t) { - vpx_prob newp = new_coef_probs[i][j][k][l][t]; - const vpx_prob oldp = old_coef_probs[i][j][k][l][t]; - int s; - int u = 0; - if (t == PIVOT_NODE) - s = vp10_prob_diff_update_savings_search_model( - frame_branch_ct[i][j][k][l][0], - old_coef_probs[i][j][k][l], &newp, upd, stepsize); - else - s = vp10_prob_diff_update_savings_search( - frame_branch_ct[i][j][k][l][t], oldp, &newp, upd); - if (s > 0 && newp != oldp) - u = 1; - if (u) - savings += s - (int)(vp10_cost_zero(upd)); - else - savings -= (int)(vp10_cost_zero(upd)); - update[u]++; - } - } - } - } - } - - // printf("Update %d %d, savings %d\n", update[0], update[1], savings); - /* Is coef updated at all */ - if (update[1] == 0 || savings < 0) { - vpx_write_bit(bc, 0); - return; - } - vpx_write_bit(bc, 1); - for (i = 0; i < PLANE_TYPES; ++i) { - for (j = 0; j < REF_TYPES; ++j) { - for (k = 0; k < COEF_BANDS; ++k) { - for (l = 0; l < BAND_COEFF_CONTEXTS(k); ++l) { - // calc probs and branch cts for this frame only - for (t = 0; t < entropy_nodes_update; ++t) { - vpx_prob newp = new_coef_probs[i][j][k][l][t]; - vpx_prob *oldp = old_coef_probs[i][j][k][l] + t; - const vpx_prob upd = DIFF_UPDATE_PROB; - int s; - int u = 0; - if (t == PIVOT_NODE) - s = vp10_prob_diff_update_savings_search_model( - frame_branch_ct[i][j][k][l][0], - old_coef_probs[i][j][k][l], &newp, upd, stepsize); - else - s = vp10_prob_diff_update_savings_search( - frame_branch_ct[i][j][k][l][t], - *oldp, &newp, upd); - if (s > 0 && newp != *oldp) - u = 1; - vpx_write(bc, u, upd); - if (u) { - /* send/use new probability */ - vp10_write_prob_diff_update(bc, newp, *oldp); - *oldp = newp; - } - } - } - } - } - } - return; - } - - case ONE_LOOP_REDUCED: { - int updates = 0; - int noupdates_before_first = 0; - for (i = 0; i < PLANE_TYPES; ++i) { - for (j = 0; j < REF_TYPES; ++j) { - for (k = 0; k < COEF_BANDS; ++k) { - for (l = 0; l < BAND_COEFF_CONTEXTS(k); ++l) { - // calc probs and branch cts for this frame only - for (t = 0; t < entropy_nodes_update; ++t) { - vpx_prob newp = new_coef_probs[i][j][k][l][t]; - vpx_prob *oldp = old_coef_probs[i][j][k][l] + t; - int s; - int u = 0; - - if (t == PIVOT_NODE) { - s = vp10_prob_diff_update_savings_search_model( - frame_branch_ct[i][j][k][l][0], - old_coef_probs[i][j][k][l], &newp, upd, stepsize); - } else { - s = vp10_prob_diff_update_savings_search( - frame_branch_ct[i][j][k][l][t], - *oldp, &newp, upd); - } - - if (s > 0 && newp != *oldp) - u = 1; - updates += u; - if (u == 0 && updates == 0) { - noupdates_before_first++; - continue; - } - if (u == 1 && updates == 1) { - int v; - // first update - vpx_write_bit(bc, 1); - for (v = 0; v < noupdates_before_first; ++v) - vpx_write(bc, 0, upd); - } - vpx_write(bc, u, upd); - if (u) { - /* send/use new probability */ - vp10_write_prob_diff_update(bc, newp, *oldp); - *oldp = newp; - } - } - } - } - } - } - if (updates == 0) { - vpx_write_bit(bc, 0); // no updates - } - return; - } - default: - assert(0); - } -} - -static void update_coef_probs(VP10_COMP *cpi, vpx_writer* w) { - const TX_MODE tx_mode = cpi->common.tx_mode; - const TX_SIZE max_tx_size = tx_mode_to_biggest_tx_size[tx_mode]; - TX_SIZE tx_size; - for (tx_size = TX_4X4; tx_size <= max_tx_size; ++tx_size) { - vp10_coeff_stats frame_branch_ct[PLANE_TYPES]; - vp10_coeff_probs_model frame_coef_probs[PLANE_TYPES]; - if (cpi->td.counts->tx.tx_totals[tx_size] <= 20 || - (tx_size >= TX_16X16 && cpi->sf.tx_size_search_method == USE_TX_8X8)) { - vpx_write_bit(w, 0); - } else { - build_tree_distribution(cpi, tx_size, frame_branch_ct, - frame_coef_probs); - update_coef_probs_common(w, cpi, tx_size, frame_branch_ct, - frame_coef_probs); - } - } -} - -static void encode_loopfilter(struct loopfilter *lf, - struct vpx_write_bit_buffer *wb) { - int i; - - // Encode the loop filter level and type - vpx_wb_write_literal(wb, lf->filter_level, 6); - vpx_wb_write_literal(wb, lf->sharpness_level, 3); - - // Write out loop filter deltas applied at the MB level based on mode or - // ref frame (if they are enabled). - vpx_wb_write_bit(wb, lf->mode_ref_delta_enabled); - - if (lf->mode_ref_delta_enabled) { - vpx_wb_write_bit(wb, lf->mode_ref_delta_update); - if (lf->mode_ref_delta_update) { - for (i = 0; i < MAX_REF_FRAMES; i++) { - const int delta = lf->ref_deltas[i]; - const int changed = delta != lf->last_ref_deltas[i]; - vpx_wb_write_bit(wb, changed); - if (changed) { - lf->last_ref_deltas[i] = delta; - vpx_wb_write_inv_signed_literal(wb, delta, 6); - } - } - - for (i = 0; i < MAX_MODE_LF_DELTAS; i++) { - const int delta = lf->mode_deltas[i]; - const int changed = delta != lf->last_mode_deltas[i]; - vpx_wb_write_bit(wb, changed); - if (changed) { - lf->last_mode_deltas[i] = delta; - vpx_wb_write_inv_signed_literal(wb, delta, 6); - } - } - } - } -} - -static void write_delta_q(struct vpx_write_bit_buffer *wb, int delta_q) { - if (delta_q != 0) { - vpx_wb_write_bit(wb, 1); - vpx_wb_write_inv_signed_literal(wb, delta_q, CONFIG_MISC_FIXES ? 6 : 4); - } else { - vpx_wb_write_bit(wb, 0); - } -} - -static void encode_quantization(const VP10_COMMON *const cm, - struct vpx_write_bit_buffer *wb) { - vpx_wb_write_literal(wb, cm->base_qindex, QINDEX_BITS); - write_delta_q(wb, cm->y_dc_delta_q); - write_delta_q(wb, cm->uv_dc_delta_q); - write_delta_q(wb, cm->uv_ac_delta_q); -} - -static void encode_segmentation(VP10_COMMON *cm, MACROBLOCKD *xd, - struct vpx_write_bit_buffer *wb) { - int i, j; - - const struct segmentation *seg = &cm->seg; -#if !CONFIG_MISC_FIXES - const struct segmentation_probs *segp = &cm->segp; -#endif - - vpx_wb_write_bit(wb, seg->enabled); - if (!seg->enabled) - return; - - // Segmentation map - if (!frame_is_intra_only(cm) && !cm->error_resilient_mode) { - vpx_wb_write_bit(wb, seg->update_map); - } else { - assert(seg->update_map == 1); - } - if (seg->update_map) { - // Select the coding strategy (temporal or spatial) - vp10_choose_segmap_coding_method(cm, xd); -#if !CONFIG_MISC_FIXES - // Write out probabilities used to decode unpredicted macro-block segments - for (i = 0; i < SEG_TREE_PROBS; i++) { - const int prob = segp->tree_probs[i]; - const int update = prob != MAX_PROB; - vpx_wb_write_bit(wb, update); - if (update) - vpx_wb_write_literal(wb, prob, 8); - } -#endif - - // Write out the chosen coding method. - if (!frame_is_intra_only(cm) && !cm->error_resilient_mode) { - vpx_wb_write_bit(wb, seg->temporal_update); - } else { - assert(seg->temporal_update == 0); - } - -#if !CONFIG_MISC_FIXES - if (seg->temporal_update) { - for (i = 0; i < PREDICTION_PROBS; i++) { - const int prob = segp->pred_probs[i]; - const int update = prob != MAX_PROB; - vpx_wb_write_bit(wb, update); - if (update) - vpx_wb_write_literal(wb, prob, 8); - } - } -#endif - } - - // Segmentation data - vpx_wb_write_bit(wb, seg->update_data); - if (seg->update_data) { - vpx_wb_write_bit(wb, seg->abs_delta); - - for (i = 0; i < MAX_SEGMENTS; i++) { - for (j = 0; j < SEG_LVL_MAX; j++) { - const int active = segfeature_active(seg, i, j); - vpx_wb_write_bit(wb, active); - if (active) { - const int data = get_segdata(seg, i, j); - const int data_max = vp10_seg_feature_data_max(j); - - if (vp10_is_segfeature_signed(j)) { - encode_unsigned_max(wb, abs(data), data_max); - vpx_wb_write_bit(wb, data < 0); - } else { - encode_unsigned_max(wb, data, data_max); - } - } - } - } - } -} - -#if CONFIG_MISC_FIXES -static void update_seg_probs(VP10_COMP *cpi, vpx_writer *w) { - VP10_COMMON *cm = &cpi->common; - - if (!cpi->common.seg.enabled) - return; - - if (cpi->common.seg.temporal_update) { - int i; - - for (i = 0; i < PREDICTION_PROBS; i++) - vp10_cond_prob_diff_update(w, &cm->fc->seg.pred_probs[i], - cm->counts.seg.pred[i]); - - prob_diff_update(vp10_segment_tree, cm->fc->seg.tree_probs, - cm->counts.seg.tree_mispred, MAX_SEGMENTS, w); - } else { - prob_diff_update(vp10_segment_tree, cm->fc->seg.tree_probs, - cm->counts.seg.tree_total, MAX_SEGMENTS, w); - } -} - -static void write_txfm_mode(TX_MODE mode, struct vpx_write_bit_buffer *wb) { - vpx_wb_write_bit(wb, mode == TX_MODE_SELECT); - if (mode != TX_MODE_SELECT) - vpx_wb_write_literal(wb, mode, 2); -} -#endif - -static void update_txfm_probs(VP10_COMMON *cm, vpx_writer *w, - FRAME_COUNTS *counts) { -#if !CONFIG_MISC_FIXES - // Mode - vpx_write_literal(w, VPXMIN(cm->tx_mode, ALLOW_32X32), 2); - if (cm->tx_mode >= ALLOW_32X32) - vpx_write_bit(w, cm->tx_mode == TX_MODE_SELECT); - - // Probabilities -#endif - - if (cm->tx_mode == TX_MODE_SELECT) { - int i, j; - unsigned int ct_8x8p[TX_SIZES - 3][2]; - unsigned int ct_16x16p[TX_SIZES - 2][2]; - unsigned int ct_32x32p[TX_SIZES - 1][2]; - - - for (i = 0; i < TX_SIZE_CONTEXTS; i++) { - vp10_tx_counts_to_branch_counts_8x8(counts->tx.p8x8[i], ct_8x8p); - for (j = 0; j < TX_SIZES - 3; j++) - vp10_cond_prob_diff_update(w, &cm->fc->tx_probs.p8x8[i][j], ct_8x8p[j]); - } - - for (i = 0; i < TX_SIZE_CONTEXTS; i++) { - vp10_tx_counts_to_branch_counts_16x16(counts->tx.p16x16[i], ct_16x16p); - for (j = 0; j < TX_SIZES - 2; j++) - vp10_cond_prob_diff_update(w, &cm->fc->tx_probs.p16x16[i][j], - ct_16x16p[j]); - } - - for (i = 0; i < TX_SIZE_CONTEXTS; i++) { - vp10_tx_counts_to_branch_counts_32x32(counts->tx.p32x32[i], ct_32x32p); - for (j = 0; j < TX_SIZES - 1; j++) - vp10_cond_prob_diff_update(w, &cm->fc->tx_probs.p32x32[i][j], - ct_32x32p[j]); - } - } -} - -static void write_interp_filter(INTERP_FILTER filter, - struct vpx_write_bit_buffer *wb) { - vpx_wb_write_bit(wb, filter == SWITCHABLE); - if (filter != SWITCHABLE) - vpx_wb_write_literal(wb, filter, 2); -} - -static void fix_interp_filter(VP10_COMMON *cm, FRAME_COUNTS *counts) { - if (cm->interp_filter == SWITCHABLE) { - // Check to see if only one of the filters is actually used - int count[SWITCHABLE_FILTERS]; - int i, j, c = 0; - for (i = 0; i < SWITCHABLE_FILTERS; ++i) { - count[i] = 0; - for (j = 0; j < SWITCHABLE_FILTER_CONTEXTS; ++j) - count[i] += counts->switchable_interp[j][i]; - c += (count[i] > 0); - } - if (c == 1) { - // Only one filter is used. So set the filter at frame level - for (i = 0; i < SWITCHABLE_FILTERS; ++i) { - if (count[i]) { - cm->interp_filter = i; - break; - } - } - } - } -} - -static void write_tile_info(const VP10_COMMON *const cm, - struct vpx_write_bit_buffer *wb) { - int min_log2_tile_cols, max_log2_tile_cols, ones; - vp10_get_tile_n_bits(cm->mi_cols, &min_log2_tile_cols, &max_log2_tile_cols); - - // columns - ones = cm->log2_tile_cols - min_log2_tile_cols; - while (ones--) - vpx_wb_write_bit(wb, 1); - - if (cm->log2_tile_cols < max_log2_tile_cols) - vpx_wb_write_bit(wb, 0); - - // rows - vpx_wb_write_bit(wb, cm->log2_tile_rows != 0); - if (cm->log2_tile_rows != 0) - vpx_wb_write_bit(wb, cm->log2_tile_rows != 1); -} - -static int get_refresh_mask(VP10_COMP *cpi) { - if (vp10_preserve_existing_gf(cpi)) { - // We have decided to preserve the previously existing golden frame as our - // new ARF frame. However, in the short term we leave it in the GF slot and, - // if we're updating the GF with the current decoded frame, we save it - // instead to the ARF slot. - // Later, in the function vp10_encoder.c:vp10_update_reference_frames() we - // will swap gld_fb_idx and alt_fb_idx to achieve our objective. We do it - // there so that it can be done outside of the recode loop. - // Note: This is highly specific to the use of ARF as a forward reference, - // and this needs to be generalized as other uses are implemented - // (like RTC/temporal scalability). - return (cpi->refresh_last_frame << cpi->lst_fb_idx) | - (cpi->refresh_golden_frame << cpi->alt_fb_idx); - } else { - int arf_idx = cpi->alt_fb_idx; - if ((cpi->oxcf.pass == 2) && cpi->multi_arf_allowed) { - const GF_GROUP *const gf_group = &cpi->twopass.gf_group; - arf_idx = gf_group->arf_update_idx[gf_group->index]; - } - return (cpi->refresh_last_frame << cpi->lst_fb_idx) | - (cpi->refresh_golden_frame << cpi->gld_fb_idx) | - (cpi->refresh_alt_ref_frame << arf_idx); - } -} - -static size_t encode_tiles(VP10_COMP *cpi, uint8_t *data_ptr, - unsigned int *max_tile_sz) { - VP10_COMMON *const cm = &cpi->common; - vpx_writer residual_bc; - int tile_row, tile_col; - TOKENEXTRA *tok_end; - size_t total_size = 0; - const int tile_cols = 1 << cm->log2_tile_cols; - const int tile_rows = 1 << cm->log2_tile_rows; - unsigned int max_tile = 0; - - memset(cm->above_seg_context, 0, - sizeof(*cm->above_seg_context) * mi_cols_aligned_to_sb(cm->mi_cols)); - - for (tile_row = 0; tile_row < tile_rows; tile_row++) { - for (tile_col = 0; tile_col < tile_cols; tile_col++) { - int tile_idx = tile_row * tile_cols + tile_col; - TOKENEXTRA *tok = cpi->tile_tok[tile_row][tile_col]; - - tok_end = cpi->tile_tok[tile_row][tile_col] + - cpi->tok_count[tile_row][tile_col]; - - if (tile_col < tile_cols - 1 || tile_row < tile_rows - 1) - vpx_start_encode(&residual_bc, data_ptr + total_size + 4); - else - vpx_start_encode(&residual_bc, data_ptr + total_size); - - write_modes(cpi, &cpi->tile_data[tile_idx].tile_info, - &residual_bc, &tok, tok_end); - assert(tok == tok_end); - vpx_stop_encode(&residual_bc); - if (tile_col < tile_cols - 1 || tile_row < tile_rows - 1) { - unsigned int tile_sz; - - // size of this tile - assert(residual_bc.pos > 0); - tile_sz = residual_bc.pos - CONFIG_MISC_FIXES; - mem_put_le32(data_ptr + total_size, tile_sz); - max_tile = max_tile > tile_sz ? max_tile : tile_sz; - total_size += 4; - } - - total_size += residual_bc.pos; - } - } - *max_tile_sz = max_tile; - - return total_size; -} - -static void write_render_size(const VP10_COMMON *cm, - struct vpx_write_bit_buffer *wb) { - const int scaling_active = cm->width != cm->render_width || - cm->height != cm->render_height; - vpx_wb_write_bit(wb, scaling_active); - if (scaling_active) { - vpx_wb_write_literal(wb, cm->render_width - 1, 16); - vpx_wb_write_literal(wb, cm->render_height - 1, 16); - } -} - -static void write_frame_size(const VP10_COMMON *cm, - struct vpx_write_bit_buffer *wb) { - vpx_wb_write_literal(wb, cm->width - 1, 16); - vpx_wb_write_literal(wb, cm->height - 1, 16); - - write_render_size(cm, wb); -} - -static void write_frame_size_with_refs(VP10_COMP *cpi, - struct vpx_write_bit_buffer *wb) { - VP10_COMMON *const cm = &cpi->common; - int found = 0; - - MV_REFERENCE_FRAME ref_frame; - for (ref_frame = LAST_FRAME; ref_frame <= ALTREF_FRAME; ++ref_frame) { - YV12_BUFFER_CONFIG *cfg = get_ref_frame_buffer(cpi, ref_frame); - - if (cfg != NULL) { - found = cm->width == cfg->y_crop_width && - cm->height == cfg->y_crop_height; -#if CONFIG_MISC_FIXES - found &= cm->render_width == cfg->render_width && - cm->render_height == cfg->render_height; -#endif - } - vpx_wb_write_bit(wb, found); - if (found) { - break; - } - } - - if (!found) { - vpx_wb_write_literal(wb, cm->width - 1, 16); - vpx_wb_write_literal(wb, cm->height - 1, 16); - -#if CONFIG_MISC_FIXES - write_render_size(cm, wb); -#endif - } - -#if !CONFIG_MISC_FIXES - write_render_size(cm, wb); -#endif -} - -static void write_sync_code(struct vpx_write_bit_buffer *wb) { - vpx_wb_write_literal(wb, VP10_SYNC_CODE_0, 8); - vpx_wb_write_literal(wb, VP10_SYNC_CODE_1, 8); - vpx_wb_write_literal(wb, VP10_SYNC_CODE_2, 8); -} - -static void write_profile(BITSTREAM_PROFILE profile, - struct vpx_write_bit_buffer *wb) { - switch (profile) { - case PROFILE_0: - vpx_wb_write_literal(wb, 0, 2); - break; - case PROFILE_1: - vpx_wb_write_literal(wb, 2, 2); - break; - case PROFILE_2: - vpx_wb_write_literal(wb, 1, 2); - break; - case PROFILE_3: - vpx_wb_write_literal(wb, 6, 3); - break; - default: - assert(0); - } -} - -static void write_bitdepth_colorspace_sampling( - VP10_COMMON *const cm, struct vpx_write_bit_buffer *wb) { - if (cm->profile >= PROFILE_2) { - assert(cm->bit_depth > VPX_BITS_8); - vpx_wb_write_bit(wb, cm->bit_depth == VPX_BITS_10 ? 0 : 1); - } - vpx_wb_write_literal(wb, cm->color_space, 3); - if (cm->color_space != VPX_CS_SRGB) { - // 0: [16, 235] (i.e. xvYCC), 1: [0, 255] - vpx_wb_write_bit(wb, cm->color_range); - if (cm->profile == PROFILE_1 || cm->profile == PROFILE_3) { - assert(cm->subsampling_x != 1 || cm->subsampling_y != 1); - vpx_wb_write_bit(wb, cm->subsampling_x); - vpx_wb_write_bit(wb, cm->subsampling_y); - vpx_wb_write_bit(wb, 0); // unused - } else { - assert(cm->subsampling_x == 1 && cm->subsampling_y == 1); - } - } else { - assert(cm->profile == PROFILE_1 || cm->profile == PROFILE_3); - vpx_wb_write_bit(wb, 0); // unused - } -} - -static void write_uncompressed_header(VP10_COMP *cpi, - struct vpx_write_bit_buffer *wb) { - VP10_COMMON *const cm = &cpi->common; - MACROBLOCKD *const xd = &cpi->td.mb.e_mbd; - - vpx_wb_write_literal(wb, VP9_FRAME_MARKER, 2); - - write_profile(cm->profile, wb); - - vpx_wb_write_bit(wb, 0); // show_existing_frame - vpx_wb_write_bit(wb, cm->frame_type); - vpx_wb_write_bit(wb, cm->show_frame); - vpx_wb_write_bit(wb, cm->error_resilient_mode); - - if (cm->frame_type == KEY_FRAME) { - write_sync_code(wb); - write_bitdepth_colorspace_sampling(cm, wb); - write_frame_size(cm, wb); - if (frame_is_intra_only(cm)) - vpx_wb_write_bit(wb, cm->allow_screen_content_tools); - } else { - if (!cm->show_frame) - vpx_wb_write_bit(wb, cm->intra_only); - - if (!cm->error_resilient_mode) { -#if CONFIG_MISC_FIXES - if (cm->intra_only) { - vpx_wb_write_bit(wb, - cm->reset_frame_context == RESET_FRAME_CONTEXT_ALL); - } else { - vpx_wb_write_bit(wb, - cm->reset_frame_context != RESET_FRAME_CONTEXT_NONE); - if (cm->reset_frame_context != RESET_FRAME_CONTEXT_NONE) - vpx_wb_write_bit(wb, - cm->reset_frame_context == RESET_FRAME_CONTEXT_ALL); - } -#else - static const int reset_frame_context_conv_tbl[3] = { 0, 2, 3 }; - - vpx_wb_write_literal(wb, - reset_frame_context_conv_tbl[cm->reset_frame_context], 2); -#endif - } - - if (cm->intra_only) { - write_sync_code(wb); - -#if CONFIG_MISC_FIXES - write_bitdepth_colorspace_sampling(cm, wb); -#else - // Note for profile 0, 420 8bpp is assumed. - if (cm->profile > PROFILE_0) { - write_bitdepth_colorspace_sampling(cm, wb); - } -#endif - - vpx_wb_write_literal(wb, get_refresh_mask(cpi), REF_FRAMES); - write_frame_size(cm, wb); - } else { - MV_REFERENCE_FRAME ref_frame; - vpx_wb_write_literal(wb, get_refresh_mask(cpi), REF_FRAMES); - for (ref_frame = LAST_FRAME; ref_frame <= ALTREF_FRAME; ++ref_frame) { - assert(get_ref_frame_map_idx(cpi, ref_frame) != INVALID_IDX); - vpx_wb_write_literal(wb, get_ref_frame_map_idx(cpi, ref_frame), - REF_FRAMES_LOG2); - vpx_wb_write_bit(wb, cm->ref_frame_sign_bias[ref_frame]); - } - - write_frame_size_with_refs(cpi, wb); - - vpx_wb_write_bit(wb, cm->allow_high_precision_mv); - - fix_interp_filter(cm, cpi->td.counts); - write_interp_filter(cm->interp_filter, wb); - } - } - - if (!cm->error_resilient_mode) { - vpx_wb_write_bit(wb, - cm->refresh_frame_context != REFRESH_FRAME_CONTEXT_OFF); -#if CONFIG_MISC_FIXES - if (cm->refresh_frame_context != REFRESH_FRAME_CONTEXT_OFF) -#endif - vpx_wb_write_bit(wb, cm->refresh_frame_context != - REFRESH_FRAME_CONTEXT_BACKWARD); - } - - vpx_wb_write_literal(wb, cm->frame_context_idx, FRAME_CONTEXTS_LOG2); - - encode_loopfilter(&cm->lf, wb); - encode_quantization(cm, wb); - encode_segmentation(cm, xd, wb); -#if CONFIG_MISC_FIXES - if (!cm->seg.enabled && xd->lossless[0]) - cm->tx_mode = TX_4X4; - else - write_txfm_mode(cm->tx_mode, wb); - if (cpi->allow_comp_inter_inter) { - const int use_hybrid_pred = cm->reference_mode == REFERENCE_MODE_SELECT; - const int use_compound_pred = cm->reference_mode != SINGLE_REFERENCE; - - vpx_wb_write_bit(wb, use_hybrid_pred); - if (!use_hybrid_pred) - vpx_wb_write_bit(wb, use_compound_pred); - } -#endif - - write_tile_info(cm, wb); -} - -static size_t write_compressed_header(VP10_COMP *cpi, uint8_t *data) { - VP10_COMMON *const cm = &cpi->common; - FRAME_CONTEXT *const fc = cm->fc; - FRAME_COUNTS *counts = cpi->td.counts; - vpx_writer header_bc; - int i; -#if CONFIG_MISC_FIXES - int j; -#endif - - vpx_start_encode(&header_bc, data); - -#if !CONFIG_MISC_FIXES - if (cpi->td.mb.e_mbd.lossless[0]) - cm->tx_mode = TX_4X4; - else - update_txfm_probs(cm, &header_bc, counts); -#else - update_txfm_probs(cm, &header_bc, counts); -#endif - update_coef_probs(cpi, &header_bc); - update_skip_probs(cm, &header_bc, counts); -#if CONFIG_MISC_FIXES - update_seg_probs(cpi, &header_bc); - - for (i = 0; i < INTRA_MODES; ++i) - prob_diff_update(vp10_intra_mode_tree, fc->uv_mode_prob[i], - counts->uv_mode[i], INTRA_MODES, &header_bc); - - for (i = 0; i < PARTITION_CONTEXTS; ++i) - prob_diff_update(vp10_partition_tree, fc->partition_prob[i], - counts->partition[i], PARTITION_TYPES, &header_bc); -#endif - - if (frame_is_intra_only(cm)) { - vp10_copy(cm->kf_y_prob, vp10_kf_y_mode_prob); -#if CONFIG_MISC_FIXES - for (i = 0; i < INTRA_MODES; ++i) - for (j = 0; j < INTRA_MODES; ++j) - prob_diff_update(vp10_intra_mode_tree, cm->kf_y_prob[i][j], - counts->kf_y_mode[i][j], INTRA_MODES, &header_bc); -#endif - } else { - for (i = 0; i < INTER_MODE_CONTEXTS; ++i) - prob_diff_update(vp10_inter_mode_tree, cm->fc->inter_mode_probs[i], - counts->inter_mode[i], INTER_MODES, &header_bc); - - if (cm->interp_filter == SWITCHABLE) - update_switchable_interp_probs(cm, &header_bc, counts); - - for (i = 0; i < INTRA_INTER_CONTEXTS; i++) - vp10_cond_prob_diff_update(&header_bc, &fc->intra_inter_prob[i], - counts->intra_inter[i]); - - if (cpi->allow_comp_inter_inter) { - const int use_hybrid_pred = cm->reference_mode == REFERENCE_MODE_SELECT; -#if !CONFIG_MISC_FIXES - const int use_compound_pred = cm->reference_mode != SINGLE_REFERENCE; - - vpx_write_bit(&header_bc, use_compound_pred); - if (use_compound_pred) { - vpx_write_bit(&header_bc, use_hybrid_pred); - if (use_hybrid_pred) - for (i = 0; i < COMP_INTER_CONTEXTS; i++) - vp10_cond_prob_diff_update(&header_bc, &fc->comp_inter_prob[i], - counts->comp_inter[i]); - } -#else - if (use_hybrid_pred) - for (i = 0; i < COMP_INTER_CONTEXTS; i++) - vp10_cond_prob_diff_update(&header_bc, &fc->comp_inter_prob[i], - counts->comp_inter[i]); -#endif - } - - if (cm->reference_mode != COMPOUND_REFERENCE) { - for (i = 0; i < REF_CONTEXTS; i++) { - vp10_cond_prob_diff_update(&header_bc, &fc->single_ref_prob[i][0], - counts->single_ref[i][0]); - vp10_cond_prob_diff_update(&header_bc, &fc->single_ref_prob[i][1], - counts->single_ref[i][1]); - } - } - - if (cm->reference_mode != SINGLE_REFERENCE) - for (i = 0; i < REF_CONTEXTS; i++) - vp10_cond_prob_diff_update(&header_bc, &fc->comp_ref_prob[i], - counts->comp_ref[i]); - - for (i = 0; i < BLOCK_SIZE_GROUPS; ++i) - prob_diff_update(vp10_intra_mode_tree, cm->fc->y_mode_prob[i], - counts->y_mode[i], INTRA_MODES, &header_bc); - -#if !CONFIG_MISC_FIXES - for (i = 0; i < PARTITION_CONTEXTS; ++i) - prob_diff_update(vp10_partition_tree, fc->partition_prob[i], - counts->partition[i], PARTITION_TYPES, &header_bc); -#endif - - vp10_write_nmv_probs(cm, cm->allow_high_precision_mv, &header_bc, - &counts->mv); - } - - vpx_stop_encode(&header_bc); - assert(header_bc.pos <= 0xffff); - - return header_bc.pos; -} - -#if CONFIG_MISC_FIXES -static int remux_tiles(uint8_t *dest, const int sz, - const int n_tiles, const int mag) { - int rpos = 0, wpos = 0, n; - - for (n = 0; n < n_tiles; n++) { - int tile_sz; - - if (n == n_tiles - 1) { - tile_sz = sz - rpos; - } else { - tile_sz = mem_get_le32(&dest[rpos]) + 1; - rpos += 4; - switch (mag) { - case 0: - dest[wpos] = tile_sz - 1; - break; - case 1: - mem_put_le16(&dest[wpos], tile_sz - 1); - break; - case 2: - mem_put_le24(&dest[wpos], tile_sz - 1); - break; - case 3: // remuxing should only happen if mag < 3 - default: - assert("Invalid value for tile size magnitude" && 0); - } - wpos += mag + 1; - } - - memmove(&dest[wpos], &dest[rpos], tile_sz); - wpos += tile_sz; - rpos += tile_sz; - } - - assert(rpos > wpos); - assert(rpos == sz); - - return wpos; -} -#endif - -void vp10_pack_bitstream(VP10_COMP *const cpi, uint8_t *dest, size_t *size) { - uint8_t *data = dest; - size_t first_part_size, uncompressed_hdr_size, data_sz; - struct vpx_write_bit_buffer wb = {data, 0}; - struct vpx_write_bit_buffer saved_wb; - unsigned int max_tile; -#if CONFIG_MISC_FIXES - VP10_COMMON *const cm = &cpi->common; - const int n_log2_tiles = cm->log2_tile_rows + cm->log2_tile_cols; - const int have_tiles = n_log2_tiles > 0; -#else - const int have_tiles = 0; // we have tiles, but we don't want to write a - // tile size marker in the header -#endif - - write_uncompressed_header(cpi, &wb); - saved_wb = wb; - // don't know in advance first part. size - vpx_wb_write_literal(&wb, 0, 16 + have_tiles * 2); - - uncompressed_hdr_size = vpx_wb_bytes_written(&wb); - data += uncompressed_hdr_size; - - vpx_clear_system_state(); - - first_part_size = write_compressed_header(cpi, data); - data += first_part_size; - - data_sz = encode_tiles(cpi, data, &max_tile); -#if CONFIG_MISC_FIXES - if (max_tile > 0) { - int mag; - unsigned int mask; - - // Choose the (tile size) magnitude - for (mag = 0, mask = 0xff; mag < 4; mag++) { - if (max_tile <= mask) - break; - mask <<= 8; - mask |= 0xff; - } - assert(n_log2_tiles > 0); - vpx_wb_write_literal(&saved_wb, mag, 2); - if (mag < 3) - data_sz = remux_tiles(data, data_sz, 1 << n_log2_tiles, mag); - } else { - assert(n_log2_tiles == 0); - } -#endif - data += data_sz; - - // TODO(jbb): Figure out what to do if first_part_size > 16 bits. - vpx_wb_write_literal(&saved_wb, (int)first_part_size, 16); - - *size = data - dest; -} |