| /* |
| * Copyright (c) 2019, 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 <stdint.h> |
| |
| #include "config/aom_config.h" |
| #include "config/aom_scale_rtcd.h" |
| |
| #include "aom/aom_codec.h" |
| #include "aom/aom_encoder.h" |
| |
| #include "aom_ports/system_state.h" |
| |
| #include "av1/common/av1_common_int.h" |
| |
| #include "av1/encoder/encoder.h" |
| #include "av1/encoder/firstpass.h" |
| #include "av1/encoder/gop_structure.h" |
| |
| // Set parameters for frames between 'start' and 'end' (excluding both). |
| static void set_multi_layer_params(const TWO_PASS *twopass, |
| GF_GROUP *const gf_group, RATE_CONTROL *rc, |
| FRAME_INFO *frame_info, int start, int end, |
| int *cur_frame_idx, int *frame_ind, |
| int arf_ind, int layer_depth) { |
| const int num_frames_to_process = end - start - 1; |
| assert(num_frames_to_process >= 0); |
| if (num_frames_to_process == 0) return; |
| |
| // Either we are at the last level of the pyramid, or we don't have enough |
| // frames between 'l' and 'r' to create one more level. |
| if (layer_depth > gf_group->max_layer_depth_allowed || |
| num_frames_to_process < 3) { |
| // Leaf nodes. |
| while (++start < end) { |
| gf_group->update_type[*frame_ind] = LF_UPDATE; |
| gf_group->arf_src_offset[*frame_ind] = 0; |
| ++*cur_frame_idx; |
| gf_group->cur_frame_idx[*frame_ind] = *cur_frame_idx; |
| gf_group->frame_disp_idx[*frame_ind] = start; |
| gf_group->layer_depth[*frame_ind] = MAX_ARF_LAYERS; |
| gf_group->arf_boost[*frame_ind] = av1_calc_arf_boost( |
| twopass, rc, frame_info, start, end - start, 0, NULL, NULL); |
| gf_group->max_layer_depth = |
| AOMMAX(gf_group->max_layer_depth, layer_depth); |
| ++(*frame_ind); |
| } |
| } else { |
| const int m = (start + end) / 2; |
| |
| // Internal ARF. |
| gf_group->update_type[*frame_ind] = INTNL_ARF_UPDATE; |
| gf_group->arf_src_offset[*frame_ind] = m - start - 1; |
| gf_group->cur_frame_idx[*frame_ind] = *cur_frame_idx; |
| gf_group->frame_disp_idx[*frame_ind] = m; |
| gf_group->layer_depth[*frame_ind] = layer_depth; |
| |
| // Get the boost factor for intermediate ARF frames. |
| gf_group->arf_boost[*frame_ind] = av1_calc_arf_boost( |
| twopass, rc, frame_info, m, end - m, m - start, NULL, NULL); |
| ++(*frame_ind); |
| |
| // Frames displayed before this internal ARF. |
| set_multi_layer_params(twopass, gf_group, rc, frame_info, start, m, |
| cur_frame_idx, frame_ind, 1, layer_depth + 1); |
| |
| // Overlay for internal ARF. |
| gf_group->update_type[*frame_ind] = INTNL_OVERLAY_UPDATE; |
| gf_group->arf_src_offset[*frame_ind] = 0; |
| gf_group->cur_frame_idx[*frame_ind] = *cur_frame_idx; |
| gf_group->frame_disp_idx[*frame_ind] = m; |
| gf_group->arf_boost[*frame_ind] = 0; |
| gf_group->layer_depth[*frame_ind] = layer_depth; |
| ++(*frame_ind); |
| |
| // Frames displayed after this internal ARF. |
| set_multi_layer_params(twopass, gf_group, rc, frame_info, m, end, |
| cur_frame_idx, frame_ind, arf_ind, layer_depth + 1); |
| } |
| } |
| |
| static int construct_multi_layer_gf_structure( |
| AV1_COMP *cpi, TWO_PASS *twopass, GF_GROUP *const gf_group, |
| RATE_CONTROL *rc, FRAME_INFO *const frame_info, int gf_interval, |
| FRAME_UPDATE_TYPE first_frame_update_type) { |
| int frame_index = 0; |
| |
| // Keyframe / Overlay frame / Golden frame. |
| assert(gf_interval >= 1); |
| assert(first_frame_update_type == KF_UPDATE || |
| first_frame_update_type == OVERLAY_UPDATE || |
| first_frame_update_type == GF_UPDATE); |
| |
| gf_group->update_type[frame_index] = first_frame_update_type; |
| gf_group->arf_src_offset[frame_index] = 0; |
| gf_group->cur_frame_idx[frame_index] = 0; |
| gf_group->layer_depth[frame_index] = |
| first_frame_update_type == OVERLAY_UPDATE ? MAX_ARF_LAYERS + 1 : 0; |
| gf_group->max_layer_depth = 0; |
| ++frame_index; |
| |
| // ALTREF. |
| const int use_altref = gf_group->max_layer_depth_allowed > 0; |
| if (use_altref) { |
| gf_group->update_type[frame_index] = ARF_UPDATE; |
| gf_group->arf_src_offset[frame_index] = gf_interval - 1; |
| gf_group->cur_frame_idx[frame_index] = 0; |
| gf_group->frame_disp_idx[frame_index] = gf_interval; |
| gf_group->layer_depth[frame_index] = 1; |
| gf_group->arf_boost[frame_index] = cpi->rc.gfu_boost; |
| gf_group->max_layer_depth = 1; |
| ++frame_index; |
| } |
| |
| int cur_frame_index = 0; |
| // Rest of the frames. |
| set_multi_layer_params(twopass, gf_group, rc, frame_info, 0, gf_interval, |
| &cur_frame_index, &frame_index, 0, use_altref + 1); |
| |
| // The end frame will be Overlay frame for an ARF GOP; otherwise set it to |
| // be GF, for consistency, which will be updated in the next GOP. |
| gf_group->update_type[frame_index] = use_altref ? OVERLAY_UPDATE : GF_UPDATE; |
| gf_group->arf_src_offset[frame_index] = 0; |
| return frame_index; |
| } |
| |
| #define CHECK_GF_PARAMETER 0 |
| #if CHECK_GF_PARAMETER |
| void check_frame_params(GF_GROUP *const gf_group, int gf_interval) { |
| static const char *update_type_strings[FRAME_UPDATE_TYPES] = { |
| "KF_UPDATE", "LF_UPDATE", "GF_UPDATE", |
| "ARF_UPDATE", "OVERLAY_UPDATE", "INTNL_OVERLAY_UPDATE", |
| "INTNL_ARF_UPDATE" |
| }; |
| FILE *fid = fopen("GF_PARAMS.txt", "a"); |
| |
| fprintf(fid, "\ngf_interval = {%d}\n", gf_interval); |
| for (int i = 0; i < gf_group->size; ++i) { |
| fprintf(fid, "#%2d : %s %d %d %d %d\n", i, |
| update_type_strings[gf_group->update_type[i]], |
| gf_group->arf_src_offset[i], gf_group->arf_pos_in_gf[i], |
| gf_group->arf_update_idx[i], gf_group->pyramid_level[i]); |
| } |
| |
| fprintf(fid, "number of nodes in each level: \n"); |
| for (int i = 0; i < gf_group->pyramid_height; ++i) { |
| fprintf(fid, "lvl %d: %d ", i, gf_group->pyramid_lvl_nodes[i]); |
| } |
| fprintf(fid, "\n"); |
| fclose(fid); |
| } |
| #endif // CHECK_GF_PARAMETER |
| |
| #define REF_IDX(ref) ((ref)-LAST_FRAME) |
| |
| static INLINE void reset_ref_frame_idx(int *ref_idx, int reset_value) { |
| for (int i = 0; i < REF_FRAMES; ++i) ref_idx[i] = reset_value; |
| } |
| |
| static INLINE void set_ref_frame_disp_idx(GF_GROUP *const gf_group) { |
| for (int i = 0; i < gf_group->size; ++i) { |
| for (int ref = 0; ref < INTER_REFS_PER_FRAME + 1; ++ref) { |
| int ref_gop_idx = gf_group->ref_frame_gop_idx[i][ref]; |
| if (ref_gop_idx == -1) { |
| gf_group->ref_frame_disp_idx[i][ref] = -1; |
| } else { |
| gf_group->ref_frame_disp_idx[i][ref] = |
| gf_group->frame_disp_idx[ref_gop_idx]; |
| } |
| } |
| } |
| } |
| |
| static void set_gop_ref_frame_map(GF_GROUP *const gf_group) { |
| // Initialize the reference slots as all -1. |
| for (int frame_idx = 0; frame_idx < gf_group->size; ++frame_idx) |
| reset_ref_frame_idx(gf_group->ref_frame_gop_idx[frame_idx], -1); |
| |
| // Set the map for frames in the current gop |
| for (int frame_idx = 0; frame_idx < gf_group->size; ++frame_idx) { |
| const FRAME_UPDATE_TYPE update_type = gf_group->update_type[frame_idx]; |
| // TODO(yuec): need to figure out how to determine |
| // (1) whether a KEY_FRAME has show_frame on |
| // (2) whether a frame with INTNL_OVERLAY_UPDATE type has |
| // show_existing_frame on |
| const int show_frame = |
| update_type != ARF_UPDATE && update_type != INTNL_ARF_UPDATE; |
| const int show_existing_frame = |
| update_type == OVERLAY_UPDATE || update_type == INTNL_OVERLAY_UPDATE; |
| |
| int this_ref_map[INTER_REFS_PER_FRAME + 1]; |
| memcpy(this_ref_map, gf_group->ref_frame_gop_idx[frame_idx], |
| sizeof(this_ref_map)); |
| int *next_ref_map = &gf_group->ref_frame_gop_idx[frame_idx + 1][0]; |
| |
| switch (update_type) { |
| case KF_UPDATE: |
| if (show_frame) { |
| reset_ref_frame_idx(this_ref_map, frame_idx); |
| } else { |
| this_ref_map[REF_IDX(LAST3_FRAME)] = frame_idx; |
| this_ref_map[REF_IDX(EXTREF_FRAME)] = frame_idx; |
| this_ref_map[REF_IDX(ALTREF2_FRAME)] = frame_idx; |
| this_ref_map[REF_IDX(GOLDEN_FRAME)] = frame_idx; |
| this_ref_map[REF_IDX(ALTREF_FRAME)] = frame_idx; |
| } |
| break; |
| case LF_UPDATE: this_ref_map[REF_IDX(LAST3_FRAME)] = frame_idx; break; |
| case GF_UPDATE: |
| this_ref_map[REF_IDX(LAST3_FRAME)] = frame_idx; |
| this_ref_map[REF_IDX(GOLDEN_FRAME)] = frame_idx; |
| break; |
| case OVERLAY_UPDATE: |
| this_ref_map[REF_IDX(ALTREF_FRAME)] = frame_idx; |
| break; |
| case ARF_UPDATE: this_ref_map[REF_IDX(ALTREF_FRAME)] = frame_idx; break; |
| case INTNL_OVERLAY_UPDATE: |
| if (!show_existing_frame) |
| this_ref_map[REF_IDX(LAST3_FRAME)] = frame_idx; |
| break; |
| case INTNL_ARF_UPDATE: |
| this_ref_map[REF_IDX(EXTREF_FRAME)] = frame_idx; |
| break; |
| default: assert(0); break; |
| } |
| |
| memcpy(next_ref_map, this_ref_map, sizeof(this_ref_map)); |
| |
| switch (update_type) { |
| case LF_UPDATE: |
| case GF_UPDATE: |
| next_ref_map[REF_IDX(LAST3_FRAME)] = this_ref_map[REF_IDX(LAST2_FRAME)]; |
| next_ref_map[REF_IDX(LAST2_FRAME)] = this_ref_map[REF_IDX(LAST_FRAME)]; |
| next_ref_map[REF_IDX(LAST_FRAME)] = this_ref_map[REF_IDX(LAST3_FRAME)]; |
| break; |
| case INTNL_OVERLAY_UPDATE: |
| if (!show_existing_frame) { |
| next_ref_map[REF_IDX(LAST3_FRAME)] = |
| this_ref_map[REF_IDX(LAST2_FRAME)]; |
| next_ref_map[REF_IDX(LAST2_FRAME)] = |
| this_ref_map[REF_IDX(LAST_FRAME)]; |
| next_ref_map[REF_IDX(LAST_FRAME)] = |
| this_ref_map[REF_IDX(LAST3_FRAME)]; |
| } else { |
| next_ref_map[REF_IDX(LAST_FRAME)] = |
| this_ref_map[REF_IDX(BWDREF_FRAME)]; |
| next_ref_map[REF_IDX(LAST2_FRAME)] = |
| this_ref_map[REF_IDX(LAST_FRAME)]; |
| next_ref_map[REF_IDX(LAST3_FRAME)] = |
| this_ref_map[REF_IDX(LAST2_FRAME)]; |
| next_ref_map[REF_IDX(BWDREF_FRAME)] = |
| this_ref_map[REF_IDX(ALTREF2_FRAME)]; |
| next_ref_map[REF_IDX(ALTREF2_FRAME)] = |
| this_ref_map[REF_IDX(EXTREF_FRAME)]; |
| next_ref_map[REF_IDX(EXTREF_FRAME)] = |
| this_ref_map[REF_IDX(LAST3_FRAME)]; |
| } |
| break; |
| case INTNL_ARF_UPDATE: |
| if (!show_existing_frame) { |
| next_ref_map[REF_IDX(BWDREF_FRAME)] = |
| this_ref_map[REF_IDX(EXTREF_FRAME)]; |
| next_ref_map[REF_IDX(ALTREF2_FRAME)] = |
| this_ref_map[REF_IDX(BWDREF_FRAME)]; |
| next_ref_map[REF_IDX(EXTREF_FRAME)] = |
| this_ref_map[REF_IDX(ALTREF2_FRAME)]; |
| } |
| break; |
| case OVERLAY_UPDATE: |
| next_ref_map[REF_IDX(ALTREF_FRAME)] = |
| this_ref_map[REF_IDX(GOLDEN_FRAME)]; |
| next_ref_map[REF_IDX(GOLDEN_FRAME)] = |
| this_ref_map[REF_IDX(ALTREF_FRAME)]; |
| break; |
| default: break; |
| } |
| } |
| |
| // Set the map in display order index by converting from gop indices in the |
| // above map |
| set_ref_frame_disp_idx(gf_group); |
| } |
| |
| void av1_gop_setup_structure(AV1_COMP *cpi, |
| const EncodeFrameParams *const frame_params) { |
| RATE_CONTROL *const rc = &cpi->rc; |
| GF_GROUP *const gf_group = &cpi->gf_group; |
| TWO_PASS *const twopass = &cpi->twopass; |
| FRAME_INFO *const frame_info = &cpi->frame_info; |
| const int key_frame = (frame_params->frame_type == KEY_FRAME); |
| const FRAME_UPDATE_TYPE first_frame_update_type = |
| key_frame ? KF_UPDATE |
| : rc->source_alt_ref_active ? OVERLAY_UPDATE : GF_UPDATE; |
| gf_group->size = construct_multi_layer_gf_structure( |
| cpi, twopass, gf_group, rc, frame_info, rc->baseline_gf_interval, |
| first_frame_update_type); |
| |
| set_gop_ref_frame_map(gf_group); |
| |
| #if CHECK_GF_PARAMETER |
| check_frame_params(gf_group, rc->baseline_gf_interval); |
| #endif |
| } |
