/src/aom/av1/encoder/svc_layercontext.c
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1 | | /* |
2 | | * Copyright (c) 2019, Alliance for Open Media. All Rights Reserved. |
3 | | * |
4 | | * Use of this source code is governed by a BSD-style license |
5 | | * that can be found in the LICENSE file in the root of the source |
6 | | * tree. An additional intellectual property rights grant can be found |
7 | | * in the file PATENTS. All contributing project authors may |
8 | | * be found in the AUTHORS file in the root of the source tree. |
9 | | */ |
10 | | |
11 | | #include <math.h> |
12 | | |
13 | | #include "av1/encoder/encoder.h" |
14 | | #include "av1/encoder/encoder_alloc.h" |
15 | | |
16 | 0 | static void swap_ptr(void *a, void *b) { |
17 | 0 | void **a_p = (void **)a; |
18 | 0 | void **b_p = (void **)b; |
19 | 0 | void *c = *a_p; |
20 | 0 | *a_p = *b_p; |
21 | 0 | *b_p = c; |
22 | 0 | } |
23 | | |
24 | 0 | void av1_init_layer_context(AV1_COMP *const cpi) { |
25 | 0 | AV1_COMMON *const cm = &cpi->common; |
26 | 0 | const AV1EncoderConfig *const oxcf = &cpi->oxcf; |
27 | 0 | SVC *const svc = &cpi->svc; |
28 | 0 | int mi_rows = cpi->common.mi_params.mi_rows; |
29 | 0 | int mi_cols = cpi->common.mi_params.mi_cols; |
30 | 0 | svc->base_framerate = 30.0; |
31 | 0 | svc->current_superframe = 0; |
32 | 0 | svc->force_zero_mode_spatial_ref = 1; |
33 | 0 | svc->num_encoded_top_layer = 0; |
34 | 0 | svc->use_flexible_mode = 0; |
35 | |
|
36 | 0 | for (int sl = 0; sl < svc->number_spatial_layers; ++sl) { |
37 | 0 | for (int tl = 0; tl < svc->number_temporal_layers; ++tl) { |
38 | 0 | int layer = LAYER_IDS_TO_IDX(sl, tl, svc->number_temporal_layers); |
39 | 0 | LAYER_CONTEXT *const lc = &svc->layer_context[layer]; |
40 | 0 | RATE_CONTROL *const lrc = &lc->rc; |
41 | 0 | PRIMARY_RATE_CONTROL *const lp_rc = &lc->p_rc; |
42 | 0 | lrc->ni_av_qi = oxcf->rc_cfg.worst_allowed_q; |
43 | 0 | lp_rc->total_actual_bits = 0; |
44 | 0 | lrc->ni_tot_qi = 0; |
45 | 0 | lp_rc->tot_q = 0.0; |
46 | 0 | lp_rc->avg_q = 0.0; |
47 | 0 | lp_rc->ni_frames = 0; |
48 | 0 | lrc->decimation_count = 0; |
49 | 0 | lrc->decimation_factor = 0; |
50 | 0 | lrc->worst_quality = av1_quantizer_to_qindex(lc->max_q); |
51 | 0 | lrc->best_quality = av1_quantizer_to_qindex(lc->min_q); |
52 | 0 | lrc->rtc_external_ratectrl = 0; |
53 | 0 | for (int i = 0; i < RATE_FACTOR_LEVELS; ++i) { |
54 | 0 | lp_rc->rate_correction_factors[i] = 1.0; |
55 | 0 | } |
56 | 0 | lc->target_bandwidth = lc->layer_target_bitrate; |
57 | 0 | lp_rc->last_q[INTER_FRAME] = lrc->worst_quality; |
58 | 0 | lp_rc->avg_frame_qindex[INTER_FRAME] = lrc->worst_quality; |
59 | 0 | lp_rc->avg_frame_qindex[KEY_FRAME] = lrc->worst_quality; |
60 | 0 | lp_rc->buffer_level = |
61 | 0 | oxcf->rc_cfg.starting_buffer_level_ms * lc->target_bandwidth / 1000; |
62 | 0 | lp_rc->bits_off_target = lp_rc->buffer_level; |
63 | | // Initialize the cyclic refresh parameters. If spatial layers are used |
64 | | // (i.e., ss_number_layers > 1), these need to be updated per spatial |
65 | | // layer. Cyclic refresh is only applied on base temporal layer. |
66 | 0 | if (svc->number_spatial_layers > 1 && tl == 0) { |
67 | 0 | lc->sb_index = 0; |
68 | 0 | lc->actual_num_seg1_blocks = 0; |
69 | 0 | lc->actual_num_seg2_blocks = 0; |
70 | 0 | lc->counter_encode_maxq_scene_change = 0; |
71 | 0 | if (lc->map) aom_free(lc->map); |
72 | 0 | CHECK_MEM_ERROR(cm, lc->map, |
73 | 0 | aom_malloc(mi_rows * mi_cols * sizeof(*lc->map))); |
74 | 0 | memset(lc->map, 0, mi_rows * mi_cols); |
75 | 0 | } |
76 | 0 | } |
77 | 0 | svc->downsample_filter_type[sl] = BILINEAR; |
78 | 0 | svc->downsample_filter_phase[sl] = 8; |
79 | 0 | } |
80 | 0 | if (svc->number_spatial_layers == 3) { |
81 | 0 | svc->downsample_filter_type[0] = EIGHTTAP_SMOOTH; |
82 | 0 | } |
83 | 0 | svc->ref_frame_comp[0] = 0; |
84 | 0 | svc->ref_frame_comp[1] = 0; |
85 | 0 | svc->ref_frame_comp[2] = 0; |
86 | 0 | } |
87 | | |
88 | | // Update the layer context from a change_config() call. |
89 | | void av1_update_layer_context_change_config(AV1_COMP *const cpi, |
90 | 0 | const int64_t target_bandwidth) { |
91 | 0 | const RATE_CONTROL *const rc = &cpi->rc; |
92 | 0 | const PRIMARY_RATE_CONTROL *const p_rc = &cpi->ppi->p_rc; |
93 | 0 | SVC *const svc = &cpi->svc; |
94 | 0 | int layer = 0; |
95 | 0 | int64_t spatial_layer_target = 0; |
96 | 0 | float bitrate_alloc = 1.0; |
97 | 0 | for (int sl = 0; sl < svc->number_spatial_layers; ++sl) { |
98 | 0 | for (int tl = 0; tl < svc->number_temporal_layers; ++tl) { |
99 | 0 | layer = LAYER_IDS_TO_IDX(sl, tl, svc->number_temporal_layers); |
100 | 0 | LAYER_CONTEXT *const lc = &svc->layer_context[layer]; |
101 | 0 | svc->layer_context[layer].target_bandwidth = lc->layer_target_bitrate; |
102 | 0 | } |
103 | 0 | spatial_layer_target = svc->layer_context[layer].target_bandwidth; |
104 | 0 | for (int tl = 0; tl < svc->number_temporal_layers; ++tl) { |
105 | 0 | LAYER_CONTEXT *const lc = |
106 | 0 | &svc->layer_context[sl * svc->number_temporal_layers + tl]; |
107 | 0 | RATE_CONTROL *const lrc = &lc->rc; |
108 | 0 | PRIMARY_RATE_CONTROL *const lp_rc = &lc->p_rc; |
109 | 0 | lc->spatial_layer_target_bandwidth = spatial_layer_target; |
110 | 0 | bitrate_alloc = (float)lc->target_bandwidth / target_bandwidth; |
111 | 0 | lp_rc->starting_buffer_level = |
112 | 0 | (int64_t)(p_rc->starting_buffer_level * bitrate_alloc); |
113 | 0 | lp_rc->optimal_buffer_level = |
114 | 0 | (int64_t)(p_rc->optimal_buffer_level * bitrate_alloc); |
115 | 0 | lp_rc->maximum_buffer_size = |
116 | 0 | (int64_t)(p_rc->maximum_buffer_size * bitrate_alloc); |
117 | 0 | lp_rc->bits_off_target = |
118 | 0 | AOMMIN(lp_rc->bits_off_target, lp_rc->maximum_buffer_size); |
119 | 0 | lp_rc->buffer_level = |
120 | 0 | AOMMIN(lp_rc->buffer_level, lp_rc->maximum_buffer_size); |
121 | 0 | lc->framerate = cpi->framerate / lc->framerate_factor; |
122 | 0 | lrc->avg_frame_bandwidth = |
123 | 0 | (int)round(lc->target_bandwidth / lc->framerate); |
124 | 0 | lrc->max_frame_bandwidth = rc->max_frame_bandwidth; |
125 | 0 | lrc->rtc_external_ratectrl = rc->rtc_external_ratectrl; |
126 | 0 | lrc->worst_quality = av1_quantizer_to_qindex(lc->max_q); |
127 | 0 | lrc->best_quality = av1_quantizer_to_qindex(lc->min_q); |
128 | 0 | } |
129 | 0 | } |
130 | 0 | } |
131 | | |
132 | | /*!\brief Return layer context for current layer. |
133 | | * |
134 | | * \ingroup rate_control |
135 | | * \param[in] cpi Top level encoder structure |
136 | | * |
137 | | * \return LAYER_CONTEXT for current layer. |
138 | | */ |
139 | 0 | static LAYER_CONTEXT *get_layer_context(AV1_COMP *const cpi) { |
140 | 0 | return &cpi->svc.layer_context[cpi->svc.spatial_layer_id * |
141 | 0 | cpi->svc.number_temporal_layers + |
142 | 0 | cpi->svc.temporal_layer_id]; |
143 | 0 | } |
144 | | |
145 | 0 | void av1_update_temporal_layer_framerate(AV1_COMP *const cpi) { |
146 | 0 | SVC *const svc = &cpi->svc; |
147 | 0 | LAYER_CONTEXT *const lc = get_layer_context(cpi); |
148 | 0 | RATE_CONTROL *const lrc = &lc->rc; |
149 | 0 | const int tl = svc->temporal_layer_id; |
150 | 0 | lc->framerate = cpi->framerate / lc->framerate_factor; |
151 | 0 | lrc->avg_frame_bandwidth = (int)round(lc->target_bandwidth / lc->framerate); |
152 | 0 | lrc->max_frame_bandwidth = cpi->rc.max_frame_bandwidth; |
153 | | // Update the average layer frame size (non-cumulative per-frame-bw). |
154 | 0 | if (tl == 0) { |
155 | 0 | lc->avg_frame_size = lrc->avg_frame_bandwidth; |
156 | 0 | } else { |
157 | 0 | int prev_layer = svc->spatial_layer_id * svc->number_temporal_layers + |
158 | 0 | svc->temporal_layer_id - 1; |
159 | 0 | LAYER_CONTEXT *const lcprev = &svc->layer_context[prev_layer]; |
160 | 0 | const double prev_layer_framerate = |
161 | 0 | cpi->framerate / lcprev->framerate_factor; |
162 | 0 | const int64_t prev_layer_target_bandwidth = lcprev->layer_target_bitrate; |
163 | 0 | lc->avg_frame_size = |
164 | 0 | (int)round((lc->target_bandwidth - prev_layer_target_bandwidth) / |
165 | 0 | (lc->framerate - prev_layer_framerate)); |
166 | 0 | } |
167 | 0 | } |
168 | | |
169 | 0 | void av1_restore_layer_context(AV1_COMP *const cpi) { |
170 | 0 | SVC *const svc = &cpi->svc; |
171 | 0 | const AV1_COMMON *const cm = &cpi->common; |
172 | 0 | LAYER_CONTEXT *const lc = get_layer_context(cpi); |
173 | 0 | const int old_frame_since_key = cpi->rc.frames_since_key; |
174 | 0 | const int old_frame_to_key = cpi->rc.frames_to_key; |
175 | | // Restore layer rate control. |
176 | 0 | cpi->rc = lc->rc; |
177 | 0 | cpi->ppi->p_rc = lc->p_rc; |
178 | 0 | cpi->oxcf.rc_cfg.target_bandwidth = lc->target_bandwidth; |
179 | 0 | cpi->gf_frame_index = 0; |
180 | 0 | cpi->mv_search_params.max_mv_magnitude = lc->max_mv_magnitude; |
181 | 0 | if (cpi->mv_search_params.max_mv_magnitude == 0) |
182 | 0 | cpi->mv_search_params.max_mv_magnitude = AOMMAX(cm->width, cm->height); |
183 | | // Reset the frames_since_key and frames_to_key counters to their values |
184 | | // before the layer restore. Keep these defined for the stream (not layer). |
185 | 0 | cpi->rc.frames_since_key = old_frame_since_key; |
186 | 0 | cpi->rc.frames_to_key = old_frame_to_key; |
187 | | // For spatial-svc, allow cyclic-refresh to be applied on the spatial layers, |
188 | | // for the base temporal layer. |
189 | 0 | if (cpi->oxcf.q_cfg.aq_mode == CYCLIC_REFRESH_AQ && |
190 | 0 | svc->number_spatial_layers > 1 && svc->temporal_layer_id == 0) { |
191 | 0 | CYCLIC_REFRESH *const cr = cpi->cyclic_refresh; |
192 | 0 | swap_ptr(&cr->map, &lc->map); |
193 | 0 | cr->sb_index = lc->sb_index; |
194 | 0 | cr->actual_num_seg1_blocks = lc->actual_num_seg1_blocks; |
195 | 0 | cr->actual_num_seg2_blocks = lc->actual_num_seg2_blocks; |
196 | 0 | } |
197 | 0 | svc->skip_mvsearch_last = 0; |
198 | 0 | svc->skip_mvsearch_gf = 0; |
199 | | // For each reference (LAST/GOLDEN) set the skip_mvsearch_last/gf frame flags. |
200 | | // This is to skip searching mv for that reference if it was last |
201 | | // refreshed (i.e., buffer slot holding that reference was refreshed) on the |
202 | | // previous spatial layer(s) at the same time (current_superframe). |
203 | 0 | if (svc->set_ref_frame_config && svc->force_zero_mode_spatial_ref) { |
204 | 0 | int ref_frame_idx = svc->ref_idx[LAST_FRAME - 1]; |
205 | 0 | if (svc->buffer_time_index[ref_frame_idx] == svc->current_superframe && |
206 | 0 | svc->buffer_spatial_layer[ref_frame_idx] <= svc->spatial_layer_id - 1) |
207 | 0 | svc->skip_mvsearch_last = 1; |
208 | 0 | ref_frame_idx = svc->ref_idx[GOLDEN_FRAME - 1]; |
209 | 0 | if (svc->buffer_time_index[ref_frame_idx] == svc->current_superframe && |
210 | 0 | svc->buffer_spatial_layer[ref_frame_idx] <= svc->spatial_layer_id - 1) |
211 | 0 | svc->skip_mvsearch_gf = 1; |
212 | 0 | } |
213 | 0 | } |
214 | | |
215 | 0 | void av1_save_layer_context(AV1_COMP *const cpi) { |
216 | 0 | SVC *const svc = &cpi->svc; |
217 | 0 | const AV1_COMMON *const cm = &cpi->common; |
218 | 0 | LAYER_CONTEXT *lc = get_layer_context(cpi); |
219 | 0 | lc->rc = cpi->rc; |
220 | 0 | lc->p_rc = cpi->ppi->p_rc; |
221 | 0 | lc->target_bandwidth = (int)cpi->oxcf.rc_cfg.target_bandwidth; |
222 | 0 | lc->group_index = cpi->gf_frame_index; |
223 | 0 | lc->max_mv_magnitude = cpi->mv_search_params.max_mv_magnitude; |
224 | 0 | if (svc->spatial_layer_id == 0) svc->base_framerate = cpi->framerate; |
225 | | // For spatial-svc, allow cyclic-refresh to be applied on the spatial layers, |
226 | | // for the base temporal layer. |
227 | 0 | if (cpi->oxcf.q_cfg.aq_mode == CYCLIC_REFRESH_AQ && |
228 | 0 | cpi->svc.number_spatial_layers > 1 && svc->temporal_layer_id == 0) { |
229 | 0 | CYCLIC_REFRESH *const cr = cpi->cyclic_refresh; |
230 | 0 | signed char *temp = lc->map; |
231 | 0 | lc->map = cr->map; |
232 | 0 | cr->map = temp; |
233 | 0 | lc->sb_index = cr->sb_index; |
234 | 0 | lc->actual_num_seg1_blocks = cr->actual_num_seg1_blocks; |
235 | 0 | lc->actual_num_seg2_blocks = cr->actual_num_seg2_blocks; |
236 | 0 | } |
237 | | // For any buffer slot that is refreshed, update it with |
238 | | // the spatial_layer_id and the current_superframe. |
239 | 0 | if (cpi->common.current_frame.frame_type == KEY_FRAME) { |
240 | | // All slots are refreshed on KEY. |
241 | 0 | for (unsigned int i = 0; i < REF_FRAMES; i++) { |
242 | 0 | svc->buffer_time_index[i] = svc->current_superframe; |
243 | 0 | svc->buffer_spatial_layer[i] = svc->spatial_layer_id; |
244 | 0 | } |
245 | 0 | } else if (cpi->svc.set_ref_frame_config) { |
246 | 0 | for (unsigned int i = 0; i < INTER_REFS_PER_FRAME; i++) { |
247 | 0 | int ref_frame_map_idx = svc->ref_idx[i]; |
248 | 0 | if (cpi->svc.refresh[ref_frame_map_idx]) { |
249 | 0 | svc->buffer_time_index[ref_frame_map_idx] = svc->current_superframe; |
250 | 0 | svc->buffer_spatial_layer[ref_frame_map_idx] = svc->spatial_layer_id; |
251 | 0 | } |
252 | 0 | } |
253 | 0 | } |
254 | 0 | for (unsigned int i = 0; i < REF_FRAMES; i++) { |
255 | 0 | if (frame_is_intra_only(cm) || |
256 | 0 | cm->current_frame.refresh_frame_flags & (1 << i)) { |
257 | 0 | svc->spatial_layer_fb[i] = svc->spatial_layer_id; |
258 | 0 | svc->temporal_layer_fb[i] = svc->temporal_layer_id; |
259 | 0 | } |
260 | 0 | } |
261 | 0 | if (svc->spatial_layer_id == svc->number_spatial_layers - 1) |
262 | 0 | svc->current_superframe++; |
263 | 0 | } |
264 | | |
265 | 0 | int av1_svc_primary_ref_frame(const AV1_COMP *const cpi) { |
266 | 0 | const SVC *const svc = &cpi->svc; |
267 | 0 | const AV1_COMMON *const cm = &cpi->common; |
268 | 0 | int wanted_fb = -1; |
269 | 0 | int primary_ref_frame = PRIMARY_REF_NONE; |
270 | 0 | for (unsigned int i = 0; i < REF_FRAMES; i++) { |
271 | 0 | if (svc->spatial_layer_fb[i] == svc->spatial_layer_id && |
272 | 0 | svc->temporal_layer_fb[i] == svc->temporal_layer_id) { |
273 | 0 | wanted_fb = i; |
274 | 0 | break; |
275 | 0 | } |
276 | 0 | } |
277 | 0 | if (wanted_fb != -1) { |
278 | 0 | for (int ref_frame = LAST_FRAME; ref_frame <= ALTREF_FRAME; ref_frame++) { |
279 | 0 | if (get_ref_frame_map_idx(cm, ref_frame) == wanted_fb) { |
280 | 0 | primary_ref_frame = ref_frame - LAST_FRAME; |
281 | 0 | break; |
282 | 0 | } |
283 | 0 | } |
284 | 0 | } |
285 | 0 | return primary_ref_frame; |
286 | 0 | } |
287 | | |
288 | 0 | void av1_free_svc_cyclic_refresh(AV1_COMP *const cpi) { |
289 | 0 | SVC *const svc = &cpi->svc; |
290 | 0 | for (int sl = 0; sl < svc->number_spatial_layers; ++sl) { |
291 | 0 | for (int tl = 0; tl < svc->number_temporal_layers; ++tl) { |
292 | 0 | int layer = LAYER_IDS_TO_IDX(sl, tl, svc->number_temporal_layers); |
293 | 0 | LAYER_CONTEXT *const lc = &svc->layer_context[layer]; |
294 | 0 | if (lc->map) aom_free(lc->map); |
295 | 0 | } |
296 | 0 | } |
297 | 0 | } |
298 | | |
299 | 0 | void av1_svc_reset_temporal_layers(AV1_COMP *const cpi, int is_key) { |
300 | 0 | SVC *const svc = &cpi->svc; |
301 | 0 | LAYER_CONTEXT *lc = NULL; |
302 | 0 | for (int sl = 0; sl < svc->number_spatial_layers; ++sl) { |
303 | 0 | for (int tl = 0; tl < svc->number_temporal_layers; ++tl) { |
304 | 0 | lc = &cpi->svc.layer_context[sl * svc->number_temporal_layers + tl]; |
305 | 0 | if (is_key) lc->frames_from_key_frame = 0; |
306 | 0 | } |
307 | 0 | } |
308 | 0 | av1_update_temporal_layer_framerate(cpi); |
309 | 0 | av1_restore_layer_context(cpi); |
310 | 0 | } |
311 | | |
312 | | void av1_get_layer_resolution(const int width_org, const int height_org, |
313 | | const int num, const int den, int *width_out, |
314 | 0 | int *height_out) { |
315 | 0 | int w, h; |
316 | 0 | if (width_out == NULL || height_out == NULL || den == 0) return; |
317 | 0 | w = width_org * num / den; |
318 | 0 | h = height_org * num / den; |
319 | | // Make height and width even. |
320 | 0 | w += w % 2; |
321 | 0 | h += h % 2; |
322 | 0 | *width_out = w; |
323 | 0 | *height_out = h; |
324 | 0 | } |
325 | | |
326 | 0 | void av1_one_pass_cbr_svc_start_layer(AV1_COMP *const cpi) { |
327 | 0 | SVC *const svc = &cpi->svc; |
328 | 0 | LAYER_CONTEXT *lc = NULL; |
329 | 0 | int width = 0, height = 0; |
330 | 0 | lc = &svc->layer_context[svc->spatial_layer_id * svc->number_temporal_layers + |
331 | 0 | svc->temporal_layer_id]; |
332 | 0 | av1_get_layer_resolution(cpi->oxcf.frm_dim_cfg.width, |
333 | 0 | cpi->oxcf.frm_dim_cfg.height, lc->scaling_factor_num, |
334 | 0 | lc->scaling_factor_den, &width, &height); |
335 | | // Use Eightap_smooth for low resolutions. |
336 | 0 | if (width * height <= 320 * 240) |
337 | 0 | svc->downsample_filter_type[svc->spatial_layer_id] = EIGHTTAP_SMOOTH; |
338 | |
|
339 | 0 | cpi->common.width = width; |
340 | 0 | cpi->common.height = height; |
341 | 0 | alloc_mb_mode_info_buffers(cpi); |
342 | 0 | av1_update_frame_size(cpi); |
343 | 0 | if (svc->spatial_layer_id == 0) svc->high_source_sad_superframe = 0; |
344 | 0 | } |
345 | | |
346 | | enum { |
347 | | SVC_LAST_FRAME = 0, |
348 | | SVC_LAST2_FRAME, |
349 | | SVC_LAST3_FRAME, |
350 | | SVC_GOLDEN_FRAME, |
351 | | SVC_BWDREF_FRAME, |
352 | | SVC_ALTREF2_FRAME, |
353 | | SVC_ALTREF_FRAME |
354 | | }; |
355 | | |
356 | | // For fixed svc mode: fixed pattern is set based on the number of |
357 | | // spatial and temporal layers, and the ksvc_fixed_mode. |
358 | 0 | void av1_set_svc_fixed_mode(AV1_COMP *const cpi) { |
359 | 0 | SVC *const svc = &cpi->svc; |
360 | 0 | int i; |
361 | 0 | assert(svc->use_flexible_mode == 0); |
362 | | // Fixed SVC mode only supports at most 3 spatial or temporal layers. |
363 | 0 | assert(svc->number_spatial_layers >= 1 && svc->number_spatial_layers <= 3 && |
364 | 0 | svc->number_temporal_layers >= 1 && svc->number_temporal_layers <= 3); |
365 | 0 | svc->set_ref_frame_config = 1; |
366 | 0 | int superframe_cnt = svc->current_superframe; |
367 | | // Set the reference map buffer idx for the 7 references: |
368 | | // LAST_FRAME (0), LAST2_FRAME(1), LAST3_FRAME(2), GOLDEN_FRAME(3), |
369 | | // BWDREF_FRAME(4), ALTREF2_FRAME(5), ALTREF_FRAME(6). |
370 | 0 | for (i = 0; i < INTER_REFS_PER_FRAME; i++) svc->ref_idx[i] = i; |
371 | 0 | for (i = 0; i < INTER_REFS_PER_FRAME; i++) svc->reference[i] = 0; |
372 | 0 | for (i = 0; i < REF_FRAMES; i++) svc->refresh[i] = 0; |
373 | | // Always reference LAST, and reference GOLDEN on SL > 0. |
374 | | // For KSVC: GOLDEN reference will be removed on INTER_FRAMES later |
375 | | // when frame_type is set. |
376 | 0 | svc->reference[SVC_LAST_FRAME] = 1; |
377 | 0 | if (svc->spatial_layer_id > 0) svc->reference[SVC_GOLDEN_FRAME] = 1; |
378 | 0 | if (svc->temporal_layer_id == 0) { |
379 | | // Base temporal layer. |
380 | 0 | if (svc->spatial_layer_id == 0) { |
381 | | // Set all buffer_idx to 0. Update slot 0 (LAST). |
382 | 0 | for (i = 0; i < INTER_REFS_PER_FRAME; i++) svc->ref_idx[i] = 0; |
383 | 0 | svc->refresh[0] = 1; |
384 | 0 | } else if (svc->spatial_layer_id == 1) { |
385 | | // Set buffer_idx for LAST to slot 1, GOLDEN (and all other refs) to |
386 | | // slot 0. Update slot 1 (LAST). |
387 | 0 | for (i = 0; i < INTER_REFS_PER_FRAME; i++) svc->ref_idx[i] = 0; |
388 | 0 | svc->ref_idx[SVC_LAST_FRAME] = 1; |
389 | 0 | svc->refresh[1] = 1; |
390 | 0 | } else if (svc->spatial_layer_id == 2) { |
391 | | // Set buffer_idx for LAST to slot 2, GOLDEN (and all other refs) to |
392 | | // slot 1. Update slot 2 (LAST). |
393 | 0 | for (i = 0; i < INTER_REFS_PER_FRAME; i++) svc->ref_idx[i] = 1; |
394 | 0 | svc->ref_idx[SVC_LAST_FRAME] = 2; |
395 | 0 | svc->refresh[2] = 1; |
396 | 0 | } |
397 | 0 | } else if (svc->temporal_layer_id == 2 && (superframe_cnt - 1) % 4 == 0) { |
398 | | // First top temporal enhancement layer. |
399 | 0 | if (svc->spatial_layer_id == 0) { |
400 | | // Reference LAST (slot 0). |
401 | | // Set GOLDEN to slot 3 and update slot 3. |
402 | | // Set all other buffer_idx to slot 0. |
403 | 0 | for (i = 0; i < INTER_REFS_PER_FRAME; i++) svc->ref_idx[i] = 0; |
404 | 0 | if (svc->spatial_layer_id < svc->number_spatial_layers - 1) { |
405 | 0 | svc->ref_idx[SVC_GOLDEN_FRAME] = 3; |
406 | 0 | svc->refresh[3] = 1; |
407 | 0 | } |
408 | 0 | } else if (svc->spatial_layer_id == 1) { |
409 | | // Reference LAST and GOLDEN. Set buffer_idx for LAST to slot 1, |
410 | | // GOLDEN (and all other refs) to slot 3. |
411 | | // Set LAST2 to slot 4 and Update slot 4. |
412 | 0 | for (i = 0; i < INTER_REFS_PER_FRAME; i++) svc->ref_idx[i] = 3; |
413 | 0 | svc->ref_idx[SVC_LAST_FRAME] = 1; |
414 | 0 | if (svc->spatial_layer_id < svc->number_spatial_layers - 1) { |
415 | 0 | svc->ref_idx[SVC_LAST2_FRAME] = 4; |
416 | 0 | svc->refresh[4] = 1; |
417 | 0 | } |
418 | 0 | } else if (svc->spatial_layer_id == 2) { |
419 | | // Reference LAST and GOLDEN. Set buffer_idx for LAST to slot 2, |
420 | | // GOLDEN (and all other refs) to slot 4. |
421 | | // No update. |
422 | 0 | for (i = 0; i < INTER_REFS_PER_FRAME; i++) svc->ref_idx[i] = 4; |
423 | 0 | svc->ref_idx[SVC_LAST_FRAME] = 2; |
424 | 0 | } |
425 | 0 | } else if (svc->temporal_layer_id == 1) { |
426 | | // Middle temporal enhancement layer. |
427 | 0 | if (svc->spatial_layer_id == 0) { |
428 | | // Reference LAST. |
429 | | // Set all buffer_idx to 0. |
430 | | // Set GOLDEN to slot 5 and update slot 5. |
431 | 0 | for (i = 0; i < INTER_REFS_PER_FRAME; i++) svc->ref_idx[i] = 0; |
432 | 0 | if (svc->temporal_layer_id < svc->number_temporal_layers - 1) { |
433 | 0 | svc->ref_idx[SVC_GOLDEN_FRAME] = 5; |
434 | 0 | svc->refresh[5] = 1; |
435 | 0 | } |
436 | 0 | } else if (svc->spatial_layer_id == 1) { |
437 | | // Reference LAST and GOLDEN. Set buffer_idx for LAST to slot 1, |
438 | | // GOLDEN (and all other refs) to slot 5. |
439 | | // Set LAST3 to slot 6 and update slot 6. |
440 | 0 | for (i = 0; i < INTER_REFS_PER_FRAME; i++) svc->ref_idx[i] = 5; |
441 | 0 | svc->ref_idx[SVC_LAST_FRAME] = 1; |
442 | 0 | if (svc->temporal_layer_id < svc->number_temporal_layers - 1) { |
443 | 0 | svc->ref_idx[SVC_LAST3_FRAME] = 6; |
444 | 0 | svc->refresh[6] = 1; |
445 | 0 | } |
446 | 0 | } else if (svc->spatial_layer_id == 2) { |
447 | | // Reference LAST and GOLDEN. Set buffer_idx for LAST to slot 2, |
448 | | // GOLDEN (and all other refs) to slot 6. |
449 | | // Set LAST3 to slot 7 and update slot 7. |
450 | 0 | for (i = 0; i < INTER_REFS_PER_FRAME; i++) svc->ref_idx[i] = 6; |
451 | 0 | svc->ref_idx[SVC_LAST_FRAME] = 2; |
452 | 0 | if (svc->temporal_layer_id < svc->number_temporal_layers - 1) { |
453 | 0 | svc->ref_idx[SVC_LAST3_FRAME] = 7; |
454 | 0 | svc->refresh[7] = 1; |
455 | 0 | } |
456 | 0 | } |
457 | 0 | } else if (svc->temporal_layer_id == 2 && (superframe_cnt - 3) % 4 == 0) { |
458 | | // Second top temporal enhancement layer. |
459 | 0 | if (svc->spatial_layer_id == 0) { |
460 | | // Set LAST to slot 5 and reference LAST. |
461 | | // Set GOLDEN to slot 3 and update slot 3. |
462 | | // Set all other buffer_idx to 0. |
463 | 0 | for (i = 0; i < INTER_REFS_PER_FRAME; i++) svc->ref_idx[i] = 0; |
464 | 0 | svc->ref_idx[SVC_LAST_FRAME] = 5; |
465 | 0 | if (svc->spatial_layer_id < svc->number_spatial_layers - 1) { |
466 | 0 | svc->ref_idx[SVC_GOLDEN_FRAME] = 3; |
467 | 0 | svc->refresh[3] = 1; |
468 | 0 | } |
469 | 0 | } else if (svc->spatial_layer_id == 1) { |
470 | | // Reference LAST and GOLDEN. Set buffer_idx for LAST to slot 6, |
471 | | // GOLDEN to slot 3. Set LAST2 to slot 4 and update slot 4. |
472 | 0 | for (i = 0; i < INTER_REFS_PER_FRAME; i++) svc->ref_idx[i] = 0; |
473 | 0 | svc->ref_idx[SVC_LAST_FRAME] = 6; |
474 | 0 | svc->ref_idx[SVC_GOLDEN_FRAME] = 3; |
475 | 0 | if (svc->spatial_layer_id < svc->number_spatial_layers - 1) { |
476 | 0 | svc->ref_idx[SVC_LAST2_FRAME] = 4; |
477 | 0 | svc->refresh[4] = 1; |
478 | 0 | } |
479 | 0 | } else if (svc->spatial_layer_id == 2) { |
480 | | // Reference LAST and GOLDEN. Set buffer_idx for LAST to slot 7, |
481 | | // GOLDEN to slot 4. No update. |
482 | 0 | for (i = 0; i < INTER_REFS_PER_FRAME; i++) svc->ref_idx[i] = 0; |
483 | 0 | svc->ref_idx[SVC_LAST_FRAME] = 7; |
484 | 0 | svc->ref_idx[SVC_GOLDEN_FRAME] = 4; |
485 | 0 | } |
486 | 0 | } |
487 | 0 | } |
488 | | |
489 | 0 | void av1_svc_check_reset_layer_rc_flag(AV1_COMP *const cpi) { |
490 | 0 | SVC *const svc = &cpi->svc; |
491 | 0 | for (int sl = 0; sl < svc->number_spatial_layers; ++sl) { |
492 | | // Check for reset based on avg_frame_bandwidth for spatial layer sl. |
493 | 0 | int layer = LAYER_IDS_TO_IDX(sl, svc->number_temporal_layers - 1, |
494 | 0 | svc->number_temporal_layers); |
495 | 0 | LAYER_CONTEXT *lc = &svc->layer_context[layer]; |
496 | 0 | RATE_CONTROL *lrc = &lc->rc; |
497 | 0 | if (lrc->avg_frame_bandwidth > (3 * lrc->prev_avg_frame_bandwidth >> 1) || |
498 | 0 | lrc->avg_frame_bandwidth < (lrc->prev_avg_frame_bandwidth >> 1)) { |
499 | | // Reset for all temporal layers with spatial layer sl. |
500 | 0 | for (int tl = 0; tl < svc->number_temporal_layers; ++tl) { |
501 | 0 | int layer2 = LAYER_IDS_TO_IDX(sl, tl, svc->number_temporal_layers); |
502 | 0 | LAYER_CONTEXT *lc2 = &svc->layer_context[layer2]; |
503 | 0 | RATE_CONTROL *lrc2 = &lc2->rc; |
504 | 0 | PRIMARY_RATE_CONTROL *lp_rc2 = &lc2->p_rc; |
505 | 0 | PRIMARY_RATE_CONTROL *const lp_rc = &lc2->p_rc; |
506 | 0 | lrc2->rc_1_frame = 0; |
507 | 0 | lrc2->rc_2_frame = 0; |
508 | 0 | lp_rc2->bits_off_target = lp_rc->optimal_buffer_level; |
509 | 0 | lp_rc2->buffer_level = lp_rc->optimal_buffer_level; |
510 | 0 | } |
511 | 0 | } |
512 | 0 | } |
513 | 0 | } |