| /* |
| * 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 <limits.h> |
| #include <math.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #include "./vpx_dsp_rtcd.h" |
| #include "vpx_dsp/vpx_dsp_common.h" |
| #include "vpx_mem/vpx_mem.h" |
| #include "vpx_ports/mem.h" |
| #include "vpx_ports/system_state.h" |
| |
| #include "vp9/common/vp9_alloccommon.h" |
| #include "vp9/encoder/vp9_aq_cyclicrefresh.h" |
| #include "vp9/common/vp9_common.h" |
| #include "vp9/common/vp9_entropymode.h" |
| #include "vp9/common/vp9_quant_common.h" |
| #include "vp9/common/vp9_seg_common.h" |
| |
| #include "vp9/encoder/vp9_encodemv.h" |
| #include "vp9/encoder/vp9_ratectrl.h" |
| |
| // Max rate per frame for 1080P and below encodes if no level requirement given. |
| // For larger formats limit to MAX_MB_RATE bits per MB |
| // 4Mbits is derived from the level requirement for level 4 (1080P 30) which |
| // requires that HW can sustain a rate of 16Mbits over a 4 frame group. |
| // If a lower level requirement is specified then this may over ride this value. |
| #define MAX_MB_RATE 250 |
| #define MAXRATE_1080P 4000000 |
| |
| #define DEFAULT_KF_BOOST 2000 |
| #define DEFAULT_GF_BOOST 2000 |
| |
| #define LIMIT_QRANGE_FOR_ALTREF_AND_KEY 1 |
| |
| #define MIN_BPB_FACTOR 0.005 |
| #define MAX_BPB_FACTOR 50 |
| |
| #if CONFIG_VP9_HIGHBITDEPTH |
| #define ASSIGN_MINQ_TABLE(bit_depth, name) \ |
| do { \ |
| switch (bit_depth) { \ |
| case VPX_BITS_8: name = name##_8; break; \ |
| case VPX_BITS_10: name = name##_10; break; \ |
| default: \ |
| assert(bit_depth == VPX_BITS_12); \ |
| name = name##_12; \ |
| break; \ |
| } \ |
| } while (0) |
| #else |
| #define ASSIGN_MINQ_TABLE(bit_depth, name) \ |
| do { \ |
| (void)bit_depth; \ |
| name = name##_8; \ |
| } while (0) |
| #endif |
| |
| // Tables relating active max Q to active min Q |
| static int kf_low_motion_minq_8[QINDEX_RANGE]; |
| static int kf_high_motion_minq_8[QINDEX_RANGE]; |
| static int arfgf_low_motion_minq_8[QINDEX_RANGE]; |
| static int arfgf_high_motion_minq_8[QINDEX_RANGE]; |
| static int inter_minq_8[QINDEX_RANGE]; |
| static int rtc_minq_8[QINDEX_RANGE]; |
| |
| #if CONFIG_VP9_HIGHBITDEPTH |
| static int kf_low_motion_minq_10[QINDEX_RANGE]; |
| static int kf_high_motion_minq_10[QINDEX_RANGE]; |
| static int arfgf_low_motion_minq_10[QINDEX_RANGE]; |
| static int arfgf_high_motion_minq_10[QINDEX_RANGE]; |
| static int inter_minq_10[QINDEX_RANGE]; |
| static int rtc_minq_10[QINDEX_RANGE]; |
| static int kf_low_motion_minq_12[QINDEX_RANGE]; |
| static int kf_high_motion_minq_12[QINDEX_RANGE]; |
| static int arfgf_low_motion_minq_12[QINDEX_RANGE]; |
| static int arfgf_high_motion_minq_12[QINDEX_RANGE]; |
| static int inter_minq_12[QINDEX_RANGE]; |
| static int rtc_minq_12[QINDEX_RANGE]; |
| #endif |
| |
| #ifdef AGGRESSIVE_VBR |
| static int gf_high = 2400; |
| static int gf_low = 400; |
| static int kf_high = 4000; |
| static int kf_low = 400; |
| #else |
| static int gf_high = 2000; |
| static int gf_low = 400; |
| static int kf_high = 4800; |
| static int kf_low = 300; |
| #endif |
| |
| // Functions to compute the active minq lookup table entries based on a |
| // formulaic approach to facilitate easier adjustment of the Q tables. |
| // The formulae were derived from computing a 3rd order polynomial best |
| // fit to the original data (after plotting real maxq vs minq (not q index)) |
| static int get_minq_index(double maxq, double x3, double x2, double x1, |
| vpx_bit_depth_t bit_depth) { |
| int i; |
| const double minqtarget = VPXMIN(((x3 * maxq + x2) * maxq + x1) * maxq, maxq); |
| |
| // Special case handling to deal with the step from q2.0 |
| // down to lossless mode represented by q 1.0. |
| if (minqtarget <= 2.0) return 0; |
| |
| for (i = 0; i < QINDEX_RANGE; i++) { |
| if (minqtarget <= vp9_convert_qindex_to_q(i, bit_depth)) return i; |
| } |
| |
| return QINDEX_RANGE - 1; |
| } |
| |
| static void init_minq_luts(int *kf_low_m, int *kf_high_m, int *arfgf_low, |
| int *arfgf_high, int *inter, int *rtc, |
| vpx_bit_depth_t bit_depth) { |
| int i; |
| for (i = 0; i < QINDEX_RANGE; i++) { |
| const double maxq = vp9_convert_qindex_to_q(i, bit_depth); |
| kf_low_m[i] = get_minq_index(maxq, 0.000001, -0.0004, 0.150, bit_depth); |
| kf_high_m[i] = get_minq_index(maxq, 0.0000021, -0.00125, 0.45, bit_depth); |
| #ifdef AGGRESSIVE_VBR |
| arfgf_low[i] = get_minq_index(maxq, 0.0000015, -0.0009, 0.275, bit_depth); |
| inter[i] = get_minq_index(maxq, 0.00000271, -0.00113, 0.80, bit_depth); |
| #else |
| arfgf_low[i] = get_minq_index(maxq, 0.0000015, -0.0009, 0.30, bit_depth); |
| inter[i] = get_minq_index(maxq, 0.00000271, -0.00113, 0.70, bit_depth); |
| #endif |
| arfgf_high[i] = get_minq_index(maxq, 0.0000021, -0.00125, 0.55, bit_depth); |
| rtc[i] = get_minq_index(maxq, 0.00000271, -0.00113, 0.70, bit_depth); |
| } |
| } |
| |
| void vp9_rc_init_minq_luts(void) { |
| init_minq_luts(kf_low_motion_minq_8, kf_high_motion_minq_8, |
| arfgf_low_motion_minq_8, arfgf_high_motion_minq_8, |
| inter_minq_8, rtc_minq_8, VPX_BITS_8); |
| #if CONFIG_VP9_HIGHBITDEPTH |
| init_minq_luts(kf_low_motion_minq_10, kf_high_motion_minq_10, |
| arfgf_low_motion_minq_10, arfgf_high_motion_minq_10, |
| inter_minq_10, rtc_minq_10, VPX_BITS_10); |
| init_minq_luts(kf_low_motion_minq_12, kf_high_motion_minq_12, |
| arfgf_low_motion_minq_12, arfgf_high_motion_minq_12, |
| inter_minq_12, rtc_minq_12, VPX_BITS_12); |
| #endif |
| } |
| |
| // These functions use formulaic calculations to make playing with the |
| // quantizer tables easier. If necessary they can be replaced by lookup |
| // tables if and when things settle down in the experimental bitstream |
| double vp9_convert_qindex_to_q(int qindex, vpx_bit_depth_t bit_depth) { |
| // Convert the index to a real Q value (scaled down to match old Q values) |
| #if CONFIG_VP9_HIGHBITDEPTH |
| switch (bit_depth) { |
| case VPX_BITS_8: return vp9_ac_quant(qindex, 0, bit_depth) / 4.0; |
| case VPX_BITS_10: return vp9_ac_quant(qindex, 0, bit_depth) / 16.0; |
| default: |
| assert(bit_depth == VPX_BITS_12); |
| return vp9_ac_quant(qindex, 0, bit_depth) / 64.0; |
| } |
| #else |
| return vp9_ac_quant(qindex, 0, bit_depth) / 4.0; |
| #endif |
| } |
| |
| int vp9_convert_q_to_qindex(double q_val, vpx_bit_depth_t bit_depth) { |
| int i; |
| |
| for (i = 0; i < QINDEX_RANGE; ++i) |
| if (vp9_convert_qindex_to_q(i, bit_depth) >= q_val) break; |
| |
| if (i == QINDEX_RANGE) i--; |
| |
| return i; |
| } |
| |
| int vp9_rc_bits_per_mb(FRAME_TYPE frame_type, int qindex, |
| double correction_factor, vpx_bit_depth_t bit_depth) { |
| const double q = vp9_convert_qindex_to_q(qindex, bit_depth); |
| int enumerator = frame_type == KEY_FRAME ? 2700000 : 1800000; |
| |
| assert(correction_factor <= MAX_BPB_FACTOR && |
| correction_factor >= MIN_BPB_FACTOR); |
| |
| // q based adjustment to baseline enumerator |
| enumerator += (int)(enumerator * q) >> 12; |
| return (int)(enumerator * correction_factor / q); |
| } |
| |
| int vp9_estimate_bits_at_q(FRAME_TYPE frame_type, int q, int mbs, |
| double correction_factor, |
| vpx_bit_depth_t bit_depth) { |
| const int bpm = |
| (int)(vp9_rc_bits_per_mb(frame_type, q, correction_factor, bit_depth)); |
| return VPXMAX(FRAME_OVERHEAD_BITS, |
| (int)(((uint64_t)bpm * mbs) >> BPER_MB_NORMBITS)); |
| } |
| |
| int vp9_rc_clamp_pframe_target_size(const VP9_COMP *const cpi, int target) { |
| const RATE_CONTROL *rc = &cpi->rc; |
| const VP9EncoderConfig *oxcf = &cpi->oxcf; |
| |
| const int min_frame_target = |
| VPXMAX(rc->min_frame_bandwidth, rc->avg_frame_bandwidth >> 5); |
| if (target < min_frame_target) target = min_frame_target; |
| if (cpi->refresh_golden_frame && rc->is_src_frame_alt_ref) { |
| // If there is an active ARF at this location use the minimum |
| // bits on this frame even if it is a constructed arf. |
| // The active maximum quantizer insures that an appropriate |
| // number of bits will be spent if needed for constructed ARFs. |
| target = min_frame_target; |
| } |
| |
| // Clip the frame target to the maximum allowed value. |
| if (target > rc->max_frame_bandwidth) target = rc->max_frame_bandwidth; |
| |
| if (oxcf->rc_max_inter_bitrate_pct) { |
| const int max_rate = |
| rc->avg_frame_bandwidth * oxcf->rc_max_inter_bitrate_pct / 100; |
| target = VPXMIN(target, max_rate); |
| } |
| return target; |
| } |
| |
| int vp9_rc_clamp_iframe_target_size(const VP9_COMP *const cpi, int target) { |
| const RATE_CONTROL *rc = &cpi->rc; |
| const VP9EncoderConfig *oxcf = &cpi->oxcf; |
| if (oxcf->rc_max_intra_bitrate_pct) { |
| const int max_rate = |
| rc->avg_frame_bandwidth * oxcf->rc_max_intra_bitrate_pct / 100; |
| target = VPXMIN(target, max_rate); |
| } |
| if (target > rc->max_frame_bandwidth) target = rc->max_frame_bandwidth; |
| return target; |
| } |
| |
| // TODO(marpan/jianj): bits_off_target and buffer_level are used in the same |
| // way for CBR mode, for the buffering updates below. Look into removing one |
| // of these (i.e., bits_off_target). |
| // Update the buffer level before encoding with the per-frame-bandwidth, |
| void vp9_update_buffer_level_preencode(VP9_COMP *cpi) { |
| RATE_CONTROL *const rc = &cpi->rc; |
| rc->bits_off_target += rc->avg_frame_bandwidth; |
| // Clip the buffer level to the maximum specified buffer size. |
| rc->bits_off_target = VPXMIN(rc->bits_off_target, rc->maximum_buffer_size); |
| rc->buffer_level = rc->bits_off_target; |
| } |
| |
| // Update the buffer level before encoding with the per-frame-bandwidth |
| // for SVC. The current and all upper temporal layers are updated, needed |
| // for the layered rate control which involves cumulative buffer levels for |
| // the temporal layers. Allow for using the timestamp(pts) delta for the |
| // framerate when the set_ref_frame_config is used. |
| static void update_buffer_level_svc_preencode(VP9_COMP *cpi) { |
| SVC *const svc = &cpi->svc; |
| int i; |
| // Set this to 1 to use timestamp delta for "framerate" under |
| // ref_frame_config usage. |
| int use_timestamp = 1; |
| const int64_t ts_delta = |
| svc->time_stamp_superframe - svc->time_stamp_prev[svc->spatial_layer_id]; |
| for (i = svc->temporal_layer_id; i < svc->number_temporal_layers; ++i) { |
| const int layer = |
| LAYER_IDS_TO_IDX(svc->spatial_layer_id, i, svc->number_temporal_layers); |
| LAYER_CONTEXT *const lc = &svc->layer_context[layer]; |
| RATE_CONTROL *const lrc = &lc->rc; |
| if (use_timestamp && cpi->svc.use_set_ref_frame_config && |
| svc->number_temporal_layers == 1 && ts_delta > 0 && |
| svc->current_superframe > 0) { |
| // TODO(marpan): This may need to be modified for temporal layers. |
| const double framerate_pts = 10000000.0 / ts_delta; |
| lrc->bits_off_target += (int)(lc->target_bandwidth / framerate_pts); |
| } else { |
| lrc->bits_off_target += (int)(lc->target_bandwidth / lc->framerate); |
| } |
| // Clip buffer level to maximum buffer size for the layer. |
| lrc->bits_off_target = |
| VPXMIN(lrc->bits_off_target, lrc->maximum_buffer_size); |
| lrc->buffer_level = lrc->bits_off_target; |
| if (i == svc->temporal_layer_id) { |
| cpi->rc.bits_off_target = lrc->bits_off_target; |
| cpi->rc.buffer_level = lrc->buffer_level; |
| } |
| } |
| } |
| |
| // Update the buffer level for higher temporal layers, given the encoded current |
| // temporal layer. |
| static void update_layer_buffer_level_postencode(SVC *svc, |
| int encoded_frame_size) { |
| int i = 0; |
| const int current_temporal_layer = svc->temporal_layer_id; |
| for (i = current_temporal_layer + 1; i < svc->number_temporal_layers; ++i) { |
| const int layer = |
| LAYER_IDS_TO_IDX(svc->spatial_layer_id, i, svc->number_temporal_layers); |
| LAYER_CONTEXT *lc = &svc->layer_context[layer]; |
| RATE_CONTROL *lrc = &lc->rc; |
| lrc->bits_off_target -= encoded_frame_size; |
| // Clip buffer level to maximum buffer size for the layer. |
| lrc->bits_off_target = |
| VPXMIN(lrc->bits_off_target, lrc->maximum_buffer_size); |
| lrc->buffer_level = lrc->bits_off_target; |
| } |
| } |
| |
| // Update the buffer level after encoding with encoded frame size. |
| static void update_buffer_level_postencode(VP9_COMP *cpi, |
| int encoded_frame_size) { |
| RATE_CONTROL *const rc = &cpi->rc; |
| rc->bits_off_target -= encoded_frame_size; |
| // Clip the buffer level to the maximum specified buffer size. |
| rc->bits_off_target = VPXMIN(rc->bits_off_target, rc->maximum_buffer_size); |
| // For screen-content mode, and if frame-dropper is off, don't let buffer |
| // level go below threshold, given here as -rc->maximum_ buffer_size. |
| if (cpi->oxcf.content == VP9E_CONTENT_SCREEN && |
| cpi->oxcf.drop_frames_water_mark == 0) |
| rc->bits_off_target = VPXMAX(rc->bits_off_target, -rc->maximum_buffer_size); |
| |
| rc->buffer_level = rc->bits_off_target; |
| |
| if (is_one_pass_cbr_svc(cpi)) { |
| update_layer_buffer_level_postencode(&cpi->svc, encoded_frame_size); |
| } |
| } |
| |
| int vp9_rc_get_default_min_gf_interval(int width, int height, |
| double framerate) { |
| // Assume we do not need any constraint lower than 4K 20 fps |
| static const double factor_safe = 3840 * 2160 * 20.0; |
| const double factor = width * height * framerate; |
| const int default_interval = |
| clamp((int)(framerate * 0.125), MIN_GF_INTERVAL, MAX_GF_INTERVAL); |
| |
| if (factor <= factor_safe) |
| return default_interval; |
| else |
| return VPXMAX(default_interval, |
| (int)(MIN_GF_INTERVAL * factor / factor_safe + 0.5)); |
| // Note this logic makes: |
| // 4K24: 5 |
| // 4K30: 6 |
| // 4K60: 12 |
| } |
| |
| int vp9_rc_get_default_max_gf_interval(double framerate, int min_gf_interval) { |
| int interval = VPXMIN(MAX_GF_INTERVAL, (int)(framerate * 0.75)); |
| interval += (interval & 0x01); // Round to even value |
| return VPXMAX(interval, min_gf_interval); |
| } |
| |
| void vp9_rc_init(const VP9EncoderConfig *oxcf, int pass, RATE_CONTROL *rc) { |
| int i; |
| |
| if (pass == 0 && oxcf->rc_mode == VPX_CBR) { |
| rc->avg_frame_qindex[KEY_FRAME] = oxcf->worst_allowed_q; |
| rc->avg_frame_qindex[INTER_FRAME] = oxcf->worst_allowed_q; |
| } else { |
| rc->avg_frame_qindex[KEY_FRAME] = |
| (oxcf->worst_allowed_q + oxcf->best_allowed_q) / 2; |
| rc->avg_frame_qindex[INTER_FRAME] = |
| (oxcf->worst_allowed_q + oxcf->best_allowed_q) / 2; |
| } |
| |
| rc->last_q[KEY_FRAME] = oxcf->best_allowed_q; |
| rc->last_q[INTER_FRAME] = oxcf->worst_allowed_q; |
| |
| rc->buffer_level = rc->starting_buffer_level; |
| rc->bits_off_target = rc->starting_buffer_level; |
| |
| rc->rolling_target_bits = rc->avg_frame_bandwidth; |
| rc->rolling_actual_bits = rc->avg_frame_bandwidth; |
| rc->long_rolling_target_bits = rc->avg_frame_bandwidth; |
| rc->long_rolling_actual_bits = rc->avg_frame_bandwidth; |
| |
| rc->total_actual_bits = 0; |
| rc->total_target_bits = 0; |
| rc->total_target_vs_actual = 0; |
| rc->avg_frame_low_motion = 0; |
| rc->count_last_scene_change = 0; |
| rc->af_ratio_onepass_vbr = 10; |
| rc->prev_avg_source_sad_lag = 0; |
| rc->high_source_sad = 0; |
| rc->reset_high_source_sad = 0; |
| rc->high_source_sad_lagindex = -1; |
| rc->high_num_blocks_with_motion = 0; |
| rc->hybrid_intra_scene_change = 0; |
| rc->re_encode_maxq_scene_change = 0; |
| rc->alt_ref_gf_group = 0; |
| rc->last_frame_is_src_altref = 0; |
| rc->fac_active_worst_inter = 150; |
| rc->fac_active_worst_gf = 100; |
| rc->force_qpmin = 0; |
| for (i = 0; i < MAX_LAG_BUFFERS; ++i) rc->avg_source_sad[i] = 0; |
| rc->frames_to_key = 0; |
| rc->frames_since_key = 8; // Sensible default for first frame. |
| rc->this_key_frame_forced = 0; |
| rc->next_key_frame_forced = 0; |
| rc->source_alt_ref_pending = 0; |
| rc->source_alt_ref_active = 0; |
| |
| rc->frames_till_gf_update_due = 0; |
| rc->ni_av_qi = oxcf->worst_allowed_q; |
| rc->ni_tot_qi = 0; |
| rc->ni_frames = 0; |
| |
| rc->tot_q = 0.0; |
| rc->avg_q = vp9_convert_qindex_to_q(oxcf->worst_allowed_q, oxcf->bit_depth); |
| |
| for (i = 0; i < RATE_FACTOR_LEVELS; ++i) { |
| rc->rate_correction_factors[i] = 1.0; |
| rc->damped_adjustment[i] = 0; |
| } |
| |
| rc->min_gf_interval = oxcf->min_gf_interval; |
| rc->max_gf_interval = oxcf->max_gf_interval; |
| if (rc->min_gf_interval == 0) |
| rc->min_gf_interval = vp9_rc_get_default_min_gf_interval( |
| oxcf->width, oxcf->height, oxcf->init_framerate); |
| if (rc->max_gf_interval == 0) |
| rc->max_gf_interval = vp9_rc_get_default_max_gf_interval( |
| oxcf->init_framerate, rc->min_gf_interval); |
| rc->baseline_gf_interval = (rc->min_gf_interval + rc->max_gf_interval) / 2; |
| if ((oxcf->pass == 0) && (oxcf->rc_mode == VPX_Q)) { |
| rc->static_scene_max_gf_interval = FIXED_GF_INTERVAL; |
| } else { |
| rc->static_scene_max_gf_interval = MAX_STATIC_GF_GROUP_LENGTH; |
| } |
| |
| rc->force_max_q = 0; |
| rc->last_post_encode_dropped_scene_change = 0; |
| rc->use_post_encode_drop = 0; |
| rc->ext_use_post_encode_drop = 0; |
| rc->arf_active_best_quality_adjustment_factor = 1.0; |
| rc->arf_increase_active_best_quality = 0; |
| rc->preserve_arf_as_gld = 0; |
| rc->preserve_next_arf_as_gld = 0; |
| rc->show_arf_as_gld = 0; |
| } |
| |
| static int check_buffer_above_thresh(VP9_COMP *cpi, int drop_mark) { |
| SVC *svc = &cpi->svc; |
| if (!cpi->use_svc || cpi->svc.framedrop_mode != FULL_SUPERFRAME_DROP) { |
| RATE_CONTROL *const rc = &cpi->rc; |
| return (rc->buffer_level > drop_mark); |
| } else { |
| int i; |
| // For SVC in the FULL_SUPERFRAME_DROP): the condition on |
| // buffer (if its above threshold, so no drop) is checked on current and |
| // upper spatial layers. If any spatial layer is not above threshold then |
| // we return 0. |
| for (i = svc->spatial_layer_id; i < svc->number_spatial_layers; ++i) { |
| const int layer = LAYER_IDS_TO_IDX(i, svc->temporal_layer_id, |
| svc->number_temporal_layers); |
| LAYER_CONTEXT *lc = &svc->layer_context[layer]; |
| RATE_CONTROL *lrc = &lc->rc; |
| // Exclude check for layer whose bitrate is 0. |
| if (lc->target_bandwidth > 0) { |
| const int drop_mark_layer = (int)(cpi->svc.framedrop_thresh[i] * |
| lrc->optimal_buffer_level / 100); |
| if (!(lrc->buffer_level > drop_mark_layer)) return 0; |
| } |
| } |
| return 1; |
| } |
| } |
| |
| static int check_buffer_below_thresh(VP9_COMP *cpi, int drop_mark) { |
| SVC *svc = &cpi->svc; |
| if (!cpi->use_svc || cpi->svc.framedrop_mode == LAYER_DROP) { |
| RATE_CONTROL *const rc = &cpi->rc; |
| return (rc->buffer_level <= drop_mark); |
| } else { |
| int i; |
| // For SVC in the constrained framedrop mode (svc->framedrop_mode = |
| // CONSTRAINED_LAYER_DROP or FULL_SUPERFRAME_DROP): the condition on |
| // buffer (if its below threshold, so drop frame) is checked on current |
| // and upper spatial layers. For FULL_SUPERFRAME_DROP mode if any |
| // spatial layer is <= threshold, then we return 1 (drop). |
| for (i = svc->spatial_layer_id; i < svc->number_spatial_layers; ++i) { |
| const int layer = LAYER_IDS_TO_IDX(i, svc->temporal_layer_id, |
| svc->number_temporal_layers); |
| LAYER_CONTEXT *lc = &svc->layer_context[layer]; |
| RATE_CONTROL *lrc = &lc->rc; |
| // Exclude check for layer whose bitrate is 0. |
| if (lc->target_bandwidth > 0) { |
| const int drop_mark_layer = (int)(cpi->svc.framedrop_thresh[i] * |
| lrc->optimal_buffer_level / 100); |
| if (cpi->svc.framedrop_mode == FULL_SUPERFRAME_DROP) { |
| if (lrc->buffer_level <= drop_mark_layer) return 1; |
| } else { |
| if (!(lrc->buffer_level <= drop_mark_layer)) return 0; |
| } |
| } |
| } |
| if (cpi->svc.framedrop_mode == FULL_SUPERFRAME_DROP) |
| return 0; |
| else |
| return 1; |
| } |
| } |
| |
| int vp9_test_drop(VP9_COMP *cpi) { |
| const VP9EncoderConfig *oxcf = &cpi->oxcf; |
| RATE_CONTROL *const rc = &cpi->rc; |
| SVC *svc = &cpi->svc; |
| int drop_frames_water_mark = oxcf->drop_frames_water_mark; |
| if (cpi->use_svc) { |
| // If we have dropped max_consec_drop frames, then we don't |
| // drop this spatial layer, and reset counter to 0. |
| if (svc->drop_count[svc->spatial_layer_id] == svc->max_consec_drop) { |
| svc->drop_count[svc->spatial_layer_id] = 0; |
| return 0; |
| } else { |
| drop_frames_water_mark = svc->framedrop_thresh[svc->spatial_layer_id]; |
| } |
| } |
| if (!drop_frames_water_mark || |
| (svc->spatial_layer_id > 0 && |
| svc->framedrop_mode == FULL_SUPERFRAME_DROP)) { |
| return 0; |
| } else { |
| if ((rc->buffer_level < 0 && svc->framedrop_mode != FULL_SUPERFRAME_DROP) || |
| (check_buffer_below_thresh(cpi, -1) && |
| svc->framedrop_mode == FULL_SUPERFRAME_DROP)) { |
| // Always drop if buffer is below 0. |
| return 1; |
| } else { |
| // If buffer is below drop_mark, for now just drop every other frame |
| // (starting with the next frame) until it increases back over drop_mark. |
| int drop_mark = |
| (int)(drop_frames_water_mark * rc->optimal_buffer_level / 100); |
| if (check_buffer_above_thresh(cpi, drop_mark) && |
| (rc->decimation_factor > 0)) { |
| --rc->decimation_factor; |
| } else if (check_buffer_below_thresh(cpi, drop_mark) && |
| rc->decimation_factor == 0) { |
| rc->decimation_factor = 1; |
| } |
| if (rc->decimation_factor > 0) { |
| if (rc->decimation_count > 0) { |
| --rc->decimation_count; |
| return 1; |
| } else { |
| rc->decimation_count = rc->decimation_factor; |
| return 0; |
| } |
| } else { |
| rc->decimation_count = 0; |
| return 0; |
| } |
| } |
| } |
| } |
| |
| int post_encode_drop_cbr(VP9_COMP *cpi, size_t *size) { |
| size_t frame_size = *size << 3; |
| int64_t new_buffer_level = |
| cpi->rc.buffer_level + cpi->rc.avg_frame_bandwidth - (int64_t)frame_size; |
| |
| // For now we drop if new buffer level (given the encoded frame size) goes |
| // below 0. |
| if (new_buffer_level < 0) { |
| *size = 0; |
| vp9_rc_postencode_update_drop_frame(cpi); |
| // Update flag to use for next frame. |
| if (cpi->rc.high_source_sad || |
| (cpi->use_svc && cpi->svc.high_source_sad_superframe)) |
| cpi->rc.last_post_encode_dropped_scene_change = 1; |
| // Force max_q on next fame. |
| cpi->rc.force_max_q = 1; |
| cpi->rc.avg_frame_qindex[INTER_FRAME] = cpi->rc.worst_quality; |
| cpi->last_frame_dropped = 1; |
| cpi->ext_refresh_frame_flags_pending = 0; |
| if (cpi->use_svc) { |
| SVC *svc = &cpi->svc; |
| int sl = 0; |
| int tl = 0; |
| svc->last_layer_dropped[svc->spatial_layer_id] = 1; |
| svc->drop_spatial_layer[svc->spatial_layer_id] = 1; |
| svc->drop_count[svc->spatial_layer_id]++; |
| svc->skip_enhancement_layer = 1; |
| // Postencode drop is only checked on base spatial layer, |
| // for now if max-q is set on base we force it on all layers. |
| for (sl = 0; sl < svc->number_spatial_layers; ++sl) { |
| for (tl = 0; tl < svc->number_temporal_layers; ++tl) { |
| const int layer = |
| LAYER_IDS_TO_IDX(sl, tl, svc->number_temporal_layers); |
| LAYER_CONTEXT *lc = &svc->layer_context[layer]; |
| RATE_CONTROL *lrc = &lc->rc; |
| lrc->force_max_q = 1; |
| lrc->avg_frame_qindex[INTER_FRAME] = cpi->rc.worst_quality; |
| } |
| } |
| } |
| return 1; |
| } |
| |
| cpi->rc.force_max_q = 0; |
| cpi->rc.last_post_encode_dropped_scene_change = 0; |
| return 0; |
| } |
| |
| int vp9_rc_drop_frame(VP9_COMP *cpi) { |
| SVC *svc = &cpi->svc; |
| int svc_prev_layer_dropped = 0; |
| // In the constrained or full_superframe framedrop mode for svc |
| // (framedrop_mode != (LAYER_DROP && CONSTRAINED_FROM_ABOVE)), |
| // if the previous spatial layer was dropped, drop the current spatial layer. |
| if (cpi->use_svc && svc->spatial_layer_id > 0 && |
| svc->drop_spatial_layer[svc->spatial_layer_id - 1]) |
| svc_prev_layer_dropped = 1; |
| if ((svc_prev_layer_dropped && svc->framedrop_mode != LAYER_DROP && |
| svc->framedrop_mode != CONSTRAINED_FROM_ABOVE_DROP) || |
| svc->force_drop_constrained_from_above[svc->spatial_layer_id] || |
| vp9_test_drop(cpi)) { |
| vp9_rc_postencode_update_drop_frame(cpi); |
| cpi->ext_refresh_frame_flags_pending = 0; |
| cpi->last_frame_dropped = 1; |
| if (cpi->use_svc) { |
| svc->last_layer_dropped[svc->spatial_layer_id] = 1; |
| svc->drop_spatial_layer[svc->spatial_layer_id] = 1; |
| svc->drop_count[svc->spatial_layer_id]++; |
| svc->skip_enhancement_layer = 1; |
| if (svc->framedrop_mode == LAYER_DROP || |
| (svc->framedrop_mode == CONSTRAINED_FROM_ABOVE_DROP && |
| svc->force_drop_constrained_from_above[svc->number_spatial_layers - |
| 1] == 0) || |
| svc->drop_spatial_layer[0] == 0) { |
| // For the case of constrained drop mode where full superframe is |
| // dropped, we don't increment the svc frame counters. |
| // In particular temporal layer counter (which is incremented in |
| // vp9_inc_frame_in_layer()) won't be incremented, so on a dropped |
| // frame we try the same temporal_layer_id on next incoming frame. |
| // This is to avoid an issue with temporal alignment with full |
| // superframe dropping. |
| vp9_inc_frame_in_layer(cpi); |
| } |
| if (svc->spatial_layer_id == svc->number_spatial_layers - 1) { |
| int i; |
| int all_layers_drop = 1; |
| for (i = 0; i < svc->spatial_layer_id; i++) { |
| if (svc->drop_spatial_layer[i] == 0) { |
| all_layers_drop = 0; |
| break; |
| } |
| } |
| if (all_layers_drop == 1) svc->skip_enhancement_layer = 0; |
| } |
| } |
| return 1; |
| } |
| return 0; |
| } |
| |
| static int adjust_q_cbr(const VP9_COMP *cpi, int q) { |
| // This makes sure q is between oscillating Qs to prevent resonance. |
| if (!cpi->rc.reset_high_source_sad && |
| (!cpi->oxcf.gf_cbr_boost_pct || |
| !(cpi->refresh_alt_ref_frame || cpi->refresh_golden_frame)) && |
| (cpi->rc.rc_1_frame * cpi->rc.rc_2_frame == -1) && |
| cpi->rc.q_1_frame != cpi->rc.q_2_frame) { |
| int qclamp = clamp(q, VPXMIN(cpi->rc.q_1_frame, cpi->rc.q_2_frame), |
| VPXMAX(cpi->rc.q_1_frame, cpi->rc.q_2_frame)); |
| // If the previous frame had overshoot and the current q needs to increase |
| // above the clamped value, reduce the clamp for faster reaction to |
| // overshoot. |
| if (cpi->rc.rc_1_frame == -1 && q > qclamp) |
| q = (q + qclamp) >> 1; |
| else |
| q = qclamp; |
| } |
| if (cpi->oxcf.content == VP9E_CONTENT_SCREEN) |
| vp9_cyclic_refresh_limit_q(cpi, &q); |
| return VPXMAX(VPXMIN(q, cpi->rc.worst_quality), cpi->rc.best_quality); |
| } |
| |
| static double get_rate_correction_factor(const VP9_COMP *cpi) { |
| const RATE_CONTROL *const rc = &cpi->rc; |
| const VP9_COMMON *const cm = &cpi->common; |
| double rcf; |
| |
| if (frame_is_intra_only(cm)) { |
| rcf = rc->rate_correction_factors[KF_STD]; |
| } else if (cpi->oxcf.pass == 2) { |
| RATE_FACTOR_LEVEL rf_lvl = |
| cpi->twopass.gf_group.rf_level[cpi->twopass.gf_group.index]; |
| rcf = rc->rate_correction_factors[rf_lvl]; |
| } else { |
| if ((cpi->refresh_alt_ref_frame || cpi->refresh_golden_frame) && |
| !rc->is_src_frame_alt_ref && !cpi->use_svc && |
| (cpi->oxcf.rc_mode != VPX_CBR || cpi->oxcf.gf_cbr_boost_pct > 100)) |
| rcf = rc->rate_correction_factors[GF_ARF_STD]; |
| else |
| rcf = rc->rate_correction_factors[INTER_NORMAL]; |
| } |
| rcf *= rcf_mult[rc->frame_size_selector]; |
| return fclamp(rcf, MIN_BPB_FACTOR, MAX_BPB_FACTOR); |
| } |
| |
| static void set_rate_correction_factor(VP9_COMP *cpi, double factor) { |
| RATE_CONTROL *const rc = &cpi->rc; |
| const VP9_COMMON *const cm = &cpi->common; |
| |
| // Normalize RCF to account for the size-dependent scaling factor. |
| factor /= rcf_mult[cpi->rc.frame_size_selector]; |
| |
| factor = fclamp(factor, MIN_BPB_FACTOR, MAX_BPB_FACTOR); |
| |
| if (frame_is_intra_only(cm)) { |
| rc->rate_correction_factors[KF_STD] = factor; |
| } else if (cpi->oxcf.pass == 2) { |
| RATE_FACTOR_LEVEL rf_lvl = |
| cpi->twopass.gf_group.rf_level[cpi->twopass.gf_group.index]; |
| rc->rate_correction_factors[rf_lvl] = factor; |
| } else { |
| if ((cpi->refresh_alt_ref_frame || cpi->refresh_golden_frame) && |
| !rc->is_src_frame_alt_ref && !cpi->use_svc && |
| (cpi->oxcf.rc_mode != VPX_CBR || cpi->oxcf.gf_cbr_boost_pct > 100)) |
| rc->rate_correction_factors[GF_ARF_STD] = factor; |
| else |
| rc->rate_correction_factors[INTER_NORMAL] = factor; |
| } |
| } |
| |
| void vp9_rc_update_rate_correction_factors(VP9_COMP *cpi) { |
| const VP9_COMMON *const cm = &cpi->common; |
| int correction_factor = 100; |
| double rate_correction_factor = get_rate_correction_factor(cpi); |
| double adjustment_limit; |
| RATE_FACTOR_LEVEL rf_lvl = |
| cpi->twopass.gf_group.rf_level[cpi->twopass.gf_group.index]; |
| |
| int projected_size_based_on_q = 0; |
| |
| // Do not update the rate factors for arf overlay frames. |
| if (cpi->rc.is_src_frame_alt_ref) return; |
| |
| // Clear down mmx registers to allow floating point in what follows |
| vpx_clear_system_state(); |
| |
| // Work out how big we would have expected the frame to be at this Q given |
| // the current correction factor. |
| // Stay in double to avoid int overflow when values are large |
| if (cpi->oxcf.aq_mode == CYCLIC_REFRESH_AQ && cpi->common.seg.enabled) { |
| projected_size_based_on_q = |
| vp9_cyclic_refresh_estimate_bits_at_q(cpi, rate_correction_factor); |
| } else { |
| FRAME_TYPE frame_type = cm->intra_only ? KEY_FRAME : cm->frame_type; |
| projected_size_based_on_q = |
| vp9_estimate_bits_at_q(frame_type, cm->base_qindex, cm->MBs, |
| rate_correction_factor, cm->bit_depth); |
| } |
| // Work out a size correction factor. |
| if (projected_size_based_on_q > FRAME_OVERHEAD_BITS) |
| correction_factor = (int)((100 * (int64_t)cpi->rc.projected_frame_size) / |
| projected_size_based_on_q); |
| |
| // Do not use damped adjustment for the first frame of each frame type |
| if (!cpi->rc.damped_adjustment[rf_lvl]) { |
| adjustment_limit = 1.0; |
| cpi->rc.damped_adjustment[rf_lvl] = 1; |
| } else { |
| // More heavily damped adjustment used if we have been oscillating either |
| // side of target. |
| adjustment_limit = |
| 0.25 + 0.5 * VPXMIN(1, fabs(log10(0.01 * correction_factor))); |
| } |
| |
| cpi->rc.q_2_frame = cpi->rc.q_1_frame; |
| cpi->rc.q_1_frame = cm->base_qindex; |
| cpi->rc.rc_2_frame = cpi->rc.rc_1_frame; |
| if (correction_factor > 110) |
| cpi->rc.rc_1_frame = -1; |
| else if (correction_factor < 90) |
| cpi->rc.rc_1_frame = 1; |
| else |
| cpi->rc.rc_1_frame = 0; |
| |
| // Turn off oscilation detection in the case of massive overshoot. |
| if (cpi->rc.rc_1_frame == -1 && cpi->rc.rc_2_frame == 1 && |
| correction_factor > 1000) { |
| cpi->rc.rc_2_frame = 0; |
| } |
| |
| if (correction_factor > 102) { |
| // We are not already at the worst allowable quality |
| correction_factor = |
| (int)(100 + ((correction_factor - 100) * adjustment_limit)); |
| rate_correction_factor = (rate_correction_factor * correction_factor) / 100; |
| // Keep rate_correction_factor within limits |
| if (rate_correction_factor > MAX_BPB_FACTOR) |
| rate_correction_factor = MAX_BPB_FACTOR; |
| } else if (correction_factor < 99) { |
| // We are not already at the best allowable quality |
| correction_factor = |
| (int)(100 - ((100 - correction_factor) * adjustment_limit)); |
| rate_correction_factor = (rate_correction_factor * correction_factor) / 100; |
| |
| // Keep rate_correction_factor within limits |
| if (rate_correction_factor < MIN_BPB_FACTOR) |
| rate_correction_factor = MIN_BPB_FACTOR; |
| } |
| |
| set_rate_correction_factor(cpi, rate_correction_factor); |
| } |
| |
| int vp9_rc_regulate_q(const VP9_COMP *cpi, int target_bits_per_frame, |
| int active_best_quality, int active_worst_quality) { |
| const VP9_COMMON *const cm = &cpi->common; |
| CYCLIC_REFRESH *const cr = cpi->cyclic_refresh; |
| int q = active_worst_quality; |
| int last_error = INT_MAX; |
| int i, target_bits_per_mb, bits_per_mb_at_this_q; |
| const double correction_factor = get_rate_correction_factor(cpi); |
| |
| // Calculate required scaling factor based on target frame size and size of |
| // frame produced using previous Q. |
| target_bits_per_mb = |
| (int)(((uint64_t)target_bits_per_frame << BPER_MB_NORMBITS) / cm->MBs); |
| |
| i = active_best_quality; |
| |
| do { |
| if (cpi->oxcf.aq_mode == CYCLIC_REFRESH_AQ && cr->apply_cyclic_refresh && |
| (!cpi->oxcf.gf_cbr_boost_pct || !cpi->refresh_golden_frame)) { |
| bits_per_mb_at_this_q = |
| (int)vp9_cyclic_refresh_rc_bits_per_mb(cpi, i, correction_factor); |
| } else { |
| FRAME_TYPE frame_type = cm->intra_only ? KEY_FRAME : cm->frame_type; |
| bits_per_mb_at_this_q = (int)vp9_rc_bits_per_mb( |
| frame_type, i, correction_factor, cm->bit_depth); |
| } |
| |
| if (bits_per_mb_at_this_q <= target_bits_per_mb) { |
| if ((target_bits_per_mb - bits_per_mb_at_this_q) <= last_error) |
| q = i; |
| else |
| q = i - 1; |
| |
| break; |
| } else { |
| last_error = bits_per_mb_at_this_q - target_bits_per_mb; |
| } |
| } while (++i <= active_worst_quality); |
| |
| // Adjustment to q for CBR mode. |
| if (cpi->oxcf.rc_mode == VPX_CBR) return adjust_q_cbr(cpi, q); |
| |
| return q; |
| } |
| |
| static int get_active_quality(int q, int gfu_boost, int low, int high, |
| int *low_motion_minq, int *high_motion_minq) { |
| if (gfu_boost > high) { |
| return low_motion_minq[q]; |
| } else if (gfu_boost < low) { |
| return high_motion_minq[q]; |
| } else { |
| const int gap = high - low; |
| const int offset = high - gfu_boost; |
| const int qdiff = high_motion_minq[q] - low_motion_minq[q]; |
| const int adjustment = ((offset * qdiff) + (gap >> 1)) / gap; |
| return low_motion_minq[q] + adjustment; |
| } |
| } |
| |
| static int get_kf_active_quality(const RATE_CONTROL *const rc, int q, |
| vpx_bit_depth_t bit_depth) { |
| int *kf_low_motion_minq; |
| int *kf_high_motion_minq; |
| ASSIGN_MINQ_TABLE(bit_depth, kf_low_motion_minq); |
| ASSIGN_MINQ_TABLE(bit_depth, kf_high_motion_minq); |
| return get_active_quality(q, rc->kf_boost, kf_low, kf_high, |
| kf_low_motion_minq, kf_high_motion_minq); |
| } |
| |
| static int get_gf_active_quality(const VP9_COMP *const cpi, int q, |
| vpx_bit_depth_t bit_depth) { |
| const GF_GROUP *const gf_group = &cpi->twopass.gf_group; |
| const RATE_CONTROL *const rc = &cpi->rc; |
| |
| int *arfgf_low_motion_minq; |
| int *arfgf_high_motion_minq; |
| const int gfu_boost = cpi->multi_layer_arf |
| ? gf_group->gfu_boost[gf_group->index] |
| : rc->gfu_boost; |
| ASSIGN_MINQ_TABLE(bit_depth, arfgf_low_motion_minq); |
| ASSIGN_MINQ_TABLE(bit_depth, arfgf_high_motion_minq); |
| return get_active_quality(q, gfu_boost, gf_low, gf_high, |
| arfgf_low_motion_minq, arfgf_high_motion_minq); |
| } |
| |
| static int calc_active_worst_quality_one_pass_vbr(const VP9_COMP *cpi) { |
| const RATE_CONTROL *const rc = &cpi->rc; |
| const unsigned int curr_frame = cpi->common.current_video_frame; |
| int active_worst_quality; |
| |
| if (cpi->common.frame_type == KEY_FRAME) { |
| active_worst_quality = |
| curr_frame == 0 ? rc->worst_quality : rc->last_q[KEY_FRAME] << 1; |
| } else { |
| if (!rc->is_src_frame_alt_ref && |
| (cpi->refresh_golden_frame || cpi->refresh_alt_ref_frame)) { |
| active_worst_quality = |
| curr_frame == 1 |
| ? rc->last_q[KEY_FRAME] * 5 >> 2 |
| : rc->last_q[INTER_FRAME] * rc->fac_active_worst_gf / 100; |
| } else { |
| active_worst_quality = curr_frame == 1 |
| ? rc->last_q[KEY_FRAME] << 1 |
| : rc->avg_frame_qindex[INTER_FRAME] * |
| rc->fac_active_worst_inter / 100; |
| } |
| } |
| return VPXMIN(active_worst_quality, rc->worst_quality); |
| } |
| |
| // Adjust active_worst_quality level based on buffer level. |
| static int calc_active_worst_quality_one_pass_cbr(const VP9_COMP *cpi) { |
| // Adjust active_worst_quality: If buffer is above the optimal/target level, |
| // bring active_worst_quality down depending on fullness of buffer. |
| // If buffer is below the optimal level, let the active_worst_quality go from |
| // ambient Q (at buffer = optimal level) to worst_quality level |
| // (at buffer = critical level). |
| const VP9_COMMON *const cm = &cpi->common; |
| const RATE_CONTROL *rc = &cpi->rc; |
| // Buffer level below which we push active_worst to worst_quality. |
| int64_t critical_level = rc->optimal_buffer_level >> 3; |
| int64_t buff_lvl_step = 0; |
| int adjustment = 0; |
| int active_worst_quality; |
| int ambient_qp; |
| unsigned int num_frames_weight_key = 5 * cpi->svc.number_temporal_layers; |
| if (frame_is_intra_only(cm) || rc->reset_high_source_sad || rc->force_max_q) |
| return rc->worst_quality; |
| // For ambient_qp we use minimum of avg_frame_qindex[KEY_FRAME/INTER_FRAME] |
| // for the first few frames following key frame. These are both initialized |
| // to worst_quality and updated with (3/4, 1/4) average in postencode_update. |
| // So for first few frames following key, the qp of that key frame is weighted |
| // into the active_worst_quality setting. |
| ambient_qp = (cm->current_video_frame < num_frames_weight_key) |
| ? VPXMIN(rc->avg_frame_qindex[INTER_FRAME], |
| rc->avg_frame_qindex[KEY_FRAME]) |
| : rc->avg_frame_qindex[INTER_FRAME]; |
| active_worst_quality = VPXMIN(rc->worst_quality, (ambient_qp * 5) >> 2); |
| // For SVC if the current base spatial layer was key frame, use the QP from |
| // that base layer for ambient_qp. |
| if (cpi->use_svc && cpi->svc.spatial_layer_id > 0) { |
| int layer = LAYER_IDS_TO_IDX(0, cpi->svc.temporal_layer_id, |
| cpi->svc.number_temporal_layers); |
| const LAYER_CONTEXT *lc = &cpi->svc.layer_context[layer]; |
| if (lc->is_key_frame) { |
| const RATE_CONTROL *lrc = &lc->rc; |
| ambient_qp = VPXMIN(ambient_qp, lrc->last_q[KEY_FRAME]); |
| active_worst_quality = VPXMIN(rc->worst_quality, (ambient_qp * 9) >> 3); |
| } |
| } |
| if (rc->buffer_level > rc->optimal_buffer_level) { |
| // Adjust down. |
| // Maximum limit for down adjustment ~30%; make it lower for screen content. |
| int max_adjustment_down = active_worst_quality / 3; |
| if (cpi->oxcf.content == VP9E_CONTENT_SCREEN) |
| max_adjustment_down = active_worst_quality >> 3; |
| if (max_adjustment_down) { |
| buff_lvl_step = ((rc->maximum_buffer_size - rc->optimal_buffer_level) / |
| max_adjustment_down); |
| if (buff_lvl_step) |
| adjustment = (int)((rc->buffer_level - rc->optimal_buffer_level) / |
| buff_lvl_step); |
| active_worst_quality -= adjustment; |
| } |
| } else if (rc->buffer_level > critical_level) { |
| // Adjust up from ambient Q. |
| if (critical_level) { |
| buff_lvl_step = (rc->optimal_buffer_level - critical_level); |
| if (buff_lvl_step) { |
| adjustment = (int)((rc->worst_quality - ambient_qp) * |
| (rc->optimal_buffer_level - rc->buffer_level) / |
| buff_lvl_step); |
| } |
| active_worst_quality = ambient_qp + adjustment; |
| } |
| } else { |
| // Set to worst_quality if buffer is below critical level. |
| active_worst_quality = rc->worst_quality; |
| } |
| return active_worst_quality; |
| } |
| |
| static int rc_pick_q_and_bounds_one_pass_cbr(const VP9_COMP *cpi, |
| int *bottom_index, |
| int *top_index) { |
| const VP9_COMMON *const cm = &cpi->common; |
| const RATE_CONTROL *const rc = &cpi->rc; |
| int active_best_quality; |
| int active_worst_quality = calc_active_worst_quality_one_pass_cbr(cpi); |
| int q; |
| int *rtc_minq; |
| ASSIGN_MINQ_TABLE(cm->bit_depth, rtc_minq); |
| |
| if (frame_is_intra_only(cm)) { |
| active_best_quality = rc->best_quality; |
| // Handle the special case for key frames forced when we have reached |
| // the maximum key frame interval. Here force the Q to a range |
| // based on the ambient Q to reduce the risk of popping. |
| if (rc->this_key_frame_forced) { |
| int qindex = rc->last_boosted_qindex; |
| double last_boosted_q = vp9_convert_qindex_to_q(qindex, cm->bit_depth); |
| int delta_qindex = vp9_compute_qdelta( |
| rc, last_boosted_q, (last_boosted_q * 0.75), cm->bit_depth); |
| active_best_quality = VPXMAX(qindex + delta_qindex, rc->best_quality); |
| } else if (cm->current_video_frame > 0) { |
| // not first frame of one pass and kf_boost is set |
| double q_adj_factor = 1.0; |
| double q_val; |
| |
| active_best_quality = get_kf_active_quality( |
| rc, rc->avg_frame_qindex[KEY_FRAME], cm->bit_depth); |
| |
| // Allow somewhat lower kf minq with small image formats. |
| if ((cm->width * cm->height) <= (352 * 288)) { |
| q_adj_factor -= 0.25; |
| } |
| |
| // Convert the adjustment factor to a qindex delta |
| // on active_best_quality. |
| q_val = vp9_convert_qindex_to_q(active_best_quality, cm->bit_depth); |
| active_best_quality += |
| vp9_compute_qdelta(rc, q_val, q_val * q_adj_factor, cm->bit_depth); |
| } |
| } else if (!rc->is_src_frame_alt_ref && !cpi->use_svc && |
| cpi->oxcf.gf_cbr_boost_pct && |
| (cpi->refresh_golden_frame || cpi->refresh_alt_ref_frame)) { |
| // Use the lower of active_worst_quality and recent |
| // average Q as basis for GF/ARF best Q limit unless last frame was |
| // a key frame. |
| if (rc->frames_since_key > 1 && |
| rc->avg_frame_qindex[INTER_FRAME] < active_worst_quality) { |
| q = rc->avg_frame_qindex[INTER_FRAME]; |
| } else { |
| q = active_worst_quality; |
| } |
| active_best_quality = get_gf_active_quality(cpi, q, cm->bit_depth); |
| } else { |
| // Use the lower of active_worst_quality and recent/average Q. |
| if (cm->current_video_frame > 1) { |
| if (rc->avg_frame_qindex[INTER_FRAME] < active_worst_quality) |
| active_best_quality = rtc_minq[rc->avg_frame_qindex[INTER_FRAME]]; |
| else |
| active_best_quality = rtc_minq[active_worst_quality]; |
| } else { |
| if (rc->avg_frame_qindex[KEY_FRAME] < active_worst_quality) |
| active_best_quality = rtc_minq[rc->avg_frame_qindex[KEY_FRAME]]; |
| else |
| active_best_quality = rtc_minq[active_worst_quality]; |
| } |
| } |
| |
| // Clip the active best and worst quality values to limits |
| active_best_quality = |
| clamp(active_best_quality, rc->best_quality, rc->worst_quality); |
| active_worst_quality = |
| clamp(active_worst_quality, active_best_quality, rc->worst_quality); |
| |
| *top_index = active_worst_quality; |
| *bottom_index = active_best_quality; |
| |
| // Special case code to try and match quality with forced key frames |
| if (frame_is_intra_only(cm) && rc->this_key_frame_forced) { |
| q = rc->last_boosted_qindex; |
| } else { |
| q = vp9_rc_regulate_q(cpi, rc->this_frame_target, active_best_quality, |
| active_worst_quality); |
| if (q > *top_index) { |
| // Special case when we are targeting the max allowed rate |
| if (rc->this_frame_target >= rc->max_frame_bandwidth) |
| *top_index = q; |
| else |
| q = *top_index; |
| } |
| } |
| |
| assert(*top_index <= rc->worst_quality && *top_index >= rc->best_quality); |
| assert(*bottom_index <= rc->worst_quality && |
| *bottom_index >= rc->best_quality); |
| assert(q <= rc->worst_quality && q >= rc->best_quality); |
| return q; |
| } |
| |
| static int get_active_cq_level_one_pass(const RATE_CONTROL *rc, |
| const VP9EncoderConfig *const oxcf) { |
| static const double cq_adjust_threshold = 0.1; |
| int active_cq_level = oxcf->cq_level; |
| if (oxcf->rc_mode == VPX_CQ && rc->total_target_bits > 0) { |
| const double x = (double)rc->total_actual_bits / rc->total_target_bits; |
| if (x < cq_adjust_threshold) { |
| active_cq_level = (int)(active_cq_level * x / cq_adjust_threshold); |
| } |
| } |
| return active_cq_level; |
| } |
| |
| #define SMOOTH_PCT_MIN 0.1 |
| #define SMOOTH_PCT_DIV 0.05 |
| static int get_active_cq_level_two_pass(const TWO_PASS *twopass, |
| const RATE_CONTROL *rc, |
| const VP9EncoderConfig *const oxcf) { |
| static const double cq_adjust_threshold = 0.1; |
| int active_cq_level = oxcf->cq_level; |
| if (oxcf->rc_mode == VPX_CQ) { |
| if (twopass->mb_smooth_pct > SMOOTH_PCT_MIN) { |
| active_cq_level -= |
| (int)((twopass->mb_smooth_pct - SMOOTH_PCT_MIN) / SMOOTH_PCT_DIV); |
| active_cq_level = VPXMAX(active_cq_level, 0); |
| } |
| if (rc->total_target_bits > 0) { |
| const double x = (double)rc->total_actual_bits / rc->total_target_bits; |
| if (x < cq_adjust_threshold) { |
| active_cq_level = (int)(active_cq_level * x / cq_adjust_threshold); |
| } |
| } |
| } |
| return active_cq_level; |
| } |
| |
| static int rc_pick_q_and_bounds_one_pass_vbr(const VP9_COMP *cpi, |
| int *bottom_index, |
| int *top_index) { |
| const VP9_COMMON *const cm = &cpi->common; |
| const RATE_CONTROL *const rc = &cpi->rc; |
| const VP9EncoderConfig *const oxcf = &cpi->oxcf; |
| const int cq_level = get_active_cq_level_one_pass(rc, oxcf); |
| int active_best_quality; |
| int active_worst_quality = calc_active_worst_quality_one_pass_vbr(cpi); |
| int q; |
| int *inter_minq; |
| ASSIGN_MINQ_TABLE(cm->bit_depth, inter_minq); |
| |
| if (frame_is_intra_only(cm)) { |
| if (oxcf->rc_mode == VPX_Q) { |
| int qindex = cq_level; |
| double q = vp9_convert_qindex_to_q(qindex, cm->bit_depth); |
| int delta_qindex = vp9_compute_qdelta(rc, q, q * 0.25, cm->bit_depth); |
| active_best_quality = VPXMAX(qindex + delta_qindex, rc->best_quality); |
| } else if (rc->this_key_frame_forced) { |
| // Handle the special case for key frames forced when we have reached |
| // the maximum key frame interval. Here force the Q to a range |
| // based on the ambient Q to reduce the risk of popping. |
| int qindex = rc->last_boosted_qindex; |
| double last_boosted_q = vp9_convert_qindex_to_q(qindex, cm->bit_depth); |
| int delta_qindex = vp9_compute_qdelta( |
| rc, last_boosted_q, last_boosted_q * 0.75, cm->bit_depth); |
| active_best_quality = VPXMAX(qindex + delta_qindex, rc->best_quality); |
| } else { |
| // not first frame of one pass and kf_boost is set |
| double q_adj_factor = 1.0; |
| double q_val; |
| |
| active_best_quality = get_kf_active_quality( |
| rc, rc->avg_frame_qindex[KEY_FRAME], cm->bit_depth); |
| |
| // Allow somewhat lower kf minq with small image formats. |
| if ((cm->width * cm->height) <= (352 * 288)) { |
| q_adj_factor -= 0.25; |
| } |
| |
| // Convert the adjustment factor to a qindex delta |
| // on active_best_quality. |
| q_val = vp9_convert_qindex_to_q(active_best_quality, cm->bit_depth); |
| active_best_quality += |
| vp9_compute_qdelta(rc, q_val, q_val * q_adj_factor, cm->bit_depth); |
| } |
| } else if (!rc->is_src_frame_alt_ref && |
| (cpi->refresh_golden_frame || cpi->refresh_alt_ref_frame)) { |
| // Use the lower of active_worst_quality and recent |
| // average Q as basis for GF/ARF best Q limit unless last frame was |
| // a key frame. |
| if (rc->frames_since_key > 1) { |
| if (rc->avg_frame_qindex[INTER_FRAME] < active_worst_quality) { |
| q = rc->avg_frame_qindex[INTER_FRAME]; |
| } else { |
| q = active_worst_quality; |
| } |
| } else { |
| q = rc->avg_frame_qindex[KEY_FRAME]; |
| } |
| // For constrained quality dont allow Q less than the cq level |
| if (oxcf->rc_mode == VPX_CQ) { |
| if (q < cq_level) q = cq_level; |
| |
| active_best_quality = get_gf_active_quality(cpi, q, cm->bit_depth); |
| |
| // Constrained quality use slightly lower active best. |
| active_best_quality = active_best_quality * 15 / 16; |
| |
| } else if (oxcf->rc_mode == VPX_Q) { |
| int qindex = cq_level; |
| double q = vp9_convert_qindex_to_q(qindex, cm->bit_depth); |
| int delta_qindex; |
| if (cpi->refresh_alt_ref_frame) |
| delta_qindex = vp9_compute_qdelta(rc, q, q * 0.40, cm->bit_depth); |
| else |
| delta_qindex = vp9_compute_qdelta(rc, q, q * 0.50, cm->bit_depth); |
| active_best_quality = VPXMAX(qindex + delta_qindex, rc->best_quality); |
| } else { |
| active_best_quality = get_gf_active_quality(cpi, q, cm->bit_depth); |
| } |
| } else { |
| if (oxcf->rc_mode == VPX_Q) { |
| int qindex = cq_level; |
| double q = vp9_convert_qindex_to_q(qindex, cm->bit_depth); |
| double delta_rate[FIXED_GF_INTERVAL] = { 0.50, 1.0, 0.85, 1.0, |
| 0.70, 1.0, 0.85, 1.0 }; |
| int delta_qindex = vp9_compute_qdelta( |
| rc, q, q * delta_rate[cm->current_video_frame % FIXED_GF_INTERVAL], |
| cm->bit_depth); |
| active_best_quality = VPXMAX(qindex + delta_qindex, rc->best_quality); |
| } else { |
| // Use the min of the average Q and active_worst_quality as basis for |
| // active_best. |
| if (cm->current_video_frame > 1) { |
| q = VPXMIN(rc->avg_frame_qindex[INTER_FRAME], active_worst_quality); |
| active_best_quality = inter_minq[q]; |
| } else { |
| active_best_quality = inter_minq[rc->avg_frame_qindex[KEY_FRAME]]; |
| } |
| // For the constrained quality mode we don't want |
| // q to fall below the cq level. |
| if ((oxcf->rc_mode == VPX_CQ) && (active_best_quality < cq_level)) { |
| active_best_quality = cq_level; |
| } |
| } |
| } |
| |
| // Clip the active best and worst quality values to limits |
| active_best_quality = |
| clamp(active_best_quality, rc->best_quality, rc->worst_quality); |
| active_worst_quality = |
| clamp(active_worst_quality, active_best_quality, rc->worst_quality); |
| |
| *top_index = active_worst_quality; |
| *bottom_index = active_best_quality; |
| |
| #if LIMIT_QRANGE_FOR_ALTREF_AND_KEY |
| { |
| int qdelta = 0; |
| vpx_clear_system_state(); |
| |
| // Limit Q range for the adaptive loop. |
| if (cm->frame_type == KEY_FRAME && !rc->this_key_frame_forced && |
| !(cm->current_video_frame == 0)) { |
| qdelta = vp9_compute_qdelta_by_rate( |
| &cpi->rc, cm->frame_type, active_worst_quality, 2.0, cm->bit_depth); |
| } else if (!rc->is_src_frame_alt_ref && |
| (cpi->refresh_golden_frame || cpi->refresh_alt_ref_frame)) { |
| qdelta = vp9_compute_qdelta_by_rate( |
| &cpi->rc, cm->frame_type, active_worst_quality, 1.75, cm->bit_depth); |
| } |
| if (rc->high_source_sad && cpi->sf.use_altref_onepass) qdelta = 0; |
| *top_index = active_worst_quality + qdelta; |
| *top_index = (*top_index > *bottom_index) ? *top_index : *bottom_index; |
| } |
| #endif |
| |
| if (oxcf->rc_mode == VPX_Q) { |
| q = active_best_quality; |
| // Special case code to try and match quality with forced key frames |
| } else if ((cm->frame_type == KEY_FRAME) && rc->this_key_frame_forced) { |
| q = rc->last_boosted_qindex; |
| } else { |
| q = vp9_rc_regulate_q(cpi, rc->this_frame_target, active_best_quality, |
| active_worst_quality); |
| if (q > *top_index) { |
| // Special case when we are targeting the max allowed rate |
| if (rc->this_frame_target >= rc->max_frame_bandwidth) |
| *top_index = q; |
| else |
| q = *top_index; |
| } |
| } |
| |
| assert(*top_index <= rc->worst_quality && *top_index >= rc->best_quality); |
| assert(*bottom_index <= rc->worst_quality && |
| *bottom_index >= rc->best_quality); |
| assert(q <= rc->worst_quality && q >= rc->best_quality); |
| return q; |
| } |
| |
| int vp9_frame_type_qdelta(const VP9_COMP *cpi, int rf_level, int q) { |
| static const double rate_factor_deltas[RATE_FACTOR_LEVELS] = { |
| 1.00, // INTER_NORMAL |
| 1.00, // INTER_HIGH |
| 1.50, // GF_ARF_LOW |
| 1.75, // GF_ARF_STD |
| 2.00, // KF_STD |
| }; |
| const VP9_COMMON *const cm = &cpi->common; |
| |
| int qdelta = vp9_compute_qdelta_by_rate( |
| &cpi->rc, cm->frame_type, q, rate_factor_deltas[rf_level], cm->bit_depth); |
| return qdelta; |
| } |
| |
| #define STATIC_MOTION_THRESH 95 |
| |
| static void pick_kf_q_bound_two_pass(const VP9_COMP *cpi, int *bottom_index, |
| int *top_index) { |
| const VP9_COMMON *const cm = &cpi->common; |
| const RATE_CONTROL *const rc = &cpi->rc; |
| int active_best_quality; |
| int active_worst_quality = cpi->twopass.active_worst_quality; |
| |
| if (rc->this_key_frame_forced) { |
| // Handle the special case for key frames forced when we have reached |
| // the maximum key frame interval. Here force the Q to a range |
| // based on the ambient Q to reduce the risk of popping. |
| double last_boosted_q; |
| int delta_qindex; |
| int qindex; |
| |
| if (cpi->twopass.last_kfgroup_zeromotion_pct >= STATIC_MOTION_THRESH) { |
| qindex = VPXMIN(rc->last_kf_qindex, rc->last_boosted_qindex); |
| active_best_quality = qindex; |
| last_boosted_q = vp9_convert_qindex_to_q(qindex, cm->bit_depth); |
| delta_qindex = vp9_compute_qdelta(rc, last_boosted_q, |
| last_boosted_q * 1.25, cm->bit_depth); |
| active_worst_quality = |
| VPXMIN(qindex + delta_qindex, active_worst_quality); |
| } else { |
| qindex = rc->last_boosted_qindex; |
| last_boosted_q = vp9_convert_qindex_to_q(qindex, cm->bit_depth); |
| delta_qindex = vp9_compute_qdelta(rc, last_boosted_q, |
| last_boosted_q * 0.75, cm->bit_depth); |
| active_best_quality = VPXMAX(qindex + delta_qindex, rc->best_quality); |
| } |
| } else { |
| // Not forced keyframe. |
| double q_adj_factor = 1.0; |
| double q_val; |
| // Baseline value derived from cpi->active_worst_quality and kf boost. |
| active_best_quality = |
| get_kf_active_quality(rc, active_worst_quality, cm->bit_depth); |
| if (cpi->twopass.kf_zeromotion_pct >= STATIC_KF_GROUP_THRESH) { |
| active_best_quality /= 4; |
| } |
| |
| // Dont allow the active min to be lossless (q0) unlesss the max q |
| // already indicates lossless. |
| active_best_quality = |
| VPXMIN(active_worst_quality, VPXMAX(1, active_best_quality)); |
| |
| // Allow somewhat lower kf minq with small image formats. |
| if ((cm->width * cm->height) <= (352 * 288)) { |
| q_adj_factor -= 0.25; |
| } |
| |
| // Make a further adjustment based on the kf zero motion measure. |
| q_adj_factor += 0.05 - (0.001 * (double)cpi->twopass.kf_zeromotion_pct); |
| |
| // Convert the adjustment factor to a qindex delta |
| // on active_best_quality. |
| q_val = vp9_convert_qindex_to_q(active_best_quality, cm->bit_depth); |
| active_best_quality += |
| vp9_compute_qdelta(rc, q_val, q_val * q_adj_factor, cm->bit_depth); |
| } |
| *top_index = active_worst_quality; |
| *bottom_index = active_best_quality; |
| } |
| |
| static int rc_constant_q(const VP9_COMP *cpi, int *bottom_index, int *top_index, |
| int gf_group_index) { |
| const VP9_COMMON *const cm = &cpi->common; |
| const RATE_CONTROL *const rc = &cpi->rc; |
| const VP9EncoderConfig *const oxcf = &cpi->oxcf; |
| const GF_GROUP *gf_group = &cpi->twopass.gf_group; |
| const int is_intra_frame = frame_is_intra_only(cm); |
| |
| const int cq_level = get_active_cq_level_two_pass(&cpi->twopass, rc, oxcf); |
| |
| int q = cq_level; |
| int active_best_quality = cq_level; |
| int active_worst_quality = cq_level; |
| |
| // Key frame qp decision |
| if (is_intra_frame && rc->frames_to_key > 1) |
| pick_kf_q_bound_two_pass(cpi, &active_best_quality, &active_worst_quality); |
| |
| // ARF / GF qp decision |
| if (!is_intra_frame && !rc->is_src_frame_alt_ref && |
| cpi->refresh_alt_ref_frame) { |
| active_best_quality = get_gf_active_quality(cpi, q, cm->bit_depth); |
| |
| // Modify best quality for second level arfs. For mode VPX_Q this |
| // becomes the baseline frame q. |
| if (gf_group->rf_level[gf_group_index] == GF_ARF_LOW) { |
| const int layer_depth = gf_group->layer_depth[gf_group_index]; |
| // linearly fit the frame q depending on the layer depth index from |
| // the base layer ARF. |
| active_best_quality = ((layer_depth - 1) * cq_level + |
| active_best_quality + layer_depth / 2) / |
| layer_depth; |
| } |
| } |
| |
| q = active_best_quality; |
| *top_index = active_worst_quality; |
| *bottom_index = active_best_quality; |
| return q; |
| } |
| |
| static int rc_pick_q_and_bounds_two_pass(const VP9_COMP *cpi, int *bottom_index, |
| int *top_index, int gf_group_index) { |
| const VP9_COMMON *const cm = &cpi->common; |
| const RATE_CONTROL *const rc = &cpi->rc; |
| const VP9EncoderConfig *const oxcf = &cpi->oxcf; |
| const GF_GROUP *gf_group = &cpi->twopass.gf_group; |
| const int cq_level = get_active_cq_level_two_pass(&cpi->twopass, rc, oxcf); |
| int active_best_quality; |
| int active_worst_quality = cpi->twopass.active_worst_quality; |
| int q; |
| int *inter_minq; |
| int arf_active_best_quality_hl; |
| int *arfgf_high_motion_minq, *arfgf_low_motion_minq; |
| const int boost_frame = |
| !rc->is_src_frame_alt_ref && |
| (cpi->refresh_golden_frame || cpi->refresh_alt_ref_frame); |
| |
| ASSIGN_MINQ_TABLE(cm->bit_depth, inter_minq); |
| |
| if (oxcf->rc_mode == VPX_Q) |
| return rc_constant_q(cpi, bottom_index, top_index, gf_group_index); |
| |
| if (frame_is_intra_only(cm)) { |
| pick_kf_q_bound_two_pass(cpi, &active_best_quality, &active_worst_quality); |
| } else if (boost_frame) { |
| // Use the lower of active_worst_quality and recent |
| // average Q as basis for GF/ARF best Q limit unless last frame was |
| // a key frame. |
| if (rc->frames_since_key > 1 && |
| rc->avg_frame_qindex[INTER_FRAME] < active_worst_quality) { |
| q = rc->avg_frame_qindex[INTER_FRAME]; |
| } else { |
| q = active_worst_quality; |
| } |
| // For constrained quality dont allow Q less than the cq level |
| if (oxcf->rc_mode == VPX_CQ) { |
| if (q < cq_level) q = cq_level; |
| } |
| active_best_quality = get_gf_active_quality(cpi, q, cm->bit_depth); |
| arf_active_best_quality_hl = active_best_quality; |
| |
| if (rc->arf_increase_active_best_quality == 1) { |
| ASSIGN_MINQ_TABLE(cm->bit_depth, arfgf_high_motion_minq); |
| arf_active_best_quality_hl = arfgf_high_motion_minq[q]; |
| } else if (rc->arf_increase_active_best_quality == -1) { |
| ASSIGN_MINQ_TABLE(cm->bit_depth, arfgf_low_motion_minq); |
| arf_active_best_quality_hl = arfgf_low_motion_minq[q]; |
| } |
| active_best_quality = |
| (int)((double)active_best_quality * |
| rc->arf_active_best_quality_adjustment_factor + |
| (double)arf_active_best_quality_hl * |
| (1.0 - rc->arf_active_best_quality_adjustment_factor)); |
| |
| // Modify best quality for second level arfs. For mode VPX_Q this |
| // becomes the baseline frame q. |
| if (gf_group->rf_level[gf_group_index] == GF_ARF_LOW) { |
| const int layer_depth = gf_group->layer_depth[gf_group_index]; |
| // linearly fit the frame q depending on the layer depth index from |
| // the base layer ARF. |
| active_best_quality = |
| ((layer_depth - 1) * q + active_best_quality + layer_depth / 2) / |
| layer_depth; |
| } |
| } else { |
| active_best_quality = inter_minq[active_worst_quality]; |
| |
| // For the constrained quality mode we don't want |
| // q to fall below the cq level. |
| if ((oxcf->rc_mode == VPX_CQ) && (active_best_quality < cq_level)) { |
| active_best_quality = cq_level; |
| } |
| } |
| |
| // Extension to max or min Q if undershoot or overshoot is outside |
| // the permitted range. |
| if (frame_is_intra_only(cm) || boost_frame) { |
| const int layer_depth = gf_group->layer_depth[gf_group_index]; |
| active_best_quality -= |
| (cpi->twopass.extend_minq + cpi->twopass.extend_minq_fast); |
| active_worst_quality += (cpi->twopass.extend_maxq / 2); |
| |
| if (gf_group->rf_level[gf_group_index] == GF_ARF_LOW) { |
| assert(layer_depth > 1); |
| active_best_quality = |
| VPXMAX(active_best_quality, |
| cpi->twopass.last_qindex_of_arf_layer[layer_depth - 1]); |
| } |
| } else { |
| const int max_layer_depth = gf_group->max_layer_depth; |
| assert(max_layer_depth > 0); |
| |
| active_best_quality -= |
| (cpi->twopass.extend_minq + cpi->twopass.extend_minq_fast) / 2; |
| active_worst_quality += cpi->twopass.extend_maxq; |
| |
| // For normal frames do not allow an active minq lower than the q used for |
| // the last boosted frame. |
| active_best_quality = |
| VPXMAX(active_best_quality, |
| cpi->twopass.last_qindex_of_arf_layer[max_layer_depth - 1]); |
| } |
| |
| #if LIMIT_QRANGE_FOR_ALTREF_AND_KEY |
| vpx_clear_system_state(); |
| // Static forced key frames Q restrictions dealt with elsewhere. |
| if (!frame_is_intra_only(cm) || !rc->this_key_frame_forced || |
| cpi->twopass.last_kfgroup_zeromotion_pct < STATIC_MOTION_THRESH) { |
| int qdelta = vp9_frame_type_qdelta(cpi, gf_group->rf_level[gf_group_index], |
| active_worst_quality); |
| active_worst_quality = |
| VPXMAX(active_worst_quality + qdelta, active_best_quality); |
| } |
| #endif |
| |
| // Modify active_best_quality for downscaled normal frames. |
| if (rc->frame_size_selector != UNSCALED && !frame_is_kf_gf_arf(cpi)) { |
| int qdelta = vp9_compute_qdelta_by_rate( |
| rc, cm->frame_type, active_best_quality, 2.0, cm->bit_depth); |
| active_best_quality = |
| VPXMAX(active_best_quality + qdelta, rc->best_quality); |
| } |
| |
| active_best_quality = |
| clamp(active_best_quality, rc->best_quality, rc->worst_quality); |
| active_worst_quality = |
| clamp(active_worst_quality, active_best_quality, rc->worst_quality); |
| |
| if (frame_is_intra_only(cm) && rc->this_key_frame_forced) { |
| // If static since last kf use better of last boosted and last kf q. |
| if (cpi->twopass.last_kfgroup_zeromotion_pct >= STATIC_MOTION_THRESH) { |
| q = VPXMIN(rc->last_kf_qindex, rc->last_boosted_qindex); |
| } else { |
| q = rc->last_boosted_qindex; |
| } |
| } else if (frame_is_intra_only(cm) && !rc->this_key_frame_forced) { |
| q = active_best_quality; |
| } else { |
| q = vp9_rc_regulate_q(cpi, rc->this_frame_target, active_best_quality, |
| active_worst_quality); |
| if (q > active_worst_quality) { |
| // Special case when we are targeting the max allowed rate. |
| if (rc->this_frame_target >= rc->max_frame_bandwidth) |
| active_worst_quality = q; |
| else |
| q = active_worst_quality; |
| } |
| } |
| clamp(q, active_best_quality, active_worst_quality); |
| |
| *top_index = active_worst_quality; |
| *bottom_index = active_best_quality; |
| |
| assert(*top_index <= rc->worst_quality && *top_index >= rc->best_quality); |
| assert(*bottom_index <= rc->worst_quality && |
| *bottom_index >= rc->best_quality); |
| assert(q <= rc->worst_quality && q >= rc->best_quality); |
| return q; |
| } |
| |
| int vp9_rc_pick_q_and_bounds(const VP9_COMP *cpi, int *bottom_index, |
| int *top_index) { |
| int q; |
| const int gf_group_index = cpi->twopass.gf_group.index; |
| if (cpi->oxcf.pass == 0) { |
| if (cpi->oxcf.rc_mode == VPX_CBR) |
| q = rc_pick_q_and_bounds_one_pass_cbr(cpi, bottom_index, top_index); |
| else |
| q = rc_pick_q_and_bounds_one_pass_vbr(cpi, bottom_index, top_index); |
| } else { |
| q = rc_pick_q_and_bounds_two_pass(cpi, bottom_index, top_index, |
| gf_group_index); |
| } |
| if (cpi->sf.use_nonrd_pick_mode) { |
| if (cpi->sf.force_frame_boost == 1) q -= cpi->sf.max_delta_qindex; |
| |
| if (q < *bottom_index) |
| *bottom_index = q; |
| else if (q > *top_index) |
| *top_index = q; |
| } |
| return q; |
| } |
| |
| void vp9_configure_buffer_updates(VP9_COMP *cpi, int gf_group_index) { |
| VP9_COMMON *cm = &cpi->common; |
| TWO_PASS *const twopass = &cpi->twopass; |
| |
| cpi->rc.is_src_frame_alt_ref = 0; |
| cm->show_existing_frame = 0; |
| cpi->rc.show_arf_as_gld = 0; |
| switch (twopass->gf_group.update_type[gf_group_index]) { |
| case KF_UPDATE: |
| cpi->refresh_last_frame = 1; |
| cpi->refresh_golden_frame = 1; |
| cpi->refresh_alt_ref_frame = 1; |
| break; |
| case LF_UPDATE: |
| cpi->refresh_last_frame = 1; |
| cpi->refresh_golden_frame = 0; |
| cpi->refresh_alt_ref_frame = 0; |
| break; |
| case GF_UPDATE: |
| cpi->refresh_last_frame = 1; |
| cpi->refresh_golden_frame = 1; |
| cpi->refresh_alt_ref_frame = 0; |
| break; |
| case OVERLAY_UPDATE: |
| cpi->refresh_last_frame = 0; |
| cpi->refresh_golden_frame = 1; |
| cpi->refresh_alt_ref_frame = 0; |
| cpi->rc.is_src_frame_alt_ref = 1; |
| if (cpi->rc.preserve_arf_as_gld) { |
| cpi->rc.show_arf_as_gld = 1; |
| cpi->refresh_golden_frame = 0; |
| cm->show_existing_frame = 1; |
| cm->refresh_frame_context = 0; |
| } |
| break; |
| case MID_OVERLAY_UPDATE: |
| cpi->refresh_last_frame = 1; |
| cpi->refresh_golden_frame = 0; |
| cpi->refresh_alt_ref_frame = 0; |
| cpi->rc.is_src_frame_alt_ref = 1; |
| break; |
| case USE_BUF_FRAME: |
| cpi->refresh_last_frame = 0; |
| cpi->refresh_golden_frame = 0; |
| cpi->refresh_alt_ref_frame = 0; |
| cpi->rc.is_src_frame_alt_ref = 1; |
| cm->show_existing_frame = 1; |
| cm->refresh_frame_context = 0; |
| break; |
| default: |
| assert(twopass->gf_group.update_type[gf_group_index] == ARF_UPDATE); |
| cpi->refresh_last_frame = 0; |
| cpi->refresh_golden_frame = 0; |
| cpi->refresh_alt_ref_frame = 1; |
| break; |
| } |
| } |
| |
| void vp9_estimate_qp_gop(VP9_COMP *cpi) { |
| int gop_length = cpi->twopass.gf_group.gf_group_size; |
| int bottom_index, top_index; |
| int idx; |
| const int gf_index = cpi->twopass.gf_group.index; |
| const int is_src_frame_alt_ref = cpi->rc.is_src_frame_alt_ref; |
| const int refresh_frame_context = cpi->common.refresh_frame_context; |
| |
| for (idx = 1; idx <= gop_length; ++idx) { |
| TplDepFrame *tpl_frame = &cpi->tpl_stats[idx]; |
| int target_rate = cpi->twopass.gf_group.bit_allocation[idx]; |
| cpi->twopass.gf_group.index = idx; |
| vp9_rc_set_frame_target(cpi, target_rate); |
| vp9_configure_buffer_updates(cpi, idx); |
| tpl_frame->base_qindex = |
| rc_pick_q_and_bounds_two_pass(cpi, &bottom_index, &top_index, idx); |
| tpl_frame->base_qindex = VPXMAX(tpl_frame->base_qindex, 1); |
| } |
| // Reset the actual index and frame update |
| cpi->twopass.gf_group.index = gf_index; |
| cpi->rc.is_src_frame_alt_ref = is_src_frame_alt_ref; |
| cpi->common.refresh_frame_context = refresh_frame_context; |
| vp9_configure_buffer_updates(cpi, gf_index); |
| } |
| |
| void vp9_rc_compute_frame_size_bounds(const VP9_COMP *cpi, int frame_target, |
| int *frame_under_shoot_limit, |
| int *frame_over_shoot_limit) { |
| if (cpi->oxcf.rc_mode == VPX_Q) { |
| *frame_under_shoot_limit = 0; |
| *frame_over_shoot_limit = INT_MAX; |
| } else { |
| // For very small rate targets where the fractional adjustment |
| // may be tiny make sure there is at least a minimum range. |
| const int tol_low = |
| (int)(((int64_t)cpi->sf.recode_tolerance_low * frame_target) / 100); |
| const int tol_high = |
| (int)(((int64_t)cpi->sf.recode_tolerance_high * frame_target) / 100); |
| *frame_under_shoot_limit = VPXMAX(frame_target - tol_low - 100, 0); |
| *frame_over_shoot_limit = |
| VPXMIN(frame_target + tol_high + 100, cpi->rc.max_frame_bandwidth); |
| } |
| } |
| |
| void vp9_rc_set_frame_target(VP9_COMP *cpi, int target) { |
| const VP9_COMMON *const cm = &cpi->common; |
| RATE_CONTROL *const rc = &cpi->rc; |
| |
| rc->this_frame_target = target; |
| |
| // Modify frame size target when down-scaling. |
| if (cpi->oxcf.resize_mode == RESIZE_DYNAMIC && |
| rc->frame_size_selector != UNSCALED) { |
| rc->this_frame_target = (int)(rc->this_frame_target * |
| rate_thresh_mult[rc->frame_size_selector]); |
| } |
| |
| #if CONFIG_RATE_CTRL |
| if (cpi->encode_command.use_external_target_frame_bits) { |
| rc->this_frame_target = cpi->encode_command.target_frame_bits; |
| } |
| #endif |
| |
| // Target rate per SB64 (including partial SB64s. |
| rc->sb64_target_rate = (int)(((int64_t)rc->this_frame_target * 64 * 64) / |
| (cm->width * cm->height)); |
| } |
| |
| static void update_alt_ref_frame_stats(VP9_COMP *cpi) { |
| // this frame refreshes means next frames don't unless specified by user |
| RATE_CONTROL *const rc = &cpi->rc; |
| rc->frames_since_golden = 0; |
| |
| // Mark the alt ref as done (setting to 0 means no further alt refs pending). |
| rc->source_alt_ref_pending = 0; |
| |
| // Set the alternate reference frame active flag |
| rc->source_alt_ref_active = 1; |
| } |
| |
| static void update_golden_frame_stats(VP9_COMP *cpi) { |
| RATE_CONTROL *const rc = &cpi->rc; |
| |
| // Update the Golden frame usage counts. |
| if (cpi->refresh_golden_frame) { |
| // this frame refreshes means next frames don't unless specified by user |
| rc->frames_since_golden = 0; |
| |
| // If we are not using alt ref in the up and coming group clear the arf |
| // active flag. In multi arf group case, if the index is not 0 then |
| // we are overlaying a mid group arf so should not reset the flag. |
| if (cpi->oxcf.pass == 2) { |
| if (!rc->source_alt_ref_pending && (cpi->twopass.gf_group.index == 0)) |
| rc->source_alt_ref_active = 0; |
| } else if (!rc->source_alt_ref_pending) { |
| rc->source_alt_ref_active = 0; |
| } |
| |
| // Decrement count down till next gf |
| if (rc->frames_till_gf_update_due > 0) rc->frames_till_gf_update_due--; |
| |
| } else if (!cpi->refresh_alt_ref_frame) { |
| // Decrement count down till next gf |
| if (rc->frames_till_gf_update_due > 0) rc->frames_till_gf_update_due--; |
| |
| rc->frames_since_golden++; |
| |
| if (rc->show_arf_as_gld) { |
| rc->frames_since_golden = 0; |
| // If we are not using alt ref in the up and coming group clear the arf |
| // active flag. In multi arf group case, if the index is not 0 then |
| // we are overlaying a mid group arf so should not reset the flag. |
| if (!rc->source_alt_ref_pending && (cpi->twopass.gf_group.index == 0)) |
| rc->source_alt_ref_active = 0; |
| } |
| } |
| } |
| |
| static void update_altref_usage(VP9_COMP *const cpi) { |
| VP9_COMMON *const cm = &cpi->common; |
| int sum_ref_frame_usage = 0; |
| int arf_frame_usage = 0; |
| int mi_row, mi_col; |
| if (cpi->rc.alt_ref_gf_group && !cpi->rc.is_src_frame_alt_ref && |
| !cpi->refresh_golden_frame && !cpi->refresh_alt_ref_frame) |
| for (mi_row = 0; mi_row < cm->mi_rows; mi_row += 8) { |
| for (mi_col = 0; mi_col < cm->mi_cols; mi_col += 8) { |
| int sboffset = ((cm->mi_cols + 7) >> 3) * (mi_row >> 3) + (mi_col >> 3); |
| sum_ref_frame_usage += cpi->count_arf_frame_usage[sboffset] + |
| cpi->count_lastgolden_frame_usage[sboffset]; |
| arf_frame_usage += cpi->count_arf_frame_usage[sboffset]; |
| } |
| } |
| if (sum_ref_frame_usage > 0) { |
| double altref_count = 100.0 * arf_frame_usage / sum_ref_frame_usage; |
| cpi->rc.perc_arf_usage = |
| 0.75 * cpi->rc.perc_arf_usage + 0.25 * altref_count; |
| } |
| } |
| |
| void vp9_compute_frame_low_motion(VP9_COMP *const cpi) { |
| VP9_COMMON *const cm = &cpi->common; |
| SVC *const svc = &cpi->svc; |
| int mi_row, mi_col; |
| MODE_INFO **mi = cm->mi_grid_visible; |
| RATE_CONTROL *const rc = &cpi->rc; |
| const int rows = cm->mi_rows, cols = cm->mi_cols; |
| int cnt_zeromv = 0; |
| for (mi_row = 0; mi_row < rows; mi_row++) { |
| for (mi_col = 0; mi_col < cols; mi_col++) { |
| if (mi[0]->ref_frame[0] == LAST_FRAME && |
| abs(mi[0]->mv[0].as_mv.row) < 16 && abs(mi[0]->mv[0].as_mv.col) < 16) |
| cnt_zeromv++; |
| mi++; |
| } |
| mi += 8; |
| } |
| cnt_zeromv = 100 * cnt_zeromv / (rows * cols); |
| rc->avg_frame_low_motion = (3 * rc->avg_frame_low_motion + cnt_zeromv) >> 2; |
| |
| // For SVC: set avg_frame_low_motion (only computed on top spatial layer) |
| // to all lower spatial layers. |
| if (cpi->use_svc && svc->spatial_layer_id == svc->number_spatial_layers - 1) { |
| int i; |
| for (i = 0; i < svc->number_spatial_layers - 1; ++i) { |
| const int layer = LAYER_IDS_TO_IDX(i, svc->temporal_layer_id, |
| svc->number_temporal_layers); |
| LAYER_CONTEXT *const lc = &svc->layer_context[layer]; |
| RATE_CONTROL *const lrc = &lc->rc; |
| lrc->avg_frame_low_motion = rc->avg_frame_low_motion; |
| } |
| } |
| } |
| |
| void vp9_rc_postencode_update(VP9_COMP *cpi, uint64_t bytes_used) { |
| const VP9_COMMON *const cm = &cpi->common; |
| const VP9EncoderConfig *const oxcf = &cpi->oxcf; |
| RATE_CONTROL *const rc = &cpi->rc; |
| SVC *const svc = &cpi->svc; |
| const int qindex = cm->base_qindex; |
| const GF_GROUP *gf_group = &cpi->twopass.gf_group; |
| const int gf_group_index = cpi->twopass.gf_group.index; |
| const int layer_depth = gf_group->layer_depth[gf_group_index]; |
| |
| // Update rate control heuristics |
| rc->projected_frame_size = (int)(bytes_used << 3); |
| |
| // Post encode loop adjustment of Q prediction. |
| vp9_rc_update_rate_correction_factors(cpi); |
| |
| // Keep a record of last Q and ambient average Q. |
| if (frame_is_intra_only(cm)) { |
| rc->last_q[KEY_FRAME] = qindex; |
| rc->avg_frame_qindex[KEY_FRAME] = |
| ROUND_POWER_OF_TWO(3 * rc->avg_frame_qindex[KEY_FRAME] + qindex, 2); |
| if (cpi->use_svc) { |
| int i = 0; |
| SVC *svc = &cpi->svc; |
| for (i = 0; i < svc->number_temporal_layers; ++i) { |
| const int layer = LAYER_IDS_TO_IDX(svc->spatial_layer_id, i, |
| svc->number_temporal_layers); |
| LAYER_CONTEXT *lc = &svc->layer_context[layer]; |
| RATE_CONTROL *lrc = &lc->rc; |
| lrc->last_q[KEY_FRAME] = rc->last_q[KEY_FRAME]; |
| lrc->avg_frame_qindex[KEY_FRAME] = rc->avg_frame_qindex[KEY_FRAME]; |
| } |
| } |
| } else { |
| if ((cpi->use_svc && oxcf->rc_mode == VPX_CBR) || |
| (!rc->is_src_frame_alt_ref && |
| !(cpi->refresh_golden_frame || cpi->refresh_alt_ref_frame))) { |
| rc->last_q[INTER_FRAME] = qindex; |
| rc->avg_frame_qindex[INTER_FRAME] = |
| ROUND_POWER_OF_TWO(3 * rc->avg_frame_qindex[INTER_FRAME] + qindex, 2); |
| rc->ni_frames++; |
| rc->tot_q += vp9_convert_qindex_to_q(qindex, cm->bit_depth); |
| rc->avg_q = rc->tot_q / rc->ni_frames; |
| // Calculate the average Q for normal inter frames (not key or GFU |
| // frames). |
| rc->ni_tot_qi += qindex; |
| rc->ni_av_qi = rc->ni_tot_qi / rc->ni_frames; |
| } |
| } |
| |
| if (cpi->use_svc) vp9_svc_adjust_avg_frame_qindex(cpi); |
| |
| // Keep record of last boosted (KF/KF/ARF) Q value. |
| // If the current frame is coded at a lower Q then we also update it. |
| // If all mbs in this group are skipped only update if the Q value is |
| // better than that already stored. |
| // This is used to help set quality in forced key frames to reduce popping |
| if ((qindex < rc->last_boosted_qindex) || (cm->frame_type == KEY_FRAME) || |
| (!rc->constrained_gf_group && |
| (cpi->refresh_alt_ref_frame || |
| (cpi->refresh_golden_frame && !rc->is_src_frame_alt_ref)))) { |
| rc->last_boosted_qindex = qindex; |
| } |
| |
| if ((qindex < cpi->twopass.last_qindex_of_arf_layer[layer_depth]) || |
| (cm->frame_type == KEY_FRAME) || |
| (!rc->constrained_gf_group && |
| (cpi->refresh_alt_ref_frame || |
| (cpi->refresh_golden_frame && !rc->is_src_frame_alt_ref)))) { |
| cpi->twopass.last_qindex_of_arf_layer[layer_depth] = qindex; |
| } |
| |
| if (frame_is_intra_only(cm)) rc->last_kf_qindex = qindex; |
| |
| update_buffer_level_postencode(cpi, rc->projected_frame_size); |
| |
| // Rolling monitors of whether we are over or underspending used to help |
| // regulate min and Max Q in two pass. |
| if (!frame_is_intra_only(cm)) { |
| rc->rolling_target_bits = (int)ROUND64_POWER_OF_TWO( |
| (int64_t)rc->rolling_target_bits * 3 + rc->this_frame_target, 2); |
| rc->rolling_actual_bits = (int)ROUND64_POWER_OF_TWO( |
| (int64_t)rc->rolling_actual_bits * 3 + rc->projected_frame_size, 2); |
| rc->long_rolling_target_bits = (int)ROUND64_POWER_OF_TWO( |
| (int64_t)rc->long_rolling_target_bits * 31 + rc->this_frame_target, 5); |
| rc->long_rolling_actual_bits = (int)ROUND64_POWER_OF_TWO( |
| (int64_t)rc->long_rolling_actual_bits * 31 + rc->projected_frame_size, |
| 5); |
| } |
| |
| // Actual bits spent |
| rc->total_actual_bits += rc->projected_frame_size; |
| rc->total_target_bits += cm->show_frame ? rc->avg_frame_bandwidth : 0; |
| |
| rc->total_target_vs_actual = rc->total_actual_bits - rc->total_target_bits; |
| |
| if (!cpi->use_svc) { |
| if (is_altref_enabled(cpi) && cpi->refresh_alt_ref_frame && |
| (!frame_is_intra_only(cm))) |
| // Update the alternate reference frame stats as appropriate. |
| update_alt_ref_frame_stats(cpi); |
| else |
| // Update the Golden frame stats as appropriate. |
| update_golden_frame_stats(cpi); |
| } |
| |
| // If second (long term) temporal reference is used for SVC, |
| // update the golden frame counter, only for base temporal layer. |
| if (cpi->use_svc && svc->use_gf_temporal_ref_current_layer && |
| svc->temporal_layer_id == 0) { |
| int i = 0; |
| if (cpi->refresh_golden_frame) |
| rc->frames_since_golden = 0; |
| else |
| rc->frames_since_golden++; |
| // Decrement count down till next gf |
| if (rc->frames_till_gf_update_due > 0) rc->frames_till_gf_update_due--; |
| // Update the frames_since_golden for all upper temporal layers. |
| for (i = 1; i < svc->number_temporal_layers; ++i) { |
| const int layer = LAYER_IDS_TO_IDX(svc->spatial_layer_id, i, |
| svc->number_temporal_layers); |
| LAYER_CONTEXT *const lc = &svc->layer_context[layer]; |
| RATE_CONTROL *const lrc = &lc->rc; |
| lrc->frames_since_golden = rc->frames_since_golden; |
| } |
| } |
| |
| if (frame_is_intra_only(cm)) rc->frames_since_key = 0; |
| if (cm->show_frame) { |
| rc->frames_since_key++; |
| rc->frames_to_key--; |
| } |
| |
| // Trigger the resizing of the next frame if it is scaled. |
| if (oxcf->pass != 0) { |
| cpi->resize_pending = |
| rc->next_frame_size_selector != rc->frame_size_selector; |
| rc->frame_size_selector = rc->next_frame_size_selector; |
| } |
| |
| if (oxcf->pass == 0) { |
| if (!frame_is_intra_only(cm)) |
| if (cpi->sf.use_altref_onepass) update_altref_usage(cpi); |
| cpi->rc.last_frame_is_src_altref = cpi->rc.is_src_frame_alt_ref; |
| } |
| |
| if (!frame_is_intra_only(cm)) rc->reset_high_source_sad = 0; |
| |
| rc->last_avg_frame_bandwidth = rc->avg_frame_bandwidth; |
| if (cpi->use_svc && svc->spatial_layer_id < svc->number_spatial_layers - 1) |
| svc->lower_layer_qindex = cm->base_qindex; |
| } |
| |
| void vp9_rc_postencode_update_drop_frame(VP9_COMP *cpi) { |
| cpi->common.current_video_frame++; |
| cpi->rc.frames_since_key++; |
| cpi->rc.frames_to_key--; |
| cpi->rc.rc_2_frame = 0; |
| cpi->rc.rc_1_frame = 0; |
| cpi->rc.last_avg_frame_bandwidth = cpi->rc.avg_frame_bandwidth; |
| cpi->rc.last_q[INTER_FRAME] = cpi->common.base_qindex; |
| // For SVC on dropped frame when framedrop_mode != LAYER_DROP: |
| // in this mode the whole superframe may be dropped if only a single layer |
| // has buffer underflow (below threshold). Since this can then lead to |
| // increasing buffer levels/overflow for certain layers even though whole |
| // superframe is dropped, we cap buffer level if its already stable. |
| if (cpi->use_svc && cpi->svc.framedrop_mode != LAYER_DROP && |
| cpi->rc.buffer_level > cpi->rc.optimal_buffer_level) { |
| cpi->rc.buffer_level = cpi->rc.optimal_buffer_level; |
| cpi->rc.bits_off_target = cpi->rc.optimal_buffer_level; |
| } |
| } |
| |
| static int calc_pframe_target_size_one_pass_vbr(const VP9_COMP *const cpi) { |
| const RATE_CONTROL *const rc = &cpi->rc; |
| const int af_ratio = rc->af_ratio_onepass_vbr; |
| int64_t target = |
| (!rc->is_src_frame_alt_ref && |
| (cpi->refresh_golden_frame || cpi->refresh_alt_ref_frame)) |
| ? ((int64_t)rc->avg_frame_bandwidth * rc->baseline_gf_interval * |
| af_ratio) / |
| (rc->baseline_gf_interval + af_ratio - 1) |
| : ((int64_t)rc->avg_frame_bandwidth * rc->baseline_gf_interval) / |
| (rc->baseline_gf_interval + af_ratio - 1); |
| if (target > INT_MAX) target = INT_MAX; |
| return vp9_rc_clamp_pframe_target_size(cpi, (int)target); |
| } |
| |
| static int calc_iframe_target_size_one_pass_vbr(const VP9_COMP *const cpi) { |
| static const int kf_ratio = 25; |
| const RATE_CONTROL *rc = &cpi->rc; |
| const int target = rc->avg_frame_bandwidth * kf_ratio; |
| return vp9_rc_clamp_iframe_target_size(cpi, target); |
| } |
| |
| static void adjust_gfint_frame_constraint(VP9_COMP *cpi, int frame_constraint) { |
| RATE_CONTROL *const rc = &cpi->rc; |
| rc->constrained_gf_group = 0; |
| // Reset gf interval to make more equal spacing for frame_constraint. |
| if ((frame_constraint <= 7 * rc->baseline_gf_interval >> 2) && |
| (frame_constraint > rc->baseline_gf_interval)) { |
| rc->baseline_gf_interval = frame_constraint >> 1; |
| if (rc->baseline_gf_interval < 5) |
| rc->baseline_gf_interval = frame_constraint; |
| rc->constrained_gf_group = 1; |
| } else { |
| // Reset to keep gf_interval <= frame_constraint. |
| if (rc->baseline_gf_interval > frame_constraint) { |
| rc->baseline_gf_interval = frame_constraint; |
| rc->constrained_gf_group = 1; |
| } |
| } |
| } |
| |
| void vp9_rc_get_one_pass_vbr_params(VP9_COMP *cpi) { |
| VP9_COMMON *const cm = &cpi->common; |
| RATE_CONTROL *const rc = &cpi->rc; |
| int target; |
| if (!cpi->refresh_alt_ref_frame && |
| (cm->current_video_frame == 0 || (cpi->frame_flags & FRAMEFLAGS_KEY) || |
| rc->frames_to_key == 0)) { |
| cm->frame_type = KEY_FRAME; |
| rc->this_key_frame_forced = |
| cm->current_video_frame != 0 && rc->frames_to_key == 0; |
| rc->frames_to_key = cpi->oxcf.key_freq; |
| rc->kf_boost = DEFAULT_KF_BOOST; |
| rc->source_alt_ref_active = 0; |
| } else { |
| cm->frame_type = INTER_FRAME; |
| } |
| if (rc->frames_till_gf_update_due == 0) { |
| double rate_err = 1.0; |
| rc->gfu_boost = DEFAULT_GF_BOOST; |
| if (cpi->oxcf.aq_mode == CYCLIC_REFRESH_AQ && cpi->oxcf.pass == 0) { |
| vp9_cyclic_refresh_set_golden_update(cpi); |
| } else { |
| rc->baseline_gf_interval = VPXMIN( |
| 20, VPXMAX(10, (rc->min_gf_interval + rc->max_gf_interval) / 2)); |
| } |
| rc->af_ratio_onepass_vbr = 10; |
| if (rc->rolling_target_bits > 0) |
| rate_err = |
| (double)rc->rolling_actual_bits / (double)rc->rolling_target_bits; |
| if (cm->current_video_frame > 30) { |
| if (rc->avg_frame_qindex[INTER_FRAME] > (7 * rc->worst_quality) >> 3 && |
| rate_err > 3.5) { |
| rc->baseline_gf_interval = |
| VPXMIN(15, (3 * rc->baseline_gf_interval) >> 1); |
| } else if (rc->avg_frame_low_motion < 20) { |
| // Decrease gf interval for high motion case. |
| rc->baseline_gf_interval = VPXMAX(6, rc->baseline_gf_interval >> 1); |
| } |
| // Adjust boost and af_ratio based on avg_frame_low_motion, which varies |
| // between 0 and 100 (stationary, 100% zero/small motion). |
| rc->gfu_boost = |
| VPXMAX(500, DEFAULT_GF_BOOST * (rc->avg_frame_low_motion << 1) / |
| (rc->avg_frame_low_motion + 100)); |
| rc->af_ratio_onepass_vbr = VPXMIN(15, VPXMAX(5, 3 * rc->gfu_boost / 400)); |
| } |
| adjust_gfint_frame_constraint(cpi, rc->frames_to_key); |
| rc->frames_till_gf_update_due = rc->baseline_gf_interval; |
| cpi->refresh_golden_frame = 1; |
| rc->source_alt_ref_pending = 0; |
| rc->alt_ref_gf_group = 0; |
| if (cpi->sf.use_altref_onepass && cpi->oxcf.enable_auto_arf) { |
| rc->source_alt_ref_pending = 1; |
| rc->alt_ref_gf_group = 1; |
| } |
| } |
| if (cm->frame_type == KEY_FRAME) |
| target = calc_iframe_target_size_one_pass_vbr(cpi); |
| else |
| target = calc_pframe_target_size_one_pass_vbr(cpi); |
| vp9_rc_set_frame_target(cpi, target); |
| if (cpi->oxcf.aq_mode == CYCLIC_REFRESH_AQ && cpi->oxcf.pass == 0) |
| vp9_cyclic_refresh_update_parameters(cpi); |
| } |
| |
| int vp9_calc_pframe_target_size_one_pass_cbr(const VP9_COMP *cpi) { |
| const VP9EncoderConfig *oxcf = &cpi->oxcf; |
| const RATE_CONTROL *rc = &cpi->rc; |
| const SVC *const svc = &cpi->svc; |
| const int64_t diff = rc->optimal_buffer_level - rc->buffer_level; |
| const int64_t one_pct_bits = 1 + rc->optimal_buffer_level / 100; |
| int min_frame_target = |
| VPXMAX(rc->avg_frame_bandwidth >> 4, FRAME_OVERHEAD_BITS); |
| int target; |
| |
| if (oxcf->gf_cbr_boost_pct) { |
| const int af_ratio_pct = oxcf->gf_cbr_boost_pct + 100; |
| target = cpi->refresh_golden_frame |
| ? (rc->avg_frame_bandwidth * rc->baseline_gf_interval * |
| af_ratio_pct) / |
| (rc->baseline_gf_interval * 100 + af_ratio_pct - 100) |
| : (rc->avg_frame_bandwidth * rc->baseline_gf_interval * 100) / |
| (rc->baseline_gf_interval * 100 + af_ratio_pct - 100); |
| } else { |
| target = rc->avg_frame_bandwidth; |
| } |
| if (is_one_pass_cbr_svc(cpi)) { |
| // Note that for layers, avg_frame_bandwidth is the cumulative |
| // per-frame-bandwidth. For the target size of this frame, use the |
| // layer average frame size (i.e., non-cumulative per-frame-bw). |
| int layer = LAYER_IDS_TO_IDX(svc->spatial_layer_id, svc->temporal_layer_id, |
| svc->number_temporal_layers); |
| const LAYER_CONTEXT *lc = &svc->layer_context[layer]; |
| target = lc->avg_frame_size; |
| min_frame_target = VPXMAX(lc->avg_frame_size >> 4, FRAME_OVERHEAD_BITS); |
| } |
| if (diff > 0) { |
| // Lower the target bandwidth for this frame. |
| const int pct_low = (int)VPXMIN(diff / one_pct_bits, oxcf->under_shoot_pct); |
| target -= (target * pct_low) / 200; |
| } else if (diff < 0) { |
| // Increase the target bandwidth for this frame. |
| const int pct_high = |
| (int)VPXMIN(-diff / one_pct_bits, oxcf->over_shoot_pct); |
| target += (target * pct_high) / 200; |
| } |
| if (oxcf->rc_max_inter_bitrate_pct) { |
| const int max_rate = |
| rc->avg_frame_bandwidth * oxcf->rc_max_inter_bitrate_pct / 100; |
| target = VPXMIN(target, max_rate); |
| } |
| return VPXMAX(min_frame_target, target); |
| } |
| |
| int vp9_calc_iframe_target_size_one_pass_cbr(const VP9_COMP *cpi) { |
| const RATE_CONTROL *rc = &cpi->rc; |
| const VP9EncoderConfig *oxcf = &cpi->oxcf; |
| const SVC *const svc = &cpi->svc; |
| int target; |
| if (cpi->common.current_video_frame == 0) { |
| target = ((rc->starting_buffer_level / 2) > INT_MAX) |
| ? INT_MAX |
| : (int)(rc->starting_buffer_level / 2); |
| } else { |
| int kf_boost = 32; |
| double framerate = cpi->framerate; |
| if (svc->number_temporal_layers > 1 && oxcf->rc_mode == VPX_CBR) { |
| // Use the layer framerate for temporal layers CBR mode. |
| const int layer = |
| LAYER_IDS_TO_IDX(svc->spatial_layer_id, svc->temporal_layer_id, |
| svc->number_temporal_layers); |
| const LAYER_CONTEXT *lc = &svc->layer_context[layer]; |
| framerate = lc->framerate; |
| } |
| kf_boost = VPXMAX(kf_boost, (int)(2 * framerate - 16)); |
| if (rc->frames_since_key < framerate / 2) { |
| kf_boost = (int)(kf_boost * rc->frames_since_key / (framerate / 2)); |
| } |
| target = ((16 + kf_boost) * rc->avg_frame_bandwidth) >> 4; |
| } |
| return vp9_rc_clamp_iframe_target_size(cpi, target); |
| } |
| |
| static void set_intra_only_frame(VP9_COMP *cpi) { |
| VP9_COMMON *const cm = &cpi->common; |
| SVC *const svc = &cpi->svc; |
| // Don't allow intra_only frame for bypass/flexible SVC mode, or if number |
| // of spatial layers is 1 or if number of spatial or temporal layers > 3. |
| // Also if intra-only is inserted on very first frame, don't allow if |
| // if number of temporal layers > 1. This is because on intra-only frame |
| // only 3 reference buffers can be updated, but for temporal layers > 1 |
| // we generally need to use buffer slots 4 and 5. |
| if ((cm->current_video_frame == 0 && svc->number_temporal_layers > 1) || |
| svc->temporal_layering_mode == VP9E_TEMPORAL_LAYERING_MODE_BYPASS || |
| svc->number_spatial_layers > 3 || svc->number_temporal_layers > 3 || |
| svc->number_spatial_layers == 1) |
| return; |
| cm->show_frame = 0; |
| cm->intra_only = 1; |
| cm->frame_type = INTER_FRAME; |
| cpi->ext_refresh_frame_flags_pending = 1; |
| cpi->ext_refresh_last_frame = 1; |
| cpi->ext_refresh_golden_frame = 1; |
| cpi->ext_refresh_alt_ref_frame = 1; |
| if (cm->current_video_frame == 0) { |
| cpi->lst_fb_idx = 0; |
| cpi->gld_fb_idx = 1; |
| cpi->alt_fb_idx = 2; |
| } else { |
| int i; |
| int count = 0; |
| cpi->lst_fb_idx = -1; |
| cpi->gld_fb_idx = -1; |
| cpi->alt_fb_idx = -1; |
| // For intra-only frame we need to refresh all slots that were |
| // being used for the base layer (fb_idx_base[i] == 1). |
| // Start with assigning last first, then golden and then alt. |
| for (i = 0; i < REF_FRAMES; ++i) { |
| if (svc->fb_idx_base[i] == 1) count++; |
| if (count == 1 && cpi->lst_fb_idx == -1) cpi->lst_fb_idx = i; |
| if (count == 2 && cpi->gld_fb_idx == -1) cpi->gld_fb_idx = i; |
| if (count == 3 && cpi->alt_fb_idx == -1) cpi->alt_fb_idx = i; |
| } |
| // If golden or alt is not being used for base layer, then set them |
| // to the lst_fb_idx. |
| if (cpi->gld_fb_idx == -1) cpi->gld_fb_idx = cpi->lst_fb_idx; |
| if (cpi->alt_fb_idx == -1) cpi->alt_fb_idx = cpi->lst_fb_idx; |
| } |
| } |
| |
| void vp9_rc_get_svc_params(VP9_COMP *cpi) { |
| VP9_COMMON *const cm = &cpi->common; |
| RATE_CONTROL *const rc = &cpi->rc; |
| SVC *const svc = &cpi->svc; |
| int target = rc->avg_frame_bandwidth; |
| int layer = LAYER_IDS_TO_IDX(svc->spatial_layer_id, svc->temporal_layer_id, |
| svc->number_temporal_layers); |
| if (svc->first_spatial_layer_to_encode) |
| svc->layer_context[svc->temporal_layer_id].is_key_frame = 0; |
| // Periodic key frames is based on the super-frame counter |
| // (svc.current_superframe), also only base spatial layer is key frame. |
| // Key frame is set for any of the following: very first frame, frame flags |
| // indicates key, superframe counter hits key frequency, or (non-intra) sync |
| // flag is set for spatial layer 0. |
| if ((cm->current_video_frame == 0 && !svc->previous_frame_is_intra_only) || |
| (cpi->frame_flags & FRAMEFLAGS_KEY) || |
| (cpi->oxcf.auto_key && |
| (svc->current_superframe % cpi->oxcf.key_freq == 0) && |
| !svc->previous_frame_is_intra_only && svc->spatial_layer_id == 0) || |
| (svc->spatial_layer_sync[0] == 1 && svc->spatial_layer_id == 0)) { |
| cm->frame_type = KEY_FRAME; |
| rc->source_alt_ref_active = 0; |
| if (is_one_pass_cbr_svc(cpi)) { |
| if (cm->current_video_frame > 0) vp9_svc_reset_temporal_layers(cpi, 1); |
| layer = LAYER_IDS_TO_IDX(svc->spatial_layer_id, svc->temporal_layer_id, |
| svc->number_temporal_layers); |
| svc->layer_context[layer].is_key_frame = 1; |
| cpi->ref_frame_flags &= (~VP9_LAST_FLAG & ~VP9_GOLD_FLAG & ~VP9_ALT_FLAG); |
| // Assumption here is that LAST_FRAME is being updated for a keyframe. |
| // Thus no change in update flags. |
| target = vp9_calc_iframe_target_size_one_pass_cbr(cpi); |
| } |
| } else { |
| cm->frame_type = INTER_FRAME; |
| if (is_one_pass_cbr_svc(cpi)) { |
| LAYER_CONTEXT *lc = &svc->layer_context[layer]; |
| // Add condition current_video_frame > 0 for the case where first frame |
| // is intra only followed by overlay/copy frame. In this case we don't |
| // want to reset is_key_frame to 0 on overlay/copy frame. |
| lc->is_key_frame = |
| (svc->spatial_layer_id == 0 && cm->current_video_frame > 0) |
| ? 0 |
| : svc->layer_context[svc->temporal_layer_id].is_key_frame; |
| target = vp9_calc_pframe_target_size_one_pass_cbr(cpi); |
| } |
| } |
| |
| if (svc->simulcast_mode) { |
| if (svc->spatial_layer_id > 0 && |
| svc->layer_context[layer].is_key_frame == 1) { |
| cm->frame_type = KEY_FRAME; |
| cpi->ref_frame_flags &= (~VP9_LAST_FLAG & ~VP9_GOLD_FLAG & ~VP9_ALT_FLAG); |
| target = vp9_calc_iframe_target_size_one_pass_cbr(cpi); |
| } |
| // Set the buffer idx and refresh flags for key frames in simulcast mode. |
| // Note the buffer slot for long-term reference is set below (line 2255), |
| // and alt_ref is used for that on key frame. So use last and golden for |
| // the other two normal slots. |
| if (cm->frame_type == KEY_FRAME) { |
| if (svc->number_spatial_layers == 2) { |
| if (svc->spatial_layer_id == 0) { |
| cpi->lst_fb_idx = 0; |
| cpi->gld_fb_idx = 2; |
| cpi->alt_fb_idx = 6; |
| } else if (svc->spatial_layer_id == 1) { |
| cpi->lst_fb_idx = 1; |
| cpi->gld_fb_idx = 3; |
| cpi->alt_fb_idx = 6; |
| } |
| } else if (svc->number_spatial_layers == 3) { |
| if (svc->spatial_layer_id == 0) { |
| cpi->lst_fb_idx = 0; |
| cpi->gld_fb_idx = 3; |
| cpi->alt_fb_idx = 6; |
| } else if (svc->spatial_layer_id == 1) { |
| cpi->lst_fb_idx = 1; |
| cpi->gld_fb_idx = 4; |
| cpi->alt_fb_idx = 6; |
| } else if (svc->spatial_layer_id == 2) { |
| cpi->lst_fb_idx = 2; |
| cpi->gld_fb_idx = 5; |
| cpi->alt_fb_idx = 7; |
| } |
| } |
| cpi->ext_refresh_last_frame = 1; |
| cpi->ext_refresh_golden_frame = 1; |
| cpi->ext_refresh_alt_ref_frame = 1; |
| } |
| } |
| |
| // Check if superframe contains a sync layer request. |
| vp9_svc_check_spatial_layer_sync(cpi); |
| |
| // If long term termporal feature is enabled, set the period of the update. |
| // The update/refresh of this reference frame is always on base temporal |
| // layer frame. |
| if (svc->use_gf_temporal_ref_current_layer) { |
| // Only use gf long-term prediction on non-key superframes. |
| if (!svc->layer_context[svc->temporal_layer_id].is_key_frame) { |
| // Use golden for this reference, which will be used for prediction. |
| int index = svc->spatial_layer_id; |
| if (svc->number_spatial_layers == 3) index = svc->spatial_layer_id - 1; |
| assert(index >= 0); |
| cpi->gld_fb_idx = svc->buffer_gf_temporal_ref[index].idx; |
| // Enable prediction off LAST (last reference) and golden (which will |
| // generally be further behind/long-term reference). |
| cpi->ref_frame_flags = VP9_LAST_FLAG | VP9_GOLD_FLAG; |
| } |
| // Check for update/refresh of reference: only refresh on base temporal |
| // layer. |
| if (svc->temporal_layer_id == 0) { |
| if (svc->layer_context[svc->temporal_layer_id].is_key_frame) { |
| // On key frame we update the buffer index used for long term reference. |
| // Use the alt_ref since it is not used or updated on key frames. |
| int index = svc->spatial_layer_id; |
| if (svc->number_spatial_layers == 3) index = svc->spatial_layer_id - 1; |
| assert(index >= 0); |
| cpi->alt_fb_idx = svc->buffer_gf_temporal_ref[index].idx; |
| cpi->ext_refresh_alt_ref_frame = 1; |
| } else if (rc->frames_till_gf_update_due == 0) { |
| // Set perdiod of next update. Make it a multiple of 10, as the cyclic |
| // refresh is typically ~10%, and we'd like the update to happen after |
| // a few cylces of the refresh (so it better quality frame). Note the |
| // cyclic refresh for SVC only operates on base temporal layer frames. |
| // Choose 20 as perdiod for now (2 cycles). |
| rc->baseline_gf_interval = 20; |
| rc->frames_till_gf_update_due = rc->baseline_gf_interval; |
| cpi->ext_refresh_golden_frame = 1; |
| rc->gfu_boost = DEFAULT_GF_BOOST; |
| } |
| } |
| } else if (!svc->use_gf_temporal_ref) { |
| rc->frames_till_gf_update_due = INT_MAX; |
| rc->baseline_gf_interval = INT_MAX; |
| } |
| if (svc->set_intra_only_frame) { |
| set_intra_only_frame(cpi); |
| target = vp9_calc_iframe_target_size_one_pass_cbr(cpi); |
| } |
| // Any update/change of global cyclic refresh parameters (amount/delta-qp) |
| // should be done here, before the frame qp is selected. |
| if (cpi->oxcf.aq_mode == CYCLIC_REFRESH_AQ) |
| vp9_cyclic_refresh_update_parameters(cpi); |
| |
| vp9_rc_set_frame_target(cpi, target); |
| if (cm->show_frame) update_buffer_level_svc_preencode(cpi); |
| |
| if (cpi->oxcf.resize_mode == RESIZE_DYNAMIC && svc->single_layer_svc == 1 && |
| svc->spatial_layer_id == svc->first_spatial_layer_to_encode && |
| svc->temporal_layer_id == 0) { |
| LAYER_CONTEXT *lc = NULL; |
| cpi->resize_pending = vp9_resize_one_pass_cbr(cpi); |
| if (cpi->resize_pending) { |
| int tl, width, height; |
| // Apply the same scale to all temporal layers. |
| for (tl = 0; tl < svc->number_temporal_layers; tl++) { |
| lc = &svc->layer_context[svc->spatial_layer_id * |
| svc->number_temporal_layers + |
| tl]; |
| lc->scaling_factor_num_resize = |
| cpi->resize_scale_num * lc->scaling_factor_num; |
| lc->scaling_factor_den_resize = |
| cpi->resize_scale_den * lc->scaling_factor_den; |
| // Reset rate control for all temporal layers. |
| lc->rc.buffer_level = lc->rc.optimal_buffer_level; |
| lc->rc.bits_off_target = lc->rc.optimal_buffer_level; |
| lc->rc.rate_correction_factors[INTER_FRAME] = |
| rc->rate_correction_factors[INTER_FRAME]; |
| } |
| // Set the size for this current temporal layer. |
| lc = &svc->layer_context[svc->spatial_layer_id * |
| svc->number_temporal_layers + |
| svc->temporal_layer_id]; |
| get_layer_resolution(cpi->oxcf.width, cpi->oxcf.height, |
| lc->scaling_factor_num_resize, |
| lc->scaling_factor_den_resize, &width, &height); |
| vp9_set_size_literal(cpi, width, height); |
| svc->resize_set = 1; |
| } |
| } else { |
| cpi->resize_pending = 0; |
| svc->resize_set = 0; |
| } |
| } |
| |
| void vp9_rc_get_one_pass_cbr_params(VP9_COMP *cpi) { |
| VP9_COMMON *const cm = &cpi->common; |
| RATE_CONTROL *const rc = &cpi->rc; |
| int target; |
| if ((cm->current_video_frame == 0) || (cpi->frame_flags & FRAMEFLAGS_KEY) || |
| (cpi->oxcf.auto_key && rc->frames_to_key == 0)) { |
| cm->frame_type = KEY_FRAME; |
| rc->frames_to_key = cpi->oxcf.key_freq; |
| rc->kf_boost = DEFAULT_KF_BOOST; |
| rc->source_alt_ref_active = 0; |
| } else { |
| cm->frame_type = INTER_FRAME; |
| } |
| if (rc->frames_till_gf_update_due == 0) { |
| if (cpi->oxcf.aq_mode == CYCLIC_REFRESH_AQ) |
| vp9_cyclic_refresh_set_golden_update(cpi); |
| else |
| rc->baseline_gf_interval = |
| (rc->min_gf_interval + rc->max_gf_interval) / 2; |
| rc->frames_till_gf_update_due = rc->baseline_gf_interval; |
| // NOTE: frames_till_gf_update_due must be <= frames_to_key. |
| if (rc->frames_till_gf_update_due > rc->frames_to_key) |
| rc->frames_till_gf_update_due = rc->frames_to_key; |
| cpi->refresh_golden_frame = 1; |
| rc->gfu_boost = DEFAULT_GF_BOOST; |
| } |
| |
| // Any update/change of global cyclic refresh parameters (amount/delta-qp) |
| // should be done here, before the frame qp is selected. |
| if (cpi->oxcf.aq_mode == CYCLIC_REFRESH_AQ) |
| vp9_cyclic_refresh_update_parameters(cpi); |
| |
| if (frame_is_intra_only(cm)) |
| target = vp9_calc_iframe_target_size_one_pass_cbr(cpi); |
| else |
| target = vp9_calc_pframe_target_size_one_pass_cbr(cpi); |
| |
| vp9_rc_set_frame_target(cpi, target); |
| |
| if (cm->show_frame) vp9_update_buffer_level_preencode(cpi); |
| |
| if (cpi->oxcf.resize_mode == RESIZE_DYNAMIC) |
| cpi->resize_pending = vp9_resize_one_pass_cbr(cpi); |
| else |
| cpi->resize_pending = 0; |
| } |
| |
| int vp9_compute_qdelta(const RATE_CONTROL *rc, double qstart, double qtarget, |
| vpx_bit_depth_t bit_depth) { |
| int start_index = rc->worst_quality; |
| int target_index = rc->worst_quality; |
| int i; |
| |
| // Convert the average q value to an index. |
| for (i = rc->best_quality; i < rc->worst_quality; ++i) { |
| start_index = i; |
| if (vp9_convert_qindex_to_q(i, bit_depth) >= qstart) break; |
| } |
| |
| // Convert the q target to an index |
| for (i = rc->best_quality; i < rc->worst_quality; ++i) { |
| target_index = i; |
| if (vp9_convert_qindex_to_q(i, bit_depth) >= qtarget) break; |
| } |
| |
| return target_index - start_index; |
| } |
| |
| int vp9_compute_qdelta_by_rate(const RATE_CONTROL *rc, FRAME_TYPE frame_type, |
| int qindex, double rate_target_ratio, |
| vpx_bit_depth_t bit_depth) { |
| int target_index = rc->worst_quality; |
| int i; |
| |
| // Look up the current projected bits per block for the base index |
| const int base_bits_per_mb = |
| vp9_rc_bits_per_mb(frame_type, qindex, 1.0, bit_depth); |
| |
| // Find the target bits per mb based on the base value and given ratio. |
| const int target_bits_per_mb = (int)(rate_target_ratio * base_bits_per_mb); |
| |
| // Convert the q target to an index |
| for (i = rc->best_quality; i < rc->worst_quality; ++i) { |
| if (vp9_rc_bits_per_mb(frame_type, i, 1.0, bit_depth) <= |
| target_bits_per_mb) { |
| target_index = i; |
| break; |
| } |
| } |
| return target_index - qindex; |
| } |
| |
| void vp9_rc_set_gf_interval_range(const VP9_COMP *const cpi, |
| RATE_CONTROL *const rc) { |
| const VP9EncoderConfig *const oxcf = &cpi->oxcf; |
| |
| // Special case code for 1 pass fixed Q mode tests |
| if ((oxcf->pass == 0) && (oxcf->rc_mode == VPX_Q)) { |
| rc->max_gf_interval = FIXED_GF_INTERVAL; |
| rc->min_gf_interval = FIXED_GF_INTERVAL; |
| rc->static_scene_max_gf_interval = FIXED_GF_INTERVAL; |
| } else { |
| // Set Maximum gf/arf interval |
| rc->max_gf_interval = oxcf->max_gf_interval; |
| rc->min_gf_interval = oxcf->min_gf_interval; |
| #if CONFIG_RATE_CTRL |
| if (rc->min_gf_interval == 0) { |
| rc->min_gf_interval = vp9_rc_get_default_min_gf_interval( |
| oxcf->width, oxcf->height, oxcf->init_framerate); |
| } |
| if (rc->max_gf_interval == 0) { |
| rc->max_gf_interval = vp9_rc_get_default_max_gf_interval( |
| oxcf->init_framerate, rc->min_gf_interval); |
| } |
| #else |
| if (rc->min_gf_interval == 0) |
| rc->min_gf_interval = vp9_rc_get_default_min_gf_interval( |
| oxcf->width, oxcf->height, cpi->framerate); |
| if (rc->max_gf_interval == 0) |
| rc->max_gf_interval = vp9_rc_get_default_max_gf_interval( |
| cpi->framerate, rc->min_gf_interval); |
| #endif |
| |
| // Extended max interval for genuinely static scenes like slide shows. |
| rc->static_scene_max_gf_interval = MAX_STATIC_GF_GROUP_LENGTH; |
| |
| if (rc->max_gf_interval > rc->static_scene_max_gf_interval) |
| rc->max_gf_interval = rc->static_scene_max_gf_interval; |
| |
| // Clamp min to max |
| rc->min_gf_interval = VPXMIN(rc->min_gf_interval, rc->max_gf_interval); |
| |
| if (oxcf->target_level == LEVEL_AUTO) { |
| const uint32_t pic_size = cpi->common.width * cpi->common.height; |
| const uint32_t pic_breadth = |
| VPXMAX(cpi->common.width, cpi->common.height); |
| int i; |
| for (i = LEVEL_1; i < LEVEL_MAX; ++i) { |
| if (vp9_level_defs[i].max_luma_picture_size >= pic_size && |
| vp9_level_defs[i].max_luma_picture_breadth >= pic_breadth) { |
| if (rc->min_gf_interval <= |
| (int)vp9_level_defs[i].min_altref_distance) { |
| rc->min_gf_interval = |
| (int)vp9_level_defs[i].min_altref_distance + 1; |
| rc->max_gf_interval = |
| VPXMAX(rc->max_gf_interval, rc->min_gf_interval); |
| } |
| break; |
| } |
| } |
| } |
| } |
| } |
| |
| void vp9_rc_update_framerate(VP9_COMP *cpi) { |
| const |