cpi->rc.frames_to_key = cpi->key_frame_frequency;
cpi->rc.kf_boost = KEY_FRAME_BOOST;
cpi->rc.source_alt_ref_active = 0;
+ cpi->rc.per_frame_bandwidth = cpi->rc.av_per_frame_bandwidth * 8;
+ if (cm->current_video_frame == 0) {
+ cpi->rc.active_worst_quality = cpi->rc.worst_quality;
+ } else {
+ // Choose active worst quality twice as large as the last q.
+ cpi->rc.active_worst_quality = cpi->rc.last_q[KEY_FRAME] * 2;
+ if (cpi->rc.active_worst_quality > cpi->rc.worst_quality)
+ cpi->rc.active_worst_quality = cpi->rc.worst_quality;
+ }
} else {
cm->frame_type = INTER_FRAME;
+ cpi->rc.per_frame_bandwidth = cpi->rc.av_per_frame_bandwidth;
+ if (cm->current_video_frame == 1) {
+ cpi->rc.active_worst_quality = cpi->rc.worst_quality;
+ } else {
+ // Choose active worst quality twice as large as the last q.
+ cpi->rc.active_worst_quality = cpi->rc.last_q[INTER_FRAME] * 2;
+ if (cpi->rc.active_worst_quality > cpi->rc.worst_quality)
+ cpi->rc.active_worst_quality = cpi->rc.worst_quality;
+ }
}
if (cpi->rc.frames_till_gf_update_due == 0) {
cpi->rc.baseline_gf_interval = DEFAULT_GF_INTERVAL;
cpi->rc.frames_till_gf_update_due = cpi->rc.frames_to_key;
cpi->refresh_golden_frame = 1;
cpi->rc.source_alt_ref_pending = USE_ALTREF_FOR_ONE_PASS;
- cpi->rc.gfu_boost = 1000;
+ cpi->rc.gfu_boost = 2000;
+ }
+}
+
+// Adjust active_worst_quality level based on buffer level.
+static int calc_active_worst_quality_from_buffer_level(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_CONFIG *oxcf = &cpi->oxcf;
+ const RATE_CONTROL *rc = &cpi->rc;
+ int active_worst_quality = rc->active_worst_quality;
+ // Maximum limit for down adjustment, ~20%.
+ int max_adjustment_down = active_worst_quality / 5;
+ // Buffer level below which we push active_worst to worst_quality.
+ int critical_level = oxcf->optimal_buffer_level >> 2;
+ int adjustment = 0;
+ int buff_lvl_step = 0;
+ if (rc->buffer_level > oxcf->optimal_buffer_level) {
+ // Adjust down.
+ if (max_adjustment_down) {
+ buff_lvl_step = (int)((oxcf->maximum_buffer_size -
+ oxcf->optimal_buffer_level) / max_adjustment_down);
+ if (buff_lvl_step)
+ adjustment = (int)((rc->buffer_level - oxcf->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 = (oxcf->optimal_buffer_level - critical_level);
+ if (buff_lvl_step) {
+ adjustment = (rc->worst_quality - rc->avg_frame_qindex[INTER_FRAME]) *
+ (oxcf->optimal_buffer_level - rc->buffer_level) /
+ buff_lvl_step;
+ }
+ active_worst_quality = rc->avg_frame_qindex[INTER_FRAME] + adjustment;
+ }
+ } else {
+ // Set to worst_quality if buffer is below critical level.
+ active_worst_quality = rc->worst_quality;
+ }
+ return active_worst_quality;
+}
+
+static int calc_pframe_target_size_one_pass_cbr(const VP9_COMP *cpi) {
+ const VP9_CONFIG *oxcf = &cpi->oxcf;
+ const RATE_CONTROL *rc = &cpi->rc;
+ int target = rc->av_per_frame_bandwidth;
+ const int64_t diff = oxcf->optimal_buffer_level - rc->buffer_level;
+ const int one_pct_bits = 1 + oxcf->optimal_buffer_level / 100;
+ if (diff > 0) {
+ // Lower the target bandwidth for this frame.
+ const int pct_low = MIN(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 = MIN(-diff / one_pct_bits, oxcf->over_shoot_pct);
+ target += (target * pct_high) / 200;
+ }
+ return target;
+}
+
+static int calc_iframe_target_size_one_pass_cbr(const VP9_COMP *cpi) {
+ int per_frame_bandwidth;
+ const RATE_CONTROL *rc = &cpi->rc;
+ if (cpi->common.current_video_frame == 0) {
+ per_frame_bandwidth = cpi->oxcf.starting_buffer_level / 2;
+ } else {
+ int initial_boost = 32;
+ int kf_boost = MAX(initial_boost, (int)(2 * cpi->output_framerate - 16));
+ if (rc->frames_since_key < cpi->output_framerate / 2) {
+ kf_boost = (int)(kf_boost * rc->frames_since_key /
+ (cpi->output_framerate / 2));
+ }
+ per_frame_bandwidth =
+ ((16 + kf_boost) * rc->av_per_frame_bandwidth) >> 4;
}
+ return per_frame_bandwidth;
}
void vp9_get_one_pass_cbr_params(VP9_COMP *cpi) {
cpi->rc.frames_to_key = cpi->key_frame_frequency;
cpi->rc.kf_boost = KEY_FRAME_BOOST;
cpi->rc.source_alt_ref_active = 0;
+ cpi->rc.per_frame_bandwidth = calc_iframe_target_size_one_pass_cbr(cpi);
+ cpi->rc.active_worst_quality = cpi->rc.worst_quality;
} else {
cm->frame_type = INTER_FRAME;
+ cpi->rc.per_frame_bandwidth = calc_pframe_target_size_one_pass_cbr(cpi);
+ cpi->rc.active_worst_quality =
+ calc_active_worst_quality_from_buffer_level(cpi);
}
// Don't use gf_update by default in CBR mode.
cpi->rc.frames_till_gf_update_due = INT_MAX;
static void calc_iframe_target_size(VP9_COMP *cpi) {
const VP9_CONFIG *oxcf = &cpi->oxcf;
RATE_CONTROL *const rc = &cpi->rc;
- int target;
+ int target = rc->per_frame_bandwidth;
vp9_clear_system_state(); // __asm emms;
- // For 1-pass.
- if (cpi->pass == 0 && oxcf->end_usage == USAGE_STREAM_FROM_SERVER) {
- if (cpi->common.current_video_frame == 0) {
- target = oxcf->starting_buffer_level / 2;
- } else {
- // TODO(marpan): Add in adjustment based on Q.
- // If this keyframe was forced, use a more recent Q estimate.
- // int Q = (cpi->common.frame_flags & FRAMEFLAGS_KEY) ?
- // cpi->rc.avg_frame_qindex : cpi->rc.ni_av_qi;
- int initial_boost = 32;
- // Boost depends somewhat on frame rate.
- int kf_boost = MAX(initial_boost, (int)(2 * cpi->output_framerate - 16));
- // Adjustment up based on q: need to fix.
- // kf_boost = kf_boost * kfboost_qadjust(Q) / 100;
- // Frame separation adjustment (down).
- if (rc->frames_since_key < cpi->output_framerate / 2) {
- kf_boost = (int)(kf_boost * rc->frames_since_key /
- (cpi->output_framerate / 2));
- }
- kf_boost = (kf_boost < 16) ? 16 : kf_boost;
- target = ((16 + kf_boost) * rc->per_frame_bandwidth) >> 4;
- }
- rc->active_worst_quality = rc->worst_quality;
- } else {
- target = rc->per_frame_bandwidth;
- }
-
if (oxcf->rc_max_intra_bitrate_pct) {
const int max_rate = rc->per_frame_bandwidth *
oxcf->rc_max_intra_bitrate_pct / 100;
}
}
-// Adjust active_worst_quality level based on buffer level.
-static int adjust_active_worst_quality_from_buffer_level(const VP9_CONFIG *oxcf,
- const RATE_CONTROL *rc) {
- // Adjust active_worst_quality: If buffer is above the optimal/target level,
- // bring active_worst_quality down depending on fullness over 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).
-
- int active_worst_quality = rc->active_worst_quality;
- // Maximum limit for down adjustment, ~20%.
- int max_adjustment_down = active_worst_quality / 5;
- // Buffer level below which we push active_worst to worst_quality.
- int critical_level = oxcf->optimal_buffer_level >> 2;
- int adjustment = 0;
- int buff_lvl_step = 0;
- if (rc->buffer_level > oxcf->optimal_buffer_level) {
- // Adjust down.
- if (max_adjustment_down) {
- buff_lvl_step = (int)((oxcf->maximum_buffer_size -
- oxcf->optimal_buffer_level) / max_adjustment_down);
- if (buff_lvl_step)
- adjustment = (int)((rc->buffer_level - oxcf->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 = (oxcf->optimal_buffer_level - critical_level);
- if (buff_lvl_step) {
- adjustment = (rc->worst_quality - rc->avg_frame_qindex[INTER_FRAME]) *
- (oxcf->optimal_buffer_level - rc->buffer_level) /
- buff_lvl_step;
- }
- active_worst_quality = rc->avg_frame_qindex[INTER_FRAME] + adjustment;
- }
- } else {
- // Set to worst_quality if buffer is below critical level.
- active_worst_quality = rc->worst_quality;
- }
- return active_worst_quality;
-}
-
-// Adjust target frame size with respect to the buffering constraints:
-static int target_size_from_buffer_level(const VP9_CONFIG *oxcf,
- const RATE_CONTROL *rc) {
- int target = rc->this_frame_target;
- const int64_t diff = oxcf->optimal_buffer_level - rc->buffer_level;
- const int one_pct_bits = 1 + oxcf->optimal_buffer_level / 100;
-
- if (diff > 0) {
- // Lower the target bandwidth for this frame.
- const int pct_low = MIN(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 = MIN(-diff / one_pct_bits, oxcf->over_shoot_pct);
- target += (target * pct_high) / 200;
- }
-
- return target;
-}
-
static void calc_pframe_target_size(VP9_COMP *const cpi) {
RATE_CONTROL *const rc = &cpi->rc;
const VP9_CONFIG *const oxcf = &cpi->oxcf;
// For now, use: cpi->rc.av_per_frame_bandwidth / 16:
min_frame_target = MAX(rc->av_per_frame_bandwidth >> 4,
FRAME_OVERHEAD_BITS);
- rc->this_frame_target = target_size_from_buffer_level(oxcf, rc);
- // Adjust qp-max based on buffer level.
- rc->active_worst_quality =
- adjust_active_worst_quality_from_buffer_level(oxcf, rc);
-
if (rc->this_frame_target < min_frame_target)
rc->this_frame_target = min_frame_target;
return;
projected_size_based_on_q = estimate_bits_at_q(cpi->common.frame_type, q,
cpi->common.MBs,
rate_correction_factor);
-
// Work out a size correction factor.
if (projected_size_based_on_q > 0)
correction_factor = (100 * cpi->rc.projected_frame_size) /
}
}
-int vp9_rc_pick_q_and_adjust_q_bounds(const VP9_COMP *cpi,
- int *bottom_index, int *top_index) {
+static int rc_pick_q_and_adjust_q_bounds_one_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;
const VP9_CONFIG *const oxcf = &cpi->oxcf;
int delta_qindex = vp9_compute_qdelta(cpi, last_boosted_q,
(last_boosted_q * 0.75));
active_best_quality = MAX(qindex + delta_qindex, rc->best_quality);
- } else if (!(cpi->pass == 0 && cm->current_video_frame == 0)) {
+ } 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;
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);
#endif
} 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 (oxcf->end_usage == USAGE_CONSTANT_QUALITY) {
active_best_quality = cpi->cq_target_quality;
} else {
- if (cpi->pass == 0 &&
- rc->avg_frame_qindex[INTER_FRAME] < active_worst_quality)
- // 1-pass: for now, use the average Q for the active_best, if its lower
- // than active_worst.
- active_best_quality = inter_minq[rc->avg_frame_qindex[INTER_FRAME]];
- else
- active_best_quality = inter_minq[active_worst_quality];
-
+ active_best_quality = inter_minq[rc->avg_frame_qindex[INTER_FRAME]];
// For the constrained quality mode we don't want
// q to fall below the cq level.
if ((oxcf->end_usage == USAGE_CONSTRAINED_QUALITY) &&
#if LIMIT_QRANGE_FOR_ALTREF_AND_KEY
// Limit Q range for the adaptive loop.
if (cm->frame_type == KEY_FRAME && !rc->this_key_frame_forced) {
- if (!(cpi->pass == 0 && cm->current_video_frame == 0))
+ if (!(cm->current_video_frame == 0))
*top_index = (active_worst_quality + active_best_quality * 3) / 4;
} else if (!rc->is_src_frame_alt_ref &&
(oxcf->end_usage != USAGE_STREAM_FROM_SERVER) &&
return q;
}
+static int rc_pick_q_and_adjust_q_bounds_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;
+ const VP9_CONFIG *const oxcf = &cpi->oxcf;
+ int active_best_quality;
+ int active_worst_quality = rc->active_worst_quality;
+ int q;
+
+ if (frame_is_intra_only(cm)) {
+ active_best_quality = rc->best_quality;
+#if !CONFIG_MULTIPLE_ARF
+ // Handle the special case for key frames forced when we have75 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);
+ int delta_qindex = vp9_compute_qdelta(cpi, last_boosted_q,
+ (last_boosted_q * 0.75));
+ active_best_quality = MAX(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_active_quality(active_worst_quality,
+ rc->kf_boost,
+ kf_low, kf_high,
+ kf_low_motion_minq,
+ kf_high_motion_minq);
+
+ // 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);
+ active_best_quality += vp9_compute_qdelta(cpi, q_val, q_val *
+ q_adj_factor);
+ }
+#else
+ double current_q;
+ // Force the KF quantizer to be 30% of the active_worst_quality.
+ current_q = vp9_convert_qindex_to_q(active_worst_quality);
+ active_best_quality = active_worst_quality
+ + vp9_compute_qdelta(cpi, current_q, current_q * 0.3);
+#endif
+ } 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 &&
+ 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->end_usage == USAGE_CONSTRAINED_QUALITY) {
+ if (q < cpi->cq_target_quality)
+ q = cpi->cq_target_quality;
+ if (rc->frames_since_key > 1) {
+ active_best_quality = get_active_quality(q, rc->gfu_boost,
+ gf_low, gf_high,
+ afq_low_motion_minq,
+ afq_high_motion_minq);
+ } else {
+ active_best_quality = get_active_quality(q, rc->gfu_boost,
+ gf_low, gf_high,
+ gf_low_motion_minq,
+ gf_high_motion_minq);
+ }
+ // Constrained quality use slightly lower active best.
+ active_best_quality = active_best_quality * 15 / 16;
+
+ } else if (oxcf->end_usage == USAGE_CONSTANT_QUALITY) {
+ if (!cpi->refresh_alt_ref_frame) {
+ active_best_quality = cpi->cq_target_quality;
+ } else {
+ if (rc->frames_since_key > 1) {
+ active_best_quality = get_active_quality(
+ q, rc->gfu_boost, gf_low, gf_high,
+ afq_low_motion_minq, afq_high_motion_minq);
+ } else {
+ active_best_quality = get_active_quality(
+ q, rc->gfu_boost, gf_low, gf_high,
+ gf_low_motion_minq, gf_high_motion_minq);
+ }
+ }
+ } else {
+ active_best_quality = get_active_quality(
+ q, rc->gfu_boost, gf_low, gf_high,
+ gf_low_motion_minq, gf_high_motion_minq);
+ }
+ } else {
+ if (oxcf->end_usage == USAGE_CONSTANT_QUALITY) {
+ active_best_quality = cpi->cq_target_quality;
+ } 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->end_usage == USAGE_CONSTRAINED_QUALITY) &&
+ (active_best_quality < cpi->cq_target_quality)) {
+ // If we are strongly undershooting the target rate in the last
+ // frames then use the user passed in cq value not the auto
+ // cq value.
+ if (rc->rolling_actual_bits < rc->min_frame_bandwidth)
+ active_best_quality = oxcf->cq_level;
+ else
+ active_best_quality = cpi->cq_target_quality;
+ }
+ }
+ }
+
+ // Clip the active best and worst quality values to limits.
+ if (active_worst_quality > rc->worst_quality)
+ active_worst_quality = rc->worst_quality;
+
+ if (active_best_quality < rc->best_quality)
+ active_best_quality = rc->best_quality;
+
+ if (active_best_quality > rc->worst_quality)
+ active_best_quality = rc->worst_quality;
+
+ if (active_worst_quality < active_best_quality)
+ active_worst_quality = active_best_quality;
+
+ *top_index = active_worst_quality;
+ *bottom_index = active_best_quality;
+
+#if LIMIT_QRANGE_FOR_ALTREF_AND_KEY
+ // Limit Q range for the adaptive loop.
+ if (cm->frame_type == KEY_FRAME && !rc->this_key_frame_forced) {
+ *top_index = (active_worst_quality + active_best_quality * 3) / 4;
+ } else if (!rc->is_src_frame_alt_ref &&
+ (oxcf->end_usage != USAGE_STREAM_FROM_SERVER) &&
+ (cpi->refresh_golden_frame || cpi->refresh_alt_ref_frame)) {
+ *top_index = (active_worst_quality + active_best_quality) / 2;
+ }
+#endif
+
+ if (oxcf->end_usage == USAGE_CONSTANT_QUALITY) {
+ 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 (cpi->rc.this_frame_target >= cpi->rc.max_frame_bandwidth)
+ *top_index = q;
+ else
+ q = *top_index;
+ }
+ }
+#if CONFIG_MULTIPLE_ARF
+ // Force the quantizer determined by the coding order pattern.
+ if (cpi->multi_arf_enabled && (cm->frame_type != KEY_FRAME) &&
+ cpi->oxcf.end_usage != USAGE_CONSTANT_QUALITY) {
+ double new_q;
+ double current_q = vp9_convert_qindex_to_q(active_worst_quality);
+ int level = cpi->this_frame_weight;
+ assert(level >= 0);
+ new_q = current_q * (1.0 - (0.2 * (cpi->max_arf_level - level)));
+ q = active_worst_quality +
+ vp9_compute_qdelta(cpi, current_q, new_q);
+
+ *bottom_index = q;
+ *top_index = q;
+ printf("frame:%d q:%d\n", cm->current_video_frame, q);
+ }
+#endif
+ 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_adjust_q_bounds(const VP9_COMP *cpi,
+ int *bottom_index,
+ int *top_index) {
+ if (cpi->pass == 0)
+ return rc_pick_q_and_adjust_q_bounds_one_pass(
+ cpi, bottom_index, top_index);
+ else
+ return rc_pick_q_and_adjust_q_bounds_two_pass(
+ cpi, bottom_index, top_index);
+}
+
void vp9_rc_compute_frame_size_bounds(const VP9_COMP *cpi,
int this_frame_target,
int *frame_under_shoot_limit,
projects / platform / upstream / libvpx.git / commitdiff