rc->source_alt_ref_pending = 0;
}
+#define LAST_ALR_ACTIVE_BEST_QUALITY_ADJUSTMENT_FACTOR 0.2
+ rc->arf_active_best_quality_adjustment_factor = 1.0;
+ if (rc->source_alt_ref_pending && !is_lossless_requested(&cpi->oxcf) &&
+ rc->frames_to_key <= rc->arf_active_best_quality_adjustment_window) {
+ rc->arf_active_best_quality_adjustment_factor =
+ LAST_ALR_ACTIVE_BEST_QUALITY_ADJUSTMENT_FACTOR +
+ (1.0 - LAST_ALR_ACTIVE_BEST_QUALITY_ADJUSTMENT_FACTOR) *
+ (rc->frames_to_key - i) /
+ VPXMAX(1, (rc->arf_active_best_quality_adjustment_window - i));
+ }
+
#ifdef AGGRESSIVE_VBR
// Limit maximum boost based on interval length.
rc->gfu_boost = VPXMIN((int)rc->gfu_boost, i * 140);
// Default to normal-sized frame on keyframes.
cpi->rc.next_frame_size_selector = UNSCALED;
}
+#define ARF_ACTIVE_BEST_QUALITY_ADJUSTMENT_WINDOW_SIZE 64
+ // TODO(ravi.chaudhary@ittiam.com): Experiment without the below min
+ // condition. This might be helpful for small key frame intervals.
+ rc->arf_active_best_quality_adjustment_window =
+ VPXMIN(ARF_ACTIVE_BEST_QUALITY_ADJUSTMENT_WINDOW_SIZE, rc->frames_to_key);
}
static int is_skippable_frame(const VP9_COMP *cpi) {
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;
}
static int check_buffer_above_thresh(VP9_COMP *cpi, int drop_mark) {
int active_worst_quality = cpi->twopass.active_worst_quality;
int q;
int *inter_minq;
+ int arf_active_best_quality_adjustment, arf_active_best_quality_max;
+ int *arfgf_high_motion_minq;
const int boost_frame =
!rc->is_src_frame_alt_ref &&
(cpi->refresh_golden_frame || cpi->refresh_alt_ref_frame);
}
active_best_quality = get_gf_active_quality(cpi, q, cm->bit_depth);
+ ASSIGN_MINQ_TABLE(cm->bit_depth, arfgf_high_motion_minq);
+ arf_active_best_quality_max = arfgf_high_motion_minq[q];
+ arf_active_best_quality_adjustment =
+ arf_active_best_quality_max - active_best_quality;
+ active_best_quality = arf_active_best_quality_max -
+ (int)(arf_active_best_quality_adjustment *
+ 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) {
int ext_use_post_encode_drop;
int damped_adjustment[RATE_FACTOR_LEVELS];
+ double arf_active_best_quality_adjustment_factor;
+ int arf_active_best_quality_adjustment_window;
} RATE_CONTROL;
struct VP9_COMP;