ref: 0865e0d532cd2a5877687d475333ea8cbfb5857c
parent: 4f8a30b116890f36fb83cbbe20c095e9ebdafccf
author: Dmitry Kovalev <dkovalev@google.com>
date: Wed Feb 5 12:54:17 EST 2014
Cleaning up vp9_ratectl.c. Change-Id: I13738ef1f307cc5f563126bc7a92beaa01fde3bd
--- a/vp9/encoder/vp9_ratectrl.c
+++ b/vp9/encoder/vp9_ratectrl.c
@@ -1081,46 +1081,45 @@
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 ||
cm->frame_flags & FRAMEFLAGS_KEY ||
- cpi->rc.frames_to_key == 0 ||
+ rc->frames_to_key == 0 ||
(cpi->oxcf.auto_key && test_for_kf_one_pass(cpi)))) {cm->frame_type = KEY_FRAME;
- cpi->rc.this_key_frame_forced = cm->current_video_frame != 0 &&
- cpi->rc.frames_to_key == 0;
- cpi->rc.frames_to_key = cpi->key_frame_frequency;
- cpi->rc.kf_boost = DEFAULT_KF_BOOST;
- cpi->rc.source_alt_ref_active = 0;
+ rc->this_key_frame_forced = cm->current_video_frame != 0 &&
+ rc->frames_to_key == 0;
+ rc->frames_to_key = cpi->key_frame_frequency;
+ rc->kf_boost = DEFAULT_KF_BOOST;
+ rc->source_alt_ref_active = 0;
if (cm->current_video_frame == 0) {- cpi->rc.active_worst_quality = cpi->rc.worst_quality;
+ rc->active_worst_quality = 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;
+ rc->active_worst_quality = MIN(rc->worst_quality,
+ rc->last_q[KEY_FRAME] * 2);
}
} else {cm->frame_type = INTER_FRAME;
if (cm->current_video_frame == 1) {- cpi->rc.active_worst_quality = cpi->rc.worst_quality;
+ rc->active_worst_quality = 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;
+ rc->active_worst_quality = MIN(rc->worst_quality,
+ rc->last_q[INTER_FRAME] * 2);
}
}
- 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.baseline_gf_interval;
+ if (rc->frames_till_gf_update_due == 0) {+ rc->baseline_gf_interval = DEFAULT_GF_INTERVAL;
+ rc->frames_till_gf_update_due = rc->baseline_gf_interval;
// NOTE: frames_till_gf_update_due must be <= frames_to_key.
- if (cpi->rc.frames_till_gf_update_due > cpi->rc.frames_to_key)
- cpi->rc.frames_till_gf_update_due = cpi->rc.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;
- cpi->rc.source_alt_ref_pending = USE_ALTREF_FOR_ONE_PASS;
- cpi->rc.gfu_boost = DEFAULT_GF_BOOST;
+ rc->source_alt_ref_pending = USE_ALTREF_FOR_ONE_PASS;
+ rc->gfu_boost = DEFAULT_GF_BOOST;
}
if (cm->frame_type == KEY_FRAME)
target = calc_iframe_target_size_one_pass_vbr(cpi);
@@ -1190,26 +1189,23 @@
const int pct_high = MIN(-diff / one_pct_bits, oxcf->over_shoot_pct);
target += (target * pct_high) / 200;
}
- if (target < min_frame_target)
- target = min_frame_target;
- return target;
+ return MAX(min_frame_target, target);
}
static int calc_iframe_target_size_one_pass_cbr(const VP9_COMP *cpi) {- int target;
const RATE_CONTROL *rc = &cpi->rc;
+
if (cpi->common.current_video_frame == 0) {- target = cpi->oxcf.starting_buffer_level / 2;
+ return cpi->oxcf.starting_buffer_level / 2;
} else {- int initial_boost = 32;
+ const 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));
}
- target = ((16 + kf_boost) * rc->av_per_frame_bandwidth) >> 4;
+ return ((16 + kf_boost) * rc->av_per_frame_bandwidth) >> 4;
}
- return target;
}
void vp9_rc_get_svc_params(VP9_COMP *cpi) {@@ -1240,27 +1236,27 @@
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 ||
cm->frame_flags & FRAMEFLAGS_KEY ||
- cpi->rc.frames_to_key == 0 ||
+ rc->frames_to_key == 0 ||
(cpi->oxcf.auto_key && test_for_kf_one_pass(cpi)))) {cm->frame_type = KEY_FRAME;
- cpi->rc.this_key_frame_forced = cm->current_video_frame != 0 &&
- cpi->rc.frames_to_key == 0;
- cpi->rc.frames_to_key = cpi->key_frame_frequency;
- cpi->rc.kf_boost = DEFAULT_KF_BOOST;
- cpi->rc.source_alt_ref_active = 0;
+ rc->this_key_frame_forced = cm->current_video_frame != 0 &&
+ rc->frames_to_key == 0;
+ rc->frames_to_key = cpi->key_frame_frequency;
+ rc->kf_boost = DEFAULT_KF_BOOST;
+ rc->source_alt_ref_active = 0;
target = calc_iframe_target_size_one_pass_cbr(cpi);
- cpi->rc.active_worst_quality = cpi->rc.worst_quality;
+ rc->active_worst_quality = rc->worst_quality;
} else {cm->frame_type = INTER_FRAME;
target = calc_pframe_target_size_one_pass_cbr(cpi);
- cpi->rc.active_worst_quality =
- calc_active_worst_quality_one_pass_cbr(cpi);
+ rc->active_worst_quality = calc_active_worst_quality_one_pass_cbr(cpi);
}
vp9_rc_set_frame_target(cpi, target);
// Don't use gf_update by default in CBR mode.
- cpi->rc.frames_till_gf_update_due = INT_MAX;
- cpi->rc.baseline_gf_interval = INT_MAX;
+ rc->frames_till_gf_update_due = INT_MAX;
+ rc->baseline_gf_interval = INT_MAX;
}