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Cleaning up vp9_ratectrl.c.

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Change-Id: I3a260d3ca68db3a9352ae5409de76e56202976e5
This commit is contained in:
Dmitry Kovalev 2014-01-17 17:43:04 -08:00
parent 7e157467dc
commit 6031abeb38
1 changed files with 25 additions and 26 deletions
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51
vp9/encoder/vp9_ratectrl.c
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@ -211,19 +211,16 @@ static int estimate_bits_at_q(int frame_kind, int q, int mbs,
static void calc_iframe_target_size(VP9_COMP *cpi) {
// boost defaults to half second
const VP9_CONFIG *oxcf = &cpi->oxcf;
RATE_CONTROL *const rc = &cpi->rc;
int target;
// Clear down mmx registers to allow floating point in what follows
vp9_clear_system_state(); // __asm emms;
// New Two pass RC
target = cpi->rc.per_frame_bandwidth;
// For 1-pass.
if (cpi->pass == 0) {
if (cpi->common.current_video_frame == 0) {
target = cpi->oxcf.starting_buffer_level / 2;
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.
@ -235,47 +232,49 @@ static void calc_iframe_target_size(VP9_COMP *cpi) {
// Adjustment up based on q: need to fix.
// kf_boost = kf_boost * kfboost_qadjust(Q) / 100;
// Frame separation adjustment (down).
if (cpi->rc.frames_since_key < cpi->output_framerate / 2) {
kf_boost = (int)(kf_boost * cpi->rc.frames_since_key /
(cpi->output_framerate / 2));
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) * cpi->rc.per_frame_bandwidth) >> 4;
target = ((16 + kf_boost) * rc->per_frame_bandwidth) >> 4;
}
cpi->rc.active_worst_quality = cpi->rc.worst_quality;
rc->active_worst_quality = rc->worst_quality;
} else {
target = rc->per_frame_bandwidth;
}
if (cpi->oxcf.rc_max_intra_bitrate_pct) {
int max_rate = cpi->rc.per_frame_bandwidth
* cpi->oxcf.rc_max_intra_bitrate_pct / 100;
if (target > max_rate)
target = max_rate;
if (oxcf->rc_max_intra_bitrate_pct) {
const int max_rate = rc->per_frame_bandwidth *
oxcf->rc_max_intra_bitrate_pct / 100;
target = MIN(target, max_rate);
}
cpi->rc.this_frame_target = target;
rc->this_frame_target = target;
}
// Update the buffer level: leaky bucket model.
void vp9_update_buffer_level(VP9_COMP *const cpi, int encoded_frame_size) {
VP9_COMMON *const cm = &cpi->common;
const VP9_COMMON *const cm = &cpi->common;
const VP9_CONFIG *oxcf = &cpi->oxcf;
RATE_CONTROL *const rc = &cpi->rc;
// Non-viewable frames are a special case and are treated as pure overhead.
if (!cm->show_frame) {
rc->bits_off_target -= encoded_frame_size;
} else {
rc->bits_off_target += rc->av_per_frame_bandwidth - encoded_frame_size;
}
// Clip the buffer level to the maximum specified buffer size.
if (rc->bits_off_target > cpi->oxcf.maximum_buffer_size) {
rc->bits_off_target = cpi->oxcf.maximum_buffer_size;
}
rc->buffer_level = rc->bits_off_target;
rc->buffer_level = MIN(rc->bits_off_target, oxcf->maximum_buffer_size);
}
int vp9_drop_frame(VP9_COMP *const cpi) {
const VP9_CONFIG *oxcf = &cpi->oxcf;
RATE_CONTROL *const rc = &cpi->rc;
if (!cpi->oxcf.drop_frames_water_mark) {
if (!oxcf->drop_frames_water_mark) {
return 0;
} else {
if (rc->buffer_level < 0) {
@ -284,8 +283,8 @@ int vp9_drop_frame(VP9_COMP *const cpi) {
} 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)(cpi->oxcf.drop_frames_water_mark *
cpi->oxcf.optimal_buffer_level / 100);
int drop_mark = (int)(oxcf->drop_frames_water_mark *
oxcf->optimal_buffer_level / 100);
if ((rc->buffer_level > drop_mark) &&
(rc->decimation_factor > 0)) {
--rc->decimation_factor;