Commit dc002cb7 authored by JackyChen's avatar JackyChen Committed by jackychen

VP9_resizing: adjust the threshold and another improvement.

Adjust the qp threshold based on the denoising setting; not allow
to scale directly from original resolution to one half and vise versa.

Change-Id: I032a9b22f8e1c88de6bb81cf8351367223a3e40d
parent 15cc8bc7
......@@ -1828,6 +1828,8 @@ int vp9_resize_one_pass_cbr(VP9_COMP *cpi) {
const VP9_COMMON *const cm = &cpi->common;
RATE_CONTROL *const rc = &cpi->rc;
RESIZE_ACTION resize_action = NO_RESIZE;
int avg_qp_thr1 = 70;
int avg_qp_thr2 = 50;
cpi->resize_scale_num = 1;
cpi->resize_scale_den = 1;
// Don't resize on key frame; reset the counters on key frame.
......@@ -1836,6 +1838,15 @@ int vp9_resize_one_pass_cbr(VP9_COMP *cpi) {
cpi->resize_count = 0;
return 0;
}
#if CONFIG_VP9_TEMPORAL_DENOISING
// If denoiser is on, apply a smaller qp threshold.
if (cpi->oxcf.noise_sensitivity > 0) {
avg_qp_thr1 = 60;
avg_qp_thr2 = 40;
}
#endif
// Resize based on average buffer underflow and QP over some window.
// Ignore samples close to key frame, since QP is usually high after key.
if (cpi->rc.frames_since_key > 1 * cpi->framerate) {
......@@ -1852,11 +1863,7 @@ int vp9_resize_one_pass_cbr(VP9_COMP *cpi) {
// Resize back up if average QP is low, and we are currently in a resized
// down state, i.e. 1/2 or 3/4 of original resolution.
// Currently, use a flag to turn 3/4 resizing feature on/off.
if (cpi->resize_state == ORIG &&
cpi->resize_buffer_underflow > (cpi->resize_count >> 1)) {
resize_action = DOWN_ONEHALF;
cpi->resize_state = ONE_HALF;
} else if (cpi->resize_buffer_underflow > (cpi->resize_count >> 2)) {
if (cpi->resize_buffer_underflow > (cpi->resize_count >> 2)) {
if (cpi->resize_state == THREE_QUARTER) {
resize_action = DOWN_ONEHALF;
cpi->resize_state = ONE_HALF;
......@@ -1865,9 +1872,9 @@ int vp9_resize_one_pass_cbr(VP9_COMP *cpi) {
cpi->resize_state = ONEHALFONLY_RESIZE ? ONE_HALF : THREE_QUARTER;
}
} else if (cpi->resize_state != ORIG &&
avg_qp < 60 * cpi->rc.worst_quality / 100) {
avg_qp < avg_qp_thr1 * cpi->rc.worst_quality / 100) {
if (cpi->resize_state == THREE_QUARTER ||
avg_qp < 40 * cpi->rc.worst_quality / 100 ||
avg_qp < avg_qp_thr2 * cpi->rc.worst_quality / 100 ||
ONEHALFONLY_RESIZE) {
resize_action = UP_ORIG;
cpi->resize_state = ORIG;
......
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