ref: 9645cd4826de5a469e163838b997fccfd7907b91
parent: e765969971170118fe65e379c483d6414c9c89b3
parent: 4fb2ba2861fffd8fca7dffbaf761d2bf2998df4f
author: Marco Paniconi <[email protected]>
date: Wed Oct 28 17:59:17 EDT 2015
Merge "VP9-SVC: Allow frame dropping due to overshoot for spatial layers."
--- a/vp9/encoder/vp9_encoder.c
+++ b/vp9/encoder/vp9_encoder.c
@@ -3797,14 +3797,17 @@
}
// For 1 pass CBR, check if we are dropping this frame.
- // Never drop on key frame.
+ // For spatial layers, for now only check for frame-dropping on first spatial
+ // layer, and if decision is to drop, we drop whole super-frame.
if (oxcf->pass == 0 &&
oxcf->rc_mode == VPX_CBR &&
cm->frame_type != KEY_FRAME) {
- if (vp9_rc_drop_frame(cpi)) {
+ if (vp9_rc_drop_frame(cpi) ||
+ (is_one_pass_cbr_svc(cpi) && cpi->svc.rc_drop_superframe == 1)) {
vp9_rc_postencode_update_drop_frame(cpi);
++cm->current_video_frame;
cpi->ext_refresh_frame_flags_pending = 0;
+ cpi->svc.rc_drop_superframe = 1;
return;
}
}
--- a/vp9/encoder/vp9_ratectrl.c
+++ b/vp9/encoder/vp9_ratectrl.c
@@ -370,8 +370,9 @@
int vp9_rc_drop_frame(VP9_COMP *cpi) {
const VP9EncoderConfig *oxcf = &cpi->oxcf;
RATE_CONTROL *const rc = &cpi->rc;
-
- if (!oxcf->drop_frames_water_mark) {
+ if (!oxcf->drop_frames_water_mark ||
+ (is_one_pass_cbr_svc(cpi) &&
+ cpi->svc.spatial_layer_id > cpi->svc.first_spatial_layer_to_encode)) {
return 0;
} else {
if (rc->buffer_level < 0) {
--- a/vp9/encoder/vp9_svc_layercontext.c
+++ b/vp9/encoder/vp9_svc_layercontext.c
@@ -31,6 +31,7 @@
svc->spatial_layer_id = 0;
svc->temporal_layer_id = 0;
svc->first_spatial_layer_to_encode = 0;
+ svc->rc_drop_superframe = 0;
if (cpi->oxcf.error_resilient_mode == 0 && cpi->oxcf.pass == 2) {
if (vpx_realloc_frame_buffer(&cpi->svc.empty_frame.img,
@@ -567,6 +568,9 @@
cpi->alt_fb_idx = cpi->svc.ext_alt_fb_idx[sl];
}
}
+
+ if (cpi->svc.spatial_layer_id == cpi->svc.first_spatial_layer_to_encode)
+ cpi->svc.rc_drop_superframe = 0;
lc = &cpi->svc.layer_context[cpi->svc.spatial_layer_id *
cpi->svc.number_temporal_layers +
--- a/vp9/encoder/vp9_svc_layercontext.h
+++ b/vp9/encoder/vp9_svc_layercontext.h
@@ -56,6 +56,7 @@
int spatial_layer_to_encode;
int first_spatial_layer_to_encode;
+ int rc_drop_superframe;
// Workaround for multiple frame contexts
enum {
--- a/vpx/src/svc_encodeframe.c
+++ b/vpx/src/svc_encodeframe.c
@@ -485,6 +485,7 @@
enc_cfg->rc_buf_initial_sz = 500;
enc_cfg->rc_buf_optimal_sz = 600;
enc_cfg->rc_buf_sz = 1000;
+ enc_cfg->rc_dropframe_thresh = 0;
}
if (enc_cfg->g_error_resilient == 0 && si->use_multiple_frame_contexts == 0)