Commit 1409d1e1 authored by Alex Converse's avatar Alex Converse

Allow lossless breakout in non-rd mode decision.

This is very helpful for large moving windows in screencasts.

Change-Id: I91b5f9acb133281ee85ccd8f843e6bae5cadefca
parent 4efcf838
......@@ -370,29 +370,35 @@ int64_t vp9_pick_inter_mode(VP9_COMP *cpi, MACROBLOCK *x,
// Skipping checking: test to see if this block can be reconstructed by
// prediction only.
if (cpi->allow_encode_breakout && x->encode_breakout) {
if (cpi->allow_encode_breakout) {
const BLOCK_SIZE uv_size = get_plane_block_size(bsize, &xd->plane[1]);
unsigned int var = var_y, sse = sse_y;
// Skipping threshold for ac.
unsigned int thresh_ac;
// Skipping threshold for dc.
unsigned int thresh_dc;
// Set a maximum for threshold to avoid big PSNR loss in low bit rate
// case. Use extreme low threshold for static frames to limit skipping.
const unsigned int max_thresh = 36000;
// The encode_breakout input
const unsigned int min_thresh =
MIN(((unsigned int)x->encode_breakout << 4), max_thresh);
// Calculate threshold according to dequant value.
thresh_ac = (xd->plane[0].dequant[1] * xd->plane[0].dequant[1]) / 9;
thresh_ac = clamp(thresh_ac, min_thresh, max_thresh);
// Adjust ac threshold according to partition size.
thresh_ac >>= 8 - (b_width_log2_lookup[bsize] +
b_height_log2_lookup[bsize]);
thresh_dc = (xd->plane[0].dequant[0] * xd->plane[0].dequant[0] >> 6);
if (x->encode_breakout > 0) {
// Set a maximum for threshold to avoid big PSNR loss in low bit rate
// case. Use extreme low threshold for static frames to limit
// skipping.
const unsigned int max_thresh = 36000;
// The encode_breakout input
const unsigned int min_thresh =
MIN(((unsigned int)x->encode_breakout << 4), max_thresh);
// Calculate threshold according to dequant value.
thresh_ac = (xd->plane[0].dequant[1] * xd->plane[0].dequant[1]) / 9;
thresh_ac = clamp(thresh_ac, min_thresh, max_thresh);
// Adjust ac threshold according to partition size.
thresh_ac >>=
8 - (b_width_log2_lookup[bsize] + b_height_log2_lookup[bsize]);
thresh_dc = (xd->plane[0].dequant[0] * xd->plane[0].dequant[0] >> 6);
} else {
thresh_ac = 0;
thresh_dc = 0;
}
// Y skipping condition checking for ac and dc.
if (var <= thresh_ac && (sse - var) <= thresh_dc) {
......
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