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Commit 4bb4c229 authored by Yunqing Wang's avatar Yunqing Wang Committed by Gerrit Code Review
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Merge "Encode_breakout code refactoring"

parents 370618ff 3779ccaf
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Showing with 92 additions and 75 deletions
vp9/encoder/vp9_pickmode.c
View file @ 4bb4c229
......@@ -290,6 +290,93 @@ static void free_pred_buffer(PRED_BUFFER *p) {
p->in_use = 0;
}
static void encode_breakout_test(VP9_COMP *cpi, MACROBLOCK *x,
BLOCK_SIZE bsize, int mi_row, int mi_col,
MV_REFERENCE_FRAME ref_frame,
PREDICTION_MODE this_mode,
unsigned int var_y, unsigned int sse_y,
struct buf_2d yv12_mb[][MAX_MB_PLANE],
int *rate, int64_t *dist) {
MACROBLOCKD *xd = &x->e_mbd;
MB_MODE_INFO *mbmi = &xd->mi[0]->mbmi;
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;
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) {
unsigned int sse_u, sse_v;
unsigned int var_u, var_v;
// Skip UV prediction unless breakout is zero (lossless) to save
// computation with low impact on the result
if (x->encode_breakout == 0) {
xd->plane[1].pre[0] = yv12_mb[ref_frame][1];
xd->plane[2].pre[0] = yv12_mb[ref_frame][2];
vp9_build_inter_predictors_sbuv(xd, mi_row, mi_col, bsize);
}
var_u = cpi->fn_ptr[uv_size].vf(x->plane[1].src.buf,
x->plane[1].src.stride,
xd->plane[1].dst.buf,
xd->plane[1].dst.stride, &sse_u);
// U skipping condition checking
if ((var_u * 4 <= thresh_ac) && (sse_u - var_u <= thresh_dc)) {
var_v = cpi->fn_ptr[uv_size].vf(x->plane[2].src.buf,
x->plane[2].src.stride,
xd->plane[2].dst.buf,
xd->plane[2].dst.stride, &sse_v);
// V skipping condition checking
if ((var_v * 4 <= thresh_ac) && (sse_v - var_v <= thresh_dc)) {
x->skip = 1;
// The cost of skip bit needs to be added.
*rate = cpi->inter_mode_cost[mbmi->mode_context[ref_frame]]
[INTER_OFFSET(this_mode)];
// More on this part of rate
// rate += vp9_cost_bit(vp9_get_skip_prob(cm, xd), 1);
// Scaling factor for SSE from spatial domain to frequency
// domain is 16. Adjust distortion accordingly.
// TODO(yunqingwang): In this function, only y-plane dist is
// calculated.
*dist = (sse << 4); // + ((sse_u + sse_v) << 4);
// *disable_skip = 1;
}
}
}
}
// TODO(jingning) placeholder for inter-frame non-RD mode decision.
// this needs various further optimizations. to be continued..
int64_t vp9_pick_inter_mode(VP9_COMP *cpi, MACROBLOCK *x,
......@@ -562,81 +649,11 @@ 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) {
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;
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) {
unsigned int sse_u, sse_v;
unsigned int var_u, var_v;
// Skip UV prediction unless breakout is zero (lossless) to save
// computation with low impact on the result
if (x->encode_breakout == 0) {
xd->plane[1].pre[0] = yv12_mb[ref_frame][1];
xd->plane[2].pre[0] = yv12_mb[ref_frame][2];
vp9_build_inter_predictors_sbuv(xd, mi_row, mi_col, bsize);
}
var_u = cpi->fn_ptr[uv_size].vf(x->plane[1].src.buf,
x->plane[1].src.stride,
xd->plane[1].dst.buf,
xd->plane[1].dst.stride, &sse_u);
// U skipping condition checking
if ((var_u * 4 <= thresh_ac) && (sse_u - var_u <= thresh_dc)) {
var_v = cpi->fn_ptr[uv_size].vf(x->plane[2].src.buf,
x->plane[2].src.stride,
xd->plane[2].dst.buf,
xd->plane[2].dst.stride, &sse_v);
// V skipping condition checking
if ((var_v * 4 <= thresh_ac) && (sse_v - var_v <= thresh_dc)) {
x->skip = 1;
// The cost of skip bit needs to be added.
rate = rate_mv;
rate += cpi->inter_mode_cost[mbmi->mode_context[ref_frame]]
[INTER_OFFSET(this_mode)];
// More on this part of rate
// rate += vp9_cost_bit(vp9_get_skip_prob(cm, xd), 1);
// Scaling factor for SSE from spatial domain to frequency
// domain is 16. Adjust distortion accordingly.
// TODO(yunqingwang): In this function, only y-plane dist is
// calculated.
dist = (sse << 4); // + ((sse_u + sse_v) << 4);
this_rd = RDCOST(x->rdmult, x->rddiv, rate, dist);
// *disable_skip = 1;
}
}
encode_breakout_test(cpi, x, bsize, mi_row, mi_col, ref_frame,
this_mode, var_y, sse_y, yv12_mb, &rate, &dist);
if (x->skip) {
rate += rate_mv;
this_rd = RDCOST(x->rdmult, x->rddiv, rate, dist);
}
}
......
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