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Add vaq to new rate control

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siivonek 2020-03-19 21:43:52 +02:00
parent 1bbc598d75
commit 0a4ce3c0aa
1 changed files with 21 additions and 0 deletions
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21
src/rate_control.c
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@ -640,6 +640,7 @@ static double get_ctu_bits(encoder_state_t * const state, vector2d_t pos) {
void kvz_set_ctu_qp_lambda(encoder_state_t * const state, vector2d_t pos) {
double bits = get_ctu_bits(state, pos);
const encoder_control_t* const ctrl = state->encoder_control;
const encoder_control_t * const encoder = state->encoder_control;
const int frame_allocation = state->encoder_control->cfg.frame_allocation;
@ -750,6 +751,26 @@ void kvz_set_ctu_qp_lambda(encoder_state_t * const state, vector2d_t pos) {
ctu->qp = est_qp;
ctu->lambda = est_lambda;
ctu->i_cost = 0;
// Apply variance adaptive quantization
if (ctrl->cfg.vaq) {
vector2d_t lcu = {
pos.x + state->tile->lcu_offset_x,
pos.y + state->tile->lcu_offset_y
};
int id = lcu.x + lcu.y * state->tile->frame->width_in_lcu;
int aq_offset = round(state->frame->aq_offsets[id]);
state->qp += aq_offset;
// Maximum delta QP is clipped between [-26, 25] according to ITU T-REC-H.265 specification chapter 7.4.9.10 Transform unit semantics
// Since this value will be later combined with qp_pred, clip to half of that instead to be safe
state->qp = CLIP(state->frame->QP - 13, state->frame->QP + 12, state->qp);
state->qp = CLIP_TO_QP(state->qp);
state->lambda = qp_to_lambda(state, state->qp);
state->lambda_sqrt = sqrt(state->lambda);
ctu->qp = state->qp;
ctu->lambda = state->lambda;
}
}