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Signal QP in slice header if tiles and slices=tiles are enabled

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Keeps the PPS constant for various purposes
This commit is contained in:
Marko Viitanen 2018-08-16 08:33:13 +03:00
parent 9d22c1ec3e
commit b85ae3688e
1 changed files with 8 additions and 2 deletions
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10
src/encoder_state-bitstream.c
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@ -451,7 +451,11 @@ static void encoder_state_write_bitstream_pic_parameter_set(bitstream_t* stream,
WRITE_UE(stream, 0, "num_ref_idx_l0_default_active_minus1"); WRITE_UE(stream, 0, "num_ref_idx_l0_default_active_minus1");
WRITE_UE(stream, 0, "num_ref_idx_l1_default_active_minus1"); WRITE_UE(stream, 0, "num_ref_idx_l1_default_active_minus1");
WRITE_SE(stream, ((int8_t)encoder->cfg.qp) - 26, "pic_init_qp_minus26");
// If tiles and slices = tiles is enabled, signal QP in the slice header. Keeping the PPS constant for OMAF etc
bool signal_qp_in_slice_header = (encoder->cfg.slices & KVZ_SLICES_TILES) && encoder->tiles_enable;
WRITE_SE(stream, signal_qp_in_slice_header ?0:(((int8_t)encoder->cfg.qp) - 26), "pic_init_qp_minus26");
WRITE_U(stream, 0, 1, "constrained_intra_pred_flag"); WRITE_U(stream, 0, 1, "constrained_intra_pred_flag");
WRITE_U(stream, encoder->cfg.trskip_enable, 1, "transform_skip_enabled_flag"); WRITE_U(stream, encoder->cfg.trskip_enable, 1, "transform_skip_enabled_flag");
@ -804,7 +808,9 @@ static void kvz_encoder_state_write_bitstream_slice_header_independent(
} }
{ {
int slice_qp_delta = state->frame->QP - encoder->cfg.qp; // If tiles are enabled, signal the full QP here (relative to the base value of 26)
bool signal_qp_in_slice_header = (encoder->cfg.slices & KVZ_SLICES_TILES) && encoder->tiles_enable;
int slice_qp_delta = state->frame->QP - (signal_qp_in_slice_header ? 26 : encoder->cfg.qp);
WRITE_SE(stream, slice_qp_delta, "slice_qp_delta"); WRITE_SE(stream, slice_qp_delta, "slice_qp_delta");
} }
} }