ref: 27533fa245c2ea4a8fb52ca498ed7165e28c79c5
dir: /vp9/encoder/vp9_encodeintra.c/
/*
* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "./vpx_config.h"
#include "vp9_rtcd.h"
#include "vp9/encoder/vp9_quantize.h"
#include "vp9/common/vp9_reconintra.h"
#include "vp9/encoder/vp9_encodemb.h"
#include "vp9/common/vp9_invtrans.h"
#include "vp9/encoder/vp9_encodeintra.h"
static void encode_intra4x4block(MACROBLOCK *x, int ib);
int vp9_encode_intra(VP9_COMP *cpi, MACROBLOCK *x, int use_16x16_pred) {
MB_MODE_INFO * mbmi = &x->e_mbd.mode_info_context->mbmi;
(void) cpi;
if (use_16x16_pred) {
mbmi->mode = DC_PRED;
mbmi->uv_mode = DC_PRED;
mbmi->ref_frame = INTRA_FRAME;
vp9_encode_intra16x16mby(&cpi->common, x);
} else {
int i;
for (i = 0; i < 16; i++) {
x->e_mbd.block[i].bmi.as_mode.first = B_DC_PRED;
encode_intra4x4block(x, i);
}
}
return vp9_get_mb_ss(x->src_diff);
}
static void encode_intra4x4block(MACROBLOCK *x, int ib) {
BLOCKD *b = &x->e_mbd.block[ib];
BLOCK *be = &x->block[ib];
MACROBLOCKD * const xd = &x->e_mbd;
TX_TYPE tx_type;
assert(ib < 16);
#if CONFIG_NEWBINTRAMODES
b->bmi.as_mode.context = vp9_find_bpred_context(&x->e_mbd, b);
#endif
vp9_intra4x4_predict(&x->e_mbd, b, b->bmi.as_mode.first, b->predictor, 16);
vp9_subtract_b(be, b, 16);
tx_type = get_tx_type_4x4(&x->e_mbd, ib);
if (tx_type != DCT_DCT) {
vp9_short_fht4x4(be->src_diff, be->coeff, 16, tx_type);
vp9_ht_quantize_b_4x4(x, ib, tx_type);
vp9_short_iht4x4(BLOCK_OFFSET(xd->plane[0].dqcoeff, ib, 16),
b->diff, 16, tx_type);
} else {
x->fwd_txm4x4(be->src_diff, be->coeff, 32);
x->quantize_b_4x4(x, ib, 16);
vp9_inverse_transform_b_4x4(&x->e_mbd, xd->plane[0].eobs[ib],
BLOCK_OFFSET(xd->plane[0].dqcoeff, ib, 16),
b->diff, 32);
}
vp9_recon_b(b->predictor, b->diff, *(b->base_dst) + b->dst, b->dst_stride);
}
void vp9_encode_intra4x4mby(MACROBLOCK *mb) {
int i;
for (i = 0; i < 16; i++)
encode_intra4x4block(mb, i);
}
void vp9_encode_intra16x16mby(VP9_COMMON *const cm, MACROBLOCK *x) {
MACROBLOCKD *xd = &x->e_mbd;
BLOCK *b = &x->block[0];
TX_SIZE tx_size = xd->mode_info_context->mbmi.txfm_size;
vp9_build_intra_predictors_mby(xd);
vp9_subtract_mby(x->src_diff, *(b->base_src), xd->predictor, b->src_stride);
switch (tx_size) {
case TX_16X16:
vp9_transform_sby_16x16(x, BLOCK_SIZE_MB16X16);
vp9_quantize_sby_16x16(x, BLOCK_SIZE_MB16X16);
if (x->optimize)
vp9_optimize_sby_16x16(cm, x, BLOCK_SIZE_MB16X16);
vp9_inverse_transform_sby_16x16(xd, BLOCK_SIZE_MB16X16);
break;
case TX_8X8:
vp9_transform_sby_8x8(x, BLOCK_SIZE_MB16X16);
vp9_quantize_sby_8x8(x, BLOCK_SIZE_MB16X16);
if (x->optimize)
vp9_optimize_sby_8x8(cm, x, BLOCK_SIZE_MB16X16);
vp9_inverse_transform_sby_8x8(xd, BLOCK_SIZE_MB16X16);
break;
default:
vp9_transform_sby_4x4(x, BLOCK_SIZE_MB16X16);
vp9_quantize_sby_4x4(x, BLOCK_SIZE_MB16X16);
if (x->optimize)
vp9_optimize_sby_4x4(cm, x, BLOCK_SIZE_MB16X16);
vp9_inverse_transform_sby_4x4(xd, BLOCK_SIZE_MB16X16);
break;
}
vp9_recon_mby(xd);
}
void vp9_encode_intra16x16mbuv(VP9_COMMON *const cm, MACROBLOCK *x) {
MACROBLOCKD *xd = &x->e_mbd;
TX_SIZE tx_size = xd->mode_info_context->mbmi.txfm_size;
vp9_build_intra_predictors_mbuv(xd);
vp9_subtract_mbuv(x->src_diff, x->src.u_buffer, x->src.v_buffer,
xd->predictor, x->src.uv_stride);
switch (tx_size) {
case TX_4X4:
vp9_transform_sbuv_4x4(x, BLOCK_SIZE_MB16X16);
vp9_quantize_sbuv_4x4(x, BLOCK_SIZE_MB16X16);
if (x->optimize)
vp9_optimize_sbuv_4x4(cm, x, BLOCK_SIZE_MB16X16);
vp9_inverse_transform_sbuv_4x4(xd, BLOCK_SIZE_MB16X16);
break;
default: // 16x16 or 8x8
vp9_transform_sbuv_8x8(x, BLOCK_SIZE_MB16X16);
vp9_quantize_sbuv_8x8(x, BLOCK_SIZE_MB16X16);
if (x->optimize)
vp9_optimize_sbuv_8x8(cm, x, BLOCK_SIZE_MB16X16);
vp9_inverse_transform_sbuv_8x8(xd, BLOCK_SIZE_MB16X16);
break;
}
vp9_recon_intra_mbuv(xd);
}
void vp9_encode_intra8x8(MACROBLOCK *x, int ib) {
MACROBLOCKD *xd = &x->e_mbd;
BLOCKD *b = &xd->block[ib];
BLOCK *be = &x->block[ib];
const int iblock[4] = {0, 1, 4, 5};
int i;
TX_TYPE tx_type;
vp9_intra8x8_predict(xd, b, b->bmi.as_mode.first, b->predictor, 16);
// generate residual blocks
vp9_subtract_4b_c(be, b, 16);
if (xd->mode_info_context->mbmi.txfm_size == TX_8X8) {
int idx = (ib & 0x02) ? (ib + 2) : ib;
int16_t * const dqcoeff = BLOCK_OFFSET(xd->plane[0].dqcoeff, idx, 16);
assert(idx < 16);
tx_type = get_tx_type_8x8(xd, ib);
if (tx_type != DCT_DCT) {
vp9_short_fht8x8(be->src_diff, (x->block + idx)->coeff, 16, tx_type);
x->quantize_b_8x8(x, idx, tx_type, 16);
vp9_short_iht8x8(dqcoeff, xd->block[ib].diff,
16, tx_type);
} else {
x->fwd_txm8x8(be->src_diff, (x->block + idx)->coeff, 32);
x->quantize_b_8x8(x, idx, DCT_DCT, 16);
vp9_short_idct8x8(dqcoeff, xd->block[ib].diff, 32);
}
} else {
for (i = 0; i < 4; i++) {
int idx = ib + iblock[i];
int16_t * const dqcoeff = BLOCK_OFFSET(xd->plane[0].dqcoeff, idx, 16);
assert(idx < 16);
b = &xd->block[ib + iblock[i]];
be = &x->block[ib + iblock[i]];
tx_type = get_tx_type_4x4(xd, ib + iblock[i]);
if (tx_type != DCT_DCT) {
vp9_short_fht4x4(be->src_diff, be->coeff, 16, tx_type);
vp9_ht_quantize_b_4x4(x, ib + iblock[i], tx_type);
vp9_short_iht4x4(dqcoeff, b->diff, 16, tx_type);
} else if (!(i & 1) &&
get_tx_type_4x4(xd, ib + iblock[i] + 1) == DCT_DCT) {
x->fwd_txm8x4(be->src_diff, be->coeff, 32);
x->quantize_b_4x4_pair(x, ib + iblock[i], ib + iblock[i] + 1, 16);
vp9_inverse_transform_b_4x4(xd, xd->plane[0].eobs[ib + iblock[i]],
dqcoeff, b->diff, 32);
vp9_inverse_transform_b_4x4(xd, xd->plane[0].eobs[ib + iblock[i] + 1],
dqcoeff + 16, (b + 1)->diff, 32);
i++;
} else {
x->fwd_txm4x4(be->src_diff, be->coeff, 32);
x->quantize_b_4x4(x, ib + iblock[i], 16);
vp9_inverse_transform_b_4x4(xd, xd->plane[0].eobs[ib + iblock[i]],
dqcoeff, b->diff, 32);
}
}
}
// reconstruct submacroblock
for (i = 0; i < 4; i++) {
b = &xd->block[ib + iblock[i]];
vp9_recon_b_c(b->predictor, b->diff, *(b->base_dst) + b->dst,
b->dst_stride);
}
}
void vp9_encode_intra8x8mby(MACROBLOCK *x) {
int i;
for (i = 0; i < 4; i++)
vp9_encode_intra8x8(x, vp9_i8x8_block[i]);
}
static void encode_intra_uv4x4(MACROBLOCK *x, int ib, int mode) {
MACROBLOCKD * const xd = &x->e_mbd;
BLOCKD *b = &x->e_mbd.block[ib];
BLOCK *be = &x->block[ib];
int16_t * const dqcoeff = MB_SUBBLOCK_FIELD(xd, dqcoeff, ib);
const int plane = ib < 20 ? 1 : 2;
const int block = ib < 20 ? ib - 16 : ib - 20;
assert(ib >= 16 && ib < 24);
vp9_intra_uv4x4_predict(&x->e_mbd, b, mode, b->predictor, 8);
vp9_subtract_b(be, b, 8);
x->fwd_txm4x4(be->src_diff, be->coeff, 16);
x->quantize_b_4x4(x, ib, 16);
vp9_inverse_transform_b_4x4(&x->e_mbd, xd->plane[plane].eobs[block],
dqcoeff, b->diff, 16);
vp9_recon_uv_b_c(b->predictor, b->diff, *(b->base_dst) + b->dst,
b->dst_stride);
}
void vp9_encode_intra8x8mbuv(MACROBLOCK *x) {
int i;
for (i = 0; i < 4; i++) {
BLOCKD *b = &x->e_mbd.block[vp9_i8x8_block[i]];
int mode = b->bmi.as_mode.first;
encode_intra_uv4x4(x, i + 16, mode); // u
encode_intra_uv4x4(x, i + 20, mode); // v
}
}