653 строки
18 KiB
C
653 строки
18 KiB
C
/*
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "vpx_config.h"
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#include "encodemb.h"
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#include "vp8/common/reconinter.h"
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#include "quantize.h"
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#include "tokenize.h"
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#include "vp8/common/invtrans.h"
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#include "vp8/common/recon.h"
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#include "vp8/common/reconintra.h"
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#include "dct.h"
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#include "vpx_mem/vpx_mem.h"
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#include "rdopt.h"
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#if CONFIG_RUNTIME_CPU_DETECT
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#define IF_RTCD(x) (x)
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#else
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#define IF_RTCD(x) NULL
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#endif
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void vp8_subtract_b_c(BLOCK *be, BLOCKD *bd, int pitch)
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{
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unsigned char *src_ptr = (*(be->base_src) + be->src);
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short *diff_ptr = be->src_diff;
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unsigned char *pred_ptr = bd->predictor;
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int src_stride = be->src_stride;
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int r, c;
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for (r = 0; r < 4; r++)
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{
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for (c = 0; c < 4; c++)
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{
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diff_ptr[c] = src_ptr[c] - pred_ptr[c];
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}
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diff_ptr += pitch;
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pred_ptr += pitch;
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src_ptr += src_stride;
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}
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}
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void vp8_subtract_mbuv_c(short *diff, unsigned char *usrc, unsigned char *vsrc, unsigned char *pred, int stride)
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{
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short *udiff = diff + 256;
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short *vdiff = diff + 320;
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unsigned char *upred = pred + 256;
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unsigned char *vpred = pred + 320;
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int r, c;
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for (r = 0; r < 8; r++)
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{
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for (c = 0; c < 8; c++)
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{
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udiff[c] = usrc[c] - upred[c];
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}
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udiff += 8;
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upred += 8;
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usrc += stride;
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}
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for (r = 0; r < 8; r++)
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{
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for (c = 0; c < 8; c++)
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{
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vdiff[c] = vsrc[c] - vpred[c];
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}
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vdiff += 8;
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vpred += 8;
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vsrc += stride;
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}
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}
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void vp8_subtract_mby_c(short *diff, unsigned char *src, unsigned char *pred, int stride)
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{
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int r, c;
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for (r = 0; r < 16; r++)
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{
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for (c = 0; c < 16; c++)
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{
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diff[c] = src[c] - pred[c];
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}
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diff += 16;
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pred += 16;
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src += stride;
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}
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}
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static void vp8_subtract_mb(const VP8_ENCODER_RTCD *rtcd, MACROBLOCK *x)
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{
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BLOCK *b = &x->block[0];
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ENCODEMB_INVOKE(&rtcd->encodemb, submby)(x->src_diff, *(b->base_src), x->e_mbd.predictor, b->src_stride);
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ENCODEMB_INVOKE(&rtcd->encodemb, submbuv)(x->src_diff, x->src.u_buffer, x->src.v_buffer, x->e_mbd.predictor, x->src.uv_stride);
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}
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static void build_dcblock(MACROBLOCK *x)
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{
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short *src_diff_ptr = &x->src_diff[384];
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int i;
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for (i = 0; i < 16; i++)
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{
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src_diff_ptr[i] = x->coeff[i * 16];
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}
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}
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void vp8_transform_mbuv(MACROBLOCK *x)
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{
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int i;
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for (i = 16; i < 24; i += 2)
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{
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x->vp8_short_fdct8x4(&x->block[i].src_diff[0],
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&x->block[i].coeff[0], 16);
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}
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}
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void vp8_transform_intra_mby(MACROBLOCK *x)
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{
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int i;
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for (i = 0; i < 16; i += 2)
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{
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x->vp8_short_fdct8x4(&x->block[i].src_diff[0],
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&x->block[i].coeff[0], 32);
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}
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// build dc block from 16 y dc values
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build_dcblock(x);
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// do 2nd order transform on the dc block
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x->short_walsh4x4(&x->block[24].src_diff[0],
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&x->block[24].coeff[0], 8);
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}
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static void transform_mb(MACROBLOCK *x)
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{
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int i;
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for (i = 0; i < 16; i += 2)
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{
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x->vp8_short_fdct8x4(&x->block[i].src_diff[0],
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&x->block[i].coeff[0], 32);
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}
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// build dc block from 16 y dc values
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if (x->e_mbd.mode_info_context->mbmi.mode != SPLITMV)
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build_dcblock(x);
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for (i = 16; i < 24; i += 2)
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{
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x->vp8_short_fdct8x4(&x->block[i].src_diff[0],
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&x->block[i].coeff[0], 16);
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}
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// do 2nd order transform on the dc block
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if (x->e_mbd.mode_info_context->mbmi.mode != SPLITMV)
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x->short_walsh4x4(&x->block[24].src_diff[0],
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&x->block[24].coeff[0], 8);
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}
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static void transform_mby(MACROBLOCK *x)
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{
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int i;
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for (i = 0; i < 16; i += 2)
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{
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x->vp8_short_fdct8x4(&x->block[i].src_diff[0],
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&x->block[i].coeff[0], 32);
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}
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// build dc block from 16 y dc values
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if (x->e_mbd.mode_info_context->mbmi.mode != SPLITMV)
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{
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build_dcblock(x);
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x->short_walsh4x4(&x->block[24].src_diff[0],
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&x->block[24].coeff[0], 8);
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}
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}
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#define RDTRUNC(RM,DM,R,D) ( (128+(R)*(RM)) & 0xFF )
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typedef struct vp8_token_state vp8_token_state;
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struct vp8_token_state{
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int rate;
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int error;
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signed char next;
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signed char token;
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short qc;
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};
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// TODO: experiments to find optimal multiple numbers
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#define Y1_RD_MULT 4
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#define UV_RD_MULT 2
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#define Y2_RD_MULT 16
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static const int plane_rd_mult[4]=
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{
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Y1_RD_MULT,
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Y2_RD_MULT,
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UV_RD_MULT,
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Y1_RD_MULT
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};
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static void optimize_b(MACROBLOCK *mb, int ib, int type,
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ENTROPY_CONTEXT *a, ENTROPY_CONTEXT *l,
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const VP8_ENCODER_RTCD *rtcd)
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{
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BLOCK *b;
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BLOCKD *d;
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vp8_token_state tokens[17][2];
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unsigned best_mask[2];
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const short *dequant_ptr;
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const short *coeff_ptr;
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short *qcoeff_ptr;
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short *dqcoeff_ptr;
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int eob;
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int i0;
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int rc;
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int x;
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int sz = 0;
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int next;
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int rdmult;
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int rddiv;
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int final_eob;
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int rd_cost0;
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int rd_cost1;
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int rate0;
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int rate1;
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int error0;
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int error1;
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int t0;
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int t1;
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int best;
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int band;
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int pt;
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int i;
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int err_mult = plane_rd_mult[type];
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b = &mb->block[ib];
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d = &mb->e_mbd.block[ib];
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/* Enable this to test the effect of RDO as a replacement for the dynamic
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* zero bin instead of an augmentation of it.
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*/
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#if 0
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vp8_strict_quantize_b(b, d);
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#endif
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dequant_ptr = d->dequant;
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coeff_ptr = b->coeff;
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qcoeff_ptr = d->qcoeff;
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dqcoeff_ptr = d->dqcoeff;
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i0 = !type;
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eob = *d->eob;
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/* Now set up a Viterbi trellis to evaluate alternative roundings. */
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rdmult = mb->rdmult * err_mult;
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if(mb->e_mbd.mode_info_context->mbmi.ref_frame==INTRA_FRAME)
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rdmult = (rdmult * 9)>>4;
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rddiv = mb->rddiv;
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best_mask[0] = best_mask[1] = 0;
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/* Initialize the sentinel node of the trellis. */
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tokens[eob][0].rate = 0;
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tokens[eob][0].error = 0;
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tokens[eob][0].next = 16;
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tokens[eob][0].token = DCT_EOB_TOKEN;
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tokens[eob][0].qc = 0;
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*(tokens[eob] + 1) = *(tokens[eob] + 0);
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next = eob;
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for (i = eob; i-- > i0;)
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{
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int base_bits;
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int d2;
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int dx;
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rc = vp8_default_zig_zag1d[i];
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x = qcoeff_ptr[rc];
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/* Only add a trellis state for non-zero coefficients. */
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if (x)
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{
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int shortcut=0;
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error0 = tokens[next][0].error;
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error1 = tokens[next][1].error;
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/* Evaluate the first possibility for this state. */
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rate0 = tokens[next][0].rate;
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rate1 = tokens[next][1].rate;
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t0 = (vp8_dct_value_tokens_ptr + x)->Token;
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/* Consider both possible successor states. */
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if (next < 16)
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{
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band = vp8_coef_bands[i + 1];
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pt = vp8_prev_token_class[t0];
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rate0 +=
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mb->token_costs[type][band][pt][tokens[next][0].token];
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rate1 +=
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mb->token_costs[type][band][pt][tokens[next][1].token];
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}
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rd_cost0 = RDCOST(rdmult, rddiv, rate0, error0);
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rd_cost1 = RDCOST(rdmult, rddiv, rate1, error1);
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if (rd_cost0 == rd_cost1)
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{
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rd_cost0 = RDTRUNC(rdmult, rddiv, rate0, error0);
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rd_cost1 = RDTRUNC(rdmult, rddiv, rate1, error1);
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}
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/* And pick the best. */
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best = rd_cost1 < rd_cost0;
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base_bits = *(vp8_dct_value_cost_ptr + x);
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dx = dqcoeff_ptr[rc] - coeff_ptr[rc];
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d2 = dx*dx;
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tokens[i][0].rate = base_bits + (best ? rate1 : rate0);
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tokens[i][0].error = d2 + (best ? error1 : error0);
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tokens[i][0].next = next;
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tokens[i][0].token = t0;
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tokens[i][0].qc = x;
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best_mask[0] |= best << i;
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/* Evaluate the second possibility for this state. */
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rate0 = tokens[next][0].rate;
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rate1 = tokens[next][1].rate;
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if((abs(x)*dequant_ptr[rc]>abs(coeff_ptr[rc])) &&
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(abs(x)*dequant_ptr[rc]<abs(coeff_ptr[rc])+dequant_ptr[rc]))
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shortcut = 1;
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else
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shortcut = 0;
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if(shortcut)
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{
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sz = -(x < 0);
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x -= 2*sz + 1;
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}
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/* Consider both possible successor states. */
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if (!x)
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{
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/* If we reduced this coefficient to zero, check to see if
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* we need to move the EOB back here.
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*/
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t0 = tokens[next][0].token == DCT_EOB_TOKEN ?
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DCT_EOB_TOKEN : ZERO_TOKEN;
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t1 = tokens[next][1].token == DCT_EOB_TOKEN ?
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DCT_EOB_TOKEN : ZERO_TOKEN;
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}
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else
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{
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t0=t1 = (vp8_dct_value_tokens_ptr + x)->Token;
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}
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if (next < 16)
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{
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band = vp8_coef_bands[i + 1];
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if(t0!=DCT_EOB_TOKEN)
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{
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pt = vp8_prev_token_class[t0];
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rate0 += mb->token_costs[type][band][pt][
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tokens[next][0].token];
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}
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if(t1!=DCT_EOB_TOKEN)
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{
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pt = vp8_prev_token_class[t1];
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rate1 += mb->token_costs[type][band][pt][
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tokens[next][1].token];
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}
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}
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rd_cost0 = RDCOST(rdmult, rddiv, rate0, error0);
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rd_cost1 = RDCOST(rdmult, rddiv, rate1, error1);
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if (rd_cost0 == rd_cost1)
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{
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rd_cost0 = RDTRUNC(rdmult, rddiv, rate0, error0);
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rd_cost1 = RDTRUNC(rdmult, rddiv, rate1, error1);
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}
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/* And pick the best. */
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best = rd_cost1 < rd_cost0;
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base_bits = *(vp8_dct_value_cost_ptr + x);
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if(shortcut)
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{
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dx -= (dequant_ptr[rc] + sz) ^ sz;
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d2 = dx*dx;
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}
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tokens[i][1].rate = base_bits + (best ? rate1 : rate0);
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tokens[i][1].error = d2 + (best ? error1 : error0);
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tokens[i][1].next = next;
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tokens[i][1].token =best?t1:t0;
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tokens[i][1].qc = x;
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best_mask[1] |= best << i;
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/* Finally, make this the new head of the trellis. */
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next = i;
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}
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/* There's no choice to make for a zero coefficient, so we don't
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* add a new trellis node, but we do need to update the costs.
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*/
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else
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{
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band = vp8_coef_bands[i + 1];
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t0 = tokens[next][0].token;
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t1 = tokens[next][1].token;
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/* Update the cost of each path if we're past the EOB token. */
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if (t0 != DCT_EOB_TOKEN)
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{
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tokens[next][0].rate += mb->token_costs[type][band][0][t0];
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tokens[next][0].token = ZERO_TOKEN;
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}
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if (t1 != DCT_EOB_TOKEN)
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{
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tokens[next][1].rate += mb->token_costs[type][band][0][t1];
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tokens[next][1].token = ZERO_TOKEN;
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}
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/* Don't update next, because we didn't add a new node. */
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}
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}
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/* Now pick the best path through the whole trellis. */
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band = vp8_coef_bands[i + 1];
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VP8_COMBINEENTROPYCONTEXTS(pt, *a, *l);
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rate0 = tokens[next][0].rate;
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rate1 = tokens[next][1].rate;
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error0 = tokens[next][0].error;
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error1 = tokens[next][1].error;
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t0 = tokens[next][0].token;
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t1 = tokens[next][1].token;
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rate0 += mb->token_costs[type][band][pt][t0];
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rate1 += mb->token_costs[type][band][pt][t1];
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rd_cost0 = RDCOST(rdmult, rddiv, rate0, error0);
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rd_cost1 = RDCOST(rdmult, rddiv, rate1, error1);
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if (rd_cost0 == rd_cost1)
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{
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rd_cost0 = RDTRUNC(rdmult, rddiv, rate0, error0);
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rd_cost1 = RDTRUNC(rdmult, rddiv, rate1, error1);
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}
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best = rd_cost1 < rd_cost0;
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final_eob = i0 - 1;
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for (i = next; i < eob; i = next)
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{
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x = tokens[i][best].qc;
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if (x)
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final_eob = i;
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rc = vp8_default_zig_zag1d[i];
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qcoeff_ptr[rc] = x;
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dqcoeff_ptr[rc] = x * dequant_ptr[rc];
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next = tokens[i][best].next;
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best = (best_mask[best] >> i) & 1;
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}
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final_eob++;
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*a = *l = (final_eob != !type);
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*d->eob = (char)final_eob;
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}
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static void check_reset_2nd_coeffs(MACROBLOCKD *x, int type,
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ENTROPY_CONTEXT *a, ENTROPY_CONTEXT *l)
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{
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int sum=0;
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int i;
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BLOCKD *bd = &x->block[24];
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if(bd->dequant[0]>=35 && bd->dequant[1]>=35)
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return;
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for(i=0;i<(*bd->eob);i++)
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{
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int coef = bd->dqcoeff[vp8_default_zig_zag1d[i]];
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sum+= (coef>=0)?coef:-coef;
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if(sum>=35)
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return;
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}
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/**************************************************************************
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our inverse hadamard transform effectively is weighted sum of all 16 inputs
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with weight either 1 or -1. It has a last stage scaling of (sum+3)>>3. And
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dc only idct is (dc+4)>>3. So if all the sums are between -35 and 29, the
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output after inverse wht and idct will be all zero. A sum of absolute value
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smaller than 35 guarantees all 16 different (+1/-1) weighted sums in wht
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fall between -35 and +35.
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**************************************************************************/
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if(sum < 35)
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{
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for(i=0;i<(*bd->eob);i++)
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{
|
|
int rc = vp8_default_zig_zag1d[i];
|
|
bd->qcoeff[rc]=0;
|
|
bd->dqcoeff[rc]=0;
|
|
}
|
|
*bd->eob = 0;
|
|
*a = *l = (*bd->eob != !type);
|
|
}
|
|
}
|
|
|
|
static void optimize_mb(MACROBLOCK *x, const VP8_ENCODER_RTCD *rtcd)
|
|
{
|
|
int b;
|
|
int type;
|
|
int has_2nd_order;
|
|
|
|
ENTROPY_CONTEXT_PLANES t_above, t_left;
|
|
ENTROPY_CONTEXT *ta;
|
|
ENTROPY_CONTEXT *tl;
|
|
|
|
vpx_memcpy(&t_above, x->e_mbd.above_context, sizeof(ENTROPY_CONTEXT_PLANES));
|
|
vpx_memcpy(&t_left, x->e_mbd.left_context, sizeof(ENTROPY_CONTEXT_PLANES));
|
|
|
|
ta = (ENTROPY_CONTEXT *)&t_above;
|
|
tl = (ENTROPY_CONTEXT *)&t_left;
|
|
|
|
has_2nd_order = (x->e_mbd.mode_info_context->mbmi.mode != B_PRED
|
|
&& x->e_mbd.mode_info_context->mbmi.mode != SPLITMV);
|
|
type = has_2nd_order ? PLANE_TYPE_Y_NO_DC : PLANE_TYPE_Y_WITH_DC;
|
|
|
|
for (b = 0; b < 16; b++)
|
|
{
|
|
optimize_b(x, b, type,
|
|
ta + vp8_block2above[b], tl + vp8_block2left[b], rtcd);
|
|
}
|
|
|
|
for (b = 16; b < 24; b++)
|
|
{
|
|
optimize_b(x, b, PLANE_TYPE_UV,
|
|
ta + vp8_block2above[b], tl + vp8_block2left[b], rtcd);
|
|
}
|
|
|
|
if (has_2nd_order)
|
|
{
|
|
b=24;
|
|
optimize_b(x, b, PLANE_TYPE_Y2,
|
|
ta + vp8_block2above[b], tl + vp8_block2left[b], rtcd);
|
|
check_reset_2nd_coeffs(&x->e_mbd, PLANE_TYPE_Y2,
|
|
ta + vp8_block2above[b], tl + vp8_block2left[b]);
|
|
}
|
|
}
|
|
|
|
|
|
void vp8_optimize_mby(MACROBLOCK *x, const VP8_ENCODER_RTCD *rtcd)
|
|
{
|
|
int b;
|
|
int type;
|
|
int has_2nd_order;
|
|
|
|
ENTROPY_CONTEXT_PLANES t_above, t_left;
|
|
ENTROPY_CONTEXT *ta;
|
|
ENTROPY_CONTEXT *tl;
|
|
|
|
if (!x->e_mbd.above_context)
|
|
return;
|
|
|
|
if (!x->e_mbd.left_context)
|
|
return;
|
|
|
|
vpx_memcpy(&t_above, x->e_mbd.above_context, sizeof(ENTROPY_CONTEXT_PLANES));
|
|
vpx_memcpy(&t_left, x->e_mbd.left_context, sizeof(ENTROPY_CONTEXT_PLANES));
|
|
|
|
ta = (ENTROPY_CONTEXT *)&t_above;
|
|
tl = (ENTROPY_CONTEXT *)&t_left;
|
|
|
|
has_2nd_order = (x->e_mbd.mode_info_context->mbmi.mode != B_PRED
|
|
&& x->e_mbd.mode_info_context->mbmi.mode != SPLITMV);
|
|
type = has_2nd_order ? PLANE_TYPE_Y_NO_DC : PLANE_TYPE_Y_WITH_DC;
|
|
|
|
for (b = 0; b < 16; b++)
|
|
{
|
|
optimize_b(x, b, type,
|
|
ta + vp8_block2above[b], tl + vp8_block2left[b], rtcd);
|
|
}
|
|
|
|
|
|
if (has_2nd_order)
|
|
{
|
|
b=24;
|
|
optimize_b(x, b, PLANE_TYPE_Y2,
|
|
ta + vp8_block2above[b], tl + vp8_block2left[b], rtcd);
|
|
check_reset_2nd_coeffs(&x->e_mbd, PLANE_TYPE_Y2,
|
|
ta + vp8_block2above[b], tl + vp8_block2left[b]);
|
|
}
|
|
}
|
|
|
|
void vp8_optimize_mbuv(MACROBLOCK *x, const VP8_ENCODER_RTCD *rtcd)
|
|
{
|
|
int b;
|
|
ENTROPY_CONTEXT_PLANES t_above, t_left;
|
|
ENTROPY_CONTEXT *ta;
|
|
ENTROPY_CONTEXT *tl;
|
|
|
|
if (!x->e_mbd.above_context)
|
|
return;
|
|
|
|
if (!x->e_mbd.left_context)
|
|
return;
|
|
|
|
vpx_memcpy(&t_above, x->e_mbd.above_context, sizeof(ENTROPY_CONTEXT_PLANES));
|
|
vpx_memcpy(&t_left, x->e_mbd.left_context, sizeof(ENTROPY_CONTEXT_PLANES));
|
|
|
|
ta = (ENTROPY_CONTEXT *)&t_above;
|
|
tl = (ENTROPY_CONTEXT *)&t_left;
|
|
|
|
for (b = 16; b < 24; b++)
|
|
{
|
|
optimize_b(x, b, PLANE_TYPE_UV,
|
|
ta + vp8_block2above[b], tl + vp8_block2left[b], rtcd);
|
|
}
|
|
}
|
|
|
|
void vp8_encode_inter16x16(const VP8_ENCODER_RTCD *rtcd, MACROBLOCK *x)
|
|
{
|
|
vp8_build_inter_predictors_mb_e(&x->e_mbd);
|
|
|
|
vp8_subtract_mb(rtcd, x);
|
|
|
|
transform_mb(x);
|
|
|
|
vp8_quantize_mb(x);
|
|
|
|
if (x->optimize)
|
|
optimize_mb(x, rtcd);
|
|
|
|
}
|
|
|
|
/* this funciton is used by first pass only */
|
|
void vp8_encode_inter16x16y(const VP8_ENCODER_RTCD *rtcd, MACROBLOCK *x)
|
|
{
|
|
BLOCK *b = &x->block[0];
|
|
|
|
vp8_build_inter16x16_predictors_mby(&x->e_mbd);
|
|
|
|
ENCODEMB_INVOKE(&rtcd->encodemb, submby)(x->src_diff, *(b->base_src), x->e_mbd.predictor, b->src_stride);
|
|
|
|
transform_mby(x);
|
|
|
|
vp8_quantize_mby(x);
|
|
|
|
vp8_inverse_transform_mby(IF_RTCD(&rtcd->common->idct), &x->e_mbd);
|
|
|
|
}
|