718 lines
22 KiB
C
718 lines
22 KiB
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 <math.h>
|
|
#include "vpx_mem/vpx_mem.h"
|
|
|
|
#include "onyx_int.h"
|
|
#include "quantize.h"
|
|
#include "vp8/common/quant_common.h"
|
|
|
|
#define EXACT_QUANT
|
|
|
|
#ifdef EXACT_FASTQUANT
|
|
void vp8_fast_quantize_b_c(BLOCK *b, BLOCKD *d)
|
|
{
|
|
int i, rc, eob;
|
|
int zbin;
|
|
int x, y, z, sz;
|
|
short *coeff_ptr = b->coeff;
|
|
short *zbin_ptr = b->zbin;
|
|
short *round_ptr = b->round;
|
|
short *quant_ptr = b->quant_fast;
|
|
unsigned char *quant_shift_ptr = b->quant_shift;
|
|
short *qcoeff_ptr = d->qcoeff;
|
|
short *dqcoeff_ptr = d->dqcoeff;
|
|
short *dequant_ptr = d->dequant;
|
|
|
|
vpx_memset(qcoeff_ptr, 0, 32);
|
|
vpx_memset(dqcoeff_ptr, 0, 32);
|
|
|
|
eob = -1;
|
|
|
|
for (i = 0; i < 16; i++)
|
|
{
|
|
rc = vp8_default_zig_zag1d[i];
|
|
z = coeff_ptr[rc];
|
|
zbin = zbin_ptr[rc] ;
|
|
|
|
sz = (z >> 31); // sign of z
|
|
x = (z ^ sz) - sz; // x = abs(z)
|
|
|
|
if (x >= zbin)
|
|
{
|
|
x += round_ptr[rc];
|
|
y = (((x * quant_ptr[rc]) >> 16) + x)
|
|
>> quant_shift_ptr[rc]; // quantize (x)
|
|
x = (y ^ sz) - sz; // get the sign back
|
|
qcoeff_ptr[rc] = x; // write to destination
|
|
dqcoeff_ptr[rc] = x * dequant_ptr[rc]; // dequantized value
|
|
|
|
if (y)
|
|
{
|
|
eob = i; // last nonzero coeffs
|
|
}
|
|
}
|
|
}
|
|
d->eob = eob + 1;
|
|
}
|
|
|
|
#else
|
|
|
|
void vp8_fast_quantize_b_c(BLOCK *b, BLOCKD *d)
|
|
{
|
|
int i, rc, eob;
|
|
int x, y, z, sz;
|
|
short *coeff_ptr = b->coeff;
|
|
short *round_ptr = b->round;
|
|
short *quant_ptr = b->quant_fast;
|
|
short *qcoeff_ptr = d->qcoeff;
|
|
short *dqcoeff_ptr = d->dqcoeff;
|
|
short *dequant_ptr = d->dequant;
|
|
|
|
eob = -1;
|
|
for (i = 0; i < 16; i++)
|
|
{
|
|
rc = vp8_default_zig_zag1d[i];
|
|
z = coeff_ptr[rc];
|
|
|
|
sz = (z >> 31); // sign of z
|
|
x = (z ^ sz) - sz; // x = abs(z)
|
|
|
|
y = ((x + round_ptr[rc]) * quant_ptr[rc]) >> 16; // quantize (x)
|
|
x = (y ^ sz) - sz; // get the sign back
|
|
qcoeff_ptr[rc] = x; // write to destination
|
|
dqcoeff_ptr[rc] = x * dequant_ptr[rc]; // dequantized value
|
|
|
|
if (y)
|
|
{
|
|
eob = i; // last nonzero coeffs
|
|
}
|
|
}
|
|
d->eob = eob + 1;
|
|
}
|
|
|
|
#endif
|
|
|
|
#ifdef EXACT_QUANT
|
|
void vp8_regular_quantize_b(BLOCK *b, BLOCKD *d)
|
|
{
|
|
int i, rc, eob;
|
|
int zbin;
|
|
int x, y, z, sz;
|
|
short *zbin_boost_ptr = b->zrun_zbin_boost;
|
|
short *coeff_ptr = b->coeff;
|
|
short *zbin_ptr = b->zbin;
|
|
short *round_ptr = b->round;
|
|
short *quant_ptr = b->quant;
|
|
unsigned char *quant_shift_ptr = b->quant_shift;
|
|
short *qcoeff_ptr = d->qcoeff;
|
|
short *dqcoeff_ptr = d->dqcoeff;
|
|
short *dequant_ptr = d->dequant;
|
|
short zbin_oq_value = b->zbin_extra;
|
|
|
|
vpx_memset(qcoeff_ptr, 0, 32);
|
|
vpx_memset(dqcoeff_ptr, 0, 32);
|
|
|
|
eob = -1;
|
|
|
|
for (i = 0; i < 16; i++)
|
|
{
|
|
rc = vp8_default_zig_zag1d[i];
|
|
z = coeff_ptr[rc];
|
|
|
|
zbin = zbin_ptr[rc] + *zbin_boost_ptr + zbin_oq_value;
|
|
|
|
zbin_boost_ptr ++;
|
|
sz = (z >> 31); // sign of z
|
|
x = (z ^ sz) - sz; // x = abs(z)
|
|
|
|
if (x >= zbin)
|
|
{
|
|
x += round_ptr[rc];
|
|
y = (((x * quant_ptr[rc]) >> 16) + x)
|
|
>> quant_shift_ptr[rc]; // quantize (x)
|
|
x = (y ^ sz) - sz; // get the sign back
|
|
qcoeff_ptr[rc] = x; // write to destination
|
|
dqcoeff_ptr[rc] = x * dequant_ptr[rc]; // dequantized value
|
|
|
|
if (y)
|
|
{
|
|
eob = i; // last nonzero coeffs
|
|
zbin_boost_ptr = b->zrun_zbin_boost; // reset zero runlength
|
|
}
|
|
}
|
|
}
|
|
|
|
d->eob = eob + 1;
|
|
}
|
|
|
|
/* Perform regular quantization, with unbiased rounding and no zero bin. */
|
|
void vp8_strict_quantize_b(BLOCK *b, BLOCKD *d)
|
|
{
|
|
int i;
|
|
int rc;
|
|
int eob;
|
|
int x;
|
|
int y;
|
|
int z;
|
|
int sz;
|
|
short *coeff_ptr;
|
|
short *quant_ptr;
|
|
unsigned char *quant_shift_ptr;
|
|
short *qcoeff_ptr;
|
|
short *dqcoeff_ptr;
|
|
short *dequant_ptr;
|
|
|
|
coeff_ptr = b->coeff;
|
|
quant_ptr = b->quant;
|
|
quant_shift_ptr = b->quant_shift;
|
|
qcoeff_ptr = d->qcoeff;
|
|
dqcoeff_ptr = d->dqcoeff;
|
|
dequant_ptr = d->dequant;
|
|
eob = - 1;
|
|
vpx_memset(qcoeff_ptr, 0, 32);
|
|
vpx_memset(dqcoeff_ptr, 0, 32);
|
|
for (i = 0; i < 16; i++)
|
|
{
|
|
int dq;
|
|
int round;
|
|
|
|
/*TODO: These arrays should be stored in zig-zag order.*/
|
|
rc = vp8_default_zig_zag1d[i];
|
|
z = coeff_ptr[rc];
|
|
dq = dequant_ptr[rc];
|
|
round = dq >> 1;
|
|
/* Sign of z. */
|
|
sz = -(z < 0);
|
|
x = (z + sz) ^ sz;
|
|
x += round;
|
|
if (x >= dq)
|
|
{
|
|
/* Quantize x. */
|
|
y = (((x * quant_ptr[rc]) >> 16) + x) >> quant_shift_ptr[rc];
|
|
/* Put the sign back. */
|
|
x = (y + sz) ^ sz;
|
|
/* Save the coefficient and its dequantized value. */
|
|
qcoeff_ptr[rc] = x;
|
|
dqcoeff_ptr[rc] = x * dq;
|
|
/* Remember the last non-zero coefficient. */
|
|
if (y)
|
|
eob = i;
|
|
}
|
|
}
|
|
|
|
d->eob = eob + 1;
|
|
}
|
|
|
|
#else
|
|
|
|
void vp8_regular_quantize_b(BLOCK *b, BLOCKD *d)
|
|
{
|
|
int i, rc, eob;
|
|
int zbin;
|
|
int x, y, z, sz;
|
|
short *zbin_boost_ptr = b->zrun_zbin_boost;
|
|
short *coeff_ptr = b->coeff;
|
|
short *zbin_ptr = b->zbin;
|
|
short *round_ptr = b->round;
|
|
short *quant_ptr = b->quant;
|
|
short *qcoeff_ptr = d->qcoeff;
|
|
short *dqcoeff_ptr = d->dqcoeff;
|
|
short *dequant_ptr = d->dequant;
|
|
short zbin_oq_value = b->zbin_extra;
|
|
|
|
vpx_memset(qcoeff_ptr, 0, 32);
|
|
vpx_memset(dqcoeff_ptr, 0, 32);
|
|
|
|
eob = -1;
|
|
|
|
for (i = 0; i < 16; i++)
|
|
{
|
|
rc = vp8_default_zig_zag1d[i];
|
|
z = coeff_ptr[rc];
|
|
|
|
//if ( i == 0 )
|
|
// zbin = zbin_ptr[rc] + *zbin_boost_ptr + zbin_oq_value/2;
|
|
//else
|
|
zbin = zbin_ptr[rc] + *zbin_boost_ptr + zbin_oq_value;
|
|
|
|
zbin_boost_ptr ++;
|
|
sz = (z >> 31); // sign of z
|
|
x = (z ^ sz) - sz; // x = abs(z)
|
|
|
|
if (x >= zbin)
|
|
{
|
|
y = ((x + round_ptr[rc]) * quant_ptr[rc]) >> 16; // quantize (x)
|
|
x = (y ^ sz) - sz; // get the sign back
|
|
qcoeff_ptr[rc] = x; // write to destination
|
|
dqcoeff_ptr[rc] = x * dequant_ptr[rc]; // dequantized value
|
|
|
|
if (y)
|
|
{
|
|
eob = i; // last nonzero coeffs
|
|
zbin_boost_ptr = &b->zrun_zbin_boost[0]; // reset zero runlength
|
|
}
|
|
}
|
|
}
|
|
|
|
d->eob = eob + 1;
|
|
}
|
|
|
|
#endif
|
|
|
|
void vp8_quantize_mby(MACROBLOCK *x)
|
|
{
|
|
int i;
|
|
int has_2nd_order = (x->e_mbd.mode_info_context->mbmi.mode != B_PRED
|
|
&& x->e_mbd.mode_info_context->mbmi.mode != SPLITMV);
|
|
|
|
for (i = 0; i < 16; i++)
|
|
x->quantize_b(&x->block[i], &x->e_mbd.block[i]);
|
|
|
|
if(has_2nd_order)
|
|
x->quantize_b(&x->block[24], &x->e_mbd.block[24]);
|
|
}
|
|
|
|
void vp8_quantize_mb(MACROBLOCK *x)
|
|
{
|
|
int i;
|
|
int has_2nd_order=(x->e_mbd.mode_info_context->mbmi.mode != B_PRED
|
|
&& x->e_mbd.mode_info_context->mbmi.mode != SPLITMV);
|
|
|
|
for (i = 0; i < 24+has_2nd_order; i++)
|
|
x->quantize_b(&x->block[i], &x->e_mbd.block[i]);
|
|
}
|
|
|
|
|
|
void vp8_quantize_mbuv(MACROBLOCK *x)
|
|
{
|
|
int i;
|
|
|
|
for (i = 16; i < 24; i++)
|
|
x->quantize_b(&x->block[i], &x->e_mbd.block[i]);
|
|
}
|
|
|
|
|
|
static const int qrounding_factors[129] =
|
|
{
|
|
48, 48, 48, 48, 48, 48, 48, 48,
|
|
48, 48, 48, 48, 48, 48, 48, 48,
|
|
48, 48, 48, 48, 48, 48, 48, 48,
|
|
48, 48, 48, 48, 48, 48, 48, 48,
|
|
48, 48, 48, 48, 48, 48, 48, 48,
|
|
48, 48, 48, 48, 48, 48, 48, 48,
|
|
48, 48, 48, 48, 48, 48, 48, 48,
|
|
48, 48, 48, 48, 48, 48, 48, 48,
|
|
48, 48, 48, 48, 48, 48, 48, 48,
|
|
48, 48, 48, 48, 48, 48, 48, 48,
|
|
48, 48, 48, 48, 48, 48, 48, 48,
|
|
48, 48, 48, 48, 48, 48, 48, 48,
|
|
48, 48, 48, 48, 48, 48, 48, 48,
|
|
48, 48, 48, 48, 48, 48, 48, 48,
|
|
48, 48, 48, 48, 48, 48, 48, 48,
|
|
48, 48, 48, 48, 48, 48, 48, 48,
|
|
48
|
|
};
|
|
|
|
|
|
static const int qzbin_factors[129] =
|
|
{
|
|
84, 84, 84, 84, 84, 84, 84, 84,
|
|
84, 84, 84, 84, 84, 84, 84, 84,
|
|
84, 84, 84, 84, 84, 84, 84, 84,
|
|
84, 84, 84, 84, 84, 84, 84, 84,
|
|
84, 84, 84, 84, 84, 84, 84, 84,
|
|
84, 84, 84, 84, 84, 84, 84, 84,
|
|
80, 80, 80, 80, 80, 80, 80, 80,
|
|
80, 80, 80, 80, 80, 80, 80, 80,
|
|
80, 80, 80, 80, 80, 80, 80, 80,
|
|
80, 80, 80, 80, 80, 80, 80, 80,
|
|
80, 80, 80, 80, 80, 80, 80, 80,
|
|
80, 80, 80, 80, 80, 80, 80, 80,
|
|
80, 80, 80, 80, 80, 80, 80, 80,
|
|
80, 80, 80, 80, 80, 80, 80, 80,
|
|
80, 80, 80, 80, 80, 80, 80, 80,
|
|
80, 80, 80, 80, 80, 80, 80, 80,
|
|
80
|
|
};
|
|
|
|
|
|
static const int qrounding_factors_y2[129] =
|
|
{
|
|
48, 48, 48, 48, 48, 48, 48, 48,
|
|
48, 48, 48, 48, 48, 48, 48, 48,
|
|
48, 48, 48, 48, 48, 48, 48, 48,
|
|
48, 48, 48, 48, 48, 48, 48, 48,
|
|
48, 48, 48, 48, 48, 48, 48, 48,
|
|
48, 48, 48, 48, 48, 48, 48, 48,
|
|
48, 48, 48, 48, 48, 48, 48, 48,
|
|
48, 48, 48, 48, 48, 48, 48, 48,
|
|
48, 48, 48, 48, 48, 48, 48, 48,
|
|
48, 48, 48, 48, 48, 48, 48, 48,
|
|
48, 48, 48, 48, 48, 48, 48, 48,
|
|
48, 48, 48, 48, 48, 48, 48, 48,
|
|
48, 48, 48, 48, 48, 48, 48, 48,
|
|
48, 48, 48, 48, 48, 48, 48, 48,
|
|
48, 48, 48, 48, 48, 48, 48, 48,
|
|
48, 48, 48, 48, 48, 48, 48, 48,
|
|
48
|
|
};
|
|
|
|
|
|
static const int qzbin_factors_y2[129] =
|
|
{
|
|
84, 84, 84, 84, 84, 84, 84, 84,
|
|
84, 84, 84, 84, 84, 84, 84, 84,
|
|
84, 84, 84, 84, 84, 84, 84, 84,
|
|
84, 84, 84, 84, 84, 84, 84, 84,
|
|
84, 84, 84, 84, 84, 84, 84, 84,
|
|
84, 84, 84, 84, 84, 84, 84, 84,
|
|
80, 80, 80, 80, 80, 80, 80, 80,
|
|
80, 80, 80, 80, 80, 80, 80, 80,
|
|
80, 80, 80, 80, 80, 80, 80, 80,
|
|
80, 80, 80, 80, 80, 80, 80, 80,
|
|
80, 80, 80, 80, 80, 80, 80, 80,
|
|
80, 80, 80, 80, 80, 80, 80, 80,
|
|
80, 80, 80, 80, 80, 80, 80, 80,
|
|
80, 80, 80, 80, 80, 80, 80, 80,
|
|
80, 80, 80, 80, 80, 80, 80, 80,
|
|
80, 80, 80, 80, 80, 80, 80, 80,
|
|
80
|
|
};
|
|
|
|
|
|
#define EXACT_QUANT
|
|
#ifdef EXACT_QUANT
|
|
static void invert_quant(int improved_quant, short *quant,
|
|
unsigned char *shift, short d)
|
|
{
|
|
if(improved_quant)
|
|
{
|
|
unsigned t;
|
|
int l;
|
|
t = d;
|
|
for(l = 0; t > 1; l++)
|
|
t>>=1;
|
|
t = 1 + (1<<(16+l))/d;
|
|
*quant = (short)(t - (1<<16));
|
|
*shift = l;
|
|
}
|
|
else
|
|
{
|
|
*quant = (1 << 16) / d;
|
|
*shift = 0;
|
|
}
|
|
}
|
|
|
|
|
|
void vp8cx_init_quantizer(VP8_COMP *cpi)
|
|
{
|
|
int i;
|
|
int quant_val;
|
|
int Q;
|
|
|
|
int zbin_boost[16] = {0, 0, 8, 10, 12, 14, 16, 20, 24, 28, 32, 36, 40, 44, 44, 44};
|
|
|
|
for (Q = 0; Q < QINDEX_RANGE; Q++)
|
|
{
|
|
// dc values
|
|
quant_val = vp8_dc_quant(Q, cpi->common.y1dc_delta_q);
|
|
cpi->Y1quant_fast[Q][0] = (1 << 16) / quant_val;
|
|
invert_quant(cpi->sf.improved_quant, cpi->Y1quant[Q] + 0,
|
|
cpi->Y1quant_shift[Q] + 0, quant_val);
|
|
cpi->Y1zbin[Q][0] = ((qzbin_factors[Q] * quant_val) + 64) >> 7;
|
|
cpi->Y1round[Q][0] = (qrounding_factors[Q] * quant_val) >> 7;
|
|
cpi->common.Y1dequant[Q][0] = quant_val;
|
|
cpi->zrun_zbin_boost_y1[Q][0] = (quant_val * zbin_boost[0]) >> 7;
|
|
|
|
quant_val = vp8_dc2quant(Q, cpi->common.y2dc_delta_q);
|
|
cpi->Y2quant_fast[Q][0] = (1 << 16) / quant_val;
|
|
invert_quant(cpi->sf.improved_quant, cpi->Y2quant[Q] + 0,
|
|
cpi->Y2quant_shift[Q] + 0, quant_val);
|
|
cpi->Y2zbin[Q][0] = ((qzbin_factors_y2[Q] * quant_val) + 64) >> 7;
|
|
cpi->Y2round[Q][0] = (qrounding_factors_y2[Q] * quant_val) >> 7;
|
|
cpi->common.Y2dequant[Q][0] = quant_val;
|
|
cpi->zrun_zbin_boost_y2[Q][0] = (quant_val * zbin_boost[0]) >> 7;
|
|
|
|
quant_val = vp8_dc_uv_quant(Q, cpi->common.uvdc_delta_q);
|
|
cpi->UVquant_fast[Q][0] = (1 << 16) / quant_val;
|
|
invert_quant(cpi->sf.improved_quant, cpi->UVquant[Q] + 0,
|
|
cpi->UVquant_shift[Q] + 0, quant_val);
|
|
cpi->UVzbin[Q][0] = ((qzbin_factors[Q] * quant_val) + 64) >> 7;;
|
|
cpi->UVround[Q][0] = (qrounding_factors[Q] * quant_val) >> 7;
|
|
cpi->common.UVdequant[Q][0] = quant_val;
|
|
cpi->zrun_zbin_boost_uv[Q][0] = (quant_val * zbin_boost[0]) >> 7;
|
|
|
|
// all the ac values = ;
|
|
for (i = 1; i < 16; i++)
|
|
{
|
|
int rc = vp8_default_zig_zag1d[i];
|
|
|
|
quant_val = vp8_ac_yquant(Q);
|
|
cpi->Y1quant_fast[Q][rc] = (1 << 16) / quant_val;
|
|
invert_quant(cpi->sf.improved_quant, cpi->Y1quant[Q] + rc,
|
|
cpi->Y1quant_shift[Q] + rc, quant_val);
|
|
cpi->Y1zbin[Q][rc] = ((qzbin_factors[Q] * quant_val) + 64) >> 7;
|
|
cpi->Y1round[Q][rc] = (qrounding_factors[Q] * quant_val) >> 7;
|
|
cpi->common.Y1dequant[Q][rc] = quant_val;
|
|
cpi->zrun_zbin_boost_y1[Q][i] = (quant_val * zbin_boost[i]) >> 7;
|
|
|
|
quant_val = vp8_ac2quant(Q, cpi->common.y2ac_delta_q);
|
|
cpi->Y2quant_fast[Q][rc] = (1 << 16) / quant_val;
|
|
invert_quant(cpi->sf.improved_quant, cpi->Y2quant[Q] + rc,
|
|
cpi->Y2quant_shift[Q] + rc, quant_val);
|
|
cpi->Y2zbin[Q][rc] = ((qzbin_factors_y2[Q] * quant_val) + 64) >> 7;
|
|
cpi->Y2round[Q][rc] = (qrounding_factors_y2[Q] * quant_val) >> 7;
|
|
cpi->common.Y2dequant[Q][rc] = quant_val;
|
|
cpi->zrun_zbin_boost_y2[Q][i] = (quant_val * zbin_boost[i]) >> 7;
|
|
|
|
quant_val = vp8_ac_uv_quant(Q, cpi->common.uvac_delta_q);
|
|
cpi->UVquant_fast[Q][rc] = (1 << 16) / quant_val;
|
|
invert_quant(cpi->sf.improved_quant, cpi->UVquant[Q] + rc,
|
|
cpi->UVquant_shift[Q] + rc, quant_val);
|
|
cpi->UVzbin[Q][rc] = ((qzbin_factors[Q] * quant_val) + 64) >> 7;
|
|
cpi->UVround[Q][rc] = (qrounding_factors[Q] * quant_val) >> 7;
|
|
cpi->common.UVdequant[Q][rc] = quant_val;
|
|
cpi->zrun_zbin_boost_uv[Q][i] = (quant_val * zbin_boost[i]) >> 7;
|
|
}
|
|
}
|
|
}
|
|
#else
|
|
void vp8cx_init_quantizer(VP8_COMP *cpi)
|
|
{
|
|
int i;
|
|
int quant_val;
|
|
int Q;
|
|
|
|
int zbin_boost[16] = {0, 0, 8, 10, 12, 14, 16, 20, 24, 28, 32, 36, 40, 44, 44, 44};
|
|
|
|
for (Q = 0; Q < QINDEX_RANGE; Q++)
|
|
{
|
|
// dc values
|
|
quant_val = vp8_dc_quant(Q, cpi->common.y1dc_delta_q);
|
|
cpi->Y1quant[Q][0] = (1 << 16) / quant_val;
|
|
cpi->Y1zbin[Q][0] = ((qzbin_factors[Q] * quant_val) + 64) >> 7;
|
|
cpi->Y1round[Q][0] = (qrounding_factors[Q] * quant_val) >> 7;
|
|
cpi->common.Y1dequant[Q][0] = quant_val;
|
|
cpi->zrun_zbin_boost_y1[Q][0] = (quant_val * zbin_boost[0]) >> 7;
|
|
|
|
quant_val = vp8_dc2quant(Q, cpi->common.y2dc_delta_q);
|
|
cpi->Y2quant[Q][0] = (1 << 16) / quant_val;
|
|
cpi->Y2zbin[Q][0] = ((qzbin_factors_y2[Q] * quant_val) + 64) >> 7;
|
|
cpi->Y2round[Q][0] = (qrounding_factors_y2[Q] * quant_val) >> 7;
|
|
cpi->common.Y2dequant[Q][0] = quant_val;
|
|
cpi->zrun_zbin_boost_y2[Q][0] = (quant_val * zbin_boost[0]) >> 7;
|
|
|
|
quant_val = vp8_dc_uv_quant(Q, cpi->common.uvdc_delta_q);
|
|
cpi->UVquant[Q][0] = (1 << 16) / quant_val;
|
|
cpi->UVzbin[Q][0] = ((qzbin_factors[Q] * quant_val) + 64) >> 7;;
|
|
cpi->UVround[Q][0] = (qrounding_factors[Q] * quant_val) >> 7;
|
|
cpi->common.UVdequant[Q][0] = quant_val;
|
|
cpi->zrun_zbin_boost_uv[Q][0] = (quant_val * zbin_boost[0]) >> 7;
|
|
|
|
// all the ac values = ;
|
|
for (i = 1; i < 16; i++)
|
|
{
|
|
int rc = vp8_default_zig_zag1d[i];
|
|
|
|
quant_val = vp8_ac_yquant(Q);
|
|
cpi->Y1quant[Q][rc] = (1 << 16) / quant_val;
|
|
cpi->Y1zbin[Q][rc] = ((qzbin_factors[Q] * quant_val) + 64) >> 7;
|
|
cpi->Y1round[Q][rc] = (qrounding_factors[Q] * quant_val) >> 7;
|
|
cpi->common.Y1dequant[Q][rc] = quant_val;
|
|
cpi->zrun_zbin_boost_y1[Q][i] = (quant_val * zbin_boost[i]) >> 7;
|
|
|
|
quant_val = vp8_ac2quant(Q, cpi->common.y2ac_delta_q);
|
|
cpi->Y2quant[Q][rc] = (1 << 16) / quant_val;
|
|
cpi->Y2zbin[Q][rc] = ((qzbin_factors_y2[Q] * quant_val) + 64) >> 7;
|
|
cpi->Y2round[Q][rc] = (qrounding_factors_y2[Q] * quant_val) >> 7;
|
|
cpi->common.Y2dequant[Q][rc] = quant_val;
|
|
cpi->zrun_zbin_boost_y2[Q][i] = (quant_val * zbin_boost[i]) >> 7;
|
|
|
|
quant_val = vp8_ac_uv_quant(Q, cpi->common.uvac_delta_q);
|
|
cpi->UVquant[Q][rc] = (1 << 16) / quant_val;
|
|
cpi->UVzbin[Q][rc] = ((qzbin_factors[Q] * quant_val) + 64) >> 7;
|
|
cpi->UVround[Q][rc] = (qrounding_factors[Q] * quant_val) >> 7;
|
|
cpi->common.UVdequant[Q][rc] = quant_val;
|
|
cpi->zrun_zbin_boost_uv[Q][i] = (quant_val * zbin_boost[i]) >> 7;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
|
|
void vp8cx_mb_init_quantizer(VP8_COMP *cpi, MACROBLOCK *x)
|
|
{
|
|
int i;
|
|
int QIndex;
|
|
MACROBLOCKD *xd = &x->e_mbd;
|
|
int zbin_extra;
|
|
|
|
// Select the baseline MB Q index.
|
|
if (xd->segmentation_enabled)
|
|
{
|
|
// Abs Value
|
|
if (xd->mb_segement_abs_delta == SEGMENT_ABSDATA)
|
|
|
|
QIndex = xd->segment_feature_data[MB_LVL_ALT_Q][xd->mode_info_context->mbmi.segment_id];
|
|
// Delta Value
|
|
else
|
|
{
|
|
QIndex = cpi->common.base_qindex + xd->segment_feature_data[MB_LVL_ALT_Q][xd->mode_info_context->mbmi.segment_id];
|
|
QIndex = (QIndex >= 0) ? ((QIndex <= MAXQ) ? QIndex : MAXQ) : 0; // Clamp to valid range
|
|
}
|
|
}
|
|
else
|
|
QIndex = cpi->common.base_qindex;
|
|
|
|
// Y
|
|
zbin_extra = ( cpi->common.Y1dequant[QIndex][1] *
|
|
( cpi->zbin_over_quant +
|
|
cpi->zbin_mode_boost +
|
|
x->act_zbin_adj ) ) >> 7;
|
|
|
|
for (i = 0; i < 16; i++)
|
|
{
|
|
x->block[i].quant = cpi->Y1quant[QIndex];
|
|
x->block[i].quant_fast = cpi->Y1quant_fast[QIndex];
|
|
x->block[i].quant_shift = cpi->Y1quant_shift[QIndex];
|
|
x->block[i].zbin = cpi->Y1zbin[QIndex];
|
|
x->block[i].round = cpi->Y1round[QIndex];
|
|
x->e_mbd.block[i].dequant = cpi->common.Y1dequant[QIndex];
|
|
x->block[i].zrun_zbin_boost = cpi->zrun_zbin_boost_y1[QIndex];
|
|
x->block[i].zbin_extra = (short)zbin_extra;
|
|
}
|
|
|
|
// UV
|
|
zbin_extra = ( cpi->common.UVdequant[QIndex][1] *
|
|
( cpi->zbin_over_quant +
|
|
cpi->zbin_mode_boost +
|
|
x->act_zbin_adj ) ) >> 7;
|
|
|
|
for (i = 16; i < 24; i++)
|
|
{
|
|
x->block[i].quant = cpi->UVquant[QIndex];
|
|
x->block[i].quant_fast = cpi->UVquant_fast[QIndex];
|
|
x->block[i].quant_shift = cpi->UVquant_shift[QIndex];
|
|
x->block[i].zbin = cpi->UVzbin[QIndex];
|
|
x->block[i].round = cpi->UVround[QIndex];
|
|
x->e_mbd.block[i].dequant = cpi->common.UVdequant[QIndex];
|
|
x->block[i].zrun_zbin_boost = cpi->zrun_zbin_boost_uv[QIndex];
|
|
x->block[i].zbin_extra = (short)zbin_extra;
|
|
}
|
|
|
|
// Y2
|
|
zbin_extra = ( cpi->common.Y2dequant[QIndex][1] *
|
|
( (cpi->zbin_over_quant / 2) +
|
|
cpi->zbin_mode_boost +
|
|
x->act_zbin_adj ) ) >> 7;
|
|
|
|
x->block[24].quant_fast = cpi->Y2quant_fast[QIndex];
|
|
x->block[24].quant = cpi->Y2quant[QIndex];
|
|
x->block[24].quant_shift = cpi->Y2quant_shift[QIndex];
|
|
x->block[24].zbin = cpi->Y2zbin[QIndex];
|
|
x->block[24].round = cpi->Y2round[QIndex];
|
|
x->e_mbd.block[24].dequant = cpi->common.Y2dequant[QIndex];
|
|
x->block[24].zrun_zbin_boost = cpi->zrun_zbin_boost_y2[QIndex];
|
|
x->block[24].zbin_extra = (short)zbin_extra;
|
|
|
|
/* save this macroblock QIndex for vp8_update_zbin_extra() */
|
|
x->q_index = QIndex;
|
|
}
|
|
|
|
|
|
void vp8_update_zbin_extra(VP8_COMP *cpi, MACROBLOCK *x)
|
|
{
|
|
int i;
|
|
int QIndex = x->q_index;
|
|
int zbin_extra;
|
|
|
|
// Y
|
|
zbin_extra = ( cpi->common.Y1dequant[QIndex][1] *
|
|
( cpi->zbin_over_quant +
|
|
cpi->zbin_mode_boost +
|
|
x->act_zbin_adj ) ) >> 7;
|
|
for (i = 0; i < 16; i++)
|
|
{
|
|
x->block[i].zbin_extra = (short)zbin_extra;
|
|
}
|
|
|
|
// UV
|
|
zbin_extra = ( cpi->common.UVdequant[QIndex][1] *
|
|
( cpi->zbin_over_quant +
|
|
cpi->zbin_mode_boost +
|
|
x->act_zbin_adj ) ) >> 7;
|
|
|
|
for (i = 16; i < 24; i++)
|
|
{
|
|
x->block[i].zbin_extra = (short)zbin_extra;
|
|
}
|
|
|
|
// Y2
|
|
zbin_extra = ( cpi->common.Y2dequant[QIndex][1] *
|
|
( (cpi->zbin_over_quant / 2) +
|
|
cpi->zbin_mode_boost +
|
|
x->act_zbin_adj ) ) >> 7;
|
|
|
|
x->block[24].zbin_extra = (short)zbin_extra;
|
|
}
|
|
|
|
|
|
void vp8cx_frame_init_quantizer(VP8_COMP *cpi)
|
|
{
|
|
// Clear Zbin mode boost for default case
|
|
cpi->zbin_mode_boost = 0;
|
|
|
|
// MB level quantizer setup
|
|
vp8cx_mb_init_quantizer(cpi, &cpi->mb);
|
|
}
|
|
|
|
|
|
void vp8_set_quantizer(struct VP8_COMP *cpi, int Q)
|
|
{
|
|
VP8_COMMON *cm = &cpi->common;
|
|
MACROBLOCKD *mbd = &cpi->mb.e_mbd;
|
|
int update = 0;
|
|
int new_delta_q;
|
|
cm->base_qindex = Q;
|
|
|
|
/* if any of the delta_q values are changing update flag has to be set */
|
|
/* currently only y2dc_delta_q may change */
|
|
|
|
cm->y1dc_delta_q = 0;
|
|
cm->y2ac_delta_q = 0;
|
|
cm->uvdc_delta_q = 0;
|
|
cm->uvac_delta_q = 0;
|
|
|
|
if (Q < 4)
|
|
{
|
|
new_delta_q = 4-Q;
|
|
}
|
|
else
|
|
new_delta_q = 0;
|
|
|
|
update |= cm->y2dc_delta_q != new_delta_q;
|
|
cm->y2dc_delta_q = new_delta_q;
|
|
|
|
|
|
// Set Segment specific quatizers
|
|
mbd->segment_feature_data[MB_LVL_ALT_Q][0] = cpi->segment_feature_data[MB_LVL_ALT_Q][0];
|
|
mbd->segment_feature_data[MB_LVL_ALT_Q][1] = cpi->segment_feature_data[MB_LVL_ALT_Q][1];
|
|
mbd->segment_feature_data[MB_LVL_ALT_Q][2] = cpi->segment_feature_data[MB_LVL_ALT_Q][2];
|
|
mbd->segment_feature_data[MB_LVL_ALT_Q][3] = cpi->segment_feature_data[MB_LVL_ALT_Q][3];
|
|
|
|
/* quantizer has to be reinitialized for any delta_q changes */
|
|
if(update)
|
|
vp8cx_init_quantizer(cpi);
|
|
|
|
}
|