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Gunnar Sletta authored
Task-number: QTBUG-31078 Change-Id: Id7221db752c06fc94e55ae859615abb2642a139b Reviewed-by:Friedemann Kleint <Friedemann.Kleint@digia.com>
2697a818
/* * 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"#include "vp8/common/seg_common.h"#ifdef ENC_DEBUGextern int enc_debug;#endifvoid vp9_ht_quantize_b_4x4(BLOCK *b, BLOCKD *d, TX_TYPE tx_type) { 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; int const *pt_scan ; switch (tx_type) { case ADST_DCT : pt_scan = vp8_row_scan; break; case DCT_ADST : pt_scan = vp8_col_scan; break; default : pt_scan = vp8_default_zig_zag1d; break; } vpx_memset(qcoeff_ptr, 0, 32); vpx_memset(dqcoeff_ptr, 0, 32); eob = -1; for (i = 0; i < b->eob_max_offset; i++) { rc = pt_scan[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) {7172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140
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;
}
void vp9_regular_quantize_b_4x4(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 < b->eob_max_offset; 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;
}
void vp9_quantize_mby_4x4_c(MACROBLOCK *x) {
int i;
int has_2nd_order = x->e_mbd.mode_info_context->mbmi.mode != SPLITMV;
141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210
for (i = 0; i < 16; i++)
x->quantize_b_4x4(&x->block[i], &x->e_mbd.block[i]);
if (has_2nd_order)
x->quantize_b_4x4(&x->block[24], &x->e_mbd.block[24]);
}
void vp9_quantize_mbuv_4x4_c(MACROBLOCK *x) {
int i;
for (i = 16; i < 24; i++)
x->quantize_b_4x4(&x->block[i], &x->e_mbd.block[i]);
}
void vp9_quantize_mb_4x4_c(MACROBLOCK *x) {
vp9_quantize_mby_4x4_c(x);
vp9_quantize_mbuv_4x4_c(x);
}
void vp9_regular_quantize_b_2x2(BLOCK *b, BLOCKD *d) {
int i, rc, eob;
int zbin;
int x, y, z, sz;
short *zbin_boost_ptr = b->zrun_zbin_boost;
int zbin_zrun_index = 0;
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;
// double q2nd = 4;
vpx_memset(qcoeff_ptr, 0, 32);
vpx_memset(dqcoeff_ptr, 0, 32);
eob = -1;
for (i = 0; i < b->eob_max_offset_8x8; i++) {
rc = vp8_default_zig_zag1d[i];
z = coeff_ptr[rc];
zbin_boost_ptr = &b->zrun_zbin_boost[zbin_zrun_index];
zbin_zrun_index += 4;
zbin = (zbin_ptr[rc] + *zbin_boost_ptr + zbin_oq_value);
sz = (z >> 31); // sign of z
x = (z ^ sz) - sz; // x = abs(z)
if (x >= zbin) {
x += (round_ptr[rc]);
y = ((int)((int)(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_zrun_index = 0;
}
}
}
d->eob = eob + 1;
}
void vp9_regular_quantize_b_8x8(BLOCK *b, BLOCKD *d) {
211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280
int i, rc, eob;
int zbin;
int x, y, z, sz;
short *zbin_boost_ptr = b->zrun_zbin_boost_8x8;
short *coeff_ptr = b->coeff;
short *zbin_ptr = b->zbin_8x8;
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, 64 * sizeof(short));
vpx_memset(dqcoeff_ptr, 0, 64 * sizeof(short));
eob = -1;
for (i = 0; i < b->eob_max_offset_8x8; i++) {
rc = vp8_default_zig_zag1d_8x8[i];
z = coeff_ptr[rc];
zbin = (zbin_ptr[rc != 0] + *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 != 0]);
y = ((int)(((int)(x * quant_ptr[rc != 0]) >> 16) + x))
>> quant_shift_ptr[rc != 0]; // quantize (x)
x = (y ^ sz) - sz; // get the sign back
qcoeff_ptr[rc] = x; // write to destination
dqcoeff_ptr[rc] = x * dequant_ptr[rc != 0]; // dequantized value
if (y) {
eob = i; // last nonzero coeffs
zbin_boost_ptr = b->zrun_zbin_boost_8x8;
}
}
}
d->eob = eob + 1;
}
void vp9_quantize_mby_8x8(MACROBLOCK *x) {
int i;
int has_2nd_order = x->e_mbd.mode_info_context->mbmi.mode != SPLITMV;
for (i = 0; i < 16; i ++) {
x->e_mbd.block[i].eob = 0;
}
x->e_mbd.block[24].eob = 0;
for (i = 0; i < 16; i += 4)
x->quantize_b_8x8(&x->block[i], &x->e_mbd.block[i]);
if (has_2nd_order)
x->quantize_b_2x2(&x->block[24], &x->e_mbd.block[24]);
}
void vp9_quantize_mbuv_8x8(MACROBLOCK *x) {
int i;
for (i = 16; i < 24; i ++)
x->e_mbd.block[i].eob = 0;
for (i = 16; i < 24; i += 4)
x->quantize_b_8x8(&x->block[i], &x->e_mbd.block[i]);
}
281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350
void vp9_quantize_mb_8x8(MACROBLOCK *x) {
vp9_quantize_mby_8x8(x);
vp9_quantize_mbuv_8x8(x);
}
void vp9_quantize_mby_16x16(MACROBLOCK *x) {
int i;
for (i = 0; i < 16; i++)
x->e_mbd.block[i].eob = 0;
x->e_mbd.block[24].eob = 0;
x->quantize_b_16x16(&x->block[0], &x->e_mbd.block[0]);
}
void vp9_quantize_mb_16x16(MACROBLOCK *x) {
vp9_quantize_mby_16x16(x);
vp9_quantize_mbuv_8x8(x);
}
void vp9_regular_quantize_b_16x16(BLOCK *b, BLOCKD *d) {
int i, rc, eob;
int zbin;
int x, y, z, sz;
short *zbin_boost_ptr = b->zrun_zbin_boost_16x16;
short *coeff_ptr = b->coeff;
short *zbin_ptr = b->zbin_16x16;
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, 256*sizeof(short));
vpx_memset(dqcoeff_ptr, 0, 256*sizeof(short));
eob = -1;
for (i = 0; i < b->eob_max_offset_16x16; i++) {
rc = vp8_default_zig_zag1d_16x16[i];
z = coeff_ptr[rc];
zbin = (zbin_ptr[rc!=0] + *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!=0]);
y = ((int)(((int)(x * quant_ptr[rc!=0]) >> 16) + x))
>> quant_shift_ptr[rc!=0]; // quantize (x)
x = (y ^ sz) - sz; // get the sign back
qcoeff_ptr[rc] = x; // write to destination
dqcoeff_ptr[rc] = x * dequant_ptr[rc!=0]; // dequantized value
if (y) {
eob = i; // last nonzero coeffs
zbin_boost_ptr = b->zrun_zbin_boost_16x16;
}
}
}
d->eob = eob + 1;
}
/* quantize_b_pair function pointer in MACROBLOCK structure is set to one of
* these two C functions if corresponding optimized routine is not available.
* NEON optimized version implements currently the fast quantization for pair
351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420
* of blocks. */
void vp9_regular_quantize_b_4x4_pair(BLOCK *b1, BLOCK *b2, BLOCKD *d1, BLOCKD *d2) {
vp9_regular_quantize_b_4x4(b1, d1);
vp9_regular_quantize_b_4x4(b2, d2);
}
static void invert_quant(short *quant,
unsigned char *shift, short d) {
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;
}
void vp9cx_init_quantizer(VP8_COMP *cpi) {
int i;
int quant_val;
int Q;
static const int zbin_boost[16] = { 0, 0, 8, 10, 12, 14, 16, 20,
24, 28, 32, 36, 40, 44, 44, 44
};
static const int zbin_boost_8x8[64] = { 0, 0, 0, 8, 8, 8, 10, 12,
14, 16, 18, 20, 22, 24, 26, 28,
30, 32, 34, 36, 38, 40, 42, 44,
46, 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 zbin_boost_16x16[256] = {
0, 0, 0, 8, 8, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28,
30, 32, 34, 36, 38, 40, 42, 44, 46, 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, 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,
};
int qrounding_factor = 48;
for (Q = 0; Q < QINDEX_RANGE; Q++) {
int qzbin_factor = (vp8_dc_quant(Q, 0) < 148) ? 84 : 80;
#if CONFIG_LOSSLESS
if (cpi->oxcf.lossless) {
if (Q == 0) {
qzbin_factor = 64;
qrounding_factor = 64;
}
}
#endif
// dc values
quant_val = vp8_dc_quant(Q, cpi->common.y1dc_delta_q);
421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490
invert_quant(cpi->Y1quant[Q] + 0,
cpi->Y1quant_shift[Q] + 0, quant_val);
cpi->Y1zbin[Q][0] = ((qzbin_factor * quant_val) + 64) >> 7;
cpi->Y1zbin_8x8[Q][0] = ((qzbin_factor * quant_val) + 64) >> 7;
cpi->Y1zbin_16x16[Q][0] = ((qzbin_factor * quant_val) + 64) >> 7;
cpi->Y1round[Q][0] = (qrounding_factor * quant_val) >> 7;
cpi->common.Y1dequant[Q][0] = quant_val;
cpi->zrun_zbin_boost_y1[Q][0] = (quant_val * zbin_boost[0]) >> 7;
cpi->zrun_zbin_boost_y1_8x8[Q][0] =
((quant_val * zbin_boost_8x8[0]) + 64) >> 7;
cpi->zrun_zbin_boost_y1_16x16[Q][0] = ((quant_val * zbin_boost_16x16[0]) + 64) >> 7;
quant_val = vp8_dc2quant(Q, cpi->common.y2dc_delta_q);
invert_quant(cpi->Y2quant[Q] + 0,
cpi->Y2quant_shift[Q] + 0, quant_val);
cpi->Y2zbin[Q][0] = ((qzbin_factor * quant_val) + 64) >> 7;
cpi->Y2zbin_8x8[Q][0] = ((qzbin_factor * quant_val) + 64) >> 7;
cpi->Y2zbin_16x16[Q][0] = ((qzbin_factor * quant_val) + 64) >> 7;
cpi->Y2round[Q][0] = (qrounding_factor * quant_val) >> 7;
cpi->common.Y2dequant[Q][0] = quant_val;
cpi->zrun_zbin_boost_y2[Q][0] = (quant_val * zbin_boost[0]) >> 7;
cpi->zrun_zbin_boost_y2_8x8[Q][0] =
((quant_val * zbin_boost_8x8[0]) + 64) >> 7;
cpi->zrun_zbin_boost_y2_16x16[Q][0] = ((quant_val * zbin_boost_16x16[0]) + 64) >> 7;
quant_val = vp8_dc_uv_quant(Q, cpi->common.uvdc_delta_q);
invert_quant(cpi->UVquant[Q] + 0,
cpi->UVquant_shift[Q] + 0, quant_val);
cpi->UVzbin[Q][0] = ((qzbin_factor * quant_val) + 64) >> 7;
cpi->UVzbin_8x8[Q][0] = ((qzbin_factor * quant_val) + 64) >> 7;
cpi->UVzbin_16x16[Q][0] = ((qzbin_factor * quant_val) + 64) >> 7;
cpi->UVround[Q][0] = (qrounding_factor * quant_val) >> 7;
cpi->common.UVdequant[Q][0] = quant_val;
cpi->zrun_zbin_boost_uv[Q][0] = (quant_val * zbin_boost[0]) >> 7;
cpi->zrun_zbin_boost_uv_8x8[Q][0] =
((quant_val * zbin_boost_8x8[0]) + 64) >> 7;
cpi->zrun_zbin_boost_uv_16x16[Q][0] = ((quant_val * zbin_boost_16x16[0]) + 64) >> 7;
// all the 4x4 ac values =;
for (i = 1; i < 16; i++) {
int rc = vp8_default_zig_zag1d[i];
quant_val = vp8_ac_yquant(Q);
invert_quant(cpi->Y1quant[Q] + rc,
cpi->Y1quant_shift[Q] + rc, quant_val);
cpi->Y1zbin[Q][rc] = ((qzbin_factor * quant_val) + 64) >> 7;
cpi->Y1round[Q][rc] = (qrounding_factor * quant_val) >> 7;
cpi->common.Y1dequant[Q][rc] = quant_val;
cpi->zrun_zbin_boost_y1[Q][i] =
((quant_val * zbin_boost[i]) + 64) >> 7;
quant_val = vp8_ac2quant(Q, cpi->common.y2ac_delta_q);
invert_quant(cpi->Y2quant[Q] + rc,
cpi->Y2quant_shift[Q] + rc, quant_val);
cpi->Y2zbin[Q][rc] = ((qzbin_factor * quant_val) + 64) >> 7;
cpi->Y2round[Q][rc] = (qrounding_factor * quant_val) >> 7;
cpi->common.Y2dequant[Q][rc] = quant_val;
cpi->zrun_zbin_boost_y2[Q][i] =
((quant_val * zbin_boost[i]) + 64) >> 7;
quant_val = vp8_ac_uv_quant(Q, cpi->common.uvac_delta_q);
invert_quant(cpi->UVquant[Q] + rc,
cpi->UVquant_shift[Q] + rc, quant_val);
cpi->UVzbin[Q][rc] = ((qzbin_factor * quant_val) + 64) >> 7;
cpi->UVround[Q][rc] = (qrounding_factor * quant_val) >> 7;
cpi->common.UVdequant[Q][rc] = quant_val;
cpi->zrun_zbin_boost_uv[Q][i] =
((quant_val * zbin_boost[i]) + 64) >> 7;
}
491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560
// 8x8 structures... only zbin seperated out for now
// This needs cleaning up for 8x8 especially if we are to add
// support for non flat Q matices
for (i = 1; i < 64; i++) {
int rc = vp8_default_zig_zag1d_8x8[i];
quant_val = vp8_ac_yquant(Q);
cpi->Y1zbin_8x8[Q][rc] = ((qzbin_factor * quant_val) + 64) >> 7;
cpi->zrun_zbin_boost_y1_8x8[Q][i] =
((quant_val * zbin_boost_8x8[i]) + 64) >> 7;
quant_val = vp8_ac2quant(Q, cpi->common.y2ac_delta_q);
cpi->Y2zbin_8x8[Q][rc] = ((qzbin_factor * quant_val) + 64) >> 7;
cpi->zrun_zbin_boost_y2_8x8[Q][i] =
((quant_val * zbin_boost_8x8[i]) + 64) >> 7;
quant_val = vp8_ac_uv_quant(Q, cpi->common.uvac_delta_q);
cpi->UVzbin_8x8[Q][rc] = ((qzbin_factor * quant_val) + 64) >> 7;
cpi->zrun_zbin_boost_uv_8x8[Q][i] =
((quant_val * zbin_boost_8x8[i]) + 64) >> 7;
}
// 16x16 structures. Same comment above applies.
for (i = 1; i < 256; i++) {
int rc = vp8_default_zig_zag1d_16x16[i];
quant_val = vp8_ac_yquant(Q);
cpi->Y1zbin_16x16[Q][rc] = ((qzbin_factor * quant_val) + 64) >> 7;
cpi->zrun_zbin_boost_y1_16x16[Q][i] = ((quant_val * zbin_boost_16x16[i]) + 64) >> 7;
quant_val = vp8_ac2quant(Q, cpi->common.y2ac_delta_q);
cpi->Y2zbin_16x16[Q][rc] = ((qzbin_factor * quant_val) + 64) >> 7;
cpi->zrun_zbin_boost_y2_16x16[Q][i] = ((quant_val * zbin_boost_16x16[i]) + 64) >> 7;
quant_val = vp8_ac_uv_quant(Q, cpi->common.uvac_delta_q);
cpi->UVzbin_16x16[Q][rc] = ((qzbin_factor * quant_val) + 64) >> 7;
cpi->zrun_zbin_boost_uv_16x16[Q][i] = ((quant_val * zbin_boost_16x16[i]) + 64) >> 7;
}
}
}
void vp9cx_mb_init_quantizer(VP8_COMP *cpi, MACROBLOCK *x) {
int i;
int QIndex;
MACROBLOCKD *xd = &x->e_mbd;
int zbin_extra;
int segment_id = xd->mode_info_context->mbmi.segment_id;
// Select the baseline MB Q index allowing for any segment level change.
if (vp9_segfeature_active(xd, segment_id, SEG_LVL_ALT_Q)) {
// Abs Value
if (xd->mb_segment_abs_delta == SEGMENT_ABSDATA)
QIndex = vp9_get_segdata(xd, segment_id, SEG_LVL_ALT_Q);
// Delta Value
else {
QIndex = cpi->common.base_qindex +
vp9_get_segdata(xd, segment_id, SEG_LVL_ALT_Q);
// Clamp to valid range
QIndex = (QIndex >= 0) ? ((QIndex <= MAXQ) ? QIndex : MAXQ) : 0;
}
} else
QIndex = cpi->common.base_qindex;
// Y
zbin_extra = (cpi->common.Y1dequant[QIndex][1] *
(cpi->zbin_over_quant +
cpi->zbin_mode_boost +
561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630
x->act_zbin_adj)) >> 7;
for (i = 0; i < 16; i++) {
x->block[i].quant = cpi->Y1quant[QIndex];
x->block[i].quant_shift = cpi->Y1quant_shift[QIndex];
x->block[i].zbin = cpi->Y1zbin[QIndex];
x->block[i].zbin_8x8 = cpi->Y1zbin_8x8[QIndex];
x->block[i].zbin_16x16 = cpi->Y1zbin_16x16[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].zrun_zbin_boost_8x8 = cpi->zrun_zbin_boost_y1_8x8[QIndex];
x->block[i].zrun_zbin_boost_16x16 = cpi->zrun_zbin_boost_y1_16x16[QIndex];
x->block[i].zbin_extra = (short)zbin_extra;
// Segment max eob offset feature.
if (vp9_segfeature_active(xd, segment_id, SEG_LVL_EOB)) {
x->block[i].eob_max_offset =
vp9_get_segdata(xd, segment_id, SEG_LVL_EOB);
x->block[i].eob_max_offset_8x8 =
vp9_get_segdata(xd, segment_id, SEG_LVL_EOB);
x->block[i].eob_max_offset_16x16 =
vp9_get_segdata(xd, segment_id, SEG_LVL_EOB);
} else {
x->block[i].eob_max_offset = 16;
x->block[i].eob_max_offset_8x8 = 64;
x->block[i].eob_max_offset_16x16 = 256;
}
}
// 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_shift = cpi->UVquant_shift[QIndex];
x->block[i].zbin = cpi->UVzbin[QIndex];
x->block[i].zbin_8x8 = cpi->UVzbin_8x8[QIndex];
x->block[i].zbin_16x16 = cpi->UVzbin_16x16[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].zrun_zbin_boost_8x8 = cpi->zrun_zbin_boost_uv_8x8[QIndex];
x->block[i].zrun_zbin_boost_16x16 = cpi->zrun_zbin_boost_uv_16x16[QIndex];
x->block[i].zbin_extra = (short)zbin_extra;
// Segment max eob offset feature.
if (vp9_segfeature_active(xd, segment_id, SEG_LVL_EOB)) {
x->block[i].eob_max_offset =
vp9_get_segdata(xd, segment_id, SEG_LVL_EOB);
x->block[i].eob_max_offset_8x8 =
vp9_get_segdata(xd, segment_id, SEG_LVL_EOB);
} else {
x->block[i].eob_max_offset = 16;
x->block[i].eob_max_offset_8x8 = 64;
}
}
// 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 = cpi->Y2quant[QIndex];
x->block[24].quant_shift = cpi->Y2quant_shift[QIndex];
631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700
x->block[24].zbin = cpi->Y2zbin[QIndex];
x->block[24].zbin_8x8 = cpi->Y2zbin_8x8[QIndex];
x->block[24].zbin_16x16 = cpi->Y2zbin_16x16[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].zrun_zbin_boost_8x8 = cpi->zrun_zbin_boost_y2_8x8[QIndex];
x->block[24].zrun_zbin_boost_16x16 = cpi->zrun_zbin_boost_y2_16x16[QIndex];
x->block[24].zbin_extra = (short)zbin_extra;
// TBD perhaps not use for Y2
// Segment max eob offset feature.
if (vp9_segfeature_active(xd, segment_id, SEG_LVL_EOB)) {
x->block[24].eob_max_offset =
vp9_get_segdata(xd, segment_id, SEG_LVL_EOB);
x->block[24].eob_max_offset_8x8 =
vp9_get_segdata(xd, segment_id, SEG_LVL_EOB);
} else {
x->block[24].eob_max_offset = 16;
x->block[24].eob_max_offset_8x8 = 4;
}
/* save this macroblock QIndex for vp9_update_zbin_extra() */
x->e_mbd.q_index = QIndex;
}
void vp9_update_zbin_extra(VP8_COMP *cpi, MACROBLOCK *x) {
int i;
int QIndex = x->e_mbd.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 vp9cx_frame_init_quantizer(VP8_COMP *cpi) {
// Clear Zbin mode boost for default case
cpi->zbin_mode_boost = 0;
// MB level quantizer setup
vp9cx_mb_init_quantizer(cpi, &cpi->mb);
}
void vp9_set_quantizer(struct VP8_COMP *cpi, int Q) {
VP8_COMMON *cm = &cpi->common;
701702703704705706707708709710711712713714715716
cm->base_qindex = Q;
// if any of the delta_q values are changing update flag will
// have to be set.
cm->y1dc_delta_q = 0;
cm->y2ac_delta_q = 0;
cm->uvdc_delta_q = 0;
cm->uvac_delta_q = 0;
cm->y2dc_delta_q = 0;
// quantizer has to be reinitialized if any delta_q changes.
// As there are not any here for now this is inactive code.
// if(update)
// vp9cx_init_quantizer(cpi);
}