769 lines
24 KiB
C
769 lines
24 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 <math.h>
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#include "vpx_mem/vpx_mem.h"
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#include "vp9/encoder/vp9_onyx_int.h"
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#include "vp9/encoder/vp9_quantize.h"
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#include "vp9/common/vp9_quant_common.h"
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#include "vp9/common/vp9_seg_common.h"
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#ifdef ENC_DEBUG
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extern int enc_debug;
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#endif
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static INLINE int plane_idx(int plane) {
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return plane == 0 ? 0 :
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plane == 1 ? 16 : 20;
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}
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void vp9_ht_quantize_b_4x4(MACROBLOCK *mb, int b_idx, TX_TYPE tx_type) {
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MACROBLOCKD *const xd = &mb->e_mbd;
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BLOCK *const b = &mb->block[0];
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BLOCKD *const d = &xd->block[0];
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int i, rc, eob;
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int zbin;
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int x, y, z, sz;
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int16_t *coeff_ptr = mb->coeff + b_idx * 16;
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// ht is luma-only
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int16_t *qcoeff_ptr = BLOCK_OFFSET(xd->plane[0].qcoeff, b_idx, 16);
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int16_t *dqcoeff_ptr = BLOCK_OFFSET(xd->plane[0].dqcoeff, b_idx, 16);
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int16_t *zbin_boost_ptr = b->zrun_zbin_boost;
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int16_t *zbin_ptr = b->zbin;
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int16_t *round_ptr = b->round;
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int16_t *quant_ptr = b->quant;
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uint8_t *quant_shift_ptr = b->quant_shift;
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int16_t *dequant_ptr = d->dequant;
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int zbin_oq_value = b->zbin_extra;
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const int *pt_scan;
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#if CONFIG_CODE_NONZEROCOUNT
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int nzc = 0;
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#endif
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switch (tx_type) {
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case ADST_DCT:
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pt_scan = vp9_row_scan_4x4;
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break;
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case DCT_ADST:
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pt_scan = vp9_col_scan_4x4;
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break;
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default:
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pt_scan = vp9_default_zig_zag1d_4x4;
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break;
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}
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vpx_memset(qcoeff_ptr, 0, 32);
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vpx_memset(dqcoeff_ptr, 0, 32);
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eob = -1;
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if (!b->skip_block) {
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for (i = 0; i < 16; i++) {
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rc = pt_scan[i];
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z = coeff_ptr[rc];
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zbin = zbin_ptr[rc] + *zbin_boost_ptr + zbin_oq_value;
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zbin_boost_ptr++;
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sz = (z >> 31); // sign of z
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x = (z ^ sz) - sz; // x = abs(z)
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if (x >= zbin) {
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x += round_ptr[rc];
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y = (((x * quant_ptr[rc]) >> 16) + x)
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>> quant_shift_ptr[rc]; // quantize (x)
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x = (y ^ sz) - sz; // get the sign back
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qcoeff_ptr[rc] = x; // write to destination
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dqcoeff_ptr[rc] = x * dequant_ptr[rc]; // dequantized value
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if (y) {
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eob = i; // last nonzero coeffs
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#if CONFIG_CODE_NONZEROCOUNT
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++nzc; // number of nonzero coeffs
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#endif
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zbin_boost_ptr = b->zrun_zbin_boost; // reset zero runlength
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}
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}
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}
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}
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xd->plane[0].eobs[b_idx] = eob + 1;
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#if CONFIG_CODE_NONZEROCOUNT
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xd->nzcs[b_idx] = nzc;
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#endif
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}
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void vp9_regular_quantize_b_4x4(MACROBLOCK *mb, int b_idx, int y_blocks) {
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MACROBLOCKD *const xd = &mb->e_mbd;
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const struct plane_block_idx pb_idx = plane_block_idx(y_blocks, b_idx);
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const int c_idx = plane_idx(pb_idx.plane);
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BLOCK *const b = &mb->block[c_idx];
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BLOCKD *const d = &xd->block[c_idx];
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int i, rc, eob;
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int zbin;
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int x, y, z, sz;
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int16_t *coeff_ptr = mb->coeff + b_idx * 16;
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int16_t *qcoeff_ptr = BLOCK_OFFSET(xd->plane[pb_idx.plane].qcoeff,
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pb_idx.block, 16);
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int16_t *dqcoeff_ptr = BLOCK_OFFSET(xd->plane[pb_idx.plane].dqcoeff,
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pb_idx.block, 16);
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int16_t *zbin_boost_ptr = b->zrun_zbin_boost;
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int16_t *zbin_ptr = b->zbin;
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int16_t *round_ptr = b->round;
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int16_t *quant_ptr = b->quant;
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uint8_t *quant_shift_ptr = b->quant_shift;
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int16_t *dequant_ptr = d->dequant;
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int zbin_oq_value = b->zbin_extra;
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#if CONFIG_CODE_NONZEROCOUNT
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int nzc = 0;
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#endif
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if (c_idx == 0) assert(pb_idx.plane == 0);
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if (c_idx == 16) assert(pb_idx.plane == 1);
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if (c_idx == 20) assert(pb_idx.plane == 2);
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vpx_memset(qcoeff_ptr, 0, 32);
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vpx_memset(dqcoeff_ptr, 0, 32);
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eob = -1;
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if (!b->skip_block) {
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for (i = 0; i < 16; i++) {
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rc = vp9_default_zig_zag1d_4x4[i];
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z = coeff_ptr[rc];
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zbin = zbin_ptr[rc] + *zbin_boost_ptr + zbin_oq_value;
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zbin_boost_ptr++;
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sz = (z >> 31); // sign of z
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x = (z ^ sz) - sz; // x = abs(z)
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if (x >= zbin) {
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x += round_ptr[rc];
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y = (((x * quant_ptr[rc]) >> 16) + x)
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>> quant_shift_ptr[rc]; // quantize (x)
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x = (y ^ sz) - sz; // get the sign back
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qcoeff_ptr[rc] = x; // write to destination
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dqcoeff_ptr[rc] = x * dequant_ptr[rc]; // dequantized value
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if (y) {
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eob = i; // last nonzero coeffs
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#if CONFIG_CODE_NONZEROCOUNT
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++nzc; // number of nonzero coeffs
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#endif
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zbin_boost_ptr = b->zrun_zbin_boost; // reset zero runlength
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}
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}
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}
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}
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xd->plane[pb_idx.plane].eobs[pb_idx.block] = eob + 1;
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#if CONFIG_CODE_NONZEROCOUNT
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xd->nzcs[b_idx] = nzc;
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#endif
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}
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void vp9_quantize_mby_4x4(MACROBLOCK *x) {
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int i;
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for (i = 0; i < 16; i++) {
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TX_TYPE tx_type = get_tx_type_4x4(&x->e_mbd, i);
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if (tx_type != DCT_DCT) {
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vp9_ht_quantize_b_4x4(x, i, tx_type);
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} else {
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x->quantize_b_4x4(x, i, 16);
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}
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}
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}
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void vp9_quantize_mbuv_4x4(MACROBLOCK *x) {
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int i;
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const MACROBLOCKD * const xd = &x->e_mbd;
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const BLOCK_SIZE_TYPE real_sb_type = xd->mode_info_context->mbmi.sb_type;
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xd->mode_info_context->mbmi.sb_type = BLOCK_SIZE_MB16X16;
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for (i = 16; i < 24; i++)
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x->quantize_b_4x4(x, i, 16);
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xd->mode_info_context->mbmi.sb_type = real_sb_type;
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}
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void vp9_quantize_mb_4x4(MACROBLOCK *x) {
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vp9_quantize_mby_4x4(x);
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vp9_quantize_mbuv_4x4(x);
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}
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void vp9_regular_quantize_b_8x8(MACROBLOCK *mb, int b_idx, TX_TYPE tx_type,
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int y_blocks) {
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MACROBLOCKD *const xd = &mb->e_mbd;
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const struct plane_block_idx pb_idx = plane_block_idx(y_blocks, b_idx);
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const int c_idx = plane_idx(pb_idx.plane);
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int16_t *qcoeff_ptr = BLOCK_OFFSET(xd->plane[pb_idx.plane].qcoeff,
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pb_idx.block, 16);
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int16_t *dqcoeff_ptr = BLOCK_OFFSET(xd->plane[pb_idx.plane].dqcoeff,
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pb_idx.block, 16);
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BLOCK *const b = &mb->block[c_idx];
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BLOCKD *const d = &xd->block[c_idx];
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const int *pt_scan;
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switch (tx_type) {
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case ADST_DCT:
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pt_scan = vp9_row_scan_8x8;
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break;
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case DCT_ADST:
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pt_scan = vp9_col_scan_8x8;
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break;
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default:
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pt_scan = vp9_default_zig_zag1d_8x8;
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break;
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}
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if (c_idx == 0) assert(pb_idx.plane == 0);
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if (c_idx == 16) assert(pb_idx.plane == 1);
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if (c_idx == 20) assert(pb_idx.plane == 2);
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vpx_memset(qcoeff_ptr, 0, 64 * sizeof(int16_t));
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vpx_memset(dqcoeff_ptr, 0, 64 * sizeof(int16_t));
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if (!b->skip_block) {
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int i, rc, eob;
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int zbin;
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int x, y, z, sz;
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int zero_run;
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int16_t *zbin_boost_ptr = b->zrun_zbin_boost;
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int16_t *coeff_ptr = mb->coeff + 16 * b_idx;
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int16_t *zbin_ptr = b->zbin;
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int16_t *round_ptr = b->round;
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int16_t *quant_ptr = b->quant;
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uint8_t *quant_shift_ptr = b->quant_shift;
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int16_t *dequant_ptr = d->dequant;
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int zbin_oq_value = b->zbin_extra;
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#if CONFIG_CODE_NONZEROCOUNT
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int nzc = 0;
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#endif
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eob = -1;
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// Special case for DC as it is the one triggering access in various
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// tables: {zbin, quant, quant_shift, dequant}_ptr[rc != 0]
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{
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z = coeff_ptr[0];
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zbin = (zbin_ptr[0] + zbin_boost_ptr[0] + zbin_oq_value);
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zero_run = 1;
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sz = (z >> 31); // sign of z
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x = (z ^ sz) - sz; // x = abs(z)
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if (x >= zbin) {
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x += (round_ptr[0]);
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y = ((int)(((int)(x * quant_ptr[0]) >> 16) + x))
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>> quant_shift_ptr[0]; // quantize (x)
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x = (y ^ sz) - sz; // get the sign back
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qcoeff_ptr[0] = x; // write to destination
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dqcoeff_ptr[0] = x * dequant_ptr[0]; // dequantized value
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if (y) {
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eob = 0; // last nonzero coeffs
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#if CONFIG_CODE_NONZEROCOUNT
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++nzc; // number of nonzero coeffs
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#endif
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zero_run = 0;
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}
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}
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}
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for (i = 1; i < 64; i++) {
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rc = pt_scan[i];
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z = coeff_ptr[rc];
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zbin = (zbin_ptr[1] + zbin_boost_ptr[zero_run] + zbin_oq_value);
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// The original code was incrementing zero_run while keeping it at
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// maximum 15 by adding "(zero_run < 15)". The same is achieved by
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// removing the opposite of the sign mask of "(zero_run - 15)".
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zero_run -= (zero_run - 15) >> 31;
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sz = (z >> 31); // sign of z
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x = (z ^ sz) - sz; // x = abs(z)
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if (x >= zbin) {
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x += (round_ptr[rc != 0]);
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y = ((int)(((int)(x * quant_ptr[1]) >> 16) + x))
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>> quant_shift_ptr[1]; // quantize (x)
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x = (y ^ sz) - sz; // get the sign back
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qcoeff_ptr[rc] = x; // write to destination
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dqcoeff_ptr[rc] = x * dequant_ptr[1]; // dequantized value
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if (y) {
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eob = i; // last nonzero coeffs
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#if CONFIG_CODE_NONZEROCOUNT
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++nzc; // number of nonzero coeffs
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#endif
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zero_run = 0;
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}
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}
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}
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xd->plane[pb_idx.plane].eobs[pb_idx.block] = eob + 1;
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#if CONFIG_CODE_NONZEROCOUNT
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xd->nzcs[b_idx] = nzc;
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#endif
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} else {
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xd->plane[pb_idx.plane].eobs[pb_idx.block] = 0;
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#if CONFIG_CODE_NONZEROCOUNT
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xd->nzcs[b_idx] = 0;
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#endif
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}
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}
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void vp9_quantize_mby_8x8(MACROBLOCK *x) {
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int i;
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#if CONFIG_CODE_NONZEROCOUNT
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for (i = 0; i < 16; i ++) {
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x->e_mbd.nzcs[i] = 0;
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}
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#endif
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for (i = 0; i < 16; i += 4) {
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TX_TYPE tx_type = get_tx_type_8x8(&x->e_mbd, (i & 8) + ((i & 4) >> 1));
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x->quantize_b_8x8(x, i, tx_type, 16);
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}
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}
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void vp9_quantize_mbuv_8x8(MACROBLOCK *x) {
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int i;
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const MACROBLOCKD * const xd = &x->e_mbd;
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const BLOCK_SIZE_TYPE real_sb_type = xd->mode_info_context->mbmi.sb_type;
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xd->mode_info_context->mbmi.sb_type = BLOCK_SIZE_MB16X16;
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#if CONFIG_CODE_NONZEROCOUNT
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for (i = 16; i < 24; i ++) {
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x->e_mbd.nzcs[i] = 0;
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}
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#endif
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for (i = 16; i < 24; i += 4)
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x->quantize_b_8x8(x, i, DCT_DCT, 16);
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xd->mode_info_context->mbmi.sb_type = real_sb_type;
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}
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void vp9_quantize_mb_8x8(MACROBLOCK *x) {
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vp9_quantize_mby_8x8(x);
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vp9_quantize_mbuv_8x8(x);
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}
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void vp9_quantize_mby_16x16(MACROBLOCK *x) {
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TX_TYPE tx_type = get_tx_type_16x16(&x->e_mbd, 0);
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#if CONFIG_CODE_NONZEROCOUNT
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int i;
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for (i = 0; i < 16; i++) {
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x->e_mbd.nzcs[i] = 0;
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}
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#endif
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x->quantize_b_16x16(x, 0, tx_type, 16);
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}
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void vp9_quantize_mb_16x16(MACROBLOCK *x) {
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vp9_quantize_mby_16x16(x);
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vp9_quantize_mbuv_8x8(x);
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}
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static void quantize(int16_t *zbin_boost_orig_ptr,
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int16_t *coeff_ptr, int n_coeffs, int skip_block,
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int16_t *zbin_ptr, int16_t *round_ptr, int16_t *quant_ptr,
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uint8_t *quant_shift_ptr,
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int16_t *qcoeff_ptr, int16_t *dqcoeff_ptr,
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int16_t *dequant_ptr, int zbin_oq_value,
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uint16_t *eob_ptr,
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#if CONFIG_CODE_NONZEROCOUNT
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uint16_t *nzc_ptr,
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#endif
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const int *scan, int mul) {
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int i, rc, eob;
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int zbin;
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int x, y, z, sz;
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int zero_run = 0;
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int16_t *zbin_boost_ptr = zbin_boost_orig_ptr;
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#if CONFIG_CODE_NONZEROCOUNT
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int nzc = 0;
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#endif
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vpx_memset(qcoeff_ptr, 0, n_coeffs*sizeof(int16_t));
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vpx_memset(dqcoeff_ptr, 0, n_coeffs*sizeof(int16_t));
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eob = -1;
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if (!skip_block) {
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for (i = 0; i < n_coeffs; i++) {
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rc = scan[i];
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z = coeff_ptr[rc] * mul;
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zbin = (zbin_ptr[rc != 0] + zbin_boost_ptr[zero_run] + zbin_oq_value);
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zero_run += (zero_run < 15);
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sz = (z >> 31); // sign of z
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x = (z ^ sz) - sz; // x = abs(z)
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if (x >= zbin) {
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x += (round_ptr[rc != 0]);
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y = ((int)(((int)(x * quant_ptr[rc != 0]) >> 16) + x))
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>> quant_shift_ptr[rc != 0]; // quantize (x)
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x = (y ^ sz) - sz; // get the sign back
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qcoeff_ptr[rc] = x; // write to destination
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dqcoeff_ptr[rc] = x * dequant_ptr[rc != 0] / mul; // dequantized value
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if (y) {
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eob = i; // last nonzero coeffs
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zero_run = 0;
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#if CONFIG_CODE_NONZEROCOUNT
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++nzc; // number of nonzero coeffs
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#endif
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}
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}
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}
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}
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*eob_ptr = eob + 1;
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#if CONFIG_CODE_NONZEROCOUNT
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*nzc_ptr = nzc;
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#endif
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}
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void vp9_regular_quantize_b_16x16(MACROBLOCK *mb, int b_idx, TX_TYPE tx_type,
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int y_blocks) {
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MACROBLOCKD *const xd = &mb->e_mbd;
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const struct plane_block_idx pb_idx = plane_block_idx(y_blocks, b_idx);
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const int c_idx = plane_idx(pb_idx.plane);
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BLOCK *const b = &mb->block[c_idx];
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BLOCKD *const d = &xd->block[c_idx];
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const int *pt_scan;
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switch (tx_type) {
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case ADST_DCT:
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pt_scan = vp9_row_scan_16x16;
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break;
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case DCT_ADST:
|
|
pt_scan = vp9_col_scan_16x16;
|
|
break;
|
|
default:
|
|
pt_scan = vp9_default_zig_zag1d_16x16;
|
|
break;
|
|
}
|
|
|
|
if (c_idx == 0) assert(pb_idx.plane == 0);
|
|
if (c_idx == 16) assert(pb_idx.plane == 1);
|
|
if (c_idx == 20) assert(pb_idx.plane == 2);
|
|
quantize(b->zrun_zbin_boost,
|
|
mb->coeff + 16 * b_idx,
|
|
256, b->skip_block,
|
|
b->zbin, b->round, b->quant, b->quant_shift,
|
|
BLOCK_OFFSET(xd->plane[pb_idx.plane].qcoeff, pb_idx.block, 16),
|
|
BLOCK_OFFSET(xd->plane[pb_idx.plane].dqcoeff, pb_idx.block, 16),
|
|
d->dequant,
|
|
b->zbin_extra,
|
|
&xd->plane[pb_idx.plane].eobs[pb_idx.block],
|
|
#if CONFIG_CODE_NONZEROCOUNT
|
|
&xd->nzcs[b_idx],
|
|
#endif
|
|
pt_scan, 1);
|
|
}
|
|
|
|
void vp9_regular_quantize_b_32x32(MACROBLOCK *mb, int b_idx, int y_blocks) {
|
|
MACROBLOCKD *const xd = &mb->e_mbd;
|
|
const struct plane_block_idx pb_idx = plane_block_idx(y_blocks, b_idx);
|
|
const int c_idx = plane_idx(pb_idx.plane);
|
|
BLOCK *const b = &mb->block[c_idx];
|
|
BLOCKD *const d = &xd->block[c_idx];
|
|
|
|
if (c_idx == 0) assert(pb_idx.plane == 0);
|
|
if (c_idx == 16) assert(pb_idx.plane == 1);
|
|
if (c_idx == 20) assert(pb_idx.plane == 2);
|
|
quantize(b->zrun_zbin_boost,
|
|
mb->coeff + b_idx * 16,
|
|
1024, b->skip_block,
|
|
b->zbin,
|
|
b->round, b->quant, b->quant_shift,
|
|
BLOCK_OFFSET(xd->plane[pb_idx.plane].qcoeff, pb_idx.block, 16),
|
|
BLOCK_OFFSET(xd->plane[pb_idx.plane].dqcoeff, pb_idx.block, 16),
|
|
d->dequant,
|
|
b->zbin_extra,
|
|
&xd->plane[pb_idx.plane].eobs[pb_idx.block],
|
|
#if CONFIG_CODE_NONZEROCOUNT
|
|
&xd->nzcs[b_idx],
|
|
#endif
|
|
vp9_default_zig_zag1d_32x32, 2);
|
|
}
|
|
|
|
void vp9_quantize_sby_32x32(MACROBLOCK *x, BLOCK_SIZE_TYPE bsize) {
|
|
const int bw = 1 << (mb_width_log2(bsize) - 1);
|
|
const int bh = 1 << (mb_height_log2(bsize) - 1);
|
|
int n;
|
|
|
|
for (n = 0; n < bw * bh; n++)
|
|
vp9_regular_quantize_b_32x32(x, n * 64, bw * bh * 64);
|
|
}
|
|
|
|
void vp9_quantize_sby_16x16(MACROBLOCK *x, BLOCK_SIZE_TYPE bsize) {
|
|
const int bwl = mb_width_log2(bsize), bw = 1 << bwl;
|
|
const int bh = 1 << mb_height_log2(bsize);
|
|
const int bstride = 16 << bwl;
|
|
int n;
|
|
|
|
for (n = 0; n < bw * bh; n++) {
|
|
const int x_idx = n & (bw - 1), y_idx = n >> bwl;
|
|
TX_TYPE tx_type = get_tx_type_16x16(&x->e_mbd,
|
|
4 * x_idx + y_idx * bstride);
|
|
x->quantize_b_16x16(x, n * 16, tx_type, 16 * bw * bh);
|
|
}
|
|
}
|
|
|
|
void vp9_quantize_sby_8x8(MACROBLOCK *x, BLOCK_SIZE_TYPE bsize) {
|
|
const int bwl = mb_width_log2(bsize) + 1, bw = 1 << bwl;
|
|
const int bh = 1 << (mb_height_log2(bsize) + 1);
|
|
const int bstride = 4 << bwl;
|
|
int n;
|
|
|
|
for (n = 0; n < bw * bh; n++) {
|
|
const int x_idx = n & (bw - 1), y_idx = n >> bwl;
|
|
TX_TYPE tx_type = get_tx_type_8x8(&x->e_mbd,
|
|
2 * x_idx + y_idx * bstride);
|
|
x->quantize_b_8x8(x, n * 4, tx_type, 4 * bw * bh);
|
|
}
|
|
}
|
|
|
|
void vp9_quantize_sby_4x4(MACROBLOCK *x, BLOCK_SIZE_TYPE bsize) {
|
|
const int bwl = mb_width_log2(bsize) + 2, bw = 1 << bwl;
|
|
const int bh = 1 << (mb_height_log2(bsize) + 2);
|
|
MACROBLOCKD *const xd = &x->e_mbd;
|
|
int n;
|
|
|
|
for (n = 0; n < bw * bh; n++) {
|
|
const TX_TYPE tx_type = get_tx_type_4x4(xd, n);
|
|
if (tx_type != DCT_DCT) {
|
|
vp9_ht_quantize_b_4x4(x, n, tx_type);
|
|
} else {
|
|
x->quantize_b_4x4(x, n, bw * bh);
|
|
}
|
|
}
|
|
}
|
|
|
|
void vp9_quantize_sbuv_32x32(MACROBLOCK *x, BLOCK_SIZE_TYPE bsize) {
|
|
assert(bsize == BLOCK_SIZE_SB64X64);
|
|
vp9_regular_quantize_b_32x32(x, 256, 256);
|
|
vp9_regular_quantize_b_32x32(x, 320, 256);
|
|
}
|
|
|
|
void vp9_quantize_sbuv_16x16(MACROBLOCK *x, BLOCK_SIZE_TYPE bsize) {
|
|
const int bwl = mb_width_log2(bsize);
|
|
const int bhl = mb_width_log2(bsize);
|
|
const int uoff = 16 << (bhl + bwl);
|
|
int i;
|
|
|
|
for (i = uoff; i < ((uoff * 3) >> 1); i += 16)
|
|
x->quantize_b_16x16(x, i, DCT_DCT, uoff);
|
|
}
|
|
|
|
void vp9_quantize_sbuv_8x8(MACROBLOCK *x, BLOCK_SIZE_TYPE bsize) {
|
|
const int bwl = mb_width_log2(bsize);
|
|
const int bhl = mb_width_log2(bsize);
|
|
const int uoff = 16 << (bhl + bwl);
|
|
int i;
|
|
|
|
for (i = uoff; i < ((uoff * 3) >> 1); i += 4)
|
|
x->quantize_b_8x8(x, i, DCT_DCT, uoff);
|
|
}
|
|
|
|
void vp9_quantize_sbuv_4x4(MACROBLOCK *x, BLOCK_SIZE_TYPE bsize) {
|
|
const int bwl = mb_width_log2(bsize);
|
|
const int bhl = mb_width_log2(bsize);
|
|
const int uoff = 16 << (bhl + bwl);
|
|
int i;
|
|
|
|
for (i = uoff; i < ((uoff * 3) >> 1); i++)
|
|
x->quantize_b_4x4(x, i, uoff);
|
|
}
|
|
|
|
/* 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
|
|
* of blocks. */
|
|
void vp9_regular_quantize_b_4x4_pair(MACROBLOCK *x, int b_idx1, int b_idx2,
|
|
int y_blocks) {
|
|
vp9_regular_quantize_b_4x4(x, b_idx1, y_blocks);
|
|
vp9_regular_quantize_b_4x4(x, b_idx2, y_blocks);
|
|
}
|
|
|
|
static void invert_quant(int16_t *quant, uint8_t *shift, int d) {
|
|
unsigned t;
|
|
int l;
|
|
t = d;
|
|
for (l = 0; t > 1; l++)
|
|
t >>= 1;
|
|
t = 1 + (1 << (16 + l)) / d;
|
|
*quant = (int16_t)(t - (1 << 16));
|
|
*shift = l;
|
|
}
|
|
|
|
void vp9_init_quantizer(VP9_COMP *cpi) {
|
|
int i;
|
|
int quant_val;
|
|
int q;
|
|
|
|
static const int zbin_boost[16] = { 0, 0, 0, 8, 8, 8, 10, 12,
|
|
14, 16, 20, 24, 28, 32, 36, 40 };
|
|
|
|
for (q = 0; q < QINDEX_RANGE; q++) {
|
|
int qzbin_factor = (vp9_dc_quant(q, 0) < 148) ? 84 : 80;
|
|
int qrounding_factor = 48;
|
|
if (q == 0) {
|
|
qzbin_factor = 64;
|
|
qrounding_factor = 64;
|
|
}
|
|
// dc values
|
|
quant_val = vp9_dc_quant(q, cpi->common.y1dc_delta_q);
|
|
invert_quant(cpi->Y1quant[q] + 0, cpi->Y1quant_shift[q] + 0, quant_val);
|
|
cpi->Y1zbin[q][0] = ROUND_POWER_OF_TWO(qzbin_factor * quant_val, 7);
|
|
cpi->Y1round[q][0] = (qrounding_factor * quant_val) >> 7;
|
|
cpi->common.y_dequant[q][0] = quant_val;
|
|
cpi->zrun_zbin_boost_y1[q][0] = (quant_val * zbin_boost[0]) >> 7;
|
|
|
|
quant_val = vp9_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] = ROUND_POWER_OF_TWO(qzbin_factor * quant_val, 7);
|
|
cpi->UVround[q][0] = (qrounding_factor * quant_val) >> 7;
|
|
cpi->common.uv_dequant[q][0] = quant_val;
|
|
cpi->zrun_zbin_boost_uv[q][0] = (quant_val * zbin_boost[0]) >> 7;
|
|
|
|
// all the 4x4 ac values =;
|
|
for (i = 1; i < 16; i++) {
|
|
int rc = vp9_default_zig_zag1d_4x4[i];
|
|
|
|
quant_val = vp9_ac_yquant(q);
|
|
invert_quant(cpi->Y1quant[q] + rc, cpi->Y1quant_shift[q] + rc, quant_val);
|
|
cpi->Y1zbin[q][rc] = ROUND_POWER_OF_TWO(qzbin_factor * quant_val, 7);
|
|
cpi->Y1round[q][rc] = (qrounding_factor * quant_val) >> 7;
|
|
cpi->common.y_dequant[q][rc] = quant_val;
|
|
cpi->zrun_zbin_boost_y1[q][i] =
|
|
ROUND_POWER_OF_TWO(quant_val * zbin_boost[i], 7);
|
|
|
|
quant_val = vp9_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] = ROUND_POWER_OF_TWO(qzbin_factor * quant_val, 7);
|
|
cpi->UVround[q][rc] = (qrounding_factor * quant_val) >> 7;
|
|
cpi->common.uv_dequant[q][rc] = quant_val;
|
|
cpi->zrun_zbin_boost_uv[q][i] =
|
|
ROUND_POWER_OF_TWO(quant_val * zbin_boost[i], 7);
|
|
}
|
|
}
|
|
}
|
|
|
|
void vp9_mb_init_quantizer(VP9_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)) {
|
|
if (xd->mb_segment_abs_delta == SEGMENT_ABSDATA) {
|
|
// Abs Value
|
|
qindex = vp9_get_segdata(xd, segment_id, SEG_LVL_ALT_Q);
|
|
} else {
|
|
// Delta Value
|
|
qindex = cpi->common.base_qindex +
|
|
vp9_get_segdata(xd, segment_id, SEG_LVL_ALT_Q);
|
|
|
|
// Clamp to valid range
|
|
qindex = clamp(qindex, 0, MAXQ);
|
|
}
|
|
} else {
|
|
qindex = cpi->common.base_qindex;
|
|
}
|
|
|
|
// Y
|
|
zbin_extra = (cpi->common.y_dequant[qindex][1] *
|
|
(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_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.y_dequant[qindex];
|
|
x->block[i].zrun_zbin_boost = cpi->zrun_zbin_boost_y1[qindex];
|
|
x->block[i].zbin_extra = (int16_t)zbin_extra;
|
|
|
|
// Segment skip feature.
|
|
x->block[i].skip_block =
|
|
vp9_segfeature_active(xd, segment_id, SEG_LVL_SKIP);
|
|
}
|
|
|
|
// UV
|
|
zbin_extra = (cpi->common.uv_dequant[qindex][1] *
|
|
(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].round = cpi->UVround[qindex];
|
|
x->e_mbd.block[i].dequant = cpi->common.uv_dequant[qindex];
|
|
x->block[i].zrun_zbin_boost = cpi->zrun_zbin_boost_uv[qindex];
|
|
x->block[i].zbin_extra = (int16_t)zbin_extra;
|
|
|
|
// Segment skip feature.
|
|
x->block[i].skip_block =
|
|
vp9_segfeature_active(xd, segment_id, SEG_LVL_SKIP);
|
|
}
|
|
|
|
/* save this macroblock QIndex for vp9_update_zbin_extra() */
|
|
x->e_mbd.q_index = qindex;
|
|
}
|
|
|
|
void vp9_update_zbin_extra(VP9_COMP *cpi, MACROBLOCK *x) {
|
|
int i;
|
|
const int qindex = x->e_mbd.q_index;
|
|
const int y_zbin_extra = (cpi->common.y_dequant[qindex][1] *
|
|
(cpi->zbin_mode_boost + x->act_zbin_adj)) >> 7;
|
|
const int uv_zbin_extra = (cpi->common.uv_dequant[qindex][1] *
|
|
(cpi->zbin_mode_boost + x->act_zbin_adj)) >> 7;
|
|
|
|
for (i = 0; i < 16; i++)
|
|
x->block[i].zbin_extra = (int16_t)y_zbin_extra;
|
|
|
|
for (i = 16; i < 24; i++)
|
|
x->block[i].zbin_extra = (int16_t)uv_zbin_extra;
|
|
}
|
|
|
|
void vp9_frame_init_quantizer(VP9_COMP *cpi) {
|
|
// Clear Zbin mode boost for default case
|
|
cpi->zbin_mode_boost = 0;
|
|
|
|
// MB level quantizer setup
|
|
vp9_mb_init_quantizer(cpi, &cpi->mb);
|
|
}
|
|
|
|
void vp9_set_quantizer(struct VP9_COMP *cpi, int Q) {
|
|
VP9_COMMON *cm = &cpi->common;
|
|
|
|
cm->base_qindex = Q;
|
|
|
|
// Set lossless mode
|
|
if (cm->base_qindex <= 4)
|
|
cm->base_qindex = 0;
|
|
|
|
// if any of the delta_q values are changing update flag will
|
|
// have to be set.
|
|
cm->y1dc_delta_q = 0;
|
|
cm->uvdc_delta_q = 0;
|
|
cm->uvac_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)
|
|
// vp9_init_quantizer(cpi);
|
|
}
|