728 строки
26 KiB
C
728 строки
26 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/common/vp9_quant_common.h"
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#include "vp9/common/vp9_seg_common.h"
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#include "vp9/encoder/vp9_encoder.h"
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#include "vp9/encoder/vp9_quantize.h"
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#include "vp9/encoder/vp9_rd.h"
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void vp9_quantize_dc(const tran_low_t *coeff_ptr,
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int n_coeffs, int skip_block,
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const int16_t *round_ptr, const int16_t quant,
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tran_low_t *qcoeff_ptr, tran_low_t *dqcoeff_ptr,
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const int16_t dequant_ptr, uint16_t *eob_ptr) {
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const int rc = 0;
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const int coeff = coeff_ptr[rc];
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const int coeff_sign = (coeff >> 31);
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const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
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int tmp, eob = -1;
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vpx_memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
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vpx_memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr));
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if (!skip_block) {
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tmp = clamp(abs_coeff + round_ptr[rc != 0], INT16_MIN, INT16_MAX);
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tmp = (tmp * quant) >> 16;
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qcoeff_ptr[rc] = (tmp ^ coeff_sign) - coeff_sign;
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dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant_ptr;
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if (tmp)
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eob = 0;
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}
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*eob_ptr = eob + 1;
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}
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#if CONFIG_VP9_HIGHBITDEPTH
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void vp9_highbd_quantize_dc(const tran_low_t *coeff_ptr,
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int n_coeffs, int skip_block,
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const int16_t *round_ptr, const int16_t quant,
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tran_low_t *qcoeff_ptr, tran_low_t *dqcoeff_ptr,
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const int16_t dequant_ptr, uint16_t *eob_ptr) {
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int eob = -1;
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vpx_memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
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vpx_memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr));
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if (!skip_block) {
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const int rc = 0;
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const int coeff = coeff_ptr[rc];
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const int coeff_sign = (coeff >> 31);
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const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
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const int64_t tmp =
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(clamp(abs_coeff + round_ptr[rc != 0], INT32_MIN, INT32_MAX) *
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quant) >> 16;
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qcoeff_ptr[rc] = (tran_low_t)((tmp ^ coeff_sign) - coeff_sign);
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dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant_ptr;
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if (tmp)
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eob = 0;
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}
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*eob_ptr = eob + 1;
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}
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#endif
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void vp9_quantize_dc_32x32(const tran_low_t *coeff_ptr, int skip_block,
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const int16_t *round_ptr, const int16_t quant,
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tran_low_t *qcoeff_ptr, tran_low_t *dqcoeff_ptr,
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const int16_t dequant_ptr, uint16_t *eob_ptr) {
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const int n_coeffs = 1024;
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const int rc = 0;
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const int coeff = coeff_ptr[rc];
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const int coeff_sign = (coeff >> 31);
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const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
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int tmp, eob = -1;
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vpx_memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
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vpx_memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr));
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if (!skip_block) {
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tmp = clamp(abs_coeff + ROUND_POWER_OF_TWO(round_ptr[rc != 0], 1),
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INT16_MIN, INT16_MAX);
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tmp = (tmp * quant) >> 15;
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qcoeff_ptr[rc] = (tmp ^ coeff_sign) - coeff_sign;
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dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant_ptr / 2;
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if (tmp)
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eob = 0;
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}
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*eob_ptr = eob + 1;
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}
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#if CONFIG_VP9_HIGHBITDEPTH
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void vp9_highbd_quantize_dc_32x32(const tran_low_t *coeff_ptr,
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int skip_block,
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const int16_t *round_ptr,
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const int16_t quant,
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tran_low_t *qcoeff_ptr,
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tran_low_t *dqcoeff_ptr,
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const int16_t dequant_ptr,
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uint16_t *eob_ptr) {
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const int n_coeffs = 1024;
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int eob = -1;
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vpx_memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
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vpx_memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr));
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if (!skip_block) {
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const int rc = 0;
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const int coeff = coeff_ptr[rc];
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const int coeff_sign = (coeff >> 31);
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const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
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const int64_t tmp =
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(clamp(abs_coeff + ROUND_POWER_OF_TWO(round_ptr[rc != 0], 1),
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INT32_MIN, INT32_MAX) * quant) >> 15;
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qcoeff_ptr[rc] = (tran_low_t)((tmp ^ coeff_sign) - coeff_sign);
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dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant_ptr / 2;
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if (tmp)
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eob = 0;
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}
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*eob_ptr = eob + 1;
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}
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#endif
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void vp9_quantize_fp_c(const tran_low_t *coeff_ptr, intptr_t n_coeffs,
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int skip_block,
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const int16_t *zbin_ptr, const int16_t *round_ptr,
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const int16_t *quant_ptr, const int16_t *quant_shift_ptr,
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tran_low_t *qcoeff_ptr, tran_low_t *dqcoeff_ptr,
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const int16_t *dequant_ptr,
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uint16_t *eob_ptr,
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const int16_t *scan, const int16_t *iscan) {
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int i, eob = -1;
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// TODO(jingning) Decide the need of these arguments after the
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// quantization process is completed.
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(void)zbin_ptr;
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(void)quant_shift_ptr;
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(void)iscan;
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vpx_memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
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vpx_memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr));
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if (!skip_block) {
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// Quantization pass: All coefficients with index >= zero_flag are
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// skippable. Note: zero_flag can be zero.
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for (i = 0; i < n_coeffs; i++) {
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const int rc = scan[i];
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const int coeff = coeff_ptr[rc];
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const int coeff_sign = (coeff >> 31);
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const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
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int tmp = clamp(abs_coeff + round_ptr[rc != 0], INT16_MIN, INT16_MAX);
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tmp = (tmp * quant_ptr[rc != 0]) >> 16;
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qcoeff_ptr[rc] = (tmp ^ coeff_sign) - coeff_sign;
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dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant_ptr[rc != 0];
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if (tmp)
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eob = i;
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}
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}
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*eob_ptr = eob + 1;
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}
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#if CONFIG_VP9_HIGHBITDEPTH
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void vp9_highbd_quantize_fp_c(const tran_low_t *coeff_ptr,
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intptr_t count,
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int skip_block,
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const int16_t *zbin_ptr,
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const int16_t *round_ptr,
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const int16_t *quant_ptr,
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const int16_t *quant_shift_ptr,
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tran_low_t *qcoeff_ptr,
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tran_low_t *dqcoeff_ptr,
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const int16_t *dequant_ptr,
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uint16_t *eob_ptr,
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const int16_t *scan,
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const int16_t *iscan) {
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int i;
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int eob = -1;
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// TODO(jingning) Decide the need of these arguments after the
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// quantization process is completed.
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(void)zbin_ptr;
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(void)quant_shift_ptr;
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(void)iscan;
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vpx_memset(qcoeff_ptr, 0, count * sizeof(*qcoeff_ptr));
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vpx_memset(dqcoeff_ptr, 0, count * sizeof(*dqcoeff_ptr));
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if (!skip_block) {
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// Quantization pass: All coefficients with index >= zero_flag are
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// skippable. Note: zero_flag can be zero.
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for (i = 0; i < count; i++) {
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const int rc = scan[i];
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const int coeff = coeff_ptr[rc];
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const int coeff_sign = (coeff >> 31);
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const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
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const int64_t tmp =
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(clamp(abs_coeff + round_ptr[rc != 0], INT32_MIN, INT32_MAX) *
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quant_ptr[rc != 0]) >> 16;
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qcoeff_ptr[rc] = (tran_low_t)((tmp ^ coeff_sign) - coeff_sign);
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dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant_ptr[rc != 0];
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if (tmp)
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eob = i;
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}
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}
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*eob_ptr = eob + 1;
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}
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#endif
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// TODO(jingning) Refactor this file and combine functions with similar
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// operations.
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void vp9_quantize_fp_32x32_c(const tran_low_t *coeff_ptr, intptr_t n_coeffs,
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int skip_block,
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const int16_t *zbin_ptr, const int16_t *round_ptr,
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const int16_t *quant_ptr,
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const int16_t *quant_shift_ptr,
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tran_low_t *qcoeff_ptr, tran_low_t *dqcoeff_ptr,
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const int16_t *dequant_ptr,
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uint16_t *eob_ptr,
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const int16_t *scan, const int16_t *iscan) {
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int i, eob = -1;
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(void)zbin_ptr;
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(void)quant_shift_ptr;
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(void)iscan;
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vpx_memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
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vpx_memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr));
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if (!skip_block) {
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for (i = 0; i < n_coeffs; i++) {
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const int rc = scan[i];
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const int coeff = coeff_ptr[rc];
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const int coeff_sign = (coeff >> 31);
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int tmp = 0;
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int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
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if (abs_coeff >= (dequant_ptr[rc != 0] >> 2)) {
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abs_coeff += ROUND_POWER_OF_TWO(round_ptr[rc != 0], 1);
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abs_coeff = clamp(abs_coeff, INT16_MIN, INT16_MAX);
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tmp = (abs_coeff * quant_ptr[rc != 0]) >> 15;
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qcoeff_ptr[rc] = (tmp ^ coeff_sign) - coeff_sign;
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dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant_ptr[rc != 0] / 2;
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}
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if (tmp)
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eob = i;
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}
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}
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*eob_ptr = eob + 1;
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}
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#if CONFIG_VP9_HIGHBITDEPTH
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void vp9_highbd_quantize_fp_32x32_c(const tran_low_t *coeff_ptr,
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intptr_t n_coeffs, int skip_block,
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const int16_t *zbin_ptr,
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const int16_t *round_ptr,
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const int16_t *quant_ptr,
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const int16_t *quant_shift_ptr,
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tran_low_t *qcoeff_ptr,
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tran_low_t *dqcoeff_ptr,
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const int16_t *dequant_ptr,
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uint16_t *eob_ptr,
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const int16_t *scan, const int16_t *iscan) {
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int i, eob = -1;
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(void)zbin_ptr;
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(void)quant_shift_ptr;
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(void)iscan;
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vpx_memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
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vpx_memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr));
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if (!skip_block) {
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for (i = 0; i < n_coeffs; i++) {
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const int rc = scan[i];
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const int coeff = coeff_ptr[rc];
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const int coeff_sign = (coeff >> 31);
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int64_t tmp = 0;
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const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
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if (abs_coeff >= (dequant_ptr[rc != 0] >> 2)) {
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tmp = clamp(abs_coeff + ROUND_POWER_OF_TWO(round_ptr[rc != 0], 1),
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INT32_MIN, INT32_MAX);
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tmp = (tmp * quant_ptr[rc != 0]) >> 15;
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qcoeff_ptr[rc] = (tran_low_t)((tmp ^ coeff_sign) - coeff_sign);
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dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant_ptr[rc != 0] / 2;
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}
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if (tmp)
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eob = i;
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}
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}
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*eob_ptr = eob + 1;
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}
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#endif
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void vp9_quantize_b_c(const tran_low_t *coeff_ptr, intptr_t n_coeffs,
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int skip_block,
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const int16_t *zbin_ptr, const int16_t *round_ptr,
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const int16_t *quant_ptr, const int16_t *quant_shift_ptr,
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tran_low_t *qcoeff_ptr, tran_low_t *dqcoeff_ptr,
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const int16_t *dequant_ptr,
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uint16_t *eob_ptr,
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const int16_t *scan, const int16_t *iscan) {
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int i, non_zero_count = (int)n_coeffs, eob = -1;
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const int zbins[2] = {zbin_ptr[0], zbin_ptr[1]};
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const int nzbins[2] = {zbins[0] * -1, zbins[1] * -1};
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(void)iscan;
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vpx_memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
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vpx_memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr));
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if (!skip_block) {
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// Pre-scan pass
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for (i = (int)n_coeffs - 1; i >= 0; i--) {
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const int rc = scan[i];
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const int coeff = coeff_ptr[rc];
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if (coeff < zbins[rc != 0] && coeff > nzbins[rc != 0])
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non_zero_count--;
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else
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break;
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}
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// Quantization pass: All coefficients with index >= zero_flag are
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// skippable. Note: zero_flag can be zero.
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for (i = 0; i < non_zero_count; i++) {
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const int rc = scan[i];
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const int coeff = coeff_ptr[rc];
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const int coeff_sign = (coeff >> 31);
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const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
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if (abs_coeff >= zbins[rc != 0]) {
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int tmp = clamp(abs_coeff + round_ptr[rc != 0], INT16_MIN, INT16_MAX);
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tmp = ((((tmp * quant_ptr[rc != 0]) >> 16) + tmp) *
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quant_shift_ptr[rc != 0]) >> 16; // quantization
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qcoeff_ptr[rc] = (tmp ^ coeff_sign) - coeff_sign;
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dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant_ptr[rc != 0];
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if (tmp)
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eob = i;
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}
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}
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}
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*eob_ptr = eob + 1;
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}
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#if CONFIG_VP9_HIGHBITDEPTH
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void vp9_highbd_quantize_b_c(const tran_low_t *coeff_ptr, intptr_t n_coeffs,
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int skip_block, const int16_t *zbin_ptr,
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const int16_t *round_ptr, const int16_t *quant_ptr,
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const int16_t *quant_shift_ptr,
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tran_low_t *qcoeff_ptr, tran_low_t *dqcoeff_ptr,
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const int16_t *dequant_ptr,
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uint16_t *eob_ptr, const int16_t *scan,
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const int16_t *iscan) {
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int i, non_zero_count = (int)n_coeffs, eob = -1;
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const int zbins[2] = {zbin_ptr[0], zbin_ptr[1]};
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const int nzbins[2] = {zbins[0] * -1, zbins[1] * -1};
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(void)iscan;
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vpx_memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
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vpx_memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr));
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if (!skip_block) {
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// Pre-scan pass
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for (i = (int)n_coeffs - 1; i >= 0; i--) {
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const int rc = scan[i];
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const int coeff = coeff_ptr[rc];
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if (coeff < zbins[rc != 0] && coeff > nzbins[rc != 0])
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non_zero_count--;
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else
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break;
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}
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// Quantization pass: All coefficients with index >= zero_flag are
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// skippable. Note: zero_flag can be zero.
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for (i = 0; i < non_zero_count; i++) {
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const int rc = scan[i];
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const int coeff = coeff_ptr[rc];
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const int coeff_sign = (coeff >> 31);
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const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
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if (abs_coeff >= zbins[rc != 0]) {
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int64_t tmp = clamp(abs_coeff + round_ptr[rc != 0],
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INT32_MIN, INT32_MAX);
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tmp = ((((tmp * quant_ptr[rc != 0]) >> 16) + tmp) *
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quant_shift_ptr[rc != 0]) >> 16; // quantization
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qcoeff_ptr[rc] = (tran_low_t)((tmp ^ coeff_sign) - coeff_sign);
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dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant_ptr[rc != 0];
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if (tmp)
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eob = i;
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}
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}
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}
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*eob_ptr = eob + 1;
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}
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#endif
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void vp9_quantize_b_32x32_c(const tran_low_t *coeff_ptr, intptr_t n_coeffs,
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int skip_block,
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const int16_t *zbin_ptr, const int16_t *round_ptr,
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const int16_t *quant_ptr,
|
|
const int16_t *quant_shift_ptr,
|
|
tran_low_t *qcoeff_ptr, tran_low_t *dqcoeff_ptr,
|
|
const int16_t *dequant_ptr,
|
|
uint16_t *eob_ptr,
|
|
const int16_t *scan, const int16_t *iscan) {
|
|
const int zbins[2] = {ROUND_POWER_OF_TWO(zbin_ptr[0], 1),
|
|
ROUND_POWER_OF_TWO(zbin_ptr[1], 1)};
|
|
const int nzbins[2] = {zbins[0] * -1, zbins[1] * -1};
|
|
|
|
int idx = 0;
|
|
int idx_arr[1024];
|
|
int i, eob = -1;
|
|
(void)iscan;
|
|
|
|
vpx_memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
|
|
vpx_memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr));
|
|
|
|
if (!skip_block) {
|
|
// Pre-scan pass
|
|
for (i = 0; i < n_coeffs; i++) {
|
|
const int rc = scan[i];
|
|
const int coeff = coeff_ptr[rc];
|
|
|
|
// If the coefficient is out of the base ZBIN range, keep it for
|
|
// quantization.
|
|
if (coeff >= zbins[rc != 0] || coeff <= nzbins[rc != 0])
|
|
idx_arr[idx++] = i;
|
|
}
|
|
|
|
// Quantization pass: only process the coefficients selected in
|
|
// pre-scan pass. Note: idx can be zero.
|
|
for (i = 0; i < idx; i++) {
|
|
const int rc = scan[idx_arr[i]];
|
|
const int coeff = coeff_ptr[rc];
|
|
const int coeff_sign = (coeff >> 31);
|
|
int tmp;
|
|
int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
|
|
abs_coeff += ROUND_POWER_OF_TWO(round_ptr[rc != 0], 1);
|
|
abs_coeff = clamp(abs_coeff, INT16_MIN, INT16_MAX);
|
|
tmp = ((((abs_coeff * quant_ptr[rc != 0]) >> 16) + abs_coeff) *
|
|
quant_shift_ptr[rc != 0]) >> 15;
|
|
|
|
qcoeff_ptr[rc] = (tmp ^ coeff_sign) - coeff_sign;
|
|
dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant_ptr[rc != 0] / 2;
|
|
|
|
if (tmp)
|
|
eob = idx_arr[i];
|
|
}
|
|
}
|
|
*eob_ptr = eob + 1;
|
|
}
|
|
|
|
#if CONFIG_VP9_HIGHBITDEPTH
|
|
void vp9_highbd_quantize_b_32x32_c(const tran_low_t *coeff_ptr,
|
|
intptr_t n_coeffs, int skip_block,
|
|
const int16_t *zbin_ptr,
|
|
const int16_t *round_ptr,
|
|
const int16_t *quant_ptr,
|
|
const int16_t *quant_shift_ptr,
|
|
tran_low_t *qcoeff_ptr,
|
|
tran_low_t *dqcoeff_ptr,
|
|
const int16_t *dequant_ptr,
|
|
uint16_t *eob_ptr,
|
|
const int16_t *scan, const int16_t *iscan) {
|
|
const int zbins[2] = {ROUND_POWER_OF_TWO(zbin_ptr[0], 1),
|
|
ROUND_POWER_OF_TWO(zbin_ptr[1], 1)};
|
|
const int nzbins[2] = {zbins[0] * -1, zbins[1] * -1};
|
|
|
|
int idx = 0;
|
|
int idx_arr[1024];
|
|
int i, eob = -1;
|
|
(void)iscan;
|
|
|
|
vpx_memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
|
|
vpx_memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr));
|
|
|
|
if (!skip_block) {
|
|
// Pre-scan pass
|
|
for (i = 0; i < n_coeffs; i++) {
|
|
const int rc = scan[i];
|
|
const int coeff = coeff_ptr[rc];
|
|
|
|
// If the coefficient is out of the base ZBIN range, keep it for
|
|
// quantization.
|
|
if (coeff >= zbins[rc != 0] || coeff <= nzbins[rc != 0])
|
|
idx_arr[idx++] = i;
|
|
}
|
|
|
|
// Quantization pass: only process the coefficients selected in
|
|
// pre-scan pass. Note: idx can be zero.
|
|
for (i = 0; i < idx; i++) {
|
|
const int rc = scan[idx_arr[i]];
|
|
const int coeff = coeff_ptr[rc];
|
|
const int coeff_sign = (coeff >> 31);
|
|
const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
|
|
int64_t tmp = clamp(abs_coeff +
|
|
ROUND_POWER_OF_TWO(round_ptr[rc != 0], 1),
|
|
INT32_MIN, INT32_MAX);
|
|
tmp = ((((tmp * quant_ptr[rc != 0]) >> 16) + tmp) *
|
|
quant_shift_ptr[rc != 0]) >> 15;
|
|
|
|
qcoeff_ptr[rc] = (tran_low_t)((tmp ^ coeff_sign) - coeff_sign);
|
|
dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant_ptr[rc != 0] / 2;
|
|
|
|
if (tmp)
|
|
eob = idx_arr[i];
|
|
}
|
|
}
|
|
*eob_ptr = eob + 1;
|
|
}
|
|
#endif
|
|
|
|
void vp9_regular_quantize_b_4x4(MACROBLOCK *x, int plane, int block,
|
|
const int16_t *scan, const int16_t *iscan) {
|
|
MACROBLOCKD *const xd = &x->e_mbd;
|
|
struct macroblock_plane *p = &x->plane[plane];
|
|
struct macroblockd_plane *pd = &xd->plane[plane];
|
|
|
|
#if CONFIG_VP9_HIGHBITDEPTH
|
|
if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
|
|
vp9_highbd_quantize_b(BLOCK_OFFSET(p->coeff, block),
|
|
16, x->skip_block,
|
|
p->zbin, p->round, p->quant, p->quant_shift,
|
|
BLOCK_OFFSET(p->qcoeff, block),
|
|
BLOCK_OFFSET(pd->dqcoeff, block),
|
|
pd->dequant, &p->eobs[block],
|
|
scan, iscan);
|
|
return;
|
|
}
|
|
#endif
|
|
vp9_quantize_b(BLOCK_OFFSET(p->coeff, block),
|
|
16, x->skip_block,
|
|
p->zbin, p->round, p->quant, p->quant_shift,
|
|
BLOCK_OFFSET(p->qcoeff, block),
|
|
BLOCK_OFFSET(pd->dqcoeff, block),
|
|
pd->dequant, &p->eobs[block], scan, iscan);
|
|
}
|
|
|
|
static void invert_quant(int16_t *quant, int16_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 = 1 << (16 - l);
|
|
}
|
|
|
|
static int get_qzbin_factor(int q, vpx_bit_depth_t bit_depth) {
|
|
const int quant = vp9_dc_quant(q, 0, bit_depth);
|
|
#if CONFIG_VP9_HIGHBITDEPTH
|
|
switch (bit_depth) {
|
|
case VPX_BITS_8:
|
|
return q == 0 ? 64 : (quant < 148 ? 84 : 80);
|
|
case VPX_BITS_10:
|
|
return q == 0 ? 64 : (quant < 592 ? 84 : 80);
|
|
case VPX_BITS_12:
|
|
return q == 0 ? 64 : (quant < 2368 ? 84 : 80);
|
|
default:
|
|
assert(0 && "bit_depth should be VPX_BITS_8, VPX_BITS_10 or VPX_BITS_12");
|
|
return -1;
|
|
}
|
|
#else
|
|
(void) bit_depth;
|
|
return q == 0 ? 64 : (quant < 148 ? 84 : 80);
|
|
#endif
|
|
}
|
|
|
|
void vp9_init_quantizer(VP9_COMP *cpi) {
|
|
VP9_COMMON *const cm = &cpi->common;
|
|
QUANTS *const quants = &cpi->quants;
|
|
int i, q, quant;
|
|
|
|
for (q = 0; q < QINDEX_RANGE; q++) {
|
|
const int qzbin_factor = get_qzbin_factor(q, cm->bit_depth);
|
|
const int qrounding_factor = q == 0 ? 64 : 48;
|
|
|
|
for (i = 0; i < 2; ++i) {
|
|
int qrounding_factor_fp = i == 0 ? 48 : 42;
|
|
if (q == 0)
|
|
qrounding_factor_fp = 64;
|
|
|
|
// y
|
|
quant = i == 0 ? vp9_dc_quant(q, cm->y_dc_delta_q, cm->bit_depth)
|
|
: vp9_ac_quant(q, 0, cm->bit_depth);
|
|
invert_quant(&quants->y_quant[q][i], &quants->y_quant_shift[q][i], quant);
|
|
quants->y_quant_fp[q][i] = (1 << 16) / quant;
|
|
quants->y_round_fp[q][i] = (qrounding_factor_fp * quant) >> 7;
|
|
quants->y_zbin[q][i] = ROUND_POWER_OF_TWO(qzbin_factor * quant, 7);
|
|
quants->y_round[q][i] = (qrounding_factor * quant) >> 7;
|
|
cpi->y_dequant[q][i] = quant;
|
|
|
|
// uv
|
|
quant = i == 0 ? vp9_dc_quant(q, cm->uv_dc_delta_q, cm->bit_depth)
|
|
: vp9_ac_quant(q, cm->uv_ac_delta_q, cm->bit_depth);
|
|
invert_quant(&quants->uv_quant[q][i],
|
|
&quants->uv_quant_shift[q][i], quant);
|
|
quants->uv_quant_fp[q][i] = (1 << 16) / quant;
|
|
quants->uv_round_fp[q][i] = (qrounding_factor_fp * quant) >> 7;
|
|
quants->uv_zbin[q][i] = ROUND_POWER_OF_TWO(qzbin_factor * quant, 7);
|
|
quants->uv_round[q][i] = (qrounding_factor * quant) >> 7;
|
|
cpi->uv_dequant[q][i] = quant;
|
|
}
|
|
|
|
for (i = 2; i < 8; i++) {
|
|
quants->y_quant[q][i] = quants->y_quant[q][1];
|
|
quants->y_quant_fp[q][i] = quants->y_quant_fp[q][1];
|
|
quants->y_round_fp[q][i] = quants->y_round_fp[q][1];
|
|
quants->y_quant_shift[q][i] = quants->y_quant_shift[q][1];
|
|
quants->y_zbin[q][i] = quants->y_zbin[q][1];
|
|
quants->y_round[q][i] = quants->y_round[q][1];
|
|
cpi->y_dequant[q][i] = cpi->y_dequant[q][1];
|
|
|
|
quants->uv_quant[q][i] = quants->uv_quant[q][1];
|
|
quants->uv_quant_fp[q][i] = quants->uv_quant_fp[q][1];
|
|
quants->uv_round_fp[q][i] = quants->uv_round_fp[q][1];
|
|
quants->uv_quant_shift[q][i] = quants->uv_quant_shift[q][1];
|
|
quants->uv_zbin[q][i] = quants->uv_zbin[q][1];
|
|
quants->uv_round[q][i] = quants->uv_round[q][1];
|
|
cpi->uv_dequant[q][i] = cpi->uv_dequant[q][1];
|
|
}
|
|
}
|
|
}
|
|
|
|
void vp9_init_plane_quantizers(VP9_COMP *cpi, MACROBLOCK *x) {
|
|
const VP9_COMMON *const cm = &cpi->common;
|
|
MACROBLOCKD *const xd = &x->e_mbd;
|
|
QUANTS *const quants = &cpi->quants;
|
|
const int segment_id = xd->mi[0].src_mi->mbmi.segment_id;
|
|
const int qindex = vp9_get_qindex(&cm->seg, segment_id, cm->base_qindex);
|
|
const int rdmult = vp9_compute_rd_mult(cpi, qindex + cm->y_dc_delta_q);
|
|
int i;
|
|
|
|
// Y
|
|
x->plane[0].quant = quants->y_quant[qindex];
|
|
x->plane[0].quant_fp = quants->y_quant_fp[qindex];
|
|
x->plane[0].round_fp = quants->y_round_fp[qindex];
|
|
x->plane[0].quant_shift = quants->y_quant_shift[qindex];
|
|
x->plane[0].zbin = quants->y_zbin[qindex];
|
|
x->plane[0].round = quants->y_round[qindex];
|
|
xd->plane[0].dequant = cpi->y_dequant[qindex];
|
|
|
|
x->plane[0].quant_thred[0] = x->plane[0].zbin[0] * x->plane[0].zbin[0];
|
|
x->plane[0].quant_thred[1] = x->plane[0].zbin[1] * x->plane[0].zbin[1];
|
|
|
|
// UV
|
|
for (i = 1; i < 3; i++) {
|
|
x->plane[i].quant = quants->uv_quant[qindex];
|
|
x->plane[i].quant_fp = quants->uv_quant_fp[qindex];
|
|
x->plane[i].round_fp = quants->uv_round_fp[qindex];
|
|
x->plane[i].quant_shift = quants->uv_quant_shift[qindex];
|
|
x->plane[i].zbin = quants->uv_zbin[qindex];
|
|
x->plane[i].round = quants->uv_round[qindex];
|
|
xd->plane[i].dequant = cpi->uv_dequant[qindex];
|
|
|
|
x->plane[i].quant_thred[0] = x->plane[i].zbin[0] * x->plane[i].zbin[0];
|
|
x->plane[i].quant_thred[1] = x->plane[i].zbin[1] * x->plane[i].zbin[1];
|
|
}
|
|
|
|
x->skip_block = vp9_segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP);
|
|
x->q_index = qindex;
|
|
|
|
x->errorperbit = rdmult >> 6;
|
|
x->errorperbit += (x->errorperbit == 0);
|
|
|
|
vp9_initialize_me_consts(cpi, x, x->q_index);
|
|
}
|
|
|
|
void vp9_frame_init_quantizer(VP9_COMP *cpi) {
|
|
vp9_init_plane_quantizers(cpi, &cpi->td.mb);
|
|
}
|
|
|
|
void vp9_set_quantizer(VP9_COMMON *cm, int q) {
|
|
// quantizer has to be reinitialized with vp9_init_quantizer() if any
|
|
// delta_q changes.
|
|
cm->base_qindex = q;
|
|
cm->y_dc_delta_q = 0;
|
|
cm->uv_dc_delta_q = 0;
|
|
cm->uv_ac_delta_q = 0;
|
|
}
|
|
|
|
// Table that converts 0-63 Q-range values passed in outside to the Qindex
|
|
// range used internally.
|
|
static const int quantizer_to_qindex[] = {
|
|
0, 4, 8, 12, 16, 20, 24, 28,
|
|
32, 36, 40, 44, 48, 52, 56, 60,
|
|
64, 68, 72, 76, 80, 84, 88, 92,
|
|
96, 100, 104, 108, 112, 116, 120, 124,
|
|
128, 132, 136, 140, 144, 148, 152, 156,
|
|
160, 164, 168, 172, 176, 180, 184, 188,
|
|
192, 196, 200, 204, 208, 212, 216, 220,
|
|
224, 228, 232, 236, 240, 244, 249, 255,
|
|
};
|
|
|
|
int vp9_quantizer_to_qindex(int quantizer) {
|
|
return quantizer_to_qindex[quantizer];
|
|
}
|
|
|
|
int vp9_qindex_to_quantizer(int qindex) {
|
|
int quantizer;
|
|
|
|
for (quantizer = 0; quantizer < 64; ++quantizer)
|
|
if (quantizer_to_qindex[quantizer] >= qindex)
|
|
return quantizer;
|
|
|
|
return 63;
|
|
}
|