119 строки
5.2 KiB
C
119 строки
5.2 KiB
C
/*
|
|
* Copyright (c) 2016, Alliance for Open Media. All rights reserved
|
|
*
|
|
* This source code is subject to the terms of the BSD 2 Clause License and
|
|
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
|
|
* was not distributed with this source code in the LICENSE file, you can
|
|
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
|
|
* Media Patent License 1.0 was not distributed with this source code in the
|
|
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
|
|
*/
|
|
|
|
#include <arm_neon.h>
|
|
|
|
#include <math.h>
|
|
|
|
#include "aom_mem/aom_mem.h"
|
|
|
|
#include "av1/common/quant_common.h"
|
|
#include "av1/common/seg_common.h"
|
|
|
|
#include "av1/encoder/encoder.h"
|
|
#include "av1/encoder/quantize.h"
|
|
#include "av1/encoder/rd.h"
|
|
|
|
void av1_quantize_fp_neon(const int16_t *coeff_ptr, intptr_t count,
|
|
int skip_block, const int16_t *zbin_ptr,
|
|
const int16_t *round_ptr, const int16_t *quant_ptr,
|
|
const int16_t *quant_shift_ptr, int16_t *qcoeff_ptr,
|
|
int16_t *dqcoeff_ptr, const int16_t *dequant_ptr,
|
|
uint16_t *eob_ptr, const int16_t *scan,
|
|
const int16_t *iscan) {
|
|
// TODO(jingning) Decide the need of these arguments after the
|
|
// quantization process is completed.
|
|
(void)zbin_ptr;
|
|
(void)quant_shift_ptr;
|
|
(void)scan;
|
|
|
|
if (!skip_block) {
|
|
// Quantization pass: All coefficients with index >= zero_flag are
|
|
// skippable. Note: zero_flag can be zero.
|
|
int i;
|
|
const int16x8_t v_zero = vdupq_n_s16(0);
|
|
const int16x8_t v_one = vdupq_n_s16(1);
|
|
int16x8_t v_eobmax_76543210 = vdupq_n_s16(-1);
|
|
int16x8_t v_round = vmovq_n_s16(round_ptr[1]);
|
|
int16x8_t v_quant = vmovq_n_s16(quant_ptr[1]);
|
|
int16x8_t v_dequant = vmovq_n_s16(dequant_ptr[1]);
|
|
// adjust for dc
|
|
v_round = vsetq_lane_s16(round_ptr[0], v_round, 0);
|
|
v_quant = vsetq_lane_s16(quant_ptr[0], v_quant, 0);
|
|
v_dequant = vsetq_lane_s16(dequant_ptr[0], v_dequant, 0);
|
|
// process dc and the first seven ac coeffs
|
|
{
|
|
const int16x8_t v_iscan = vld1q_s16(&iscan[0]);
|
|
const int16x8_t v_coeff = vld1q_s16(&coeff_ptr[0]);
|
|
const int16x8_t v_coeff_sign = vshrq_n_s16(v_coeff, 15);
|
|
const int16x8_t v_tmp = vabaq_s16(v_round, v_coeff, v_zero);
|
|
const int32x4_t v_tmp_lo =
|
|
vmull_s16(vget_low_s16(v_tmp), vget_low_s16(v_quant));
|
|
const int32x4_t v_tmp_hi =
|
|
vmull_s16(vget_high_s16(v_tmp), vget_high_s16(v_quant));
|
|
const int16x8_t v_tmp2 =
|
|
vcombine_s16(vshrn_n_s32(v_tmp_lo, 16), vshrn_n_s32(v_tmp_hi, 16));
|
|
const uint16x8_t v_nz_mask = vceqq_s16(v_tmp2, v_zero);
|
|
const int16x8_t v_iscan_plus1 = vaddq_s16(v_iscan, v_one);
|
|
const int16x8_t v_nz_iscan = vbslq_s16(v_nz_mask, v_zero, v_iscan_plus1);
|
|
const int16x8_t v_qcoeff_a = veorq_s16(v_tmp2, v_coeff_sign);
|
|
const int16x8_t v_qcoeff = vsubq_s16(v_qcoeff_a, v_coeff_sign);
|
|
const int16x8_t v_dqcoeff = vmulq_s16(v_qcoeff, v_dequant);
|
|
v_eobmax_76543210 = vmaxq_s16(v_eobmax_76543210, v_nz_iscan);
|
|
vst1q_s16(&qcoeff_ptr[0], v_qcoeff);
|
|
vst1q_s16(&dqcoeff_ptr[0], v_dqcoeff);
|
|
v_round = vmovq_n_s16(round_ptr[1]);
|
|
v_quant = vmovq_n_s16(quant_ptr[1]);
|
|
v_dequant = vmovq_n_s16(dequant_ptr[1]);
|
|
}
|
|
// now process the rest of the ac coeffs
|
|
for (i = 8; i < count; i += 8) {
|
|
const int16x8_t v_iscan = vld1q_s16(&iscan[i]);
|
|
const int16x8_t v_coeff = vld1q_s16(&coeff_ptr[i]);
|
|
const int16x8_t v_coeff_sign = vshrq_n_s16(v_coeff, 15);
|
|
const int16x8_t v_tmp = vabaq_s16(v_round, v_coeff, v_zero);
|
|
const int32x4_t v_tmp_lo =
|
|
vmull_s16(vget_low_s16(v_tmp), vget_low_s16(v_quant));
|
|
const int32x4_t v_tmp_hi =
|
|
vmull_s16(vget_high_s16(v_tmp), vget_high_s16(v_quant));
|
|
const int16x8_t v_tmp2 =
|
|
vcombine_s16(vshrn_n_s32(v_tmp_lo, 16), vshrn_n_s32(v_tmp_hi, 16));
|
|
const uint16x8_t v_nz_mask = vceqq_s16(v_tmp2, v_zero);
|
|
const int16x8_t v_iscan_plus1 = vaddq_s16(v_iscan, v_one);
|
|
const int16x8_t v_nz_iscan = vbslq_s16(v_nz_mask, v_zero, v_iscan_plus1);
|
|
const int16x8_t v_qcoeff_a = veorq_s16(v_tmp2, v_coeff_sign);
|
|
const int16x8_t v_qcoeff = vsubq_s16(v_qcoeff_a, v_coeff_sign);
|
|
const int16x8_t v_dqcoeff = vmulq_s16(v_qcoeff, v_dequant);
|
|
v_eobmax_76543210 = vmaxq_s16(v_eobmax_76543210, v_nz_iscan);
|
|
vst1q_s16(&qcoeff_ptr[i], v_qcoeff);
|
|
vst1q_s16(&dqcoeff_ptr[i], v_dqcoeff);
|
|
}
|
|
{
|
|
const int16x4_t v_eobmax_3210 = vmax_s16(
|
|
vget_low_s16(v_eobmax_76543210), vget_high_s16(v_eobmax_76543210));
|
|
const int64x1_t v_eobmax_xx32 =
|
|
vshr_n_s64(vreinterpret_s64_s16(v_eobmax_3210), 32);
|
|
const int16x4_t v_eobmax_tmp =
|
|
vmax_s16(v_eobmax_3210, vreinterpret_s16_s64(v_eobmax_xx32));
|
|
const int64x1_t v_eobmax_xxx3 =
|
|
vshr_n_s64(vreinterpret_s64_s16(v_eobmax_tmp), 16);
|
|
const int16x4_t v_eobmax_final =
|
|
vmax_s16(v_eobmax_tmp, vreinterpret_s16_s64(v_eobmax_xxx3));
|
|
|
|
*eob_ptr = (uint16_t)vget_lane_s16(v_eobmax_final, 0);
|
|
}
|
|
} else {
|
|
memset(qcoeff_ptr, 0, count * sizeof(int16_t));
|
|
memset(dqcoeff_ptr, 0, count * sizeof(int16_t));
|
|
*eob_ptr = 0;
|
|
}
|
|
}
|