| /* |
| * Copyright (c) 2014 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 <arm_neon.h> |
| #include <assert.h> |
| #include <math.h> |
| |
| #include "./vpx_config.h" |
| #include "vpx_mem/vpx_mem.h" |
| |
| #include "vp9/common/vp9_quant_common.h" |
| #include "vp9/common/vp9_seg_common.h" |
| |
| #include "vp9/encoder/vp9_encoder.h" |
| #include "vp9/encoder/vp9_quantize.h" |
| #include "vp9/encoder/vp9_rd.h" |
| |
| #include "vpx_dsp/arm/idct_neon.h" |
| #include "vpx_dsp/arm/mem_neon.h" |
| #include "vpx_dsp/vpx_dsp_common.h" |
| |
| static INLINE void calculate_dqcoeff_and_store(const int16x8_t qcoeff, |
| const int16x8_t dequant, |
| tran_low_t *dqcoeff) { |
| const int32x4_t dqcoeff_0 = |
| vmull_s16(vget_low_s16(qcoeff), vget_low_s16(dequant)); |
| const int32x4_t dqcoeff_1 = |
| vmull_s16(vget_high_s16(qcoeff), vget_high_s16(dequant)); |
| |
| #if CONFIG_VP9_HIGHBITDEPTH |
| vst1q_s32(dqcoeff, dqcoeff_0); |
| vst1q_s32(dqcoeff + 4, dqcoeff_1); |
| #else |
| vst1q_s16(dqcoeff, vcombine_s16(vmovn_s32(dqcoeff_0), vmovn_s32(dqcoeff_1))); |
| #endif // CONFIG_VP9_HIGHBITDEPTH |
| } |
| |
| void vp9_quantize_fp_neon(const tran_low_t *coeff_ptr, intptr_t count, |
| int skip_block, const int16_t *round_ptr, |
| const int16_t *quant_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) { |
| // 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]); |
| |
| (void)scan; |
| (void)skip_block; |
| assert(!skip_block); |
| |
| // 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 = load_tran_low_to_s16q(coeff_ptr); |
| const int16x8_t v_coeff_sign = vshrq_n_s16(v_coeff, 15); |
| const int16x8_t v_abs = vabsq_s16(v_coeff); |
| const int16x8_t v_tmp = vqaddq_s16(v_abs, v_round); |
| 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); |
| calculate_dqcoeff_and_store(v_qcoeff, v_dequant, dqcoeff_ptr); |
| v_eobmax_76543210 = vmaxq_s16(v_eobmax_76543210, v_nz_iscan); |
| store_s16q_to_tran_low(qcoeff_ptr, v_qcoeff); |
| 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 = load_tran_low_to_s16q(coeff_ptr + i); |
| const int16x8_t v_coeff_sign = vshrq_n_s16(v_coeff, 15); |
| const int16x8_t v_abs = vabsq_s16(v_coeff); |
| const int16x8_t v_tmp = vqaddq_s16(v_abs, v_round); |
| 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); |
| calculate_dqcoeff_and_store(v_qcoeff, v_dequant, dqcoeff_ptr + i); |
| v_eobmax_76543210 = vmaxq_s16(v_eobmax_76543210, v_nz_iscan); |
| store_s16q_to_tran_low(qcoeff_ptr + i, v_qcoeff); |
| } |
| #ifdef __aarch64__ |
| *eob_ptr = vmaxvq_s16(v_eobmax_76543210); |
| #else |
| { |
| 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); |
| } |
| #endif // __aarch64__ |
| } |
| |
| static INLINE int32x4_t extract_sign_bit(int32x4_t a) { |
| return vreinterpretq_s32_u32(vshrq_n_u32(vreinterpretq_u32_s32(a), 31)); |
| } |
| |
| void vp9_quantize_fp_32x32_neon(const tran_low_t *coeff_ptr, intptr_t count, |
| int skip_block, const int16_t *round_ptr, |
| const int16_t *quant_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 int16x8_t one = vdupq_n_s16(1); |
| const int16x8_t neg_one = vdupq_n_s16(-1); |
| |
| // ROUND_POWER_OF_TWO(round_ptr[], 1) |
| const int16x8_t round = vrshrq_n_s16(vld1q_s16(round_ptr), 1); |
| const int16x8_t quant = vld1q_s16(quant_ptr); |
| const int16x4_t dequant = vld1_s16(dequant_ptr); |
| // dequant >> 2 is used similar to zbin as a threshold. |
| const int16x8_t dequant_thresh = vshrq_n_s16(vld1q_s16(dequant_ptr), 2); |
| |
| // Process dc and the first seven ac coeffs. |
| const uint16x8_t v_iscan = |
| vreinterpretq_u16_s16(vaddq_s16(vld1q_s16(iscan), one)); |
| const int16x8_t coeff = load_tran_low_to_s16q(coeff_ptr); |
| const int16x8_t coeff_sign = vshrq_n_s16(coeff, 15); |
| const int16x8_t coeff_abs = vabsq_s16(coeff); |
| const int16x8_t dequant_mask = |
| vreinterpretq_s16_u16(vcgeq_s16(coeff_abs, dequant_thresh)); |
| |
| int16x8_t qcoeff = vqaddq_s16(coeff_abs, round); |
| int32x4_t dqcoeff_0, dqcoeff_1; |
| uint16x8_t eob_max; |
| (void)scan; |
| (void)count; |
| (void)skip_block; |
| assert(!skip_block); |
| |
| // coeff * quant_ptr[]) >> 15 |
| qcoeff = vqdmulhq_s16(qcoeff, quant); |
| |
| // Restore sign. |
| qcoeff = veorq_s16(qcoeff, coeff_sign); |
| qcoeff = vsubq_s16(qcoeff, coeff_sign); |
| qcoeff = vandq_s16(qcoeff, dequant_mask); |
| |
| // qcoeff * dequant[] / 2 |
| dqcoeff_0 = vmull_s16(vget_low_s16(qcoeff), dequant); |
| dqcoeff_1 = vmull_n_s16(vget_high_s16(qcoeff), dequant_ptr[1]); |
| |
| // Add 1 if negative to round towards zero because the C uses division. |
| dqcoeff_0 = vaddq_s32(dqcoeff_0, extract_sign_bit(dqcoeff_0)); |
| dqcoeff_1 = vaddq_s32(dqcoeff_1, extract_sign_bit(dqcoeff_1)); |
| #if CONFIG_VP9_HIGHBITDEPTH |
| vst1q_s32(dqcoeff_ptr, vshrq_n_s32(dqcoeff_0, 1)); |
| vst1q_s32(dqcoeff_ptr + 4, vshrq_n_s32(dqcoeff_1, 1)); |
| #else |
| store_s16q_to_tran_low(dqcoeff_ptr, vcombine_s16(vshrn_n_s32(dqcoeff_0, 1), |
| vshrn_n_s32(dqcoeff_1, 1))); |
| #endif |
| |
| eob_max = vandq_u16(vtstq_s16(qcoeff, neg_one), v_iscan); |
| |
| store_s16q_to_tran_low(qcoeff_ptr, qcoeff); |
| |
| iscan += 8; |
| coeff_ptr += 8; |
| qcoeff_ptr += 8; |
| dqcoeff_ptr += 8; |
| |
| { |
| int i; |
| const int16x8_t round = vrshrq_n_s16(vmovq_n_s16(round_ptr[1]), 1); |
| const int16x8_t quant = vmovq_n_s16(quant_ptr[1]); |
| const int16x8_t dequant_thresh = |
| vshrq_n_s16(vmovq_n_s16(dequant_ptr[1]), 2); |
| |
| // Process the rest of the ac coeffs. |
| for (i = 8; i < 32 * 32; i += 8) { |
| const uint16x8_t v_iscan = |
| vreinterpretq_u16_s16(vaddq_s16(vld1q_s16(iscan), one)); |
| const int16x8_t coeff = load_tran_low_to_s16q(coeff_ptr); |
| const int16x8_t coeff_sign = vshrq_n_s16(coeff, 15); |
| const int16x8_t coeff_abs = vabsq_s16(coeff); |
| const int16x8_t dequant_mask = |
| vreinterpretq_s16_u16(vcgeq_s16(coeff_abs, dequant_thresh)); |
| |
| int16x8_t qcoeff = vqaddq_s16(coeff_abs, round); |
| int32x4_t dqcoeff_0, dqcoeff_1; |
| |
| qcoeff = vqdmulhq_s16(qcoeff, quant); |
| qcoeff = veorq_s16(qcoeff, coeff_sign); |
| qcoeff = vsubq_s16(qcoeff, coeff_sign); |
| qcoeff = vandq_s16(qcoeff, dequant_mask); |
| |
| dqcoeff_0 = vmull_n_s16(vget_low_s16(qcoeff), dequant_ptr[1]); |
| dqcoeff_1 = vmull_n_s16(vget_high_s16(qcoeff), dequant_ptr[1]); |
| |
| dqcoeff_0 = vaddq_s32(dqcoeff_0, extract_sign_bit(dqcoeff_0)); |
| dqcoeff_1 = vaddq_s32(dqcoeff_1, extract_sign_bit(dqcoeff_1)); |
| |
| #if CONFIG_VP9_HIGHBITDEPTH |
| vst1q_s32(dqcoeff_ptr, vshrq_n_s32(dqcoeff_0, 1)); |
| vst1q_s32(dqcoeff_ptr + 4, vshrq_n_s32(dqcoeff_1, 1)); |
| #else |
| store_s16q_to_tran_low( |
| dqcoeff_ptr, |
| vcombine_s16(vshrn_n_s32(dqcoeff_0, 1), vshrn_n_s32(dqcoeff_1, 1))); |
| #endif |
| |
| eob_max = |
| vmaxq_u16(eob_max, vandq_u16(vtstq_s16(qcoeff, neg_one), v_iscan)); |
| |
| store_s16q_to_tran_low(qcoeff_ptr, qcoeff); |
| |
| iscan += 8; |
| coeff_ptr += 8; |
| qcoeff_ptr += 8; |
| dqcoeff_ptr += 8; |
| } |
| |
| #ifdef __aarch64__ |
| *eob_ptr = vmaxvq_u16(eob_max); |
| #else |
| { |
| const uint16x4_t eob_max_0 = |
| vmax_u16(vget_low_u16(eob_max), vget_high_u16(eob_max)); |
| const uint16x4_t eob_max_1 = vpmax_u16(eob_max_0, eob_max_0); |
| const uint16x4_t eob_max_2 = vpmax_u16(eob_max_1, eob_max_1); |
| vst1_lane_u16(eob_ptr, eob_max_2, 0); |
| } |
| #endif // __aarch64__ |
| } |
| } |
