| /* |
| * 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 VPX_FORCE_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 |
| } |
| |
| static VPX_FORCE_INLINE int16x8_t get_max_lane_eob(const int16_t *iscan_ptr, |
| int16x8_t v_eobmax, |
| uint16x8_t v_nz_mask) { |
| const int16x8_t v_iscan = vld1q_s16(&iscan_ptr[0]); |
| const int16x8_t v_nz_iscan = vbslq_s16(v_nz_mask, vdupq_n_s16(0), v_iscan); |
| return vmaxq_s16(v_eobmax, v_nz_iscan); |
| } |
| |
| static VPX_FORCE_INLINE uint16_t get_max_eob(int16x8_t v_eobmax) { |
| #if VPX_ARCH_AARCH64 |
| return (uint16_t)vmaxvq_s16(v_eobmax); |
| #else |
| const int16x4_t v_eobmax_3210 = |
| vmax_s16(vget_low_s16(v_eobmax), vget_high_s16(v_eobmax)); |
| 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)); |
| |
| return (uint16_t)vget_lane_s16(v_eobmax_final, 0); |
| #endif // VPX_ARCH_AARCH64 |
| } |
| |
| static VPX_FORCE_INLINE void load_fp_values(const int16_t *round_ptr, |
| const int16_t *quant_ptr, |
| const int16_t *dequant_ptr, |
| int16x8_t *round, int16x8_t *quant, |
| int16x8_t *dequant) { |
| *round = vld1q_s16(round_ptr); |
| *quant = vld1q_s16(quant_ptr); |
| *dequant = vld1q_s16(dequant_ptr); |
| } |
| |
| static VPX_FORCE_INLINE void update_fp_values(int16x8_t *v_round, |
| int16x8_t *v_quant, |
| int16x8_t *v_dequant) { |
| #if VPX_ARCH_AARCH64 |
| *v_round = vdupq_laneq_s16(*v_round, 1); |
| *v_quant = vdupq_laneq_s16(*v_quant, 1); |
| *v_dequant = vdupq_laneq_s16(*v_dequant, 1); |
| #else |
| *v_round = vdupq_lane_s16(vget_low_s16(*v_round), 1); |
| *v_quant = vdupq_lane_s16(vget_low_s16(*v_quant), 1); |
| *v_dequant = vdupq_lane_s16(vget_low_s16(*v_dequant), 1); |
| #endif |
| } |
| |
| static VPX_FORCE_INLINE void quantize_fp_8( |
| const int16x8_t *v_round, const int16x8_t *v_quant, |
| const int16x8_t *v_dequant, const tran_low_t *coeff_ptr, |
| const int16_t *iscan_ptr, tran_low_t *qcoeff_ptr, tran_low_t *dqcoeff_ptr, |
| int16x8_t *v_eobmax) { |
| const int16x8_t v_zero = vdupq_n_s16(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_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); |
| store_s16q_to_tran_low(qcoeff_ptr, v_qcoeff); |
| |
| *v_eobmax = get_max_lane_eob(iscan_ptr, *v_eobmax, v_nz_mask); |
| } |
| |
| void vp9_quantize_fp_neon(const tran_low_t *coeff_ptr, intptr_t count, |
| 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; |
| int16x8_t v_eobmax = vdupq_n_s16(-1); |
| int16x8_t v_round, v_quant, v_dequant; |
| (void)scan; |
| |
| load_fp_values(round_ptr, quant_ptr, dequant_ptr, &v_round, &v_quant, |
| &v_dequant); |
| // process dc and the first seven ac coeffs |
| quantize_fp_8(&v_round, &v_quant, &v_dequant, coeff_ptr, iscan, qcoeff_ptr, |
| dqcoeff_ptr, &v_eobmax); |
| |
| // now process the rest of the ac coeffs |
| update_fp_values(&v_round, &v_quant, &v_dequant); |
| for (i = 8; i < count; i += 8) { |
| quantize_fp_8(&v_round, &v_quant, &v_dequant, coeff_ptr + i, iscan + i, |
| qcoeff_ptr + i, dqcoeff_ptr + i, &v_eobmax); |
| } |
| |
| *eob_ptr = get_max_eob(v_eobmax); |
| } |
| |
| static INLINE int32x4_t extract_sign_bit(int32x4_t a) { |
| return vreinterpretq_s32_u32(vshrq_n_u32(vreinterpretq_u32_s32(a), 31)); |
| } |
| |
| static VPX_FORCE_INLINE void quantize_fp_32x32_8( |
| const int16x8_t *v_round, const int16x8_t *v_quant, |
| const int16x8_t *v_dequant, const int16x8_t *dequant_thresh, |
| const tran_low_t *coeff_ptr, const int16_t *iscan_ptr, |
| tran_low_t *qcoeff_ptr, tran_low_t *dqcoeff_ptr, int16x8_t *v_eobmax) { |
| 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_coeff_abs = vabsq_s16(v_coeff); |
| const int16x8_t v_thr_mask = |
| vreinterpretq_s16_u16(vcgeq_s16(v_coeff_abs, *dequant_thresh)); |
| const int16x8_t v_tmp_rnd = |
| vandq_s16(vqaddq_s16(v_coeff_abs, *v_round), v_thr_mask); |
| const int16x8_t v_abs_qcoeff = vqdmulhq_s16(v_tmp_rnd, *v_quant); |
| const int16x8_t v_qcoeff = |
| vsubq_s16(veorq_s16(v_abs_qcoeff, v_coeff_sign), v_coeff_sign); |
| const uint16x8_t v_nz_mask = vceqq_s16(v_abs_qcoeff, vdupq_n_s16(0)); |
| |
| int32x4_t dqcoeff_0, dqcoeff_1; |
| dqcoeff_0 = vmull_s16(vget_low_s16(v_qcoeff), vget_low_s16(*v_dequant)); |
| dqcoeff_1 = vmull_s16(vget_high_s16(v_qcoeff), vget_high_s16(*v_dequant)); |
| // 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 |
| |
| store_s16q_to_tran_low(qcoeff_ptr, v_qcoeff); |
| |
| *v_eobmax = get_max_lane_eob(iscan_ptr, *v_eobmax, v_nz_mask); |
| } |
| |
| void vp9_quantize_fp_32x32_neon(const tran_low_t *coeff_ptr, intptr_t count, |
| 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) { |
| int16x8_t eob_max = vdupq_n_s16(-1); |
| // ROUND_POWER_OF_TWO(round_ptr[], 1) |
| int16x8_t round = vrshrq_n_s16(vld1q_s16(round_ptr), 1); |
| int16x8_t quant = vld1q_s16(quant_ptr); |
| int16x8_t dequant = vld1q_s16(dequant_ptr); |
| // dequant >> 2 is used similar to zbin as a threshold. |
| int16x8_t dequant_thresh = vshrq_n_s16(vld1q_s16(dequant_ptr), 2); |
| int i; |
| |
| (void)scan; |
| (void)count; |
| |
| // Process dc and the first seven ac coeffs. |
| quantize_fp_32x32_8(&round, &quant, &dequant, &dequant_thresh, coeff_ptr, |
| iscan, qcoeff_ptr, dqcoeff_ptr, &eob_max); |
| |
| update_fp_values(&round, &quant, &dequant); |
| dequant_thresh = vdupq_lane_s16(vget_low_s16(dequant_thresh), 1); |
| |
| iscan += 8; |
| coeff_ptr += 8; |
| qcoeff_ptr += 8; |
| dqcoeff_ptr += 8; |
| |
| // Process the rest of the ac coeffs. |
| for (i = 8; i < 32 * 32; i += 8) { |
| quantize_fp_32x32_8(&round, &quant, &dequant, &dequant_thresh, coeff_ptr, |
| iscan, qcoeff_ptr, dqcoeff_ptr, &eob_max); |
| |
| iscan += 8; |
| coeff_ptr += 8; |
| qcoeff_ptr += 8; |
| dqcoeff_ptr += 8; |
| } |
| |
| *eob_ptr = get_max_eob(eob_max); |
| } |
| |
| #if CONFIG_VP9_HIGHBITDEPTH |
| static VPX_FORCE_INLINE uint16x4_t |
| highbd_quantize_fp_4(const tran_low_t *coeff_ptr, tran_low_t *qcoeff_ptr, |
| tran_low_t *dqcoeff_ptr, int32x4_t v_quant_s32, |
| int32x4_t v_dequant_s32, int32x4_t v_round_s32) { |
| const int32x4_t v_coeff = vld1q_s32(coeff_ptr); |
| const int32x4_t v_coeff_sign = |
| vreinterpretq_s32_u32(vcltq_s32(v_coeff, vdupq_n_s32(0))); |
| const int32x4_t v_abs_coeff = vabsq_s32(v_coeff); |
| const int32x4_t v_tmp = vaddq_s32(v_abs_coeff, v_round_s32); |
| // const int abs_qcoeff = (int)((tmp * quant) >> 16); |
| const int32x4_t v_abs_qcoeff = vqdmulhq_s32(v_tmp, v_quant_s32); |
| // qcoeff_ptr[rc] = (tran_low_t)((abs_qcoeff ^ coeff_sign) - coeff_sign); |
| const int32x4_t v_qcoeff = |
| vsubq_s32(veorq_s32(v_abs_qcoeff, v_coeff_sign), v_coeff_sign); |
| const int32x4_t v_abs_dqcoeff = vmulq_s32(v_abs_qcoeff, v_dequant_s32); |
| // dqcoeff_ptr[rc] = (tran_low_t)((abs_dqcoeff ^ coeff_sign) - coeff_sign); |
| const int32x4_t v_dqcoeff = |
| vsubq_s32(veorq_s32(v_abs_dqcoeff, v_coeff_sign), v_coeff_sign); |
| |
| vst1q_s32(qcoeff_ptr, v_qcoeff); |
| vst1q_s32(dqcoeff_ptr, v_dqcoeff); |
| |
| // Packed nz_qcoeff_mask. Used to find eob. |
| return vmovn_u32(vceqq_s32(v_abs_qcoeff, vdupq_n_s32(0))); |
| } |
| |
| void vp9_highbd_quantize_fp_neon(const tran_low_t *coeff_ptr, intptr_t n_coeffs, |
| 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 int16x4_t v_zero = vdup_n_s16(0); |
| const int16x4_t v_quant = vld1_s16(quant_ptr); |
| const int16x4_t v_dequant = vld1_s16(dequant_ptr); |
| const int16x4_t v_round = vld1_s16(round_ptr); |
| int32x4_t v_round_s32 = vaddl_s16(v_round, v_zero); |
| int32x4_t v_quant_s32 = vshlq_n_s32(vaddl_s16(v_quant, v_zero), 15); |
| int32x4_t v_dequant_s32 = vaddl_s16(v_dequant, v_zero); |
| uint16x4_t v_mask_lo, v_mask_hi; |
| int16x8_t v_eobmax = vdupq_n_s16(-1); |
| |
| (void)scan; |
| |
| // DC and first 3 AC |
| v_mask_lo = highbd_quantize_fp_4(coeff_ptr, qcoeff_ptr, dqcoeff_ptr, |
| v_quant_s32, v_dequant_s32, v_round_s32); |
| |
| // overwrite the DC constants with AC constants |
| v_round_s32 = vdupq_lane_s32(vget_low_s32(v_round_s32), 1); |
| v_quant_s32 = vdupq_lane_s32(vget_low_s32(v_quant_s32), 1); |
| v_dequant_s32 = vdupq_lane_s32(vget_low_s32(v_dequant_s32), 1); |
| |
| // 4 more AC |
| v_mask_hi = |
| highbd_quantize_fp_4(coeff_ptr + 4, qcoeff_ptr + 4, dqcoeff_ptr + 4, |
| v_quant_s32, v_dequant_s32, v_round_s32); |
| |
| // Find the max lane eob for the first 8 coeffs. |
| v_eobmax = |
| get_max_lane_eob(iscan, v_eobmax, vcombine_u16(v_mask_lo, v_mask_hi)); |
| |
| n_coeffs -= 8; |
| do { |
| coeff_ptr += 8; |
| qcoeff_ptr += 8; |
| dqcoeff_ptr += 8; |
| iscan += 8; |
| v_mask_lo = highbd_quantize_fp_4(coeff_ptr, qcoeff_ptr, dqcoeff_ptr, |
| v_quant_s32, v_dequant_s32, v_round_s32); |
| v_mask_hi = |
| highbd_quantize_fp_4(coeff_ptr + 4, qcoeff_ptr + 4, dqcoeff_ptr + 4, |
| v_quant_s32, v_dequant_s32, v_round_s32); |
| // Find the max lane eob for 8 coeffs. |
| v_eobmax = |
| get_max_lane_eob(iscan, v_eobmax, vcombine_u16(v_mask_lo, v_mask_hi)); |
| n_coeffs -= 8; |
| } while (n_coeffs); |
| |
| *eob_ptr = get_max_eob(v_eobmax); |
| } |
| |
| static VPX_FORCE_INLINE uint16x4_t |
| highbd_quantize_fp_32x32_4(const tran_low_t *coeff_ptr, tran_low_t *qcoeff_ptr, |
| tran_low_t *dqcoeff_ptr, int32x4_t v_quant_s32, |
| int32x4_t v_dequant_s32, int32x4_t v_round_s32) { |
| const int32x4_t v_coeff = vld1q_s32(coeff_ptr); |
| const int32x4_t v_coeff_sign = |
| vreinterpretq_s32_u32(vcltq_s32(v_coeff, vdupq_n_s32(0))); |
| const int32x4_t v_abs_coeff = vabsq_s32(v_coeff); |
| // ((abs_coeff << (1 + log_scale)) >= dequant_ptr[rc01]) |
| const int32x4_t v_abs_coeff_scaled = vshlq_n_s32(v_abs_coeff, 2); |
| const uint32x4_t v_mask = vcgeq_s32(v_abs_coeff_scaled, v_dequant_s32); |
| // const int64_t tmp = vmask ? (int64_t)abs_coeff + log_scaled_round : 0 |
| const int32x4_t v_tmp = vandq_s32(vaddq_s32(v_abs_coeff, v_round_s32), |
| vreinterpretq_s32_u32(v_mask)); |
| // const int abs_qcoeff = (int)((tmp * quant) >> (16 - log_scale)); |
| const int32x4_t v_abs_qcoeff = |
| vqdmulhq_s32(vshlq_n_s32(v_tmp, 1), v_quant_s32); |
| // qcoeff_ptr[rc] = (tran_low_t)((abs_qcoeff ^ coeff_sign) - coeff_sign); |
| const int32x4_t v_qcoeff = |
| vsubq_s32(veorq_s32(v_abs_qcoeff, v_coeff_sign), v_coeff_sign); |
| // vshlq_s32 will shift right if shift value is negative. |
| const int32x4_t v_abs_dqcoeff = |
| vshrq_n_s32(vmulq_s32(v_abs_qcoeff, v_dequant_s32), 1); |
| // dqcoeff_ptr[rc] = (tran_low_t)((abs_dqcoeff ^ coeff_sign) - coeff_sign); |
| const int32x4_t v_dqcoeff = |
| vsubq_s32(veorq_s32(v_abs_dqcoeff, v_coeff_sign), v_coeff_sign); |
| |
| vst1q_s32(qcoeff_ptr, v_qcoeff); |
| vst1q_s32(dqcoeff_ptr, v_dqcoeff); |
| |
| // Packed nz_qcoeff_mask. Used to find eob. |
| return vmovn_u32(vceqq_s32(v_abs_qcoeff, vdupq_n_s32(0))); |
| } |
| |
| void vp9_highbd_quantize_fp_32x32_neon( |
| const tran_low_t *coeff_ptr, intptr_t n_coeffs, 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 int16x4_t v_quant = vld1_s16(quant_ptr); |
| const int16x4_t v_dequant = vld1_s16(dequant_ptr); |
| const int16x4_t v_zero = vdup_n_s16(0); |
| const int16x4_t v_round = |
| vqrdmulh_n_s16(vld1_s16(round_ptr), (int16_t)(1 << 14)); |
| int32x4_t v_round_s32 = vaddl_s16(v_round, v_zero); |
| int32x4_t v_quant_s32 = vshlq_n_s32(vaddl_s16(v_quant, v_zero), 15); |
| int32x4_t v_dequant_s32 = vaddl_s16(v_dequant, v_zero); |
| uint16x4_t v_mask_lo, v_mask_hi; |
| int16x8_t v_eobmax = vdupq_n_s16(-1); |
| |
| (void)scan; |
| |
| // DC and first 3 AC |
| v_mask_lo = |
| highbd_quantize_fp_32x32_4(coeff_ptr, qcoeff_ptr, dqcoeff_ptr, |
| v_quant_s32, v_dequant_s32, v_round_s32); |
| |
| // overwrite the DC constants with AC constants |
| v_round_s32 = vdupq_lane_s32(vget_low_s32(v_round_s32), 1); |
| v_quant_s32 = vdupq_lane_s32(vget_low_s32(v_quant_s32), 1); |
| v_dequant_s32 = vdupq_lane_s32(vget_low_s32(v_dequant_s32), 1); |
| |
| // 4 more AC |
| v_mask_hi = |
| highbd_quantize_fp_32x32_4(coeff_ptr + 4, qcoeff_ptr + 4, dqcoeff_ptr + 4, |
| v_quant_s32, v_dequant_s32, v_round_s32); |
| |
| // Find the max lane eob for the first 8 coeffs. |
| v_eobmax = |
| get_max_lane_eob(iscan, v_eobmax, vcombine_u16(v_mask_lo, v_mask_hi)); |
| |
| n_coeffs -= 8; |
| do { |
| coeff_ptr += 8; |
| qcoeff_ptr += 8; |
| dqcoeff_ptr += 8; |
| iscan += 8; |
| v_mask_lo = |
| highbd_quantize_fp_32x32_4(coeff_ptr, qcoeff_ptr, dqcoeff_ptr, |
| v_quant_s32, v_dequant_s32, v_round_s32); |
| v_mask_hi = highbd_quantize_fp_32x32_4(coeff_ptr + 4, qcoeff_ptr + 4, |
| dqcoeff_ptr + 4, v_quant_s32, |
| v_dequant_s32, v_round_s32); |
| // Find the max lane eob for 8 coeffs. |
| v_eobmax = |
| get_max_lane_eob(iscan, v_eobmax, vcombine_u16(v_mask_lo, v_mask_hi)); |
| n_coeffs -= 8; |
| } while (n_coeffs); |
| |
| *eob_ptr = get_max_eob(v_eobmax); |
| } |
| #endif // CONFIG_VP9_HIGHBITDEPTH |
