| /* |
| * 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 "./aom_config.h" |
| #include "aom_dsp/txfm_common.h" |
| |
| #define LOAD_FROM_TRANSPOSED(prev, first, second) \ |
| q14s16 = vld1q_s16(trans_buf + first * 8); \ |
| q13s16 = vld1q_s16(trans_buf + second * 8); |
| |
| #define LOAD_FROM_OUTPUT(prev, first, second, qA, qB) \ |
| qA = vld1q_s16(out + first * 32); \ |
| qB = vld1q_s16(out + second * 32); |
| |
| #define STORE_IN_OUTPUT(prev, first, second, qA, qB) \ |
| vst1q_s16(out + first * 32, qA); \ |
| vst1q_s16(out + second * 32, qB); |
| |
| #define STORE_COMBINE_CENTER_RESULTS(r10, r9) \ |
| __STORE_COMBINE_CENTER_RESULTS(r10, r9, stride, q6s16, q7s16, q8s16, q9s16); |
| static INLINE void __STORE_COMBINE_CENTER_RESULTS(uint8_t *p1, uint8_t *p2, |
| int stride, int16x8_t q6s16, |
| int16x8_t q7s16, |
| int16x8_t q8s16, |
| int16x8_t q9s16) { |
| int16x4_t d8s16, d9s16, d10s16, d11s16; |
| |
| d8s16 = vld1_s16((int16_t *)p1); |
| p1 += stride; |
| d11s16 = vld1_s16((int16_t *)p2); |
| p2 -= stride; |
| d9s16 = vld1_s16((int16_t *)p1); |
| d10s16 = vld1_s16((int16_t *)p2); |
| |
| q7s16 = vrshrq_n_s16(q7s16, 6); |
| q8s16 = vrshrq_n_s16(q8s16, 6); |
| q9s16 = vrshrq_n_s16(q9s16, 6); |
| q6s16 = vrshrq_n_s16(q6s16, 6); |
| |
| q7s16 = vreinterpretq_s16_u16( |
| vaddw_u8(vreinterpretq_u16_s16(q7s16), vreinterpret_u8_s16(d9s16))); |
| q8s16 = vreinterpretq_s16_u16( |
| vaddw_u8(vreinterpretq_u16_s16(q8s16), vreinterpret_u8_s16(d10s16))); |
| q9s16 = vreinterpretq_s16_u16( |
| vaddw_u8(vreinterpretq_u16_s16(q9s16), vreinterpret_u8_s16(d11s16))); |
| q6s16 = vreinterpretq_s16_u16( |
| vaddw_u8(vreinterpretq_u16_s16(q6s16), vreinterpret_u8_s16(d8s16))); |
| |
| d9s16 = vreinterpret_s16_u8(vqmovun_s16(q7s16)); |
| d10s16 = vreinterpret_s16_u8(vqmovun_s16(q8s16)); |
| d11s16 = vreinterpret_s16_u8(vqmovun_s16(q9s16)); |
| d8s16 = vreinterpret_s16_u8(vqmovun_s16(q6s16)); |
| |
| vst1_s16((int16_t *)p1, d9s16); |
| p1 -= stride; |
| vst1_s16((int16_t *)p2, d10s16); |
| p2 += stride; |
| vst1_s16((int16_t *)p1, d8s16); |
| vst1_s16((int16_t *)p2, d11s16); |
| return; |
| } |
| |
| #define STORE_COMBINE_EXTREME_RESULTS(r7, r6) \ |
| ; \ |
| __STORE_COMBINE_EXTREME_RESULTS(r7, r6, stride, q4s16, q5s16, q6s16, q7s16); |
| static INLINE void __STORE_COMBINE_EXTREME_RESULTS(uint8_t *p1, uint8_t *p2, |
| int stride, int16x8_t q4s16, |
| int16x8_t q5s16, |
| int16x8_t q6s16, |
| int16x8_t q7s16) { |
| int16x4_t d4s16, d5s16, d6s16, d7s16; |
| |
| d4s16 = vld1_s16((int16_t *)p1); |
| p1 += stride; |
| d7s16 = vld1_s16((int16_t *)p2); |
| p2 -= stride; |
| d5s16 = vld1_s16((int16_t *)p1); |
| d6s16 = vld1_s16((int16_t *)p2); |
| |
| q5s16 = vrshrq_n_s16(q5s16, 6); |
| q6s16 = vrshrq_n_s16(q6s16, 6); |
| q7s16 = vrshrq_n_s16(q7s16, 6); |
| q4s16 = vrshrq_n_s16(q4s16, 6); |
| |
| q5s16 = vreinterpretq_s16_u16( |
| vaddw_u8(vreinterpretq_u16_s16(q5s16), vreinterpret_u8_s16(d5s16))); |
| q6s16 = vreinterpretq_s16_u16( |
| vaddw_u8(vreinterpretq_u16_s16(q6s16), vreinterpret_u8_s16(d6s16))); |
| q7s16 = vreinterpretq_s16_u16( |
| vaddw_u8(vreinterpretq_u16_s16(q7s16), vreinterpret_u8_s16(d7s16))); |
| q4s16 = vreinterpretq_s16_u16( |
| vaddw_u8(vreinterpretq_u16_s16(q4s16), vreinterpret_u8_s16(d4s16))); |
| |
| d5s16 = vreinterpret_s16_u8(vqmovun_s16(q5s16)); |
| d6s16 = vreinterpret_s16_u8(vqmovun_s16(q6s16)); |
| d7s16 = vreinterpret_s16_u8(vqmovun_s16(q7s16)); |
| d4s16 = vreinterpret_s16_u8(vqmovun_s16(q4s16)); |
| |
| vst1_s16((int16_t *)p1, d5s16); |
| p1 -= stride; |
| vst1_s16((int16_t *)p2, d6s16); |
| p2 += stride; |
| vst1_s16((int16_t *)p2, d7s16); |
| vst1_s16((int16_t *)p1, d4s16); |
| return; |
| } |
| |
| #define DO_BUTTERFLY_STD(const_1, const_2, qA, qB) \ |
| DO_BUTTERFLY(q14s16, q13s16, const_1, const_2, qA, qB); |
| static INLINE void DO_BUTTERFLY(int16x8_t q14s16, int16x8_t q13s16, |
| int16_t first_const, int16_t second_const, |
| int16x8_t *qAs16, int16x8_t *qBs16) { |
| int16x4_t d30s16, d31s16; |
| int32x4_t q8s32, q9s32, q10s32, q11s32, q12s32, q15s32; |
| int16x4_t dCs16, dDs16, dAs16, dBs16; |
| |
| dCs16 = vget_low_s16(q14s16); |
| dDs16 = vget_high_s16(q14s16); |
| dAs16 = vget_low_s16(q13s16); |
| dBs16 = vget_high_s16(q13s16); |
| |
| d30s16 = vdup_n_s16(first_const); |
| d31s16 = vdup_n_s16(second_const); |
| |
| q8s32 = vmull_s16(dCs16, d30s16); |
| q10s32 = vmull_s16(dAs16, d31s16); |
| q9s32 = vmull_s16(dDs16, d30s16); |
| q11s32 = vmull_s16(dBs16, d31s16); |
| q12s32 = vmull_s16(dCs16, d31s16); |
| |
| q8s32 = vsubq_s32(q8s32, q10s32); |
| q9s32 = vsubq_s32(q9s32, q11s32); |
| |
| q10s32 = vmull_s16(dDs16, d31s16); |
| q11s32 = vmull_s16(dAs16, d30s16); |
| q15s32 = vmull_s16(dBs16, d30s16); |
| |
| q11s32 = vaddq_s32(q12s32, q11s32); |
| q10s32 = vaddq_s32(q10s32, q15s32); |
| |
| *qAs16 = vcombine_s16(vqrshrn_n_s32(q8s32, 14), vqrshrn_n_s32(q9s32, 14)); |
| *qBs16 = vcombine_s16(vqrshrn_n_s32(q11s32, 14), vqrshrn_n_s32(q10s32, 14)); |
| return; |
| } |
| |
| static INLINE void idct32_transpose_pair(int16_t *input, int16_t *t_buf) { |
| int16_t *in; |
| int i; |
| const int stride = 32; |
| int16x4_t d16s16, d17s16, d18s16, d19s16, d20s16, d21s16, d22s16, d23s16; |
| int16x4_t d24s16, d25s16, d26s16, d27s16, d28s16, d29s16, d30s16, d31s16; |
| int16x8_t q8s16, q9s16, q10s16, q11s16, q12s16, q13s16, q14s16, q15s16; |
| int32x4x2_t q0x2s32, q1x2s32, q2x2s32, q3x2s32; |
| int16x8x2_t q0x2s16, q1x2s16, q2x2s16, q3x2s16; |
| |
| for (i = 0; i < 4; i++, input += 8) { |
| in = input; |
| q8s16 = vld1q_s16(in); |
| in += stride; |
| q9s16 = vld1q_s16(in); |
| in += stride; |
| q10s16 = vld1q_s16(in); |
| in += stride; |
| q11s16 = vld1q_s16(in); |
| in += stride; |
| q12s16 = vld1q_s16(in); |
| in += stride; |
| q13s16 = vld1q_s16(in); |
| in += stride; |
| q14s16 = vld1q_s16(in); |
| in += stride; |
| q15s16 = vld1q_s16(in); |
| |
| d16s16 = vget_low_s16(q8s16); |
| d17s16 = vget_high_s16(q8s16); |
| d18s16 = vget_low_s16(q9s16); |
| d19s16 = vget_high_s16(q9s16); |
| d20s16 = vget_low_s16(q10s16); |
| d21s16 = vget_high_s16(q10s16); |
| d22s16 = vget_low_s16(q11s16); |
| d23s16 = vget_high_s16(q11s16); |
| d24s16 = vget_low_s16(q12s16); |
| d25s16 = vget_high_s16(q12s16); |
| d26s16 = vget_low_s16(q13s16); |
| d27s16 = vget_high_s16(q13s16); |
| d28s16 = vget_low_s16(q14s16); |
| d29s16 = vget_high_s16(q14s16); |
| d30s16 = vget_low_s16(q15s16); |
| d31s16 = vget_high_s16(q15s16); |
| |
| q8s16 = vcombine_s16(d16s16, d24s16); // vswp d17, d24 |
| q9s16 = vcombine_s16(d18s16, d26s16); // vswp d19, d26 |
| q10s16 = vcombine_s16(d20s16, d28s16); // vswp d21, d28 |
| q11s16 = vcombine_s16(d22s16, d30s16); // vswp d23, d30 |
| q12s16 = vcombine_s16(d17s16, d25s16); |
| q13s16 = vcombine_s16(d19s16, d27s16); |
| q14s16 = vcombine_s16(d21s16, d29s16); |
| q15s16 = vcombine_s16(d23s16, d31s16); |
| |
| q0x2s32 = |
| vtrnq_s32(vreinterpretq_s32_s16(q8s16), vreinterpretq_s32_s16(q10s16)); |
| q1x2s32 = |
| vtrnq_s32(vreinterpretq_s32_s16(q9s16), vreinterpretq_s32_s16(q11s16)); |
| q2x2s32 = |
| vtrnq_s32(vreinterpretq_s32_s16(q12s16), vreinterpretq_s32_s16(q14s16)); |
| q3x2s32 = |
| vtrnq_s32(vreinterpretq_s32_s16(q13s16), vreinterpretq_s32_s16(q15s16)); |
| |
| q0x2s16 = vtrnq_s16(vreinterpretq_s16_s32(q0x2s32.val[0]), // q8 |
| vreinterpretq_s16_s32(q1x2s32.val[0])); // q9 |
| q1x2s16 = vtrnq_s16(vreinterpretq_s16_s32(q0x2s32.val[1]), // q10 |
| vreinterpretq_s16_s32(q1x2s32.val[1])); // q11 |
| q2x2s16 = vtrnq_s16(vreinterpretq_s16_s32(q2x2s32.val[0]), // q12 |
| vreinterpretq_s16_s32(q3x2s32.val[0])); // q13 |
| q3x2s16 = vtrnq_s16(vreinterpretq_s16_s32(q2x2s32.val[1]), // q14 |
| vreinterpretq_s16_s32(q3x2s32.val[1])); // q15 |
| |
| vst1q_s16(t_buf, q0x2s16.val[0]); |
| t_buf += 8; |
| vst1q_s16(t_buf, q0x2s16.val[1]); |
| t_buf += 8; |
| vst1q_s16(t_buf, q1x2s16.val[0]); |
| t_buf += 8; |
| vst1q_s16(t_buf, q1x2s16.val[1]); |
| t_buf += 8; |
| vst1q_s16(t_buf, q2x2s16.val[0]); |
| t_buf += 8; |
| vst1q_s16(t_buf, q2x2s16.val[1]); |
| t_buf += 8; |
| vst1q_s16(t_buf, q3x2s16.val[0]); |
| t_buf += 8; |
| vst1q_s16(t_buf, q3x2s16.val[1]); |
| t_buf += 8; |
| } |
| return; |
| } |
| |
| static INLINE void idct32_bands_end_1st_pass(int16_t *out, int16x8_t q2s16, |
| int16x8_t q3s16, int16x8_t q6s16, |
| int16x8_t q7s16, int16x8_t q8s16, |
| int16x8_t q9s16, int16x8_t q10s16, |
| int16x8_t q11s16, int16x8_t q12s16, |
| int16x8_t q13s16, int16x8_t q14s16, |
| int16x8_t q15s16) { |
| int16x8_t q0s16, q1s16, q4s16, q5s16; |
| |
| STORE_IN_OUTPUT(17, 16, 17, q6s16, q7s16); |
| STORE_IN_OUTPUT(17, 14, 15, q8s16, q9s16); |
| |
| LOAD_FROM_OUTPUT(15, 30, 31, q0s16, q1s16); |
| q4s16 = vaddq_s16(q2s16, q1s16); |
| q5s16 = vaddq_s16(q3s16, q0s16); |
| q6s16 = vsubq_s16(q3s16, q0s16); |
| q7s16 = vsubq_s16(q2s16, q1s16); |
| STORE_IN_OUTPUT(31, 30, 31, q6s16, q7s16); |
| STORE_IN_OUTPUT(31, 0, 1, q4s16, q5s16); |
| |
| LOAD_FROM_OUTPUT(1, 12, 13, q0s16, q1s16); |
| q2s16 = vaddq_s16(q10s16, q1s16); |
| q3s16 = vaddq_s16(q11s16, q0s16); |
| q4s16 = vsubq_s16(q11s16, q0s16); |
| q5s16 = vsubq_s16(q10s16, q1s16); |
| |
| LOAD_FROM_OUTPUT(13, 18, 19, q0s16, q1s16); |
| q8s16 = vaddq_s16(q4s16, q1s16); |
| q9s16 = vaddq_s16(q5s16, q0s16); |
| q6s16 = vsubq_s16(q5s16, q0s16); |
| q7s16 = vsubq_s16(q4s16, q1s16); |
| STORE_IN_OUTPUT(19, 18, 19, q6s16, q7s16); |
| STORE_IN_OUTPUT(19, 12, 13, q8s16, q9s16); |
| |
| LOAD_FROM_OUTPUT(13, 28, 29, q0s16, q1s16); |
| q4s16 = vaddq_s16(q2s16, q1s16); |
| q5s16 = vaddq_s16(q3s16, q0s16); |
| q6s16 = vsubq_s16(q3s16, q0s16); |
| q7s16 = vsubq_s16(q2s16, q1s16); |
| STORE_IN_OUTPUT(29, 28, 29, q6s16, q7s16); |
| STORE_IN_OUTPUT(29, 2, 3, q4s16, q5s16); |
| |
| LOAD_FROM_OUTPUT(3, 10, 11, q0s16, q1s16); |
| q2s16 = vaddq_s16(q12s16, q1s16); |
| q3s16 = vaddq_s16(q13s16, q0s16); |
| q4s16 = vsubq_s16(q13s16, q0s16); |
| q5s16 = vsubq_s16(q12s16, q1s16); |
| |
| LOAD_FROM_OUTPUT(11, 20, 21, q0s16, q1s16); |
| q8s16 = vaddq_s16(q4s16, q1s16); |
| q9s16 = vaddq_s16(q5s16, q0s16); |
| q6s16 = vsubq_s16(q5s16, q0s16); |
| q7s16 = vsubq_s16(q4s16, q1s16); |
| STORE_IN_OUTPUT(21, 20, 21, q6s16, q7s16); |
| STORE_IN_OUTPUT(21, 10, 11, q8s16, q9s16); |
| |
| LOAD_FROM_OUTPUT(11, 26, 27, q0s16, q1s16); |
| q4s16 = vaddq_s16(q2s16, q1s16); |
| q5s16 = vaddq_s16(q3s16, q0s16); |
| q6s16 = vsubq_s16(q3s16, q0s16); |
| q7s16 = vsubq_s16(q2s16, q1s16); |
| STORE_IN_OUTPUT(27, 26, 27, q6s16, q7s16); |
| STORE_IN_OUTPUT(27, 4, 5, q4s16, q5s16); |
| |
| LOAD_FROM_OUTPUT(5, 8, 9, q0s16, q1s16); |
| q2s16 = vaddq_s16(q14s16, q1s16); |
| q3s16 = vaddq_s16(q15s16, q0s16); |
| q4s16 = vsubq_s16(q15s16, q0s16); |
| q5s16 = vsubq_s16(q14s16, q1s16); |
| |
| LOAD_FROM_OUTPUT(9, 22, 23, q0s16, q1s16); |
| q8s16 = vaddq_s16(q4s16, q1s16); |
| q9s16 = vaddq_s16(q5s16, q0s16); |
| q6s16 = vsubq_s16(q5s16, q0s16); |
| q7s16 = vsubq_s16(q4s16, q1s16); |
| STORE_IN_OUTPUT(23, 22, 23, q6s16, q7s16); |
| STORE_IN_OUTPUT(23, 8, 9, q8s16, q9s16); |
| |
| LOAD_FROM_OUTPUT(9, 24, 25, q0s16, q1s16); |
| q4s16 = vaddq_s16(q2s16, q1s16); |
| q5s16 = vaddq_s16(q3s16, q0s16); |
| q6s16 = vsubq_s16(q3s16, q0s16); |
| q7s16 = vsubq_s16(q2s16, q1s16); |
| STORE_IN_OUTPUT(25, 24, 25, q6s16, q7s16); |
| STORE_IN_OUTPUT(25, 6, 7, q4s16, q5s16); |
| return; |
| } |
| |
| static INLINE void idct32_bands_end_2nd_pass( |
| int16_t *out, uint8_t *dest, int stride, int16x8_t q2s16, int16x8_t q3s16, |
| int16x8_t q6s16, int16x8_t q7s16, int16x8_t q8s16, int16x8_t q9s16, |
| int16x8_t q10s16, int16x8_t q11s16, int16x8_t q12s16, int16x8_t q13s16, |
| int16x8_t q14s16, int16x8_t q15s16) { |
| uint8_t *r6 = dest + 31 * stride; |
| uint8_t *r7 = dest /* + 0 * stride*/; |
| uint8_t *r9 = dest + 15 * stride; |
| uint8_t *r10 = dest + 16 * stride; |
| int str2 = stride << 1; |
| int16x8_t q0s16, q1s16, q4s16, q5s16; |
| |
| STORE_COMBINE_CENTER_RESULTS(r10, r9); |
| r10 += str2; |
| r9 -= str2; |
| |
| LOAD_FROM_OUTPUT(17, 30, 31, q0s16, q1s16) |
| q4s16 = vaddq_s16(q2s16, q1s16); |
| q5s16 = vaddq_s16(q3s16, q0s16); |
| q6s16 = vsubq_s16(q3s16, q0s16); |
| q7s16 = vsubq_s16(q2s16, q1s16); |
| STORE_COMBINE_EXTREME_RESULTS(r7, r6); |
| r7 += str2; |
| r6 -= str2; |
| |
| LOAD_FROM_OUTPUT(31, 12, 13, q0s16, q1s16) |
| q2s16 = vaddq_s16(q10s16, q1s16); |
| q3s16 = vaddq_s16(q11s16, q0s16); |
| q4s16 = vsubq_s16(q11s16, q0s16); |
| q5s16 = vsubq_s16(q10s16, q1s16); |
| |
| LOAD_FROM_OUTPUT(13, 18, 19, q0s16, q1s16) |
| q8s16 = vaddq_s16(q4s16, q1s16); |
| q9s16 = vaddq_s16(q5s16, q0s16); |
| q6s16 = vsubq_s16(q5s16, q0s16); |
| q7s16 = vsubq_s16(q4s16, q1s16); |
| STORE_COMBINE_CENTER_RESULTS(r10, r9); |
| r10 += str2; |
| r9 -= str2; |
| |
| LOAD_FROM_OUTPUT(19, 28, 29, q0s16, q1s16) |
| q4s16 = vaddq_s16(q2s16, q1s16); |
| q5s16 = vaddq_s16(q3s16, q0s16); |
| q6s16 = vsubq_s16(q3s16, q0s16); |
| q7s16 = vsubq_s16(q2s16, q1s16); |
| STORE_COMBINE_EXTREME_RESULTS(r7, r6); |
| r7 += str2; |
| r6 -= str2; |
| |
| LOAD_FROM_OUTPUT(29, 10, 11, q0s16, q1s16) |
| q2s16 = vaddq_s16(q12s16, q1s16); |
| q3s16 = vaddq_s16(q13s16, q0s16); |
| q4s16 = vsubq_s16(q13s16, q0s16); |
| q5s16 = vsubq_s16(q12s16, q1s16); |
| |
| LOAD_FROM_OUTPUT(11, 20, 21, q0s16, q1s16) |
| q8s16 = vaddq_s16(q4s16, q1s16); |
| q9s16 = vaddq_s16(q5s16, q0s16); |
| q6s16 = vsubq_s16(q5s16, q0s16); |
| q7s16 = vsubq_s16(q4s16, q1s16); |
| STORE_COMBINE_CENTER_RESULTS(r10, r9); |
| r10 += str2; |
| r9 -= str2; |
| |
| LOAD_FROM_OUTPUT(21, 26, 27, q0s16, q1s16) |
| q4s16 = vaddq_s16(q2s16, q1s16); |
| q5s16 = vaddq_s16(q3s16, q0s16); |
| q6s16 = vsubq_s16(q3s16, q0s16); |
| q7s16 = vsubq_s16(q2s16, q1s16); |
| STORE_COMBINE_EXTREME_RESULTS(r7, r6); |
| r7 += str2; |
| r6 -= str2; |
| |
| LOAD_FROM_OUTPUT(27, 8, 9, q0s16, q1s16) |
| q2s16 = vaddq_s16(q14s16, q1s16); |
| q3s16 = vaddq_s16(q15s16, q0s16); |
| q4s16 = vsubq_s16(q15s16, q0s16); |
| q5s16 = vsubq_s16(q14s16, q1s16); |
| |
| LOAD_FROM_OUTPUT(9, 22, 23, q0s16, q1s16) |
| q8s16 = vaddq_s16(q4s16, q1s16); |
| q9s16 = vaddq_s16(q5s16, q0s16); |
| q6s16 = vsubq_s16(q5s16, q0s16); |
| q7s16 = vsubq_s16(q4s16, q1s16); |
| STORE_COMBINE_CENTER_RESULTS(r10, r9); |
| |
| LOAD_FROM_OUTPUT(23, 24, 25, q0s16, q1s16) |
| q4s16 = vaddq_s16(q2s16, q1s16); |
| q5s16 = vaddq_s16(q3s16, q0s16); |
| q6s16 = vsubq_s16(q3s16, q0s16); |
| q7s16 = vsubq_s16(q2s16, q1s16); |
| STORE_COMBINE_EXTREME_RESULTS(r7, r6); |
| return; |
| } |
| |
| void aom_idct32x32_1024_add_neon(int16_t *input, uint8_t *dest, int stride) { |
| int i, idct32_pass_loop; |
| int16_t trans_buf[32 * 8]; |
| int16_t pass1[32 * 32]; |
| int16_t pass2[32 * 32]; |
| int16_t *out; |
| int16x8_t q0s16, q1s16, q2s16, q3s16, q4s16, q5s16, q6s16, q7s16; |
| int16x8_t q8s16, q9s16, q10s16, q11s16, q12s16, q13s16, q14s16, q15s16; |
| |
| for (idct32_pass_loop = 0, out = pass1; idct32_pass_loop < 2; |
| idct32_pass_loop++, |
| input = pass1, // the input of pass2 is the result of pass1 |
| out = pass2) { |
| for (i = 0; i < 4; i++, input += 32 * 8, out += 8) { // idct32_bands_loop |
| idct32_transpose_pair(input, trans_buf); |
| |
| // ----------------------------------------- |
| // BLOCK A: 16-19,28-31 |
| // ----------------------------------------- |
| // generate 16,17,30,31 |
| // part of stage 1 |
| LOAD_FROM_TRANSPOSED(0, 1, 31) |
| DO_BUTTERFLY_STD(cospi_31_64, cospi_1_64, &q0s16, &q2s16) |
| LOAD_FROM_TRANSPOSED(31, 17, 15) |
| DO_BUTTERFLY_STD(cospi_15_64, cospi_17_64, &q1s16, &q3s16) |
| // part of stage 2 |
| q4s16 = vaddq_s16(q0s16, q1s16); |
| q13s16 = vsubq_s16(q0s16, q1s16); |
| q6s16 = vaddq_s16(q2s16, q3s16); |
| q14s16 = vsubq_s16(q2s16, q3s16); |
| // part of stage 3 |
| DO_BUTTERFLY_STD(cospi_28_64, cospi_4_64, &q5s16, &q7s16) |
| |
| // generate 18,19,28,29 |
| // part of stage 1 |
| LOAD_FROM_TRANSPOSED(15, 9, 23) |
| DO_BUTTERFLY_STD(cospi_23_64, cospi_9_64, &q0s16, &q2s16) |
| LOAD_FROM_TRANSPOSED(23, 25, 7) |
| DO_BUTTERFLY_STD(cospi_7_64, cospi_25_64, &q1s16, &q3s16) |
| // part of stage 2 |
| q13s16 = vsubq_s16(q3s16, q2s16); |
| q3s16 = vaddq_s16(q3s16, q2s16); |
| q14s16 = vsubq_s16(q1s16, q0s16); |
| q2s16 = vaddq_s16(q1s16, q0s16); |
| // part of stage 3 |
| DO_BUTTERFLY_STD(-cospi_4_64, -cospi_28_64, &q1s16, &q0s16) |
| // part of stage 4 |
| q8s16 = vaddq_s16(q4s16, q2s16); |
| q9s16 = vaddq_s16(q5s16, q0s16); |
| q10s16 = vaddq_s16(q7s16, q1s16); |
| q15s16 = vaddq_s16(q6s16, q3s16); |
| q13s16 = vsubq_s16(q5s16, q0s16); |
| q14s16 = vsubq_s16(q7s16, q1s16); |
| STORE_IN_OUTPUT(0, 16, 31, q8s16, q15s16) |
| STORE_IN_OUTPUT(31, 17, 30, q9s16, q10s16) |
| // part of stage 5 |
| DO_BUTTERFLY_STD(cospi_24_64, cospi_8_64, &q0s16, &q1s16) |
| STORE_IN_OUTPUT(30, 29, 18, q1s16, q0s16) |
| // part of stage 4 |
| q13s16 = vsubq_s16(q4s16, q2s16); |
| q14s16 = vsubq_s16(q6s16, q3s16); |
| // part of stage 5 |
| DO_BUTTERFLY_STD(cospi_24_64, cospi_8_64, &q4s16, &q6s16) |
| STORE_IN_OUTPUT(18, 19, 28, q4s16, q6s16) |
| |
| // ----------------------------------------- |
| // BLOCK B: 20-23,24-27 |
| // ----------------------------------------- |
| // generate 20,21,26,27 |
| // part of stage 1 |
| LOAD_FROM_TRANSPOSED(7, 5, 27) |
| DO_BUTTERFLY_STD(cospi_27_64, cospi_5_64, &q0s16, &q2s16) |
| LOAD_FROM_TRANSPOSED(27, 21, 11) |
| DO_BUTTERFLY_STD(cospi_11_64, cospi_21_64, &q1s16, &q3s16) |
| // part of stage 2 |
| q13s16 = vsubq_s16(q0s16, q1s16); |
| q0s16 = vaddq_s16(q0s16, q1s16); |
| q14s16 = vsubq_s16(q2s16, q3s16); |
| q2s16 = vaddq_s16(q2s16, q3s16); |
| // part of stage 3 |
| DO_BUTTERFLY_STD(cospi_12_64, cospi_20_64, &q1s16, &q3s16) |
| |
| // generate 22,23,24,25 |
| // part of stage 1 |
| LOAD_FROM_TRANSPOSED(11, 13, 19) |
| DO_BUTTERFLY_STD(cospi_19_64, cospi_13_64, &q5s16, &q7s16) |
| LOAD_FROM_TRANSPOSED(19, 29, 3) |
| DO_BUTTERFLY_STD(cospi_3_64, cospi_29_64, &q4s16, &q6s16) |
| // part of stage 2 |
| q14s16 = vsubq_s16(q4s16, q5s16); |
| q5s16 = vaddq_s16(q4s16, q5s16); |
| q13s16 = vsubq_s16(q6s16, q7s16); |
| q6s16 = vaddq_s16(q6s16, q7s16); |
| // part of stage 3 |
| DO_BUTTERFLY_STD(-cospi_20_64, -cospi_12_64, &q4s16, &q7s16) |
| // part of stage 4 |
| q10s16 = vaddq_s16(q7s16, q1s16); |
| q11s16 = vaddq_s16(q5s16, q0s16); |
| q12s16 = vaddq_s16(q6s16, q2s16); |
| q15s16 = vaddq_s16(q4s16, q3s16); |
| // part of stage 6 |
| LOAD_FROM_OUTPUT(28, 16, 17, q14s16, q13s16) |
| q8s16 = vaddq_s16(q14s16, q11s16); |
| q9s16 = vaddq_s16(q13s16, q10s16); |
| q13s16 = vsubq_s16(q13s16, q10s16); |
| q11s16 = vsubq_s16(q14s16, q11s16); |
| STORE_IN_OUTPUT(17, 17, 16, q9s16, q8s16) |
| LOAD_FROM_OUTPUT(16, 30, 31, q14s16, q9s16) |
| q8s16 = vsubq_s16(q9s16, q12s16); |
| q10s16 = vaddq_s16(q14s16, q15s16); |
| q14s16 = vsubq_s16(q14s16, q15s16); |
| q12s16 = vaddq_s16(q9s16, q12s16); |
| STORE_IN_OUTPUT(31, 30, 31, q10s16, q12s16) |
| // part of stage 7 |
| DO_BUTTERFLY_STD(cospi_16_64, cospi_16_64, &q13s16, &q14s16) |
| STORE_IN_OUTPUT(31, 25, 22, q14s16, q13s16) |
| q13s16 = q11s16; |
| q14s16 = q8s16; |
| DO_BUTTERFLY_STD(cospi_16_64, cospi_16_64, &q13s16, &q14s16) |
| STORE_IN_OUTPUT(22, 24, 23, q14s16, q13s16) |
| // part of stage 4 |
| q14s16 = vsubq_s16(q5s16, q0s16); |
| q13s16 = vsubq_s16(q6s16, q2s16); |
| DO_BUTTERFLY_STD(-cospi_8_64, -cospi_24_64, &q5s16, &q6s16); |
| q14s16 = vsubq_s16(q7s16, q1s16); |
| q13s16 = vsubq_s16(q4s16, q3s16); |
| DO_BUTTERFLY_STD(-cospi_8_64, -cospi_24_64, &q0s16, &q1s16); |
| // part of stage 6 |
| LOAD_FROM_OUTPUT(23, 18, 19, q14s16, q13s16) |
| q8s16 = vaddq_s16(q14s16, q1s16); |
| q9s16 = vaddq_s16(q13s16, q6s16); |
| q13s16 = vsubq_s16(q13s16, q6s16); |
| q1s16 = vsubq_s16(q14s16, q1s16); |
| STORE_IN_OUTPUT(19, 18, 19, q8s16, q9s16) |
| LOAD_FROM_OUTPUT(19, 28, 29, q8s16, q9s16) |
| q14s16 = vsubq_s16(q8s16, q5s16); |
| q10s16 = vaddq_s16(q8s16, q5s16); |
| q11s16 = vaddq_s16(q9s16, q0s16); |
| q0s16 = vsubq_s16(q9s16, q0s16); |
| STORE_IN_OUTPUT(29, 28, 29, q10s16, q11s16) |
| // part of stage 7 |
| DO_BUTTERFLY_STD(cospi_16_64, cospi_16_64, &q13s16, &q14s16) |
| STORE_IN_OUTPUT(29, 20, 27, q13s16, q14s16) |
| DO_BUTTERFLY(q0s16, q1s16, cospi_16_64, cospi_16_64, &q1s16, &q0s16); |
| STORE_IN_OUTPUT(27, 21, 26, q1s16, q0s16) |
| |
| // ----------------------------------------- |
| // BLOCK C: 8-10,11-15 |
| // ----------------------------------------- |
| // generate 8,9,14,15 |
| // part of stage 2 |
| LOAD_FROM_TRANSPOSED(3, 2, 30) |
| DO_BUTTERFLY_STD(cospi_30_64, cospi_2_64, &q0s16, &q2s16) |
| LOAD_FROM_TRANSPOSED(30, 18, 14) |
| DO_BUTTERFLY_STD(cospi_14_64, cospi_18_64, &q1s16, &q3s16) |
| // part of stage 3 |
| q13s16 = vsubq_s16(q0s16, q1s16); |
| q0s16 = vaddq_s16(q0s16, q1s16); |
| q14s16 = vsubq_s16(q2s16, q3s16); |
| q2s16 = vaddq_s16(q2s16, q3s16); |
| // part of stage 4 |
| DO_BUTTERFLY_STD(cospi_24_64, cospi_8_64, &q1s16, &q3s16) |
| |
| // generate 10,11,12,13 |
| // part of stage 2 |
| LOAD_FROM_TRANSPOSED(14, 10, 22) |
| DO_BUTTERFLY_STD(cospi_22_64, cospi_10_64, &q5s16, &q7s16) |
| LOAD_FROM_TRANSPOSED(22, 26, 6) |
| DO_BUTTERFLY_STD(cospi_6_64, cospi_26_64, &q4s16, &q6s16) |
| // part of stage 3 |
| q14s16 = vsubq_s16(q4s16, q5s16); |
| q5s16 = vaddq_s16(q4s16, q5s16); |
| q13s16 = vsubq_s16(q6s16, q7s16); |
| q6s16 = vaddq_s16(q6s16, q7s16); |
| // part of stage 4 |
| DO_BUTTERFLY_STD(-cospi_8_64, -cospi_24_64, &q4s16, &q7s16) |
| // part of stage 5 |
| q8s16 = vaddq_s16(q0s16, q5s16); |
| q9s16 = vaddq_s16(q1s16, q7s16); |
| q13s16 = vsubq_s16(q1s16, q7s16); |
| q14s16 = vsubq_s16(q3s16, q4s16); |
| q10s16 = vaddq_s16(q3s16, q4s16); |
| q15s16 = vaddq_s16(q2s16, q6s16); |
| STORE_IN_OUTPUT(26, 8, 15, q8s16, q15s16) |
| STORE_IN_OUTPUT(15, 9, 14, q9s16, q10s16) |
| // part of stage 6 |
| DO_BUTTERFLY_STD(cospi_16_64, cospi_16_64, &q1s16, &q3s16) |
| STORE_IN_OUTPUT(14, 13, 10, q3s16, q1s16) |
| q13s16 = vsubq_s16(q0s16, q5s16); |
| q14s16 = vsubq_s16(q2s16, q6s16); |
| DO_BUTTERFLY_STD(cospi_16_64, cospi_16_64, &q1s16, &q3s16) |
| STORE_IN_OUTPUT(10, 11, 12, q1s16, q3s16) |
| |
| // ----------------------------------------- |
| // BLOCK D: 0-3,4-7 |
| // ----------------------------------------- |
| // generate 4,5,6,7 |
| // part of stage 3 |
| LOAD_FROM_TRANSPOSED(6, 4, 28) |
| DO_BUTTERFLY_STD(cospi_28_64, cospi_4_64, &q0s16, &q2s16) |
| LOAD_FROM_TRANSPOSED(28, 20, 12) |
| DO_BUTTERFLY_STD(cospi_12_64, cospi_20_64, &q1s16, &q3s16) |
| // part of stage 4 |
| q13s16 = vsubq_s16(q0s16, q1s16); |
| q0s16 = vaddq_s16(q0s16, q1s16); |
| q14s16 = vsubq_s16(q2s16, q3s16); |
| q2s16 = vaddq_s16(q2s16, q3s16); |
| // part of stage 5 |
| DO_BUTTERFLY_STD(cospi_16_64, cospi_16_64, &q1s16, &q3s16) |
| |
| // generate 0,1,2,3 |
| // part of stage 4 |
| LOAD_FROM_TRANSPOSED(12, 0, 16) |
| DO_BUTTERFLY_STD(cospi_16_64, cospi_16_64, &q5s16, &q7s16) |
| LOAD_FROM_TRANSPOSED(16, 8, 24) |
| DO_BUTTERFLY_STD(cospi_24_64, cospi_8_64, &q14s16, &q6s16) |
| // part of stage 5 |
| q4s16 = vaddq_s16(q7s16, q6s16); |
| q7s16 = vsubq_s16(q7s16, q6s16); |
| q6s16 = vsubq_s16(q5s16, q14s16); |
| q5s16 = vaddq_s16(q5s16, q14s16); |
| // part of stage 6 |
| q8s16 = vaddq_s16(q4s16, q2s16); |
| q9s16 = vaddq_s16(q5s16, q3s16); |
| q10s16 = vaddq_s16(q6s16, q1s16); |
| q11s16 = vaddq_s16(q7s16, q0s16); |
| q12s16 = vsubq_s16(q7s16, q0s16); |
| q13s16 = vsubq_s16(q6s16, q1s16); |
| q14s16 = vsubq_s16(q5s16, q3s16); |
| q15s16 = vsubq_s16(q4s16, q2s16); |
| // part of stage 7 |
| LOAD_FROM_OUTPUT(12, 14, 15, q0s16, q1s16) |
| q2s16 = vaddq_s16(q8s16, q1s16); |
| q3s16 = vaddq_s16(q9s16, q0s16); |
| q4s16 = vsubq_s16(q9s16, q0s16); |
| q5s16 = vsubq_s16(q8s16, q1s16); |
| LOAD_FROM_OUTPUT(15, 16, 17, q0s16, q1s16) |
| q8s16 = vaddq_s16(q4s16, q1s16); |
| q9s16 = vaddq_s16(q5s16, q0s16); |
| q6s16 = vsubq_s16(q5s16, q0s16); |
| q7s16 = vsubq_s16(q4s16, q1s16); |
| |
| if (idct32_pass_loop == 0) { |
| idct32_bands_end_1st_pass(out, q2s16, q3s16, q6s16, q7s16, q8s16, q9s16, |
| q10s16, q11s16, q12s16, q13s16, q14s16, |
| q15s16); |
| } else { |
| idct32_bands_end_2nd_pass(out, dest, stride, q2s16, q3s16, q6s16, q7s16, |
| q8s16, q9s16, q10s16, q11s16, q12s16, q13s16, |
| q14s16, q15s16); |
| dest += 8; |
| } |
| } |
| } |
| return; |
| } |
