--- /dev/null
+/*
+ * Copyright (c) 2016 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 "./vpx_config.h"
+#include "./vpx_dsp_rtcd.h"
+#include "vpx_dsp/arm/idct_neon.h"
+#include "vpx_dsp/arm/transpose_neon.h"
+#include "vpx_dsp/txfm_common.h"
+
+// Only for the first pass of the _135_ variant. Since it only uses values from
+// the top left 16x16 it can safely assume all the remaining values are 0 and
+// skip an awful lot of calculations. In fact, only the first 12 columns make
+// the cut. None of the elements in the 13th, 14th, 15th or 16th columns are
+// used so it skips any calls to input[12|13|14|15] too.
+// In C this does a single row of 32 for each call. Here it transposes the top
+// left 12x8 to allow using SIMD.
+
+// vp9/common/vp9_scan.c:vp9_default_iscan_32x32 arranges the first 135 non-zero
+// coefficients as follows:
+// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
+// 0 0 2 5 10 17 25 38 47 62 83 101 121
+// 1 1 4 8 15 22 30 45 58 74 92 112 133
+// 2 3 7 12 18 28 36 52 64 82 102 118
+// 3 6 11 16 23 31 43 60 73 90 109 126
+// 4 9 14 19 29 37 50 65 78 98 116 134
+// 5 13 20 26 35 44 54 72 85 105 123
+// 6 21 27 33 42 53 63 80 94 113 132
+// 7 24 32 39 48 57 71 88 104 120
+// 8 34 40 46 56 68 81 96 111 130
+// 9 41 49 55 67 77 91 107 124
+// 10 51 59 66 76 89 99 119 131
+// 11 61 69 75 87 100 114 129
+// 12 70 79 86 97 108 122
+// 13 84 93 103 110 125
+// 14 98 106 115 127
+// 15 117 128
+static void idct32_12_neon(const int16_t *input, int16_t *output) {
+ int16x8_t in0, in1, in2, in3, in4, in5, in6, in7;
+ int16x4_t tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7;
+ int16x8_t in8, in9, in10, in11;
+ int16x8_t s1_16, s1_18, s1_19, s1_20, s1_21, s1_23, s1_24, s1_26, s1_27,
+ s1_28, s1_29, s1_31;
+ int16x8_t s2_8, s2_10, s2_11, s2_12, s2_13, s2_15, s2_18, s2_19, s2_20, s2_21,
+ s2_26, s2_27, s2_28, s2_29;
+ int16x8_t s3_4, s3_7, s3_10, s3_11, s3_12, s3_13, s3_17, s3_18, s3_21, s3_22,
+ s3_25, s3_26, s3_29, s3_30;
+ int16x8_t s4_0, s4_2, s4_3, s4_9, s4_10, s4_13, s4_14, s4_16, s4_17, s4_18,
+ s4_19, s4_20, s4_21, s4_22, s4_23, s4_24, s4_25, s4_26, s4_27, s4_28,
+ s4_29, s4_30, s4_31;
+ int16x8_t s5_0, s5_1, s5_2, s5_3, s5_5, s5_6, s5_8, s5_9, s5_10, s5_11, s5_12,
+ s5_13, s5_14, s5_15, s5_18, s5_19, s5_20, s5_21, s5_26, s5_27, s5_28,
+ s5_29;
+ int16x8_t s6_0, s6_1, s6_2, s6_3, s6_4, s6_5, s6_6, s6_7, s6_10, s6_11, s6_12,
+ s6_13, s6_16, s6_17, s6_18, s6_19, s6_20, s6_21, s6_22, s6_23, s6_24,
+ s6_25, s6_26, s6_27, s6_28, s6_29, s6_30, s6_31;
+ int16x8_t s7_0, s7_1, s7_2, s7_3, s7_4, s7_5, s7_6, s7_7, s7_8, s7_9, s7_10,
+ s7_11, s7_12, s7_13, s7_14, s7_15, s7_20, s7_21, s7_22, s7_23, s7_24,
+ s7_25, s7_26, s7_27;
+
+ load_and_transpose_s16_8x8(input, 32, &in0, &in1, &in2, &in3, &in4, &in5,
+ &in6, &in7);
+
+ input += 8;
+
+ tmp0 = vld1_s16(input);
+ input += 32;
+ tmp1 = vld1_s16(input);
+ input += 32;
+ tmp2 = vld1_s16(input);
+ input += 32;
+ tmp3 = vld1_s16(input);
+ input += 32;
+ tmp4 = vld1_s16(input);
+ input += 32;
+ tmp5 = vld1_s16(input);
+ input += 32;
+ tmp6 = vld1_s16(input);
+ input += 32;
+ tmp7 = vld1_s16(input);
+
+ transpose_s16_4x8(tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7, &in8, &in9,
+ &in10, &in11);
+
+ // stage 1
+ s1_16 = multiply_shift_and_narrow_s16(in1, cospi_31_64);
+ s1_31 = multiply_shift_and_narrow_s16(in1, cospi_1_64);
+
+ s1_18 = multiply_shift_and_narrow_s16(in9, cospi_23_64);
+ s1_29 = multiply_shift_and_narrow_s16(in9, cospi_9_64);
+
+ s1_19 = multiply_shift_and_narrow_s16(in7, -cospi_25_64);
+ s1_28 = multiply_shift_and_narrow_s16(in7, cospi_7_64);
+
+ s1_20 = multiply_shift_and_narrow_s16(in5, cospi_27_64);
+ s1_27 = multiply_shift_and_narrow_s16(in5, cospi_5_64);
+
+ s1_21 = multiply_shift_and_narrow_s16(in11, -cospi_21_64);
+ s1_26 = multiply_shift_and_narrow_s16(in11, cospi_11_64);
+
+ s1_23 = multiply_shift_and_narrow_s16(in3, -cospi_29_64);
+ s1_24 = multiply_shift_and_narrow_s16(in3, cospi_3_64);
+
+ // stage 2
+ s2_8 = multiply_shift_and_narrow_s16(in2, cospi_30_64);
+ s2_15 = multiply_shift_and_narrow_s16(in2, cospi_2_64);
+
+ s2_10 = multiply_shift_and_narrow_s16(in10, cospi_22_64);
+ s2_13 = multiply_shift_and_narrow_s16(in10, cospi_10_64);
+
+ s2_11 = multiply_shift_and_narrow_s16(in6, -cospi_26_64);
+ s2_12 = multiply_shift_and_narrow_s16(in6, cospi_6_64);
+
+ s2_18 = vsubq_s16(s1_19, s1_18);
+ s2_19 = vaddq_s16(s1_18, s1_19);
+ s2_20 = vaddq_s16(s1_20, s1_21);
+ s2_21 = vsubq_s16(s1_20, s1_21);
+ s2_26 = vsubq_s16(s1_27, s1_26);
+ s2_27 = vaddq_s16(s1_26, s1_27);
+ s2_28 = vaddq_s16(s1_28, s1_29);
+ s2_29 = vsubq_s16(s1_28, s1_29);
+
+ // stage 3
+ s3_4 = multiply_shift_and_narrow_s16(in4, cospi_28_64);
+ s3_7 = multiply_shift_and_narrow_s16(in4, cospi_4_64);
+
+ s3_10 = vsubq_s16(s2_11, s2_10);
+ s3_11 = vaddq_s16(s2_10, s2_11);
+ s3_12 = vaddq_s16(s2_12, s2_13);
+ s3_13 = vsubq_s16(s2_12, s2_13);
+
+ s3_17 = multiply_accumulate_shift_and_narrow_s16(s1_16, -cospi_4_64, s1_31,
+ cospi_28_64);
+ s3_30 = multiply_accumulate_shift_and_narrow_s16(s1_16, cospi_28_64, s1_31,
+ cospi_4_64);
+
+ s3_18 = multiply_accumulate_shift_and_narrow_s16(s2_18, -cospi_28_64, s2_29,
+ -cospi_4_64);
+ s3_29 = multiply_accumulate_shift_and_narrow_s16(s2_18, -cospi_4_64, s2_29,
+ cospi_28_64);
+
+ s3_21 = multiply_accumulate_shift_and_narrow_s16(s2_21, -cospi_20_64, s2_26,
+ cospi_12_64);
+ s3_26 = multiply_accumulate_shift_and_narrow_s16(s2_21, cospi_12_64, s2_26,
+ cospi_20_64);
+
+ s3_22 = multiply_accumulate_shift_and_narrow_s16(s1_23, -cospi_12_64, s1_24,
+ -cospi_20_64);
+ s3_25 = multiply_accumulate_shift_and_narrow_s16(s1_23, -cospi_20_64, s1_24,
+ cospi_12_64);
+
+ // stage 4
+ s4_0 = multiply_shift_and_narrow_s16(in0, cospi_16_64);
+ s4_2 = multiply_shift_and_narrow_s16(in8, cospi_24_64);
+ s4_3 = multiply_shift_and_narrow_s16(in8, cospi_8_64);
+
+ s4_9 = multiply_accumulate_shift_and_narrow_s16(s2_8, -cospi_8_64, s2_15,
+ cospi_24_64);
+ s4_14 = multiply_accumulate_shift_and_narrow_s16(s2_8, cospi_24_64, s2_15,
+ cospi_8_64);
+
+ s4_10 = multiply_accumulate_shift_and_narrow_s16(s3_10, -cospi_24_64, s3_13,
+ -cospi_8_64);
+ s4_13 = multiply_accumulate_shift_and_narrow_s16(s3_10, -cospi_8_64, s3_13,
+ cospi_24_64);
+
+ s4_16 = vaddq_s16(s1_16, s2_19);
+ s4_17 = vaddq_s16(s3_17, s3_18);
+ s4_18 = vsubq_s16(s3_17, s3_18);
+ s4_19 = vsubq_s16(s1_16, s2_19);
+ s4_20 = vsubq_s16(s1_23, s2_20);
+ s4_21 = vsubq_s16(s3_22, s3_21);
+ s4_22 = vaddq_s16(s3_21, s3_22);
+ s4_23 = vaddq_s16(s2_20, s1_23);
+ s4_24 = vaddq_s16(s1_24, s2_27);
+ s4_25 = vaddq_s16(s3_25, s3_26);
+ s4_26 = vsubq_s16(s3_25, s3_26);
+ s4_27 = vsubq_s16(s1_24, s2_27);
+ s4_28 = vsubq_s16(s1_31, s2_28);
+ s4_29 = vsubq_s16(s3_30, s3_29);
+ s4_30 = vaddq_s16(s3_29, s3_30);
+ s4_31 = vaddq_s16(s2_28, s1_31);
+
+ // stage 5
+ s5_0 = vaddq_s16(s4_0, s4_3);
+ s5_1 = vaddq_s16(s4_0, s4_2);
+ s5_2 = vsubq_s16(s4_0, s4_2);
+ s5_3 = vsubq_s16(s4_0, s4_3);
+
+ s5_5 = sub_multiply_shift_and_narrow_s16(s3_7, s3_4, cospi_16_64);
+ s5_6 = add_multiply_shift_and_narrow_s16(s3_4, s3_7, cospi_16_64);
+
+ s5_8 = vaddq_s16(s2_8, s3_11);
+ s5_9 = vaddq_s16(s4_9, s4_10);
+ s5_10 = vsubq_s16(s4_9, s4_10);
+ s5_11 = vsubq_s16(s2_8, s3_11);
+ s5_12 = vsubq_s16(s2_15, s3_12);
+ s5_13 = vsubq_s16(s4_14, s4_13);
+ s5_14 = vaddq_s16(s4_13, s4_14);
+ s5_15 = vaddq_s16(s2_15, s3_12);
+
+ s5_18 = multiply_accumulate_shift_and_narrow_s16(s4_18, -cospi_8_64, s4_29,
+ cospi_24_64);
+ s5_29 = multiply_accumulate_shift_and_narrow_s16(s4_18, cospi_24_64, s4_29,
+ cospi_8_64);
+
+ s5_19 = multiply_accumulate_shift_and_narrow_s16(s4_19, -cospi_8_64, s4_28,
+ cospi_24_64);
+ s5_28 = multiply_accumulate_shift_and_narrow_s16(s4_19, cospi_24_64, s4_28,
+ cospi_8_64);
+
+ s5_20 = multiply_accumulate_shift_and_narrow_s16(s4_20, -cospi_24_64, s4_27,
+ -cospi_8_64);
+ s5_27 = multiply_accumulate_shift_and_narrow_s16(s4_20, -cospi_8_64, s4_27,
+ cospi_24_64);
+
+ s5_21 = multiply_accumulate_shift_and_narrow_s16(s4_21, -cospi_24_64, s4_26,
+ -cospi_8_64);
+ s5_26 = multiply_accumulate_shift_and_narrow_s16(s4_21, -cospi_8_64, s4_26,
+ cospi_24_64);
+
+ // stage 6
+ s6_0 = vaddq_s16(s5_0, s3_7);
+ s6_1 = vaddq_s16(s5_1, s5_6);
+ s6_2 = vaddq_s16(s5_2, s5_5);
+ s6_3 = vaddq_s16(s5_3, s3_4);
+ s6_4 = vsubq_s16(s5_3, s3_4);
+ s6_5 = vsubq_s16(s5_2, s5_5);
+ s6_6 = vsubq_s16(s5_1, s5_6);
+ s6_7 = vsubq_s16(s5_0, s3_7);
+
+ s6_10 = sub_multiply_shift_and_narrow_s16(s5_13, s5_10, cospi_16_64);
+ s6_13 = add_multiply_shift_and_narrow_s16(s5_10, s5_13, cospi_16_64);
+
+ s6_11 = sub_multiply_shift_and_narrow_s16(s5_12, s5_11, cospi_16_64);
+ s6_12 = add_multiply_shift_and_narrow_s16(s5_11, s5_12, cospi_16_64);
+
+ s6_16 = vaddq_s16(s4_16, s4_23);
+ s6_17 = vaddq_s16(s4_17, s4_22);
+ s6_18 = vaddq_s16(s5_18, s5_21);
+ s6_19 = vaddq_s16(s5_19, s5_20);
+ s6_20 = vsubq_s16(s5_19, s5_20);
+ s6_21 = vsubq_s16(s5_18, s5_21);
+ s6_22 = vsubq_s16(s4_17, s4_22);
+ s6_23 = vsubq_s16(s4_16, s4_23);
+
+ s6_24 = vsubq_s16(s4_31, s4_24);
+ s6_25 = vsubq_s16(s4_30, s4_25);
+ s6_26 = vsubq_s16(s5_29, s5_26);
+ s6_27 = vsubq_s16(s5_28, s5_27);
+ s6_28 = vaddq_s16(s5_27, s5_28);
+ s6_29 = vaddq_s16(s5_26, s5_29);
+ s6_30 = vaddq_s16(s4_25, s4_30);
+ s6_31 = vaddq_s16(s4_24, s4_31);
+
+ // stage 7
+ s7_0 = vaddq_s16(s6_0, s5_15);
+ s7_1 = vaddq_s16(s6_1, s5_14);
+ s7_2 = vaddq_s16(s6_2, s6_13);
+ s7_3 = vaddq_s16(s6_3, s6_12);
+ s7_4 = vaddq_s16(s6_4, s6_11);
+ s7_5 = vaddq_s16(s6_5, s6_10);
+ s7_6 = vaddq_s16(s6_6, s5_9);
+ s7_7 = vaddq_s16(s6_7, s5_8);
+ s7_8 = vsubq_s16(s6_7, s5_8);
+ s7_9 = vsubq_s16(s6_6, s5_9);
+ s7_10 = vsubq_s16(s6_5, s6_10);
+ s7_11 = vsubq_s16(s6_4, s6_11);
+ s7_12 = vsubq_s16(s6_3, s6_12);
+ s7_13 = vsubq_s16(s6_2, s6_13);
+ s7_14 = vsubq_s16(s6_1, s5_14);
+ s7_15 = vsubq_s16(s6_0, s5_15);
+
+ s7_20 = sub_multiply_shift_and_narrow_s16(s6_27, s6_20, cospi_16_64);
+ s7_27 = add_multiply_shift_and_narrow_s16(s6_20, s6_27, cospi_16_64);
+
+ s7_21 = sub_multiply_shift_and_narrow_s16(s6_26, s6_21, cospi_16_64);
+ s7_26 = add_multiply_shift_and_narrow_s16(s6_21, s6_26, cospi_16_64);
+
+ s7_22 = sub_multiply_shift_and_narrow_s16(s6_25, s6_22, cospi_16_64);
+ s7_25 = add_multiply_shift_and_narrow_s16(s6_22, s6_25, cospi_16_64);
+
+ s7_23 = sub_multiply_shift_and_narrow_s16(s6_24, s6_23, cospi_16_64);
+ s7_24 = add_multiply_shift_and_narrow_s16(s6_23, s6_24, cospi_16_64);
+
+ // final stage
+ vst1q_s16(output, vaddq_s16(s7_0, s6_31));
+ output += 16;
+ vst1q_s16(output, vaddq_s16(s7_1, s6_30));
+ output += 16;
+ vst1q_s16(output, vaddq_s16(s7_2, s6_29));
+ output += 16;
+ vst1q_s16(output, vaddq_s16(s7_3, s6_28));
+ output += 16;
+ vst1q_s16(output, vaddq_s16(s7_4, s7_27));
+ output += 16;
+ vst1q_s16(output, vaddq_s16(s7_5, s7_26));
+ output += 16;
+ vst1q_s16(output, vaddq_s16(s7_6, s7_25));
+ output += 16;
+ vst1q_s16(output, vaddq_s16(s7_7, s7_24));
+ output += 16;
+
+ vst1q_s16(output, vaddq_s16(s7_8, s7_23));
+ output += 16;
+ vst1q_s16(output, vaddq_s16(s7_9, s7_22));
+ output += 16;
+ vst1q_s16(output, vaddq_s16(s7_10, s7_21));
+ output += 16;
+ vst1q_s16(output, vaddq_s16(s7_11, s7_20));
+ output += 16;
+ vst1q_s16(output, vaddq_s16(s7_12, s6_19));
+ output += 16;
+ vst1q_s16(output, vaddq_s16(s7_13, s6_18));
+ output += 16;
+ vst1q_s16(output, vaddq_s16(s7_14, s6_17));
+ output += 16;
+ vst1q_s16(output, vaddq_s16(s7_15, s6_16));
+ output += 16;
+
+ vst1q_s16(output, vsubq_s16(s7_15, s6_16));
+ output += 16;
+ vst1q_s16(output, vsubq_s16(s7_14, s6_17));
+ output += 16;
+ vst1q_s16(output, vsubq_s16(s7_13, s6_18));
+ output += 16;
+ vst1q_s16(output, vsubq_s16(s7_12, s6_19));
+ output += 16;
+ vst1q_s16(output, vsubq_s16(s7_11, s7_20));
+ output += 16;
+ vst1q_s16(output, vsubq_s16(s7_10, s7_21));
+ output += 16;
+ vst1q_s16(output, vsubq_s16(s7_9, s7_22));
+ output += 16;
+ vst1q_s16(output, vsubq_s16(s7_8, s7_23));
+ output += 16;
+
+ vst1q_s16(output, vsubq_s16(s7_7, s7_24));
+ output += 16;
+ vst1q_s16(output, vsubq_s16(s7_6, s7_25));
+ output += 16;
+ vst1q_s16(output, vsubq_s16(s7_5, s7_26));
+ output += 16;
+ vst1q_s16(output, vsubq_s16(s7_4, s7_27));
+ output += 16;
+ vst1q_s16(output, vsubq_s16(s7_3, s6_28));
+ output += 16;
+ vst1q_s16(output, vsubq_s16(s7_2, s6_29));
+ output += 16;
+ vst1q_s16(output, vsubq_s16(s7_1, s6_30));
+ output += 16;
+ vst1q_s16(output, vsubq_s16(s7_0, s6_31));
+}
+
+static void idct32_16_neon(const int16_t *input, uint8_t *output, int stride) {
+ int16x8_t in0, in1, in2, in3, in4, in5, in6, in7, in8, in9, in10, in11, in12,
+ in13, in14, in15;
+ int16x8_t s1_16, s1_17, s1_18, s1_19, s1_20, s1_21, s1_22, s1_23, s1_24,
+ s1_25, s1_26, s1_27, s1_28, s1_29, s1_30, s1_31;
+ int16x8_t s2_8, s2_9, s2_10, s2_11, s2_12, s2_13, s2_14, s2_15, s2_16, s2_17,
+ s2_18, s2_19, s2_20, s2_21, s2_22, s2_23, s2_24, s2_25, s2_26, s2_27,
+ s2_28, s2_29, s2_30, s2_31;
+ int16x8_t s3_4, s3_5, s3_6, s3_7, s3_8, s3_9, s3_10, s3_11, s3_12, s3_13,
+ s3_14, s3_15, s3_17, s3_18, s3_21, s3_22, s3_25, s3_26, s3_29, s3_30;
+ int16x8_t s4_0, s4_2, s4_3, s4_4, s4_5, s4_6, s4_7, s4_9, s4_10, s4_13, s4_14,
+ s4_16, s4_17, s4_18, s4_19, s4_20, s4_21, s4_22, s4_23, s4_24, s4_25,
+ s4_26, s4_27, s4_28, s4_29, s4_30, s4_31;
+ int16x8_t s5_0, s5_1, s5_2, s5_3, s5_5, s5_6, s5_8, s5_9, s5_10, s5_11, s5_12,
+ s5_13, s5_14, s5_15, s5_18, s5_19, s5_20, s5_21, s5_26, s5_27, s5_28,
+ s5_29;
+ int16x8_t s6_0, s6_1, s6_2, s6_3, s6_4, s6_5, s6_6, s6_7, s6_10, s6_11, s6_12,
+ s6_13, s6_16, s6_17, s6_18, s6_19, s6_20, s6_21, s6_22, s6_23, s6_24,
+ s6_25, s6_26, s6_27, s6_28, s6_29, s6_30, s6_31;
+ int16x8_t s7_0, s7_1, s7_2, s7_3, s7_4, s7_5, s7_6, s7_7, s7_8, s7_9, s7_10,
+ s7_11, s7_12, s7_13, s7_14, s7_15, s7_20, s7_21, s7_22, s7_23, s7_24,
+ s7_25, s7_26, s7_27;
+ int16x8_t out0, out1, out2, out3, out4, out5, out6, out7;
+
+ load_and_transpose_s16_8x8(input, 16, &in0, &in1, &in2, &in3, &in4, &in5,
+ &in6, &in7);
+
+ load_and_transpose_s16_8x8(input + 8, 16, &in8, &in9, &in10, &in11, &in12,
+ &in13, &in14, &in15);
+
+ // stage 1
+ s1_16 = multiply_shift_and_narrow_s16(in1, cospi_31_64);
+ s1_31 = multiply_shift_and_narrow_s16(in1, cospi_1_64);
+
+ s1_17 = multiply_shift_and_narrow_s16(in15, -cospi_17_64);
+ s1_30 = multiply_shift_and_narrow_s16(in15, cospi_15_64);
+
+ s1_18 = multiply_shift_and_narrow_s16(in9, cospi_23_64);
+ s1_29 = multiply_shift_and_narrow_s16(in9, cospi_9_64);
+
+ s1_19 = multiply_shift_and_narrow_s16(in7, -cospi_25_64);
+ s1_28 = multiply_shift_and_narrow_s16(in7, cospi_7_64);
+
+ s1_20 = multiply_shift_and_narrow_s16(in5, cospi_27_64);
+ s1_27 = multiply_shift_and_narrow_s16(in5, cospi_5_64);
+
+ s1_21 = multiply_shift_and_narrow_s16(in11, -cospi_21_64);
+ s1_26 = multiply_shift_and_narrow_s16(in11, cospi_11_64);
+
+ s1_22 = multiply_shift_and_narrow_s16(in13, cospi_19_64);
+ s1_25 = multiply_shift_and_narrow_s16(in13, cospi_13_64);
+
+ s1_23 = multiply_shift_and_narrow_s16(in3, -cospi_29_64);
+ s1_24 = multiply_shift_and_narrow_s16(in3, cospi_3_64);
+
+ // stage 2
+ s2_8 = multiply_shift_and_narrow_s16(in2, cospi_30_64);
+ s2_15 = multiply_shift_and_narrow_s16(in2, cospi_2_64);
+
+ s2_9 = multiply_shift_and_narrow_s16(in14, -cospi_18_64);
+ s2_14 = multiply_shift_and_narrow_s16(in14, cospi_14_64);
+
+ s2_10 = multiply_shift_and_narrow_s16(in10, cospi_22_64);
+ s2_13 = multiply_shift_and_narrow_s16(in10, cospi_10_64);
+
+ s2_11 = multiply_shift_and_narrow_s16(in6, -cospi_26_64);
+ s2_12 = multiply_shift_and_narrow_s16(in6, cospi_6_64);
+
+ s2_16 = vaddq_s16(s1_16, s1_17);
+ s2_17 = vsubq_s16(s1_16, s1_17);
+ s2_18 = vsubq_s16(s1_19, s1_18);
+ s2_19 = vaddq_s16(s1_18, s1_19);
+ s2_20 = vaddq_s16(s1_20, s1_21);
+ s2_21 = vsubq_s16(s1_20, s1_21);
+ s2_22 = vsubq_s16(s1_23, s1_22);
+ s2_23 = vaddq_s16(s1_22, s1_23);
+ s2_24 = vaddq_s16(s1_24, s1_25);
+ s2_25 = vsubq_s16(s1_24, s1_25);
+ s2_26 = vsubq_s16(s1_27, s1_26);
+ s2_27 = vaddq_s16(s1_26, s1_27);
+ s2_28 = vaddq_s16(s1_28, s1_29);
+ s2_29 = vsubq_s16(s1_28, s1_29);
+ s2_30 = vsubq_s16(s1_31, s1_30);
+ s2_31 = vaddq_s16(s1_30, s1_31);
+
+ // stage 3
+ s3_4 = multiply_shift_and_narrow_s16(in4, cospi_28_64);
+ s3_7 = multiply_shift_and_narrow_s16(in4, cospi_4_64);
+
+ s3_5 = multiply_shift_and_narrow_s16(in12, -cospi_20_64);
+ s3_6 = multiply_shift_and_narrow_s16(in12, cospi_12_64);
+
+ s3_8 = vaddq_s16(s2_8, s2_9);
+ s3_9 = vsubq_s16(s2_8, s2_9);
+ s3_10 = vsubq_s16(s2_11, s2_10);
+ s3_11 = vaddq_s16(s2_10, s2_11);
+ s3_12 = vaddq_s16(s2_12, s2_13);
+ s3_13 = vsubq_s16(s2_12, s2_13);
+ s3_14 = vsubq_s16(s2_15, s2_14);
+ s3_15 = vaddq_s16(s2_14, s2_15);
+
+ s3_17 = multiply_accumulate_shift_and_narrow_s16(s2_17, -cospi_4_64, s2_30,
+ cospi_28_64);
+ s3_30 = multiply_accumulate_shift_and_narrow_s16(s2_17, cospi_28_64, s2_30,
+ cospi_4_64);
+
+ s3_18 = multiply_accumulate_shift_and_narrow_s16(s2_18, -cospi_28_64, s2_29,
+ -cospi_4_64);
+ s3_29 = multiply_accumulate_shift_and_narrow_s16(s2_18, -cospi_4_64, s2_29,
+ cospi_28_64);
+
+ s3_21 = multiply_accumulate_shift_and_narrow_s16(s2_21, -cospi_20_64, s2_26,
+ cospi_12_64);
+ s3_26 = multiply_accumulate_shift_and_narrow_s16(s2_21, cospi_12_64, s2_26,
+ cospi_20_64);
+
+ s3_22 = multiply_accumulate_shift_and_narrow_s16(s2_22, -cospi_12_64, s2_25,
+ -cospi_20_64);
+ s3_25 = multiply_accumulate_shift_and_narrow_s16(s2_22, -cospi_20_64, s2_25,
+ cospi_12_64);
+
+ // stage 4
+ s4_0 = multiply_shift_and_narrow_s16(in0, cospi_16_64);
+ s4_2 = multiply_shift_and_narrow_s16(in8, cospi_24_64);
+ s4_3 = multiply_shift_and_narrow_s16(in8, cospi_8_64);
+
+ s4_4 = vaddq_s16(s3_4, s3_5);
+ s4_5 = vsubq_s16(s3_4, s3_5);
+ s4_6 = vsubq_s16(s3_7, s3_6);
+ s4_7 = vaddq_s16(s3_6, s3_7);
+
+ s4_9 = multiply_accumulate_shift_and_narrow_s16(s3_9, -cospi_8_64, s3_14,
+ cospi_24_64);
+ s4_14 = multiply_accumulate_shift_and_narrow_s16(s3_9, cospi_24_64, s3_14,
+ cospi_8_64);
+
+ s4_10 = multiply_accumulate_shift_and_narrow_s16(s3_10, -cospi_24_64, s3_13,
+ -cospi_8_64);
+ s4_13 = multiply_accumulate_shift_and_narrow_s16(s3_10, -cospi_8_64, s3_13,
+ cospi_24_64);
+
+ s4_16 = vaddq_s16(s2_16, s2_19);
+ s4_17 = vaddq_s16(s3_17, s3_18);
+ s4_18 = vsubq_s16(s3_17, s3_18);
+ s4_19 = vsubq_s16(s2_16, s2_19);
+ s4_20 = vsubq_s16(s2_23, s2_20);
+ s4_21 = vsubq_s16(s3_22, s3_21);
+ s4_22 = vaddq_s16(s3_21, s3_22);
+ s4_23 = vaddq_s16(s2_20, s2_23);
+ s4_24 = vaddq_s16(s2_24, s2_27);
+ s4_25 = vaddq_s16(s3_25, s3_26);
+ s4_26 = vsubq_s16(s3_25, s3_26);
+ s4_27 = vsubq_s16(s2_24, s2_27);
+ s4_28 = vsubq_s16(s2_31, s2_28);
+ s4_29 = vsubq_s16(s3_30, s3_29);
+ s4_30 = vaddq_s16(s3_29, s3_30);
+ s4_31 = vaddq_s16(s2_28, s2_31);
+
+ // stage 5
+ s5_0 = vaddq_s16(s4_0, s4_3);
+ s5_1 = vaddq_s16(s4_0, s4_2);
+ s5_2 = vsubq_s16(s4_0, s4_2);
+ s5_3 = vsubq_s16(s4_0, s4_3);
+
+ s5_5 = sub_multiply_shift_and_narrow_s16(s4_6, s4_5, cospi_16_64);
+ s5_6 = add_multiply_shift_and_narrow_s16(s4_5, s4_6, cospi_16_64);
+
+ s5_8 = vaddq_s16(s3_8, s3_11);
+ s5_9 = vaddq_s16(s4_9, s4_10);
+ s5_10 = vsubq_s16(s4_9, s4_10);
+ s5_11 = vsubq_s16(s3_8, s3_11);
+ s5_12 = vsubq_s16(s3_15, s3_12);
+ s5_13 = vsubq_s16(s4_14, s4_13);
+ s5_14 = vaddq_s16(s4_13, s4_14);
+ s5_15 = vaddq_s16(s3_15, s3_12);
+
+ s5_18 = multiply_accumulate_shift_and_narrow_s16(s4_18, -cospi_8_64, s4_29,
+ cospi_24_64);
+ s5_29 = multiply_accumulate_shift_and_narrow_s16(s4_18, cospi_24_64, s4_29,
+ cospi_8_64);
+
+ s5_19 = multiply_accumulate_shift_and_narrow_s16(s4_19, -cospi_8_64, s4_28,
+ cospi_24_64);
+ s5_28 = multiply_accumulate_shift_and_narrow_s16(s4_19, cospi_24_64, s4_28,
+ cospi_8_64);
+
+ s5_20 = multiply_accumulate_shift_and_narrow_s16(s4_20, -cospi_24_64, s4_27,
+ -cospi_8_64);
+ s5_27 = multiply_accumulate_shift_and_narrow_s16(s4_20, -cospi_8_64, s4_27,
+ cospi_24_64);
+
+ s5_21 = multiply_accumulate_shift_and_narrow_s16(s4_21, -cospi_24_64, s4_26,
+ -cospi_8_64);
+ s5_26 = multiply_accumulate_shift_and_narrow_s16(s4_21, -cospi_8_64, s4_26,
+ cospi_24_64);
+
+ // stage 6
+ s6_0 = vaddq_s16(s5_0, s4_7);
+ s6_1 = vaddq_s16(s5_1, s5_6);
+ s6_2 = vaddq_s16(s5_2, s5_5);
+ s6_3 = vaddq_s16(s5_3, s4_4);
+ s6_4 = vsubq_s16(s5_3, s4_4);
+ s6_5 = vsubq_s16(s5_2, s5_5);
+ s6_6 = vsubq_s16(s5_1, s5_6);
+ s6_7 = vsubq_s16(s5_0, s4_7);
+
+ s6_10 = sub_multiply_shift_and_narrow_s16(s5_13, s5_10, cospi_16_64);
+ s6_13 = add_multiply_shift_and_narrow_s16(s5_10, s5_13, cospi_16_64);
+
+ s6_11 = sub_multiply_shift_and_narrow_s16(s5_12, s5_11, cospi_16_64);
+ s6_12 = add_multiply_shift_and_narrow_s16(s5_11, s5_12, cospi_16_64);
+
+ s6_16 = vaddq_s16(s4_16, s4_23);
+ s6_17 = vaddq_s16(s4_17, s4_22);
+ s6_18 = vaddq_s16(s5_18, s5_21);
+ s6_19 = vaddq_s16(s5_19, s5_20);
+ s6_20 = vsubq_s16(s5_19, s5_20);
+ s6_21 = vsubq_s16(s5_18, s5_21);
+ s6_22 = vsubq_s16(s4_17, s4_22);
+ s6_23 = vsubq_s16(s4_16, s4_23);
+ s6_24 = vsubq_s16(s4_31, s4_24);
+ s6_25 = vsubq_s16(s4_30, s4_25);
+ s6_26 = vsubq_s16(s5_29, s5_26);
+ s6_27 = vsubq_s16(s5_28, s5_27);
+ s6_28 = vaddq_s16(s5_27, s5_28);
+ s6_29 = vaddq_s16(s5_26, s5_29);
+ s6_30 = vaddq_s16(s4_25, s4_30);
+ s6_31 = vaddq_s16(s4_24, s4_31);
+
+ // stage 7
+ s7_0 = vaddq_s16(s6_0, s5_15);
+ s7_1 = vaddq_s16(s6_1, s5_14);
+ s7_2 = vaddq_s16(s6_2, s6_13);
+ s7_3 = vaddq_s16(s6_3, s6_12);
+ s7_4 = vaddq_s16(s6_4, s6_11);
+ s7_5 = vaddq_s16(s6_5, s6_10);
+ s7_6 = vaddq_s16(s6_6, s5_9);
+ s7_7 = vaddq_s16(s6_7, s5_8);
+ s7_8 = vsubq_s16(s6_7, s5_8);
+ s7_9 = vsubq_s16(s6_6, s5_9);
+ s7_10 = vsubq_s16(s6_5, s6_10);
+ s7_11 = vsubq_s16(s6_4, s6_11);
+ s7_12 = vsubq_s16(s6_3, s6_12);
+ s7_13 = vsubq_s16(s6_2, s6_13);
+ s7_14 = vsubq_s16(s6_1, s5_14);
+ s7_15 = vsubq_s16(s6_0, s5_15);
+
+ s7_20 = sub_multiply_shift_and_narrow_s16(s6_27, s6_20, cospi_16_64);
+ s7_27 = add_multiply_shift_and_narrow_s16(s6_20, s6_27, cospi_16_64);
+
+ s7_21 = sub_multiply_shift_and_narrow_s16(s6_26, s6_21, cospi_16_64);
+ s7_26 = add_multiply_shift_and_narrow_s16(s6_21, s6_26, cospi_16_64);
+
+ s7_22 = sub_multiply_shift_and_narrow_s16(s6_25, s6_22, cospi_16_64);
+ s7_25 = add_multiply_shift_and_narrow_s16(s6_22, s6_25, cospi_16_64);
+
+ s7_23 = sub_multiply_shift_and_narrow_s16(s6_24, s6_23, cospi_16_64);
+ s7_24 = add_multiply_shift_and_narrow_s16(s6_23, s6_24, cospi_16_64);
+
+ // final stage
+ out0 = vaddq_s16(s7_0, s6_31);
+ out1 = vaddq_s16(s7_1, s6_30);
+ out2 = vaddq_s16(s7_2, s6_29);
+ out3 = vaddq_s16(s7_3, s6_28);
+ out4 = vaddq_s16(s7_4, s7_27);
+ out5 = vaddq_s16(s7_5, s7_26);
+ out6 = vaddq_s16(s7_6, s7_25);
+ out7 = vaddq_s16(s7_7, s7_24);
+
+ add_and_store_u8_s16(out0, out1, out2, out3, out4, out5, out6, out7, output,
+ stride);
+
+ out0 = vaddq_s16(s7_8, s7_23);
+ out1 = vaddq_s16(s7_9, s7_22);
+ out2 = vaddq_s16(s7_10, s7_21);
+ out3 = vaddq_s16(s7_11, s7_20);
+ out4 = vaddq_s16(s7_12, s6_19);
+ out5 = vaddq_s16(s7_13, s6_18);
+ out6 = vaddq_s16(s7_14, s6_17);
+ out7 = vaddq_s16(s7_15, s6_16);
+
+ add_and_store_u8_s16(out0, out1, out2, out3, out4, out5, out6, out7,
+ output + (8 * stride), stride);
+
+ out0 = vsubq_s16(s7_15, s6_16);
+ out1 = vsubq_s16(s7_14, s6_17);
+ out2 = vsubq_s16(s7_13, s6_18);
+ out3 = vsubq_s16(s7_12, s6_19);
+ out4 = vsubq_s16(s7_11, s7_20);
+ out5 = vsubq_s16(s7_10, s7_21);
+ out6 = vsubq_s16(s7_9, s7_22);
+ out7 = vsubq_s16(s7_8, s7_23);
+
+ add_and_store_u8_s16(out0, out1, out2, out3, out4, out5, out6, out7,
+ output + (16 * stride), stride);
+
+ out0 = vsubq_s16(s7_7, s7_24);
+ out1 = vsubq_s16(s7_6, s7_25);
+ out2 = vsubq_s16(s7_5, s7_26);
+ out3 = vsubq_s16(s7_4, s7_27);
+ out4 = vsubq_s16(s7_3, s6_28);
+ out5 = vsubq_s16(s7_2, s6_29);
+ out6 = vsubq_s16(s7_1, s6_30);
+ out7 = vsubq_s16(s7_0, s6_31);
+
+ add_and_store_u8_s16(out0, out1, out2, out3, out4, out5, out6, out7,
+ output + (24 * stride), stride);
+}
+
+void vpx_idct32x32_135_add_neon(const int16_t *input, uint8_t *dest,
+ int stride) {
+ int i;
+ int16_t temp[32 * 16];
+ int16_t *t = temp;
+
+ idct32_12_neon(input, temp);
+ idct32_12_neon(input + 32 * 8, temp + 8);
+
+ for (i = 0; i < 32; i += 8) {
+ idct32_16_neon(t, dest, stride);
+ t += (16 * 8);
+ dest += 8;
+ }
+}
projects / libvpx / commitdiff