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-rw-r--r--media/libvpx/libvpx/vpx_dsp/arm/idct32x32_add_neon.c776
1 files changed, 776 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vpx_dsp/arm/idct32x32_add_neon.c b/media/libvpx/libvpx/vpx_dsp/arm/idct32x32_add_neon.c
new file mode 100644
index 0000000000..9f4589ea96
--- /dev/null
+++ b/media/libvpx/libvpx/vpx_dsp/arm/idct32x32_add_neon.c
@@ -0,0 +1,776 @@
+/*
+ * 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 "./vpx_config.h"
+#include "./vpx_dsp_rtcd.h"
+#include "vpx_dsp/arm/idct_neon.h"
+#include "vpx_dsp/arm/mem_neon.h"
+#include "vpx_dsp/arm/transpose_neon.h"
+#include "vpx_dsp/txfm_common.h"
+
+static INLINE void load_from_transformed(const int16_t *const trans_buf,
+ const int first, const int second,
+ int16x8_t *const q0,
+ int16x8_t *const q1) {
+ *q0 = vld1q_s16(trans_buf + first * 8);
+ *q1 = vld1q_s16(trans_buf + second * 8);
+}
+
+static INLINE void load_from_output(const int16_t *const out, const int first,
+ const int second, int16x8_t *const q0,
+ int16x8_t *const q1) {
+ *q0 = vld1q_s16(out + first * 32);
+ *q1 = vld1q_s16(out + second * 32);
+}
+
+static INLINE void store_in_output(int16_t *const out, const int first,
+ const int second, const int16x8_t q0,
+ const int16x8_t q1) {
+ vst1q_s16(out + first * 32, q0);
+ vst1q_s16(out + second * 32, q1);
+}
+
+static INLINE void store_combine_results(uint8_t *p1, uint8_t *p2,
+ const int stride, int16x8_t q0,
+ int16x8_t q1, int16x8_t q2,
+ int16x8_t q3) {
+ uint8x8_t d[4];
+
+ d[0] = vld1_u8(p1);
+ p1 += stride;
+ d[1] = vld1_u8(p1);
+ d[3] = vld1_u8(p2);
+ p2 -= stride;
+ d[2] = vld1_u8(p2);
+
+ q0 = vrshrq_n_s16(q0, 6);
+ q1 = vrshrq_n_s16(q1, 6);
+ q2 = vrshrq_n_s16(q2, 6);
+ q3 = vrshrq_n_s16(q3, 6);
+
+ q0 = vreinterpretq_s16_u16(vaddw_u8(vreinterpretq_u16_s16(q0), d[0]));
+ q1 = vreinterpretq_s16_u16(vaddw_u8(vreinterpretq_u16_s16(q1), d[1]));
+ q2 = vreinterpretq_s16_u16(vaddw_u8(vreinterpretq_u16_s16(q2), d[2]));
+ q3 = vreinterpretq_s16_u16(vaddw_u8(vreinterpretq_u16_s16(q3), d[3]));
+
+ d[0] = vqmovun_s16(q0);
+ d[1] = vqmovun_s16(q1);
+ d[2] = vqmovun_s16(q2);
+ d[3] = vqmovun_s16(q3);
+
+ vst1_u8(p1, d[1]);
+ p1 -= stride;
+ vst1_u8(p1, d[0]);
+ vst1_u8(p2, d[2]);
+ p2 += stride;
+ vst1_u8(p2, d[3]);
+}
+
+static INLINE void highbd_store_combine_results_bd8(uint16_t *p1, uint16_t *p2,
+ const int stride,
+ int16x8_t q0, int16x8_t q1,
+ int16x8_t q2,
+ int16x8_t q3) {
+ uint16x8_t d[4];
+
+ d[0] = vld1q_u16(p1);
+ p1 += stride;
+ d[1] = vld1q_u16(p1);
+ d[3] = vld1q_u16(p2);
+ p2 -= stride;
+ d[2] = vld1q_u16(p2);
+
+ q0 = vrshrq_n_s16(q0, 6);
+ q1 = vrshrq_n_s16(q1, 6);
+ q2 = vrshrq_n_s16(q2, 6);
+ q3 = vrshrq_n_s16(q3, 6);
+
+ q0 = vaddq_s16(q0, vreinterpretq_s16_u16(d[0]));
+ q1 = vaddq_s16(q1, vreinterpretq_s16_u16(d[1]));
+ q2 = vaddq_s16(q2, vreinterpretq_s16_u16(d[2]));
+ q3 = vaddq_s16(q3, vreinterpretq_s16_u16(d[3]));
+
+ d[0] = vmovl_u8(vqmovun_s16(q0));
+ d[1] = vmovl_u8(vqmovun_s16(q1));
+ d[2] = vmovl_u8(vqmovun_s16(q2));
+ d[3] = vmovl_u8(vqmovun_s16(q3));
+
+ vst1q_u16(p1, d[1]);
+ p1 -= stride;
+ vst1q_u16(p1, d[0]);
+ vst1q_u16(p2, d[2]);
+ p2 += stride;
+ vst1q_u16(p2, d[3]);
+}
+
+static INLINE void do_butterfly(const int16x8_t qIn0, const int16x8_t qIn1,
+ const int16_t first_const,
+ const int16_t second_const,
+ int16x8_t *const qOut0,
+ int16x8_t *const qOut1) {
+ int32x4_t q[4];
+ int16x4_t d[6];
+
+ d[0] = vget_low_s16(qIn0);
+ d[1] = vget_high_s16(qIn0);
+ d[2] = vget_low_s16(qIn1);
+ d[3] = vget_high_s16(qIn1);
+
+ // Note: using v{mul, mla, mls}l_n_s16 here slows down 35% with gcc 4.9.
+ d[4] = vdup_n_s16(first_const);
+ d[5] = vdup_n_s16(second_const);
+
+ q[0] = vmull_s16(d[0], d[4]);
+ q[1] = vmull_s16(d[1], d[4]);
+ q[0] = vmlsl_s16(q[0], d[2], d[5]);
+ q[1] = vmlsl_s16(q[1], d[3], d[5]);
+
+ q[2] = vmull_s16(d[0], d[5]);
+ q[3] = vmull_s16(d[1], d[5]);
+ q[2] = vmlal_s16(q[2], d[2], d[4]);
+ q[3] = vmlal_s16(q[3], d[3], d[4]);
+
+ *qOut0 = vcombine_s16(vrshrn_n_s32(q[0], DCT_CONST_BITS),
+ vrshrn_n_s32(q[1], DCT_CONST_BITS));
+ *qOut1 = vcombine_s16(vrshrn_n_s32(q[2], DCT_CONST_BITS),
+ vrshrn_n_s32(q[3], DCT_CONST_BITS));
+}
+
+static INLINE void load_s16x8q(const int16_t *in, int16x8_t *const s0,
+ int16x8_t *const s1, int16x8_t *const s2,
+ int16x8_t *const s3, int16x8_t *const s4,
+ int16x8_t *const s5, int16x8_t *const s6,
+ int16x8_t *const s7) {
+ *s0 = vld1q_s16(in);
+ in += 32;
+ *s1 = vld1q_s16(in);
+ in += 32;
+ *s2 = vld1q_s16(in);
+ in += 32;
+ *s3 = vld1q_s16(in);
+ in += 32;
+ *s4 = vld1q_s16(in);
+ in += 32;
+ *s5 = vld1q_s16(in);
+ in += 32;
+ *s6 = vld1q_s16(in);
+ in += 32;
+ *s7 = vld1q_s16(in);
+}
+
+static INLINE void transpose_and_store_s16_8x8(int16x8_t a0, int16x8_t a1,
+ int16x8_t a2, int16x8_t a3,
+ int16x8_t a4, int16x8_t a5,
+ int16x8_t a6, int16x8_t a7,
+ int16_t **out) {
+ transpose_s16_8x8(&a0, &a1, &a2, &a3, &a4, &a5, &a6, &a7);
+
+ vst1q_s16(*out, a0);
+ *out += 8;
+ vst1q_s16(*out, a1);
+ *out += 8;
+ vst1q_s16(*out, a2);
+ *out += 8;
+ vst1q_s16(*out, a3);
+ *out += 8;
+ vst1q_s16(*out, a4);
+ *out += 8;
+ vst1q_s16(*out, a5);
+ *out += 8;
+ vst1q_s16(*out, a6);
+ *out += 8;
+ vst1q_s16(*out, a7);
+ *out += 8;
+}
+
+static INLINE void idct32_transpose_pair(const int16_t *input, int16_t *t_buf) {
+ int i;
+ int16x8_t s0, s1, s2, s3, s4, s5, s6, s7;
+
+ for (i = 0; i < 4; i++, input += 8) {
+ load_s16x8q(input, &s0, &s1, &s2, &s3, &s4, &s5, &s6, &s7);
+ transpose_and_store_s16_8x8(s0, s1, s2, s3, s4, s5, s6, s7, &t_buf);
+ }
+}
+
+#if CONFIG_VP9_HIGHBITDEPTH
+static INLINE void load_s16x8q_tran_low(
+ const tran_low_t *in, int16x8_t *const s0, int16x8_t *const s1,
+ int16x8_t *const s2, int16x8_t *const s3, int16x8_t *const s4,
+ int16x8_t *const s5, int16x8_t *const s6, int16x8_t *const s7) {
+ *s0 = load_tran_low_to_s16q(in);
+ in += 32;
+ *s1 = load_tran_low_to_s16q(in);
+ in += 32;
+ *s2 = load_tran_low_to_s16q(in);
+ in += 32;
+ *s3 = load_tran_low_to_s16q(in);
+ in += 32;
+ *s4 = load_tran_low_to_s16q(in);
+ in += 32;
+ *s5 = load_tran_low_to_s16q(in);
+ in += 32;
+ *s6 = load_tran_low_to_s16q(in);
+ in += 32;
+ *s7 = load_tran_low_to_s16q(in);
+}
+
+static INLINE void idct32_transpose_pair_tran_low(const tran_low_t *input,
+ int16_t *t_buf) {
+ int i;
+ int16x8_t s0, s1, s2, s3, s4, s5, s6, s7;
+
+ for (i = 0; i < 4; i++, input += 8) {
+ load_s16x8q_tran_low(input, &s0, &s1, &s2, &s3, &s4, &s5, &s6, &s7);
+ transpose_and_store_s16_8x8(s0, s1, s2, s3, s4, s5, s6, s7, &t_buf);
+ }
+}
+#else // !CONFIG_VP9_HIGHBITDEPTH
+#define idct32_transpose_pair_tran_low idct32_transpose_pair
+#endif // CONFIG_VP9_HIGHBITDEPTH
+
+static INLINE void idct32_bands_end_1st_pass(int16_t *const out,
+ int16x8_t *const q) {
+ store_in_output(out, 16, 17, q[6], q[7]);
+ store_in_output(out, 14, 15, q[8], q[9]);
+
+ load_from_output(out, 30, 31, &q[0], &q[1]);
+ q[4] = vaddq_s16(q[2], q[1]);
+ q[5] = vaddq_s16(q[3], q[0]);
+ q[6] = vsubq_s16(q[3], q[0]);
+ q[7] = vsubq_s16(q[2], q[1]);
+ store_in_output(out, 30, 31, q[6], q[7]);
+ store_in_output(out, 0, 1, q[4], q[5]);
+
+ load_from_output(out, 12, 13, &q[0], &q[1]);
+ q[2] = vaddq_s16(q[10], q[1]);
+ q[3] = vaddq_s16(q[11], q[0]);
+ q[4] = vsubq_s16(q[11], q[0]);
+ q[5] = vsubq_s16(q[10], q[1]);
+
+ load_from_output(out, 18, 19, &q[0], &q[1]);
+ q[8] = vaddq_s16(q[4], q[1]);
+ q[9] = vaddq_s16(q[5], q[0]);
+ q[6] = vsubq_s16(q[5], q[0]);
+ q[7] = vsubq_s16(q[4], q[1]);
+ store_in_output(out, 18, 19, q[6], q[7]);
+ store_in_output(out, 12, 13, q[8], q[9]);
+
+ load_from_output(out, 28, 29, &q[0], &q[1]);
+ q[4] = vaddq_s16(q[2], q[1]);
+ q[5] = vaddq_s16(q[3], q[0]);
+ q[6] = vsubq_s16(q[3], q[0]);
+ q[7] = vsubq_s16(q[2], q[1]);
+ store_in_output(out, 28, 29, q[6], q[7]);
+ store_in_output(out, 2, 3, q[4], q[5]);
+
+ load_from_output(out, 10, 11, &q[0], &q[1]);
+ q[2] = vaddq_s16(q[12], q[1]);
+ q[3] = vaddq_s16(q[13], q[0]);
+ q[4] = vsubq_s16(q[13], q[0]);
+ q[5] = vsubq_s16(q[12], q[1]);
+
+ load_from_output(out, 20, 21, &q[0], &q[1]);
+ q[8] = vaddq_s16(q[4], q[1]);
+ q[9] = vaddq_s16(q[5], q[0]);
+ q[6] = vsubq_s16(q[5], q[0]);
+ q[7] = vsubq_s16(q[4], q[1]);
+ store_in_output(out, 20, 21, q[6], q[7]);
+ store_in_output(out, 10, 11, q[8], q[9]);
+
+ load_from_output(out, 26, 27, &q[0], &q[1]);
+ q[4] = vaddq_s16(q[2], q[1]);
+ q[5] = vaddq_s16(q[3], q[0]);
+ q[6] = vsubq_s16(q[3], q[0]);
+ q[7] = vsubq_s16(q[2], q[1]);
+ store_in_output(out, 26, 27, q[6], q[7]);
+ store_in_output(out, 4, 5, q[4], q[5]);
+
+ load_from_output(out, 8, 9, &q[0], &q[1]);
+ q[2] = vaddq_s16(q[14], q[1]);
+ q[3] = vaddq_s16(q[15], q[0]);
+ q[4] = vsubq_s16(q[15], q[0]);
+ q[5] = vsubq_s16(q[14], q[1]);
+
+ load_from_output(out, 22, 23, &q[0], &q[1]);
+ q[8] = vaddq_s16(q[4], q[1]);
+ q[9] = vaddq_s16(q[5], q[0]);
+ q[6] = vsubq_s16(q[5], q[0]);
+ q[7] = vsubq_s16(q[4], q[1]);
+ store_in_output(out, 22, 23, q[6], q[7]);
+ store_in_output(out, 8, 9, q[8], q[9]);
+
+ load_from_output(out, 24, 25, &q[0], &q[1]);
+ q[4] = vaddq_s16(q[2], q[1]);
+ q[5] = vaddq_s16(q[3], q[0]);
+ q[6] = vsubq_s16(q[3], q[0]);
+ q[7] = vsubq_s16(q[2], q[1]);
+ store_in_output(out, 24, 25, q[6], q[7]);
+ store_in_output(out, 6, 7, q[4], q[5]);
+}
+
+static INLINE void idct32_bands_end_2nd_pass(const int16_t *const out,
+ uint8_t *const dest,
+ const int stride,
+ int16x8_t *const q) {
+ uint8_t *dest0 = dest + 0 * stride;
+ uint8_t *dest1 = dest + 31 * stride;
+ uint8_t *dest2 = dest + 16 * stride;
+ uint8_t *dest3 = dest + 15 * stride;
+ const int str2 = stride << 1;
+
+ store_combine_results(dest2, dest3, stride, q[6], q[7], q[8], q[9]);
+ dest2 += str2;
+ dest3 -= str2;
+
+ load_from_output(out, 30, 31, &q[0], &q[1]);
+ q[4] = final_add(q[2], q[1]);
+ q[5] = final_add(q[3], q[0]);
+ q[6] = final_sub(q[3], q[0]);
+ q[7] = final_sub(q[2], q[1]);
+ store_combine_results(dest0, dest1, stride, q[4], q[5], q[6], q[7]);
+ dest0 += str2;
+ dest1 -= str2;
+
+ load_from_output(out, 12, 13, &q[0], &q[1]);
+ q[2] = vaddq_s16(q[10], q[1]);
+ q[3] = vaddq_s16(q[11], q[0]);
+ q[4] = vsubq_s16(q[11], q[0]);
+ q[5] = vsubq_s16(q[10], q[1]);
+
+ load_from_output(out, 18, 19, &q[0], &q[1]);
+ q[8] = final_add(q[4], q[1]);
+ q[9] = final_add(q[5], q[0]);
+ q[6] = final_sub(q[5], q[0]);
+ q[7] = final_sub(q[4], q[1]);
+ store_combine_results(dest2, dest3, stride, q[6], q[7], q[8], q[9]);
+ dest2 += str2;
+ dest3 -= str2;
+
+ load_from_output(out, 28, 29, &q[0], &q[1]);
+ q[4] = final_add(q[2], q[1]);
+ q[5] = final_add(q[3], q[0]);
+ q[6] = final_sub(q[3], q[0]);
+ q[7] = final_sub(q[2], q[1]);
+ store_combine_results(dest0, dest1, stride, q[4], q[5], q[6], q[7]);
+ dest0 += str2;
+ dest1 -= str2;
+
+ load_from_output(out, 10, 11, &q[0], &q[1]);
+ q[2] = vaddq_s16(q[12], q[1]);
+ q[3] = vaddq_s16(q[13], q[0]);
+ q[4] = vsubq_s16(q[13], q[0]);
+ q[5] = vsubq_s16(q[12], q[1]);
+
+ load_from_output(out, 20, 21, &q[0], &q[1]);
+ q[8] = final_add(q[4], q[1]);
+ q[9] = final_add(q[5], q[0]);
+ q[6] = final_sub(q[5], q[0]);
+ q[7] = final_sub(q[4], q[1]);
+ store_combine_results(dest2, dest3, stride, q[6], q[7], q[8], q[9]);
+ dest2 += str2;
+ dest3 -= str2;
+
+ load_from_output(out, 26, 27, &q[0], &q[1]);
+ q[4] = final_add(q[2], q[1]);
+ q[5] = final_add(q[3], q[0]);
+ q[6] = final_sub(q[3], q[0]);
+ q[7] = final_sub(q[2], q[1]);
+ store_combine_results(dest0, dest1, stride, q[4], q[5], q[6], q[7]);
+ dest0 += str2;
+ dest1 -= str2;
+
+ load_from_output(out, 8, 9, &q[0], &q[1]);
+ q[2] = vaddq_s16(q[14], q[1]);
+ q[3] = vaddq_s16(q[15], q[0]);
+ q[4] = vsubq_s16(q[15], q[0]);
+ q[5] = vsubq_s16(q[14], q[1]);
+
+ load_from_output(out, 22, 23, &q[0], &q[1]);
+ q[8] = final_add(q[4], q[1]);
+ q[9] = final_add(q[5], q[0]);
+ q[6] = final_sub(q[5], q[0]);
+ q[7] = final_sub(q[4], q[1]);
+ store_combine_results(dest2, dest3, stride, q[6], q[7], q[8], q[9]);
+
+ load_from_output(out, 24, 25, &q[0], &q[1]);
+ q[4] = final_add(q[2], q[1]);
+ q[5] = final_add(q[3], q[0]);
+ q[6] = final_sub(q[3], q[0]);
+ q[7] = final_sub(q[2], q[1]);
+ store_combine_results(dest0, dest1, stride, q[4], q[5], q[6], q[7]);
+}
+
+static INLINE void highbd_idct32_bands_end_2nd_pass_bd8(
+ const int16_t *const out, uint16_t *const dest, const int stride,
+ int16x8_t *const q) {
+ uint16_t *dest0 = dest + 0 * stride;
+ uint16_t *dest1 = dest + 31 * stride;
+ uint16_t *dest2 = dest + 16 * stride;
+ uint16_t *dest3 = dest + 15 * stride;
+ const int str2 = stride << 1;
+
+ highbd_store_combine_results_bd8(dest2, dest3, stride, q[6], q[7], q[8],
+ q[9]);
+ dest2 += str2;
+ dest3 -= str2;
+
+ load_from_output(out, 30, 31, &q[0], &q[1]);
+ q[4] = final_add(q[2], q[1]);
+ q[5] = final_add(q[3], q[0]);
+ q[6] = final_sub(q[3], q[0]);
+ q[7] = final_sub(q[2], q[1]);
+ highbd_store_combine_results_bd8(dest0, dest1, stride, q[4], q[5], q[6],
+ q[7]);
+ dest0 += str2;
+ dest1 -= str2;
+
+ load_from_output(out, 12, 13, &q[0], &q[1]);
+ q[2] = vaddq_s16(q[10], q[1]);
+ q[3] = vaddq_s16(q[11], q[0]);
+ q[4] = vsubq_s16(q[11], q[0]);
+ q[5] = vsubq_s16(q[10], q[1]);
+
+ load_from_output(out, 18, 19, &q[0], &q[1]);
+ q[8] = final_add(q[4], q[1]);
+ q[9] = final_add(q[5], q[0]);
+ q[6] = final_sub(q[5], q[0]);
+ q[7] = final_sub(q[4], q[1]);
+ highbd_store_combine_results_bd8(dest2, dest3, stride, q[6], q[7], q[8],
+ q[9]);
+ dest2 += str2;
+ dest3 -= str2;
+
+ load_from_output(out, 28, 29, &q[0], &q[1]);
+ q[4] = final_add(q[2], q[1]);
+ q[5] = final_add(q[3], q[0]);
+ q[6] = final_sub(q[3], q[0]);
+ q[7] = final_sub(q[2], q[1]);
+ highbd_store_combine_results_bd8(dest0, dest1, stride, q[4], q[5], q[6],
+ q[7]);
+ dest0 += str2;
+ dest1 -= str2;
+
+ load_from_output(out, 10, 11, &q[0], &q[1]);
+ q[2] = vaddq_s16(q[12], q[1]);
+ q[3] = vaddq_s16(q[13], q[0]);
+ q[4] = vsubq_s16(q[13], q[0]);
+ q[5] = vsubq_s16(q[12], q[1]);
+
+ load_from_output(out, 20, 21, &q[0], &q[1]);
+ q[8] = final_add(q[4], q[1]);
+ q[9] = final_add(q[5], q[0]);
+ q[6] = final_sub(q[5], q[0]);
+ q[7] = final_sub(q[4], q[1]);
+ highbd_store_combine_results_bd8(dest2, dest3, stride, q[6], q[7], q[8],
+ q[9]);
+ dest2 += str2;
+ dest3 -= str2;
+
+ load_from_output(out, 26, 27, &q[0], &q[1]);
+ q[4] = final_add(q[2], q[1]);
+ q[5] = final_add(q[3], q[0]);
+ q[6] = final_sub(q[3], q[0]);
+ q[7] = final_sub(q[2], q[1]);
+ highbd_store_combine_results_bd8(dest0, dest1, stride, q[4], q[5], q[6],
+ q[7]);
+ dest0 += str2;
+ dest1 -= str2;
+
+ load_from_output(out, 8, 9, &q[0], &q[1]);
+ q[2] = vaddq_s16(q[14], q[1]);
+ q[3] = vaddq_s16(q[15], q[0]);
+ q[4] = vsubq_s16(q[15], q[0]);
+ q[5] = vsubq_s16(q[14], q[1]);
+
+ load_from_output(out, 22, 23, &q[0], &q[1]);
+ q[8] = final_add(q[4], q[1]);
+ q[9] = final_add(q[5], q[0]);
+ q[6] = final_sub(q[5], q[0]);
+ q[7] = final_sub(q[4], q[1]);
+ highbd_store_combine_results_bd8(dest2, dest3, stride, q[6], q[7], q[8],
+ q[9]);
+
+ load_from_output(out, 24, 25, &q[0], &q[1]);
+ q[4] = final_add(q[2], q[1]);
+ q[5] = final_add(q[3], q[0]);
+ q[6] = final_sub(q[3], q[0]);
+ q[7] = final_sub(q[2], q[1]);
+ highbd_store_combine_results_bd8(dest0, dest1, stride, q[4], q[5], q[6],
+ q[7]);
+}
+
+void vpx_idct32_32_neon(const tran_low_t *input, uint8_t *dest,
+ const int stride, const int highbd_flag) {
+ int i, idct32_pass_loop;
+ int16_t trans_buf[32 * 8];
+ int16_t pass1[32 * 32];
+ int16_t pass2[32 * 32];
+ const int16_t *input_pass2 = pass1; // input of pass2 is the result of pass1
+ int16_t *out;
+ int16x8_t q[16];
+ uint16_t *dst = CAST_TO_SHORTPTR(dest);
+
+ for (idct32_pass_loop = 0, out = pass1; idct32_pass_loop < 2;
+ idct32_pass_loop++, out = pass2) {
+ for (i = 0; i < 4; i++, out += 8) { // idct32_bands_loop
+ if (idct32_pass_loop == 0) {
+ idct32_transpose_pair_tran_low(input, trans_buf);
+ input += 32 * 8;
+ } else {
+ idct32_transpose_pair(input_pass2, trans_buf);
+ input_pass2 += 32 * 8;
+ }
+
+ // -----------------------------------------
+ // BLOCK A: 16-19,28-31
+ // -----------------------------------------
+ // generate 16,17,30,31
+ // part of stage 1
+ load_from_transformed(trans_buf, 1, 31, &q[14], &q[13]);
+ do_butterfly(q[14], q[13], cospi_31_64, cospi_1_64, &q[0], &q[2]);
+ load_from_transformed(trans_buf, 17, 15, &q[14], &q[13]);
+ do_butterfly(q[14], q[13], cospi_15_64, cospi_17_64, &q[1], &q[3]);
+ // part of stage 2
+ q[4] = vaddq_s16(q[0], q[1]);
+ q[13] = vsubq_s16(q[0], q[1]);
+ q[6] = vaddq_s16(q[2], q[3]);
+ q[14] = vsubq_s16(q[2], q[3]);
+ // part of stage 3
+ do_butterfly(q[14], q[13], cospi_28_64, cospi_4_64, &q[5], &q[7]);
+
+ // generate 18,19,28,29
+ // part of stage 1
+ load_from_transformed(trans_buf, 9, 23, &q[14], &q[13]);
+ do_butterfly(q[14], q[13], cospi_23_64, cospi_9_64, &q[0], &q[2]);
+ load_from_transformed(trans_buf, 25, 7, &q[14], &q[13]);
+ do_butterfly(q[14], q[13], cospi_7_64, cospi_25_64, &q[1], &q[3]);
+ // part of stage 2
+ q[13] = vsubq_s16(q[3], q[2]);
+ q[3] = vaddq_s16(q[3], q[2]);
+ q[14] = vsubq_s16(q[1], q[0]);
+ q[2] = vaddq_s16(q[1], q[0]);
+ // part of stage 3
+ do_butterfly(q[14], q[13], -cospi_4_64, -cospi_28_64, &q[1], &q[0]);
+ // part of stage 4
+ q[8] = vaddq_s16(q[4], q[2]);
+ q[9] = vaddq_s16(q[5], q[0]);
+ q[10] = vaddq_s16(q[7], q[1]);
+ q[15] = vaddq_s16(q[6], q[3]);
+ q[13] = vsubq_s16(q[5], q[0]);
+ q[14] = vsubq_s16(q[7], q[1]);
+ store_in_output(out, 16, 31, q[8], q[15]);
+ store_in_output(out, 17, 30, q[9], q[10]);
+ // part of stage 5
+ do_butterfly(q[14], q[13], cospi_24_64, cospi_8_64, &q[0], &q[1]);
+ store_in_output(out, 29, 18, q[1], q[0]);
+ // part of stage 4
+ q[13] = vsubq_s16(q[4], q[2]);
+ q[14] = vsubq_s16(q[6], q[3]);
+ // part of stage 5
+ do_butterfly(q[14], q[13], cospi_24_64, cospi_8_64, &q[4], &q[6]);
+ store_in_output(out, 19, 28, q[4], q[6]);
+
+ // -----------------------------------------
+ // BLOCK B: 20-23,24-27
+ // -----------------------------------------
+ // generate 20,21,26,27
+ // part of stage 1
+ load_from_transformed(trans_buf, 5, 27, &q[14], &q[13]);
+ do_butterfly(q[14], q[13], cospi_27_64, cospi_5_64, &q[0], &q[2]);
+ load_from_transformed(trans_buf, 21, 11, &q[14], &q[13]);
+ do_butterfly(q[14], q[13], cospi_11_64, cospi_21_64, &q[1], &q[3]);
+ // part of stage 2
+ q[13] = vsubq_s16(q[0], q[1]);
+ q[0] = vaddq_s16(q[0], q[1]);
+ q[14] = vsubq_s16(q[2], q[3]);
+ q[2] = vaddq_s16(q[2], q[3]);
+ // part of stage 3
+ do_butterfly(q[14], q[13], cospi_12_64, cospi_20_64, &q[1], &q[3]);
+
+ // generate 22,23,24,25
+ // part of stage 1
+ load_from_transformed(trans_buf, 13, 19, &q[14], &q[13]);
+ do_butterfly(q[14], q[13], cospi_19_64, cospi_13_64, &q[5], &q[7]);
+ load_from_transformed(trans_buf, 29, 3, &q[14], &q[13]);
+ do_butterfly(q[14], q[13], cospi_3_64, cospi_29_64, &q[4], &q[6]);
+ // part of stage 2
+ q[14] = vsubq_s16(q[4], q[5]);
+ q[5] = vaddq_s16(q[4], q[5]);
+ q[13] = vsubq_s16(q[6], q[7]);
+ q[6] = vaddq_s16(q[6], q[7]);
+ // part of stage 3
+ do_butterfly(q[14], q[13], -cospi_20_64, -cospi_12_64, &q[4], &q[7]);
+ // part of stage 4
+ q[10] = vaddq_s16(q[7], q[1]);
+ q[11] = vaddq_s16(q[5], q[0]);
+ q[12] = vaddq_s16(q[6], q[2]);
+ q[15] = vaddq_s16(q[4], q[3]);
+ // part of stage 6
+ load_from_output(out, 16, 17, &q[14], &q[13]);
+ q[8] = vaddq_s16(q[14], q[11]);
+ q[9] = vaddq_s16(q[13], q[10]);
+ q[13] = vsubq_s16(q[13], q[10]);
+ q[11] = vsubq_s16(q[14], q[11]);
+ store_in_output(out, 17, 16, q[9], q[8]);
+ load_from_output(out, 30, 31, &q[14], &q[9]);
+ q[8] = vsubq_s16(q[9], q[12]);
+ q[10] = vaddq_s16(q[14], q[15]);
+ q[14] = vsubq_s16(q[14], q[15]);
+ q[12] = vaddq_s16(q[9], q[12]);
+ store_in_output(out, 30, 31, q[10], q[12]);
+ // part of stage 7
+ do_butterfly(q[14], q[13], cospi_16_64, cospi_16_64, &q[13], &q[14]);
+ store_in_output(out, 25, 22, q[14], q[13]);
+ do_butterfly(q[8], q[11], cospi_16_64, cospi_16_64, &q[13], &q[14]);
+ store_in_output(out, 24, 23, q[14], q[13]);
+ // part of stage 4
+ q[14] = vsubq_s16(q[5], q[0]);
+ q[13] = vsubq_s16(q[6], q[2]);
+ do_butterfly(q[14], q[13], -cospi_8_64, -cospi_24_64, &q[5], &q[6]);
+ q[14] = vsubq_s16(q[7], q[1]);
+ q[13] = vsubq_s16(q[4], q[3]);
+ do_butterfly(q[14], q[13], -cospi_8_64, -cospi_24_64, &q[0], &q[1]);
+ // part of stage 6
+ load_from_output(out, 18, 19, &q[14], &q[13]);
+ q[8] = vaddq_s16(q[14], q[1]);
+ q[9] = vaddq_s16(q[13], q[6]);
+ q[13] = vsubq_s16(q[13], q[6]);
+ q[1] = vsubq_s16(q[14], q[1]);
+ store_in_output(out, 18, 19, q[8], q[9]);
+ load_from_output(out, 28, 29, &q[8], &q[9]);
+ q[14] = vsubq_s16(q[8], q[5]);
+ q[10] = vaddq_s16(q[8], q[5]);
+ q[11] = vaddq_s16(q[9], q[0]);
+ q[0] = vsubq_s16(q[9], q[0]);
+ store_in_output(out, 28, 29, q[10], q[11]);
+ // part of stage 7
+ do_butterfly(q[14], q[13], cospi_16_64, cospi_16_64, &q[13], &q[14]);
+ store_in_output(out, 20, 27, q[13], q[14]);
+ do_butterfly(q[0], q[1], cospi_16_64, cospi_16_64, &q[1], &q[0]);
+ store_in_output(out, 21, 26, q[1], q[0]);
+
+ // -----------------------------------------
+ // BLOCK C: 8-10,11-15
+ // -----------------------------------------
+ // generate 8,9,14,15
+ // part of stage 2
+ load_from_transformed(trans_buf, 2, 30, &q[14], &q[13]);
+ do_butterfly(q[14], q[13], cospi_30_64, cospi_2_64, &q[0], &q[2]);
+ load_from_transformed(trans_buf, 18, 14, &q[14], &q[13]);
+ do_butterfly(q[14], q[13], cospi_14_64, cospi_18_64, &q[1], &q[3]);
+ // part of stage 3
+ q[13] = vsubq_s16(q[0], q[1]);
+ q[0] = vaddq_s16(q[0], q[1]);
+ q[14] = vsubq_s16(q[2], q[3]);
+ q[2] = vaddq_s16(q[2], q[3]);
+ // part of stage 4
+ do_butterfly(q[14], q[13], cospi_24_64, cospi_8_64, &q[1], &q[3]);
+
+ // generate 10,11,12,13
+ // part of stage 2
+ load_from_transformed(trans_buf, 10, 22, &q[14], &q[13]);
+ do_butterfly(q[14], q[13], cospi_22_64, cospi_10_64, &q[5], &q[7]);
+ load_from_transformed(trans_buf, 26, 6, &q[14], &q[13]);
+ do_butterfly(q[14], q[13], cospi_6_64, cospi_26_64, &q[4], &q[6]);
+ // part of stage 3
+ q[14] = vsubq_s16(q[4], q[5]);
+ q[5] = vaddq_s16(q[4], q[5]);
+ q[13] = vsubq_s16(q[6], q[7]);
+ q[6] = vaddq_s16(q[6], q[7]);
+ // part of stage 4
+ do_butterfly(q[14], q[13], -cospi_8_64, -cospi_24_64, &q[4], &q[7]);
+ // part of stage 5
+ q[8] = vaddq_s16(q[0], q[5]);
+ q[9] = vaddq_s16(q[1], q[7]);
+ q[13] = vsubq_s16(q[1], q[7]);
+ q[14] = vsubq_s16(q[3], q[4]);
+ q[10] = vaddq_s16(q[3], q[4]);
+ q[15] = vaddq_s16(q[2], q[6]);
+ store_in_output(out, 8, 15, q[8], q[15]);
+ store_in_output(out, 9, 14, q[9], q[10]);
+ // part of stage 6
+ do_butterfly(q[14], q[13], cospi_16_64, cospi_16_64, &q[1], &q[3]);
+ store_in_output(out, 13, 10, q[3], q[1]);
+ q[13] = vsubq_s16(q[0], q[5]);
+ q[14] = vsubq_s16(q[2], q[6]);
+ do_butterfly(q[14], q[13], cospi_16_64, cospi_16_64, &q[1], &q[3]);
+ store_in_output(out, 11, 12, q[1], q[3]);
+
+ // -----------------------------------------
+ // BLOCK D: 0-3,4-7
+ // -----------------------------------------
+ // generate 4,5,6,7
+ // part of stage 3
+ load_from_transformed(trans_buf, 4, 28, &q[14], &q[13]);
+ do_butterfly(q[14], q[13], cospi_28_64, cospi_4_64, &q[0], &q[2]);
+ load_from_transformed(trans_buf, 20, 12, &q[14], &q[13]);
+ do_butterfly(q[14], q[13], cospi_12_64, cospi_20_64, &q[1], &q[3]);
+ // part of stage 4
+ q[13] = vsubq_s16(q[0], q[1]);
+ q[0] = vaddq_s16(q[0], q[1]);
+ q[14] = vsubq_s16(q[2], q[3]);
+ q[2] = vaddq_s16(q[2], q[3]);
+ // part of stage 5
+ do_butterfly(q[14], q[13], cospi_16_64, cospi_16_64, &q[1], &q[3]);
+
+ // generate 0,1,2,3
+ // part of stage 4
+ load_from_transformed(trans_buf, 0, 16, &q[14], &q[13]);
+ do_butterfly(q[14], q[13], cospi_16_64, cospi_16_64, &q[5], &q[7]);
+ load_from_transformed(trans_buf, 8, 24, &q[14], &q[13]);
+ do_butterfly(q[14], q[13], cospi_24_64, cospi_8_64, &q[14], &q[6]);
+ // part of stage 5
+ q[4] = vaddq_s16(q[7], q[6]);
+ q[7] = vsubq_s16(q[7], q[6]);
+ q[6] = vsubq_s16(q[5], q[14]);
+ q[5] = vaddq_s16(q[5], q[14]);
+ // part of stage 6
+ q[8] = vaddq_s16(q[4], q[2]);
+ q[9] = vaddq_s16(q[5], q[3]);
+ q[10] = vaddq_s16(q[6], q[1]);
+ q[11] = vaddq_s16(q[7], q[0]);
+ q[12] = vsubq_s16(q[7], q[0]);
+ q[13] = vsubq_s16(q[6], q[1]);
+ q[14] = vsubq_s16(q[5], q[3]);
+ q[15] = vsubq_s16(q[4], q[2]);
+ // part of stage 7
+ load_from_output(out, 14, 15, &q[0], &q[1]);
+ q[2] = vaddq_s16(q[8], q[1]);
+ q[3] = vaddq_s16(q[9], q[0]);
+ q[4] = vsubq_s16(q[9], q[0]);
+ q[5] = vsubq_s16(q[8], q[1]);
+ load_from_output(out, 16, 17, &q[0], &q[1]);
+ q[8] = final_add(q[4], q[1]);
+ q[9] = final_add(q[5], q[0]);
+ q[6] = final_sub(q[5], q[0]);
+ q[7] = final_sub(q[4], q[1]);
+
+ if (idct32_pass_loop == 0) {
+ idct32_bands_end_1st_pass(out, q);
+ } else {
+ if (highbd_flag) {
+ highbd_idct32_bands_end_2nd_pass_bd8(out, dst, stride, q);
+ dst += 8;
+ } else {
+ idct32_bands_end_2nd_pass(out, dest, stride, q);
+ dest += 8;
+ }
+ }
+ }
+ }
+}
+
+void vpx_idct32x32_1024_add_neon(const tran_low_t *input, uint8_t *dest,
+ int stride) {
+ vpx_idct32_32_neon(input, dest, stride, 0);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-01 07:37:52 +0000