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Unified Diff: source/libvpx/vp9/common/arm/neon/vp9_idct16x16_1_add_neon.c

Issue 812033011: libvpx: Pull from upstream (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/deps/third_party/libvpx/
Patch Set: Created 5 years, 11 months ago
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Index: source/libvpx/vp9/common/arm/neon/vp9_idct16x16_1_add_neon.c
===================================================================
--- source/libvpx/vp9/common/arm/neon/vp9_idct16x16_1_add_neon.c (revision 0)
+++ source/libvpx/vp9/common/arm/neon/vp9_idct16x16_1_add_neon.c (working copy)
@@ -0,0 +1,59 @@
+/*
+ * 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 "vp9/common/vp9_idct.h"
+
+void vp9_idct16x16_1_add_neon(
+ int16_t *input,
+ uint8_t *dest,
+ int dest_stride) {
+ uint8x8_t d2u8, d3u8, d30u8, d31u8;
+ uint64x1_t d2u64, d3u64, d4u64, d5u64;
+ uint16x8_t q0u16, q9u16, q10u16, q11u16, q12u16;
+ int16x8_t q0s16;
+ uint8_t *d1, *d2;
+ int16_t i, j, a1, cospi_16_64 = 11585;
+ int16_t out = dct_const_round_shift(input[0] * cospi_16_64);
+ out = dct_const_round_shift(out * cospi_16_64);
+ a1 = ROUND_POWER_OF_TWO(out, 6);
+
+ q0s16 = vdupq_n_s16(a1);
+ q0u16 = vreinterpretq_u16_s16(q0s16);
+
+ for (d1 = d2 = dest, i = 0; i < 4; i++) {
+ for (j = 0; j < 2; j++) {
+ d2u64 = vld1_u64((const uint64_t *)d1);
+ d3u64 = vld1_u64((const uint64_t *)(d1 + 8));
+ d1 += dest_stride;
+ d4u64 = vld1_u64((const uint64_t *)d1);
+ d5u64 = vld1_u64((const uint64_t *)(d1 + 8));
+ d1 += dest_stride;
+
+ q9u16 = vaddw_u8(q0u16, vreinterpret_u8_u64(d2u64));
+ q10u16 = vaddw_u8(q0u16, vreinterpret_u8_u64(d3u64));
+ q11u16 = vaddw_u8(q0u16, vreinterpret_u8_u64(d4u64));
+ q12u16 = vaddw_u8(q0u16, vreinterpret_u8_u64(d5u64));
+
+ d2u8 = vqmovun_s16(vreinterpretq_s16_u16(q9u16));
+ d3u8 = vqmovun_s16(vreinterpretq_s16_u16(q10u16));
+ d30u8 = vqmovun_s16(vreinterpretq_s16_u16(q11u16));
+ d31u8 = vqmovun_s16(vreinterpretq_s16_u16(q12u16));
+
+ vst1_u64((uint64_t *)d2, vreinterpret_u64_u8(d2u8));
+ vst1_u64((uint64_t *)(d2 + 8), vreinterpret_u64_u8(d3u8));
+ d2 += dest_stride;
+ vst1_u64((uint64_t *)d2, vreinterpret_u64_u8(d30u8));
+ vst1_u64((uint64_t *)(d2 + 8), vreinterpret_u64_u8(d31u8));
+ d2 += dest_stride;
+ }
+ }
+ return;
+}

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