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Unified Diff: source/libvpx/vp9/common/arm/neon/vp9_idct32x32_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_idct32x32_1_add_neon.c
===================================================================
--- source/libvpx/vp9/common/arm/neon/vp9_idct32x32_1_add_neon.c (revision 0)
+++ source/libvpx/vp9/common/arm/neon/vp9_idct32x32_1_add_neon.c (working copy)
@@ -0,0 +1,163 @@
+/*
+ * 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"
+
+#include "./vpx_config.h"
+
+static INLINE void LD_16x8(
+ uint8_t *d,
+ int d_stride,
+ uint8x16_t *q8u8,
+ uint8x16_t *q9u8,
+ uint8x16_t *q10u8,
+ uint8x16_t *q11u8,
+ uint8x16_t *q12u8,
+ uint8x16_t *q13u8,
+ uint8x16_t *q14u8,
+ uint8x16_t *q15u8) {
+ *q8u8 = vld1q_u8(d);
+ d += d_stride;
+ *q9u8 = vld1q_u8(d);
+ d += d_stride;
+ *q10u8 = vld1q_u8(d);
+ d += d_stride;
+ *q11u8 = vld1q_u8(d);
+ d += d_stride;
+ *q12u8 = vld1q_u8(d);
+ d += d_stride;
+ *q13u8 = vld1q_u8(d);
+ d += d_stride;
+ *q14u8 = vld1q_u8(d);
+ d += d_stride;
+ *q15u8 = vld1q_u8(d);
+ return;
+}
+
+static INLINE void ADD_DIFF_16x8(
+ uint8x16_t qdiffu8,
+ uint8x16_t *q8u8,
+ uint8x16_t *q9u8,
+ uint8x16_t *q10u8,
+ uint8x16_t *q11u8,
+ uint8x16_t *q12u8,
+ uint8x16_t *q13u8,
+ uint8x16_t *q14u8,
+ uint8x16_t *q15u8) {
+ *q8u8 = vqaddq_u8(*q8u8, qdiffu8);
+ *q9u8 = vqaddq_u8(*q9u8, qdiffu8);
+ *q10u8 = vqaddq_u8(*q10u8, qdiffu8);
+ *q11u8 = vqaddq_u8(*q11u8, qdiffu8);
+ *q12u8 = vqaddq_u8(*q12u8, qdiffu8);
+ *q13u8 = vqaddq_u8(*q13u8, qdiffu8);
+ *q14u8 = vqaddq_u8(*q14u8, qdiffu8);
+ *q15u8 = vqaddq_u8(*q15u8, qdiffu8);
+ return;
+}
+
+static INLINE void SUB_DIFF_16x8(
+ uint8x16_t qdiffu8,
+ uint8x16_t *q8u8,
+ uint8x16_t *q9u8,
+ uint8x16_t *q10u8,
+ uint8x16_t *q11u8,
+ uint8x16_t *q12u8,
+ uint8x16_t *q13u8,
+ uint8x16_t *q14u8,
+ uint8x16_t *q15u8) {
+ *q8u8 = vqsubq_u8(*q8u8, qdiffu8);
+ *q9u8 = vqsubq_u8(*q9u8, qdiffu8);
+ *q10u8 = vqsubq_u8(*q10u8, qdiffu8);
+ *q11u8 = vqsubq_u8(*q11u8, qdiffu8);
+ *q12u8 = vqsubq_u8(*q12u8, qdiffu8);
+ *q13u8 = vqsubq_u8(*q13u8, qdiffu8);
+ *q14u8 = vqsubq_u8(*q14u8, qdiffu8);
+ *q15u8 = vqsubq_u8(*q15u8, qdiffu8);
+ return;
+}
+
+static INLINE void ST_16x8(
+ uint8_t *d,
+ int d_stride,
+ uint8x16_t *q8u8,
+ uint8x16_t *q9u8,
+ uint8x16_t *q10u8,
+ uint8x16_t *q11u8,
+ uint8x16_t *q12u8,
+ uint8x16_t *q13u8,
+ uint8x16_t *q14u8,
+ uint8x16_t *q15u8) {
+ vst1q_u8(d, *q8u8);
+ d += d_stride;
+ vst1q_u8(d, *q9u8);
+ d += d_stride;
+ vst1q_u8(d, *q10u8);
+ d += d_stride;
+ vst1q_u8(d, *q11u8);
+ d += d_stride;
+ vst1q_u8(d, *q12u8);
+ d += d_stride;
+ vst1q_u8(d, *q13u8);
+ d += d_stride;
+ vst1q_u8(d, *q14u8);
+ d += d_stride;
+ vst1q_u8(d, *q15u8);
+ return;
+}
+
+void vp9_idct32x32_1_add_neon(
+ int16_t *input,
+ uint8_t *dest,
+ int dest_stride) {
+ uint8x16_t q0u8, q8u8, q9u8, q10u8, q11u8, q12u8, q13u8, q14u8, q15u8;
+ int i, j, dest_stride8;
+ uint8_t *d;
+ int16_t 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);
+
+ dest_stride8 = dest_stride * 8;
+ if (a1 >= 0) { // diff_positive_32_32
+ a1 = a1 < 0 ? 0 : a1 > 255 ? 255 : a1;
+ q0u8 = vdupq_n_u8(a1);
+ for (i = 0; i < 2; i++, dest += 16) { // diff_positive_32_32_loop
+ d = dest;
+ for (j = 0; j < 4; j++) {
+ LD_16x8(d, dest_stride, &q8u8, &q9u8, &q10u8, &q11u8,
+ &q12u8, &q13u8, &q14u8, &q15u8);
+ ADD_DIFF_16x8(q0u8, &q8u8, &q9u8, &q10u8, &q11u8,
+ &q12u8, &q13u8, &q14u8, &q15u8);
+ ST_16x8(d, dest_stride, &q8u8, &q9u8, &q10u8, &q11u8,
+ &q12u8, &q13u8, &q14u8, &q15u8);
+ d += dest_stride8;
+ }
+ }
+ } else { // diff_negative_32_32
+ a1 = -a1;
+ a1 = a1 < 0 ? 0 : a1 > 255 ? 255 : a1;
+ q0u8 = vdupq_n_u8(a1);
+ for (i = 0; i < 2; i++, dest += 16) { // diff_negative_32_32_loop
+ d = dest;
+ for (j = 0; j < 4; j++) {
+ LD_16x8(d, dest_stride, &q8u8, &q9u8, &q10u8, &q11u8,
+ &q12u8, &q13u8, &q14u8, &q15u8);
+ SUB_DIFF_16x8(q0u8, &q8u8, &q9u8, &q10u8, &q11u8,
+ &q12u8, &q13u8, &q14u8, &q15u8);
+ ST_16x8(d, dest_stride, &q8u8, &q9u8, &q10u8, &q11u8,
+ &q12u8, &q13u8, &q14u8, &q15u8);
+ d += dest_stride8;
+ }
+ }
+ }
+ return;
+}

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