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Unified Diff: source/libvpx/vp8/encoder/arm/neon/shortfdct_neon.c

Issue 554673004: libvpx: Pull from upstream (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/deps/third_party/libvpx/
Patch Set: Created 6 years, 3 months ago
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Index: source/libvpx/vp8/encoder/arm/neon/shortfdct_neon.c
===================================================================
--- source/libvpx/vp8/encoder/arm/neon/shortfdct_neon.c (revision 0)
+++ source/libvpx/vp8/encoder/arm/neon/shortfdct_neon.c (revision 0)
@@ -0,0 +1,269 @@
+/*
+ * 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>
+
+void vp8_short_fdct4x4_neon(
+ int16_t *input,
+ int16_t *output,
+ int pitch) {
+ int16x4_t d0s16, d1s16, d2s16, d3s16, d4s16, d5s16, d6s16, d7s16;
+ int16x4_t d16s16, d17s16, d26s16, dEmptys16;
+ uint16x4_t d4u16;
+ int16x8_t q0s16, q1s16;
+ int32x4_t q9s32, q10s32, q11s32, q12s32;
+ int16x4x2_t v2tmp0, v2tmp1;
+ int32x2x2_t v2tmp2, v2tmp3;
+
+ d16s16 = vdup_n_s16(5352);
+ d17s16 = vdup_n_s16(2217);
+ q9s32 = vdupq_n_s32(14500);
+ q10s32 = vdupq_n_s32(7500);
+ q11s32 = vdupq_n_s32(12000);
+ q12s32 = vdupq_n_s32(51000);
+
+ // Part one
+ pitch >>= 1;
+ d0s16 = vld1_s16(input);
+ input += pitch;
+ d1s16 = vld1_s16(input);
+ input += pitch;
+ d2s16 = vld1_s16(input);
+ input += pitch;
+ d3s16 = vld1_s16(input);
+
+ v2tmp2 = vtrn_s32(vreinterpret_s32_s16(d0s16),
+ vreinterpret_s32_s16(d2s16));
+ v2tmp3 = vtrn_s32(vreinterpret_s32_s16(d1s16),
+ vreinterpret_s32_s16(d3s16));
+ v2tmp0 = vtrn_s16(vreinterpret_s16_s32(v2tmp2.val[0]), // d0
+ vreinterpret_s16_s32(v2tmp3.val[0])); // d1
+ v2tmp1 = vtrn_s16(vreinterpret_s16_s32(v2tmp2.val[1]), // d2
+ vreinterpret_s16_s32(v2tmp3.val[1])); // d3
+
+ d4s16 = vadd_s16(v2tmp0.val[0], v2tmp1.val[1]);
+ d5s16 = vadd_s16(v2tmp0.val[1], v2tmp1.val[0]);
+ d6s16 = vsub_s16(v2tmp0.val[1], v2tmp1.val[0]);
+ d7s16 = vsub_s16(v2tmp0.val[0], v2tmp1.val[1]);
+
+ d4s16 = vshl_n_s16(d4s16, 3);
+ d5s16 = vshl_n_s16(d5s16, 3);
+ d6s16 = vshl_n_s16(d6s16, 3);
+ d7s16 = vshl_n_s16(d7s16, 3);
+
+ d0s16 = vadd_s16(d4s16, d5s16);
+ d2s16 = vsub_s16(d4s16, d5s16);
+
+ q9s32 = vmlal_s16(q9s32, d7s16, d16s16);
+ q10s32 = vmlal_s16(q10s32, d7s16, d17s16);
+ q9s32 = vmlal_s16(q9s32, d6s16, d17s16);
+ q10s32 = vmlsl_s16(q10s32, d6s16, d16s16);
+
+ d1s16 = vshrn_n_s32(q9s32, 12);
+ d3s16 = vshrn_n_s32(q10s32, 12);
+
+ // Part two
+ v2tmp2 = vtrn_s32(vreinterpret_s32_s16(d0s16),
+ vreinterpret_s32_s16(d2s16));
+ v2tmp3 = vtrn_s32(vreinterpret_s32_s16(d1s16),
+ vreinterpret_s32_s16(d3s16));
+ v2tmp0 = vtrn_s16(vreinterpret_s16_s32(v2tmp2.val[0]), // d0
+ vreinterpret_s16_s32(v2tmp3.val[0])); // d1
+ v2tmp1 = vtrn_s16(vreinterpret_s16_s32(v2tmp2.val[1]), // d2
+ vreinterpret_s16_s32(v2tmp3.val[1])); // d3
+
+ d4s16 = vadd_s16(v2tmp0.val[0], v2tmp1.val[1]);
+ d5s16 = vadd_s16(v2tmp0.val[1], v2tmp1.val[0]);
+ d6s16 = vsub_s16(v2tmp0.val[1], v2tmp1.val[0]);
+ d7s16 = vsub_s16(v2tmp0.val[0], v2tmp1.val[1]);
+
+ d26s16 = vdup_n_s16(7);
+ d4s16 = vadd_s16(d4s16, d26s16);
+
+ d0s16 = vadd_s16(d4s16, d5s16);
+ d2s16 = vsub_s16(d4s16, d5s16);
+
+ q11s32 = vmlal_s16(q11s32, d7s16, d16s16);
+ q12s32 = vmlal_s16(q12s32, d7s16, d17s16);
+
+ dEmptys16 = vdup_n_s16(0);
+ d4u16 = vceq_s16(d7s16, dEmptys16);
+
+ d0s16 = vshr_n_s16(d0s16, 4);
+ d2s16 = vshr_n_s16(d2s16, 4);
+
+ q11s32 = vmlal_s16(q11s32, d6s16, d17s16);
+ q12s32 = vmlsl_s16(q12s32, d6s16, d16s16);
+
+ d4u16 = vmvn_u16(d4u16);
+ d1s16 = vshrn_n_s32(q11s32, 16);
+ d1s16 = vsub_s16(d1s16, vreinterpret_s16_u16(d4u16));
+ d3s16 = vshrn_n_s32(q12s32, 16);
+
+ q0s16 = vcombine_s16(d0s16, d1s16);
+ q1s16 = vcombine_s16(d2s16, d3s16);
+
+ vst1q_s16(output, q0s16);
+ vst1q_s16(output + 8, q1s16);
+ return;
+}
+
+void vp8_short_fdct8x4_neon(
+ int16_t *input,
+ int16_t *output,
+ int pitch) {
+ int16x4_t d0s16, d1s16, d2s16, d3s16, d4s16, d5s16, d6s16, d7s16;
+ int16x4_t d16s16, d17s16, d26s16, d27s16, d28s16, d29s16;
+ uint16x4_t d28u16, d29u16;
+ uint16x8_t q14u16;
+ int16x8_t q0s16, q1s16, q2s16, q3s16;
+ int16x8_t q11s16, q12s16, q13s16, q14s16, q15s16, qEmptys16;
+ int32x4_t q9s32, q10s32, q11s32, q12s32;
+ int16x8x2_t v2tmp0, v2tmp1;
+ int32x4x2_t v2tmp2, v2tmp3;
+
+ d16s16 = vdup_n_s16(5352);
+ d17s16 = vdup_n_s16(2217);
+ q9s32 = vdupq_n_s32(14500);
+ q10s32 = vdupq_n_s32(7500);
+
+ // Part one
+ pitch >>= 1;
+ q0s16 = vld1q_s16(input);
+ input += pitch;
+ q1s16 = vld1q_s16(input);
+ input += pitch;
+ q2s16 = vld1q_s16(input);
+ input += pitch;
+ q3s16 = vld1q_s16(input);
+
+ v2tmp2 = vtrnq_s32(vreinterpretq_s32_s16(q0s16),
+ vreinterpretq_s32_s16(q2s16));
+ v2tmp3 = vtrnq_s32(vreinterpretq_s32_s16(q1s16),
+ vreinterpretq_s32_s16(q3s16));
+ v2tmp0 = vtrnq_s16(vreinterpretq_s16_s32(v2tmp2.val[0]), // q0
+ vreinterpretq_s16_s32(v2tmp3.val[0])); // q1
+ v2tmp1 = vtrnq_s16(vreinterpretq_s16_s32(v2tmp2.val[1]), // q2
+ vreinterpretq_s16_s32(v2tmp3.val[1])); // q3
+
+ q11s16 = vaddq_s16(v2tmp0.val[0], v2tmp1.val[1]);
+ q12s16 = vaddq_s16(v2tmp0.val[1], v2tmp1.val[0]);
+ q13s16 = vsubq_s16(v2tmp0.val[1], v2tmp1.val[0]);
+ q14s16 = vsubq_s16(v2tmp0.val[0], v2tmp1.val[1]);
+
+ q11s16 = vshlq_n_s16(q11s16, 3);
+ q12s16 = vshlq_n_s16(q12s16, 3);
+ q13s16 = vshlq_n_s16(q13s16, 3);
+ q14s16 = vshlq_n_s16(q14s16, 3);
+
+ q0s16 = vaddq_s16(q11s16, q12s16);
+ q2s16 = vsubq_s16(q11s16, q12s16);
+
+ q11s32 = q9s32;
+ q12s32 = q10s32;
+
+ d26s16 = vget_low_s16(q13s16);
+ d27s16 = vget_high_s16(q13s16);
+ d28s16 = vget_low_s16(q14s16);
+ d29s16 = vget_high_s16(q14s16);
+
+ q9s32 = vmlal_s16(q9s32, d28s16, d16s16);
+ q10s32 = vmlal_s16(q10s32, d28s16, d17s16);
+ q11s32 = vmlal_s16(q11s32, d29s16, d16s16);
+ q12s32 = vmlal_s16(q12s32, d29s16, d17s16);
+
+ q9s32 = vmlal_s16(q9s32, d26s16, d17s16);
+ q10s32 = vmlsl_s16(q10s32, d26s16, d16s16);
+ q11s32 = vmlal_s16(q11s32, d27s16, d17s16);
+ q12s32 = vmlsl_s16(q12s32, d27s16, d16s16);
+
+ d2s16 = vshrn_n_s32(q9s32, 12);
+ d6s16 = vshrn_n_s32(q10s32, 12);
+ d3s16 = vshrn_n_s32(q11s32, 12);
+ d7s16 = vshrn_n_s32(q12s32, 12);
+ q1s16 = vcombine_s16(d2s16, d3s16);
+ q3s16 = vcombine_s16(d6s16, d7s16);
+
+ // Part two
+ q9s32 = vdupq_n_s32(12000);
+ q10s32 = vdupq_n_s32(51000);
+
+ v2tmp2 = vtrnq_s32(vreinterpretq_s32_s16(q0s16),
+ vreinterpretq_s32_s16(q2s16));
+ v2tmp3 = vtrnq_s32(vreinterpretq_s32_s16(q1s16),
+ vreinterpretq_s32_s16(q3s16));
+ v2tmp0 = vtrnq_s16(vreinterpretq_s16_s32(v2tmp2.val[0]), // q0
+ vreinterpretq_s16_s32(v2tmp3.val[0])); // q1
+ v2tmp1 = vtrnq_s16(vreinterpretq_s16_s32(v2tmp2.val[1]), // q2
+ vreinterpretq_s16_s32(v2tmp3.val[1])); // q3
+
+ q11s16 = vaddq_s16(v2tmp0.val[0], v2tmp1.val[1]);
+ q12s16 = vaddq_s16(v2tmp0.val[1], v2tmp1.val[0]);
+ q13s16 = vsubq_s16(v2tmp0.val[1], v2tmp1.val[0]);
+ q14s16 = vsubq_s16(v2tmp0.val[0], v2tmp1.val[1]);
+
+ q15s16 = vdupq_n_s16(7);
+ q11s16 = vaddq_s16(q11s16, q15s16);
+ q0s16 = vaddq_s16(q11s16, q12s16);
+ q1s16 = vsubq_s16(q11s16, q12s16);
+
+ q11s32 = q9s32;
+ q12s32 = q10s32;
+
+ d0s16 = vget_low_s16(q0s16);
+ d1s16 = vget_high_s16(q0s16);
+ d2s16 = vget_low_s16(q1s16);
+ d3s16 = vget_high_s16(q1s16);
+
+ d0s16 = vshr_n_s16(d0s16, 4);
+ d4s16 = vshr_n_s16(d1s16, 4);
+ d2s16 = vshr_n_s16(d2s16, 4);
+ d6s16 = vshr_n_s16(d3s16, 4);
+
+ d26s16 = vget_low_s16(q13s16);
+ d27s16 = vget_high_s16(q13s16);
+ d28s16 = vget_low_s16(q14s16);
+ d29s16 = vget_high_s16(q14s16);
+
+ q9s32 = vmlal_s16(q9s32, d28s16, d16s16);
+ q10s32 = vmlal_s16(q10s32, d28s16, d17s16);
+ q11s32 = vmlal_s16(q11s32, d29s16, d16s16);
+ q12s32 = vmlal_s16(q12s32, d29s16, d17s16);
+
+ q9s32 = vmlal_s16(q9s32, d26s16, d17s16);
+ q10s32 = vmlsl_s16(q10s32, d26s16, d16s16);
+ q11s32 = vmlal_s16(q11s32, d27s16, d17s16);
+ q12s32 = vmlsl_s16(q12s32, d27s16, d16s16);
+
+ d1s16 = vshrn_n_s32(q9s32, 16);
+ d3s16 = vshrn_n_s32(q10s32, 16);
+ d5s16 = vshrn_n_s32(q11s32, 16);
+ d7s16 = vshrn_n_s32(q12s32, 16);
+
+ qEmptys16 = vdupq_n_s16(0);
+ q14u16 = vceqq_s16(q14s16, qEmptys16);
+ q14u16 = vmvnq_u16(q14u16);
+
+ d28u16 = vget_low_u16(q14u16);
+ d29u16 = vget_high_u16(q14u16);
+ d1s16 = vsub_s16(d1s16, vreinterpret_s16_u16(d28u16));
+ d5s16 = vsub_s16(d5s16, vreinterpret_s16_u16(d29u16));
+
+ q0s16 = vcombine_s16(d0s16, d1s16);
+ q1s16 = vcombine_s16(d2s16, d3s16);
+ q2s16 = vcombine_s16(d4s16, d5s16);
+ q3s16 = vcombine_s16(d6s16, d7s16);
+
+ vst1q_s16(output, q0s16);
+ vst1q_s16(output + 8, q1s16);
+ vst1q_s16(output + 16, q2s16);
+ vst1q_s16(output + 24, q3s16);
+ return;
+}
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