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-rw-r--r--media/libyuv/libyuv/source/rotate_neon.cc418
1 files changed, 418 insertions, 0 deletions
diff --git a/media/libyuv/libyuv/source/rotate_neon.cc b/media/libyuv/libyuv/source/rotate_neon.cc
new file mode 100644
index 0000000000..844df2bf30
--- /dev/null
+++ b/media/libyuv/libyuv/source/rotate_neon.cc
@@ -0,0 +1,418 @@
+/*
+ * Copyright 2011 The LibYuv 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 "libyuv/rotate_row.h"
+#include "libyuv/row.h"
+
+#include "libyuv/basic_types.h"
+
+#ifdef __cplusplus
+namespace libyuv {
+extern "C" {
+#endif
+
+#if !defined(LIBYUV_DISABLE_NEON) && defined(__ARM_NEON__) && \
+ !defined(__aarch64__)
+
+static const uvec8 kVTbl4x4Transpose = {0, 4, 8, 12, 1, 5, 9, 13,
+ 2, 6, 10, 14, 3, 7, 11, 15};
+
+void TransposeWx8_NEON(const uint8_t* src,
+ int src_stride,
+ uint8_t* dst,
+ int dst_stride,
+ int width) {
+ const uint8_t* src_temp;
+ asm volatile(
+ // loops are on blocks of 8. loop will stop when
+ // counter gets to or below 0. starting the counter
+ // at w-8 allow for this
+ "sub %5, #8 \n"
+
+ // handle 8x8 blocks. this should be the majority of the plane
+ "1: \n"
+ "mov %0, %1 \n"
+
+ "vld1.8 {d0}, [%0], %2 \n"
+ "vld1.8 {d1}, [%0], %2 \n"
+ "vld1.8 {d2}, [%0], %2 \n"
+ "vld1.8 {d3}, [%0], %2 \n"
+ "vld1.8 {d4}, [%0], %2 \n"
+ "vld1.8 {d5}, [%0], %2 \n"
+ "vld1.8 {d6}, [%0], %2 \n"
+ "vld1.8 {d7}, [%0] \n"
+
+ "vtrn.8 d1, d0 \n"
+ "vtrn.8 d3, d2 \n"
+ "vtrn.8 d5, d4 \n"
+ "vtrn.8 d7, d6 \n"
+
+ "vtrn.16 d1, d3 \n"
+ "vtrn.16 d0, d2 \n"
+ "vtrn.16 d5, d7 \n"
+ "vtrn.16 d4, d6 \n"
+
+ "vtrn.32 d1, d5 \n"
+ "vtrn.32 d0, d4 \n"
+ "vtrn.32 d3, d7 \n"
+ "vtrn.32 d2, d6 \n"
+
+ "vrev16.8 q0, q0 \n"
+ "vrev16.8 q1, q1 \n"
+ "vrev16.8 q2, q2 \n"
+ "vrev16.8 q3, q3 \n"
+
+ "mov %0, %3 \n"
+
+ "vst1.8 {d1}, [%0], %4 \n"
+ "vst1.8 {d0}, [%0], %4 \n"
+ "vst1.8 {d3}, [%0], %4 \n"
+ "vst1.8 {d2}, [%0], %4 \n"
+ "vst1.8 {d5}, [%0], %4 \n"
+ "vst1.8 {d4}, [%0], %4 \n"
+ "vst1.8 {d7}, [%0], %4 \n"
+ "vst1.8 {d6}, [%0] \n"
+
+ "add %1, #8 \n" // src += 8
+ "add %3, %3, %4, lsl #3 \n" // dst += 8 * dst_stride
+ "subs %5, #8 \n" // w -= 8
+ "bge 1b \n"
+
+ // add 8 back to counter. if the result is 0 there are
+ // no residuals.
+ "adds %5, #8 \n"
+ "beq 4f \n"
+
+ // some residual, so between 1 and 7 lines left to transpose
+ "cmp %5, #2 \n"
+ "blt 3f \n"
+
+ "cmp %5, #4 \n"
+ "blt 2f \n"
+
+ // 4x8 block
+ "mov %0, %1 \n"
+ "vld1.32 {d0[0]}, [%0], %2 \n"
+ "vld1.32 {d0[1]}, [%0], %2 \n"
+ "vld1.32 {d1[0]}, [%0], %2 \n"
+ "vld1.32 {d1[1]}, [%0], %2 \n"
+ "vld1.32 {d2[0]}, [%0], %2 \n"
+ "vld1.32 {d2[1]}, [%0], %2 \n"
+ "vld1.32 {d3[0]}, [%0], %2 \n"
+ "vld1.32 {d3[1]}, [%0] \n"
+
+ "mov %0, %3 \n"
+
+ "vld1.8 {q3}, [%6] \n"
+
+ "vtbl.8 d4, {d0, d1}, d6 \n"
+ "vtbl.8 d5, {d0, d1}, d7 \n"
+ "vtbl.8 d0, {d2, d3}, d6 \n"
+ "vtbl.8 d1, {d2, d3}, d7 \n"
+
+ // TODO(frkoenig): Rework shuffle above to
+ // write out with 4 instead of 8 writes.
+ "vst1.32 {d4[0]}, [%0], %4 \n"
+ "vst1.32 {d4[1]}, [%0], %4 \n"
+ "vst1.32 {d5[0]}, [%0], %4 \n"
+ "vst1.32 {d5[1]}, [%0] \n"
+
+ "add %0, %3, #4 \n"
+ "vst1.32 {d0[0]}, [%0], %4 \n"
+ "vst1.32 {d0[1]}, [%0], %4 \n"
+ "vst1.32 {d1[0]}, [%0], %4 \n"
+ "vst1.32 {d1[1]}, [%0] \n"
+
+ "add %1, #4 \n" // src += 4
+ "add %3, %3, %4, lsl #2 \n" // dst += 4 * dst_stride
+ "subs %5, #4 \n" // w -= 4
+ "beq 4f \n"
+
+ // some residual, check to see if it includes a 2x8 block,
+ // or less
+ "cmp %5, #2 \n"
+ "blt 3f \n"
+
+ // 2x8 block
+ "2: \n"
+ "mov %0, %1 \n"
+ "vld1.16 {d0[0]}, [%0], %2 \n"
+ "vld1.16 {d1[0]}, [%0], %2 \n"
+ "vld1.16 {d0[1]}, [%0], %2 \n"
+ "vld1.16 {d1[1]}, [%0], %2 \n"
+ "vld1.16 {d0[2]}, [%0], %2 \n"
+ "vld1.16 {d1[2]}, [%0], %2 \n"
+ "vld1.16 {d0[3]}, [%0], %2 \n"
+ "vld1.16 {d1[3]}, [%0] \n"
+
+ "vtrn.8 d0, d1 \n"
+
+ "mov %0, %3 \n"
+
+ "vst1.64 {d0}, [%0], %4 \n"
+ "vst1.64 {d1}, [%0] \n"
+
+ "add %1, #2 \n" // src += 2
+ "add %3, %3, %4, lsl #1 \n" // dst += 2 * dst_stride
+ "subs %5, #2 \n" // w -= 2
+ "beq 4f \n"
+
+ // 1x8 block
+ "3: \n"
+ "vld1.8 {d0[0]}, [%1], %2 \n"
+ "vld1.8 {d0[1]}, [%1], %2 \n"
+ "vld1.8 {d0[2]}, [%1], %2 \n"
+ "vld1.8 {d0[3]}, [%1], %2 \n"
+ "vld1.8 {d0[4]}, [%1], %2 \n"
+ "vld1.8 {d0[5]}, [%1], %2 \n"
+ "vld1.8 {d0[6]}, [%1], %2 \n"
+ "vld1.8 {d0[7]}, [%1] \n"
+
+ "vst1.64 {d0}, [%3] \n"
+
+ "4: \n"
+
+ : "=&r"(src_temp), // %0
+ "+r"(src), // %1
+ "+r"(src_stride), // %2
+ "+r"(dst), // %3
+ "+r"(dst_stride), // %4
+ "+r"(width) // %5
+ : "r"(&kVTbl4x4Transpose) // %6
+ : "memory", "cc", "q0", "q1", "q2", "q3");
+}
+
+static const uvec8 kVTbl4x4TransposeDi = {0, 8, 1, 9, 2, 10, 3, 11,
+ 4, 12, 5, 13, 6, 14, 7, 15};
+
+void TransposeUVWx8_NEON(const uint8_t* src,
+ int src_stride,
+ uint8_t* dst_a,
+ int dst_stride_a,
+ uint8_t* dst_b,
+ int dst_stride_b,
+ int width) {
+ const uint8_t* src_temp;
+ asm volatile(
+ // loops are on blocks of 8. loop will stop when
+ // counter gets to or below 0. starting the counter
+ // at w-8 allow for this
+ "sub %7, #8 \n"
+
+ // handle 8x8 blocks. this should be the majority of the plane
+ "1: \n"
+ "mov %0, %1 \n"
+
+ "vld2.8 {d0, d1}, [%0], %2 \n"
+ "vld2.8 {d2, d3}, [%0], %2 \n"
+ "vld2.8 {d4, d5}, [%0], %2 \n"
+ "vld2.8 {d6, d7}, [%0], %2 \n"
+ "vld2.8 {d16, d17}, [%0], %2 \n"
+ "vld2.8 {d18, d19}, [%0], %2 \n"
+ "vld2.8 {d20, d21}, [%0], %2 \n"
+ "vld2.8 {d22, d23}, [%0] \n"
+
+ "vtrn.8 q1, q0 \n"
+ "vtrn.8 q3, q2 \n"
+ "vtrn.8 q9, q8 \n"
+ "vtrn.8 q11, q10 \n"
+
+ "vtrn.16 q1, q3 \n"
+ "vtrn.16 q0, q2 \n"
+ "vtrn.16 q9, q11 \n"
+ "vtrn.16 q8, q10 \n"
+
+ "vtrn.32 q1, q9 \n"
+ "vtrn.32 q0, q8 \n"
+ "vtrn.32 q3, q11 \n"
+ "vtrn.32 q2, q10 \n"
+
+ "vrev16.8 q0, q0 \n"
+ "vrev16.8 q1, q1 \n"
+ "vrev16.8 q2, q2 \n"
+ "vrev16.8 q3, q3 \n"
+ "vrev16.8 q8, q8 \n"
+ "vrev16.8 q9, q9 \n"
+ "vrev16.8 q10, q10 \n"
+ "vrev16.8 q11, q11 \n"
+
+ "mov %0, %3 \n"
+
+ "vst1.8 {d2}, [%0], %4 \n"
+ "vst1.8 {d0}, [%0], %4 \n"
+ "vst1.8 {d6}, [%0], %4 \n"
+ "vst1.8 {d4}, [%0], %4 \n"
+ "vst1.8 {d18}, [%0], %4 \n"
+ "vst1.8 {d16}, [%0], %4 \n"
+ "vst1.8 {d22}, [%0], %4 \n"
+ "vst1.8 {d20}, [%0] \n"
+
+ "mov %0, %5 \n"
+
+ "vst1.8 {d3}, [%0], %6 \n"
+ "vst1.8 {d1}, [%0], %6 \n"
+ "vst1.8 {d7}, [%0], %6 \n"
+ "vst1.8 {d5}, [%0], %6 \n"
+ "vst1.8 {d19}, [%0], %6 \n"
+ "vst1.8 {d17}, [%0], %6 \n"
+ "vst1.8 {d23}, [%0], %6 \n"
+ "vst1.8 {d21}, [%0] \n"
+
+ "add %1, #8*2 \n" // src += 8*2
+ "add %3, %3, %4, lsl #3 \n" // dst_a += 8 *
+ // dst_stride_a
+ "add %5, %5, %6, lsl #3 \n" // dst_b += 8 *
+ // dst_stride_b
+ "subs %7, #8 \n" // w -= 8
+ "bge 1b \n"
+
+ // add 8 back to counter. if the result is 0 there are
+ // no residuals.
+ "adds %7, #8 \n"
+ "beq 4f \n"
+
+ // some residual, so between 1 and 7 lines left to transpose
+ "cmp %7, #2 \n"
+ "blt 3f \n"
+
+ "cmp %7, #4 \n"
+ "blt 2f \n"
+
+ // TODO(frkoenig): Clean this up
+ // 4x8 block
+ "mov %0, %1 \n"
+ "vld1.64 {d0}, [%0], %2 \n"
+ "vld1.64 {d1}, [%0], %2 \n"
+ "vld1.64 {d2}, [%0], %2 \n"
+ "vld1.64 {d3}, [%0], %2 \n"
+ "vld1.64 {d4}, [%0], %2 \n"
+ "vld1.64 {d5}, [%0], %2 \n"
+ "vld1.64 {d6}, [%0], %2 \n"
+ "vld1.64 {d7}, [%0] \n"
+
+ "vld1.8 {q15}, [%8] \n"
+
+ "vtrn.8 q0, q1 \n"
+ "vtrn.8 q2, q3 \n"
+
+ "vtbl.8 d16, {d0, d1}, d30 \n"
+ "vtbl.8 d17, {d0, d1}, d31 \n"
+ "vtbl.8 d18, {d2, d3}, d30 \n"
+ "vtbl.8 d19, {d2, d3}, d31 \n"
+ "vtbl.8 d20, {d4, d5}, d30 \n"
+ "vtbl.8 d21, {d4, d5}, d31 \n"
+ "vtbl.8 d22, {d6, d7}, d30 \n"
+ "vtbl.8 d23, {d6, d7}, d31 \n"
+
+ "mov %0, %3 \n"
+
+ "vst1.32 {d16[0]}, [%0], %4 \n"
+ "vst1.32 {d16[1]}, [%0], %4 \n"
+ "vst1.32 {d17[0]}, [%0], %4 \n"
+ "vst1.32 {d17[1]}, [%0], %4 \n"
+
+ "add %0, %3, #4 \n"
+ "vst1.32 {d20[0]}, [%0], %4 \n"
+ "vst1.32 {d20[1]}, [%0], %4 \n"
+ "vst1.32 {d21[0]}, [%0], %4 \n"
+ "vst1.32 {d21[1]}, [%0] \n"
+
+ "mov %0, %5 \n"
+
+ "vst1.32 {d18[0]}, [%0], %6 \n"
+ "vst1.32 {d18[1]}, [%0], %6 \n"
+ "vst1.32 {d19[0]}, [%0], %6 \n"
+ "vst1.32 {d19[1]}, [%0], %6 \n"
+
+ "add %0, %5, #4 \n"
+ "vst1.32 {d22[0]}, [%0], %6 \n"
+ "vst1.32 {d22[1]}, [%0], %6 \n"
+ "vst1.32 {d23[0]}, [%0], %6 \n"
+ "vst1.32 {d23[1]}, [%0] \n"
+
+ "add %1, #4*2 \n" // src += 4 * 2
+ "add %3, %3, %4, lsl #2 \n" // dst_a += 4 *
+ // dst_stride_a
+ "add %5, %5, %6, lsl #2 \n" // dst_b += 4 *
+ // dst_stride_b
+ "subs %7, #4 \n" // w -= 4
+ "beq 4f \n"
+
+ // some residual, check to see if it includes a 2x8 block,
+ // or less
+ "cmp %7, #2 \n"
+ "blt 3f \n"
+
+ // 2x8 block
+ "2: \n"
+ "mov %0, %1 \n"
+ "vld2.16 {d0[0], d2[0]}, [%0], %2 \n"
+ "vld2.16 {d1[0], d3[0]}, [%0], %2 \n"
+ "vld2.16 {d0[1], d2[1]}, [%0], %2 \n"
+ "vld2.16 {d1[1], d3[1]}, [%0], %2 \n"
+ "vld2.16 {d0[2], d2[2]}, [%0], %2 \n"
+ "vld2.16 {d1[2], d3[2]}, [%0], %2 \n"
+ "vld2.16 {d0[3], d2[3]}, [%0], %2 \n"
+ "vld2.16 {d1[3], d3[3]}, [%0] \n"
+
+ "vtrn.8 d0, d1 \n"
+ "vtrn.8 d2, d3 \n"
+
+ "mov %0, %3 \n"
+
+ "vst1.64 {d0}, [%0], %4 \n"
+ "vst1.64 {d2}, [%0] \n"
+
+ "mov %0, %5 \n"
+
+ "vst1.64 {d1}, [%0], %6 \n"
+ "vst1.64 {d3}, [%0] \n"
+
+ "add %1, #2*2 \n" // src += 2 * 2
+ "add %3, %3, %4, lsl #1 \n" // dst_a += 2 *
+ // dst_stride_a
+ "add %5, %5, %6, lsl #1 \n" // dst_b += 2 *
+ // dst_stride_b
+ "subs %7, #2 \n" // w -= 2
+ "beq 4f \n"
+
+ // 1x8 block
+ "3: \n"
+ "vld2.8 {d0[0], d1[0]}, [%1], %2 \n"
+ "vld2.8 {d0[1], d1[1]}, [%1], %2 \n"
+ "vld2.8 {d0[2], d1[2]}, [%1], %2 \n"
+ "vld2.8 {d0[3], d1[3]}, [%1], %2 \n"
+ "vld2.8 {d0[4], d1[4]}, [%1], %2 \n"
+ "vld2.8 {d0[5], d1[5]}, [%1], %2 \n"
+ "vld2.8 {d0[6], d1[6]}, [%1], %2 \n"
+ "vld2.8 {d0[7], d1[7]}, [%1] \n"
+
+ "vst1.64 {d0}, [%3] \n"
+ "vst1.64 {d1}, [%5] \n"
+
+ "4: \n"
+
+ : "=&r"(src_temp), // %0
+ "+r"(src), // %1
+ "+r"(src_stride), // %2
+ "+r"(dst_a), // %3
+ "+r"(dst_stride_a), // %4
+ "+r"(dst_b), // %5
+ "+r"(dst_stride_b), // %6
+ "+r"(width) // %7
+ : "r"(&kVTbl4x4TransposeDi) // %8
+ : "memory", "cc", "q0", "q1", "q2", "q3", "q8", "q9", "q10", "q11");
+}
+#endif // defined(__ARM_NEON__) && !defined(__aarch64__)
+
+#ifdef __cplusplus
+} // extern "C"
+} // namespace libyuv
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-19 22:46:52 +0000