1 files changed, 88 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vpx_dsp/arm/highbd_idct32x32_add_neon.c b/media/libvpx/libvpx/vpx_dsp/arm/highbd_idct32x32_add_neon.c
new file mode 100644
index 0000000000..c1354c0c1a
--- /dev/null
+++ b/media/libvpx/libvpx/vpx_dsp/arm/highbd_idct32x32_add_neon.c
@@ -0,0 +1,88 @@
+/*
+ *  Copyright (c) 2017 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_dsp_rtcd.h"
+#include "vpx_dsp/arm/idct_neon.h"
+#include "vpx_dsp/inv_txfm.h"
+
+static INLINE void highbd_idct32x32_1_add_pos_kernel(uint16_t **dest,
+                                                     const int stride,
+                                                     const int16x8_t res,
+                                                     const int16x8_t max) {
+  const uint16x8_t a0 = vld1q_u16(*dest);
+  const uint16x8_t a1 = vld1q_u16(*dest + 8);
+  const uint16x8_t a2 = vld1q_u16(*dest + 16);
+  const uint16x8_t a3 = vld1q_u16(*dest + 24);
+  const int16x8_t b0 = vaddq_s16(res, vreinterpretq_s16_u16(a0));
+  const int16x8_t b1 = vaddq_s16(res, vreinterpretq_s16_u16(a1));
+  const int16x8_t b2 = vaddq_s16(res, vreinterpretq_s16_u16(a2));
+  const int16x8_t b3 = vaddq_s16(res, vreinterpretq_s16_u16(a3));
+  const int16x8_t c0 = vminq_s16(b0, max);
+  const int16x8_t c1 = vminq_s16(b1, max);
+  const int16x8_t c2 = vminq_s16(b2, max);
+  const int16x8_t c3 = vminq_s16(b3, max);
+  vst1q_u16(*dest, vreinterpretq_u16_s16(c0));
+  vst1q_u16(*dest + 8, vreinterpretq_u16_s16(c1));
+  vst1q_u16(*dest + 16, vreinterpretq_u16_s16(c2));
+  vst1q_u16(*dest + 24, vreinterpretq_u16_s16(c3));
+  *dest += stride;
+}
+
+static INLINE void highbd_idct32x32_1_add_neg_kernel(uint16_t **dest,
+                                                     const int stride,
+                                                     const int16x8_t res) {
+  const uint16x8_t a0 = vld1q_u16(*dest);
+  const uint16x8_t a1 = vld1q_u16(*dest + 8);
+  const uint16x8_t a2 = vld1q_u16(*dest + 16);
+  const uint16x8_t a3 = vld1q_u16(*dest + 24);
+  const int16x8_t b0 = vaddq_s16(res, vreinterpretq_s16_u16(a0));
+  const int16x8_t b1 = vaddq_s16(res, vreinterpretq_s16_u16(a1));
+  const int16x8_t b2 = vaddq_s16(res, vreinterpretq_s16_u16(a2));
+  const int16x8_t b3 = vaddq_s16(res, vreinterpretq_s16_u16(a3));
+  const uint16x8_t c0 = vqshluq_n_s16(b0, 0);
+  const uint16x8_t c1 = vqshluq_n_s16(b1, 0);
+  const uint16x8_t c2 = vqshluq_n_s16(b2, 0);
+  const uint16x8_t c3 = vqshluq_n_s16(b3, 0);
+  vst1q_u16(*dest, c0);
+  vst1q_u16(*dest + 8, c1);
+  vst1q_u16(*dest + 16, c2);
+  vst1q_u16(*dest + 24, c3);
+  *dest += stride;
+}
+
+void vpx_highbd_idct32x32_1_add_neon(const tran_low_t *input, uint16_t *dest,
+                                     int stride, int bd) {
+  const tran_low_t out0 = HIGHBD_WRAPLOW(
+      dct_const_round_shift(input[0] * (tran_high_t)cospi_16_64), bd);
+  const tran_low_t out1 = HIGHBD_WRAPLOW(
+      dct_const_round_shift(out0 * (tran_high_t)cospi_16_64), bd);
+  const int16_t a1 = ROUND_POWER_OF_TWO(out1, 6);
+  const int16x8_t dc = vdupq_n_s16(a1);
+  int i;
+
+  if (a1 >= 0) {
+    const int16x8_t max = vdupq_n_s16((1 << bd) - 1);
+    for (i = 0; i < 8; ++i) {
+      highbd_idct32x32_1_add_pos_kernel(&dest, stride, dc, max);
+      highbd_idct32x32_1_add_pos_kernel(&dest, stride, dc, max);
+      highbd_idct32x32_1_add_pos_kernel(&dest, stride, dc, max);
+      highbd_idct32x32_1_add_pos_kernel(&dest, stride, dc, max);
+    }
+  } else {
+    for (i = 0; i < 8; ++i) {
+      highbd_idct32x32_1_add_neg_kernel(&dest, stride, dc);
+      highbd_idct32x32_1_add_neg_kernel(&dest, stride, dc);
+      highbd_idct32x32_1_add_neg_kernel(&dest, stride, dc);
+      highbd_idct32x32_1_add_neg_kernel(&dest, stride, dc);
+    }
+  }
+}