1 files changed, 76 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vp9/common/arm/neon/vp9_iht4x4_add_neon.c b/media/libvpx/libvpx/vp9/common/arm/neon/vp9_iht4x4_add_neon.c
new file mode 100644
index 0000000000..4f0a90f215
--- /dev/null
+++ b/media/libvpx/libvpx/vp9/common/arm/neon/vp9_iht4x4_add_neon.c
@@ -0,0 +1,76 @@
+/*
+ *  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 <assert.h>
+
+#include "./vp9_rtcd.h"
+#include "./vpx_config.h"
+#include "vp9/common/vp9_common.h"
+#include "vp9/common/arm/neon/vp9_iht_neon.h"
+#include "vpx_dsp/arm/idct_neon.h"
+#include "vpx_dsp/arm/mem_neon.h"
+#include "vpx_dsp/txfm_common.h"
+
+void vp9_iht4x4_16_add_neon(const tran_low_t *input, uint8_t *dest, int stride,
+                            int tx_type) {
+  int16x8_t a[2];
+  uint8x8_t s[2], d[2];
+  uint16x8_t sum[2];
+
+  assert(!((intptr_t)dest % sizeof(uint32_t)));
+  assert(!(stride % sizeof(uint32_t)));
+
+  a[0] = load_tran_low_to_s16q(input);
+  a[1] = load_tran_low_to_s16q(input + 8);
+  transpose_s16_4x4q(&a[0], &a[1]);
+
+  switch (tx_type) {
+    case DCT_DCT:
+      idct4x4_16_kernel_bd8(a);
+      a[1] = vcombine_s16(vget_high_s16(a[1]), vget_low_s16(a[1]));
+      transpose_s16_4x4q(&a[0], &a[1]);
+      idct4x4_16_kernel_bd8(a);
+      a[1] = vcombine_s16(vget_high_s16(a[1]), vget_low_s16(a[1]));
+      break;
+
+    case ADST_DCT:
+      idct4x4_16_kernel_bd8(a);
+      a[1] = vcombine_s16(vget_high_s16(a[1]), vget_low_s16(a[1]));
+      transpose_s16_4x4q(&a[0], &a[1]);
+      iadst4(a);
+      break;
+
+    case DCT_ADST:
+      iadst4(a);
+      transpose_s16_4x4q(&a[0], &a[1]);
+      idct4x4_16_kernel_bd8(a);
+      a[1] = vcombine_s16(vget_high_s16(a[1]), vget_low_s16(a[1]));
+      break;
+
+    default:
+      assert(tx_type == ADST_ADST);
+      iadst4(a);
+      transpose_s16_4x4q(&a[0], &a[1]);
+      iadst4(a);
+      break;
+  }
+
+  a[0] = vrshrq_n_s16(a[0], 4);
+  a[1] = vrshrq_n_s16(a[1], 4);
+  s[0] = load_u8(dest, stride);
+  s[1] = load_u8(dest + 2 * stride, stride);
+  sum[0] = vaddw_u8(vreinterpretq_u16_s16(a[0]), s[0]);
+  sum[1] = vaddw_u8(vreinterpretq_u16_s16(a[1]), s[1]);
+  d[0] = vqmovun_s16(vreinterpretq_s16_u16(sum[0]));
+  d[1] = vqmovun_s16(vreinterpretq_s16_u16(sum[1]));
+  store_u8(dest, stride, d[0]);
+  store_u8(dest + 2 * stride, stride, d[1]);
+}