1 files changed, 59 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vpx_dsp/arm/idct8x8_add_neon.c b/media/libvpx/libvpx/vpx_dsp/arm/idct8x8_add_neon.c
new file mode 100644
index 0000000000..7471387e47
--- /dev/null
+++ b/media/libvpx/libvpx/vpx_dsp/arm/idct8x8_add_neon.c
@@ -0,0 +1,59 @@
+/*
+ *  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 "./vpx_config.h"
+#include "./vpx_dsp_rtcd.h"
+#include "vpx_dsp/arm/idct_neon.h"
+#include "vpx_dsp/arm/mem_neon.h"
+#include "vpx_dsp/arm/transpose_neon.h"
+#include "vpx_dsp/txfm_common.h"
+
+void vpx_idct8x8_64_add_neon(const tran_low_t *input, uint8_t *dest,
+                             int stride) {
+  const int16x8_t cospis = vld1q_s16(kCospi);
+  const int16x4_t cospis0 = vget_low_s16(cospis);   // cospi 0, 8, 16, 24
+  const int16x4_t cospis1 = vget_high_s16(cospis);  // cospi 4, 12, 20, 28
+  int16x8_t a[8];
+
+  a[0] = load_tran_low_to_s16q(input);
+  a[1] = load_tran_low_to_s16q(input + 8);
+  a[2] = load_tran_low_to_s16q(input + 16);
+  a[3] = load_tran_low_to_s16q(input + 24);
+  a[4] = load_tran_low_to_s16q(input + 32);
+  a[5] = load_tran_low_to_s16q(input + 40);
+  a[6] = load_tran_low_to_s16q(input + 48);
+  a[7] = load_tran_low_to_s16q(input + 56);
+
+  idct8x8_64_1d_bd8(cospis0, cospis1, a);
+  idct8x8_64_1d_bd8(cospis0, cospis1, a);
+  idct8x8_add8x8_neon(a, dest, stride);
+}
+
+void vpx_idct8x8_12_add_neon(const tran_low_t *input, uint8_t *dest,
+                             int stride) {
+  const int16x8_t cospis = vld1q_s16(kCospi);
+  const int16x8_t cospisd = vaddq_s16(cospis, cospis);
+  const int16x4_t cospis0 = vget_low_s16(cospis);     // cospi 0, 8, 16, 24
+  const int16x4_t cospisd0 = vget_low_s16(cospisd);   // doubled 0, 8, 16, 24
+  const int16x4_t cospisd1 = vget_high_s16(cospisd);  // doubled 4, 12, 20, 28
+  int16x4_t a[8];
+  int16x8_t b[8];
+
+  a[0] = load_tran_low_to_s16d(input);
+  a[1] = load_tran_low_to_s16d(input + 8);
+  a[2] = load_tran_low_to_s16d(input + 16);
+  a[3] = load_tran_low_to_s16d(input + 24);
+
+  idct8x8_12_pass1_bd8(cospis0, cospisd0, cospisd1, a);
+  idct8x8_12_pass2_bd8(cospis0, cospisd0, cospisd1, a, b);
+  idct8x8_add8x8_neon(b, dest, stride);
+}