diff options
Diffstat (limited to 'chromium/third_party/libvpx/source/libvpx/vp8/common/arm/neon/dc_only_idct_add_neon.c')
-rw-r--r-- | chromium/third_party/libvpx/source/libvpx/vp8/common/arm/neon/dc_only_idct_add_neon.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/chromium/third_party/libvpx/source/libvpx/vp8/common/arm/neon/dc_only_idct_add_neon.c b/chromium/third_party/libvpx/source/libvpx/vp8/common/arm/neon/dc_only_idct_add_neon.c new file mode 100644 index 00000000000..ad5f41d7dee --- /dev/null +++ b/chromium/third_party/libvpx/source/libvpx/vp8/common/arm/neon/dc_only_idct_add_neon.c @@ -0,0 +1,42 @@ +/* + * 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_dc_only_idct_add_neon( + int16_t input_dc, + unsigned char *pred_ptr, + int pred_stride, + unsigned char *dst_ptr, + int dst_stride) { + int i; + uint16_t a1 = ((input_dc + 4) >> 3); + uint32x2_t d2u32 = vdup_n_u32(0); + uint8x8_t d2u8; + uint16x8_t q1u16; + uint16x8_t qAdd; + + qAdd = vdupq_n_u16(a1); + + for (i = 0; i < 2; i++) { + d2u32 = vld1_lane_u32((const uint32_t *)pred_ptr, d2u32, 0); + pred_ptr += pred_stride; + d2u32 = vld1_lane_u32((const uint32_t *)pred_ptr, d2u32, 1); + pred_ptr += pred_stride; + + q1u16 = vaddw_u8(qAdd, vreinterpret_u8_u32(d2u32)); + d2u8 = vqmovun_s16(vreinterpretq_s16_u16(q1u16)); + + vst1_lane_u32((uint32_t *)dst_ptr, vreinterpret_u32_u8(d2u8), 0); + dst_ptr += dst_stride; + vst1_lane_u32((uint32_t *)dst_ptr, vreinterpret_u32_u8(d2u8), 1); + dst_ptr += dst_stride; + } +} |