diff options
Diffstat (limited to 'media/libvpx/vp9/common/arm/neon/vp9_idct4x4_1_add_neon.c')
-rw-r--r-- | media/libvpx/vp9/common/arm/neon/vp9_idct4x4_1_add_neon.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/media/libvpx/vp9/common/arm/neon/vp9_idct4x4_1_add_neon.c b/media/libvpx/vp9/common/arm/neon/vp9_idct4x4_1_add_neon.c new file mode 100644 index 000000000..f0457358e --- /dev/null +++ b/media/libvpx/vp9/common/arm/neon/vp9_idct4x4_1_add_neon.c @@ -0,0 +1,50 @@ +/* + * 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_ports/mem.h" +#include "vp9/common/vp9_idct.h" + +void vp9_idct4x4_1_add_neon( + int16_t *input, + uint8_t *dest, + int dest_stride) { + uint8x8_t d6u8; + uint32x2_t d2u32 = vdup_n_u32(0); + uint16x8_t q8u16; + int16x8_t q0s16; + uint8_t *d1, *d2; + int16_t i, a1, cospi_16_64 = 11585; + int16_t out = dct_const_round_shift(input[0] * cospi_16_64); + out = dct_const_round_shift(out * cospi_16_64); + a1 = ROUND_POWER_OF_TWO(out, 4); + + q0s16 = vdupq_n_s16(a1); + + // dc_only_idct_add + d1 = d2 = dest; + for (i = 0; i < 2; i++) { + d2u32 = vld1_lane_u32((const uint32_t *)d1, d2u32, 0); + d1 += dest_stride; + d2u32 = vld1_lane_u32((const uint32_t *)d1, d2u32, 1); + d1 += dest_stride; + + q8u16 = vaddw_u8(vreinterpretq_u16_s16(q0s16), + vreinterpret_u8_u32(d2u32)); + d6u8 = vqmovun_s16(vreinterpretq_s16_u16(q8u16)); + + vst1_lane_u32((uint32_t *)d2, vreinterpret_u32_u8(d6u8), 0); + d2 += dest_stride; + vst1_lane_u32((uint32_t *)d2, vreinterpret_u32_u8(d6u8), 1); + d2 += dest_stride; + } + return; +} |