diff options
Diffstat (limited to 'media/libvpx/libvpx/vp8/encoder/arm/neon/vp8_shortwalsh4x4_neon.c')
| -rw-r--r-- | media/libvpx/libvpx/vp8/encoder/arm/neon/vp8_shortwalsh4x4_neon.c | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vp8/encoder/arm/neon/vp8_shortwalsh4x4_neon.c b/media/libvpx/libvpx/vp8/encoder/arm/neon/vp8_shortwalsh4x4_neon.c new file mode 100644 index 0000000000..02056f2f90 --- /dev/null +++ b/media/libvpx/libvpx/vp8/encoder/arm/neon/vp8_shortwalsh4x4_neon.c @@ -0,0 +1,121 @@ +/* + * 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 "./vp8_rtcd.h" +#include "vpx_ports/arm.h" + +#ifdef VPX_INCOMPATIBLE_GCC +#include "./vp8_rtcd.h" +void vp8_short_walsh4x4_neon(int16_t *input, int16_t *output, int pitch) { + vp8_short_walsh4x4_c(input, output, pitch); +} +#else +void vp8_short_walsh4x4_neon(int16_t *input, int16_t *output, int pitch) { + uint16x4_t d16u16; + int16x8_t q0s16, q1s16; + int16x4_t dEmptys16, d0s16, d1s16, d2s16, d3s16, d4s16, d5s16, d6s16, d7s16; + int32x4_t qEmptys32, q0s32, q1s32, q2s32, q3s32, q8s32; + int32x4_t q9s32, q10s32, q11s32, q15s32; + uint32x4_t q8u32, q9u32, q10u32, q11u32; + int16x4x2_t v2tmp0, v2tmp1; + int32x2x2_t v2tmp2, v2tmp3; + + dEmptys16 = vdup_n_s16(0); + qEmptys32 = vdupq_n_s32(0); + q15s32 = vdupq_n_s32(3); + + d0s16 = vld1_s16(input); + input += pitch / 2; + d1s16 = vld1_s16(input); + input += pitch / 2; + d2s16 = vld1_s16(input); + input += pitch / 2; + d3s16 = vld1_s16(input); + + v2tmp2 = vtrn_s32(vreinterpret_s32_s16(d0s16), vreinterpret_s32_s16(d2s16)); + v2tmp3 = vtrn_s32(vreinterpret_s32_s16(d1s16), vreinterpret_s32_s16(d3s16)); + v2tmp0 = vtrn_s16(vreinterpret_s16_s32(v2tmp2.val[0]), // d0 + vreinterpret_s16_s32(v2tmp3.val[0])); // d1 + v2tmp1 = vtrn_s16(vreinterpret_s16_s32(v2tmp2.val[1]), // d2 + vreinterpret_s16_s32(v2tmp3.val[1])); // d3 + + d4s16 = vadd_s16(v2tmp0.val[0], v2tmp1.val[0]); + d5s16 = vadd_s16(v2tmp0.val[1], v2tmp1.val[1]); + d6s16 = vsub_s16(v2tmp0.val[1], v2tmp1.val[1]); + d7s16 = vsub_s16(v2tmp0.val[0], v2tmp1.val[0]); + + d4s16 = vshl_n_s16(d4s16, 2); + d5s16 = vshl_n_s16(d5s16, 2); + d6s16 = vshl_n_s16(d6s16, 2); + d7s16 = vshl_n_s16(d7s16, 2); + + d16u16 = vceq_s16(d4s16, dEmptys16); + d16u16 = vmvn_u16(d16u16); + + d0s16 = vadd_s16(d4s16, d5s16); + d3s16 = vsub_s16(d4s16, d5s16); + d1s16 = vadd_s16(d7s16, d6s16); + d2s16 = vsub_s16(d7s16, d6s16); + + d0s16 = vsub_s16(d0s16, vreinterpret_s16_u16(d16u16)); + + // Second for-loop + v2tmp2 = vtrn_s32(vreinterpret_s32_s16(d1s16), vreinterpret_s32_s16(d3s16)); + v2tmp3 = vtrn_s32(vreinterpret_s32_s16(d0s16), vreinterpret_s32_s16(d2s16)); + v2tmp0 = vtrn_s16(vreinterpret_s16_s32(v2tmp3.val[1]), // d2 + vreinterpret_s16_s32(v2tmp2.val[1])); // d3 + v2tmp1 = vtrn_s16(vreinterpret_s16_s32(v2tmp3.val[0]), // d0 + vreinterpret_s16_s32(v2tmp2.val[0])); // d1 + + q8s32 = vaddl_s16(v2tmp1.val[0], v2tmp0.val[0]); + q9s32 = vaddl_s16(v2tmp1.val[1], v2tmp0.val[1]); + q10s32 = vsubl_s16(v2tmp1.val[1], v2tmp0.val[1]); + q11s32 = vsubl_s16(v2tmp1.val[0], v2tmp0.val[0]); + + q0s32 = vaddq_s32(q8s32, q9s32); + q1s32 = vaddq_s32(q11s32, q10s32); + q2s32 = vsubq_s32(q11s32, q10s32); + q3s32 = vsubq_s32(q8s32, q9s32); + + q8u32 = vcltq_s32(q0s32, qEmptys32); + q9u32 = vcltq_s32(q1s32, qEmptys32); + q10u32 = vcltq_s32(q2s32, qEmptys32); + q11u32 = vcltq_s32(q3s32, qEmptys32); + + q8s32 = vreinterpretq_s32_u32(q8u32); + q9s32 = vreinterpretq_s32_u32(q9u32); + q10s32 = vreinterpretq_s32_u32(q10u32); + q11s32 = vreinterpretq_s32_u32(q11u32); + + q0s32 = vsubq_s32(q0s32, q8s32); + q1s32 = vsubq_s32(q1s32, q9s32); + q2s32 = vsubq_s32(q2s32, q10s32); + q3s32 = vsubq_s32(q3s32, q11s32); + + q8s32 = vaddq_s32(q0s32, q15s32); + q9s32 = vaddq_s32(q1s32, q15s32); + q10s32 = vaddq_s32(q2s32, q15s32); + q11s32 = vaddq_s32(q3s32, q15s32); + + d0s16 = vshrn_n_s32(q8s32, 3); + d1s16 = vshrn_n_s32(q9s32, 3); + d2s16 = vshrn_n_s32(q10s32, 3); + d3s16 = vshrn_n_s32(q11s32, 3); + + q0s16 = vcombine_s16(d0s16, d1s16); + q1s16 = vcombine_s16(d2s16, d3s16); + + vst1q_s16(output, q0s16); + vst1q_s16(output + 8, q1s16); + return; +} +#endif // VPX_INCOMPATIBLE_GCC |