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Diffstat (limited to 'media/libvpx/libvpx/vpx_dsp/arm/fdct_partial_neon.c')
| -rw-r--r-- | media/libvpx/libvpx/vpx_dsp/arm/fdct_partial_neon.c | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vpx_dsp/arm/fdct_partial_neon.c b/media/libvpx/libvpx/vpx_dsp/arm/fdct_partial_neon.c new file mode 100644 index 0000000000..718dba0d91 --- /dev/null +++ b/media/libvpx/libvpx/vpx_dsp/arm/fdct_partial_neon.c @@ -0,0 +1,168 @@ +/* + * Copyright (c) 2017 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_dsp_rtcd.h" +#include "./vpx_config.h" +#include "vpx_dsp/arm/mem_neon.h" +#include "vpx_dsp/arm/sum_neon.h" + +void vpx_fdct4x4_1_neon(const int16_t *input, tran_low_t *output, int stride) { + int16x4_t a0, a1, a2, a3; + int16x8_t b0, b1; + int16x8_t c; + + a0 = vld1_s16(input); + input += stride; + a1 = vld1_s16(input); + input += stride; + a2 = vld1_s16(input); + input += stride; + a3 = vld1_s16(input); + + b0 = vcombine_s16(a0, a1); + b1 = vcombine_s16(a2, a3); + + c = vaddq_s16(b0, b1); + + output[0] = (tran_low_t)(horizontal_add_int16x8(c) << 1); + output[1] = 0; +} + +void vpx_fdct8x8_1_neon(const int16_t *input, tran_low_t *output, int stride) { + int r; + int16x8_t sum = vld1q_s16(&input[0]); + + for (r = 1; r < 8; ++r) { + const int16x8_t input_00 = vld1q_s16(&input[r * stride]); + sum = vaddq_s16(sum, input_00); + } + + output[0] = (tran_low_t)horizontal_add_int16x8(sum); + output[1] = 0; +} + +void vpx_fdct16x16_1_neon(const int16_t *input, tran_low_t *output, + int stride) { + int r; + int16x8_t left = vld1q_s16(input); + int16x8_t right = vld1q_s16(input + 8); + int32_t sum; + input += stride; + + for (r = 1; r < 16; ++r) { + const int16x8_t a = vld1q_s16(input); + const int16x8_t b = vld1q_s16(input + 8); + input += stride; + left = vaddq_s16(left, a); + right = vaddq_s16(right, b); + } + + sum = horizontal_add_int16x8(left) + horizontal_add_int16x8(right); + + output[0] = (tran_low_t)(sum >> 1); + output[1] = 0; +} + +void vpx_fdct32x32_1_neon(const int16_t *input, tran_low_t *output, + int stride) { + int r; + int16x8_t a0 = vld1q_s16(input); + int16x8_t a1 = vld1q_s16(input + 8); + int16x8_t a2 = vld1q_s16(input + 16); + int16x8_t a3 = vld1q_s16(input + 24); + int32_t sum; + input += stride; + + for (r = 1; r < 32; ++r) { + const int16x8_t b0 = vld1q_s16(input); + const int16x8_t b1 = vld1q_s16(input + 8); + const int16x8_t b2 = vld1q_s16(input + 16); + const int16x8_t b3 = vld1q_s16(input + 24); + input += stride; + a0 = vaddq_s16(a0, b0); + a1 = vaddq_s16(a1, b1); + a2 = vaddq_s16(a2, b2); + a3 = vaddq_s16(a3, b3); + } + + sum = horizontal_add_int16x8(a0); + sum += horizontal_add_int16x8(a1); + sum += horizontal_add_int16x8(a2); + sum += horizontal_add_int16x8(a3); + output[0] = (tran_low_t)(sum >> 3); + output[1] = 0; +} + +#if CONFIG_VP9_HIGHBITDEPTH + +void vpx_highbd_fdct16x16_1_neon(const int16_t *input, tran_low_t *output, + int stride) { + int32x4_t partial_sum[4] = { vdupq_n_s32(0), vdupq_n_s32(0), vdupq_n_s32(0), + vdupq_n_s32(0) }; + int32_t sum; + + int r = 0; + do { + const int16x8_t a = vld1q_s16(input); + const int16x8_t b = vld1q_s16(input + 8); + input += stride; + partial_sum[0] = vaddw_s16(partial_sum[0], vget_low_s16(a)); + partial_sum[1] = vaddw_s16(partial_sum[1], vget_high_s16(a)); + partial_sum[2] = vaddw_s16(partial_sum[2], vget_low_s16(b)); + partial_sum[3] = vaddw_s16(partial_sum[3], vget_high_s16(b)); + r++; + } while (r < 16); + + partial_sum[0] = vaddq_s32(partial_sum[0], partial_sum[1]); + partial_sum[2] = vaddq_s32(partial_sum[2], partial_sum[3]); + partial_sum[0] = vaddq_s32(partial_sum[0], partial_sum[2]); + sum = horizontal_add_int32x4(partial_sum[0]); + + output[0] = (tran_low_t)(sum >> 1); + output[1] = 0; +} + +void vpx_highbd_fdct32x32_1_neon(const int16_t *input, tran_low_t *output, + int stride) { + int32x4_t partial_sum[4] = { vdupq_n_s32(0), vdupq_n_s32(0), vdupq_n_s32(0), + vdupq_n_s32(0) }; + + int32_t sum; + + int r = 0; + do { + const int16x8_t a0 = vld1q_s16(input); + const int16x8_t a1 = vld1q_s16(input + 8); + const int16x8_t a2 = vld1q_s16(input + 16); + const int16x8_t a3 = vld1q_s16(input + 24); + input += stride; + partial_sum[0] = vaddw_s16(partial_sum[0], vget_low_s16(a0)); + partial_sum[0] = vaddw_s16(partial_sum[0], vget_high_s16(a0)); + partial_sum[1] = vaddw_s16(partial_sum[1], vget_low_s16(a1)); + partial_sum[1] = vaddw_s16(partial_sum[1], vget_high_s16(a1)); + partial_sum[2] = vaddw_s16(partial_sum[2], vget_low_s16(a2)); + partial_sum[2] = vaddw_s16(partial_sum[2], vget_high_s16(a2)); + partial_sum[3] = vaddw_s16(partial_sum[3], vget_low_s16(a3)); + partial_sum[3] = vaddw_s16(partial_sum[3], vget_high_s16(a3)); + r++; + } while (r < 32); + + partial_sum[0] = vaddq_s32(partial_sum[0], partial_sum[1]); + partial_sum[2] = vaddq_s32(partial_sum[2], partial_sum[3]); + partial_sum[0] = vaddq_s32(partial_sum[0], partial_sum[2]); + sum = horizontal_add_int32x4(partial_sum[0]); + + output[0] = (tran_low_t)(sum >> 3); + output[1] = 0; +} + +#endif // CONFIG_VP9_HIGHBITDEPTH |