diff options
Diffstat (limited to 'media/libvpx/libvpx/vpx_dsp/arm/fdct8x8_neon.c')
| -rw-r--r-- | media/libvpx/libvpx/vpx_dsp/arm/fdct8x8_neon.c | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vpx_dsp/arm/fdct8x8_neon.c b/media/libvpx/libvpx/vpx_dsp/arm/fdct8x8_neon.c new file mode 100644 index 0000000000..75ee6f2230 --- /dev/null +++ b/media/libvpx/libvpx/vpx_dsp/arm/fdct8x8_neon.c @@ -0,0 +1,143 @@ +/* + * Copyright (c) 2015 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/txfm_common.h" +#include "vpx_dsp/vpx_dsp_common.h" +#include "vpx_dsp/arm/idct_neon.h" +#include "vpx_dsp/arm/fdct_neon.h" +#include "vpx_dsp/arm/mem_neon.h" +#include "vpx_dsp/arm/fdct8x8_neon.h" + +void vpx_fdct8x8_neon(const int16_t *input, tran_low_t *final_output, + int stride) { + // stage 1 + int16x8_t in[8]; + in[0] = vshlq_n_s16(vld1q_s16(&input[0 * stride]), 2); + in[1] = vshlq_n_s16(vld1q_s16(&input[1 * stride]), 2); + in[2] = vshlq_n_s16(vld1q_s16(&input[2 * stride]), 2); + in[3] = vshlq_n_s16(vld1q_s16(&input[3 * stride]), 2); + in[4] = vshlq_n_s16(vld1q_s16(&input[4 * stride]), 2); + in[5] = vshlq_n_s16(vld1q_s16(&input[5 * stride]), 2); + in[6] = vshlq_n_s16(vld1q_s16(&input[6 * stride]), 2); + in[7] = vshlq_n_s16(vld1q_s16(&input[7 * stride]), 2); + + vpx_fdct8x8_pass1_neon(in); + vpx_fdct8x8_pass2_neon(in); + { + // from vpx_dct_sse2.c + // Post-condition (division by two) + // division of two 16 bits signed numbers using shifts + // n / 2 = (n - (n >> 15)) >> 1 + const int16x8_t sign_in0 = vshrq_n_s16(in[0], 15); + const int16x8_t sign_in1 = vshrq_n_s16(in[1], 15); + const int16x8_t sign_in2 = vshrq_n_s16(in[2], 15); + const int16x8_t sign_in3 = vshrq_n_s16(in[3], 15); + const int16x8_t sign_in4 = vshrq_n_s16(in[4], 15); + const int16x8_t sign_in5 = vshrq_n_s16(in[5], 15); + const int16x8_t sign_in6 = vshrq_n_s16(in[6], 15); + const int16x8_t sign_in7 = vshrq_n_s16(in[7], 15); + in[0] = vhsubq_s16(in[0], sign_in0); + in[1] = vhsubq_s16(in[1], sign_in1); + in[2] = vhsubq_s16(in[2], sign_in2); + in[3] = vhsubq_s16(in[3], sign_in3); + in[4] = vhsubq_s16(in[4], sign_in4); + in[5] = vhsubq_s16(in[5], sign_in5); + in[6] = vhsubq_s16(in[6], sign_in6); + in[7] = vhsubq_s16(in[7], sign_in7); + // store results + store_s16q_to_tran_low(final_output + 0 * 8, in[0]); + store_s16q_to_tran_low(final_output + 1 * 8, in[1]); + store_s16q_to_tran_low(final_output + 2 * 8, in[2]); + store_s16q_to_tran_low(final_output + 3 * 8, in[3]); + store_s16q_to_tran_low(final_output + 4 * 8, in[4]); + store_s16q_to_tran_low(final_output + 5 * 8, in[5]); + store_s16q_to_tran_low(final_output + 6 * 8, in[6]); + store_s16q_to_tran_low(final_output + 7 * 8, in[7]); + } +} + +#if CONFIG_VP9_HIGHBITDEPTH + +void vpx_highbd_fdct8x8_neon(const int16_t *input, tran_low_t *final_output, + int stride) { + // input[M * stride] * 16 + int32x4_t left[8], right[8]; + int16x8_t in[8]; + in[0] = vld1q_s16(input + 0 * stride); + in[1] = vld1q_s16(input + 1 * stride); + in[2] = vld1q_s16(input + 2 * stride); + in[3] = vld1q_s16(input + 3 * stride); + in[4] = vld1q_s16(input + 4 * stride); + in[5] = vld1q_s16(input + 5 * stride); + in[6] = vld1q_s16(input + 6 * stride); + in[7] = vld1q_s16(input + 7 * stride); + + left[0] = vshll_n_s16(vget_low_s16(in[0]), 2); + left[1] = vshll_n_s16(vget_low_s16(in[1]), 2); + left[2] = vshll_n_s16(vget_low_s16(in[2]), 2); + left[3] = vshll_n_s16(vget_low_s16(in[3]), 2); + left[4] = vshll_n_s16(vget_low_s16(in[4]), 2); + left[5] = vshll_n_s16(vget_low_s16(in[5]), 2); + left[6] = vshll_n_s16(vget_low_s16(in[6]), 2); + left[7] = vshll_n_s16(vget_low_s16(in[7]), 2); + right[0] = vshll_n_s16(vget_high_s16(in[0]), 2); + right[1] = vshll_n_s16(vget_high_s16(in[1]), 2); + right[2] = vshll_n_s16(vget_high_s16(in[2]), 2); + right[3] = vshll_n_s16(vget_high_s16(in[3]), 2); + right[4] = vshll_n_s16(vget_high_s16(in[4]), 2); + right[5] = vshll_n_s16(vget_high_s16(in[5]), 2); + right[6] = vshll_n_s16(vget_high_s16(in[6]), 2); + right[7] = vshll_n_s16(vget_high_s16(in[7]), 2); + + vpx_highbd_fdct8x8_pass1_neon(left, right); + vpx_highbd_fdct8x8_pass2_neon(left, right); + { + left[0] = add_round_shift_half_s32(left[0]); + left[1] = add_round_shift_half_s32(left[1]); + left[2] = add_round_shift_half_s32(left[2]); + left[3] = add_round_shift_half_s32(left[3]); + left[4] = add_round_shift_half_s32(left[4]); + left[5] = add_round_shift_half_s32(left[5]); + left[6] = add_round_shift_half_s32(left[6]); + left[7] = add_round_shift_half_s32(left[7]); + right[0] = add_round_shift_half_s32(right[0]); + right[1] = add_round_shift_half_s32(right[1]); + right[2] = add_round_shift_half_s32(right[2]); + right[3] = add_round_shift_half_s32(right[3]); + right[4] = add_round_shift_half_s32(right[4]); + right[5] = add_round_shift_half_s32(right[5]); + right[6] = add_round_shift_half_s32(right[6]); + right[7] = add_round_shift_half_s32(right[7]); + + // store results + vst1q_s32(final_output, left[0]); + vst1q_s32(final_output + 4, right[0]); + vst1q_s32(final_output + 8, left[1]); + vst1q_s32(final_output + 12, right[1]); + vst1q_s32(final_output + 16, left[2]); + vst1q_s32(final_output + 20, right[2]); + vst1q_s32(final_output + 24, left[3]); + vst1q_s32(final_output + 28, right[3]); + vst1q_s32(final_output + 32, left[4]); + vst1q_s32(final_output + 36, right[4]); + vst1q_s32(final_output + 40, left[5]); + vst1q_s32(final_output + 44, right[5]); + vst1q_s32(final_output + 48, left[6]); + vst1q_s32(final_output + 52, right[6]); + vst1q_s32(final_output + 56, left[7]); + vst1q_s32(final_output + 60, right[7]); + } +} + +#endif // CONFIG_VP9_HIGHBITDEPTH |