diff options
Diffstat (limited to 'third_party/aom/av1/common/ppc')
| -rw-r--r-- | third_party/aom/av1/common/ppc/cfl_ppc.c | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/third_party/aom/av1/common/ppc/cfl_ppc.c b/third_party/aom/av1/common/ppc/cfl_ppc.c new file mode 100644 index 000000000..58933a7b3 --- /dev/null +++ b/third_party/aom/av1/common/ppc/cfl_ppc.c @@ -0,0 +1,153 @@ +/* + * Copyright (c) 2017, Alliance for Open Media. All rights reserved + * + * This source code is subject to the terms of the BSD 2 Clause License and + * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License + * was not distributed with this source code in the LICENSE file, you can + * obtain it at www.aomedia.org/license/software. If the Alliance for Open + * Media Patent License 1.0 was not distributed with this source code in the + * PATENTS file, you can obtain it at www.aomedia.org/license/patent. + */ + +#include <altivec.h> + +#include "config/av1_rtcd.h" + +#include "av1/common/cfl.h" + +#define OFF_0 0 +#define OFF_1 16 +#define OFF_2 32 +#define OFF_3 48 +#define CFL_BUF_LINE_BYTES 64 +#define CFL_LINE_1 64 +#define CFL_LINE_2 128 +#define CFL_LINE_3 192 + +typedef vector int8_t int8x16_t; +typedef vector uint8_t uint8x16_t; +typedef vector int16_t int16x8_t; +typedef vector uint16_t uint16x8_t; +typedef vector int32_t int32x4_t; +typedef vector uint32_t uint32x4_t; +typedef vector uint64_t uint64x2_t; + +static INLINE void subtract_average_vsx(int16_t *pred_buf, int width, + int height, int round_offset, + int num_pel_log2) { + const int16_t *end = pred_buf + height * CFL_BUF_LINE; + const int16_t *sum_buf = pred_buf; + const uint32x4_t div_shift = vec_splats((uint32_t)num_pel_log2); + const uint8x16_t mask_64 = { 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, + 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 }; + const uint8x16_t mask_32 = { 0x14, 0x15, 0x16, 0x17, 0x00, 0x01, 0x02, 0x03, + 0x1C, 0x1D, 0x1E, 0x1F, 0x08, 0x09, 0x0A, 0x0B }; + + int32x4_t sum_32x4_0 = { 0, 0, 0, round_offset }; + int32x4_t sum_32x4_1 = { 0, 0, 0, 0 }; + do { + sum_32x4_0 = vec_sum4s(vec_vsx_ld(OFF_0, sum_buf), sum_32x4_0); + sum_32x4_1 = vec_sum4s(vec_vsx_ld(OFF_0 + CFL_LINE_1, sum_buf), sum_32x4_1); + if (width >= 16) { + sum_32x4_0 = vec_sum4s(vec_vsx_ld(OFF_1, sum_buf), sum_32x4_0); + sum_32x4_1 = + vec_sum4s(vec_vsx_ld(OFF_1 + CFL_LINE_1, sum_buf), sum_32x4_1); + } + if (width == 32) { + sum_32x4_0 = vec_sum4s(vec_vsx_ld(OFF_2, sum_buf), sum_32x4_0); + sum_32x4_1 = + vec_sum4s(vec_vsx_ld(OFF_2 + CFL_LINE_1, sum_buf), sum_32x4_1); + sum_32x4_0 = vec_sum4s(vec_vsx_ld(OFF_3, sum_buf), sum_32x4_0); + sum_32x4_1 = + vec_sum4s(vec_vsx_ld(OFF_3 + CFL_LINE_1, sum_buf), sum_32x4_1); + } + } while ((sum_buf += (CFL_BUF_LINE * 2)) < end); + int32x4_t sum_32x4 = vec_add(sum_32x4_0, sum_32x4_1); + + const int32x4_t perm_64 = vec_perm(sum_32x4, sum_32x4, mask_64); + sum_32x4 = vec_add(sum_32x4, perm_64); + const int32x4_t perm_32 = vec_perm(sum_32x4, sum_32x4, mask_32); + sum_32x4 = vec_add(sum_32x4, perm_32); + const int32x4_t avg = vec_sr(sum_32x4, div_shift); + const int16x8_t vec_avg = vec_pack(avg, avg); + do { + vec_vsx_st(vec_sub(vec_vsx_ld(OFF_0, pred_buf), vec_avg), OFF_0, pred_buf); + vec_vsx_st(vec_sub(vec_vsx_ld(OFF_0 + CFL_LINE_1, pred_buf), vec_avg), + OFF_0 + CFL_BUF_LINE_BYTES, pred_buf); + vec_vsx_st(vec_sub(vec_vsx_ld(OFF_0 + CFL_LINE_2, pred_buf), vec_avg), + OFF_0 + CFL_LINE_2, pred_buf); + vec_vsx_st(vec_sub(vec_vsx_ld(OFF_0 + CFL_LINE_3, pred_buf), vec_avg), + OFF_0 + CFL_LINE_3, pred_buf); + if (width >= 16) { + vec_vsx_st(vec_sub(vec_vsx_ld(OFF_1, pred_buf), vec_avg), OFF_1, + pred_buf); + vec_vsx_st(vec_sub(vec_vsx_ld(OFF_1 + CFL_LINE_1, pred_buf), vec_avg), + OFF_1 + CFL_LINE_1, pred_buf); + vec_vsx_st(vec_sub(vec_vsx_ld(OFF_1 + CFL_LINE_2, pred_buf), vec_avg), + OFF_1 + CFL_LINE_2, pred_buf); + vec_vsx_st(vec_sub(vec_vsx_ld(OFF_1 + CFL_LINE_3, pred_buf), vec_avg), + OFF_1 + CFL_LINE_3, pred_buf); + } + if (width == 32) { + vec_vsx_st(vec_sub(vec_vsx_ld(OFF_2, pred_buf), vec_avg), OFF_2, + pred_buf); + vec_vsx_st(vec_sub(vec_vsx_ld(OFF_2 + CFL_LINE_1, pred_buf), vec_avg), + OFF_2 + CFL_LINE_1, pred_buf); + vec_vsx_st(vec_sub(vec_vsx_ld(OFF_2 + CFL_LINE_2, pred_buf), vec_avg), + OFF_2 + CFL_LINE_2, pred_buf); + vec_vsx_st(vec_sub(vec_vsx_ld(OFF_2 + CFL_LINE_3, pred_buf), vec_avg), + OFF_2 + CFL_LINE_3, pred_buf); + + vec_vsx_st(vec_sub(vec_vsx_ld(OFF_3, pred_buf), vec_avg), OFF_3, + pred_buf); + vec_vsx_st(vec_sub(vec_vsx_ld(OFF_3 + CFL_LINE_1, pred_buf), vec_avg), + OFF_3 + CFL_LINE_1, pred_buf); + vec_vsx_st(vec_sub(vec_vsx_ld(OFF_3 + CFL_LINE_2, pred_buf), vec_avg), + OFF_3 + CFL_LINE_2, pred_buf); + vec_vsx_st(vec_sub(vec_vsx_ld(OFF_3 + CFL_LINE_3, pred_buf), vec_avg), + OFF_3 + CFL_LINE_3, pred_buf); + } + } while ((pred_buf += CFL_BUF_LINE * 4) < end); +} + +// Declare wrappers for VSX sizes +CFL_SUB_AVG_X(vsx, 8, 4, 16, 5) +CFL_SUB_AVG_X(vsx, 8, 8, 32, 6) +CFL_SUB_AVG_X(vsx, 8, 16, 64, 7) +CFL_SUB_AVG_X(vsx, 8, 32, 128, 8) +CFL_SUB_AVG_X(vsx, 16, 4, 32, 6) +CFL_SUB_AVG_X(vsx, 16, 8, 64, 7) +CFL_SUB_AVG_X(vsx, 16, 16, 128, 8) +CFL_SUB_AVG_X(vsx, 16, 32, 256, 9) +CFL_SUB_AVG_X(vsx, 32, 8, 128, 8) +CFL_SUB_AVG_X(vsx, 32, 16, 256, 9) +CFL_SUB_AVG_X(vsx, 32, 32, 512, 10) + +// Based on observation, for small blocks VSX does not outperform C (no 64bit +// load and store intrinsics). So we call the C code for block widths 4. +cfl_subtract_average_fn get_subtract_average_fn_vsx(TX_SIZE tx_size) { + static const cfl_subtract_average_fn sub_avg[TX_SIZES_ALL] = { + subtract_average_4x4_c, /* 4x4 */ + subtract_average_8x8_vsx, /* 8x8 */ + subtract_average_16x16_vsx, /* 16x16 */ + subtract_average_32x32_vsx, /* 32x32 */ + cfl_subtract_average_null, /* 64x64 (invalid CFL size) */ + subtract_average_4x8_c, /* 4x8 */ + subtract_average_8x4_vsx, /* 8x4 */ + subtract_average_8x16_vsx, /* 8x16 */ + subtract_average_16x8_vsx, /* 16x8 */ + subtract_average_16x32_vsx, /* 16x32 */ + subtract_average_32x16_vsx, /* 32x16 */ + cfl_subtract_average_null, /* 32x64 (invalid CFL size) */ + cfl_subtract_average_null, /* 64x32 (invalid CFL size) */ + subtract_average_4x16_c, /* 4x16 */ + subtract_average_16x4_vsx, /* 16x4 */ + subtract_average_8x32_vsx, /* 8x32 */ + subtract_average_32x8_vsx, /* 32x8 */ + cfl_subtract_average_null, /* 16x64 (invalid CFL size) */ + cfl_subtract_average_null, /* 64x16 (invalid CFL size) */ + }; + // Modulo TX_SIZES_ALL to ensure that an attacker won't be able to + // index the function pointer array out of bounds. + return sub_avg[tx_size % TX_SIZES_ALL]; +} |