diff options
Diffstat (limited to 'vpx_dsp')
| -rw-r--r-- | vpx_dsp/ppc/inv_txfm_vsx.c | 104 | ||||
| -rw-r--r-- | vpx_dsp/vpx_dsp.mk | 2 | ||||
| -rw-r--r-- | vpx_dsp/vpx_dsp_rtcd_defs.pl | 2 |
3 files changed, 107 insertions, 1 deletions
diff --git a/vpx_dsp/ppc/inv_txfm_vsx.c b/vpx_dsp/ppc/inv_txfm_vsx.c new file mode 100644 index 000000000..ea208f6e5 --- /dev/null +++ b/vpx_dsp/ppc/inv_txfm_vsx.c @@ -0,0 +1,104 @@ +/* + * 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 <math.h> +#include <stdlib.h> +#include <string.h> + +#include "vpx_dsp/ppc/types_vsx.h" + +#include "./vpx_dsp_rtcd.h" +#include "vpx_dsp/inv_txfm.h" + +static int16x8_t cospi8_v = { 15137, 15137, 15137, 15137, + 15137, 15137, 15137, 15137 }; +static int16x8_t cospi16_v = { 11585, 11585, 11585, 11585, + 11585, 11585, 11585, 11585 }; +static int16x8_t cospi24_v = { 6270, 6270, 6270, 6270, 6270, 6270, 6270, 6270 }; + +#define ROUND_SHIFT_INIT \ + const int32x4_t shift = vec_sl(vec_splat_s32(1), vec_splat_u32(13)); \ + const uint32x4_t shift14 = vec_splat_u32(14); + +#define DCT_CONST_ROUND_SHIFT(vec) vec = vec_sra(vec_add(vec, shift), shift14); + +#define PIXEL_ADD_INIT \ + int16x8_t add8 = vec_splat_s16(8); \ + uint16x8_t shift4 = vec_splat_u16(4); + +#define PIXEL_ADD(out, in) out = vec_sra(vec_add(in, add8), shift4); + +#define IDCT4(in0, in1, out0, out1) \ + t0 = vec_add(in0, in1); \ + t1 = vec_sub(in0, in1); \ + tmp16_0 = vec_mergeh(t0, t1); \ + temp1 = vec_sra(vec_add(vec_mule(tmp16_0, cospi16_v), shift), shift14); \ + temp2 = vec_sra(vec_add(vec_mulo(tmp16_0, cospi16_v), shift), shift14); \ + \ + tmp16_0 = vec_mergel(in0, in1); \ + temp3 = vec_sub(vec_mule(tmp16_0, cospi24_v), vec_mulo(tmp16_0, cospi8_v)); \ + DCT_CONST_ROUND_SHIFT(temp3); \ + temp4 = vec_add(vec_mule(tmp16_0, cospi8_v), vec_mulo(tmp16_0, cospi24_v)); \ + DCT_CONST_ROUND_SHIFT(temp4); \ + \ + step0 = vec_packs(temp1, temp2); \ + step1 = vec_packs(temp4, temp3); \ + out0 = vec_add(step0, step1); \ + out1 = vec_sub(step0, step1); \ + out1 = vec_perm(out1, out1, mask0); + +void vpx_idct4x4_16_add_vsx(const tran_low_t *input, uint8_t *dest, + int stride) { + int32x4_t temp1, temp2, temp3, temp4; + int16x8_t step0, step1, tmp16_0, tmp16_1, t_out0, t_out1; + uint8x16_t mask0 = { 0x8, 0x9, 0xA, 0xB, 0xC, 0xD, 0xE, 0xF, + 0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7 }; + uint8x16_t mask1 = { 0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, + 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17 }; + int16x8_t v0 = vec_vsx_ld(0, input); + int16x8_t v1 = vec_vsx_ld(16, input); + int16x8_t t0 = vec_mergeh(v0, v1); + int16x8_t t1 = vec_mergel(v0, v1); + + uint8x16_t dest0 = vec_vsx_ld(0, dest); + uint8x16_t dest1 = vec_vsx_ld(stride, dest); + uint8x16_t dest2 = vec_vsx_ld(2 * stride, dest); + uint8x16_t dest3 = vec_vsx_ld(3 * stride, dest); + uint8x16_t zerov = vec_splat_u8(0); + int16x8_t d_u0 = (int16x8_t)vec_mergeh(dest0, zerov); + int16x8_t d_u1 = (int16x8_t)vec_mergeh(dest1, zerov); + int16x8_t d_u2 = (int16x8_t)vec_mergeh(dest2, zerov); + int16x8_t d_u3 = (int16x8_t)vec_mergeh(dest3, zerov); + uint8x16_t output_v; + uint8_t tmp_dest[16]; + ROUND_SHIFT_INIT + PIXEL_ADD_INIT; + + v0 = vec_mergeh(t0, t1); + v1 = vec_mergel(t0, t1); + + IDCT4(v0, v1, t_out0, t_out1); + // transpose + t0 = vec_mergeh(t_out0, t_out1); + t1 = vec_mergel(t_out0, t_out1); + v0 = vec_mergeh(t0, t1); + v1 = vec_mergel(t0, t1); + IDCT4(v0, v1, t_out0, t_out1); + + PIXEL_ADD(v0, t_out0); + PIXEL_ADD(v1, t_out1); + tmp16_0 = vec_add(vec_perm(d_u0, d_u1, mask1), v0); + tmp16_1 = vec_add(vec_perm(d_u2, d_u3, mask1), v1); + output_v = vec_packsu(tmp16_0, tmp16_1); + + vec_vsx_st(output_v, 0, tmp_dest); + for (int i = 0; i < 4; i++) + for (int j = 0; j < 4; j++) dest[j * stride + i] = tmp_dest[j * 4 + i]; +} diff --git a/vpx_dsp/vpx_dsp.mk b/vpx_dsp/vpx_dsp.mk index e93146f43..c0b8d90c4 100644 --- a/vpx_dsp/vpx_dsp.mk +++ b/vpx_dsp/vpx_dsp.mk @@ -215,6 +215,8 @@ DSP_SRCS-$(HAVE_SSSE3) += x86/inv_txfm_ssse3.c DSP_SRCS-$(HAVE_NEON_ASM) += arm/save_reg_neon$(ASM) +DSP_SRCS-$(HAVE_VSX) += ppc/inv_txfm_vsx.c + ifneq ($(CONFIG_VP9_HIGHBITDEPTH),yes) DSP_SRCS-$(HAVE_MSA) += mips/inv_txfm_msa.h DSP_SRCS-$(HAVE_MSA) += mips/idct4x4_msa.c diff --git a/vpx_dsp/vpx_dsp_rtcd_defs.pl b/vpx_dsp/vpx_dsp_rtcd_defs.pl index 8446f46ce..aa1fc2310 100644 --- a/vpx_dsp/vpx_dsp_rtcd_defs.pl +++ b/vpx_dsp/vpx_dsp_rtcd_defs.pl @@ -584,7 +584,7 @@ add_proto qw/void vpx_iwht4x4_1_add/, "const tran_low_t *input, uint8_t *dest, i if (vpx_config("CONFIG_EMULATE_HARDWARE") ne "yes") { # Note that there are more specializations appended when CONFIG_VP9_HIGHBITDEPTH is off. - specialize qw/vpx_idct4x4_16_add neon sse2/; + specialize qw/vpx_idct4x4_16_add neon sse2 vsx/; specialize qw/vpx_idct4x4_1_add neon sse2/; specialize qw/vpx_idct8x8_64_add neon sse2/; specialize qw/vpx_idct8x8_12_add neon sse2 ssse3/; |