diff options
author | David Conrad <lessen42@gmail.com> | 2010-06-29 10:42:17 +0400 |
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committer | David Conrad <lessen42@gmail.com> | 2010-06-29 10:42:17 +0400 |
commit | 982fac73570fef49f97106faccf7acd0ccb06dc4 (patch) | |
tree | 44f6a96f4b8e0dfba954f4e0624718526a487cf1 /libavcodec/ppc | |
parent | 7bf4e9d7f7b21f2bbc6a9c39e38549dc2d1c57ba (diff) |
Altivec VP8 MC functions
Originally committed as revision 23884 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/ppc')
-rw-r--r-- | libavcodec/ppc/Makefile | 1 | ||||
-rw-r--r-- | libavcodec/ppc/vp8dsp_altivec.c | 295 |
2 files changed, 296 insertions, 0 deletions
diff --git a/libavcodec/ppc/Makefile b/libavcodec/ppc/Makefile index 5d5a59b4c5..32c9082342 100644 --- a/libavcodec/ppc/Makefile +++ b/libavcodec/ppc/Makefile @@ -5,6 +5,7 @@ ALTIVEC-OBJS-$(CONFIG_VC1_DECODER) += ppc/vc1dsp_altivec.o ALTIVEC-OBJS-$(CONFIG_VP3_DECODER) += ppc/vp3dsp_altivec.o ALTIVEC-OBJS-$(CONFIG_VP5_DECODER) += ppc/vp3dsp_altivec.o ALTIVEC-OBJS-$(CONFIG_VP6_DECODER) += ppc/vp3dsp_altivec.o +ALTIVEC-OBJS-$(CONFIG_VP8_DECODER) += ppc/vp8dsp_altivec.o OBJS-$(HAVE_ALTIVEC) += ppc/check_altivec.o \ ppc/dsputil_altivec.o \ diff --git a/libavcodec/ppc/vp8dsp_altivec.c b/libavcodec/ppc/vp8dsp_altivec.c new file mode 100644 index 0000000000..f7b3cda7a4 --- /dev/null +++ b/libavcodec/ppc/vp8dsp_altivec.c @@ -0,0 +1,295 @@ +/** + * VP8 compatible video decoder + * + * Copyright (C) 2010 David Conrad + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "libavcodec/vp8dsp.h" +#include "dsputil_altivec.h" +#include "types_altivec.h" +#include "util_altivec.h" + +#define REPT4(...) { __VA_ARGS__, __VA_ARGS__, __VA_ARGS__, __VA_ARGS__ } + +// h subpel filter uses msum to multiply+add 4 pixel taps at once +static const vec_s8 h_subpel_filters_inner[7] = +{ + REPT4( -6, 123, 12, -1), + REPT4(-11, 108, 36, -8), + REPT4( -9, 93, 50, -6), + REPT4(-16, 77, 77, -16), + REPT4( -6, 50, 93, -9), + REPT4( -8, 36, 108, -11), + REPT4( -1, 12, 123, -6), +}; + +// for 6tap filters, these are the outer two taps +// The zeros mask off pixels 4-7 when filtering 0-3 +// and vice-versa +static const vec_s8 h_subpel_filters_outer[3] = +{ + REPT4(0, 0, 2, 1), + REPT4(0, 0, 3, 3), + REPT4(0, 0, 1, 2), +}; + +#define LOAD_H_SUBPEL_FILTER(i) \ + vec_s8 filter_inner = h_subpel_filters_inner[i]; \ + vec_s8 filter_outerh = h_subpel_filters_outer[(i)>>1]; \ + vec_s8 filter_outerl = vec_sld(filter_outerh, filter_outerh, 2) + +#define FILTER_H(dstv, off) \ + a = vec_ld((off)-2, src); \ + b = vec_ld((off)-2+15, src); \ +\ + pixh = vec_perm(a, b, permh##off); \ + pixl = vec_perm(a, b, perml##off); \ + filth = vec_msum(filter_inner, pixh, c64); \ + filtl = vec_msum(filter_inner, pixl, c64); \ +\ + if (is6tap) { \ + outer = vec_perm(a, b, perm_6tap##off); \ + filth = vec_msum(filter_outerh, outer, filth); \ + filtl = vec_msum(filter_outerl, outer, filtl); \ + } \ + if (w == 4) \ + filtl = filth; /* discard pixels 4-7 */ \ + dstv = vec_packs(filth, filtl); \ + dstv = vec_sra(dstv, c7) + +static av_always_inline +void put_vp8_epel_h_altivec_core(uint8_t *dst, int dst_stride, + uint8_t *src, int src_stride, + int h, int mx, int w, int is6tap) +{ + LOAD_H_SUBPEL_FILTER(mx-1); + vec_u8 align_vec0, align_vec8, permh0, permh8, filt; + vec_u8 perm_6tap0, perm_6tap8, perml0, perml8; + vec_u8 a, b, pixh, pixl, outer; + vec_s16 f16h, f16l; + vec_s32 filth, filtl; + + vec_u8 perm_inner = { 1,2,3,4, 2,3,4,5, 3,4,5,6, 4,5,6,7 }; + vec_u8 perm_outer = { 4,9, 0,5, 5,10, 1,6, 6,11, 2,7, 7,12, 3,8 }; + vec_s32 c64 = vec_sl(vec_splat_s32(1), vec_splat_u32(6)); + vec_u16 c7 = vec_splat_u16(7); + + align_vec0 = vec_lvsl( -2, src); + align_vec8 = vec_lvsl(8-2, src); + + permh0 = vec_perm(align_vec0, align_vec0, perm_inner); + permh8 = vec_perm(align_vec8, align_vec8, perm_inner); + perm_inner = vec_add(perm_inner, vec_splat_u8(4)); + perml0 = vec_perm(align_vec0, align_vec0, perm_inner); + perml8 = vec_perm(align_vec8, align_vec8, perm_inner); + perm_6tap0 = vec_perm(align_vec0, align_vec0, perm_outer); + perm_6tap8 = vec_perm(align_vec8, align_vec8, perm_outer); + + while (h --> 0) { + FILTER_H(f16h, 0); + + if (w == 16) { + FILTER_H(f16l, 8); + filt = vec_packsu(f16h, f16l); + vec_st(filt, 0, dst); + } else { + filt = vec_packsu(f16h, f16h); + vec_ste((vec_u32)filt, 0, (uint32_t*)dst); + if (w == 8) + vec_ste((vec_u32)filt, 4, (uint32_t*)dst); + } + src += src_stride; + dst += dst_stride; + } +} + +// v subpel filter does a simple vertical multiply + add +static const vec_u8 v_subpel_filters[7] = +{ + { 0, 6, 123, 12, 1, 0 }, + { 2, 11, 108, 36, 8, 1 }, + { 0, 9, 93, 50, 6, 0 }, + { 3, 16, 77, 77, 16, 3 }, + { 0, 6, 50, 93, 9, 0 }, + { 1, 8, 36, 108, 11, 2 }, + { 0, 1, 12, 123, 6, 0 }, +}; + +#define LOAD_V_SUBPEL_FILTER(i) \ + vec_u8 subpel_filter = v_subpel_filters[i]; \ + vec_u8 f0 = vec_splat(subpel_filter, 0); \ + vec_u8 f1 = vec_splat(subpel_filter, 1); \ + vec_u8 f2 = vec_splat(subpel_filter, 2); \ + vec_u8 f3 = vec_splat(subpel_filter, 3); \ + vec_u8 f4 = vec_splat(subpel_filter, 4); \ + vec_u8 f5 = vec_splat(subpel_filter, 5) + +#define FILTER_V(dstv, vec_mul) \ + s1f = (vec_s16)vec_mul(s1, f1); \ + s2f = (vec_s16)vec_mul(s2, f2); \ + s3f = (vec_s16)vec_mul(s3, f3); \ + s4f = (vec_s16)vec_mul(s4, f4); \ + s2f = vec_subs(s2f, s1f); \ + s3f = vec_subs(s3f, s4f); \ + if (is6tap) { \ + s0f = (vec_s16)vec_mul(s0, f0); \ + s5f = (vec_s16)vec_mul(s5, f5); \ + s2f = vec_adds(s2f, s0f); \ + s3f = vec_adds(s3f, s5f); \ + } \ + dstv = vec_adds(s2f, s3f); \ + dstv = vec_adds(dstv, c64); \ + dstv = vec_sra(dstv, c7) + +static av_always_inline +void put_vp8_epel_v_altivec_core(uint8_t *dst, int dst_stride, + uint8_t *src, int src_stride, + int h, int my, int w, int is6tap) +{ + LOAD_V_SUBPEL_FILTER(my-1); + vec_u8 s0, s1, s2, s3, s4, s5, filt, align_vech, perm_vec, align_vecl; + vec_s16 s0f, s1f, s2f, s3f, s4f, s5f, f16h, f16l; + vec_s16 c64 = vec_sl(vec_splat_s16(1), vec_splat_u16(6)); + vec_u16 c7 = vec_splat_u16(7); + + // we want pixels 0-7 to be in the even positions and 8-15 in the odd, + // so combine this permute with the alignment permute vector + align_vech = vec_lvsl(0, src); + align_vecl = vec_sld(align_vech, align_vech, 8); + if (w ==16) + perm_vec = vec_mergeh(align_vech, align_vecl); + else + perm_vec = vec_mergeh(align_vech, align_vech); + + if (is6tap) + s0 = load_with_perm_vec(-2*src_stride, src, perm_vec); + s1 = load_with_perm_vec(-1*src_stride, src, perm_vec); + s2 = load_with_perm_vec( 0*src_stride, src, perm_vec); + s3 = load_with_perm_vec( 1*src_stride, src, perm_vec); + if (is6tap) + s4 = load_with_perm_vec( 2*src_stride, src, perm_vec); + + src += (2+is6tap)*src_stride; + + while (h --> 0) { + if (is6tap) + s5 = load_with_perm_vec(0, src, perm_vec); + else + s4 = load_with_perm_vec(0, src, perm_vec); + + FILTER_V(f16h, vec_mule); + + if (w == 16) { + FILTER_V(f16l, vec_mulo); + filt = vec_packsu(f16h, f16l); + vec_st(filt, 0, dst); + } else { + filt = vec_packsu(f16h, f16h); + if (w == 4) + filt = (vec_u8)vec_splat((vec_u32)filt, 0); + else + vec_ste((vec_u32)filt, 4, (uint32_t*)dst); + vec_ste((vec_u32)filt, 0, (uint32_t*)dst); + } + + if (is6tap) + s0 = s1; + s1 = s2; + s2 = s3; + s3 = s4; + if (is6tap) + s4 = s5; + + dst += dst_stride; + src += src_stride; + } +} + +#define EPEL_FUNCS(WIDTH, TAPS) \ +static av_noinline \ +void put_vp8_epel ## WIDTH ## _h ## TAPS ## _altivec(uint8_t *dst, int dst_stride, uint8_t *src, int src_stride, int h, int mx, int my) \ +{ \ + put_vp8_epel_h_altivec_core(dst, dst_stride, src, src_stride, h, mx, WIDTH, TAPS == 6); \ +} \ +\ +static av_noinline \ +void put_vp8_epel ## WIDTH ## _v ## TAPS ## _altivec(uint8_t *dst, int dst_stride, uint8_t *src, int src_stride, int h, int mx, int my) \ +{ \ + put_vp8_epel_v_altivec_core(dst, dst_stride, src, src_stride, h, my, WIDTH, TAPS == 6); \ +} + +#define EPEL_HV(WIDTH, HTAPS, VTAPS) \ +static void put_vp8_epel ## WIDTH ## _h ## HTAPS ## v ## VTAPS ## _altivec(uint8_t *dst, int stride, uint8_t *src, int s, int h, int mx, int my) \ +{ \ + DECLARE_ALIGNED(16, uint8_t, tmp)[(2*WIDTH+5)*16]; \ + put_vp8_epel ## WIDTH ## _h ## HTAPS ## _altivec(tmp, 16, src-2*stride, stride, h+5, mx, my); \ + put_vp8_epel ## WIDTH ## _v ## VTAPS ## _altivec(dst, stride, tmp+2*16, 16, h, mx, my); \ +} + +EPEL_FUNCS(16,6) +EPEL_FUNCS(8, 6) +EPEL_FUNCS(8, 4) +EPEL_FUNCS(4, 6) +EPEL_FUNCS(4, 4) + +EPEL_HV(16, 6,6) +EPEL_HV(8, 6,6) +EPEL_HV(8, 4,6) +EPEL_HV(8, 6,4) +EPEL_HV(8, 4,4) +EPEL_HV(4, 6,6) +EPEL_HV(4, 4,6) +EPEL_HV(4, 6,4) +EPEL_HV(4, 4,4) + +static void put_vp8_pixels16_altivec(uint8_t *dst, int stride, uint8_t *src, int s, int h, int mx, int my) +{ + put_pixels16_altivec(dst, src, stride, h); +} + +av_cold void ff_vp8dsp_init_altivec(VP8DSPContext *c) +{ + if (!has_altivec()) + return; + + c->put_vp8_epel_pixels_tab[0][0][0] = put_vp8_pixels16_altivec; + c->put_vp8_epel_pixels_tab[0][0][2] = put_vp8_epel16_h6_altivec; + c->put_vp8_epel_pixels_tab[0][2][0] = put_vp8_epel16_v6_altivec; + c->put_vp8_epel_pixels_tab[0][2][2] = put_vp8_epel16_h6v6_altivec; + + c->put_vp8_epel_pixels_tab[1][0][2] = put_vp8_epel8_h6_altivec; + c->put_vp8_epel_pixels_tab[1][2][0] = put_vp8_epel8_v6_altivec; + c->put_vp8_epel_pixels_tab[1][0][1] = put_vp8_epel8_h4_altivec; + c->put_vp8_epel_pixels_tab[1][1][0] = put_vp8_epel8_v4_altivec; + + c->put_vp8_epel_pixels_tab[1][2][2] = put_vp8_epel8_h6v6_altivec; + c->put_vp8_epel_pixels_tab[1][1][1] = put_vp8_epel8_h4v4_altivec; + c->put_vp8_epel_pixels_tab[1][1][2] = put_vp8_epel8_h6v4_altivec; + c->put_vp8_epel_pixels_tab[1][2][1] = put_vp8_epel8_h4v6_altivec; + + c->put_vp8_epel_pixels_tab[2][0][2] = put_vp8_epel4_h6_altivec; + c->put_vp8_epel_pixels_tab[2][2][0] = put_vp8_epel4_v6_altivec; + c->put_vp8_epel_pixels_tab[2][0][1] = put_vp8_epel4_h4_altivec; + c->put_vp8_epel_pixels_tab[2][1][0] = put_vp8_epel4_v4_altivec; + + c->put_vp8_epel_pixels_tab[2][2][2] = put_vp8_epel4_h6v6_altivec; + c->put_vp8_epel_pixels_tab[2][1][1] = put_vp8_epel4_h4v4_altivec; + c->put_vp8_epel_pixels_tab[2][1][2] = put_vp8_epel4_h6v4_altivec; + c->put_vp8_epel_pixels_tab[2][2][1] = put_vp8_epel4_h4v6_altivec; +} |