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4393331250
Pointers to void can be converted to any pointer to incomplete or object type and back; but they are nevertheless not completely generic pointers: There is no provision in the C standard that guarantees their convertibility with function pointers. C90 lacks a generic function pointer, C99 made every function pointer a generic function pointer and still disallows the convertibility with void *. Both GCC as well as Clang warn about this when using -pedantic. Therefore use unions to avoid these conversions. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
199 lines
6.6 KiB
C
199 lines
6.6 KiB
C
/*
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* x86 optimized discrete wavelet transform
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* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
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* Copyright (c) 2010 David Conrad
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/x86/asm.h"
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#include "libavutil/x86/cpu.h"
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#include "libavcodec/dirac_dwt.h"
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#define COMPOSE_VERTICAL(ext, align) \
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void ff_vertical_compose53iL0##ext(int16_t *b0, int16_t *b1, int16_t *b2, int width); \
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void ff_vertical_compose_dirac53iH0##ext(int16_t *b0, int16_t *b1, int16_t *b2, int width); \
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void ff_vertical_compose_dd137iL0##ext(int16_t *b0, int16_t *b1, int16_t *b2, int16_t *b3, int16_t *b4, int width); \
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void ff_vertical_compose_dd97iH0##ext(int16_t *b0, int16_t *b1, int16_t *b2, int16_t *b3, int16_t *b4, int width); \
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void ff_vertical_compose_haar##ext(int16_t *b0, int16_t *b1, int width); \
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void ff_horizontal_compose_haar0i##ext(int16_t *b, int16_t *tmp, int w);\
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void ff_horizontal_compose_haar1i##ext(int16_t *b, int16_t *tmp, int w);\
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\
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static void vertical_compose53iL0##ext(uint8_t *_b0, uint8_t *_b1, uint8_t *_b2, int width) \
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{ \
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int i, width_align = width&~(align-1); \
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int16_t *b0 = (int16_t *)_b0; \
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int16_t *b1 = (int16_t *)_b1; \
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int16_t *b2 = (int16_t *)_b2; \
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\
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for(i=width_align; i<width; i++) \
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b1[i] = COMPOSE_53iL0(b0[i], b1[i], b2[i]); \
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\
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ff_vertical_compose53iL0##ext(b0, b1, b2, width_align); \
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} \
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\
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static void vertical_compose_dirac53iH0##ext(uint8_t *_b0, uint8_t *_b1, uint8_t *_b2, int width) \
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{ \
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int i, width_align = width&~(align-1); \
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int16_t *b0 = (int16_t *)_b0; \
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int16_t *b1 = (int16_t *)_b1; \
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int16_t *b2 = (int16_t *)_b2; \
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\
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for(i=width_align; i<width; i++) \
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b1[i] = COMPOSE_DIRAC53iH0(b0[i], b1[i], b2[i]); \
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\
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ff_vertical_compose_dirac53iH0##ext(b0, b1, b2, width_align); \
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} \
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\
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static void vertical_compose_dd137iL0##ext(uint8_t *_b0, uint8_t *_b1, uint8_t *_b2, \
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uint8_t *_b3, uint8_t *_b4, int width) \
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{ \
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int i, width_align = width&~(align-1); \
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int16_t *b0 = (int16_t *)_b0; \
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int16_t *b1 = (int16_t *)_b1; \
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int16_t *b2 = (int16_t *)_b2; \
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int16_t *b3 = (int16_t *)_b3; \
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int16_t *b4 = (int16_t *)_b4; \
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\
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for(i=width_align; i<width; i++) \
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b2[i] = COMPOSE_DD137iL0(b0[i], b1[i], b2[i], b3[i], b4[i]); \
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\
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ff_vertical_compose_dd137iL0##ext(b0, b1, b2, b3, b4, width_align); \
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} \
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\
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static void vertical_compose_dd97iH0##ext(uint8_t *_b0, uint8_t *_b1, uint8_t *_b2, \
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uint8_t *_b3, uint8_t *_b4, int width) \
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{ \
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int i, width_align = width&~(align-1); \
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int16_t *b0 = (int16_t *)_b0; \
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int16_t *b1 = (int16_t *)_b1; \
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int16_t *b2 = (int16_t *)_b2; \
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int16_t *b3 = (int16_t *)_b3; \
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int16_t *b4 = (int16_t *)_b4; \
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\
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for(i=width_align; i<width; i++) \
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b2[i] = COMPOSE_DD97iH0(b0[i], b1[i], b2[i], b3[i], b4[i]); \
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\
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ff_vertical_compose_dd97iH0##ext(b0, b1, b2, b3, b4, width_align); \
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} \
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static void vertical_compose_haar##ext(uint8_t *_b0, uint8_t *_b1, int width) \
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{ \
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int i, width_align = width&~(align-1); \
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int16_t *b0 = (int16_t *)_b0; \
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int16_t *b1 = (int16_t *)_b1; \
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\
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for(i=width_align; i<width; i++) { \
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b0[i] = COMPOSE_HAARiL0(b0[i], b1[i]); \
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b1[i] = COMPOSE_HAARiH0(b1[i], b0[i]); \
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} \
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\
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ff_vertical_compose_haar##ext(b0, b1, width_align); \
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} \
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static void horizontal_compose_haar0i##ext(uint8_t *_b, uint8_t *_tmp, int w)\
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{\
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int w2= w>>1;\
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int x= w2 - (w2&(align-1));\
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int16_t *b = (int16_t *)_b; \
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int16_t *tmp = (int16_t *)_tmp; \
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\
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ff_horizontal_compose_haar0i##ext(b, tmp, w);\
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\
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for (; x < w2; x++) {\
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b[2*x ] = tmp[x];\
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b[2*x+1] = COMPOSE_HAARiH0(b[x+w2], tmp[x]);\
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}\
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}\
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static void horizontal_compose_haar1i##ext(uint8_t *_b, uint8_t *_tmp, int w)\
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{\
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int w2= w>>1;\
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int x= w2 - (w2&(align-1));\
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int16_t *b = (int16_t *)_b; \
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int16_t *tmp = (int16_t *)_tmp; \
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\
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ff_horizontal_compose_haar1i##ext(b, tmp, w);\
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\
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for (; x < w2; x++) {\
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b[2*x ] = (tmp[x] + 1)>>1;\
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b[2*x+1] = (COMPOSE_HAARiH0(b[x+w2], tmp[x]) + 1)>>1;\
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}\
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}\
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\
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#if HAVE_X86ASM
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COMPOSE_VERTICAL(_sse2, 8)
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void ff_horizontal_compose_dd97i_ssse3(int16_t *_b, int16_t *_tmp, int w);
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static void horizontal_compose_dd97i_ssse3(uint8_t *_b, uint8_t *_tmp, int w)
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{
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int w2= w>>1;
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int x= w2 - (w2&7);
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int16_t *b = (int16_t *)_b;
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int16_t *tmp = (int16_t *)_tmp;
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ff_horizontal_compose_dd97i_ssse3(b, tmp, w);
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for (; x < w2; x++) {
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b[2*x ] = (tmp[x] + 1)>>1;
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b[2*x+1] = (COMPOSE_DD97iH0(tmp[x-1], tmp[x], b[x+w2], tmp[x+1], tmp[x+2]) + 1)>>1;
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}
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}
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#endif
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void ff_spatial_idwt_init_x86(DWTContext *d, enum dwt_type type)
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{
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#if HAVE_X86ASM
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int mm_flags = av_get_cpu_flags();
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if (!(mm_flags & AV_CPU_FLAG_SSE2))
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return;
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switch (type) {
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case DWT_DIRAC_DD9_7:
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d->vertical_compose_l0.tap3 = vertical_compose53iL0_sse2;
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d->vertical_compose_h0.tap5 = vertical_compose_dd97iH0_sse2;
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break;
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case DWT_DIRAC_LEGALL5_3:
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d->vertical_compose_l0.tap3 = vertical_compose53iL0_sse2;
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d->vertical_compose_h0.tap3 = vertical_compose_dirac53iH0_sse2;
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break;
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case DWT_DIRAC_DD13_7:
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d->vertical_compose_l0.tap5 = vertical_compose_dd137iL0_sse2;
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d->vertical_compose_h0.tap5 = vertical_compose_dd97iH0_sse2;
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break;
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case DWT_DIRAC_HAAR0:
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d->vertical_compose = vertical_compose_haar_sse2;
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d->horizontal_compose = horizontal_compose_haar0i_sse2;
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break;
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case DWT_DIRAC_HAAR1:
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d->vertical_compose = vertical_compose_haar_sse2;
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d->horizontal_compose = horizontal_compose_haar1i_sse2;
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break;
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}
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if (!(mm_flags & AV_CPU_FLAG_SSSE3))
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return;
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switch (type) {
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case DWT_DIRAC_DD9_7:
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d->horizontal_compose = horizontal_compose_dd97i_ssse3;
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break;
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}
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#endif // HAVE_X86ASM
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}
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