diff options
Diffstat (limited to 'libavcodec/x86/xvididct_sse2.c')
| -rw-r--r-- | libavcodec/x86/xvididct_sse2.c | 406 |
1 files changed, 406 insertions, 0 deletions
diff --git a/libavcodec/x86/xvididct_sse2.c b/libavcodec/x86/xvididct_sse2.c new file mode 100644 index 0000000000..9a87df00b8 --- /dev/null +++ b/libavcodec/x86/xvididct_sse2.c @@ -0,0 +1,406 @@ +/* + * XVID MPEG-4 VIDEO CODEC + * - SSE2 inverse discrete cosine transform - + * + * Copyright(C) 2003 Pascal Massimino <skal@planet-d.net> + * + * Conversion to gcc syntax with modifications + * by Alexander Strange <astrange@ithinksw.com> + * + * Originally from dct/x86_asm/fdct_sse2_skal.asm in Xvid. + * + * This file is part of Libav. + * + * Vertical pass is an implementation of the scheme: + * Loeffler C., Ligtenberg A., and Moschytz C.S.: + * Practical Fast 1D DCT Algorithm with Eleven Multiplications, + * Proc. ICASSP 1989, 988-991. + * + * Horizontal pass is a double 4x4 vector/matrix multiplication, + * (see also Intel's Application Note 922: + * http://developer.intel.com/vtune/cbts/strmsimd/922down.htm + * Copyright (C) 1999 Intel Corporation) + * + * More details at http://skal.planet-d.net/coding/dct.html + * + * Libav 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. + * + * Libav 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 Libav; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "libavutil/internal.h" +#include "libavutil/mem.h" +#include "libavutil/x86/asm.h" + +#include "idctdsp.h" +#include "xvididct.h" + +#if HAVE_SSE2_INLINE + +/** + * @file + * @brief SSE2 IDCT compatible with the Xvid IDCT + */ + +#define X8(x) x,x,x,x,x,x,x,x + +DECLARE_ASM_CONST(16, int16_t, tan1)[] = {X8(13036)}; // tan( pi/16) +DECLARE_ASM_CONST(16, int16_t, tan2)[] = {X8(27146)}; // tan(2pi/16) = sqrt(2)-1 +DECLARE_ASM_CONST(16, int16_t, tan3)[] = {X8(43790)}; // tan(3pi/16)-1 +DECLARE_ASM_CONST(16, int16_t, sqrt2)[]= {X8(23170)}; // 0.5/sqrt(2) +DECLARE_ASM_CONST(8, uint8_t, m127)[] = {X8(127)}; + +DECLARE_ASM_CONST(16, int16_t, iTab1)[] = { + 0x4000, 0x539f, 0xc000, 0xac61, 0x4000, 0xdd5d, 0x4000, 0xdd5d, + 0x4000, 0x22a3, 0x4000, 0x22a3, 0xc000, 0x539f, 0x4000, 0xac61, + 0x3249, 0x11a8, 0x4b42, 0xee58, 0x11a8, 0x4b42, 0x11a8, 0xcdb7, + 0x58c5, 0x4b42, 0xa73b, 0xcdb7, 0x3249, 0xa73b, 0x4b42, 0xa73b +}; + +DECLARE_ASM_CONST(16, int16_t, iTab2)[] = { + 0x58c5, 0x73fc, 0xa73b, 0x8c04, 0x58c5, 0xcff5, 0x58c5, 0xcff5, + 0x58c5, 0x300b, 0x58c5, 0x300b, 0xa73b, 0x73fc, 0x58c5, 0x8c04, + 0x45bf, 0x187e, 0x6862, 0xe782, 0x187e, 0x6862, 0x187e, 0xba41, + 0x7b21, 0x6862, 0x84df, 0xba41, 0x45bf, 0x84df, 0x6862, 0x84df +}; + +DECLARE_ASM_CONST(16, int16_t, iTab3)[] = { + 0x539f, 0x6d41, 0xac61, 0x92bf, 0x539f, 0xd2bf, 0x539f, 0xd2bf, + 0x539f, 0x2d41, 0x539f, 0x2d41, 0xac61, 0x6d41, 0x539f, 0x92bf, + 0x41b3, 0x1712, 0x6254, 0xe8ee, 0x1712, 0x6254, 0x1712, 0xbe4d, + 0x73fc, 0x6254, 0x8c04, 0xbe4d, 0x41b3, 0x8c04, 0x6254, 0x8c04 +}; + +DECLARE_ASM_CONST(16, int16_t, iTab4)[] = { + 0x4b42, 0x6254, 0xb4be, 0x9dac, 0x4b42, 0xd746, 0x4b42, 0xd746, + 0x4b42, 0x28ba, 0x4b42, 0x28ba, 0xb4be, 0x6254, 0x4b42, 0x9dac, + 0x3b21, 0x14c3, 0x587e, 0xeb3d, 0x14c3, 0x587e, 0x14c3, 0xc4df, + 0x6862, 0x587e, 0x979e, 0xc4df, 0x3b21, 0x979e, 0x587e, 0x979e +}; + +DECLARE_ASM_CONST(16, int32_t, walkenIdctRounders)[] = { + 65536, 65536, 65536, 65536, + 3597, 3597, 3597, 3597, + 2260, 2260, 2260, 2260, + 1203, 1203, 1203, 1203, + 120, 120, 120, 120, + 512, 512, 512, 512 +}; + +// Temporary storage before the column pass +#define ROW1 "%%xmm6" +#define ROW3 "%%xmm4" +#define ROW5 "%%xmm5" +#define ROW7 "%%xmm7" + +#define CLEAR_ODD(r) "pxor "r","r" \n\t" +#define PUT_ODD(dst) "pshufhw $0x1B, %%xmm2, "dst" \n\t" + +#if ARCH_X86_64 + +# define ROW0 "%%xmm8" +# define REG0 ROW0 +# define ROW2 "%%xmm9" +# define REG2 ROW2 +# define ROW4 "%%xmm10" +# define REG4 ROW4 +# define ROW6 "%%xmm11" +# define REG6 ROW6 +# define CLEAR_EVEN(r) CLEAR_ODD(r) +# define PUT_EVEN(dst) PUT_ODD(dst) +# define XMMS "%%xmm12" +# define MOV_32_ONLY "#" +# define SREG2 REG2 +# define TAN3 "%%xmm13" +# define TAN1 "%%xmm14" + +#else + +# define ROW0 "(%0)" +# define REG0 "%%xmm4" +# define ROW2 "2*16(%0)" +# define REG2 "%%xmm4" +# define ROW4 "4*16(%0)" +# define REG4 "%%xmm6" +# define ROW6 "6*16(%0)" +# define REG6 "%%xmm6" +# define CLEAR_EVEN(r) +# define PUT_EVEN(dst) \ + "pshufhw $0x1B, %%xmm2, %%xmm2 \n\t" \ + "movdqa %%xmm2, "dst" \n\t" +# define XMMS "%%xmm2" +# define MOV_32_ONLY "movdqa " +# define SREG2 "%%xmm7" +# define TAN3 "%%xmm0" +# define TAN1 "%%xmm2" + +#endif + +#define ROUND(x) "paddd "MANGLE(x) + +#define JZ(reg, to) \ + "testl "reg","reg" \n\t" \ + "jz "to" \n\t" + +#define JNZ(reg, to) \ + "testl "reg","reg" \n\t" \ + "jnz "to" \n\t" + +#define TEST_ONE_ROW(src, reg, clear) \ + clear \ + "movq "src", %%mm1 \n\t" \ + "por 8+"src", %%mm1 \n\t" \ + "paddusb %%mm0, %%mm1 \n\t" \ + "pmovmskb %%mm1, "reg" \n\t" + +#define TEST_TWO_ROWS(row1, row2, reg1, reg2, clear1, clear2) \ + clear1 \ + clear2 \ + "movq "row1", %%mm1 \n\t" \ + "por 8+"row1", %%mm1 \n\t" \ + "movq "row2", %%mm2 \n\t" \ + "por 8+"row2", %%mm2 \n\t" \ + "paddusb %%mm0, %%mm1 \n\t" \ + "paddusb %%mm0, %%mm2 \n\t" \ + "pmovmskb %%mm1, "reg1" \n\t" \ + "pmovmskb %%mm2, "reg2" \n\t" + +///IDCT pass on rows. +#define iMTX_MULT(src, table, rounder, put) \ + "movdqa "src", %%xmm3 \n\t" \ + "movdqa %%xmm3, %%xmm0 \n\t" \ + "pshufd $0x11, %%xmm3, %%xmm1 \n\t" /* 4602 */ \ + "punpcklqdq %%xmm0, %%xmm0 \n\t" /* 0246 */ \ + "pmaddwd "table", %%xmm0 \n\t" \ + "pmaddwd 16+"table", %%xmm1 \n\t" \ + "pshufd $0xBB, %%xmm3, %%xmm2 \n\t" /* 5713 */ \ + "punpckhqdq %%xmm3, %%xmm3 \n\t" /* 1357 */ \ + "pmaddwd 32+"table", %%xmm2 \n\t" \ + "pmaddwd 48+"table", %%xmm3 \n\t" \ + "paddd %%xmm1, %%xmm0 \n\t" \ + "paddd %%xmm3, %%xmm2 \n\t" \ + rounder", %%xmm0 \n\t" \ + "movdqa %%xmm2, %%xmm3 \n\t" \ + "paddd %%xmm0, %%xmm2 \n\t" \ + "psubd %%xmm3, %%xmm0 \n\t" \ + "psrad $11, %%xmm2 \n\t" \ + "psrad $11, %%xmm0 \n\t" \ + "packssdw %%xmm0, %%xmm2 \n\t" \ + put \ + "1: \n\t" + +#define iLLM_HEAD \ + "movdqa "MANGLE(tan3)", "TAN3" \n\t" \ + "movdqa "MANGLE(tan1)", "TAN1" \n\t" \ + +///IDCT pass on columns. +#define iLLM_PASS(dct) \ + "movdqa "TAN3", %%xmm1 \n\t" \ + "movdqa "TAN1", %%xmm3 \n\t" \ + "pmulhw %%xmm4, "TAN3" \n\t" \ + "pmulhw %%xmm5, %%xmm1 \n\t" \ + "paddsw %%xmm4, "TAN3" \n\t" \ + "paddsw %%xmm5, %%xmm1 \n\t" \ + "psubsw %%xmm5, "TAN3" \n\t" \ + "paddsw %%xmm4, %%xmm1 \n\t" \ + "pmulhw %%xmm7, %%xmm3 \n\t" \ + "pmulhw %%xmm6, "TAN1" \n\t" \ + "paddsw %%xmm6, %%xmm3 \n\t" \ + "psubsw %%xmm7, "TAN1" \n\t" \ + "movdqa %%xmm3, %%xmm7 \n\t" \ + "movdqa "TAN1", %%xmm6 \n\t" \ + "psubsw %%xmm1, %%xmm3 \n\t" \ + "psubsw "TAN3", "TAN1" \n\t" \ + "paddsw %%xmm7, %%xmm1 \n\t" \ + "paddsw %%xmm6, "TAN3" \n\t" \ + "movdqa %%xmm3, %%xmm6 \n\t" \ + "psubsw "TAN3", %%xmm3 \n\t" \ + "paddsw %%xmm6, "TAN3" \n\t" \ + "movdqa "MANGLE(sqrt2)", %%xmm4 \n\t" \ + "pmulhw %%xmm4, %%xmm3 \n\t" \ + "pmulhw %%xmm4, "TAN3" \n\t" \ + "paddsw "TAN3", "TAN3" \n\t" \ + "paddsw %%xmm3, %%xmm3 \n\t" \ + "movdqa "MANGLE(tan2)", %%xmm7 \n\t" \ + MOV_32_ONLY ROW2", "REG2" \n\t" \ + MOV_32_ONLY ROW6", "REG6" \n\t" \ + "movdqa %%xmm7, %%xmm5 \n\t" \ + "pmulhw "REG6", %%xmm7 \n\t" \ + "pmulhw "REG2", %%xmm5 \n\t" \ + "paddsw "REG2", %%xmm7 \n\t" \ + "psubsw "REG6", %%xmm5 \n\t" \ + MOV_32_ONLY ROW0", "REG0" \n\t" \ + MOV_32_ONLY ROW4", "REG4" \n\t" \ + MOV_32_ONLY" "TAN1", (%0) \n\t" \ + "movdqa "REG0", "XMMS" \n\t" \ + "psubsw "REG4", "REG0" \n\t" \ + "paddsw "XMMS", "REG4" \n\t" \ + "movdqa "REG4", "XMMS" \n\t" \ + "psubsw %%xmm7, "REG4" \n\t" \ + "paddsw "XMMS", %%xmm7 \n\t" \ + "movdqa "REG0", "XMMS" \n\t" \ + "psubsw %%xmm5, "REG0" \n\t" \ + "paddsw "XMMS", %%xmm5 \n\t" \ + "movdqa %%xmm5, "XMMS" \n\t" \ + "psubsw "TAN3", %%xmm5 \n\t" \ + "paddsw "XMMS", "TAN3" \n\t" \ + "movdqa "REG0", "XMMS" \n\t" \ + "psubsw %%xmm3, "REG0" \n\t" \ + "paddsw "XMMS", %%xmm3 \n\t" \ + MOV_32_ONLY" (%0), "TAN1" \n\t" \ + "psraw $6, %%xmm5 \n\t" \ + "psraw $6, "REG0" \n\t" \ + "psraw $6, "TAN3" \n\t" \ + "psraw $6, %%xmm3 \n\t" \ + "movdqa "TAN3", 1*16("dct") \n\t" \ + "movdqa %%xmm3, 2*16("dct") \n\t" \ + "movdqa "REG0", 5*16("dct") \n\t" \ + "movdqa %%xmm5, 6*16("dct") \n\t" \ + "movdqa %%xmm7, %%xmm0 \n\t" \ + "movdqa "REG4", %%xmm4 \n\t" \ + "psubsw %%xmm1, %%xmm7 \n\t" \ + "psubsw "TAN1", "REG4" \n\t" \ + "paddsw %%xmm0, %%xmm1 \n\t" \ + "paddsw %%xmm4, "TAN1" \n\t" \ + "psraw $6, %%xmm1 \n\t" \ + "psraw $6, %%xmm7 \n\t" \ + "psraw $6, "TAN1" \n\t" \ + "psraw $6, "REG4" \n\t" \ + "movdqa %%xmm1, ("dct") \n\t" \ + "movdqa "TAN1", 3*16("dct") \n\t" \ + "movdqa "REG4", 4*16("dct") \n\t" \ + "movdqa %%xmm7, 7*16("dct") \n\t" + +///IDCT pass on columns, assuming rows 4-7 are zero. +#define iLLM_PASS_SPARSE(dct) \ + "pmulhw %%xmm4, "TAN3" \n\t" \ + "paddsw %%xmm4, "TAN3" \n\t" \ + "movdqa %%xmm6, %%xmm3 \n\t" \ + "pmulhw %%xmm6, "TAN1" \n\t" \ + "movdqa %%xmm4, %%xmm1 \n\t" \ + "psubsw %%xmm1, %%xmm3 \n\t" \ + "paddsw %%xmm6, %%xmm1 \n\t" \ + "movdqa "TAN1", %%xmm6 \n\t" \ + "psubsw "TAN3", "TAN1" \n\t" \ + "paddsw %%xmm6, "TAN3" \n\t" \ + "movdqa %%xmm3, %%xmm6 \n\t" \ + "psubsw "TAN3", %%xmm3 \n\t" \ + "paddsw %%xmm6, "TAN3" \n\t" \ + "movdqa "MANGLE(sqrt2)", %%xmm4 \n\t" \ + "pmulhw %%xmm4, %%xmm3 \n\t" \ + "pmulhw %%xmm4, "TAN3" \n\t" \ + "paddsw "TAN3", "TAN3" \n\t" \ + "paddsw %%xmm3, %%xmm3 \n\t" \ + "movdqa "MANGLE(tan2)", %%xmm5 \n\t" \ + MOV_32_ONLY ROW2", "SREG2" \n\t" \ + "pmulhw "SREG2", %%xmm5 \n\t" \ + MOV_32_ONLY ROW0", "REG0" \n\t" \ + "movdqa "REG0", %%xmm6 \n\t" \ + "psubsw "SREG2", %%xmm6 \n\t" \ + "paddsw "REG0", "SREG2" \n\t" \ + MOV_32_ONLY" "TAN1", (%0) \n\t" \ + "movdqa "REG0", "XMMS" \n\t" \ + "psubsw %%xmm5, "REG0" \n\t" \ + "paddsw "XMMS", %%xmm5 \n\t" \ + "movdqa %%xmm5, "XMMS" \n\t" \ + "psubsw "TAN3", %%xmm5 \n\t" \ + "paddsw "XMMS", "TAN3" \n\t" \ + "movdqa "REG0", "XMMS" \n\t" \ + "psubsw %%xmm3, "REG0" \n\t" \ + "paddsw "XMMS", %%xmm3 \n\t" \ + MOV_32_ONLY" (%0), "TAN1" \n\t" \ + "psraw $6, %%xmm5 \n\t" \ + "psraw $6, "REG0" \n\t" \ + "psraw $6, "TAN3" \n\t" \ + "psraw $6, %%xmm3 \n\t" \ + "movdqa "TAN3", 1*16("dct") \n\t" \ + "movdqa %%xmm3, 2*16("dct") \n\t" \ + "movdqa "REG0", 5*16("dct") \n\t" \ + "movdqa %%xmm5, 6*16("dct") \n\t" \ + "movdqa "SREG2", %%xmm0 \n\t" \ + "movdqa %%xmm6, %%xmm4 \n\t" \ + "psubsw %%xmm1, "SREG2" \n\t" \ + "psubsw "TAN1", %%xmm6 \n\t" \ + "paddsw %%xmm0, %%xmm1 \n\t" \ + "paddsw %%xmm4, "TAN1" \n\t" \ + "psraw $6, %%xmm1 \n\t" \ + "psraw $6, "SREG2" \n\t" \ + "psraw $6, "TAN1" \n\t" \ + "psraw $6, %%xmm6 \n\t" \ + "movdqa %%xmm1, ("dct") \n\t" \ + "movdqa "TAN1", 3*16("dct") \n\t" \ + "movdqa %%xmm6, 4*16("dct") \n\t" \ + "movdqa "SREG2", 7*16("dct") \n\t" + +inline void ff_xvid_idct_sse2(short *block) +{ + __asm__ volatile( + "movq "MANGLE(m127)", %%mm0 \n\t" + iMTX_MULT("(%0)", MANGLE(iTab1), ROUND(walkenIdctRounders), PUT_EVEN(ROW0)) + iMTX_MULT("1*16(%0)", MANGLE(iTab2), ROUND(walkenIdctRounders+1*16), PUT_ODD(ROW1)) + iMTX_MULT("2*16(%0)", MANGLE(iTab3), ROUND(walkenIdctRounders+2*16), PUT_EVEN(ROW2)) + + TEST_TWO_ROWS("3*16(%0)", "4*16(%0)", "%%eax", "%%ecx", CLEAR_ODD(ROW3), CLEAR_EVEN(ROW4)) + JZ("%%eax", "1f") + iMTX_MULT("3*16(%0)", MANGLE(iTab4), ROUND(walkenIdctRounders+3*16), PUT_ODD(ROW3)) + + TEST_TWO_ROWS("5*16(%0)", "6*16(%0)", "%%eax", "%%edx", CLEAR_ODD(ROW5), CLEAR_EVEN(ROW6)) + TEST_ONE_ROW("7*16(%0)", "%%esi", CLEAR_ODD(ROW7)) + iLLM_HEAD + ".p2align 4 \n\t" + JNZ("%%ecx", "2f") + JNZ("%%eax", "3f") + JNZ("%%edx", "4f") + JNZ("%%esi", "5f") + iLLM_PASS_SPARSE("%0") + "jmp 6f \n\t" + "2: \n\t" + iMTX_MULT("4*16(%0)", MANGLE(iTab1), "#", PUT_EVEN(ROW4)) + "3: \n\t" + iMTX_MULT("5*16(%0)", MANGLE(iTab4), ROUND(walkenIdctRounders+4*16), PUT_ODD(ROW5)) + JZ("%%edx", "1f") + "4: \n\t" + iMTX_MULT("6*16(%0)", MANGLE(iTab3), ROUND(walkenIdctRounders+5*16), PUT_EVEN(ROW6)) + JZ("%%esi", "1f") + "5: \n\t" + iMTX_MULT("7*16(%0)", MANGLE(iTab2), ROUND(walkenIdctRounders+5*16), PUT_ODD(ROW7)) +#if ARCH_X86_32 + iLLM_HEAD +#endif + iLLM_PASS("%0") + "6: \n\t" + : "+r"(block) + : + : XMM_CLOBBERS("%xmm0" , "%xmm1" , "%xmm2" , "%xmm3" , + "%xmm4" , "%xmm5" , "%xmm6" , "%xmm7" ,) +#if ARCH_X86_64 + XMM_CLOBBERS("%xmm8" , "%xmm9" , "%xmm10", "%xmm11", + "%xmm12", "%xmm13", "%xmm14",) +#endif + "%eax", "%ecx", "%edx", "%esi", "memory" + ); +} + +void ff_xvid_idct_sse2_put(uint8_t *dest, int line_size, short *block) +{ + ff_xvid_idct_sse2(block); + ff_put_pixels_clamped_mmx(block, dest, line_size); +} + +void ff_xvid_idct_sse2_add(uint8_t *dest, int line_size, short *block) +{ + ff_xvid_idct_sse2(block); + ff_add_pixels_clamped_mmx(block, dest, line_size); +} + +#endif /* HAVE_SSE2_INLINE */ |