ffmpeg / libavcodec / i386 / mpegvideo_mmx_template.c @ 755bfeab
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/*
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* MPEG video MMX templates
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*
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* Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
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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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#undef MMREG_WIDTH
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#undef MM
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#undef MOVQ
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#undef SPREADW
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#undef PMAXW
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#undef PMAX
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#undef SAVE_SIGN
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#undef RESTORE_SIGN
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#if defined(HAVE_SSE2)
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#define MMREG_WIDTH "16" |
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#define MM "%%xmm" |
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#define MOVQ "movdqa" |
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#define SPREADW(a) \
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"pshuflw $0, "a", "a" \n\t"\ |
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"punpcklwd "a", "a" \n\t" |
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#define PMAXW(a,b) "pmaxsw "a", "b" \n\t" |
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#define PMAX(a,b) \
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"movhlps "a", "b" \n\t"\ |
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PMAXW(b, a)\ |
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"pshuflw $0x0E, "a", "b" \n\t"\ |
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PMAXW(b, a)\ |
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"pshuflw $0x01, "a", "b" \n\t"\ |
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PMAXW(b, a) |
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#else
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#define MMREG_WIDTH "8" |
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#define MM "%%mm" |
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#define MOVQ "movq" |
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#if defined(HAVE_MMX2)
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#define SPREADW(a) "pshufw $0, "a", "a" \n\t" |
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#define PMAXW(a,b) "pmaxsw "a", "b" \n\t" |
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#define PMAX(a,b) \
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"pshufw $0x0E, "a", "b" \n\t"\ |
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PMAXW(b, a)\ |
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"pshufw $0x01, "a", "b" \n\t"\ |
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PMAXW(b, a) |
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#else
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#define SPREADW(a) \
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"punpcklwd "a", "a" \n\t"\ |
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"punpcklwd "a", "a" \n\t" |
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#define PMAXW(a,b) \
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"psubusw "a", "b" \n\t"\ |
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"paddw "a", "b" \n\t" |
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#define PMAX(a,b) \
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"movq "a", "b" \n\t"\ |
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"psrlq $32, "a" \n\t"\ |
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PMAXW(b, a)\ |
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"movq "a", "b" \n\t"\ |
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"psrlq $16, "a" \n\t"\ |
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PMAXW(b, a) |
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#endif
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#endif
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#ifdef HAVE_SSSE3
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#define SAVE_SIGN(a,b) \
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"movdqa "b", "a" \n\t"\ |
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"pabsw "b", "b" \n\t" |
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#define RESTORE_SIGN(a,b) \
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"psignw "a", "b" \n\t" |
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#else
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#define SAVE_SIGN(a,b) \
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"pxor "a", "a" \n\t"\ |
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"pcmpgtw "b", "a" \n\t" /* block[i] <= 0 ? 0xFF : 0x00 */\ |
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"pxor "a", "b" \n\t"\ |
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"psubw "a", "b" \n\t" /* ABS(block[i]) */ |
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#define RESTORE_SIGN(a,b) \
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"pxor "a", "b" \n\t"\ |
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"psubw "a", "b" \n\t" // out=((ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16)*sign(block[i]) |
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#endif
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static int RENAME(dct_quantize)(MpegEncContext *s, |
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DCTELEM *block, int n,
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int qscale, int *overflow) |
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{
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long last_non_zero_p1;
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int level=0, q; //=0 is cuz gcc says uninitalized ... |
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const uint16_t *qmat, *bias;
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DECLARE_ALIGNED_16(int16_t, temp_block[64]);
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assert((7&(int)(&temp_block[0])) == 0); //did gcc align it correctly? |
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//s->fdct (block);
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RENAMEl(ff_fdct) (block); //cannot be anything else ...
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if(s->dct_error_sum)
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s->denoise_dct(s, block); |
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if (s->mb_intra) {
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int dummy;
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if (n < 4) |
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q = s->y_dc_scale; |
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else
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q = s->c_dc_scale; |
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/* note: block[0] is assumed to be positive */
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if (!s->h263_aic) {
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#if 1 |
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asm volatile ( |
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"mul %%ecx \n\t"
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: "=d" (level), "=a"(dummy) |
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: "a" ((block[0]>>2) + q), "c" (ff_inverse[q<<1]) |
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); |
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#else
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asm volatile ( |
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"xorl %%edx, %%edx \n\t"
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"divw %%cx \n\t"
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"movzwl %%ax, %%eax \n\t"
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: "=a" (level)
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: "a" ((block[0]>>2) + q), "c" (q<<1) |
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: "%edx"
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); |
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#endif
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} else
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/* For AIC we skip quant/dequant of INTRADC */
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level = (block[0] + 4)>>3; |
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block[0]=0; //avoid fake overflow |
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// temp_block[0] = (block[0] + (q >> 1)) / q;
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last_non_zero_p1 = 1;
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bias = s->q_intra_matrix16[qscale][1];
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qmat = s->q_intra_matrix16[qscale][0];
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} else {
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last_non_zero_p1 = 0;
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bias = s->q_inter_matrix16[qscale][1];
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qmat = s->q_inter_matrix16[qscale][0];
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} |
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if((s->out_format == FMT_H263 || s->out_format == FMT_H261) && s->mpeg_quant==0){ |
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asm volatile( |
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"movd %%"REG_a", "MM"3 \n\t" // last_non_zero_p1 |
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SPREADW(MM"3")
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"pxor "MM"7, "MM"7 \n\t" // 0 |
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"pxor "MM"4, "MM"4 \n\t" // 0 |
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MOVQ" (%2), "MM"5 \n\t" // qmat[0] |
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"pxor "MM"6, "MM"6 \n\t" |
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"psubw (%3), "MM"6 \n\t" // -bias[0] |
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"mov $-128, %%"REG_a" \n\t" |
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ASMALIGN(4)
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"1: \n\t"
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MOVQ" (%1, %%"REG_a"), "MM"0 \n\t" // block[i] |
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SAVE_SIGN(MM"1", MM"0") // ABS(block[i]) |
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"psubusw "MM"6, "MM"0 \n\t" // ABS(block[i]) + bias[0] |
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"pmulhw "MM"5, "MM"0 \n\t" // (ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16 |
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"por "MM"0, "MM"4 \n\t" |
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RESTORE_SIGN(MM"1", MM"0") // out=((ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16)*sign(block[i]) |
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MOVQ" "MM"0, (%5, %%"REG_a") \n\t" |
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"pcmpeqw "MM"7, "MM"0 \n\t" // out==0 ? 0xFF : 0x00 |
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MOVQ" (%4, %%"REG_a"), "MM"1 \n\t" |
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MOVQ" "MM"7, (%1, %%"REG_a") \n\t" // 0 |
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"pandn "MM"1, "MM"0 \n\t" |
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PMAXW(MM"0", MM"3") |
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"add $"MMREG_WIDTH", %%"REG_a" \n\t" |
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" js 1b \n\t"
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PMAX(MM"3", MM"0") |
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"movd "MM"3, %%"REG_a" \n\t" |
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"movzb %%al, %%"REG_a" \n\t" // last_non_zero_p1 |
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: "+a" (last_non_zero_p1)
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: "r" (block+64), "r" (qmat), "r" (bias), |
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"r" (inv_zigzag_direct16+64), "r" (temp_block+64) |
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); |
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}else{ // FMT_H263 |
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asm volatile( |
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"movd %%"REG_a", "MM"3 \n\t" // last_non_zero_p1 |
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SPREADW(MM"3")
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"pxor "MM"7, "MM"7 \n\t" // 0 |
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"pxor "MM"4, "MM"4 \n\t" // 0 |
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"mov $-128, %%"REG_a" \n\t" |
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ASMALIGN(4)
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"1: \n\t"
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MOVQ" (%1, %%"REG_a"), "MM"0 \n\t" // block[i] |
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SAVE_SIGN(MM"1", MM"0") // ABS(block[i]) |
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MOVQ" (%3, %%"REG_a"), "MM"6 \n\t" // bias[0] |
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"paddusw "MM"6, "MM"0 \n\t" // ABS(block[i]) + bias[0] |
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MOVQ" (%2, %%"REG_a"), "MM"5 \n\t" // qmat[i] |
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"pmulhw "MM"5, "MM"0 \n\t" // (ABS(block[i])*qmat[0] + bias[0]*qmat[0])>>16 |
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"por "MM"0, "MM"4 \n\t" |
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RESTORE_SIGN(MM"1", MM"0") // out=((ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16)*sign(block[i]) |
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MOVQ" "MM"0, (%5, %%"REG_a") \n\t" |
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"pcmpeqw "MM"7, "MM"0 \n\t" // out==0 ? 0xFF : 0x00 |
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MOVQ" (%4, %%"REG_a"), "MM"1 \n\t" |
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MOVQ" "MM"7, (%1, %%"REG_a") \n\t" // 0 |
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"pandn "MM"1, "MM"0 \n\t" |
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PMAXW(MM"0", MM"3") |
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"add $"MMREG_WIDTH", %%"REG_a" \n\t" |
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" js 1b \n\t"
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PMAX(MM"3", MM"0") |
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"movd "MM"3, %%"REG_a" \n\t" |
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"movzb %%al, %%"REG_a" \n\t" // last_non_zero_p1 |
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: "+a" (last_non_zero_p1)
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: "r" (block+64), "r" (qmat+64), "r" (bias+64), |
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"r" (inv_zigzag_direct16+64), "r" (temp_block+64) |
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); |
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} |
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asm volatile( |
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"movd %1, "MM"1 \n\t" // max_qcoeff |
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SPREADW(MM"1")
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"psubusw "MM"1, "MM"4 \n\t" |
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"packuswb "MM"4, "MM"4 \n\t" |
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#ifdef HAVE_SSE2
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"packuswb "MM"4, "MM"4 \n\t" |
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#endif
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"movd "MM"4, %0 \n\t" // *overflow |
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: "=g" (*overflow)
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: "g" (s->max_qcoeff)
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); |
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if(s->mb_intra) block[0]= level; |
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else block[0]= temp_block[0]; |
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if(s->dsp.idct_permutation_type == FF_SIMPLE_IDCT_PERM){
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if(last_non_zero_p1 <= 1) goto end; |
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block[0x08] = temp_block[0x01]; block[0x10] = temp_block[0x08]; |
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block[0x20] = temp_block[0x10]; |
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if(last_non_zero_p1 <= 4) goto end; |
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block[0x18] = temp_block[0x09]; block[0x04] = temp_block[0x02]; |
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block[0x09] = temp_block[0x03]; |
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if(last_non_zero_p1 <= 7) goto end; |
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block[0x14] = temp_block[0x0A]; block[0x28] = temp_block[0x11]; |
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block[0x12] = temp_block[0x18]; block[0x02] = temp_block[0x20]; |
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if(last_non_zero_p1 <= 11) goto end; |
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block[0x1A] = temp_block[0x19]; block[0x24] = temp_block[0x12]; |
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block[0x19] = temp_block[0x0B]; block[0x01] = temp_block[0x04]; |
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block[0x0C] = temp_block[0x05]; |
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if(last_non_zero_p1 <= 16) goto end; |
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block[0x11] = temp_block[0x0C]; block[0x29] = temp_block[0x13]; |
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block[0x16] = temp_block[0x1A]; block[0x0A] = temp_block[0x21]; |
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block[0x30] = temp_block[0x28]; block[0x22] = temp_block[0x30]; |
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block[0x38] = temp_block[0x29]; block[0x06] = temp_block[0x22]; |
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if(last_non_zero_p1 <= 24) goto end; |
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block[0x1B] = temp_block[0x1B]; block[0x21] = temp_block[0x14]; |
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block[0x1C] = temp_block[0x0D]; block[0x05] = temp_block[0x06]; |
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block[0x0D] = temp_block[0x07]; block[0x15] = temp_block[0x0E]; |
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block[0x2C] = temp_block[0x15]; block[0x13] = temp_block[0x1C]; |
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if(last_non_zero_p1 <= 32) goto end; |
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block[0x0B] = temp_block[0x23]; block[0x34] = temp_block[0x2A]; |
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block[0x2A] = temp_block[0x31]; block[0x32] = temp_block[0x38]; |
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block[0x3A] = temp_block[0x39]; block[0x26] = temp_block[0x32]; |
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block[0x39] = temp_block[0x2B]; block[0x03] = temp_block[0x24]; |
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if(last_non_zero_p1 <= 40) goto end; |
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block[0x1E] = temp_block[0x1D]; block[0x25] = temp_block[0x16]; |
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block[0x1D] = temp_block[0x0F]; block[0x2D] = temp_block[0x17]; |
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block[0x17] = temp_block[0x1E]; block[0x0E] = temp_block[0x25]; |
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block[0x31] = temp_block[0x2C]; block[0x2B] = temp_block[0x33]; |
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if(last_non_zero_p1 <= 48) goto end; |
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block[0x36] = temp_block[0x3A]; block[0x3B] = temp_block[0x3B]; |
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block[0x23] = temp_block[0x34]; block[0x3C] = temp_block[0x2D]; |
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block[0x07] = temp_block[0x26]; block[0x1F] = temp_block[0x1F]; |
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block[0x0F] = temp_block[0x27]; block[0x35] = temp_block[0x2E]; |
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if(last_non_zero_p1 <= 56) goto end; |
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block[0x2E] = temp_block[0x35]; block[0x33] = temp_block[0x3C]; |
| 274 |
block[0x3E] = temp_block[0x3D]; block[0x27] = temp_block[0x36]; |
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block[0x3D] = temp_block[0x2F]; block[0x2F] = temp_block[0x37]; |
| 276 |
block[0x37] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F]; |
| 277 |
}else if(s->dsp.idct_permutation_type == FF_LIBMPEG2_IDCT_PERM){ |
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if(last_non_zero_p1 <= 1) goto end; |
| 279 |
block[0x04] = temp_block[0x01]; |
| 280 |
block[0x08] = temp_block[0x08]; block[0x10] = temp_block[0x10]; |
| 281 |
if(last_non_zero_p1 <= 4) goto end; |
| 282 |
block[0x0C] = temp_block[0x09]; block[0x01] = temp_block[0x02]; |
| 283 |
block[0x05] = temp_block[0x03]; |
| 284 |
if(last_non_zero_p1 <= 7) goto end; |
| 285 |
block[0x09] = temp_block[0x0A]; block[0x14] = temp_block[0x11]; |
| 286 |
block[0x18] = temp_block[0x18]; block[0x20] = temp_block[0x20]; |
| 287 |
if(last_non_zero_p1 <= 11) goto end; |
| 288 |
block[0x1C] = temp_block[0x19]; |
| 289 |
block[0x11] = temp_block[0x12]; block[0x0D] = temp_block[0x0B]; |
| 290 |
block[0x02] = temp_block[0x04]; block[0x06] = temp_block[0x05]; |
| 291 |
if(last_non_zero_p1 <= 16) goto end; |
| 292 |
block[0x0A] = temp_block[0x0C]; block[0x15] = temp_block[0x13]; |
| 293 |
block[0x19] = temp_block[0x1A]; block[0x24] = temp_block[0x21]; |
| 294 |
block[0x28] = temp_block[0x28]; block[0x30] = temp_block[0x30]; |
| 295 |
block[0x2C] = temp_block[0x29]; block[0x21] = temp_block[0x22]; |
| 296 |
if(last_non_zero_p1 <= 24) goto end; |
| 297 |
block[0x1D] = temp_block[0x1B]; block[0x12] = temp_block[0x14]; |
| 298 |
block[0x0E] = temp_block[0x0D]; block[0x03] = temp_block[0x06]; |
| 299 |
block[0x07] = temp_block[0x07]; block[0x0B] = temp_block[0x0E]; |
| 300 |
block[0x16] = temp_block[0x15]; block[0x1A] = temp_block[0x1C]; |
| 301 |
if(last_non_zero_p1 <= 32) goto end; |
| 302 |
block[0x25] = temp_block[0x23]; block[0x29] = temp_block[0x2A]; |
| 303 |
block[0x34] = temp_block[0x31]; block[0x38] = temp_block[0x38]; |
| 304 |
block[0x3C] = temp_block[0x39]; block[0x31] = temp_block[0x32]; |
| 305 |
block[0x2D] = temp_block[0x2B]; block[0x22] = temp_block[0x24]; |
| 306 |
if(last_non_zero_p1 <= 40) goto end; |
| 307 |
block[0x1E] = temp_block[0x1D]; block[0x13] = temp_block[0x16]; |
| 308 |
block[0x0F] = temp_block[0x0F]; block[0x17] = temp_block[0x17]; |
| 309 |
block[0x1B] = temp_block[0x1E]; block[0x26] = temp_block[0x25]; |
| 310 |
block[0x2A] = temp_block[0x2C]; block[0x35] = temp_block[0x33]; |
| 311 |
if(last_non_zero_p1 <= 48) goto end; |
| 312 |
block[0x39] = temp_block[0x3A]; block[0x3D] = temp_block[0x3B]; |
| 313 |
block[0x32] = temp_block[0x34]; block[0x2E] = temp_block[0x2D]; |
| 314 |
block[0x23] = temp_block[0x26]; block[0x1F] = temp_block[0x1F]; |
| 315 |
block[0x27] = temp_block[0x27]; block[0x2B] = temp_block[0x2E]; |
| 316 |
if(last_non_zero_p1 <= 56) goto end; |
| 317 |
block[0x36] = temp_block[0x35]; block[0x3A] = temp_block[0x3C]; |
| 318 |
block[0x3E] = temp_block[0x3D]; block[0x33] = temp_block[0x36]; |
| 319 |
block[0x2F] = temp_block[0x2F]; block[0x37] = temp_block[0x37]; |
| 320 |
block[0x3B] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F]; |
| 321 |
}else{
|
| 322 |
if(last_non_zero_p1 <= 1) goto end; |
| 323 |
block[0x01] = temp_block[0x01]; |
| 324 |
block[0x08] = temp_block[0x08]; block[0x10] = temp_block[0x10]; |
| 325 |
if(last_non_zero_p1 <= 4) goto end; |
| 326 |
block[0x09] = temp_block[0x09]; block[0x02] = temp_block[0x02]; |
| 327 |
block[0x03] = temp_block[0x03]; |
| 328 |
if(last_non_zero_p1 <= 7) goto end; |
| 329 |
block[0x0A] = temp_block[0x0A]; block[0x11] = temp_block[0x11]; |
| 330 |
block[0x18] = temp_block[0x18]; block[0x20] = temp_block[0x20]; |
| 331 |
if(last_non_zero_p1 <= 11) goto end; |
| 332 |
block[0x19] = temp_block[0x19]; |
| 333 |
block[0x12] = temp_block[0x12]; block[0x0B] = temp_block[0x0B]; |
| 334 |
block[0x04] = temp_block[0x04]; block[0x05] = temp_block[0x05]; |
| 335 |
if(last_non_zero_p1 <= 16) goto end; |
| 336 |
block[0x0C] = temp_block[0x0C]; block[0x13] = temp_block[0x13]; |
| 337 |
block[0x1A] = temp_block[0x1A]; block[0x21] = temp_block[0x21]; |
| 338 |
block[0x28] = temp_block[0x28]; block[0x30] = temp_block[0x30]; |
| 339 |
block[0x29] = temp_block[0x29]; block[0x22] = temp_block[0x22]; |
| 340 |
if(last_non_zero_p1 <= 24) goto end; |
| 341 |
block[0x1B] = temp_block[0x1B]; block[0x14] = temp_block[0x14]; |
| 342 |
block[0x0D] = temp_block[0x0D]; block[0x06] = temp_block[0x06]; |
| 343 |
block[0x07] = temp_block[0x07]; block[0x0E] = temp_block[0x0E]; |
| 344 |
block[0x15] = temp_block[0x15]; block[0x1C] = temp_block[0x1C]; |
| 345 |
if(last_non_zero_p1 <= 32) goto end; |
| 346 |
block[0x23] = temp_block[0x23]; block[0x2A] = temp_block[0x2A]; |
| 347 |
block[0x31] = temp_block[0x31]; block[0x38] = temp_block[0x38]; |
| 348 |
block[0x39] = temp_block[0x39]; block[0x32] = temp_block[0x32]; |
| 349 |
block[0x2B] = temp_block[0x2B]; block[0x24] = temp_block[0x24]; |
| 350 |
if(last_non_zero_p1 <= 40) goto end; |
| 351 |
block[0x1D] = temp_block[0x1D]; block[0x16] = temp_block[0x16]; |
| 352 |
block[0x0F] = temp_block[0x0F]; block[0x17] = temp_block[0x17]; |
| 353 |
block[0x1E] = temp_block[0x1E]; block[0x25] = temp_block[0x25]; |
| 354 |
block[0x2C] = temp_block[0x2C]; block[0x33] = temp_block[0x33]; |
| 355 |
if(last_non_zero_p1 <= 48) goto end; |
| 356 |
block[0x3A] = temp_block[0x3A]; block[0x3B] = temp_block[0x3B]; |
| 357 |
block[0x34] = temp_block[0x34]; block[0x2D] = temp_block[0x2D]; |
| 358 |
block[0x26] = temp_block[0x26]; block[0x1F] = temp_block[0x1F]; |
| 359 |
block[0x27] = temp_block[0x27]; block[0x2E] = temp_block[0x2E]; |
| 360 |
if(last_non_zero_p1 <= 56) goto end; |
| 361 |
block[0x35] = temp_block[0x35]; block[0x3C] = temp_block[0x3C]; |
| 362 |
block[0x3D] = temp_block[0x3D]; block[0x36] = temp_block[0x36]; |
| 363 |
block[0x2F] = temp_block[0x2F]; block[0x37] = temp_block[0x37]; |
| 364 |
block[0x3E] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F]; |
| 365 |
} |
| 366 |
end:
|
| 367 |
/*
|
| 368 |
for(i=0; i<last_non_zero_p1; i++)
|
| 369 |
{
|
| 370 |
int j= zigzag_direct_noperm[i];
|
| 371 |
block[block_permute_op(j)]= temp_block[j];
|
| 372 |
}
|
| 373 |
*/
|
| 374 |
|
| 375 |
return last_non_zero_p1 - 1; |
| 376 |
} |