mirror of https://git.ffmpeg.org/ffmpeg.git
463 lines
20 KiB
C
463 lines
20 KiB
C
/*
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* Optimized for ia32 CPUs by Nick Kurshev <nickols_k@mail.ru>
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* h263, mpeg1, mpeg2 dequantizer & draw_edges by Michael Niedermayer <michaelni@gmx.at>
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*
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* This file is part of Libav.
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*
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* Libav 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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* Libav 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 Libav; 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/attributes.h"
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#include "libavutil/cpu.h"
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#include "libavutil/x86/asm.h"
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#include "libavutil/x86/cpu.h"
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#include "libavcodec/avcodec.h"
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#include "libavcodec/mpegvideo.h"
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#if HAVE_INLINE_ASM
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static void dct_unquantize_h263_intra_mmx(MpegEncContext *s,
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int16_t *block, int n, int qscale)
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{
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x86_reg level, qmul, qadd, nCoeffs;
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qmul = qscale << 1;
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assert(s->block_last_index[n]>=0 || s->h263_aic);
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if (!s->h263_aic) {
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if (n < 4)
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level = block[0] * s->y_dc_scale;
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else
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level = block[0] * s->c_dc_scale;
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qadd = (qscale - 1) | 1;
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}else{
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qadd = 0;
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level= block[0];
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}
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if(s->ac_pred)
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nCoeffs=63;
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else
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nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
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__asm__ volatile(
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"movd %1, %%mm6 \n\t" //qmul
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"packssdw %%mm6, %%mm6 \n\t"
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"packssdw %%mm6, %%mm6 \n\t"
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"movd %2, %%mm5 \n\t" //qadd
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"pxor %%mm7, %%mm7 \n\t"
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"packssdw %%mm5, %%mm5 \n\t"
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"packssdw %%mm5, %%mm5 \n\t"
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"psubw %%mm5, %%mm7 \n\t"
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"pxor %%mm4, %%mm4 \n\t"
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".p2align 4 \n\t"
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"1: \n\t"
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"movq (%0, %3), %%mm0 \n\t"
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"movq 8(%0, %3), %%mm1 \n\t"
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"pmullw %%mm6, %%mm0 \n\t"
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"pmullw %%mm6, %%mm1 \n\t"
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"movq (%0, %3), %%mm2 \n\t"
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"movq 8(%0, %3), %%mm3 \n\t"
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"pcmpgtw %%mm4, %%mm2 \n\t" // block[i] < 0 ? -1 : 0
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"pcmpgtw %%mm4, %%mm3 \n\t" // block[i] < 0 ? -1 : 0
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"pxor %%mm2, %%mm0 \n\t"
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"pxor %%mm3, %%mm1 \n\t"
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"paddw %%mm7, %%mm0 \n\t"
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"paddw %%mm7, %%mm1 \n\t"
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"pxor %%mm0, %%mm2 \n\t"
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"pxor %%mm1, %%mm3 \n\t"
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"pcmpeqw %%mm7, %%mm0 \n\t" // block[i] == 0 ? -1 : 0
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"pcmpeqw %%mm7, %%mm1 \n\t" // block[i] == 0 ? -1 : 0
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"pandn %%mm2, %%mm0 \n\t"
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"pandn %%mm3, %%mm1 \n\t"
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"movq %%mm0, (%0, %3) \n\t"
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"movq %%mm1, 8(%0, %3) \n\t"
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"add $16, %3 \n\t"
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"jng 1b \n\t"
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::"r" (block+nCoeffs), "rm"(qmul), "rm" (qadd), "r" (2*(-nCoeffs))
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: "memory"
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);
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block[0]= level;
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}
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static void dct_unquantize_h263_inter_mmx(MpegEncContext *s,
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int16_t *block, int n, int qscale)
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{
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x86_reg qmul, qadd, nCoeffs;
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qmul = qscale << 1;
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qadd = (qscale - 1) | 1;
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assert(s->block_last_index[n]>=0 || s->h263_aic);
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nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
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__asm__ volatile(
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"movd %1, %%mm6 \n\t" //qmul
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"packssdw %%mm6, %%mm6 \n\t"
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"packssdw %%mm6, %%mm6 \n\t"
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"movd %2, %%mm5 \n\t" //qadd
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"pxor %%mm7, %%mm7 \n\t"
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"packssdw %%mm5, %%mm5 \n\t"
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"packssdw %%mm5, %%mm5 \n\t"
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"psubw %%mm5, %%mm7 \n\t"
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"pxor %%mm4, %%mm4 \n\t"
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".p2align 4 \n\t"
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"1: \n\t"
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"movq (%0, %3), %%mm0 \n\t"
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"movq 8(%0, %3), %%mm1 \n\t"
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"pmullw %%mm6, %%mm0 \n\t"
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"pmullw %%mm6, %%mm1 \n\t"
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"movq (%0, %3), %%mm2 \n\t"
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"movq 8(%0, %3), %%mm3 \n\t"
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"pcmpgtw %%mm4, %%mm2 \n\t" // block[i] < 0 ? -1 : 0
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"pcmpgtw %%mm4, %%mm3 \n\t" // block[i] < 0 ? -1 : 0
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"pxor %%mm2, %%mm0 \n\t"
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"pxor %%mm3, %%mm1 \n\t"
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"paddw %%mm7, %%mm0 \n\t"
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"paddw %%mm7, %%mm1 \n\t"
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"pxor %%mm0, %%mm2 \n\t"
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"pxor %%mm1, %%mm3 \n\t"
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"pcmpeqw %%mm7, %%mm0 \n\t" // block[i] == 0 ? -1 : 0
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"pcmpeqw %%mm7, %%mm1 \n\t" // block[i] == 0 ? -1 : 0
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"pandn %%mm2, %%mm0 \n\t"
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"pandn %%mm3, %%mm1 \n\t"
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"movq %%mm0, (%0, %3) \n\t"
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"movq %%mm1, 8(%0, %3) \n\t"
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"add $16, %3 \n\t"
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"jng 1b \n\t"
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::"r" (block+nCoeffs), "rm"(qmul), "rm" (qadd), "r" (2*(-nCoeffs))
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: "memory"
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);
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}
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static void dct_unquantize_mpeg1_intra_mmx(MpegEncContext *s,
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int16_t *block, int n, int qscale)
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{
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x86_reg nCoeffs;
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const uint16_t *quant_matrix;
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int block0;
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assert(s->block_last_index[n]>=0);
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nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ]+1;
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if (n < 4)
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block0 = block[0] * s->y_dc_scale;
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else
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block0 = block[0] * s->c_dc_scale;
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/* XXX: only mpeg1 */
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quant_matrix = s->intra_matrix;
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__asm__ volatile(
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"pcmpeqw %%mm7, %%mm7 \n\t"
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"psrlw $15, %%mm7 \n\t"
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"movd %2, %%mm6 \n\t"
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"packssdw %%mm6, %%mm6 \n\t"
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"packssdw %%mm6, %%mm6 \n\t"
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"mov %3, %%"REG_a" \n\t"
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".p2align 4 \n\t"
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"1: \n\t"
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"movq (%0, %%"REG_a"), %%mm0 \n\t"
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"movq 8(%0, %%"REG_a"), %%mm1 \n\t"
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"movq (%1, %%"REG_a"), %%mm4 \n\t"
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"movq 8(%1, %%"REG_a"), %%mm5 \n\t"
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"pmullw %%mm6, %%mm4 \n\t" // q=qscale*quant_matrix[i]
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"pmullw %%mm6, %%mm5 \n\t" // q=qscale*quant_matrix[i]
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"pxor %%mm2, %%mm2 \n\t"
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"pxor %%mm3, %%mm3 \n\t"
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"pcmpgtw %%mm0, %%mm2 \n\t" // block[i] < 0 ? -1 : 0
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"pcmpgtw %%mm1, %%mm3 \n\t" // block[i] < 0 ? -1 : 0
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"pxor %%mm2, %%mm0 \n\t"
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"pxor %%mm3, %%mm1 \n\t"
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"psubw %%mm2, %%mm0 \n\t" // abs(block[i])
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"psubw %%mm3, %%mm1 \n\t" // abs(block[i])
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"pmullw %%mm4, %%mm0 \n\t" // abs(block[i])*q
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"pmullw %%mm5, %%mm1 \n\t" // abs(block[i])*q
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"pxor %%mm4, %%mm4 \n\t"
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"pxor %%mm5, %%mm5 \n\t" // FIXME slow
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"pcmpeqw (%0, %%"REG_a"), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
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"pcmpeqw 8(%0, %%"REG_a"), %%mm5\n\t" // block[i] == 0 ? -1 : 0
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"psraw $3, %%mm0 \n\t"
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"psraw $3, %%mm1 \n\t"
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"psubw %%mm7, %%mm0 \n\t"
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"psubw %%mm7, %%mm1 \n\t"
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"por %%mm7, %%mm0 \n\t"
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"por %%mm7, %%mm1 \n\t"
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"pxor %%mm2, %%mm0 \n\t"
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"pxor %%mm3, %%mm1 \n\t"
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"psubw %%mm2, %%mm0 \n\t"
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"psubw %%mm3, %%mm1 \n\t"
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"pandn %%mm0, %%mm4 \n\t"
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"pandn %%mm1, %%mm5 \n\t"
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"movq %%mm4, (%0, %%"REG_a") \n\t"
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"movq %%mm5, 8(%0, %%"REG_a") \n\t"
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"add $16, %%"REG_a" \n\t"
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"js 1b \n\t"
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::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale), "g" (-2*nCoeffs)
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: "%"REG_a, "memory"
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);
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block[0]= block0;
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}
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static void dct_unquantize_mpeg1_inter_mmx(MpegEncContext *s,
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int16_t *block, int n, int qscale)
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{
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x86_reg nCoeffs;
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const uint16_t *quant_matrix;
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assert(s->block_last_index[n]>=0);
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nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ]+1;
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quant_matrix = s->inter_matrix;
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__asm__ volatile(
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"pcmpeqw %%mm7, %%mm7 \n\t"
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"psrlw $15, %%mm7 \n\t"
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"movd %2, %%mm6 \n\t"
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"packssdw %%mm6, %%mm6 \n\t"
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"packssdw %%mm6, %%mm6 \n\t"
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"mov %3, %%"REG_a" \n\t"
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".p2align 4 \n\t"
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"1: \n\t"
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"movq (%0, %%"REG_a"), %%mm0 \n\t"
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"movq 8(%0, %%"REG_a"), %%mm1 \n\t"
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"movq (%1, %%"REG_a"), %%mm4 \n\t"
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"movq 8(%1, %%"REG_a"), %%mm5 \n\t"
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"pmullw %%mm6, %%mm4 \n\t" // q=qscale*quant_matrix[i]
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"pmullw %%mm6, %%mm5 \n\t" // q=qscale*quant_matrix[i]
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"pxor %%mm2, %%mm2 \n\t"
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"pxor %%mm3, %%mm3 \n\t"
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"pcmpgtw %%mm0, %%mm2 \n\t" // block[i] < 0 ? -1 : 0
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"pcmpgtw %%mm1, %%mm3 \n\t" // block[i] < 0 ? -1 : 0
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"pxor %%mm2, %%mm0 \n\t"
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"pxor %%mm3, %%mm1 \n\t"
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"psubw %%mm2, %%mm0 \n\t" // abs(block[i])
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"psubw %%mm3, %%mm1 \n\t" // abs(block[i])
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"paddw %%mm0, %%mm0 \n\t" // abs(block[i])*2
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"paddw %%mm1, %%mm1 \n\t" // abs(block[i])*2
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"paddw %%mm7, %%mm0 \n\t" // abs(block[i])*2 + 1
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"paddw %%mm7, %%mm1 \n\t" // abs(block[i])*2 + 1
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"pmullw %%mm4, %%mm0 \n\t" // (abs(block[i])*2 + 1)*q
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"pmullw %%mm5, %%mm1 \n\t" // (abs(block[i])*2 + 1)*q
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"pxor %%mm4, %%mm4 \n\t"
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"pxor %%mm5, %%mm5 \n\t" // FIXME slow
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"pcmpeqw (%0, %%"REG_a"), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
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"pcmpeqw 8(%0, %%"REG_a"), %%mm5\n\t" // block[i] == 0 ? -1 : 0
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"psraw $4, %%mm0 \n\t"
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"psraw $4, %%mm1 \n\t"
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"psubw %%mm7, %%mm0 \n\t"
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"psubw %%mm7, %%mm1 \n\t"
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"por %%mm7, %%mm0 \n\t"
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"por %%mm7, %%mm1 \n\t"
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"pxor %%mm2, %%mm0 \n\t"
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"pxor %%mm3, %%mm1 \n\t"
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"psubw %%mm2, %%mm0 \n\t"
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"psubw %%mm3, %%mm1 \n\t"
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"pandn %%mm0, %%mm4 \n\t"
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"pandn %%mm1, %%mm5 \n\t"
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"movq %%mm4, (%0, %%"REG_a") \n\t"
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"movq %%mm5, 8(%0, %%"REG_a") \n\t"
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"add $16, %%"REG_a" \n\t"
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"js 1b \n\t"
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::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale), "g" (-2*nCoeffs)
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: "%"REG_a, "memory"
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);
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}
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static void dct_unquantize_mpeg2_intra_mmx(MpegEncContext *s,
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int16_t *block, int n, int qscale)
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{
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x86_reg nCoeffs;
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const uint16_t *quant_matrix;
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int block0;
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assert(s->block_last_index[n]>=0);
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if(s->alternate_scan) nCoeffs= 63; //FIXME
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else nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ];
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if (n < 4)
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block0 = block[0] * s->y_dc_scale;
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else
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block0 = block[0] * s->c_dc_scale;
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quant_matrix = s->intra_matrix;
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__asm__ volatile(
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"pcmpeqw %%mm7, %%mm7 \n\t"
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"psrlw $15, %%mm7 \n\t"
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"movd %2, %%mm6 \n\t"
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"packssdw %%mm6, %%mm6 \n\t"
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"packssdw %%mm6, %%mm6 \n\t"
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"mov %3, %%"REG_a" \n\t"
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".p2align 4 \n\t"
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"1: \n\t"
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"movq (%0, %%"REG_a"), %%mm0 \n\t"
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"movq 8(%0, %%"REG_a"), %%mm1 \n\t"
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"movq (%1, %%"REG_a"), %%mm4 \n\t"
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"movq 8(%1, %%"REG_a"), %%mm5 \n\t"
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"pmullw %%mm6, %%mm4 \n\t" // q=qscale*quant_matrix[i]
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"pmullw %%mm6, %%mm5 \n\t" // q=qscale*quant_matrix[i]
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"pxor %%mm2, %%mm2 \n\t"
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"pxor %%mm3, %%mm3 \n\t"
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"pcmpgtw %%mm0, %%mm2 \n\t" // block[i] < 0 ? -1 : 0
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"pcmpgtw %%mm1, %%mm3 \n\t" // block[i] < 0 ? -1 : 0
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"pxor %%mm2, %%mm0 \n\t"
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"pxor %%mm3, %%mm1 \n\t"
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"psubw %%mm2, %%mm0 \n\t" // abs(block[i])
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"psubw %%mm3, %%mm1 \n\t" // abs(block[i])
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"pmullw %%mm4, %%mm0 \n\t" // abs(block[i])*q
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"pmullw %%mm5, %%mm1 \n\t" // abs(block[i])*q
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"pxor %%mm4, %%mm4 \n\t"
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"pxor %%mm5, %%mm5 \n\t" // FIXME slow
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"pcmpeqw (%0, %%"REG_a"), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
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"pcmpeqw 8(%0, %%"REG_a"), %%mm5\n\t" // block[i] == 0 ? -1 : 0
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"psraw $3, %%mm0 \n\t"
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"psraw $3, %%mm1 \n\t"
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"pxor %%mm2, %%mm0 \n\t"
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"pxor %%mm3, %%mm1 \n\t"
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"psubw %%mm2, %%mm0 \n\t"
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"psubw %%mm3, %%mm1 \n\t"
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"pandn %%mm0, %%mm4 \n\t"
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"pandn %%mm1, %%mm5 \n\t"
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"movq %%mm4, (%0, %%"REG_a") \n\t"
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"movq %%mm5, 8(%0, %%"REG_a") \n\t"
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"add $16, %%"REG_a" \n\t"
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"jng 1b \n\t"
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::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale), "g" (-2*nCoeffs)
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: "%"REG_a, "memory"
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);
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block[0]= block0;
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//Note, we do not do mismatch control for intra as errors cannot accumulate
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}
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static void dct_unquantize_mpeg2_inter_mmx(MpegEncContext *s,
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int16_t *block, int n, int qscale)
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{
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x86_reg nCoeffs;
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const uint16_t *quant_matrix;
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assert(s->block_last_index[n]>=0);
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if(s->alternate_scan) nCoeffs= 63; //FIXME
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else nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ];
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quant_matrix = s->inter_matrix;
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__asm__ volatile(
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"pcmpeqw %%mm7, %%mm7 \n\t"
|
|
"psrlq $48, %%mm7 \n\t"
|
|
"movd %2, %%mm6 \n\t"
|
|
"packssdw %%mm6, %%mm6 \n\t"
|
|
"packssdw %%mm6, %%mm6 \n\t"
|
|
"mov %3, %%"REG_a" \n\t"
|
|
".p2align 4 \n\t"
|
|
"1: \n\t"
|
|
"movq (%0, %%"REG_a"), %%mm0 \n\t"
|
|
"movq 8(%0, %%"REG_a"), %%mm1 \n\t"
|
|
"movq (%1, %%"REG_a"), %%mm4 \n\t"
|
|
"movq 8(%1, %%"REG_a"), %%mm5 \n\t"
|
|
"pmullw %%mm6, %%mm4 \n\t" // q=qscale*quant_matrix[i]
|
|
"pmullw %%mm6, %%mm5 \n\t" // q=qscale*quant_matrix[i]
|
|
"pxor %%mm2, %%mm2 \n\t"
|
|
"pxor %%mm3, %%mm3 \n\t"
|
|
"pcmpgtw %%mm0, %%mm2 \n\t" // block[i] < 0 ? -1 : 0
|
|
"pcmpgtw %%mm1, %%mm3 \n\t" // block[i] < 0 ? -1 : 0
|
|
"pxor %%mm2, %%mm0 \n\t"
|
|
"pxor %%mm3, %%mm1 \n\t"
|
|
"psubw %%mm2, %%mm0 \n\t" // abs(block[i])
|
|
"psubw %%mm3, %%mm1 \n\t" // abs(block[i])
|
|
"paddw %%mm0, %%mm0 \n\t" // abs(block[i])*2
|
|
"paddw %%mm1, %%mm1 \n\t" // abs(block[i])*2
|
|
"pmullw %%mm4, %%mm0 \n\t" // abs(block[i])*2*q
|
|
"pmullw %%mm5, %%mm1 \n\t" // abs(block[i])*2*q
|
|
"paddw %%mm4, %%mm0 \n\t" // (abs(block[i])*2 + 1)*q
|
|
"paddw %%mm5, %%mm1 \n\t" // (abs(block[i])*2 + 1)*q
|
|
"pxor %%mm4, %%mm4 \n\t"
|
|
"pxor %%mm5, %%mm5 \n\t" // FIXME slow
|
|
"pcmpeqw (%0, %%"REG_a"), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
|
|
"pcmpeqw 8(%0, %%"REG_a"), %%mm5\n\t" // block[i] == 0 ? -1 : 0
|
|
"psrlw $4, %%mm0 \n\t"
|
|
"psrlw $4, %%mm1 \n\t"
|
|
"pxor %%mm2, %%mm0 \n\t"
|
|
"pxor %%mm3, %%mm1 \n\t"
|
|
"psubw %%mm2, %%mm0 \n\t"
|
|
"psubw %%mm3, %%mm1 \n\t"
|
|
"pandn %%mm0, %%mm4 \n\t"
|
|
"pandn %%mm1, %%mm5 \n\t"
|
|
"pxor %%mm4, %%mm7 \n\t"
|
|
"pxor %%mm5, %%mm7 \n\t"
|
|
"movq %%mm4, (%0, %%"REG_a") \n\t"
|
|
"movq %%mm5, 8(%0, %%"REG_a") \n\t"
|
|
|
|
"add $16, %%"REG_a" \n\t"
|
|
"jng 1b \n\t"
|
|
"movd 124(%0, %3), %%mm0 \n\t"
|
|
"movq %%mm7, %%mm6 \n\t"
|
|
"psrlq $32, %%mm7 \n\t"
|
|
"pxor %%mm6, %%mm7 \n\t"
|
|
"movq %%mm7, %%mm6 \n\t"
|
|
"psrlq $16, %%mm7 \n\t"
|
|
"pxor %%mm6, %%mm7 \n\t"
|
|
"pslld $31, %%mm7 \n\t"
|
|
"psrlq $15, %%mm7 \n\t"
|
|
"pxor %%mm7, %%mm0 \n\t"
|
|
"movd %%mm0, 124(%0, %3) \n\t"
|
|
|
|
::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale), "r" (-2*nCoeffs)
|
|
: "%"REG_a, "memory"
|
|
);
|
|
}
|
|
|
|
#endif /* HAVE_INLINE_ASM */
|
|
|
|
av_cold void ff_mpv_common_init_x86(MpegEncContext *s)
|
|
{
|
|
#if HAVE_INLINE_ASM
|
|
int cpu_flags = av_get_cpu_flags();
|
|
|
|
if (INLINE_MMX(cpu_flags)) {
|
|
s->dct_unquantize_h263_intra = dct_unquantize_h263_intra_mmx;
|
|
s->dct_unquantize_h263_inter = dct_unquantize_h263_inter_mmx;
|
|
s->dct_unquantize_mpeg1_intra = dct_unquantize_mpeg1_intra_mmx;
|
|
s->dct_unquantize_mpeg1_inter = dct_unquantize_mpeg1_inter_mmx;
|
|
if(!(s->flags & CODEC_FLAG_BITEXACT))
|
|
s->dct_unquantize_mpeg2_intra = dct_unquantize_mpeg2_intra_mmx;
|
|
s->dct_unquantize_mpeg2_inter = dct_unquantize_mpeg2_inter_mmx;
|
|
}
|
|
#endif /* HAVE_INLINE_ASM */
|
|
}
|