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