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c22c2c5e03
Benefits from wider registers. Benchmarks: dct_unquantize_mpeg2_intra_c: 228.2 ( 1.00x) dct_unquantize_mpeg2_intra_mmx: 28.2 ( 8.10x) dct_unquantize_mpeg2_intra_sse2: 18.4 (12.37x) Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
396 lines
16 KiB
C
396 lines
16 KiB
C
/*
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* Optimized for ia32 CPUs by Nick Kurshev <nickols_k@mail.ru>
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* H.263, MPEG-1, MPEG-2 dequantizer & draw_edges by 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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#include "libavutil/attributes.h"
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#include "libavutil/avassert.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/mpegvideo.h"
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#include "libavcodec/mpegvideodata.h"
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#include "libavcodec/mpegvideo_unquantize.h"
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#if HAVE_SSE2_INLINE
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#define SPLATW(reg) "punpcklwd %%" #reg ", %%" #reg "\n\t" \
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"pshufd $0, %%" #reg ", %%" #reg "\n\t"
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#if HAVE_SSSE3_INLINE
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static void dct_unquantize_h263_intra_ssse3(const MPVContext *s,
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int16_t *block, int n, int qscale)
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{
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x86_reg qmul = (unsigned)qscale << 1;
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int level, qadd;
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av_assert2(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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x86_reg offset = s->ac_pred ? 63 << 1 : s->intra_scantable.raster_end[s->block_last_index[n]] << 1;
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__asm__ volatile(
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"movd %k1, %%xmm0 \n\t" //qmul
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"lea (%2, %0), %1 \n\t"
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"neg %0 \n\t"
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"movd %3, %%xmm1 \n\t" //qadd
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SPLATW(xmm0)
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SPLATW(xmm1)
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".p2align 4 \n\t"
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"1: \n\t"
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"movdqa (%1, %0), %%xmm2 \n\t"
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"movdqa 16(%1, %0), %%xmm3 \n\t"
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"movdqa %%xmm1, %%xmm4 \n\t"
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"movdqa %%xmm1, %%xmm5 \n\t"
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"psignw %%xmm2, %%xmm4 \n\t" // sgn(block[i])*qadd
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"psignw %%xmm3, %%xmm5 \n\t" // sgn(block[i])*qadd
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"pmullw %%xmm0, %%xmm2 \n\t"
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"pmullw %%xmm0, %%xmm3 \n\t"
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"paddw %%xmm4, %%xmm2 \n\t"
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"paddw %%xmm5, %%xmm3 \n\t"
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"movdqa %%xmm2, (%1, %0) \n\t"
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"movdqa %%xmm3, 16(%1, %0) \n\t"
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"add $32, %0 \n\t"
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"jng 1b \n\t"
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: "+r"(offset), "+r"(qmul)
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: "r" (block), "rm" (qadd)
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: XMM_CLOBBERS("%xmm0", "%xmm1", "%xmm2", "%xmm3", "%xmm4", "%xmm5",) "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_ssse3(const MPVContext *s,
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int16_t *block, int n, int qscale)
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{
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int qmul = qscale << 1;
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int qadd = (qscale - 1) | 1;
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av_assert2(s->block_last_index[n]>=0 || s->h263_aic);
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x86_reg offset = s->inter_scantable.raster_end[s->block_last_index[n]] << 1;
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__asm__ volatile(
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"movd %2, %%xmm0 \n\t" //qmul
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"movd %3, %%xmm1 \n\t" //qadd
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"add %1, %0 \n\t"
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"neg %1 \n\t"
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SPLATW(xmm0)
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SPLATW(xmm1)
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".p2align 4 \n\t"
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"1: \n\t"
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"movdqa (%0, %1), %%xmm2 \n\t"
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"movdqa 16(%0, %1), %%xmm3 \n\t"
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"movdqa %%xmm1, %%xmm4 \n\t"
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"movdqa %%xmm1, %%xmm5 \n\t"
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"psignw %%xmm2, %%xmm4 \n\t" // sgn(block[i])*qadd
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"psignw %%xmm3, %%xmm5 \n\t" // sgn(block[i])*qadd
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"pmullw %%xmm0, %%xmm2 \n\t"
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"pmullw %%xmm0, %%xmm3 \n\t"
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"paddw %%xmm4, %%xmm2 \n\t"
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"paddw %%xmm5, %%xmm3 \n\t"
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"movdqa %%xmm2, (%0, %1) \n\t"
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"movdqa %%xmm3, 16(%0, %1) \n\t"
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"add $32, %1 \n\t"
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"jng 1b \n\t"
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: "+r" (block), "+r" (offset)
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: "rm"(qmul), "rm" (qadd)
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: XMM_CLOBBERS("%xmm0", "%xmm1", "%xmm2", "%xmm3", "%xmm4", "%xmm5",) "memory"
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);
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}
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static void dct_unquantize_mpeg1_intra_ssse3(const MPVContext *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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av_assert2(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 MPEG-1 */
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quant_matrix = s->intra_matrix;
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x86_reg offset = -2 * nCoeffs;
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__asm__ volatile(
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"movd %3, %%xmm6 \n\t"
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"pcmpeqw %%xmm7, %%xmm7 \n\t"
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"psrlw $15, %%xmm7 \n\t"
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SPLATW(xmm6)
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".p2align 4 \n\t"
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"1: \n\t"
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"movdqa (%2, %0), %%xmm4 \n\t"
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"movdqa 16(%2, %0), %%xmm5 \n\t"
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"movdqa (%1, %0), %%xmm0 \n\t"
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"movdqa 16(%1, %0), %%xmm1 \n\t"
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"pmullw %%xmm6, %%xmm4 \n\t" // q=qscale*quant_matrix[i]
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"pmullw %%xmm6, %%xmm5 \n\t" // q=qscale*quant_matrix[i]
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"pabsw %%xmm0, %%xmm2 \n\t" // abs(block[i])
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"pabsw %%xmm1, %%xmm3 \n\t" // abs(block[i])
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"pmullw %%xmm4, %%xmm2 \n\t" // abs(block[i])*q
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"pmullw %%xmm5, %%xmm3 \n\t" // abs(block[i])*q
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"psraw $3, %%xmm2 \n\t"
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"psraw $3, %%xmm3 \n\t"
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"psubw %%xmm7, %%xmm2 \n\t"
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"psubw %%xmm7, %%xmm3 \n\t"
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"por %%xmm7, %%xmm2 \n\t"
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"por %%xmm7, %%xmm3 \n\t"
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"psignw %%xmm0, %%xmm2 \n\t"
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"psignw %%xmm1, %%xmm3 \n\t"
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"movdqa %%xmm2, (%1, %0) \n\t"
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"movdqa %%xmm3, 16(%1, %0) \n\t"
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"add $32, %0 \n\t"
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"js 1b \n\t"
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: "+r" (offset)
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: "r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale)
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: XMM_CLOBBERS("%xmm0", "%xmm1", "%xmm2", "%xmm3", "%xmm4", "%xmm5", "%xmm6", "%xmm7",)
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"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_ssse3(const MPVContext *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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av_assert2(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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x86_reg offset = -2 * nCoeffs;
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__asm__ volatile(
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"movd %3, %%xmm6 \n\t"
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"pcmpeqw %%xmm7, %%xmm7 \n\t"
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"psrlw $15, %%xmm7 \n\t"
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SPLATW(xmm6)
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".p2align 4 \n\t"
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"1: \n\t"
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"movdqa (%2, %0), %%xmm4 \n\t"
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"movdqa 16(%2, %0), %%xmm5 \n\t"
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"movdqa (%1, %0), %%xmm0 \n\t"
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"movdqa 16(%1, %0), %%xmm1 \n\t"
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"pmullw %%xmm6, %%xmm4 \n\t" // q=qscale*quant_matrix[i]
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"pmullw %%xmm6, %%xmm5 \n\t" // q=qscale*quant_matrix[i]
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"pabsw %%xmm0, %%xmm2 \n\t" // abs(block[i])
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"pabsw %%xmm1, %%xmm3 \n\t" // abs(block[i])
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"paddw %%xmm2, %%xmm2 \n\t" // abs(block[i])*2
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"paddw %%xmm3, %%xmm3 \n\t" // abs(block[i])*2
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"paddw %%xmm7, %%xmm2 \n\t" // abs(block[i])*2 + 1
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"paddw %%xmm7, %%xmm3 \n\t" // abs(block[i])*2 + 1
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"pmullw %%xmm4, %%xmm2 \n\t" // (abs(block[i])*2 + 1)*q
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"pmullw %%xmm5, %%xmm3 \n\t" // (abs(block[i])*2 + 1)*q
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"psraw $4, %%xmm2 \n\t"
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"psraw $4, %%xmm3 \n\t"
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"psubw %%xmm7, %%xmm2 \n\t"
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"psubw %%xmm7, %%xmm3 \n\t"
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"por %%xmm7, %%xmm2 \n\t"
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"por %%xmm7, %%xmm3 \n\t"
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"psignw %%xmm0, %%xmm2 \n\t"
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"psignw %%xmm1, %%xmm3 \n\t"
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"movdqa %%xmm2, (%1, %0) \n\t"
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"movdqa %%xmm3, 16(%1, %0) \n\t"
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"add $32, %0 \n\t"
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"js 1b \n\t"
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: "+r" (offset)
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: "r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale)
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: XMM_CLOBBERS("%xmm0", "%xmm1", "%xmm2", "%xmm3", "%xmm4", "%xmm5", "%xmm6", "%xmm7",)
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"memory"
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);
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}
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#endif /* HAVE_SSSE3_INLINE */
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static void dct_unquantize_mpeg2_intra_sse2(const MPVContext *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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av_assert2(s->block_last_index[n]>=0);
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if (s->q_scale_type) qscale = ff_mpeg2_non_linear_qscale[qscale];
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else qscale <<= 1;
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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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x86_reg offset = -2 * nCoeffs;
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__asm__ volatile(
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"movd %3, %%xmm6 \n\t"
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SPLATW(xmm6)
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".p2align 4 \n\t"
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"1: \n\t"
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"movdqa (%1, %0), %%xmm0 \n\t"
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"movdqa 16(%1, %0), %%xmm1 \n\t"
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"movdqa (%2, %0), %%xmm4 \n\t"
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"movdqa 16(%2, %0), %%xmm5 \n\t"
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"pmullw %%xmm6, %%xmm4 \n\t" // q=qscale*quant_matrix[i]
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"pmullw %%xmm6, %%xmm5 \n\t" // q=qscale*quant_matrix[i]
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"movdqa %%xmm0, %%xmm2 \n\t"
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"movdqa %%xmm1, %%xmm3 \n\t"
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"psrlw $12, %%xmm2 \n\t" // block[i] < 0 ? 0xf : 0
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"psrlw $12, %%xmm3 \n\t" // (block[i] is in the -2048..2047 range)
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"pmullw %%xmm4, %%xmm0 \n\t" // block[i]*q
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"pmullw %%xmm5, %%xmm1 \n\t" // block[i]*q
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"paddw %%xmm2, %%xmm0 \n\t" // bias negative block[i]
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"paddw %%xmm3, %%xmm1 \n\t" // so that a right-shift
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"psraw $4, %%xmm0 \n\t" // is equivalent to divide
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"psraw $4, %%xmm1 \n\t" // with rounding towards zero
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"movdqa %%xmm0, (%1, %0) \n\t"
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"movdqa %%xmm1, 16(%1, %0) \n\t"
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"add $32, %0 \n\t"
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"jng 1b \n\t"
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: "+r" (offset)
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: "r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale)
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: XMM_CLOBBERS("%xmm0", "%xmm1", "%xmm2", "%xmm3", "%xmm4", "%xmm5", "%xmm6",)
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"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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#if HAVE_SSSE3_INLINE
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static void dct_unquantize_mpeg2_inter_ssse3(const MPVContext *s,
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int16_t *block, int n, int qscale)
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{
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av_assert2(s->block_last_index[n]>=0);
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x86_reg qscale2 = s->q_scale_type ? ff_mpeg2_non_linear_qscale[qscale] : (unsigned)qscale << 1;
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x86_reg offset = s->intra_scantable.raster_end[s->block_last_index[n]] << 1;
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const void *quant_matrix = (const char*)s->inter_matrix + offset;
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__asm__ volatile(
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"movd %k1, %%xmm6 \n\t"
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"lea (%2, %0), %1 \n\t"
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"neg %0 \n\t"
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SPLATW(xmm6)
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"pcmpeqw %%xmm7, %%xmm7 \n\t"
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"psrldq $14, %%xmm7 \n\t"
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".p2align 4 \n\t"
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"1: \n\t"
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"movdqa (%3, %0), %%xmm4 \n\t"
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"movdqa 16(%3, %0), %%xmm5 \n\t"
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"movdqa (%1, %0), %%xmm0 \n\t"
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"movdqa 16(%1, %0), %%xmm1 \n\t"
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"pmullw %%xmm6, %%xmm4 \n\t" // q=qscale*quant_matrix[i]
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"pmullw %%xmm6, %%xmm5 \n\t" // q=qscale*quant_matrix[i]
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"pabsw %%xmm0, %%xmm2 \n\t" // abs(block[i])
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"pabsw %%xmm1, %%xmm3 \n\t" // abs(block[i])
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"paddw %%xmm2, %%xmm2 \n\t" // abs(block[i])*2
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"paddw %%xmm3, %%xmm3 \n\t" // abs(block[i])*2
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"pmullw %%xmm4, %%xmm2 \n\t" // abs(block[i])*2*q
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"pmullw %%xmm5, %%xmm3 \n\t" // abs(block[i])*2*q
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"paddw %%xmm4, %%xmm2 \n\t" // (abs(block[i])*2 + 1)*q
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"paddw %%xmm5, %%xmm3 \n\t" // (abs(block[i])*2 + 1)*q
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"psrlw $5, %%xmm2 \n\t"
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"psrlw $5, %%xmm3 \n\t"
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"psignw %%xmm0, %%xmm2 \n\t"
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"psignw %%xmm1, %%xmm3 \n\t"
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"movdqa %%xmm2, (%1, %0) \n\t"
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"movdqa %%xmm3, 16(%1, %0) \n\t"
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"pxor %%xmm2, %%xmm7 \n\t"
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"pxor %%xmm3, %%xmm7 \n\t"
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"add $32, %0 \n\t"
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"jng 1b \n\t"
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"movd 124(%2), %%xmm0 \n\t"
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"movhlps %%xmm7, %%xmm6 \n\t"
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"pxor %%xmm6, %%xmm7 \n\t"
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"pshufd $1, %%xmm7, %%xmm6 \n\t"
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"pxor %%xmm6, %%xmm7 \n\t"
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"pshuflw $1, %%xmm7, %%xmm6 \n\t"
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"pxor %%xmm6, %%xmm7 \n\t"
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"pslld $31, %%xmm7 \n\t"
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"psrld $15, %%xmm7 \n\t"
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"pxor %%xmm7, %%xmm0 \n\t"
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"movd %%xmm0, 124(%2) \n\t"
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: "+r"(offset), "+r" (qscale2)
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: "r" (block), "r"(quant_matrix)
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: XMM_CLOBBERS("%xmm0", "%xmm1", "%xmm2", "%xmm3", "%xmm4", "%xmm5", "%xmm6", "%xmm7",)
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"memory"
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);
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}
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#endif /* HAVE_SSSE3_INLINE */
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#endif /* HAVE_SSE2_INLINE */
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av_cold void ff_mpv_unquantize_init_x86(MPVUnquantDSPContext *s, int bitexact)
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{
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#if HAVE_SSE2_INLINE
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int cpu_flags = av_get_cpu_flags();
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if (INLINE_SSE2(cpu_flags)) {
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if (!bitexact)
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s->dct_unquantize_mpeg2_intra = dct_unquantize_mpeg2_intra_sse2;
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}
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#if HAVE_SSSE3_INLINE
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if (INLINE_SSSE3(cpu_flags)) {
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s->dct_unquantize_h263_intra = dct_unquantize_h263_intra_ssse3;
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s->dct_unquantize_h263_inter = dct_unquantize_h263_inter_ssse3;
|
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s->dct_unquantize_mpeg1_intra = dct_unquantize_mpeg1_intra_ssse3;
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s->dct_unquantize_mpeg1_inter = dct_unquantize_mpeg1_inter_ssse3;
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s->dct_unquantize_mpeg2_inter = dct_unquantize_mpeg2_inter_ssse3;
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}
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#endif /* HAVE_SSSE3_INLINE */
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#endif /* HAVE_SSE2_INLINE */
|
|
}
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