mirror of https://github.com/mpv-player/mpv
394 lines
11 KiB
C
394 lines
11 KiB
C
/*
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Copyright (C) 2003 Michael Niedermayer <michaelni@gmx.at>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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* This implementation is based on an algorithm described in
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* "Aria Nosratinia Embedded Post-Processing for
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* Enhancement of Compressed Images (1999)"
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* (http://citeseer.nj.nec.com/nosratinia99embedded.html)
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <inttypes.h>
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#include <math.h>
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#include "../config.h"
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#include "../mp_msg.h"
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#include "../cpudetect.h"
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#include "../libavcodec/avcodec.h"
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#include "../libavcodec/dsputil.h"
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#ifdef HAVE_MALLOC_H
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#include <malloc.h>
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#endif
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#include "img_format.h"
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#include "mp_image.h"
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#include "vf.h"
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#include "../libvo/fastmemcpy.h"
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#define XMIN(a,b) ((a) < (b) ? (a) : (b))
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//===========================================================================//
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const uint8_t __attribute__((aligned(8))) dither[8][8]={
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{ 0, 48, 12, 60, 3, 51, 15, 63, },
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{ 32, 16, 44, 28, 35, 19, 47, 31, },
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{ 8, 56, 4, 52, 11, 59, 7, 55, },
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{ 40, 24, 36, 20, 43, 27, 39, 23, },
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{ 2, 50, 14, 62, 1, 49, 13, 61, },
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{ 34, 18, 46, 30, 33, 17, 45, 29, },
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{ 10, 58, 6, 54, 9, 57, 5, 53, },
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{ 42, 26, 38, 22, 41, 25, 37, 21, },
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};
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const uint8_t offset[127][2]= {
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{0,0},
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{0,0}, {4,4},
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{0,0}, {2,2}, {6,4}, {4,6},
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{0,0}, {5,1}, {2,2}, {7,3}, {4,4}, {1,5}, {6,6}, {3,7},
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{0,0}, {4,0}, {1,1}, {5,1}, {3,2}, {7,2}, {2,3}, {6,3},
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{0,4}, {4,4}, {1,5}, {5,5}, {3,6}, {7,6}, {2,7}, {6,7},
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{0,0}, {0,2}, {0,4}, {0,6}, {1,1}, {1,3}, {1,5}, {1,7},
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{2,0}, {2,2}, {2,4}, {2,6}, {3,1}, {3,3}, {3,5}, {3,7},
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{4,0}, {4,2}, {4,4}, {4,6}, {5,1}, {5,3}, {5,5}, {5,7},
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{6,0}, {6,2}, {6,4}, {6,6}, {7,1}, {7,3}, {7,5}, {7,7},
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{0,0}, {4,4}, {0,4}, {4,0}, {2,2}, {6,6}, {2,6}, {6,2},
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{0,2}, {4,6}, {0,6}, {4,2}, {2,0}, {6,4}, {2,4}, {6,0},
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{1,1}, {5,5}, {1,5}, {5,1}, {3,3}, {7,7}, {3,7}, {7,3},
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{1,3}, {5,7}, {1,7}, {5,3}, {3,1}, {7,5}, {3,5}, {7,1},
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{0,1}, {4,5}, {0,5}, {4,1}, {2,3}, {6,7}, {2,7}, {6,3},
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{0,3}, {4,7}, {0,7}, {4,3}, {2,1}, {6,5}, {2,5}, {6,1},
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{1,0}, {5,4}, {1,4}, {5,0}, {3,2}, {7,6}, {3,6}, {7,2},
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{1,2}, {5,6}, {1,6}, {5,2}, {3,0}, {7,4}, {3,4}, {7,0},
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};
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struct vf_priv_s {
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int log2_count;
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int qp;
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int mpeg2;
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unsigned int outfmt;
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int temp_stride;
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uint8_t *src;
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int16_t *temp;
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AVCodecContext *avctx;
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DSPContext dsp;
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};
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#define SHIFT 22
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static inline void requantize(DCTELEM dst[64], DCTELEM src[64], int qp, uint8_t *permutation){
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int i;
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const int qmul= qp<<1;
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int bias= 0; //FIXME
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unsigned int threshold1, threshold2;
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threshold1= qmul*((1<<3) - bias) - 1;
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threshold2= (threshold1<<1);
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memset(dst, 0, 64*sizeof(DCTELEM));
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dst[0]= (src[0] + 4)>>3;
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for(i=1; i<64; i++){
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int level= src[i];
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if(((unsigned)(level+threshold1))>threshold2){
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const int j= permutation[i];
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dst[j]= (level + 4)>>3;
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}
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}
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}
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static inline void add_block(int16_t *dst, int stride, DCTELEM block[64]){
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int y;
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for(y=0; y<8; y++){
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*(uint32_t*)&dst[0 + y*stride]+= *(uint32_t*)&block[0 + y*8];
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*(uint32_t*)&dst[2 + y*stride]+= *(uint32_t*)&block[2 + y*8];
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*(uint32_t*)&dst[4 + y*stride]+= *(uint32_t*)&block[4 + y*8];
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*(uint32_t*)&dst[6 + y*stride]+= *(uint32_t*)&block[6 + y*8];
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}
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}
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static void store_slice_c(uint8_t *dst, int16_t *src, int dst_stride, int src_stride, int width, int log2_scale){
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int y, x;
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#define STORE(pos) \
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temp= ((src[x + y*src_stride + pos]<<log2_scale) + d[pos])>>6;\
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if(temp & 0x100) temp= ~(temp>>31);\
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dst[x + y*dst_stride + pos]= temp;
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for(y=0; y<8; y++){
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uint8_t *d= dither[y];
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for(x=0; x<width; x+=8){
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int temp;
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STORE(0);
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STORE(1);
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STORE(2);
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STORE(3);
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STORE(4);
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STORE(5);
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STORE(6);
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STORE(7);
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}
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}
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}
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#ifdef HAVE_MMX
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static void store_slice_mmx(uint8_t *dst, int16_t *src, int dst_stride, int src_stride, int width, int log2_scale){
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int y;
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for(y=0; y<8; y++){
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uint8_t *dst1= dst;
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int16_t *src1= src;
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asm volatile(
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"movq (%3), %%mm3 \n\t"
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"movq (%3), %%mm4 \n\t"
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"movd %4, %%mm2 \n\t"
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"pxor %%mm0, %%mm0 \n\t"
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"punpcklbw %%mm0, %%mm3 \n\t"
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"punpckhbw %%mm0, %%mm4 \n\t"
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"psraw %%mm2, %%mm3 \n\t"
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"psraw %%mm2, %%mm4 \n\t"
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"movd %5, %%mm2 \n\t"
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"1: \n\t"
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"movq (%0), %%mm0 \n\t"
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"movq 8(%0), %%mm1 \n\t"
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"paddw %%mm3, %%mm0 \n\t"
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"paddw %%mm4, %%mm1 \n\t"
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"psraw %%mm2, %%mm0 \n\t"
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"psraw %%mm2, %%mm1 \n\t"
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"packuswb %%mm1, %%mm0 \n\t"
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"movq %%mm0, (%1) \n\t"
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"addl $16, %0 \n\t"
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"addl $8, %1 \n\t"
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"cmpl %2, %1 \n\t"
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" jb 1b \n\t"
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: "+r" (src1), "+r"(dst1)
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: "r"(dst + width), "r"(dither[y]), "g"(log2_scale), "g"(6-log2_scale)
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);
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src += src_stride;
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dst += dst_stride;
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}
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// if(width != mmxw)
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// store_slice_c(dst + mmxw, src + mmxw, dst_stride, src_stride, width - mmxw, log2_scale);
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}
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#endif
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static void (*store_slice)(uint8_t *dst, int16_t *src, int dst_stride, int src_stride, int width, int log2_scale)= store_slice_c;
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static void filter(struct vf_priv_s *p, uint8_t *dst, uint8_t *src, int dst_stride, int src_stride, int width, int height, uint8_t *qp_store, int qp_stride, int is_luma){
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int x, y, i;
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const int count= 1<<p->log2_count;
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const int stride= is_luma ? p->temp_stride : (p->temp_stride/2 + 8);
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uint64_t block_align[32];
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DCTELEM *block = (DCTELEM *)block_align;
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DCTELEM *block2= (DCTELEM *)(block_align+16);
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for(y=0; y<height; y++){
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int index= 8 + 8*stride + y*stride;
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memcpy(p->src + index, src + y*src_stride, width);
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for(x=0; x<8; x++){
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p->src[index - x - 1]= p->src[index + x ];
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p->src[index + width + x ]= p->src[index + width - x - 1];
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}
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}
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for(y=0; y<8; y++){
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memcpy(p->src + ( 7-y)*stride, p->src + ( y+8)*stride, stride);
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memcpy(p->src + (height+8+y)*stride, p->src + (height-y+7)*stride, stride);
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}
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//FIXME (try edge emu)
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for(y=0; y<height+8; y+=8){
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memset(p->temp + (8+y)*stride, 0, 8*stride*sizeof(int16_t));
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for(x=0; x<width+8; x+=8){
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const int qps= 3 + is_luma;
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int qp;
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if(p->qp)
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qp= p->qp;
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else{
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qp= qp_store[ (XMIN(x, width-1)>>qps) + (XMIN(y, height-1)>>qps) * qp_stride];
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if(p->mpeg2) qp>>=1;
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}
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for(i=0; i<count; i++){
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const int x1= x + offset[i+count-1][0];
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const int y1= y + offset[i+count-1][1];
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const int index= x1 + y1*stride;
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p->dsp.get_pixels(block, p->src + index, stride);
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p->dsp.fdct(block);
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requantize(block2, block, qp, p->dsp.idct_permutation);
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p->dsp.idct(block2);
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add_block(p->temp + index, stride, block2);
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}
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}
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if(y)
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store_slice(dst + (y-8)*dst_stride, p->temp + 8 + y*stride, dst_stride, stride, width, 6-p->log2_count);
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}
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#if 0
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for(y=0; y<height; y++){
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for(x=0; x<width; x++){
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if((((x>>6) ^ (y>>6)) & 1) == 0)
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dst[x + y*dst_stride]= p->src[8 + 8*stride + x + y*stride];
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if((x&63) == 0 || (y&63)==0)
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dst[x + y*dst_stride] += 128;
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}
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}
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#endif
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//FIXME reorder for better caching
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}
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static int config(struct vf_instance_s* vf,
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int width, int height, int d_width, int d_height,
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unsigned int flags, unsigned int outfmt){
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vf->priv->temp_stride= (width+16+15)&(~15);
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vf->priv->temp= malloc(vf->priv->temp_stride*(height+16)*sizeof(int16_t));
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vf->priv->src = malloc(vf->priv->temp_stride*(height+16)*sizeof(uint8_t));
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return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
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}
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static void get_image(struct vf_instance_s* vf, mp_image_t *mpi){
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if(mpi->flags&MP_IMGFLAG_PRESERVE) return; // don't change
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if(mpi->imgfmt!=vf->priv->outfmt) return; // colorspace differ
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// ok, we can do pp in-place (or pp disabled):
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vf->dmpi=vf_get_image(vf->next,mpi->imgfmt,
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mpi->type, mpi->flags, mpi->w, mpi->h);
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mpi->planes[0]=vf->dmpi->planes[0];
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mpi->stride[0]=vf->dmpi->stride[0];
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mpi->width=vf->dmpi->width;
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if(mpi->flags&MP_IMGFLAG_PLANAR){
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mpi->planes[1]=vf->dmpi->planes[1];
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mpi->planes[2]=vf->dmpi->planes[2];
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mpi->stride[1]=vf->dmpi->stride[1];
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mpi->stride[2]=vf->dmpi->stride[2];
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}
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mpi->flags|=MP_IMGFLAG_DIRECT;
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}
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static int put_image(struct vf_instance_s* vf, mp_image_t *mpi){
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mp_image_t *dmpi;
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if(!(mpi->flags&MP_IMGFLAG_DIRECT)){
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// no DR, so get a new image! hope we'll get DR buffer:
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vf->dmpi=vf_get_image(vf->next,vf->priv->outfmt,
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MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
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mpi->w,mpi->h);
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}
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dmpi= vf->dmpi;
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vf->priv->mpeg2= mpi->qscale_type;
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filter(vf->priv, dmpi->planes[0], mpi->planes[0], dmpi->stride[0], mpi->stride[0], mpi->w, mpi->h, mpi->qscale, mpi->qstride, 1);
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filter(vf->priv, dmpi->planes[1], mpi->planes[1], dmpi->stride[1], mpi->stride[1], mpi->w>>1, mpi->h>>1, mpi->qscale, mpi->qstride, 0);
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filter(vf->priv, dmpi->planes[2], mpi->planes[2], dmpi->stride[2], mpi->stride[2], mpi->w>>1, mpi->h>>1, mpi->qscale, mpi->qstride, 0);
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vf_clone_mpi_attributes(dmpi, mpi);
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#ifdef HAVE_MMX
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if(gCpuCaps.hasMMX) asm volatile ("emms\n\t");
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#endif
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#ifdef HAVE_MMX2
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if(gCpuCaps.hasMMX2) asm volatile ("sfence\n\t");
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#endif
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return vf_next_put_image(vf,dmpi);
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}
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static void uninit(struct vf_instance_s* vf){
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if(!vf->priv) return;
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if(vf->priv->temp) free(vf->priv->temp);
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vf->priv->temp= NULL;
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if(vf->priv->src) free(vf->priv->src);
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vf->priv->src= NULL;
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if(vf->priv->avctx) free(vf->priv->avctx);
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vf->priv->avctx= NULL;
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free(vf->priv);
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vf->priv=NULL;
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}
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//===========================================================================//
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static int query_format(struct vf_instance_s* vf, unsigned int fmt){
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switch(fmt)
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{
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case IMGFMT_YV12:
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case IMGFMT_I420:
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case IMGFMT_IYUV:
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return vf_next_query_format(vf,vf->priv->outfmt);
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}
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return 0;
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}
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static unsigned int fmt_list[]={
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IMGFMT_YV12,
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IMGFMT_I420,
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IMGFMT_IYUV,
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0
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};
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static int open(vf_instance_t *vf, char* args){
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vf->config=config;
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vf->put_image=put_image;
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vf->get_image=get_image;
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vf->query_format=query_format;
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vf->uninit=uninit;
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vf->priv=malloc(sizeof(struct vf_priv_s));
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memset(vf->priv, 0, sizeof(struct vf_priv_s));
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avcodec_init();
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vf->priv->avctx= avcodec_alloc_context();
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dsputil_init(&vf->priv->dsp, vf->priv->avctx);
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if(gCpuCaps.hasMMX){
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store_slice= store_slice_mmx;
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}
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vf->priv->log2_count= 6;
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if (args) sscanf(args, "%d:%d", &vf->priv->log2_count, &vf->priv->qp);
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// check csp:
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vf->priv->outfmt=vf_match_csp(&vf->next,fmt_list,IMGFMT_YV12);
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if(!vf->priv->outfmt)
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{
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uninit(vf);
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return 0; // no csp match :(
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}
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return 1;
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}
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vf_info_t vf_info_spp = {
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"simple postprocess",
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"spp",
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"Michael Niedermayer",
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"",
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open,
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NULL
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};
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//===========================================================================//
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