mirror of
https://git.ffmpeg.org/ffmpeg.git
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492cd3a920
Originally committed as revision 1327 to svn://svn.ffmpeg.org/ffmpeg/trunk
1102 lines
35 KiB
C
1102 lines
35 KiB
C
/*
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* huffyuv codec for libavcodec
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*
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* Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
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*
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* This library 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 of the License, or (at your option) any later version.
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*
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* This library 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 this library; 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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* see http://www.pcisys.net/~melanson/codecs/huffyuv.txt for a description of
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* the algorithm used
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*/
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#include "common.h"
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#include "avcodec.h"
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#include "dsputil.h"
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#ifndef INT64_MAX
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#define INT64_MAX 9223372036854775807LL
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#endif
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#define VLC_BITS 11
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typedef enum Predictor{
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LEFT= 0,
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PLANE,
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MEDIAN,
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} Predictor;
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typedef struct HYuvContext{
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AVCodecContext *avctx;
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Predictor predictor;
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GetBitContext gb;
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PutBitContext pb;
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int interlaced;
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int decorrelate;
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int bitstream_bpp;
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int version;
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int yuy2; //use yuy2 instead of 422P
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int bgr32; //use bgr32 instead of bgr24
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int width, height;
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int flags;
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int picture_number;
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int last_slice_end;
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uint8_t __align8 temp[3][2500];
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uint64_t stats[3][256];
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uint8_t len[3][256];
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uint32_t bits[3][256];
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VLC vlc[3];
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AVFrame picture;
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uint8_t __align8 bitstream_buffer[1024*1024*3]; //FIXME dynamic alloc or some other solution
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DSPContext dsp;
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}HYuvContext;
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static inline void bswap_buf(uint32_t *dst, uint32_t *src, int w){
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int i;
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for(i=0; i+8<=w; i+=8){
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dst[i+0]= bswap_32(src[i+0]);
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dst[i+1]= bswap_32(src[i+1]);
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dst[i+2]= bswap_32(src[i+2]);
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dst[i+3]= bswap_32(src[i+3]);
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dst[i+4]= bswap_32(src[i+4]);
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dst[i+5]= bswap_32(src[i+5]);
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dst[i+6]= bswap_32(src[i+6]);
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dst[i+7]= bswap_32(src[i+7]);
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}
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for(;i<w; i++){
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dst[i+0]= bswap_32(src[i+0]);
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}
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}
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static inline int add_left_prediction(uint8_t *dst, uint8_t *src, int w, int acc){
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int i;
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for(i=0; i<w-1; i++){
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acc+= src[i];
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dst[i]= acc;
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i++;
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acc+= src[i];
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dst[i]= acc;
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}
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for(; i<w; i++){
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acc+= src[i];
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dst[i]= acc;
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}
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return acc;
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}
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static inline void add_median_prediction(uint8_t *dst, uint8_t *src1, uint8_t *diff, int w, int *left, int *left_top){
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int i;
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uint8_t l, lt;
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l= *left;
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lt= *left_top;
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for(i=0; i<w; i++){
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l= mid_pred(l, src1[i], (l + src1[i] - lt)&0xFF) + diff[i];
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lt= src1[i];
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dst[i]= l;
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}
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*left= l;
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*left_top= lt;
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}
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//FIXME optimize
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static inline void sub_median_prediction(uint8_t *dst, uint8_t *src1, uint8_t *src2, int w, int *left, int *left_top){
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int i;
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uint8_t l, lt;
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l= *left;
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lt= *left_top;
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for(i=0; i<w; i++){
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const int pred= mid_pred(l, src1[i], (l + src1[i] - lt)&0xFF);
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lt= src1[i];
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l= src2[i];
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dst[i]= l - pred;
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}
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*left= l;
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*left_top= lt;
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}
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static inline void add_left_prediction_bgr32(uint8_t *dst, uint8_t *src, int w, int *red, int *green, int *blue){
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int i;
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int r,g,b;
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r= *red;
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g= *green;
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b= *blue;
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for(i=0; i<w; i++){
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b+= src[4*i+0];
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g+= src[4*i+1];
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r+= src[4*i+2];
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dst[4*i+0]= b;
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dst[4*i+1]= g;
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dst[4*i+2]= r;
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}
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*red= r;
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*green= g;
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*blue= b;
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}
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static inline int sub_left_prediction(HYuvContext *s, uint8_t *dst, uint8_t *src, int w, int left){
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int i;
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if(w<32){
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for(i=0; i<w; i++){
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const int temp= src[i];
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dst[i]= temp - left;
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left= temp;
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}
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return left;
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}else{
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for(i=0; i<16; i++){
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const int temp= src[i];
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dst[i]= temp - left;
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left= temp;
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}
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s->dsp.diff_bytes(dst+16, src+16, src+15, w-16);
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return src[w-1];
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}
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}
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static void read_len_table(uint8_t *dst, GetBitContext *gb){
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int i, val, repeat;
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for(i=0; i<256;){
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repeat= get_bits(gb, 3);
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val = get_bits(gb, 5);
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if(repeat==0)
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repeat= get_bits(gb, 8);
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//printf("%d %d\n", val, repeat);
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while (repeat--)
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dst[i++] = val;
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}
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}
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static int generate_bits_table(uint32_t *dst, uint8_t *len_table){
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int len, index;
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uint32_t bits=0;
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for(len=32; len>0; len--){
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int bit= 1<<(32-len);
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for(index=0; index<256; index++){
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if(len_table[index]==len){
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if(bits & (bit-1)){
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fprintf(stderr, "Error generating huffman table\n");
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return -1;
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}
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dst[index]= bits>>(32-len);
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bits+= bit;
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}
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}
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}
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return 0;
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}
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static void generate_len_table(uint8_t *dst, uint64_t *stats, int size){
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uint64_t counts[2*size];
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int up[2*size];
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int offset, i, next;
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for(offset=1; ; offset<<=1){
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for(i=0; i<size; i++){
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counts[i]= stats[i] + offset - 1;
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}
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for(next=size; next<size*2; next++){
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uint64_t min1, min2;
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int min1_i, min2_i;
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min1=min2= INT64_MAX;
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min1_i= min2_i=-1;
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for(i=0; i<next; i++){
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if(min2 > counts[i]){
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if(min1 > counts[i]){
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min2= min1;
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min2_i= min1_i;
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min1= counts[i];
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min1_i= i;
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}else{
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min2= counts[i];
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min2_i= i;
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}
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}
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}
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if(min2==INT64_MAX) break;
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counts[next]= min1 + min2;
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counts[min1_i]=
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counts[min2_i]= INT64_MAX;
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up[min1_i]=
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up[min2_i]= next;
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up[next]= -1;
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}
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for(i=0; i<size; i++){
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int len;
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int index=i;
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for(len=0; up[index] != -1; len++)
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index= up[index];
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if(len > 32) break;
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dst[i]= len;
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}
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if(i==size) break;
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}
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}
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static int read_huffman_tables(HYuvContext *s, uint8_t *src, int length){
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GetBitContext gb;
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int i;
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init_get_bits(&gb, src, length);
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for(i=0; i<3; i++){
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read_len_table(s->len[i], &gb);
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if(generate_bits_table(s->bits[i], s->len[i])<0){
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return -1;
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}
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#if 0
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for(j=0; j<256; j++){
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printf("%6X, %2d, %3d\n", s->bits[i][j], s->len[i][j], j);
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}
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#endif
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init_vlc(&s->vlc[i], VLC_BITS, 256, s->len[i], 1, 1, s->bits[i], 4, 4);
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}
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return 0;
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}
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static int read_old_huffman_tables(HYuvContext *s){
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#if 0
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GetBitContext gb;
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int i;
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init_get_bits(&gb, classic_shift_luma, sizeof(classic_shift_luma));
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read_len_table(s->len[0], &gb);
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init_get_bits(&gb, classic_shift_chroma, sizeof(classic_shift_chroma));
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read_len_table(s->len[1], &gb);
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for(i=0; i<256; i++) s->bits[0][i] = classic_add_luma [i];
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for(i=0; i<256; i++) s->bits[1][i] = classic_add_chroma[i];
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if(s->bitstream_bpp >= 24){
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memcpy(s->bits[1], s->bits[0], 256*sizeof(uint32_t));
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memcpy(s->len[1] , s->len [0], 256*sizeof(uint8_t));
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}
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memcpy(s->bits[2], s->bits[1], 256*sizeof(uint32_t));
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memcpy(s->len[2] , s->len [1], 256*sizeof(uint8_t));
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for(i=0; i<3; i++)
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init_vlc(&s->vlc[i], VLC_BITS, 256, s->len[i], 1, 1, s->bits[i], 4, 4);
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return 0;
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#else
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fprintf(stderr, "v1 huffyuv is not supported \n");
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return -1;
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#endif
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}
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static int decode_init(AVCodecContext *avctx)
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{
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HYuvContext *s = avctx->priv_data;
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int width, height;
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s->avctx= avctx;
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s->flags= avctx->flags;
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dsputil_init(&s->dsp, avctx->dsp_mask);
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width= s->width= avctx->width;
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height= s->height= avctx->height;
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avctx->coded_frame= &s->picture;
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s->bgr32=1;
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assert(width && height);
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//if(avctx->extradata)
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// printf("extradata:%X, extradata_size:%d\n", *(uint32_t*)avctx->extradata, avctx->extradata_size);
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if(avctx->extradata_size){
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if((avctx->bits_per_sample&7) && avctx->bits_per_sample != 12)
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s->version=1; // do such files exist at all?
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else
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s->version=2;
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}else
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s->version=0;
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if(s->version==2){
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int method;
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method= ((uint8_t*)avctx->extradata)[0];
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s->decorrelate= method&64 ? 1 : 0;
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s->predictor= method&63;
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s->bitstream_bpp= ((uint8_t*)avctx->extradata)[1];
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if(s->bitstream_bpp==0)
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s->bitstream_bpp= avctx->bits_per_sample&~7;
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if(read_huffman_tables(s, ((uint8_t*)avctx->extradata)+4, avctx->extradata_size) < 0)
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return -1;
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}else{
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switch(avctx->bits_per_sample&7){
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case 1:
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s->predictor= LEFT;
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s->decorrelate= 0;
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break;
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case 2:
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s->predictor= LEFT;
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s->decorrelate= 1;
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break;
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case 3:
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s->predictor= PLANE;
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s->decorrelate= avctx->bits_per_sample >= 24;
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break;
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case 4:
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s->predictor= MEDIAN;
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s->decorrelate= 0;
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break;
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default:
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s->predictor= LEFT; //OLD
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s->decorrelate= 0;
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break;
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}
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s->bitstream_bpp= avctx->bits_per_sample & ~7;
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if(read_old_huffman_tables(s) < 0)
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return -1;
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}
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s->interlaced= height > 288;
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switch(s->bitstream_bpp){
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case 12:
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avctx->pix_fmt = PIX_FMT_YUV420P;
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break;
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case 16:
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if(s->yuy2){
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avctx->pix_fmt = PIX_FMT_YUV422;
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}else{
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avctx->pix_fmt = PIX_FMT_YUV422P;
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}
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break;
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case 24:
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case 32:
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if(s->bgr32){
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avctx->pix_fmt = PIX_FMT_BGRA32;
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}else{
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avctx->pix_fmt = PIX_FMT_BGR24;
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}
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break;
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default:
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assert(0);
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}
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// printf("pred:%d bpp:%d hbpp:%d il:%d\n", s->predictor, s->bitstream_bpp, avctx->bits_per_sample, s->interlaced);
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return 0;
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}
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static void store_table(HYuvContext *s, uint8_t *len){
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int i;
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int index= s->avctx->extradata_size;
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for(i=0; i<256;){
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int cur=i;
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int val= len[i];
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int repeat;
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for(; i<256 && len[i]==val; i++);
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repeat= i - cur;
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if(repeat>7){
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((uint8_t*)s->avctx->extradata)[index++]= val;
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((uint8_t*)s->avctx->extradata)[index++]= repeat;
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}else{
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((uint8_t*)s->avctx->extradata)[index++]= val | (repeat<<5);
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}
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}
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s->avctx->extradata_size= index;
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}
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static int encode_init(AVCodecContext *avctx)
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{
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HYuvContext *s = avctx->priv_data;
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int i, j, width, height;
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s->avctx= avctx;
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s->flags= avctx->flags;
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dsputil_init(&s->dsp, avctx->dsp_mask);
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width= s->width= avctx->width;
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height= s->height= avctx->height;
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assert(width && height);
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avctx->extradata= av_mallocz(1024*10);
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avctx->stats_out= av_mallocz(1024*10);
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s->version=2;
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avctx->coded_frame= &s->picture;
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s->picture.pict_type= FF_I_TYPE;
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s->picture.key_frame= 1;
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switch(avctx->pix_fmt){
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case PIX_FMT_YUV420P:
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if(avctx->strict_std_compliance>=0){
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fprintf(stderr, "YV12-huffyuv is experimental, there WILL be no compatbility! (use (v)strict=-1)\n");
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return -1;
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}
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s->bitstream_bpp= 12;
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break;
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case PIX_FMT_YUV422P:
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s->bitstream_bpp= 16;
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break;
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default:
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fprintf(stderr, "format not supported\n");
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return -1;
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}
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avctx->bits_per_sample= s->bitstream_bpp;
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s->decorrelate= s->bitstream_bpp >= 24;
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s->predictor= avctx->prediction_method;
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((uint8_t*)avctx->extradata)[0]= s->predictor;
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((uint8_t*)avctx->extradata)[1]= s->bitstream_bpp;
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((uint8_t*)avctx->extradata)[2]=
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((uint8_t*)avctx->extradata)[3]= 0;
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s->avctx->extradata_size= 4;
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if(avctx->stats_in){
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char *p= avctx->stats_in;
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for(i=0; i<3; i++)
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for(j=0; j<256; j++)
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s->stats[i][j]= 1;
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for(;;){
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for(i=0; i<3; i++){
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char *next;
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for(j=0; j<256; j++){
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s->stats[i][j]+= strtol(p, &next, 0);
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if(next==p) return -1;
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p=next;
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}
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}
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if(p[0]==0 || p[1]==0 || p[2]==0) break;
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}
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}else{
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for(i=0; i<3; i++)
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for(j=0; j<256; j++){
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int d= FFMIN(j, 256-j);
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s->stats[i][j]= 100000000/(d+1);
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}
|
|
}
|
|
|
|
for(i=0; i<3; i++){
|
|
generate_len_table(s->len[i], s->stats[i], 256);
|
|
|
|
if(generate_bits_table(s->bits[i], s->len[i])<0){
|
|
return -1;
|
|
}
|
|
|
|
store_table(s, s->len[i]);
|
|
}
|
|
|
|
for(i=0; i<3; i++)
|
|
for(j=0; j<256; j++)
|
|
s->stats[i][j]= 0;
|
|
|
|
s->interlaced= height > 288;
|
|
|
|
// printf("pred:%d bpp:%d hbpp:%d il:%d\n", s->predictor, s->bitstream_bpp, avctx->bits_per_sample, s->interlaced);
|
|
|
|
s->picture_number=0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void decode_422_bitstream(HYuvContext *s, int count){
|
|
int i;
|
|
|
|
count/=2;
|
|
|
|
for(i=0; i<count; i++){
|
|
s->temp[0][2*i ]= get_vlc2(&s->gb, s->vlc[0].table, VLC_BITS, 3);
|
|
s->temp[1][ i ]= get_vlc2(&s->gb, s->vlc[1].table, VLC_BITS, 3);
|
|
s->temp[0][2*i+1]= get_vlc2(&s->gb, s->vlc[0].table, VLC_BITS, 3);
|
|
s->temp[2][ i ]= get_vlc2(&s->gb, s->vlc[2].table, VLC_BITS, 3);
|
|
}
|
|
}
|
|
|
|
static void decode_gray_bitstream(HYuvContext *s, int count){
|
|
int i;
|
|
|
|
count/=2;
|
|
|
|
for(i=0; i<count; i++){
|
|
s->temp[0][2*i ]= get_vlc2(&s->gb, s->vlc[0].table, VLC_BITS, 3);
|
|
s->temp[0][2*i+1]= get_vlc2(&s->gb, s->vlc[0].table, VLC_BITS, 3);
|
|
}
|
|
}
|
|
|
|
static void encode_422_bitstream(HYuvContext *s, int count){
|
|
int i;
|
|
|
|
count/=2;
|
|
if(s->flags&CODEC_FLAG_PASS1){
|
|
for(i=0; i<count; i++){
|
|
s->stats[0][ s->temp[0][2*i ] ]++;
|
|
s->stats[1][ s->temp[1][ i ] ]++;
|
|
s->stats[0][ s->temp[0][2*i+1] ]++;
|
|
s->stats[2][ s->temp[2][ i ] ]++;
|
|
}
|
|
}else{
|
|
for(i=0; i<count; i++){
|
|
put_bits(&s->pb, s->len[0][ s->temp[0][2*i ] ], s->bits[0][ s->temp[0][2*i ] ]);
|
|
put_bits(&s->pb, s->len[1][ s->temp[1][ i ] ], s->bits[1][ s->temp[1][ i ] ]);
|
|
put_bits(&s->pb, s->len[0][ s->temp[0][2*i+1] ], s->bits[0][ s->temp[0][2*i+1] ]);
|
|
put_bits(&s->pb, s->len[2][ s->temp[2][ i ] ], s->bits[2][ s->temp[2][ i ] ]);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void encode_gray_bitstream(HYuvContext *s, int count){
|
|
int i;
|
|
|
|
count/=2;
|
|
if(s->flags&CODEC_FLAG_PASS1){
|
|
for(i=0; i<count; i++){
|
|
s->stats[0][ s->temp[0][2*i ] ]++;
|
|
s->stats[0][ s->temp[0][2*i+1] ]++;
|
|
}
|
|
}else{
|
|
for(i=0; i<count; i++){
|
|
put_bits(&s->pb, s->len[0][ s->temp[0][2*i ] ], s->bits[0][ s->temp[0][2*i ] ]);
|
|
put_bits(&s->pb, s->len[0][ s->temp[0][2*i+1] ], s->bits[0][ s->temp[0][2*i+1] ]);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void decode_bgr_bitstream(HYuvContext *s, int count){
|
|
int i;
|
|
|
|
if(s->decorrelate){
|
|
if(s->bitstream_bpp==24){
|
|
for(i=0; i<count; i++){
|
|
s->temp[0][4*i+1]= get_vlc2(&s->gb, s->vlc[1].table, VLC_BITS, 3);
|
|
s->temp[0][4*i ]= get_vlc2(&s->gb, s->vlc[0].table, VLC_BITS, 3) + s->temp[0][4*i+1];
|
|
s->temp[0][4*i+2]= get_vlc2(&s->gb, s->vlc[2].table, VLC_BITS, 3) + s->temp[0][4*i+1];
|
|
}
|
|
}else{
|
|
for(i=0; i<count; i++){
|
|
s->temp[0][4*i+1]= get_vlc2(&s->gb, s->vlc[1].table, VLC_BITS, 3);
|
|
s->temp[0][4*i ]= get_vlc2(&s->gb, s->vlc[0].table, VLC_BITS, 3) + s->temp[0][4*i+1];
|
|
s->temp[0][4*i+2]= get_vlc2(&s->gb, s->vlc[2].table, VLC_BITS, 3) + s->temp[0][4*i+1];
|
|
get_vlc2(&s->gb, s->vlc[2].table, VLC_BITS, 3); //?!
|
|
}
|
|
}
|
|
}else{
|
|
if(s->bitstream_bpp==24){
|
|
for(i=0; i<count; i++){
|
|
s->temp[0][4*i ]= get_vlc2(&s->gb, s->vlc[0].table, VLC_BITS, 3);
|
|
s->temp[0][4*i+1]= get_vlc2(&s->gb, s->vlc[1].table, VLC_BITS, 3);
|
|
s->temp[0][4*i+2]= get_vlc2(&s->gb, s->vlc[2].table, VLC_BITS, 3);
|
|
}
|
|
}else{
|
|
for(i=0; i<count; i++){
|
|
s->temp[0][4*i ]= get_vlc2(&s->gb, s->vlc[0].table, VLC_BITS, 3);
|
|
s->temp[0][4*i+1]= get_vlc2(&s->gb, s->vlc[1].table, VLC_BITS, 3);
|
|
s->temp[0][4*i+2]= get_vlc2(&s->gb, s->vlc[2].table, VLC_BITS, 3);
|
|
get_vlc2(&s->gb, s->vlc[2].table, VLC_BITS, 3); //?!
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void draw_slice(HYuvContext *s, int y){
|
|
int h, cy;
|
|
UINT8 *src_ptr[3];
|
|
|
|
if(s->avctx->draw_horiz_band==NULL)
|
|
return;
|
|
|
|
h= y - s->last_slice_end;
|
|
y -= h;
|
|
|
|
if(s->bitstream_bpp==12){
|
|
cy= y>>1;
|
|
}else{
|
|
cy= y;
|
|
}
|
|
|
|
src_ptr[0] = s->picture.data[0] + s->picture.linesize[0]*y;
|
|
src_ptr[1] = s->picture.data[1] + s->picture.linesize[1]*cy;
|
|
src_ptr[2] = s->picture.data[2] + s->picture.linesize[2]*cy;
|
|
emms_c();
|
|
|
|
s->avctx->draw_horiz_band(s->avctx, src_ptr, s->picture.linesize[0], y, s->width, h);
|
|
|
|
s->last_slice_end= y + h;
|
|
}
|
|
|
|
static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8_t *buf, int buf_size){
|
|
HYuvContext *s = avctx->priv_data;
|
|
const int width= s->width;
|
|
const int width2= s->width>>1;
|
|
const int height= s->height;
|
|
int fake_ystride, fake_ustride, fake_vstride;
|
|
AVFrame * const p= &s->picture;
|
|
|
|
AVFrame *picture = data;
|
|
|
|
*data_size = 0;
|
|
|
|
/* no supplementary picture */
|
|
if (buf_size == 0)
|
|
return 0;
|
|
|
|
bswap_buf((uint32_t*)s->bitstream_buffer, (uint32_t*)buf, buf_size/4);
|
|
|
|
init_get_bits(&s->gb, s->bitstream_buffer, buf_size);
|
|
|
|
p->reference= 0;
|
|
if(avctx->get_buffer(avctx, p) < 0){
|
|
fprintf(stderr, "get_buffer() failed\n");
|
|
return -1;
|
|
}
|
|
|
|
fake_ystride= s->interlaced ? p->linesize[0]*2 : p->linesize[0];
|
|
fake_ustride= s->interlaced ? p->linesize[1]*2 : p->linesize[1];
|
|
fake_vstride= s->interlaced ? p->linesize[2]*2 : p->linesize[2];
|
|
|
|
s->last_slice_end= 0;
|
|
|
|
if(s->bitstream_bpp<24){
|
|
int y, cy;
|
|
int lefty, leftu, leftv;
|
|
int lefttopy, lefttopu, lefttopv;
|
|
|
|
if(s->yuy2){
|
|
p->data[0][3]= get_bits(&s->gb, 8);
|
|
p->data[0][2]= get_bits(&s->gb, 8);
|
|
p->data[0][1]= get_bits(&s->gb, 8);
|
|
p->data[0][0]= get_bits(&s->gb, 8);
|
|
|
|
fprintf(stderr, "YUY2 output isnt implemenetd yet\n");
|
|
return -1;
|
|
}else{
|
|
|
|
leftv= p->data[2][0]= get_bits(&s->gb, 8);
|
|
lefty= p->data[0][1]= get_bits(&s->gb, 8);
|
|
leftu= p->data[1][0]= get_bits(&s->gb, 8);
|
|
p->data[0][0]= get_bits(&s->gb, 8);
|
|
|
|
switch(s->predictor){
|
|
case LEFT:
|
|
case PLANE:
|
|
decode_422_bitstream(s, width-2);
|
|
lefty= add_left_prediction(p->data[0] + 2, s->temp[0], width-2, lefty);
|
|
if(!(s->flags&CODEC_FLAG_GRAY)){
|
|
leftu= add_left_prediction(p->data[1] + 1, s->temp[1], width2-1, leftu);
|
|
leftv= add_left_prediction(p->data[2] + 1, s->temp[2], width2-1, leftv);
|
|
}
|
|
|
|
for(cy=y=1; y<s->height; y++,cy++){
|
|
uint8_t *ydst, *udst, *vdst;
|
|
|
|
if(s->bitstream_bpp==12){
|
|
decode_gray_bitstream(s, width);
|
|
|
|
ydst= p->data[0] + p->linesize[0]*y;
|
|
|
|
lefty= add_left_prediction(ydst, s->temp[0], width, lefty);
|
|
if(s->predictor == PLANE){
|
|
if(y>s->interlaced)
|
|
s->dsp.add_bytes(ydst, ydst - fake_ystride, width);
|
|
}
|
|
y++;
|
|
if(y>=s->height) break;
|
|
}
|
|
|
|
draw_slice(s, y);
|
|
|
|
ydst= p->data[0] + p->linesize[0]*y;
|
|
udst= p->data[1] + p->linesize[1]*cy;
|
|
vdst= p->data[2] + p->linesize[2]*cy;
|
|
|
|
decode_422_bitstream(s, width);
|
|
lefty= add_left_prediction(ydst, s->temp[0], width, lefty);
|
|
if(!(s->flags&CODEC_FLAG_GRAY)){
|
|
leftu= add_left_prediction(udst, s->temp[1], width2, leftu);
|
|
leftv= add_left_prediction(vdst, s->temp[2], width2, leftv);
|
|
}
|
|
if(s->predictor == PLANE){
|
|
if(cy>s->interlaced){
|
|
s->dsp.add_bytes(ydst, ydst - fake_ystride, width);
|
|
if(!(s->flags&CODEC_FLAG_GRAY)){
|
|
s->dsp.add_bytes(udst, udst - fake_ustride, width2);
|
|
s->dsp.add_bytes(vdst, vdst - fake_vstride, width2);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
draw_slice(s, height);
|
|
|
|
break;
|
|
case MEDIAN:
|
|
/* first line except first 2 pixels is left predicted */
|
|
decode_422_bitstream(s, width-2);
|
|
lefty= add_left_prediction(p->data[0] + 2, s->temp[0], width-2, lefty);
|
|
if(!(s->flags&CODEC_FLAG_GRAY)){
|
|
leftu= add_left_prediction(p->data[1] + 1, s->temp[1], width2-1, leftu);
|
|
leftv= add_left_prediction(p->data[2] + 1, s->temp[2], width2-1, leftv);
|
|
}
|
|
|
|
cy=y=1;
|
|
|
|
/* second line is left predicted for interlaced case */
|
|
if(s->interlaced){
|
|
decode_422_bitstream(s, width);
|
|
lefty= add_left_prediction(p->data[0] + p->linesize[0], s->temp[0], width, lefty);
|
|
if(!(s->flags&CODEC_FLAG_GRAY)){
|
|
leftu= add_left_prediction(p->data[1] + p->linesize[2], s->temp[1], width2, leftu);
|
|
leftv= add_left_prediction(p->data[2] + p->linesize[1], s->temp[2], width2, leftv);
|
|
}
|
|
y++; cy++;
|
|
}
|
|
|
|
/* next 4 pixels are left predicted too */
|
|
decode_422_bitstream(s, 4);
|
|
lefty= add_left_prediction(p->data[0] + fake_ystride, s->temp[0], 4, lefty);
|
|
if(!(s->flags&CODEC_FLAG_GRAY)){
|
|
leftu= add_left_prediction(p->data[1] + fake_ustride, s->temp[1], 2, leftu);
|
|
leftv= add_left_prediction(p->data[2] + fake_vstride, s->temp[2], 2, leftv);
|
|
}
|
|
|
|
/* next line except the first 4 pixels is median predicted */
|
|
lefttopy= p->data[0][3];
|
|
decode_422_bitstream(s, width-4);
|
|
add_median_prediction(p->data[0] + fake_ystride+4, p->data[0]+4, s->temp[0], width-4, &lefty, &lefttopy);
|
|
if(!(s->flags&CODEC_FLAG_GRAY)){
|
|
lefttopu= p->data[1][1];
|
|
lefttopv= p->data[2][1];
|
|
add_median_prediction(p->data[1] + fake_ustride+2, p->data[1]+2, s->temp[1], width2-2, &leftu, &lefttopu);
|
|
add_median_prediction(p->data[2] + fake_vstride+2, p->data[2]+2, s->temp[2], width2-2, &leftv, &lefttopv);
|
|
}
|
|
y++; cy++;
|
|
|
|
for(; y<height; y++,cy++){
|
|
uint8_t *ydst, *udst, *vdst;
|
|
|
|
if(s->bitstream_bpp==12){
|
|
while(2*cy > y){
|
|
decode_gray_bitstream(s, width);
|
|
ydst= p->data[0] + p->linesize[0]*y;
|
|
add_median_prediction(ydst, ydst - fake_ystride, s->temp[0], width, &lefty, &lefttopy);
|
|
y++;
|
|
}
|
|
if(y>=height) break;
|
|
}
|
|
draw_slice(s, y);
|
|
|
|
decode_422_bitstream(s, width);
|
|
|
|
ydst= p->data[0] + p->linesize[0]*y;
|
|
udst= p->data[1] + p->linesize[1]*cy;
|
|
vdst= p->data[2] + p->linesize[2]*cy;
|
|
|
|
add_median_prediction(ydst, ydst - fake_ystride, s->temp[0], width, &lefty, &lefttopy);
|
|
if(!(s->flags&CODEC_FLAG_GRAY)){
|
|
add_median_prediction(udst, udst - fake_ustride, s->temp[1], width2, &leftu, &lefttopu);
|
|
add_median_prediction(vdst, vdst - fake_vstride, s->temp[2], width2, &leftv, &lefttopv);
|
|
}
|
|
}
|
|
|
|
draw_slice(s, height);
|
|
break;
|
|
}
|
|
}
|
|
}else{
|
|
int y;
|
|
int leftr, leftg, leftb;
|
|
const int last_line= (height-1)*p->linesize[0];
|
|
|
|
if(s->bitstream_bpp==32){
|
|
p->data[0][last_line+3]= get_bits(&s->gb, 8);
|
|
leftr= p->data[0][last_line+2]= get_bits(&s->gb, 8);
|
|
leftg= p->data[0][last_line+1]= get_bits(&s->gb, 8);
|
|
leftb= p->data[0][last_line+0]= get_bits(&s->gb, 8);
|
|
}else{
|
|
leftr= p->data[0][last_line+2]= get_bits(&s->gb, 8);
|
|
leftg= p->data[0][last_line+1]= get_bits(&s->gb, 8);
|
|
leftb= p->data[0][last_line+0]= get_bits(&s->gb, 8);
|
|
skip_bits(&s->gb, 8);
|
|
}
|
|
|
|
if(s->bgr32){
|
|
switch(s->predictor){
|
|
case LEFT:
|
|
case PLANE:
|
|
decode_bgr_bitstream(s, width-1);
|
|
add_left_prediction_bgr32(p->data[0] + last_line+4, s->temp[0], width-1, &leftr, &leftg, &leftb);
|
|
|
|
for(y=s->height-2; y>=0; y--){ //yes its stored upside down
|
|
decode_bgr_bitstream(s, width);
|
|
|
|
add_left_prediction_bgr32(p->data[0] + p->linesize[0]*y, s->temp[0], width, &leftr, &leftg, &leftb);
|
|
if(s->predictor == PLANE){
|
|
if((y&s->interlaced)==0){
|
|
s->dsp.add_bytes(p->data[0] + p->linesize[0]*y,
|
|
p->data[0] + p->linesize[0]*y + fake_ystride, fake_ystride);
|
|
}
|
|
}
|
|
}
|
|
draw_slice(s, height); // just 1 large slice as this isnt possible in reverse order
|
|
break;
|
|
default:
|
|
fprintf(stderr, "prediction type not supported!\n");
|
|
}
|
|
}else{
|
|
|
|
fprintf(stderr, "BGR24 output isnt implemenetd yet\n");
|
|
return -1;
|
|
}
|
|
}
|
|
emms_c();
|
|
|
|
*picture= *p;
|
|
|
|
avctx->release_buffer(avctx, p);
|
|
|
|
*data_size = sizeof(AVFrame);
|
|
|
|
return (get_bits_count(&s->gb)+7)>>3;
|
|
}
|
|
|
|
static int decode_end(AVCodecContext *avctx)
|
|
{
|
|
HYuvContext *s = avctx->priv_data;
|
|
int i;
|
|
|
|
for(i=0; i<3; i++){
|
|
free_vlc(&s->vlc[i]);
|
|
}
|
|
|
|
if(avctx->get_buffer == avcodec_default_get_buffer){
|
|
for(i=0; i<4; i++){
|
|
av_freep(&s->picture.base[i]);
|
|
s->picture.data[i]= NULL;
|
|
}
|
|
av_freep(&s->picture.opaque);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){
|
|
HYuvContext *s = avctx->priv_data;
|
|
AVFrame *pict = data;
|
|
const int width= s->width;
|
|
const int width2= s->width>>1;
|
|
const int height= s->height;
|
|
const int fake_ystride= s->interlaced ? pict->linesize[0]*2 : pict->linesize[0];
|
|
const int fake_ustride= s->interlaced ? pict->linesize[1]*2 : pict->linesize[1];
|
|
const int fake_vstride= s->interlaced ? pict->linesize[2]*2 : pict->linesize[2];
|
|
AVFrame * const p= &s->picture;
|
|
int i, size;
|
|
|
|
init_put_bits(&s->pb, buf, buf_size, NULL, NULL);
|
|
|
|
*p = *pict;
|
|
|
|
if(avctx->pix_fmt == PIX_FMT_YUV422P || avctx->pix_fmt == PIX_FMT_YUV420P){
|
|
int lefty, leftu, leftv, y, cy;
|
|
|
|
put_bits(&s->pb, 8, leftv= p->data[2][0]);
|
|
put_bits(&s->pb, 8, lefty= p->data[0][1]);
|
|
put_bits(&s->pb, 8, leftu= p->data[1][0]);
|
|
put_bits(&s->pb, 8, p->data[0][0]);
|
|
|
|
lefty= sub_left_prediction(s, s->temp[0], p->data[0]+2, width-2 , lefty);
|
|
leftu= sub_left_prediction(s, s->temp[1], p->data[1]+1, width2-1, leftu);
|
|
leftv= sub_left_prediction(s, s->temp[2], p->data[2]+1, width2-1, leftv);
|
|
|
|
encode_422_bitstream(s, width-2);
|
|
|
|
if(s->predictor==MEDIAN){
|
|
int lefttopy, lefttopu, lefttopv;
|
|
cy=y=1;
|
|
if(s->interlaced){
|
|
lefty= sub_left_prediction(s, s->temp[0], p->data[0]+p->linesize[0], width , lefty);
|
|
leftu= sub_left_prediction(s, s->temp[1], p->data[1]+p->linesize[1], width2, leftu);
|
|
leftv= sub_left_prediction(s, s->temp[2], p->data[2]+p->linesize[2], width2, leftv);
|
|
|
|
encode_422_bitstream(s, width);
|
|
y++; cy++;
|
|
}
|
|
|
|
lefty= sub_left_prediction(s, s->temp[0], p->data[0]+fake_ystride, 4, lefty);
|
|
leftu= sub_left_prediction(s, s->temp[1], p->data[1]+fake_ystride, 2, leftu);
|
|
leftv= sub_left_prediction(s, s->temp[2], p->data[2]+fake_ystride, 2, leftv);
|
|
|
|
encode_422_bitstream(s, 4);
|
|
|
|
lefttopy= p->data[0][3];
|
|
lefttopu= p->data[1][1];
|
|
lefttopv= p->data[2][1];
|
|
sub_median_prediction(s->temp[0], p->data[0]+4, p->data[0] + fake_ystride+4, width-4 , &lefty, &lefttopy);
|
|
sub_median_prediction(s->temp[1], p->data[1]+2, p->data[1] + fake_ustride+2, width2-2, &leftu, &lefttopu);
|
|
sub_median_prediction(s->temp[2], p->data[2]+2, p->data[2] + fake_vstride+2, width2-2, &leftv, &lefttopv);
|
|
encode_422_bitstream(s, width-4);
|
|
y++; cy++;
|
|
|
|
for(; y<height; y++,cy++){
|
|
uint8_t *ydst, *udst, *vdst;
|
|
|
|
if(s->bitstream_bpp==12){
|
|
while(2*cy > y){
|
|
ydst= p->data[0] + p->linesize[0]*y;
|
|
sub_median_prediction(s->temp[0], ydst - fake_ystride, ydst, width , &lefty, &lefttopy);
|
|
encode_gray_bitstream(s, width);
|
|
y++;
|
|
}
|
|
if(y>=height) break;
|
|
}
|
|
ydst= p->data[0] + p->linesize[0]*y;
|
|
udst= p->data[1] + p->linesize[1]*cy;
|
|
vdst= p->data[2] + p->linesize[2]*cy;
|
|
|
|
sub_median_prediction(s->temp[0], ydst - fake_ystride, ydst, width , &lefty, &lefttopy);
|
|
sub_median_prediction(s->temp[1], udst - fake_ustride, udst, width2, &leftu, &lefttopu);
|
|
sub_median_prediction(s->temp[2], vdst - fake_vstride, vdst, width2, &leftv, &lefttopv);
|
|
|
|
encode_422_bitstream(s, width);
|
|
}
|
|
}else{
|
|
for(cy=y=1; y<height; y++,cy++){
|
|
uint8_t *ydst, *udst, *vdst;
|
|
|
|
/* encode a luma only line & y++ */
|
|
if(s->bitstream_bpp==12){
|
|
ydst= p->data[0] + p->linesize[0]*y;
|
|
|
|
if(s->predictor == PLANE && s->interlaced < y){
|
|
s->dsp.diff_bytes(s->temp[1], ydst, ydst - fake_ystride, width);
|
|
|
|
lefty= sub_left_prediction(s, s->temp[0], s->temp[1], width , lefty);
|
|
}else{
|
|
lefty= sub_left_prediction(s, s->temp[0], ydst, width , lefty);
|
|
}
|
|
encode_gray_bitstream(s, width);
|
|
y++;
|
|
if(y>=height) break;
|
|
}
|
|
|
|
ydst= p->data[0] + p->linesize[0]*y;
|
|
udst= p->data[1] + p->linesize[1]*cy;
|
|
vdst= p->data[2] + p->linesize[2]*cy;
|
|
|
|
if(s->predictor == PLANE && s->interlaced < cy){
|
|
s->dsp.diff_bytes(s->temp[1], ydst, ydst - fake_ystride, width);
|
|
s->dsp.diff_bytes(s->temp[2], udst, udst - fake_ustride, width2);
|
|
s->dsp.diff_bytes(s->temp[3], vdst, vdst - fake_vstride, width2);
|
|
|
|
lefty= sub_left_prediction(s, s->temp[0], s->temp[1], width , lefty);
|
|
leftu= sub_left_prediction(s, s->temp[1], s->temp[2], width2, leftu);
|
|
leftv= sub_left_prediction(s, s->temp[2], s->temp[3], width2, leftv);
|
|
}else{
|
|
lefty= sub_left_prediction(s, s->temp[0], ydst, width , lefty);
|
|
leftu= sub_left_prediction(s, s->temp[1], udst, width2, leftu);
|
|
leftv= sub_left_prediction(s, s->temp[2], vdst, width2, leftv);
|
|
}
|
|
|
|
encode_422_bitstream(s, width);
|
|
}
|
|
}
|
|
}else{
|
|
fprintf(stderr, "Format not supported!\n");
|
|
}
|
|
emms_c();
|
|
|
|
size= (get_bit_count(&s->pb)+31)/32;
|
|
|
|
if((s->flags&CODEC_FLAG_PASS1) && (s->picture_number&31)==0){
|
|
int j;
|
|
char *p= avctx->stats_out;
|
|
for(i=0; i<3; i++){
|
|
for(j=0; j<256; j++){
|
|
sprintf(p, "%Ld ", s->stats[i][j]);
|
|
p+= strlen(p);
|
|
s->stats[i][j]= 0;
|
|
}
|
|
sprintf(p, "\n");
|
|
p++;
|
|
}
|
|
}else{
|
|
flush_put_bits(&s->pb);
|
|
bswap_buf((uint32_t*)buf, (uint32_t*)buf, size);
|
|
}
|
|
|
|
s->picture_number++;
|
|
|
|
return size*4;
|
|
}
|
|
|
|
static int encode_end(AVCodecContext *avctx)
|
|
{
|
|
// HYuvContext *s = avctx->priv_data;
|
|
|
|
av_freep(&avctx->extradata);
|
|
av_freep(&avctx->stats_out);
|
|
|
|
return 0;
|
|
}
|
|
|
|
AVCodec huffyuv_decoder = {
|
|
"huffyuv",
|
|
CODEC_TYPE_VIDEO,
|
|
CODEC_ID_HUFFYUV,
|
|
sizeof(HYuvContext),
|
|
decode_init,
|
|
NULL,
|
|
decode_end,
|
|
decode_frame,
|
|
CODEC_CAP_DR1 | CODEC_CAP_DRAW_HORIZ_BAND,
|
|
NULL
|
|
};
|
|
|
|
AVCodec huffyuv_encoder = {
|
|
"huffyuv",
|
|
CODEC_TYPE_VIDEO,
|
|
CODEC_ID_HUFFYUV,
|
|
sizeof(HYuvContext),
|
|
encode_init,
|
|
encode_frame,
|
|
encode_end,
|
|
};
|