| 1 | /* |
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| 2 | A small tools to convert/debug CHDK live view dumps. |
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| 3 | |
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| 4 | REVISIONS: |
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| 5 | 1. Initial release. Author: reyalP (04-Jul-2010) |
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| 6 | |
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| 7 | code borrowed from motion_detector.c, rawconvert.c and ewavrs ptpcam |
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| 8 | */ |
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| 9 | #include <stdio.h> |
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| 10 | #include <stdint.h> |
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| 11 | #include <stdlib.h> |
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| 12 | #include <string.h> |
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| 13 | #include <sys/stat.h> |
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| 14 | #include <assert.h> |
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| 15 | |
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| 16 | |
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| 17 | void usage() |
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| 18 | { |
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| 19 | fprintf(stderr,"Usage: -w=<width> -h=<height> [-split] [-rgb] [-skipy] <infile> <outbasename>\n"); |
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| 20 | fprintf(stderr,"infile: dump of live viewport data, assumed UYVYYY with 8 bit elements.\n" |
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| 21 | "outbasename: base name to use for various output files\n" |
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| 22 | "-w=,-h=\n" |
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| 23 | " real width and height of input. Width is by counting Y values.\n" |
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| 24 | "-rgb:\n" |
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| 25 | " Output packed 24 bit RGB outbasename-<output width>.RGB\n" |
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| 26 | "-skipy:\n" |
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| 27 | " skip 50%% of Y values in each row when making RGB\n" |
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| 28 | " to give correct aspect ratio on older cameras\n" |
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| 29 | "-split:\n" |
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| 30 | " produces outbasename.Y outbasename.U and outbasename.V as 8 bit greyscale\n" |
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| 31 | " .Y will be full resolution, .U and .V will be 1/4 width of Y\n"); |
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| 32 | exit(1); |
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| 33 | } |
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| 34 | |
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| 35 | static uint8_t clip(int v) { |
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| 36 | if (v<0) return 0; |
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| 37 | if (v>255) return 255; |
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| 38 | return v; |
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| 39 | } |
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| 40 | |
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| 41 | void yuv_to_rgb(uint8_t **dest, uint8_t y, int8_t u, int8_t v) |
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| 42 | { |
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| 43 | *((*dest)++) = clip(((y<<12) + v*5743 + 2048)>>12); |
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| 44 | *((*dest)++) = clip(((y<<12) - u*1411 - v*2925 + 2048)>>12); |
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| 45 | *((*dest)++) = clip(((y<<12) + u*7258 + 2048)>>12); |
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| 46 | } |
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| 47 | |
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| 48 | int main(int argc, char**argv) |
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| 49 | { |
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| 50 | int8_t *in_data; |
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| 51 | uint8_t *out_data; |
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| 52 | uint8_t *prgb_data; |
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| 53 | int8_t *y_data,*py_data; |
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| 54 | int8_t *u_data,*pu_data; |
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| 55 | int8_t *v_data,*pv_data; |
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| 56 | FILE *fp; |
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| 57 | char *iname=NULL; |
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| 58 | char *oname=NULL; |
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| 59 | |
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| 60 | unsigned height=0; |
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| 61 | unsigned width=0; |
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| 62 | unsigned npixels; |
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| 63 | unsigned isize; |
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| 64 | unsigned osize; |
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| 65 | |
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| 66 | unsigned split_yuv=0; |
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| 67 | unsigned skipy=0; |
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| 68 | unsigned rgb=0; |
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| 69 | |
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| 70 | struct stat st; |
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| 71 | |
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| 72 | size_t rcount; |
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| 73 | |
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| 74 | unsigned i; |
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| 75 | |
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| 76 | for(i = 1; i < argc; i++) { |
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| 77 | if ( strncmp(argv[i],"-h=",3) == 0 ) { |
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| 78 | height=atoi(argv[i]+3); |
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| 79 | } |
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| 80 | else if ( strncmp(argv[i],"-w=",3) == 0 ) { |
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| 81 | width=atoi(argv[i]+3); |
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| 82 | } |
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| 83 | else if( strcmp(argv[i],"-split") == 0 ) { |
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| 84 | split_yuv=1; |
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| 85 | } |
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| 86 | else if( strcmp(argv[i],"-skipy") == 0 ) { |
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| 87 | skipy=1; |
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| 88 | } |
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| 89 | else if( strcmp(argv[i],"-rgb") == 0 ) { |
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| 90 | rgb=1; |
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| 91 | } |
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| 92 | else { |
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| 93 | if(!iname) { |
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| 94 | iname=argv[i]; |
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| 95 | } |
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| 96 | else if (!oname) { |
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| 97 | oname=argv[i]; |
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| 98 | } |
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| 99 | else { |
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| 100 | fprintf(stderr,"%s: unknown option %s\n",argv[0],argv[i]); |
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| 101 | usage(); |
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| 102 | } |
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| 103 | } |
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| 104 | } |
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| 105 | if(!iname) { |
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| 106 | fprintf(stderr,"%s: missing input file\n",argv[0]); |
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| 107 | usage(); |
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| 108 | } |
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| 109 | if(!oname) { |
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| 110 | fprintf(stderr,"%s: missing output file\n",argv[0]); |
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| 111 | usage(); |
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| 112 | } |
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| 113 | if(!height || !width) { |
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| 114 | fprintf(stderr,"%s: invalid dimensions\n",argv[0]); |
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| 115 | usage(); |
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| 116 | } |
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| 117 | |
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| 118 | if(stat(iname,&st) != 0) { |
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| 119 | fprintf(stderr,"%s: bad input file %s\n",argv[0],iname); |
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| 120 | exit(1); |
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| 121 | } |
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| 122 | |
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| 123 | if((width*12)%8 != 0) { |
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| 124 | fprintf(stderr,"WARNING: width %u not an integral number of bytes at 12 bpp\n",width); |
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| 125 | } |
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| 126 | |
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| 127 | |
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| 128 | npixels=height*width; |
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| 129 | isize = (npixels*12)/8; |
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| 130 | if(isize > st.st_size) { |
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| 131 | fprintf(stderr,"%s: ERROR: dimensions too large for input file (%u*%u*12)/8=%u > %lu\n", |
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| 132 | argv[0],width,height,isize,st.st_size); |
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| 133 | exit(1); |
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| 134 | } else if ( isize < st.st_size) { |
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| 135 | fprintf(stderr,"%s: WARNING: dimensions smaller than input file (%u*%u*12)/8=%u < %lu\n", |
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| 136 | argv[0],width,height,isize,st.st_size); |
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| 137 | } |
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| 138 | |
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| 139 | if(!rgb && !split_yuv) { |
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| 140 | fprintf(stderr,"nothing to do!\n"); |
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| 141 | usage(); |
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| 142 | return 0; |
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| 143 | } |
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| 144 | |
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| 145 | in_data=malloc(isize); |
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| 146 | assert(in_data); |
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| 147 | |
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| 148 | fp=fopen(iname,"rb"); |
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| 149 | assert(fp); |
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| 150 | |
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| 151 | rcount=fread(in_data,1,isize,fp); |
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| 152 | assert(rcount==isize); |
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| 153 | |
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| 154 | fclose(fp); |
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| 155 | |
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| 156 | fprintf(stderr,"input: %s %ux%u UYVYYY %u bytes\n",iname, width, height, isize); |
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| 157 | |
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| 158 | if(split_yuv) { |
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| 159 | fprintf(stderr,"output: %s.Y %ux%u %s.U,V %ux%u\n", oname, width, height,oname,width/4,height); |
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| 160 | char splitname[256]; |
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| 161 | py_data = y_data=malloc(npixels); |
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| 162 | assert(y_data); |
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| 163 | pu_data = u_data=malloc(npixels/4); |
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| 164 | assert(u_data); |
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| 165 | pv_data = v_data=malloc(npixels/4); |
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| 166 | assert(v_data); |
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| 167 | for (i=0;i<isize; i+=6) { |
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| 168 | *py_data++ = in_data[i+1]; |
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| 169 | *py_data++ = in_data[i+3]; |
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| 170 | *py_data++ = in_data[i+4]; |
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| 171 | *py_data++ = in_data[i+5]; |
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| 172 | *pu_data++ = in_data[i]; |
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| 173 | *pv_data++ = in_data[i+2]; |
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| 174 | |
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| 175 | } |
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| 176 | sprintf(splitname,"%s.Y",oname); |
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| 177 | fp=fopen(splitname,"wb"); |
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| 178 | assert(fp); |
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| 179 | fwrite(y_data, 1, npixels, fp); |
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| 180 | fclose(fp); |
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| 181 | free(y_data); |
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| 182 | |
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| 183 | sprintf(splitname,"%s.U",oname); |
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| 184 | fp=fopen(splitname,"wb"); |
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| 185 | assert(fp); |
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| 186 | fwrite(u_data, 1, npixels/4, fp); |
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| 187 | fclose(fp); |
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| 188 | free(u_data); |
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| 189 | |
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| 190 | sprintf(splitname,"%s.V",oname); |
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| 191 | fp=fopen(splitname,"wb"); |
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| 192 | assert(fp); |
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| 193 | fwrite(v_data, 1, npixels/4, fp); |
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| 194 | fclose(fp); |
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| 195 | free(v_data); |
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| 196 | } |
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| 197 | if (rgb) { |
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| 198 | unsigned owidth; |
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| 199 | uint8_t *p_yuv; |
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| 200 | char rgbname[256]; |
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| 201 | |
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| 202 | if(skipy) { |
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| 203 | owidth = width/2; |
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| 204 | } else { |
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| 205 | owidth = width; |
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| 206 | } |
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| 207 | osize = (owidth*height)*3; |
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| 208 | out_data=malloc(osize); |
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| 209 | assert(out_data); |
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| 210 | |
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| 211 | prgb_data = out_data; |
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| 212 | p_yuv = in_data; |
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| 213 | |
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| 214 | sprintf(rgbname,"%s-%d.RGB",oname,owidth); |
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| 215 | |
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| 216 | fprintf(stderr,"output: %s %ux%u RGB8 %u bytes\n", rgbname, owidth, height, osize); |
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| 217 | |
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| 218 | for (i=0;i<npixels; i+=4, p_yuv+=6) { |
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| 219 | yuv_to_rgb(&prgb_data,p_yuv[1],p_yuv[0],p_yuv[2]); |
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| 220 | yuv_to_rgb(&prgb_data,p_yuv[3],p_yuv[0],p_yuv[2]); |
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| 221 | if(skipy) |
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| 222 | continue; |
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| 223 | yuv_to_rgb(&prgb_data,p_yuv[4],p_yuv[0],p_yuv[2]); |
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| 224 | yuv_to_rgb(&prgb_data,p_yuv[5],p_yuv[0],p_yuv[2]); |
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| 225 | } |
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| 226 | |
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| 227 | fp=fopen(rgbname,"wb"); |
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| 228 | assert(fp); |
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| 229 | fwrite(out_data, 1, osize, fp); |
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| 230 | fclose(fp); |
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| 231 | |
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| 232 | free(in_data); |
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| 233 | free(out_data); |
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| 234 | fprintf(stderr,"done\n"); |
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| 235 | } |
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| 236 | return 0; |
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| 237 | } |
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| 238 | |
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