1 /* 2 * QEMU EDID test tool. 3 * 4 * This work is licensed under the terms of the GNU GPL, version 2 or later. 5 * See the COPYING file in the top-level directory. 6 */ 7 #include "qemu/osdep.h" 8 #include "qemu/bswap.h" 9 #include "qemu/cutils.h" 10 #include "hw/display/edid.h" 11 12 static qemu_edid_info info = { 13 .prefx = 1280, 14 .prefy = 800, 15 }; 16 17 static void usage(FILE *out) 18 { 19 fprintf(out, 20 "\n" 21 "This is a test tool for the qemu edid generator.\n" 22 "\n" 23 "Typically you'll pipe the output into edid-decode\n" 24 "to check if the generator works correctly.\n" 25 "\n" 26 "usage: qemu-edid <options>\n" 27 "options:\n" 28 " -h print this text\n" 29 " -o <file> set output file (stdout by default)\n" 30 " -v <vendor> set monitor vendor (three letters)\n" 31 " -n <name> set monitor name\n" 32 " -s <serial> set monitor serial\n" 33 " -d <dpi> set display resolution\n" 34 " -x <prefx> set preferred width\n" 35 " -y <prefy> set preferred height\n" 36 " -X <maxx> set maximum width\n" 37 " -Y <maxy> set maximum height\n" 38 "\n"); 39 } 40 41 int main(int argc, char *argv[]) 42 { 43 FILE *outfile = NULL; 44 uint8_t blob[512]; 45 size_t size; 46 uint32_t dpi = 100; 47 int rc; 48 49 for (;;) { 50 rc = getopt(argc, argv, "ho:x:y:X:Y:d:v:n:s:"); 51 if (rc == -1) { 52 break; 53 } 54 switch (rc) { 55 case 'o': 56 if (outfile) { 57 fprintf(stderr, "outfile specified twice\n"); 58 exit(1); 59 } 60 outfile = fopen(optarg, "w"); 61 if (outfile == NULL) { 62 fprintf(stderr, "open %s: %s\n", optarg, strerror(errno)); 63 exit(1); 64 } 65 break; 66 case 'x': 67 if (qemu_strtoui(optarg, NULL, 10, &info.prefx) < 0) { 68 fprintf(stderr, "not a number: %s\n", optarg); 69 exit(1); 70 } 71 break; 72 case 'y': 73 if (qemu_strtoui(optarg, NULL, 10, &info.prefy) < 0) { 74 fprintf(stderr, "not a number: %s\n", optarg); 75 exit(1); 76 } 77 break; 78 case 'X': 79 if (qemu_strtoui(optarg, NULL, 10, &info.maxx) < 0) { 80 fprintf(stderr, "not a number: %s\n", optarg); 81 exit(1); 82 } 83 break; 84 case 'Y': 85 if (qemu_strtoui(optarg, NULL, 10, &info.maxy) < 0) { 86 fprintf(stderr, "not a number: %s\n", optarg); 87 exit(1); 88 } 89 break; 90 case 'd': 91 if (qemu_strtoui(optarg, NULL, 10, &dpi) < 0) { 92 fprintf(stderr, "not a number: %s\n", optarg); 93 exit(1); 94 } 95 break; 96 case 'v': 97 info.vendor = optarg; 98 break; 99 case 'n': 100 info.name = optarg; 101 break; 102 case 's': 103 info.serial = optarg; 104 break; 105 case 'h': 106 usage(stdout); 107 exit(0); 108 default: 109 usage(stderr); 110 exit(1); 111 } 112 } 113 114 if (outfile == NULL) { 115 outfile = stdout; 116 } 117 118 info.width_mm = qemu_edid_dpi_to_mm(dpi, info.prefx); 119 info.height_mm = qemu_edid_dpi_to_mm(dpi, info.prefy); 120 121 memset(blob, 0, sizeof(blob)); 122 qemu_edid_generate(blob, sizeof(blob), &info); 123 size = qemu_edid_size(blob); 124 fwrite(blob, size, 1, outfile); 125 fflush(outfile); 126 127 exit(0); 128 } 129