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 = 1024, 14 .prefy = 768, 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[256]; 45 uint32_t dpi = 100; 46 int rc; 47 48 for (;;) { 49 rc = getopt(argc, argv, "ho:x:y:X:Y:d:v:n:s:"); 50 if (rc == -1) { 51 break; 52 } 53 switch (rc) { 54 case 'o': 55 if (outfile) { 56 fprintf(stderr, "outfile specified twice\n"); 57 exit(1); 58 } 59 outfile = fopen(optarg, "w"); 60 if (outfile == NULL) { 61 fprintf(stderr, "open %s: %s\n", optarg, strerror(errno)); 62 exit(1); 63 } 64 break; 65 case 'x': 66 if (qemu_strtoui(optarg, NULL, 10, &info.prefx) < 0) { 67 fprintf(stderr, "not a number: %s\n", optarg); 68 exit(1); 69 } 70 break; 71 case 'y': 72 if (qemu_strtoui(optarg, NULL, 10, &info.prefy) < 0) { 73 fprintf(stderr, "not a number: %s\n", optarg); 74 exit(1); 75 } 76 break; 77 case 'X': 78 if (qemu_strtoui(optarg, NULL, 10, &info.maxx) < 0) { 79 fprintf(stderr, "not a number: %s\n", optarg); 80 exit(1); 81 } 82 break; 83 case 'Y': 84 if (qemu_strtoui(optarg, NULL, 10, &info.maxy) < 0) { 85 fprintf(stderr, "not a number: %s\n", optarg); 86 exit(1); 87 } 88 break; 89 case 'd': 90 if (qemu_strtoui(optarg, NULL, 10, &dpi) < 0) { 91 fprintf(stderr, "not a number: %s\n", optarg); 92 exit(1); 93 } 94 break; 95 case 'v': 96 info.vendor = optarg; 97 break; 98 case 'n': 99 info.name = optarg; 100 break; 101 case 's': 102 info.serial = optarg; 103 break; 104 case 'h': 105 usage(stdout); 106 exit(0); 107 default: 108 usage(stderr); 109 exit(1); 110 } 111 } 112 113 if (outfile == NULL) { 114 outfile = stdout; 115 } 116 117 info.width_mm = qemu_edid_dpi_to_mm(dpi, info.prefx); 118 info.height_mm = qemu_edid_dpi_to_mm(dpi, info.prefy); 119 120 memset(blob, 0, sizeof(blob)); 121 qemu_edid_generate(blob, sizeof(blob), &info); 122 fwrite(blob, sizeof(blob), 1, outfile); 123 fflush(outfile); 124 125 exit(0); 126 } 127