Mercurial > hg > minimon
annotate minimon.c @ 2:bac8ed8d6eb9
add jpeg coding and test stuff
| author | Peter Meerwald <pmeerw@pmeerw.net> |
|---|---|
| date | Sun, 08 May 2011 18:22:22 +0200 |
| parents | 111d4bbce605 |
| children | 078dc69945ad |
| rev | line source |
|---|---|
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1 #include <stdlib.h> |
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2 #include <stdio.h> |
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3 #include <string.h> |
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4 #include <fcntl.h> |
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5 #include <assert.h> |
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6 #include "usb.h" |
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7 |
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8 static const char *progname = "minimon"; |
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9 |
| 1 | 10 static int need_switch = 0; |
| 11 static int have_idx = -1; | |
| 12 | |
| 13 typedef struct { | |
| 14 int mass_id; | |
| 15 int custom_id; | |
| 16 const char *name; | |
| 17 int width; | |
| 18 int height; | |
| 19 } id_info_t; | |
| 20 | |
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21 // there are many more, |
| 1 | 22 static id_info_t ids[] = { |
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23 {0x2027, 0x2028, "SPF-107H", 1024, 600}, |
| 1 | 24 {0xffff, 0xffff, "SPF-75H", 800, 480}, |
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25 {0xffff, 0xffff, "SPF-83H", 800, 600}, |
| 1 | 26 {0xffff, 0xffff, "SPF-85H", 800, 600}, // 85P?? |
| 27 {0x2033, 0x2034, "SPF-87H", 800, 480}, | |
| 28 {0x2035, 0x2036, "SPF-107H", 1024, 600}, | |
| 29 {0, 0, } // end-of-list | |
| 30 }; | |
| 31 | |
| 32 static int in_list(int id, id_info_t *list) { | |
| 33 if (!list) | |
| 34 return 0; | |
| 35 | |
| 36 int idx = 0; | |
| 37 while (list->mass_id || list->custom_id) { | |
| 38 if (id == list->mass_id) { | |
| 39 // still in mass-storage mode, need to switch | |
| 40 need_switch = 1; | |
| 41 return idx; | |
| 42 } | |
| 43 else if (id == list->custom_id) { | |
| 44 need_switch = 0; | |
| 45 return idx; | |
| 46 } | |
| 47 idx++; | |
| 48 list++; | |
| 49 } | |
| 50 | |
| 51 return -1; | |
| 52 } | |
| 53 | |
| 54 static struct usb_device *find_dev() { | |
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55 struct usb_bus *bus; |
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56 struct usb_device *dev; |
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57 |
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58 usb_init(); |
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59 usb_find_busses(); |
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60 usb_find_devices(); |
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61 |
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62 for (bus = usb_busses; bus; bus = bus->next) { |
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63 for (dev = bus->devices; dev; dev = dev->next) { |
| 1 | 64 if (dev->descriptor.idVendor == 0x04e8) { |
| 65 // found a Samsung device, good | |
| 66 int idx = -1; | |
| 67 if ((idx = in_list(dev->descriptor.idProduct, ids)) >= 0) { | |
| 68 have_idx = idx; | |
| 69 return dev; | |
| 70 } | |
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71 } |
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72 } |
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73 } |
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74 |
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75 return NULL; |
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76 } |
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77 |
| 1 | 78 static usb_dev_handle *dev_open(struct usb_device *dev) { |
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79 int res = -1; |
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80 usb_dev_handle *udev; |
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81 int numeps = 0; |
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82 |
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83 udev = usb_open(dev); |
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84 if (!udev) { |
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85 fprintf(stderr, "%s: failed to open device, exit.\n", progname); |
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86 exit(EXIT_FAILURE); |
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87 } |
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88 |
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89 // setuid(getuid()); |
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90 |
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91 res = usb_set_configuration(udev, 1); |
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92 |
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93 usb_claim_interface(udev, 0); |
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94 numeps = dev->config[0].interface[0].altsetting[0].bNumEndpoints; |
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95 if (numeps == 0) { |
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96 fprintf(stderr, "%s: no endpoints, exit.\n", progname); |
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97 exit(EXIT_FAILURE); |
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98 } |
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99 |
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100 { |
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101 int eplist[] = { 0x2, 0x81, 0x83 }; |
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102 int eplength = sizeof(eplist)/sizeof(eplist[0]); |
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103 int *endpoint = eplist; |
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104 int i; |
| 1 | 105 for (i = 0; i < eplength; i++) { |
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106 res = usb_resetep(udev, *endpoint); |
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107 res = usb_clear_halt(udev, *endpoint); |
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108 endpoint++; |
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109 } |
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110 } |
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111 |
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112 return udev; |
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113 } |
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114 |
| 1 | 115 static void send_jpeg(FILE *f, usb_dev_handle *udev) { |
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116 fseek(f, 0, SEEK_END); |
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117 int sz = ftell(f); |
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118 fseek(f, 0, SEEK_SET); |
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119 |
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120 #define URBBUF_MAX 0x20000 |
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121 char buf[URBBUF_MAX]; |
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122 |
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123 #define HDR_LEN 12 |
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124 char hdr[HDR_LEN] = {0xa5, 0x5a, 0x18, 0x04, 0xff, 0xff, 0xff, 0xff, 0x48, 0x00, 0x00, 0x00}; |
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125 *(int *)(hdr+4) = sz; |
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126 |
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127 memcpy(buf, hdr, HDR_LEN); |
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128 int off = HDR_LEN; |
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129 |
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130 while(!feof(f)) { |
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131 int nr = fread(buf+off, 1, URBBUF_MAX - off, f); |
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132 if (nr < 0) break; |
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133 // pad |
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134 memset(buf + off + nr, 0, URBBUF_MAX - off - nr); |
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135 |
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136 // write it out chunk by chunk |
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137 int timeout = 1000; |
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138 int endpoint = 0x2; |
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139 int res = usb_bulk_write(udev, endpoint, buf, URBBUF_MAX, timeout); |
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140 |
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141 assert(res >= 0); |
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142 off = 0; // no header on subsequent chunks |
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143 } |
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144 } |
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145 |
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146 int main(int argc, char *argv[]) { |
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147 if (argc != 2) { |
| 1 | 148 fprintf(stderr, "Usage: %s <.jpg file>\n", progname); |
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149 return EXIT_FAILURE; |
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150 } |
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151 |
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152 struct usb_device *dev = find_dev(index); |
| 1 | 153 if (!dev) { |
| 154 fprintf(stderr, "%s: no photo frame device found, exit.\n", progname); | |
| 155 exit(EXIT_FAILURE); | |
| 156 } | |
| 157 | |
| 158 if (need_switch) { | |
| 159 fprintf(stderr, "%s: found %s, trying to switch to custom product mode...\n", | |
| 160 ids[have_idx].name, progname); | |
| 161 | |
| 162 usb_dev_handle *udev; | |
| 163 | |
| 164 udev = usb_open(dev); | |
| 165 if (!udev) { | |
| 166 fprintf(stderr, "%s: failed to open device, exit.\n", progname); | |
| 167 exit(EXIT_FAILURE); | |
| 168 } | |
| 169 | |
| 170 char buf[254]; | |
| 171 memset(buf, 0, 254); | |
| 172 | |
| 173 int res = usb_control_msg(udev, USB_TYPE_STANDARD | USB_ENDPOINT_IN, USB_REQ_GET_DESCRIPTOR, | |
| 174 0xfe, 0xfe, buf, 0xfe, 1000); | |
| 175 fprintf(stderr, "%s: usb_control_msg() = %d\n", progname, res); | |
| 176 | |
| 177 usb_close(udev); | |
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178 usleep(500000); |
| 1 | 179 } |
| 180 | |
| 181 dev = find_dev(index); | |
| 182 if (!dev || need_switch) { | |
| 183 fprintf(stderr, "%s: no photo frame device found, exit.\n", progname); | |
| 184 exit(EXIT_FAILURE); | |
| 185 } | |
| 186 | |
| 187 fprintf(stderr, "%s: found %s (%d x %d)\n", | |
| 188 progname, ids[have_idx].name, ids[have_idx].width, ids[have_idx].height); | |
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189 |
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190 usb_dev_handle *udev = dev_open(dev); |
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191 |
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192 FILE *f = fopen(argv[1], "rb"); |
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193 if (f == NULL) { |
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194 fprintf(stderr, "%s: failed to open file '%s', exit.\n", progname, argv[1]); |
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195 exit(EXIT_FAILURE); |
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196 } |
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197 send_jpeg(f, udev); |
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198 fclose(f); |
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199 |
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200 while (1) { |
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201 char buf[2]; |
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202 int res = usb_control_msg(udev, USB_TYPE_VENDOR | USB_ENDPOINT_IN, USB_REQ_GET_DESCRIPTOR, |
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203 0x0, 0x0, buf, 0x2, 1000); |
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204 fprintf(stderr, "%s: usb_control_msg() = %d\n", progname, res); |
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205 |
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206 usleep(500000); |
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207 } |
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208 |
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209 usb_close(udev); |
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210 |
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211 return EXIT_SUCCESS; |
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212 } |
