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annotate disp-minimon.c @ 11:8fadd7877f6b default tip

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build only minimon per default
author Peter Meerwald <pmeerw@pmeerw.net>
date Sun, 15 May 2011 18:58:44 +0200
parents 078dc69945ad
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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10
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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
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10 static int need_switch = 0;
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11 static int have_idx = -1;
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12
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13 typedef struct {
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14 int mass_id;
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15 int custom_id;
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16 const char *name;
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17 int width;
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18 int height;
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19 } id_info_t;
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20
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21 // there are many more,
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22 static id_info_t ids[] = {
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23 {0x2027, 0x2028, "SPF-107H", 1024, 600},
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24 {0xffff, 0xffff, "SPF-75H", 800, 480},
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25 {0xffff, 0xffff, "SPF-83H", 800, 600},
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26 {0xffff, 0xffff, "SPF-85H", 800, 600}, // 85P??
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27 {0x2033, 0x2034, "SPF-87H", 800, 480},
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28 {0x2035, 0x2036, "SPF-107H", 1024, 600},
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29 {0, 0, } // end-of-list
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30 };
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31
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32 static int in_list(int id, id_info_t *list) {
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33 if (!list)
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34 return 0;
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35
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36 int idx = 0;
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37 while (list->mass_id || list->custom_id) {
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38 if (id == list->mass_id) {
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39 // still in mass-storage mode, need to switch
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40 need_switch = 1;
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41 return idx;
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42 }
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43 else if (id == list->custom_id) {
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44 need_switch = 0;
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45 return idx;
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46 }
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47 idx++;
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48 list++;
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49 }
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50
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51 return -1;
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52 }
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53
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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) {
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64 if (dev->descriptor.idVendor == 0x04e8) {
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65 // found a Samsung device, good
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66 int idx = -1;
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67 if ((idx = in_list(dev->descriptor.idProduct, ids)) >= 0) {
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68 have_idx = idx;
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69 return dev;
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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
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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;
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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
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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) {
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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);
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153 if (!dev) {
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154 fprintf(stderr, "%s: no photo frame device found, exit.\n", progname);
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155 exit(EXIT_FAILURE);
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156 }
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157
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158 if (need_switch) {
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159 fprintf(stderr, "%s: found %s, trying to switch to custom product mode...\n",
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160 ids[have_idx].name, progname);
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161
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162 usb_dev_handle *udev;
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163
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164 udev = usb_open(dev);
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165 if (!udev) {
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166 fprintf(stderr, "%s: failed to open device, exit.\n", progname);
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167 exit(EXIT_FAILURE);
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168 }
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169
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170 char buf[254];
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171 memset(buf, 0, 254);
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172
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173 int res = usb_control_msg(udev, USB_TYPE_STANDARD | USB_ENDPOINT_IN, USB_REQ_GET_DESCRIPTOR,
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174 0xfe, 0xfe, buf, 0xfe, 1000);
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175 fprintf(stderr, "%s: usb_control_msg() = %d\n", progname, res);
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176
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177 usb_close(udev);
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178 usleep(500000);
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179 }
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180
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181 dev = find_dev(index);
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182 if (!dev || need_switch) {
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183 fprintf(stderr, "%s: no photo frame device found, exit.\n", progname);
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184 exit(EXIT_FAILURE);
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185 }
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186
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187 fprintf(stderr, "%s: found %s (%d x %d)\n",
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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 }

Repositories maintained by Peter Meerwald, pmeerw@pmeerw.net.