Mercurial > hg > minimon

annotate playusb.c @ 8:66c77f9ba9b9

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convert rgba -> rgb
author Peter Meerwald <pmeerw@pmeerw.net>
date Sat, 14 May 2011 21:05:59 +0200
parents 71b9540bdd23
children
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0
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1 /**
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2 * based on usbreplay.c
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3 * -- takes a list of jpeg filenames (on stdin) and sends them to the device index X
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4 *
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5 */
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6
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7 #include <usb.h>
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8 #include <stdlib.h>
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9 #include <stdio.h>
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10 #include <string.h>
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11 #include <fcntl.h>
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12 #include <assert.h>
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13
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14 struct usb_device *find_pvr(int index) {
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15 struct usb_bus *bus;
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16 struct usb_device *dev;
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17
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18 usb_init();
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19 //usb_set_debug(999999);
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20 usb_find_busses();
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21 usb_find_devices();
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22
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23 while(index >= 0) {
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24 for (bus = usb_busses; bus; bus = bus->next) {
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25 for (dev = bus->devices; dev; dev = dev->next) {
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26 if (dev->descriptor.idVendor == 0x04e8 &&
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27 dev->descriptor.idProduct == 0x2028) {
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28 if (index == 0)
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29 return dev;
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30 --index;
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31 }
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32 }
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33 }
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34 }
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35 return NULL;
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36 }
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37
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38 usb_dev_handle *dev_open(struct usb_device *dev) {
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39 int res = -1;
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40 char buf[256];
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41 usb_dev_handle *udev;
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42 int numeps = 0;
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43
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44 udev = usb_open(dev);
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45
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46 setuid(getuid());
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47
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48 res = usb_set_configuration(udev, 1);
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49
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50 usb_claim_interface(udev, 0);
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51 numeps = dev->config[0].interface[0].altsetting[0].bNumEndpoints;
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52 if (numeps == 0) {
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53 fprintf(stderr, "** Did you forget to initialize the FX2 firmware with usbreplay -i?\n");
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54 exit(1);
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55 }
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56
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57 strcpy(buf, "** no string **");
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58 res = usb_get_string_simple(udev, dev->descriptor.iManufacturer, buf, sizeof(buf));
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59 fprintf(stderr, "usb_get_string_simple => %d, %s\n", res, buf);
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60
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61 {
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62 int eplist[] = { 0x2, 0x81, 0x83 };
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63 int eplength = sizeof(eplist)/sizeof(eplist[0]);
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64 int *endpoint = eplist;
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65 int i;
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66 for (i=0; i<eplength; i++) {
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67 res = usb_resetep(udev, *endpoint);
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68 res = usb_clear_halt(udev, *endpoint);
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69 endpoint++;
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70 }
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71 }
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72
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73 return udev;
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74 }
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75
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76
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77 void send_jpeg(FILE *f, usb_dev_handle *udev) {
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78 fseek(f, 0, SEEK_END);
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79 int sz = ftell(f);
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80 fseek(f, 0, SEEK_SET);
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81
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82 #define URBBUF_MAX 0x20000
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83 char buf[URBBUF_MAX];
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84
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85 #define HDR_LEN 12
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86 char hdr[HDR_LEN] = {0xa5, 0x5a, 0x18, 0x04, 0xff, 0xff, 0xff, 0xff, 0x48, 0x00, 0x00, 0x00};
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87 *(int *)(hdr+4) = sz;
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88
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89 memcpy(buf, hdr, HDR_LEN);
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90 int off = HDR_LEN;
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91
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92 //printf("new file of size %d\n", sz);
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93 while(!feof(f)) {
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94 int nr = fread(buf+off, 1, URBBUF_MAX - off, f);
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95 if (nr < 0) break;
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96 // pad
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97 memset(buf + off + nr, 0, URBBUF_MAX - off - nr);
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98
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99 // write it out chunk by chunk
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100 int timeout = 1000;
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101 int endpoint = 0x2;
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102 int res = usb_bulk_write(udev, endpoint, buf, URBBUF_MAX, timeout);
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103 //printf("writing chunk\n");
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104 assert(res >= 0);
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105 off = 0; // no header on subsequent chunks
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106 }
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107 }
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108
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109 int main(int argc, char *argv[]) {
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110 int index = 0;
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111 if (argc > 1) {
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112 if (sscanf(argv[1], "%d", &index) != 1) {
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113 fprintf(stderr, "Usage: %s [device index] < filelist", argv[0]);
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114 return -1;
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115 }
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116 }
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117
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118 struct usb_device *dev = find_pvr(index);
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119 assert (dev != NULL);
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120
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121 usb_dev_handle *udev = dev_open(dev);
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122
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123 while(1) {
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124 // for each file in the list
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125 while(!feof(stdin)) {
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126 char fn[256];
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127 fgets(fn, 256, stdin);
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128 int nn = strlen(fn);
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129 if (nn > 0) {
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130 if (fn[nn-1] == '\n')
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131 fn[nn-1] = 0;
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132 FILE *f = fopen(fn, "r");
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133 if (f == NULL) {
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134 fprintf(stderr, "file %s not found\n", fn);
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135 return 2;
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136 }
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137 send_jpeg(f, udev);
71b9540bdd23 starting, importing Woo's code and adding minimon
Peter Meerwald <pmeerw@pmeerw.net>
parents:
diff changeset
138 fclose(f);
71b9540bdd23 starting, importing Woo's code and adding minimon
Peter Meerwald <pmeerw@pmeerw.net>
parents:
diff changeset
139 }
71b9540bdd23 starting, importing Woo's code and adding minimon
Peter Meerwald <pmeerw@pmeerw.net>
parents:
diff changeset
140 }
71b9540bdd23 starting, importing Woo's code and adding minimon
Peter Meerwald <pmeerw@pmeerw.net>
parents:
diff changeset
141 fseek(stdin, 0, SEEK_SET);
71b9540bdd23 starting, importing Woo's code and adding minimon
Peter Meerwald <pmeerw@pmeerw.net>
parents:
diff changeset
142 }
71b9540bdd23 starting, importing Woo's code and adding minimon
Peter Meerwald <pmeerw@pmeerw.net>
parents:
diff changeset
143 return 0;
71b9540bdd23 starting, importing Woo's code and adding minimon
Peter Meerwald <pmeerw@pmeerw.net>
parents:
diff changeset
144 }

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