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Fixed MTP to work with TWRP

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awab228 2018-06-19 23:16:04 +02:00
commit f6dfaef42e
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51
drivers/media/usb/gspca/sn9c2028.h Normal file
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/*
* SN9C2028 common functions
*
* Copyright (C) 2009 Theodore Kilgore <kilgota@auburn,edu>
*
* Based closely upon the file gspca/pac_common.h
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
static const unsigned char sn9c2028_sof_marker[5] =
{ 0xff, 0xff, 0x00, 0xc4, 0xc4 };
static unsigned char *sn9c2028_find_sof(struct gspca_dev *gspca_dev,
unsigned char *m, int len)
{
struct sd *sd = (struct sd *) gspca_dev;
int i;
/* Search for the SOF marker (fixed part) in the header */
for (i = 0; i < len; i++) {
if (m[i] == sn9c2028_sof_marker[sd->sof_read]) {
sd->sof_read++;
if (sd->sof_read == sizeof(sn9c2028_sof_marker)) {
PDEBUG(D_FRAM,
"SOF found, bytes to analyze: %u."
" Frame starts at byte #%u",
len, i + 1);
sd->sof_read = 0;
return m + i + 1;
}
} else {
sd->sof_read = 0;
}
}
return NULL;
}