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/****************************************************************/
/* pccam300.c - Gphoto2 library for the Creative PC-CAM 300 */
/* */
/* Authors: Till Adam <till@adam-lilienthal.de> */
/* Miah Gregory <mace@darksilence.net> */
/* */
/* This library is free software; you can redistribute it */
/* and/or modify it under the terms of the GNU Library General */
/* Public License as published by the Free Software Foundation; */
/* either version 2 of the License, or (at your option) any */
/* later version. */
/* */
/* This library 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 Library General Public License for */
/* more details. */
/* */
/* You should have received a copy of the GNU Library General */
/* Public License along with this library; if not, write to the */
/* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,*/
/* Boston, MA 02110-1301 USA */
/****************************************************************/
#include <config.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <_stdint.h>
#include "pccam300.h"
#include <gphoto2/gphoto2.h>
#include <gphoto2/gphoto2-port.h>
#include <gphoto2/gphoto2-port-log.h>
#define GP_MODULE "pccam300"
#ifdef ENABLE_NLS
# include <libintl.h>
# undef _
# define _(String) dgettext (PACKAGE, String)
# ifdef gettext_noop
# define N_(String) gettext_noop (String)
# else
# define N_(String) (String)
# endif
#else
# define _(String) (String)
# define N_(String) (String)
#endif
/*
* waits until the status value is 0 or 8.
* if status == 0xb0 or 0x40 we will wait some more
*/
static int
pccam300_wait_for_status (GPPort *port)
{
int ret;
int retries = 20;
unsigned char status = 1;
while (status != 0x00 && retries--) {
gp_port_set_timeout (port, 3000);
ret = gp_port_usb_msg_read (port, 0x06, 0x00, 0x00, &status, 1);
if (status == 0 || status == 8)
return GP_OK;
if (status == 0xb0) {
gp_port_set_timeout (port, 200000);
ret = gp_port_usb_msg_read (port, 0x06, 0x00, 0x00,
&status, 1);
}
if (status == 0x40) {
gp_port_set_timeout (port, 400000);
ret = gp_port_usb_msg_read (port, 0x06, 0x00, 0x00,
&status, 1);
}
}
return GP_ERROR;
}
/*
* FIXME
*/
int
pccam300_delete_file (GPPort *port, GPContext *context, int index)
{
return GP_ERROR_NOT_SUPPORTED;
}
int
pccam300_delete_all (GPPort *port, GPContext *context)
{
CHECK (gp_port_usb_msg_write (port, 0x4, 0x0, 0x0, NULL, 0));
CHECK (pccam300_wait_for_status (port));
CHECK (gp_port_usb_msg_write (port, 0x9, 0x0, 0x1, NULL, 0));
CHECK (pccam300_wait_for_status (port));
return GP_OK;
}
int
pccam300_get_filecount (GPPort *port, int *filecount)
{
uint8_t response;
gp_port_set_timeout (port, 400000);
CHECK (gp_port_usb_msg_read (port, 0x08, 0x00, 0x00, &response, 0x01));
*filecount = response;
return GP_OK;
}
int
pccam300_get_filesize (GPPort *port, unsigned int index,
unsigned int *filesize)
{
uint8_t response[3];
uint16_t i = index;
gp_port_set_timeout (port, 400000);
CHECK (gp_port_usb_msg_read (port, 0x08, i, 0x0001, response, 0x03));
*filesize = (response[0] & 0xff)
+ (response[1] & 0xff) * 0x100 + (response[2] & 0xff) * 0x10000;
return GP_OK;
}
int
pccam300_get_mem_info (GPPort *port, GPContext *context, int *totalmem,
int *freemem)
{
unsigned char response[4];
int ret;
gp_port_set_timeout (port, 400000);
ret = gp_port_usb_msg_read (port, 0x60, 0x00, 0x02, response, 0x04);
*totalmem = response[2] * 65536 + response[1] * 256 + response[0];
CHECK (pccam300_wait_for_status (port));
ret = gp_port_usb_msg_read (port, 0x60, 0x00, 0x03, response, 0x04);
*freemem = response[2] * 65536 + response[1] * 256 + response[0];
CHECK (pccam300_wait_for_status (port));
return GP_OK;
}
int
pccam300_get_file (GPPort *port, GPContext *context, int index,
unsigned char **data, unsigned int *size,
unsigned int *type)
{
int data_size, r;
uint8_t *buf = NULL;
/* This is somewhat strange, but works, and the win driver does the
* same. Apparently requesting the file size twice triggers the
* download of the file. */
CHECK (pccam300_get_filesize (port, index, &data_size));
CHECK (pccam300_get_filesize (port, index, &data_size));
/* The jpeg header we will download after the data itself is 623
* bytes long. The first 0x200 bytes of the data appear to be
* garbage, they are overwritten by the header. */
*size = data_size + 623 - 0x200;
if (!(buf = malloc (*size)))
return GP_ERROR_NO_MEMORY;
/* Read the data into the buffer overlapping the header area by
* 0x200 bytes. */
r = gp_port_read (port, buf + 623 - 0x200, data_size);
if (r < GP_OK) {
free (buf);
return r;
}
/* FIXME: if we find a RIFF marker in the data stream, assume that
* this is an avi, for now
* NWG: Sat 18th January 2003.
*/
if (buf[0x243] == 'R' && buf[0x244] == 'I' &&
buf[0x245] == 'F' && buf[0x246] == 'F')
{
/* maybe an avi, but could be a wav too */
*type = PCCAM300_MIME_AVI;
memmove(buf, buf + 623 - 0x200, data_size);
*size = data_size;
} else {
/* offset 0x8 in the downloaded data contains the identifier
* we need to request the correct header.
*/
CHECK(gp_port_usb_msg_read(port, 0x0b, buf[623 - 0x200 + 8],
0x3, buf, 623));
*type = PCCAM300_MIME_JPEG;
}
*data = buf;
return GP_OK;
}
int
pccam300_init (GPPort *port, GPContext *context)
{
CHECK (gp_port_usb_msg_write (port, 0xe0, 0x00, 0x1, NULL, 0x00));
CHECK (pccam300_wait_for_status (port));
return GP_OK;
}
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