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/* jl2005c.c
*
* Copyright (C) 2006-2010 Theodore Kilgore <kilgota@auburn.edu>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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
*/
#define _DEFAULT_SOURCE
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include <string.h>
#include <math.h>
#include <gphoto2/gphoto2.h>
#include <gphoto2/gphoto2-port.h>
#include "libgphoto2/gphoto2-endian.h"
#include "jl2005c.h"
#define GP_MODULE "jl2005c"
/* do not sleep during fuzzing */
#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
# define usleep(x)
#endif
int
jl2005c_init (Camera *camera, GPPort *port, CameraPrivateLibrary *priv)
{
char response;
int model_string = 0;
/* Needs to be big enough to hold (0xfff + 3) * 0x10 */
unsigned char info[0x4020];
const char camera_id[] = {0x4a, 0x4c, 0x32, 0x30, 0x30, 0x35};
int alloc_table_size;
int attempts = 0;
restart:
alloc_table_size = 0;
memset(info, 0, sizeof(info));
GP_DEBUG("Running jl2005c_init\n");
if (priv->init_done) {
gp_port_close(port);
usleep (100000);
gp_port_open(port);
}
set_usb_in_endpoint (camera, 0x84);
gp_port_write (port, "\x08\x00", 2);
usleep (10000);
gp_port_write (port, "\x95\x60", 2);
jl2005c_read_data (port, &response, 1);
model_string = response;
gp_port_write (port, "\x95\x61", 2);
jl2005c_read_data (port, &response, 1);
model_string += (response & 0xff) << 8;
gp_port_write (port, "\x95\x62", 2);
jl2005c_read_data (port, &response, 1);
model_string += (response & 0xff) << 16;
gp_port_write (port,"\x95\x63" , 2);
jl2005c_read_data (port, &response, 1);
model_string += (response & 0xff) << 24;
GP_DEBUG("Model string is %08x\n", model_string);
gp_port_write (port, "\x95\x64", 2);
jl2005c_read_data (port, &response, 1);
gp_port_write (port, "\x95\x65", 2);
jl2005c_read_data (port, &response, 1);
/* Number of pix returned here, but not reliably reported */
priv->nb_entries = response & 0xff;
GP_DEBUG("%d frames in the camera (unreliable!)\n", priv->nb_entries);
gp_port_write (port, "\x95\x66", 2);
jl2005c_read_data (port, &response, 1);
gp_port_write (port, "\x95\x67", 2);
jl2005c_read_data (port, &response, 1);
gp_port_write (port, "\x95\x68", 2);
jl2005c_read_data (port, &response, 1);
gp_port_write (port, "\x95\x69", 2);
jl2005c_read_data (port, &response, 1);
gp_port_write (port, "\x95\x6a", 2);
jl2005c_read_data (port, &response, 1);
gp_port_write (port, "\x95\x6b", 2);
jl2005c_read_data (port, &response, 1);
gp_port_write (port, "\x95\x6c", 2);
jl2005c_read_data (port, &response, 1);
priv->data_to_read = (response & 0xff) * 0x100;
gp_port_write (port, "\x95\x6d", 2);
jl2005c_read_data (port, &response, 1);
priv->data_to_read += (response&0xff);
priv->total_data_in_camera = priv->data_to_read;
GP_DEBUG ("blocks_to_read = 0x%lx = %lu\n", priv->data_to_read,
priv->data_to_read);
gp_port_write (port, "\x95\x6e", 2);
jl2005c_read_data (port, &response, 1);
alloc_table_size = (response & 0xff) * 0x200;
GP_DEBUG("alloc_table_size = 0x%02x * 0x200 = 0x%x\n",
response & 0xff, (response & 0xff) * 0x200);
gp_port_write (port, "\x95\x6f", 2);
jl2005c_read_data (port, &response, 1);
gp_port_write (port, "\x0a\x00", 2);
usleep (10000);
/* Switch the inep over to 0x82. It stays there ever after. */
set_usb_in_endpoint (camera, 0x82);
/* Read the first block of the allocation table. */
jl2005c_read_data (port, (char *)info, 0x200);
if (strncmp(camera_id, (char*)info, 6)) {
GP_DEBUG("Error downloading alloc table\n");
GP_DEBUG("Init attempted %d times\n", attempts + 1);
attempts++;
if (attempts == 3) {
GP_DEBUG("Third try. Giving up\n");
gp_port_write(port, "\x07\x00", 2);
return GP_ERROR;
}
goto restart;
}
/* Now check the number of photos. That is found in byte 13 of line 0
* of the allocation table.
*/
priv->nb_entries = (info[12] & 0xff) * 0x100 | (info[13] & 0xff);
GP_DEBUG("Number of entries is recalculated as %d\n",
priv->nb_entries);
/* Just in case there was a problem, we now recalculate the total
* alloc_table_size. */
alloc_table_size = priv->nb_entries * 0x10 + 0x30;
if (alloc_table_size%0x200)
alloc_table_size += 0x200 - (alloc_table_size%0x200);
/* However, we have already just now downloaded 0x200 bytes, so
* when downloading the rest of the table we correct for that and
* just download whatever remains of the information block.
*/
if (alloc_table_size > 0x200)
gp_port_read(port, (char *)info + 0x200,
alloc_table_size - 0x200);
memmove(priv->table, info + 0x30, alloc_table_size - 0x30);
priv->model = info[6];
GP_DEBUG("Model is %c\n", priv->model);
switch (priv->model) {
case 0x43:
case 0x44:
priv->blocksize = 0x200;
break;
case 0x42:
priv->blocksize = 0x80;
break;
default:
GP_DEBUG("Unknown model, unknown blocksize\n");
return GP_ERROR_NOT_SUPPORTED;
}
GP_DEBUG("camera's blocksize = 0x%x = %d\n", priv->blocksize,
priv->blocksize);
/* Now a more responsible calculation of the amount of data in the
* camera, based upon the allocation table. */
priv->data_to_read = info[10] * 0x100 | info[11];
priv->data_to_read -= info[8] * 0x100 | info[9];
priv->data_to_read *= priv->blocksize;
priv->total_data_in_camera = priv->data_to_read;
GP_DEBUG ("data_to_read = 0x%lx = %lu\n", priv->data_to_read,
priv->data_to_read);
GP_DEBUG ("total_data_in_camera = 0x%lx = %lu\n", priv->data_to_read,
priv->data_to_read);
priv->can_do_capture = 0;
if (info[7] & 0x04)
priv->can_do_capture = 1;
priv->bytes_read_from_camera = 0;
priv->bytes_put_away = 0;
priv->init_done = 1;
GP_DEBUG("Leaving jl2005c_init\n");
return GP_OK;
}
int jl2005c_open_data_reg (Camera *camera, GPPort *port)
{
gp_port_write (port, "\x0b\x00",2);
usleep (10000);
GP_DEBUG("Opening data register.\n");
camera->pl->data_reg_opened = 1;
return GP_OK;
}
int
jl2005c_get_pic_data_size (CameraPrivateLibrary *priv, Info *table, int n)
{
int size;
GP_DEBUG("table[16 * n + 7] = %02X\n", table[16 * n + 7]);
size = table[0x10 * n + 6] * 0x100 | table[0x10 * n + 7];
size *= priv->blocksize;
GP_DEBUG("size = 0x%x = %d\n", size, size);
return (size);
}
unsigned long
jl2005c_get_start_of_photo(CameraPrivateLibrary *priv, Info *table,
unsigned int n)
{
unsigned long start;
start = table[0x10 * n + 0x0c] * 0x100 | table[0x10 * n + 0x0d];
start -= table[0x0c] * 0x100 | table[0x0d];
start *= priv->blocksize;
return start;
}
int
set_usb_in_endpoint (Camera *camera, int inep)
{
GPPortSettings settings;
gp_port_get_settings ( camera ->port, &settings);
if(settings.usb.inep != inep)
settings.usb.inep = inep;
GP_DEBUG("inep reset to %02X\n", inep);
return gp_port_set_settings ( camera->port, settings);
}
int
jl2005c_read_data (GPPort *port, char *data, int size)
{
/* These cameras tend to be slow. */
usleep (10000);
gp_port_read (port, data, size);
usleep (10000);
return GP_OK;
}
int jl2005c_reset (Camera *camera, GPPort *port)
{
int downloadsize = MAX_DLSIZE;
/* If any data has been downloaded, these cameras want all data to be
* dumped before exit. If that is not yet done, then do it now! */
if(camera->pl->data_reg_opened) {
while (camera->pl->bytes_read_from_camera <
camera->pl->total_data_in_camera ) {
if (!camera->pl->data_cache )
camera->pl->data_cache = malloc (MAX_DLSIZE);
downloadsize = MAX_DLSIZE;
if (camera->pl->bytes_read_from_camera + MAX_DLSIZE >=
camera->pl->total_data_in_camera )
downloadsize = camera->pl->total_data_in_camera -
camera->pl->bytes_read_from_camera;
if (downloadsize)
jl2005c_read_data (camera->port,
(char *) camera->pl->data_cache,
downloadsize);
camera->pl->bytes_read_from_camera += downloadsize;
}
}
gp_port_write(port, "\x07\x00", 2);
camera->pl->data_reg_opened = 0;
return GP_OK;
}
int jl2005c_delete_all (Camera *camera, GPPort *port)
{
gp_port_write(port, "\x09\x00", 2);
usleep(10000);
gp_port_write(port, "\x07\x00", 2);
return GP_OK;
}
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