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/*
* digigr8.c
*
* Part of libgphoto2/camlibs/digigr8
* Here are the functions which are needed to get data from the camera.
*
* Copyright (c) 2005 Theodore Kilgore <kilgota@auburn.edu>
* Camera library support under libgphoto2.1.1 for camera(s)
* with chipset from Service & Quality Technologies, Taiwan.
* Cameras supported by this driver have Product ID 0x905C, 0x9050, or.
* 0x913D.
*
* Licensed under GNU Lesser General Public License, as part of Gphoto
* camera support project. For a copy of the license, see the file
* COPYING in the main source tree of libgphoto2.
*/
#include <config.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <fcntl.h>
#include <string.h>
#include <math.h>
#ifdef OS2
#include <db.h>
#endif
#include <gphoto2/gphoto2.h>
#include <gphoto2/gphoto2-port.h>
#include "digigr8.h"
#define GP_MODULE "digigr8"
#define SQWRITE gp_port_usb_msg_write
#define SQREAD gp_port_usb_msg_read
int
digi_init (GPPort *port, CameraPrivateLibrary *priv)
{
char c[0x14];
int i,j=0;
unsigned char *catalog = calloc(0x4010,1);
unsigned char *catalog_tmp;
if (!catalog) return GP_ERROR_NO_MEMORY;
SQWRITE (port, 0x0c, 0x14f4, 0x0, NULL, 0);
SQREAD (port, 0x0c, 0xf5, 0x00, c, 0x14);
SQWRITE (port, 0x0c, 0x1440, 0x110f, NULL, 0);
digi_reset (port);
SQWRITE (port, 0x0c, 0x14f0, 0x0, NULL, 0);
gp_port_read (port, c, 0x14);
digi_reset(port);
SQWRITE (port, 0x0c, 0x20, 0x40, NULL, 0);
gp_port_read(port, (char *)catalog, 0x4000); /* We need 16 bytes for each photo. */
digi_reset (port);
/* The first occurence of a zero denotes end of files entries */
for (i=0; i<0x4000 && catalog[i]; i+=16);
priv->nb_entries = i>>4;
catalog_tmp = realloc(catalog, i+16);
if (!catalog_tmp) return GP_ERROR_NO_MEMORY;
catalog = catalog_tmp;
memset (catalog+i, 0, 16);
if (i) {
/*
* 0x913c cameras allow individual photo deletion. This causes
* the relevant catalog line to start with 0x64. So the related
* lines of config data must be removed, and the deleted
* images need to be cast out from the count.
*/
for (j=0; j<i; j+=16) {
if ((!catalog[j]) || (catalog[j] == 0x64)) {
memmove(catalog+j, catalog+j+16, i-j);
priv->nb_entries -- ;
}
}
priv->catalog = catalog;
} else {
free (catalog);
priv->catalog = NULL; /* We just have freed catalog_tmp */
}
digi_reset (port);
priv->last_fetched_entry = -1;
priv->init_done=1;
return GP_OK;
}
unsigned int
digi_get_comp_ratio (CameraPrivateLibrary *priv, int entry)
{
switch (priv->catalog[16*entry]) {
case 0x61:
case 0x62:
case 0x63:
case 0x76: return 1;
case 0x41:
case 0x42:
case 0x43:
case 0x52:
case 0x53:
case 0x56:
case 0x72: return 0;
default:
GP_DEBUG ("Your camera has unknown resolution settings.\n");
return GP_ERROR;
}
}
unsigned int
digi_get_data_size (CameraPrivateLibrary *priv, int entry)
{
return ((priv->catalog[16*entry + 6] <<16)
| (priv->catalog[16*entry + 5] <<8)
| (priv->catalog[16*entry + 4] ) );
}
unsigned int
digi_get_picture_width (CameraPrivateLibrary *priv, int entry)
{
switch (priv->catalog[16*entry]) {
case 0x41:
case 0x52:
case 0x61: return 352;
case 0x42:
case 0x62:
case 0x72: return 176;
case 0x43:
case 0x53:
case 0x63: return 320;
case 0x56:
case 0x76: return 640;
default:
GP_DEBUG ("Your pictures have unknown width.\n");
return 0;
}
}
int
digi_rewind (GPPort *port, CameraPrivateLibrary *priv)
{
static char dummy_buf[0x4000];
GP_DEBUG("REWIND cam's data pointer");
/* One has to read the catalog to rewind the data stream...
* I don't know if it's by design. There ought to be something better to do... :-/
*/
digi_reset(port);
SQWRITE (port, 0x0c, 0x20, 0x40, NULL, 0); /* Access config */
gp_port_read(port, dummy_buf, 0x4000);
digi_reset (port);
priv->last_fetched_entry = -1;
return GP_OK;
}
int
digi_reset (GPPort *port)
{
/* Release current register */
SQWRITE (port, 0x0c, 0xa0, 0x00, NULL, 0);
return GP_OK;
}
int
digi_read_picture_data (GPPort *port, unsigned char *data, unsigned int size, int n )
{
unsigned int remainder = size % 0x8000;
unsigned int offset = 0;
int ret;
if (!n) {
SQWRITE (port, 0x0c, 0x30, 0x00, NULL, 0);
}
while ((offset + 0x8000 < size)) {
ret = gp_port_read (port, (char *)data + offset, 0x8000);
if (ret < GP_OK) return ret;
offset = offset + 0x8000;
}
ret = gp_port_read (port, (char *)data + offset, remainder);
if (ret < GP_OK) return ret;
return GP_OK;
}
int digi_delete_all (GPPort *port, CameraPrivateLibrary *priv)
{
int size;
int num_pics;
unsigned char get_size[0x50];
unsigned char *junk=NULL;
num_pics = priv->nb_entries;
GP_DEBUG("number of entries is %i\n", num_pics);
digi_reset (port);
digi_reset (port);
if(!num_pics) {
GP_DEBUG("Camera is already empty!\n");
return GP_OK;
}
SQWRITE (port, 0x0c, 0x1440, 0x110f, NULL, 0);
if ((gp_port_read(port, (char *)get_size, 0x50)!=0x50)) {
GP_DEBUG("Error in reading data\n");
return GP_ERROR;
}
GP_DEBUG("get_size[0x40] = 0x%x\n", get_size[0x40]);
size = get_size[0x40]|(get_size[0x41]<<8)|(get_size[0x42]<<16)|
(get_size[0x43]<<24);
GP_DEBUG("size = 0x%x\n", size);
if(size <= 0xff) {
GP_DEBUG("No size to read. This will not work.\n");
digi_reset(port);
return GP_OK;
}
junk = malloc(size);
if(! junk) {
GP_DEBUG("allocation of junk space failed\n");
return GP_ERROR_NO_MEMORY;
}
gp_port_read(port, (char *)junk, size);
free(junk);
digi_reset (port);
return GP_OK;
}
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