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/* pdrm11.c -- interfaces directly with the camera
*
* Copyright 2003 David Hogue <david@jawa.gotdns.org>
*
* 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
*/
#include "config.h"
#include "pdrm11.h"
#include <string.h>
#include <stdlib.h>
#include <gphoto2/gphoto2.h>
#include "gphoto2-endian.h"
#define GP_MODULE "pdrm11"
#define ETIMEDOUT 110
static int pdrm11_select_file(GPPort *port, uint16_t file);
int pdrm11_init(GPPort *port)
{
unsigned char buf[20];
int timeout = 50;
gp_port_set_timeout(port,1000);
/* exactly what windows driver does */
gp_port_usb_msg_read (port, 0x01, PDRM11_CMD_READY, 0, (char *)buf, 4);
gp_port_usb_msg_write(port, 0x01, PDRM11_CMD_PING3, 0, NULL, 0);
gp_port_usb_msg_read (port, 0x01, PDRM11_CMD_READY, 0, (char *)buf, 4);
gp_port_usb_msg_write(port, 0x01, PDRM11_CMD_INIT1, 0, NULL, 0);
gp_port_usb_msg_read (port, 0x01, PDRM11_CMD_READY, 0, (char *)buf, 4);
gp_port_usb_msg_write(port, 0x01, PDRM11_CMD_INIT2, 0, NULL, 0);
gp_port_usb_msg_read (port, 0x01, PDRM11_CMD_READY, 0, (char *)buf, 4);
gp_port_usb_msg_read (port, 0x01, PDRM11_CMD_ZERO, 0, (char *)buf, 2);
if(buf[0] || buf[1]) {
/* I haven't seen anything other than 00 00 yet
* unless the connection is bad */
GP_DEBUG("PDRM11_CMD_ZERO: %x %x", buf[0], buf[1]);
return(GP_ERROR);
}
/* wait til the camera is ready */
do {
usleep(200000);
GP_DEBUG("waiting...");
timeout--;
if( gp_port_usb_msg_read(port, 0x01, PDRM11_CMD_READY, 0, (char *)buf, 4) == -ETIMEDOUT )
timeout = 0;
} while( !((buf[3] == 0x25) && (buf[0] == 1)) && timeout );
/* what good is this? */
usleep(400000);
if(!timeout)
return(GP_ERROR_TIMEOUT);
else
return(GP_OK);
}
int pdrm11_get_filenames(GPPort *port, CameraList *list)
{
int i, j;
uint32_t numPics;
char name[20];
char buf[30];
gp_port_set_timeout(port, 10000);
CHECK(gp_port_usb_msg_read(port, 0x01, PDRM11_CMD_GET_NUMPICS, 0, buf, 10));
/* trying to remain endian friendly */
numPics = le16atoh(&buf[2]) + (le16atoh(&buf[0]) * 1024);
GP_DEBUG("found %d pictures", numPics);
for(i=1; i<numPics+1; i++) {
CHECK( pdrm11_select_file(port, i) );
CHECK(gp_port_usb_msg_read(port, 0x01, 0xe600, i, buf, 14));
/* the filename is 12 chars starting at the third byte */
CHECK(gp_port_usb_msg_read(port, 0x01, PDRM11_CMD_GET_FILENAME, i, buf, 26));
for(j=0; j<12; j+=2) {
name[j] = buf[j+2+1];
name[j+1] = buf[j+2];
}
name[12] = '\0';
GP_DEBUG("%s",name);
gp_list_append(list, name, NULL);
}
return(GP_OK);
}
static int pdrm11_select_file(GPPort *port, uint16_t file)
{
char buf[10];
uint16_t picNum = htole16(file);
uint16_t file_type;
/* byte 4 of PDRM11_CMD_GET_INFO determines if the file is a jpeg or tiff */
CHECK(gp_port_usb_msg_read(port, 0x01, PDRM11_CMD_GET_INFO, file, buf, 8));
file_type = htole16(buf[4]);
CHECK( gp_port_usb_msg_write(port, 0x01, PDRM11_CMD_SELECT_PIC1, file, (char*)&picNum, 2) );
CHECK( gp_port_usb_msg_write(port, 0x01, PDRM11_CMD_SELECT_PIC2, file, (char*)&file_type, 2) );
return(GP_OK);
}
#if 0
static int pdrm11_ping(GPPort *port)
{
CHECK( gp_port_usb_msg_write(port, 0x01, PDRM11_CMD_PING1, 1, NULL, 0) );
CHECK( gp_port_usb_msg_write(port, 0x01, PDRM11_CMD_PING2, 1, NULL, 0) );
return(GP_OK);
}
#endif
int pdrm11_get_file(CameraFilesystem *fs, const char *filename, CameraFileType type,
CameraFile *file, GPPort *port, uint16_t picNum)
{
uint32_t size = 0;
uint16_t thumbsize = 0;
uint8_t buf[30];
uint8_t *image;
uint8_t temp;
int i;
int ret;
int file_type;
gp_port_set_timeout(port,10000);
CHECK( pdrm11_select_file(port, picNum) );
if(type == GP_FILE_TYPE_PREVIEW) {
CHECK(gp_port_usb_msg_read(port, 0x01, PDRM11_CMD_GET_INFO, picNum, (char *)buf, 8));
file_type = buf[4];
CHECK( gp_port_usb_msg_read(port, 0x01, PDRM11_CMD_GET_THUMBSIZE, picNum, (char *)buf, 14) );
thumbsize = le16atoh( &buf[8] );
/* add 1 to file size only for jpeg thumbnails */
if(file_type == 1) {
GP_DEBUG("thumbnail file_type: %s.", "jpeg");
size = (uint32_t)thumbsize + 1;
} else if(file_type == 2) {
/* NOTE: tiff thumbnails are 160x120 pixel 8bpc rgb images, NOT jpegs... */
GP_DEBUG("thumbnail file_type: %s.", "tiff");
size = (uint32_t)thumbsize;
} else {
GP_DEBUG("Unknown thumbnail file format!");
return(GP_ERROR_NOT_SUPPORTED);
}
} else if(type == GP_FILE_TYPE_NORMAL) {
CHECK( gp_port_usb_msg_read(port, 0x01, PDRM11_CMD_GET_FILESIZE, picNum, (char *)buf, 26) );
size = le32atoh( &buf[18] );
} else {
GP_DEBUG("Unsupported file type!");
return(GP_ERROR_NOT_SUPPORTED);
}
GP_DEBUG("size: %d 0x%x", size, size);
image = malloc(sizeof(char)*size);
if(!image)
return(GP_ERROR_NO_MEMORY);
if(type == GP_FILE_TYPE_PREVIEW) {
CHECK_AND_FREE( gp_port_usb_msg_write(port, 0x01, PDRM11_CMD_GET_THUMB, picNum, NULL, 0), image );
} else {
CHECK_AND_FREE( gp_port_usb_msg_write(port, 0x01, PDRM11_CMD_GET_PIC, picNum, NULL, 0), image );
}
ret = gp_port_read(port, (char *)image, size);
if(ret != size) {
GP_DEBUG("failed to read from port. Giving it one more try...");
ret = gp_port_read(port, (char *)image, size);
if(ret != size) {
GP_DEBUG("gp_port_read returned %d 0x%x. size: %d 0x%x", ret, ret, size, size);
free (image);
return(GP_ERROR_IO_READ);
}
}
/* swap the bytes for the thumbnail, but not the file */
if(type == GP_FILE_TYPE_PREVIEW) {
for(i=0; i<size; i+=2) {
temp = image[i];
image[i] = image[i+1];
image[i+1] = temp;
}
}
gp_file_set_mime_type(file, GP_MIME_JPEG);
gp_file_set_data_and_size(file, (char *)image, size);
return(GP_OK);
}
int pdrm11_delete_file(GPPort *port, int picNum)
{
uint8_t buf[2];
/* for some reason the windows driver sends b200 twice
* once in pdrm11_select_file and once before. dunno why */
CHECK( gp_port_usb_msg_write(port, 0x01, PDRM11_CMD_SELECT_PIC1, picNum, (char*)&picNum, 2) );
CHECK( pdrm11_select_file(port, picNum) );
/* should always be 00 00 */
gp_port_usb_msg_read(port, 0x01, PDRM11_CMD_DELETE, picNum, (char *)buf, 2);
if( (buf[0] != 0) || (buf[1] !=0) ) {
GP_DEBUG("should have read 00 00. actually read %2x %2x.", buf[0], buf[1]);
return(GP_ERROR);
}
return(GP_OK);
}
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