/********************************************************************** * Minolta Dimage V digital camera communication library * * Copyright © 2000,2001 Gus Hartmann * * * * 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 * * * **********************************************************************/ /* $Id: download.c 8073 2005-06-11 21:10:45Z hun $ */ #include "config.h" #include "dimagev.h" #define GP_MODULE "dimagev" int dimagev_get_picture(dimagev_t *dimagev, int file_number, CameraFile *file) { int length, total_packets, i; unsigned long size = 0; dimagev_packet *p, *r; unsigned char char_buffer, command_buffer[3]; char *data; #ifdef _gphoto_exif_ exifparser exifdat; #endif if ( dimagev->data->host_mode != (unsigned char) 1 ) { dimagev->data->host_mode = (unsigned char) 1; if ( dimagev_send_data(dimagev) < GP_OK ) { GP_DEBUG( "dimagev_get_picture::unable to set host mode"); return GP_ERROR_IO; } } GP_DEBUG( "dimagev_get_picture::file_number is %d", file_number); /* Maybe check if it exists? Check the file type? */ /* First make the command packet. */ command_buffer[0] = 0x04; command_buffer[1] = (unsigned char)( file_number / 256 ); command_buffer[2] = (unsigned char)( file_number % 256 ); if ( ( p = dimagev_make_packet(command_buffer, 3, 0) ) == NULL ) { GP_DEBUG( "dimagev_get_picture::unable to allocate command packet"); return GP_ERROR_NO_MEMORY; } if ( gp_port_write(dimagev->dev, p->buffer, p->length) < GP_OK ) { GP_DEBUG( "dimagev_get_picture::unable to send set_data packet"); free(p); return GP_ERROR_IO; } else if ( gp_port_read(dimagev->dev, &char_buffer, 1) < GP_OK ) { GP_DEBUG( "dimagev_get_picture::no response from camera"); free(p); return GP_ERROR_IO; } free(p); switch ( char_buffer ) { case DIMAGEV_ACK: break; case DIMAGEV_NAK: GP_DEBUG( "dimagev_get_picture::camera did not acknowledge transmission"); return dimagev_get_picture(dimagev, file_number, file); /* return GP_ERROR_IO;*/ case DIMAGEV_CAN: GP_DEBUG( "dimagev_get_picture::camera cancels transmission"); return GP_ERROR_IO; default: GP_DEBUG( "dimagev_get_picture::camera responded with unknown value %x", char_buffer); return GP_ERROR_IO; } if ( ( p = dimagev_read_packet(dimagev) ) == NULL ) { GP_DEBUG( "dimagev_get_picture::unable to read packet"); return GP_ERROR_IO; } if ( ( r = dimagev_strip_packet(p) ) == NULL ) { GP_DEBUG( "dimagev_get_picture::unable to strip packet"); free(p); return GP_ERROR_NO_MEMORY; } free(p); total_packets = (int) r->buffer[0]; length = ( r->length - 1 ); /* Allocate an extra byte just in case. */ if ( ( data = malloc((size_t)((993 * total_packets) + 1)) ) == NULL ) { GP_DEBUG( "dimagev_get_picture::unable to allocate buffer for file"); free(r); return GP_ERROR_NO_MEMORY; } memcpy(data, &(r->buffer[1]), (size_t) r->length ); size += ( r->length - 2 ); free(r); for ( i = 0 ; i < ( total_packets -1 ) ; i++ ) { char_buffer=DIMAGEV_ACK; if ( gp_port_write(dimagev->dev, &char_buffer, 1) < GP_OK ) { GP_DEBUG( "dimagev_get_picture::unable to send ACK"); return GP_ERROR_IO; } if ( ( p = dimagev_read_packet(dimagev) ) == NULL ) { /* GP_DEBUG( "dimagev_get_picture::unable to read packet"); return GP_ERROR_IO; */ GP_DEBUG( "dimagev_get_picture::sending NAK to get retry"); char_buffer=DIMAGEV_NAK; if ( gp_port_write(dimagev->dev, &char_buffer, 1) < GP_OK ) { GP_DEBUG( "dimagev_get_picture::unable to send NAK"); return GP_ERROR_IO; } if ( ( p = dimagev_read_packet(dimagev) ) == NULL ) { GP_DEBUG( "dimagev_get_picture::unable to read packet"); return GP_ERROR_IO; } } if ( ( r = dimagev_strip_packet(p) ) == NULL ) { GP_DEBUG( "dimagev_get_picture::unable to strip packet"); free(p); return GP_ERROR_NO_MEMORY; } free(p); memcpy(&( data[ ( size + 1) ] ), r->buffer, (size_t) r->length ); size += r->length; free(r); } size++; char_buffer=DIMAGEV_EOT; if ( gp_port_write(dimagev->dev, &char_buffer, 1) < GP_OK ) { GP_DEBUG( "dimagev_get_picture::unable to send ACK"); return GP_ERROR_IO; } if ( gp_port_read(dimagev->dev, &char_buffer, 1) < GP_OK ) { GP_DEBUG( "dimagev_get_picture::no response from camera"); return GP_ERROR_IO; } switch ( char_buffer ) { case DIMAGEV_ACK: break; case DIMAGEV_NAK: GP_DEBUG( "dimagev_get_picture::camera did not acknowledge transmission"); return GP_ERROR_IO; case DIMAGEV_CAN: GP_DEBUG( "dimagev_get_picture::camera cancels transmission"); return GP_ERROR_IO; default: GP_DEBUG( "dimagev_get_picture::camera responded with unknown value %x", char_buffer); return GP_ERROR_IO; } #ifdef _gphoto_exif_ exifdat.header = data; exifdat.data = data + 12 ; if ( gpi_exif_stat(&exifdat) != 0 ) { GP_DEBUG( "dimagev_get_picture::unable to stat EXIF tags"); return GP_OK; } /* gpi_exif_dump(&exifdat); */ #endif gp_file_set_data_and_size (file, data, size); return GP_OK; } int dimagev_get_thumbnail(dimagev_t *dimagev, int file_number, CameraFile *file) { dimagev_packet *p, *r; unsigned char char_buffer, command_buffer[3], *ycrcb_data; char *data; long int size = 0; if ( dimagev->data->host_mode != (unsigned char) 1 ) { dimagev->data->host_mode = (unsigned char) 1; if ( dimagev_send_data(dimagev) < GP_OK ) { GP_DEBUG( "dimagev_get_thumbnail::unable to set host mode"); return GP_ERROR_IO; } } /* First make the command packet. */ command_buffer[0] = 0x0d; command_buffer[1] = (unsigned char)( file_number / 256 ); command_buffer[2] = (unsigned char)( file_number % 256 ); if ( ( p = dimagev_make_packet(command_buffer, 3, 0) ) == NULL ) { GP_DEBUG( "dimagev_get_thumbnail::unable to allocate command packet"); return GP_ERROR_NO_MEMORY; } if ( gp_port_write(dimagev->dev, p->buffer, p->length) < GP_OK ) { GP_DEBUG( "dimagev_get_thumbnail::unable to send set_data packet"); free(p); return GP_ERROR_IO; } else if ( gp_port_read(dimagev->dev, &char_buffer, 1) < GP_OK ) { GP_DEBUG( "dimagev_get_thumbnail::no response from camera"); free(p); return GP_ERROR_IO; } free(p); switch ( char_buffer ) { case DIMAGEV_ACK: break; case DIMAGEV_NAK: GP_DEBUG( "dimagev_get_thumbnail::camera did not acknowledge transmission"); return dimagev_get_thumbnail(dimagev, file_number, file); /* return GP_ERROR_IO;*/ case DIMAGEV_CAN: GP_DEBUG( "dimagev_get_thumbnail::camera cancels transmission"); return GP_ERROR_IO; default: GP_DEBUG( "dimagev_get_thumbnail::camera responded with unknown value %x", char_buffer); return GP_ERROR_IO; } if ( ( p = dimagev_read_packet(dimagev) ) == NULL ) { GP_DEBUG( "dimagev_get_thumbnail::unable to read packet"); return GP_ERROR_IO; } if ( ( r = dimagev_strip_packet(p) ) == NULL ) { GP_DEBUG( "dimagev_get_thumbnail::unable to strip packet"); free(p); return GP_ERROR_NO_MEMORY; } free(p); /* Unlike normal images, we are guaranteed 9600 bytes *exactly*. */ /* Allocate an extra byte just in case. */ if ( ( ycrcb_data = malloc(9600) ) == NULL ) { GP_DEBUG( "dimagev_get_thumbnail::unable to allocate buffer for file"); free(r); return GP_ERROR_NO_MEMORY; } memcpy(ycrcb_data, r->buffer, (size_t) r->length ); size += r->length - 1 ; free(r); while ( size < 9599 ) { char_buffer=DIMAGEV_ACK; if ( gp_port_write(dimagev->dev, &char_buffer, 1) < GP_OK ) { GP_DEBUG( "dimagev_get_thumbnail::unable to send ACK"); free(ycrcb_data); return GP_ERROR_IO; } if ( ( p = dimagev_read_packet(dimagev) ) == NULL ) { GP_DEBUG( "dimagev_get_thumbnail::unable to read packet"); free(ycrcb_data); return GP_ERROR_IO; } if ( ( r = dimagev_strip_packet(p) ) == NULL ) { GP_DEBUG( "dimagev_get_thumbnail::unable to strip packet"); free(p); free(ycrcb_data); return GP_ERROR_NO_MEMORY; } free(p); memcpy(&( ycrcb_data[ ( size + 1) ] ), r->buffer, (size_t) r->length ); size += r->length; free(r); GP_DEBUG( "dimagev_get_thumbnail::current file size is %ld", size); } size++; char_buffer=DIMAGEV_EOT; if ( gp_port_write(dimagev->dev, &char_buffer, 1) < GP_OK ) { GP_DEBUG( "dimagev_get_thumbnail::unable to send ACK"); free(ycrcb_data); return GP_ERROR_IO; } if ( gp_port_read(dimagev->dev, &char_buffer, 1) < GP_OK ) { GP_DEBUG( "dimagev_get_thumbnail::no response from camera"); free(ycrcb_data); return GP_ERROR_IO; } switch ( char_buffer ) { case DIMAGEV_ACK: break; case DIMAGEV_NAK: GP_DEBUG( "dimagev_get_thumbnail::camera did not acknowledge transmission"); free(ycrcb_data); return GP_ERROR_IO; case DIMAGEV_CAN: GP_DEBUG( "dimagev_get_thumbnail::camera cancels transmission"); free(ycrcb_data); return GP_ERROR_IO; default: GP_DEBUG( "dimagev_get_thumbnail::camera responded with unknown value %x", char_buffer); free(ycrcb_data); return GP_ERROR_IO; } data = dimagev_ycbcr_to_ppm(ycrcb_data); size = 14413; gp_file_set_data_and_size (file, data, size); return GP_OK; }