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/*
* commands.c
*
* Command set for the soundvision cameras
*
* Copyright 2001-2002 Vince Weaver <vince@deater.net>
*/
#include "config.h"
#include <stdio.h>
#include <errno.h>
#include <fcntl.h>
#include <string.h>
#include <stdlib.h>
#ifdef OS2
#include <db.h>
#endif
#include <gphoto2.h>
#include <gphoto2-endian.h>
#include "soundvision.h"
#include "commands.h"
#define GP_MODULE "soundvision"
/* Regular commands always 8 bytes long */
int32_t soundvision_send_command(uint32_t command, uint32_t argument,
CameraPrivateLibrary *dev) {
uint8_t cmd[12];
int result;
htole32a(&cmd[0],8); /* Length "8" in little-endian 32bits */
htole32a(&cmd[4],command); /* Command is a little-endian 32bits */
htole32a(&cmd[8],argument); /* Argument is a little-endian 32bits */
result=gp_port_write(dev->gpdev,(char *)&cmd,sizeof(cmd));
if (result<0) return result;
return GP_OK;
}
/* Filenames are always 12 bytes long */
int32_t soundvision_send_file_command(const char *filename,
CameraPrivateLibrary *dev) {
uint8_t file_cmd[16];
int result;
htole32a(&file_cmd[0],0xc); /* Length is "C" little-endian 32 bits */
strncpy(&file_cmd[4],filename,12);/* Filename is 12 bytes at the end */
result=gp_port_write(dev->gpdev,(char *)&file_cmd,sizeof(file_cmd));
if (result<0) return result;
return GP_OK;
}
/* USB-only */
int32_t soundvision_read(CameraPrivateLibrary *dev, void *buffer, int len) {
return gp_port_read(dev->gpdev, buffer, len);
}
int soundvision_reset(CameraPrivateLibrary *dev) {
int ret;
ret=soundvision_send_command(SOUNDVISION_RESET,0,dev);
if (ret<0) return ret;
return GP_OK;
}
int soundvision_get_revision(CameraPrivateLibrary *dev, char *revision) {
int ret;
char version[8];
/* uint32_t temp; */
ret = soundvision_send_command(SOUNDVISION_DONE_TRANSACTION,0,dev);
ret = soundvision_send_command(SOUNDVISION_GET_VERSION,0,dev);
if (ret<0) return ret;
ret = soundvision_read(dev, &version, sizeof(version));
if (ret<0) return ret;
strncpy(revision,version,8);
ret=soundvision_reset(dev);
if (ret<0) return ret;
/* ret = soundvision_read(dev, &temp, sizeof(temp));
if (ret<0) return ret; */
return GP_OK;
}
/* Status is a 60 byte array. I have no clue what it does */
int soundvision_get_status(CameraPrivateLibrary *dev, int *taken,
int *available, int *rawcount) {
uint8_t ss[0x60];
int32_t ret;
ret=soundvision_send_command(SOUNDVISION_STATUS, 0, dev);
if (ret < 0) {
fprintf(stderr, "soundvision_get_storage_status: error sending command\n");
return ret;
}
ret = soundvision_read(dev, (unsigned char *)&ss, sizeof(ss));
if (ret < 0) {
fprintf(stderr, "soundvision_get_storage_status: error getting count\n");
return ret;
}
soundvision_reset(dev);
return GP_OK;
}
int soundvision_photos_taken(CameraPrivateLibrary *dev) {
int32_t ret;
uint32_t numpics;
ret=soundvision_send_command(SOUNDVISION_GET_NUM_PICS, 0, dev);
if (ret < 0) {
fprintf(stderr, "soundvision_get_storage_status: error sending command\n");
return ret;
}
ret = soundvision_read(dev, &numpics, sizeof(numpics));
if (ret < 0) {
fprintf(stderr, "soundvision_get_storage_status: error getting count\n");
return ret;
}
return le32toh(numpics);
}
int soundvision_get_file_list(CameraPrivateLibrary *dev) {
char *buffer;
int32_t ret, taken, buflen;
/* It seems we need to do a "reset" packet before reading names?? */
soundvision_reset(dev);
if ( (taken=soundvision_photos_taken(dev)) < 0)
return taken;
dev->num_pictures = taken;
buflen = (taken * 13)+1; /* 12 char filenames and space for each */
/* plus trailing NULL */
buffer = malloc(buflen);
if (!buffer) {
GP_DEBUG("Could not allocate %i bytes!",
buflen);
return GP_ERROR_NO_MEMORY;
}
ret=soundvision_send_command(SOUNDVISION_GET_NAMES, buflen, dev);
if (ret < 0) {
free(buffer);
return ret;
}
ret = soundvision_read(dev, (void *)buffer, buflen);
if (ret < 0) {
free(buffer);
return ret;
}
if (dev->file_list) free(dev->file_list);
dev->file_list = malloc(taken * 13);
if (!dev->file_list) {
GP_DEBUG("Could not allocate %i bytes!",
taken*13);
free(buffer);
return (GP_ERROR_NO_MEMORY);
}
memcpy(dev->file_list, buffer, taken * 13);
free(buffer);
#if 0
taken=soundvision_photos_taken(dev);
soundvision_get_thumb_size(dev,dev->file_list);
#endif
return GP_OK;
}
int soundvision_get_thumb_size(CameraPrivateLibrary *dev, const char *filename) {
int32_t ret,temp;
uint32_t size;
ret=soundvision_send_command(SOUNDVISION_GET_THUMB_SIZE,0,dev);
if (ret<0) return ret;
/* always returns ff 0f 00 00 ??? */
ret = soundvision_read(dev, &temp, sizeof(temp));
if (ret<0) return ret;
soundvision_send_file_command(filename,dev);
if (ret<0) return ret;
ret = soundvision_read(dev, &size, sizeof(size));
if (ret<0) return ret;
return le32toh(size);
}
int soundvision_get_thumb(CameraPrivateLibrary *dev, const char *filename,
unsigned char *data,int size) {
int32_t ret,temp;
ret = soundvision_send_command(SOUNDVISION_GET_THUMB,0,dev);
if (ret<0) return ret;
/* always returns ff 0f 00 00 ??? */
ret = soundvision_read(dev, &temp, sizeof(temp));
if (ret<0) return ret;
ret=soundvision_send_file_command(filename,dev);
if (ret<0) return ret;
ret = soundvision_read(dev, data, size);
if (ret<0) return ret;
#if 0
/* Is this needed? */
soundvision_photos_taken(dev,&ret);
ret=soundvision_send_command(SOUNDVISION_END_OF_THUMB,0,dev);
if (ret<0) return ret;
ret = soundvision_read(dev, temp_string, 8);
if (ret<0) return ret;
#endif
return GP_OK;
}
int soundvision_get_pic_size(CameraPrivateLibrary *dev, const char *filename) {
int32_t ret,temp;
uint32_t size;
ret=soundvision_send_command(SOUNDVISION_GET_PIC_SIZE,0,dev);
if (ret<0) return ret;
/* always returns ff 0f 00 00 ??? */
ret = soundvision_read(dev, &temp, sizeof(temp));
if (ret<0) return ret;
ret=soundvision_send_file_command(filename,dev);
if (ret<0) return ret;
ret = soundvision_read(dev, &size, sizeof(size));
if (ret<0) return ret;
return le32toh(size);
}
int soundvision_get_pic(CameraPrivateLibrary *dev, const char *filename,
unsigned char *data,int size) {
int32_t ret,temp;
ret = soundvision_send_command(SOUNDVISION_GET_PIC,0,dev);
if (ret<0) return ret;
/* always returns ff 0f 00 00 ??? */
ret = soundvision_read(dev, &temp, sizeof(temp));
if (ret<0) return ret;
ret=soundvision_send_file_command(filename,dev);
if (ret<0) return ret;
ret = soundvision_read(dev, data, size);
if (ret<0) return ret;
#if 0
/* Have to do this after getting pic ? */
ret=soundvision_send_command(SOUNDVISION_DONE_PIC,0,dev);
if (ret<0) return ret;
#endif
return GP_OK;
}
/* thanks to heathhey3@hotmail.com for sending me the trace */
/* to implement this */
int soundvision_delete_picture(CameraPrivateLibrary *dev, const char *filename) {
int32_t ret,temp,taken;
uint8_t data[4],*buffer;
uint32_t size=4,buflen;
/* yes, we do this twice?? */
taken=soundvision_photos_taken(dev);
taken=soundvision_photos_taken(dev);
ret = soundvision_send_command(SOUNDVISION_GET_PIC_SIZE,0,dev);
if (ret<0) return ret;
/* always returns ff 0f 00 00 ??? */
ret = soundvision_read(dev, &temp, sizeof(temp));
if (ret<0) return ret;
/* Some traces show sending other than the file we want deleted? */
ret=soundvision_send_file_command(filename,dev);
if (ret<0) return ret;
ret = soundvision_read(dev, data, size);
if (ret<0) return ret;
/* Check num taken AGAIN */
taken=soundvision_photos_taken(dev);
ret = soundvision_send_command(SOUNDVISION_GET_PIC_SIZE,0,dev);
if (ret<0) return ret;
/* always returns ff 0f 00 00 ??? */
ret = soundvision_read(dev, &temp, sizeof(temp));
if (ret<0) return ret;
ret=soundvision_send_file_command(filename,dev);
if (ret<0) return ret;
ret = soundvision_read(dev, data, size);
if (ret<0) return ret;
/* Check num taken AGAIN */
taken=soundvision_photos_taken(dev);
ret=soundvision_send_command(SOUNDVISION_DELETE,0,dev);
if (ret<0) return ret;
/* read ff 0f ??? */
ret = soundvision_read(dev, data, size);
if (ret<0) return ret;
ret = soundvision_send_file_command(filename,dev);
if (ret<0) return ret;
/* This is the point we notices that in fact a pic is missing */
/* Why do it 4 times??? Timing?? Who knows */
taken=soundvision_photos_taken(dev);
taken=soundvision_photos_taken(dev);
taken=soundvision_photos_taken(dev);
taken=soundvision_photos_taken(dev);
buflen = (taken * 13)+1; /* 12 char filenames and space for each */
/* plus trailing NULL */
buffer = malloc(buflen);
if (!buffer) {
GP_DEBUG("Could not allocate %i bytes!",
buflen);
return (GP_ERROR_NO_MEMORY);
}
ret=soundvision_send_command(SOUNDVISION_GET_NAMES, buflen,dev);
if (ret < 0) {
free(buffer);
return ret;
}
ret = soundvision_read(dev, (void *)buffer, buflen);
if (ret < 0) {
free(buffer);
return ret;
}
if (dev->file_list) free(dev->file_list);
dev->file_list = buffer;
ret=soundvision_send_command(SOUNDVISION_GET_PIC_SIZE,0,dev);
if (ret<0) return ret;
/* always returns ff 0f 00 00 ??? */
ret = soundvision_read(dev, &temp, sizeof(temp));
if (ret<0) return ret;
ret=soundvision_send_file_command(filename,dev);
if (ret<0) return ret;
ret = soundvision_read(dev, data, size);
if (ret<0) return ret;
return GP_OK;
}
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