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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* dv1394.cc
*
* Tue Apr 19 12:10:34 CEST 2005
* Copyright 2005 Bent Bisballe
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of MIaV.
*
* MIaV 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.
*
* MIaV 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 MIaV; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include "dv1394.h"
#include <stdlib.h>
#include <memory.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/poll.h>
#include "dv.h"
static int write_frame(unsigned char *data, int len, int complete,
void *callback_data)
{
class dv1394 *dv = (class dv1394*)callback_data;
if (complete == 0) {
fprintf (stderr, "Error: incomplete frame received!\n");
return 0;
}
//return (fwrite (data, len, 1, f) < 1) ? -1 : 0;
unsigned char *ptr = (unsigned char *)malloc(len);
memcpy(ptr, data, len);
dv->ptr = ptr;
return 1;
}
dv1394::dv1394(Info *i, int p, int c)
{
//printf("dv1394::dv1394()\n");
info = i;
port = p;
channel = c;
}
dv1394::~dv1394()
{
// printf("dv1394::~dv1394()\n");
iec61883_dv_fb_close (frame);
// Close firewire connection.
if(handle) raw1394_destroy_handle (handle);
}
bool dv1394::connect()
{
//printf("dv1394::connect()\n");
handle = raw1394_new_handle_on_port(port);
//printf(" handle: %p\n", handle);
if(!handle) return false;
frame = iec61883_dv_fb_init(handle, write_frame, this);
//printf(" frame: %p\n", frame);
if(frame && iec61883_dv_fb_start(frame, channel) == 0) {
// ok
//printf("frame ok\n");
} else {
// fail
//printf("frame fail\n");
return false;
}
return true;
}
unsigned char *dv1394::readFrame()
{
struct pollfd pfd;
pfd.fd = raw1394_get_fd(handle);
pfd.events = POLLIN | POLLPRI;
pfd.revents = 0;
ptr = NULL;
while(ptr == NULL) {
if(poll (&pfd, 1, 50) > 0 && (pfd.revents & POLLIN)) {
raw1394_loop_iterate(handle);
}
}
return ptr;
}
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