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/*
* libiec61883 - Linux IEEE 1394 streaming media library.
* Copyright (C) 2004 Dan Dennedy
*
* 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 2.1 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "../src/iec61883.h"
#include <stdio.h>
#include <sys/poll.h>
#include <signal.h>
#include <string.h>
#include <stdlib.h>
static int g_done = 0;
static int write_frame (unsigned char *data, int len, int complete, void *callback_data)
{
FILE *f = (FILE*) callback_data;
if (complete == 0)
fprintf (stderr, "Error: incomplete frame received!\n");
return (fwrite (data, len, 1, f) < 1) ? -1 : 0;
}
static int read_frame (unsigned char *data, int n, unsigned int dropped, void *callback_data)
{
FILE *f = (FILE*) callback_data;
if (n == 1)
if (fread (data, 480, 1, f) < 1)
return -1;
else
return 0;
else
return 0;
}
static void sighandler (int sig)
{
g_done = 1;
}
static void dv_receive( raw1394handle_t handle, FILE *f, int channel)
{
iec61883_dv_fb_t frame = iec61883_dv_fb_init (handle, write_frame, (void *)f );
if (frame && iec61883_dv_fb_start (frame, channel) == 0)
{
struct pollfd pfd = {
fd: raw1394_get_fd (handle),
events: POLLIN | POLLPRI,
revents: 0
};
int result = 0;
signal (SIGINT, sighandler);
signal (SIGPIPE, sighandler);
fprintf (stderr, "Starting to receive\n");
do {
if (poll (&pfd, 1, 100) > 0 && (pfd.revents & POLLIN))
result = raw1394_loop_iterate (handle);
} while (g_done == 0 && result == 0);
fprintf (stderr, "done.\n");
}
iec61883_dv_fb_close (frame);
}
static void dv_transmit( raw1394handle_t handle, FILE *f, int channel)
{
iec61883_dv_t dv;
unsigned char data[480];
int ispal;
fread (data, 480, 1, f);
ispal = (data[ 3 ] & 0x80) != 0;
dv = iec61883_dv_xmit_init (handle, ispal, read_frame, (void *)f );
if (dv && iec61883_dv_xmit_start (dv, channel) == 0)
{
struct pollfd pfd = {
fd: raw1394_get_fd (handle),
events: POLLIN,
revents: 0
};
int result = 0;
signal (SIGINT, sighandler);
signal (SIGPIPE, sighandler);
fprintf (stderr, "Starting to transmit %s\n", ispal ? "PAL" : "NTSC");
do {
int r = 0;
if ((r = poll (&pfd, 1, 100)) > 0 && (pfd.revents & POLLIN))
result = raw1394_loop_iterate (handle);
} while (g_done == 0 && result == 0);
fprintf (stderr, "done.\n");
}
iec61883_dv_close (dv);
}
int main (int argc, char *argv[])
{
raw1394handle_t handle = raw1394_new_handle_on_port (0);
nodeid_t node = 0xffc0;
FILE *f = NULL;
int is_transmit = 0;
int node_specified = 0;
int i;
int channel;
int bandwidth = -1;
for (i = 1; i < argc; i++) {
if (strncmp (argv[i], "-h", 2) == 0 ||
strncmp (argv[i], "--h", 3) == 0)
{
fprintf (stderr,
"usage: %s [[-r | -t] node-id] [- | file]\n"
" Use - to transmit raw DV from stdin, or\n"
" supply a filename to to transmit from a raw DV file.\n"
" Otherwise, capture raw DV to stdout.\n", argv[0]);
raw1394_destroy_handle (handle);
return 1;
} else if (strncmp (argv[i], "-t", 2) == 0) {
node |= atoi (argv[++i]);
is_transmit = 1;
node_specified = 1;
} else if (strncmp (argv[i], "-r", 2) == 0) {
node |= atoi (argv[++i]);
is_transmit = 0;
node_specified = 1;
} else if (strcmp (argv[i], "-") != 0) {
if (node_specified && !is_transmit)
f = fopen (argv[i], "wb");
else {
f = fopen (argv[i], "rb");
is_transmit = 1;
}
} else if (!node_specified) {
is_transmit = 1;
}
}
if (handle) {
int oplug = -1, iplug = -1;
if (is_transmit) {
if (f == NULL)
f = stdin;
if (node_specified) {
channel = iec61883_cmp_connect (handle,
raw1394_get_local_id (handle), &oplug, node, &iplug,
&bandwidth);
if (channel > -1) {
fprintf (stderr, "Connect succeeded, transmitting on channel %d.\n", channel);
dv_transmit (handle, f, channel);
iec61883_cmp_disconnect (handle,
raw1394_get_local_id (handle), oplug, node, iplug,
channel, bandwidth);
} else {
fprintf (stderr, "Connect failed, reverting to broadcast channel 63.\n");
dv_transmit (handle, f, 63);
}
} else {
dv_transmit (handle, f, 63);
}
if (f != stdin)
fclose (f);
} else {
if (f == NULL)
f = stdout;
if (node_specified) {
channel = iec61883_cmp_connect (handle, node, &oplug,
raw1394_get_local_id (handle), &iplug, &bandwidth);
if (channel > -1) {
dv_receive (handle, f, channel);
iec61883_cmp_disconnect (handle, node, oplug,
raw1394_get_local_id (handle), iplug,
channel, bandwidth);
} else {
fprintf (stderr, "Connect failed, reverting to broadcast channel 63.\n");
dv_receive (handle, f, 63);
}
} else {
dv_receive (handle, f, 63);
}
if (f != stdout)
fclose (f);
}
raw1394_destroy_handle (handle);
} else {
fprintf (stderr, "Failed to get libraw1394 handle\n");
return -1;
}
return 0;
}
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