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/*
* Copyright (c) 2013 Stefano Sabatini
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include <zmq.h>
#include "libavutil/mem.h"
#include "libavutil/bprint.h"
#if HAVE_UNISTD_H
#include <unistd.h> /* getopt */
#endif
#if !HAVE_GETOPT
#include "compat/getopt.c"
#endif
/**
* @file
* zmq message sender example, meant to be used with the zmq filters
*/
static void usage(void)
{
printf("send message to ZMQ recipient, to use with the zmq filters\n");
printf("usage: zmqsend [OPTIONS]\n");
printf("\n"
"Options:\n"
"-b ADDRESS set bind address\n"
"-h print this help\n"
"-i INFILE set INFILE as input file, stdin if omitted\n");
}
int main(int argc, char **argv)
{
AVBPrint src;
char c, *src_buf, *recv_buf;
int recv_buf_size, ret;
void *ctx, *socket;
const char *bind_address = "tcp://localhost:5555";
const char *infilename = NULL;
FILE *infile = NULL;
zmq_msg_t msg;
while ((c = getopt(argc, argv, "b:hi:")) != -1) {
switch (c) {
case 'b':
bind_address = optarg;
break;
case 'h':
usage();
return 0;
case 'i':
infilename = optarg;
break;
case '?':
return 1;
}
}
if (!infilename || !strcmp(infilename, "-")) {
infilename = "stdin";
infile = stdin;
} else {
infile = fopen(infilename, "r");
}
if (!infile) {
av_log(NULL, AV_LOG_ERROR,
"Impossible to open input file '%s': %s\n", infilename, strerror(errno));
return 1;
}
ctx = zmq_ctx_new();
if (!ctx) {
av_log(NULL, AV_LOG_ERROR,
"Could not create ZMQ context: %s\n", zmq_strerror(errno));
return 1;
}
socket = zmq_socket(ctx, ZMQ_REQ);
if (!socket) {
av_log(ctx, AV_LOG_ERROR,
"Could not create ZMQ socket: %s\n", zmq_strerror(errno));
ret = 1;
goto end;
}
if (zmq_connect(socket, bind_address) == -1) {
av_log(ctx, AV_LOG_ERROR, "Could not bind ZMQ responder to address '%s': %s\n",
bind_address, zmq_strerror(errno));
ret = 1;
goto end;
}
/* grab the input and store it in src */
av_bprint_init(&src, 1, AV_BPRINT_SIZE_UNLIMITED);
while ((c = fgetc(infile)) != EOF)
av_bprint_chars(&src, c, 1);
av_bprint_chars(&src, 0, 1);
if (!av_bprint_is_complete(&src)) {
av_log(NULL, AV_LOG_ERROR, "Could not allocate a buffer for the source string\n");
av_bprint_finalize(&src, NULL);
ret = 1;
goto end;
}
av_bprint_finalize(&src, &src_buf);
if (zmq_send(socket, src_buf, strlen(src_buf), 0) == -1) {
av_log(NULL, AV_LOG_ERROR, "Could not send message: %s\n", zmq_strerror(errno));
ret = 1;
goto end;
}
if (zmq_msg_init(&msg) == -1) {
av_log(ctx, AV_LOG_ERROR,
"Could not initialize receiving message: %s\n", zmq_strerror(errno));
ret = 1;
goto end;
}
if (zmq_msg_recv(&msg, socket, 0) == -1) {
av_log(ctx, AV_LOG_ERROR,
"Could not receive message: %s\n", zmq_strerror(errno));
zmq_msg_close(&msg);
ret = 1;
goto end;
}
recv_buf_size = zmq_msg_size(&msg) + 1;
recv_buf = av_malloc(recv_buf_size);
if (!recv_buf) {
av_log(ctx, AV_LOG_ERROR,
"Could not allocate receiving message buffer\n");
zmq_msg_close(&msg);
ret = 1;
goto end;
}
memcpy(recv_buf, zmq_msg_data(&msg), recv_buf_size);
recv_buf[recv_buf_size-1] = 0;
printf("%s\n", recv_buf);
zmq_msg_close(&msg);
av_free(recv_buf);
end:
zmq_close(socket);
zmq_ctx_destroy(ctx);
return ret;
}
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