/* * 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 *zmq_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; } zmq_ctx = zmq_ctx_new(); if (!zmq_ctx) { av_log(NULL, AV_LOG_ERROR, "Could not create ZMQ context: %s\n", zmq_strerror(errno)); return 1; } socket = zmq_socket(zmq_ctx, ZMQ_REQ); if (!socket) { av_log(NULL, 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(NULL, 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(NULL, 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(NULL, 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(NULL, 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(zmq_ctx); return ret; }