| 1 | /* |
| 2 | * Copyright (c) 2013 Stefano Sabatini |
| 3 | * |
| 4 | * This file is part of FFmpeg. |
| 5 | * |
| 6 | * FFmpeg is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Lesser General Public |
| 8 | * License as published by the Free Software Foundation; either |
| 9 | * version 2.1 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * FFmpeg is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * Lesser General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU Lesser General Public |
| 17 | * License along with FFmpeg; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 19 | */ |
| 20 | |
| 21 | #include "config.h" |
| 22 | |
| 23 | #include <zmq.h> |
| 24 | |
| 25 | #include "libavutil/mem.h" |
| 26 | #include "libavutil/bprint.h" |
| 27 | |
| 28 | #if HAVE_UNISTD_H |
| 29 | #include <unistd.h> /* getopt */ |
| 30 | #endif |
| 31 | |
| 32 | #if !HAVE_GETOPT |
| 33 | #include "compat/getopt.c" |
| 34 | #endif |
| 35 | |
| 36 | /** |
| 37 | * @file |
| 38 | * zmq message sender example, meant to be used with the zmq filters |
| 39 | */ |
| 40 | |
| 41 | static void usage(void) |
| 42 | { |
| 43 | printf("send message to ZMQ recipient, to use with the zmq filters\n"); |
| 44 | printf("usage: zmqsend [OPTIONS]\n"); |
| 45 | printf("\n" |
| 46 | "Options:\n" |
| 47 | "-b ADDRESS set bind address\n" |
| 48 | "-h print this help\n" |
| 49 | "-i INFILE set INFILE as input file, stdin if omitted\n"); |
| 50 | } |
| 51 | |
| 52 | int main(int argc, char **argv) |
| 53 | { |
| 54 | AVBPrint src; |
| 55 | char c, *src_buf, *recv_buf; |
| 56 | int recv_buf_size, ret; |
| 57 | void *zmq_ctx, *socket; |
| 58 | const char *bind_address = "tcp://localhost:5555"; |
| 59 | const char *infilename = NULL; |
| 60 | FILE *infile = NULL; |
| 61 | zmq_msg_t msg; |
| 62 | |
| 63 | while ((c = getopt(argc, argv, "b:hi:")) != -1) { |
| 64 | switch (c) { |
| 65 | case 'b': |
| 66 | bind_address = optarg; |
| 67 | break; |
| 68 | case 'h': |
| 69 | usage(); |
| 70 | return 0; |
| 71 | case 'i': |
| 72 | infilename = optarg; |
| 73 | break; |
| 74 | case '?': |
| 75 | return 1; |
| 76 | } |
| 77 | } |
| 78 | |
| 79 | if (!infilename || !strcmp(infilename, "-")) { |
| 80 | infilename = "stdin"; |
| 81 | infile = stdin; |
| 82 | } else { |
| 83 | infile = fopen(infilename, "r"); |
| 84 | } |
| 85 | if (!infile) { |
| 86 | av_log(NULL, AV_LOG_ERROR, |
| 87 | "Impossible to open input file '%s': %s\n", infilename, strerror(errno)); |
| 88 | return 1; |
| 89 | } |
| 90 | |
| 91 | zmq_ctx = zmq_ctx_new(); |
| 92 | if (!zmq_ctx) { |
| 93 | av_log(NULL, AV_LOG_ERROR, |
| 94 | "Could not create ZMQ context: %s\n", zmq_strerror(errno)); |
| 95 | return 1; |
| 96 | } |
| 97 | |
| 98 | socket = zmq_socket(zmq_ctx, ZMQ_REQ); |
| 99 | if (!socket) { |
| 100 | av_log(NULL, AV_LOG_ERROR, |
| 101 | "Could not create ZMQ socket: %s\n", zmq_strerror(errno)); |
| 102 | ret = 1; |
| 103 | goto end; |
| 104 | } |
| 105 | |
| 106 | if (zmq_connect(socket, bind_address) == -1) { |
| 107 | av_log(NULL, AV_LOG_ERROR, "Could not bind ZMQ responder to address '%s': %s\n", |
| 108 | bind_address, zmq_strerror(errno)); |
| 109 | ret = 1; |
| 110 | goto end; |
| 111 | } |
| 112 | |
| 113 | /* grab the input and store it in src */ |
| 114 | av_bprint_init(&src, 1, AV_BPRINT_SIZE_UNLIMITED); |
| 115 | while ((c = fgetc(infile)) != EOF) |
| 116 | av_bprint_chars(&src, c, 1); |
| 117 | av_bprint_chars(&src, 0, 1); |
| 118 | |
| 119 | if (!av_bprint_is_complete(&src)) { |
| 120 | av_log(NULL, AV_LOG_ERROR, "Could not allocate a buffer for the source string\n"); |
| 121 | av_bprint_finalize(&src, NULL); |
| 122 | ret = 1; |
| 123 | goto end; |
| 124 | } |
| 125 | av_bprint_finalize(&src, &src_buf); |
| 126 | |
| 127 | if (zmq_send(socket, src_buf, strlen(src_buf), 0) == -1) { |
| 128 | av_log(NULL, AV_LOG_ERROR, "Could not send message: %s\n", zmq_strerror(errno)); |
| 129 | ret = 1; |
| 130 | goto end; |
| 131 | } |
| 132 | |
| 133 | if (zmq_msg_init(&msg) == -1) { |
| 134 | av_log(NULL, AV_LOG_ERROR, |
| 135 | "Could not initialize receiving message: %s\n", zmq_strerror(errno)); |
| 136 | ret = 1; |
| 137 | goto end; |
| 138 | } |
| 139 | |
| 140 | if (zmq_msg_recv(&msg, socket, 0) == -1) { |
| 141 | av_log(NULL, AV_LOG_ERROR, |
| 142 | "Could not receive message: %s\n", zmq_strerror(errno)); |
| 143 | zmq_msg_close(&msg); |
| 144 | ret = 1; |
| 145 | goto end; |
| 146 | } |
| 147 | |
| 148 | recv_buf_size = zmq_msg_size(&msg) + 1; |
| 149 | recv_buf = av_malloc(recv_buf_size); |
| 150 | if (!recv_buf) { |
| 151 | av_log(NULL, AV_LOG_ERROR, |
| 152 | "Could not allocate receiving message buffer\n"); |
| 153 | zmq_msg_close(&msg); |
| 154 | ret = 1; |
| 155 | goto end; |
| 156 | } |
| 157 | memcpy(recv_buf, zmq_msg_data(&msg), recv_buf_size); |
| 158 | recv_buf[recv_buf_size-1] = 0; |
| 159 | printf("%s\n", recv_buf); |
| 160 | zmq_msg_close(&msg); |
| 161 | av_free(recv_buf); |
| 162 | |
| 163 | end: |
| 164 | zmq_close(socket); |
| 165 | zmq_ctx_destroy(zmq_ctx); |
| 166 | return ret; |
| 167 | } |