Signed-off-by: Stephan Holljes <klaxa1...@googlemail.com>
---
doc/examples/Makefile | 1 +
doc/examples/http_multiclient.c | 101 ++++++++++++++++++++++++++++++++++++++++
2 files changed, 102 insertions(+)
create mode 100644 doc/examples/http_multiclient.c
diff --git a/doc/examples/Makefile b/doc/examples/Makefile
index 9699f11..8c9501b 100644
--- a/doc/examples/Makefile
+++ b/doc/examples/Makefile
@@ -18,6 +18,7 @@ EXAMPLES= avio_list_dir \
extract_mvs \
filtering_video \
filtering_audio \
+ http_multiclient \
metadata \
muxing \
remuxing \
diff --git a/doc/examples/http_multiclient.c b/doc/examples/http_multiclient.c
new file mode 100644
index 0000000..fdecab4
--- /dev/null
+++ b/doc/examples/http_multiclient.c
@@ -0,0 +1,101 @@
+/*
+ * copyright (c) 2015 Stephan Holljes
+ *
+ * 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
+ */
+
+/**
+ * @file
+ * libavformat multi-client network API usage example.
+ *
+ * @example http_multiclient.c
+ * This example will serve a file without decoding or demuxing it over http.
+ * Multiple clients can connect and will receive the same file.
+ */
+
+#include <libavformat/avformat.h>
+#include <unistd.h>
+
+int main(int argc, char **argv)
+{
+ AVDictionary *options = NULL;
+ AVIOContext *input = NULL, *client = NULL, *server = NULL;
+ const char *in_uri, *out_uri;
+ int ret, pid, n;
+ uint8_t buf[1024];
+
+ if (argc < 3) {
+ printf("usage: %s input http://hostname[:port]\n";
+ "API example program to serve http to multiple clients.\n"
+ "The output format is guessed according to the input file
extension.\n"
+ "\n", argv[0]);
+ return 1;
+ }
+
+ in_uri = argv[1];
+ out_uri = argv[2];
+
+ av_register_all();
+ avformat_network_init();
+
+ if ((ret = av_dict_set(&options, "listen", "2", 0)) < 0)
+ goto end;
+ if ((ret = avio_open2(&server, out_uri, AVIO_FLAG_READ_WRITE, NULL,
&options)) < 0)
+ goto end;
+ fprintf(stderr, "Entering main loop.\n");
+ for(;;) {
+ if ((ret = avio_accept(server, &client)) < 0)
+ goto end;
+ fprintf(stderr, "Accepted client, forking process.\n");
+ pid = fork();
+ if (pid == 0) {
+ fprintf(stderr, "Opening input file.\n");
+ if ((ret = avio_open2(&input, in_uri, AVIO_FLAG_READ, NULL, NULL))
< 0)
+ goto end;
+ fprintf(stderr, "In child.\n");
+ avio_handshake(client);
+ fprintf(stderr, "Handshake performed.\n");
+ for(;;) {
+ n = avio_read(input, buf, sizeof(buf));
+ fprintf(stderr, "Read %d bytes from input.\n", n);
+ if (n <= 0) {
+ fprintf(stderr, "n is negative, abort.\n");
+ break;
+ }
+ fprintf(stderr, "Writing %d bytes of data.\n", n);
+ avio_write(client, buf, n);
+ avio_flush(client);
+ }
+ fprintf(stderr, "Flushing client\n");
+ avio_flush(client);
+ fprintf(stderr, "Closing client\n");
+ avio_close(client);
+ break;
+ }
+ }
+
+end:
+ if (ret)
+ fprintf(stderr, "Some errors occured.\n");
+ if (server)
+ avio_close(server);
+ if (input)
+ avio_close(input);
+ if (ret < 0 && ret != AVERROR_EOF)
+ return 1;
+ return 0;
+}
--
2.1.0
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