mirror of https://github.com/FFmpeg/FFmpeg.git
Merge branch 'simple_http_server_api_implementation' of http://git.klaxa.eu/git/ffmpeg
Reviewed-by: Nicolas George <george@nsup.org> Merged-by: Michael Niedermayer <michael@niedermayer.cc>pull/161/head
Michael Niedermayer
10 years ago
commit
55ea31ab89
11 changed files with 476 additions and 35 deletions
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/*
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* Copyright (c) 2015 Stephan Holljes |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy |
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* of this software and associated documentation files (the "Software"), to deal |
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* in the Software without restriction, including without limitation the rights |
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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* copies of the Software, and to permit persons to whom the Software is |
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* furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in |
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* all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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* THE SOFTWARE. |
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*/ |
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/**
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* @file |
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* libavformat multi-client network API usage example. |
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* |
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* @example http_multiclient.c |
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* This example will serve a file without decoding or demuxing it over http. |
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* Multiple clients can connect and will receive the same file. |
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*/ |
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#include <libavformat/avformat.h> |
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#include <libavutil/opt.h> |
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#include <unistd.h> |
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void process_client(AVIOContext *client, const char *in_uri) |
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{ |
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AVIOContext *input = NULL; |
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uint8_t buf[1024]; |
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int ret, n, reply_code; |
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char *resource = NULL; |
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while ((ret = avio_handshake(client)) > 0) { |
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av_opt_get(client, "resource", AV_OPT_SEARCH_CHILDREN, &resource); |
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// check for strlen(resource) is necessary, because av_opt_get()
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// may return empty string.
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if (resource && strlen(resource)) |
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break; |
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} |
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if (ret < 0) |
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goto end; |
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av_log(client, AV_LOG_TRACE, "resource=%p\n", resource); |
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if (resource && resource[0] == '/' && !strcmp((resource + 1), in_uri)) { |
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reply_code = 200; |
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} else { |
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reply_code = AVERROR_HTTP_NOT_FOUND; |
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} |
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if ((ret = av_opt_set_int(client, "reply_code", reply_code, AV_OPT_SEARCH_CHILDREN)) < 0) { |
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av_log(client, AV_LOG_ERROR, "Failed to set reply_code: %s.\n", av_err2str(ret)); |
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goto end; |
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} |
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av_log(client, AV_LOG_TRACE, "Set reply code to %d\n", reply_code); |
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while ((ret = avio_handshake(client)) > 0); |
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if (ret < 0) |
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goto end; |
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fprintf(stderr, "Handshake performed.\n"); |
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if (reply_code != 200) |
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goto end; |
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fprintf(stderr, "Opening input file.\n"); |
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if ((ret = avio_open2(&input, in_uri, AVIO_FLAG_READ, NULL, NULL)) < 0) { |
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av_log(input, AV_LOG_ERROR, "Failed to open input: %s: %s.\n", in_uri, |
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av_err2str(ret)); |
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goto end; |
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} |
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for(;;) { |
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n = avio_read(input, buf, sizeof(buf)); |
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if (n < 0) { |
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if (n == AVERROR_EOF) |
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break; |
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av_log(input, AV_LOG_ERROR, "Error reading from input: %s.\n", |
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av_err2str(n)); |
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break; |
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} |
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avio_write(client, buf, n); |
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avio_flush(client); |
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} |
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end: |
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fprintf(stderr, "Flushing client\n"); |
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avio_flush(client); |
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fprintf(stderr, "Closing client\n"); |
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avio_close(client); |
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fprintf(stderr, "Closing input\n"); |
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avio_close(input); |
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} |
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int main(int argc, char **argv) |
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{ |
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av_log_set_level(AV_LOG_TRACE); |
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AVDictionary *options = NULL; |
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AVIOContext *client = NULL, *server = NULL; |
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const char *in_uri, *out_uri; |
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int ret, pid; |
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if (argc < 3) { |
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printf("usage: %s input http://hostname[:port]\n" |
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"API example program to serve http to multiple clients.\n" |
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"\n", argv[0]); |
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return 1; |
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} |
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in_uri = argv[1]; |
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out_uri = argv[2]; |
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av_register_all(); |
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avformat_network_init(); |
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if ((ret = av_dict_set(&options, "listen", "2", 0)) < 0) { |
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fprintf(stderr, "Failed to set listen mode for server: %s\n", av_err2str(ret)); |
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return ret; |
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} |
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if ((ret = avio_open2(&server, out_uri, AVIO_FLAG_WRITE, NULL, &options)) < 0) { |
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fprintf(stderr, "Failed to open server: %s\n", av_err2str(ret)); |
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return ret; |
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} |
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fprintf(stderr, "Entering main loop.\n"); |
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for(;;) { |
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if ((ret = avio_accept(server, &client)) < 0) |
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goto end; |
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fprintf(stderr, "Accepted client, forking process.\n"); |
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// XXX: Since we don't reap our children and don't ignore signals
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// this produces zombie processes.
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pid = fork(); |
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if (pid < 0) { |
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perror("Fork failed"); |
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ret = AVERROR(errno); |
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goto end; |
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} |
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if (pid == 0) { |
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fprintf(stderr, "In child.\n"); |
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process_client(client, in_uri); |
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avio_close(server); |
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exit(0); |
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} |
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if (pid > 0) |
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avio_close(client); |
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} |
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end: |
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avio_close(server); |
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if (ret < 0 && ret != AVERROR_EOF) { |
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fprintf(stderr, "Some errors occured: %s\n", av_err2str(ret)); |
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return 1; |
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} |
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return 0; |
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} |
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