mirror of https://github.com/FFmpeg/FFmpeg.git
Icecast is basically a convenience wrapper around the HTTP protocol. Signed-off-by: Martin Storsjö <martin@martin.st>pull/80/head
Marvin Scholz
11 years ago
committed by
Martin Storsjö
parent
bb41115d56
commit
eb9244f202
8 changed files with 274 additions and 1 deletions
@ -0,0 +1,228 @@ |
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/*
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* Icecast protocol for Libav |
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* Copyright (c) 2014 Marvin Scholz |
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* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "libavutil/avstring.h" |
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#include "libavutil/opt.h" |
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#include "avformat.h" |
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#include "network.h" |
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typedef struct IcecastContext { |
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const AVClass *class; |
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URLContext *hd; |
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int send_started; |
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char *user; |
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// Options
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char *content_type; |
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char *description; |
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char *genre; |
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int legacy_icecast; |
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char *name; |
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char *pass; |
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int public; |
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char *url; |
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char *user_agent; |
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} IcecastContext; |
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#define DEFAULT_ICE_USER "source" |
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#define NOT_EMPTY(s) (s && s[0]) |
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#define OFFSET(x) offsetof(IcecastContext, x) |
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#define E AV_OPT_FLAG_ENCODING_PARAM |
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static const AVOption options[] = { |
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{ "ice_genre", "set stream genre", OFFSET(genre), AV_OPT_TYPE_STRING, { 0 }, 0, 0, E }, |
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{ "ice_name", "set stream description", OFFSET(name), AV_OPT_TYPE_STRING, { 0 }, 0, 0, E }, |
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{ "ice_description", "set stream description", OFFSET(description), AV_OPT_TYPE_STRING, { 0 }, 0, 0, E }, |
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{ "ice_url", "set stream website", OFFSET(url), AV_OPT_TYPE_STRING, { 0 }, 0, 0, E }, |
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{ "ice_public", "set if stream is public", OFFSET(public), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, E }, |
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{ "user_agent", "override User-Agent header", OFFSET(user_agent), AV_OPT_TYPE_STRING, { 0 }, 0, 0, E }, |
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{ "password", "set password", OFFSET(pass), AV_OPT_TYPE_STRING, { 0 }, 0, 0, E }, |
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{ "content_type", "set content-type, MUST be set if not audio/mpeg", OFFSET(content_type), AV_OPT_TYPE_STRING, { 0 }, 0, 0, E }, |
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{ "legacy_icecast", "use legacy SOURCE method, for Icecast < v2.4", OFFSET(legacy_icecast), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, E }, |
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{ NULL } |
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}; |
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static char *cat_header(char buf[], const char key[], const char value[]) |
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{ |
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if (NOT_EMPTY(value)) { |
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int len = strlen(key) + strlen(value) + 5; |
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int is_first = !buf; |
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char *tmp = NULL; |
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if (buf) |
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len += strlen(buf); |
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if (!(tmp = av_realloc(buf, len))) { |
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av_freep(&buf); |
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return NULL; |
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} else { |
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buf = tmp; |
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} |
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if (is_first) |
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*buf = '\0'; |
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av_strlcatf(buf, len, "%s: %s\r\n", key, value); |
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} |
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return buf; |
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} |
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static int icecast_close(URLContext *h) |
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{ |
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IcecastContext *s = h->priv_data; |
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if (s->hd) |
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ffurl_close(s->hd); |
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return 0; |
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} |
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static int icecast_open(URLContext *h, const char *uri, int flags) |
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{ |
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IcecastContext *s = h->priv_data; |
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// Dict to set options that we pass to the HTTP protocol
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AVDictionary *opt_dict = NULL; |
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// URI part variables
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char h_url[1024], host[1024], auth[1024], path[1024]; |
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char *headers = NULL, *user = NULL; |
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int port, ret; |
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if (flags & AVIO_FLAG_READ) |
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return AVERROR(ENOSYS); |
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// Build header strings
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headers = cat_header(headers, "Ice-Name", s->name); |
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headers = cat_header(headers, "Ice-Description", s->description); |
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headers = cat_header(headers, "Ice-URL", s->url); |
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headers = cat_header(headers, "Ice-Genre", s->genre); |
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headers = cat_header(headers, "Ice-Public", s->public ? "1" : "0"); |
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if (!headers) { |
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ret = AVERROR(ENOMEM); |
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goto cleanup; |
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} |
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// Set options
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av_dict_set(&opt_dict, "method", s->legacy_icecast ? "SOURCE" : "PUT", 0); |
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av_dict_set(&opt_dict, "auth_type", "basic", 0); |
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av_dict_set(&opt_dict, "headers", headers, 0); |
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if (NOT_EMPTY(s->content_type)) |
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av_dict_set(&opt_dict, "content_type", s->content_type, 0); |
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if (NOT_EMPTY(s->user_agent)) |
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av_dict_set(&opt_dict, "user_agent", s->user_agent, 0); |
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// Parse URI
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av_url_split(NULL, 0, auth, sizeof(auth), host, sizeof(host), |
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&port, path, sizeof(path), uri); |
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// Check for auth data in URI
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if (auth[0]) { |
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char *sep = strchr(auth,':'); |
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if (sep) { |
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*sep = 0; |
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sep++; |
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if (s->pass) { |
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av_free(s->pass); |
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av_log(h, AV_LOG_WARNING, "Overwriting -password <pass> with URI password!\n"); |
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} |
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if (!(s->pass = av_strdup(sep))) { |
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ret = AVERROR(ENOMEM); |
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goto cleanup; |
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} |
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} |
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if (!(user = av_strdup(auth))) { |
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ret = AVERROR(ENOMEM); |
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goto cleanup; |
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} |
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} |
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// Build new authstring
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snprintf(auth, sizeof(auth), |
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"%s:%s", |
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user ? user : DEFAULT_ICE_USER, |
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s->pass ? s->pass : ""); |
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// Check for mountpoint (path)
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if (!path[0] || strcmp(path, "/") == 0) { |
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av_log(h, AV_LOG_ERROR, "No mountpoint (path) specified!\n"); |
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ret = AVERROR(EIO); |
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goto cleanup; |
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} |
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// Build new URI for passing to http protocol
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ff_url_join(h_url, sizeof(h_url), "http", auth, host, port, "%s", path); |
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// Finally open http proto handler
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ret = ffurl_open(&s->hd, h_url, AVIO_FLAG_READ_WRITE, NULL, &opt_dict); |
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cleanup: |
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// Free variables
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av_freep(&user); |
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av_freep(&headers); |
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av_dict_free(&opt_dict); |
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return ret; |
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} |
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static int icecast_write(URLContext *h, const uint8_t *buf, int size) |
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{ |
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IcecastContext *s = h->priv_data; |
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if (!s->send_started) { |
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s->send_started = 1; |
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if (!s->content_type && size >= 8) { |
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static const uint8_t oggs[4] = { 0x4F, 0x67, 0x67, 0x53 }; |
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static const uint8_t webm[4] = { 0x1A, 0x45, 0xDF, 0xA3 }; |
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static const uint8_t opus[8] = { 0x4F, 0x70, 0x75, 0x73, 0x48, 0x65, 0x61, 0x64 }; |
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if (memcmp(buf, oggs, sizeof(oggs)) == 0) { |
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av_log(h, AV_LOG_WARNING, "Streaming Ogg but appropriate content type NOT set!\n"); |
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av_log(h, AV_LOG_WARNING, "Set it with -content_type application/ogg\n"); |
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} else if (memcmp(buf, opus, sizeof(opus)) == 0) { |
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av_log(h, AV_LOG_WARNING, "Streaming Opus but appropriate content type NOT set!\n"); |
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av_log(h, AV_LOG_WARNING, "Set it with -content_type audio/ogg\n"); |
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} else if (memcmp(buf, webm, sizeof(webm)) == 0) { |
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av_log(h, AV_LOG_WARNING, "Streaming WebM but appropriate content type NOT set!\n"); |
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av_log(h, AV_LOG_WARNING, "Set it with -content_type video/webm\n"); |
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} else { |
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av_log(h, AV_LOG_WARNING, "It seems you are streaming an unsupported format.\n"); |
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av_log(h, AV_LOG_WARNING, "It might work, but is not officially supported in Icecast!\n"); |
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} |
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} |
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} |
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return ffurl_write(s->hd, buf, size); |
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} |
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static const AVClass icecast_context_class = { |
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.class_name = "icecast", |
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.item_name = av_default_item_name, |
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.option = options, |
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.version = LIBAVUTIL_VERSION_INT, |
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}; |
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URLProtocol ff_icecast_protocol = { |
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.name = "icecast", |
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.url_open = icecast_open, |
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.url_write = icecast_write, |
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.url_close = icecast_close, |
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.priv_data_size = sizeof(IcecastContext), |
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.priv_data_class = &icecast_context_class, |
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.flags = URL_PROTOCOL_FLAG_NETWORK, |
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}; |
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