| /* |
| * Icecast protocol for FFmpeg |
| * Copyright (c) 2014 Marvin Scholz |
| * |
| * 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 "libavutil/avstring.h" |
| #include "libavutil/bprint.h" |
| #include "libavutil/opt.h" |
| |
| #include "avformat.h" |
| #include "network.h" |
| |
| |
| typedef struct IcecastContext { |
| const AVClass *class; |
| URLContext *hd; |
| int send_started; |
| char *user; |
| // Options |
| char *content_type; |
| char *description; |
| char *genre; |
| int legacy_icecast; |
| char *name; |
| char *pass; |
| int public; |
| char *url; |
| char *user_agent; |
| int tls; |
| } IcecastContext; |
| |
| #define DEFAULT_ICE_USER "source" |
| |
| #define NOT_EMPTY(s) (s && s[0]) |
| |
| #define OFFSET(x) offsetof(IcecastContext, x) |
| #define E AV_OPT_FLAG_ENCODING_PARAM |
| |
| static const AVOption options[] = { |
| { "ice_genre", "set stream genre", OFFSET(genre), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E }, |
| { "ice_name", "set stream description", OFFSET(name), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E }, |
| { "ice_description", "set stream description", OFFSET(description), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E }, |
| { "ice_url", "set stream website", OFFSET(url), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E }, |
| { "ice_public", "set if stream is public", OFFSET(public), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E }, |
| { "user_agent", "override User-Agent header", OFFSET(user_agent), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E }, |
| { "password", "set password", OFFSET(pass), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E }, |
| { "content_type", "set content-type, MUST be set if not audio/mpeg", OFFSET(content_type), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E }, |
| { "legacy_icecast", "use legacy SOURCE method, for Icecast < v2.4", OFFSET(legacy_icecast), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E }, |
| { "tls", "use a TLS connection", OFFSET(tls), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E }, |
| { NULL } |
| }; |
| |
| |
| static void cat_header(AVBPrint *bp, const char key[], const char value[]) |
| { |
| if (NOT_EMPTY(value)) |
| av_bprintf(bp, "%s: %s\r\n", key, value); |
| } |
| |
| static int icecast_close(URLContext *h) |
| { |
| IcecastContext *s = h->priv_data; |
| ffurl_closep(&s->hd); |
| return 0; |
| } |
| |
| static int icecast_open(URLContext *h, const char *uri, int flags) |
| { |
| IcecastContext *s = h->priv_data; |
| |
| // Dict to set options that we pass to the HTTP protocol |
| AVDictionary *opt_dict = NULL; |
| |
| // URI part variables |
| char h_url[1024], host[1024], auth[1024], path[1024]; |
| char *headers, *user = NULL; |
| int port, ret; |
| AVBPrint bp; |
| |
| if (flags & AVIO_FLAG_READ) |
| return AVERROR(ENOSYS); |
| |
| av_bprint_init(&bp, 0, AV_BPRINT_SIZE_AUTOMATIC); |
| |
| // Build header strings |
| cat_header(&bp, "Ice-Name", s->name); |
| cat_header(&bp, "Ice-Description", s->description); |
| cat_header(&bp, "Ice-URL", s->url); |
| cat_header(&bp, "Ice-Genre", s->genre); |
| cat_header(&bp, "Ice-Public", s->public ? "1" : "0"); |
| if (!av_bprint_is_complete(&bp)) { |
| av_bprint_finalize(&bp, NULL); |
| return AVERROR(ENOMEM); |
| } |
| if ((ret = av_bprint_finalize(&bp, &headers)) < 0) |
| return ret; |
| |
| // Set options |
| av_dict_set(&opt_dict, "method", s->legacy_icecast ? "SOURCE" : "PUT", 0); |
| av_dict_set(&opt_dict, "auth_type", "basic", 0); |
| av_dict_set(&opt_dict, "headers", headers, AV_DICT_DONT_STRDUP_VAL); |
| av_dict_set(&opt_dict, "chunked_post", "0", 0); |
| av_dict_set(&opt_dict, "send_expect_100", s->legacy_icecast ? "-1" : "1", 0); |
| if (NOT_EMPTY(s->content_type)) |
| av_dict_set(&opt_dict, "content_type", s->content_type, 0); |
| else |
| av_dict_set(&opt_dict, "content_type", "audio/mpeg", 0); |
| if (NOT_EMPTY(s->user_agent)) |
| av_dict_set(&opt_dict, "user_agent", s->user_agent, 0); |
| |
| // Parse URI |
| av_url_split(NULL, 0, auth, sizeof(auth), host, sizeof(host), |
| &port, path, sizeof(path), uri); |
| |
| // Check for auth data in URI |
| if (auth[0]) { |
| char *sep = strchr(auth, ':'); |
| if (sep) { |
| *sep = 0; |
| sep++; |
| if (s->pass) { |
| av_free(s->pass); |
| av_log(h, AV_LOG_WARNING, "Overwriting -password <pass> with URI password!\n"); |
| } |
| if (!(s->pass = av_strdup(sep))) { |
| ret = AVERROR(ENOMEM); |
| goto cleanup; |
| } |
| } |
| if (!(user = av_strdup(auth))) { |
| ret = AVERROR(ENOMEM); |
| goto cleanup; |
| } |
| } |
| |
| // Build new authstring |
| snprintf(auth, sizeof(auth), |
| "%s:%s", |
| user ? user : DEFAULT_ICE_USER, |
| s->pass ? s->pass : ""); |
| |
| // Check for mountpoint (path) |
| if (!path[0] || strcmp(path, "/") == 0) { |
| av_log(h, AV_LOG_ERROR, "No mountpoint (path) specified!\n"); |
| ret = AVERROR(EIO); |
| goto cleanup; |
| } |
| |
| // Build new URI for passing to http protocol |
| ff_url_join(h_url, sizeof(h_url), |
| s->tls ? "https" : "http", |
| auth, host, port, "%s", path); |
| // Finally open http proto handler |
| ret = ffurl_open_whitelist(&s->hd, h_url, AVIO_FLAG_READ_WRITE, NULL, |
| &opt_dict, h->protocol_whitelist, h->protocol_blacklist, h); |
| |
| cleanup: |
| av_freep(&user); |
| av_dict_free(&opt_dict); |
| |
| return ret; |
| } |
| |
| static int icecast_write(URLContext *h, const uint8_t *buf, int size) |
| { |
| IcecastContext *s = h->priv_data; |
| if (!s->send_started) { |
| s->send_started = 1; |
| if (!s->content_type && size >= 8) { |
| static const uint8_t oggs[4] = { 0x4F, 0x67, 0x67, 0x53 }; |
| static const uint8_t webm[4] = { 0x1A, 0x45, 0xDF, 0xA3 }; |
| static const uint8_t opus[8] = { 0x4F, 0x70, 0x75, 0x73, 0x48, 0x65, 0x61, 0x64 }; |
| if (memcmp(buf, oggs, sizeof(oggs)) == 0) { |
| av_log(h, AV_LOG_WARNING, "Streaming Ogg but appropriate content type NOT set!\n"); |
| av_log(h, AV_LOG_WARNING, "Set it with -content_type application/ogg\n"); |
| } else if (memcmp(buf, opus, sizeof(opus)) == 0) { |
| av_log(h, AV_LOG_WARNING, "Streaming Opus but appropriate content type NOT set!\n"); |
| av_log(h, AV_LOG_WARNING, "Set it with -content_type audio/ogg\n"); |
| } else if (memcmp(buf, webm, sizeof(webm)) == 0) { |
| av_log(h, AV_LOG_WARNING, "Streaming WebM but appropriate content type NOT set!\n"); |
| av_log(h, AV_LOG_WARNING, "Set it with -content_type video/webm\n"); |
| } else { |
| av_log(h, AV_LOG_WARNING, "It seems you are streaming an unsupported format.\n"); |
| av_log(h, AV_LOG_WARNING, "It might work, but is not officially supported in Icecast!\n"); |
| } |
| } |
| } |
| return ffurl_write(s->hd, buf, size); |
| } |
| |
| static const AVClass icecast_context_class = { |
| .class_name = "icecast", |
| .item_name = av_default_item_name, |
| .option = options, |
| .version = LIBAVUTIL_VERSION_INT, |
| }; |
| |
| const URLProtocol ff_icecast_protocol = { |
| .name = "icecast", |
| .url_open = icecast_open, |
| .url_write = icecast_write, |
| .url_close = icecast_close, |
| .priv_data_size = sizeof(IcecastContext), |
| .priv_data_class = &icecast_context_class, |
| .flags = URL_PROTOCOL_FLAG_NETWORK, |
| }; |