libavformat/protocols.c

   1 /*
   2  * This file is part of FFmpeg.
   3  *
   4  * FFmpeg is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * FFmpeg is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with FFmpeg; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  17  */
  18
  19 #include <string.h>
  20
  21 #include "libavutil/avstring.h"
  22 #include "libavutil/log.h"
  23 #include "libavutil/mem.h"
  24
  25 #include "url.h"
  26
  27 extern const URLProtocol ff_android_content_protocol;
  28 extern const URLProtocol ff_async_protocol;
  29 extern const URLProtocol ff_bluray_protocol;
  30 extern const URLProtocol ff_cache_protocol;
  31 extern const URLProtocol ff_concat_protocol;
  32 extern const URLProtocol ff_concatf_protocol;
  33 extern const URLProtocol ff_crypto_protocol;
  34 extern const URLProtocol ff_data_protocol;
  35 extern const URLProtocol ff_fd_protocol;
  36 extern const URLProtocol ff_ffrtmpcrypt_protocol;
  37 extern const URLProtocol ff_ffrtmphttp_protocol;
  38 extern const URLProtocol ff_file_protocol;
  39 extern const URLProtocol ff_ftp_protocol;
  40 extern const URLProtocol ff_gopher_protocol;
  41 extern const URLProtocol ff_gophers_protocol;
  42 extern const URLProtocol ff_hls_protocol;
  43 extern const URLProtocol ff_http_protocol;
  44 extern const URLProtocol ff_httpproxy_protocol;
  45 extern const URLProtocol ff_https_protocol;
  46 extern const URLProtocol ff_icecast_protocol;
  47 extern const URLProtocol ff_mmsh_protocol;
  48 extern const URLProtocol ff_mmst_protocol;
  49 extern const URLProtocol ff_md5_protocol;
  50 extern const URLProtocol ff_pipe_protocol;
  51 extern const URLProtocol ff_prompeg_protocol;
  52 extern const URLProtocol ff_rtmp_protocol;
  53 extern const URLProtocol ff_rtmpe_protocol;
  54 extern const URLProtocol ff_rtmps_protocol;
  55 extern const URLProtocol ff_rtmpt_protocol;
  56 extern const URLProtocol ff_rtmpte_protocol;
  57 extern const URLProtocol ff_rtmpts_protocol;
  58 extern const URLProtocol ff_rtp_protocol;
  59 extern const URLProtocol ff_sctp_protocol;
  60 extern const URLProtocol ff_srtp_protocol;
  61 extern const URLProtocol ff_subfile_protocol;
  62 extern const URLProtocol ff_tee_protocol;
  63 extern const URLProtocol ff_tcp_protocol;
  64 extern const URLProtocol ff_tls_protocol;
  65 extern const URLProtocol ff_dtls_protocol;
  66 extern const URLProtocol ff_udp_protocol;
  67 extern const URLProtocol ff_udplite_protocol;
  68 extern const URLProtocol ff_unix_protocol;
  69 extern const URLProtocol ff_libamqp_protocol;
  70 extern const URLProtocol ff_librist_protocol;
  71 extern const URLProtocol ff_librtmp_protocol;
  72 extern const URLProtocol ff_librtmpe_protocol;
  73 extern const URLProtocol ff_librtmps_protocol;
  74 extern const URLProtocol ff_librtmpt_protocol;
  75 extern const URLProtocol ff_librtmpte_protocol;
  76 extern const URLProtocol ff_libsrt_protocol;
  77 extern const URLProtocol ff_libssh_protocol;
  78 extern const URLProtocol ff_libsmbclient_protocol;
  79 extern const URLProtocol ff_libzmq_protocol;
  80 extern const URLProtocol ff_ipfs_gateway_protocol;
  81 extern const URLProtocol ff_ipns_gateway_protocol;
  82
  83 #include "libavformat/protocol_list.c"
  84
  85 const AVClass *ff_urlcontext_child_class_iterate(void **iter)
  86 {
  87     const AVClass *ret = NULL;
  88     uintptr_t i;
  89
  90     for (i = (uintptr_t)*iter; url_protocols[i]; i++) {
  91         ret = url_protocols[i]->priv_data_class;
  92         if (ret)
  93             break;
  94     }
  95
  96     *iter = (void*)(uintptr_t)(url_protocols[i] ? i + 1 : i);
  97     return ret;
  98 }
  99
 100 const char *avio_enum_protocols(void **opaque, int output)
 101 {
 102     uintptr_t i;
 103
 104     for (i = (uintptr_t)*opaque; url_protocols[i]; i++) {
 105         const URLProtocol *p = url_protocols[i];
 106         if ((output && p->url_write) || (!output && p->url_read)) {
 107             *opaque = (void*)(uintptr_t)(i + 1);
 108             return p->name;
 109         }
 110     }
 111     *opaque = NULL;
 112     return NULL;
 113 }
 114
 115 const AVClass *avio_protocol_get_class(const char *name)
 116 {
 117     int i = 0;
 118     for (i = 0; url_protocols[i]; i++) {
 119         if (!strcmp(url_protocols[i]->name, name))
 120             return url_protocols[i]->priv_data_class;
 121     }
 122     return NULL;
 123 }
 124
 125 const URLProtocol **ffurl_get_protocols(const char *whitelist,
 126                                         const char *blacklist)
 127 {
 128     const URLProtocol **ret;
 129     int i, ret_idx = 0;
 130
 131     ret = av_calloc(FF_ARRAY_ELEMS(url_protocols), sizeof(*ret));
 132     if (!ret)
 133         return NULL;
 134
 135     for (i = 0; url_protocols[i]; i++) {
 136         const URLProtocol *up = url_protocols[i];
 137
 138         if (whitelist && *whitelist && !av_match_name(up->name, whitelist))
 139             continue;
 140         if (blacklist && *blacklist && av_match_name(up->name, blacklist))
 141             continue;
 142
 143         ret[ret_idx++] = up;
 144     }
 145
 146     return ret;
 147 }