diff options
Diffstat (limited to 'ffmpeg/libavformat/srtpproto.c')
| -rw-r--r-- | ffmpeg/libavformat/srtpproto.c | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/ffmpeg/libavformat/srtpproto.c b/ffmpeg/libavformat/srtpproto.c deleted file mode 100644 index f9d6b17..0000000 --- a/ffmpeg/libavformat/srtpproto.c +++ /dev/null @@ -1,145 +0,0 @@ -/* - * SRTP network protocol - * Copyright (c) 2012 Martin Storsjo - * - * 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/opt.h" -#include "avformat.h" -#include "avio_internal.h" -#include "url.h" - -#include "internal.h" -#include "rtpdec.h" -#include "srtp.h" - -typedef struct SRTPProtoContext { - const AVClass *class; - URLContext *rtp_hd; - const char *out_suite, *out_params; - const char *in_suite, *in_params; - struct SRTPContext srtp_out, srtp_in; - uint8_t encryptbuf[RTP_MAX_PACKET_LENGTH]; -} SRTPProtoContext; - -#define D AV_OPT_FLAG_DECODING_PARAM -#define E AV_OPT_FLAG_ENCODING_PARAM -static const AVOption options[] = { - { "srtp_out_suite", "", offsetof(SRTPProtoContext, out_suite), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E }, - { "srtp_out_params", "", offsetof(SRTPProtoContext, out_params), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E }, - { "srtp_in_suite", "", offsetof(SRTPProtoContext, in_suite), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E }, - { "srtp_in_params", "", offsetof(SRTPProtoContext, in_params), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E }, - { NULL } -}; - -static const AVClass srtp_context_class = { - .class_name = "srtp", - .item_name = av_default_item_name, - .option = options, - .version = LIBAVUTIL_VERSION_INT, -}; - -static int srtp_close(URLContext *h) -{ - SRTPProtoContext *s = h->priv_data; - ff_srtp_free(&s->srtp_out); - ff_srtp_free(&s->srtp_in); - ffurl_close(s->rtp_hd); - s->rtp_hd = NULL; - return 0; -} - -static int srtp_open(URLContext *h, const char *uri, int flags) -{ - SRTPProtoContext *s = h->priv_data; - char hostname[256], buf[1024], path[1024]; - int rtp_port, ret; - - if (s->out_suite && s->out_params) - if ((ret = ff_srtp_set_crypto(&s->srtp_out, s->out_suite, s->out_params)) < 0) - goto fail; - if (s->in_suite && s->in_params) - if ((ret = ff_srtp_set_crypto(&s->srtp_in, s->in_suite, s->in_params)) < 0) - goto fail; - - av_url_split(NULL, 0, NULL, 0, hostname, sizeof(hostname), &rtp_port, - path, sizeof(path), uri); - ff_url_join(buf, sizeof(buf), "rtp", NULL, hostname, rtp_port, "%s", path); - if ((ret = ffurl_open(&s->rtp_hd, buf, flags, &h->interrupt_callback, NULL)) < 0) - goto fail; - - h->max_packet_size = FFMIN(s->rtp_hd->max_packet_size, - sizeof(s->encryptbuf)) - 14; - h->is_streamed = 1; - return 0; - -fail: - srtp_close(h); - return ret; -} - -static int srtp_read(URLContext *h, uint8_t *buf, int size) -{ - SRTPProtoContext *s = h->priv_data; - int ret; -start: - ret = ffurl_read(s->rtp_hd, buf, size); - if (ret > 0 && s->srtp_in.aes) { - if (ff_srtp_decrypt(&s->srtp_in, buf, &ret) < 0) - goto start; - } - return ret; -} - -static int srtp_write(URLContext *h, const uint8_t *buf, int size) -{ - SRTPProtoContext *s = h->priv_data; - if (!s->srtp_out.aes) - return ffurl_write(s->rtp_hd, buf, size); - size = ff_srtp_encrypt(&s->srtp_out, buf, size, s->encryptbuf, - sizeof(s->encryptbuf)); - if (size < 0) - return size; - return ffurl_write(s->rtp_hd, s->encryptbuf, size); -} - -static int srtp_get_file_handle(URLContext *h) -{ - SRTPProtoContext *s = h->priv_data; - return ffurl_get_file_handle(s->rtp_hd); -} - -static int srtp_get_multi_file_handle(URLContext *h, int **handles, - int *numhandles) -{ - SRTPProtoContext *s = h->priv_data; - return ffurl_get_multi_file_handle(s->rtp_hd, handles, numhandles); -} - -URLProtocol ff_srtp_protocol = { - .name = "srtp", - .url_open = srtp_open, - .url_read = srtp_read, - .url_write = srtp_write, - .url_close = srtp_close, - .url_get_file_handle = srtp_get_file_handle, - .url_get_multi_file_handle = srtp_get_multi_file_handle, - .priv_data_size = sizeof(SRTPProtoContext), - .priv_data_class = &srtp_context_class, - .flags = URL_PROTOCOL_FLAG_NETWORK, -}; |