mirror of https://github.com/FFmpeg/FFmpeg.git
* commit 'a2fc8dbae85339d1b418d296f2982b6c04c53c57': Add Haivision SRT protocol Merged-by: James Almer <jamrial@gmail.com>pull/283/head
James Almer
7 years ago
commit
a123e576a4
6 changed files with 694 additions and 0 deletions
@ -0,0 +1,546 @@ |
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/*
|
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* This file is part of FFmpeg. |
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* |
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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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/**
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* @file |
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* Haivision Open SRT (Secure Reliable Transport) protocol |
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*/ |
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#include <srt/srt.h> |
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#include "libavutil/avassert.h" |
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#include "libavutil/opt.h" |
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#include "libavutil/parseutils.h" |
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#include "libavutil/time.h" |
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#include "avformat.h" |
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#include "internal.h" |
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#include "network.h" |
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#include "os_support.h" |
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#include "url.h" |
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enum SRTMode { |
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SRT_MODE_CALLER = 0, |
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SRT_MODE_LISTENER = 1, |
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SRT_MODE_RENDEZVOUS = 2 |
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}; |
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typedef struct SRTContext { |
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const AVClass *class; |
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int fd; |
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int eid; |
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int64_t rw_timeout; |
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int64_t listen_timeout; |
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int recv_buffer_size; |
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int send_buffer_size; |
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|
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int64_t maxbw; |
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int pbkeylen; |
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char *passphrase; |
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int mss; |
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int ffs; |
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int ipttl; |
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int iptos; |
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int64_t inputbw; |
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int oheadbw; |
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int64_t tsbpddelay; |
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int tlpktdrop; |
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int nakreport; |
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int64_t connect_timeout; |
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enum SRTMode mode; |
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} SRTContext; |
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#define D AV_OPT_FLAG_DECODING_PARAM |
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#define E AV_OPT_FLAG_ENCODING_PARAM |
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#define OFFSET(x) offsetof(SRTContext, x) |
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static const AVOption libsrt_options[] = { |
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{ "rw_timeout", "Timeout of socket I/O operations", OFFSET(rw_timeout), AV_OPT_TYPE_INT64, { .i64 = -1 }, -1, INT64_MAX, .flags = D|E }, |
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{ "listen_timeout", "Connection awaiting timeout", OFFSET(listen_timeout), AV_OPT_TYPE_INT64, { .i64 = -1 }, -1, INT64_MAX, .flags = D|E }, |
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{ "send_buffer_size", "Socket send buffer size (in bytes)", OFFSET(send_buffer_size), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, .flags = D|E }, |
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{ "recv_buffer_size", "Socket receive buffer size (in bytes)", OFFSET(recv_buffer_size), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, .flags = D|E }, |
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{ "maxbw", "Maximum bandwidth (bytes per second) that the connection can use", OFFSET(maxbw), AV_OPT_TYPE_INT64, { .i64 = -1 }, -1, INT64_MAX, .flags = D|E }, |
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{ "pbkeylen", "Crypto key len in bytes {16,24,32} Default: 16 (128-bit)", OFFSET(pbkeylen), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 32, .flags = D|E }, |
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{ "passphrase", "Crypto PBKDF2 Passphrase size[0,10..64] 0:disable crypto", OFFSET(passphrase), AV_OPT_TYPE_STRING, { .str = NULL }, .flags = D|E }, |
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{ "mss", "The Maximum Segment Size", OFFSET(mss), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1500, .flags = D|E }, |
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{ "ffs", "Flight flag size (window size) (in bytes)", OFFSET(ffs), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, .flags = D|E }, |
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{ "ipttl", "IP Time To Live", OFFSET(ipttl), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 255, .flags = D|E }, |
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{ "iptos", "IP Type of Service", OFFSET(iptos), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 255, .flags = D|E }, |
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{ "inputbw", "Estimated input stream rate", OFFSET(inputbw), AV_OPT_TYPE_INT64, { .i64 = -1 }, -1, INT64_MAX, .flags = D|E }, |
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{ "oheadbw", "MaxBW ceiling based on % over input stream rate", OFFSET(oheadbw), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 100, .flags = D|E }, |
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{ "tsbpddelay", "TsbPd receiver delay to absorb burst of missed packet retransmission", OFFSET(tsbpddelay), AV_OPT_TYPE_INT64, { .i64 = -1 }, -1, INT64_MAX, .flags = D|E }, |
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{ "tlpktdrop", "Enable receiver pkt drop", OFFSET(tlpktdrop), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, .flags = D|E }, |
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{ "nakreport", "Enable receiver to send periodic NAK reports", OFFSET(nakreport), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, .flags = D|E }, |
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{ "connect_timeout", "Connect timeout. Caller default: 3000, rendezvous (x 10)", OFFSET(connect_timeout), AV_OPT_TYPE_INT64, { .i64 = -1 }, -1, INT64_MAX, .flags = D|E }, |
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{ "mode", "Connection mode (caller, listener, rendezvous)", OFFSET(mode), AV_OPT_TYPE_INT, { .i64 = SRT_MODE_CALLER }, SRT_MODE_CALLER, SRT_MODE_RENDEZVOUS, .flags = D|E, "mode" }, |
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{ "caller", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = SRT_MODE_CALLER }, INT_MIN, INT_MAX, .flags = D|E, "mode" }, |
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{ "listener", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = SRT_MODE_LISTENER }, INT_MIN, INT_MAX, .flags = D|E, "mode" }, |
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{ "rendezvous", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = SRT_MODE_RENDEZVOUS }, INT_MIN, INT_MAX, .flags = D|E, "mode" }, |
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{ NULL } |
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}; |
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static int libsrt_neterrno(URLContext *h) |
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{ |
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int err = srt_getlasterror(NULL); |
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av_log(h, AV_LOG_ERROR, "%s\n", srt_getlasterror_str()); |
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if (err == SRT_EASYNCRCV) |
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return AVERROR(EAGAIN); |
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return AVERROR_UNKNOWN; |
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} |
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static int libsrt_socket_nonblock(int socket, int enable) |
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{ |
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int ret = srt_setsockopt(socket, 0, SRTO_SNDSYN, &enable, sizeof(enable)); |
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if (ret < 0) |
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return ret; |
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return srt_setsockopt(socket, 0, SRTO_RCVSYN, &enable, sizeof(enable)); |
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} |
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static int libsrt_network_wait_fd(URLContext *h, int eid, int fd, int write) |
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{ |
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int ret, len = 1; |
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int modes = write ? SRT_EPOLL_OUT : SRT_EPOLL_IN; |
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SRTSOCKET ready[1]; |
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if (srt_epoll_add_usock(eid, fd, &modes) < 0) |
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return libsrt_neterrno(h); |
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if (write) { |
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ret = srt_epoll_wait(eid, 0, 0, ready, &len, POLLING_TIME, 0, 0, 0, 0); |
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} else { |
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ret = srt_epoll_wait(eid, ready, &len, 0, 0, POLLING_TIME, 0, 0, 0, 0); |
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} |
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if (ret < 0) { |
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if (srt_getlasterror(NULL) == SRT_ETIMEOUT) |
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ret = AVERROR(EAGAIN); |
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else |
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ret = libsrt_neterrno(h); |
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} else { |
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ret = 0; |
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} |
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if (srt_epoll_remove_usock(eid, fd) < 0) |
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return libsrt_neterrno(h); |
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return ret; |
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} |
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/* TODO de-duplicate code from ff_network_wait_fd_timeout() */ |
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static int libsrt_network_wait_fd_timeout(URLContext *h, int eid, int fd, int write, int64_t timeout, AVIOInterruptCB *int_cb) |
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{ |
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int ret; |
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int64_t wait_start = 0; |
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while (1) { |
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if (ff_check_interrupt(int_cb)) |
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return AVERROR_EXIT; |
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ret = libsrt_network_wait_fd(h, eid, fd, write); |
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if (ret != AVERROR(EAGAIN)) |
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return ret; |
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if (timeout > 0) { |
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if (!wait_start) |
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wait_start = av_gettime_relative(); |
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else if (av_gettime_relative() - wait_start > timeout) |
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return AVERROR(ETIMEDOUT); |
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} |
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} |
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} |
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static int libsrt_listen(int eid, int fd, const struct sockaddr *addr, socklen_t addrlen, URLContext *h, int timeout) |
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{ |
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int ret; |
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int reuse = 1; |
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if (srt_setsockopt(fd, SOL_SOCKET, SRTO_REUSEADDR, &reuse, sizeof(reuse))) { |
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av_log(h, AV_LOG_WARNING, "setsockopt(SRTO_REUSEADDR) failed\n"); |
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} |
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ret = srt_bind(fd, addr, addrlen); |
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if (ret) |
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return libsrt_neterrno(h); |
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ret = srt_listen(fd, 1); |
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if (ret) |
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return libsrt_neterrno(h); |
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while ((ret = libsrt_network_wait_fd_timeout(h, eid, fd, 1, timeout, &h->interrupt_callback))) { |
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switch (ret) { |
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case AVERROR(ETIMEDOUT): |
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continue; |
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default: |
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return ret; |
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} |
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} |
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ret = srt_accept(fd, NULL, NULL); |
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if (ret < 0) |
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return libsrt_neterrno(h); |
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if (libsrt_socket_nonblock(ret, 1) < 0) |
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av_log(h, AV_LOG_DEBUG, "libsrt_socket_nonblock failed\n"); |
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return ret; |
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} |
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static int libsrt_listen_connect(int eid, int fd, const struct sockaddr *addr, socklen_t addrlen, int timeout, URLContext *h, int will_try_next) |
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{ |
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int ret; |
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if (libsrt_socket_nonblock(fd, 1) < 0) |
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av_log(h, AV_LOG_DEBUG, "ff_socket_nonblock failed\n"); |
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while ((ret = srt_connect(fd, addr, addrlen))) { |
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ret = libsrt_neterrno(h); |
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switch (ret) { |
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case AVERROR(EINTR): |
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if (ff_check_interrupt(&h->interrupt_callback)) |
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return AVERROR_EXIT; |
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continue; |
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case AVERROR(EINPROGRESS): |
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case AVERROR(EAGAIN): |
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ret = libsrt_network_wait_fd_timeout(h, eid, fd, 1, timeout, &h->interrupt_callback); |
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if (ret < 0) |
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return ret; |
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ret = srt_getlasterror(NULL); |
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srt_clearlasterror(); |
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if (ret != 0) { |
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char buf[128]; |
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ret = AVERROR(ret); |
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av_strerror(ret, buf, sizeof(buf)); |
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if (will_try_next) |
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av_log(h, AV_LOG_WARNING, |
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"Connection to %s failed (%s), trying next address\n", |
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h->filename, buf); |
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else |
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av_log(h, AV_LOG_ERROR, "Connection to %s failed: %s\n", |
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h->filename, buf); |
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} |
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default: |
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return ret; |
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} |
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} |
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return ret; |
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} |
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static int libsrt_setsockopt(URLContext *h, int fd, SRT_SOCKOPT optname, const char * optnamestr, const void * optval, int optlen) |
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{ |
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if (srt_setsockopt(fd, 0, optname, optval, optlen) < 0) { |
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av_log(h, AV_LOG_ERROR, "failed to set option %s on socket: %s\n", optnamestr, srt_getlasterror_str()); |
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return AVERROR(EIO); |
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} |
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return 0; |
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} |
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/* - The "POST" options can be altered any time on a connected socket.
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They MAY have also some meaning when set prior to connecting; such |
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option is SRTO_RCVSYN, which makes connect/accept call asynchronous. |
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Because of that this option is treated special way in this app. */ |
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static int libsrt_set_options_post(URLContext *h, int fd) |
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{ |
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SRTContext *s = h->priv_data; |
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if ((s->inputbw >= 0 && libsrt_setsockopt(h, fd, SRTO_INPUTBW, "SRTO_INPUTBW", &s->inputbw, sizeof(s->inputbw)) < 0) || |
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(s->oheadbw >= 0 && libsrt_setsockopt(h, fd, SRTO_OHEADBW, "SRTO_OHEADBW", &s->oheadbw, sizeof(s->oheadbw)) < 0)) { |
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return AVERROR(EIO); |
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} |
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return 0; |
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} |
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/* - The "PRE" options must be set prior to connecting and can't be altered
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on a connected socket, however if set on a listening socket, they are |
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derived by accept-ed socket. */ |
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static int libsrt_set_options_pre(URLContext *h, int fd) |
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{ |
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SRTContext *s = h->priv_data; |
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int yes = 1; |
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int tsbpddelay = s->tsbpddelay / 1000; |
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int connect_timeout = s->connect_timeout; |
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if ((s->mode == SRT_MODE_RENDEZVOUS && libsrt_setsockopt(h, fd, SRTO_RENDEZVOUS, "SRTO_RENDEZVOUS", &yes, sizeof(yes)) < 0) || |
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(s->maxbw >= 0 && libsrt_setsockopt(h, fd, SRTO_MAXBW, "SRTO_MAXBW", &s->maxbw, sizeof(s->maxbw)) < 0) || |
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(s->pbkeylen >= 0 && libsrt_setsockopt(h, fd, SRTO_PBKEYLEN, "SRTO_PBKEYLEN", &s->pbkeylen, sizeof(s->pbkeylen)) < 0) || |
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(s->passphrase && libsrt_setsockopt(h, fd, SRTO_PASSPHRASE, "SRTO_PASSPHRASE", &s->passphrase, sizeof(s->passphrase)) < 0) || |
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(s->mss >= 0 && libsrt_setsockopt(h, fd, SRTO_MSS, "SRTO_MMS", &s->mss, sizeof(s->mss)) < 0) || |
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(s->ffs >= 0 && libsrt_setsockopt(h, fd, SRTO_FC, "SRTO_FC", &s->ffs, sizeof(s->ffs)) < 0) || |
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(s->ipttl >= 0 && libsrt_setsockopt(h, fd, SRTO_IPTTL, "SRTO_UPTTL", &s->ipttl, sizeof(s->ipttl)) < 0) || |
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(s->iptos >= 0 && libsrt_setsockopt(h, fd, SRTO_IPTOS, "SRTO_IPTOS", &s->iptos, sizeof(s->iptos)) < 0) || |
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(tsbpddelay >= 0 && libsrt_setsockopt(h, fd, SRTO_TSBPDDELAY, "SRTO_TSBPDELAY", &tsbpddelay, sizeof(tsbpddelay)) < 0) || |
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(s->tlpktdrop >= 0 && libsrt_setsockopt(h, fd, SRTO_TLPKTDROP, "SRTO_TLPKDROP", &s->tlpktdrop, sizeof(s->tlpktdrop)) < 0) || |
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(s->nakreport >= 0 && libsrt_setsockopt(h, fd, SRTO_NAKREPORT, "SRTO_NAKREPORT", &s->nakreport, sizeof(s->nakreport)) < 0) || |
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(connect_timeout >= 0 && libsrt_setsockopt(h, fd, SRTO_CONNTIMEO, "SRTO_CONNTIMEO", &connect_timeout, sizeof(connect_timeout)) <0 )) { |
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return AVERROR(EIO); |
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} |
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return 0; |
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} |
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static int libsrt_setup(URLContext *h, const char *uri, int flags) |
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{ |
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struct addrinfo hints = { 0 }, *ai, *cur_ai; |
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int port, fd = -1; |
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SRTContext *s = h->priv_data; |
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const char *p; |
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char buf[256]; |
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int ret; |
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char hostname[1024],proto[1024],path[1024]; |
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char portstr[10]; |
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int open_timeout = 5000000; |
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int eid; |
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|
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eid = srt_epoll_create(); |
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if (eid < 0) |
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return libsrt_neterrno(h); |
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s->eid = eid; |
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|
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av_url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname), |
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&port, path, sizeof(path), uri); |
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if (strcmp(proto, "srt")) |
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return AVERROR(EINVAL); |
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if (port <= 0 || port >= 65536) { |
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av_log(h, AV_LOG_ERROR, "Port missing in uri\n"); |
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return AVERROR(EINVAL); |
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} |
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p = strchr(uri, '?'); |
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if (p) { |
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if (av_find_info_tag(buf, sizeof(buf), "timeout", p)) { |
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s->rw_timeout = strtol(buf, NULL, 10); |
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} |
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if (av_find_info_tag(buf, sizeof(buf), "listen_timeout", p)) { |
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s->listen_timeout = strtol(buf, NULL, 10); |
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} |
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} |
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if (s->rw_timeout >= 0) { |
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open_timeout = h->rw_timeout = s->rw_timeout; |
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} |
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hints.ai_family = AF_UNSPEC; |
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hints.ai_socktype = SOCK_DGRAM; |
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snprintf(portstr, sizeof(portstr), "%d", port); |
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if (s->mode == SRT_MODE_LISTENER) |
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hints.ai_flags |= AI_PASSIVE; |
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ret = getaddrinfo(hostname[0] ? hostname : NULL, portstr, &hints, &ai); |
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if (ret) { |
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av_log(h, AV_LOG_ERROR, |
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"Failed to resolve hostname %s: %s\n", |
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hostname, gai_strerror(ret)); |
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return AVERROR(EIO); |
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} |
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|
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cur_ai = ai; |
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|
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restart: |
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|
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fd = srt_socket(cur_ai->ai_family, cur_ai->ai_socktype, 0); |
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if (fd < 0) { |
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ret = libsrt_neterrno(h); |
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goto fail; |
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} |
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|
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if ((ret = libsrt_set_options_pre(h, fd)) < 0) { |
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goto fail; |
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} |
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|
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/* Set the socket's send or receive buffer sizes, if specified.
|
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If unspecified or setting fails, system default is used. */ |
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if (s->recv_buffer_size > 0) { |
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srt_setsockopt(fd, SOL_SOCKET, SRTO_UDP_RCVBUF, &s->recv_buffer_size, sizeof (s->recv_buffer_size)); |
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} |
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if (s->send_buffer_size > 0) { |
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srt_setsockopt(fd, SOL_SOCKET, SRTO_UDP_SNDBUF, &s->send_buffer_size, sizeof (s->send_buffer_size)); |
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} |
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if (s->mode == SRT_MODE_LISTENER) { |
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// multi-client
|
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if ((ret = libsrt_listen(s->eid, fd, cur_ai->ai_addr, cur_ai->ai_addrlen, h, open_timeout / 1000)) < 0) |
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goto fail1; |
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fd = ret; |
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} else { |
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if (s->mode == SRT_MODE_RENDEZVOUS) { |
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ret = srt_bind(fd, cur_ai->ai_addr, cur_ai->ai_addrlen); |
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if (ret) |
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goto fail1; |
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} |
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|
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if ((ret = libsrt_listen_connect(s->eid, fd, cur_ai->ai_addr, cur_ai->ai_addrlen, |
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open_timeout / 1000, h, !!cur_ai->ai_next)) < 0) { |
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if (ret == AVERROR_EXIT) |
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goto fail1; |
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else |
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goto fail; |
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} |
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} |
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if ((ret = libsrt_set_options_post(h, fd)) < 0) { |
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goto fail; |
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} |
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|
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h->is_streamed = 1; |
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s->fd = fd; |
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|
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freeaddrinfo(ai); |
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return 0; |
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|
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fail: |
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if (cur_ai->ai_next) { |
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/* Retry with the next sockaddr */ |
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cur_ai = cur_ai->ai_next; |
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if (fd >= 0) |
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srt_close(fd); |
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ret = 0; |
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goto restart; |
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} |
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fail1: |
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if (fd >= 0) |
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srt_close(fd); |
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freeaddrinfo(ai); |
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return ret; |
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} |
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|
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static int libsrt_open(URLContext *h, const char *uri, int flags) |
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{ |
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SRTContext *s = h->priv_data; |
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const char * p; |
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char buf[256]; |
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|
||||
if (srt_startup() < 0) { |
||||
return AVERROR_UNKNOWN; |
||||
} |
||||
|
||||
/* SRT options (srt/srt.h) */ |
||||
p = strchr(uri, '?'); |
||||
if (p) { |
||||
if (av_find_info_tag(buf, sizeof(buf), "maxbw", p)) { |
||||
s->maxbw = strtoll(buf, NULL, 0); |
||||
} |
||||
if (av_find_info_tag(buf, sizeof(buf), "pbkeylen", p)) { |
||||
s->pbkeylen = strtol(buf, NULL, 10); |
||||
} |
||||
if (av_find_info_tag(buf, sizeof(buf), "passphrase", p)) { |
||||
s->passphrase = av_strndup(buf, strlen(buf)); |
||||
} |
||||
if (av_find_info_tag(buf, sizeof(buf), "mss", p)) { |
||||
s->mss = strtol(buf, NULL, 10); |
||||
} |
||||
if (av_find_info_tag(buf, sizeof(buf), "ffs", p)) { |
||||
s->ffs = strtol(buf, NULL, 10); |
||||
} |
||||
if (av_find_info_tag(buf, sizeof(buf), "ipttl", p)) { |
||||
s->ipttl = strtol(buf, NULL, 10); |
||||
} |
||||
if (av_find_info_tag(buf, sizeof(buf), "iptos", p)) { |
||||
s->iptos = strtol(buf, NULL, 10); |
||||
} |
||||
if (av_find_info_tag(buf, sizeof(buf), "inputbw", p)) { |
||||
s->inputbw = strtoll(buf, NULL, 10); |
||||
} |
||||
if (av_find_info_tag(buf, sizeof(buf), "oheadbw", p)) { |
||||
s->oheadbw = strtoll(buf, NULL, 10); |
||||
} |
||||
if (av_find_info_tag(buf, sizeof(buf), "tsbpddelay", p)) { |
||||
s->tsbpddelay = strtol(buf, NULL, 10); |
||||
} |
||||
if (av_find_info_tag(buf, sizeof(buf), "tlpktdrop", p)) { |
||||
s->tlpktdrop = strtol(buf, NULL, 10); |
||||
} |
||||
if (av_find_info_tag(buf, sizeof(buf), "nakreport", p)) { |
||||
s->nakreport = strtol(buf, NULL, 10); |
||||
} |
||||
if (av_find_info_tag(buf, sizeof(buf), "connect_timeout", p)) { |
||||
s->connect_timeout = strtol(buf, NULL, 10); |
||||
} |
||||
if (av_find_info_tag(buf, sizeof(buf), "mode", p)) { |
||||
if (!strcmp(buf, "caller")) { |
||||
s->mode = SRT_MODE_CALLER; |
||||
} else if (!strcmp(buf, "listener")) { |
||||
s->mode = SRT_MODE_LISTENER; |
||||
} else if (!strcmp(buf, "rendezvous")) { |
||||
s->mode = SRT_MODE_RENDEZVOUS; |
||||
} else { |
||||
return AVERROR(EIO); |
||||
} |
||||
} |
||||
} |
||||
return libsrt_setup(h, uri, flags); |
||||
} |
||||
|
||||
static int libsrt_read(URLContext *h, uint8_t *buf, int size) |
||||
{ |
||||
SRTContext *s = h->priv_data; |
||||
int ret; |
||||
|
||||
if (!(h->flags & AVIO_FLAG_NONBLOCK)) { |
||||
ret = libsrt_network_wait_fd_timeout(h, s->eid, s->fd, 0, h->rw_timeout, &h->interrupt_callback); |
||||
if (ret) |
||||
return ret; |
||||
} |
||||
|
||||
ret = srt_recvmsg(s->fd, buf, size); |
||||
if (ret < 0) { |
||||
ret = libsrt_neterrno(h); |
||||
} |
||||
|
||||
return ret; |
||||
} |
||||
|
||||
static int libsrt_write(URLContext *h, const uint8_t *buf, int size) |
||||
{ |
||||
SRTContext *s = h->priv_data; |
||||
int ret; |
||||
|
||||
if (!(h->flags & AVIO_FLAG_NONBLOCK)) { |
||||
ret = libsrt_network_wait_fd_timeout(h, s->eid, s->fd, 1, h->rw_timeout, &h->interrupt_callback); |
||||
if (ret) |
||||
return ret; |
||||
} |
||||
|
||||
ret = srt_sendmsg(s->fd, buf, size, -1, 0); |
||||
if (ret < 0) { |
||||
ret = libsrt_neterrno(h); |
||||
} |
||||
|
||||
return ret; |
||||
} |
||||
|
||||
static int libsrt_close(URLContext *h) |
||||
{ |
||||
SRTContext *s = h->priv_data; |
||||
|
||||
srt_close(s->fd); |
||||
|
||||
srt_epoll_release(s->eid); |
||||
|
||||
srt_cleanup(); |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
static int libsrt_get_file_handle(URLContext *h) |
||||
{ |
||||
SRTContext *s = h->priv_data; |
||||
return s->fd; |
||||
} |
||||
|
||||
static const AVClass libsrt_class = { |
||||
.class_name = "libsrt", |
||||
.item_name = av_default_item_name, |
||||
.option = libsrt_options, |
||||
.version = LIBAVUTIL_VERSION_INT, |
||||
}; |
||||
|
||||
const URLProtocol ff_libsrt_protocol = { |
||||
.name = "srt", |
||||
.url_open = libsrt_open, |
||||
.url_read = libsrt_read, |
||||
.url_write = libsrt_write, |
||||
.url_close = libsrt_close, |
||||
.url_get_file_handle = libsrt_get_file_handle, |
||||
.priv_data_size = sizeof(SRTContext), |
||||
.flags = URL_PROTOCOL_FLAG_NETWORK, |
||||
.priv_data_class = &libsrt_class, |
||||
}; |
||||
Loading…
Reference in new issue