Add an RTSP muxer

Originally committed as revision 21971 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 131 insertions, 0 deletions

diff --git a/libavformat/rtspenc.c b/libavformat/rtspenc.c
new file mode 100644
index 0000000000..c918b3e8c0
--- /dev/null
+++ b/libavformat/rtspenc.c
@@ -0,0 +1,131 @@
+/*
+ * RTSP muxer
+ * Copyright (c) 2010 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 "avformat.h"
+
+#include <sys/time.h>
+#if HAVE_SYS_SELECT_H
+#include <sys/select.h>
+#endif
+#include "network.h"
+#include "rtsp.h"
+
+static int rtsp_write_record(AVFormatContext *s)
+{
+    RTSPState *rt = s->priv_data;
+    RTSPMessageHeader reply1, *reply = &reply1;
+    char cmd[1024];
+
+    snprintf(cmd, sizeof(cmd),
+             "RECORD %s RTSP/1.0\r\n"
+             "Range: npt=%0.3f-\r\n",
+             s->filename,
+             (double) 0);
+    rtsp_send_cmd(s, cmd, reply, NULL);
+    if (reply->status_code != RTSP_STATUS_OK)
+        return -1;
+    rt->state = RTSP_STATE_STREAMING;
+    return 0;
+}
+
+static int rtsp_write_header(AVFormatContext *s)
+{
+    RTSPState *rt = s->priv_data;
+    int ret;
+
+    ret = rtsp_connect(s);
+    if (ret)
+        return ret;
+
+    if (rtsp_write_record(s) < 0) {
+        rtsp_close_streams(s);
+        url_close(rt->rtsp_hd);
+        return AVERROR_INVALIDDATA;
+    }
+    return 0;
+}
+
+static int rtsp_write_packet(AVFormatContext *s, AVPacket *pkt)
+{
+    RTSPState *rt = s->priv_data;
+    RTSPStream *rtsp_st;
+    fd_set rfds;
+    int n, tcp_fd;
+    struct timeval tv;
+    AVFormatContext *rtpctx;
+
+    FD_ZERO(&rfds);
+    tcp_fd = url_get_file_handle(rt->rtsp_hd);
+    FD_SET(tcp_fd, &rfds);
+
+    tv.tv_sec = 0;
+    tv.tv_usec = 0;
+    n = select(tcp_fd + 1, &rfds, NULL, NULL, &tv);
+    if (n > 0) {
+        if (FD_ISSET(tcp_fd, &rfds)) {
+            RTSPMessageHeader reply;
+
+            if (rtsp_read_reply(s, &reply, NULL, 0) < 0)
+                return AVERROR(EPIPE);
+            /* XXX: parse message */
+            if (rt->state != RTSP_STATE_STREAMING)
+                return AVERROR(EPIPE);
+        }
+    }
+
+    if (pkt->stream_index < 0 || pkt->stream_index >= rt->nb_rtsp_streams)
+        return AVERROR_INVALIDDATA;
+    rtsp_st = rt->rtsp_streams[pkt->stream_index];
+    rtpctx = rtsp_st->transport_priv;
+
+    pkt->stream_index = 0;
+    return av_write_frame(rtpctx, pkt);
+}
+
+static int rtsp_write_close(AVFormatContext *s)
+{
+    RTSPState *rt = s->priv_data;
+    char cmd[1024];
+
+    snprintf(cmd, sizeof(cmd),
+             "TEARDOWN %s RTSP/1.0\r\n",
+             s->filename);
+    rtsp_send_cmd_async(s, cmd);
+
+    rtsp_close_streams(s);
+    url_close(rt->rtsp_hd);
+    return 0;
+}
+
+AVOutputFormat rtsp_muxer = {
+    "rtsp",
+    NULL_IF_CONFIG_SMALL("RTSP output format"),
+    NULL,
+    NULL,
+    sizeof(RTSPState),
+    CODEC_ID_PCM_MULAW,
+    CODEC_ID_NONE,
+    rtsp_write_header,
+    rtsp_write_packet,
+    rtsp_write_close,
+    .flags = AVFMT_NOFILE | AVFMT_GLOBALHEADER,
+};
+