#include "avformat.h"
#include <sys/time.h>
-#if HAVE_SYS_SELECT_H
-#include <sys/select.h>
+#if HAVE_POLL_H
+#include <poll.h>
#endif
#include "network.h"
+#include "os_support.h"
#include "rtsp.h"
+#include "internal.h"
+#include "avio_internal.h"
+#include "libavutil/intreadwrite.h"
+#include "libavutil/avstring.h"
+#include "url.h"
+
+#define SDP_MAX_SIZE 16384
+
+int ff_rtsp_setup_output_streams(AVFormatContext *s, const char *addr)
+{
+ RTSPState *rt = s->priv_data;
+ RTSPMessageHeader reply1, *reply = &reply1;
+ int i;
+ char *sdp;
+ AVFormatContext sdp_ctx, *ctx_array[1];
+
+ s->start_time_realtime = av_gettime();
+
+ /* Announce the stream */
+ sdp = av_mallocz(SDP_MAX_SIZE);
+ if (sdp == NULL)
+ return AVERROR(ENOMEM);
+ /* We create the SDP based on the RTSP AVFormatContext where we
+ * aren't allowed to change the filename field. (We create the SDP
+ * based on the RTSP context since the contexts for the RTP streams
+ * don't exist yet.) In order to specify a custom URL with the actual
+ * peer IP instead of the originally specified hostname, we create
+ * a temporary copy of the AVFormatContext, where the custom URL is set.
+ *
+ * FIXME: Create the SDP without copying the AVFormatContext.
+ * This either requires setting up the RTP stream AVFormatContexts
+ * already here (complicating things immensely) or getting a more
+ * flexible SDP creation interface.
+ */
+ sdp_ctx = *s;
+ ff_url_join(sdp_ctx.filename, sizeof(sdp_ctx.filename),
+ "rtsp", NULL, addr, -1, NULL);
+ ctx_array[0] = &sdp_ctx;
+ if (av_sdp_create(ctx_array, 1, sdp, SDP_MAX_SIZE)) {
+ av_free(sdp);
+ return AVERROR_INVALIDDATA;
+ }
+ av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
+ ff_rtsp_send_cmd_with_content(s, "ANNOUNCE", rt->control_uri,
+ "Content-Type: application/sdp\r\n",
+ reply, NULL, sdp, strlen(sdp));
+ av_free(sdp);
+ if (reply->status_code != RTSP_STATUS_OK)
+ return AVERROR_INVALIDDATA;
+
+ /* Set up the RTSPStreams for each AVStream */
+ for (i = 0; i < s->nb_streams; i++) {
+ RTSPStream *rtsp_st;
+
+ rtsp_st = av_mallocz(sizeof(RTSPStream));
+ if (!rtsp_st)
+ return AVERROR(ENOMEM);
+ dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
+
+ rtsp_st->stream_index = i;
+
+ av_strlcpy(rtsp_st->control_url, rt->control_uri, sizeof(rtsp_st->control_url));
+ /* Note, this must match the relative uri set in the sdp content */
+ av_strlcatf(rtsp_st->control_url, sizeof(rtsp_st->control_url),
+ "/streamid=%d", i);
+ }
+
+ return 0;
+}
static int rtsp_write_record(AVFormatContext *s)
{
char cmd[1024];
snprintf(cmd, sizeof(cmd),
- "RECORD %s RTSP/1.0\r\n"
- "Range: npt=%0.3f-\r\n",
- s->filename,
- (double) 0);
- ff_rtsp_send_cmd(s, cmd, reply, NULL);
+ "Range: npt=0.000-\r\n");
+ ff_rtsp_send_cmd(s, "RECORD", rt->control_uri, cmd, reply, NULL);
if (reply->status_code != RTSP_STATUS_OK)
return -1;
rt->state = RTSP_STATE_STREAMING;
static int rtsp_write_header(AVFormatContext *s)
{
- RTSPState *rt = s->priv_data;
int ret;
ret = ff_rtsp_connect(s);
if (rtsp_write_record(s) < 0) {
ff_rtsp_close_streams(s);
- url_close(rt->rtsp_hd);
+ ff_rtsp_close_connections(s);
return AVERROR_INVALIDDATA;
}
return 0;
}
+static int tcp_write_packet(AVFormatContext *s, RTSPStream *rtsp_st)
+{
+ RTSPState *rt = s->priv_data;
+ AVFormatContext *rtpctx = rtsp_st->transport_priv;
+ uint8_t *buf, *ptr;
+ int size;
+ uint8_t *interleave_header, *interleaved_packet;
+
+ size = avio_close_dyn_buf(rtpctx->pb, &buf);
+ ptr = buf;
+ while (size > 4) {
+ uint32_t packet_len = AV_RB32(ptr);
+ int id;
+ /* The interleaving header is exactly 4 bytes, which happens to be
+ * the same size as the packet length header from
+ * ffio_open_dyn_packet_buf. So by writing the interleaving header
+ * over these bytes, we get a consecutive interleaved packet
+ * that can be written in one call. */
+ interleaved_packet = interleave_header = ptr;
+ ptr += 4;
+ size -= 4;
+ if (packet_len > size || packet_len < 2)
+ break;
+ if (ptr[1] >= RTCP_SR && ptr[1] <= RTCP_APP)
+ id = rtsp_st->interleaved_max; /* RTCP */
+ else
+ id = rtsp_st->interleaved_min; /* RTP */
+ interleave_header[0] = '$';
+ interleave_header[1] = id;
+ AV_WB16(interleave_header + 2, packet_len);
+ ffurl_write(rt->rtsp_hd_out, interleaved_packet, 4 + packet_len);
+ ptr += packet_len;
+ size -= packet_len;
+ }
+ av_free(buf);
+ ffio_open_dyn_packet_buf(&rtpctx->pb, RTSP_TCP_MAX_PACKET_SIZE);
+ 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;
+ int n;
+ struct pollfd p = {ffurl_get_file_handle(rt->rtsp_hd), POLLIN, 0};
AVFormatContext *rtpctx;
+ int ret;
- 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)) {
+ while (1) {
+ n = poll(&p, 1, 0);
+ if (n <= 0)
+ break;
+ if (p.revents & POLLIN) {
RTSPMessageHeader reply;
- if (ff_rtsp_read_reply(s, &reply, NULL, 0) < 0)
+ /* Don't let ff_rtsp_read_reply handle interleaved packets,
+ * since it would block and wait for an RTSP reply on the socket
+ * (which may not be coming any time soon) if it handles
+ * interleaved packets internally. */
+ ret = ff_rtsp_read_reply(s, &reply, NULL, 1, NULL);
+ if (ret < 0)
return AVERROR(EPIPE);
+ if (ret == 1)
+ ff_rtsp_skip_packet(s);
/* XXX: parse message */
if (rt->state != RTSP_STATE_STREAMING)
return AVERROR(EPIPE);
rtsp_st = rt->rtsp_streams[pkt->stream_index];
rtpctx = rtsp_st->transport_priv;
- pkt->stream_index = 0;
- return av_write_frame(rtpctx, pkt);
+ ret = ff_write_chained(rtpctx, 0, pkt, s);
+ /* ff_write_chained does all the RTP packetization. If using TCP as
+ * transport, rtpctx->pb is only a dyn_packet_buf that queues up the
+ * packets, so we need to send them out on the TCP connection separately.
+ */
+ if (!ret && rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP)
+ ret = tcp_write_packet(s, rtsp_st);
+ return ret;
}
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);
- ff_rtsp_send_cmd_async(s, cmd);
+ ff_rtsp_send_cmd_async(s, "TEARDOWN", rt->control_uri, NULL);
ff_rtsp_close_streams(s);
- url_close(rt->rtsp_hd);
+ ff_rtsp_close_connections(s);
+ ff_network_close();
return 0;
}
-AVOutputFormat rtsp_muxer = {
+AVOutputFormat ff_rtsp_muxer = {
"rtsp",
NULL_IF_CONFIG_SMALL("RTSP output format"),
NULL,
NULL,
sizeof(RTSPState),
- CODEC_ID_PCM_MULAW,
- CODEC_ID_NONE,
+ CODEC_ID_AAC,
+ CODEC_ID_MPEG4,
rtsp_write_header,
rtsp_write_packet,
rtsp_write_close,