rtsp/sdp: Move code into correct ifdefs

This makes the code dependencies correct. Previously, the SDP demuxer
wasn't buildable on its own.

This also reverts rev 25343.

Originally committed as revision 25354 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/rtsp.c

@@ -1645,35 +1645,6 @@ redirect:
 }
 #endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
 
-#if CONFIG_RTSP_DEMUXER
-static int rtsp_read_header(AVFormatContext *s,
-                            AVFormatParameters *ap)
-{
-    RTSPState *rt = s->priv_data;
-    int ret;
-
-    ret = ff_rtsp_connect(s);
-    if (ret)
-        return ret;
-
-    rt->real_setup_cache = av_mallocz(2 * s->nb_streams * sizeof(*rt->real_setup_cache));
-    if (!rt->real_setup_cache)
-        return AVERROR(ENOMEM);
-    rt->real_setup = rt->real_setup_cache + s->nb_streams * sizeof(*rt->real_setup);
-
-    if (ap->initial_pause) {
-         /* do not start immediately */
-    } else {
-         if (rtsp_read_play(s) < 0) {
-            ff_rtsp_close_streams(s);
-            ff_rtsp_close_connections(s);
-            return AVERROR_INVALIDDATA;
-        }
-    }
-
-    return 0;
-}
-
 static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
                            uint8_t *buf, int buf_size, int64_t wait_end)
 {
@@ -1726,6 +1697,7 @@ static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
                     }
                 }
             }
+#if CONFIG_RTSP_DEMUXER
             if (tcp_fd != -1 && FD_ISSET(tcp_fd, &rfds)) {
                 RTSPMessageHeader reply;
 
@@ -1736,6 +1708,7 @@ static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
                 if (rt->state != RTSP_STATE_STREAMING)
                     return 0;
             }
+#endif
         } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
             return FF_NETERROR(ETIMEDOUT);
         } else if (n < 0 && errno != EINTR)
@@ -1744,58 +1717,7 @@ static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
 }
 
 static int tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
-                           uint8_t *buf, int buf_size)
+                           uint8_t *buf, int buf_size);
-{
-    RTSPState *rt = s->priv_data;
-    int id, len, i, ret;
-    RTSPStream *rtsp_st;
-
-#ifdef DEBUG_RTP_TCP
-    dprintf(s, "tcp_read_packet:\n");
-#endif
-redo:
-    for (;;) {
-        RTSPMessageHeader reply;
-
-        ret = ff_rtsp_read_reply(s, &reply, NULL, 1);
-        if (ret < 0)
-            return ret;
-        if (ret == 1) /* received '$' */
-            break;
-        /* XXX: parse message */
-        if (rt->state != RTSP_STATE_STREAMING)
-            return 0;
-    }
-    ret = url_read_complete(rt->rtsp_hd, buf, 3);
-    if (ret != 3)
-        return -1;
-    id  = buf[0];
-    len = AV_RB16(buf + 1);
-#ifdef DEBUG_RTP_TCP
-    dprintf(s, "id=%d len=%d\n", id, len);
-#endif
-    if (len > buf_size || len < 12)
-        goto redo;
-    /* get the data */
-    ret = url_read_complete(rt->rtsp_hd, buf, len);
-    if (ret != len)
-        return -1;
-    if (rt->transport == RTSP_TRANSPORT_RDT &&
-        ff_rdt_parse_header(buf, len, &id, NULL, NULL, NULL, NULL) < 0)
-        return -1;
-
-    /* find the matching stream */
-    for (i = 0; i < rt->nb_rtsp_streams; i++) {
-        rtsp_st = rt->rtsp_streams[i];
-        if (id >= rtsp_st->interleaved_min &&
-            id <= rtsp_st->interleaved_max)
-            goto found;
-    }
-    goto redo;
-found:
-    *prtsp_st = rtsp_st;
-    return len;
-}
 
 static int rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
 {
@@ -1848,9 +1770,11 @@ static int rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
 
     switch(rt->lower_transport) {
     default:
+#if CONFIG_RTSP_DEMUXER
     case RTSP_LOWER_TRANSPORT_TCP:
         len = tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
         break;
+#endif
     case RTSP_LOWER_TRANSPORT_UDP:
     case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
         len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
@@ -1910,6 +1834,88 @@ end:
     return ret;
 }
 
+#if CONFIG_RTSP_DEMUXER
+static int rtsp_read_header(AVFormatContext *s,
+                            AVFormatParameters *ap)
+{
+    RTSPState *rt = s->priv_data;
+    int ret;
+
+    ret = ff_rtsp_connect(s);
+    if (ret)
+        return ret;
+
+    rt->real_setup_cache = av_mallocz(2 * s->nb_streams * sizeof(*rt->real_setup_cache));
+    if (!rt->real_setup_cache)
+        return AVERROR(ENOMEM);
+    rt->real_setup = rt->real_setup_cache + s->nb_streams * sizeof(*rt->real_setup);
+
+    if (ap->initial_pause) {
+         /* do not start immediately */
+    } else {
+         if (rtsp_read_play(s) < 0) {
+            ff_rtsp_close_streams(s);
+            ff_rtsp_close_connections(s);
+            return AVERROR_INVALIDDATA;
+        }
+    }
+
+    return 0;
+}
+
+static int tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
+                           uint8_t *buf, int buf_size)
+{
+    RTSPState *rt = s->priv_data;
+    int id, len, i, ret;
+    RTSPStream *rtsp_st;
+
+#ifdef DEBUG_RTP_TCP
+    dprintf(s, "tcp_read_packet:\n");
+#endif
+redo:
+    for (;;) {
+        RTSPMessageHeader reply;
+
+        ret = ff_rtsp_read_reply(s, &reply, NULL, 1);
+        if (ret < 0)
+            return ret;
+        if (ret == 1) /* received '$' */
+            break;
+        /* XXX: parse message */
+        if (rt->state != RTSP_STATE_STREAMING)
+            return 0;
+    }
+    ret = url_read_complete(rt->rtsp_hd, buf, 3);
+    if (ret != 3)
+        return -1;
+    id  = buf[0];
+    len = AV_RB16(buf + 1);
+#ifdef DEBUG_RTP_TCP
+    dprintf(s, "id=%d len=%d\n", id, len);
+#endif
+    if (len > buf_size || len < 12)
+        goto redo;
+    /* get the data */
+    ret = url_read_complete(rt->rtsp_hd, buf, len);
+    if (ret != len)
+        return -1;
+    if (rt->transport == RTSP_TRANSPORT_RDT &&
+        ff_rdt_parse_header(buf, len, &id, NULL, NULL, NULL, NULL) < 0)
+        return -1;
+
+    /* find the matching stream */
+    for (i = 0; i < rt->nb_rtsp_streams; i++) {
+        rtsp_st = rt->rtsp_streams[i];
+        if (id >= rtsp_st->interleaved_min &&
+            id <= rtsp_st->interleaved_max)
+            goto found;
+    }
+    goto redo;
+found:
+    *prtsp_st = rtsp_st;
+    return len;
+}
 static int rtsp_read_packet(AVFormatContext *s, AVPacket *pkt)
 {
     RTSPState *rt = s->priv_data;