X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavformat%2Frtp.h;h=e9f87782fafacc7054d696faed4f6abea912162e;hb=2f0accf1038350a01a7b52f3cbe75a554f7438a3;hp=0c0ae35ac02cd444852d40b0f23a525cce25c655;hpb=abac6175916c57f59ddb51ffe41bfd1d9851fe38;p=ffmpeg

diff --git a/libavformat/rtp.h b/libavformat/rtp.h
index 0c0ae35ac02..e9f87782faf 100644
--- a/libavformat/rtp.h
+++ b/libavformat/rtp.h
@@ -1,40 +1,96 @@
 /*
  * RTP definitions
- * Copyright (c) 2002 Fabrice Bellard.
+ * Copyright (c) 2002 Fabrice Bellard
  *
- * This library is free software; you can redistribute it and/or
+ * This file is part of Libav.
+ *
+ * Libav 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 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
  *
- * This library is distributed in the hope that it will be useful,
+ * Libav 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 this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#ifndef AVFORMAT_RTP_H
+#define AVFORMAT_RTP_H
+
+#include "libavformat/avformat.h"
+#include "libavcodec/avcodec.h"
+
+/**
+ * Return the payload type for a given codec used in the given format context.
+ *
+ * @param fmt   The context of the format
+ * @param codec The context of the codec
+ * @return The payload type (the 'PT' field in the RTP header).
+ */
+int ff_rtp_get_payload_type(AVFormatContext *fmt, AVCodecContext *codec);
+
+/**
+ * Initialize a codec context based on the payload type.
+ *
+ * Fill the codec_type and codec_id fields of a codec context with
+ * information depending on the payload type; for audio codecs, the
+ * channels and sample_rate fields are also filled.
+ *
+ * @param codec The context of the codec
+ * @param payload_type The payload type (the 'PT' field in the RTP header)
+ * @return In case of unknown payload type or dynamic payload type, a
+ * negative value is returned; otherwise, 0 is returned
+ */
+int ff_rtp_get_codec_info(AVCodecContext *codec, int payload_type);
+
+/**
+ * Return the encoding name (as defined in
+ * http://www.iana.org/assignments/rtp-parameters) for a given payload type.
+ *
+ * @param payload_type The payload type (the 'PT' field in the RTP header)
+ * @return In case of unknown payload type or dynamic payload type, a pointer
+ * to an empty string is returned; otherwise, a pointer to a string containing
+ * the encoding name is returned
  */
-#ifndef RTP_H
-#define RTP_H
+const char *ff_rtp_enc_name(int payload_type);
 
-#define RTP_MIN_PACKET_LENGTH 12
-#define RTP_MAX_PACKET_LENGTH 1500 /* XXX: suppress this define */
+/**
+ * Return the codec id for the given encoding name and codec type.
+ *
+ * @param buf A pointer to the string containing the encoding name
+ * @param codec_type The codec type
+ * @return In case of unknown encoding name, CODEC_ID_NONE is returned;
+ * otherwise, the codec id is returned
+ */
+enum CodecID ff_rtp_codec_id(const char *buf, enum AVMediaType codec_type);
 
-int rtp_init(void);
-int rtp_get_codec_info(AVCodecContext *codec, int payload_type);
-int rtp_get_payload_type(AVCodecContext *codec);
-int rtp_parse_packet(AVFormatContext *s1, AVPacket *pkt, 
-                     const unsigned char *buf, int len);
+#define RTP_PT_PRIVATE 96
+#define RTP_VERSION 2
+#define RTP_MAX_SDES 256   /**< maximum text length for SDES */
 
-extern AVOutputFormat rtp_mux;
-extern AVInputFormat rtp_demux;
+/* RTCP packets use 0.5% of the bandwidth */
+#define RTCP_TX_RATIO_NUM 5
+#define RTCP_TX_RATIO_DEN 1000
+
+/* An arbitrary id value for RTP Xiph streams - only relevant to indicate
+ * the the configuration has changed within a stream (by changing the
+ * ident value sent).
+ */
+#define RTP_XIPH_IDENT 0xfecdba
 
-int rtp_get_local_port(URLContext *h);
-int rtp_set_remote_url(URLContext *h, const char *uri);
-void rtp_get_file_handles(URLContext *h, int *prtp_fd, int *prtcp_fd);
+/* RTCP packet types */
+enum RTCPType {
+    RTCP_SR     = 200,
+    RTCP_RR,   // 201
+    RTCP_SDES, // 202
+    RTCP_BYE,  // 203
+    RTCP_APP   // 204
+};
 
-extern URLProtocol rtp_protocol;
+#define RTP_PT_IS_RTCP(x) ((x) >= RTCP_SR && (x) <= RTCP_APP)
 
-#endif /* RTP_H */
+#endif /* AVFORMAT_RTP_H */