lavf: Add functions for SRTP decryption/encryption

[ffmpeg] / libavformat / rtmp.h

diff --git a/libavformat/rtmp.h b/libavformat/rtmp.h
index b0436c0391bb5ae1348955b8ce2575c2dc42d28d..b9c5f1e430dcee9047fb33da83c9923a87f6492d 100644 (file)
--- a/libavformat/rtmp.h
+++ b/libavformat/rtmp.h
@@ -2,20 +2,20 @@
  * RTMP definitions
  * Copyright (c) 2009 Kostya Shishkov
  *
- * This file is part of FFmpeg.
+ * This file is part of Libav.
  *
- * FFmpeg is free software; you can redistribute it and/or
+ * 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 2.1 of the License, or (at your option) any later version.
  *
- * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
@@ -25,9 +25,13 @@
 #include "avformat.h"
 
 #define RTMP_DEFAULT_PORT 1935
+#define RTMPS_DEFAULT_PORT 443
 
 #define RTMP_HANDSHAKE_PACKET_SIZE 1536
 
+#define HMAC_IPAD_VAL 0x36
+#define HMAC_OPAD_VAL 0x5C
+
 /**
  * emulated Flash client version - 9.0.124.2 on Linux
  * @{
@@ -39,4 +43,29 @@
 #define RTMP_CLIENT_VER4    2
 /** @} */ //version defines
 
+/**
+ * Calculate HMAC-SHA2 digest for RTMP handshake packets.
+ *
+ * @param src    input buffer
+ * @param len    input buffer length (should be 1536)
+ * @param gap    offset in buffer where 32 bytes should not be taken into account
+ *               when calculating digest (since it will be used to store that digest)
+ * @param key    digest key
+ * @param keylen digest key length
+ * @param dst    buffer where calculated digest will be stored (32 bytes)
+ */
+int ff_rtmp_calc_digest(const uint8_t *src, int len, int gap,
+                        const uint8_t *key, int keylen, uint8_t *dst);
+
+/**
+ * Calculate digest position for RTMP handshake packets.
+ *
+ * @param buf input buffer (should be 1536 bytes)
+ * @param off offset in buffer where to start calculating digest position
+ * @param mod_val value used for computing modulo
+ * @param add_val value added at the end (after computing modulo)
+ */
+int ff_rtmp_calc_digest_pos(const uint8_t *buf, int off, int mod_val,
+                            int add_val);
+
 #endif /* AVFORMAT_RTMP_H */