Libav
rtmppkt.h
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1 /*
2  * RTMP packet utilities
3  * Copyright (c) 2009 Konstantin Shishkov
4  *
5  * This file is part of Libav.
6  *
7  * Libav is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * Libav is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with Libav; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #ifndef AVFORMAT_RTMPPKT_H
23 #define AVFORMAT_RTMPPKT_H
24 
25 #include "libavcodec/bytestream.h"
26 #include "avformat.h"
27 #include "url.h"
28 
30 #define RTMP_CHANNELS 65599
31 
42 };
43 
47 typedef enum RTMPPacketType {
63 
72 };
73 
77 typedef struct RTMPPacket {
78  int channel_id;
80  uint32_t timestamp;
81  uint32_t ts_delta;
82  uint32_t extra;
84  int size;
85  int offset;
86  int read;
87 } RTMPPacket;
88 
99 int ff_rtmp_packet_create(RTMPPacket *pkt, int channel_id, RTMPPacketType type,
100  int timestamp, int size);
101 
108 
121  int chunk_size, RTMPPacket **prev_pkt,
122  int *nb_prev_pkt);
135 int ff_rtmp_packet_read_internal(URLContext *h, RTMPPacket *p, int chunk_size,
136  RTMPPacket **prev_pkt, int *nb_prev_pkt,
137  uint8_t c);
138 
151  int chunk_size, RTMPPacket **prev_pkt,
152  int *nb_prev_pkt);
153 
160 void ff_rtmp_packet_dump(void *ctx, RTMPPacket *p);
161 
169 int ff_rtmp_check_alloc_array(RTMPPacket **prev_pkt, int *nb_prev_pkt,
170  int channel);
171 
185 int ff_amf_tag_size(const uint8_t *data, const uint8_t *data_end);
186 
197 int ff_amf_get_field_value(const uint8_t *data, const uint8_t *data_end,
198  const uint8_t *name, uint8_t *dst, int dst_size);
199 
206 void ff_amf_write_bool(uint8_t **dst, int val);
207 
214 void ff_amf_write_number(uint8_t **dst, double num);
215 
222 void ff_amf_write_string(uint8_t **dst, const char *str);
223 
231 void ff_amf_write_string2(uint8_t **dst, const char *str1, const char *str2);
232 
238 void ff_amf_write_null(uint8_t **dst);
239 
246 
253 void ff_amf_write_field_name(uint8_t **dst, const char *str);
254 
260 void ff_amf_write_object_end(uint8_t **dst);
261 
269 int ff_amf_read_bool(GetByteContext *gbc, int *val);
270 
278 int ff_amf_read_number(GetByteContext *gbc, double *val);
279 
293  int strsize, int *length);
294 
302 
309 int ff_amf_match_string(const uint8_t *data, int size, const char *str);
310  // AMF funcs
312 
313 #endif /* AVFORMAT_RTMPPKT_H */