Commit 9fd6b843 authored by Kostya Shishkov's avatar Kostya Shishkov
Browse files

RTMP protocol support (as a client)

Originally committed as revision 19556 to svn://svn.ffmpeg.org/ffmpeg/trunk
parent abbe30ad
......@@ -29,6 +29,7 @@ version <next>:
- nonfree libamr support for AMR-NB/WB decoding/encoding removed
- Experimental AAC encoder
- RTP depacketization of ASF and RTSP from WMS servers
- RTMP support in libavformat
......
......@@ -195,6 +195,7 @@ library:
@item RL2 @tab @tab X
@tab Audio and video format used in some games by Entertainment Software Partners.
@item RPL/ARMovie @tab @tab X
@item RTMP @tab @tab X
@item RTP @tab @tab X
@item RTSP @tab @tab X
@item SDP @tab @tab X
......
......@@ -237,6 +237,7 @@ OBJS-$(CONFIG_FILE_PROTOCOL) += file.o
OBJS-$(CONFIG_GOPHER_PROTOCOL) += gopher.o
OBJS-$(CONFIG_HTTP_PROTOCOL) += http.o
OBJS-$(CONFIG_PIPE_PROTOCOL) += file.o
OBJS-$(CONFIG_RTMP_PROTOCOL) += rtmpproto.o rtmppkt.o
OBJS-$(CONFIG_RTP_PROTOCOL) += rtpproto.o
OBJS-$(CONFIG_TCP_PROTOCOL) += tcp.o
OBJS-$(CONFIG_UDP_PROTOCOL) += udp.o
......
......@@ -209,6 +209,7 @@ void av_register_all(void)
REGISTER_PROTOCOL (GOPHER, gopher);
REGISTER_PROTOCOL (HTTP, http);
REGISTER_PROTOCOL (PIPE, pipe);
REGISTER_PROTOCOL (RTMP, rtmp);
REGISTER_PROTOCOL (RTP, rtp);
REGISTER_PROTOCOL (TCP, tcp);
REGISTER_PROTOCOL (UDP, udp);
......
......@@ -22,7 +22,7 @@
#define AVFORMAT_AVFORMAT_H
#define LIBAVFORMAT_VERSION_MAJOR 52
#define LIBAVFORMAT_VERSION_MINOR 36
#define LIBAVFORMAT_VERSION_MINOR 37
#define LIBAVFORMAT_VERSION_MICRO 0
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
......
/*
* RTMP definitions
* Copyright (c) 2009 Kostya Shishkov
*
* This file is part of FFmpeg.
*
* FFmpeg 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,
* 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
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVFORMAT_RTMP_H
#define AVFORMAT_RTMP_H
#include "avformat.h"
#define RTMP_DEFAULT_PORT 1935
#define RTMP_HANDSHAKE_PACKET_SIZE 1536
/**
* emulated Flash client version - 9.0.124.2 on Linux
* @{
*/
#define RTMP_CLIENT_PLATFORM "LNX"
#define RTMP_CLIENT_VER1 9
#define RTMP_CLIENT_VER2 0
#define RTMP_CLIENT_VER3 124
#define RTMP_CLIENT_VER4 2
/** @} */ //version defines
#endif /* AVFORMAT_RTMP_H */
/*
* RTMP input format
* Copyright (c) 2009 Kostya Shishkov
*
* This file is part of FFmpeg.
*
* FFmpeg 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,
* 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
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavcodec/bytestream.h"
#include "libavutil/avstring.h"
#include "avformat.h"
#include "rtmppkt.h"
#include "flv.h"
void ff_amf_write_bool(uint8_t **dst, int val)
{
bytestream_put_byte(dst, AMF_DATA_TYPE_BOOL);
bytestream_put_byte(dst, val);
}
void ff_amf_write_number(uint8_t **dst, double val)
{
bytestream_put_byte(dst, AMF_DATA_TYPE_NUMBER);
bytestream_put_be64(dst, av_dbl2int(val));
}
void ff_amf_write_string(uint8_t **dst, const char *str)
{
bytestream_put_byte(dst, AMF_DATA_TYPE_STRING);
bytestream_put_be16(dst, strlen(str));
bytestream_put_buffer(dst, str, strlen(str));
}
void ff_amf_write_null(uint8_t **dst)
{
bytestream_put_byte(dst, AMF_DATA_TYPE_NULL);
}
void ff_amf_write_object_start(uint8_t **dst)
{
bytestream_put_byte(dst, AMF_DATA_TYPE_OBJECT);
}
void ff_amf_write_field_name(uint8_t **dst, const char *str)
{
bytestream_put_be16(dst, strlen(str));
bytestream_put_buffer(dst, str, strlen(str));
}
void ff_amf_write_object_end(uint8_t **dst)
{
/* first two bytes are field name length = 0,
* AMF object should end with it and end marker
*/
bytestream_put_be24(dst, AMF_DATA_TYPE_OBJECT_END);
}
int ff_rtmp_packet_read(URLContext *h, RTMPPacket *p,
int chunk_size, RTMPPacket *prev_pkt)
{
uint8_t hdr, t, buf[16];
int channel_id, timestamp, data_size, offset = 0;
uint32_t extra = 0;
uint8_t type;
if (url_read(h, &hdr, 1) != 1)
return AVERROR(EIO);
channel_id = hdr & 0x3F;
data_size = prev_pkt[channel_id].data_size;
type = prev_pkt[channel_id].type;
extra = prev_pkt[channel_id].extra;
hdr >>= 6;
if (hdr == RTMP_PS_ONEBYTE) {
//todo
return -1;
} else {
if (url_read_complete(h, buf, 3) != 3)
return AVERROR(EIO);
timestamp = AV_RB24(buf);
if (hdr != RTMP_PS_FOURBYTES) {
if (url_read_complete(h, buf, 3) != 3)
return AVERROR(EIO);
data_size = AV_RB24(buf);
if (url_read_complete(h, &type, 1) != 1)
return AVERROR(EIO);
if (hdr == RTMP_PS_TWELVEBYTES) {
if (url_read_complete(h, buf, 4) != 4)
return AVERROR(EIO);
extra = AV_RL32(buf);
}
}
}
if (ff_rtmp_packet_create(p, channel_id, type, timestamp, data_size))
return -1;
p->extra = extra;
// save history
prev_pkt[channel_id].channel_id = channel_id;
prev_pkt[channel_id].type = type;
prev_pkt[channel_id].data_size = data_size;
prev_pkt[channel_id].timestamp = timestamp;
prev_pkt[channel_id].extra = extra;
while (data_size > 0) {
int toread = FFMIN(data_size, chunk_size);
if (url_read_complete(h, p->data + offset, toread) != toread) {
ff_rtmp_packet_destroy(p);
return AVERROR(EIO);
}
data_size -= chunk_size;
offset += chunk_size;
if (data_size > 0) {
url_read_complete(h, &t, 1); //marker
if (t != (0xC0 + channel_id))
return -1;
}
}
return 0;
}
int ff_rtmp_packet_write(URLContext *h, RTMPPacket *pkt,
int chunk_size, RTMPPacket *prev_pkt)
{
uint8_t pkt_hdr[16], *p = pkt_hdr;
int mode = RTMP_PS_TWELVEBYTES;
int off = 0;
//TODO: header compression
bytestream_put_byte(&p, pkt->channel_id | (mode << 6));
if (mode != RTMP_PS_ONEBYTE) {
bytestream_put_be24(&p, pkt->timestamp);
if (mode != RTMP_PS_FOURBYTES) {
bytestream_put_be24(&p, pkt->data_size);
bytestream_put_byte(&p, pkt->type);
if (mode == RTMP_PS_TWELVEBYTES)
bytestream_put_le32(&p, pkt->extra);
}
}
url_write(h, pkt_hdr, p-pkt_hdr);
while (off < pkt->data_size) {
int towrite = FFMIN(chunk_size, pkt->data_size - off);
url_write(h, pkt->data + off, towrite);
off += towrite;
if (off < pkt->data_size) {
uint8_t marker = 0xC0 | pkt->channel_id;
url_write(h, &marker, 1);
}
}
return 0;
}
int ff_rtmp_packet_create(RTMPPacket *pkt, int channel_id, RTMPPacketType type,
int timestamp, int size)
{
pkt->data = av_malloc(size);
if (!pkt->data)
return AVERROR(ENOMEM);
pkt->data_size = size;
pkt->channel_id = channel_id;
pkt->type = type;
pkt->timestamp = timestamp;
pkt->extra = 0;
return 0;
}
void ff_rtmp_packet_destroy(RTMPPacket *pkt)
{
if (!pkt)
return;
av_freep(&pkt->data);
pkt->data_size = 0;
}
int ff_amf_tag_size(const uint8_t *data, const uint8_t *data_end)
{
const uint8_t *base = data;
if (data >= data_end)
return -1;
switch (*data++) {
case AMF_DATA_TYPE_NUMBER: return 9;
case AMF_DATA_TYPE_BOOL: return 2;
case AMF_DATA_TYPE_STRING: return 3 + AV_RB16(data);
case AMF_DATA_TYPE_LONG_STRING: return 5 + AV_RB32(data);
case AMF_DATA_TYPE_NULL: return 1;
case AMF_DATA_TYPE_ARRAY:
data += 4;
case AMF_DATA_TYPE_OBJECT:
for (;;) {
int size = bytestream_get_be16(&data);
int t;
if (!size) {
data++;
break;
}
if (data + size >= data_end || data + size < data)
return -1;
data += size;
t = ff_amf_tag_size(data, data_end);
if (t < 0 || data + t >= data_end)
return -1;
data += t;
}
return data - base;
case AMF_DATA_TYPE_OBJECT_END: return 1;
default: return -1;
}
}
int ff_amf_get_field_value(const uint8_t *data, const uint8_t *data_end,
const uint8_t *name, uint8_t *dst, int dst_size)
{
int namelen = strlen(name);
int len;
if (data_end - data < 3)
return -1;
if (*data++ != AMF_DATA_TYPE_OBJECT)
return -1;
for (;;) {
int size = bytestream_get_be16(&data);
if (!size)
break;
if (data + size >= data_end || data + size < data)
return -1;
data += size;
if (size == namelen && !memcmp(data-size, name, namelen)) {
switch (*data++) {
case AMF_DATA_TYPE_NUMBER:
snprintf(dst, dst_size, "%g", av_int2dbl(AV_RB64(data)));
break;
case AMF_DATA_TYPE_BOOL:
snprintf(dst, dst_size, "%s", *data ? "true" : "false");
break;
case AMF_DATA_TYPE_STRING:
len = bytestream_get_be16(&data);
av_strlcpy(dst, data, FFMIN(len+1, dst_size));
break;
default:
return -1;
}
return 0;
}
len = ff_amf_tag_size(data, data_end);
if (len < 0 || data + len >= data_end || data + len < data)
return -1;
data += len;
}
return -1;
}
/*
* RTMP packet utilities
* Copyright (c) 2009 Kostya Shishkov
*
* This file is part of FFmpeg.
*
* FFmpeg 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,
* 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
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVFORMAT_RTMPPKT_H
#define AVFORMAT_RTMPPKT_H
#include "avformat.h"
/** maximum possible number of different RTMP channels */
#define RTMP_CHANNELS 64
/**
* channels used to for RTMP packets with different purposes (i.e. data, network
* control, remote procedure calls, etc.)
*/
enum RTMPChannel {
RTMP_NETWORK_CHANNEL = 2, ///< channel for network-related messages (bandwidth report, ping, etc)
RTMP_SYSTEM_CHANNEL, ///< channel for sending server control messages
RTMP_VIDEO_CHANNEL = 8, ///< channel for video data
RTMP_AUDIO_CHANNEL, ///< channel for audio data
};
/**
* known RTMP packet types
*/
typedef enum RTMPPacketType {
RTMP_PT_CHUNK_SIZE = 1, ///< chunk size change
RTMP_PT_BYTES_READ = 3, ///< number of bytes read
RTMP_PT_PING, ///< ping
RTMP_PT_SERVER_BW, ///< server bandwidth
RTMP_PT_CLIENT_BW, ///< client bandwidth
RTMP_PT_AUDIO = 8, ///< audio packet
RTMP_PT_VIDEO, ///< video packet
RTMP_PT_FLEX_STREAM = 15, ///< Flex shared stream
RTMP_PT_FLEX_OBJECT, ///< Flex shared object
RTMP_PT_FLEX_MESSAGE, ///< Flex shared message
RTMP_PT_NOTIFY, ///< some notification
RTMP_PT_SHARED_OBJ, ///< shared object
RTMP_PT_INVOKE, ///< invoke some stream action
RTMP_PT_METADATA = 22, ///< FLV metadata
} RTMPPacketType;
/**
* possible RTMP packet header sizes
*/
enum RTMPPacketSize {
RTMP_PS_TWELVEBYTES = 0, ///< packet has 12-byte header
RTMP_PS_EIGHTBYTES, ///< packet has 8-byte header
RTMP_PS_FOURBYTES, ///< packet has 4-byte header
RTMP_PS_ONEBYTE ///< packet is really a next chunk of a packet
};
/**
* structure for holding RTMP packets
*/
typedef struct RTMPPacket {
uint8_t channel_id; ///< RTMP channel ID (nothing to do with audio/video channels though)
RTMPPacketType type; ///< packet payload type
uint32_t timestamp; ///< packet full timestamp or timestamp increment to the previous one in milliseconds (latter only for media packets)
uint32_t extra; ///< probably an additional channel ID used during streaming data
uint8_t *data; ///< packet payload
int data_size; ///< packet payload size
} RTMPPacket;
/**
* Creates new RTMP packet with given attributes.
*
* @param pkt packet
* @param channel_id packet channel ID
* @param type packet type
* @param timestamp packet timestamp
* @param size packet size
* @return zero on success, negative value otherwise
*/
int ff_rtmp_packet_create(RTMPPacket *pkt, int channel_id, RTMPPacketType type,
int timestamp, int size);
/**
* Frees RTMP packet.
*
* @param pkt packet
*/
void ff_rtmp_packet_destroy(RTMPPacket *pkt);
/**
* Reads RTMP packet sent by the server.
*
* @param h reader context
* @param p packet
* @param chunk_size current chunk size
* @param prev_pkt previously read packet headers for all channels
* (may be needed for restoring incomplete packet header)
* @return zero on success, negative value otherwise
*/
int ff_rtmp_packet_read(URLContext *h, RTMPPacket *p,
int chunk_size, RTMPPacket *prev_pkt);
/**
* Sends RTMP packet to the server.
*
* @param h reader context
* @param p packet to send
* @param chunk_size current chunk size
* @param prev_pkt previously sent packet headers for all channels
* (may be used for packet header compressing)
* @return zero on success, negative value otherwise
*/
int ff_rtmp_packet_write(URLContext *h, RTMPPacket *p,
int chunk_size, RTMPPacket *prev_pkt);
/**
* @defgroup amffuncs functions used to work with AMF format (which is also used in .flv)
* @see amf_* funcs in libavformat/flvdec.c
* @{
*/
/**
* Calculates number of bytes taken by first AMF entry in data.
*
* @param data input data
* @param data_end input buffer end
* @return number of bytes used by first AMF entry
*/
int ff_amf_tag_size(const uint8_t *data, const uint8_t *data_end);
/**
* Retrieves value of given AMF object field in string form.
*
* @param data AMF object data
* @param data_end input buffer end
* @param name name of field to retrieve
* @param dst buffer for storing result
* @param dst_size output buffer size
* @return 0 if search and retrieval succeeded, negative value otherwise
*/
int ff_amf_get_field_value(const uint8_t *data, const uint8_t *data_end,
const uint8_t *name, uint8_t *dst, int dst_size);
/**
* Writes boolean value in AMF format to buffer.
*
* @param dst pointer to the input buffer (will be modified)
* @param val value to write
*/
void ff_amf_write_bool(uint8_t **dst, int val);
/**
* Writes number in AMF format to buffer.
*
* @param dst pointer to the input buffer (will be modified)
* @param num value to write
*/
void ff_amf_write_number(uint8_t **dst, double num);
/**
* Writes string in AMF format to buffer.
*
* @param dst pointer to the input buffer (will be modified)
* @param str string to write
*/
void ff_amf_write_string(uint8_t **dst, const char *str);
/**
* Writes AMF NULL value to buffer.
*
* @param dst pointer to the input buffer (will be modified)
*/
void ff_amf_write_null(uint8_t **dst);
/**
* Writes marker for AMF object to buffer.
*
* @param dst pointer to the input buffer (will be modified)
*/
void ff_amf_write_object_start(uint8_t **dst);
/**
* Writes string used as field name in AMF object to buffer.
*
* @param dst pointer to the input buffer (will be modified)
* @param str string to write
*/
void ff_amf_write_field_name(uint8_t **dst, const char *str);
/**
* Writes marker for end of AMF object to buffer.
*
* @param dst pointer to the input buffer (will be modified)
*/
void ff_amf_write_object_end(uint8_t **dst);
/** @} */ // AMF funcs
#endif /* AVFORMAT_RTMPPKT_H */
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