#include "libavcodec/bytestream.h"
#include "libavutil/intfloat.h"
#include "libavutil/mem.h"
#include "rtmppkt.h"
#include "flv.h"
#include "url.h"

Functions
void	ff_amf_write_bool (uint8_t **dst, int val)
	Write boolean value in AMF format to buffer. More...

void	ff_amf_write_number (uint8_t **dst, double val)
	Write number in AMF format to buffer. More...

void	ff_amf_write_array_start (uint8_t **dst, uint32_t length)
	Write marker and length for AMF array to buffer. More...

void	ff_amf_write_string (uint8_t *dst, const char str)
	Write string in AMF format to buffer. More...

void	ff_amf_write_string2 (uint8_t *dst, const char str1, const char *str2)
	Write a string consisting of two parts in AMF format to a buffer. More...

void	ff_amf_write_null (uint8_t **dst)
	Write AMF NULL value to buffer. More...

void	ff_amf_write_object_start (uint8_t **dst)
	Write marker for AMF object to buffer. More...

void	ff_amf_write_field_name (uint8_t *dst, const char str)
	Write string used as field name in AMF object to buffer. More...

void	ff_amf_write_object_end (uint8_t **dst)
	Write marker for end of AMF object to buffer. More...

int	ff_amf_read_number (GetByteContext bc, double val)
	Read AMF number value. More...

int	ff_amf_get_string (GetByteContext bc, uint8_t str, int strsize, int *length)
	Get AMF string value. More...

int	ff_amf_read_string (GetByteContext bc, uint8_t str, int strsize, int *length)
	Read AMF string value. More...

int	ff_amf_read_null (GetByteContext *bc)
	Read AMF NULL value. More...

int	ff_rtmp_check_alloc_array (RTMPPacket *prev_pkt, int nb_prev_pkt, int channel)
	Enlarge the prev_pkt array to fit the given channel. More...

int	ff_rtmp_packet_read (URLContext h, RTMPPacket p, int chunk_size, RTMPPacket *prev_pkt, int nb_prev_pkt)
	Read RTMP packet sent by the server. More...

static int	rtmp_packet_read_one_chunk (URLContext h, RTMPPacket p, int chunk_size, RTMPPacket *prev_pkt_ptr, int nb_prev_pkt, uint8_t hdr)

int	ff_rtmp_packet_read_internal (URLContext h, RTMPPacket p, int chunk_size, RTMPPacket *prev_pkt, int nb_prev_pkt, uint8_t hdr)
	Read internal RTMP packet sent by the server. More...

int	ff_rtmp_packet_write (URLContext h, RTMPPacket pkt, int chunk_size, RTMPPacket *prev_pkt_ptr, int nb_prev_pkt)
	Send RTMP packet to the server. More...

int	ff_rtmp_packet_create (RTMPPacket *pkt, int channel_id, RTMPPacketType type, int timestamp, int size)
	Create new RTMP packet with given attributes. More...

void	ff_rtmp_packet_destroy (RTMPPacket *pkt)
	Free RTMP packet. More...

static int	amf_tag_skip (GetByteContext *gb)

int	ff_amf_tag_size (const uint8_t data, const uint8_t data_end)
	Calculate number of bytes taken by first AMF entry in data. More...

static int	amf_get_field_value2 (GetByteContext gb, const uint8_t name, uint8_t *dst, int dst_size)

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)
	Retrieve value of given AMF object field in string form. More...

int	ff_amf_match_string (const uint8_t data, int size, const char str)
	Match AMF string with a NULL-terminated string. More...

Function Documentation

◆ ff_amf_write_bool()

void ff_amf_write_bool	(	uint8_t **	dst,
		int	val
	)

Write boolean value in AMF format to buffer.

Parameters

dst	pointer to the input buffer (will be modified)
val	value to write

Definition at line 30 of file rtmppkt.c.

Referenced by gen_connect(), gen_pause(), and rtmp_write_amf_data().

◆ ff_amf_write_number()

void ff_amf_write_number	(	uint8_t **	dst,
		double	num
	)

Write number in AMF format to buffer.

Parameters

dst	pointer to the input buffer (will be modified)
num	value to write

Definition at line 36 of file rtmppkt.c.

Referenced by gen_check_bw(), gen_connect(), gen_create_stream(), gen_delete_stream(), gen_fcpublish_stream(), gen_fcsubscribe_stream(), gen_fcunpublish_stream(), gen_get_stream_length(), gen_pause(), gen_play(), gen_publish(), gen_release_stream(), gen_seek(), read_connect(), rtmp_write_amf_data(), send_invoke_response(), and write_status().

◆ ff_amf_write_array_start()

void ff_amf_write_array_start	(	uint8_t **	dst,
		uint32_t	length
	)

Write marker and length for AMF array to buffer.

Parameters

dst	pointer to the input buffer (will be modified)
length	value to write

Definition at line 42 of file rtmppkt.c.

Referenced by gen_connect().

◆ ff_amf_write_string()

void ff_amf_write_string	(	uint8_t **	dst,
		const char *	str
	)

Write string in AMF format to buffer.

Parameters

dst	pointer to the input buffer (will be modified)
str	string to write

Definition at line 48 of file rtmppkt.c.

Referenced by gen_check_bw(), gen_connect(), gen_create_stream(), gen_delete_stream(), gen_fcpublish_stream(), gen_fcsubscribe_stream(), gen_fcunpublish_stream(), gen_get_stream_length(), gen_pause(), gen_play(), gen_publish(), gen_release_stream(), gen_seek(), read_connect(), rtmp_write(), rtmp_write_amf_data(), send_invoke_response(), and write_status().

◆ ff_amf_write_string2()

void ff_amf_write_string2	(	uint8_t **	dst,
		const char *	str1,
		const char *	str2
	)

Write a string consisting of two parts in AMF format to a buffer.

Parameters

dst	pointer to the input buffer (will be modified)
str1	first string to write, may be null
str2	second string to write, may be null

Definition at line 55 of file rtmppkt.c.

Referenced by gen_connect().

◆ ff_amf_write_null()

void ff_amf_write_null ( uint8_t ** dst )

Write AMF NULL value to buffer.

Parameters

dst	pointer to the input buffer (will be modified)

Definition at line 68 of file rtmppkt.c.

Referenced by gen_check_bw(), gen_create_stream(), gen_delete_stream(), gen_fcpublish_stream(), gen_fcsubscribe_stream(), gen_fcunpublish_stream(), gen_get_stream_length(), gen_pause(), gen_play(), gen_publish(), gen_release_stream(), gen_seek(), read_connect(), rtmp_write_amf_data(), send_invoke_response(), and write_status().

◆ ff_amf_write_object_start()

void ff_amf_write_object_start ( uint8_t ** dst )

Write marker for AMF object to buffer.

Parameters

dst	pointer to the input buffer (will be modified)

Definition at line 73 of file rtmppkt.c.

Referenced by gen_connect(), read_connect(), rtmp_write_amf_data(), and write_status().

◆ ff_amf_write_field_name()

void ff_amf_write_field_name	(	uint8_t **	dst,
		const char *	str
	)

Write string used as field name in AMF object to buffer.

Parameters

dst	pointer to the input buffer (will be modified)
str	string to write

Definition at line 78 of file rtmppkt.c.

Referenced by gen_connect(), read_connect(), rtmp_write_amf_data(), and write_status().

◆ ff_amf_write_object_end()

void ff_amf_write_object_end ( uint8_t ** dst )

Write marker for end of AMF object to buffer.

Parameters

dst	pointer to the input buffer (will be modified)

Definition at line 84 of file rtmppkt.c.

Referenced by gen_connect(), read_connect(), rtmp_write_amf_data(), and write_status().

◆ ff_amf_read_number()

int ff_amf_read_number	(	GetByteContext *	gbc,
		double *	val
	)

Read AMF number value.

Parameters

[in,out]	gbc	GetByteContext initialized with AMF-formatted data
[out]	val	read value

Returns: 0 on success or an AVERROR code on failure

Definition at line 92 of file rtmppkt.c.

Referenced by find_tracked_method(), read_connect(), read_number_result(), rtmp_send_packet(), and send_invoke_response().

◆ ff_amf_get_string()

int ff_amf_get_string	(	GetByteContext *	bc,
		uint8_t *	str,
		int	strsize,
		int *	length
	)

Get AMF string value.

This function behaves the same as ff_amf_read_string except that it does not expect the AMF type prepended to the actual data. Appends a trailing null byte to output string in order to ease later parsing.

Parameters

[in,out]	gbc	GetByteContext initialized with AMF-formatted data
[out]	str	read string
[in]	strsize	buffer size available to store the read string
[out]	length	read string length

Returns: 0 on success or an AVERROR code on failure

Definition at line 102 of file rtmppkt.c.

Referenced by ff_amf_read_string(), and handle_notify().

◆ ff_amf_read_string()

int ff_amf_read_string	(	GetByteContext *	gbc,
		uint8_t *	str,
		int	strsize,
		int *	length
	)

Read AMF string value.

Appends a trailing null byte to output string in order to ease later parsing.

Parameters

[in,out]	gbc	GetByteContext initialized with AMF-formatted data
[out]	str	read string
[in]	strsize	buffer size available to store the read string
[out]	length	read string length

Returns: 0 on success or an AVERROR code on failure

Definition at line 120 of file rtmppkt.c.

Referenced by handle_notify(), read_connect(), read_number_result(), rtmp_send_packet(), rtmp_write(), and send_invoke_response().

◆ ff_amf_read_null()

int ff_amf_read_null ( GetByteContext * gbc )

Read AMF NULL value.

Parameters

[in,out] gbc GetByteContext initialized with AMF-formatted data

Returns: 0 on success or an AVERROR code on failure

Definition at line 128 of file rtmppkt.c.

Referenced by read_number_result(), and send_invoke_response().

◆ ff_rtmp_check_alloc_array()

int ff_rtmp_check_alloc_array	(	RTMPPacket **	prev_pkt,
		int *	nb_prev_pkt,
		int	channel
	)

Enlarge the prev_pkt array to fit the given channel.

Parameters

prev_pkt	array with previously sent packet headers
nb_prev_pkt	number of allocated elements in prev_pkt
channel	the channel number that needs to be allocated

Definition at line 135 of file rtmppkt.c.

Referenced by ff_rtmp_packet_write(), rtmp_packet_read_one_chunk(), and rtmp_write().

◆ ff_rtmp_packet_read()

int ff_rtmp_packet_read	(	URLContext *	h,
		RTMPPacket *	p,
		int	chunk_size,
		RTMPPacket **	prev_pkt,
		int *	nb_prev_pkt
	)

Read RTMP packet sent by the server.

Parameters

h	reader context
p	packet
chunk_size	current chunk size
prev_pkt	previously read packet headers for all channels (may be needed for restoring incomplete packet header)
nb_prev_pkt	number of allocated elements in prev_pkt

Returns: number of bytes read on success, negative value otherwise

Definition at line 156 of file rtmppkt.c.

Referenced by get_packet(), and read_connect().

◆ rtmp_packet_read_one_chunk()

static int rtmp_packet_read_one_chunk	(	URLContext *	h,
		RTMPPacket *	p,
		int	chunk_size,
		RTMPPacket **	prev_pkt_ptr,
		int *	nb_prev_pkt,
		uint8_t	hdr
	)

static

Definition at line 168 of file rtmppkt.c.

Referenced by ff_rtmp_packet_read_internal().

◆ ff_rtmp_packet_read_internal()

int ff_rtmp_packet_read_internal	(	URLContext *	h,
		RTMPPacket *	p,
		int	chunk_size,
		RTMPPacket **	prev_pkt,
		int *	nb_prev_pkt,
		uint8_t	c
	)

Read internal RTMP packet sent by the server.

Parameters

h	reader context
p	packet
chunk_size	current chunk size
prev_pkt	previously read packet headers for all channels (may be needed for restoring incomplete packet header)
nb_prev_pkt	number of allocated elements in prev_pkt
c	the first byte already read

Returns: number of bytes read on success, negative value otherwise

Definition at line 295 of file rtmppkt.c.

Referenced by ff_rtmp_packet_read(), and rtmp_write().

◆ ff_rtmp_packet_write()

int ff_rtmp_packet_write	(	URLContext *	h,
		RTMPPacket *	p,
		int	chunk_size,
		RTMPPacket **	prev_pkt,
		int *	nb_prev_pkt
	)

Send RTMP packet to the server.

Parameters

h	reader context
p	packet to send
chunk_size	current chunk size
prev_pkt	previously sent packet headers for all channels (may be used for packet header compressing)
nb_prev_pkt	number of allocated elements in prev_pkt

Returns: number of bytes written on success, negative value otherwise

Definition at line 310 of file rtmppkt.c.

Referenced by handle_chunk_size(), read_connect(), rtmp_send_packet(), send_invoke_response(), write_begin(), and write_status().

◆ ff_rtmp_packet_create()

int ff_rtmp_packet_create	(	RTMPPacket *	pkt,
		int	channel_id,
		RTMPPacketType	type,
		int	timestamp,
		int	size
	)

Create new RTMP packet with given attributes.

Parameters

pkt	packet
channel_id	packet channel ID
type	packet type
timestamp	packet timestamp
size	packet size

Returns: zero on success, negative value otherwise

Definition at line 413 of file rtmppkt.c.

Referenced by gen_buffer_time(), gen_bytes_read(), gen_check_bw(), gen_connect(), gen_create_stream(), gen_delete_stream(), gen_fcpublish_stream(), gen_fcsubscribe_stream(), gen_fcunpublish_stream(), gen_get_stream_length(), gen_pause(), gen_play(), gen_pong(), gen_publish(), gen_release_stream(), gen_seek(), gen_swf_verification(), gen_window_ack_size(), read_connect(), rtmp_packet_read_one_chunk(), rtmp_write(), send_invoke_response(), write_begin(), and write_status().

◆ ff_rtmp_packet_destroy()

void ff_rtmp_packet_destroy ( RTMPPacket * pkt )

Free RTMP packet.

Parameters

pkt packet

Definition at line 431 of file rtmppkt.c.

Referenced by gen_connect(), get_packet(), read_connect(), rtmp_close(), rtmp_packet_read_one_chunk(), rtmp_send_packet(), rtmp_write(), send_invoke_response(), write_begin(), and write_status().

◆ amf_tag_skip()

static int amf_tag_skip ( GetByteContext * gb )

static

Definition at line 439 of file rtmppkt.c.

Referenced by amf_get_field_value2(), and ff_amf_tag_size().

◆ ff_amf_tag_size()

int ff_amf_tag_size	(	const uint8_t *	data,
		const uint8_t *	data_end
	)

Calculate number of bytes taken by first AMF entry in data.

Parameters

data	input data
data_end	input buffer end

Returns: number of bytes used by first AMF entry

Definition at line 492 of file rtmppkt.c.

Referenced by handle_invoke_status(), and handle_notify().

◆ amf_get_field_value2()

static int amf_get_field_value2	(	GetByteContext *	gb,
		const uint8_t *	name,
		uint8_t *	dst,
		int	dst_size
	)

static

Definition at line 509 of file rtmppkt.c.

Referenced by ff_amf_get_field_value().

◆ ff_amf_get_field_value()

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
	)

Retrieve value of given AMF object field in string form.

Parameters

data	AMF object data
data_end	input buffer end
name	name of field to retrieve
dst	buffer for storing result
dst_size	output buffer size

Returns: 0 if search and retrieval succeeded, negative value otherwise

Definition at line 560 of file rtmppkt.c.

Referenced by handle_invoke_error(), handle_invoke_status(), and read_connect().

◆ ff_amf_match_string()

int ff_amf_match_string	(	const uint8_t *	data,
		int	size,
		const char *	str
	)

Match AMF string with a NULL-terminated string.

Returns: 0 if the strings do not match.

Definition at line 692 of file rtmppkt.c.

Referenced by handle_invoke().

Functions

Function Documentation

◆ ff_amf_write_bool()

◆ ff_amf_write_number()

◆ ff_amf_write_array_start()

◆ ff_amf_write_string()

◆ ff_amf_write_string2()

◆ ff_amf_write_null()

◆ ff_amf_write_object_start()

◆ ff_amf_write_field_name()

◆ ff_amf_write_object_end()

◆ ff_amf_read_number()

◆ ff_amf_get_string()

◆ ff_amf_read_string()

◆ ff_amf_read_null()

◆ ff_rtmp_check_alloc_array()

◆ ff_rtmp_packet_read()

◆ rtmp_packet_read_one_chunk()

◆ ff_rtmp_packet_read_internal()

◆ ff_rtmp_packet_write()

◆ ff_rtmp_packet_create()

◆ ff_rtmp_packet_destroy()

◆ amf_tag_skip()

◆ ff_amf_tag_size()

◆ amf_get_field_value2()

◆ ff_amf_get_field_value()

◆ ff_amf_match_string()