mmst.c File Reference

#include "avformat.h"
#include "mms.h"
#include "avio_internal.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mem.h"
#include "libavcodec/bytestream.h"
#include "network.h"
#include "url.h"

Go to the source code of this file.

Data Structures
struct	MMSTContext

Macros
#define	LOCAL_ADDRESS   0xc0a80081
#define	LOCAL_PORT   1037

Enumerations
enum	MMSCSPacketType {   CS_PKT_INITIAL = 0x01, CS_PKT_PROTOCOL_SELECT = 0x02, CS_PKT_MEDIA_FILE_REQUEST = 0x05, CS_PKT_START_FROM_PKT_ID = 0x07,   CS_PKT_STREAM_PAUSE = 0x09, CS_PKT_STREAM_CLOSE = 0x0d, CS_PKT_MEDIA_HEADER_REQUEST = 0x15, CS_PKT_TIMING_DATA_REQUEST = 0x18,   CS_PKT_USER_PASSWORD = 0x1a, CS_PKT_KEEPALIVE = 0x1b, CS_PKT_STREAM_ID_REQUEST = 0x33 }
	Client to server packet types. More...
enum	MMSSCPacketType {   SC_PKT_CLIENT_ACCEPTED = 0x01, SC_PKT_PROTOCOL_ACCEPTED = 0x02, SC_PKT_PROTOCOL_FAILED = 0x03, SC_PKT_MEDIA_PKT_FOLLOWS = 0x05,   SC_PKT_MEDIA_FILE_DETAILS = 0x06, SC_PKT_HEADER_REQUEST_ACCEPTED = 0x11, SC_PKT_TIMING_TEST_REPLY = 0x15, SC_PKT_PASSWORD_REQUIRED = 0x1a,   SC_PKT_KEEPALIVE = 0x1b, SC_PKT_STREAM_STOPPED = 0x1e, SC_PKT_STREAM_CHANGING = 0x20, SC_PKT_STREAM_ID_ACCEPTED = 0x21,   SC_PKT_CANCEL = -1, SC_PKT_NO_DATA = -2, SC_PKT_ASF_HEADER = 0x010000, SC_PKT_ASF_MEDIA = 0x010001 }
	Server to client packet types. More...

Functions
static void	start_command_packet (MMSTContext *mmst, MMSCSPacketType packet_type)
	Create MMST command packet header. More...
static void	insert_command_prefixes (MMSContext *mms, uint32_t prefix1, uint32_t prefix2)
	Add prefixes to MMST command packet. More...
static int	send_command_packet (MMSTContext *mmst)
	Send a prepared MMST command packet. More...
static int	mms_put_utf16 (MMSContext *mms, const uint8_t *src)
static int	send_time_test_data (MMSTContext *mmst)
static int	send_protocol_select (MMSTContext *mmst)
static int	send_media_file_request (MMSTContext *mmst)
static void	handle_packet_stream_changing_type (MMSTContext *mmst)
static int	send_keepalive_packet (MMSTContext *mmst)
static void	pad_media_packet (MMSContext *mms)
	Pad media packets smaller than max_packet_size and/or adjust read position after a seek. More...
static MMSSCPacketType	get_tcp_server_response (MMSTContext *mmst)
	Read incoming MMST media, header or command packet. More...
static int	mms_safe_send_recv (MMSTContext *mmst, int(*send_fun)(MMSTContext *mmst), const MMSSCPacketType expect_type)
static int	send_media_header_request (MMSTContext *mmst)
static int	send_startup_packet (MMSTContext *mmst)
	Send the initial handshake. More...
static int	send_stream_selection_request (MMSTContext *mmst)
	Send MMST stream selection command based on the AVStream->discard values. More...
static int	send_close_packet (MMSTContext *mmst)
static int	mms_close (URLContext *h)
	Close the MMSH/MMST connection. More...
static int	send_media_packet_request (MMSTContext *mmst)
static void	clear_stream_buffers (MMSContext *mms)
static int	mms_open (URLContext *h, const char *uri, int flags)
static int	mms_read (URLContext *h, uint8_t *buf, int size)
	Read ASF data through the protocol. More...

Variables
const URLProtocol	ff_mmst_protocol

Macro Definition Documentation

LOCAL_ADDRESS

#define LOCAL_ADDRESS   0xc0a80081

Definition at line 40 of file mmst.c.

LOCAL_PORT

#define LOCAL_PORT   1037

Definition at line 41 of file mmst.c.

Enumeration Type Documentation

MMSCSPacketType

enum MMSCSPacketType

Client to server packet types.

Enumerator
CS_PKT_INITIAL
CS_PKT_PROTOCOL_SELECT
CS_PKT_MEDIA_FILE_REQUEST
CS_PKT_START_FROM_PKT_ID
CS_PKT_STREAM_PAUSE
CS_PKT_STREAM_CLOSE
CS_PKT_MEDIA_HEADER_REQUEST
CS_PKT_TIMING_DATA_REQUEST
CS_PKT_USER_PASSWORD
CS_PKT_KEEPALIVE
CS_PKT_STREAM_ID_REQUEST

Definition at line 43 of file mmst.c.

MMSSCPacketType

enum MMSSCPacketType

Server to client packet types.

Enumerator
SC_PKT_CLIENT_ACCEPTED	Control packets.
SC_PKT_PROTOCOL_ACCEPTED
SC_PKT_PROTOCOL_FAILED
SC_PKT_MEDIA_PKT_FOLLOWS
SC_PKT_MEDIA_FILE_DETAILS
SC_PKT_HEADER_REQUEST_ACCEPTED
SC_PKT_TIMING_TEST_REPLY
SC_PKT_PASSWORD_REQUIRED
SC_PKT_KEEPALIVE
SC_PKT_STREAM_STOPPED
SC_PKT_STREAM_CHANGING
SC_PKT_STREAM_ID_ACCEPTED
SC_PKT_CANCEL	Pseudo packets.
SC_PKT_NO_DATA
SC_PKT_ASF_HEADER	Data packets.
SC_PKT_ASF_MEDIA

Definition at line 58 of file mmst.c.

Function Documentation

start_command_packet()

static void start_command_packet ( MMSTContext *  mmst, MMSCSPacketType  packet_type  )

static

Create MMST command packet header.

Definition at line 100 of file mmst.c.

Referenced by send_close_packet(), send_keepalive_packet(), send_media_file_request(), send_media_header_request(), send_media_packet_request(), send_protocol_select(), send_startup_packet(), send_stream_selection_request(), and send_time_test_data().

insert_command_prefixes()

static void insert_command_prefixes ( MMSContext *  mms, uint32_t  prefix1, uint32_t  prefix2  )

static

Add prefixes to MMST command packet.

Definition at line 118 of file mmst.c.

Referenced by send_close_packet(), send_keepalive_packet(), send_media_file_request(), send_media_header_request(), send_media_packet_request(), send_protocol_select(), send_startup_packet(), and send_time_test_data().

send_command_packet()

static int send_command_packet ( MMSTContext *  mmst )

static

Send a prepared MMST command packet.

Definition at line 126 of file mmst.c.

Referenced by send_close_packet(), send_keepalive_packet(), send_media_file_request(), send_media_header_request(), send_media_packet_request(), send_protocol_select(), send_startup_packet(), send_stream_selection_request(), and send_time_test_data().

mms_put_utf16()

static int mms_put_utf16 ( MMSContext *  mms, const uint8_t *  src  )

static

Definition at line 155 of file mmst.c.

Referenced by send_media_file_request(), send_protocol_select(), and send_startup_packet().

send_time_test_data()

static int send_time_test_data ( MMSTContext *  mmst )

static

Definition at line 170 of file mmst.c.

Referenced by mms_open().

send_protocol_select()

static int send_protocol_select ( MMSTContext *  mmst )

static

Definition at line 177 of file mmst.c.

Referenced by mms_open().

send_media_file_request()

static int send_media_file_request ( MMSTContext *  mmst )

static

Definition at line 201 of file mmst.c.

Referenced by mms_open().

handle_packet_stream_changing_type()

static void handle_packet_stream_changing_type ( MMSTContext *  mmst )

static

Definition at line 215 of file mmst.c.

Referenced by get_tcp_server_response().

send_keepalive_packet()

static int send_keepalive_packet ( MMSTContext *  mmst )

static

Definition at line 225 of file mmst.c.

Referenced by get_tcp_server_response().

pad_media_packet()

static void pad_media_packet ( MMSContext *  mms )

static

Pad media packets smaller than max_packet_size and/or adjust read position after a seek.

Definition at line 235 of file mmst.c.

Referenced by get_tcp_server_response().

get_tcp_server_response()

static MMSSCPacketType get_tcp_server_response ( MMSTContext *  mmst )

static

Read incoming MMST media, header or command packet.

Definition at line 245 of file mmst.c.

Referenced by mms_safe_send_recv().

mms_safe_send_recv()

static int mms_safe_send_recv ( MMSTContext *  mmst, int(*)(MMSTContext *mmst)  send_fun, const MMSSCPacketType  expect_type  )

static

Definition at line 379 of file mmst.c.

Referenced by mms_open(), and mms_read().

send_media_header_request()

static int send_media_header_request ( MMSTContext *  mmst )

static

Definition at line 402 of file mmst.c.

Referenced by mms_open().

send_startup_packet()

static int send_startup_packet ( MMSTContext *  mmst )

static

Send the initial handshake.

Definition at line 424 of file mmst.c.

Referenced by mms_open().

send_stream_selection_request()

static int send_stream_selection_request ( MMSTContext *  mmst )

static

Send MMST stream selection command based on the AVStream->discard values.

Definition at line 446 of file mmst.c.

Referenced by mms_open().

send_close_packet()

static int send_close_packet ( MMSTContext *  mmst )

static

Definition at line 461 of file mmst.c.

Referenced by mms_close().

mms_close()

static int mms_close ( URLContext *  h )

static

Close the MMSH/MMST connection.

Definition at line 470 of file mmst.c.

Referenced by mms_open().

send_media_packet_request()

static int send_media_packet_request ( MMSTContext *  mmst )

static

Definition at line 486 of file mmst.c.

Referenced by mms_open().

clear_stream_buffers()

static void clear_stream_buffers ( MMSContext *  mms )

static

Definition at line 505 of file mmst.c.

Referenced by mms_open().

mms_open()

static int mms_open ( URLContext *  h, const char *  uri, int  flags  )

static

Definition at line 511 of file mmst.c.

mms_read()

static int mms_read ( URLContext *  h, uint8_t *  buf, int  size  )

static

Read ASF data through the protocol.

Definition at line 591 of file mmst.c.

Variable Documentation

ff_mmst_protocol

const URLProtocol ff_mmst_protocol

Initial value:

= {
    .name           = "mmst",
    .url_open       = mms_open,
    .url_read       = mms_read,
    .url_close      = mms_close,
    .priv_data_size = sizeof(MMSTContext),
    .flags          = URL_PROTOCOL_FLAG_NETWORK,
}

Definition at line 632 of file mmst.c.