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mpv/libmpdemux/asf_mmst_streaming.c

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// mmst implementation taken from the xine-mms plugin made by majormms (http://geocities.com/majormms/)
//
// ported to mplayer by Abhijeet Phatak <abhijeetphatak@yahoo.com>
// date : 16 April 2002
//
// information about the mms protocol can be find at http://get.to/sdp
//
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include "config.h"
#include "url.h"
#include "asf.h"
#include "stream.h"
#include "network.h"
int data_length = 0;
int packet_length1;
int media_padding;
int to_skip = 0;
#include <inttypes.h>
#define BUF_SIZE 102400
int checknum =1;
typedef struct
{
uint8_t buf[BUF_SIZE];
int num_bytes;
} command_t;
int seq_num;
int num_stream_ids;
int stream_ids[20];
int output_fh;
static int get_data (int s, char *buf, size_t count);
int store_data(int s, int size, char *buffer)
{
// printf("data_length %d, media_padding %d, size %d \n", data_length, media_padding, size );
if(data_length >= size)
{
if (!get_data (s, buffer, size))
{
printf ("media data read failed\n");
return 0;
}
data_length -= size;
return size;
}
else
{
int temp_size, media_temp_padding;
if(data_length)
{
if (!get_data (s, buffer, data_length))
{
printf ("media data read failed\n");
return 0;
}
}
if(media_padding)
{
if(media_padding > size - data_length)
{
memset(buffer+data_length,0,(size - data_length));
media_padding -= (size - data_length);
data_length = 0;
return size;
}
else
{
memset(buffer+data_length,0,media_padding);
media_temp_padding = media_padding;
media_padding = 0;
temp_size =data_length;
data_length = 0;
return (temp_size + media_temp_padding);
}
}
temp_size = data_length;
data_length = 0;
return temp_size;
}
}
static void put_32 (command_t *cmd, uint32_t value)
{
cmd->buf[cmd->num_bytes ] = value % 256;
value = value >> 8;
cmd->buf[cmd->num_bytes+1] = value % 256 ;
value = value >> 8;
cmd->buf[cmd->num_bytes+2] = value % 256 ;
value = value >> 8;
cmd->buf[cmd->num_bytes+3] = value % 256 ;
cmd->num_bytes += 4;
}
static uint32_t get_32 (unsigned char *cmd, int offset)
{
uint32_t ret;
ret = cmd[offset] ;
ret |= cmd[offset+1]<<8 ;
ret |= cmd[offset+2]<<16 ;
ret |= cmd[offset+3]<<24 ;
return ret;
}
static void send_command (int s, int command, uint32_t switches,
uint32_t extra, int length,
char *data)
{
command_t cmd;
int len8;
len8 = (length + (length%8)) / 8;
cmd.num_bytes = 0;
put_32 (&cmd, 0x00000001); /* start sequence */
put_32 (&cmd, 0xB00BFACE); /* #-)) */
put_32 (&cmd, length + 32);
put_32 (&cmd, 0x20534d4d); /* protocol type "MMS " */
put_32 (&cmd, len8 + 4);
put_32 (&cmd, seq_num);
seq_num++;
put_32 (&cmd, 0x0); /* unknown */
put_32 (&cmd, 0x0);
put_32 (&cmd, len8+2);
put_32 (&cmd, 0x00030000 | command); /* dir | command */
put_32 (&cmd, switches);
put_32 (&cmd, extra);
memcpy (&cmd.buf[48], data, length);
if (write (s, cmd.buf, length+48) != (length+48)) {
printf ("write error\n");
}
}
static void string_utf16(char *dest, char *src, int len)
{
int i;
memset (dest, 0, 1000);
for (i=0; i<len; i++) {
dest[i*2] = src[i];
dest[i*2+1] = 0;
}
dest[i*2] = 0;
dest[i*2+1] = 0;
}
static void get_answer (int s)
{
char data[BUF_SIZE];
int command = 0x1b;
while (command == 0x1b) {
int len;
len = read (s, data, BUF_SIZE) ;
if (!len) {
printf ("\nalert! eof\n");
return;
}
command = get_32 (data, 36) & 0xFFFF;
if (command == 0x1b)
send_command (s, 0x1b, 0, 0, 0, data);
}
}
static int get_data (int s, char *buf, size_t count)
{
ssize_t len, total;
total = 0;
while (total < count) {
len = read (s, &buf[total], count-total);
if (len<0) {
perror ("read error:");
return 0;
}
total += len;
if (len != 0) {
// printf ("[%d/%d]", total, count);
fflush (stdout);
}
}
return 1;
}
static int get_header (int s, uint8_t *header, streaming_ctrl_t *streaming_ctrl)
{
unsigned char pre_header[8];
int header_len,i ;
header_len = 0;
while (1) {
if (!get_data (s, pre_header, 8)) {
printf ("pre-header read failed\n");
return 0;
}
if (pre_header[4] == 0x02) {
int packet_len;
packet_len = (pre_header[7] << 8 | pre_header[6]) - 8;
// printf ("asf header packet detected, len=%d\n", packet_len);
if (!get_data (s, &header[header_len], packet_len)) {
printf ("header data read failed\n");
return 0;
}
header_len += packet_len;
if ( (header[header_len-1] == 1) && (header[header_len-2]==1)) {
if( streaming_bufferize( streaming_ctrl, header, header_len )<0 ) {
return -1;
}
// printf ("get header packet finished\n");
return (header_len);
}
} else {
char packet_len;
int command;
char data[BUF_SIZE];
if (!get_data (s, &packet_len, 4)) {
printf ("packet_len read failed\n");
return 0;
}
packet_len = get_32 (&packet_len, 0) + 4;
// printf ("command packet detected, len=%d\n", packet_len);
if (!get_data (s, data, packet_len)) {
printf ("command data read failed\n");
return 0;
}
command = get_32 (data, 24) & 0xFFFF;
// printf ("command: %02x\n", command);
if (command == 0x1b)
send_command (s, 0x1b, 0, 0, 0, data);
}
// printf ("get header packet succ\n");
}
}
int interp_header (uint8_t *header, int header_len)
{
int i;
int packet_length;
/*
* parse header
*/
i = 30;
while (i<header_len) {
uint64_t guid_1, guid_2, length;
guid_2 = (uint64_t)header[i] | ((uint64_t)header[i+1]<<8)
| ((uint64_t)header[i+2]<<16) | ((uint64_t)header[i+3]<<24)
| ((uint64_t)header[i+4]<<32) | ((uint64_t)header[i+5]<<40)
| ((uint64_t)header[i+6]<<48) | ((uint64_t)header[i+7]<<56);
i += 8;
guid_1 = (uint64_t)header[i] | ((uint64_t)header[i+1]<<8)
| ((uint64_t)header[i+2]<<16) | ((uint64_t)header[i+3]<<24)
| ((uint64_t)header[i+4]<<32) | ((uint64_t)header[i+5]<<40)
| ((uint64_t)header[i+6]<<48) | ((uint64_t)header[i+7]<<56);
i += 8;
// printf ("guid found: %016llx%016llx\n", guid_1, guid_2);
length = (uint64_t)header[i] | ((uint64_t)header[i+1]<<8)
| ((uint64_t)header[i+2]<<16) | ((uint64_t)header[i+3]<<24)
| ((uint64_t)header[i+4]<<32) | ((uint64_t)header[i+5]<<40)
| ((uint64_t)header[i+6]<<48) | ((uint64_t)header[i+7]<<56);
i += 8;
if ( (guid_1 == 0x6cce6200aa00d9a6) && (guid_2 == 0x11cf668e75b22630) ) {
printf ("header object\n");
} else if ((guid_1 == 0x6cce6200aa00d9a6) && (guid_2 == 0x11cf668e75b22636)) {
printf ("data object\n");
} else if ((guid_1 == 0x6553200cc000e48e) && (guid_2 == 0x11cfa9478cabdca1)) {
packet_length = get_32(header, i+92-24);
printf ("file object, packet length = %d (%d)\n",
packet_length, get_32(header, i+96-24));
} else if ((guid_1 == 0x6553200cc000e68e) && (guid_2 == 0x11cfa9b7b7dc0791)) {
int stream_id = header[i+48] | header[i+49] << 8;
printf ("stream object, stream id: %d\n", stream_id);
stream_ids[num_stream_ids] = stream_id;
num_stream_ids++;
} else {
printf ("unknown object\n");
}
// printf ("length : %lld\n", length);
i += length-24;
}
return packet_length;
}
static int get_media_packet (int s, int padding, char *buffer, int size)
{
unsigned char pre_header[8];
char data[BUF_SIZE];
int CheckInnerData = 1;
int CheckOuterData = 1;
while(CheckOuterData)
{
int a;
if(media_padding ==0 && data_length == 0)
{
while(CheckInnerData)
{
if (!get_data (s, pre_header, 8)) {
printf ("pre-header read failed\n");
return 0;
}
if (pre_header[4] == 0x04)
{
data_length = (pre_header[7] << 8 | pre_header[6]) - 8;
media_padding = packet_length1 - data_length;
if(to_skip)
{
a = store_data(s, size - to_skip, buffer + to_skip);
to_skip = 0;
}
else
{
a = store_data(s, size, buffer);
}
// printf("a inner %d \n", size);
return size;
}
else
{
int command;
char packet_len;
if (!get_data (s, &packet_len, 4))
{
printf ("packet_len read failed\n");
return 0;
}
packet_len = get_32 (&packet_len, 0) + 4;
if (!get_data (s, data, packet_len))
{
printf ("command data read failed\n");
return 0;
}
if ( (pre_header[7] != 0xb0) || (pre_header[6] != 0x0b) || (pre_header[5] != 0xfa) || (pre_header[4] != 0xce) )
{
printf ("missing signature\n");
exit (1);
}
command = get_32 (data, 24) & 0xFFFF;
if (command == 0x1b)
{
send_command (s, 0x1b, 0, 0, 0, data);
}
else if (command == 0x1e)
{
printf ("everything done. Thank you for downloading a media file containing proprietary and patentend technology.\n");
return 0;
}
else if (command != 0x05)
{
printf ("unknown command %02x\n", command);
exit (1);
}
}
}
}
if(to_skip)
{
a = store_data(s, size - to_skip, buffer+to_skip );
to_skip = 0;
}
else
{
a = store_data(s, size, buffer);
}
if(a == size)
{
// printf("a outer %d", a );
return a;
}
else
to_skip = a;
}
}
int
asf_mmst_streaming_read( int fd, char *buffer, int size, streaming_ctrl_t *stream_ctrl )
{
int len = 0;
if( stream_ctrl->buffer_size!=0 ) {
int buffer_len = stream_ctrl->buffer_size-stream_ctrl->buffer_pos;
len = (size<buffer_len)?size:buffer_len;
memcpy( buffer, (stream_ctrl->buffer)+(stream_ctrl->buffer_pos), len );
stream_ctrl->buffer_pos += len;
if( stream_ctrl->buffer_pos>=stream_ctrl->buffer_size ) {
free( stream_ctrl->buffer );
stream_ctrl->buffer = NULL;
stream_ctrl->buffer_size = 0;
stream_ctrl->buffer_pos = 0;
}
}
if( len<size ) {
int ret;
ret = get_media_packet( fd, size - len, buffer+len, size-len );
if( ret<0 ) {
printf("nop_streaming_read error : %s\n",strerror(errno));
}
len += ret;
//printf("read %d bytes from network\n", len );
}
return len;
}
int
asf_mmst_streaming_seek( int fd, off_t pos, streaming_ctrl_t *streaming_ctrl )
{
return -1;
}
int asf_mmst_streaming_start(stream_t *stream)
{
char str[1024];
char data[1024];
uint8_t asf_header[8192];
int asf_header_len;
int len, i, packet_length;
char host[256];
char *path;
URL_t *url1 = stream->streaming_ctrl->url;
int s = stream->fd;
/* parse url */
path = strchr(url1->file,'/') + 1;
url1->port=1755;
s = connect2Server( url1->hostname, url1->port );
printf ("connected\n");
/*
* Send the initial connect info including player version no. Client GUID (random) and the host address being connected to.
* This command is sent at the very start of protocol initiation. It sends local information to the serve
* cmd 1 0x01
* */
sprintf (str, "\034\003NSPlayer/7.0.0.1956; {33715801-BAB3-9D85-24E9-03B90328270A}; Host: %s", host);
string_utf16 (data, str, strlen(str)+2);
// send_command(s, commandno ....)
send_command (s, 1, 0, 0x0004000b, strlen(str) * 2+8, data);
len = read (s, data, BUF_SIZE) ;
/*This sends details of the local machine IP address to a Funnel system at the server.
* Also, the TCP or UDP transport selection is sent.
*
* here 192.168.0.129 is local ip address TCP/UDP states the tronsport we r using
* and 1037 is the local TCP or UDP socket number
* cmd 2 0x02
* */
string_utf16 (&data[8], "\002\000\\\\192.168.0.1\\TCP\\1037\0000",
28);
memset (data, 0, 8);
send_command (s, 2, 0, 0, 28*2+8, data);
len = read (s, data, BUF_SIZE) ;
/* This command sends file path (at server) and file name request to the server.
* 0x5 */
string_utf16 (&data[8], path, strlen(path));
memset (data, 0, 8);
send_command (s, 5, 0, 0, strlen(path)*2+12, data);
get_answer (s);
/* The ASF header chunk request. Includes ?session' variable for pre header value.
* After this command is sent,
* the server replies with 0x11 command and then the header chunk with header data follows.
* 0x15 */
memset (data, 0, 40);
data[32] = 2;
send_command (s, 0x15, 1, 0, 40, data);
num_stream_ids = 0;
/* get_headers(s, asf_header); */
asf_header_len = get_header (s, asf_header, stream->streaming_ctrl);
// printf("---------------------------------- asf_header %d\n",asf_header);
packet_length = interp_header (asf_header, asf_header_len);
/*
* This command is the media stream MBR selector. Switches are always 6 bytes in length.
* After all switch elements, data ends with bytes [00 00] 00 20 ac 40 [02].
* Where:
* [00 00] shows 0x61 0x00 (on the first 33 sent) or 0xff 0xff for ASF files, and with no ending data for WMV files.
* It is not yet understood what all this means.
* And the last [02] byte is probably the header ?session' value.
*
* 0x33 */
memset (data, 0, 40);
for (i=1; i<num_stream_ids; i++) {
data [ (i-1) * 6 + 2 ] = 0xFF;
data [ (i-1) * 6 + 3 ] = 0xFF;
data [ (i-1) * 6 + 4 ] = stream_ids[i];
data [ (i-1) * 6 + 5 ] = 0x00;
}
send_command (s, 0x33, num_stream_ids, 0xFFFF | stream_ids[0] << 16, (num_stream_ids-1)*6+2 , data);
get_answer (s);
/* Start sending file from packet xx.
* This command is also used for resume downloads or requesting a lost packet.
* Also used for seeking by sending a play point value which seeks to the media time point.
* Includes ?session' value in pre header and the maximum media stream time.
* 0x07 */
memset (data, 0, 40);
for (i=8; i<16; i++)
data[i] = 0xFF;
data[20] = 0x04;
send_command (s, 0x07, 1, 0xFFFF | stream_ids[0] << 16, 24, data);
stream->fd = s;
stream->streaming_ctrl->streaming_read = asf_mmst_streaming_read;
stream->streaming_ctrl->streaming_seek = asf_mmst_streaming_seek;
stream->streaming_ctrl->buffering = 1;
stream->streaming_ctrl->status = streaming_playing_e;
stream->streaming_ctrl->buffering = 1;
packet_length1 = packet_length;
return 0;
}