mmsh.c
上传用户:riyaled888
上传日期:2009-03-27
资源大小:7338k
文件大小:23k
- /*****************************************************************************
- * mmsh.c:
- *****************************************************************************
- * Copyright (C) 2001, 2002 VideoLAN
- * $Id: mmsh.c 8936 2004-10-06 14:15:03Z hartman $
- *
- * Authors: Laurent Aimar <fenrir@via.ecp.fr>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
- *****************************************************************************/
- /*****************************************************************************
- * Preamble
- *****************************************************************************/
- #include <stdlib.h>
- #include <vlc/vlc.h>
- #include <vlc/input.h>
- #include "vlc_playlist.h"
- #include "network.h"
- #include "asf.h"
- #include "buffer.h"
- #include "mms.h"
- #include "mmsh.h"
- /* TODO:
- * - http_proxy
- * - authentication
- */
- /*****************************************************************************
- * Local prototypes
- *****************************************************************************/
- int E_(MMSHOpen) ( access_t * );
- void E_(MMSHClose) ( access_t * );
- static int Read( access_t *, uint8_t *, int );
- static int ReadRedirect( access_t *, uint8_t *, int );
- static int Seek( access_t *, int64_t );
- static int Control( access_t *, int, va_list );
- static int Describe( access_t *, char **ppsz_location );
- static int Start( access_t *, int64_t );
- static void Stop( access_t * );
- static int GetPacket( access_t *, chunk_t * );
- /****************************************************************************
- * Open: connect to ftp server and ask for file
- ****************************************************************************/
- int E_(MMSHOpen)( access_t *p_access )
- {
- access_sys_t *p_sys;
- char *psz_location = NULL;
- /* init p_sys */
- /* Set up p_access */
- p_access->pf_read = Read;
- p_access->pf_block = NULL;
- p_access->pf_control = Control;
- p_access->pf_seek = Seek;
- p_access->info.i_update = 0;
- p_access->info.i_size = 0;
- p_access->info.i_pos = 0;
- p_access->info.b_eof = VLC_FALSE;
- p_access->info.i_title = 0;
- p_access->info.i_seekpoint = 0;
- p_access->p_sys = p_sys = malloc( sizeof( access_sys_t ) );
- memset( p_sys, 0, sizeof( access_sys_t ) );
- p_sys->i_proto= MMS_PROTO_HTTP;
- p_sys->fd = -1;
- p_sys->i_start= 0;
- /* open a tcp connection */
- vlc_UrlParse( &p_sys->url, p_access->psz_path, 0 );
- if( p_sys->url.psz_host == NULL || *p_sys->url.psz_host == ' ' )
- {
- msg_Err( p_access, "invalid host" );
- vlc_UrlClean( &p_sys->url );
- free( p_sys );
- return VLC_EGENERIC;
- }
- if( p_sys->url.i_port <= 0 )
- p_sys->url.i_port = 80;
- if( Describe( p_access, &psz_location ) )
- {
- vlc_UrlClean( &p_sys->url );
- free( p_sys );
- return VLC_EGENERIC;
- }
- /* Handle redirection */
- if( psz_location && *psz_location )
- {
- playlist_t * p_playlist = vlc_object_find( p_access, VLC_OBJECT_PLAYLIST, FIND_PARENT );
- msg_Dbg( p_access, "redirection to %s", psz_location );
- if( !p_playlist )
- {
- msg_Err( p_access, "redirection failed: can't find playlist" );
- free( psz_location );
- return VLC_EGENERIC;
- }
- p_playlist->pp_items[p_playlist->i_index]->b_autodeletion = VLC_TRUE;
- playlist_Add( p_playlist, psz_location, psz_location,
- PLAYLIST_INSERT | PLAYLIST_GO,
- p_playlist->i_index + 1 );
- vlc_object_release( p_playlist );
- free( psz_location );
- p_access->pf_read = ReadRedirect;
- return VLC_SUCCESS;
- }
- /* Start playing */
- if( Start( p_access, 0 ) )
- {
- msg_Err( p_access, "cannot start stream" );
- free( p_sys->p_header );
- vlc_UrlClean( &p_sys->url );
- free( p_sys );
- return VLC_EGENERIC;
- }
- if( !p_sys->b_broadcast )
- {
- p_access->info.i_size = p_sys->asfh.i_file_size;
- }
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * Close: free unused data structures
- *****************************************************************************/
- void E_( MMSHClose )( access_t *p_access )
- {
- access_sys_t *p_sys = p_access->p_sys;
- Stop( p_access );
- free( p_sys );
- }
- /*****************************************************************************
- * Control:
- *****************************************************************************/
- static int Control( access_t *p_access, int i_query, va_list args )
- {
- access_sys_t *p_sys = p_access->p_sys;
- vlc_bool_t *pb_bool;
- int *pi_int;
- int64_t *pi_64;
- switch( i_query )
- {
- /* */
- case ACCESS_CAN_SEEK:
- pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
- *pb_bool = !p_sys->b_broadcast;
- break;
- case ACCESS_CAN_FASTSEEK:
- case ACCESS_CAN_PAUSE:
- case ACCESS_CAN_CONTROL_PACE:
- pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
- *pb_bool = VLC_FALSE;
- break;
- /* */
- case ACCESS_GET_MTU:
- pi_int = (int*)va_arg( args, int * );
- *pi_int = 3 * p_sys->asfh.i_min_data_packet_size;
- break;
- case ACCESS_GET_PTS_DELAY:
- pi_64 = (int64_t*)va_arg( args, int64_t * );
- *pi_64 = (int64_t)var_GetInteger( p_access, "mms-caching" ) * I64C(1000);
- break;
- /* */
- case ACCESS_SET_PAUSE_STATE:
- case ACCESS_GET_TITLE_INFO:
- case ACCESS_SET_TITLE:
- case ACCESS_SET_SEEKPOINT:
- case ACCESS_SET_PRIVATE_ID_STATE:
- return VLC_EGENERIC;
- default:
- msg_Warn( p_access, "unimplemented query in control" );
- return VLC_EGENERIC;
- }
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * Seek: try to go at the right place
- *****************************************************************************/
- static int Seek( access_t *p_access, int64_t i_pos )
- {
- access_sys_t *p_sys = p_access->p_sys;
- chunk_t ck;
- off_t i_offset;
- off_t i_packet;
- msg_Dbg( p_access, "seeking to "I64Fd, i_pos );
- i_packet = ( i_pos - p_sys->i_header ) / p_sys->asfh.i_min_data_packet_size;
- i_offset = ( i_pos - p_sys->i_header ) % p_sys->asfh.i_min_data_packet_size;
- Stop( p_access );
- Start( p_access, i_packet * p_sys->asfh.i_min_data_packet_size );
- while( !p_access->b_die )
- {
- if( GetPacket( p_access, &ck ) )
- break;
- /* skip headers */
- if( ck.i_type != 0x4824 )
- break;
- msg_Warn( p_access, "skipping header" );
- }
- p_access->info.i_pos = i_pos;
- p_access->info.b_eof = VLC_FALSE;
- p_sys->i_packet_used += i_offset;
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * Read:
- *****************************************************************************/
- static int ReadRedirect( access_t *p_access, uint8_t *p, int i_len )
- {
- return 0;
- }
- /*****************************************************************************
- * Read:
- *****************************************************************************/
- static int Read( access_t *p_access, uint8_t *p_buffer, int i_len )
- {
- access_sys_t *p_sys = p_access->p_sys;
- size_t i_copy;
- size_t i_data = 0;
- if( p_access->info.b_eof )
- return 0;
- while( i_data < i_len )
- {
- if( p_access->info.i_pos < p_sys->i_start + p_sys->i_header )
- {
- int i_offset = p_access->info.i_pos - p_sys->i_start;
- i_copy = __MIN( p_sys->i_header - i_offset, i_len - i_data );
- memcpy( &p_buffer[i_data], &p_sys->p_header[i_offset], i_copy );
- i_data += i_copy;
- p_access->info.i_pos += i_copy;
- }
- else if( p_sys->i_packet_used < p_sys->i_packet_length )
- {
- i_copy = __MIN( p_sys->i_packet_length - p_sys->i_packet_used,
- i_len - i_data );
- memcpy( &p_buffer[i_data],
- &p_sys->p_packet[p_sys->i_packet_used],
- i_copy );
- i_data += i_copy;
- p_sys->i_packet_used += i_copy;
- p_access->info.i_pos += i_copy;
- }
- else if( p_sys->i_packet_length > 0 &&
- (int)p_sys->i_packet_used < p_sys->asfh.i_min_data_packet_size )
- {
- i_copy = __MIN( p_sys->asfh.i_min_data_packet_size - p_sys->i_packet_used,
- i_len - i_data );
- memset( &p_buffer[i_data], 0, i_copy );
- i_data += i_copy;
- p_sys->i_packet_used += i_copy;
- p_access->info.i_pos += i_copy;
- }
- else
- {
- chunk_t ck;
- if( GetPacket( p_access, &ck ) )
- {
- if( ck.i_type == 0x4524 && ck.i_sequence != 0 && p_sys->b_broadcast )
- {
- char *psz_location = NULL;
- p_sys->i_start = p_access->info.i_pos;
- msg_Dbg( p_access, "stoping the stream" );
- Stop( p_access );
- msg_Dbg( p_access, "describe the stream" );
- if( Describe( p_access, &psz_location ) )
- {
- msg_Err( p_access, "describe failed" );
- p_access->info.b_eof = VLC_TRUE;
- return 0;
- }
- if( Start( p_access, 0 ) )
- {
- msg_Err( p_access, "Start failed" );
- p_access->info.b_eof = VLC_TRUE;
- return 0;
- }
- }
- else
- {
- p_access->info.b_eof = VLC_TRUE;
- return 0;
- }
- }
- if( ck.i_type != 0x4424 )
- {
- p_sys->i_packet_used = 0;
- p_sys->i_packet_length = 0;
- }
- }
- }
- return( i_data );
- }
- /*****************************************************************************
- * Describe:
- *****************************************************************************/
- static int Describe( access_t *p_access, char **ppsz_location )
- {
- access_sys_t *p_sys = p_access->p_sys;
- char *psz_location = NULL;
- char *psz;
- int i_code;
- /* Reinit context */
- p_sys->b_broadcast = VLC_TRUE;
- p_sys->i_request_context = 1;
- p_sys->i_packet_sequence = 0;
- p_sys->i_packet_used = 0;
- p_sys->i_packet_length = 0;
- p_sys->p_packet = NULL;
- E_( GenerateGuid )( &p_sys->guid );
- if( ( p_sys->fd = net_OpenTCP( p_access, p_sys->url.psz_host,
- p_sys->url.i_port ) ) < 0 )
- {
- msg_Err( p_access, "cannot connect to %s:%d", p_sys->url.psz_host, p_sys->url.i_port );
- goto error;
- }
- /* send first request */
- net_Printf( VLC_OBJECT(p_access), p_sys->fd,
- "GET %s HTTP/1.0rn"
- "Accept: */*rn"
- "User-Agent: NSPlayer/4.1.0.3856rn"
- "Host: %s:%drn"
- "Pragma: no-cache,rate=1.000000,stream-time=0,stream-offset=0:0,request-context=%d,max-duration=0rn"
- "Pragma: xClientGUID={"GUID_FMT"}rn"
- "Connection: Closern",
- ( p_sys->url.psz_path == NULL || *p_sys->url.psz_path == ' ' ) ? "/" : p_sys->url.psz_path,
- p_sys->url.psz_host, p_sys->url.i_port,
- p_sys->i_request_context++,
- GUID_PRINT( p_sys->guid ) );
- if( net_Printf( VLC_OBJECT(p_access), p_sys->fd, "rn" ) < 0 )
- {
- msg_Err( p_access, "failed to send request" );
- goto error;
- }
- /* Receive the http header */
- if( ( psz = net_Gets( VLC_OBJECT(p_access), p_sys->fd ) ) == NULL )
- {
- msg_Err( p_access, "failed to read answer" );
- goto error;
- }
- if( strncmp( psz, "HTTP/1.", 7 ) )
- {
- msg_Err( p_access, "invalid HTTP reply '%s'", psz );
- free( psz );
- goto error;
- }
- i_code = atoi( &psz[9] );
- if( i_code >= 400 )
- {
- msg_Err( p_access, "error: %s", psz );
- free( psz );
- goto error;
- }
- msg_Dbg( p_access, "HTTP reply '%s'", psz );
- free( psz );
- for( ;; )
- {
- char *psz = net_Gets( p_access, p_sys->fd );
- char *p;
- if( psz == NULL )
- {
- msg_Err( p_access, "failed to read answer" );
- goto error;
- }
- if( *psz == ' ' )
- {
- free( psz );
- break;
- }
- if( ( p = strchr( psz, ':' ) ) == NULL )
- {
- msg_Err( p_access, "malformed header line: %s", psz );
- free( psz );
- goto error;
- }
- *p++ = ' ';
- while( *p == ' ' ) p++;
- /* FIXME FIXME test Content-Type to see if it's a plain stream or an
- * asx FIXME */
- if( !strcasecmp( psz, "Pragma" ) )
- {
- if( strstr( p, "features" ) )
- {
- /* FIXME, it is a bit badly done here ..... */
- if( strstr( p, "broadcast" ) )
- {
- msg_Dbg( p_access, "stream type = broadcast" );
- p_sys->b_broadcast = VLC_TRUE;
- }
- else if( strstr( p, "seekable" ) )
- {
- msg_Dbg( p_access, "stream type = seekable" );
- p_sys->b_broadcast = VLC_FALSE;
- }
- else
- {
- msg_Warn( p_access, "unknow stream types (%s)", p );
- p_sys->b_broadcast = VLC_FALSE;
- }
- }
- }
- else if( !strcasecmp( psz, "Location" ) )
- {
- psz_location = strdup( p );
- }
- free( psz );
- }
- /* Handle the redirection */
- if( ( i_code == 301 || i_code == 302 ||
- i_code == 303 || i_code == 307 ) &&
- psz_location && *psz_location )
- {
- msg_Dbg( p_access, "redirection to %s", psz_location );
- net_Close( p_sys->fd ); p_sys->fd = -1;
- *ppsz_location = psz_location;
- return VLC_SUCCESS;
- }
- /* Read the asf header */
- p_sys->i_header = 0;
- p_sys->p_header = NULL;
- for( ;; )
- {
- chunk_t ck;
- if( GetPacket( p_access, &ck ) ||
- ck.i_type != 0x4824 )
- {
- break;
- }
- if( ck.i_data > 0 )
- {
- p_sys->i_header += ck.i_data;
- p_sys->p_header = realloc( p_sys->p_header, p_sys->i_header );
- memcpy( &p_sys->p_header[p_sys->i_header - ck.i_data],
- ck.p_data, ck.i_data );
- }
- }
- msg_Dbg( p_access, "complete header size=%d", p_sys->i_header );
- if( p_sys->i_header <= 0 )
- {
- msg_Err( p_access, "header size == 0" );
- goto error;
- }
- /* close this connection */
- net_Close( p_sys->fd ); p_sys->fd = -1;
- /* *** parse header and get stream and their id *** */
- /* get all streams properties,
- *
- * TODO : stream bitrates properties(optional)
- * and bitrate mutual exclusion(optional) */
- E_( asf_HeaderParse )( &p_sys->asfh,
- p_sys->p_header, p_sys->i_header );
- msg_Dbg( p_access, "packet count=%lld packet size=%d",
- p_sys->asfh.i_data_packets_count,
- p_sys->asfh.i_min_data_packet_size );
- E_( asf_StreamSelect)( &p_sys->asfh,
- var_CreateGetInteger( p_access, "mms-maxbitrate" ),
- var_CreateGetInteger( p_access, "mms-all" ),
- var_CreateGetInteger( p_access, "audio" ),
- var_CreateGetInteger( p_access, "video" ) );
- return VLC_SUCCESS;
- error:
- if( p_sys->fd > 0 )
- {
- net_Close( p_sys->fd );
- p_sys->fd = -1;
- }
- return VLC_EGENERIC;
- }
- /*****************************************************************************
- *
- *****************************************************************************/
- static int Start( access_t *p_access, off_t i_pos )
- {
- access_sys_t *p_sys = p_access->p_sys;
- int i_streams = 0;
- int i;
- char *psz;
- msg_Dbg( p_access, "starting stream" );
- if( ( p_sys->fd = net_OpenTCP( p_access, p_sys->url.psz_host,
- p_sys->url.i_port ) ) < 0 )
- {
- /* should not occur */
- msg_Err( p_access, "cannot connect to the server" );
- return VLC_EGENERIC;
- }
- for( i = 1; i < 128; i++ )
- {
- if( p_sys->asfh.stream[i].i_selected )
- {
- i_streams++;
- }
- }
- if( i_streams <= 0 )
- {
- msg_Err( p_access, "no stream selected" );
- return VLC_EGENERIC;
- }
- net_Printf( VLC_OBJECT(p_access), p_sys->fd,
- "GET %s HTTP/1.0rn"
- "Accept: */*rn"
- "User-Agent: NSPlayer/4.1.0.3856rn"
- "Host: %s:%drn",
- ( p_sys->url.psz_path == NULL || *p_sys->url.psz_path == ' ' ) ? "/" : p_sys->url.psz_path,
- p_sys->url.psz_host, p_sys->url.i_port );
- if( p_sys->b_broadcast )
- {
- net_Printf( VLC_OBJECT(p_access), p_sys->fd,
- "Pragma: no-cache,rate=1.000000,request-context=%drn",
- p_sys->i_request_context++ );
- }
- else
- {
- net_Printf( VLC_OBJECT(p_access), p_sys->fd,
- "Pragma: no-cache,rate=1.000000,stream-time=0,stream-offset=%u:%u,request-context=%d,max-duration=0rn",
- (uint32_t)((i_pos >> 32)&0xffffffff),
- (uint32_t)(i_pos&0xffffffff),
- p_sys->i_request_context++ );
- }
- net_Printf( VLC_OBJECT(p_access), p_sys->fd,
- "Pragma: xPlayStrm=1rn"
- "Pragma: xClientGUID={"GUID_FMT"}rn"
- "Pragma: stream-switch-count=%drn"
- "Pragma: stream-switch-entry=",
- GUID_PRINT( p_sys->guid ),
- i_streams);
- for( i = 1; i < 128; i++ )
- {
- if( p_sys->asfh.stream[i].i_cat != ASF_STREAM_UNKNOWN )
- {
- int i_select = 2;
- if( p_sys->asfh.stream[i].i_selected )
- {
- i_select = 0;
- }
- net_Printf( VLC_OBJECT(p_access), p_sys->fd,
- "ffff:%d:%d ", i, i_select );
- }
- }
- net_Printf( VLC_OBJECT(p_access), p_sys->fd, "rn" );
- net_Printf( VLC_OBJECT(p_access), p_sys->fd, "Connection: Closern" );
- if( net_Printf( VLC_OBJECT(p_access), p_sys->fd, "rn" ) < 0 )
- {
- msg_Err( p_access, "failed to send request" );
- return VLC_EGENERIC;
- }
- if( ( psz = net_Gets( VLC_OBJECT(p_access), p_sys->fd ) ) == NULL )
- {
- msg_Err( p_access, "cannot read data" );
- return VLC_EGENERIC;
- }
- if( atoi( &psz[9] ) >= 400 )
- {
- msg_Err( p_access, "error: %s", psz );
- free( psz );
- return VLC_EGENERIC;
- }
- msg_Dbg( p_access, "HTTP reply '%s'", psz );
- free( psz );
- /* FIXME check HTTP code */
- for( ;; )
- {
- char *psz = net_Gets( p_access, p_sys->fd );
- if( psz == NULL )
- {
- msg_Err( p_access, "cannot read data" );
- return VLC_EGENERIC;
- }
- if( *psz == ' ' )
- {
- free( psz );
- break;
- }
- msg_Dbg( p_access, "%s", psz );
- free( psz );
- }
- p_sys->i_packet_used = 0;
- p_sys->i_packet_length = 0;
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- *
- *****************************************************************************/
- static void Stop( access_t *p_access )
- {
- access_sys_t *p_sys = p_access->p_sys;
- msg_Dbg( p_access, "closing stream" );
- if( p_sys->fd > 0 )
- {
- net_Close( p_sys->fd );
- p_sys->fd = -1;
- }
- }
- /*****************************************************************************
- *
- *****************************************************************************/
- static int GetPacket( access_t * p_access, chunk_t *p_ck )
- {
- access_sys_t *p_sys = p_access->p_sys;
- /* chunk_t */
- memset( p_ck, 0, sizeof( chunk_t ) );
- /* Read the chunk header */
- if( net_Read( p_access, p_sys->fd, p_sys->buffer, 12, VLC_TRUE ) < 12 )
- {
- /* msg_Err( p_access, "cannot read data" ); */
- return VLC_EGENERIC;
- }
- p_ck->i_type = GetWLE( p_sys->buffer);
- p_ck->i_size = GetWLE( p_sys->buffer + 2);
- p_ck->i_sequence = GetDWLE( p_sys->buffer + 4);
- p_ck->i_unknown = GetWLE( p_sys->buffer + 8);
- p_ck->i_size2 = GetWLE( p_sys->buffer + 10);
- p_ck->p_data = p_sys->buffer + 12;
- p_ck->i_data = p_ck->i_size2 - 8;
- if( p_ck->i_type == 0x4524 ) // Transfer complete
- {
- if( p_ck->i_sequence == 0 )
- {
- msg_Warn( p_access, "EOF" );
- return VLC_EGENERIC;
- }
- else
- {
- msg_Warn( p_access, "Next stream follow but not supported" );
- return VLC_EGENERIC;
- }
- }
- else if( p_ck->i_type != 0x4824 && p_ck->i_type != 0x4424 )
- {
- msg_Err( p_access, "invalid chunk FATAL (0x%x)", p_ck->i_type );
- return VLC_EGENERIC;
- }
- if( p_ck->i_data > 0 &&
- net_Read( p_access, p_sys->fd, &p_sys->buffer[12], p_ck->i_data, VLC_TRUE ) < p_ck->i_data )
- {
- msg_Err( p_access, "cannot read data" );
- return VLC_EGENERIC;
- }
- if( p_sys->i_packet_sequence != 0 &&
- p_ck->i_sequence != p_sys->i_packet_sequence )
- {
- msg_Warn( p_access, "packet lost ? (%d != %d)", p_ck->i_sequence, p_sys->i_packet_sequence );
- }
- p_sys->i_packet_sequence = p_ck->i_sequence + 1;
- p_sys->i_packet_used = 0;
- p_sys->i_packet_length = p_ck->i_data;
- p_sys->p_packet = p_ck->p_data;
- return VLC_SUCCESS;
- }