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vlc/modules/misc/rtsp.c
Rémi Denis-Courmont 7656b8c5ca Factor HTTP/HTTPS/RTSP port in core
2011-08-02 19:19:14 +03:00

1552 lines
50 KiB
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/*****************************************************************************
* rtsp.c: rtsp VoD server module
*****************************************************************************
* Copyright (C) 2003-2006 the VideoLAN team
* $Id$
*
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
* Gildas Bazin <gbazin@videolan.org>
*
* 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <vlc_common.h>
#include <vlc_plugin.h>
#include <vlc_input.h>
#include <vlc_sout.h>
#include <vlc_block.h>
#include <vlc_httpd.h>
#include <vlc_vod.h>
#include <vlc_url.h>
#include <vlc_network.h>
#include <vlc_charset.h>
#include <vlc_strings.h>
#include <vlc_rand.h>
#ifndef WIN32
# include <locale.h>
#endif
#ifdef HAVE_XLOCALE_H
# include <xlocale.h>
#endif
/*****************************************************************************
* Module descriptor
*****************************************************************************/
static int Open ( vlc_object_t * );
static void Close( vlc_object_t * );
#define THROTTLE_TEXT N_( "Maximum number of connections" )
#define THROTTLE_LONGTEXT N_( "This limits the maximum number of clients " \
"that can connect to the RTSP VOD. 0 means no limit." )
#define RAWMUX_TEXT N_( "MUX for RAW RTSP transport" )
#define SESSION_TIMEOUT_TEXT N_( "Sets the timeout option in the RTSP " \
"session string" )
#define SESSION_TIMEOUT_LONGTEXT N_( "Defines what timeout option to add " \
"to the RTSP session ID string. Setting it to a negative number removes " \
"the timeout option entirely. This is needed by some IPTV STBs (such as " \
"those made by HansunTech) which get confused by it. The default is 5." )
vlc_module_begin ()
set_shortname( N_("RTSP VoD" ) )
set_description( N_("RTSP VoD server") )
set_category( CAT_SOUT )
set_subcategory( SUBCAT_SOUT_VOD )
set_capability( "vod server", 1 )
set_callbacks( Open, Close )
add_shortcut( "rtsp" )
add_string( "rtsp-raw-mux", "ts", RAWMUX_TEXT,
RAWMUX_TEXT, true )
add_integer( "rtsp-throttle-users", 0, THROTTLE_TEXT,
THROTTLE_LONGTEXT, true )
add_integer( "rtsp-session-timeout", 5, SESSION_TIMEOUT_TEXT,
SESSION_TIMEOUT_LONGTEXT, true )
vlc_module_end ()
/*****************************************************************************
* Exported prototypes
*****************************************************************************/
typedef struct media_es_t media_es_t;
typedef struct
{
media_es_t *p_media_es;
int i_port;
} rtsp_client_es_t;
typedef struct
{
char *psz_session;
bool b_playing; /* is it in "play" state */
int i_port_raw;
int i_es;
rtsp_client_es_t **es;
} rtsp_client_t;
struct media_es_t
{
/* VoD server */
vod_t *p_vod;
/* RTSP server */
httpd_url_t *p_rtsp_url;
vod_media_t *p_media;
es_format_t fmt;
uint8_t i_payload_type;
const char *psz_ptname;
unsigned i_clock_rate;
unsigned i_channels;
char *psz_fmtp;
};
struct vod_media_t
{
int id;
/* VoD server */
vod_t *p_vod;
/* RTSP server */
httpd_url_t *p_rtsp_url;
char *psz_rtsp_control_v4;
char *psz_rtsp_control_v6;
char *psz_rtsp_path;
vlc_mutex_t lock;
/* ES list */
int i_es;
media_es_t **es;
const char *psz_mux;
bool b_raw;
/* RTSP client */
int i_rtsp;
rtsp_client_t **rtsp;
/* Infos */
mtime_t i_length;
};
struct vod_sys_t
{
/* RTSP server */
httpd_host_t *p_rtsp_host;
int i_throttle_users;
int i_connections;
char *psz_raw_mux;
int i_session_timeout;
/* List of media */
int i_media_id;
int i_media;
vod_media_t **media;
/* */
vlc_thread_t thread;
block_fifo_t *p_fifo_cmd;
};
/* rtsp delayed command (to avoid deadlock between vlm/httpd) */
typedef enum
{
RTSP_CMD_TYPE_NONE, /* Exit requested */
RTSP_CMD_TYPE_PLAY,
RTSP_CMD_TYPE_PAUSE,
RTSP_CMD_TYPE_STOP,
RTSP_CMD_TYPE_SEEK,
RTSP_CMD_TYPE_REWIND,
RTSP_CMD_TYPE_FORWARD,
RTSP_CMD_TYPE_ADD,
RTSP_CMD_TYPE_DEL,
} rtsp_cmd_type_t;
/* */
typedef struct
{
int i_type;
int i_media_id;
vod_media_t *p_media;
char *psz_session;
char *psz_arg;
int64_t i_arg;
double f_arg;
} rtsp_cmd_t;
static vod_media_t *MediaNew( vod_t *, const char *, input_item_t * );
static void MediaDel( vod_t *, vod_media_t * );
static void MediaAskDel ( vod_t *, vod_media_t * );
static int MediaAddES( vod_t *, vod_media_t *, es_format_t * );
static void MediaDelES( vod_t *, vod_media_t *, es_format_t * );
static void* CommandThread( void * );
static void CommandPush( vod_t *, rtsp_cmd_type_t, vod_media_t *,
const char *psz_session, int64_t i_arg,
double f_arg, const char *psz_arg );
static rtsp_client_t *RtspClientNew( vod_media_t *, char * );
static rtsp_client_t *RtspClientGet( vod_media_t *, const char * );
static void RtspClientDel( vod_media_t *, rtsp_client_t * );
static int RtspCallback( httpd_callback_sys_t *, httpd_client_t *,
httpd_message_t *, const httpd_message_t * );
static int RtspCallbackES( httpd_callback_sys_t *, httpd_client_t *,
httpd_message_t *, const httpd_message_t * );
static char *SDPGenerate( const vod_media_t *, httpd_client_t *cl );
static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
{
static const char hex[16] = "0123456789abcdef";
for( int i = 0; i < i_data; i++ )
{
s[2*i+0] = hex[(p_data[i]>>4)&0xf];
s[2*i+1] = hex[(p_data[i] )&0xf];
}
s[2*i_data] = '\0';
}
/*****************************************************************************
* Open: Starts the RTSP server module
*****************************************************************************/
static int Open( vlc_object_t *p_this )
{
vod_t *p_vod = (vod_t *)p_this;
vod_sys_t *p_sys = NULL;
p_vod->p_sys = p_sys = malloc( sizeof( vod_sys_t ) );
if( !p_sys ) goto error;
p_sys->p_rtsp_host = 0;
p_sys->i_session_timeout = var_CreateGetInteger( p_this, "rtsp-session-timeout" );
p_sys->i_throttle_users = var_CreateGetInteger( p_this, "rtsp-throttle-users" );
msg_Dbg( p_this, "allowing up to %d connections", p_sys->i_throttle_users );
p_sys->i_connections = 0;
p_sys->psz_raw_mux = var_CreateGetString( p_this, "rtsp-raw-mux" );
p_sys->p_rtsp_host = vlc_rtsp_HostNew( VLC_OBJECT(p_vod) );
if( !p_sys->p_rtsp_host )
{
msg_Err( p_vod, "cannot create RTSP server" );
goto error;
}
TAB_INIT( p_sys->i_media, p_sys->media );
p_sys->i_media_id = 0;
p_vod->pf_media_new = MediaNew;
p_vod->pf_media_del = MediaAskDel;
p_sys->p_fifo_cmd = block_FifoNew();
if( vlc_clone( &p_sys->thread, CommandThread, p_vod, VLC_THREAD_PRIORITY_LOW ) )
{
msg_Err( p_vod, "cannot spawn rtsp vod thread" );
block_FifoRelease( p_sys->p_fifo_cmd );
goto error;
}
return VLC_SUCCESS;
error:
if( p_sys )
{
if( p_sys->p_rtsp_host ) httpd_HostDelete( p_sys->p_rtsp_host );
free( p_sys->psz_raw_mux );
free( p_sys );
}
return VLC_EGENERIC;
}
/*****************************************************************************
* Close:
*****************************************************************************/
static void Close( vlc_object_t * p_this )
{
vod_t *p_vod = (vod_t *)p_this;
vod_sys_t *p_sys = p_vod->p_sys;
/* Stop command thread */
CommandPush( p_vod, RTSP_CMD_TYPE_NONE, NULL, NULL, 0, 0.0, NULL );
vlc_join( p_sys->thread, NULL );
while( block_FifoCount( p_sys->p_fifo_cmd ) > 0 )
{
rtsp_cmd_t cmd;
block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
block_Release( p_block_cmd );
if ( cmd.i_type == RTSP_CMD_TYPE_DEL )
MediaDel(p_vod, cmd.p_media);
free( cmd.psz_session );
free( cmd.psz_arg );
}
block_FifoRelease( p_sys->p_fifo_cmd );
httpd_HostDelete( p_sys->p_rtsp_host );
var_Destroy( p_this, "rtsp-session-timeout" );
var_Destroy( p_this, "rtsp-throttle-users" );
var_Destroy( p_this, "rtsp-raw-mux" );
/* Check VLM is not buggy */
if( p_sys->i_media > 0 )
msg_Err( p_vod, "rtsp vod leaking %d medias", p_sys->i_media );
TAB_CLEAN( p_sys->i_media, p_sys->media );
free( p_sys->psz_raw_mux );
free( p_sys );
}
/*****************************************************************************
* Media handling
*****************************************************************************/
static vod_media_t *MediaNew( vod_t *p_vod, const char *psz_name,
input_item_t *p_item )
{
vod_sys_t *p_sys = p_vod->p_sys;
vod_media_t *p_media = calloc( 1, sizeof(vod_media_t) );
if( !p_media )
return NULL;
p_media->id = p_sys->i_media_id++;
TAB_INIT( p_media->i_es, p_media->es );
p_media->psz_mux = NULL;
TAB_INIT( p_media->i_rtsp, p_media->rtsp );
p_media->b_raw = false;
p_media->psz_rtsp_path = strdup( psz_name );
p_media->p_rtsp_url =
httpd_UrlNewUnique( p_sys->p_rtsp_host, psz_name, NULL, NULL, NULL );
if( !p_media->psz_rtsp_path || !p_media->p_rtsp_url )
{
msg_Err( p_vod, "cannot create RTSP url (%s)", psz_name );
if( p_media->p_rtsp_url )
httpd_UrlDelete( p_media->p_rtsp_url );
free( p_media->psz_rtsp_path );
free( p_media );
return NULL;
}
msg_Dbg( p_vod, "created RTSP url: %s", p_media->psz_rtsp_path );
if( asprintf( &p_media->psz_rtsp_control_v4,
"rtsp://%%s:%%d%s/trackID=%%d",
p_media->psz_rtsp_path ) < 0 )
{
httpd_UrlDelete( p_media->p_rtsp_url );
free( p_media->psz_rtsp_path );
free( p_media );
return NULL;
}
if( asprintf( &p_media->psz_rtsp_control_v6,
"rtsp://[%%s]:%%d%s/trackID=%%d",
p_media->psz_rtsp_path ) < 0 )
{
httpd_UrlDelete( p_media->p_rtsp_url );
free( p_media->psz_rtsp_path );
free( p_media );
return NULL;
}
httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_SETUP,
RtspCallback, (void*)p_media );
httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_DESCRIBE,
RtspCallback, (void*)p_media );
httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PLAY,
RtspCallback, (void*)p_media );
httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PAUSE,
RtspCallback, (void*)p_media );
httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_GETPARAMETER,
RtspCallback, (void*)p_media );
httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_TEARDOWN,
RtspCallback, (void*)p_media );
p_media->p_vod = p_vod;
vlc_mutex_init( &p_media->lock );
p_media->i_length = input_item_GetDuration( p_item );
vlc_mutex_lock( &p_item->lock );
msg_Dbg( p_vod, "media has %i declared ES", p_item->i_es );
for( int i = 0; i < p_item->i_es; i++ )
{
MediaAddES( p_vod, p_media, p_item->es[i] );
}
vlc_mutex_unlock( &p_item->lock );
CommandPush( p_vod, RTSP_CMD_TYPE_ADD, p_media, NULL, 0, 0.0, NULL );
return p_media;
}
static void MediaAskDel ( vod_t *p_vod, vod_media_t *p_media )
{
CommandPush( p_vod, RTSP_CMD_TYPE_DEL, p_media, NULL, 0, 0.0, NULL );
}
static void MediaDel( vod_t *p_vod, vod_media_t *p_media )
{
vod_sys_t *p_sys = p_vod->p_sys;
msg_Dbg( p_vod, "deleting media: %s", p_media->psz_rtsp_path );
TAB_REMOVE( p_sys->i_media, p_sys->media, p_media );
httpd_UrlDelete( p_media->p_rtsp_url );
while( p_media->i_rtsp > 0 )
RtspClientDel( p_media, p_media->rtsp[0] );
TAB_CLEAN( p_media->i_rtsp, p_media->rtsp );
free( p_media->psz_rtsp_path );
free( p_media->psz_rtsp_control_v6 );
free( p_media->psz_rtsp_control_v4 );
while( p_media->i_es )
MediaDelES( p_vod, p_media, &p_media->es[0]->fmt );
TAB_CLEAN( p_media->i_es, p_media->es );
vlc_mutex_destroy( &p_media->lock );
free( p_media );
}
static int MediaAddES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt )
{
char *psz_urlc;
media_es_t *p_es = calloc( 1, sizeof(media_es_t) );
if( !p_es )
return VLC_ENOMEM;
p_media->psz_mux = NULL;
/* TODO: update SDP, etc... */
if( asprintf( &psz_urlc, "%s/trackID=%d",
p_media->psz_rtsp_path, p_media->i_es ) < 0 )
{
free( p_es );
return VLC_ENOMEM;
}
msg_Dbg( p_vod, " - ES %4.4s (%s)", (char *)&p_fmt->i_codec, psz_urlc );
/* Dynamic payload. No conflict since we put each ES in its own
* RTP session */
p_es->i_payload_type = 96;
p_es->i_clock_rate = 90000;
p_es->i_channels = 1;
switch( p_fmt->i_codec )
{
case VLC_CODEC_S16B:
if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
{
p_es->i_payload_type = 11;
}
else if( p_fmt->audio.i_channels == 2 &&
p_fmt->audio.i_rate == 44100 )
{
p_es->i_payload_type = 10;
}
p_es->psz_ptname = "L16";
p_es->i_clock_rate = p_fmt->audio.i_rate;
p_es->i_channels = p_fmt->audio.i_channels;
break;
case VLC_CODEC_U8:
p_es->psz_ptname = "L8";
p_es->i_clock_rate = p_fmt->audio.i_rate;
p_es->i_channels = p_fmt->audio.i_channels;
break;
case VLC_CODEC_MPGA:
p_es->i_payload_type = 14;
p_es->psz_ptname = "MPA";
break;
case VLC_CODEC_MPGV:
p_es->i_payload_type = 32;
p_es->psz_ptname = "MPV";
break;
case VLC_CODEC_A52:
p_es->psz_ptname = "ac3";
p_es->i_clock_rate = p_fmt->audio.i_rate;
break;
case VLC_CODEC_H263:
p_es->psz_ptname = "H263-1998";
break;
case VLC_CODEC_H264:
p_es->psz_ptname = "H264";
p_es->psz_fmtp = NULL;
/* FIXME AAAAAAAAAAAARRRRRRRRGGGG copied from stream_out/rtp.c */
if( p_fmt->i_extra > 0 )
{
uint8_t *p_buffer = p_fmt->p_extra;
int i_buffer = p_fmt->i_extra;
char *p_64_sps = NULL;
char *p_64_pps = NULL;
char hexa[6+1];
while( i_buffer > 4 )
{
int i_offset = 0;
int i_size = 0;
while( p_buffer[0] != 0 || p_buffer[1] != 0 ||
p_buffer[2] != 1 )
{
p_buffer++;
i_buffer--;
if( i_buffer == 0 ) break;
}
if( i_buffer < 4 || memcmp(p_buffer, "\x00\x00\x01", 3 ) )
{
/* No startcode found.. */
break;
}
p_buffer += 3;
i_buffer -= 3;
const int i_nal_type = p_buffer[0]&0x1f;
i_size = i_buffer;
for( i_offset = 0; i_offset+2 < i_buffer ; i_offset++)
{
if( !memcmp(p_buffer + i_offset, "\x00\x00\x01", 3 ) )
{
/* we found another startcode */
while( i_offset > 0 && 0 == p_buffer[ i_offset - 1 ] )
i_offset--;
i_size = i_offset;
break;
}
}
if( i_size == 0 )
{
/* No-info found in nal */
continue;
}
if( i_nal_type == 7 )
{
free( p_64_sps );
p_64_sps = vlc_b64_encode_binary( p_buffer, i_size );
/* XXX: nothing ensures that i_size >= 4 ?? */
sprintf_hexa( hexa, &p_buffer[1], 3 );
}
else if( i_nal_type == 8 )
{
free( p_64_pps );
p_64_pps = vlc_b64_encode_binary( p_buffer, i_size );
}
i_buffer -= i_size;
p_buffer += i_size;
}
/* */
if( p_64_sps && p_64_pps )
{
if( asprintf( &p_es->psz_fmtp,
"packetization-mode=1;profile-level-id=%s;"
"sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
p_64_pps ) < 0 )
{
free( p_64_sps );
free( p_64_pps );
free( psz_urlc );
free( p_es );
return VLC_ENOMEM;
}
}
free( p_64_sps );
free( p_64_pps );
}
if( !p_es->psz_fmtp )
p_es->psz_fmtp = strdup( "packetization-mode=1" );
break;
case VLC_CODEC_MP4V:
p_es->psz_ptname = "MP4V-ES";
if( p_fmt->i_extra > 0 )
{
char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
if( asprintf( &p_es->psz_fmtp,
"profile-level-id=3; config=%s;", p_hexa ) == -1 )
p_es->psz_fmtp = NULL;
free( p_hexa );
}
break;
case VLC_CODEC_MP4A:
p_es->psz_ptname = "mpeg4-generic";
p_es->i_clock_rate = p_fmt->audio.i_rate;
if( p_fmt->i_extra > 0 )
{
char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
if( asprintf( &p_es->psz_fmtp,
"streamtype=5; profile-level-id=15; mode=AAC-hbr; "
"config=%s; SizeLength=13;IndexLength=3; "
"IndexDeltaLength=3; Profile=1;", p_hexa ) == -1 )
p_es->psz_fmtp = NULL;
free( p_hexa );
}
break;
case VLC_FOURCC( 'm', 'p', '2', 't' ):
p_media->psz_mux = "ts";
p_es->i_payload_type = 33;
p_es->psz_ptname = "MP2T";
break;
case VLC_FOURCC( 'm', 'p', '2', 'p' ):
p_media->psz_mux = "ps";
p_es->psz_ptname = "MP2P";
break;
case VLC_CODEC_AMR_NB:
p_es->psz_ptname = "AMR";
p_es->i_clock_rate = 8000;
if(p_fmt->audio.i_channels == 2 )
p_es->i_channels = 2;
p_es->psz_fmtp = strdup( "octet-align=1" );
break;
case VLC_CODEC_AMR_WB:
p_es->psz_ptname = "AMR-WB";
p_es->i_clock_rate = 16000;
if(p_fmt->audio.i_channels == 2 )
p_es->i_channels = 2;
p_es->psz_fmtp = strdup( "octet-align=1" );
break;
default:
msg_Err( p_vod, "cannot add this stream (unsupported "
"codec: %4.4s)", (char*)&p_fmt->i_codec );
free( psz_urlc );
free( p_es );
return VLC_EGENERIC;
}
p_es->p_rtsp_url =
httpd_UrlNewUnique( p_vod->p_sys->p_rtsp_host, psz_urlc, NULL, NULL,
NULL );
if( !p_es->p_rtsp_url )
{
msg_Err( p_vod, "cannot create RTSP url (%s)", psz_urlc );
free( psz_urlc );
free( p_es );
return VLC_EGENERIC;
}
free( psz_urlc );
httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_SETUP,
RtspCallbackES, (void*)p_es );
httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_TEARDOWN,
RtspCallbackES, (void*)p_es );
httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PLAY,
RtspCallbackES, (void*)p_es );
httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PAUSE,
RtspCallbackES, (void*)p_es );
es_format_Copy( &p_es->fmt, p_fmt );
p_es->p_vod = p_vod;
p_es->p_media = p_media;
vlc_mutex_lock( &p_media->lock );
TAB_APPEND( p_media->i_es, p_media->es, p_es );
vlc_mutex_unlock( &p_media->lock );
return VLC_SUCCESS;
}
static void MediaDelES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt)
{
media_es_t *p_es = NULL;
/* Find the ES */
for( int i = 0; i < p_media->i_es; i++ )
{
if( p_media->es[i]->fmt.i_cat == p_fmt->i_cat &&
p_media->es[i]->fmt.i_codec == p_fmt->i_codec &&
p_media->es[i]->fmt.i_id == p_fmt->i_id )
{
p_es = p_media->es[i];
}
}
if( !p_es ) return;
msg_Dbg( p_vod, " - Removing ES %4.4s", (char *)&p_fmt->i_codec );
vlc_mutex_lock( &p_media->lock );
TAB_REMOVE( p_media->i_es, p_media->es, p_es );
vlc_mutex_unlock( &p_media->lock );
free( p_es->psz_fmtp );
if( p_es->p_rtsp_url ) httpd_UrlDelete( p_es->p_rtsp_url );
es_format_Clean( &p_es->fmt );
free( p_es );
}
static void CommandPush( vod_t *p_vod, rtsp_cmd_type_t i_type, vod_media_t *p_media, const char *psz_session, int64_t i_arg,
double f_arg, const char *psz_arg )
{
rtsp_cmd_t cmd;
block_t *p_cmd;
memset( &cmd, 0, sizeof(cmd) );
cmd.i_type = i_type;
cmd.p_media = p_media;
if( p_media )
cmd.i_media_id = p_media->id;
if( psz_session )
cmd.psz_session = strdup(psz_session);
cmd.i_arg = i_arg;
cmd.f_arg = f_arg;
if( psz_arg )
cmd.psz_arg = strdup(psz_arg);
p_cmd = block_New( p_vod, sizeof(rtsp_cmd_t) );
memcpy( p_cmd->p_buffer, &cmd, sizeof(cmd) );
block_FifoPut( p_vod->p_sys->p_fifo_cmd, p_cmd );
}
static void* CommandThread( void *obj )
{
vod_t *p_vod = (vod_t*)obj;
vod_sys_t *p_sys = p_vod->p_sys;
int canc = vlc_savecancel ();
for( ;; )
{
block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
rtsp_cmd_t cmd;
vod_media_t *p_media = NULL;
int i;
if( !p_block_cmd )
break;
memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
block_Release( p_block_cmd );
if( cmd.i_type == RTSP_CMD_TYPE_NONE )
break;
if ( cmd.i_type == RTSP_CMD_TYPE_ADD )
{
TAB_APPEND( p_sys->i_media, p_sys->media, cmd.p_media );
goto next;
}
if ( cmd.i_type == RTSP_CMD_TYPE_DEL )
{
MediaDel(p_vod, cmd.p_media);
goto next;
}
/* */
for( i = 0; i < p_sys->i_media; i++ )
{
if( p_sys->media[i]->id == cmd.i_media_id )
break;
}
if( i >= p_sys->i_media )
{
goto next;
}
p_media = p_sys->media[i];
switch( cmd.i_type )
{
case RTSP_CMD_TYPE_PLAY:
cmd.i_arg = -1;
vod_MediaControl( p_vod, p_media, cmd.psz_session,
VOD_MEDIA_PLAY, cmd.psz_arg, &cmd.i_arg );
break;
case RTSP_CMD_TYPE_PAUSE:
cmd.i_arg = -1;
vod_MediaControl( p_vod, p_media, cmd.psz_session,
VOD_MEDIA_PAUSE, &cmd.i_arg );
break;
case RTSP_CMD_TYPE_STOP:
vod_MediaControl( p_vod, p_media, cmd.psz_session, VOD_MEDIA_STOP );
break;
case RTSP_CMD_TYPE_SEEK:
vod_MediaControl( p_vod, p_media, cmd.psz_session,
VOD_MEDIA_SEEK, cmd.i_arg );
break;
case RTSP_CMD_TYPE_REWIND:
vod_MediaControl( p_vod, p_media, cmd.psz_session,
VOD_MEDIA_REWIND, cmd.f_arg );
break;
case RTSP_CMD_TYPE_FORWARD:
vod_MediaControl( p_vod, p_media, cmd.psz_session,
VOD_MEDIA_FORWARD, cmd.f_arg );
break;
default:
break;
}
next:
free( cmd.psz_session );
free( cmd.psz_arg );
}
vlc_restorecancel (canc);
return NULL;
}
/****************************************************************************
* RTSP server implementation
****************************************************************************/
static rtsp_client_t *RtspClientNew( vod_media_t *p_media, char *psz_session )
{
rtsp_client_t *p_rtsp = calloc( 1, sizeof(rtsp_client_t) );
if( !p_rtsp )
return NULL;
p_rtsp->es = 0;
p_rtsp->psz_session = psz_session;
TAB_APPEND( p_media->i_rtsp, p_media->rtsp, p_rtsp );
p_media->p_vod->p_sys->i_connections++;
msg_Dbg( p_media->p_vod, "new session: %s, connections: %d",
psz_session, p_media->p_vod->p_sys->i_throttle_users );
return p_rtsp;
}
static rtsp_client_t *RtspClientGet( vod_media_t *p_media, const char *psz_session )
{
for( int i = 0; psz_session && i < p_media->i_rtsp; i++ )
{
if( !strcmp( p_media->rtsp[i]->psz_session, psz_session ) )
return p_media->rtsp[i];
}
return NULL;
}
static void RtspClientDel( vod_media_t *p_media, rtsp_client_t *p_rtsp )
{
p_media->p_vod->p_sys->i_connections--;
msg_Dbg( p_media->p_vod, "closing session: %s, connections: %d",
p_rtsp->psz_session, p_media->p_vod->p_sys->i_throttle_users );
while( p_rtsp->i_es )
{
p_rtsp->i_es--;
free( p_rtsp->es[p_rtsp->i_es] );
}
free( p_rtsp->es );
TAB_REMOVE( p_media->i_rtsp, p_media->rtsp, p_rtsp );
free( p_rtsp->psz_session );
free( p_rtsp );
}
static int64_t ParseNPT (const char *str)
{
locale_t loc = newlocale (LC_NUMERIC_MASK, "C", NULL);
locale_t oldloc = uselocale (loc);
unsigned hour, min;
float sec;
if (sscanf (str, "%u:%u:%f", &hour, &min, &sec) == 3)
sec += ((hour * 60) + min) * 60;
else
if (sscanf (str, "%f", &sec) != 1)
sec = 0.;
if (loc != (locale_t)0)
{
uselocale (oldloc);
freelocale (loc);
}
return sec * CLOCK_FREQ;
}
static int RtspCallback( httpd_callback_sys_t *p_args, httpd_client_t *cl,
httpd_message_t *answer, const httpd_message_t *query )
{
vod_media_t *p_media = (vod_media_t*)p_args;
vod_t *p_vod = p_media->p_vod;
const char *psz_transport = NULL;
const char *psz_playnow = NULL; /* support option: x-playNow */
const char *psz_session = NULL;
const char *psz_cseq = NULL;
rtsp_client_t *p_rtsp;
int i_cseq = 0;
if( answer == NULL || query == NULL ) return VLC_SUCCESS;
msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
answer->i_proto = HTTPD_PROTO_RTSP;
answer->i_version = query->i_version;
answer->i_type = HTTPD_MSG_ANSWER;
answer->i_body = 0;
answer->p_body = NULL;
switch( query->i_type )
{
case HTTPD_MSG_SETUP:
{
psz_playnow = httpd_MsgGet( query, "x-playNow" );
psz_transport = httpd_MsgGet( query, "Transport" );
if( psz_transport == NULL )
{
answer->i_status = 400;
break;
}
msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
if( strstr( psz_transport, "unicast" ) &&
strstr( psz_transport, "client_port=" ) )
{
rtsp_client_t *p_rtsp = NULL;
char ip[NI_MAXNUMERICHOST];
int i_port = atoi( strstr( psz_transport, "client_port=" ) +
strlen("client_port=") );
if( strstr( psz_transport, "MP2T/H2221/UDP" ) ||
strstr( psz_transport, "RAW/RAW/UDP" ) )
{
p_media->psz_mux = p_vod->p_sys->psz_raw_mux;
p_media->b_raw = true;
}
if( httpd_ClientIP( cl, ip, NULL ) == NULL )
{
answer->i_status = 500;
answer->i_body = 0;
answer->p_body = NULL;
break;
}
msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
ip, i_port );
psz_session = httpd_MsgGet( query, "Session" );
if( !psz_session || !*psz_session )
{
char *psz_new;
if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
{
answer->i_status = 503;
answer->i_body = 0;
answer->p_body = NULL;
break;
}
#warning Should use secure randomness here! (spoofing risk)
if( asprintf( &psz_new, "%lu", vlc_mrand48() ) < 0 )
return VLC_ENOMEM;
psz_session = psz_new;
p_rtsp = RtspClientNew( p_media, psz_new );
if( !p_rtsp )
{
answer->i_status = 454;
answer->i_body = 0;
answer->p_body = NULL;
break;
}
}
else
{
p_rtsp = RtspClientGet( p_media, psz_session );
if( !p_rtsp )
{
answer->i_status = 454;
answer->i_body = 0;
answer->p_body = NULL;
break;
}
}
answer->i_status = 200;
answer->i_body = 0;
answer->p_body = NULL;
if( p_media->b_raw )
{
p_rtsp->i_port_raw = i_port;
if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
{
httpd_MsgAdd( answer, "Transport",
"MP2T/H2221/UDP;unicast;client_port=%d-%d",
i_port, i_port + 1 );
}
else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
{
httpd_MsgAdd( answer, "Transport",
"RAW/RAW/UDP;unicast;client_port=%d-%d",
i_port, i_port + 1 );
}
}
else
httpd_MsgAdd( answer, "Transport",
"RTP/AVP/UDP;unicast;client_port=%d-%d",
i_port, i_port + 1 );
}
else /* TODO strstr( psz_transport, "interleaved" ) ) */
{
answer->i_status = 461;
answer->i_body = 0;
answer->p_body = NULL;
}
/* Intentional fall-through on x-playNow option in RTSP request */
if( !psz_playnow )
break;
}
case HTTPD_MSG_PLAY:
{
char *psz_output, ip[NI_MAXNUMERICHOST];
int i_port_audio = 0, i_port_video = 0;
/* for now only multicast so easy */
if( !psz_playnow )
{
answer->i_status = 200;
answer->i_body = 0;
answer->p_body = NULL;
}
if( !psz_session )
psz_session = httpd_MsgGet( query, "Session" );
msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
p_rtsp = RtspClientGet( p_media, psz_session );
if( !p_rtsp )
{
answer->i_status = 500;
answer->i_body = 0;
answer->p_body = NULL;
break;
}
if( p_rtsp->b_playing )
{
const char *psz_position = httpd_MsgGet( query, "Range" );
const char *psz_scale = httpd_MsgGet( query, "Scale" );
if( psz_position )
psz_position = strstr( psz_position, "npt=" );
if( psz_position && !psz_scale )
{
int64_t i_time = ParseNPT (psz_position + 4);
msg_Dbg( p_vod, "seeking request: %s", psz_position );
CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
psz_session, i_time, 0.0, NULL );
}
else if( psz_scale )
{
double f_scale = 0.0;
char *end;
f_scale = us_strtod( psz_scale, &end );
if( end > psz_scale )
{
f_scale = (f_scale * 30.0);
if( psz_scale[0] == '-' ) /* rewind */
{
msg_Dbg( p_vod, "rewind request: %s", psz_scale );
CommandPush( p_vod, RTSP_CMD_TYPE_REWIND, p_media,
psz_session, 0, f_scale, NULL );
}
else if(psz_scale[0] != '1' ) /* fast-forward */
{
msg_Dbg( p_vod, "fastforward request: %s",
psz_scale );
CommandPush( p_vod, RTSP_CMD_TYPE_FORWARD, p_media,
psz_session, 0, f_scale, NULL );
}
}
}
/* unpause, in case it's paused */
CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session,
0, 0.0, "" );
break;
}
if( httpd_ClientIP( cl, ip, NULL ) == NULL ) break;
p_rtsp->b_playing = true;
/* FIXME for != 1 video and 1 audio */
for( int i = 0; i < p_rtsp->i_es; i++ )
{
if( p_rtsp->es[i]->p_media_es->fmt.i_cat == AUDIO_ES )
i_port_audio = p_rtsp->es[i]->i_port;
if( p_rtsp->es[i]->p_media_es->fmt.i_cat == VIDEO_ES )
i_port_video = p_rtsp->es[i]->i_port;
}
if( p_media->psz_mux )
{
if( p_media->b_raw )
{
if( asprintf( &psz_output,
"std{access=udp,dst=%s:%i,mux=%s}",
ip, p_rtsp->i_port_raw, p_media->psz_mux ) < 0 )
return VLC_ENOMEM;
}
else
{
if( asprintf( &psz_output,
"rtp{dst=%s,port=%i,mux=%s}",
ip, i_port_video, p_media->psz_mux ) < 0 )
return VLC_ENOMEM;
}
}
else
{
if( asprintf( &psz_output,
"rtp{dst=%s,port-video=%i,port-audio=%i}",
ip, i_port_video, i_port_audio ) < 0 )
return VLC_ENOMEM;
}
CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session,
0, 0.0, psz_output );
free( psz_output );
break;
}
case HTTPD_MSG_DESCRIBE:
{
char *psz_sdp =
SDPGenerate( p_media, cl );
if( psz_sdp != NULL )
{
answer->i_status = 200;
httpd_MsgAdd( answer, "Content-type", "%s",
"application/sdp" );
answer->p_body = (uint8_t *)psz_sdp;
answer->i_body = strlen( psz_sdp );
}
else
{
answer->i_status = 500;
answer->p_body = NULL;
answer->i_body = 0;
}
break;
}
case HTTPD_MSG_PAUSE:
psz_session = httpd_MsgGet( query, "Session" );
msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
p_rtsp = RtspClientGet( p_media, psz_session );
if( !p_rtsp ) break;
CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
0, 0.0, NULL );
answer->i_status = 200;
answer->i_body = 0;
answer->p_body = NULL;
break;
case HTTPD_MSG_TEARDOWN:
/* for now only multicast so easy again */
answer->i_status = 200;
answer->i_body = 0;
answer->p_body = NULL;
psz_session = httpd_MsgGet( query, "Session" );
msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
p_rtsp = RtspClientGet( p_media, psz_session );
if( !p_rtsp ) break;
CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
0, 0.0, NULL );
RtspClientDel( p_media, p_rtsp );
break;
case HTTPD_MSG_GETPARAMETER:
answer->i_status = 200;
answer->i_body = 0;
answer->p_body = NULL;
break;
default:
return VLC_EGENERIC;
}
httpd_MsgAdd( answer, "Server", "VLC/%s", VERSION );
httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
psz_cseq = httpd_MsgGet( query, "Cseq" );
psz_cseq ? i_cseq = atoi( psz_cseq ) : 0;
httpd_MsgAdd( answer, "CSeq", "%d", i_cseq );
httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
if( psz_session )
{
if( p_media->p_vod->p_sys->i_session_timeout >= 0 )
httpd_MsgAdd( answer, "Session", "%s;timeout=%i", psz_session,
p_media->p_vod->p_sys->i_session_timeout );
else
httpd_MsgAdd( answer, "Session", "%s", psz_session );
}
return VLC_SUCCESS;
}
static int RtspCallbackES( httpd_callback_sys_t *p_args, httpd_client_t *cl,
httpd_message_t *answer,
const httpd_message_t *query )
{
media_es_t *p_es = (media_es_t*)p_args;
vod_media_t *p_media = p_es->p_media;
vod_t *p_vod = p_media->p_vod;
rtsp_client_t *p_rtsp = NULL;
const char *psz_transport = NULL;
const char *psz_playnow = NULL; /* support option: x-playNow */
const char *psz_session = NULL;
const char *psz_position = NULL;
const char *psz_cseq = NULL;
int i_cseq = 0;
if( answer == NULL || query == NULL ) return VLC_SUCCESS;
msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
answer->i_proto = HTTPD_PROTO_RTSP;
answer->i_version = query->i_version;
answer->i_type = HTTPD_MSG_ANSWER;
answer->i_body = 0;
answer->p_body = NULL;
switch( query->i_type )
{
case HTTPD_MSG_SETUP:
psz_playnow = httpd_MsgGet( query, "x-playNow" );
psz_transport = httpd_MsgGet( query, "Transport" );
msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
if( strstr( psz_transport, "unicast" ) &&
strstr( psz_transport, "client_port=" ) )
{
rtsp_client_t *p_rtsp = NULL;
rtsp_client_es_t *p_rtsp_es = NULL;
char ip[NI_MAXNUMERICHOST];
int i_port = atoi( strstr( psz_transport, "client_port=" ) +
strlen("client_port=") );
if( httpd_ClientIP( cl, ip, NULL ) == NULL )
{
answer->i_status = 500;
answer->i_body = 0;
answer->p_body = NULL;
break;
}
msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
ip, i_port );
psz_session = httpd_MsgGet( query, "Session" );
if( !psz_session || !*psz_session )
{
char *psz_new;
if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
{
answer->i_status = 503;
answer->i_body = 0;
answer->p_body = NULL;
break;
}
#warning Session ID should be securely random (spoofing risk)
if( asprintf( &psz_new, "%lu", vlc_mrand48() ) < 0 )
return VLC_ENOMEM;
psz_session = psz_new;
p_rtsp = RtspClientNew( p_media, psz_new );
if( !p_rtsp )
{
answer->i_status = 454;
answer->i_body = 0;
answer->p_body = NULL;
break;
}
}
else
{
p_rtsp = RtspClientGet( p_media, psz_session );
if( !p_rtsp )
{
answer->i_status = 454;
answer->i_body = 0;
answer->p_body = NULL;
break;
}
}
p_rtsp_es = malloc( sizeof(rtsp_client_es_t) );
if( !p_rtsp_es )
{
answer->i_status = 500;
answer->i_body = 0;
answer->p_body = NULL;
break;
}
p_rtsp_es->i_port = i_port;
p_rtsp_es->p_media_es = p_es;
TAB_APPEND( p_rtsp->i_es, p_rtsp->es, p_rtsp_es );
answer->i_status = 200;
answer->i_body = 0;
answer->p_body = NULL;
if( p_media->b_raw )
{
if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
{
httpd_MsgAdd( answer, "Transport",
"MP2T/H2221/UDP;unicast;client_port=%d-%d",
p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
}
else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
{
httpd_MsgAdd( answer, "Transport",
"RAW/RAW/UDP;unicast;client_port=%d-%d",
p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
}
}
else
{
httpd_MsgAdd( answer, "Transport",
"RTP/AVP/UDP;unicast;client_port=%d-%d",
p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
}
}
else /* TODO strstr( psz_transport, "interleaved" ) ) */
{
answer->i_status = 461;
answer->i_body = 0;
answer->p_body = NULL;
}
/* Intentional fall-through on x-playNow option in RTSP request */
if( !psz_playnow )
break;
case HTTPD_MSG_PLAY:
/* This is kind of a kludge. Should we only support Aggregate
* Operations ? */
psz_session = httpd_MsgGet( query, "Session" );
msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
p_rtsp = RtspClientGet( p_media, psz_session );
psz_position = httpd_MsgGet( query, "Range" );
if( psz_position ) psz_position = strstr( psz_position, "npt=" );
if( psz_position )
{
int64_t i_time = ParseNPT (psz_position + 4);
msg_Dbg( p_vod, "seeking request: %s", psz_position );
CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
psz_session, i_time, 0.0, NULL );
}
if( !psz_playnow )
{
answer->i_status = 200;
answer->i_body = 0;
answer->p_body = NULL;
}
break;
case HTTPD_MSG_TEARDOWN:
answer->i_status = 200;
answer->i_body = 0;
answer->p_body = NULL;
psz_session = httpd_MsgGet( query, "Session" );
msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
p_rtsp = RtspClientGet( p_media, psz_session );
if( !p_rtsp ) break;
for( int i = 0; i < p_rtsp->i_es; i++ )
{
if( p_rtsp->es[i]->p_media_es == p_es )
{
TAB_REMOVE( p_rtsp->i_es, p_rtsp->es, p_rtsp->es[i] );
break;
}
}
if( !p_rtsp->i_es )
{
CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
0, 0.0, NULL );
RtspClientDel( p_media, p_rtsp );
}
break;
case HTTPD_MSG_PAUSE:
/* This is kind of a kludge. Should we only support Aggregate
* Operations ? */
psz_session = httpd_MsgGet( query, "Session" );
msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
p_rtsp = RtspClientGet( p_media, psz_session );
if( !p_rtsp ) break;
CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
0, 0.0, NULL );
answer->i_status = 200;
answer->i_body = 0;
answer->p_body = NULL;
break;
default:
return VLC_EGENERIC;
break;
}
httpd_MsgAdd( answer, "Server", "VLC/%s", VERSION );
httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
psz_cseq = httpd_MsgGet( query, "Cseq" );
if (psz_cseq)
i_cseq = atoi( psz_cseq );
else
i_cseq = 0;
httpd_MsgAdd( answer, "Cseq", "%d", i_cseq );
httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
if( psz_session )
httpd_MsgAdd( answer, "Session", "%s"/*;timeout=5*/, psz_session );
return VLC_SUCCESS;
}
/*****************************************************************************
* SDPGenerate: TODO
* FIXME: need to be moved to a common place ?
*****************************************************************************/
static char *SDPGenerate( const vod_media_t *p_media, httpd_client_t *cl )
{
char *psz_sdp, ip[NI_MAXNUMERICHOST];
const char *psz_control;
int port;
if( httpd_ServerIP( cl, ip, &port ) == NULL )
return NULL;
bool ipv6 = ( strchr( ip, ':' ) != NULL );
psz_control = ipv6 ? p_media->psz_rtsp_control_v6
: p_media->psz_rtsp_control_v4;
/* Dummy destination address for RTSP */
struct sockaddr_storage dst;
socklen_t dstlen = ipv6 ? sizeof( struct sockaddr_in6 )
: sizeof( struct sockaddr_in );
memset (&dst, 0, dstlen);
dst.ss_family = ipv6 ? AF_INET6 : AF_INET;
#ifdef HAVE_SA_LEN
dst.ss_len = dstlen;
#endif
psz_sdp = vlc_sdp_Start( VLC_OBJECT( p_media->p_vod ), "sout-rtp-",
NULL, 0, (struct sockaddr *)&dst, dstlen );
if( psz_sdp == NULL )
return NULL;
if( p_media->i_length > 0 )
{
lldiv_t d = lldiv( p_media->i_length / 1000, 1000 );
sdp_AddAttribute( &psz_sdp, "range","npt=0-%lld.%03u", d.quot,
(unsigned)d.rem );
}
for( int i = 0; i < p_media->i_es; i++ )
{
media_es_t *p_es = p_media->es[i];
const char *mime_major; /* major MIME type */
switch( p_es->fmt.i_cat )
{
case VIDEO_ES:
mime_major = "video";
break;
case AUDIO_ES:
mime_major = "audio";
break;
case SPU_ES:
mime_major = "text";
break;
default:
continue;
}
sdp_AddMedia( &psz_sdp, mime_major, "RTP/AVP", 0 /* p_es->i_port */,
p_es->i_payload_type, false, 0,
p_es->psz_ptname, p_es->i_clock_rate, p_es->i_channels,
p_es->psz_fmtp );
sdp_AddAttribute( &psz_sdp, "control", psz_control, ip, port, i );
}
return psz_sdp;
}
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