/*****************************************************************************
* vlmshell.c: VLM interface plugin
*****************************************************************************
* Copyright (C) 2000-2005 VLC authors and VideoLAN
*
* Authors: Simon Latapie <garf@videolan.org>
* Laurent Aimar <fenrir@videolan.org>
* Gildas Bazin <gbazin@videolan.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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_arrays.h>
#include <stdio.h>
#include <ctype.h> /* tolower() */
#include <assert.h>
#include <vlc_vlm.h>
#ifdef ENABLE_VLM
#include <time.h> /* ctime() */
#include <limits.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <vlc_stream.h>
#include "vlm_internal.h"
#include <vlc_charset.h>
#include <vlc_fs.h>
#include <vlc_sout.h>
#include <vlc_memstream.h>
/*****************************************************************************
* Local prototypes.
*****************************************************************************/
/* */
static vlm_message_t *vlm_Show( vlm_t *, vlm_media_sys_t *, const char * );
VLC_MALLOC static char *Save( vlm_t * );
static int Load( vlm_t *, char * );
/* */
static vlm_media_sys_t *vlm_MediaSearch( vlm_t *, const char *);
static const char quotes[] = "\"'";
/**
* FindCommandEnd: look for the end of a possibly quoted string
* @return NULL on mal-formatted string,
* pointer past the last character otherwise.
*/
static const char *FindCommandEnd( const char *psz_sent )
{
unsigned char c, quote = 0;
while( (c = *psz_sent) != '\0' )
{
if( !quote )
{
if( strchr(quotes,c) ) // opening quote
quote = c;
else if( isspace(c) ) // non-escaped space
return psz_sent;
else if( c == '\\' )
{
psz_sent++; // skip escaped character
if( *psz_sent == '\0' )
return psz_sent;
}
}
else
{
if( c == quote ) // non-escaped matching quote
quote = 0;
else if( (quote == '"') && (c == '\\') )
{
psz_sent++; // skip escaped character
if (*psz_sent == '\0')
return NULL; // error, closing quote missing
}
}
psz_sent++;
}
// error (NULL) if we could not find a matching quote
return quote ? NULL : psz_sent;
}
/**
* Unescape a nul-terminated string.
* Note that in and out can be identical.
*
* @param out output buffer (at least <strlen (in) + 1> characters long)
* @param in nul-terminated string to be unescaped
*
* @return 0 on success, -1 on error.
*/
static int Unescape( char *out, const char *in )
{
unsigned char c, quote = 0;
bool param = false;
while( (c = *in++) != '\0' )
{
// Don't escape the end of the string if we find a '#'
// that's the beginning of a vlc command
// TODO: find a better solution
if( ( c == '#' && !quote ) || param )
{
param = true;
*out++ = c;
continue;
}
if( !quote )
{
if (strchr(quotes,c)) // opening quote
{
quote = c;
continue;
}
else if( c == '\\' )
{
switch (c = *in++)
{
case '"':
case '\'':
case '\\':
*out++ = c;
continue;
case '\0':
*out = '\0';
return 0;
}
if( isspace(c) )
{
*out++ = c;
continue;
}
/* None of the special cases - copy the backslash */
*out++ = '\\';
}
}
else
{
if( c == quote ) // non-escaped matching quote
{
quote = 0;
continue;
}
if( (quote == '"') && (c == '\\') )
{
switch( c = *in++ )
{
case '"':
case '\\':
*out++ = c;
continue;
case '\0': // should never happen
*out = '\0';
return - 1;
}
/* None of the special cases - copy the backslash */
*out++ = '\\';
}
}
*out++ = c;
}
*out = '\0';
return 0;
}
/*****************************************************************************
* ExecuteCommand: The main state machine
*****************************************************************************
* Execute a command which ends with '\0' (string)
*****************************************************************************/
static int ExecuteSyntaxError( const char *psz_cmd, vlm_message_t **pp_status )
{
*pp_status = vlm_MessageNew( psz_cmd, "Wrong command syntax" );
return VLC_EGENERIC;
}
static bool ExecuteIsMedia( vlm_t *p_vlm, const char *psz_name )
{
int64_t id;
if( !psz_name || vlm_ControlInternal( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) )
return false;
return true;
}
static int ExecuteDel( vlm_t *p_vlm, const char *psz_name, vlm_message_t **pp_status )
{
vlm_media_sys_t *p_media;
p_media = vlm_MediaSearch( p_vlm, psz_name );
if( p_media != NULL )
{
vlm_ControlInternal( p_vlm, VLM_DEL_MEDIA, p_media->cfg.id );
}
else if( !strcmp(psz_name, "media") )
{
vlm_ControlInternal( p_vlm, VLM_CLEAR_MEDIAS );
}
else if( !strcmp(psz_name, "all") )
{
vlm_ControlInternal( p_vlm, VLM_CLEAR_MEDIAS );
}
else
{
*pp_status = vlm_MessageNew( "del", "%s: media unknown", psz_name );
return VLC_EGENERIC;
}
*pp_status = vlm_MessageSimpleNew( "del" );
return VLC_SUCCESS;
}
static int ExecuteShow( vlm_t *p_vlm, const char *psz_name, vlm_message_t **pp_status )
{
vlm_media_sys_t *p_media;
if( !psz_name )
{
*pp_status = vlm_Show( p_vlm, NULL, NULL );
return VLC_SUCCESS;
}
p_media = vlm_MediaSearch( p_vlm, psz_name );
if( p_media != NULL )
*pp_status = vlm_Show( p_vlm, p_media, NULL );
else
*pp_status = vlm_Show( p_vlm, NULL, psz_name );
return VLC_SUCCESS;
}
static int ExecuteHelp( vlm_message_t **pp_status )
{
vlm_message_t *message_child;
#define MessageAdd( a ) \
vlm_MessageAdd( *pp_status, vlm_MessageSimpleNew( a ) );
#define MessageAddChild( a ) \
vlm_MessageAdd( message_child, vlm_MessageSimpleNew( a ) );
*pp_status = vlm_MessageSimpleNew( "help" );
message_child = MessageAdd( "Commands Syntax:" );
MessageAddChild( "new (name) broadcast [properties]" );
MessageAddChild( "setup (name) (properties)" );
MessageAddChild( "show [(name)|media]" );
MessageAddChild( "del (name)|all|media" );
MessageAddChild( "control (name) [instance_name] (command)" );
MessageAddChild( "save (config_file)" );
MessageAddChild( "export" );
MessageAddChild( "load (config_file)" );
message_child = MessageAdd( "Media Proprieties Syntax:" );
MessageAddChild( "input (input_name)" );
MessageAddChild( "inputdel (input_name)|all" );
MessageAddChild( "inputdeln input_number" );
MessageAddChild( "output (output_name)" );
MessageAddChild( "option (option_name)[=value]" );
MessageAddChild( "enabled|disabled" );
MessageAddChild( "loop|unloop" );
message_child = MessageAdd( "Control Commands Syntax:" );
MessageAddChild( "play [input_number]" );
MessageAddChild( "pause" );
MessageAddChild( "stop" );
MessageAddChild( "seek [+-](percentage) | [+-](seconds)s | [+-](milliseconds)ms" );
return VLC_SUCCESS;
}
static int ExecuteControl( vlm_t *p_vlm, const char *psz_name, const int i_arg, char ** ppsz_ arg, vlm_message_t **pp_status )
{
vlm_media_sys_t *p_media;
const char *psz_control = NULL;
const char *psz_instance = NULL;
const char *psz_argument = NULL;
int i_index;
int i_result;
if( !ExecuteIsMedia( p_vlm, psz_name ) )
{
*pp_status = vlm_MessageNew( "control", "%s: media unknown", psz_name );
return VLC_EGENERIC;
}
assert( i_arg > 0 );
#define IS(txt) ( !strcmp( ppsz_arg[i_index], (txt) ) )
i_index = 0;
if( !IS("play") && !IS("stop") && !IS("pause") && !IS("seek") )
{
i_index = 1;
psz_instance = ppsz_arg[0];
if( i_index >= i_arg || ( !IS("play") && !IS("stop") && !IS("pause") && !IS("seek") ) )
return ExecuteSyntaxError( "control", pp_status );
}
#undef IS
psz_control = ppsz_arg[i_index];
if( i_index+1 < i_arg )
psz_argument = ppsz_arg[i_index+1];
p_media = vlm_MediaSearch( p_vlm, psz_name );
assert( p_media );
if( !strcmp( psz_control, "play" ) )
{
int i_input_index = 0;
int i;
if( ( psz_argument && sscanf(psz_argument, "%d", &i) == 1 ) && i > 0 && i-1 < p_media->cfg.i_input )
{
i_input_index = i-1;
}
else if( psz_argument )
{
int j;
vlm_media_t *p_cfg = &p_media->cfg;
for ( j=0; j < p_cfg->i_input; j++)
{
if( !strcmp( p_cfg->ppsz_input[j], psz_argument ) )
{
i_input_index = j;
break;
}
}
}
i_result = vlm_ControlInternal( p_vlm, VLM_START_MEDIA_BROADCAST_INSTANCE, p_media->cfg.id, psz_instance, i_input_index );
}
else if( !strcmp( psz_control, "seek" ) )
{
if( psz_argument )
{
bool b_relative;
if( psz_argument[0] == '+' || psz_argument[0] == '-' )
b_relative = true;
else
b_relative = false;
if( strstr( psz_argument, "ms" ) || strstr( psz_argument, "s" ) )
{
/* Time (ms or s) */
int64_t i_new_time;
if( strstr( psz_argument, "ms" ) )
i_new_time = INT64_C(1000) * atoi( psz_argument );
else
i_new_time = INT64_C(1000000) * atoi( psz_argument );
if( b_relative )
{
int64_t i_time = 0;
vlm_ControlInternal( p_vlm, VLM_GET_MEDIA_INSTANCE_TIME, p_media->cfg.id, psz_instance, &i_time );
i_new_time += i_time;
}
if( i_new_time < 0 )
i_new_time = 0;
i_result = vlm_ControlInternal( p_vlm, VLM_SET_MEDIA_INSTANCE_TIME, p_media->cfg.id, psz_instance, i_new_time );
}
else
{
/* Percent */
double d_new_position = vlc_atof_c( psz_argument ) / 100.0;
if( b_relative )
{
double d_position = 0.0;
vlm_ControlInternal( p_vlm, VLM_GET_MEDIA_INSTANCE_POSITION, p_media->cfg.id, psz_instance, &d_position );
d_new_position += d_position;
}
if( d_new_position < 0.0 )
d_new_position = 0.0;
else if( d_new_position > 1.0 )
d_new_position = 1.0;
i_result = vlm_ControlInternal( p_vlm, VLM_SET_MEDIA_INSTANCE_POSITION, p_media->cfg.id, psz_instance, d_new_position );
}
}
else
{
i_result = VLC_EGENERIC;
}
}
else if( !strcmp( psz_control, "stop" ) )
{
i_result = vlm_ControlInternal( p_vlm, VLM_STOP_MEDIA_INSTANCE, p_media->cfg.id, psz_instance );
}
else if( !strcmp( psz_control, "pause" ) )
{
i_result = vlm_ControlInternal( p_vlm, VLM_PAUSE_MEDIA_INSTANCE, p_media->cfg.id, psz_instance );
}
else
{
i_result = VLC_EGENERIC;
}
if( i_result )
{
*pp_status = vlm_MessageNew( "control", "unknown error" );
return VLC_SUCCESS;
}
*pp_status = vlm_MessageSimpleNew( "control" );
return VLC_SUCCESS;
}
static int ExecuteExport( vlm_t *p_vlm, vlm_message_t **pp_status )
{
char *psz_export = Save( p_vlm );
*pp_status = vlm_MessageNew( "export", "%s", psz_export );
free( psz_export );
return VLC_SUCCESS;
}
static int ExecuteSave( vlm_t *p_vlm, const char *psz_file, vlm_message_t **pp_status )
{
FILE *f = vlc_fopen( psz_file, "wt" );
char *psz_save = NULL;
if( !f )
goto error;
psz_save = Save( p_vlm );
if( psz_save == NULL )
goto error;
if( fputs( psz_save, f ) == EOF )
goto error;
if( fclose( f ) )
{
f = NULL;
goto error;
}
free( psz_save );
*pp_status = vlm_MessageSimpleNew( "save" );
return VLC_SUCCESS;
error:
free( psz_save );
if( f )
fclose( f );
*pp_status = vlm_MessageNew( "save", "Unable to save to file");
return VLC_EGENERIC;
}
static int ExecuteLoad( vlm_t *p_vlm, const char *psz_path, vlm_message_t **pp_status )
{
int fd = vlc_open( psz_path, O_RDONLY|O_NONBLOCK );
if( fd == -1 )
{
*pp_status = vlm_MessageNew( "load", "Unable to load from file" );
return VLC_EGENERIC;
}
struct stat st;
char *psz_buffer = NULL;
if( fstat( fd, &st ) || !S_ISREG( st.st_mode )
|| st.st_size >= SSIZE_MAX
|| ((psz_buffer = malloc( st.st_size + 1 )) == NULL)
|| read( fd, psz_buffer, st.st_size ) < (ssize_t)st.st_size )
{
free( psz_buffer );
vlc_close( fd );
*pp_status = vlm_MessageNew( "load", "Read file error" );
return VLC_EGENERIC;
}
vlc_close( fd );
psz_buffer[st.st_size] = '\0';
if( Load( p_vlm, psz_buffer ) )
{
free( psz_buffer );
*pp_status = vlm_MessageNew( "load", "Error while loading file" );
return VLC_EGENERIC;
}
free( psz_buffer );
*pp_status = vlm_MessageSimpleNew( "load" );
return VLC_SUCCESS;
}
static int ExecuteMediaProperty( vlm_t *p_vlm, int64_t id, bool b_new,
const int i_property, char *ppsz_property[], vlm_message_t **pp_status )
{
const char *psz_cmd = b_new ? "new" : "setup";
vlm_media_t *p_cfg = NULL;
int i_result;
int i;
#undef ERROR
#undef MISSING
#define ERROR( txt ) do { *pp_status = vlm_MessageNew( psz_cmd, txt); goto error; } while(0)
if( vlm_ControlInternal( p_vlm, VLM_GET_MEDIA, id, &p_cfg ) )
ERROR( "unknown media" );
#define MISSING(cmd) do { if( !psz_value ) ERROR( "missing argument for " cmd ); } while(0)
for( i = 0; i < i_property; i++ )
{
const char *psz_option = ppsz_property[i];
const char *psz_value = i+1 < i_property ? ppsz_property[i+1] : NULL;
if( !strcmp( psz_option, "enabled" ) )
{
p_cfg->b_enabled = true;
}
else if( !strcmp( psz_option, "disabled" ) )
{
p_cfg->b_enabled = false;
}
else if( !strcmp( psz_option, "input" ) )
{
MISSING( "input" );
TAB_APPEND( p_cfg->i_input, p_cfg->ppsz_input, strdup(psz_value) );
i++;
}
else if( !strcmp( psz_option, "inputdel" ) && psz_value && !strcmp( psz_value, "all" ) )
{
while( p_cfg->i_input > 0 )
TAB_REMOVE( p_cfg->i_input, p_cfg->ppsz_input, p_cfg->ppsz_input[0] );
i++;
}
else if( !strcmp( psz_option, "inputdel" ) )
{
int j;
MISSING( "inputdel" );
for( j = 0; j < p_cfg->i_input; j++ )
{
if( !strcmp( p_cfg->ppsz_input[j], psz_value ) )
{
TAB_REMOVE( p_cfg->i_input, p_cfg->ppsz_input, p_cfg->ppsz_input[j] );
break;
}
}
i++;
}
else if( !strcmp( psz_option, "inputdeln" ) )
{
MISSING( "inputdeln" );
int idx = atoi( psz_value );
if( idx > 0 && idx <= p_cfg->i_input )
TAB_REMOVE( p_cfg->i_input, p_cfg->ppsz_input, p_cfg->ppsz_input[idx-1] );
i++;
}
else if( !strcmp( psz_option, "output" ) )
{
MISSING( "output" );
free( p_cfg->psz_output );
p_cfg->psz_output = *psz_value ? strdup( psz_value ) : NULL;
i++;
}
else if( !strcmp( psz_option, "option" ) )
{
MISSING( "option" );
TAB_APPEND( p_cfg->i_option, p_cfg->ppsz_option, strdup( psz_value ) );
i++;
}
else if( !strcmp( psz_option, "loop" ) )
{
p_cfg->broadcast.b_loop = true;
}
else if( !strcmp( psz_option, "unloop" ) )
{
p_cfg->broadcast.b_loop = false;
}
else
{
fprintf( stderr, "PROP: name=%s unknown\n", psz_option );
ERROR( "Wrong command syntax" );
}
}
#undef MISSING
#undef ERROR
/* */
i_result = vlm_ControlInternal( p_vlm, VLM_CHANGE_MEDIA, p_cfg );
vlm_media_Delete( p_cfg );
*pp_status = vlm_MessageSimpleNew( psz_cmd );
return i_result;
error:
if( p_cfg )
{
if( b_new )
vlm_ControlInternal( p_vlm, VLM_DEL_MEDIA, p_cfg->id );
vlm_media_Delete( p_cfg );
}
return VLC_EGENERIC;
}
static int ExecuteNew( vlm_t *p_vlm, const char *psz_name, const char *psz_type, const int i_property, char *ppsz_property[], vlm_message_t **pp_status )
{
/* Check name */
if( !strcmp( psz_name, "all" ) || !strcmp( psz_name, "media" ) )
{
*pp_status = vlm_MessageNew( "new", "\"all\" and \"media\" are reserved names" );
return VLC_EGENERIC;
}
if( ExecuteIsMedia( p_vlm, psz_name ) )
{
*pp_status = vlm_MessageNew( "new", "%s: Name already in use", psz_name );
return VLC_EGENERIC;
}
/* */
if( !strcmp( psz_type, "broadcast" ) )
{
vlm_media_t cfg;
int64_t id;
vlm_media_Init( &cfg );
cfg.psz_name = strdup( psz_name );
if( vlm_ControlInternal( p_vlm, VLM_ADD_MEDIA, &cfg, &id ) )
{
vlm_media_Clean( &cfg );
*pp_status = vlm_MessageNew( "new", "could not create media" );
return VLC_EGENERIC;
}
vlm_media_Clean( &cfg );
return ExecuteMediaProperty( p_vlm, id, true, i_property, ppsz_property, pp_status );
}
else
{
*pp_status = vlm_MessageNew( "new", "%s: unsupported type", psz_type );
return VLC_EGENERIC;
}
}
static int ExecuteSetup( vlm_t *p_vlm, const char *psz_name, const int i_property, char *ppsz_property[], vlm_message_t **pp_status )
{
if( ExecuteIsMedia( p_vlm, psz_name ) )
{
int64_t id;
if( vlm_ControlInternal( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) )
goto error;
return ExecuteMediaProperty( p_vlm, id, false, i_property, ppsz_property, pp_status );
}
error:
*pp_status = vlm_MessageNew( "setup", "%s unknown", psz_name );
return VLC_EGENERIC;
}
int ExecuteCommand( vlm_t *p_vlm, const char *psz_command,
vlm_message_t **pp_message )
{
size_t i_command = 0;
size_t i_command_len = strlen( psz_command );
char *buf = malloc( i_command_len + 1 ), *psz_buf = buf;
size_t i_ppsz_command_len = (3 + (i_command_len + 1) / 2);
char **ppsz_command = vlc_alloc( i_ppsz_command_len, sizeof(char *) );
vlm_message_t *p_message = NULL;
int i_ret = 0;
if( !psz_buf || !ppsz_command )
{
p_message = vlm_MessageNew( "Memory error",
"allocation failed for command of length %zu",
i_command_len );
goto error;
}
/* First, parse the line and cut it */
while( *psz_command != '\0' )
{
const char *psz_temp;
if(isspace ((unsigned char)*psz_command))
{
psz_command++;
continue;
}
/* support for comments */
if( i_command == 0 && *psz_command == '#')
{
p_message = vlm_MessageSimpleNew( "" );
goto success;
}
psz_temp = FindCommandEnd( psz_command );
if( psz_temp == NULL )
{
p_message = vlm_MessageNew( "Incomplete command", "%s", psz_command );
goto error;
}
assert (i_command < i_ppsz_command_len);
ppsz_command[i_command] = psz_buf;
memcpy (psz_buf, psz_command, psz_temp - psz_command);
psz_buf[psz_temp - psz_command] = '\0';
Unescape (psz_buf, psz_buf);
i_command++;
psz_buf += psz_temp - psz_command + 1;
psz_command = psz_temp;
assert (buf + i_command_len + 1 >= psz_buf);
}
/*
* And then Interpret it
*/
#define IF_EXECUTE( name, check, cmd ) if( !strcmp(ppsz_command[0], name ) ) { if( (check) ) goto syntax_error; if( (cmd) ) goto error; goto success; }
if( i_command == 0 )
{
p_message = vlm_MessageSimpleNew( "" );
goto success;
}
else IF_EXECUTE( "del", (i_command != 2), ExecuteDel(p_vlm, ppsz_command[1], &p_message) )
else IF_EXECUTE( "show", (i_command > 2), ExecuteShow(p_vlm, i_command > 1 ? ppsz_command[1] : NULL, &p_message) )
else IF_EXECUTE( "help", (i_command != 1), ExecuteHelp( &p_message ) )
else IF_EXECUTE( "control", (i_command < 3), ExecuteControl(p_vlm, ppsz_command[1], i_command - 2, &ppsz_command[2], &p_message) )
else IF_EXECUTE( "save", (i_command != 2), ExecuteSave(p_vlm, ppsz_command[1], &p_message) )
else IF_EXECUTE( "export", (i_command != 1), ExecuteExport(p_vlm, &p_message) )
else IF_EXECUTE( "load", (i_command != 2), ExecuteLoad(p_vlm, ppsz_command[1], &p_message) )
else IF_EXECUTE( "new", (i_command < 3), ExecuteNew(p_vlm, ppsz_command[1], ppsz_command[2], i_command-3, &ppsz_command[3], &p_message) )
else IF_EXECUTE( "setup", (i_command < 2), ExecuteSetup(p_vlm, ppsz_command[1], i_command-2, &ppsz_command[2], &p_message) )
else
{
p_message = vlm_MessageNew( ppsz_command[0], "Unknown VLM command" );
goto error;
}
#undef IF_EXECUTE
success:
*pp_message = p_message;
free( buf );
free( ppsz_command );
return VLC_SUCCESS;
syntax_error:
i_ret = ExecuteSyntaxError( ppsz_command[0], pp_message );
free( buf );
free( ppsz_command );
return i_ret;
error:
*pp_message = p_message;
free( buf );
free( ppsz_command );
return VLC_EGENERIC;
}
/*****************************************************************************
* Media handling
*****************************************************************************/
vlm_media_sys_t *vlm_MediaSearch( vlm_t *vlm, const char *psz_name )
{
int i;
for( i = 0; i < vlm->i_media; i++ )
{
if( strcmp( psz_name, vlm->media[i]->cfg.psz_name ) == 0 )
return vlm->media[i];
}
return NULL;
}
/*****************************************************************************
* Message handling functions
*****************************************************************************/
vlm_message_t *vlm_MessageSimpleNew( const char *psz_name )
{
if( !psz_name ) return NULL;
vlm_message_t *p_message = malloc( sizeof(*p_message) );
if( !p_message )
return NULL;
p_message->psz_name = strdup( psz_name );
if( !p_message->psz_name )
{
free( p_message );
return NULL;
}
p_message->psz_value = NULL;
p_message->i_child = 0;
p_message->child = NULL;
return p_message;
}
vlm_message_t *vlm_MessageNew( const char *psz_name,
const char *psz_format, ... )
{
vlm_message_t *p_message = vlm_MessageSimpleNew( psz_name );
va_list args;
if( !p_message )
return NULL;
assert( psz_format );
va_start( args, psz_format );
if( vasprintf( &p_message->psz_value, psz_format, args ) == -1 )
p_message->psz_value = NULL;
va_end( args );
if( !p_message->psz_value )
{
vlm_MessageDelete( p_message );
return NULL;
}
return p_message;
}
void vlm_MessageDelete( vlm_message_t *p_message )
{
free( p_message->psz_name );
free( p_message->psz_value );
while( p_message->i_child-- )
vlm_MessageDelete( p_message->child[p_message->i_child] );
free( p_message->child );
free( p_message );
}
/* Add a child */
vlm_message_t *vlm_MessageAdd( vlm_message_t *p_message,
vlm_message_t *p_child )
{
if( p_message == NULL ) return NULL;
if( p_child )
{
TAB_APPEND( p_message->i_child, p_message->child, p_child );
}
return p_child;
}
/*****************************************************************************
* Misc utility functions
*****************************************************************************/
static vlm_message_t *vlm_ShowMedia( vlm_media_sys_t *p_media )
{
vlm_media_t *p_cfg = &p_media->cfg;
vlm_message_t *p_msg;
vlm_message_t *p_msg_sub;
int i;
p_msg = vlm_MessageSimpleNew( p_cfg->psz_name );
vlm_MessageAdd( p_msg,
vlm_MessageNew( "type", "broadcast" ) );
vlm_MessageAdd( p_msg,
vlm_MessageNew( "enabled", p_cfg->b_enabled ? "yes" : "no" ) );
vlm_MessageAdd( p_msg,
vlm_MessageNew( "loop", p_cfg->broadcast.b_loop ? "yes" : "no" ) );
p_msg_sub = vlm_MessageAdd( p_msg, vlm_MessageSimpleNew( "inputs" ) );
for( i = 0; i < p_cfg->i_input; i++ )
{
char *psz_tmp;
if( asprintf( &psz_tmp, "%d", i+1 ) != -1 )
{
vlm_MessageAdd( p_msg_sub,
vlm_MessageNew( psz_tmp, "%s", p_cfg->ppsz_input[i] ) );
free( psz_tmp );
}
}
vlm_MessageAdd( p_msg,
vlm_MessageNew( "output", "%s", p_cfg->psz_output ? p_cfg->psz_output : "" ) );
p_msg_sub = vlm_MessageAdd( p_msg, vlm_MessageSimpleNew( "options" ) );
for( i = 0; i < p_cfg->i_option; i++ )
vlm_MessageAdd( p_msg_sub, vlm_MessageSimpleNew( p_cfg->ppsz_option[i] ) );
p_msg_sub = vlm_MessageAdd( p_msg, vlm_MessageSimpleNew( "instances" ) );
for( i = 0; i < p_media->i_instance; i++ )
{
vlm_media_instance_sys_t *p_instance = p_media->instance[i];
vlm_message_t *p_msg_instance;
vlc_player_Lock(p_instance->player);
enum vlc_player_state state = vlc_player_GetState(p_instance->player);
float position = vlc_player_GetPosition(p_instance->player);
vlc_tick_t time = vlc_player_GetTime(p_instance->player);
vlc_tick_t length = vlc_player_GetLength(p_instance->player);
float rate = vlc_player_GetRate(p_instance->player);
ssize_t title = vlc_player_GetSelectedTitleIdx(p_instance->player);
ssize_t chapter = vlc_player_GetSelectedChapterIdx(p_instance->player);
bool can_seek = vlc_player_CanSeek(p_instance->player);
vlc_player_Unlock(p_instance->player);
p_msg_instance = vlm_MessageAdd( p_msg_sub, vlm_MessageSimpleNew( "instance" ) );
vlm_MessageAdd( p_msg_instance,
vlm_MessageNew( "name" , "%s", p_instance->psz_name ? p_instance->psz_name : "default" ) );
vlm_MessageAdd( p_msg_instance,
vlm_MessageNew( "state",
state == VLC_PLAYER_STATE_PLAYING ? "playing" :
state == VLC_PLAYER_STATE_PAUSED ? "paused" :
"stopped" ) );
/* FIXME should not do that this way */
#define APPEND_INPUT_INFO( key, format, value ) \
vlm_MessageAdd( p_msg_instance, vlm_MessageNew( key, format, value ) )
APPEND_INPUT_INFO( "position", "%f", position );
APPEND_INPUT_INFO( "time", "%"PRId64, time );
APPEND_INPUT_INFO( "length", "%"PRId64, length );
APPEND_INPUT_INFO( "rate", "%f", rate );
APPEND_INPUT_INFO( "title", "%zd", title );
APPEND_INPUT_INFO( "chapter", "%zd", chapter );
APPEND_INPUT_INFO( "can-seek", "%d", can_seek );
#undef APPEND_INPUT_INFO
vlm_MessageAdd( p_msg_instance, vlm_MessageNew( "playlistindex",
"%d", p_instance->i_index + 1 ) );
}
return p_msg;
}
static vlm_message_t *vlm_Show( vlm_t *vlm, vlm_media_sys_t *media,
const char *psz_filter )
{
if( media != NULL )
{
vlm_message_t *p_msg = vlm_MessageSimpleNew( "show" );
if( p_msg )
vlm_MessageAdd( p_msg, vlm_ShowMedia( media ) );
return p_msg;
}
else if( psz_filter && !strcmp( psz_filter, "media" ) )
{
vlm_message_t *p_msg;
vlm_message_t *p_msg_child;
int i_broadcast = vlm->i_media;
p_msg = vlm_MessageSimpleNew( "show" );
p_msg_child = vlm_MessageAdd( p_msg, vlm_MessageNew( "media",
"( %d broadcast )", i_broadcast ) );
for( int i = 0; i < vlm->i_media; i++ )
vlm_MessageAdd( p_msg_child, vlm_ShowMedia( vlm->media[i] ) );
return p_msg;
}
else if( ( psz_filter == NULL ) && ( media == NULL ) )
{
return vlm_Show( vlm, NULL, "media" );
}
else
{
return vlm_MessageSimpleNew( "show" );
}
}
/*****************************************************************************
* Config handling functions
*****************************************************************************/
static int Load( vlm_t *vlm, char *file )
{
char *pf = file;
int i_line = 1;
while( *pf != '\0' )
{
vlm_message_t *message = NULL;
int i_end = 0;
while( pf[i_end] != '\n' && pf[i_end] != '\0' && pf[i_end] != '\r' )
{
i_end++;
}
if( pf[i_end] == '\r' || pf[i_end] == '\n' )
{
pf[i_end] = '\0';
i_end++;
if( pf[i_end] == '\n' ) i_end++;
}
if( *pf && ExecuteCommand( vlm, pf, &message ) )
{
if( message )
{
if( message->psz_value )
msg_Err( vlm, "Load error on line %d: %s: %s",
i_line, message->psz_name, message->psz_value );
vlm_MessageDelete( message );
}
return 1;
}
if( message ) vlm_MessageDelete( message );
pf += i_end;
i_line++;
}
return 0;
}
VLC_MALLOC static char *Save( vlm_t *vlm )
{
const char *psz_header = "\n"
"# VLC media player VLM command batch\n"
"# https://www.videolan.org/vlc/\n\n" ;
struct vlc_memstream stream;
vlc_memstream_open( &stream );
vlc_memstream_puts( &stream, psz_header );
for( int i = 0; i < vlm->i_media; i++ )
{
vlm_media_sys_t *media = vlm->media[i];
vlm_media_t *p_cfg = &media->cfg;
vlc_memstream_printf( &stream, "new %s broadcast %sabled",
p_cfg->psz_name,
p_cfg->b_enabled ? "en" : "dis" );
if( p_cfg->broadcast.b_loop )
vlc_memstream_puts( &stream, " loop" );
vlc_memstream_putc( &stream, '\n' );
for( int j = 0; j < p_cfg->i_input; j++ )
vlc_memstream_printf( &stream, "setup %s input \"%s\"\n",
p_cfg->psz_name, p_cfg->ppsz_input[j] );
if( p_cfg->psz_output )
vlc_memstream_printf( &stream, "setup %s output %s\n",
p_cfg->psz_name, p_cfg->psz_output );
for( int j = 0; j < p_cfg->i_option; j++ )
vlc_memstream_printf( &stream, "setup %s option %s\n",
p_cfg->psz_name, p_cfg->ppsz_option[j] );
}
if( vlc_memstream_close( &stream ) )
return NULL;
return stream.ptr;
}
#endif /* ENABLE_VLM */
¤ Dauer der Verarbeitung: 0.7 Sekunden
(vorverarbeitet am 2026-11-04)
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*© Formatika GbR, Deutschland
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