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/*****************************************************************************
* delay.c: delay a stream
*****************************************************************************
* Copyright © 2014 VLC authors and VideoLAN
*
* Authors: Ilkka Ollakka <ileoo at videolan dot 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_plugin.h>
#include <vlc_sout.h>
#include <vlc_block.h>
#include <vlc_md5.h>
#include <vlc_fs.h>
/*****************************************************************************
* Module descriptor
*****************************************************************************/
#define OUTPUT_TEXT N_("Output file")
#define OUTPUT_LONGTEXT N_( \
"Writes stats to file instead of stdout" )
#define PREFIX_TEXT N_("Prefix to show on output line")
static int Open ( vlc_object_t * );
static void Close ( vlc_object_t * );
#define SOUT_CFG_PREFIX "sout-stats-"
vlc_module_begin()
set_shortname( N_("Stats"))
set_description( N_("Writes statistic info about stream"))
set_capability( "sout stream", 0 )
add_shortcut( "stats" )
set_category( CAT_SOUT )
set_subcategory( SUBCAT_SOUT_STREAM )
set_callbacks( Open, Close )
add_string( SOUT_CFG_PREFIX "output", "", OUTPUT_TEXT,OUTPUT_LONGTEXT, false );
add_string( SOUT_CFG_PREFIX "prefix", "stats", PREFIX_TEXT,PREFIX_TEXT, false );
vlc_module_end()
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static const char *ppsz_sout_options[] = {
"output", "prefix", NULL
};
static sout_stream_id_sys_t *Add ( sout_stream_t *, es_format_t * );
static int Del ( sout_stream_t *, sout_stream_id_sys_t * );
static int Send ( sout_stream_t *, sout_stream_id_sys_t *, block_t * );
struct sout_stream_sys_t
{
FILE *output;
char *prefix;
};
struct sout_stream_id_sys_t
{
int id;
uint64_t segment_number;
void *next_id;
const char *type;
mtime_t previous_dts,track_duration;
struct md5_s hash;
};
/*****************************************************************************
* Open:
*****************************************************************************/
static int Open( vlc_object_t *p_this )
{
sout_stream_t *p_stream = (sout_stream_t*)p_this;
sout_stream_sys_t *p_sys;
char *outputFile;
p_sys = calloc( 1, sizeof( sout_stream_sys_t ) );
if( !p_sys )
return VLC_ENOMEM;
config_ChainParse( p_stream, SOUT_CFG_PREFIX, ppsz_sout_options,
p_stream->p_cfg );
outputFile = var_InheritString( p_stream, SOUT_CFG_PREFIX "output" );
if( outputFile )
{
p_sys->output = vlc_fopen( outputFile, "wt" );
if( !p_sys->output )
{
msg_Err( p_stream, "Unable to open file '%s' for writing", outputFile );
free( p_sys );
free( outputFile );
return VLC_EGENERIC;
} else {
fprintf( p_sys->output,"#prefix\ttrack\ttype\tsegment_number\tdts_difference\tlength\tmd5\n");
}
free( outputFile );
}
p_sys->prefix = var_InheritString( p_stream, SOUT_CFG_PREFIX "prefix" );
p_stream->p_sys = p_sys;
p_stream->pf_add = Add;
p_stream->pf_del = Del;
p_stream->pf_send = Send;
return VLC_SUCCESS;
}
/*****************************************************************************
* Close:
*****************************************************************************/
static void Close( vlc_object_t * p_this )
{
sout_stream_t *p_stream = (sout_stream_t*)p_this;
sout_stream_sys_t *p_sys = (sout_stream_sys_t *)p_stream->p_sys;
if( p_sys->output )
fclose( p_sys->output );
free( p_sys->prefix );
free( p_sys );
}
static sout_stream_id_sys_t * Add( sout_stream_t *p_stream, es_format_t *p_fmt )
{
sout_stream_sys_t *p_sys = (sout_stream_sys_t *)p_stream->p_sys;
sout_stream_id_sys_t *id;
id = malloc( sizeof( sout_stream_id_sys_t ) );
if( unlikely( !id ) )
return NULL;
id->id = p_fmt->i_id;
switch( p_fmt->i_cat)
{
case VIDEO_ES:
id->type = "Video";
break;
case AUDIO_ES:
id->type = "Audio";
break;
case SPU_ES:
id->type = "SPU";
break;
default:
id->type = "Data";
break;
}
id->next_id = NULL;
id->segment_number = 0;
id->previous_dts = VLC_TS_INVALID;
id->track_duration = 0;
InitMD5( &id->hash );
msg_Dbg( p_stream, "%s: Adding track type:%s id:%d", p_sys->prefix, id->type, id->id);
if( p_stream->p_next )
id->next_id = sout_StreamIdAdd( p_stream->p_next, p_fmt );
return id;
}
static int Del( sout_stream_t *p_stream, sout_stream_id_sys_t *id )
{
sout_stream_sys_t *p_sys = (sout_stream_sys_t *)p_stream->p_sys;
EndMD5( &id->hash );
char *outputhash = psz_md5_hash( &id->hash );
unsigned int num,den;
vlc_ureduce( &num, &den, id->track_duration, id->segment_number, 0 );
msg_Dbg( p_stream, "%s: Removing track type:%s id:%d", p_sys->prefix, id->type, id->id );
if( p_sys->output )
{
fprintf( p_sys->output,"#%s: final type:%s id:%d segments:%"PRIu64" total_duration:%"PRId64" avg_track:%d/%d md5:%16s\n",
p_sys->prefix, id->type, id->id, id->segment_number, id->track_duration, num, den, outputhash );
} else {
msg_Info( p_stream, "%s: final type:%s id:%d segments:%"PRIu64" total_duration:%"PRId64" avg_track:%d/%d md5:%16s",
p_sys->prefix, id->type, id->id, id->segment_number, id->track_duration, num, den, outputhash );
}
free( outputhash );
if( id->next_id ) sout_StreamIdDel( p_stream->p_next, id->next_id );
free( id );
return VLC_SUCCESS;
}
static int Send( sout_stream_t *p_stream, sout_stream_id_sys_t *id,
block_t *p_buffer )
{
sout_stream_sys_t *p_sys = (sout_stream_sys_t *)p_stream->p_sys;
struct md5_s hash;
block_t *p_block = p_buffer;
while ( p_block != NULL )
{
InitMD5( &hash );
AddMD5( &hash, p_block->p_buffer, p_block->i_buffer );
AddMD5( &id->hash, p_block->p_buffer, p_block->i_buffer );
EndMD5( &hash );
char *outputhash = psz_md5_hash( &hash );
/* We could just set p_sys->output to stdout and remove user of msg_Dbg
* if we don't need ability to output info to gui modules (like qt4 messages window
*/
mtime_t dts_difference = VLC_TS_INVALID;
if( likely( id->previous_dts != VLC_TS_INVALID ) )
dts_difference = p_block->i_dts - id->previous_dts;
if( p_sys->output )
{
/* Write data in a form that it's easy to plot for example with gnuplot*/
fprintf( p_sys->output, "%s\t%d\t%s\t%"PRIu64"\t%"PRId64"\t%"PRId64"\t%16s\n",
p_sys->prefix, id->id, id->type, ++id->segment_number, dts_difference,
p_block->i_length, outputhash );
} else {
msg_Dbg( p_stream, "%s: track:%d type:%s segment_number:%"PRIu64" dts_difference:%"PRId64" length:%"PRId64" md5:%16s",
p_sys->prefix, id->id, id->type, ++id->segment_number, dts_difference,
p_block->i_length, outputhash );
}
id->track_duration += p_block->i_length ? p_block->i_length : dts_difference;
free( outputhash );
id->previous_dts = p_block->i_dts;
p_block = p_block->p_next;
}
if( p_stream->p_next )
return sout_StreamIdSend( p_stream->p_next, id->next_id, p_buffer );
else
block_Release( p_buffer );
return VLC_SUCCESS;
}
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