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/*****************************************************************************
* decoder.c: dummy decoder plugin for vlc.
*****************************************************************************
* Copyright (C) 2002 the VideoLAN team
* $Id: 956cfff459d093294d4a3ddab642946c414ac980 $
*
* Authors: Samuel Hocevar <sam@zoy.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_codec.h>
#include <vlc_fs.h>
#include <sys/types.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h> /* write(), close() */
#elif defined( WIN32 ) && !defined( UNDER_CE )
# include <io.h>
#endif
#ifdef HAVE_FCNTL_H
# include <fcntl.h>
#endif
#include <limits.h> /* PATH_MAX */
#include "dummy.h"
/*****************************************************************************
* decoder_sys_t : theora decoder descriptor
*****************************************************************************/
struct decoder_sys_t
{
int i_fd;
};
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static void *DecodeBlock( decoder_t *p_dec, block_t **pp_block );
/*****************************************************************************
* OpenDecoder: Open the decoder
*****************************************************************************/
static int OpenDecoderCommon( vlc_object_t *p_this, bool b_force_dump )
{
decoder_t *p_dec = (decoder_t*)p_this;
decoder_sys_t *p_sys;
char psz_file[ PATH_MAX ];
/* Allocate the memory needed to store the decoder's structure */
if( ( p_dec->p_sys = p_sys =
(decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
{
return VLC_ENOMEM;
}
snprintf( psz_file, sizeof( psz_file), "stream.%p", p_dec );
#ifndef UNDER_CE
if( !b_force_dump )
{
b_force_dump = var_CreateGetBool( p_dec, "dummy-save-es" );
}
if( b_force_dump )
{
p_sys->i_fd = vlc_open( psz_file, O_WRONLY | O_CREAT | O_TRUNC, 00644 );
if( p_sys->i_fd == -1 )
{
msg_Err( p_dec, "cannot create `%s'", psz_file );
free( p_sys );
return VLC_EGENERIC;
}
msg_Dbg( p_dec, "dumping stream to file `%s'", psz_file );
}
else
#endif
{
p_sys->i_fd = -1;
}
/* Set callbacks */
p_dec->pf_decode_video = (picture_t *(*)(decoder_t *, block_t **))
DecodeBlock;
p_dec->pf_decode_audio = (aout_buffer_t *(*)(decoder_t *, block_t **))
DecodeBlock;
p_dec->pf_decode_sub = (subpicture_t *(*)(decoder_t *, block_t **))
DecodeBlock;
es_format_Copy( &p_dec->fmt_out, &p_dec->fmt_in );
return VLC_SUCCESS;
}
int OpenDecoder( vlc_object_t *p_this )
{
return OpenDecoderCommon( p_this, false );
}
int OpenDecoderDump( vlc_object_t *p_this )
{
return OpenDecoderCommon( p_this, true );
}
/****************************************************************************
* RunDecoder: the whole thing
****************************************************************************
* This function must be fed with ogg packets.
****************************************************************************/
static void *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
{
decoder_sys_t *p_sys = p_dec->p_sys;
block_t *p_block;
if( !pp_block || !*pp_block ) return NULL;
p_block = *pp_block;
if( p_sys->i_fd >= 0 &&
p_block->i_buffer > 0 &&
(p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) ) == 0 )
{
#ifndef UNDER_CE
write( p_sys->i_fd, p_block->p_buffer, p_block->i_buffer );
#endif
msg_Dbg( p_dec, "dumped %zu bytes", p_block->i_buffer );
}
block_Release( p_block );
return NULL;
}
/*****************************************************************************
* CloseDecoder: decoder destruction
*****************************************************************************/
void CloseDecoder ( vlc_object_t *p_this )
{
decoder_t *p_dec = (decoder_t *)p_this;
decoder_sys_t *p_sys = p_dec->p_sys;
#ifndef UNDER_CE
if( p_sys->i_fd >= 0 )
close( p_sys->i_fd );
#endif
free( p_sys );
}
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