Commit 577bceea authored by Christophe Massiot's avatar Christophe Massiot

* modules/codec/fake.c: New fake codec. Use it in conjunction with the

   fake access to create an efficient background image for the transcode
   module (avoids using the switcher module).
parent f0317c3f
...@@ -986,7 +986,7 @@ VLC_ADD_PLUGINS([packetizer_mpeg4video packetizer_mpeg4audio]) ...@@ -986,7 +986,7 @@ VLC_ADD_PLUGINS([packetizer_mpeg4video packetizer_mpeg4audio])
if test "${SYS}" != "mingwce"; then if test "${SYS}" != "mingwce"; then
dnl VLC_ADD_PLUGINS([externrun]) dnl VLC_ADD_PLUGINS([externrun])
VLC_ADD_PLUGINS([access_fake access_filter_timeshift access_filter_record]) VLC_ADD_PLUGINS([access_fake access_filter_timeshift access_filter_record])
VLC_ADD_PLUGINS([gestures rc telnet hotkeys netsync showintf time marq sap shout]) VLC_ADD_PLUGINS([gestures rc telnet hotkeys netsync showintf time marq sap shout fake])
VLC_ADD_PLUGINS([mosaic wall motiondetect clone crop]) VLC_ADD_PLUGINS([mosaic wall motiondetect clone crop])
VLC_ADD_PLUGINS([i420_yuy2 i422_yuy2 i420_ymga]) VLC_ADD_PLUGINS([i420_yuy2 i422_yuy2 i420_ymga])
VLC_ADD_PLUGINS([aout_file linear_resampler bandlimited_resampler]) VLC_ADD_PLUGINS([aout_file linear_resampler bandlimited_resampler])
......
...@@ -25,3 +25,4 @@ SOURCES_dirac = dirac.c ...@@ -25,3 +25,4 @@ SOURCES_dirac = dirac.c
SOURCES_png = png.c SOURCES_png = png.c
SOURCES_svcdsub = svcdsub.c SOURCES_svcdsub = svcdsub.c
SOURCES_cvdsub = cvdsub.c SOURCES_cvdsub = cvdsub.c
SOURCES_fake = fake.c
/*****************************************************************************
* fake.c: decoder reading from a fake stream, outputting a fixed image
*****************************************************************************
* Copyright (C) 2005 VideoLAN
* $Id$
*
* Authors: Christophe Massiot <massiot@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 <vlc/vlc.h>
#include <vlc/decoder.h>
#include "vlc_image.h"
/*****************************************************************************
* decoder_sys_t : fake decoder descriptor
*****************************************************************************/
struct decoder_sys_t
{
picture_t *p_image;
};
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static int OpenDecoder ( vlc_object_t * );
static void CloseDecoder ( vlc_object_t * );
static picture_t *DecodeBlock ( decoder_t *, block_t ** );
/*****************************************************************************
* Module descriptor
*****************************************************************************/
#define FILE_TEXT N_("Image file")
#define FILE_LONGTEXT N_( \
"Path of the image file when using the fake input." )
#define ASPECT_RATIO_TEXT N_("Background aspect ratio")
#define ASPECT_RATIO_LONGTEXT N_( \
"Aspect ratio of the image file (4:3, 16:9)." )
vlc_module_begin();
set_category( CAT_INPUT );
set_subcategory( SUBCAT_INPUT_VCODEC );
set_description( _("fake video decoder") );
set_capability( "decoder", 1000 );
set_callbacks( OpenDecoder, CloseDecoder );
add_shortcut( "fake" );
add_string( "fake-file", "", NULL, FILE_TEXT,
FILE_LONGTEXT, VLC_TRUE );
add_string( "fake-aspect-ratio", "4:3", NULL,
ASPECT_RATIO_TEXT, ASPECT_RATIO_LONGTEXT, VLC_FALSE );
vlc_module_end();
/*****************************************************************************
* OpenDecoder: probe the decoder and return score
*****************************************************************************/
static int OpenDecoder( vlc_object_t *p_this )
{
decoder_t *p_dec = (decoder_t*)p_this;
decoder_sys_t *p_sys;
vlc_value_t val;
if( p_dec->fmt_in.i_codec != VLC_FOURCC('f','a','k','e') )
{
return VLC_EGENERIC;
}
/* 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 )
{
msg_Err( p_dec, "out of memory" );
return VLC_EGENERIC;
}
var_Create( p_dec, "fake-file", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
var_Get( p_dec, "fake-file", &val );
if( val.psz_string != NULL && *val.psz_string )
{
image_handler_t *p_handler = image_HandlerCreate( p_dec );
video_format_t fmt_in, fmt_out;
memset( &fmt_in, 0, sizeof(fmt_in) );
memset( &fmt_out, 0, sizeof(fmt_out) );
fmt_out.i_chroma = VLC_FOURCC('Y', 'V', '1', '2');
p_sys->p_image = image_ReadUrl( p_handler, val.psz_string,
&fmt_in, &fmt_out );
image_HandlerDelete( p_handler );
if( p_sys->p_image == NULL )
{
msg_Err( p_dec, "unable to read image file %s", val.psz_string );
free( p_dec->p_sys );
return VLC_EGENERIC;
}
msg_Dbg( p_dec, "file %s loaded successfully", val.psz_string );
p_dec->fmt_out.video = fmt_out;
}
if( val.psz_string ) free( val.psz_string );
var_Create( p_dec, "fake-aspect-ratio",
VLC_VAR_STRING | VLC_VAR_DOINHERIT );
var_Get( p_dec, "fake-aspect-ratio", &val );
if ( val.psz_string )
{
char *psz_parser = strchr( val.psz_string, ':' );
if( psz_parser )
{
*psz_parser++ = '\0';
p_dec->fmt_out.video.i_aspect = atoi( val.psz_string )
* VOUT_ASPECT_FACTOR / atoi( psz_parser );
}
else
{
msg_Warn( p_dec, "bad aspect ratio %s", val.psz_string );
p_dec->fmt_out.video.i_aspect = 4 * VOUT_ASPECT_FACTOR / 3;
}
free( val.psz_string );
}
else
{
p_dec->fmt_out.video.i_aspect = 4 * VOUT_ASPECT_FACTOR / 3;
}
/* Set output properties */
p_dec->fmt_out.i_cat = VIDEO_ES;
p_dec->fmt_out.i_codec = VLC_FOURCC('Y','V','1','2');
/* Set callbacks */
p_dec->pf_decode_video = DecodeBlock;
return VLC_SUCCESS;
}
/****************************************************************************
* DecodeBlock: the whole thing
****************************************************************************/
static picture_t *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
{
decoder_sys_t *p_sys = p_dec->p_sys;
picture_t *p_pic;
if( pp_block == NULL || !*pp_block ) return NULL;
p_pic = p_dec->pf_vout_buffer_new( p_dec );
if( p_pic == NULL )
{
msg_Err( p_dec, "cannot get picture" );
goto error;
}
vout_CopyPicture( p_dec, p_pic, p_sys->p_image );
p_pic->date = (*pp_block)->i_pts;
error:
block_Release( *pp_block );
*pp_block = NULL;
return p_pic;
}
/*****************************************************************************
* CloseDecoder: fake decoder destruction
*****************************************************************************/
static void CloseDecoder( vlc_object_t *p_this )
{
decoder_t *p_dec = (decoder_t *)p_this;
decoder_sys_t *p_sys = p_dec->p_sys;
if( p_sys->p_image != NULL )
p_sys->p_image->pf_release( p_sys->p_image );
free( p_sys );
}
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