+++ /dev/null
-/*****************************************************************************
- * fake.c: decoder reading from a fake stream, outputting a fixed image
- *****************************************************************************
- * Copyright (C) 2005-2009 the VideoLAN team
- * $Id$
- *
- * Authors: Christophe Massiot <massiot@via.ecp.fr>
- * Jean-Paul Saman <jpsaman at m2x dot nl>
- *
- * 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_codec.h>
-
-#include <vlc_image.h>
-#include <vlc_filter.h>
-
-/*****************************************************************************
- * Local prototypes
- *****************************************************************************/
-static int OpenDecoder ( vlc_object_t * );
-static void CloseDecoder ( vlc_object_t * );
-
-static picture_t *DecodeBlock ( decoder_t *, block_t ** );
-static int FakeCallback( vlc_object_t *, char const *,
- vlc_value_t, vlc_value_t, void * );
-
-/*****************************************************************************
- * Module descriptor
- *****************************************************************************/
-#define FILE_TEXT N_("Image file")
-#define FILE_LONGTEXT N_( \
- "Path of the image file for fake input." )
-#define RELOAD_TEXT N_("Reload image file")
-#define RELOAD_LONGTEXT N_( \
- "Reload image file every n seconds." )
-#define WIDTH_TEXT N_("Video width")
-#define WIDTH_LONGTEXT N_( \
- "Output video width." )
-#define HEIGHT_TEXT N_("Video height")
-#define HEIGHT_LONGTEXT N_( \
- "Output video height." )
-#define KEEP_AR_TEXT N_("Keep aspect ratio")
-#define KEEP_AR_LONGTEXT N_( \
- "Consider width and height as maximum values." )
-#define ASPECT_RATIO_TEXT N_("Background aspect ratio")
-#define ASPECT_RATIO_LONGTEXT N_( \
- "Aspect ratio of the image file (4:3, 16:9). Default is square pixels." )
-#define DEINTERLACE_TEXT N_("Deinterlace video")
-#define DEINTERLACE_LONGTEXT N_( \
- "Deinterlace the image after loading it." )
-#define DEINTERLACE_MODULE_TEXT N_("Deinterlace module")
-#define DEINTERLACE_MODULE_LONGTEXT N_( \
- "Deinterlace module to use." )
-#define CHROMA_TEXT N_("Chroma used")
-#define CHROMA_LONGTEXT N_( \
- "Force use of a specific chroma for output. Default is I420." )
-
-static const char *const ppsz_deinterlace_type[] =
-{
- "deinterlace", "ffmpeg-deinterlace"
-};
-
-vlc_module_begin ()
- set_category( CAT_INPUT )
- set_subcategory( SUBCAT_INPUT_VCODEC )
- set_shortname( N_("Fake") )
- set_description( N_("Fake video decoder") )
- set_capability( "decoder", 1000 )
- set_callbacks( OpenDecoder, CloseDecoder )
- add_shortcut( "fake" )
-
- add_file( "fake-file", "", NULL, FILE_TEXT,
- FILE_LONGTEXT, false )
- add_integer( "fake-file-reload", 0, NULL, RELOAD_TEXT,
- RELOAD_LONGTEXT, false )
- add_integer( "fake-width", 0, NULL, WIDTH_TEXT,
- WIDTH_LONGTEXT, true )
- add_integer( "fake-height", 0, NULL, HEIGHT_TEXT,
- HEIGHT_LONGTEXT, true )
- add_bool( "fake-keep-ar", false, NULL, KEEP_AR_TEXT, KEEP_AR_LONGTEXT,
- true )
- add_string( "fake-aspect-ratio", "", NULL,
- ASPECT_RATIO_TEXT, ASPECT_RATIO_LONGTEXT, true )
- add_bool( "fake-deinterlace", false, NULL, DEINTERLACE_TEXT,
- DEINTERLACE_LONGTEXT, false )
- add_string( "fake-deinterlace-module", "deinterlace", NULL,
- DEINTERLACE_MODULE_TEXT, DEINTERLACE_MODULE_LONGTEXT,
- false )
- change_string_list( ppsz_deinterlace_type, 0, 0 )
- add_string( "fake-chroma", "I420", NULL, CHROMA_TEXT, CHROMA_LONGTEXT,
- true )
-vlc_module_end ()
-
-struct decoder_sys_t
-{
- picture_t *p_image;
- vlc_mutex_t lock;
-
- bool b_reload;
- mtime_t i_reload;
- mtime_t i_next;
-};
-
-/*****************************************************************************
- * OpenDecoder: probe the decoder and return score
- *****************************************************************************/
-static int OpenDecoder( vlc_object_t *p_this )
-{
- decoder_t *p_dec = (decoder_t*)p_this;
- image_handler_t *p_handler;
- video_format_t fmt_in, fmt_out;
- picture_t *p_image;
- char *psz_file, *psz_chroma, *psz_string;
- bool b_keep_ar;
- int i_aspect = 0;
- int i_int;
-
- if( p_dec->fmt_in.i_codec != VLC_FOURCC('f','a','k','e') )
- {
- return VLC_EGENERIC;
- }
-
- p_dec->p_sys = calloc( 1, sizeof( *p_dec->p_sys ) );
- if( !p_dec->p_sys )
- return VLC_ENOMEM;
-
- psz_file = var_CreateGetNonEmptyStringCommand( p_dec, "fake-file" );
- if( !psz_file )
- {
- msg_Err( p_dec, "specify a file with --fake-file=..." );
- free( p_dec->p_sys );
- return VLC_EGENERIC;
- }
-
- memset( &fmt_in, 0, sizeof(fmt_in) );
- memset( &fmt_out, 0, sizeof(fmt_out) );
-
- i_int = var_CreateGetIntegerCommand( p_dec, "fake-file-reload" );
- if( i_int > 0)
- {
- p_dec->p_sys->b_reload = true;
- p_dec->p_sys->i_reload = (mtime_t)(i_int * 1000000);
- p_dec->p_sys->i_next = (mtime_t)(p_dec->p_sys->i_reload + mdate());
- }
-
- psz_chroma = var_CreateGetString( p_dec, "fake-chroma" );
- fmt_out.i_chroma = vlc_fourcc_GetCodecFromString( VIDEO_ES, psz_chroma );
- if( !fmt_out.i_chroma )
- {
- msg_Warn( p_dec, "Invalid chroma (%s). Using I420.", psz_chroma );
- fmt_out.i_chroma = VLC_CODEC_I420;
- }
- free( psz_chroma );
-
- var_Create( p_dec, "fake-width", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
- var_Create( p_dec, "fake-height", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
- psz_string = var_CreateGetString( p_dec, "fake-aspect-ratio" );
-
- if( psz_string )
- {
- char *psz_parser = strchr( psz_string, ':' );
-
- if( psz_parser )
- {
- *psz_parser++ = '\0';
- i_aspect = atoi( psz_string )
- * VOUT_ASPECT_FACTOR / atoi( psz_parser );
- }
- free( psz_string );
- }
-
- b_keep_ar = var_CreateGetBool( p_dec, "fake-keep-ar" );
-
- if( !b_keep_ar )
- {
- fmt_out.i_width = var_GetInteger( p_dec, "fake-width" );
- fmt_out.i_height = var_GetInteger( p_dec, "fake-height" );
- }
-
- p_handler = image_HandlerCreate( p_dec );
- p_image = image_ReadUrl( p_handler, psz_file, &fmt_in, &fmt_out );
- image_HandlerDelete( p_handler );
-
- if ( p_image == NULL )
- {
- msg_Err( p_dec, "unable to read image file %s", psz_file );
- free( psz_file );
- free( p_dec->p_sys );
- return VLC_EGENERIC;
- }
- msg_Dbg( p_dec, "file %s loaded successfully", psz_file );
-
- free( psz_file );
-
- if ( b_keep_ar )
- {
- picture_t *p_old = p_image;
- int i_width, i_height;
-
- i_width = var_GetInteger( p_dec, "fake-width" );
- i_height = var_GetInteger( p_dec, "fake-height" );
-
- if ( i_width && i_height )
- {
- int i_image_ar = fmt_out.i_width * VOUT_ASPECT_FACTOR
- / fmt_out.i_height;
- int i_region_ar = i_width * VOUT_ASPECT_FACTOR / i_height;
- fmt_in = fmt_out;
-
- if ( i_aspect == i_image_ar )
- {
- fmt_out.i_width = i_width;
- fmt_out.i_height = i_height;
- }
- else if ( i_image_ar > i_region_ar )
- {
- fmt_out.i_width = i_width;
- fmt_out.i_height = i_width * VOUT_ASPECT_FACTOR
- / i_image_ar;
- i_aspect = i_image_ar;
- }
- else
- {
- fmt_out.i_height = i_height;
- fmt_out.i_width = i_height * i_image_ar
- / VOUT_ASPECT_FACTOR;
- i_aspect = i_image_ar;
- }
-
- p_handler = image_HandlerCreate( p_dec );
- p_image = image_Convert( p_handler, p_old, &fmt_in, &fmt_out );
- image_HandlerDelete( p_handler );
-
- if ( p_image == NULL )
- {
- msg_Warn( p_dec, "couldn't load resizing module" );
- p_image = p_old;
- fmt_out = fmt_in;
- }
- else
- {
- picture_Release( p_old );
- }
- }
- }
-
- if ( i_aspect )
- {
- fmt_out.i_sar_num = i_aspect * fmt_out.i_height;
- fmt_out.i_sar_den = VOUT_ASPECT_FACTOR * fmt_out.i_width;
- }
- else
- {
- fmt_out.i_sar_num = 1;
- fmt_out.i_sar_den = 1;
- }
-
- if( var_CreateGetBool( p_dec, "fake-deinterlace" ) )
- {
- picture_t *p_old = p_image;
-
- psz_string = var_CreateGetString( p_dec, "fake-deinterlace-module" );
-
- p_handler = image_HandlerCreate( p_dec );
- p_image = image_Filter( p_handler, p_old, &fmt_out, psz_string );
- image_HandlerDelete( p_handler );
- free( psz_string );
-
- if ( p_image == NULL )
- {
- msg_Warn( p_dec, "couldn't load deinterlace module" );
- p_image = p_old;
- }
- else
- {
- picture_Release( p_old );
- }
- }
-
- /* Set output properties */
- p_dec->fmt_out.i_cat = VIDEO_ES;
- p_dec->fmt_out.i_codec = fmt_out.i_chroma;
- p_dec->fmt_out.video = fmt_out;
-
- /* Set callbacks */
- p_dec->pf_decode_video = DecodeBlock;
-
- p_dec->p_sys->p_image = p_image;
- vlc_mutex_init( &p_dec->p_sys->lock );
-
- /* Add the callback when every variables are available */
- var_AddCallback( p_dec, "fake-file", FakeCallback, p_dec );
- var_AddCallback( p_dec, "fake-file-reload", FakeCallback , p_dec );
-
- return VLC_SUCCESS;
-}
-
-/****************************************************************************
- * DecodeBlock: the whole thing
- ****************************************************************************/
-static picture_t *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
-{
- decoder_sys_t *p_sys = (decoder_sys_t*) p_dec->p_sys;
- picture_t *p_pic;
-
- if( pp_block == NULL || !*pp_block ) return NULL;
- p_pic = decoder_NewPicture( p_dec );
- if( p_pic == NULL )
- {
- msg_Err( p_dec, "cannot get picture" );
- goto error;
- }
-
- if( p_sys->b_reload && (mdate() >= p_sys->i_next) )
- {
- var_TriggerCallback( p_dec, "fake-file" );
- /* next period */
- p_sys->i_next = (mtime_t)(p_sys->i_reload + mdate());
- }
- vlc_mutex_lock( &p_dec->p_sys->lock );
- picture_Copy( p_pic, p_dec->p_sys->p_image );
- vlc_mutex_unlock( &p_dec->p_sys->lock );
-
- 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;
- picture_t *p_image = p_dec->p_sys->p_image;
-
- var_DelCallback( p_dec, "fake-file", FakeCallback, p_dec );
- var_DelCallback( p_dec, "fake-file-reload", FakeCallback , p_dec );
-
- if( p_image != NULL )
- picture_Release( p_image );
-
- vlc_mutex_destroy( &p_dec->p_sys->lock );
- free( p_dec->p_sys );
-}
-
-/*****************************************************************************
- * FakeCallback: Image source change callback.
- *****************************************************************************/
-static int FakeCallback( vlc_object_t *p_this, char const *psz_var,
- vlc_value_t oldval, vlc_value_t newval,
- void *p_data )
-{
- VLC_UNUSED(p_this); VLC_UNUSED(oldval);
- decoder_t *p_dec = (decoder_t *)p_data;
-
- if( !strcmp( psz_var, "fake-file" ) )
- {
- image_handler_t *p_handler;
- picture_t *p_new_image;
- video_format_t fmt_in, fmt_out;
- char *psz_file = newval.psz_string;
- picture_t *p_image;
-
- vlc_mutex_lock( &p_dec->p_sys->lock );
- p_image = p_dec->p_sys->p_image;
-
- if( !psz_file || !*psz_file )
- {
- msg_Err( p_dec, "fake-file value must be non empty." );
- vlc_mutex_unlock( &p_dec->p_sys->lock );
- return VLC_EGENERIC;
- }
- msg_Dbg( p_dec, "Changing fake-file to %s.", psz_file );
-
- memset( &fmt_in, 0, sizeof(fmt_in) );
- fmt_out = p_dec->fmt_out.video;
- p_handler = image_HandlerCreate( p_dec );
- p_new_image = image_ReadUrl( p_handler, psz_file, &fmt_in, &fmt_out );
- image_HandlerDelete( p_handler );
-
- if( !p_new_image )
- {
- msg_Err( p_dec, "error while reading image (%s)", psz_file );
- vlc_mutex_unlock( &p_dec->p_sys->lock );
- return VLC_EGENERIC;
- }
-
- p_dec->p_sys->p_image = p_new_image;
- picture_Release( p_image );
- vlc_mutex_unlock( &p_dec->p_sys->lock );
- }
- else if( !strcmp( psz_var, "fake-file-reload" ) )
- {
- if( newval.i_int > 0)
- {
- p_dec->p_sys->b_reload = true;
- p_dec->p_sys->i_reload = (mtime_t)(newval.i_int * 1000000);
- p_dec->p_sys->i_next = (mtime_t)(p_dec->p_sys->i_reload + mdate());
- }
- else
- {
- p_dec->p_sys->b_reload = false;
- }
- }
-
- return VLC_SUCCESS;
-}
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