+++ /dev/null
-/*****************************************************************************
- * float.c: Floating point audio format conversions
- *****************************************************************************
- * Copyright (C) 2002, 2006-2009 the VideoLAN team
- * $Id$
- *
- * Authors: Jean-Paul Saman <jpsaman _at_ videolan _dot_ org>
- * Christophe Massiot <massiot@via.ecp.fr>
- * Samuel Hocevar <sam@zoy.org>
- * Xavier Maillard <zedek@fxgsproject.org>
- * Henri Fallon <henri@videolan.org>
- * Gildas Bazin <gbazin@netcourrier.com>
- *
- * 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_aout.h>
-#include <vlc_filter.h>
-
-/*****************************************************************************
- * Local prototypes
- *****************************************************************************/
-static int Create_F32ToFL32 ( vlc_object_t * );
-static block_t *Do_F32ToFL32( filter_t *, block_t * );
-
-/*****************************************************************************
- * Module descriptor
- *****************************************************************************/
-vlc_module_begin ()
- set_description( N_("Floating-point audio format conversions") )
- set_capability( "audio filter", 10 )
- set_callbacks( Create_F32ToFL32, NULL )
-vlc_module_end ()
-
-/*****************************************************************************
- * Fixed 32 to Float 32 and backwards
- *****************************************************************************/
-static int Create_F32ToFL32( vlc_object_t *p_this )
-{
- filter_t * p_filter = (filter_t *)p_this;
-
- if( p_filter->fmt_out.audio.i_format != VLC_CODEC_FL32
- || !AOUT_FMTS_SIMILAR( &p_filter->fmt_in.audio,
- &p_filter->fmt_out.audio ) )
- return VLC_EGENERIC;
-
- switch( p_filter->fmt_in.audio.i_format )
- {
- case VLC_CODEC_FI32:
- p_filter->pf_audio_filter = Do_F32ToFL32;
- break;
-
- default:
- return VLC_EGENERIC;
- }
-
- return VLC_SUCCESS;
-}
-
-static block_t *Do_F32ToFL32( filter_t * p_filter, block_t * p_in_buf )
-{
- int i;
- vlc_fixed_t * p_in = (vlc_fixed_t *)p_in_buf->p_buffer;
- float * p_out = (float *)p_in_buf->p_buffer;
-
- for ( i = p_in_buf->i_nb_samples
- * aout_FormatNbChannels( &p_filter->fmt_in.audio ) ; i-- ; )
- {
- *p_out++ = (float)*p_in++ / (float)FIXED32_ONE;
- }
- return p_in_buf;
-}
-
-