Commit 7980185d authored by Marc Ariberti's avatar Marc Ariberti

* all: added s16tofixed32 filter, so that we decode flac with iPaq !

parent 86d1e8f7
......@@ -804,7 +804,7 @@ PLUGINS="${PLUGINS} dummy rc logger gestures access_file memcpy"
PLUGINS="${PLUGINS} es audio m4v mpeg_system ps ts avi asf aac mp4 rawdv"
PLUGINS="${PLUGINS} spudec mpeg_audio lpcm a52 dts cinepak"
PLUGINS="${PLUGINS} deinterlace invert adjust wall transform distort clone crop motionblur"
PLUGINS="${PLUGINS} float32tos16 float32tos8 float32tou16 float32tou8 a52tospdif dtstospdif fixed32tofloat32 fixed32tos16 s16tofloat32 s16tofloat32swab s8tofloat32 u8tofixed32 u8tofloat32"
PLUGINS="${PLUGINS} float32tos16 float32tos8 float32tou16 float32tou8 a52tospdif dtstospdif fixed32tofloat32 fixed32tos16 s16tofixed32 s16tofloat32 s16tofloat32swab s8tofloat32 u8tofixed32 u8tofloat32"
PLUGINS="${PLUGINS} trivial_resampler ugly_resampler linear_resampler bandlimited_resampler"
PLUGINS="${PLUGINS} trivial_channel_mixer headphone_channel_mixer"
PLUGINS="${PLUGINS} trivial_mixer spdif_mixer float32_mixer"
......
......@@ -6,6 +6,7 @@ SOURCES_a52tospdif = modules/audio_filter/converter/a52tospdif.c
SOURCES_a52tofloat32 = modules/audio_filter/converter/a52tofloat32.c
SOURCES_dtstospdif = modules/audio_filter/converter/dtstospdif.c
SOURCES_fixed32tos16 = modules/audio_filter/converter/fixed32tos16.c
SOURCES_s16tofixed32 = modules/audio_filter/converter/s16tofixed32.c
SOURCES_fixed32tofloat32 = modules/audio_filter/converter/fixed32tofloat32.c
SOURCES_s16tofloat32 = modules/audio_filter/converter/s16tofloat32.c
SOURCES_s16tofloat32swab = modules/audio_filter/converter/s16tofloat32swab.c
......
/*****************************************************************************
* s16tofixed32.c : converter from signed 16 bits integer to fixed 32
*****************************************************************************
* Copyright (C) 2002 VideoLAN
* $Id: s16tofixed32.c,v 1.1 2003/03/12 23:59:19 marcari Exp $
*
* Authors: Marc Ariberti <marcari@videolan.ord>
*
* 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 <stdlib.h> /* malloc(), free() */
#include <string.h>
#include <vlc/vlc.h>
#include "audio_output.h"
#include "aout_internal.h"
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static int Create ( vlc_object_t * );
static void DoWork ( aout_instance_t *, aout_filter_t *, aout_buffer_t *,
aout_buffer_t * );
/*****************************************************************************
* Module descriptor
*****************************************************************************/
vlc_module_begin();
set_description( _("audio filter for s16->fixed32 conversion") );
set_capability( "audio filter", 15 );
set_callbacks( Create, NULL );
vlc_module_end();
/*****************************************************************************
* Create: allocate filter
*****************************************************************************
* This function allocates and initializes a s16->fixed32 audio filter.
*****************************************************************************/
static int Create( vlc_object_t *p_this )
{
aout_filter_t * p_filter = (aout_filter_t *)p_this;
if ( p_filter->output.i_format != VLC_FOURCC('f','i','3','2')
|| p_filter->input.i_format != AOUT_FMT_S16_NE )
{
return -1;
}
if ( !AOUT_FMTS_SIMILAR( &p_filter->input, &p_filter->output ) )
{
return -1;
}
p_filter->pf_do_work = DoWork;
p_filter->b_in_place = 1;
return 0;
}
/*****************************************************************************
* DoWork: convert a buffer
*****************************************************************************/
static void DoWork( aout_instance_t * p_aout, aout_filter_t * p_filter,
aout_buffer_t * p_in_buf, aout_buffer_t * p_out_buf )
{
int i = p_in_buf->i_nb_samples * aout_FormatNbChannels( &p_filter->input );
/* We start from the end because b_in_place is true */
s16 * p_in = (s16 *)p_in_buf->p_buffer + i - 1;
vlc_fixed_t * p_out = (vlc_fixed_t *)p_out_buf->p_buffer + i - 1;
while( i-- )
{
*p_out = (vlc_fixed_t)( (int32_t)(*p_in) * (FIXED32_ONE >> 16) );
p_in--; p_out--;
}
p_out_buf->i_nb_samples = p_in_buf->i_nb_samples;
p_out_buf->i_nb_bytes = p_in_buf->i_nb_bytes
* sizeof(vlc_fixed_t) / sizeof(s16);
}
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