Commit 32184100 authored by Christophe Massiot's avatar Christophe Massiot

* New float32to* converter modules, courtesy of Xavier Maillard

  <zedek@fxgsproject.org>.
* Fixed a bug in float32tos16, where gcc over-optimized a little and
  caused problems on some platforms (eg. solaris).
parent 8456ba1c
......@@ -293,6 +293,11 @@ E: paulus@linuxcare.com.au
D: AltiVec IDCT and motion
S: Australia
N: Xavier Maillard
E: zedek@fxgsproject.org
D: audio converters
S: France, Reims
N: Wade Majors
E: guru@startrek.com
D: BeOS testing, icon integration, debugging and fixes
......
......@@ -5670,7 +5670,7 @@ PLUGINS="${PLUGINS} demux/mpeg/es demux/mpeg/audio demux/mpeg/mpeg_system demux/
PLUGINS="${PLUGINS} codec/mpeg_video/idct/idct codec/mpeg_video/idct/idctclassic codec/mpeg_video/motion/motion codec/mpeg_video/mpeg_video codec/spudec/spudec codec/spdif"
#PLUGINS="${PLUGINS} codec/a52old/imdct/imdct codec/a52old/downmix/downmix codec/mpeg_audio/mpeg_audio codec/a52old/a52old codec/lpcm/lpcm"
PLUGINS="${PLUGINS} video_filter/deinterlace/deinterlace video_filter/invert video_filter/wall video_filter/transform video_filter/distort video_filter/clone video_filter/crop"
PLUGINS="${PLUGINS} audio_filter/converter/float32tos16 audio_filter/converter/a52tospdif"
PLUGINS="${PLUGINS} audio_filter/converter/float32tos16 audio_filter/converter/float32tos8 audio_filter/converter/float32tou16 audio_filter/converter/float32tou8 audio_filter/converter/a52tospdif"
PLUGINS="${PLUGINS} audio_filter/resampler/trivial"
PLUGINS="${PLUGINS} audio_mixer/trivial audio_mixer/spdif"
PLUGINS="${PLUGINS} audio_output/file"
......@@ -8375,7 +8375,7 @@ fi
if test "x${ESD_CONFIG}" != "xno"
then
#PLUGINS="${PLUGINS} audio_output/esd"
PLUGINS="${PLUGINS} audio_output/esd"
esd_CFLAGS="${esd_CFLAGS} `${ESD_CONFIG} --cflags`"
esd_LDFLAGS="${esd_LDFLAGS} `${ESD_CONFIG} --libs`"
fi
......@@ -8426,7 +8426,7 @@ fi
if test "x${ARTS_CONFIG}" != "xno"
then
#PLUGINS="${PLUGINS} audio_output/arts"
PLUGINS="${PLUGINS} audio_output/arts"
arts_CFLAGS="${arts_CFLAGS} `${ARTS_CONFIG} --cflags`"
arts_LDFLAGS="${arts_LDFLAGS} `${ARTS_CONFIG} --libs `"
fi
......
......@@ -444,7 +444,7 @@ PLUGINS="${PLUGINS} demux/mpeg/es demux/mpeg/audio demux/mpeg/mpeg_system demux/
PLUGINS="${PLUGINS} codec/mpeg_video/idct/idct codec/mpeg_video/idct/idctclassic codec/mpeg_video/motion/motion codec/mpeg_video/mpeg_video codec/spudec/spudec codec/spdif"
#PLUGINS="${PLUGINS} codec/a52old/imdct/imdct codec/a52old/downmix/downmix codec/mpeg_audio/mpeg_audio codec/a52old/a52old codec/lpcm/lpcm"
PLUGINS="${PLUGINS} video_filter/deinterlace/deinterlace video_filter/invert video_filter/wall video_filter/transform video_filter/distort video_filter/clone video_filter/crop"
PLUGINS="${PLUGINS} audio_filter/converter/float32tos16 audio_filter/converter/a52tospdif"
PLUGINS="${PLUGINS} audio_filter/converter/float32tos16 audio_filter/converter/float32tos8 audio_filter/converter/float32tou16 audio_filter/converter/float32tou8 audio_filter/converter/a52tospdif"
PLUGINS="${PLUGINS} audio_filter/resampler/trivial"
PLUGINS="${PLUGINS} audio_mixer/trivial audio_mixer/spdif"
PLUGINS="${PLUGINS} audio_output/file"
......
float32tos16_SOURCES = float32tos16.c
float32tos8_SOURCES = float32tos8.c
float32tou16_SOURCES = float32tou16.c
float32tou8_SOURCES = float32tou8.c
a52tospdif_SOURCES = a52tospdif.c
fixed32tos16_SOURCES = fixed32tos16.c
fixed32tofloat32_SOURCES = fixed32tofloat32.c
\ No newline at end of file
fixed32tofloat32_SOURCES = fixed32tofloat32.c
......@@ -2,7 +2,7 @@
* float32tos16.c : converter from float32 to signed 16 bits integer
*****************************************************************************
* Copyright (C) 2002 VideoLAN
* $Id: float32tos16.c,v 1.5 2002/08/13 16:11:15 sam Exp $
* $Id: float32tos16.c,v 1.6 2002/08/13 22:42:23 massiot Exp $
*
* Authors: Christophe Massiot <massiot@via.ecp.fr>
*
......@@ -96,11 +96,12 @@ static void DoWork( aout_instance_t * p_aout, aout_filter_t * p_filter,
else *p_out = *p_in * 32768.0;
#else
/* This is walken's trick based on IEEE float format. */
s32 * p_value = (s32 *)p_in;
*p_in += 384.0;
if ( *p_value > 0x43c07fff ) *p_out = 32767;
else if ( *p_value < 0x43bf8000 ) *p_out = -32768;
else *p_out = *p_value - 0x43c00000;
float f_in = *p_in + 384.0;
s32 i_in;
i_in = *(s32 *)&f_in;
if ( i_in > 0x43c07fff ) *p_out = 32767;
else if ( i_in < 0x43bf8000 ) *p_out = -32768;
else *p_out = i_in - 0x43c00000;
#endif
p_in++; p_out++;
}
......
/*****************************************************************************
* float32tos8.c : converter from float32 to signed 8 bits integer
*****************************************************************************
* Copyright (C) 2002 VideoLAN
* $Id: float32tos8.c,v 1.1 2002/08/13 22:42:23 massiot Exp $
*
* Authors: Xavier Maillard <zedek@fxgsproject.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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#include <errno.h>
#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( _("aout filter for float32->s8 conversion") );
set_capability( "audio filter", 1 );
set_callbacks( Create, NULL );
vlc_module_end();
/*****************************************************************************
* Create: allocate trivial mixer
*****************************************************************************
* This function allocates and initializes a Crop vout method.
*****************************************************************************/
static int Create( vlc_object_t *p_this )
{
aout_filter_t * p_filter = (aout_filter_t *)p_this;
if ( p_filter->input.i_format != AOUT_FMT_FLOAT32
|| p_filter->output.i_format != AOUT_FMT_S8 )
{
return -1;
}
if ( p_filter->input.i_rate != p_filter->output.i_rate
|| p_filter->input.i_channels != p_filter->output.i_channels )
{
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;
float * p_in = (float *)p_in_buf->p_buffer;
s8 * p_out = (s8 *)p_out_buf->p_buffer;
for ( i = 0; i < p_in_buf->i_nb_samples * p_filter->input.i_channels; i++ )
{
if ( *p_in >= 1.0 ) *p_out = 127;
else if ( *p_in < -1.0 ) *p_out = -128;
else *p_out = (s8)(*p_in * 128);
p_in++; p_out++;
}
p_out_buf->i_nb_samples = p_in_buf->i_nb_samples;
}
/*****************************************************************************
* float32tou16.c : converter from float32 to unsigned 16 bits integer
*****************************************************************************
* Copyright (C) 2002 VideoLAN
* $Id: float32tou16.c,v 1.1 2002/08/13 22:42:23 massiot Exp $
*
* Authors: Xavier Maillard <zedek@fxgsproject.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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#include <errno.h>
#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( _("aout filter for float32->u16 conversion") );
set_capability( "audio filter", 1 );
set_callbacks( Create, NULL );
vlc_module_end();
/*****************************************************************************
* Create: allocate trivial mixer
*****************************************************************************
* This function allocates and initializes a Crop vout method.
*****************************************************************************/
static int Create( vlc_object_t *p_this )
{
aout_filter_t * p_filter = (aout_filter_t *)p_this;
if ( p_filter->input.i_format != AOUT_FMT_FLOAT32
&& p_filter->output.i_format != AOUT_FMT_U16_NE )
{
return -1;
}
if ( p_filter->input.i_rate != p_filter->output.i_rate
|| p_filter->input.i_channels != p_filter->output.i_channels )
{
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;
float * p_in = (float *)p_in_buf->p_buffer;
u16 * p_out = (u16 *)p_out_buf->p_buffer;
for ( i = 0; i < p_in_buf->i_nb_samples * p_filter->input.i_channels; i++ )
{
if ( *p_in >= 1.0 ) *p_out = 65535;
else if ( *p_in < -1.0 ) *p_out = 0;
else *p_out = (u16)(32768 + *p_in * 32768);
p_in++; p_out++;
}
p_out_buf->i_nb_samples = p_in_buf->i_nb_samples;
}
/*****************************************************************************
* float32tou8.c : converter from float32 to unsigned 8 bits integer
*****************************************************************************
* Copyright (C) 2002 VideoLAN
* $Id: float32tou8.c,v 1.1 2002/08/13 22:42:23 massiot Exp $
*
* Authors: Xavier Maillard <zedek@fxgsproject.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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#include <errno.h>
#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( _("aout filter for float32->u8 conversion") );
set_capability( "audio filter", 1 );
set_callbacks( Create, NULL );
vlc_module_end();
/*****************************************************************************
* Create: allocate trivial mixer
*****************************************************************************
* This function allocates and initializes a Crop vout method.
*****************************************************************************/
static int Create( vlc_object_t *p_this )
{
aout_filter_t * p_filter = (aout_filter_t *)p_this;
if ( p_filter->input.i_format != AOUT_FMT_FLOAT32
&& p_filter->output.i_format != AOUT_FMT_U8 )
{
return -1;
}
if ( p_filter->input.i_rate != p_filter->output.i_rate
|| p_filter->input.i_channels != p_filter->output.i_channels )
{
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;
float * p_in = (float *)p_in_buf->p_buffer;
u8 * p_out = (u8 *)p_out_buf->p_buffer;
for ( i = 0; i < p_in_buf->i_nb_samples * p_filter->input.i_channels; i++ )
{
if ( *p_in >= 1.0 ) *p_out = 255;
else if ( *p_in < -1.0 ) *p_out = 0;
else *p_out = (u8)(128 + *p_in * 128);
p_in++; p_out++;
}
p_out_buf->i_nb_samples = p_in_buf->i_nb_samples;
}
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