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vlc/modules/audio_filter/format.c
Rafaël Carré 6ee1e193fd Removes trailing spaces. Removes tabs.
2007-09-10 18:56:52 +00:00

813 lines
26 KiB
C
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/*****************************************************************************
* format.c : PCM format converter
*****************************************************************************
* Copyright (C) 2002-2005 the VideoLAN team
* $Id$
*
* Authors: Christophe Massiot <massiot@via.ecp.fr>
* Gildas Bazin <gbazin@videolan.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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#include <vlc/vlc.h>
#include <vlc_aout.h>
#include <vlc_block.h>
#include "vlc_filter.h"
#ifdef WORDS_BIGENDIAN
# define AOUT_FMT_S24_IE VLC_FOURCC('s','2','4','l')
# define AOUT_FMT_S16_IE VLC_FOURCC('s','1','6','l')
# define AOUT_FMT_U16_IE VLC_FOURCC('u','1','6','l')
#else
# define AOUT_FMT_S24_IE VLC_FOURCC('s','2','4','b')
# define AOUT_FMT_S16_IE VLC_FOURCC('s','1','6','b')
# define AOUT_FMT_U16_IE VLC_FOURCC('u','1','6','b')
#endif
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static int Open ( vlc_object_t * );
static block_t *Float32toS24( filter_t *, block_t * );
static block_t *Float32toS16( filter_t *, block_t * );
static block_t *Float32toU16( filter_t *, block_t * );
static block_t *Float32toS8 ( filter_t *, block_t * );
static block_t *Float32toU8 ( filter_t *, block_t * );
static block_t *S24toFloat32 ( filter_t *, block_t * );
static block_t *S24toS16 ( filter_t *, block_t * );
static block_t *S24toS16Invert( filter_t *, block_t * );
static block_t *S16toFloat32 ( filter_t *, block_t * );
static block_t *S16toS24 ( filter_t *, block_t * );
static block_t *S16toS24Invert( filter_t *, block_t * );
static block_t *S16toS8 ( filter_t *, block_t * );
static block_t *S16toU8 ( filter_t *, block_t * );
static block_t *S16toU16 ( filter_t *, block_t * );
static block_t *U16toFloat32( filter_t *, block_t * );
static block_t *U16toS8 ( filter_t *, block_t * );
static block_t *U16toU8 ( filter_t *, block_t * );
static block_t *U16toS16 ( filter_t *, block_t * );
static block_t *Float32toS24Invert( filter_t *, block_t * );
static block_t *Float32toS16Invert( filter_t *, block_t * );
static block_t *Float32toU16Invert( filter_t *, block_t * );
static block_t *S24InverttoFloat32 ( filter_t *, block_t * );
static block_t *S24InverttoS16 ( filter_t *, block_t * );
static block_t *S24InverttoS16Invert( filter_t *, block_t * );
static block_t *S16InverttoFloat32 ( filter_t *, block_t * );
static block_t *S16InverttoS24 ( filter_t *, block_t * );
static block_t *S16InverttoS24Invert( filter_t *, block_t * );
static block_t *S16InverttoS8 ( filter_t *, block_t * );
static block_t *S16InverttoU8 ( filter_t *, block_t * );
static block_t *S16InverttoU16 ( filter_t *, block_t * );
static block_t *U16InverttoFloat32( filter_t *, block_t * );
static block_t *U16InverttoS8 ( filter_t *, block_t * );
static block_t *U16InverttoU8 ( filter_t *, block_t * );
static block_t *U16InverttoS16 ( filter_t *, block_t * );
static block_t *S8toFloat32 ( filter_t *, block_t * );
static block_t *S8toS16 ( filter_t *, block_t * );
static block_t *S8toU16 ( filter_t *, block_t * );
static block_t *S8toU8 ( filter_t *, block_t * );
static block_t *S8toS16Invert( filter_t *, block_t * );
static block_t *S8toU16Invert( filter_t *, block_t * );
static block_t *U8toFloat32 ( filter_t *, block_t * );
static block_t *U8toFloat32 ( filter_t *, block_t * );
static block_t *U8toS16 ( filter_t *, block_t * );
static block_t *U8toU16 ( filter_t *, block_t * );
static block_t *U8toS8 ( filter_t *, block_t * );
static block_t *U8toS16Invert( filter_t *, block_t * );
static block_t *U8toU16Invert( filter_t *, block_t * );
static block_t *U8toS8( filter_t *, block_t * );
static block_t *S8toU8( filter_t *, block_t * );
static block_t *Swap16( filter_t *, block_t * );
static block_t *Swap24( filter_t *, block_t * );
static struct
{
vlc_fourcc_t i_src;
vlc_fourcc_t i_dst;
block_t *(*pf_convert)( filter_t *, block_t *);
} ConvertTable[] =
{
/* From fl32 */
{ VLC_FOURCC('f','l','3','2'), AOUT_FMT_S24_NE, Float32toS24 },
{ VLC_FOURCC('f','l','3','2'), AOUT_FMT_S16_NE, Float32toS16 },
{ VLC_FOURCC('f','l','3','2'), AOUT_FMT_U16_NE, Float32toU16 },
{ VLC_FOURCC('f','l','3','2'), AOUT_FMT_S24_IE, Float32toS24Invert },
{ VLC_FOURCC('f','l','3','2'), AOUT_FMT_S16_IE, Float32toS16Invert },
{ VLC_FOURCC('f','l','3','2'), AOUT_FMT_U16_IE, Float32toU16Invert },
{ VLC_FOURCC('f','l','3','2'), VLC_FOURCC('s','8',' ',' '), Float32toS8 },
{ VLC_FOURCC('f','l','3','2'), VLC_FOURCC('u','8',' ',' '), Float32toU8 },
/* From s24 invert */
{ AOUT_FMT_S24_NE, VLC_FOURCC('f','l','3','2'), S24toFloat32 },
{ AOUT_FMT_S24_NE, AOUT_FMT_S24_IE, Swap24 },
{ AOUT_FMT_S24_NE, AOUT_FMT_S16_NE, S24toS16 },
{ AOUT_FMT_S24_NE, AOUT_FMT_S16_IE, S24toS16Invert },
/* From s16 */
{ AOUT_FMT_S16_NE, VLC_FOURCC('f','l','3','2'), S16toFloat32 },
{ AOUT_FMT_S16_NE, AOUT_FMT_S24_NE, S16toS24 },
{ AOUT_FMT_S16_NE, AOUT_FMT_S24_IE, S16toS24Invert },
{ AOUT_FMT_S16_NE, AOUT_FMT_S16_IE, Swap16 },
{ AOUT_FMT_S16_NE, AOUT_FMT_U16_IE, S16toU16 },
{ AOUT_FMT_S16_NE, VLC_FOURCC('s','8',' ',' '), S16toS8 },
{ AOUT_FMT_S16_NE, VLC_FOURCC('u','8',' ',' '), S16toU8 },
/* From u16 */
{ AOUT_FMT_U16_NE, VLC_FOURCC('f','l','3','2'), U16toFloat32 },
{ AOUT_FMT_U16_NE, AOUT_FMT_U16_IE, Swap16 },
{ AOUT_FMT_U16_NE, AOUT_FMT_S16_IE, U16toS16 },
{ AOUT_FMT_U16_NE, VLC_FOURCC('s','8',' ',' '), U16toS8 },
{ AOUT_FMT_U16_NE, VLC_FOURCC('u','8',' ',' '), U16toU8 },
/* From s8 */
{ VLC_FOURCC('s','8',' ',' '), VLC_FOURCC('f','l','3','2'), S8toFloat32 },
{ VLC_FOURCC('s','8',' ',' '), AOUT_FMT_S16_NE, S8toS16 },
{ VLC_FOURCC('s','8',' ',' '), AOUT_FMT_S16_IE, S8toS16Invert },
{ VLC_FOURCC('s','8',' ',' '), AOUT_FMT_U16_NE, S8toU16 },
{ VLC_FOURCC('s','8',' ',' '), AOUT_FMT_U16_IE, S8toU16Invert },
{ VLC_FOURCC('s','8',' ',' '), VLC_FOURCC('u','8',' ',' '), S8toU8 },
/* From u8 */
{ VLC_FOURCC('u','8',' ',' '), VLC_FOURCC('f','l','3','2'), U8toFloat32 },
{ VLC_FOURCC('u','8',' ',' '), AOUT_FMT_S16_NE, U8toS16 },
{ VLC_FOURCC('u','8',' ',' '), AOUT_FMT_S16_IE, U8toS16Invert },
{ VLC_FOURCC('u','8',' ',' '), AOUT_FMT_U16_NE, U8toU16 },
{ VLC_FOURCC('u','8',' ',' '), AOUT_FMT_U16_IE, U8toU16Invert },
{ VLC_FOURCC('u','8',' ',' '), VLC_FOURCC('s','8',' ',' '), U8toS8 },
/* From s24 invert */
{ AOUT_FMT_S24_IE, VLC_FOURCC('f','l','3','2'), S24InverttoFloat32 },
{ AOUT_FMT_S24_IE, AOUT_FMT_S24_NE, Swap24 },
{ AOUT_FMT_S24_IE, AOUT_FMT_S16_NE, S24InverttoS16 },
{ AOUT_FMT_S24_IE, AOUT_FMT_S16_IE, S24InverttoS16Invert },
/* From s16 invert */
{ AOUT_FMT_S16_IE, VLC_FOURCC('f','l','3','2'), S16InverttoFloat32 },
{ AOUT_FMT_S16_IE, AOUT_FMT_S24_NE, S16InverttoS24 },
{ AOUT_FMT_S16_IE, AOUT_FMT_S24_IE, S16InverttoS24Invert },
{ AOUT_FMT_S16_IE, AOUT_FMT_S16_NE, Swap16 },
{ AOUT_FMT_S16_IE, AOUT_FMT_U16_NE, S16InverttoU16 },
{ AOUT_FMT_S16_IE, VLC_FOURCC('s','8',' ',' '), S16InverttoS8 },
{ AOUT_FMT_S16_IE, VLC_FOURCC('u','8',' ',' '), S16InverttoU8 },
/* From u16 invert */
{ AOUT_FMT_U16_IE, VLC_FOURCC('f','l','3','2'), U16InverttoFloat32 },
{ AOUT_FMT_U16_IE, AOUT_FMT_U16_NE, Swap16 },
{ AOUT_FMT_U16_IE, AOUT_FMT_S16_NE, U16InverttoS16 },
{ AOUT_FMT_U16_IE, VLC_FOURCC('s','8',' ',' '), U16InverttoS8 },
{ AOUT_FMT_U16_IE, VLC_FOURCC('u','8',' ',' '), U16InverttoU8 },
{ 0, 0, NULL },
};
/*****************************************************************************
* Module descriptor
*****************************************************************************/
vlc_module_begin();
set_description( _("Audio filter for PCM format conversion") );
set_category( CAT_AUDIO );
set_subcategory( SUBCAT_AUDIO_MISC );
set_capability( "audio filter2", 1 );
set_callbacks( Open, NULL );
vlc_module_end();
/*****************************************************************************
* Open:
*****************************************************************************/
static int Open( vlc_object_t *p_this )
{
filter_t *p_filter = (filter_t *)p_this;
int i;
for( i = 0; ConvertTable[i].pf_convert != NULL; i++ )
{
if( ConvertTable[i].i_src == p_filter->fmt_in.i_codec &&
ConvertTable[i].i_dst == p_filter->fmt_out.i_codec )
break;
}
if( ConvertTable[i].pf_convert == NULL )
return VLC_EGENERIC;
p_filter->pf_audio_filter = ConvertTable[i].pf_convert;
p_filter->fmt_out.audio = p_filter->fmt_in.audio;
p_filter->fmt_out.audio.i_format = p_filter->fmt_out.i_codec;
msg_Dbg( p_this, "%4.4s->%4.4s, bits per sample: %i",
(char *)&p_filter->fmt_in.i_codec,
(char *)&p_filter->fmt_out.i_codec,
p_filter->fmt_in.audio.i_bitspersample );
return VLC_SUCCESS;
}
/*****************************************************************************
* Convert a buffer
*****************************************************************************/
static block_t *Float32toS24( filter_t *p_filter, block_t *p_block )
{
int i;
float *p_in = (float *)p_block->p_buffer;
uint8_t *p_out = (uint8_t *)p_in;
int32_t out;
for( i = p_block->i_buffer / 4; i--; )
{
if ( *p_in >= 1.0 ) out = 8388607;
else if ( *p_in < -1.0 ) out = -8388608;
else out = *p_in * 8388608.0;
#ifdef WORDS_BIGENDIAN
*((int16_t *)p_out) = out >> 8;
p_out[2] = out & 0xFF;
#else
*((int16_t *)(p_out+1)) = out >> 8;
p_out[0] = out & 0xFF;
#endif
p_in++; p_out += 3;
}
p_block->i_buffer = p_block->i_buffer * 3 / 4;
return p_block;
}
static block_t *Float32toS16( filter_t *p_filter, block_t *p_block )
{
int i;
float *p_in = (float *)p_block->p_buffer;
int16_t *p_out = (int16_t *)p_in;
for( i = p_block->i_buffer / 4; i--; )
{
#if 0
/* Slow version. */
if ( *p_in >= 1.0 ) *p_out = 32767;
else if ( *p_in < -1.0 ) *p_out = -32768;
else *p_out = *p_in * 32768.0;
#else
/* This is walken's trick based on IEEE float format. */
union { float f; int32_t i; } u;
u.f = *p_in + 384.0;
if ( u.i > 0x43c07fff ) *p_out = 32767;
else if ( u.i < 0x43bf8000 ) *p_out = -32768;
else *p_out = u.i - 0x43c00000;
#endif
p_in++; p_out++;
}
p_block->i_buffer /= 2;
return p_block;
}
static block_t *Float32toU16( filter_t *p_filter, block_t *p_block )
{
int i;
float *p_in = (float *)p_block->p_buffer;
uint16_t *p_out = (uint16_t *)p_in;
for( i = p_block->i_buffer / 4; i--; )
{
if ( *p_in >= 1.0 ) *p_out = 65535;
else if ( *p_in < -1.0 ) *p_out = 0;
else *p_out = (uint16_t)(32768 + *p_in * 32768);
p_in++; p_out++;
}
p_block->i_buffer /= 2;
return p_block;
}
static block_t *S24toFloat32( filter_t *p_filter, block_t *p_block )
{
block_t *p_block_out;
uint8_t *p_in;
float *p_out;
int i;
p_block_out =
p_filter->pf_audio_buffer_new( p_filter, p_block->i_buffer * 4 / 3 );
if( !p_block_out )
{
msg_Warn( p_filter, "can't get output buffer" );
return NULL;
}
p_in = p_block->p_buffer;
p_out = (float *)p_block_out->p_buffer;
for( i = p_block->i_buffer / 3; i--; )
{
/* FIXME: unaligned reads */
#ifdef WORDS_BIGENDIAN
*p_out = ((float)( (((int32_t)*(int16_t *)(p_in)) << 8) + p_in[2]))
#else
*p_out = ((float)( (((int32_t)*(int16_t *)(p_in+1)) << 8) + p_in[0]))
#endif
/ 8388608.0;
p_in += 3; p_out++;
}
p_block_out->i_samples = p_block->i_samples;
p_block_out->i_dts = p_block->i_dts;
p_block_out->i_pts = p_block->i_pts;
p_block_out->i_length = p_block->i_length;
p_block_out->i_rate = p_block->i_rate;
p_block->pf_release( p_block );
return p_block_out;
}
static block_t *S24toS16( filter_t *p_filter, block_t *p_block )
{
int i;
uint8_t *p_in = (uint8_t *)p_block->p_buffer;
uint8_t *p_out = (uint8_t *)p_in;
for( i = p_block->i_buffer / 3; i--; )
{
#ifdef WORDS_BIGENDIAN
*p_out++ = *p_in++;
*p_out++ = *p_in++;
p_in++;
#else
p_in++;
*p_out++ = *p_in++;
*p_out++ = *p_in++;
#endif
}
p_block->i_buffer = p_block->i_buffer * 2 / 3;
return p_block;
}
static block_t *S16toFloat32( filter_t *p_filter, block_t *p_block )
{
block_t *p_block_out;
int16_t *p_in;
float *p_out;
int i;
p_block_out =
p_filter->pf_audio_buffer_new( p_filter, p_block->i_buffer*2 );
if( !p_block_out )
{
msg_Warn( p_filter, "can't get output buffer" );
return NULL;
}
p_in = (int16_t *)p_block->p_buffer;
p_out = (float *)p_block_out->p_buffer;
for( i = p_block->i_buffer / 2; i--; )
{
#if 0
/* Slow version */
*p_out = (float)*p_in / 32768.0;
#else
/* This is walken's trick based on IEEE float format. On my PIII
* this takes 16 seconds to perform one billion conversions, instead
* of 19 seconds for the above division. */
union { float f; int32_t i; } u;
u.i = *p_in + 0x43c00000;
*p_out = u.f - 384.0;
#endif
p_in++; p_out++;
}
p_block_out->i_samples = p_block->i_samples;
p_block_out->i_dts = p_block->i_dts;
p_block_out->i_pts = p_block->i_pts;
p_block_out->i_length = p_block->i_length;
p_block_out->i_rate = p_block->i_rate;
p_block->pf_release( p_block );
return p_block_out;
}
static block_t *U16toFloat32( filter_t *p_filter, block_t *p_block )
{
block_t *p_block_out;
uint16_t *p_in;
float *p_out;
int i;
p_block_out =
p_filter->pf_audio_buffer_new( p_filter, p_block->i_buffer*2 );
if( !p_block_out )
{
msg_Warn( p_filter, "can't get output buffer" );
return NULL;
}
p_in = (uint16_t *)p_block->p_buffer;
p_out = (float *)p_block_out->p_buffer;
for( i = p_block->i_buffer / 2; i--; )
{
*p_out++ = (float)(*p_in++ - 32768) / 32768.0;
}
p_block_out->i_samples = p_block->i_samples;
p_block_out->i_dts = p_block->i_dts;
p_block_out->i_pts = p_block->i_pts;
p_block_out->i_length = p_block->i_length;
p_block_out->i_rate = p_block->i_rate;
p_block->pf_release( p_block );
return p_block_out;
}
static block_t *S16toS24( filter_t *p_filter, block_t *p_block )
{
block_t *p_block_out;
uint8_t *p_in, *p_out;
int i;
p_block_out =
p_filter->pf_audio_buffer_new( p_filter, p_block->i_buffer*3/2 );
if( !p_block_out )
{
msg_Warn( p_filter, "can't get output buffer" );
return NULL;
}
p_in = (uint8_t *)p_block->p_buffer;
p_out = (uint8_t *)p_block_out->p_buffer;
for( i = p_block->i_buffer / 2; i--; )
{
#ifdef WORDS_BIGENDIAN
*p_out++ = *p_in++;
*p_out++ = *p_in++;
*p_out++ = 0;
#else
*p_out++ = 0;
*p_out++ = *p_in++;
*p_out++ = *p_in++;
#endif
}
p_block_out->i_samples = p_block->i_samples;
p_block_out->i_dts = p_block->i_dts;
p_block_out->i_pts = p_block->i_pts;
p_block_out->i_length = p_block->i_length;
p_block_out->i_rate = p_block->i_rate;
p_block->pf_release( p_block );
return p_block_out;
}
static block_t *S16toS8( filter_t *p_filter, block_t *p_block )
{
int i;
int16_t *p_in = (int16_t *)p_block->p_buffer;
int8_t *p_out = (int8_t *)p_in;
for( i = p_block->i_buffer / 2; i--; )
*p_out++ = (*p_in++) >> 8;
p_block->i_buffer /= 2;
return p_block;
}
static block_t *S16toU8( filter_t *p_filter, block_t *p_block )
{
int i;
int16_t *p_in = (int16_t *)p_block->p_buffer;
uint8_t *p_out = (uint8_t *)p_in;
for( i = p_block->i_buffer / 2; i--; )
*p_out++ = ((*p_in++) + 32768) >> 8;
p_block->i_buffer /= 2;
return p_block;
}
static block_t *S16toU16( filter_t *p_filter, block_t *p_block )
{
int i;
int16_t *p_in = (int16_t *)p_block->p_buffer;
uint16_t *p_out = (uint16_t *)p_in;
for( i = p_block->i_buffer / 2; i--; )
*p_out++ = (*p_in++) + 32768;
return p_block;
}
static block_t *U16toS8( filter_t *p_filter, block_t *p_block )
{
int i;
uint16_t *p_in = (uint16_t *)p_block->p_buffer;
int8_t *p_out = (int8_t *)p_in;
for( i = p_block->i_buffer / 2; i--; )
*p_out++ = ((int)(*p_in++) - 32768) >> 8;
p_block->i_buffer /= 2;
return p_block;
}
static block_t *U16toU8( filter_t *p_filter, block_t *p_block )
{
int i;
uint16_t *p_in = (uint16_t *)p_block->p_buffer;
uint8_t *p_out = (uint8_t *)p_in;
for( i = p_block->i_buffer / 2; i--; )
*p_out++ = (*p_in++) >> 8;
p_block->i_buffer /= 2;
return p_block;
}
static block_t *U16toS16( filter_t *p_filter, block_t *p_block )
{
int i;
uint16_t *p_in = (uint16_t *)p_block->p_buffer;
int16_t *p_out = (int16_t *)p_in;
for( i = p_block->i_buffer / 2; i--; )
*p_out++ = (int)(*p_in++) - 32768;
return p_block;
}
static block_t *S8toU8( filter_t *p_filter, block_t *p_block )
{
int i;
int8_t *p_in = (int8_t *)p_block->p_buffer;
uint8_t *p_out = (uint8_t *)p_in;
for( i = p_block->i_buffer; i--; )
*p_out++ = ((*p_in++) + 128);
return p_block;
}
static block_t *U8toS8( filter_t *p_filter, block_t *p_block )
{
int i;
uint8_t *p_in = (uint8_t *)p_block->p_buffer;
int8_t *p_out = (int8_t *)p_in;
for( i = p_block->i_buffer; i--; )
*p_out++ = ((*p_in++) - 128);
return p_block;
}
/* */
static block_t *S8toU16( filter_t *p_filter, block_t *p_block )
{
block_t *p_block_out;
int8_t *p_in;
uint16_t *p_out;
int i;
p_block_out =
p_filter->pf_audio_buffer_new( p_filter, p_block->i_buffer*2 );
if( !p_block_out )
{
msg_Warn( p_filter, "can't get output buffer" );
return NULL;
}
p_in = (int8_t *)p_block->p_buffer;
p_out = (uint16_t *)p_block_out->p_buffer;
for( i = p_block->i_buffer; i--; )
*p_out++ = ((*p_in++) + 128) << 8;
p_block_out->i_samples = p_block->i_samples;
p_block_out->i_dts = p_block->i_dts;
p_block_out->i_pts = p_block->i_pts;
p_block_out->i_length = p_block->i_length;
p_block_out->i_rate = p_block->i_rate;
p_block->pf_release( p_block );
return p_block_out;
}
static block_t *U8toS16( filter_t *p_filter, block_t *p_block )
{
block_t *p_block_out;
uint8_t *p_in;
int16_t *p_out;
int i;
p_block_out =
p_filter->pf_audio_buffer_new( p_filter, p_block->i_buffer*2 );
if( !p_block_out )
{
msg_Warn( p_filter, "can't get output buffer" );
return NULL;
}
p_in = (uint8_t *)p_block->p_buffer;
p_out = (int16_t *)p_block_out->p_buffer;
for( i = p_block->i_buffer; i--; )
*p_out++ = ((*p_in++) - 128) << 8;
p_block_out->i_samples = p_block->i_samples;
p_block_out->i_dts = p_block->i_dts;
p_block_out->i_pts = p_block->i_pts;
p_block_out->i_length = p_block->i_length;
p_block_out->i_rate = p_block->i_rate;
p_block->pf_release( p_block );
return p_block_out;
}
static block_t *S8toS16( filter_t *p_filter, block_t *p_block )
{
block_t *p_block_out;
int8_t *p_in;
int16_t *p_out;
int i;
p_block_out =
p_filter->pf_audio_buffer_new( p_filter, p_block->i_buffer*2 );
if( !p_block_out )
{
msg_Warn( p_filter, "can't get output buffer" );
return NULL;
}
p_in = (int8_t *)p_block->p_buffer;
p_out = (int16_t *)p_block_out->p_buffer;
for( i = p_block->i_buffer; i--; )
*p_out++ = (*p_in++) << 8;
p_block_out->i_samples = p_block->i_samples;
p_block_out->i_dts = p_block->i_dts;
p_block_out->i_pts = p_block->i_pts;
p_block_out->i_length = p_block->i_length;
p_block_out->i_rate = p_block->i_rate;
p_block->pf_release( p_block );
return p_block_out;
}
static block_t *U8toU16( filter_t *p_filter, block_t *p_block )
{
block_t *p_block_out;
uint8_t *p_in;
uint16_t *p_out;
int i;
p_block_out =
p_filter->pf_audio_buffer_new( p_filter, p_block->i_buffer*2 );
if( !p_block_out )
{
msg_Warn( p_filter, "can't get output buffer" );
return NULL;
}
p_in = (uint8_t *)p_block->p_buffer;
p_out = (uint16_t *)p_block_out->p_buffer;
for( i = p_block->i_buffer; i--; )
*p_out++ = (*p_in++) << 8;
p_block_out->i_samples = p_block->i_samples;
p_block_out->i_dts = p_block->i_dts;
p_block_out->i_pts = p_block->i_pts;
p_block_out->i_length = p_block->i_length;
p_block_out->i_rate = p_block->i_rate;
p_block->pf_release( p_block );
return p_block_out;
}
/*****************************************************************************
* Swap a buffer of words
*****************************************************************************/
static block_t *Swap16( filter_t *p_filter, block_t *p_block )
{
int i;
uint8_t *p_in = (uint8_t *)p_block->p_buffer;
uint8_t tmp;
for( i = 0; i < p_block->i_buffer / 2; i++ )
{
tmp = p_in[0];
p_in[0] = p_in[1];
p_in[1] = tmp;
p_in += 2;
}
return p_block;
}
static block_t *Swap24( filter_t *p_filter, block_t *p_block )
{
int i;
uint8_t *p_in = (uint8_t *)p_block->p_buffer;
uint8_t tmp;
for( i = 0; i < p_block->i_buffer / 3; i++ )
{
tmp = p_in[0];
p_in[0] = p_in[2];
p_in[2] = tmp;
p_in += 3;
}
return p_block;
}
#define CONVERT_NN( func, f_in, f_out, b_pre_invert, b_post_invert, swapa, swapb ) \
static block_t *func( filter_t *p_filter, block_t *p_block ) \
{ \
if( b_pre_invert ) \
swapa( p_filter, p_block ); \
\
p_block = f_in##to##f_out( p_filter, p_block ); \
\
if( b_post_invert ) \
swapb( p_filter, p_block ); \
\
return p_block; \
}
CONVERT_NN( Float32toS24Invert, Float32, S24, 0, 1, Swap24, Swap24 )
CONVERT_NN( Float32toS16Invert, Float32, S16, 0, 1, Swap16, Swap16 )
CONVERT_NN( Float32toU16Invert, Float32, U16, 0, 1, Swap16, Swap16 )
CONVERT_NN( S24InverttoFloat32, S24, Float32, 1, 0, Swap24, Swap24 )
CONVERT_NN( S24InverttoS16, S24, S16, 1, 0, Swap24, Swap16 )
CONVERT_NN( S24InverttoS16Invert, S24, S16, 1, 1, Swap24, Swap16 )
CONVERT_NN( S24toS16Invert, S24, S16, 0, 1, Swap24, Swap16 )
CONVERT_NN( S16InverttoFloat32, S16, Float32, 1, 0, Swap16, Swap16 )
CONVERT_NN( S16InverttoS24, S16, S24, 1, 0, Swap16, Swap24 )
CONVERT_NN( S16toS24Invert, S16, S24, 0, 1, Swap16, Swap24 )
CONVERT_NN( S16InverttoS24Invert, S16, S24, 1, 1, Swap16, Swap24 )
CONVERT_NN( S16InverttoS8, S16, S8, 1, 0, Swap16, Swap16 )
CONVERT_NN( S16InverttoU8, S16, U8, 1, 0, Swap16, Swap16 )
CONVERT_NN( S16InverttoU16, S16, U16, 1, 0, Swap16, Swap16 )
CONVERT_NN( U16InverttoFloat32, U16, Float32, 1, 0, Swap16, Swap16 )
CONVERT_NN( U16InverttoS8, U16, S8, 1, 0, Swap16, Swap16 )
CONVERT_NN( U16InverttoU8, U16, U8, 1, 0, Swap16, Swap16 )
CONVERT_NN( U16InverttoS16, U16, S16, 1, 0, Swap16, Swap16 )
#undef CONVERT_NN
#define CONVERT_INDIRECT( func, f_in, f_mid, f_out ) \
static block_t *func( filter_t *p_filter, block_t *p_block ) \
{ \
return f_mid##to##f_out( p_filter, \
f_in##to##f_mid( p_filter, p_block ) ); \
}
CONVERT_INDIRECT( Float32toS8, Float32, S16, U8 )
CONVERT_INDIRECT( Float32toU8, Float32, U16, U8 )
CONVERT_INDIRECT( S8toFloat32, S8, S16, Float32 )
CONVERT_INDIRECT( U8toFloat32, U8, U16, Float32 )
#define S16toS16Invert Swap16
#define U16toU16Invert Swap16
CONVERT_INDIRECT( U8toS16Invert, U8, S16, S16Invert )
CONVERT_INDIRECT( S8toU16Invert, S8, U16, U16Invert )
CONVERT_INDIRECT( U8toU16Invert, U8, U16, U16Invert )
CONVERT_INDIRECT( S8toS16Invert, S8, S16, S16Invert )
#undef CONVERT_INDIRECT
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