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GSoC
GSoC2018
macOS
vlc
Commits
cd7b7994
Commit
cd7b7994
authored
Aug 24, 2002
by
Sam Hocevar
Browse files
* ./modules/audio_filter/resampler/ugly.c: simple resampler which does not
insert blank samples, but changes pitch.
parent
a60541d1
Changes
4
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configure
View file @
cd7b7994
...
...
@@ -5628,7 +5628,7 @@ PLUGINS="${PLUGINS} codec/a52old/imdct/imdct codec/a52old/downmix/downmix codec/
#PLUGINS="${PLUGINS} 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/float32tos8 audio_filter/converter/float32tou16 audio_filter/converter/float32tou8 audio_filter/converter/a52tospdif audio_filter/converter/fixed32tofloat32 audio_filter/converter/fixed32tos16 audio_filter/converter/s16tofloat32"
PLUGINS
=
"
${
PLUGINS
}
audio_filter/resampler/trivial"
PLUGINS
=
"
${
PLUGINS
}
audio_filter/resampler/trivial
audio_filter/resampler/ugly
"
PLUGINS
=
"
${
PLUGINS
}
audio_filter/channel_mixer/trivial"
PLUGINS
=
"
${
PLUGINS
}
audio_mixer/trivial audio_mixer/spdif"
PLUGINS
=
"
${
PLUGINS
}
audio_output/file"
...
...
configure.in
View file @
cd7b7994
...
...
@@ -448,7 +448,7 @@ PLUGINS="${PLUGINS} codec/a52old/imdct/imdct codec/a52old/downmix/downmix codec/
#PLUGINS="${PLUGINS} codec/lpcm/lpcm"
PLUGINS="${PLUGINS} video_filter/deinterlace/deinterlace video_filter/invert video_filter/wall video_filter/transform video_filter/distort video_filter/clone video_filter/crop"
PLUGINS="${PLUGINS} audio_filter/converter/float32tos16 audio_filter/converter/float32tos8 audio_filter/converter/float32tou16 audio_filter/converter/float32tou8 audio_filter/converter/a52tospdif audio_filter/converter/fixed32tofloat32 audio_filter/converter/fixed32tos16 audio_filter/converter/s16tofloat32"
PLUGINS="${PLUGINS} audio_filter/resampler/trivial"
PLUGINS="${PLUGINS} audio_filter/resampler/trivial
audio_filter/resampler/ugly
"
PLUGINS="${PLUGINS} audio_filter/channel_mixer/trivial"
PLUGINS="${PLUGINS} audio_mixer/trivial audio_mixer/spdif"
PLUGINS="${PLUGINS} audio_output/file"
...
...
modules/audio_filter/resampler/Makefile
View file @
cd7b7994
trivial_SOURCES
=
trivial.c
ugly_SOURCES
=
ugly.c
fast_SOURCES
=
fast.c
modules/audio_filter/resampler/ugly.c
0 → 100644
View file @
cd7b7994
/*****************************************************************************
* ugly.c : ugly resampler (changes pitch)
*****************************************************************************
* Copyright (C) 2002 VideoLAN
* $Id: ugly.c,v 1.1 2002/08/24 20:22:34 sam Exp $
*
* Authors: Samuel Hocevar <sam@zoy.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
(
_
(
"audio filter for ugly resampling"
)
);
set_capability
(
"audio filter"
,
5
);
set_callbacks
(
Create
,
NULL
);
vlc_module_end
();
/*****************************************************************************
* Create: allocate ugly resampler
*****************************************************************************/
static
int
Create
(
vlc_object_t
*
p_this
)
{
aout_filter_t
*
p_filter
=
(
aout_filter_t
*
)
p_this
;
if
(
p_filter
->
input
.
i_rate
==
p_filter
->
output
.
i_rate
||
p_filter
->
input
.
i_format
!=
p_filter
->
output
.
i_format
||
p_filter
->
input
.
i_channels
!=
p_filter
->
output
.
i_channels
||
(
p_filter
->
input
.
i_format
!=
AOUT_FMT_FLOAT32
&&
p_filter
->
input
.
i_format
!=
AOUT_FMT_FIXED32
)
)
{
return
VLC_EGENERIC
;
}
p_filter
->
pf_do_work
=
DoWork
;
p_filter
->
b_in_place
=
VLC_FALSE
;
return
VLC_SUCCESS
;
}
/*****************************************************************************
* 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
)
{
s32
*
p_in
=
(
s32
*
)
p_in_buf
->
p_buffer
;
s32
*
p_out
=
(
s32
*
)
p_out_buf
->
p_buffer
;
int
i_in_nb
=
p_in_buf
->
i_nb_samples
;
int
i_out_nb
=
i_in_nb
*
p_filter
->
output
.
i_rate
/
p_filter
->
input
.
i_rate
;
int
i_frame_bytes
=
p_filter
->
input
.
i_channels
*
sizeof
(
s32
);
int
i_out
,
i_chan
,
i_remainder
=
0
;
for
(
i_out
=
i_out_nb
;
i_out
--
;
)
{
for
(
i_chan
=
p_filter
->
input
.
i_channels
;
i_chan
;
)
{
i_chan
--
;
*
p_out
++
=
p_in
[
i_chan
];
}
i_remainder
+=
p_filter
->
input
.
i_rate
;
while
(
i_remainder
>=
p_filter
->
output
.
i_rate
)
{
p_in
+=
p_filter
->
input
.
i_channels
;
i_remainder
-=
p_filter
->
output
.
i_rate
;
}
}
p_out_buf
->
i_nb_samples
=
i_out_nb
;
p_out_buf
->
i_nb_bytes
=
i_out_nb
*
i_frame_bytes
;
}
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