Commit 64d9b695 authored by Rémi Denis-Courmont's avatar Rémi Denis-Courmont

Creative Voice File demux

parent 28c10c83
......@@ -338,5 +338,6 @@ N: R
E: rem@videolan.org
C: courmisch
D: SSL/TLS support (core, HTTP server, HTTP input)
D: VOC files demultiplexer
S: France
......@@ -21,4 +21,5 @@ SOURCES_sgimb = sgimb.c
SOURCES_mjpeg = mjpeg.c
SOURCES_subtitle = subtitle.c
SOURCES_vobsub = vobsub.c
SOURCES_voc = voc.c
SOURCES_xa = xa.c
/*****************************************************************************
* voc.c : Creative Voice File (.VOC) demux module for vlc
*****************************************************************************
* Copyright (C) 2005 VideoLAN
* $Id: xa.c 10182 2005-03-07 15:04:53Z courmisch $
*
* Authors: Remi Denis-Courmont <rem # via.ecp.fr>
*
* 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 <vlc/vlc.h>
#include <vlc/input.h>
#include <vlc/aout.h>
#include <codecs.h>
/*****************************************************************************
* Module descriptor
*****************************************************************************/
static int Open ( vlc_object_t * );
static void Close( vlc_object_t * );
vlc_module_begin();
set_description( _("VOC demuxer") );
set_category( CAT_INPUT );
set_subcategory( SUBCAT_INPUT_DEMUX );
set_capability( "demux2", 10 );
set_callbacks( Open, Close );
vlc_module_end();
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static int Demux ( demux_t * );
static int Control( demux_t *, int i_query, va_list args );
struct demux_sys_t
{
es_format_t fmt;
es_out_id_t *p_es;
#if 0
int64_t i_data_offset;
unsigned int i_data_size;
#endif
int32_t i_block_size;
date_t pts;
};
static const char ct_header[] = "Creative Voice File\x1a";
/*****************************************************************************
* Open: check file and initializes structures
*****************************************************************************/
static int Open( vlc_object_t * p_this )
{
demux_t *p_demux = (demux_t*)p_this;
demux_sys_t *p_sys;
uint8_t *p_buf, buf[8];
uint16_t i_data_offset, i_version;
if( stream_Peek( p_demux->s, &p_buf, 26 ) < 26 )
return VLC_EGENERIC;
if( memcmp( p_buf, ct_header, 20 ) )
return VLC_EGENERIC;
p_buf += 20;
i_data_offset = GetWLE( p_buf );
if ( i_data_offset < 26 /* not enough room for full VOC header */ )
return VLC_EGENERIC;
p_buf += 2;
i_version = GetWLE( p_buf );
if( ( i_version != 0x10A ) && ( i_version != 0x114 ) )
return VLC_EGENERIC; /* unknown VOC version */
p_buf += 2;
if( GetWLE( p_buf ) != (uint16_t)(0x1234 + ~i_version) )
return VLC_EGENERIC;
/* We have a valid VOC header */
msg_Dbg( p_demux, "CT Voice file v%d.%d", i_version >> 8,
i_version & 0xff );
/* skip VOC header */
if( stream_Read( p_demux->s, NULL, i_data_offset ) < i_data_offset )
return VLC_EGENERIC;
/* read first block header */
/* FIXME: we only support one-block files at the moment */
if( stream_Read( p_demux->s, buf, 4 ) < 4 )
return VLC_EGENERIC;
p_demux->pf_demux = Demux;
p_demux->pf_control = Control;
p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
p_sys->i_block_size = GetDWLE( buf ) >> 8;
msg_Dbg( p_demux, "block size: %u bytes", p_sys->i_block_size );
es_format_Init( &p_sys->fmt, AUDIO_ES, 0 );
switch( *buf )
{
case 1:
if( p_sys->i_block_size < 2 )
goto error;
p_sys->i_block_size -= 2;
if( stream_Read( p_demux->s, buf, 2 ) < 2 )
goto error;
p_sys->fmt.audio.i_rate = 1000000L / (256L - buf[0]);
if( buf[1] )
{
msg_Err( p_demux, "Unsupported compression" );
goto error;
}
p_sys->fmt.i_codec = VLC_FOURCC('u','8',' ',' ');
p_sys->fmt.audio.i_bytes_per_frame = 1;
p_sys->fmt.audio.i_frame_length = 1;
p_sys->fmt.audio.i_channels = 1;
p_sys->fmt.audio.i_blockalign = 1;
p_sys->fmt.audio.i_bitspersample = 8;
p_sys->fmt.i_bitrate = p_sys->fmt.audio.i_rate * 8;
break;
case 9:
if( p_sys->i_block_size < 12 )
goto error;
p_sys->i_block_size -= 12;
if( ( stream_Read( p_demux->s, buf, 8 ) < 8 )
|| ( stream_Read( p_demux->s, NULL, 4 ) < 4 ) )
goto error;
p_sys->fmt.audio.i_rate = GetDWLE( buf );
p_sys->fmt.audio.i_bitspersample = buf[4];
p_sys->fmt.audio.i_channels = buf[5];
switch( GetWLE( &buf[6] ) ) /* format */
{
case 0x0000: /* PCM */
switch( p_sys->fmt.audio.i_bitspersample )
{
case 8:
p_sys->fmt.i_codec = VLC_FOURCC('u','8',' ',' ');
break;
case 16:
p_sys->fmt.i_codec = VLC_FOURCC('u','1','6','l');
break;
default:
msg_Err( p_demux, "Unsupported bit res.: %u bits",
p_sys->fmt.audio.i_bitspersample );
return VLC_EGENERIC;
}
break;
case 0x0004: /* signed */
switch( p_sys->fmt.audio.i_bitspersample )
{
case 8:
p_sys->fmt.i_codec = VLC_FOURCC('s','8',' ',' ');
break;
case 16:
p_sys->fmt.i_codec = VLC_FOURCC('s','1','6','l');
break;
default:
msg_Err( p_demux, "Unsupported bit res.: %u bits",
p_sys->fmt.audio.i_bitspersample );
return VLC_EGENERIC;
}
break;
default:
msg_Err( p_demux, "Unsupported compression" );
goto error;
}
p_sys->fmt.audio.i_bytes_per_frame = p_sys->fmt.audio.i_channels
* (p_sys->fmt.audio.i_bitspersample / 8);
p_sys->fmt.audio.i_frame_length = 1;
p_sys->fmt.audio.i_blockalign = p_sys->fmt.audio.i_bytes_per_frame;
p_sys->fmt.i_bitrate = 8 * p_sys->fmt.audio.i_rate
* p_sys->fmt.audio.i_bytes_per_frame;
break;
default:
msg_Dbg( p_demux, "Unsupported block type %u", (unsigned)*p_buf);
return VLC_EGENERIC;
}
p_sys->fmt.i_extra = 0;
p_sys->fmt.p_extra = NULL;
msg_Dbg( p_demux, "fourcc: %4.4s, channels: %d, "
"freq: %d Hz, bitrate: %dKo/s, blockalign: %d, bits/samples: %d",
(char *)&p_sys->fmt.i_codec, p_sys->fmt.audio.i_channels,
p_sys->fmt.audio.i_rate, p_sys->fmt.i_bitrate / 8192,
p_sys->fmt.audio.i_blockalign, p_sys->fmt.audio.i_bitspersample
);
p_sys->p_es = es_out_Add( p_demux->out, &p_sys->fmt );
date_Init( &p_sys->pts, p_sys->fmt.audio.i_rate, 1 );
date_Set( &p_sys->pts, 1 );
return VLC_SUCCESS;
error:
msg_Err( p_demux, "Unsupported or malformatted file" );
free( p_sys );
return VLC_EGENERIC;
}
/*****************************************************************************
* Demux: read packet and send them to decoders
*****************************************************************************
* Returns -1 in case of error, 0 in case of EOF, 1 otherwise
*****************************************************************************/
static int Demux( demux_t *p_demux )
{
demux_sys_t *p_sys = p_demux->p_sys;
block_t *p_block;
#if 0
int64_t i_offset;
i_offset = stream_Tell( p_demux->s );
if( p_sys->i_data_size > 0 &&
i_offset >= p_sys->i_data_offset + p_sys->i_data_size )
{
/* EOF */
return 0;
}
#endif
p_block = stream_Block( p_demux->s, p_sys->fmt.audio.i_bytes_per_frame );
if( p_block == NULL )
{
msg_Warn( p_demux, "cannot read data" );
return 0;
}
p_block->i_dts = p_block->i_pts =
date_Increment( &p_sys->pts, p_sys->fmt.audio.i_frame_length );
es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_block->i_pts );
es_out_Send( p_demux->out, p_sys->p_es, p_block );
return 1;
}
/*****************************************************************************
* Close: frees unused data
*****************************************************************************/
static void Close ( vlc_object_t * p_this )
{
demux_sys_t *p_sys = ((demux_t *)p_this)->p_sys;
free( p_sys );
}
/*****************************************************************************
* Control:
*****************************************************************************/
static int Control( demux_t *p_demux, int i_query, va_list args )
{
demux_sys_t *p_sys = p_demux->p_sys;
if( i_query == DEMUX_SET_POSITION )
return VLC_EGENERIC; /* not implemented yet */
return demux2_vaControlHelper( p_demux->s, 0, -1, p_sys->fmt.i_bitrate,
p_sys->fmt.audio.i_blockalign,
i_query, args );
}
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