/*****************************************************************************
* a52tospdif.c : encapsulates A/52 frames into S/PDIF packets
*****************************************************************************
- * Copyright (C) 2002, 2006 the VideoLAN team
+ * Copyright (C) 2002, 2006 VLC authors and VideoLAN
* $Id$
*
* Authors: Christophe Massiot <massiot@via.ecp.fr>
* Stéphane Borel <stef@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
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 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.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser 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.
+ * You should have received a copy of the GNU Lesser 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.
*****************************************************************************/
/*****************************************************************************
#include <vlc_common.h>
#include <vlc_plugin.h>
-#ifdef HAVE_UNISTD_H
-# include <unistd.h>
-#endif
-
#include <vlc_aout.h>
+#include <vlc_filter.h>
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static int Create ( vlc_object_t * );
-static void DoWork ( aout_instance_t *, aout_filter_t *, aout_buffer_t *,
- aout_buffer_t * );
+static block_t *DoWork( filter_t *, block_t * );
/*****************************************************************************
* Module descriptor
set_category( CAT_AUDIO )
set_subcategory( SUBCAT_AUDIO_MISC )
set_description( N_("Audio filter for A/52->S/PDIF encapsulation") )
- set_capability( "audio filter", 10 )
+ set_capability( "audio converter", 10 )
set_callbacks( Create, NULL )
vlc_module_end ()
*****************************************************************************/
static int Create( vlc_object_t *p_this )
{
- aout_filter_t * p_filter = (aout_filter_t *)p_this;
+ filter_t * p_filter = (filter_t *)p_this;
- if ( p_filter->input.i_format != VLC_CODEC_A52 ||
- ( p_filter->output.i_format != VLC_CODEC_SPDIFB &&
- p_filter->output.i_format != VLC_CODEC_SPDIFL ) )
+ if ( p_filter->fmt_in.audio.i_format != VLC_CODEC_A52 ||
+ ( p_filter->fmt_out.audio.i_format != VLC_CODEC_SPDIFB &&
+ p_filter->fmt_out.audio.i_format != VLC_CODEC_SPDIFL ) )
{
- return -1;
+ return VLC_EGENERIC;
}
- p_filter->pf_do_work = DoWork;
- p_filter->b_in_place = 0;
+ p_filter->pf_audio_filter = DoWork;
- return 0;
+ 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 )
+static block_t *DoWork( filter_t * p_filter, block_t *p_in_buf )
{
- VLC_UNUSED(p_aout);
/* AC3 is natively big endian. Most SPDIF devices have the native
* endianness of the computer system.
* On Mac OS X however, little endian devices are also common.
*/
static const uint8_t p_sync_le[6] = { 0x72, 0xF8, 0x1F, 0x4E, 0x01, 0x00 };
static const uint8_t p_sync_be[6] = { 0xF8, 0x72, 0x4E, 0x1F, 0x00, 0x01 };
- uint16_t i_frame_size = p_in_buf->i_nb_bytes / 2;
+ uint16_t i_frame_size = p_in_buf->i_buffer / 2;
uint8_t * p_in = p_in_buf->p_buffer;
+
+ block_t *p_out_buf = block_Alloc( AOUT_SPDIF_SIZE );
+ if( !p_out_buf )
+ goto out;
uint8_t * p_out = p_out_buf->p_buffer;
/* Copy the S/PDIF headers. */
- if( p_filter->output.i_format == VLC_CODEC_SPDIFB )
+ if( p_filter->fmt_out.audio.i_format == VLC_CODEC_SPDIFB )
{
- vlc_memcpy( p_out, p_sync_be, 6 );
+ memcpy( p_out, p_sync_be, 6 );
p_out[4] = p_in[5] & 0x7; /* bsmod */
- p_out[6] = (i_frame_size >> 4) & 0xff;
- p_out[7] = (i_frame_size << 4) & 0xff;
- vlc_memcpy( &p_out[8], p_in, i_frame_size * 2 );
+ SetWBE( p_out + 6, i_frame_size << 4 );
+ memcpy( &p_out[8], p_in, i_frame_size * 2 );
}
else
{
- vlc_memcpy( p_out, p_sync_le, 6 );
+ memcpy( p_out, p_sync_le, 6 );
p_out[5] = p_in[5] & 0x7; /* bsmod */
- p_out[6] = (i_frame_size << 4) & 0xff;
- p_out[7] = (i_frame_size >> 4) & 0xff;
+ SetWLE( p_out + 6, i_frame_size << 4 );
swab( p_in, &p_out[8], i_frame_size * 2 );
}
- vlc_memset( p_out + 8 + i_frame_size * 2, 0,
+ memset( p_out + 8 + i_frame_size * 2, 0,
AOUT_SPDIF_SIZE - i_frame_size * 2 - 8 );
+ p_out_buf->i_dts = p_in_buf->i_dts;
+ p_out_buf->i_pts = p_in_buf->i_pts;
p_out_buf->i_nb_samples = p_in_buf->i_nb_samples;
- p_out_buf->i_nb_bytes = AOUT_SPDIF_SIZE;
+ p_out_buf->i_buffer = AOUT_SPDIF_SIZE;
+out:
+ block_Release( p_in_buf );
+ return p_out_buf;
}
projects / vlc / blobdiff