/*****************************************************************************
* dtstospdif.c : encapsulates DTS frames into S/PDIF packets
*****************************************************************************
- * Copyright (C) 2003, 2006 the VideoLAN team
+ * Copyright (C) 2003-2009 the VideoLAN team
* $Id$
*
* Authors: Jon Lech Johansen <jon-vl@nanocrew.net>
+ * Gildas Bazin
+ * Derk-Jan Hartman
+ * Pierre d'Herbemont
+ * Rémi Denis-Courmont
+ * Rafaël Carré
*
* 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
# include "config.h"
#endif
+#define VLC_MODULE_LICENSE VLC_LICENSE_GPL_2_PLUS
#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 structures
*****************************************************************************/
-struct aout_filter_sys_t
+struct filter_sys_t
{
- /* 3 DTS frames have to be packed into an S/PDIF frame.
+ mtime_t start_date;
+
+ /* 3 DTS frames (max 2048) have to be packed into an S/PDIF frame (6144).
* We accumulate DTS frames from the decoder until we have enough to
* send. */
-
+ size_t i_frame_size;
uint8_t *p_buf;
-
- mtime_t start_date;
-
- int i_frames;
- unsigned int i_frame_size;
+ unsigned i_frames;
};
/*****************************************************************************
*****************************************************************************/
static int Create ( vlc_object_t * );
static void Close ( 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 DTS->S/PDIF encapsulation") )
- set_capability( "audio filter", 10 )
+ set_capability( "audio converter", 10 )
set_callbacks( Create, Close )
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;
+ filter_sys_t *p_sys;
- if( p_filter->input.i_format != VLC_CODEC_DTS ||
- ( p_filter->output.i_format != VLC_CODEC_SPDIFL &&
- p_filter->output.i_format != VLC_CODEC_SPDIFB ) )
+ if( p_filter->fmt_in.audio.i_format != VLC_CODEC_DTS ||
+ ( p_filter->fmt_out.audio.i_format != VLC_CODEC_SPDIFL &&
+ p_filter->fmt_out.audio.i_format != VLC_CODEC_SPDIFB ) )
{
- return -1;
+ return VLC_EGENERIC;
}
/* Allocate the memory needed to store the module's structure */
- p_filter->p_sys = calloc( 1, sizeof(struct aout_filter_sys_t) );
- if( !p_filter->p_sys )
+ p_sys = p_filter->p_sys = malloc( sizeof(*p_sys) );
+ if( !p_sys )
return VLC_ENOMEM;
- p_filter->pf_do_work = DoWork;
- p_filter->b_in_place = 1;
+ p_sys->p_buf = NULL;
+ p_sys->i_frame_size = 0;
+ p_sys->i_frames = 0;
- return 0;
+ p_filter->pf_audio_filter = DoWork;
+
+ return VLC_SUCCESS;
}
/*****************************************************************************
*****************************************************************************/
static void Close( vlc_object_t * p_this )
{
- aout_filter_t * p_filter = (aout_filter_t *)p_this;
- if( p_filter->p_sys->i_frame_size ) free( p_filter->p_sys->p_buf );
+ filter_t * p_filter = (filter_t *)p_this;
+
+ free( p_filter->p_sys->p_buf );
free( p_filter->p_sys );
}
/*****************************************************************************
* 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 )
{
uint32_t i_ac5_spdif_type = 0;
uint16_t i_fz = p_in_buf->i_nb_samples * 4;
- uint16_t i_frame, i_length = p_in_buf->i_nb_bytes;
+ uint16_t i_frame, i_length = p_in_buf->i_buffer;
static const uint8_t p_sync_le[6] = { 0x72, 0xF8, 0x1F, 0x4E, 0x00, 0x00 };
static const uint8_t p_sync_be[6] = { 0xF8, 0x72, 0x4E, 0x1F, 0x00, 0x00 };
- if( p_in_buf->i_nb_bytes != p_filter->p_sys->i_frame_size )
+ if( p_in_buf->i_buffer != p_filter->p_sys->i_frame_size )
{
/* Frame size changed, reset everything */
- msg_Warn( p_aout, "Frame size changed from %u to %u, "
+ msg_Warn( p_filter, "Frame size changed from %zu to %zu, "
"resetting everything.",
- p_filter->p_sys->i_frame_size,
- (unsigned)p_in_buf->i_nb_bytes );
+ p_filter->p_sys->i_frame_size, p_in_buf->i_buffer );
- p_filter->p_sys->i_frame_size = p_in_buf->i_nb_bytes;
- p_filter->p_sys->p_buf = realloc( p_filter->p_sys->p_buf,
- p_in_buf->i_nb_bytes * 3 );
+ p_filter->p_sys->i_frame_size = p_in_buf->i_buffer;
+ p_filter->p_sys->p_buf = xrealloc( p_filter->p_sys->p_buf,
+ p_in_buf->i_buffer * 3 );
p_filter->p_sys->i_frames = 0;
}
/* Backup frame */
- vlc_memcpy( p_filter->p_sys->p_buf + p_in_buf->i_nb_bytes *
+ /* TODO: keeping the blocks in a list would save one memcpy */
+ memcpy( p_filter->p_sys->p_buf + p_in_buf->i_buffer *
p_filter->p_sys->i_frames,
- p_in_buf->p_buffer, p_in_buf->i_nb_bytes );
+ p_in_buf->p_buffer, p_in_buf->i_buffer );
p_filter->p_sys->i_frames++;
{
if( p_filter->p_sys->i_frames == 1 )
/* We'll need the starting date */
- p_filter->p_sys->start_date = p_in_buf->start_date;
+ p_filter->p_sys->start_date = p_in_buf->i_pts;
/* Not enough data */
- p_out_buf->i_nb_samples = 0;
- p_out_buf->i_nb_bytes = 0;
- return;
+ block_Release( p_in_buf );
+ return NULL;
}
p_filter->p_sys->i_frames = 0;
+ block_t *p_out_buf = block_Alloc( 12 * p_in_buf->i_nb_samples );
+ if( !p_out_buf )
+ goto out;
for( i_frame = 0; i_frame < 3; i_frame++ )
{
}
/* 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[5] = i_ac5_spdif_type;
- p_out[6] = (( i_length ) >> 5 ) & 0xFF;
- p_out[7] = ( i_length << 3 ) & 0xFF;
+ SetWBE( p_out + 6, i_length << 3 );
}
else
{
- vlc_memcpy( p_out, p_sync_le, 6 );
+ memcpy( p_out, p_sync_le, 6 );
p_out[4] = i_ac5_spdif_type;
- p_out[6] = ( i_length << 3 ) & 0xFF;
- p_out[7] = (( i_length ) >> 5 ) & 0xFF;
+ SetWLE( p_out + 6, i_length << 3 );
}
- if( ( (p_in[0] == 0x1F || p_in[0] == 0x7F) && p_filter->output.i_format == VLC_CODEC_SPDIFL ) ||
- ( (p_in[0] == 0xFF || p_in[0] == 0xFE) && p_filter->output.i_format == VLC_CODEC_SPDIFB ) )
+ if( ( (p_in[0] == 0x1F || p_in[0] == 0x7F) && p_filter->fmt_out.audio.i_format == VLC_CODEC_SPDIFL ) ||
+ ( (p_in[0] == 0xFF || p_in[0] == 0xFE) && p_filter->fmt_out.audio.i_format == VLC_CODEC_SPDIFB ) )
{
/* We are dealing with a big endian bitstream and a little endian output
* or a little endian bitstream and a big endian output.
}
else
{
- vlc_memcpy( p_out + 8, p_in, i_length );
+ memcpy( p_out + 8, p_in, i_length );
}
if( i_fz > i_length + 8 )
{
- vlc_memset( p_out + 8 + i_length_padded, 0,
+ memset( p_out + 8 + i_length_padded, 0,
i_fz - i_length_padded - 8 );
}
}
- p_out_buf->start_date = p_filter->p_sys->start_date;
+ p_out_buf->i_pts = p_filter->p_sys->start_date;
p_out_buf->i_nb_samples = p_in_buf->i_nb_samples * 3;
- p_out_buf->i_nb_bytes = p_out_buf->i_nb_samples * 4;
+ p_out_buf->i_buffer = p_out_buf->i_nb_samples * 4;
+out:
+ block_Release( p_in_buf );
+ return p_out_buf;
}
projects / vlc / blobdiff