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/*****************************************************************************
* tarkin.c: tarkin decoder module making use of libtarkin.
*****************************************************************************
* Copyright (C) 2001-2003 VideoLAN
* $Id: tarkin.c,v 1.8 2003/11/22 15:06:50 gbazin Exp $
*
* Authors: Gildas Bazin <gbazin@netcourrier.com>
*
* 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 <vlc/vlc.h>
#include <vlc/input.h>
#include <vlc/decoder.h>
#include <ogg/ogg.h>
/* FIXME */
// use 16 bit signed integers as wavelet coefficients
#define TYPE int16_t
// we'll actually use TYPE_BITS bits of type (e.g. 9 magnitude + 1 sign)
#define TYPE_BITS 10
// use the rle entropy coder
#define RLECODER 1
#include <tarkin.h>
/*****************************************************************************
* decoder_sys_t : tarkin decoder descriptor
*****************************************************************************/
struct decoder_sys_t
{
/*
* Tarkin properties
*/
TarkinStream *tarkin_stream;
TarkinInfo ti; /* tarkin bitstream settings */
TarkinComment tc; /* tarkin bitstream user comments */
TarkinTime tarkdate;
int i_headers;
mtime_t i_pts;
};
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static int OpenDecoder ( vlc_object_t * );
static void CloseDecoder ( vlc_object_t * );
static void *DecodeBlock ( decoder_t *, block_t ** );
static picture_t *DecodePacket ( decoder_t *, block_t **, ogg_packet * );
static void tarkin_CopyPicture( decoder_t *, picture_t *, uint8_t *, int );
/*****************************************************************************
* Module descriptor
*****************************************************************************/
vlc_module_begin();
set_description( _("Tarkin decoder module") );
set_capability( "decoder", 100 );
set_callbacks( OpenDecoder, CloseDecoder );
add_shortcut( "tarkin" );
vlc_module_end();
/*****************************************************************************
* OpenDecoder: probe the decoder and return score
*****************************************************************************/
static int OpenDecoder( vlc_object_t *p_this )
{
decoder_t *p_dec = (decoder_t*)p_this;
decoder_sys_t *p_sys;
if( p_dec->fmt_in.i_codec != VLC_FOURCC('t','a','r','k') )
{
return VLC_EGENERIC;
}
/* Allocate the memory needed to store the decoder's structure */
if( ( p_dec->p_sys = p_sys =
(decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
{
msg_Err( p_dec, "out of memory" );
return VLC_EGENERIC;
}
/* Set output properties */
p_dec->fmt_out.i_cat = VIDEO_ES;
p_sys->i_headers = 0;
/* Set callbacks */
p_dec->pf_decode_video = (picture_t *(*)(decoder_t *, block_t **))
DecodeBlock;
p_dec->pf_packetize = (block_t *(*)(decoder_t *, block_t **))
DecodeBlock;
/* Init supporting Tarkin structures needed in header parsing */
p_sys->tarkin_stream = tarkin_stream_new();
tarkin_info_init( &p_sys->ti );
tarkin_comment_init( &p_sys->tc );
return VLC_SUCCESS;
}
/****************************************************************************
* DecodeBlock: the whole thing
****************************************************************************
* This function must be fed with ogg packets.
****************************************************************************/
static void *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
{
decoder_sys_t *p_sys = p_dec->p_sys;
block_t *p_block;
ogg_packet oggpacket;
if( !pp_block ) return NULL;
if( *pp_block )
{
/* Block to Ogg packet */
oggpacket.packet = (*pp_block)->p_buffer;
oggpacket.bytes = (*pp_block)->i_buffer;
}
else
{
/* Block to Ogg packet */
oggpacket.packet = NULL;
oggpacket.bytes = 0;
}
p_block = *pp_block;
oggpacket.granulepos = -1;
oggpacket.b_o_s = 0;
oggpacket.e_o_s = 0;
oggpacket.packetno = 0;
if( p_sys->i_headers == 0 )
{
/* Take care of the initial Tarkin header */
oggpacket.b_o_s = 1; /* yes this actually is a b_o_s packet :) */
if( tarkin_synthesis_headerin( &p_sys->ti, &p_sys->tc, &oggpacket )
< 0 )
{
msg_Err( p_dec, "This bitstream does not contain Tarkin "
"video data");
block_Release( p_block );
return NULL;
}
p_sys->i_headers++;
block_Release( p_block );
return NULL;
}
if( p_sys->i_headers == 1 )
{
if( tarkin_synthesis_headerin( &p_sys->ti, &p_sys->tc, &oggpacket )
< 0 )
{
msg_Err( p_dec, "2nd Tarkin header is corrupted" );
block_Release( p_block );
return NULL;
}
p_sys->i_headers++;
block_Release( p_block );
return NULL;
}
if( p_sys->i_headers == 2 )
{
if( tarkin_synthesis_headerin( &p_sys->ti, &p_sys->tc, &oggpacket )
< 0 )
{
msg_Err( p_dec->p_fifo, "3rd Tarkin header is corrupted" );
block_Release( p_block );
return NULL;
}
p_sys->i_headers++;
/* Initialize the tarkin decoder */
tarkin_synthesis_init( p_sys->tarkin_stream, &p_sys->ti );
msg_Err( p_dec, "Tarkin codec initialized");
block_Release( p_block );
return NULL;
}
return DecodePacket( p_dec, pp_block, &oggpacket );
}
/*****************************************************************************
* DecodePacket: decodes a Tarkin packet.
*****************************************************************************/
static picture_t *DecodePacket( decoder_t *p_dec, block_t **pp_block,
ogg_packet *p_oggpacket )
{
decoder_sys_t *p_sys = p_dec->p_sys;
uint8_t *rgb;
if( p_oggpacket->bytes )
{
tarkin_synthesis_packetin( p_sys->tarkin_stream, p_oggpacket );
//block_Release( *pp_block ); /* FIXME duplicate packet */
*pp_block = NULL;
}
if( tarkin_synthesis_frameout( p_sys->tarkin_stream,
&rgb, 0, &p_sys->tarkdate ) == 0 )
{
int i_width, i_height, i_chroma, i_stride;
picture_t *p_pic;
msg_Err( p_dec, "Tarkin frame decoded" );
i_width = p_sys->tarkin_stream->layer->desc.width;
i_height = p_sys->tarkin_stream->layer->desc.height;
switch( p_sys->tarkin_stream->layer->desc.format )
{
case TARKIN_RGB24:
i_chroma = VLC_FOURCC('R','V','2','4');
i_stride = i_width * 3;
break;
case TARKIN_RGB32:
i_chroma = VLC_FOURCC('R','V','3','2');
i_stride = i_width * 4;
break;
case TARKIN_RGBA:
i_chroma = VLC_FOURCC('R','G','B','A');
i_stride = i_width * 4;
break;
default:
i_chroma = VLC_FOURCC('I','4','2','0');
i_stride = i_width;
break;
}
/* Set output properties */
p_dec->fmt_out.video.i_width = i_width;
p_dec->fmt_out.video.i_height = i_height;
p_dec->fmt_out.video.i_aspect =
VOUT_ASPECT_FACTOR * i_width / i_height;
p_dec->fmt_out.i_codec = i_chroma;
/* Get a new picture */
if( (p_pic = p_dec->pf_vout_buffer_new( p_dec )) )
{
tarkin_CopyPicture( p_dec, p_pic, rgb, i_stride );
tarkin_synthesis_freeframe( p_sys->tarkin_stream, rgb );
p_pic->date = mdate() + DEFAULT_PTS_DELAY/*i_pts*/;
return p_pic;
}
}
return NULL;
}
/*****************************************************************************
* CloseDecoder: tarkin decoder destruction
*****************************************************************************/
static void CloseDecoder( vlc_object_t *p_this )
{
decoder_t *p_dec = (decoder_t *)p_this;
decoder_sys_t *p_sys = p_dec->p_sys;
tarkin_stream_destroy( p_sys->tarkin_stream );
free( p_sys );
}
/*****************************************************************************
* tarkin_CopyPicture: copy a picture from tarkin internal buffers to a
* picture_t structure.
*****************************************************************************/
static void tarkin_CopyPicture( decoder_t *p_dec, picture_t *p_pic,
uint8_t *p_src, int i_pitch )
{
int i_plane, i_line, i_src_stride, i_dst_stride;
uint8_t *p_dst;
for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
{
p_dst = p_pic->p[i_plane].p_pixels;
i_dst_stride = p_pic->p[i_plane].i_pitch;
i_src_stride = i_pitch;
for( i_line = 0; i_line < p_pic->p[i_plane].i_lines; i_line++ )
{
p_dec->p_fifo->p_vlc->pf_memcpy( p_dst, p_src,
i_src_stride );
p_src += i_src_stride;
p_dst += i_dst_stride;
}
}
}