+++ /dev/null
-/*****************************************************************************
- * tarkin.c: tarkin decoder module making use of libtarkin.
- *****************************************************************************
- * Copyright (C) 2001-2003 the VideoLAN team
- * $Id$
- *
- * 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- *****************************************************************************/
-
-/*****************************************************************************
- * Preamble
- *****************************************************************************/
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-
-#include <vlc_common.h>
-#include <vlc_plugin.h>
-#include <vlc_codec.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( N_("Tarkin decoder") )
- set_capability( "decoder", 100 )
- set_category( CAT_INPUT )
- set_subcategory( SUBCAT_INPUT_VCODEC )
- 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_CODEC_TARKIN )
- {
- 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 )
- return VLC_ENOMEM;
-
- /* 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, "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_CODEC_RGB24;
- i_stride = i_width * 3;
- break;
- case TARKIN_RGB32:
- i_chroma = VLC_CODEC_RGB32;
- i_stride = i_width * 4;
- break;
- case TARKIN_RGBA:
- i_chroma = VLC_CODEC_RGBA;
- i_stride = i_width * 4;
- break;
- default:
- i_chroma = VLC_CODEC_I420;
- 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_sar_num = 1;
- p_dec->fmt_out.video.i_sar_den = 1;
- p_dec->fmt_out.i_codec = i_chroma;
-
- /* Get a new picture */
- if( (p_pic = decoder_NewPicture( 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_visible_lines; i_line++ )
- {
- vlc_memcpy( p_dst, p_src, i_src_stride );
-
- p_src += i_src_stride;
- p_dst += i_dst_stride;
- }
- }
-}
projects / vlc / commitdiff