1 /*****************************************************************************
2 * tarkin.c: tarkin decoder module making use of libtarkin.
3 *****************************************************************************
4 * Copyright (C) 2001-2003 the VideoLAN team
7 * Authors: Gildas Bazin <gbazin@netcourrier.com>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
31 #include <vlc_common.h>
32 #include <vlc_plugin.h>
33 #include <vlc_codec.h>
37 // use 16 bit signed integers as wavelet coefficients
39 // we'll actually use TYPE_BITS bits of type (e.g. 9 magnitude + 1 sign)
41 // use the rle entropy coder
46 /*****************************************************************************
47 * decoder_sys_t : tarkin decoder descriptor
48 *****************************************************************************/
54 TarkinStream *tarkin_stream;
56 TarkinInfo ti; /* tarkin bitstream settings */
57 TarkinComment tc; /* tarkin bitstream user comments */
64 /*****************************************************************************
66 *****************************************************************************/
67 static int OpenDecoder ( vlc_object_t * );
68 static void CloseDecoder ( vlc_object_t * );
70 static void *DecodeBlock ( decoder_t *, block_t ** );
71 static picture_t *DecodePacket ( decoder_t *, block_t **, ogg_packet * );
73 static void tarkin_CopyPicture( decoder_t *, picture_t *, uint8_t *, int );
75 /*****************************************************************************
77 *****************************************************************************/
79 set_description( N_("Tarkin decoder") )
80 set_capability( "decoder", 100 )
81 set_category( CAT_INPUT )
82 set_subcategory( SUBCAT_INPUT_VCODEC )
83 set_callbacks( OpenDecoder, CloseDecoder )
84 add_shortcut( "tarkin" )
87 /*****************************************************************************
88 * OpenDecoder: probe the decoder and return score
89 *****************************************************************************/
90 static int OpenDecoder( vlc_object_t *p_this )
92 decoder_t *p_dec = (decoder_t*)p_this;
95 if( p_dec->fmt_in.i_codec != VLC_CODEC_TARKIN )
100 /* Allocate the memory needed to store the decoder's structure */
101 if( ( p_dec->p_sys = p_sys =
102 (decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
105 /* Set output properties */
106 p_dec->fmt_out.i_cat = VIDEO_ES;
107 p_sys->i_headers = 0;
110 p_dec->pf_decode_video = (picture_t *(*)(decoder_t *, block_t **))
112 p_dec->pf_packetize = (block_t *(*)(decoder_t *, block_t **))
115 /* Init supporting Tarkin structures needed in header parsing */
116 p_sys->tarkin_stream = tarkin_stream_new();
117 tarkin_info_init( &p_sys->ti );
118 tarkin_comment_init( &p_sys->tc );
123 /****************************************************************************
124 * DecodeBlock: the whole thing
125 ****************************************************************************
126 * This function must be fed with ogg packets.
127 ****************************************************************************/
128 static void *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
130 decoder_sys_t *p_sys = p_dec->p_sys;
132 ogg_packet oggpacket;
134 if( !pp_block ) return NULL;
138 /* Block to Ogg packet */
139 oggpacket.packet = (*pp_block)->p_buffer;
140 oggpacket.bytes = (*pp_block)->i_buffer;
144 /* Block to Ogg packet */
145 oggpacket.packet = NULL;
151 oggpacket.granulepos = -1;
154 oggpacket.packetno = 0;
156 if( p_sys->i_headers == 0 )
158 /* Take care of the initial Tarkin header */
160 oggpacket.b_o_s = 1; /* yes this actually is a b_o_s packet :) */
161 if( tarkin_synthesis_headerin( &p_sys->ti, &p_sys->tc, &oggpacket )
164 msg_Err( p_dec, "this bitstream does not contain Tarkin "
166 block_Release( p_block );
171 block_Release( p_block );
175 if( p_sys->i_headers == 1 )
177 if( tarkin_synthesis_headerin( &p_sys->ti, &p_sys->tc, &oggpacket )
180 msg_Err( p_dec, "2nd Tarkin header is corrupted." );
181 block_Release( p_block );
185 block_Release( p_block );
189 if( p_sys->i_headers == 2 )
191 if( tarkin_synthesis_headerin( &p_sys->ti, &p_sys->tc, &oggpacket )
194 msg_Err( p_dec, "3rd Tarkin header is corrupted." );
195 block_Release( p_block );
200 /* Initialize the tarkin decoder */
201 tarkin_synthesis_init( p_sys->tarkin_stream, &p_sys->ti );
203 msg_Err( p_dec, "Tarkin codec initialized");
205 block_Release( p_block );
209 return DecodePacket( p_dec, pp_block, &oggpacket );
212 /*****************************************************************************
213 * DecodePacket: decodes a Tarkin packet.
214 *****************************************************************************/
215 static picture_t *DecodePacket( decoder_t *p_dec, block_t **pp_block,
216 ogg_packet *p_oggpacket )
218 decoder_sys_t *p_sys = p_dec->p_sys;
221 if( p_oggpacket->bytes )
223 tarkin_synthesis_packetin( p_sys->tarkin_stream, p_oggpacket );
224 //block_Release( *pp_block ); /* FIXME duplicate packet */
228 if( tarkin_synthesis_frameout( p_sys->tarkin_stream,
229 &rgb, 0, &p_sys->tarkdate ) == 0 )
231 int i_width, i_height, i_chroma, i_stride;
234 msg_Err( p_dec, "Tarkin frame decoded" );
236 i_width = p_sys->tarkin_stream->layer->desc.width;
237 i_height = p_sys->tarkin_stream->layer->desc.height;
239 switch( p_sys->tarkin_stream->layer->desc.format )
242 i_chroma = VLC_CODEC_RGB24;
243 i_stride = i_width * 3;
246 i_chroma = VLC_CODEC_RGB32;
247 i_stride = i_width * 4;
250 i_chroma = VLC_CODEC_RGBA;
251 i_stride = i_width * 4;
254 i_chroma = VLC_CODEC_I420;
259 /* Set output properties */
260 p_dec->fmt_out.video.i_width = i_width;
261 p_dec->fmt_out.video.i_height = i_height;
263 p_dec->fmt_out.video.i_sar_num = 1;
264 p_dec->fmt_out.video.i_sar_den = 1;
265 p_dec->fmt_out.i_codec = i_chroma;
267 /* Get a new picture */
268 if( (p_pic = decoder_NewPicture( p_dec )) )
270 tarkin_CopyPicture( p_dec, p_pic, rgb, i_stride );
272 tarkin_synthesis_freeframe( p_sys->tarkin_stream, rgb );
274 p_pic->date = mdate() + DEFAULT_PTS_DELAY/*i_pts*/;
283 /*****************************************************************************
284 * CloseDecoder: tarkin decoder destruction
285 *****************************************************************************/
286 static void CloseDecoder( vlc_object_t *p_this )
288 decoder_t *p_dec = (decoder_t *)p_this;
289 decoder_sys_t *p_sys = p_dec->p_sys;
291 tarkin_stream_destroy( p_sys->tarkin_stream );
296 /*****************************************************************************
297 * tarkin_CopyPicture: copy a picture from tarkin internal buffers to a
298 * picture_t structure.
299 *****************************************************************************/
300 static void tarkin_CopyPicture( decoder_t *p_dec, picture_t *p_pic,
301 uint8_t *p_src, int i_pitch )
303 int i_plane, i_line, i_src_stride, i_dst_stride;
306 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
308 p_dst = p_pic->p[i_plane].p_pixels;
309 i_dst_stride = p_pic->p[i_plane].i_pitch;
310 i_src_stride = i_pitch;
312 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines; i_line++ )
314 vlc_memcpy( p_dst, p_src, i_src_stride );
316 p_src += i_src_stride;
317 p_dst += i_dst_stride;