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>
38 // use 16 bit signed integers as wavelet coefficients
40 // we'll actually use TYPE_BITS bits of type (e.g. 9 magnitude + 1 sign)
42 // use the rle entropy coder
47 /*****************************************************************************
48 * decoder_sys_t : tarkin decoder descriptor
49 *****************************************************************************/
55 TarkinStream *tarkin_stream;
57 TarkinInfo ti; /* tarkin bitstream settings */
58 TarkinComment tc; /* tarkin bitstream user comments */
65 /*****************************************************************************
67 *****************************************************************************/
68 static int OpenDecoder ( vlc_object_t * );
69 static void CloseDecoder ( vlc_object_t * );
71 static void *DecodeBlock ( decoder_t *, block_t ** );
72 static picture_t *DecodePacket ( decoder_t *, block_t **, ogg_packet * );
74 static void tarkin_CopyPicture( decoder_t *, picture_t *, uint8_t *, int );
76 /*****************************************************************************
78 *****************************************************************************/
80 set_description( N_("Tarkin decoder") )
81 set_capability( "decoder", 100 )
82 set_category( CAT_INPUT )
83 set_subcategory( SUBCAT_INPUT_VCODEC )
84 set_callbacks( OpenDecoder, CloseDecoder )
85 add_shortcut( "tarkin" )
88 /*****************************************************************************
89 * OpenDecoder: probe the decoder and return score
90 *****************************************************************************/
91 static int OpenDecoder( vlc_object_t *p_this )
93 decoder_t *p_dec = (decoder_t*)p_this;
96 if( p_dec->fmt_in.i_codec != VLC_FOURCC('t','a','r','k') )
101 /* Allocate the memory needed to store the decoder's structure */
102 if( ( p_dec->p_sys = p_sys =
103 (decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
106 /* Set output properties */
107 p_dec->fmt_out.i_cat = VIDEO_ES;
108 p_sys->i_headers = 0;
111 p_dec->pf_decode_video = (picture_t *(*)(decoder_t *, block_t **))
113 p_dec->pf_packetize = (block_t *(*)(decoder_t *, block_t **))
116 /* Init supporting Tarkin structures needed in header parsing */
117 p_sys->tarkin_stream = tarkin_stream_new();
118 tarkin_info_init( &p_sys->ti );
119 tarkin_comment_init( &p_sys->tc );
124 /****************************************************************************
125 * DecodeBlock: the whole thing
126 ****************************************************************************
127 * This function must be fed with ogg packets.
128 ****************************************************************************/
129 static void *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
131 decoder_sys_t *p_sys = p_dec->p_sys;
133 ogg_packet oggpacket;
135 if( !pp_block ) return NULL;
139 /* Block to Ogg packet */
140 oggpacket.packet = (*pp_block)->p_buffer;
141 oggpacket.bytes = (*pp_block)->i_buffer;
145 /* Block to Ogg packet */
146 oggpacket.packet = NULL;
152 oggpacket.granulepos = -1;
155 oggpacket.packetno = 0;
157 if( p_sys->i_headers == 0 )
159 /* Take care of the initial Tarkin header */
161 oggpacket.b_o_s = 1; /* yes this actually is a b_o_s packet :) */
162 if( tarkin_synthesis_headerin( &p_sys->ti, &p_sys->tc, &oggpacket )
165 msg_Err( p_dec, "this bitstream does not contain Tarkin "
167 block_Release( p_block );
172 block_Release( p_block );
176 if( p_sys->i_headers == 1 )
178 if( tarkin_synthesis_headerin( &p_sys->ti, &p_sys->tc, &oggpacket )
181 msg_Err( p_dec, "2nd Tarkin header is corrupted." );
182 block_Release( p_block );
186 block_Release( p_block );
190 if( p_sys->i_headers == 2 )
192 if( tarkin_synthesis_headerin( &p_sys->ti, &p_sys->tc, &oggpacket )
195 msg_Err( p_dec, "3rd Tarkin header is corrupted." );
196 block_Release( p_block );
201 /* Initialize the tarkin decoder */
202 tarkin_synthesis_init( p_sys->tarkin_stream, &p_sys->ti );
204 msg_Err( p_dec, "Tarkin codec initialized");
206 block_Release( p_block );
210 return DecodePacket( p_dec, pp_block, &oggpacket );
213 /*****************************************************************************
214 * DecodePacket: decodes a Tarkin packet.
215 *****************************************************************************/
216 static picture_t *DecodePacket( decoder_t *p_dec, block_t **pp_block,
217 ogg_packet *p_oggpacket )
219 decoder_sys_t *p_sys = p_dec->p_sys;
222 if( p_oggpacket->bytes )
224 tarkin_synthesis_packetin( p_sys->tarkin_stream, p_oggpacket );
225 //block_Release( *pp_block ); /* FIXME duplicate packet */
229 if( tarkin_synthesis_frameout( p_sys->tarkin_stream,
230 &rgb, 0, &p_sys->tarkdate ) == 0 )
232 int i_width, i_height, i_chroma, i_stride;
235 msg_Err( p_dec, "Tarkin frame decoded" );
237 i_width = p_sys->tarkin_stream->layer->desc.width;
238 i_height = p_sys->tarkin_stream->layer->desc.height;
240 switch( p_sys->tarkin_stream->layer->desc.format )
243 i_chroma = VLC_FOURCC('R','V','2','4');
244 i_stride = i_width * 3;
247 i_chroma = VLC_FOURCC('R','V','3','2');
248 i_stride = i_width * 4;
251 i_chroma = VLC_FOURCC('R','G','B','A');
252 i_stride = i_width * 4;
255 i_chroma = VLC_FOURCC('I','4','2','0');
260 /* Set output properties */
261 p_dec->fmt_out.video.i_width = i_width;
262 p_dec->fmt_out.video.i_height = i_height;
264 p_dec->fmt_out.video.i_aspect =
265 VOUT_ASPECT_FACTOR * i_width / i_height;
266 p_dec->fmt_out.i_codec = i_chroma;
268 /* Get a new picture */
269 if( (p_pic = decoder_NewPicture( p_dec )) )
271 tarkin_CopyPicture( p_dec, p_pic, rgb, i_stride );
273 tarkin_synthesis_freeframe( p_sys->tarkin_stream, rgb );
275 p_pic->date = mdate() + DEFAULT_PTS_DELAY/*i_pts*/;
284 /*****************************************************************************
285 * CloseDecoder: tarkin decoder destruction
286 *****************************************************************************/
287 static void CloseDecoder( vlc_object_t *p_this )
289 decoder_t *p_dec = (decoder_t *)p_this;
290 decoder_sys_t *p_sys = p_dec->p_sys;
292 tarkin_stream_destroy( p_sys->tarkin_stream );
297 /*****************************************************************************
298 * tarkin_CopyPicture: copy a picture from tarkin internal buffers to a
299 * picture_t structure.
300 *****************************************************************************/
301 static void tarkin_CopyPicture( decoder_t *p_dec, picture_t *p_pic,
302 uint8_t *p_src, int i_pitch )
304 int i_plane, i_line, i_src_stride, i_dst_stride;
307 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
309 p_dst = p_pic->p[i_plane].p_pixels;
310 i_dst_stride = p_pic->p[i_plane].i_pitch;
311 i_src_stride = i_pitch;
313 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines; i_line++ )
315 vlc_memcpy( p_dst, p_src, i_src_stride );
317 p_src += i_src_stride;
318 p_dst += i_dst_stride;