1 /*****************************************************************************
2 * tarkin.c: tarkin decoder module making use of libtarkin.
3 *****************************************************************************
4 * Copyright (C) 1999-2001 VideoLAN
5 * $Id: tarkin.c,v 1.7 2003/11/16 21:07:30 gbazin Exp $
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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
29 #include <vlc/input.h>
30 #include <vlc/decoder.h>
32 #include <stdlib.h> /* malloc(), free() */
33 #include <string.h> /* memcpy(), memset() */
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 * dec_thread_t : tarkin decoder thread descriptor
49 *****************************************************************************/
50 typedef struct dec_thread_t
55 vlc_thread_t thread_id; /* id for thread functions */
60 TarkinStream *tarkin_stream;
62 TarkinInfo ti; /* tarkin bitstream settings */
63 TarkinComment tc; /* tarkin bitstream user comments */
69 decoder_fifo_t *p_fifo; /* stores the PES stream data */
70 pes_packet_t *p_pes; /* current PES we are decoding */
75 vout_thread_t *p_vout;
79 /*****************************************************************************
81 *****************************************************************************/
82 static int OpenDecoder ( vlc_object_t * );
83 static int RunDecoder ( decoder_fifo_t * );
84 static void CloseDecoder ( dec_thread_t * );
86 static void DecodePacket ( dec_thread_t * );
87 static int GetOggPacket ( dec_thread_t *, ogg_packet *, mtime_t * );
89 static void tarkin_CopyPicture( dec_thread_t *, picture_t *, uint8_t *, int );
91 /*****************************************************************************
93 *****************************************************************************/
95 set_description( _("Tarkin decoder module") );
96 set_capability( "decoder", 100 );
97 set_callbacks( OpenDecoder, NULL );
98 add_shortcut( "tarkin" );
101 /*****************************************************************************
102 * OpenDecoder: probe the decoder and return score
103 *****************************************************************************/
104 static int OpenDecoder( vlc_object_t *p_this )
106 decoder_t *p_dec = (decoder_t*)p_this;
108 if( p_dec->fmt_in.i_codec != VLC_FOURCC('t','a','r','k') )
113 p_dec->pf_run = RunDecoder;
117 /*****************************************************************************
118 * RunDecoder: the tarkin decoder
119 *****************************************************************************/
120 static int RunDecoder( decoder_fifo_t *p_fifo )
123 ogg_packet oggpacket;
126 /* Allocate the memory needed to store the thread's structure */
127 if( (p_dec = (dec_thread_t *)malloc (sizeof(dec_thread_t)) )
130 msg_Err( p_fifo, "out of memory" );
134 /* Initialize the thread properties */
135 memset( p_dec, 0, sizeof(dec_thread_t) );
136 p_dec->p_fifo = p_fifo;
138 p_dec->p_vout = NULL;
140 /* Take care of the initial Tarkin header */
141 p_dec->tarkin_stream = tarkin_stream_new();
142 tarkin_info_init(&p_dec->ti);
143 tarkin_comment_init(&p_dec->tc);
145 if( GetOggPacket( p_dec, &oggpacket, &i_pts ) != VLC_SUCCESS )
148 oggpacket.b_o_s = 1; /* yes this actually is a b_o_s packet :) */
149 if( tarkin_synthesis_headerin( &p_dec->ti, &p_dec->tc, &oggpacket ) < 0 )
151 msg_Err( p_dec->p_fifo, "This bitstream does not contain Tarkin "
156 /* The next two packets in order are the comment and codebook headers.
157 We need to watch out that these packets are not missing as a
158 missing or corrupted header is fatal. */
159 if( GetOggPacket( p_dec, &oggpacket, &i_pts ) != VLC_SUCCESS )
162 if( tarkin_synthesis_headerin( &p_dec->ti, &p_dec->tc, &oggpacket ) < 0 )
164 msg_Err( p_dec->p_fifo, "2nd Tarkin header is corrupted" );
168 if( GetOggPacket( p_dec, &oggpacket, &i_pts ) != VLC_SUCCESS )
171 if( tarkin_synthesis_headerin( &p_dec->ti, &p_dec->tc, &oggpacket ) < 0 )
173 msg_Err( p_dec->p_fifo, "3rd Tarkin header is corrupted" );
177 /* Initialize the tarkin decoder */
178 tarkin_synthesis_init( p_dec->tarkin_stream, &p_dec->ti );
180 /* tarkin decoder thread's main loop */
181 while( (!p_dec->p_fifo->b_die) && (!p_dec->p_fifo->b_error) )
183 DecodePacket( p_dec );
186 /* If b_error is set, the tarkin decoder thread enters the error loop */
187 if( p_dec->p_fifo->b_error )
189 DecoderError( p_dec->p_fifo );
192 /* End of the tarkin decoder thread */
193 CloseDecoder( p_dec );
198 DecoderError( p_fifo );
202 p_dec->p_fifo->b_error = 1;
204 /* End of the tarkin decoder thread */
205 CloseDecoder( p_dec );
211 /*****************************************************************************
212 * DecodePacket: decodes a Tarkin packet.
213 *****************************************************************************/
214 static void DecodePacket( dec_thread_t *p_dec )
216 ogg_packet oggpacket;
219 int i_width, i_height, i_chroma, i_stride, i_aspect;
222 if( GetOggPacket( p_dec, &oggpacket, &i_pts ) != VLC_SUCCESS )
224 /* This should mean an eos */
228 tarkin_synthesis_packetin( p_dec->tarkin_stream, &oggpacket );
230 while( tarkin_synthesis_frameout( p_dec->tarkin_stream,
231 &rgb, 0, &p_dec->tarkdate ) == 0 )
234 i_width = p_dec->tarkin_stream->layer->desc.width;
235 i_height = p_dec->tarkin_stream->layer->desc.height;
236 switch( p_dec->tarkin_stream->layer->desc.format )
239 /*i_chroma = VLC_FOURCC('R','G','B','A');*/
240 i_chroma = VLC_FOURCC('R','V','2','4');
241 i_stride = i_width * 3;
244 i_chroma = VLC_FOURCC('R','V','3','2');
245 i_stride = i_width * 4;
248 i_chroma = VLC_FOURCC('R','G','B','A');
249 i_stride = i_width * 4;
252 i_chroma = VLC_FOURCC('Y','V','1','2');
256 i_aspect = VOUT_ASPECT_FACTOR * i_width / i_height;
257 p_dec->p_vout = vout_Request( p_dec->p_fifo, p_dec->p_vout,
258 i_width, i_height, i_chroma, i_aspect );
260 /* Get a new picture */
261 while( !(p_pic = vout_CreatePicture( p_dec->p_vout, 0, 0, 0 ) ) )
263 if( p_dec->p_fifo->b_die || p_dec->p_fifo->b_error )
267 msleep( VOUT_OUTMEM_SLEEP );
272 tarkin_CopyPicture( p_dec, p_pic, rgb, i_stride );
274 tarkin_synthesis_freeframe( p_dec->tarkin_stream, rgb );
276 vout_DatePicture( p_dec->p_vout, p_pic, mdate()+DEFAULT_PTS_DELAY/*i_pts*/ );
277 vout_DisplayPicture( p_dec->p_vout, p_pic );
282 /*****************************************************************************
283 * GetOggPacket: get the following tarkin packet from the stream and send back
284 * the result in an ogg packet (for easy decoding by libtarkin).
285 *****************************************************************************
286 * Returns VLC_EGENERIC in case of eof.
287 *****************************************************************************/
288 static int GetOggPacket( dec_thread_t *p_dec, ogg_packet *p_oggpacket,
291 if( p_dec->p_pes ) input_DeletePES( p_dec->p_fifo->p_packets_mgt,
294 input_ExtractPES( p_dec->p_fifo, &p_dec->p_pes );
295 if( !p_dec->p_pes ) return VLC_EGENERIC;
297 p_oggpacket->packet = p_dec->p_pes->p_first->p_payload_start;
298 p_oggpacket->bytes = p_dec->p_pes->i_pes_size;
299 p_oggpacket->granulepos = p_dec->p_pes->i_dts;
300 p_oggpacket->b_o_s = 0;
301 p_oggpacket->e_o_s = 0;
302 p_oggpacket->packetno = 0;
304 *p_pts = p_dec->p_pes->i_pts;
309 /*****************************************************************************
310 * CloseDecoder: tarkin decoder destruction
311 *****************************************************************************/
312 static void CloseDecoder( dec_thread_t * p_dec )
318 input_DeletePES( p_dec->p_fifo->p_packets_mgt, p_dec->p_pes );
320 vout_Request( p_dec->p_fifo, p_dec->p_vout, 0, 0, 0, 0 );
322 if( p_dec->tarkin_stream )
323 tarkin_stream_destroy( p_dec->tarkin_stream );
329 /*****************************************************************************
330 * tarkin_CopyPicture: copy a picture from tarkin internal buffers to a
331 * picture_t structure.
332 *****************************************************************************/
333 static void tarkin_CopyPicture( dec_thread_t *p_dec, picture_t *p_pic,
334 uint8_t *p_src, int i_pitch )
336 int i_plane, i_line, i_src_stride, i_dst_stride;
339 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
341 p_dst = p_pic->p[i_plane].p_pixels;
342 i_dst_stride = p_pic->p[i_plane].i_pitch;
343 i_src_stride = i_pitch;
345 for( i_line = 0; i_line < p_pic->p[i_plane].i_lines; i_line++ )
347 p_dec->p_fifo->p_vlc->pf_memcpy( p_dst, p_src,
350 p_src += i_src_stride;
351 p_dst += i_dst_stride;