1 /*****************************************************************************
2 * video_parser.c : video parser thread
3 *****************************************************************************
4 * Copyright (C) 1999, 2000 VideoLAN
5 * $Id: video_parser.c,v 1.72 2001/02/08 17:44:13 massiot Exp $
7 * Authors: Christophe Massiot <massiot@via.ecp.fr>
8 * Samuel Hocevar <sam@via.ecp.fr>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
30 #include <stdlib.h> /* malloc(), free() */
31 #include <unistd.h> /* getpid() */
36 # include <sys/times.h>
48 #include "stream_control.h"
49 #include "input_ext-dec.h"
52 #include "video_output.h"
54 #include "video_decoder.h"
55 #include "vdec_motion.h"
56 #include "../video_decoder/vdec_idct.h"
58 #include "vpar_blocks.h"
59 #include "../video_decoder/vpar_headers.h"
60 #include "../video_decoder/vpar_synchro.h"
61 #include "../video_decoder/video_parser.h"
62 #include "../video_decoder/video_fifo.h"
69 static int InitThread ( vpar_thread_t *p_vpar );
70 static void RunThread ( vpar_thread_t *p_vpar );
71 static void ErrorThread ( vpar_thread_t *p_vpar );
72 static void EndThread ( vpar_thread_t *p_vpar );
73 static void BitstreamCallback ( bit_stream_t *p_bit_stream,
74 boolean_t b_new_pes );
76 /*****************************************************************************
77 * vpar_CreateThread: create a generic parser thread
78 *****************************************************************************
79 * This function creates a new video parser thread, and returns a pointer
80 * to its description. On error, it returns NULL.
81 *****************************************************************************/
82 vlc_thread_t vpar_CreateThread( vdec_config_t * p_config )
84 vpar_thread_t * p_vpar;
86 intf_DbgMsg( "vpar debug: creating video parser thread" );
88 /* Allocate the memory needed to store the thread's structure */
89 if ( (p_vpar = (vpar_thread_t *)malloc( sizeof(vpar_thread_t) )) == NULL )
91 intf_ErrMsg( "vpar error: not enough memory "
92 "for vpar_CreateThread() to create the new thread");
97 * Initialize the thread properties
99 p_vpar->p_fifo = p_config->decoder_config.p_decoder_fifo;
100 p_vpar->p_config = p_config;
102 p_vpar->p_vout = p_config->p_vout;
105 * Choose the best motion compensation module
107 p_vpar->p_motion_module = module_Need( p_main->p_module_bank,
108 MODULE_CAPABILITY_MOTION, NULL );
110 if( p_vpar->p_motion_module == NULL )
112 intf_ErrMsg( "vpar error: no suitable motion compensation module" );
117 #define m ( p_vpar->pppf_motion )
118 #define s ( p_vpar->ppf_motion_skipped )
119 #define f ( p_vpar->p_motion_module->p_functions->motion.functions.motion )
120 m[0][0][0] = m[0][0][1] = m[0][0][2] = m[0][0][3] = NULL;
121 m[0][1][0] = m[0][1][1] = m[0][1][2] = m[0][1][3] = NULL;
129 m[1][0][1] = f.pf_field_field_420;
130 m[1][1][1] = f.pf_frame_field_420;
131 m[2][0][1] = f.pf_field_field_422;
132 m[2][1][1] = f.pf_frame_field_422;
133 m[3][0][1] = f.pf_field_field_444;
134 m[3][1][1] = f.pf_frame_field_444;
136 m[1][0][2] = f.pf_field_16x8_420;
137 m[1][1][2] = f.pf_frame_frame_420;
138 m[2][0][2] = f.pf_field_16x8_422;
139 m[2][1][2] = f.pf_frame_frame_422;
140 m[3][0][2] = f.pf_field_16x8_444;
141 m[3][1][2] = f.pf_frame_frame_444;
143 m[1][0][3] = f.pf_field_dmv_420;
144 m[1][1][3] = f.pf_frame_dmv_420;
145 m[2][0][3] = f.pf_field_dmv_422;
146 m[2][1][3] = f.pf_frame_dmv_422;
147 m[3][0][3] = f.pf_field_dmv_444;
148 m[3][1][3] = f.pf_frame_dmv_444;
150 s[0][0] = s[0][1] = s[0][2] = s[0][3] = NULL;
155 s[1][1] = f.pf_field_field_420;
156 s[2][1] = f.pf_field_field_422;
157 s[3][1] = f.pf_field_field_444;
159 s[1][2] = f.pf_field_field_420;
160 s[2][2] = f.pf_field_field_422;
161 s[3][2] = f.pf_field_field_444;
163 s[1][3] = f.pf_frame_frame_420;
164 s[2][3] = f.pf_frame_frame_422;
165 s[3][3] = f.pf_frame_frame_444;
171 * Choose the best IDCT module
173 p_vpar->p_idct_module = module_Need( p_main->p_module_bank,
174 MODULE_CAPABILITY_IDCT, NULL );
176 if( p_vpar->p_idct_module == NULL )
178 intf_ErrMsg( "vpar error: no suitable IDCT module" );
179 module_Unneed( p_main->p_module_bank, p_vpar->p_motion_module );
184 #define f p_vpar->p_idct_module->p_functions->idct.functions.idct
185 p_vpar->pf_init = f.pf_init;
186 p_vpar->pf_sparse_idct = f.pf_sparse_idct;
187 p_vpar->pf_idct = f.pf_idct;
188 p_vpar->pf_norm_scan = f.pf_norm_scan;
191 /* Spawn the video parser thread */
192 if ( vlc_thread_create( &p_vpar->thread_id, "video parser",
193 (vlc_thread_func_t)RunThread, (void *)p_vpar ) )
195 intf_ErrMsg("vpar error: can't spawn video parser thread");
196 module_Unneed( p_main->p_module_bank, p_vpar->p_idct_module );
197 module_Unneed( p_main->p_module_bank, p_vpar->p_motion_module );
202 intf_DbgMsg("vpar debug: video parser thread (%p) created", p_vpar);
203 return( p_vpar->thread_id );
206 /* following functions are local */
208 /*****************************************************************************
209 * InitThread: initialize vpar output thread
210 *****************************************************************************
211 * This function is called from RunThread and performs the second step of the
212 * initialization. It returns 0 on success. Note that the thread's flag are not
213 * modified inside this function.
214 *****************************************************************************/
215 static int InitThread( vpar_thread_t *p_vpar )
221 intf_DbgMsg("vpar debug: initializing video parser thread %p", p_vpar);
223 p_vpar->p_config->decoder_config.pf_init_bit_stream( &p_vpar->bit_stream,
224 p_vpar->p_config->decoder_config.p_decoder_fifo );
225 p_vpar->bit_stream.pf_bitstream_callback = BitstreamCallback;
226 p_vpar->bit_stream.p_callback_arg = (void *)p_vpar;
228 /* InitBitstream has normally begun to read a PES packet, get its
230 if( !p_vpar->p_fifo->b_die )
232 BitstreamCallback( &p_vpar->bit_stream, 1 );
235 /* Initialize parsing data */
236 p_vpar->sequence.p_forward = NULL;
237 p_vpar->sequence.p_backward = NULL;
238 p_vpar->sequence.intra_quant.b_allocated = 0;
239 p_vpar->sequence.nonintra_quant.b_allocated = 0;
240 p_vpar->sequence.chroma_intra_quant.b_allocated = 0;
241 p_vpar->sequence.chroma_nonintra_quant.b_allocated = 0;
242 p_vpar->sequence.i_matrix_coefficients = 1;
243 p_vpar->sequence.next_pts = p_vpar->sequence.next_dts = 0;
245 /* Initialize copyright information */
246 p_vpar->sequence.b_copyright_flag = 0;
247 p_vpar->sequence.b_original = 0;
248 p_vpar->sequence.i_copyright_id = 0;
249 p_vpar->sequence.i_copyright_nb = 0;
251 p_vpar->picture.p_picture = NULL;
252 p_vpar->picture.i_current_structure = 0;
254 /* Initialize other properties */
257 p_vpar->c_sequences = 0;
258 memset(p_vpar->pc_pictures, 0, sizeof(p_vpar->pc_pictures));
259 memset(p_vpar->pc_decoded_pictures, 0, sizeof(p_vpar->pc_decoded_pictures));
260 memset(p_vpar->pc_malformed_pictures, 0,
261 sizeof(p_vpar->pc_malformed_pictures));
264 /* Initialize video FIFO */
265 vpar_InitFIFO( p_vpar );
267 memset( p_vpar->pp_vdec, 0, NB_VDEC*sizeof(vdec_thread_t *) );
270 /* Spawn video_decoder threads */
271 /* FIXME: modify the number of vdecs at runtime ?? */
272 for( i_dummy = 0; i_dummy < NB_VDEC; i_dummy++ )
274 if( (p_vpar->pp_vdec[i_dummy] = vdec_CreateThread( p_vpar )) == NULL )
280 /* Fake a video_decoder thread */
281 if( (p_vpar->pp_vdec[0] = (vdec_thread_t *)malloc(sizeof( vdec_thread_t )))
282 == NULL || vdec_InitThread( p_vpar->pp_vdec[0] ) )
286 p_vpar->pp_vdec[0]->b_die = 0;
287 p_vpar->pp_vdec[0]->b_error = 0;
288 p_vpar->pp_vdec[0]->p_vpar = p_vpar;
291 /* Re-nice ourself */
292 if( nice(VDEC_NICE) == -1 )
294 intf_WarnMsg( 2, "vpar warning : couldn't nice() (%s)",
300 /* Initialize lookup tables */
301 #if defined(MPEG2_COMPLIANT) && !defined(VDEC_DFT)
302 vpar_InitCrop( p_vpar );
304 vpar_InitMbAddrInc( p_vpar );
305 vpar_InitDCTTables( p_vpar );
306 vpar_InitPMBType( p_vpar );
307 vpar_InitBMBType( p_vpar );
308 vpar_InitDCTTables( p_vpar );
309 vpar_InitScanTable( p_vpar );
312 * Initialize the synchro properties
314 vpar_SynchroInit( p_vpar );
316 /* Mark thread as running and return */
317 intf_DbgMsg("vpar debug: InitThread(%p) succeeded", p_vpar);
321 /*****************************************************************************
322 * RunThread: generic parser thread
323 *****************************************************************************
324 * Video parser thread. This function only returns when the thread is
326 *****************************************************************************/
327 static void RunThread( vpar_thread_t *p_vpar )
329 intf_DbgMsg("vpar debug: running video parser thread (%p) (pid == %i)", p_vpar, getpid());
334 p_vpar->p_fifo->b_error = InitThread( p_vpar );
337 * Main loop - it is not executed if an error occured during
340 while( (!p_vpar->p_fifo->b_die) && (!p_vpar->p_fifo->b_error) )
342 /* Find the next sequence header in the stream */
343 p_vpar->p_fifo->b_error = vpar_NextSequenceHeader( p_vpar );
345 while( (!p_vpar->p_fifo->b_die) && (!p_vpar->p_fifo->b_error) )
350 /* Parse the next sequence, group or picture header */
351 if( vpar_ParseHeader( p_vpar ) )
353 /* End of sequence */
362 if( p_vpar->p_fifo->b_error )
364 ErrorThread( p_vpar );
371 /*****************************************************************************
372 * ErrorThread: RunThread() error loop
373 *****************************************************************************
374 * This function is called when an error occured during thread main's loop. The
375 * thread can still receive feed, but must be ready to terminate as soon as
377 *****************************************************************************/
378 static void ErrorThread( vpar_thread_t *p_vpar )
380 /* We take the lock, because we are going to read/write the start/end
381 * indexes of the decoder fifo */
382 vlc_mutex_lock( &p_vpar->p_fifo->data_lock );
384 /* Wait until a `die' order is sent */
385 while( !p_vpar->p_fifo->b_die )
387 /* Trash all received PES packets */
388 while( !DECODER_FIFO_ISEMPTY(*p_vpar->p_fifo) )
390 p_vpar->p_fifo->pf_delete_pes( p_vpar->p_fifo->p_packets_mgt,
391 DECODER_FIFO_START(*p_vpar->p_fifo) );
392 DECODER_FIFO_INCSTART( *p_vpar->p_fifo );
395 /* Waiting for the input thread to put new PES packets in the fifo */
396 vlc_cond_wait( &p_vpar->p_fifo->data_wait, &p_vpar->p_fifo->data_lock );
399 /* We can release the lock before leaving */
400 vlc_mutex_unlock( &p_vpar->p_fifo->data_lock );
403 /*****************************************************************************
404 * EndThread: thread destruction
405 *****************************************************************************
406 * This function is called when the thread ends after a sucessful
408 *****************************************************************************/
409 static void EndThread( vpar_thread_t *p_vpar )
415 intf_DbgMsg("vpar debug: destroying video parser thread %p", p_vpar);
417 /* Release used video buffers. */
418 if( p_vpar->sequence.p_forward != NULL )
420 vout_UnlinkPicture( p_vpar->p_vout, p_vpar->sequence.p_forward );
422 if( p_vpar->sequence.p_backward != NULL )
424 vout_DatePicture( p_vpar->p_vout, p_vpar->sequence.p_backward,
425 vpar_SynchroDate( p_vpar ) );
426 vout_UnlinkPicture( p_vpar->p_vout, p_vpar->sequence.p_backward );
430 intf_Msg("vpar stats: %d loops among %d sequence(s)",
431 p_vpar->c_loops, p_vpar->c_sequences);
434 struct tms cpu_usage;
437 intf_Msg("vpar stats: cpu usage (user: %d, system: %d)",
438 cpu_usage.tms_utime, cpu_usage.tms_stime);
441 intf_Msg("vpar stats: Read %d frames/fields (I %d/P %d/B %d)",
442 p_vpar->pc_pictures[I_CODING_TYPE]
443 + p_vpar->pc_pictures[P_CODING_TYPE]
444 + p_vpar->pc_pictures[B_CODING_TYPE],
445 p_vpar->pc_pictures[I_CODING_TYPE],
446 p_vpar->pc_pictures[P_CODING_TYPE],
447 p_vpar->pc_pictures[B_CODING_TYPE]);
448 intf_Msg("vpar stats: Decoded %d frames/fields (I %d/P %d/B %d)",
449 p_vpar->pc_decoded_pictures[I_CODING_TYPE]
450 + p_vpar->pc_decoded_pictures[P_CODING_TYPE]
451 + p_vpar->pc_decoded_pictures[B_CODING_TYPE],
452 p_vpar->pc_decoded_pictures[I_CODING_TYPE],
453 p_vpar->pc_decoded_pictures[P_CODING_TYPE],
454 p_vpar->pc_decoded_pictures[B_CODING_TYPE]);
455 intf_Msg("vpar stats: Read %d malformed frames/fields (I %d/P %d/B %d)",
456 p_vpar->pc_malformed_pictures[I_CODING_TYPE]
457 + p_vpar->pc_malformed_pictures[P_CODING_TYPE]
458 + p_vpar->pc_malformed_pictures[B_CODING_TYPE],
459 p_vpar->pc_malformed_pictures[I_CODING_TYPE],
460 p_vpar->pc_malformed_pictures[P_CODING_TYPE],
461 p_vpar->pc_malformed_pictures[B_CODING_TYPE]);
462 #define S p_vpar->sequence
463 intf_Msg("vpar info: %s stream (%dx%d), %d.%d pi/s",
464 S.b_mpeg2 ? "MPEG-2" : "MPEG-1",
465 S.i_width, S.i_height, S.i_frame_rate/1001, S.i_frame_rate % 1001);
466 intf_Msg("vpar info: %s, %s, matrix_coeff: %d",
467 S.b_progressive ? "Progressive" : "Non-progressive",
468 S.i_scalable_mode ? "scalable" : "non-scalable",
469 S.i_matrix_coefficients);
472 /* Dispose of matrices if they have been allocated. */
473 if( p_vpar->sequence.intra_quant.b_allocated )
475 free( p_vpar->sequence.intra_quant.pi_matrix );
477 if( p_vpar->sequence.nonintra_quant.b_allocated )
479 free( p_vpar->sequence.nonintra_quant.pi_matrix) ;
481 if( p_vpar->sequence.chroma_intra_quant.b_allocated )
483 free( p_vpar->sequence.chroma_intra_quant.pi_matrix );
485 if( p_vpar->sequence.chroma_nonintra_quant.b_allocated )
487 free( p_vpar->sequence.chroma_nonintra_quant.pi_matrix );
491 /* Destroy vdec threads */
492 for( i_dummy = 0; i_dummy < NB_VDEC; i_dummy++ )
494 if( p_vpar->pp_vdec[i_dummy] != NULL )
495 vdec_DestroyThread( p_vpar->pp_vdec[i_dummy] );
500 free( p_vpar->pp_vdec[0] );
503 free( p_vpar->p_config );
506 /* Destroy lock and cond */
507 vlc_mutex_destroy( &(p_vpar->vbuffer.lock) );
508 vlc_cond_destroy( &(p_vpar->vfifo.wait) );
509 vlc_mutex_destroy( &(p_vpar->vfifo.lock) );
512 vlc_mutex_destroy( &(p_vpar->synchro.fifo_lock) );
514 module_Unneed( p_main->p_module_bank, p_vpar->p_idct_module );
515 module_Unneed( p_main->p_module_bank, p_vpar->p_motion_module );
519 intf_DbgMsg("vpar debug: EndThread(%p)", p_vpar);
522 /*****************************************************************************
523 * BitstreamCallback: Import parameters from the new data/PES packet
524 *****************************************************************************
525 * This function is called by input's NextDataPacket.
526 *****************************************************************************/
527 static void BitstreamCallback ( bit_stream_t * p_bit_stream,
528 boolean_t b_new_pes )
530 vpar_thread_t * p_vpar = (vpar_thread_t *)p_bit_stream->p_callback_arg;
534 p_vpar->sequence.next_pts =
535 DECODER_FIFO_START( *p_bit_stream->p_decoder_fifo )->i_pts;
536 p_vpar->sequence.next_dts =
537 DECODER_FIFO_START( *p_bit_stream->p_decoder_fifo )->i_dts;
538 p_vpar->sequence.i_current_rate =
539 DECODER_FIFO_START( *p_bit_stream->p_decoder_fifo )->i_rate;
541 if( DECODER_FIFO_START( *p_bit_stream->p_decoder_fifo )->b_discontinuity )
543 /* Escape the current picture and reset the picture predictors. */
544 p_vpar->picture.b_error = 1;
545 if( p_vpar->sequence.p_forward != NULL )
547 vout_UnlinkPicture( p_vpar->p_vout, p_vpar->sequence.p_forward );
549 if( p_vpar->sequence.p_backward != NULL )
551 vout_DatePicture( p_vpar->p_vout, p_vpar->sequence.p_backward,
552 vpar_SynchroDate( p_vpar ) );
553 vout_UnlinkPicture( p_vpar->p_vout, p_vpar->sequence.p_backward );
555 p_vpar->sequence.p_forward = p_vpar->sequence.p_backward = NULL;
559 if( p_bit_stream->p_data->b_discard_payload )
561 /* 1 packet messed up, trash the slice. */
562 p_vpar->picture.b_error = 1;