1 /*****************************************************************************
2 * video_parser.c : video parser thread
3 *****************************************************************************
4 * Copyright (C) 1999, 2000 VideoLAN
5 * $Id: video_parser.c,v 1.82 2001/05/01 04:18:18 sam 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>
47 #include "stream_control.h"
48 #include "input_ext-dec.h"
51 #include "video_output.h"
53 #include "video_decoder.h"
54 #include "vdec_motion.h"
55 #include "../video_decoder/vdec_idct.h"
57 #include "vpar_blocks.h"
58 #include "../video_decoder/vpar_headers.h"
59 #include "../video_decoder/vpar_synchro.h"
60 #include "../video_decoder/video_parser.h"
61 #include "../video_decoder/video_fifo.h"
66 static int InitThread ( vpar_thread_t * );
67 static void RunThread ( vpar_thread_t * );
68 static void ErrorThread ( vpar_thread_t * );
69 static void EndThread ( vpar_thread_t * );
70 static void BitstreamCallback ( bit_stream_t *, boolean_t );
72 /*****************************************************************************
73 * vpar_CreateThread: create a generic parser thread
74 *****************************************************************************
75 * This function creates a new video parser thread, and returns a pointer
76 * to its description. On error, it returns NULL.
77 *****************************************************************************/
78 vlc_thread_t vpar_CreateThread( vdec_config_t * p_config )
80 vpar_thread_t * p_vpar;
82 intf_DbgMsg( "vpar debug: creating video parser thread" );
84 /* Allocate the memory needed to store the thread's structure */
85 if ( (p_vpar = (vpar_thread_t *)malloc( sizeof(vpar_thread_t) )) == NULL )
87 intf_ErrMsg( "vpar error: not enough memory "
88 "for vpar_CreateThread() to create the new thread");
93 * Initialize the thread properties
95 p_vpar->p_fifo = p_config->decoder_config.p_decoder_fifo;
96 p_vpar->p_config = p_config;
98 p_vpar->p_vout = p_config->p_vout;
101 * Choose the best motion compensation module
103 p_vpar->p_motion_module = module_Need( MODULE_CAPABILITY_MOTION, NULL );
105 if( p_vpar->p_motion_module == NULL )
107 intf_ErrMsg( "vpar error: no suitable motion compensation module" );
112 #define M ( p_vpar->pppf_motion )
113 #define S ( p_vpar->ppf_motion_skipped )
114 #define F ( p_vpar->p_motion_module->p_functions->motion.functions.motion )
115 M[0][0][0] = M[0][0][1] = M[0][0][2] = M[0][0][3] = NULL;
116 M[0][1][0] = M[0][1][1] = M[0][1][2] = M[0][1][3] = NULL;
124 M[1][0][1] = F.pf_field_field_420;
125 M[1][1][1] = F.pf_frame_field_420;
126 M[2][0][1] = F.pf_field_field_422;
127 M[2][1][1] = F.pf_frame_field_422;
128 M[3][0][1] = F.pf_field_field_444;
129 M[3][1][1] = F.pf_frame_field_444;
131 M[1][0][2] = F.pf_field_16x8_420;
132 M[1][1][2] = F.pf_frame_frame_420;
133 M[2][0][2] = F.pf_field_16x8_422;
134 M[2][1][2] = F.pf_frame_frame_422;
135 M[3][0][2] = F.pf_field_16x8_444;
136 M[3][1][2] = F.pf_frame_frame_444;
138 M[1][0][3] = F.pf_field_dmv_420;
139 M[1][1][3] = F.pf_frame_dmv_420;
140 M[2][0][3] = F.pf_field_dmv_422;
141 M[2][1][3] = F.pf_frame_dmv_422;
142 M[3][0][3] = F.pf_field_dmv_444;
143 M[3][1][3] = F.pf_frame_dmv_444;
145 S[0][0] = S[0][1] = S[0][2] = S[0][3] = NULL;
150 S[1][1] = F.pf_field_field_420;
151 S[2][1] = F.pf_field_field_422;
152 S[3][1] = F.pf_field_field_444;
154 S[1][2] = F.pf_field_field_420;
155 S[2][2] = F.pf_field_field_422;
156 S[3][2] = F.pf_field_field_444;
158 S[1][3] = F.pf_frame_frame_420;
159 S[2][3] = F.pf_frame_frame_422;
160 S[3][3] = F.pf_frame_frame_444;
166 * Choose the best IDCT module
168 p_vpar->p_idct_module = module_Need( MODULE_CAPABILITY_IDCT, NULL );
170 if( p_vpar->p_idct_module == NULL )
172 intf_ErrMsg( "vpar error: no suitable IDCT module" );
173 module_Unneed( p_vpar->p_motion_module );
178 #define f p_vpar->p_idct_module->p_functions->idct.functions.idct
179 p_vpar->pf_init = f.pf_init;
180 p_vpar->pf_sparse_idct = f.pf_sparse_idct;
181 p_vpar->pf_idct = f.pf_idct;
182 p_vpar->pf_norm_scan = f.pf_norm_scan;
185 /* Spawn the video parser thread */
186 if ( vlc_thread_create( &p_vpar->thread_id, "video parser",
187 (vlc_thread_func_t)RunThread, (void *)p_vpar ) )
189 intf_ErrMsg("vpar error: can't spawn video parser thread");
190 module_Unneed( p_vpar->p_idct_module );
191 module_Unneed( p_vpar->p_motion_module );
196 intf_DbgMsg("vpar debug: video parser thread (%p) created", p_vpar);
197 return( p_vpar->thread_id );
200 /* following functions are local */
202 /*****************************************************************************
203 * InitThread: initialize vpar output thread
204 *****************************************************************************
205 * This function is called from RunThread and performs the second step of the
206 * initialization. It returns 0 on success. Note that the thread's flag are not
207 * modified inside this function.
208 *****************************************************************************/
209 static int InitThread( vpar_thread_t *p_vpar )
215 intf_DbgMsg("vpar debug: initializing video parser thread %p", p_vpar);
217 p_vpar->p_config->decoder_config.pf_init_bit_stream( &p_vpar->bit_stream,
218 p_vpar->p_config->decoder_config.p_decoder_fifo, BitstreamCallback,
221 /* Initialize parsing data */
222 p_vpar->sequence.p_forward = NULL;
223 p_vpar->sequence.p_backward = NULL;
224 p_vpar->sequence.intra_quant.b_allocated = 0;
225 p_vpar->sequence.nonintra_quant.b_allocated = 0;
226 p_vpar->sequence.chroma_intra_quant.b_allocated = 0;
227 p_vpar->sequence.chroma_nonintra_quant.b_allocated = 0;
228 p_vpar->sequence.i_matrix_coefficients = 1;
229 p_vpar->sequence.next_pts = p_vpar->sequence.next_dts = 0;
230 p_vpar->sequence.b_expect_discontinuity = 0;
232 /* Initialize copyright information */
233 p_vpar->sequence.b_copyright_flag = 0;
234 p_vpar->sequence.b_original = 0;
235 p_vpar->sequence.i_copyright_id = 0;
236 p_vpar->sequence.i_copyright_nb = 0;
238 p_vpar->picture.p_picture = NULL;
239 p_vpar->picture.i_current_structure = 0;
241 /* Initialize other properties */
244 p_vpar->c_sequences = 0;
245 memset(p_vpar->pc_pictures, 0, sizeof(p_vpar->pc_pictures));
246 memset(p_vpar->pc_decoded_pictures, 0, sizeof(p_vpar->pc_decoded_pictures));
247 memset(p_vpar->pc_malformed_pictures, 0,
248 sizeof(p_vpar->pc_malformed_pictures));
251 /* Initialize video FIFO */
252 vpar_InitFIFO( p_vpar );
254 memset( p_vpar->pp_vdec, 0, NB_VDEC*sizeof(vdec_thread_t *) );
257 /* Spawn video_decoder threads */
258 /* FIXME: modify the number of vdecs at runtime ?? */
259 for( i_dummy = 0; i_dummy < NB_VDEC; i_dummy++ )
261 if( (p_vpar->pp_vdec[i_dummy] = vdec_CreateThread( p_vpar )) == NULL )
267 /* Fake a video_decoder thread */
268 if( (p_vpar->pp_vdec[0] = (vdec_thread_t *)malloc(sizeof( vdec_thread_t )))
269 == NULL || vdec_InitThread( p_vpar->pp_vdec[0] ) )
273 p_vpar->pp_vdec[0]->b_die = 0;
274 p_vpar->pp_vdec[0]->b_error = 0;
275 p_vpar->pp_vdec[0]->p_vpar = p_vpar;
277 # if !defined(SYS_BEOS) && !defined(WIN32)
279 /* Re-nice ourself */
280 if( nice(VDEC_NICE) == -1 )
282 intf_WarnMsg( 2, "vpar warning : couldn't nice() (%s)",
289 /* Initialize lookup tables */
290 vpar_InitMbAddrInc( p_vpar );
291 vpar_InitDCTTables( p_vpar );
292 vpar_InitPMBType( p_vpar );
293 vpar_InitBMBType( p_vpar );
294 vpar_InitDCTTables( p_vpar );
295 vpar_InitScanTable( p_vpar );
298 * Initialize the synchro properties
300 vpar_SynchroInit( p_vpar );
302 /* Mark thread as running and return */
303 intf_DbgMsg("vpar debug: InitThread(%p) succeeded", p_vpar);
307 /*****************************************************************************
308 * RunThread: generic parser thread
309 *****************************************************************************
310 * Video parser thread. This function only returns when the thread is
312 *****************************************************************************/
313 static void RunThread( vpar_thread_t *p_vpar )
315 intf_DbgMsg("vpar debug: running video parser thread (%p) (pid == %i)", p_vpar, getpid());
320 p_vpar->p_fifo->b_error = InitThread( p_vpar );
323 * Main loop - it is not executed if an error occured during
326 while( (!p_vpar->p_fifo->b_die) && (!p_vpar->p_fifo->b_error) )
328 /* Find the next sequence header in the stream */
329 p_vpar->p_fifo->b_error = vpar_NextSequenceHeader( p_vpar );
331 while( (!p_vpar->p_fifo->b_die) && (!p_vpar->p_fifo->b_error) )
336 /* Parse the next sequence, group or picture header */
337 if( vpar_ParseHeader( p_vpar ) )
339 /* End of sequence */
348 if( p_vpar->p_fifo->b_error )
350 ErrorThread( p_vpar );
357 /*****************************************************************************
358 * ErrorThread: RunThread() error loop
359 *****************************************************************************
360 * This function is called when an error occured during thread main's loop. The
361 * thread can still receive feed, but must be ready to terminate as soon as
363 *****************************************************************************/
364 static void ErrorThread( vpar_thread_t *p_vpar )
366 /* We take the lock, because we are going to read/write the start/end
367 * indexes of the decoder fifo */
368 vlc_mutex_lock( &p_vpar->p_fifo->data_lock );
370 /* Wait until a `die' order is sent */
371 while( !p_vpar->p_fifo->b_die )
373 /* Trash all received PES packets */
374 while( !DECODER_FIFO_ISEMPTY(*p_vpar->p_fifo) )
376 p_vpar->p_fifo->pf_delete_pes( p_vpar->p_fifo->p_packets_mgt,
377 DECODER_FIFO_START(*p_vpar->p_fifo) );
378 DECODER_FIFO_INCSTART( *p_vpar->p_fifo );
381 /* Waiting for the input thread to put new PES packets in the fifo */
382 vlc_cond_wait( &p_vpar->p_fifo->data_wait, &p_vpar->p_fifo->data_lock );
385 /* We can release the lock before leaving */
386 vlc_mutex_unlock( &p_vpar->p_fifo->data_lock );
389 /*****************************************************************************
390 * EndThread: thread destruction
391 *****************************************************************************
392 * This function is called when the thread ends after a sucessful
394 *****************************************************************************/
395 static void EndThread( vpar_thread_t *p_vpar )
401 intf_DbgMsg("vpar debug: destroying video parser thread %p", p_vpar);
403 /* Release used video buffers. */
404 if( p_vpar->sequence.p_forward != NULL )
406 vout_UnlinkPicture( p_vpar->p_vout, p_vpar->sequence.p_forward );
408 if( p_vpar->sequence.p_backward != NULL )
410 vout_DatePicture( p_vpar->p_vout, p_vpar->sequence.p_backward,
411 vpar_SynchroDate( p_vpar ) );
412 vout_UnlinkPicture( p_vpar->p_vout, p_vpar->sequence.p_backward );
414 if( p_vpar->picture.p_picture != NULL )
416 vout_DestroyPicture( p_vpar->p_vout, p_vpar->picture.p_picture );
420 intf_Msg("vpar stats: %d loops among %d sequence(s)",
421 p_vpar->c_loops, p_vpar->c_sequences);
424 struct tms cpu_usage;
427 intf_Msg("vpar stats: cpu usage (user: %d, system: %d)",
428 cpu_usage.tms_utime, cpu_usage.tms_stime);
431 intf_Msg("vpar stats: Read %d frames/fields (I %d/P %d/B %d)",
432 p_vpar->pc_pictures[I_CODING_TYPE]
433 + p_vpar->pc_pictures[P_CODING_TYPE]
434 + p_vpar->pc_pictures[B_CODING_TYPE],
435 p_vpar->pc_pictures[I_CODING_TYPE],
436 p_vpar->pc_pictures[P_CODING_TYPE],
437 p_vpar->pc_pictures[B_CODING_TYPE]);
438 intf_Msg("vpar stats: Decoded %d frames/fields (I %d/P %d/B %d)",
439 p_vpar->pc_decoded_pictures[I_CODING_TYPE]
440 + p_vpar->pc_decoded_pictures[P_CODING_TYPE]
441 + p_vpar->pc_decoded_pictures[B_CODING_TYPE],
442 p_vpar->pc_decoded_pictures[I_CODING_TYPE],
443 p_vpar->pc_decoded_pictures[P_CODING_TYPE],
444 p_vpar->pc_decoded_pictures[B_CODING_TYPE]);
445 intf_Msg("vpar stats: Read %d malformed frames/fields (I %d/P %d/B %d)",
446 p_vpar->pc_malformed_pictures[I_CODING_TYPE]
447 + p_vpar->pc_malformed_pictures[P_CODING_TYPE]
448 + p_vpar->pc_malformed_pictures[B_CODING_TYPE],
449 p_vpar->pc_malformed_pictures[I_CODING_TYPE],
450 p_vpar->pc_malformed_pictures[P_CODING_TYPE],
451 p_vpar->pc_malformed_pictures[B_CODING_TYPE]);
452 #define S p_vpar->sequence
453 intf_Msg("vpar info: %s stream (%dx%d), %d.%d pi/s",
454 S.b_mpeg2 ? "MPEG-2" : "MPEG-1",
455 S.i_width, S.i_height, S.i_frame_rate/1001, S.i_frame_rate % 1001);
456 intf_Msg("vpar info: %s, %s, matrix_coeff: %d",
457 S.b_progressive ? "Progressive" : "Non-progressive",
458 S.i_scalable_mode ? "scalable" : "non-scalable",
459 S.i_matrix_coefficients);
462 /* Dispose of matrices if they have been allocated. */
463 if( p_vpar->sequence.intra_quant.b_allocated )
465 free( p_vpar->sequence.intra_quant.pi_matrix );
467 if( p_vpar->sequence.nonintra_quant.b_allocated )
469 free( p_vpar->sequence.nonintra_quant.pi_matrix) ;
471 if( p_vpar->sequence.chroma_intra_quant.b_allocated )
473 free( p_vpar->sequence.chroma_intra_quant.pi_matrix );
475 if( p_vpar->sequence.chroma_nonintra_quant.b_allocated )
477 free( p_vpar->sequence.chroma_nonintra_quant.pi_matrix );
481 /* Destroy vdec threads */
482 for( i_dummy = 0; i_dummy < NB_VDEC; i_dummy++ )
484 if( p_vpar->pp_vdec[i_dummy] != NULL )
485 vdec_DestroyThread( p_vpar->pp_vdec[i_dummy] );
490 free( p_vpar->pp_vdec[0] );
493 free( p_vpar->p_config );
496 /* Destroy lock and cond */
497 vlc_mutex_destroy( &(p_vpar->vbuffer.lock) );
498 vlc_cond_destroy( &(p_vpar->vfifo.wait) );
499 vlc_mutex_destroy( &(p_vpar->vfifo.lock) );
502 vlc_mutex_destroy( &(p_vpar->synchro.fifo_lock) );
504 module_Unneed( p_vpar->p_idct_module );
505 module_Unneed( p_vpar->p_motion_module );
509 intf_DbgMsg("vpar debug: EndThread(%p)", p_vpar);
512 /*****************************************************************************
513 * BitstreamCallback: Import parameters from the new data/PES packet
514 *****************************************************************************
515 * This function is called by input's NextDataPacket.
516 *****************************************************************************/
517 static void BitstreamCallback ( bit_stream_t * p_bit_stream,
518 boolean_t b_new_pes )
520 vpar_thread_t * p_vpar = (vpar_thread_t *)p_bit_stream->p_callback_arg;
524 p_vpar->sequence.next_pts =
525 DECODER_FIFO_START( *p_bit_stream->p_decoder_fifo )->i_pts;
526 p_vpar->sequence.next_dts =
527 DECODER_FIFO_START( *p_bit_stream->p_decoder_fifo )->i_dts;
528 p_vpar->sequence.i_current_rate =
529 DECODER_FIFO_START( *p_bit_stream->p_decoder_fifo )->i_rate;
531 if( DECODER_FIFO_START( *p_bit_stream->p_decoder_fifo )->b_discontinuity )
534 intf_DbgMsg( "Discontinuity in BitstreamCallback" );
536 /* Escape the current picture and reset the picture predictors. */
537 p_vpar->sequence.b_expect_discontinuity = 1;
538 p_vpar->picture.b_error = 1;
542 if( p_bit_stream->p_data->b_discard_payload )
545 intf_DbgMsg( "Discard payload in BitstreamCallback" );
547 /* 1 packet messed up, trash the slice. */
548 p_vpar->picture.b_error = 1;