1 /*****************************************************************************
2 * video_parser.c : video parser thread
3 *****************************************************************************
4 * Copyright (C) 1999, 2000 VideoLAN
5 * $Id: video_parser.c,v 1.86 2001/05/30 17:03:13 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"
56 #include "vpar_blocks.h"
57 #include "vpar_headers.h"
58 #include "vpar_synchro.h"
59 #include "video_parser.h"
60 #include "video_fifo.h"
65 static int InitThread ( vpar_thread_t * );
66 static void RunThread ( vpar_thread_t * );
67 static void ErrorThread ( vpar_thread_t * );
68 static void EndThread ( vpar_thread_t * );
69 static void BitstreamCallback ( bit_stream_t *, boolean_t );
71 /*****************************************************************************
72 * vpar_CreateThread: create a generic parser thread
73 *****************************************************************************
74 * This function creates a new video parser thread, and returns a pointer
75 * to its description. On error, it returns NULL.
76 *****************************************************************************/
77 vlc_thread_t vpar_CreateThread( vdec_config_t * p_config )
79 vpar_thread_t * p_vpar;
81 intf_DbgMsg( "vpar debug: creating video parser thread" );
83 /* Allocate the memory needed to store the thread's structure */
84 if ( (p_vpar = (vpar_thread_t *)malloc( sizeof(vpar_thread_t) )) == NULL )
86 intf_ErrMsg( "vpar error: not enough memory "
87 "for vpar_CreateThread() to create the new thread");
92 * Initialize the thread properties
94 p_vpar->p_fifo = p_config->decoder_config.p_decoder_fifo;
95 p_vpar->p_config = p_config;
96 p_vpar->p_vout = NULL;
99 * Choose the best motion compensation module
101 p_vpar->p_motion_module = module_Need( MODULE_CAPABILITY_MOTION, NULL );
103 if( p_vpar->p_motion_module == NULL )
105 intf_ErrMsg( "vpar error: no suitable motion compensation module" );
110 #define M ( p_vpar->pppf_motion )
111 #define S ( p_vpar->ppf_motion_skipped )
112 #define F ( p_vpar->p_motion_module->p_functions->motion.functions.motion )
113 M[0][0][0] = M[0][0][1] = M[0][0][2] = M[0][0][3] = NULL;
114 M[0][1][0] = M[0][1][1] = M[0][1][2] = M[0][1][3] = NULL;
122 M[1][0][1] = F.pf_field_field_420;
123 M[1][1][1] = F.pf_frame_field_420;
124 M[2][0][1] = F.pf_field_field_422;
125 M[2][1][1] = F.pf_frame_field_422;
126 M[3][0][1] = F.pf_field_field_444;
127 M[3][1][1] = F.pf_frame_field_444;
129 M[1][0][2] = F.pf_field_16x8_420;
130 M[1][1][2] = F.pf_frame_frame_420;
131 M[2][0][2] = F.pf_field_16x8_422;
132 M[2][1][2] = F.pf_frame_frame_422;
133 M[3][0][2] = F.pf_field_16x8_444;
134 M[3][1][2] = F.pf_frame_frame_444;
136 M[1][0][3] = F.pf_field_dmv_420;
137 M[1][1][3] = F.pf_frame_dmv_420;
138 M[2][0][3] = F.pf_field_dmv_422;
139 M[2][1][3] = F.pf_frame_dmv_422;
140 M[3][0][3] = F.pf_field_dmv_444;
141 M[3][1][3] = F.pf_frame_dmv_444;
143 S[0][0] = S[0][1] = S[0][2] = S[0][3] = NULL;
148 S[1][1] = F.pf_field_field_420;
149 S[2][1] = F.pf_field_field_422;
150 S[3][1] = F.pf_field_field_444;
152 S[1][2] = F.pf_field_field_420;
153 S[2][2] = F.pf_field_field_422;
154 S[3][2] = F.pf_field_field_444;
156 S[1][3] = F.pf_frame_frame_420;
157 S[2][3] = F.pf_frame_frame_422;
158 S[3][3] = F.pf_frame_frame_444;
164 * Choose the best IDCT module
166 p_vpar->p_idct_module = module_Need( MODULE_CAPABILITY_IDCT, NULL );
168 if( p_vpar->p_idct_module == NULL )
170 intf_ErrMsg( "vpar error: no suitable IDCT module" );
171 module_Unneed( p_vpar->p_motion_module );
176 #define f p_vpar->p_idct_module->p_functions->idct.functions.idct
177 p_vpar->pf_idct_init = f.pf_idct_init;
178 p_vpar->pf_sparse_idct = f.pf_sparse_idct;
179 p_vpar->pf_idct = f.pf_idct;
180 p_vpar->pf_norm_scan = f.pf_norm_scan;
181 p_vpar->pf_decode_init = f.pf_decode_init;
182 p_vpar->pf_decode_mb_c = f.pf_decode_mb_c;
183 p_vpar->pf_decode_mb_bw = f.pf_decode_mb_bw;
186 /* Spawn the video parser thread */
187 if ( vlc_thread_create( &p_vpar->thread_id, "video parser",
188 (vlc_thread_func_t)RunThread, (void *)p_vpar ) )
190 intf_ErrMsg("vpar error: can't spawn video parser thread");
191 module_Unneed( p_vpar->p_idct_module );
192 module_Unneed( p_vpar->p_motion_module );
197 intf_DbgMsg("vpar debug: video parser thread (%p) created", p_vpar);
198 return( p_vpar->thread_id );
201 /* following functions are local */
203 /*****************************************************************************
204 * InitThread: initialize vpar output thread
205 *****************************************************************************
206 * This function is called from RunThread and performs the second step of the
207 * initialization. It returns 0 on success. Note that the thread's flag are not
208 * modified inside this function.
209 *****************************************************************************/
210 static int InitThread( vpar_thread_t *p_vpar )
216 intf_DbgMsg("vpar debug: initializing video parser thread %p", p_vpar);
218 p_vpar->p_config->decoder_config.pf_init_bit_stream( &p_vpar->bit_stream,
219 p_vpar->p_config->decoder_config.p_decoder_fifo, BitstreamCallback,
222 /* Initialize parsing data */
223 p_vpar->sequence.p_forward = NULL;
224 p_vpar->sequence.p_backward = NULL;
225 p_vpar->sequence.intra_quant.b_allocated = 0;
226 p_vpar->sequence.nonintra_quant.b_allocated = 0;
227 p_vpar->sequence.chroma_intra_quant.b_allocated = 0;
228 p_vpar->sequence.chroma_nonintra_quant.b_allocated = 0;
229 p_vpar->sequence.i_matrix_coefficients = 1;
230 p_vpar->sequence.next_pts = p_vpar->sequence.next_dts = 0;
231 p_vpar->sequence.b_expect_discontinuity = 0;
233 /* Initialize copyright information */
234 p_vpar->sequence.b_copyright_flag = 0;
235 p_vpar->sequence.b_original = 0;
236 p_vpar->sequence.i_copyright_id = 0;
237 p_vpar->sequence.i_copyright_nb = 0;
239 p_vpar->picture.p_picture = NULL;
240 p_vpar->picture.i_current_structure = 0;
242 /* Initialize other properties */
245 p_vpar->c_sequences = 0;
246 memset(p_vpar->pc_pictures, 0, sizeof(p_vpar->pc_pictures));
247 memset(p_vpar->pc_decoded_pictures, 0, sizeof(p_vpar->pc_decoded_pictures));
248 memset(p_vpar->pc_malformed_pictures, 0,
249 sizeof(p_vpar->pc_malformed_pictures));
252 /* Initialize video FIFO */
253 vpar_InitFIFO( p_vpar );
255 memset( p_vpar->pp_vdec, 0, NB_VDEC*sizeof(vdec_thread_t *) );
258 /* Spawn video_decoder threads */
259 /* FIXME: modify the number of vdecs at runtime ?? */
260 for( i_dummy = 0; i_dummy < NB_VDEC; i_dummy++ )
262 if( (p_vpar->pp_vdec[i_dummy] = vdec_CreateThread( p_vpar )) == NULL )
268 /* Fake a video_decoder thread */
269 p_vpar->pp_vdec[0] = (vdec_thread_t *)malloc(sizeof( vdec_thread_t ));
271 if( p_vpar->pp_vdec[0] == NULL )
276 p_vpar->pp_vdec[0]->b_die = 0;
277 p_vpar->pp_vdec[0]->b_error = 0;
278 p_vpar->pp_vdec[0]->p_vpar = p_vpar;
280 if( vdec_InitThread( p_vpar->pp_vdec[0] ) )
285 # if !defined(SYS_BEOS) && !defined(WIN32)
287 /* Re-nice ourself */
288 if( nice(VDEC_NICE) == -1 )
290 intf_WarnMsg( 2, "vpar warning : couldn't nice() (%s)",
297 /* Initialize lookup tables */
298 vpar_InitMbAddrInc( p_vpar );
299 vpar_InitDCTTables( p_vpar );
300 vpar_InitPMBType( p_vpar );
301 vpar_InitBMBType( p_vpar );
302 vpar_InitDCTTables( p_vpar );
303 vpar_InitScanTable( p_vpar );
306 * Initialize the synchro properties
308 vpar_SynchroInit( p_vpar );
310 /* Mark thread as running and return */
311 intf_DbgMsg("vpar debug: InitThread(%p) succeeded", p_vpar);
315 /*****************************************************************************
316 * RunThread: generic parser thread
317 *****************************************************************************
318 * Video parser thread. This function only returns when the thread is
320 *****************************************************************************/
321 static void RunThread( vpar_thread_t *p_vpar )
323 intf_DbgMsg("vpar debug: running video parser thread (%p) (pid == %i)", p_vpar, getpid());
328 p_vpar->p_fifo->b_error = InitThread( p_vpar );
331 * Main loop - it is not executed if an error occured during
334 while( (!p_vpar->p_fifo->b_die) && (!p_vpar->p_fifo->b_error) )
336 /* Find the next sequence header in the stream */
337 p_vpar->p_fifo->b_error = vpar_NextSequenceHeader( p_vpar );
339 while( (!p_vpar->p_fifo->b_die) && (!p_vpar->p_fifo->b_error) )
344 /* Parse the next sequence, group or picture header */
345 if( vpar_ParseHeader( p_vpar ) )
347 /* End of sequence */
356 if( p_vpar->p_fifo->b_error )
358 ErrorThread( p_vpar );
365 /*****************************************************************************
366 * ErrorThread: RunThread() error loop
367 *****************************************************************************
368 * This function is called when an error occured during thread main's loop. The
369 * thread can still receive feed, but must be ready to terminate as soon as
371 *****************************************************************************/
372 static void ErrorThread( vpar_thread_t *p_vpar )
374 /* We take the lock, because we are going to read/write the start/end
375 * indexes of the decoder fifo */
376 vlc_mutex_lock( &p_vpar->p_fifo->data_lock );
378 /* Wait until a `die' order is sent */
379 while( !p_vpar->p_fifo->b_die )
381 /* Trash all received PES packets */
382 while( !DECODER_FIFO_ISEMPTY(*p_vpar->p_fifo) )
384 p_vpar->p_fifo->pf_delete_pes( p_vpar->p_fifo->p_packets_mgt,
385 DECODER_FIFO_START(*p_vpar->p_fifo) );
386 DECODER_FIFO_INCSTART( *p_vpar->p_fifo );
389 /* Waiting for the input thread to put new PES packets in the fifo */
390 vlc_cond_wait( &p_vpar->p_fifo->data_wait, &p_vpar->p_fifo->data_lock );
393 /* We can release the lock before leaving */
394 vlc_mutex_unlock( &p_vpar->p_fifo->data_lock );
397 /*****************************************************************************
398 * EndThread: thread destruction
399 *****************************************************************************
400 * This function is called when the thread ends after a sucessful
402 *****************************************************************************/
403 static void EndThread( vpar_thread_t *p_vpar )
409 intf_DbgMsg("vpar debug: destroying video parser thread %p", p_vpar);
411 /* Release used video buffers. */
412 if( p_vpar->sequence.p_forward != NULL )
414 vout_UnlinkPicture( p_vpar->p_vout, p_vpar->sequence.p_forward );
416 if( p_vpar->sequence.p_backward != NULL )
418 vout_DatePicture( p_vpar->p_vout, p_vpar->sequence.p_backward,
419 vpar_SynchroDate( p_vpar ) );
420 vout_UnlinkPicture( p_vpar->p_vout, p_vpar->sequence.p_backward );
422 if( p_vpar->picture.p_picture != NULL )
424 vout_DestroyPicture( p_vpar->p_vout, p_vpar->picture.p_picture );
428 intf_Msg("vpar stats: %d loops among %d sequence(s)",
429 p_vpar->c_loops, p_vpar->c_sequences);
432 struct tms cpu_usage;
435 intf_Msg("vpar stats: cpu usage (user: %d, system: %d)",
436 cpu_usage.tms_utime, cpu_usage.tms_stime);
439 intf_Msg("vpar stats: Read %d frames/fields (I %d/P %d/B %d)",
440 p_vpar->pc_pictures[I_CODING_TYPE]
441 + p_vpar->pc_pictures[P_CODING_TYPE]
442 + p_vpar->pc_pictures[B_CODING_TYPE],
443 p_vpar->pc_pictures[I_CODING_TYPE],
444 p_vpar->pc_pictures[P_CODING_TYPE],
445 p_vpar->pc_pictures[B_CODING_TYPE]);
446 intf_Msg("vpar stats: Decoded %d frames/fields (I %d/P %d/B %d)",
447 p_vpar->pc_decoded_pictures[I_CODING_TYPE]
448 + p_vpar->pc_decoded_pictures[P_CODING_TYPE]
449 + p_vpar->pc_decoded_pictures[B_CODING_TYPE],
450 p_vpar->pc_decoded_pictures[I_CODING_TYPE],
451 p_vpar->pc_decoded_pictures[P_CODING_TYPE],
452 p_vpar->pc_decoded_pictures[B_CODING_TYPE]);
453 intf_Msg("vpar stats: Read %d malformed frames/fields (I %d/P %d/B %d)",
454 p_vpar->pc_malformed_pictures[I_CODING_TYPE]
455 + p_vpar->pc_malformed_pictures[P_CODING_TYPE]
456 + p_vpar->pc_malformed_pictures[B_CODING_TYPE],
457 p_vpar->pc_malformed_pictures[I_CODING_TYPE],
458 p_vpar->pc_malformed_pictures[P_CODING_TYPE],
459 p_vpar->pc_malformed_pictures[B_CODING_TYPE]);
460 #define S p_vpar->sequence
461 intf_Msg("vpar info: %s stream (%dx%d), %d.%d pi/s",
462 S.b_mpeg2 ? "MPEG-2" : "MPEG-1",
463 S.i_width, S.i_height, S.i_frame_rate/1001, S.i_frame_rate % 1001);
464 intf_Msg("vpar info: %s, %s, matrix_coeff: %d",
465 S.b_progressive ? "Progressive" : "Non-progressive",
466 S.i_scalable_mode ? "scalable" : "non-scalable",
467 S.i_matrix_coefficients);
470 /* Dispose of matrices if they have been allocated. */
471 if( p_vpar->sequence.intra_quant.b_allocated )
473 free( p_vpar->sequence.intra_quant.pi_matrix );
475 if( p_vpar->sequence.nonintra_quant.b_allocated )
477 free( p_vpar->sequence.nonintra_quant.pi_matrix) ;
479 if( p_vpar->sequence.chroma_intra_quant.b_allocated )
481 free( p_vpar->sequence.chroma_intra_quant.pi_matrix );
483 if( p_vpar->sequence.chroma_nonintra_quant.b_allocated )
485 free( p_vpar->sequence.chroma_nonintra_quant.pi_matrix );
489 /* Destroy vdec threads */
490 for( i_dummy = 0; i_dummy < NB_VDEC; i_dummy++ )
492 if( p_vpar->pp_vdec[i_dummy] != NULL )
493 vdec_DestroyThread( p_vpar->pp_vdec[i_dummy] );
498 free( p_vpar->pp_vdec[0] );
501 free( p_vpar->p_config );
504 /* Destroy lock and cond */
505 vlc_mutex_destroy( &(p_vpar->vbuffer.lock) );
506 vlc_cond_destroy( &(p_vpar->vfifo.wait) );
507 vlc_mutex_destroy( &(p_vpar->vfifo.lock) );
510 vlc_mutex_destroy( &(p_vpar->synchro.fifo_lock) );
512 module_Unneed( p_vpar->p_idct_module );
513 module_Unneed( p_vpar->p_motion_module );
517 intf_DbgMsg("vpar debug: EndThread(%p)", p_vpar);
520 /*****************************************************************************
521 * BitstreamCallback: Import parameters from the new data/PES packet
522 *****************************************************************************
523 * This function is called by input's NextDataPacket.
524 *****************************************************************************/
525 static void BitstreamCallback ( bit_stream_t * p_bit_stream,
526 boolean_t b_new_pes )
528 vpar_thread_t * p_vpar = (vpar_thread_t *)p_bit_stream->p_callback_arg;
532 p_vpar->sequence.next_pts =
533 DECODER_FIFO_START( *p_bit_stream->p_decoder_fifo )->i_pts;
534 p_vpar->sequence.next_dts =
535 DECODER_FIFO_START( *p_bit_stream->p_decoder_fifo )->i_dts;
536 p_vpar->sequence.i_current_rate =
537 DECODER_FIFO_START( *p_bit_stream->p_decoder_fifo )->i_rate;
539 if( DECODER_FIFO_START( *p_bit_stream->p_decoder_fifo )->b_discontinuity )
542 intf_DbgMsg( "Discontinuity in BitstreamCallback" );
544 /* Escape the current picture and reset the picture predictors. */
545 p_vpar->sequence.b_expect_discontinuity = 1;
546 p_vpar->picture.b_error = 1;
550 if( p_bit_stream->p_data->b_discard_payload )
553 intf_DbgMsg( "Discard payload in BitstreamCallback" );
555 /* 1 packet messed up, trash the slice. */
556 p_vpar->picture.b_error = 1;