1 /*****************************************************************************
2 * video_parser.c : video parser thread
3 *****************************************************************************
4 * Copyright (C) 1999, 2000 VideoLAN
5 * $Id: video_parser.c,v 1.76 2001/02/20 15:03:00 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>
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"
68 static int InitThread ( vpar_thread_t *p_vpar );
69 static void RunThread ( vpar_thread_t *p_vpar );
70 static void ErrorThread ( vpar_thread_t *p_vpar );
71 static void EndThread ( vpar_thread_t *p_vpar );
72 static void BitstreamCallback ( bit_stream_t *p_bit_stream,
73 boolean_t b_new_pes );
75 /*****************************************************************************
76 * vpar_CreateThread: create a generic parser thread
77 *****************************************************************************
78 * This function creates a new video parser thread, and returns a pointer
79 * to its description. On error, it returns NULL.
80 *****************************************************************************/
81 vlc_thread_t vpar_CreateThread( vdec_config_t * p_config )
83 vpar_thread_t * p_vpar;
85 intf_DbgMsg( "vpar debug: creating video parser thread" );
87 /* Allocate the memory needed to store the thread's structure */
88 if ( (p_vpar = (vpar_thread_t *)malloc( sizeof(vpar_thread_t) )) == NULL )
90 intf_ErrMsg( "vpar error: not enough memory "
91 "for vpar_CreateThread() to create the new thread");
96 * Initialize the thread properties
98 p_vpar->p_fifo = p_config->decoder_config.p_decoder_fifo;
99 p_vpar->p_config = p_config;
101 p_vpar->p_vout = p_config->p_vout;
104 * Choose the best motion compensation module
106 p_vpar->p_motion_module = module_Need( p_main->p_bank,
107 MODULE_CAPABILITY_MOTION, NULL );
109 if( p_vpar->p_motion_module == NULL )
111 intf_ErrMsg( "vpar error: no suitable motion compensation module" );
116 #define m ( p_vpar->pppf_motion )
117 #define s ( p_vpar->ppf_motion_skipped )
118 #define f ( p_vpar->p_motion_module->p_functions->motion.functions.motion )
119 m[0][0][0] = m[0][0][1] = m[0][0][2] = m[0][0][3] = NULL;
120 m[0][1][0] = m[0][1][1] = m[0][1][2] = m[0][1][3] = NULL;
128 m[1][0][1] = f.pf_field_field_420;
129 m[1][1][1] = f.pf_frame_field_420;
130 m[2][0][1] = f.pf_field_field_422;
131 m[2][1][1] = f.pf_frame_field_422;
132 m[3][0][1] = f.pf_field_field_444;
133 m[3][1][1] = f.pf_frame_field_444;
135 m[1][0][2] = f.pf_field_16x8_420;
136 m[1][1][2] = f.pf_frame_frame_420;
137 m[2][0][2] = f.pf_field_16x8_422;
138 m[2][1][2] = f.pf_frame_frame_422;
139 m[3][0][2] = f.pf_field_16x8_444;
140 m[3][1][2] = f.pf_frame_frame_444;
142 m[1][0][3] = f.pf_field_dmv_420;
143 m[1][1][3] = f.pf_frame_dmv_420;
144 m[2][0][3] = f.pf_field_dmv_422;
145 m[2][1][3] = f.pf_frame_dmv_422;
146 m[3][0][3] = f.pf_field_dmv_444;
147 m[3][1][3] = f.pf_frame_dmv_444;
149 s[0][0] = s[0][1] = s[0][2] = s[0][3] = NULL;
154 s[1][1] = f.pf_field_field_420;
155 s[2][1] = f.pf_field_field_422;
156 s[3][1] = f.pf_field_field_444;
158 s[1][2] = f.pf_field_field_420;
159 s[2][2] = f.pf_field_field_422;
160 s[3][2] = f.pf_field_field_444;
162 s[1][3] = f.pf_frame_frame_420;
163 s[2][3] = f.pf_frame_frame_422;
164 s[3][3] = f.pf_frame_frame_444;
170 * Choose the best IDCT module
172 p_vpar->p_idct_module = module_Need( p_main->p_bank,
173 MODULE_CAPABILITY_IDCT, NULL );
175 if( p_vpar->p_idct_module == NULL )
177 intf_ErrMsg( "vpar error: no suitable IDCT module" );
178 module_Unneed( p_main->p_bank, p_vpar->p_motion_module );
183 #define f p_vpar->p_idct_module->p_functions->idct.functions.idct
184 p_vpar->pf_init = f.pf_init;
185 p_vpar->pf_sparse_idct = f.pf_sparse_idct;
186 p_vpar->pf_idct = f.pf_idct;
187 p_vpar->pf_norm_scan = f.pf_norm_scan;
190 /* Spawn the video parser thread */
191 if ( vlc_thread_create( &p_vpar->thread_id, "video parser",
192 (vlc_thread_func_t)RunThread, (void *)p_vpar ) )
194 intf_ErrMsg("vpar error: can't spawn video parser thread");
195 module_Unneed( p_main->p_bank, p_vpar->p_idct_module );
196 module_Unneed( p_main->p_bank, p_vpar->p_motion_module );
201 intf_DbgMsg("vpar debug: video parser thread (%p) created", p_vpar);
202 return( p_vpar->thread_id );
205 /* following functions are local */
207 /*****************************************************************************
208 * InitThread: initialize vpar output thread
209 *****************************************************************************
210 * This function is called from RunThread and performs the second step of the
211 * initialization. It returns 0 on success. Note that the thread's flag are not
212 * modified inside this function.
213 *****************************************************************************/
214 static int InitThread( vpar_thread_t *p_vpar )
220 intf_DbgMsg("vpar debug: initializing video parser thread %p", p_vpar);
222 p_vpar->p_config->decoder_config.pf_init_bit_stream( &p_vpar->bit_stream,
223 p_vpar->p_config->decoder_config.p_decoder_fifo );
224 p_vpar->bit_stream.pf_bitstream_callback = BitstreamCallback;
225 p_vpar->bit_stream.p_callback_arg = (void *)p_vpar;
227 /* InitBitstream has normally begun to read a PES packet, get its
229 if( !p_vpar->p_fifo->b_die )
231 BitstreamCallback( &p_vpar->bit_stream, 1 );
234 /* Initialize parsing data */
235 p_vpar->sequence.p_forward = NULL;
236 p_vpar->sequence.p_backward = NULL;
237 p_vpar->sequence.intra_quant.b_allocated = 0;
238 p_vpar->sequence.nonintra_quant.b_allocated = 0;
239 p_vpar->sequence.chroma_intra_quant.b_allocated = 0;
240 p_vpar->sequence.chroma_nonintra_quant.b_allocated = 0;
241 p_vpar->sequence.i_matrix_coefficients = 1;
242 p_vpar->sequence.next_pts = p_vpar->sequence.next_dts = 0;
243 p_vpar->sequence.b_expect_discontinuity = 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;
292 /* Re-nice ourself */
293 if( nice(VDEC_NICE) == -1 )
295 intf_WarnMsg( 2, "vpar warning : couldn't nice() (%s)",
302 /* Initialize lookup tables */
303 vpar_InitMbAddrInc( p_vpar );
304 vpar_InitDCTTables( p_vpar );
305 vpar_InitPMBType( p_vpar );
306 vpar_InitBMBType( p_vpar );
307 vpar_InitDCTTables( p_vpar );
308 vpar_InitScanTable( p_vpar );
311 * Initialize the synchro properties
313 vpar_SynchroInit( p_vpar );
315 /* Mark thread as running and return */
316 intf_DbgMsg("vpar debug: InitThread(%p) succeeded", p_vpar);
320 /*****************************************************************************
321 * RunThread: generic parser thread
322 *****************************************************************************
323 * Video parser thread. This function only returns when the thread is
325 *****************************************************************************/
326 static void RunThread( vpar_thread_t *p_vpar )
328 intf_DbgMsg("vpar debug: running video parser thread (%p) (pid == %i)", p_vpar, getpid());
333 p_vpar->p_fifo->b_error = InitThread( p_vpar );
336 * Main loop - it is not executed if an error occured during
339 while( (!p_vpar->p_fifo->b_die) && (!p_vpar->p_fifo->b_error) )
341 /* Find the next sequence header in the stream */
342 p_vpar->p_fifo->b_error = vpar_NextSequenceHeader( p_vpar );
344 while( (!p_vpar->p_fifo->b_die) && (!p_vpar->p_fifo->b_error) )
349 /* Parse the next sequence, group or picture header */
350 if( vpar_ParseHeader( p_vpar ) )
352 /* End of sequence */
361 if( p_vpar->p_fifo->b_error )
363 ErrorThread( p_vpar );
370 /*****************************************************************************
371 * ErrorThread: RunThread() error loop
372 *****************************************************************************
373 * This function is called when an error occured during thread main's loop. The
374 * thread can still receive feed, but must be ready to terminate as soon as
376 *****************************************************************************/
377 static void ErrorThread( vpar_thread_t *p_vpar )
379 /* We take the lock, because we are going to read/write the start/end
380 * indexes of the decoder fifo */
381 vlc_mutex_lock( &p_vpar->p_fifo->data_lock );
383 /* Wait until a `die' order is sent */
384 while( !p_vpar->p_fifo->b_die )
386 /* Trash all received PES packets */
387 while( !DECODER_FIFO_ISEMPTY(*p_vpar->p_fifo) )
389 p_vpar->p_fifo->pf_delete_pes( p_vpar->p_fifo->p_packets_mgt,
390 DECODER_FIFO_START(*p_vpar->p_fifo) );
391 DECODER_FIFO_INCSTART( *p_vpar->p_fifo );
394 /* Waiting for the input thread to put new PES packets in the fifo */
395 vlc_cond_wait( &p_vpar->p_fifo->data_wait, &p_vpar->p_fifo->data_lock );
398 /* We can release the lock before leaving */
399 vlc_mutex_unlock( &p_vpar->p_fifo->data_lock );
402 /*****************************************************************************
403 * EndThread: thread destruction
404 *****************************************************************************
405 * This function is called when the thread ends after a sucessful
407 *****************************************************************************/
408 static void EndThread( vpar_thread_t *p_vpar )
414 intf_DbgMsg("vpar debug: destroying video parser thread %p", p_vpar);
416 /* Release used video buffers. */
417 if( p_vpar->sequence.p_forward != NULL )
419 vout_UnlinkPicture( p_vpar->p_vout, p_vpar->sequence.p_forward );
421 if( p_vpar->sequence.p_backward != NULL )
423 vout_DatePicture( p_vpar->p_vout, p_vpar->sequence.p_backward,
424 vpar_SynchroDate( p_vpar ) );
425 vout_UnlinkPicture( p_vpar->p_vout, p_vpar->sequence.p_backward );
429 intf_Msg("vpar stats: %d loops among %d sequence(s)",
430 p_vpar->c_loops, p_vpar->c_sequences);
433 struct tms cpu_usage;
436 intf_Msg("vpar stats: cpu usage (user: %d, system: %d)",
437 cpu_usage.tms_utime, cpu_usage.tms_stime);
440 intf_Msg("vpar stats: Read %d frames/fields (I %d/P %d/B %d)",
441 p_vpar->pc_pictures[I_CODING_TYPE]
442 + p_vpar->pc_pictures[P_CODING_TYPE]
443 + p_vpar->pc_pictures[B_CODING_TYPE],
444 p_vpar->pc_pictures[I_CODING_TYPE],
445 p_vpar->pc_pictures[P_CODING_TYPE],
446 p_vpar->pc_pictures[B_CODING_TYPE]);
447 intf_Msg("vpar stats: Decoded %d frames/fields (I %d/P %d/B %d)",
448 p_vpar->pc_decoded_pictures[I_CODING_TYPE]
449 + p_vpar->pc_decoded_pictures[P_CODING_TYPE]
450 + p_vpar->pc_decoded_pictures[B_CODING_TYPE],
451 p_vpar->pc_decoded_pictures[I_CODING_TYPE],
452 p_vpar->pc_decoded_pictures[P_CODING_TYPE],
453 p_vpar->pc_decoded_pictures[B_CODING_TYPE]);
454 intf_Msg("vpar stats: Read %d malformed frames/fields (I %d/P %d/B %d)",
455 p_vpar->pc_malformed_pictures[I_CODING_TYPE]
456 + p_vpar->pc_malformed_pictures[P_CODING_TYPE]
457 + p_vpar->pc_malformed_pictures[B_CODING_TYPE],
458 p_vpar->pc_malformed_pictures[I_CODING_TYPE],
459 p_vpar->pc_malformed_pictures[P_CODING_TYPE],
460 p_vpar->pc_malformed_pictures[B_CODING_TYPE]);
461 #define S p_vpar->sequence
462 intf_Msg("vpar info: %s stream (%dx%d), %d.%d pi/s",
463 S.b_mpeg2 ? "MPEG-2" : "MPEG-1",
464 S.i_width, S.i_height, S.i_frame_rate/1001, S.i_frame_rate % 1001);
465 intf_Msg("vpar info: %s, %s, matrix_coeff: %d",
466 S.b_progressive ? "Progressive" : "Non-progressive",
467 S.i_scalable_mode ? "scalable" : "non-scalable",
468 S.i_matrix_coefficients);
471 /* Dispose of matrices if they have been allocated. */
472 if( p_vpar->sequence.intra_quant.b_allocated )
474 free( p_vpar->sequence.intra_quant.pi_matrix );
476 if( p_vpar->sequence.nonintra_quant.b_allocated )
478 free( p_vpar->sequence.nonintra_quant.pi_matrix) ;
480 if( p_vpar->sequence.chroma_intra_quant.b_allocated )
482 free( p_vpar->sequence.chroma_intra_quant.pi_matrix );
484 if( p_vpar->sequence.chroma_nonintra_quant.b_allocated )
486 free( p_vpar->sequence.chroma_nonintra_quant.pi_matrix );
490 /* Destroy vdec threads */
491 for( i_dummy = 0; i_dummy < NB_VDEC; i_dummy++ )
493 if( p_vpar->pp_vdec[i_dummy] != NULL )
494 vdec_DestroyThread( p_vpar->pp_vdec[i_dummy] );
499 free( p_vpar->pp_vdec[0] );
502 free( p_vpar->p_config );
505 /* Destroy lock and cond */
506 vlc_mutex_destroy( &(p_vpar->vbuffer.lock) );
507 vlc_cond_destroy( &(p_vpar->vfifo.wait) );
508 vlc_mutex_destroy( &(p_vpar->vfifo.lock) );
511 vlc_mutex_destroy( &(p_vpar->synchro.fifo_lock) );
513 module_Unneed( p_main->p_bank, p_vpar->p_idct_module );
514 module_Unneed( p_main->p_bank, p_vpar->p_motion_module );
518 intf_DbgMsg("vpar debug: EndThread(%p)", p_vpar);
521 /*****************************************************************************
522 * BitstreamCallback: Import parameters from the new data/PES packet
523 *****************************************************************************
524 * This function is called by input's NextDataPacket.
525 *****************************************************************************/
526 static void BitstreamCallback ( bit_stream_t * p_bit_stream,
527 boolean_t b_new_pes )
529 vpar_thread_t * p_vpar = (vpar_thread_t *)p_bit_stream->p_callback_arg;
533 p_vpar->sequence.next_pts =
534 DECODER_FIFO_START( *p_bit_stream->p_decoder_fifo )->i_pts;
535 p_vpar->sequence.next_dts =
536 DECODER_FIFO_START( *p_bit_stream->p_decoder_fifo )->i_dts;
537 p_vpar->sequence.i_current_rate =
538 DECODER_FIFO_START( *p_bit_stream->p_decoder_fifo )->i_rate;
540 if( DECODER_FIFO_START( *p_bit_stream->p_decoder_fifo )->b_discontinuity )
542 /* Escape the current picture and reset the picture predictors. */
543 p_vpar->sequence.b_expect_discontinuity = 1;
544 p_vpar->picture.b_error = 1;
548 if( p_bit_stream->p_data->b_discard_payload )
550 /* 1 packet messed up, trash the slice. */
551 p_vpar->picture.b_error = 1;