1 /*****************************************************************************
2 * video_parser.c : video parser thread
3 *****************************************************************************
4 * Copyright (C) 1999, 2000 VideoLAN
5 * $Id: video_parser.c,v 1.68 2001/01/17 18:17:31 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 "../video_decoder/vdec_motion.h"
56 #include "../video_decoder/vdec_idct.h"
58 #include "../video_decoder/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;
104 /* Choose the best IDCT module */
105 p_vpar->p_module = module_Need( p_main->p_module_bank,
106 MODULE_CAPABILITY_IDCT, NULL );
108 if( p_vpar->p_module == NULL )
110 intf_ErrMsg( "vpar error: no suitable IDCT module" );
115 #define idct_functions p_vpar->p_module->p_functions->idct.functions.idct
116 p_vpar->pf_init = idct_functions.pf_init;
117 p_vpar->pf_sparse_idct = idct_functions.pf_sparse_idct;
118 p_vpar->pf_idct = idct_functions.pf_idct;
119 p_vpar->pf_norm_scan = idct_functions.pf_norm_scan;
120 #undef idct_functions
122 /* Spawn the video parser thread */
123 if ( vlc_thread_create( &p_vpar->thread_id, "video parser",
124 (vlc_thread_func_t)RunThread, (void *)p_vpar ) )
126 intf_ErrMsg("vpar error: can't spawn video parser thread");
127 module_Unneed( p_main->p_module_bank, p_vpar->p_module );
132 intf_DbgMsg("vpar debug: video parser thread (%p) created", p_vpar);
133 return( p_vpar->thread_id );
136 /* following functions are local */
138 /*****************************************************************************
139 * InitThread: initialize vpar output thread
140 *****************************************************************************
141 * This function is called from RunThread and performs the second step of the
142 * initialization. It returns 0 on success. Note that the thread's flag are not
143 * modified inside this function.
144 *****************************************************************************/
145 static int InitThread( vpar_thread_t *p_vpar )
151 intf_DbgMsg("vpar debug: initializing video parser thread %p", p_vpar);
153 p_vpar->p_config->decoder_config.pf_init_bit_stream( &p_vpar->bit_stream,
154 p_vpar->p_config->decoder_config.p_decoder_fifo );
155 p_vpar->bit_stream.pf_bitstream_callback = BitstreamCallback;
156 p_vpar->bit_stream.p_callback_arg = (void *)p_vpar;
158 /* Initialize parsing data */
159 p_vpar->sequence.p_forward = NULL;
160 p_vpar->sequence.p_backward = NULL;
161 p_vpar->sequence.intra_quant.b_allocated = 0;
162 p_vpar->sequence.nonintra_quant.b_allocated = 0;
163 p_vpar->sequence.chroma_intra_quant.b_allocated = 0;
164 p_vpar->sequence.chroma_nonintra_quant.b_allocated = 0;
165 p_vpar->sequence.i_matrix_coefficients = 1;
166 p_vpar->sequence.next_pts = p_vpar->sequence.next_dts = 0;
168 /* Initialize copyright information */
169 p_vpar->sequence.b_copyright_flag = 0;
170 p_vpar->sequence.b_original = 0;
171 p_vpar->sequence.i_copyright_id = 0;
172 p_vpar->sequence.i_copyright_nb = 0;
174 p_vpar->picture.p_picture = NULL;
175 p_vpar->picture.i_current_structure = 0;
177 /* Initialize other properties */
180 p_vpar->c_sequences = 0;
181 memset(p_vpar->pc_pictures, 0, sizeof(p_vpar->pc_pictures));
182 memset(p_vpar->pc_decoded_pictures, 0, sizeof(p_vpar->pc_decoded_pictures));
183 memset(p_vpar->pc_malformed_pictures, 0,
184 sizeof(p_vpar->pc_malformed_pictures));
187 /* Initialize video FIFO */
188 vpar_InitFIFO( p_vpar );
190 memset( p_vpar->pp_vdec, 0, NB_VDEC*sizeof(vdec_thread_t *) );
193 /* Spawn video_decoder threads */
194 /* FIXME: modify the number of vdecs at runtime ?? */
195 for( i_dummy = 0; i_dummy < NB_VDEC; i_dummy++ )
197 if( (p_vpar->pp_vdec[i_dummy] = vdec_CreateThread( p_vpar )) == NULL )
203 /* Fake a video_decoder thread */
204 if( (p_vpar->pp_vdec[0] = (vdec_thread_t *)malloc(sizeof( vdec_thread_t )))
205 == NULL || vdec_InitThread( p_vpar->pp_vdec[0] ) )
209 p_vpar->pp_vdec[0]->b_die = 0;
210 p_vpar->pp_vdec[0]->b_error = 0;
211 p_vpar->pp_vdec[0]->p_vpar = p_vpar;
214 /* Re-nice ourself */
215 if( nice(VDEC_NICE) == -1 )
217 intf_WarnMsg( 2, "vpar warning : couldn't nice() (%s)",
223 /* Initialize lookup tables */
224 #if defined(MPEG2_COMPLIANT) && !defined(VDEC_DFT)
225 vpar_InitCrop( p_vpar );
227 vpar_InitMbAddrInc( p_vpar );
228 vpar_InitDCTTables( p_vpar );
229 vpar_InitPMBType( p_vpar );
230 vpar_InitBMBType( p_vpar );
231 vpar_InitDCTTables( p_vpar );
232 vpar_InitScanTable( p_vpar );
235 * Initialize the synchro properties
237 vpar_SynchroInit( p_vpar );
239 /* Mark thread as running and return */
240 intf_DbgMsg("vpar debug: InitThread(%p) succeeded", p_vpar);
244 /*****************************************************************************
245 * RunThread: generic parser thread
246 *****************************************************************************
247 * Video parser thread. This function only returns when the thread is
249 *****************************************************************************/
250 static void RunThread( vpar_thread_t *p_vpar )
252 intf_DbgMsg("vpar debug: running video parser thread (%p) (pid == %i)", p_vpar, getpid());
257 p_vpar->p_fifo->b_error = InitThread( p_vpar );
260 * Main loop - it is not executed if an error occured during
263 while( (!p_vpar->p_fifo->b_die) && (!p_vpar->p_fifo->b_error) )
265 /* Find the next sequence header in the stream */
266 p_vpar->p_fifo->b_error = vpar_NextSequenceHeader( p_vpar );
268 while( (!p_vpar->p_fifo->b_die) && (!p_vpar->p_fifo->b_error) )
273 /* Parse the next sequence, group or picture header */
274 if( vpar_ParseHeader( p_vpar ) )
276 /* End of sequence */
285 if( p_vpar->p_fifo->b_error )
287 ErrorThread( p_vpar );
294 /*****************************************************************************
295 * ErrorThread: RunThread() error loop
296 *****************************************************************************
297 * This function is called when an error occured during thread main's loop. The
298 * thread can still receive feed, but must be ready to terminate as soon as
300 *****************************************************************************/
301 static void ErrorThread( vpar_thread_t *p_vpar )
303 /* We take the lock, because we are going to read/write the start/end
304 * indexes of the decoder fifo */
305 vlc_mutex_lock( &p_vpar->p_fifo->data_lock );
307 /* Wait until a `die' order is sent */
308 while( !p_vpar->p_fifo->b_die )
310 /* Trash all received PES packets */
311 while( !DECODER_FIFO_ISEMPTY(*p_vpar->p_fifo) )
313 p_vpar->p_fifo->pf_delete_pes( p_vpar->p_fifo->p_packets_mgt,
314 DECODER_FIFO_START(*p_vpar->p_fifo) );
315 DECODER_FIFO_INCSTART( *p_vpar->p_fifo );
318 /* Waiting for the input thread to put new PES packets in the fifo */
319 vlc_cond_wait( &p_vpar->p_fifo->data_wait, &p_vpar->p_fifo->data_lock );
322 /* We can release the lock before leaving */
323 vlc_mutex_unlock( &p_vpar->p_fifo->data_lock );
326 /*****************************************************************************
327 * EndThread: thread destruction
328 *****************************************************************************
329 * This function is called when the thread ends after a sucessful
331 *****************************************************************************/
332 static void EndThread( vpar_thread_t *p_vpar )
338 intf_DbgMsg("vpar debug: destroying video parser thread %p", p_vpar);
340 /* Release used video buffers. */
341 if( p_vpar->sequence.p_forward != NULL )
343 vout_UnlinkPicture( p_vpar->p_vout, p_vpar->sequence.p_forward );
345 if( p_vpar->sequence.p_backward != NULL )
347 vout_DatePicture( p_vpar->p_vout, p_vpar->sequence.p_backward,
348 vpar_SynchroDate( p_vpar ) );
349 vout_UnlinkPicture( p_vpar->p_vout, p_vpar->sequence.p_backward );
353 intf_Msg("vpar stats: %d loops among %d sequence(s)",
354 p_vpar->c_loops, p_vpar->c_sequences);
357 struct tms cpu_usage;
360 intf_Msg("vpar stats: cpu usage (user: %d, system: %d)",
361 cpu_usage.tms_utime, cpu_usage.tms_stime);
364 intf_Msg("vpar stats: Read %d frames/fields (I %d/P %d/B %d)",
365 p_vpar->pc_pictures[I_CODING_TYPE]
366 + p_vpar->pc_pictures[P_CODING_TYPE]
367 + p_vpar->pc_pictures[B_CODING_TYPE],
368 p_vpar->pc_pictures[I_CODING_TYPE],
369 p_vpar->pc_pictures[P_CODING_TYPE],
370 p_vpar->pc_pictures[B_CODING_TYPE]);
371 intf_Msg("vpar stats: Decoded %d frames/fields (I %d/P %d/B %d)",
372 p_vpar->pc_decoded_pictures[I_CODING_TYPE]
373 + p_vpar->pc_decoded_pictures[P_CODING_TYPE]
374 + p_vpar->pc_decoded_pictures[B_CODING_TYPE],
375 p_vpar->pc_decoded_pictures[I_CODING_TYPE],
376 p_vpar->pc_decoded_pictures[P_CODING_TYPE],
377 p_vpar->pc_decoded_pictures[B_CODING_TYPE]);
378 intf_Msg("vpar stats: Read %d malformed frames/fields (I %d/P %d/B %d)",
379 p_vpar->pc_malformed_pictures[I_CODING_TYPE]
380 + p_vpar->pc_malformed_pictures[P_CODING_TYPE]
381 + p_vpar->pc_malformed_pictures[B_CODING_TYPE],
382 p_vpar->pc_malformed_pictures[I_CODING_TYPE],
383 p_vpar->pc_malformed_pictures[P_CODING_TYPE],
384 p_vpar->pc_malformed_pictures[B_CODING_TYPE]);
385 #define S p_vpar->sequence
386 intf_Msg("vpar info: %s stream (%dx%d), %d.%d pi/s",
387 S.b_mpeg2 ? "MPEG-2" : "MPEG-1",
388 S.i_width, S.i_height, S.i_frame_rate/1001, S.i_frame_rate % 1001);
389 intf_Msg("vpar info: %s, %s, matrix_coeff: %d",
390 S.b_progressive ? "Progressive" : "Non-progressive",
391 S.i_scalable_mode ? "scalable" : "non-scalable",
392 S.i_matrix_coefficients);
395 /* Dispose of matrices if they have been allocated. */
396 if( p_vpar->sequence.intra_quant.b_allocated )
398 free( p_vpar->sequence.intra_quant.pi_matrix );
400 if( p_vpar->sequence.nonintra_quant.b_allocated )
402 free( p_vpar->sequence.nonintra_quant.pi_matrix) ;
404 if( p_vpar->sequence.chroma_intra_quant.b_allocated )
406 free( p_vpar->sequence.chroma_intra_quant.pi_matrix );
408 if( p_vpar->sequence.chroma_nonintra_quant.b_allocated )
410 free( p_vpar->sequence.chroma_nonintra_quant.pi_matrix );
414 /* Destroy vdec threads */
415 for( i_dummy = 0; i_dummy < NB_VDEC; i_dummy++ )
417 if( p_vpar->pp_vdec[i_dummy] != NULL )
418 vdec_DestroyThread( p_vpar->pp_vdec[i_dummy] );
423 free( p_vpar->pp_vdec[0] );
426 free( p_vpar->p_config );
429 /* Destroy lock and cond */
430 vlc_mutex_destroy( &(p_vpar->vbuffer.lock) );
431 vlc_cond_destroy( &(p_vpar->vfifo.wait) );
432 vlc_mutex_destroy( &(p_vpar->vfifo.lock) );
435 vlc_mutex_destroy( &(p_vpar->synchro.fifo_lock) );
437 module_Unneed( p_main->p_module_bank, p_vpar->p_module );
441 intf_DbgMsg("vpar debug: EndThread(%p)", p_vpar);
444 /*****************************************************************************
445 * BitstreamCallback: Import parameters from the new data/PES packet
446 *****************************************************************************
447 * This function is called by input's NextDataPacket.
448 *****************************************************************************/
449 static void BitstreamCallback ( bit_stream_t * p_bit_stream,
450 boolean_t b_new_pes )
452 vpar_thread_t * p_vpar = (vpar_thread_t *)p_bit_stream->p_callback_arg;
456 p_vpar->sequence.next_pts =
457 DECODER_FIFO_START( *p_bit_stream->p_decoder_fifo )->i_pts;
458 p_vpar->sequence.next_dts =
459 DECODER_FIFO_START( *p_bit_stream->p_decoder_fifo )->i_dts;