1 /*****************************************************************************
2 * video_parser.c : video parser thread
3 *****************************************************************************
4 * Copyright (C) 1999, 2000 VideoLAN
5 * $Id: video_parser.c,v 1.56 2000/12/21 14:18:15 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 /* FIXME: passer en terminate/destroy avec les signaux supplémentaires ?? */
27 /*****************************************************************************
29 *****************************************************************************/
32 #include <stdlib.h> /* malloc(), free() */
33 #include <unistd.h> /* getpid() */
34 #include <sys/types.h> /* on BSD, uio.h needs types.h */
35 #include <sys/uio.h> /* "input.h" */
40 # include <sys/times.h>
50 #include "debug.h" /* XXX?? temporaire, requis par netlist.h */
52 #include "stream_control.h"
53 #include "input_ext-dec.h"
56 #include "video_output.h"
58 #include "vdec_idct.h"
59 #include "video_decoder.h"
60 #include "vdec_motion.h"
62 #include "vpar_blocks.h"
63 #include "vpar_headers.h"
64 #include "vpar_synchro.h"
65 #include "video_parser.h"
66 #include "video_fifo.h"
71 static int InitThread ( vpar_thread_t *p_vpar );
72 static void RunThread ( vpar_thread_t *p_vpar );
73 static void ErrorThread ( vpar_thread_t *p_vpar );
74 static void EndThread ( vpar_thread_t *p_vpar );
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 * Following configuration properties are used:
83 *****************************************************************************/
84 vlc_thread_t vpar_CreateThread( vdec_config_t * p_config )
86 vpar_thread_t * p_vpar;
88 intf_DbgMsg( "vpar debug: creating video parser thread\n" );
90 /* Allocate the memory needed to store the thread's structure */
91 if ( (p_vpar = (vpar_thread_t *)malloc( sizeof(vpar_thread_t) )) == NULL )
93 intf_ErrMsg( "vpar error: not enough memory "
94 "for vpar_CreateThread() to create the new thread\n");
99 * Initialize the thread properties
101 p_vpar->p_fifo = p_config->decoder_config.p_decoder_fifo;
102 p_vpar->p_config = p_config;
104 p_vpar->p_vout = p_config->p_vout;
106 /* Spawn the video parser thread */
107 if ( vlc_thread_create( &p_vpar->thread_id, "video parser",
108 (vlc_thread_func_t)RunThread, (void *)p_vpar ) )
110 intf_ErrMsg("vpar error: can't spawn video parser thread\n");
115 intf_DbgMsg("vpar debug: video parser thread (%p) created\n", p_vpar);
116 return( p_vpar->thread_id );
119 /* following functions are local */
121 /*****************************************************************************
122 * InitThread: initialize vpar output thread
123 *****************************************************************************
124 * This function is called from RunThread and performs the second step of the
125 * initialization. It returns 0 on success. Note that the thread's flag are not
126 * modified inside this function.
127 *****************************************************************************/
128 static int InitThread( vpar_thread_t *p_vpar )
134 intf_DbgMsg("vpar debug: initializing video parser thread %p\n", p_vpar);
136 p_vpar->p_config->decoder_config.pf_init_bit_stream( &p_vpar->bit_stream,
137 p_vpar->p_config->decoder_config.p_decoder_fifo );
139 /* Initialize parsing data */
140 p_vpar->sequence.p_forward = NULL;
141 p_vpar->sequence.p_backward = NULL;
142 p_vpar->sequence.intra_quant.b_allocated = 0;
143 p_vpar->sequence.nonintra_quant.b_allocated = 0;
144 p_vpar->sequence.chroma_intra_quant.b_allocated = 0;
145 p_vpar->sequence.chroma_nonintra_quant.b_allocated = 0;
147 /* Initialize copyright information */
148 p_vpar->sequence.b_copyright_flag = 0;
149 p_vpar->sequence.b_original = 0;
150 p_vpar->sequence.i_copyright_id = 0;
151 p_vpar->sequence.i_copyright_nb = 0;
153 p_vpar->picture.p_picture = NULL;
154 p_vpar->picture.i_current_structure = 0;
156 /* Initialize other properties */
159 p_vpar->c_sequences = 0;
160 memset(p_vpar->pc_pictures, 0, sizeof(p_vpar->pc_pictures));
161 memset(p_vpar->pc_decoded_pictures, 0, sizeof(p_vpar->pc_decoded_pictures));
162 memset(p_vpar->pc_malformed_pictures, 0,
163 sizeof(p_vpar->pc_malformed_pictures));
166 /* Initialize video FIFO */
167 vpar_InitFIFO( p_vpar );
169 memset( p_vpar->pp_vdec, 0, NB_VDEC*sizeof(vdec_thread_t *) );
172 /* Spawn video_decoder threads */
173 /* FIXME: modify the number of vdecs at runtime ?? */
174 for( i_dummy = 0; i_dummy < NB_VDEC; i_dummy++ )
176 if( (p_vpar->pp_vdec[i_dummy] = vdec_CreateThread( p_vpar )) == NULL )
182 /* Fake a video_decoder thread */
183 if( (p_vpar->pp_vdec[0] = (vdec_thread_t *)malloc(sizeof( vdec_thread_t )))
184 == NULL || vdec_InitThread( p_vpar->pp_vdec[0] ) )
188 p_vpar->pp_vdec[0]->b_die = 0;
189 p_vpar->pp_vdec[0]->b_error = 0;
190 p_vpar->pp_vdec[0]->p_vpar = p_vpar;
192 /* Re-nice ourself */
193 if( nice(VDEC_NICE) == -1 )
195 intf_WarnMsg( 2, "vpar warning : couldn't nice() (%s)\n",
200 /* Initialize lookup tables */
201 #if defined(MPEG2_COMPLIANT) && !defined(VDEC_DFT)
202 vpar_InitCrop( p_vpar );
204 vpar_InitMbAddrInc( p_vpar );
205 vpar_InitDCTTables( p_vpar );
206 vpar_InitPMBType( p_vpar );
207 vpar_InitBMBType( p_vpar );
208 vpar_InitDCTTables( p_vpar );
211 * Initialize the synchro properties
213 vpar_SynchroInit( p_vpar );
215 /* Mark thread as running and return */
216 intf_DbgMsg("vpar debug: InitThread(%p) succeeded\n", p_vpar);
220 /*****************************************************************************
221 * RunThread: generic parser thread
222 *****************************************************************************
223 * Video parser thread. This function only returns when the thread is
225 *****************************************************************************/
226 static void RunThread( vpar_thread_t *p_vpar )
228 intf_DbgMsg("vpar debug: running video parser thread (%p) (pid == %i)\n", p_vpar, getpid());
233 p_vpar->p_fifo->b_error = InitThread( p_vpar );
236 * Main loop - it is not executed if an error occured during
239 while( (!p_vpar->p_fifo->b_die) && (!p_vpar->p_fifo->b_error) )
241 /* Find the next sequence header in the stream */
242 p_vpar->p_fifo->b_error = vpar_NextSequenceHeader( p_vpar );
244 while( (!p_vpar->p_fifo->b_die) && (!p_vpar->p_fifo->b_error) )
249 /* Parse the next sequence, group or picture header */
250 if( vpar_ParseHeader( p_vpar ) )
252 /* End of sequence */
261 if( p_vpar->p_fifo->b_error )
263 ErrorThread( p_vpar );
270 /*****************************************************************************
271 * ErrorThread: RunThread() error loop
272 *****************************************************************************
273 * This function is called when an error occured during thread main's loop. The
274 * thread can still receive feed, but must be ready to terminate as soon as
276 *****************************************************************************/
277 static void ErrorThread( vpar_thread_t *p_vpar )
279 /* We take the lock, because we are going to read/write the start/end
280 * indexes of the decoder fifo */
281 vlc_mutex_lock( &p_vpar->p_fifo->data_lock );
283 /* Wait until a `die' order is sent */
284 while( !p_vpar->p_fifo->b_die )
286 /* Trash all received PES packets */
287 while( !DECODER_FIFO_ISEMPTY(*p_vpar->p_fifo) )
289 p_vpar->p_fifo->pf_delete_pes( p_vpar->p_fifo->p_packets_mgt,
290 DECODER_FIFO_START(*p_vpar->p_fifo) );
291 DECODER_FIFO_INCSTART( *p_vpar->p_fifo );
294 /* Waiting for the input thread to put new PES packets in the fifo */
295 vlc_cond_wait( &p_vpar->p_fifo->data_wait, &p_vpar->p_fifo->data_lock );
298 /* We can release the lock before leaving */
299 vlc_mutex_unlock( &p_vpar->p_fifo->data_lock );
302 /*****************************************************************************
303 * EndThread: thread destruction
304 *****************************************************************************
305 * This function is called when the thread ends after a sucessful
307 *****************************************************************************/
308 static void EndThread( vpar_thread_t *p_vpar )
314 intf_DbgMsg("vpar debug: destroying video parser thread %p\n", p_vpar);
317 intf_Msg("vpar stats: %d loops among %d sequence(s)\n",
318 p_vpar->c_loops, p_vpar->c_sequences);
321 struct tms cpu_usage;
324 intf_Msg("vpar stats: cpu usage (user: %d, system: %d)\n",
325 cpu_usage.tms_utime, cpu_usage.tms_stime);
328 intf_Msg("vpar stats: Read %d frames/fields (I %d/P %d/B %d)\n",
329 p_vpar->pc_pictures[I_CODING_TYPE]
330 + p_vpar->pc_pictures[P_CODING_TYPE]
331 + p_vpar->pc_pictures[B_CODING_TYPE],
332 p_vpar->pc_pictures[I_CODING_TYPE],
333 p_vpar->pc_pictures[P_CODING_TYPE],
334 p_vpar->pc_pictures[B_CODING_TYPE]);
335 intf_Msg("vpar stats: Decoded %d frames/fields (I %d/P %d/B %d)\n",
336 p_vpar->pc_decoded_pictures[I_CODING_TYPE]
337 + p_vpar->pc_decoded_pictures[P_CODING_TYPE]
338 + p_vpar->pc_decoded_pictures[B_CODING_TYPE],
339 p_vpar->pc_decoded_pictures[I_CODING_TYPE],
340 p_vpar->pc_decoded_pictures[P_CODING_TYPE],
341 p_vpar->pc_decoded_pictures[B_CODING_TYPE]);
342 intf_Msg("vpar stats: Read %d malformed frames/fields (I %d/P %d/B %d)\n",
343 p_vpar->pc_malformed_pictures[I_CODING_TYPE]
344 + p_vpar->pc_malformed_pictures[P_CODING_TYPE]
345 + p_vpar->pc_malformed_pictures[B_CODING_TYPE],
346 p_vpar->pc_malformed_pictures[I_CODING_TYPE],
347 p_vpar->pc_malformed_pictures[P_CODING_TYPE],
348 p_vpar->pc_malformed_pictures[B_CODING_TYPE]);
349 #define S p_vpar->sequence
350 intf_Msg("vpar info: %s stream (%dx%d), %d pi/s\n",
351 S.b_mpeg2 ? "MPEG-2" : "MPEG-1",
352 S.i_width, S.i_height, S.i_frame_rate/1001);
353 intf_Msg("vpar info: %s, %s, matrix_coeff: %d\n",
354 S.b_progressive ? "Progressive" : "Non-progressive",
355 S.i_scalable_mode ? "scalable" : "non-scalable",
356 S.i_matrix_coefficients);
359 /* Dispose of matrices if they have been allocated. */
360 if( p_vpar->sequence.intra_quant.b_allocated )
362 free( p_vpar->sequence.intra_quant.pi_matrix );
364 if( p_vpar->sequence.nonintra_quant.b_allocated )
366 free( p_vpar->sequence.nonintra_quant.pi_matrix) ;
368 if( p_vpar->sequence.chroma_intra_quant.b_allocated )
370 free( p_vpar->sequence.chroma_intra_quant.pi_matrix );
372 if( p_vpar->sequence.chroma_nonintra_quant.b_allocated )
374 free( p_vpar->sequence.chroma_nonintra_quant.pi_matrix );
378 /* Destroy vdec threads */
379 for( i_dummy = 0; i_dummy < NB_VDEC; i_dummy++ )
381 if( p_vpar->pp_vdec[i_dummy] != NULL )
382 vdec_DestroyThread( p_vpar->pp_vdec[i_dummy] );
387 free( p_vpar->pp_vdec[0] );
390 free( p_vpar->p_config );
393 intf_DbgMsg("vpar debug: EndThread(%p)\n", p_vpar);