summaryrefslogtreecommitdiff
path: root/src/libmplex_wrapper.cc
blob: a93b4a9b0ca5c1bc2c2ff452bf157a3f07f7b6d8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
 *            libmplex_wrapper.cc
 *
 *  Sun Oct 30 12:28:47 CET 2005
 *  Copyright  2005 Bent Bisballe Nyeng
 *  deva@aasimon.org
 ****************************************************************************/

/*
 *  This file is part of MIaV.
 *
 *  MIaV is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  MIaV is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with MIaV; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
 */
#include "config.h"
#include "libmplex_wrapper.h"
#include "miav_config.h"

#include <mjpeg_types.h>
#include <mjpeg_logging.h>
#include <mpegconsts.h>

#include <mplex/interact.hpp>
#include <mplex/bits.hpp>
#include <mplex/outputstrm.hpp>
#include <mplex/multiplexor.hpp>

/**
 * FrameOutputStream - Wraps the File object
 */
class FrameOutputStream : public OutputStream
{
public:
    FrameOutputStream( Info *info, File *outputfile );
    int  Open( );
    void Close();
    off_t SegmentSize( );
    void NextSegment();
    void Write(uint8_t *data, unsigned int len);

private:
  Info *info;
  off_t written;
  File *file;
};



FrameOutputStream::FrameOutputStream( Info *info, File *outputfile ) 
{
  this->info = info;
  file = outputfile;
  written = 0;
  info->info("FrameOutputStream - constructor");
}
      
int FrameOutputStream::Open()
{
  //  info->info("FrameOutputStream::Open");
  // Nothing to do here!
	return 0;
}

void FrameOutputStream::Close()
{ 
  //  info->info("FrameOutputStream::Close");
  // Nothing to do here!
}


off_t FrameOutputStream::SegmentSize()
{
  //  info->info("FrameOutputStream::SegmentSize - return: %d", written);
  return written;

  /*
	struct stat stb;
  fstat(fileno(strm), &stb);
	off_t written = stb.st_size;
  return written;
  */
}

void FrameOutputStream::NextSegment( )
{
  //  info->info("FrameOutputStream::NextSegment");
  // Nothing to do here!
  /*
  auto_ptr<char> prev_filename_buf( new char[strlen(cur_filename)+1] );
  char *prev_filename = prev_filename_buf.get();
	fclose(strm);
	++segment_num;
  strcpy( prev_filename, cur_filename );
	snprintf( cur_filename, MAXPATHLEN, filename_pat, segment_num );
	if( strcmp( prev_filename, cur_filename ) == 0 ) {
    mjpeg_error_exit1("Need to split output but there appears to be no %%d in the filename pattern %s", 
                      filename_pat );
	}
	strm = fopen( cur_filename, "wb" );
	if( strm == NULL ) {
		mjpeg_error_exit1( "Could not open for writing: %s", cur_filename );
	}
  */
}

void FrameOutputStream::Write( uint8_t *buf, unsigned int len )
{
  unsigned int write;
  write = file->Write(buf, len);
  written += write;
  //  info->info("FrameOutputStream::Write - len: %d", len);
}

/**
 * FrameInputStream - Wraps the ThreadSafeQueuePriority objects, containing 
 * the prosessed frames from libfame and liblame.
 */
class FrameInputStream : public IBitStream
{
public:
 	FrameInputStream(  Info *info, ThreadSafeQueuePriority *queue );
	~FrameInputStream();

private:
  Frame *getFrame();
  size_t ReadStreamBytes( uint8_t *buf, size_t size );
	bool EndOfStream();

  Info *info;
  ThreadSafeQueuePriority *queue;
  bool seen_eof;
  Frame *frame;
  unsigned int read;
};

FrameInputStream::FrameInputStream( Info *info, ThreadSafeQueuePriority *queue ) :
    IBitStream()
{
  this->info = info;
  this->queue = queue;
  seen_eof = false;
  frame = NULL;
  read = 0;
  streamname = "MIaV Stream\0";
  
  //  info->info("FrameInputStream - constructor", seen_eof);

  /*
	if ((fileh = fopen(bs_filename, "rb")) == NULL)
	{
		mjpeg_error_exit1( "Unable to open file %s for reading.", bs_filename);
	}
	filename = strcpy( new char[strlen(bs_filename)+1], bs_filename );
    streamname = filename;

    SetBufSize(buf_size);
	eobs = false;
    byteidx = 0;
	if (!ReadIntoBuffer())
	{
		if (buffered==0)
		{
			mjpeg_error_exit1( "Unable to read from %s.", bs_filename);
		}
	}
  */
  SetBufSize(BUFFER_SIZE);
  // SetBufSize(buf_size);
	eobs = false;
  byteidx = 0;
	if (!ReadIntoBuffer()) {
		if (buffered==0) {
      info->error( "Unable to read from %s.", streamname);
		}
	}

  //  info->info("FrameInputStream - leaving constructor", seen_eof);
}


/**
   Destructor: close the device containing the bit stream after a read
   process
*/
FrameInputStream::~FrameInputStream()
{
  //  info->info("FrameInputStream - destructor", seen_eof);
  // Nothing to do here!
  /*
	if (fileh)
	{
		fclose(fileh);
		delete filename;
	}
	fileh = 0;
  */
  Release(); // Hmmm.. wonder what this 'Release()' does!?
}

Frame *FrameInputStream::getFrame()
{
  read = 0;
  return queue->pop();
}

bool FrameInputStream::EndOfStream()
{ 
  //  info->info("FrameInputStream::EndOfStream - return: %d", seen_eof);
  return seen_eof;
}

size_t FrameInputStream::ReadStreamBytes( uint8_t *buf, size_t size ) 
{
  //  info->info("FrameInputStream::ReadStreamBytes - size: %d", size);
  unsigned int copied = 0;
  
  while( copied < size ) {
    
    // If we read the entire frame, prepare to get a new one
    if(frame && read == frame->size) {
      delete frame;
      frame = NULL;
    }
    
    // If no frame is in the buffer, get one from the queue
    if(frame == NULL) frame = getFrame();
    
    // check for end of stream
    if( frame->endOfFrameStream == true) {
      seen_eof = true;
      return copied;
    }
    
    // If a frame exists in the buffer copy it to the output buffer
    // (No frame ocurres when *running is set to false)
    if( frame ) {
      unsigned int doread = (size - copied) < (frame->size - read) ?
        size - copied : (frame->size - read);
      
      //info->info("Requested: %d. Read: %d. Doread: %d. In buffer %d", size, (*read), doread, (*frame)->size);
      
      memcpy(buf + copied, frame->data + read, doread);
      read += doread;
      copied += doread;
    }
    }
  
  return copied;
}

/*******************************
 *
 * Command line job class - sets up a Multiplex Job based on command
 * line and File I/O...
 *
 ******************************/

class MIaVMultiplexJob : public MultiplexJob
{
public:
	MIaVMultiplexJob(Info *info, 
                   ThreadSafeQueuePriority *video_queue,
                   ThreadSafeQueuePriority *audio_queue);

private:
	bool ParseVideoOpt( const char *optarg );
	bool ParseLpcmOpt( const char *optarg );
};

MIaVMultiplexJob::MIaVMultiplexJob(Info *info, 
                                   ThreadSafeQueuePriority *video_queue,
                                   ThreadSafeQueuePriority *audio_queue) :
	MultiplexJob()
{
  //  this->info = info;
  //  info->info("MIaVMultiplexJob - constructor");
  outfile_pattern = "/tmp/aaargh.mpg"; // Output file... or something

  verbose = 0; // Level of verbosity. 0 = quiet, 1 = normal 2 = verbose/debug

  VBR = config->readInt("video_bitrate") == 0; // Multiplex variable bit-rate video

  always_system_headers = true; //  Create System header in every pack in generic formats

  // Specifies decoder buffers size in kB.  [ 20...2000]
  if( ! ParseVideoOpt( "500" ) )
    info->error( "Illegal video decoder buffer size(s): %s", "500" );

  // --lpcm-params | -L samppersec:chan:bits [, samppersec:chan:bits]
  //  if( ! ParseLpcmOpt( "48000:2:16" ) ) info->error( "Illegal LPCM option(s): %s", "48000:2:16" );

  data_rate = 0; //Specify data rate of output stream in kbit/sec (default 0=Compute from source streams)
  // Convert from kbit/sec (user spec) to 50B/sec units...
  data_rate = (( data_rate * 1000 / 8 + 49) / 50 ) * 50;

  audio_offset = 0; //Specify offset of timestamps (video-audio) in mSec
  video_offset = 0; //Specify offset of timestamps (video-audio) in mSec
          
  max_PTS = 0; // Multiplex only num seconds of material (default 0=multiplex all)
  
  packets_per_pack = 5; //Number of packets per pack generic formats [1..100]
  
  mux_format = 3; // Set defaults for particular MPEG profiles:
  // 0 = Generic MPEG1
  // 1 = VCD
  // 2 = user-rate VCD
  // 3 = Generic MPEG2
  // 4 = SVCD
  // 5 = user-rate SVCD
  // 6 = VCD Stills
  // 7 = SVCD Stills
  // 8 = DVD with NAV sectors
  // 9 = DVD

  sector_size = 2042; // Specify sector size in bytes for generic formats [256..16384]
  
  //max_segment_size = 0; // Maximum size of output file(s) in Mbyte (default: 0) (no limit)
  
  multifile_segment = true; // Don't switch to a new output file if a sequence end marker
  // is encountered ithe input video

  (void)mjpeg_default_handler_verbosity(verbose);
  info->info( "mplex version %s (%s %s)", VERSION,MPLEX_VER, MPLEX_DATE );
  
  // Connect streams
	vector<IBitStream *> inputs;
  if(video_queue) inputs.push_back( new FrameInputStream( info, video_queue ) );
  if(audio_queue) inputs.push_back( new FrameInputStream( info, audio_queue ) );
	SetupInputStreams( inputs );
}

/*************************************************************************
 Usage banner for the command line wrapper.
*************************************************************************/
/*
	mjpegtools mplex-2 version  VERSION  ( MPLEX_VER )
	Usage: %s [params] -o <output filename pattern> <input file>... 
	         %%d in the output file name is by segment count
	  where possible params are:
	--verbose|-v num
      Level of verbosity. 0 = quiet, 1 = normal 2 = verbose/debug
	--format|-f fmt
      Set defaults for particular MPEG profiles
	  [0 = Generic MPEG1, 1 = VCD, 2 = user-rate VCD, 3 = Generic MPEG2,
       4 = SVCD, 5 = user-rate SVCD
	   6 = VCD Stills, 7 = SVCD Stills, 8 = DVD with NAV sectors, 9 = DVD]
  --mux-bitrate|-r num
      Specify data rate of output stream in kbit/sec
	    (default 0=Compute from source streams)
	--video-buffer|-b num [, num...] 
      Specifies decoder buffers size in kB.  [ 20...2000]
  --lpcm-params | -L samppersec:chan:bits [, samppersec:chan:bits]
	--mux-limit|-l num
      Multiplex only num seconds of material (default 0=multiplex all)
	--sync-offset|-O num ms|s|mpt
      Specify offset of timestamps (video-audio) in mSec
	--sector-size|-s num
      Specify sector size in bytes for generic formats [256..16384]
  --vbr|-V
      Multiplex variable bit-rate video
	--packets-per-pack|-p num
      Number of packets per pack generic formats [1..100]
	--system-headers|-h
      Create System header in every pack in generic formats
	--max-segment-size|-S size
      Maximum size of output file(s) in Mbyte (default: 0) (no limit)
	--ignore-seqend-markers|-M
      Don't switch to a new output file if a  sequence end marker
	  is encountered ithe input video.
  --workaround|-W workaround [, workaround ]
	--help|-?
      Print this lot out!
*/


bool MIaVMultiplexJob::ParseLpcmOpt( const char *optarg )
{
  char *endptr, *startptr;
  unsigned int samples_sec;
  unsigned int channels;
  unsigned int bits_sample;
  endptr = const_cast<char *>(optarg);
  do {
    startptr = endptr;
    samples_sec = static_cast<unsigned int>(strtol(startptr, &endptr, 10));
    if( startptr == endptr || *endptr != ':' )
      return false;
    
    startptr = endptr+1;
    channels = static_cast<unsigned int>(strtol(startptr, &endptr, 10));
    if(startptr == endptr || *endptr != ':' )
      return false;
    
    startptr = endptr+1;
    bits_sample = static_cast<unsigned int>(strtol(startptr, &endptr, 10));
    if( startptr == endptr )
      return false;
      
    LpcmParams *params = LpcmParams::Checked( samples_sec,
                                              channels,
                                              bits_sample );
    if( params == 0 )
      return false;
    lpcm_param.push_back(params);
    if( *endptr == ',' )
      ++endptr;
  } while( *endptr != '\0' );
  return true;
}

bool MIaVMultiplexJob::ParseVideoOpt( const char *optarg )
{
    char *endptr, *startptr;
    unsigned int buffer_size;
    endptr = const_cast<char *>(optarg);
    do 
    {
        startptr = endptr;
        buffer_size = static_cast<unsigned int>(strtol(startptr, &endptr, 10));
        if( startptr == endptr )
            return false;

        VideoParams *params = VideoParams::Checked( buffer_size );
        if( params == 0 )
            return false;
        video_param.push_back(params);
        if( *endptr == ',' )
            ++endptr;
    } 
    while( *endptr != '\0' );
    return true;
}

LibMPlexWrapper::LibMPlexWrapper(Info *info,
                                 File *outputfile,
                                 ThreadSafeQueuePriority *video_queue,
                                 ThreadSafeQueuePriority *audio_queue)
{
  this->info = info;
  this->outputfile = outputfile;
  this->video_queue = video_queue;
  this->audio_queue = audio_queue;
}

LibMPlexWrapper::~LibMPlexWrapper()
{
}


void LibMPlexWrapper::multiplex()
{
  //  info->info("MPLEX!");
  //  sleep(10);
  //  info->info("The road goes ever on and on...");
	MIaVMultiplexJob job(info, video_queue, audio_queue);
	FrameOutputStream output( info, outputfile );
	Multiplexor mux(job, output);
	mux.Multiplex();
}


#ifdef LIBMPLEX_WRAPPER_TEST
int main (int argc, char* argv[])
{
  LibMPlexWrapper mplex;
  mplex.multiplex();
  return 0;	
}
#endif/*LIBMPLEX_WRAPPER_TEST*/