aboutsummaryrefslogtreecommitdiffstats
path: root/src/DabMod.cpp
blob: db0c71242a21d3c13ee5f2bf6c5108134dca655e (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
/*
   Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
   Her Majesty the Queen in Right of Canada (Communications Research
   Center Canada)
 */
/*
   This file is part of CRC-DADMOD.

   CRC-DADMOD 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 3 of the
   License, or (at your option) any later version.

   CRC-DADMOD 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 CRC-DADMOD.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifdef HAVE_CONFIG_H
#   include "config.h"
#endif

#include "porting.h"

#include "DabModulator.h"
#include "InputMemory.h"
#include "OutputFile.h"
#include "PcDebug.h"

#include <complex>
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stdexcept>
#include <signal.h>
#include <string.h>

#ifdef HAVE_NETINET_IN_H
#   include <netinet/in.h>
#endif

#ifdef HAVE_DECL__MM_MALLOC
#   include <mm_malloc.h>
#else
#   define memalign(a, b)   malloc(b)
#endif


typedef std::complex<float> complexf;


bool running = true;

void signalHandler(int signalNb)
{
    PDEBUG("signalHandler(%i)\n", signalNb);

    running = false;
}


void printUsage(char* progName, FILE* out = stderr)
{
    fprintf(out, "Usage:\n");
    fprintf(out, "\t%s"
            " [input [output]]"
            " [-a amplitude]"
            " [-c clockrate]"
            " [-f]"
            " [-g gainMode]"
            " [-h]"
            " [-l]"
            " [-m dabMode]"
            " [-r samplingRate]"
            "\n", progName);
    fprintf(out, "Where:\n");
    fprintf(out, "input:    ETI input filename (default: stdin).\n");
    fprintf(out, "output:   COFDM output filename (default: stdout).\n");
    fprintf(out, "-a:       Apply amplitude gain.\n");
    fprintf(out, "-c:       Set the DAC clock rate.\n");
    fprintf(out, "-f:       (deprecated) Set fifo input.\n");
    fprintf(out, "-g:       Set computation gain mode: "
            "%u FIX, %u MAX, %u VAR\n", GAIN_FIX, GAIN_MAX, GAIN_VAR);
    fprintf(out, "-h:       Print this help.\n");
    fprintf(out, "-l:       Loop file when reach end of file.\n");
    fprintf(out, "-m:       Set DAB mode: (0: auto, 1-4: force).\n");
    fprintf(out, "-r:       Set output sampling rate (default: 2048000).\n");
}


void printVersion(FILE *out = stderr)
{
    fprintf(out, "Welcome to %s %s, compiled at %s, %s\n\n",
            PACKAGE, VERSION, __DATE__, __TIME__);
    fprintf(out, "CRC-DABMOD is copyright (C) Her Majesty the Queen in Right of Canada,\n"
            "    2009, 2010, 2011, 2012 Communications Research Centre (CRC).\n"
            "\n"
            "    This program is available free of charge and is licensed to you on a\n"
            "    non-exclusive basis; you may not redistribute it.\n"
            "\n"
            "    This program is provided \"AS IS\" in the hope that it will be useful, but\n"
            "    WITHOUT ANY WARRANTY with respect to its accurancy or usefulness; witout\n"
            "    even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR\n"
            "    PURPOSE and NONINFRINGEMENT.\n"
            "\n"
            "    In no event shall CRC be LIABLE for any LOSS, DAMAGE or COST that may be\n"
            "    incurred in connection with the use of this software.\n"
            "\n"
            "CRC-DABMOD makes use of the following open source packages:\n"
            "    Kiss FFT v1.2.9 (Revised BSD) - http://kissfft.sourceforge.net/\n"
           );

}


int main(int argc, char* argv[])
{
    int ret = 0;
    bool loop = false;
    char* inputName;
    char* outputName;
    FILE* inputFile = NULL;
    uint32_t sync = 0;
    uint32_t nbFrames = 0;
    uint32_t frame = 0;
    uint16_t frameSize = 0;
    size_t outputRate = 2048000;
    size_t clockRate = 0;
    unsigned dabMode = 0;
    float amplitude = 1.0f;
    GainMode gainMode = GAIN_VAR;
    Buffer data;

    Flowgraph* flowgraph = NULL;
    DabModulator* modulator = NULL;
    InputMemory* input = NULL;
    OutputFile* output = NULL;

    signal(SIGINT, signalHandler);

    while (true) {
        int c = getopt(argc, argv, "a:c:fg:hlm:r:V");
        if (c == -1) {
            break;
        }
        switch (c) {
        case 'a':
            amplitude = strtof(optarg, NULL);
            break;
        case 'c':
            clockRate = strtol(optarg, NULL, 0);
            break;
        case 'f':
            fprintf(stderr, "Option -f deprecated!\n");
            break;
        case 'g':
            gainMode = (GainMode)strtol(optarg, NULL, 0);
            break;
        case 'l':
            loop = true;
            break;
        case 'm':
            dabMode = strtol(optarg, NULL, 0);
            break;
        case 'r':
            outputRate = strtol(optarg, NULL, 0);
            break;
        case 'V':
            printVersion();
            goto END_MAIN;
            break;
        case '?':
        case 'h':
            printUsage(argv[0]);
            goto END_MAIN;
            break;
        default:
            fprintf(stderr, "Option '%c' not coded yet!\n", c);
            ret = -1;
            goto END_MAIN;
        }
    }
    // Setting ETI input filename
    if (optind < argc) {
        inputName = argv[optind++];
    } else {
        inputName = (char*)"/dev/stdin";
    }
    // Setting COFDM output filename
    if (optind < argc) {
        outputName = argv[optind++];
    } else {
        outputName = (char*)"/dev/stdout";
    }
    // Checking unused arguments
    if (optind != argc) {
        fprintf(stderr, "Invalid arguments:");
        while (optind != argc) {
            fprintf(stderr, " %s", argv[optind++]);
        }
        fprintf(stderr, "\n");
        printUsage(argv[0]);
        ret = -1;
        goto END_MAIN;
    }

    // Print settings
    fprintf(stderr, "Input\n");
    fprintf(stderr, "  Name: %s\n", inputName);
    fprintf(stderr, "Output\n");
    fprintf(stderr, "  Name: %s\n", outputName);
    fprintf(stderr, "  Sampling rate: ");
    if (outputRate > 1000) {
        if (outputRate > 1000000) {
            fprintf(stderr, "%.3g mHz\n", outputRate / 1000000.0f);
        } else {
            fprintf(stderr, "%.3g kHz\n", outputRate / 1000.0f);
        }
    } else {
        fprintf(stderr, "%zu Hz\n", outputRate);
    }

    // Opening ETI input file
    inputFile = fopen(inputName, "r");
    if (inputFile == NULL) {
        fprintf(stderr, "Unable to open input file!\n");
        perror(inputName);
        ret = -1;
        goto END_MAIN;
    }
    // Opening COFDM output file
    if (outputName != NULL) {
        output = new OutputFile(outputName);
    }

    flowgraph = new Flowgraph();
    data.setLength(6144);
    input = new InputMemory(&data);
    modulator = new DabModulator(outputRate, clockRate, dabMode, gainMode, amplitude);
    flowgraph->connect(input, modulator);
    flowgraph->connect(modulator, output);

    try {
        while (running) {
            enum EtiStreamType {
                ETI_STREAM_TYPE_NONE = 0,
                ETI_STREAM_TYPE_RAW,
                ETI_STREAM_TYPE_STREAMED,
                ETI_STREAM_TYPE_FRAMED,
            };
            EtiStreamType streamType = ETI_STREAM_TYPE_NONE;

            struct stat inputFileStat;
            fstat(fileno(inputFile), &inputFileStat);
            size_t inputFileLength = inputFileStat.st_size;

            if (fread(&sync, sizeof(sync), 1, inputFile) != 1) {
                fprintf(stderr, "Unable to read sync in input file!\n");
                perror(inputName);
                ret = -1;
                goto END_MAIN;
            }
            if ((sync == 0x49c5f8ff) || (sync == 0xb63a07ff)) {
                streamType = ETI_STREAM_TYPE_RAW;
                if (inputFileLength > 0) {
                    nbFrames = inputFileLength / 6144;
                } else {
                    nbFrames = (uint32_t)-1;
                }
                if (fseek(inputFile, -sizeof(sync), SEEK_CUR) != 0) {
                    if (fread(data.getData(), 6144 - sizeof(sync), 1, inputFile)
                            != 1) {
                        fprintf(stderr, "Unable to seek in input file!\n");
                        ret = -1;
                        goto END_MAIN;
                    }
                }
                goto START;
            }

            nbFrames = sync;
            if (fread(&frameSize, sizeof(frameSize), 1, inputFile) != 1) {
                fprintf(stderr, "Unable to read frame size in input file!\n");
                perror(inputName);
                ret = -1;
                goto END_MAIN;
            }
            sync >>= 16;
            sync &= 0xffff;
            sync |= ((uint32_t)frameSize) << 16;

            if ((sync == 0x49c5f8ff) || (sync == 0xb63a07ff)) {
                streamType = ETI_STREAM_TYPE_STREAMED;
                frameSize = nbFrames & 0xffff;
                if (inputFileLength > 0) {
                    nbFrames = inputFileLength / (frameSize + 2);
                } else {
                    nbFrames = (uint32_t)-1;
                }
                if (fseek(inputFile, -6, SEEK_CUR) != 0) {
                    if (fread(data.getData(), frameSize - 4, 1, inputFile)
                            != 1) {
                        fprintf(stderr, "Unable to seek in input file!\n");
                        ret = -1;
                        goto END_MAIN;
                    }
                }
                goto START;
            }

            if (fread(&sync, sizeof(sync), 1, inputFile) != 1) {
                fprintf(stderr, "Unable to read nb frame in input file!\n");
                perror(inputName);
                ret = -1;
                goto END_MAIN;
            }
            if ((sync == 0x49c5f8ff) || (sync == 0xb63a07ff)) {
                streamType = ETI_STREAM_TYPE_FRAMED;
                if (fseek(inputFile, -6, SEEK_CUR) != 0) {
                    if (fread(data.getData(), frameSize - 4, 1, inputFile)
                            != 1) {
                        fprintf(stderr, "Unable to seek in input file!\n");
                        ret = -1;
                        goto END_MAIN;
                    }
                }
                goto START;
            }

            for (size_t i = 10; i < 6144 + 10; ++i) {
                sync >>= 8;
                sync &= 0xffffff;
                if (fread((uint8_t*)&sync + 3, 1, 1, inputFile) != 1) {
                    fprintf(stderr, "Unable to read in input file!\n");
                    ret = 1;
                    goto END_MAIN;
                }
                if ((sync == 0x49c5f8ff) || (sync == 0xb63a07ff)) {
                    streamType = ETI_STREAM_TYPE_RAW;
                    if (inputFileLength > 0) {
                        nbFrames = (inputFileLength - i) / 6144;
                    } else {
                        nbFrames = (uint32_t)-1;
                    }
                    if (fseek(inputFile, -sizeof(sync), SEEK_CUR) != 0) {
                        if (fread(data.getData(), 6144 - sizeof(sync), 1, inputFile)
                                != 1) {
                            fprintf(stderr, "Unable to seek in input file!\n");
                            ret = -1;
                            goto END_MAIN;
                        }
                    }
                    goto START;
                }
            }

            fprintf(stderr, "Bad input file format!\n");
            ret = -1;
            goto END_MAIN;

START:
            fprintf(stderr, "Input file format: ");
            switch (streamType) {
            case ETI_STREAM_TYPE_RAW:
                fprintf(stderr, "raw");
                break;
            case ETI_STREAM_TYPE_STREAMED:
                fprintf(stderr, "streamed");
                break;
            case ETI_STREAM_TYPE_FRAMED:
                fprintf(stderr, "framed");
                break;
            default:
                fprintf(stderr, "unknown\n");
                ret = -1;
                goto END_MAIN;
            }
            fprintf(stderr, "\n");
            fprintf(stderr, "Input file length: %zu\n", inputFileLength);
            fprintf(stderr, "Input file nb frames: %u\n", nbFrames);

            for (frame = 0; frame < nbFrames; ++frame) {
                if (!running) {
                    break;
                }

                PDEBUG("*****************************************\n");
                PDEBUG("* Reading frame %u\n", frame);
                PDEBUG("*****************************************\n");
                if (streamType == ETI_STREAM_TYPE_RAW) {
                    frameSize = 6144;
                } else {
                    if (fread(&frameSize, sizeof(frameSize), 1, inputFile)
                            != 1) {
                        PDEBUG("End of file!\n");
                        goto END_MAIN;
                    }
                }
                PDEBUG("Frame size: %i\n", frameSize);

                if (fread(data.getData(), frameSize, 1, inputFile) != 1) {
                    fprintf(stderr,
                            "Unable to read %i data bytes in input file!\n",
                            frameSize);
                    perror(inputName);
                    ret = -1;
                    goto END_MAIN;
                }
                memset(&((uint8_t*)data.getData())[frameSize], 0x55, 6144 - frameSize);

                ////////////////////////////////////////////////////////////////
                // Proccessing data
                ////////////////////////////////////////////////////////////////
                flowgraph->run();
            }
            fprintf(stderr, "End of file reached.\n");
            if (!loop) {
                running = false;
            } else {
                fprintf(stderr, "Rewinding file.\n");
                rewind(inputFile);
            }
        }
    } catch (std::exception& e) {
        fprintf(stderr, "EXCEPTION: %s\n", e.what());
        ret = -1;
        goto END_MAIN;
    }

END_MAIN:
    ////////////////////////////////////////////////////////////////////////
    // Cleaning things
    ////////////////////////////////////////////////////////////////////////
    fprintf(stderr, "\n\n");
    fprintf(stderr, "%u DAB frames encoded\n", frame);
    fprintf(stderr, "%f seconds encoded\n", (float)frame * 0.024f);

    fprintf(stderr, "\nCleaning flowgraph...\n");
    delete flowgraph;

    // Cif
    fprintf(stderr, "\nCleaning buffers...\n");

    fprintf(stderr, "\nClosing input file...\n");
    if (inputFile != NULL) {
        fclose(inputFile);
    }

    return ret;
}