aboutsummaryrefslogtreecommitdiffstats
path: root/aac-enc-dabplus-zmq.c
blob: cb3bcf4ff017f145a04c56d2144b6e901045f173 (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
/* ------------------------------------------------------------------
 * Copyright (C) 2011 Martin Storsjo
 * Copyright (C) 2013 Matthias P. Braendli
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *	  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 * -------------------------------------------------------------------
 */

#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <getopt.h>
#include <zmq.h>
#include "libAACenc/include/aacenc_lib.h"
#include "wavreader.h"

#include <fec.h>

void usage(const char* name) {
	fprintf(stderr, "%s [OPTION...]\n", name);
	fprintf(stderr,
"	  -b, --bitrate={ 8, 16, ..., 192 }    Output bitrate in kbps. Must be 8 multiple.\n"
//"	  -d, --data=FILENAME                  Set data filename.\n"
//"	  -g, --fs-bug                         Turn on FS bug mitigation.\n"
"	  -i, --input=FILENAME                 Input filename (default: stdin).\n"
"	  -o, --output=URI                     Output zmq uri. (e.g. 'tcp://*:9000')\n"
"	  -a, --afterburner                    Turn on AAC encoder quality increaser.\n"
//"	  -m, --message                        Turn on AAC frame messages.\n"
//"	  -p, --pad=BYTES                      Set PAD size in bytes.\n"
"	  -f, --format={ wav, raw }            Set input file format (default: wav).\n"
"	  -c, --channels={ 1, 2 }              Nb of input channels for raw input (default: 2).\n"
"	  -r, --rate={ 32000, 48000 }          Sample rate for raw input (default: 48000).\n"
//"	  -t, --type=TYPE                      Set data type (dls|pad|packet|dg).\n"
//"	  -v, --verbose=LEVEL                  Set verbosity level.\n"
//"	  -V, --version                        Print version and exit.\n"
//"	  --mi=[ 0, ... ]                      Set AAC frame messages interval in milliseconds.\n"
//"	  --ma=[ 0, ... ]                      Set AAC frame messages attack time in milliseconds.\n"
//"	  -t, --adts                           Set ADTS output format (for debugging).\n"
//"	  -l, --lp                             Set frame size to 1024 instead of 960.\n"
"\n"
"Only the tcp:// zeromq transport has been tested until now.\n"

);

}


#define no_argument 0
#define required_argument 1
#define optional_argument 2

#define ADTS_HEADER_SIZE 7
#define ADTS_MPEG_ID 1 /* 0: MPEG-4, 1: MPEG-2 */
#define ADTS_MPEG_PROFILE 1
const int mpeg4audio_sample_rates[16] = {
    96000, 88200, 64000, 48000, 44100, 32000,
    24000, 22050, 16000, 12000, 11025, 8000, 7350
};

int FindSRIndex(int sr)
{
    int i;
    for (i = 0; i < 16; i++) {
	if (sr == mpeg4audio_sample_rates[i])
	    return i;
    }
    return 16 - 1;
}

void adts_hdr_up(char *buff, int size)
{
    unsigned short len = size + ADTS_HEADER_SIZE;
    unsigned short buffer_fullness = 0x07FF;

    /* frame length, 13 bits */
    buff[3] &= 0xFC;
    buff[3] |= ((len >> 11) & 0x03);	/* 2b: aac_frame_length */
    buff[4] = len >> 3;			/* 8b: aac_frame_length */
    buff[5] = (len << 5) & 0xE0;	/* 3b: aac_frame_length */
    /* buffer fullness, 11 bits */
    buff[5] |= ((buffer_fullness >> 6) & 0x1F);	/* 5b: adts_buffer_fullness */
    buff[6] = (buffer_fullness << 2) & 0xFC;	/* 6b: adts_buffer_fullness */
						/* 2b: num_raw_data_blocks */
}

int main(int argc, char *argv[]) {
	int subchannel_index = 8; //64kbps subchannel
	int ch=0;
	const char *infile = NULL;
	const char *outuri = NULL;
	FILE *in_fh;
	void *wav;
	int wav_format, bits_per_sample, sample_rate=48000, channels=2;
	uint8_t* input_buf;
	int16_t* convert_buf;
	void *rs_handler = NULL;
	int aot = AOT_DABPLUS_AAC_LC;
	int afterburner = 0, raw_input=0;
	HANDLE_AACENCODER handle;
	CHANNEL_MODE mode;
	AACENC_InfoStruct info = { 0 };

	void *zmq_context = zmq_ctx_new();
	void *zmq_sock = NULL;

	const struct option longopts[] = {
		{"bitrate",     required_argument,  0, 'b'},
	    {"input",       required_argument,  0, 'i'},
	    {"output",      required_argument,  0, 'o'},
	    {"format",      required_argument,  0, 'f'},
	    {"rate",        required_argument,  0, 'r'},
	    {"channels",    required_argument,  0, 'c'},
	    //{"lp",          no_argument,        0, 'l'},
	    //{"adts",        no_argument,        0, 't'},
	    {"afterburner", no_argument,        0, 'a'},
	    {"help",        no_argument,        0, 'h'},
	    {0,0,0,0},
	};

	int index;
	while(ch != -1) {
		ch = getopt_long(argc, argv, "tlhab:c:i:o:r:f:", longopts, &index);
		switch (ch) {
		case 'f':
			if(strcmp(optarg, "raw")==0) {
				raw_input = 1;
			} else if(strcmp(optarg, "wav")!=0)
				usage(argv[0]);
			break;
		case 'a':
			afterburner = 1;
			break;
		case 'b':
			subchannel_index = atoi(optarg) / 8;
			break;
		case 'c':
			channels = atoi(optarg);
			break;
		case 'r':
			sample_rate = atoi(optarg);
			break;
		case 'i':
			infile = optarg;
			break;
		case 'o':
			outuri = optarg;
			break;
		case '?':
		case 'h':
			usage(argv[0]);
			return 1;
		}
	}

	if(subchannel_index < 1 || subchannel_index > 24) {
		fprintf(stderr, "Bad subchannels number: %d, try other bitrate.\n", subchannel_index);
		return 1;
	}

	if(raw_input) {
		if(infile && strcmp(infile, "-")) {
			in_fh = fopen(infile, "rb");
			if(!in_fh) {
				fprintf(stderr, "Can't open input file!\n");
				return 1;
			}
		} else {
			in_fh = stdin;
		}
	} else {
		wav = wav_read_open(infile);
		if (!wav) {
			fprintf(stderr, "Unable to open wav file %s\n", infile);
			return 1;
		}
		if (!wav_get_header(wav, &wav_format, &channels, &sample_rate, &bits_per_sample, NULL)) {
			fprintf(stderr, "Bad wav file %s\n", infile);
			return 1;
		}
		if (wav_format != 1) {
			fprintf(stderr, "Unsupported WAV format %d\n", wav_format);
			return 1;
		}
		if (bits_per_sample != 16) {
			fprintf(stderr, "Unsupported WAV sample depth %d\n", bits_per_sample);
			return 1;
		}
		if (channels > 2) {
			fprintf(stderr, "Unsupported WAV channels %d\n", channels);
			return 1;
		}
	}

	if (outuri) {
		zmq_sock = zmq_socket(zmq_context, ZMQ_PUB);
		if (zmq_sock == NULL) {
			fprintf(stderr, "Error occurred during zmq_socket: %s\n", zmq_strerror(errno));
			return 2;
		}
		if (zmq_bind(zmq_sock, outuri) != 0) {
			fprintf(stderr, "Error occurred during zmq_bind: %s\n", zmq_strerror(errno));
			return 2;
		}
	} else {
		fprintf(stderr, "Output URI not defined\n");
		return 1;
	}


	switch (channels) {
	case 1: mode = MODE_1;       break;
	case 2: mode = MODE_2;       break;
	default:
		fprintf(stderr, "Unsupported channels number %d\n", channels);
		return 1;
	}


	if (aacEncOpen(&handle, 0x01|0x02|0x04, channels) != AACENC_OK) {
		fprintf(stderr, "Unable to open encoder\n");
		return 1;
	}


	if(channels == 2 && subchannel_index <= 6)
		aot = AOT_DABPLUS_PS;
	else if((channels == 1 && subchannel_index <= 8) || subchannel_index <= 10)
		aot = AOT_DABPLUS_SBR;

	fprintf(stderr, "Using %d subchannels. AAC type: %s%s%s. channels=%d, sample_rate=%d\n",
			subchannel_index,
			aot == AOT_DABPLUS_PS ? "HE-AAC v2" : "",
			aot == AOT_DABPLUS_SBR ? "HE-AAC" : "",
			aot == AOT_DABPLUS_AAC_LC ? "AAC-LC" : "",
			channels, sample_rate);

	if (aacEncoder_SetParam(handle, AACENC_AOT, aot) != AACENC_OK) {
		fprintf(stderr, "Unable to set the AOT\n");
		return 1;
	}
	if (aacEncoder_SetParam(handle, AACENC_SAMPLERATE, sample_rate) != AACENC_OK) {
		fprintf(stderr, "Unable to set the AOT\n");
		return 1;
	}
	if (aacEncoder_SetParam(handle, AACENC_CHANNELMODE, mode) != AACENC_OK) {
		fprintf(stderr, "Unable to set the channel mode\n");
		return 1;
	}
	if (aacEncoder_SetParam(handle, AACENC_CHANNELORDER, 1) != AACENC_OK) {
		fprintf(stderr, "Unable to set the wav channel order\n");
		return 1;
	}
	if (aacEncoder_SetParam(handle, AACENC_GRANULE_LENGTH, 960) != AACENC_OK) {
		fprintf(stderr, "Unable to set the AOT\n");
		return 1;
	}
	if (aacEncoder_SetParam(handle, AACENC_TRANSMUX, TT_DABPLUS) != AACENC_OK) {
		fprintf(stderr, "Unable to set the RAW transmux\n");
		return 1;
	}

	/*if (aacEncoder_SetParam(handle, AACENC_BITRATEMODE, 7 *AACENC_BR_MODE_SFR*) != AACENC_OK) {
		fprintf(stderr, "Unable to set the bitrate mode\n");
		return 1;
	}*/


	fprintf(stderr, "AAC bitrate set to: %d\n", subchannel_index*8000);
	if (aacEncoder_SetParam(handle, AACENC_BITRATE, subchannel_index*8000) != AACENC_OK) {
		fprintf(stderr, "Unable to set the bitrate\n");
		return 1;
	}
	if (aacEncoder_SetParam(handle, AACENC_AFTERBURNER, afterburner) != AACENC_OK) {
		fprintf(stderr, "Unable to set the afterburner mode\n");
		return 1;
	}
	if (aacEncEncode(handle, NULL, NULL, NULL, NULL) != AACENC_OK) {
		fprintf(stderr, "Unable to initialize the encoder\n");
		return 1;
	}
	if (aacEncInfo(handle, &info) != AACENC_OK) {
		fprintf(stderr, "Unable to get the encoder info\n");
		return 1;
	}

	fprintf(stderr, "DAB+ Encoding: framelen=%d\n", info.frameLength);

	int input_size = channels*2*info.frameLength;
	input_buf = (uint8_t*) malloc(input_size);
	convert_buf = (int16_t*) malloc(input_size);

	/* symsize=8, gfpoly=0x11d, fcr=0, prim=1, nroots=10, pad=135 */
	rs_handler = init_rs_char(8, 0x11d, 0, 1, 10, 135);
	if (rs_handler == NULL) {
		perror("init_rs_char failed");
		return 0;
	}

    int loops = 0;
    int outbuf_size = subchannel_index*120;
	uint8_t outbuf[20480];

	if(outbuf_size % 5 != 0) {
		fprintf(stderr, "(outbuf_size mod 5) = %d\n", outbuf_size % 5);
	}

	fprintf(stderr, "outbuf_size: %d\n", outbuf_size);
	//outbuf_size += (4 * subchannel_index * (8*8)/8) - outbuf_size/5;
	fprintf(stderr, "outbuf_size: %d\n", outbuf_size);

	int frame=0;
	int send_error_count = 0;
	while (1) {
		memset(outbuf, 0x00, outbuf_size);

		AACENC_BufDesc in_buf = { 0 }, out_buf = { 0 };
		AACENC_InArgs in_args = { 0 };
		AACENC_OutArgs out_args = { 0 };
		int in_identifier = IN_AUDIO_DATA;
		int in_size, in_elem_size;
		int out_identifier = OUT_BITSTREAM_DATA;
		int out_size, out_elem_size;
		int read=0, i;
		int send_error;
		void *in_ptr, *out_ptr;
		AACENC_ERROR err;

		if(raw_input) {
			if(fread(input_buf, input_size, 1, in_fh) == 1) {
				read = input_size;
			} else {
				fprintf(stderr, "Unable to read from input!\n");
				break;
			}
		} else {
			read = wav_read_data(wav, input_buf, input_size);
		}

		for (i = 0; i < read/2; i++) {
			const uint8_t* in = &input_buf[2*i];
			convert_buf[i] = in[0] | (in[1] << 8);
		}

		if (read <= 0) {
			in_args.numInSamples = -1;
		} else {
			in_ptr = convert_buf;
			in_size = read;
			in_elem_size = 2;

			in_args.numInSamples = read/2;
			in_buf.numBufs = 1;
			in_buf.bufs = &in_ptr;
			in_buf.bufferIdentifiers = &in_identifier;
			in_buf.bufSizes = &in_size;
			in_buf.bufElSizes = &in_elem_size;
		}
		out_ptr = outbuf;
		out_size = sizeof(outbuf);
		out_elem_size = 1;
		out_buf.numBufs = 1;
		out_buf.bufs = &out_ptr;
		out_buf.bufferIdentifiers = &out_identifier;
		out_buf.bufSizes = &out_size;
		out_buf.bufElSizes = &out_elem_size;

		if ((err = aacEncEncode(handle, &in_buf, &out_buf, &in_args, &out_args)) != AACENC_OK) {
			if (err == AACENC_ENCODE_EOF)
				break;
			fprintf(stderr, "Encoding failed\n");
			return 1;
		}
		if (out_args.numOutBytes == 0)
			continue;
#if 0
		unsigned char au_start[6];
		unsigned char* sfbuf = outbuf;
		au_start[0] = 6;
		au_start[1] = (*(sfbuf + 3) << 4) + ((*(sfbuf + 4)) >> 4);
		au_start[2] = ((*(sfbuf + 4) & 0x0f) << 8) + *(sfbuf + 5);
		fprintf (stderr, "au_start[0] = %d\n", au_start[0]);
		fprintf (stderr, "au_start[1] = %d\n", au_start[1]);
		fprintf (stderr, "au_start[2] = %d\n", au_start[2]);
#endif

		int row, col;
		unsigned char buf_to_rs_enc[110];
		unsigned char rs_enc[10];
		for(row=0; row < subchannel_index; row++) {
			for(col=0;col < 110; col++) {
				buf_to_rs_enc[col] = outbuf[subchannel_index * col + row];
			}

			encode_rs_char(rs_handler, buf_to_rs_enc, rs_enc);

			for(col=110; col<120; col++) {
				outbuf[subchannel_index * col + row] = rs_enc[col-110];
				assert(subchannel_index * col + row < outbuf_size);
			}
		}

		send_error = zmq_send(zmq_sock, outbuf, outbuf_size, ZMQ_DONTWAIT);
		if (send_error < 0) {
			fprintf(stderr, "ZeroMQ send failed! %s\n", zmq_strerror(errno));
			send_error_count ++;
		}

		if (send_error_count > 10)
		{
			fprintf(stderr, "ZeroMQ send failed ten times, aborting!\n");
			break;
		}
		//fwrite(outbuf, 1, /*out_args.numOutBytes*/ outbuf_size, out_fh);
		//fprintf(stderr, "Written %d/%d bytes!\n", out_args.numOutBytes + row*10, outbuf_size);
		if(out_args.numOutBytes + row*10 == outbuf_size)
			fprintf(stderr, ".");

//		if(frame > 10)
//			break;
		frame++;
	}
	free(input_buf);
	free(convert_buf);
	if(raw_input) {
		fclose(in_fh);
	} else {
		wav_read_close(wav);
	}
	zmq_close(zmq_sock);
	free_rs_char(rs_handler);

	aacEncClose(&handle);

	zmq_ctx_term(zmq_context);
	return 0;
}