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comparison spandsp-0.0.3/spandsp-0.0.3/tests/playout_tests.c @ 5:f762bf195c4b

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import spandsp-0.0.3
author Peter Meerwald <pmeerw@cosy.sbg.ac.at>
date Fri, 25 Jun 2010 16:00:21 +0200
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4:26cd8f1ef0b1 5:f762bf195c4b
1 /*
2 * SpanDSP - a series of DSP components for telephony
3 *
4 * playout_tests.c
5 *
6 * Written by Steve Underwood <steveu@coppice.org>
7 *
8 * Copyright (C) 2005 Steve Underwood
9 *
10 * All rights reserved.
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License version 2, as
14 * published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 *
25 * $Id: playout_tests.c,v 1.16 2006/11/24 12:34:55 steveu Exp $
26 */
27
28 /*! \page playout_tests_page Playout (jitter buffering) tests
29 \section playout_tests_page_sec_1 What does it do?
30 These tests simulate timing jitter and packet loss in an audio stream, and see
31 how well the playout module copes.
32 */
33
34 #ifdef HAVE_CONFIG_H
35 #include "config.h"
36 #endif
37
38 #include <stdio.h>
39 #include <inttypes.h>
40 #include <stdlib.h>
41 #include <string.h>
42 #if defined(HAVE_TGMATH_H)
43 #include <tgmath.h>
44 #endif
45 #if defined(HAVE_MATH_H)
46 #include <math.h>
47 #endif
48 #include <tiffio.h>
49
50 #include <audiofile.h>
51
52 #include "spandsp.h"
53
54 #define INPUT_FILE_NAME "playout_in.wav"
55 #define OUTPUT_FILE_NAME "playout_out.wav"
56
57 #define BLOCK_LEN 160
58
59 static void dynamic_buffer_tests(void)
60 {
61 playout_state_t *s;
62 playout_frame_t frame;
63 playout_frame_t *p;
64 plc_state_t plc;
65 time_scale_t ts;
66 int16_t *amp;
67 int16_t fill[BLOCK_LEN];
68 int16_t buf[20*BLOCK_LEN];
69 int16_t out[10*BLOCK_LEN];
70 timestamp_t time_stamp;
71 timestamp_t next_actual_receive;
72 timestamp_t next_scheduled_receive;
73 int near_far_time_offset;
74 int rng;
75 int i;
76 int j;
77 int ret;
78 int len;
79 int inframes;
80 int outframes;
81 AFfilehandle inhandle;
82 AFfilehandle outhandle;
83 AFfilesetup filesetup;
84
85 filesetup = afNewFileSetup();
86 if (filesetup == AF_NULL_FILESETUP)
87 {
88 fprintf(stderr, " Failed to create file setup\n");
89 exit(2);
90 }
91 afInitSampleFormat(filesetup, AF_DEFAULT_TRACK, AF_SAMPFMT_TWOSCOMP, 16);
92 afInitRate(filesetup, AF_DEFAULT_TRACK, (float) SAMPLE_RATE);
93 afInitFileFormat(filesetup, AF_FILE_WAVE);
94 afInitChannels(filesetup, AF_DEFAULT_TRACK, 2);
95
96 inhandle = afOpenFile(INPUT_FILE_NAME, "r", NULL);
97 if (inhandle == AF_NULL_FILEHANDLE)
98 {
99 fprintf(stderr, " Failed to open wave file '%s'\n", INPUT_FILE_NAME);
100 exit(2);
101 }
102 outhandle = afOpenFile(OUTPUT_FILE_NAME, "w", filesetup);
103 if (outhandle == AF_NULL_FILEHANDLE)
104 {
105 fprintf(stderr, " Failed to create wave file '%s'\n", OUTPUT_FILE_NAME);
106 exit(2);
107 }
108
109 near_far_time_offset = 54321;
110 time_stamp = 12345;
111 next_actual_receive = time_stamp + near_far_time_offset;
112 next_scheduled_receive = 0;
113 for (i = 0; i < BLOCK_LEN; i++)
114 fill[i] = 32767;
115
116 if ((s = playout_new(2*BLOCK_LEN, 15*BLOCK_LEN)) == NULL)
117 return;
118 plc_init(&plc);
119 time_scale_init(&ts, 1.0);
120 for (i = 0; i < 1000000; i++)
121 {
122 if (i >= next_actual_receive)
123 {
124 amp = malloc(BLOCK_LEN*sizeof(int16_t));
125 inframes = afReadFrames(inhandle,
126 AF_DEFAULT_TRACK,
127 amp,
128 BLOCK_LEN);
129 if (inframes < BLOCK_LEN)
130 break;
131 ret = playout_put(s,
132 amp,
133 PLAYOUT_TYPE_SPEECH,
134 inframes,
135 time_stamp,
136 next_actual_receive);
137 #if 0
138 switch (ret)
139 {
140 case PLAYOUT_OK:
141 printf("<< Record\n");
142 break;
143 case PLAYOUT_ERROR:
144 printf("<< Error\n");
145 break;
146 default:
147 printf("<< Eh?\n");
148 break;
149 }
150 #endif
151 rng = rand() & 0xFF;
152 if (i < 100000)
153 rng = (rng*rng) >> 7;
154 else if (i < 200000)
155 rng = (rng*rng) >> 6;
156 else if (i < 300000)
157 rng = (rng*rng) >> 5;
158 else if (i < 400000)
159 rng = (rng*rng) >> 7;
160 time_stamp += BLOCK_LEN;
161 next_actual_receive = time_stamp + near_far_time_offset + rng;
162 }
163 if (i >= next_scheduled_receive)
164 {
165 do
166 {
167 ret = playout_get(s, &frame, next_scheduled_receive);
168 if (ret == PLAYOUT_DROP)
169 printf(">> Drop %d\n", next_scheduled_receive);
170 }
171 while (ret == PLAYOUT_DROP);
172 switch (ret)
173 {
174 case PLAYOUT_OK:
175 printf(">> Play %d\n", next_scheduled_receive);
176 plc_rx(&plc, frame.data, frame.sender_len);
177 len = time_scale(&ts, out, ((int16_t *) frame.data), frame.sender_len);
178 printf("len = %d\n", len);
179 for (j = 0; j < len; j++)
180 {
181 buf[2*j] = out[j];
182 buf[2*j + 1] = 10*playout_current_length(s);
183 }
184 outframes = afWriteFrames(outhandle, AF_DEFAULT_TRACK, buf, len);
185 if (outframes != len)
186 {
187 fprintf(stderr, " Error writing out sound\n");
188 exit(2);
189 }
190 free(frame.data);
191 next_scheduled_receive += BLOCK_LEN;
192 break;
193 case PLAYOUT_FILLIN:
194 printf(">> Fill %d\n", next_scheduled_receive);
195 plc_fillin(&plc, fill, BLOCK_LEN);
196 time_scale_rate(&ts, 0.5);
197 len = time_scale(&ts, out, fill, BLOCK_LEN);
198 time_scale_rate(&ts, 1.0);
199 printf("len = %d\n", len);
200 for (j = 0; j < len; j++)
201 {
202 buf[2*j] = out[j];
203 buf[2*j + 1] = 10*playout_current_length(s);
204 }
205 outframes = afWriteFrames(outhandle, AF_DEFAULT_TRACK, buf, len);
206 if (outframes != len)
207 {
208 fprintf(stderr, " Error writing out sound\n");
209 exit(2);
210 }
211 next_scheduled_receive += BLOCK_LEN;
212 break;
213 case PLAYOUT_DROP:
214 printf(">> Drop %d\n", next_scheduled_receive);
215 break;
216 case PLAYOUT_NOFRAME:
217 printf(">> No frame %d %d %d %d\n", next_scheduled_receive, playout_next_due(s), s->last_speech_sender_stamp, s->last_speech_sender_len);
218 next_scheduled_receive += BLOCK_LEN;
219 break;
220 case PLAYOUT_EMPTY:
221 printf(">> Empty %d\n", next_scheduled_receive);
222 next_scheduled_receive += BLOCK_LEN;
223 break;
224 case PLAYOUT_ERROR:
225 printf(">> Error %d\n", next_scheduled_receive);
226 next_scheduled_receive += BLOCK_LEN;
227 break;
228 default:
229 printf(">> Eh? %d\n", next_scheduled_receive);
230 break;
231 }
232 }
233 }
234 if (afCloseFile(inhandle) != 0)
235 {
236 fprintf(stderr, " Cannot close wave file '%s'\n", INPUT_FILE_NAME);
237 exit(2);
238 }
239 if (afCloseFile(outhandle) != 0)
240 {
241 fprintf(stderr, " Cannot close wave file '%s'\n", OUTPUT_FILE_NAME);
242 exit(2);
243 }
244 afFreeFileSetup(filesetup);
245
246 printf("%10" PRId32 " %10" PRId32 " %10d\n", s->state_just_in_time, s->state_late, playout_current_length(s));
247
248 /* Clear everything from the queue */
249 while ((p = playout_get_unconditional(s)))
250 /*free(p->data)*/;
251 /* Now free the context itself */
252 playout_free(s);
253 }
254 /*- End of function --------------------------------------------------------*/
255
256 static void static_buffer_tests(void)
257 {
258 playout_state_t *s;
259 playout_frame_t frame;
260 playout_frame_t *p;
261 int type;
262 uint8_t fr[BLOCK_LEN];
263 timestamp_t next_scheduled_send;
264 int transit_time;
265 timestamp_t next_actual_receive;
266 timestamp_t next_scheduled_receive;
267 int len;
268 int i;
269 int ret;
270
271 next_scheduled_send = 0;
272 transit_time = 320;
273 next_actual_receive = next_scheduled_send + transit_time;
274 next_scheduled_receive = 960;
275
276 memset(fr, 0, sizeof(fr));
277 type = PLAYOUT_TYPE_SPEECH;
278 len = BLOCK_LEN;
279
280 if ((s = playout_new(2*BLOCK_LEN, 2*BLOCK_LEN)) == NULL)
281 return;
282 for (i = 0; i < 1000000; i++)
283 {
284 if (i >= next_actual_receive)
285 {
286 ret = playout_put(s,
287 fr,
288 type,
289 len,
290 next_scheduled_send,
291 next_actual_receive);
292 switch (ret)
293 {
294 case PLAYOUT_OK:
295 printf("<< Record\n");
296 break;
297 case PLAYOUT_ERROR:
298 printf("<< Error\n");
299 break;
300 default:
301 printf("<< Eh?\n");
302 break;
303 }
304 next_scheduled_send += BLOCK_LEN;
305 ret = rand() & 0xFF;
306 ret = (ret*ret) >> 7;
307 transit_time = 320 + ret;
308 next_actual_receive = next_scheduled_send + transit_time;
309 }
310 if (i >= next_scheduled_receive)
311 {
312 do
313 {
314 ret = playout_get(s, &frame, next_scheduled_receive);
315 }
316 while (ret == PLAYOUT_DROP);
317 switch (ret)
318 {
319 case PLAYOUT_OK:
320 printf(">> Play\n");
321 next_scheduled_receive += BLOCK_LEN;
322 break;
323 case PLAYOUT_FILLIN:
324 printf(">> Fill\n");
325 next_scheduled_receive += BLOCK_LEN;
326 break;
327 case PLAYOUT_DROP:
328 printf(">> Drop\n");
329 break;
330 case PLAYOUT_NOFRAME:
331 printf(">> No frame\n");
332 next_scheduled_receive += BLOCK_LEN;
333 break;
334 case PLAYOUT_EMPTY:
335 printf(">> Empty\n");
336 next_scheduled_receive += BLOCK_LEN;
337 break;
338 case PLAYOUT_ERROR:
339 printf(">> Error\n");
340 next_scheduled_receive += BLOCK_LEN;
341 break;
342 default:
343 printf(">> Eh?\n");
344 break;
345 }
346 }
347 }
348 /* Clear everything from the queue */
349 while ((p = playout_get_unconditional(s)))
350 /*free(p->data)*/;
351 /* Now free the context itself */
352 playout_free(s);
353 }
354 /*- End of function --------------------------------------------------------*/
355
356 int main(int argc, char *argv[])
357 {
358 printf("Dynamic buffering tests\n");
359 dynamic_buffer_tests();
360 printf("Static buffering tests\n");
361 static_buffer_tests();
362 }
363 /*- End of function --------------------------------------------------------*/
364 /*- End of file ------------------------------------------------------------*/

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