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comparison spandsp-0.0.3/spandsp-0.0.3/tests/lpc10_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 * lpc10_tests.c - Test the LPC10 low bit rate speech codec.
5 *
6 * Written by Steve Underwood <steveu@coppice.org>
7 *
8 * Copyright (C) 2006 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: lpc10_tests.c,v 1.10 2006/11/20 13:58:57 steveu Exp $
26 */
27
28 /*! \file */
29
30 /*! \page lpc10_tests_page LPC10 codec tests
31 \section lpc10_tests_page_sec_1 What does it do?
32
33 \section lpc10_tests_page_sec_2 How is it used?
34 To perform a general audio quality test, lpc10 should be run. The file ../localtests/short_nb_voice.wav
35 will be compressed to LPC10 data, decompressed, and the resulting audio stored in post_lpc10.wav.
36 */
37
38 #ifdef HAVE_CONFIG_H
39 #include "config.h"
40 #endif
41
42 #include <inttypes.h>
43 #include <stdlib.h>
44 #include <unistd.h>
45 #include <stdio.h>
46 #include <string.h>
47 #if defined(HAVE_TGMATH_H)
48 #include <tgmath.h>
49 #endif
50 #if defined(HAVE_MATH_H)
51 #include <math.h>
52 #endif
53 #include <assert.h>
54 #include <fcntl.h>
55 #include <ctype.h>
56 #include <stdio.h>
57 #include <audiofile.h>
58 #include <tiffio.h>
59
60 #include "spandsp.h"
61
62 #define BLOCK_LEN 180
63
64 #define BLOCKS_PER_READ 1
65
66 #define IN_FILE_NAME "../localtests/dam9.wav"
67 #define REF_FILE_NAME "../localtests/dam9_lpc55.wav"
68 #define COMPRESS_FILE_NAME "lpc10_out.lpc10"
69 #define DECOMPRESS_FILE_NAME "lpc10_in.lpc10"
70 #define OUT_FILE_NAME "post_lpc10.wav"
71
72 int main(int argc, char *argv[])
73 {
74 AFfilehandle inhandle;
75 AFfilehandle refhandle;
76 AFfilehandle outhandle;
77 AFfilesetup filesetup;
78 int frames;
79 int outframes;
80 float x;
81 double pre_energy;
82 double post_energy;
83 double ref_energy;
84 double diff_energy;
85 int16_t pre_amp[BLOCKS_PER_READ*BLOCK_LEN];
86 int16_t post_amp[BLOCKS_PER_READ*BLOCK_LEN];
87 int16_t ref_amp[BLOCKS_PER_READ*BLOCK_LEN];
88 int16_t log_amp[BLOCKS_PER_READ*BLOCK_LEN*3];
89 uint8_t lpc10_data[BLOCKS_PER_READ*7];
90 double xx;
91 lpc10_encode_state_t *lpc10_enc_state;
92 lpc10_decode_state_t *lpc10_dec_state;
93 int i;
94 int block_no;
95 int log_error;
96 int compress;
97 int decompress;
98 const char *in_file_name;
99 int compress_file;
100 int decompress_file;
101 int len;
102
103 compress = FALSE;
104 decompress = FALSE;
105 log_error = TRUE;
106 in_file_name = IN_FILE_NAME;
107 for (i = 1; i < argc; i++)
108 {
109 if (strcmp(argv[i], "-c") == 0)
110 {
111 compress = TRUE;
112 continue;
113 }
114 if (strcmp(argv[i], "-d") == 0)
115 {
116 decompress = TRUE;
117 continue;
118 }
119 if (strcmp(argv[i], "-i") == 0)
120 {
121 in_file_name = argv[++i];
122 continue;
123 }
124 if (strcmp(argv[i], "-l") == 0)
125 {
126 log_error = FALSE;
127 continue;
128 }
129 }
130
131 compress_file = -1;
132 decompress_file = -1;
133 inhandle = AF_NULL_FILEHANDLE;
134 refhandle = AF_NULL_FILEHANDLE;
135 outhandle = AF_NULL_FILEHANDLE;
136 if (!decompress)
137 {
138 if ((inhandle = afOpenFile(in_file_name, "r", 0)) == AF_NULL_FILEHANDLE)
139 {
140 printf(" Cannot open wave file '%s'\n", in_file_name);
141 exit(2);
142 }
143 if ((x = afGetFrameSize(inhandle, AF_DEFAULT_TRACK, 1)) != 2.0)
144 {
145 printf(" Unexpected frame size in wave file '%s'\n", in_file_name);
146 exit(2);
147 }
148 if ((x = afGetRate(inhandle, AF_DEFAULT_TRACK)) != (float) SAMPLE_RATE)
149 {
150 printf(" Unexpected sample rate in wave file '%s'\n", in_file_name);
151 exit(2);
152 }
153 if ((x = afGetChannels(inhandle, AF_DEFAULT_TRACK)) != 1.0)
154 {
155 printf(" Unexpected number of channels in wave file '%s'\n", in_file_name);
156 exit(2);
157 }
158 if ((filesetup = afNewFileSetup()) == AF_NULL_FILESETUP)
159 {
160 fprintf(stderr, " Failed to create file setup\n");
161 exit(2);
162 }
163
164 if ((refhandle = afOpenFile(REF_FILE_NAME, "r", 0)) == AF_NULL_FILEHANDLE)
165 {
166 printf(" Cannot open wave file '%s'\n", REF_FILE_NAME);
167 exit(2);
168 }
169 if ((x = afGetFrameSize(refhandle, AF_DEFAULT_TRACK, 1)) != 2.0)
170 {
171 printf(" Unexpected frame size in wave file '%s'\n", REF_FILE_NAME);
172 exit(2);
173 }
174 if ((x = afGetRate(refhandle, AF_DEFAULT_TRACK)) != (float) SAMPLE_RATE)
175 {
176 printf(" Unexpected sample rate in wave file '%s'\n", REF_FILE_NAME);
177 exit(2);
178 }
179 if ((x = afGetChannels(refhandle, AF_DEFAULT_TRACK)) != 1.0)
180 {
181 printf(" Unexpected number of channels in wave file '%s'\n", REF_FILE_NAME);
182 exit(2);
183 }
184 }
185 else
186 {
187 if ((decompress_file = open(DECOMPRESS_FILE_NAME, O_RDONLY)) < 0)
188 {
189 fprintf(stderr, " Cannot open decompressed data file '%s'\n", DECOMPRESS_FILE_NAME);
190 exit(2);
191 }
192 }
193
194 if ((filesetup = afNewFileSetup()) == AF_NULL_FILESETUP)
195 {
196 fprintf(stderr, " Failed to create file setup\n");
197 exit(2);
198 }
199 afInitSampleFormat(filesetup, AF_DEFAULT_TRACK, AF_SAMPFMT_TWOSCOMP, 16);
200 afInitRate(filesetup, AF_DEFAULT_TRACK, (float) SAMPLE_RATE);
201 afInitFileFormat(filesetup, AF_FILE_WAVE);
202 afInitChannels(filesetup, AF_DEFAULT_TRACK, 1);
203
204 if ((outhandle = afOpenFile(OUT_FILE_NAME, "w", filesetup)) == AF_NULL_FILEHANDLE)
205 {
206 fprintf(stderr, " Cannot create wave file '%s'\n", OUT_FILE_NAME);
207 exit(2);
208 }
209
210 if ((lpc10_enc_state = lpc10_encode_init(NULL, TRUE)) == NULL)
211 {
212 fprintf(stderr, " Cannot create encoder\n");
213 exit(2);
214 }
215
216 if ((lpc10_dec_state = lpc10_decode_init(NULL, TRUE)) == NULL)
217 {
218 fprintf(stderr, " Cannot create decoder\n");
219 exit(2);
220 }
221
222 if (compress)
223 {
224 if ((compress_file = open(COMPRESS_FILE_NAME, O_WRONLY | O_CREAT | O_TRUNC, 0666)) < 0)
225 {
226 fprintf(stderr, " Cannot create compressed data file '%s'\n", COMPRESS_FILE_NAME);
227 exit(2);
228 }
229 }
230
231 pre_energy = 0.0;
232 post_energy = 0.0;
233 ref_energy = 0.0;
234 diff_energy = 0.0;
235
236 if (decompress)
237 {
238 while ((len = read(decompress_file, lpc10_data, BLOCKS_PER_READ*7)) > 0)
239 {
240 lpc10_decode(lpc10_dec_state, post_amp, lpc10_data, len/7);
241 outframes = afWriteFrames(outhandle, AF_DEFAULT_TRACK, post_amp, BLOCK_LEN*len/7);
242 }
243 }
244 else
245 {
246 block_no = 0;
247 while ((frames = afReadFrames(inhandle, AF_DEFAULT_TRACK, pre_amp, BLOCKS_PER_READ*BLOCK_LEN)) == BLOCKS_PER_READ*BLOCK_LEN
248 &&
249 (frames = afReadFrames(refhandle, AF_DEFAULT_TRACK, ref_amp, BLOCKS_PER_READ*BLOCK_LEN)) == BLOCKS_PER_READ*BLOCK_LEN)
250 {
251 lpc10_encode(lpc10_enc_state, lpc10_data, pre_amp, BLOCKS_PER_READ);
252 if (compress)
253 write(compress_file, lpc10_data, BLOCKS_PER_READ*7);
254 lpc10_decode(lpc10_dec_state, post_amp, lpc10_data, BLOCKS_PER_READ);
255 for (i = 0; i < BLOCK_LEN; i++)
256 {
257 pre_energy += (double) pre_amp[i]*(double) pre_amp[i];
258 post_energy += (double) post_amp[i]*(double) post_amp[i];
259 ref_energy += (double) ref_amp[i]*(double) ref_amp[i];
260 /* The reference file has some odd clipping, so eliminate this from the
261 energy measurement. */
262 if (ref_amp[i] == 32767 || ref_amp[i] == -32768)
263 xx = 0.0;
264 else
265 xx = post_amp[i] - ref_amp[i];
266 diff_energy += (double) xx*(double) xx;
267 log_amp[i] = xx;
268 }
269 block_no++;
270 if (log_error)
271 outframes = afWriteFrames(outhandle, AF_DEFAULT_TRACK, log_amp, frames);
272 else
273 outframes = afWriteFrames(outhandle, AF_DEFAULT_TRACK, post_amp, frames);
274 }
275 if (afCloseFile(inhandle) != 0)
276 {
277 printf(" Cannot close wave file '%s'\n", in_file_name);
278 exit(2);
279 }
280 if (afCloseFile(refhandle) != 0)
281 {
282 printf(" Cannot close wave file '%s'\n", REF_FILE_NAME);
283 exit(2);
284 }
285 }
286
287 if (afCloseFile(outhandle) != 0)
288 {
289 printf(" Cannot close wave file '%s'\n", OUT_FILE_NAME);
290 exit(2);
291 }
292 afFreeFileSetup(filesetup);
293 if (compress)
294 close(compress_file);
295 if (decompress)
296 close(decompress_file);
297 lpc10_encode_release(lpc10_enc_state);
298 lpc10_decode_release(lpc10_dec_state);
299
300 if (!decompress)
301 {
302 printf("Output energy is %f%% of input energy.\n", 100.0*post_energy/pre_energy);
303 printf("Difference energy is %f%% of the total.\n", 100.0*diff_energy/ref_energy);
304 if (fabs(1.0 - post_energy/pre_energy) > 0.05
305 ||
306 fabs(diff_energy/post_energy) > 0.03)
307 {
308 printf("Tests failed.\n");
309 exit(2);
310 }
311 printf("Tests passed.\n");
312 }
313 return 0;
314 }
315 /*- End of function --------------------------------------------------------*/
316 /*- End of file ------------------------------------------------------------*/

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