summaryrefslogtreecommitdiffstats
path: root/media/libcubeb/test/test_audio.cpp
blob: 7c99a1814ad497c3134784a032816409f21a2621 (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
/*
 * Copyright © 2013 Sebastien Alaiwan <sebastien.alaiwan@gmail.com>
 *
 * This program is made available under an ISC-style license.  See the
 * accompanying file LICENSE for details.
 */

/* libcubeb api/function exhaustive test. Plays a series of tones in different
 * conditions. */
#include "gtest/gtest.h"
#if !defined(_XOPEN_SOURCE)
#define _XOPEN_SOURCE 600
#endif
#include "cubeb/cubeb.h"
#include <math.h>
#include <memory>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <string>

// #define ENABLE_NORMAL_LOG
// #define ENABLE_VERBOSE_LOG
#include "common.h"

using namespace std;

#define MAX_NUM_CHANNELS 32
#define VOLUME 0.2

float
get_frequency(int channel_index)
{
  return 220.0f * (channel_index + 1);
}

template <typename T>
T
ConvertSample(double input);
template <>
float
ConvertSample(double input)
{
  return input;
}
template <>
short
ConvertSample(double input)
{
  return short(input * 32767.0f);
}

/* store the phase of the generated waveform */
struct synth_state {
  synth_state(int num_channels_, float sample_rate_)
      : num_channels(num_channels_), sample_rate(sample_rate_)
  {
    for (int i = 0; i < MAX_NUM_CHANNELS; ++i)
      phase[i] = 0.0f;
  }

  template <typename T> void run(T * audiobuffer, long nframes)
  {
    for (int c = 0; c < num_channels; ++c) {
      float freq = get_frequency(c);
      float phase_inc = 2.0 * M_PI * freq / sample_rate;
      for (long n = 0; n < nframes; ++n) {
        audiobuffer[n * num_channels + c] =
            ConvertSample<T>(sin(phase[c]) * VOLUME);
        phase[c] += phase_inc;
      }
    }
  }

private:
  int num_channels;
  float phase[MAX_NUM_CHANNELS];
  float sample_rate;
};

template <typename T>
long
data_cb(cubeb_stream * /*stream*/, void * user, const void * /*inputbuffer*/,
        void * outputbuffer, long nframes)
{
  synth_state * synth = (synth_state *)user;
  synth->run((T *)outputbuffer, nframes);
  return nframes;
}

void
state_cb_audio(cubeb_stream * /*stream*/, void * /*user*/,
               cubeb_state /*state*/)
{
}

/* Our android backends don't support float, only int16. */
int
supports_float32(string backend_id)
{
  return backend_id != "opensl" && backend_id != "audiotrack";
}

/* Some backends don't have code to deal with more than mono or stereo. */
int
supports_channel_count(string backend_id, int nchannels)
{
  return nchannels <= 2 ||
         (backend_id != "opensl" && backend_id != "audiotrack");
}

int
run_test(int num_channels, int sampling_rate, int is_float)
{
  int r = CUBEB_OK;

  cubeb * ctx = NULL;

  r = common_init(&ctx, "Cubeb audio test: channels");
  if (r != CUBEB_OK) {
    fprintf(stderr, "Error initializing cubeb library\n");
    return r;
  }
  std::unique_ptr<cubeb, decltype(&cubeb_destroy)> cleanup_cubeb_at_exit(
      ctx, cubeb_destroy);

  const char * backend_id = cubeb_get_backend_id(ctx);

  if ((is_float && !supports_float32(backend_id)) ||
      !supports_channel_count(backend_id, num_channels)) {
    /* don't treat this as a test failure. */
    return CUBEB_OK;
  }

  fprintf(stderr, "Testing %d channel(s), %d Hz, %s (%s)\n", num_channels,
          sampling_rate, is_float ? "float" : "short",
          cubeb_get_backend_id(ctx));

  cubeb_stream_params params;
  params.format = is_float ? CUBEB_SAMPLE_FLOAT32NE : CUBEB_SAMPLE_S16NE;
  params.rate = sampling_rate;
  params.channels = num_channels;
  params.layout = CUBEB_LAYOUT_UNDEFINED;
  params.prefs = CUBEB_STREAM_PREF_NONE;

  synth_state synth(params.channels, params.rate);

  cubeb_stream * stream = NULL;
  r = cubeb_stream_init(ctx, &stream, "test tone", NULL, NULL, NULL, &params,
                        4096, is_float ? &data_cb<float> : &data_cb<short>,
                        state_cb_audio, &synth);
  if (r != CUBEB_OK) {
    fprintf(stderr, "Error initializing cubeb stream: %d\n", r);
    return r;
  }

  std::unique_ptr<cubeb_stream, decltype(&cubeb_stream_destroy)>
      cleanup_stream_at_exit(stream, cubeb_stream_destroy);

  cubeb_stream_start(stream);
  delay(200);
  cubeb_stream_stop(stream);

  return r;
}

int
run_volume_test(int is_float)
{
  int r = CUBEB_OK;

  cubeb * ctx = NULL;

  r = common_init(&ctx, "Cubeb audio test");
  if (r != CUBEB_OK) {
    fprintf(stderr, "Error initializing cubeb library\n");
    return r;
  }

  std::unique_ptr<cubeb, decltype(&cubeb_destroy)> cleanup_cubeb_at_exit(
      ctx, cubeb_destroy);

  const char * backend_id = cubeb_get_backend_id(ctx);

  if ((is_float && !supports_float32(backend_id))) {
    /* don't treat this as a test failure. */
    return CUBEB_OK;
  }

  cubeb_stream_params params;
  params.format = is_float ? CUBEB_SAMPLE_FLOAT32NE : CUBEB_SAMPLE_S16NE;
  params.rate = 44100;
  params.channels = 2;
  params.layout = CUBEB_LAYOUT_STEREO;
  params.prefs = CUBEB_STREAM_PREF_NONE;

  synth_state synth(params.channels, params.rate);

  cubeb_stream * stream = NULL;
  r = cubeb_stream_init(ctx, &stream, "test tone", NULL, NULL, NULL, &params,
                        4096, is_float ? &data_cb<float> : &data_cb<short>,
                        state_cb_audio, &synth);
  if (r != CUBEB_OK) {
    fprintf(stderr, "Error initializing cubeb stream: %d\n", r);
    return r;
  }

  std::unique_ptr<cubeb_stream, decltype(&cubeb_stream_destroy)>
      cleanup_stream_at_exit(stream, cubeb_stream_destroy);

  fprintf(stderr, "Testing: volume\n");
  for (int i = 0; i <= 4; ++i) {
    fprintf(stderr, "Volume: %d%%\n", i * 25);

    cubeb_stream_set_volume(stream, i / 4.0f);
    cubeb_stream_start(stream);
    delay(400);
    cubeb_stream_stop(stream);
    delay(100);
  }

  return r;
}

TEST(cubeb, run_volume_test_short) { ASSERT_EQ(run_volume_test(0), CUBEB_OK); }

TEST(cubeb, run_volume_test_float) { ASSERT_EQ(run_volume_test(1), CUBEB_OK); }

TEST(cubeb, run_channel_rate_test)
{
  unsigned int channel_values[] = {
      1, 2, 3, 4, 6,
  };

  int freq_values[] = {
      16000,
      24000,
      44100,
      48000,
  };

  for (auto channels : channel_values) {
    for (auto freq : freq_values) {
      ASSERT_TRUE(channels < MAX_NUM_CHANNELS);
      fprintf(stderr, "--------------------------\n");
      ASSERT_EQ(run_test(channels, freq, 0), CUBEB_OK);
      ASSERT_EQ(run_test(channels, freq, 1), CUBEB_OK);
    }
  }
}

#undef MAX_NUM_CHANNELS
#undef VOLUME