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Added audio_formatChange test

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Brick 2023-08-31 22:35:59 +01:00 committed by Ryan C. Gordon
parent a59152688a
commit 28b28bd8f4
1 changed files with 158 additions and 1 deletions
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159
test/testautomation_audio.c
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@ -1073,6 +1073,159 @@ static int audio_convertAccuracy(void *arg)
return TEST_COMPLETED;
}
/**
* \brief Check accuracy when switching between formats
*
* \sa SDL_SetAudioStreamFormat
*/
static int audio_formatChange(void *arg)
{
int i;
SDL_AudioSpec spec1, spec2, spec3;
int frames_1, frames_2, frames_3;
int length_1, length_2, length_3;
int retval = 0;
int status = TEST_ABORTED;
float* buffer_1 = NULL;
float* buffer_2 = NULL;
float* buffer_3 = NULL;
SDL_AudioStream* stream = NULL;
double max_error = 0;
double sum_squared_error = 0;
double sum_squared_value = 0;
double signal_to_noise = 0;
double target_max_error = 0.02;
double target_signal_to_noise = 75.0;
int sine_freq = 500;
spec1.format = SDL_AUDIO_F32SYS;
spec1.channels = 1;
spec1.freq = 20000;
spec2.format = SDL_AUDIO_F32SYS;
spec2.channels = 1;
spec2.freq = 40000;
spec3.format = SDL_AUDIO_F32SYS;
spec3.channels = 1;
spec3.freq = 80000;
frames_1 = spec1.freq;
frames_2 = spec2.freq;
frames_3 = spec3.freq * 2;
length_1 = (int)(frames_1 * sizeof(*buffer_1));
buffer_1 = (float*) SDL_malloc(length_1);
if (!SDLTest_AssertCheck(buffer_1 != NULL, "Expected buffer_1 to be created.")) {
goto cleanup;
}
length_2 = (int)(frames_2 * sizeof(*buffer_2));
buffer_2 = (float*) SDL_malloc(length_2);
if (!SDLTest_AssertCheck(buffer_2 != NULL, "Expected buffer_2 to be created.")) {
goto cleanup;
}
length_3 = (int)(frames_3 * sizeof(*buffer_3));
buffer_3 = (float*) SDL_malloc(length_3);
if (!SDLTest_AssertCheck(buffer_3 != NULL, "Expected buffer_3 to be created.")) {
goto cleanup;
}
for (i = 0; i < frames_1; ++i) {
buffer_1[i] = (float) sine_wave_sample(i, spec1.freq, sine_freq, 0.0f);
}
for (i = 0; i < frames_2; ++i) {
buffer_2[i] = (float) sine_wave_sample(i, spec2.freq, sine_freq, 0.0f);
}
stream = SDL_CreateAudioStream(NULL, NULL);
if (!SDLTest_AssertCheck(stream != NULL, "Expected SDL_CreateAudioStream to succeed")) {
goto cleanup;
}
retval = SDL_SetAudioStreamFormat(stream, &spec1, &spec3);
if (!SDLTest_AssertCheck(retval == 0, "Expected SDL_SetAudioStreamFormat(spec1, spec3) to succeed")) {
goto cleanup;
}
retval = SDL_GetAudioStreamAvailable(stream);
if (!SDLTest_AssertCheck(retval == 0, "Expected SDL_GetAudioStreamAvailable return 0")) {
goto cleanup;
}
retval = SDL_PutAudioStreamData(stream, buffer_1, length_1);
if (!SDLTest_AssertCheck(retval == 0, "Expected SDL_PutAudioStreamData(buffer_1) to succeed")) {
goto cleanup;
}
retval = SDL_FlushAudioStream(stream);
if (!SDLTest_AssertCheck(retval == 0, "Expected SDL_FlushAudioStream to succeed")) {
goto cleanup;
}
retval = SDL_SetAudioStreamFormat(stream, &spec2, &spec3);
if (!SDLTest_AssertCheck(retval == 0, "Expected SDL_SetAudioStreamFormat(spec2, spec3) to succeed")) {
goto cleanup;
}
retval = SDL_PutAudioStreamData(stream, buffer_2, length_2);
if (!SDLTest_AssertCheck(retval == 0, "Expected SDL_PutAudioStreamData(buffer_1) to succeed")) {
goto cleanup;
}
retval = SDL_FlushAudioStream(stream);
if (!SDLTest_AssertCheck(retval == 0, "Expected SDL_FlushAudioStream to succeed")) {
goto cleanup;
}
retval = SDL_GetAudioStreamAvailable(stream);
if (!SDLTest_AssertCheck(retval == length_3, "Expected SDL_GetAudioStreamAvailable to return %i, got %i", length_3, retval)) {
goto cleanup;
}
retval = SDL_GetAudioStreamData(stream, buffer_3, length_3);
if (!SDLTest_AssertCheck(retval == length_3, "Expected SDL_GetAudioStreamData to return %i, got %i", length_3, retval)) {
goto cleanup;
}
retval = SDL_GetAudioStreamAvailable(stream);
if (!SDLTest_AssertCheck(retval == 0, "Expected SDL_GetAudioStreamAvailable to return 0")) {
goto cleanup;
}
for (i = 0; i < frames_3; ++i) {
const float output = buffer_3[i];
const float target = (float) sine_wave_sample(i, spec3.freq, sine_freq, 0.0f);
const double error = SDL_fabs(target - output);
max_error = SDL_max(max_error, error);
sum_squared_error += error * error;
sum_squared_value += target * target;
}
signal_to_noise = 10 * SDL_log10(sum_squared_value / sum_squared_error); /* decibel */
SDLTest_AssertCheck(isfinite(sum_squared_value), "Sum of squared target should be finite.");
SDLTest_AssertCheck(isfinite(sum_squared_error), "Sum of squared error should be finite.");
/* Infinity is theoretically possible when there is very little to no noise */
SDLTest_AssertCheck(!isnan(signal_to_noise), "Signal-to-noise ratio should not be NaN.");
SDLTest_AssertCheck(isfinite(max_error), "Maximum conversion error should be finite.");
SDLTest_AssertCheck(signal_to_noise >= target_signal_to_noise, "Conversion signal-to-noise ratio %f dB should be no less than %f dB.",
signal_to_noise, target_signal_to_noise);
SDLTest_AssertCheck(max_error <= target_max_error, "Maximum conversion error %f should be no more than %f.",
max_error, target_max_error);
status = TEST_COMPLETED;
cleanup:
SDL_free(buffer_1);
SDL_free(buffer_2);
SDL_free(buffer_3);
SDL_DestroyAudioStream(stream);
return status;
}
/* ================= Test Case References ================== */
/* Audio test cases */
@ -1146,12 +1299,16 @@ static const SDLTest_TestCaseReference audioTest17 = {
audio_convertAccuracy, "audio_convertAccuracy", "Check accuracy converting between audio formats.", TEST_ENABLED
};
static const SDLTest_TestCaseReference audioTest18 = {
audio_formatChange, "audio_formatChange", "Check handling of format changes.", TEST_ENABLED
};
/* Sequence of Audio test cases */
static const SDLTest_TestCaseReference *audioTests[] = {
&audioTest1, &audioTest2, &audioTest3, &audioTest4, &audioTest5, &audioTest6,
&audioTest7, &audioTest8, &audioTest9, &audioTest10, &audioTest11,
&audioTest12, &audioTest13, &audioTest14, &audioTest15, &audioTest16,
&audioTest17, NULL
&audioTest17, &audioTest18, NULL
};
/* Audio test suite (global) */