/**
* Original code: automated SDL audio test written by Edgar Simo "bobbens"
* New/updated tests: aschiffler at ferzkopp dot net
*/
/* quiet windows compiler warnings */
#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)
#define _CRT_SECURE_NO_WARNINGS
#endif
#include <math.h>
#include <stdio.h>
#include <string.h>
#include "SDL.h"
#include "SDL_test.h"
/* ================= Test Case Implementation ================== */
/* Fixture */
void _audioSetUp(void *arg)
{
/* Start SDL audio subsystem */
int ret = SDL_InitSubSystem(SDL_INIT_AUDIO);
SDLTest_AssertPass("Call to SDL_InitSubSystem(SDL_INIT_AUDIO)");
SDLTest_AssertCheck(ret == 0, "Check result from SDL_InitSubSystem(SDL_INIT_AUDIO)");
if (ret != 0) {
SDLTest_LogError("%s", SDL_GetError());
}
}
void _audioTearDown(void *arg)
{
/* Remove a possibly created file from SDL disk writer audio driver; ignore errors */
(void)remove("sdlaudio.raw");
SDLTest_AssertPass("Cleanup of test files completed");
}
/* Global counter for callback invocation */
int _audio_testCallbackCounter;
/* Global accumulator for total callback length */
int _audio_testCallbackLength;
/* Test callback function */
void SDLCALL _audio_testCallback(void *userdata, Uint8 *stream, int len)
{
/* track that callback was called */
_audio_testCallbackCounter++;
_audio_testCallbackLength += len;
}
/* Test case functions */
/**
* \brief Stop and restart audio subsystem
*
* \sa https://wiki.libsdl.org/SDL_QuitSubSystem
* \sa https://wiki.libsdl.org/SDL_InitSubSystem
*/
int audio_quitInitAudioSubSystem()
{
/* Stop SDL audio subsystem */
SDL_QuitSubSystem(SDL_INIT_AUDIO);
SDLTest_AssertPass("Call to SDL_QuitSubSystem(SDL_INIT_AUDIO)");
/* Restart audio again */
_audioSetUp(NULL);
return TEST_COMPLETED;
}
/**
* \brief Start and stop audio directly
*
* \sa https://wiki.libsdl.org/SDL_InitAudio
* \sa https://wiki.libsdl.org/SDL_QuitAudio
*/
int audio_initQuitAudio()
{
int result;
int i, iMax;
const char *audioDriver;
/* Stop SDL audio subsystem */
SDL_QuitSubSystem(SDL_INIT_AUDIO);
SDLTest_AssertPass("Call to SDL_QuitSubSystem(SDL_INIT_AUDIO)");
/* Loop over all available audio drivers */
iMax = SDL_GetNumAudioDrivers();
SDLTest_AssertPass("Call to SDL_GetNumAudioDrivers()");
SDLTest_AssertCheck(iMax > 0, "Validate number of audio drivers; expected: >0 got: %d", iMax);
for (i = 0; i < iMax; i++) {
audioDriver = SDL_GetAudioDriver(i);
SDLTest_AssertPass("Call to SDL_GetAudioDriver(%d)", i);
SDLTest_Assert(audioDriver != NULL, "Audio driver name is not NULL");
SDLTest_AssertCheck(audioDriver[0] != '\0', "Audio driver name is not empty; got: %s", audioDriver); /* NOLINT(clang-analyzer-core.NullDereference): Checked for NULL above */
/* Call Init */
result = SDL_AudioInit(audioDriver);
SDLTest_AssertPass("Call to SDL_AudioInit('%s')", audioDriver);
SDLTest_AssertCheck(result == 0, "Validate result value; expected: 0 got: %d", result);
/* Call Quit */
SDL_AudioQuit();
SDLTest_AssertPass("Call to SDL_AudioQuit()");
}
/* NULL driver specification */
audioDriver = NULL;
/* Call Init */
result = SDL_AudioInit(audioDriver);
SDLTest_AssertPass("Call to SDL_AudioInit(NULL)");
SDLTest_AssertCheck(result == 0, "Validate result value; expected: 0 got: %d", result);
/* Call Quit */
SDL_AudioQuit();
SDLTest_AssertPass("Call to SDL_AudioQuit()");
/* Restart audio again */
_audioSetUp(NULL);
return TEST_COMPLETED;
}
/**
* \brief Start, open, close and stop audio
*
* \sa https://wiki.libsdl.org/SDL_InitAudio
* \sa https://wiki.libsdl.org/SDL_OpenAudio
* \sa https://wiki.libsdl.org/SDL_CloseAudio
* \sa https://wiki.libsdl.org/SDL_QuitAudio
*/
int audio_initOpenCloseQuitAudio()
{
int result, expectedResult;
int i, iMax, j, k;
const char *audioDriver;
SDL_AudioSpec desired;
/* Stop SDL audio subsystem */
SDL_QuitSubSystem(SDL_INIT_AUDIO);
SDLTest_AssertPass("Call to SDL_QuitSubSystem(SDL_INIT_AUDIO)");
/* Loop over all available audio drivers */
iMax = SDL_GetNumAudioDrivers();
SDLTest_AssertPass("Call to SDL_GetNumAudioDrivers()");
SDLTest_AssertCheck(iMax > 0, "Validate number of audio drivers; expected: >0 got: %d", iMax);
for (i = 0; i < iMax; i++) {
audioDriver = SDL_GetAudioDriver(i);
SDLTest_AssertPass("Call to SDL_GetAudioDriver(%d)", i);
SDLTest_Assert(audioDriver != NULL, "Audio driver name is not NULL");
SDLTest_AssertCheck(audioDriver[0] != '\0', "Audio driver name is not empty; got: %s", audioDriver); /* NOLINT(clang-analyzer-core.NullDereference): Checked for NULL above */
/* Change specs */
for (j = 0; j < 2; j++) {
/* Call Init */
result = SDL_AudioInit(audioDriver);
SDLTest_AssertPass("Call to SDL_AudioInit('%s')", audioDriver);
SDLTest_AssertCheck(result == 0, "Validate result value; expected: 0 got: %d", result);
/* Set spec */
SDL_memset(&desired, 0, sizeof(desired));
switch (j) {
case 0:
/* Set standard desired spec */
desired.freq = 22050;
desired.format = AUDIO_S16SYS;
desired.channels = 2;
desired.samples = 4096;
desired.callback = _audio_testCallback;
desired.userdata = NULL;
break;
case 1:
/* Set custom desired spec */
desired.freq = 48000;
desired.format = AUDIO_F32SYS;
desired.channels = 2;
desired.samples = 2048;
desired.callback = _audio_testCallback;
desired.userdata = NULL;
break;
}
/* Call Open (maybe multiple times) */
for (k = 0; k <= j; k++) {
result = SDL_OpenAudio(&desired, NULL);
SDLTest_AssertPass("Call to SDL_OpenAudio(desired_spec_%d, NULL), call %d", j, k + 1);
expectedResult = (k == 0) ? 0 : -1;
SDLTest_AssertCheck(result == expectedResult, "Verify return value; expected: %d, got: %d", expectedResult, result);
}
/* Call Close (maybe multiple times) */
for (k = 0; k <= j; k++) {
SDL_CloseAudio();
SDLTest_AssertPass("Call to SDL_CloseAudio(), call %d", k + 1);
}
/* Call Quit (maybe multiple times) */
for (k = 0; k <= j; k++) {
SDL_AudioQuit();
SDLTest_AssertPass("Call to SDL_AudioQuit(), call %d", k + 1);
}
} /* spec loop */
} /* driver loop */
/* Restart audio again */
_audioSetUp(NULL);
return TEST_COMPLETED;
}
/**
* \brief Pause and unpause audio
*
* \sa https://wiki.libsdl.org/SDL_PauseAudio
*/
int audio_pauseUnpauseAudio()
{
int result;
int i, iMax, j, k, l;
int totalDelay;
int pause_on;
int originalCounter;
const char *audioDriver;
SDL_AudioSpec desired;
/* Stop SDL audio subsystem */
SDL_QuitSubSystem(SDL_INIT_AUDIO);
SDLTest_AssertPass("Call to SDL_QuitSubSystem(SDL_INIT_AUDIO)");
/* Loop over all available audio drivers */
iMax = SDL_GetNumAudioDrivers();
SDLTest_AssertPass("Call to SDL_GetNumAudioDrivers()");
SDLTest_AssertCheck(iMax > 0, "Validate number of audio drivers; expected: >0 got: %d", iMax);
for (i = 0; i < iMax; i++) {
audioDriver = SDL_GetAudioDriver(i);
SDLTest_AssertPass("Call to SDL_GetAudioDriver(%d)", i);
SDLTest_Assert(audioDriver != NULL, "Audio driver name is not NULL");
SDLTest_AssertCheck(audioDriver[0] != '\0', "Audio driver name is not empty; got: %s", audioDriver); /* NOLINT(clang-analyzer-core.NullDereference): Checked for NULL above */
/* Change specs */
for (j = 0; j < 2; j++) {
/* Call Init */
result = SDL_AudioInit(audioDriver);
SDLTest_AssertPass("Call to SDL_AudioInit('%s')", audioDriver);
SDLTest_AssertCheck(result == 0, "Validate result value; expected: 0 got: %d", result);
/* Set spec */
SDL_memset(&desired, 0, sizeof(desired));
switch (j) {
case 0:
/* Set standard desired spec */
desired.freq = 22050;
desired.format = AUDIO_S16SYS;
desired.channels = 2;
desired.samples = 4096;
desired.callback = _audio_testCallback;
desired.userdata = NULL;
break;
case 1:
/* Set custom desired spec */
desired.freq = 48000;
desired.format = AUDIO_F32SYS;
desired.channels = 2;
desired.samples = 2048;
desired.callback = _audio_testCallback;
desired.userdata = NULL;
break;
}
/* Call Open */
result = SDL_OpenAudio(&desired, NULL);
SDLTest_AssertPass("Call to SDL_OpenAudio(desired_spec_%d, NULL)", j);
SDLTest_AssertCheck(result == 0, "Verify return value; expected: 0 got: %d", result);
/* Start and stop audio multiple times */
for (l = 0; l < 3; l++) {
SDLTest_Log("Pause/Unpause iteration: %d", l + 1);
/* Reset callback counters */
_audio_testCallbackCounter = 0;
_audio_testCallbackLength = 0;
/* Un-pause audio to start playing (maybe multiple times) */
pause_on = 0;
for (k = 0; k <= j; k++) {
SDL_PauseAudio(pause_on);
SDLTest_AssertPass("Call to SDL_PauseAudio(%d), call %d", pause_on, k + 1);
}
/* Wait for callback */
totalDelay = 0;
do {
SDL_Delay(10);
totalDelay += 10;
} while (_audio_testCallbackCounter == 0 && totalDelay < 1000);
SDLTest_AssertCheck(_audio_testCallbackCounter > 0, "Verify callback counter; expected: >0 got: %d", _audio_testCallbackCounter);
SDLTest_AssertCheck(_audio_testCallbackLength > 0, "Verify callback length; expected: >0 got: %d", _audio_testCallbackLength);
/* Pause audio to stop playing (maybe multiple times) */
for (k = 0; k <= j; k++) {
pause_on = (k == 0) ? 1 : SDLTest_RandomIntegerInRange(99, 9999);
SDL_PauseAudio(pause_on);
SDLTest_AssertPass("Call to SDL_PauseAudio(%d), call %d", pause_on, k + 1);
}
/* Ensure callback is not called again */
originalCounter = _audio_testCallbackCounter;
SDL_Delay(totalDelay + 10);
SDLTest_AssertCheck(originalCounter == _audio_testCallbackCounter, "Verify callback counter; expected: %d, got: %d", originalCounter, _audio_testCallbackCounter);
}
/* Call Close */
SDL_CloseAudio();
SDLTest_AssertPass("Call to SDL_CloseAudio()");
/* Call Quit */
SDL_AudioQuit();
SDLTest_AssertPass("Call to SDL_AudioQuit()");
} /* spec loop */
} /* driver loop */
/* Restart audio again */
_audioSetUp(NULL);
return TEST_COMPLETED;
}
/**
* \brief Enumerate and name available audio devices (output and capture).
*
* \sa https://wiki.libsdl.org/SDL_GetNumAudioDevices
* \sa https://wiki.libsdl.org/SDL_GetAudioDeviceName
*/
int audio_enumerateAndNameAudioDevices()
{
int t, tt;
int i, n, nn;
const char *name, *nameAgain;
/* Iterate over types: t=0 output device, t=1 input/capture device */
for (t = 0; t < 2; t++) {
/* Get number of devices. */
n = SDL_GetNumAudioDevices(t);
SDLTest_AssertPass("Call to SDL_GetNumAudioDevices(%i)", t);
SDLTest_Log("Number of %s devices < 0, reported as %i", (t) ? "capture" : "output", n);
SDLTest_AssertCheck(n >= 0, "Validate result is >= 0, got: %i", n);
/* Variation of non-zero type */
if (t == 1) {
tt = t + SDLTest_RandomIntegerInRange(1, 10);
nn = SDL_GetNumAudioDevices(tt);
SDLTest_AssertCheck(n == nn, "Verify result from SDL_GetNumAudioDevices(%i), expected same number of audio devices %i, got %i", tt, n, nn);
nn = SDL_GetNumAudioDevices(-tt);
SDLTest_AssertCheck(n == nn, "Verify result from SDL_GetNumAudioDevices(%i), expected same number of audio devices %i, got %i", -tt, n, nn);
}
/* List devices. */
if (n > 0) {
for (i = 0; i < n; i++) {
name = SDL_GetAudioDeviceName(i, t);
SDLTest_AssertPass("Call to SDL_GetAudioDeviceName(%i, %i)", i, t);
SDLTest_AssertCheck(name != NULL, "Verify result from SDL_GetAudioDeviceName(%i, %i) is not NULL", i, t);
if (name != NULL) {
SDLTest_AssertCheck(name[0] != '\0', "verify result from SDL_GetAudioDeviceName(%i, %i) is not empty, got: '%s'", i, t, name);
if (t == 1) {
/* Also try non-zero type */
tt = t + SDLTest_RandomIntegerInRange(1, 10);
nameAgain = SDL_GetAudioDeviceName(i, tt);
SDLTest_AssertCheck(nameAgain != NULL, "Verify result from SDL_GetAudioDeviceName(%i, %i) is not NULL", i, tt);
if (nameAgain != NULL) {
SDLTest_AssertCheck(nameAgain[0] != '\0', "Verify result from SDL_GetAudioDeviceName(%i, %i) is not empty, got: '%s'", i, tt, nameAgain);
SDLTest_AssertCheck(SDL_strcmp(name, nameAgain) == 0,
"Verify SDL_GetAudioDeviceName(%i, %i) and SDL_GetAudioDeviceName(%i %i) return the same string",
i, t, i, tt);
}
}
}
}
}
}
return TEST_COMPLETED;
}
/**
* \brief Negative tests around enumeration and naming of audio devices.
*
* \sa https://wiki.libsdl.org/SDL_GetNumAudioDevices
* \sa https://wiki.libsdl.org/SDL_GetAudioDeviceName
*/
int audio_enumerateAndNameAudioDevicesNegativeTests()
{
int t;
int i, j, no, nc;
const char *name;
/* Get number of devices. */
no = SDL_GetNumAudioDevices(0);
SDLTest_AssertPass("Call to SDL_GetNumAudioDevices(0)");
nc = SDL_GetNumAudioDevices(1);
SDLTest_AssertPass("Call to SDL_GetNumAudioDevices(1)");
/* Invalid device index when getting name */
for (t = 0; t < 2; t++) {
/* Negative device index */
i = SDLTest_RandomIntegerInRange(-10, -1);
name = SDL_GetAudioDeviceName(i, t);
SDLTest_AssertPass("Call to SDL_GetAudioDeviceName(%i, %i)", i, t);
SDLTest_AssertCheck(name == NULL, "Check SDL_GetAudioDeviceName(%i, %i) result NULL, expected NULL, got: %s", i, t, (name == NULL) ? "NULL" : name);
/* Device index past range */
for (j = 0; j < 3; j++) {
i = (t) ? nc + j : no + j;
name = SDL_GetAudioDeviceName(i, t);
SDLTest_AssertPass("Call to SDL_GetAudioDeviceName(%i, %i)", i, t);
SDLTest_AssertCheck(name == NULL, "Check SDL_GetAudioDeviceName(%i, %i) result, expected: NULL, got: %s", i, t, (name == NULL) ? "NULL" : name);
}
/* Capture index past capture range but within output range */
if ((no > 0) && (no > nc) && (t == 1)) {
i = no - 1;
name = SDL_GetAudioDeviceName(i, t);
SDLTest_AssertPass("Call to SDL_GetAudioDeviceName(%i, %i)", i, t);
SDLTest_AssertCheck(name == NULL, "Check SDL_GetAudioDeviceName(%i, %i) result, expected: NULL, got: %s", i, t, (name == NULL) ? "NULL" : name);
}
}
return TEST_COMPLETED;
}
/**
* \brief Checks available audio driver names.
*
* \sa https://wiki.libsdl.org/SDL_GetNumAudioDrivers
* \sa https://wiki.libsdl.org/SDL_GetAudioDriver
*/
int audio_printAudioDrivers()
{
int i, n;
const char *name;
/* Get number of drivers */
n = SDL_GetNumAudioDrivers();
SDLTest_AssertPass("Call to SDL_GetNumAudioDrivers()");
SDLTest_AssertCheck(n >= 0, "Verify number of audio drivers >= 0, got: %i", n);
/* List drivers. */
if (n > 0) {
for (i = 0; i < n; i++) {
name = SDL_GetAudioDriver(i);
SDLTest_AssertPass("Call to SDL_GetAudioDriver(%i)", i);
SDLTest_AssertCheck(name != NULL, "Verify returned name is not NULL");
if (name != NULL) {
SDLTest_AssertCheck(name[0] != '\0', "Verify returned name is not empty, got: '%s'", name);
}
}
}
return TEST_COMPLETED;
}
/**
* \brief Checks current audio driver name with initialized audio.
*
* \sa https://wiki.libsdl.org/SDL_GetCurrentAudioDriver
*/
int audio_printCurrentAudioDriver()
{
/* Check current audio driver */
const char *name = SDL_GetCurrentAudioDriver();
SDLTest_AssertPass("Call to SDL_GetCurrentAudioDriver()");
SDLTest_AssertCheck(name != NULL, "Verify returned name is not NULL");
if (name != NULL) {
SDLTest_AssertCheck(name[0] != '\0', "Verify returned name is not empty, got: '%s'", name);
}
return TEST_COMPLETED;
}
/* Definition of all formats, channels, and frequencies used to test audio conversions */
const int _numAudioFormats = 18;
SDL_AudioFormat _audioFormats[] = { AUDIO_S8, AUDIO_U8, AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_S16SYS, AUDIO_S16, AUDIO_U16LSB,
AUDIO_U16MSB, AUDIO_U16SYS, AUDIO_U16, AUDIO_S32LSB, AUDIO_S32MSB, AUDIO_S32SYS, AUDIO_S32,
AUDIO_F32LSB, AUDIO_F32MSB, AUDIO_F32SYS, AUDIO_F32 };
const char *_audioFormatsVerbose[] = { "AUDIO_S8", "AUDIO_U8", "AUDIO_S16LSB", "AUDIO_S16MSB", "AUDIO_S16SYS", "AUDIO_S16", "AUDIO_U16LSB",
"AUDIO_U16MSB", "AUDIO_U16SYS", "AUDIO_U16", "AUDIO_S32LSB", "AUDIO_S32MSB", "AUDIO_S32SYS", "AUDIO_S32",
"AUDIO_F32LSB", "AUDIO_F32MSB", "AUDIO_F32SYS", "AUDIO_F32" };
const int _numAudioChannels = 4;
Uint8 _audioChannels[] = { 1, 2, 4, 6 };
const int _numAudioFrequencies = 4;
int _audioFrequencies[] = { 11025, 22050, 44100, 48000 };
/**
* \brief Builds various audio conversion structures
*
* \sa https://wiki.libsdl.org/SDL_BuildAudioCVT
*/
int audio_buildAudioCVT()
{
int result;
SDL_AudioCVT cvt;
SDL_AudioSpec spec1;
SDL_AudioSpec spec2;
int i, ii, j, jj, k, kk;
/* No conversion needed */
spec1.format = AUDIO_S16LSB;
spec1.channels = 2;
spec1.freq = 22050;
result = SDL_BuildAudioCVT(&cvt, spec1.format, spec1.channels, spec1.freq,
spec1.format, spec1.channels, spec1.freq);
SDLTest_AssertPass("Call to SDL_BuildAudioCVT(spec1 ==> spec1)");
SDLTest_AssertCheck(result == 0, "Verify result value; expected: 0, got: %i", result);
/* Typical conversion */
spec1.format = AUDIO_S8;
spec1.channels = 1;
spec1.freq = 22050;
spec2.format = AUDIO_S16LSB;
spec2.channels = 2;
spec2.freq = 44100;
result = SDL_BuildAudioCVT(&cvt, spec1.format, spec1.channels, spec1.freq,
spec2.format, spec2.channels, spec2.freq);
SDLTest_AssertPass("Call to SDL_BuildAudioCVT(spec1 ==> spec2)");
SDLTest_AssertCheck(result == 1, "Verify result value; expected: 1, got: %i", result);
/* All source conversions with random conversion targets, allow 'null' conversions */
for (i = 0; i < _numAudioFormats; i++) {
for (j = 0; j < _numAudioChannels; j++) {
for (k = 0; k < _numAudioFrequencies; k++) {
spec1.format = _audioFormats[i];
spec1.channels = _audioChannels[j];
spec1.freq = _audioFrequencies[k];
ii = SDLTest_RandomIntegerInRange(0, _numAudioFormats - 1);
jj = SDLTest_RandomIntegerInRange(0, _numAudioChannels - 1);
kk = SDLTest_RandomIntegerInRange(0, _numAudioFrequencies - 1);
spec2.format = _audioFormats[ii];
spec2.channels = _audioChannels[jj];
spec2.freq = _audioFrequencies[kk];
result = SDL_BuildAudioCVT(&cvt, spec1.format, spec1.channels, spec1.freq,
spec2.format, spec2.channels, spec2.freq);
SDLTest_AssertPass("Call to SDL_BuildAudioCVT(format[%i]=%s(%i),channels[%i]=%i,freq[%i]=%i ==> format[%i]=%s(%i),channels[%i]=%i,freq[%i]=%i)",
i, _audioFormatsVerbose[i], spec1.format, j, spec1.channels, k, spec1.freq, ii, _audioFormatsVerbose[ii], spec2.format, jj, spec2.channels, kk, spec2.freq);
SDLTest_AssertCheck(result == 0 || result == 1, "Verify result value; expected: 0 or 1, got: %i", result);
if (result < 0) {
SDLTest_LogError("%s", SDL_GetError());
} else {
SDLTest_AssertCheck(cvt.len_mult > 0, "Verify that cvt.len_mult value; expected: >0, got: %i", cvt.len_mult);
}
}
}
}
return TEST_COMPLETED;
}
/**
* \brief Checkes calls with invalid input to SDL_BuildAudioCVT
*
* \sa https://wiki.libsdl.org/SDL_BuildAudioCVT
*/
int audio_buildAudioCVTNegative()
{
const char *expectedError = "Parameter 'cvt' is invalid";
const char *error;
int result;
SDL_AudioCVT cvt;
SDL_AudioSpec spec1;
SDL_AudioSpec spec2;
int i;
char message[256];
/* Valid format */
spec1.format = AUDIO_S8;
spec1.channels = 1;
spec1.freq = 22050;
spec2.format = AUDIO_S16LSB;
spec2.channels = 2;
spec2.freq = 44100;
SDL_ClearError();
SDLTest_AssertPass("Call to SDL_ClearError()");
/* NULL input for CVT buffer */
result = SDL_BuildAudioCVT((SDL_AudioCVT *)NULL, spec1.format, spec1.channels, spec1.freq,
spec2.format, spec2.channels, spec2.freq);
SDLTest_AssertPass("Call to SDL_BuildAudioCVT(NULL,...)");
SDLTest_AssertCheck(result == -1, "Verify result value; expected: -1, got: %i", result);
error = SDL_GetError();
SDLTest_AssertPass("Call to SDL_GetError()");
SDLTest_AssertCheck(error != NULL, "Validate that error message was not NULL");
if (error != NULL) {
SDLTest_AssertCheck(SDL_strcmp(error, expectedError) == 0,
"Validate error message, expected: '%s', got: '%s'", expectedError, error);
}
/* Invalid conversions */
for (i = 1; i < 64; i++) {
/* Valid format to start with */
spec1.format = AUDIO_S8;
spec1.channels = 1;
spec1.freq = 22050;
spec2.format = AUDIO_S16LSB;
spec2.channels = 2;
spec2.freq = 44100;
SDL_ClearError();
SDLTest_AssertPass("Call to SDL_ClearError()");
/* Set various invalid format inputs */
SDL_strlcpy(message, "Invalid: ", 256);
if (i & 1) {
SDL_strlcat(message, " spec1.format", 256);
spec1.format = 0;
}
if (i & 2) {
SDL_strlcat(message, " spec1.channels", 256);
spec1.channels = 0;
}
if (i & 4) {
SDL_strlcat(message, " spec1.freq", 256);
spec1.freq = 0;
}
if (i & 8) {
SDL_strlcat(message, " spec2.format", 256);
spec2.format = 0;
}
if (i & 16) {
SDL_strlcat(message, " spec2.channels", 256);
spec2.channels = 0;
}
if (i & 32) {
SDL_strlcat(message, " spec2.freq", 256);
spec2.freq = 0;
}
SDLTest_Log("%s", message);
result = SDL_BuildAudioCVT(&cvt, spec1.format, spec1.channels, spec1.freq,
spec2.format, spec2.channels, spec2.freq);
SDLTest_AssertPass("Call to SDL_BuildAudioCVT(spec1 ==> spec2)");
SDLTest_AssertCheck(result == -1, "Verify result value; expected: -1, got: %i", result);
error = SDL_GetError();
SDLTest_AssertPass("Call to SDL_GetError()");
SDLTest_AssertCheck(error != NULL && error[0] != '\0', "Validate that error message was not NULL or empty");
}
SDL_ClearError();
SDLTest_AssertPass("Call to SDL_ClearError()");
return TEST_COMPLETED;
}
/**
* \brief Checks current audio status.
*
* \sa https://wiki.libsdl.org/SDL_GetAudioStatus
*/
int audio_getAudioStatus()
{
SDL_AudioStatus result;
/* Check current audio status */
result = SDL_GetAudioStatus();
SDLTest_AssertPass("Call to SDL_GetAudioStatus()");
SDLTest_AssertCheck(result == SDL_AUDIO_STOPPED || result == SDL_AUDIO_PLAYING || result == SDL_AUDIO_PAUSED,
"Verify returned value; expected: STOPPED (%i) | PLAYING (%i) | PAUSED (%i), got: %i",
SDL_AUDIO_STOPPED, SDL_AUDIO_PLAYING, SDL_AUDIO_PAUSED, result);
return TEST_COMPLETED;
}
/**
* \brief Opens, checks current audio status, and closes a device.
*
* \sa https://wiki.libsdl.org/SDL_GetAudioStatus
*/
int audio_openCloseAndGetAudioStatus()
{
SDL_AudioStatus result;
int i;
int count;
const char *device;
SDL_AudioDeviceID id;
SDL_AudioSpec desired, obtained;
/* Get number of devices. */
count = SDL_GetNumAudioDevices(0);
SDLTest_AssertPass("Call to SDL_GetNumAudioDevices(0)");
if (count > 0) {
for (i = 0; i < count; i++) {
/* Get device name */
device = SDL_GetAudioDeviceName(i, 0);
SDLTest_AssertPass("SDL_GetAudioDeviceName(%i,0)", i);
SDLTest_AssertCheck(device != NULL, "Validate device name is not NULL; got: %s", (device != NULL) ? device : "NULL");
if (device == NULL) {
return TEST_ABORTED;
}
/* Set standard desired spec */
desired.freq = 22050;
desired.format = AUDIO_S16SYS;
desired.channels = 2;
desired.samples = 4096;
desired.callback = _audio_testCallback;
desired.userdata = NULL;
/* Open device */
id = SDL_OpenAudioDevice(device, 0, &desired, &obtained, SDL_AUDIO_ALLOW_ANY_CHANGE);
SDLTest_AssertPass("SDL_OpenAudioDevice('%s',...)", device);
SDLTest_AssertCheck(id > 1, "Validate device ID; expected: >=2, got: %" SDL_PRIu32, id);
if (id > 1) {
/* Check device audio status */
result = SDL_GetAudioDeviceStatus(id);
SDLTest_AssertPass("Call to SDL_GetAudioDeviceStatus()");
SDLTest_AssertCheck(result == SDL_AUDIO_STOPPED || result == SDL_AUDIO_PLAYING || result == SDL_AUDIO_PAUSED,
"Verify returned value; expected: STOPPED (%i) | PLAYING (%i) | PAUSED (%i), got: %i",
SDL_AUDIO_STOPPED, SDL_AUDIO_PLAYING, SDL_AUDIO_PAUSED, result);
/* Close device again */
SDL_CloseAudioDevice(id);
SDLTest_AssertPass("Call to SDL_CloseAudioDevice()");
}
}
} else {
SDLTest_Log("No devices to test with");
}
return TEST_COMPLETED;
}
/**
* \brief Locks and unlocks open audio device.
*
* \sa https://wiki.libsdl.org/SDL_LockAudioDevice
* \sa https://wiki.libsdl.org/SDL_UnlockAudioDevice
*/
int audio_lockUnlockOpenAudioDevice()
{
int i;
int count;
const char *device;
SDL_AudioDeviceID id;
SDL_AudioSpec desired, obtained;
/* Get number of devices. */
count = SDL_GetNumAudioDevices(0);
SDLTest_AssertPass("Call to SDL_GetNumAudioDevices(0)");
if (count > 0) {
for (i = 0; i < count; i++) {
/* Get device name */
device = SDL_GetAudioDeviceName(i, 0);
SDLTest_AssertPass("SDL_GetAudioDeviceName(%i,0)", i);
SDLTest_AssertCheck(device != NULL, "Validate device name is not NULL; got: %s", (device != NULL) ? device : "NULL");
if (device == NULL) {
return TEST_ABORTED;
}
/* Set standard desired spec */
desired.freq = 22050;
desired.format = AUDIO_S16SYS;
desired.channels = 2;
desired.samples = 4096;
desired.callback = _audio_testCallback;
desired.userdata = NULL;
/* Open device */
id = SDL_OpenAudioDevice(device, 0, &desired, &obtained, SDL_AUDIO_ALLOW_ANY_CHANGE);
SDLTest_AssertPass("SDL_OpenAudioDevice('%s',...)", device);
SDLTest_AssertCheck(id > 1, "Validate device ID; expected: >=2, got: %" SDL_PRIu32, id);
if (id > 1) {
/* Lock to protect callback */
SDL_LockAudioDevice(id);
SDLTest_AssertPass("SDL_LockAudioDevice(%" SDL_PRIu32 ")", id);
/* Simulate callback processing */
SDL_Delay(10);
SDLTest_Log("Simulate callback processing - delay");
/* Unlock again */
SDL_UnlockAudioDevice(id);
SDLTest_AssertPass("SDL_UnlockAudioDevice(%" SDL_PRIu32 ")", id);
/* Close device again */
SDL_CloseAudioDevice(id);
SDLTest_AssertPass("Call to SDL_CloseAudioDevice()");
}
}
} else {
SDLTest_Log("No devices to test with");
}
return TEST_COMPLETED;
}
/**
* \brief Convert audio using various conversion structures
*
* \sa https://wiki.libsdl.org/SDL_BuildAudioCVT
* \sa https://wiki.libsdl.org/SDL_ConvertAudio
*/
int audio_convertAudio()
{
int result;
SDL_AudioCVT cvt;
SDL_AudioSpec spec1;
SDL_AudioSpec spec2;
int c;
char message[128];
int i, ii, j, jj, k, kk, l, ll;
/* Iterate over bitmask that determines which parameters are modified in the conversion */
for (c = 1; c < 8; c++) {
SDL_strlcpy(message, "Changing:", 128);
if (c & 1) {
SDL_strlcat(message, " Format", 128);
}
if (c & 2) {
SDL_strlcat(message, " Channels", 128);
}
if (c & 4) {
SDL_strlcat(message, " Frequencies", 128);
}
SDLTest_Log("%s", message);
/* All source conversions with random conversion targets */
for (i = 0; i < _numAudioFormats; i++) {
for (j = 0; j < _numAudioChannels; j++) {
for (k = 0; k < _numAudioFrequencies; k++) {
spec1.format = _audioFormats[i];
spec1.channels = _audioChannels[j];
spec1.freq = _audioFrequencies[k];
/* Ensure we have a different target format */
do {
if (c & 1) {
ii = SDLTest_RandomIntegerInRange(0, _numAudioFormats - 1);
} else {
ii = 1;
}
if (c & 2) {
jj = SDLTest_RandomIntegerInRange(0, _numAudioChannels - 1);
} else {
jj = j;
}
if (c & 4) {
kk = SDLTest_RandomIntegerInRange(0, _numAudioFrequencies - 1);
} else {
kk = k;
}
} while ((i == ii) && (j == jj) && (k == kk));
spec2.format = _audioFormats[ii];
spec2.channels = _audioChannels[jj];
spec2.freq = _audioFrequencies[kk];
result = SDL_BuildAudioCVT(&cvt, spec1.format, spec1.channels, spec1.freq,
spec2.format, spec2.channels, spec2.freq);
SDLTest_AssertPass("Call to SDL_BuildAudioCVT(format[%i]=%s(%i),channels[%i]=%i,freq[%i]=%i ==> format[%i]=%s(%i),channels[%i]=%i,freq[%i]=%i)",
i, _audioFormatsVerbose[i], spec1.format, j, spec1.channels, k, spec1.freq, ii, _audioFormatsVerbose[ii], spec2.format, jj, spec2.channels, kk, spec2.freq);
SDLTest_AssertCheck(result == 1, "Verify result value; expected: 1, got: %i", result);
if (result != 1) {
SDLTest_LogError("%s", SDL_GetError());
} else {
SDLTest_AssertCheck(cvt.len_mult > 0, "Verify that cvt.len_mult value; expected: >0, got: %i", cvt.len_mult);
if (cvt.len_mult < 1) {
return TEST_ABORTED;
}
/* Create some random data to convert */
l = 64;
ll = l * cvt.len_mult;
SDLTest_Log("Creating dummy sample buffer of %i length (%i bytes)", l, ll);
cvt.len = l;
cvt.buf = (Uint8 *)SDL_malloc(ll);
SDLTest_AssertCheck(cvt.buf != NULL, "Check data buffer to convert is not NULL");
if (cvt.buf == NULL) {
return TEST_ABORTED;
}
/* Convert the data */
result = SDL_ConvertAudio(&cvt);
SDLTest_AssertPass("Call to SDL_ConvertAudio()");
SDLTest_AssertCheck(result == 0, "Verify result value; expected: 0; got: %i", result);
SDLTest_AssertCheck(cvt.buf != NULL, "Verify conversion buffer is not NULL");
SDLTest_AssertCheck(cvt.len_ratio > 0.0, "Verify conversion length ratio; expected: >0; got: %f", cvt.len_ratio);
/* Free converted buffer */
SDL_free(cvt.buf);
cvt.buf = NULL;
}
}
}
}
}
return TEST_COMPLETED;
}
/**
* \brief Opens, checks current connected status, and closes a device.
*
* \sa https://wiki.libsdl.org/SDL_AudioDeviceConnected
*/
int audio_openCloseAudioDeviceConnected()
{
int result = -1;
int i;
int count;
const char *device;
SDL_AudioDeviceID id;
SDL_AudioSpec desired, obtained;
/* Get number of devices. */
count = SDL_GetNumAudioDevices(0);
SDLTest_AssertPass("Call to SDL_GetNumAudioDevices(0)");
if (count > 0) {
for (i = 0; i < count; i++) {
/* Get device name */
device = SDL_GetAudioDeviceName(i, 0);
SDLTest_AssertPass("SDL_GetAudioDeviceName(%i,0)", i);
SDLTest_AssertCheck(device != NULL, "Validate device name is not NULL; got: %s", (device != NULL) ? device : "NULL");
if (device == NULL) {
return TEST_ABORTED;
}
/* Set standard desired spec */
desired.freq = 22050;
desired.format = AUDIO_S16SYS;
desired.channels = 2;
desired.samples = 4096;
desired.callback = _audio_testCallback;
desired.userdata = NULL;
/* Open device */
id = SDL_OpenAudioDevice(device, 0, &desired, &obtained, SDL_AUDIO_ALLOW_ANY_CHANGE);
SDLTest_AssertPass("SDL_OpenAudioDevice('%s',...)", device);
SDLTest_AssertCheck(id > 1, "Validate device ID; expected: >1, got: %" SDL_PRIu32, id);
if (id > 1) {
/* TODO: enable test code when function is available in SDL2 */
#ifdef AUDIODEVICECONNECTED_DEFINED
/* Get connected status */
result = SDL_AudioDeviceConnected(id);
SDLTest_AssertPass("Call to SDL_AudioDeviceConnected()");
#endif
SDLTest_AssertCheck(result == 1, "Verify returned value; expected: 1; got: %i", result);
/* Close device again */
SDL_CloseAudioDevice(id);
SDLTest_AssertPass("Call to SDL_CloseAudioDevice()");
}
}
} else {
SDLTest_Log("No devices to test with");
}
return TEST_COMPLETED;
}
static double sine_wave_sample(const Sint64 idx, const Sint64 rate, const Sint64 freq, const double phase)
{
/* Using integer modulo to avoid precision loss caused by large floating
* point numbers. Sint64 is needed for the large integer multiplication.
* The integers are assumed to be non-negative so that modulo is always
* non-negative.
* sin(i / rate * freq * 2 * M_PI + phase)
* = sin(mod(i / rate * freq, 1) * 2 * M_PI + phase)
* = sin(mod(i * freq, rate) / rate * 2 * M_PI + phase) */
return SDL_sin(((double) (idx * freq % rate)) / ((double) rate) * (M_PI * 2) + phase);
}
/**
* \brief Check signal-to-noise ratio and maximum error of audio resampling.
*
* \sa https://wiki.libsdl.org/SDL_BuildAudioCVT
* \sa https://wiki.libsdl.org/SDL_ConvertAudio
*/
int audio_resampleLoss()
{
/* Note: always test long input time (>= 5s from experience) in some test
* cases because an improper implementation may suffer from low resampling
* precision with long input due to e.g. doing subtraction with large floats. */
struct test_spec_t {
int time;
int freq;
double phase;
int rate_in;
int rate_out;
double signal_to_noise;
double max_error;
} test_specs[] = {
{ 50, 440, 0, 44100, 48000, 60, 0.0025 },
{ 50, 5000, M_PI / 2, 20000, 10000, 65, 0.0010 },
{ 0 }
};
int spec_idx = 0;
for (spec_idx = 0; test_specs[spec_idx].time > 0; ++spec_idx) {
const struct test_spec_t *spec = &test_specs[spec_idx];
const int frames_in = spec->time * spec->rate_in;
const int frames_target = spec->time * spec->rate_out;
const int len_in = frames_in * (int)sizeof(float);
const int len_target = frames_target * (int)sizeof(float);
Uint64 tick_beg = 0;
Uint64 tick_end = 0;
SDL_AudioCVT cvt;
int i = 0;
int ret = 0;
double max_error = 0;
double sum_squared_error = 0;
double sum_squared_value = 0;
double signal_to_noise = 0;
SDLTest_AssertPass("Test resampling of %i s %i Hz %f phase sine wave from sampling rate of %i Hz to %i Hz",
spec->time, spec->freq, spec->phase, spec->rate_in, spec->rate_out);
ret = SDL_BuildAudioCVT(&cvt, AUDIO_F32, 1, spec->rate_in, AUDIO_F32, 1, spec->rate_out);
SDLTest_AssertPass("Call to SDL_BuildAudioCVT(&cvt, AUDIO_F32, 1, %i, AUDIO_F32, 1, %i)", spec->rate_in, spec->rate_out);
SDLTest_AssertCheck(ret == 1, "Expected SDL_BuildAudioCVT to succeed and conversion to be needed.");
if (ret != 1) {
return TEST_ABORTED;
}
cvt.buf = (Uint8 *)SDL_malloc(len_in * cvt.len_mult);
SDLTest_AssertCheck(cvt.buf != NULL, "Expected input buffer to be created.");
if (cvt.buf == NULL) {
return TEST_ABORTED;
}
cvt.len = len_in;
for (i = 0; i < frames_in; ++i) {
*(((float *) cvt.buf) + i) = (float)sine_wave_sample(i, spec->rate_in, spec->freq, spec->phase);
}
tick_beg = SDL_GetPerformanceCounter();
ret = SDL_ConvertAudio(&cvt);
tick_end = SDL_GetPerformanceCounter();
SDLTest_AssertPass("Call to SDL_ConvertAudio(&cvt)");
SDLTest_AssertCheck(ret == 0, "Expected SDL_ConvertAudio to succeed.");
SDLTest_AssertCheck(cvt.len_cvt == len_target, "Expected output length %i, got %i.", len_target, cvt.len_cvt);
if (ret != 0 || cvt.len_cvt != len_target) {
SDL_free(cvt.buf);
return TEST_ABORTED;
}
SDLTest_Log("Resampling used %f seconds.", ((double) (tick_end - tick_beg)) / SDL_GetPerformanceFrequency());
for (i = 0; i < frames_target; ++i) {
const float output = *(((float *) cvt.buf) + i);
const double target = sine_wave_sample(i, spec->rate_out, spec->freq, spec->phase);
const double error = SDL_fabs(target - output);
max_error = SDL_max(max_error, error);
sum_squared_error += error * error;
sum_squared_value += target * target;
}
SDL_free(cvt.buf);
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 >= spec->signal_to_noise, "Conversion signal-to-noise ratio %f dB should be no less than %f dB.",
signal_to_noise, spec->signal_to_noise);
SDLTest_AssertCheck(max_error <= spec->max_error, "Maximum conversion error %f should be no more than %f.",
max_error, spec->max_error);
}
return TEST_COMPLETED;
}
/* ================= Test Case References ================== */
/* Audio test cases */
static const SDLTest_TestCaseReference audioTest1 = {
(SDLTest_TestCaseFp)audio_enumerateAndNameAudioDevices, "audio_enumerateAndNameAudioDevices", "Enumerate and name available audio devices (output and capture)", TEST_ENABLED
};
static const SDLTest_TestCaseReference audioTest2 = {
(SDLTest_TestCaseFp)audio_enumerateAndNameAudioDevicesNegativeTests, "audio_enumerateAndNameAudioDevicesNegativeTests", "Negative tests around enumeration and naming of audio devices.", TEST_ENABLED
};
static const SDLTest_TestCaseReference audioTest3 = {
(SDLTest_TestCaseFp)audio_printAudioDrivers, "audio_printAudioDrivers", "Checks available audio driver names.", TEST_ENABLED
};
static const SDLTest_TestCaseReference audioTest4 = {
(SDLTest_TestCaseFp)audio_printCurrentAudioDriver, "audio_printCurrentAudioDriver", "Checks current audio driver name with initialized audio.", TEST_ENABLED
};
static const SDLTest_TestCaseReference audioTest5 = {
(SDLTest_TestCaseFp)audio_buildAudioCVT, "audio_buildAudioCVT", "Builds various audio conversion structures.", TEST_ENABLED
};
static const SDLTest_TestCaseReference audioTest6 = {
(SDLTest_TestCaseFp)audio_buildAudioCVTNegative, "audio_buildAudioCVTNegative", "Checks calls with invalid input to SDL_BuildAudioCVT", TEST_ENABLED
};
static const SDLTest_TestCaseReference audioTest7 = {
(SDLTest_TestCaseFp)audio_getAudioStatus, "audio_getAudioStatus", "Checks current audio status.", TEST_ENABLED
};
static const SDLTest_TestCaseReference audioTest8 = {
(SDLTest_TestCaseFp)audio_openCloseAndGetAudioStatus, "audio_openCloseAndGetAudioStatus", "Opens and closes audio device and get audio status.", TEST_ENABLED
};
static const SDLTest_TestCaseReference audioTest9 = {
(SDLTest_TestCaseFp)audio_lockUnlockOpenAudioDevice, "audio_lockUnlockOpenAudioDevice", "Locks and unlocks an open audio device.", TEST_ENABLED
};
/* TODO: enable test when SDL_ConvertAudio segfaults on cygwin have been fixed. */
/* For debugging, test case can be run manually using --filter audio_convertAudio */
static const SDLTest_TestCaseReference audioTest10 = {
(SDLTest_TestCaseFp)audio_convertAudio, "audio_convertAudio", "Convert audio using available formats.", TEST_DISABLED
};
/* TODO: enable test when SDL_AudioDeviceConnected has been implemented. */
static const SDLTest_TestCaseReference audioTest11 = {
(SDLTest_TestCaseFp)audio_openCloseAudioDeviceConnected, "audio_openCloseAudioDeviceConnected", "Opens and closes audio device and get connected status.", TEST_DISABLED
};
static const SDLTest_TestCaseReference audioTest12 = {
(SDLTest_TestCaseFp)audio_quitInitAudioSubSystem, "audio_quitInitAudioSubSystem", "Quit and re-init audio subsystem.", TEST_ENABLED
};
static const SDLTest_TestCaseReference audioTest13 = {
(SDLTest_TestCaseFp)audio_initQuitAudio, "audio_initQuitAudio", "Init and quit audio drivers directly.", TEST_ENABLED
};
static const SDLTest_TestCaseReference audioTest14 = {
(SDLTest_TestCaseFp)audio_initOpenCloseQuitAudio, "audio_initOpenCloseQuitAudio", "Cycle through init, open, close and quit with various audio specs.", TEST_ENABLED
};
static const SDLTest_TestCaseReference audioTest15 = {
(SDLTest_TestCaseFp)audio_pauseUnpauseAudio, "audio_pauseUnpauseAudio", "Pause and Unpause audio for various audio specs while testing callback.", TEST_ENABLED
};
static const SDLTest_TestCaseReference audioTest16 = {
(SDLTest_TestCaseFp)audio_resampleLoss, "audio_resampleLoss", "Check signal-to-noise ratio and maximum error of audio resampling.", 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, NULL
};
/* Audio test suite (global) */
SDLTest_TestSuiteReference audioTestSuite = {
"Audio",
_audioSetUp,
audioTests,
_audioTearDown
};