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Add SDL_GetAudioDeviceSpec. 

This API is supported by pipewire, pulseaudio, coreaudio, wasapi, and disk.
This commit is contained in:
Ethan Lee 2021-02-27 17:37:25 -05:00 committed by Sam Lantinga
parent 00fabdde18
commit 67e8522d31
19 changed files with 256 additions and 67 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
include/SDL_audio.h
View File

@ -359,6 +359,25 @@ extern DECLSPEC int SDLCALL SDL_GetNumAudioDevices(int iscapture);
extern DECLSPEC const char *SDLCALL SDL_GetAudioDeviceName(int index,
int iscapture);
/**
* Get the audio format of a specific audio device.
* Must be a value between 0 and (number of audio devices-1).
* Only valid after a successfully initializing the audio subsystem.
* The values returned by this function reflect the latest call to
* SDL_GetNumAudioDevices(); recall that function to redetect available
* hardware.
*
* The spec will be filled with the sample rate, sample format, and channel
* count. All other values in the structure are filled with 0. When the
* supported struct members are 0, SDL was unable to get the property from the
* backend.
*
* \return 0 on success, nonzero on error
*/
extern DECLSPEC int SDLCALL SDL_GetAudioDeviceSpec(int index,
int iscapture,
SDL_AudioSpec *spec);
/**
* Open a specific audio device. Passing in a device name of NULL requests

61
src/audio/SDL_audio.c
View File

@ -223,9 +223,9 @@ SDL_AudioDetectDevices_Default(void)
SDL_assert(current_audio.impl.OnlyHasDefaultOutputDevice);
SDL_assert(current_audio.impl.OnlyHasDefaultCaptureDevice || !current_audio.impl.HasCaptureSupport);
SDL_AddAudioDevice(SDL_FALSE, DEFAULT_OUTPUT_DEVNAME, (void *) ((size_t) 0x1));
SDL_AddAudioDevice(SDL_FALSE, DEFAULT_OUTPUT_DEVNAME, NULL, (void *) ((size_t) 0x1));
if (current_audio.impl.HasCaptureSupport) {
SDL_AddAudioDevice(SDL_TRUE, DEFAULT_INPUT_DEVNAME, (void *) ((size_t) 0x2));
SDL_AddAudioDevice(SDL_TRUE, DEFAULT_INPUT_DEVNAME, NULL, (void *) ((size_t) 0x2));
}
}
@ -377,7 +377,7 @@ finish_audio_entry_points_init(void)
/* device hotplug support... */
static int
add_audio_device(const char *name, void *handle, SDL_AudioDeviceItem **devices, int *devCount)
add_audio_device(const char *name, SDL_AudioSpec *spec, void *handle, SDL_AudioDeviceItem **devices, int *devCount)
{
int retval = -1;
SDL_AudioDeviceItem *item;
@ -400,6 +400,11 @@ add_audio_device(const char *name, void *handle, SDL_AudioDeviceItem **devices,
item->dupenum = 0;
item->name = item->original_name;
if (spec != NULL) {
SDL_memcpy(&item->spec, spec, sizeof(SDL_AudioSpec));
} else {
SDL_zero(item->spec);
}
item->handle = handle;
SDL_LockMutex(current_audio.detectionLock);
@ -437,16 +442,16 @@ add_audio_device(const char *name, void *handle, SDL_AudioDeviceItem **devices,
}
static SDL_INLINE int
add_capture_device(const char *name, void *handle)
add_capture_device(const char *name, SDL_AudioSpec *spec, void *handle)
{
SDL_assert(current_audio.impl.HasCaptureSupport);
return add_audio_device(name, handle, &current_audio.inputDevices, &current_audio.inputDeviceCount);
return add_audio_device(name, spec, handle, &current_audio.inputDevices, &current_audio.inputDeviceCount);
}
static SDL_INLINE int
add_output_device(const char *name, void *handle)
add_output_device(const char *name, SDL_AudioSpec *spec, void *handle)
{
return add_audio_device(name, handle, &current_audio.outputDevices, &current_audio.outputDeviceCount);
return add_audio_device(name, spec, handle, &current_audio.outputDevices, &current_audio.outputDeviceCount);
}
static void
@ -472,9 +477,9 @@ free_device_list(SDL_AudioDeviceItem **devices, int *devCount)
/* The audio backends call this when a new device is plugged in. */
void
SDL_AddAudioDevice(const int iscapture, const char *name, void *handle)
SDL_AddAudioDevice(const int iscapture, const char *name, SDL_AudioSpec *spec, void *handle)
{
const int device_index = iscapture ? add_capture_device(name, handle) : add_output_device(name, handle);
const int device_index = iscapture ? add_capture_device(name, spec, handle) : add_output_device(name, spec, handle);
if (device_index != -1) {
/* Post the event, if desired */
if (SDL_GetEventState(SDL_AUDIODEVICEADDED) == SDL_ENABLE) {
@ -1112,6 +1117,44 @@ SDL_GetAudioDeviceName(int index, int iscapture)
}
int
SDL_GetAudioDeviceSpec(int index, int iscapture, SDL_AudioSpec *spec)
{
if (spec == NULL) {
return SDL_InvalidParamError("spec");
}
SDL_zerop(spec);
if (!SDL_WasInit(SDL_INIT_AUDIO)) {
return SDL_SetError("Audio subsystem is not initialized");
}
if (iscapture && !current_audio.impl.HasCaptureSupport) {
return SDL_SetError("No capture support");
}
if (index >= 0) {
SDL_AudioDeviceItem *item;
int i;
SDL_LockMutex(current_audio.detectionLock);
item = iscapture ? current_audio.inputDevices : current_audio.outputDevices;
i = iscapture ? current_audio.inputDeviceCount : current_audio.outputDeviceCount;
if (index < i) {
for (i--; i > index; i--, item = item->next) {
SDL_assert(item != NULL);
}
SDL_assert(item != NULL);
SDL_memcpy(spec, &item->spec, sizeof(SDL_AudioSpec));
}
SDL_UnlockMutex(current_audio.detectionLock);
}
return 0;
}
static void
close_audio_device(SDL_AudioDevice * device)
{

8
src/audio/SDL_audiodev.c
View File

@ -59,7 +59,13 @@ test_device(const int iscapture, const char *fname, int flags, int (*test) (int
static size_t dummyhandle = 0;
dummyhandle++;
SDL_assert(dummyhandle != 0);
SDL_AddAudioDevice(iscapture, fname, (void *) dummyhandle);
/* Note that spec is NULL; while we are opening the device
* endpoint here, the endpoint does not provide any mix format
* information, making this information inaccessible at
* enumeration time
*/
SDL_AddAudioDevice(iscapture, fname, NULL, (void *) dummyhandle);
}
}
}

3
src/audio/SDL_sysaudio.h
View File

@ -39,7 +39,7 @@ typedef struct SDL_AudioDevice SDL_AudioDevice;
/* Audio targets should call this as devices are added to the system (such as
a USB headset being plugged in), and should also be called for
for every device found during DetectDevices(). */
extern void SDL_AddAudioDevice(const int iscapture, const char *name, void *handle);
extern void SDL_AddAudioDevice(const int iscapture, const char *name, SDL_AudioSpec *spec, void *handle);
/* Audio targets should call this as devices are removed, so SDL can update
its list of available devices. */
@ -99,6 +99,7 @@ typedef struct SDL_AudioDeviceItem
void *handle;
char *name;
char *original_name;
SDL_AudioSpec spec;
int dupenum;
struct SDL_AudioDeviceItem *next;
} SDL_AudioDeviceItem;

6
src/audio/alsa/SDL_alsa_audio.c
View File

@ -765,7 +765,11 @@ add_device(const int iscapture, const char *name, void *hint, ALSA_Device **pSee
return;
}
SDL_AddAudioDevice(iscapture, desc, handle);
/* Note that spec is NULL, because we are required to open the device before
* acquiring the mix format, making this information inaccessible at
* enumeration time
*/
SDL_AddAudioDevice(iscapture, desc, NULL, handle);
if (hint)
free(desc);
dev->name = handle;

33
src/audio/coreaudio/SDL_coreaudio.m
View File

@ -56,7 +56,7 @@ static const AudioObjectPropertyAddress devlist_address = {
kAudioObjectPropertyElementMaster
};
typedef void (*addDevFn)(const char *name, const int iscapture, AudioDeviceID devId, void *data);
typedef void (*addDevFn)(const char *name, SDL_AudioSpec *spec, const int iscapture, AudioDeviceID devId, void *data);
typedef struct AudioDeviceList
{
@ -88,10 +88,10 @@ add_to_internal_dev_list(const int iscapture, AudioDeviceID devId)
}
static void
addToDevList(const char *name, const int iscapture, AudioDeviceID devId, void *data)
addToDevList(const char *name, SDL_AudioSpec *spec, const int iscapture, AudioDeviceID devId, void *data)
{
if (add_to_internal_dev_list(iscapture, devId)) {
SDL_AddAudioDevice(iscapture, name, (void *) ((size_t) devId));
SDL_AddAudioDevice(iscapture, name, spec, (void *) ((size_t) devId));
}
}
@ -126,17 +126,23 @@ build_device_list(int iscapture, addDevFn addfn, void *addfndata)
AudioBufferList *buflist = NULL;
int usable = 0;
CFIndex len = 0;
double sampleRate = 0;
SDL_AudioSpec spec;
const AudioObjectPropertyAddress addr = {
kAudioDevicePropertyStreamConfiguration,
iscapture ? kAudioDevicePropertyScopeInput : kAudioDevicePropertyScopeOutput,
kAudioObjectPropertyElementMaster
};
const AudioObjectPropertyAddress nameaddr = {
kAudioObjectPropertyName,
iscapture ? kAudioDevicePropertyScopeInput : kAudioDevicePropertyScopeOutput,
kAudioObjectPropertyElementMaster
};
const AudioObjectPropertyAddress freqaddr = {
kAudioDevicePropertyNominalSampleRate,
iscapture ? kAudioDevicePropertyScopeInput : kAudioDevicePropertyScopeOutput,
kAudioObjectPropertyElementMaster
};
result = AudioObjectGetPropertyDataSize(dev, &addr, 0, NULL, &size);
if (result != noErr)
@ -149,21 +155,24 @@ build_device_list(int iscapture, addDevFn addfn, void *addfndata)
result = AudioObjectGetPropertyData(dev, &addr, 0, NULL,
&size, buflist);
SDL_zero(spec);
if (result == noErr) {
UInt32 j;
for (j = 0; j < buflist->mNumberBuffers; j++) {
if (buflist->mBuffers[j].mNumberChannels > 0) {
usable = 1;
break;
}
spec.channels += buflist->mBuffers[j].mNumberChannels;
}
}
SDL_free(buflist);
if (!usable)
if (spec.channels == 0)
continue;
size = sizeof (sampleRate);
result = AudioObjectGetPropertyData(dev, &freqaddr, 0, NULL, &size, &sampleRate);
if (result == noErr) {
spec.freq = (int) sampleRate;
}
size = sizeof (CFStringRef);
result = AudioObjectGetPropertyData(dev, &nameaddr, 0, NULL, &size, &cfstr);
@ -197,7 +206,7 @@ build_device_list(int iscapture, addDevFn addfn, void *addfndata)
((iscapture) ? "capture" : "output"),
(int) i, ptr, (int) dev);
#endif
addfn(ptr, iscapture, dev, addfndata);
addfn(ptr, &spec, iscapture, dev, addfndata);
}
SDL_free(ptr); /* addfn() would have copied the string. */
}
@ -223,7 +232,7 @@ COREAUDIO_DetectDevices(void)
}
static void
build_device_change_list(const char *name, const int iscapture, AudioDeviceID devId, void *data)
build_device_change_list(const char *name, SDL_AudioSpec *spec, const int iscapture, AudioDeviceID devId, void *data)
{
AudioDeviceList **list = (AudioDeviceList **) data;
AudioDeviceList *item;
@ -235,7 +244,7 @@ build_device_change_list(const char *name, const int iscapture, AudioDeviceID de
}
add_to_internal_dev_list(iscapture, devId); /* new device, add it. */
SDL_AddAudioDevice(iscapture, name, (void *) ((size_t) devId));
SDL_AddAudioDevice(iscapture, name, spec, (void *) ((size_t) devId));
}
static void

7
src/audio/directsound/SDL_directsound.c
View File

@ -163,7 +163,12 @@ FindAllDevs(LPGUID guid, LPCWSTR desc, LPCWSTR module, LPVOID data)
if (str != NULL) {
LPGUID cpyguid = (LPGUID) SDL_malloc(sizeof (GUID));
SDL_memcpy(cpyguid, guid, sizeof (GUID));
SDL_AddAudioDevice(iscapture, str, cpyguid);
/* Note that spec is NULL, because we are required to connect to the
* device before getting the channel mask and output format, making
* this information inaccessible at enumeration time
*/
SDL_AddAudioDevice(iscapture, str, NULL, cpyguid);
SDL_free(str); /* addfn() makes a copy of this string. */
}
}

4
src/audio/disk/SDL_diskaudio.c
View File

@ -173,8 +173,8 @@ DISKAUDIO_OpenDevice(_THIS, void *handle, const char *devname, int iscapture)
static void
DISKAUDIO_DetectDevices(void)
{
SDL_AddAudioDevice(SDL_FALSE, DEFAULT_OUTPUT_DEVNAME, (void *) 0x1);
SDL_AddAudioDevice(SDL_TRUE, DEFAULT_INPUT_DEVNAME, (void *) 0x2);
SDL_AddAudioDevice(SDL_FALSE, DEFAULT_OUTPUT_DEVNAME, NULL, (void *) 0x1);
SDL_AddAudioDevice(SDL_TRUE, DEFAULT_INPUT_DEVNAME, NULL, (void *) 0x2);
}
static int

4
src/audio/os2/SDL_os2audio.c
View File

@ -160,9 +160,9 @@ static void OS2_DetectDevices(void)
}
ulHandle++;
SDL_AddAudioDevice(0, stLogDevice.szProductInfo, (void *)(ulHandle));
SDL_AddAudioDevice(0, stLogDevice.szProductInfo, NULL, (void *)(ulHandle));
ulHandle++;
SDL_AddAudioDevice(1, stLogDevice.szProductInfo, (void *)(ulHandle));
SDL_AddAudioDevice(1, stLogDevice.szProductInfo, NULL, (void *)(ulHandle));
}
}

4
src/audio/pipewire/SDL_pipewire.c
View File

@ -266,7 +266,7 @@ io_list_check_add(struct io_node *node)
spa_list_append(&hotplug_io_list, &node->link);
if (SDL_AtomicGet(&hotplug_events_enabled)) {
SDL_AddAudioDevice(node->is_capture, node->name, PW_ID_TO_HANDLE(node->id));
SDL_AddAudioDevice(node->is_capture, node->name, &node->spec, PW_ID_TO_HANDLE(node->id));
}
dup_found:
@ -768,7 +768,7 @@ PIPEWIRE_DetectDevices()
io_list_sort();
spa_list_for_each (io, &hotplug_io_list, link) {
SDL_AddAudioDevice(io->is_capture, io->name, PW_ID_TO_HANDLE(io->id));
SDL_AddAudioDevice(io->is_capture, io->name, &io->spec, PW_ID_TO_HANDLE(io->id));
}
SDL_AtomicSet(&hotplug_events_enabled, 1);

47
src/audio/pulseaudio/SDL_pulseaudio.c
View File

@ -696,12 +696,45 @@ static SDL_Thread *hotplug_thread = NULL;
/* device handles are device index + 1, cast to void*, so we never pass a NULL. */
static SDL_AudioFormat
PulseFormatToSDLFormat(pa_sample_format_t format)
{
switch (format) {
case PA_SAMPLE_U8:
return AUDIO_U8;
case PA_SAMPLE_S16LE:
return AUDIO_S16LSB;
case PA_SAMPLE_S16BE:
return AUDIO_S16MSB;
case PA_SAMPLE_S32LE:
return AUDIO_S32LSB;
case PA_SAMPLE_S32BE:
return AUDIO_S32MSB;
case PA_SAMPLE_FLOAT32LE:
return AUDIO_F32LSB;
case PA_SAMPLE_FLOAT32BE:
return AUDIO_F32MSB;
default:
return 0;
}
}
/* This is called when PulseAudio adds an output ("sink") device. */
static void
SinkInfoCallback(pa_context *c, const pa_sink_info *i, int is_last, void *data)
{
SDL_AudioSpec spec;
if (i) {
SDL_AddAudioDevice(SDL_FALSE, i->description, (void *) ((size_t) i->index+1));
spec.freq = i->sample_spec.rate;
spec.channels = i->sample_spec.channels;
spec.format = PulseFormatToSDLFormat(i->sample_spec.format);
spec.silence = 0;
spec.samples = 0;
spec.size = 0;
spec.callback = NULL;
spec.userdata = NULL;
SDL_AddAudioDevice(SDL_FALSE, i->description, &spec, (void *) ((size_t) i->index+1));
}
}
@ -709,10 +742,20 @@ SinkInfoCallback(pa_context *c, const pa_sink_info *i, int is_last, void *data)
static void
SourceInfoCallback(pa_context *c, const pa_source_info *i, int is_last, void *data)
{
SDL_AudioSpec spec;
if (i) {
/* Skip "monitor" sources. These are just output from other sinks. */
if (i->monitor_of_sink == PA_INVALID_INDEX) {
SDL_AddAudioDevice(SDL_TRUE, i->description, (void *) ((size_t) i->index+1));
spec.freq = i->sample_spec.rate;
spec.channels = i->sample_spec.channels;
spec.format = PulseFormatToSDLFormat(i->sample_spec.format);
spec.silence = 0;
spec.samples = 0;
spec.size = 0;
spec.callback = NULL;
spec.userdata = NULL;
SDL_AddAudioDevice(SDL_TRUE, i->description, &spec, (void *) ((size_t) i->index+1));
}
}
}

12
src/audio/qsa/SDL_qsa_audio.c
View File

@ -528,7 +528,11 @@ QSA_DetectDevices(void)
devices;
status = snd_pcm_close(handle);
if (status == EOK) {
SDL_AddAudioDevice(SDL_FALSE, qsa_playback_device[qsa_playback_devices].name, &qsa_playback_device[qsa_playback_devices]);
/* Note that spec is NULL, because we are required to open the device before
* acquiring the mix format, making this information inaccessible at
* enumeration time
*/
SDL_AddAudioDevice(SDL_FALSE, qsa_playback_device[qsa_playback_devices].name, NULL, &qsa_playback_device[qsa_playback_devices]);
qsa_playback_devices++;
}
} else {
@ -586,7 +590,11 @@ QSA_DetectDevices(void)
devices;
status = snd_pcm_close(handle);
if (status == EOK) {
SDL_AddAudioDevice(SDL_TRUE, qsa_capture_device[qsa_capture_devices].name, &qsa_capture_device[qsa_capture_devices]);
/* Note that spec is NULL, because we are required to open the device before
* acquiring the mix format, making this information inaccessible at
* enumeration time
*/
SDL_AddAudioDevice(SDL_TRUE, qsa_capture_device[qsa_capture_devices].name, NULL, &qsa_capture_device[qsa_capture_devices]);
qsa_capture_devices++;
}
} else {

49
src/audio/wasapi/SDL_wasapi.c
View File

@ -117,10 +117,34 @@ WASAPI_RemoveDevice(const SDL_bool iscapture, LPCWSTR devid)
}
}
static SDL_AudioFormat
WaveFormatToSDLFormat(WAVEFORMATEX *waveformat)
{
if ((waveformat->wFormatTag == WAVE_FORMAT_IEEE_FLOAT) && (waveformat->wBitsPerSample == 32)) {
return AUDIO_F32SYS;
} else if ((waveformat->wFormatTag == WAVE_FORMAT_PCM) && (waveformat->wBitsPerSample == 16)) {
return AUDIO_S16SYS;
} else if ((waveformat->wFormatTag == WAVE_FORMAT_PCM) && (waveformat->wBitsPerSample == 32)) {
return AUDIO_S32SYS;
} else if (waveformat->wFormatTag == WAVE_FORMAT_EXTENSIBLE) {
const WAVEFORMATEXTENSIBLE *ext = (const WAVEFORMATEXTENSIBLE *) waveformat;
if ((SDL_memcmp(&ext->SubFormat, &SDL_KSDATAFORMAT_SUBTYPE_IEEE_FLOAT, sizeof (GUID)) == 0) && (waveformat->wBitsPerSample == 32)) {
return AUDIO_F32SYS;
} else if ((SDL_memcmp(&ext->SubFormat, &SDL_KSDATAFORMAT_SUBTYPE_PCM, sizeof (GUID)) == 0) && (waveformat->wBitsPerSample == 16)) {
return AUDIO_S16SYS;
} else if ((SDL_memcmp(&ext->SubFormat, &SDL_KSDATAFORMAT_SUBTYPE_PCM, sizeof (GUID)) == 0) && (waveformat->wBitsPerSample == 32)) {
return AUDIO_S32SYS;
}
}
SDL_assert(0 && "Unrecognized wFormatTag!");
return 0;
}
void
WASAPI_AddDevice(const SDL_bool iscapture, const char *devname, LPCWSTR devid)
WASAPI_AddDevice(const SDL_bool iscapture, const char *devname, WAVEFORMATEXTENSIBLE *fmt, LPCWSTR devid)
{
DevIdList *devidlist;
SDL_AudioSpec spec;
/* You can have multiple endpoints on a device that are mutually exclusive ("Speakers" vs "Line Out" or whatever).
In a perfect world, things that are unplugged won't be in this collection. The only gotcha is probably for
@ -149,7 +173,11 @@ WASAPI_AddDevice(const SDL_bool iscapture, const char *devname, LPCWSTR devid)
devidlist->next = deviceid_list;
deviceid_list = devidlist;
SDL_AddAudioDevice(iscapture, devname, (void *) devid);
SDL_zero(spec);
spec.channels = fmt->Format.nChannels;
spec.freq = fmt->Format.nSamplesPerSec;
spec.format = WaveFormatToSDLFormat((WAVEFORMATEX *) fmt);
SDL_AddAudioDevice(iscapture, devname, &spec, (void *) devid);
}
static void
@ -539,22 +567,7 @@ WASAPI_PrepDevice(_THIS, const SDL_bool updatestream)
this->spec.channels = (Uint8) waveformat->nChannels;
/* Make sure we have a valid format that we can convert to whatever WASAPI wants. */
if ((waveformat->wFormatTag == WAVE_FORMAT_IEEE_FLOAT) && (waveformat->wBitsPerSample == 32)) {
wasapi_format = AUDIO_F32SYS;
} else if ((waveformat->wFormatTag == WAVE_FORMAT_PCM) && (waveformat->wBitsPerSample == 16)) {
wasapi_format = AUDIO_S16SYS;
} else if ((waveformat->wFormatTag == WAVE_FORMAT_PCM) && (waveformat->wBitsPerSample == 32)) {
wasapi_format = AUDIO_S32SYS;
} else if (waveformat->wFormatTag == WAVE_FORMAT_EXTENSIBLE) {
const WAVEFORMATEXTENSIBLE *ext = (const WAVEFORMATEXTENSIBLE *) waveformat;
if ((SDL_memcmp(&ext->SubFormat, &SDL_KSDATAFORMAT_SUBTYPE_IEEE_FLOAT, sizeof (GUID)) == 0) && (waveformat->wBitsPerSample == 32)) {
wasapi_format = AUDIO_F32SYS;
} else if ((SDL_memcmp(&ext->SubFormat, &SDL_KSDATAFORMAT_SUBTYPE_PCM, sizeof (GUID)) == 0) && (waveformat->wBitsPerSample == 16)) {
wasapi_format = AUDIO_S16SYS;
} else if ((SDL_memcmp(&ext->SubFormat, &SDL_KSDATAFORMAT_SUBTYPE_PCM, sizeof (GUID)) == 0) && (waveformat->wBitsPerSample == 32)) {
wasapi_format = AUDIO_S32SYS;
}
}
wasapi_format = WaveFormatToSDLFormat(waveformat);
while ((!valid_format) && (test_format)) {
if (test_format == wasapi_format) {

2
src/audio/wasapi/SDL_wasapi.h
View File

@ -63,7 +63,7 @@ extern SDL_atomic_t WASAPI_DefaultCaptureGeneration;
int WASAPI_PrepDevice(_THIS, const SDL_bool updatestream);
void WASAPI_RefDevice(_THIS);
void WASAPI_UnrefDevice(_THIS);
void WASAPI_AddDevice(const SDL_bool iscapture, const char *devname, LPCWSTR devid);
void WASAPI_AddDevice(const SDL_bool iscapture, const char *devname, WAVEFORMATEXTENSIBLE *fmt, LPCWSTR devid);
void WASAPI_RemoveDevice(const SDL_bool iscapture, LPCWSTR devid);
/* These are functions that are implemented differently for Windows vs WinRT. */

26
src/audio/wasapi/SDL_wasapi_win32.c
View File

@ -65,26 +65,31 @@ static const IID SDL_IID_IMMNotificationClient = { 0x7991eec9, 0x7e89, 0x4d85,{
static const IID SDL_IID_IMMEndpoint = { 0x1be09788, 0x6894, 0x4089,{ 0x85, 0x86, 0x9a, 0x2a, 0x6c, 0x26, 0x5a, 0xc5 } };
static const IID SDL_IID_IAudioClient = { 0x1cb9ad4c, 0xdbfa, 0x4c32,{ 0xb1, 0x78, 0xc2, 0xf5, 0x68, 0xa7, 0x03, 0xb2 } };
static const PROPERTYKEY SDL_PKEY_Device_FriendlyName = { { 0xa45c254e, 0xdf1c, 0x4efd,{ 0x80, 0x20, 0x67, 0xd1, 0x46, 0xa8, 0x50, 0xe0, } }, 14 };
static const PROPERTYKEY SDL_PKEY_AudioEngine_DeviceFormat = { { 0xf19f064d, 0x82c, 0x4e27,{ 0xbc, 0x73, 0x68, 0x82, 0xa1, 0xbb, 0x8e, 0x4c, } }, 0 };
static char *
GetWasapiDeviceName(IMMDevice *device)
static void
GetWasapiDeviceInfo(IMMDevice *device, char **utf8dev, WAVEFORMATEXTENSIBLE *fmt)
{
/* PKEY_Device_FriendlyName gives you "Speakers (SoundBlaster Pro)" which drives me nuts. I'd rather it be
"SoundBlaster Pro (Speakers)" but I guess that's developers vs users. Windows uses the FriendlyName in
its own UIs, like Volume Control, etc. */
char *utf8dev = NULL;
IPropertyStore *props = NULL;
*utf8dev = NULL;
SDL_zerop(fmt);
if (SUCCEEDED(IMMDevice_OpenPropertyStore(device, STGM_READ, &props))) {
PROPVARIANT var;
PropVariantInit(&var);
if (SUCCEEDED(IPropertyStore_GetValue(props, &SDL_PKEY_Device_FriendlyName, &var))) {
utf8dev = WIN_StringToUTF8W(var.pwszVal);
*utf8dev = WIN_StringToUTF8W(var.pwszVal);
}
PropVariantClear(&var);
if (SUCCEEDED(IPropertyStore_GetValue(props, &SDL_PKEY_AudioEngine_DeviceFormat, &var))) {
SDL_memcpy(fmt, var.blob.pBlobData, SDL_min(var.blob.cbSize, sizeof(WAVEFORMATEXTENSIBLE)));
}
PropVariantClear(&var);
IPropertyStore_Release(props);
}
return utf8dev;
}
@ -194,9 +199,11 @@ SDLMMNotificationClient_OnDeviceStateChanged(IMMNotificationClient *ithis, LPCWS
if (SUCCEEDED(IMMEndpoint_GetDataFlow(endpoint, &flow))) {
const SDL_bool iscapture = (flow == eCapture);
if (dwNewState == DEVICE_STATE_ACTIVE) {
char *utf8dev = GetWasapiDeviceName(device);
char *utf8dev;
WAVEFORMATEXTENSIBLE fmt;
GetWasapiDeviceInfo(device, &utf8dev, &fmt);
if (utf8dev) {
WASAPI_AddDevice(iscapture, utf8dev, pwstrDeviceId);
WASAPI_AddDevice(iscapture, utf8dev, &fmt, pwstrDeviceId);
SDL_free(utf8dev);
}
} else {
@ -352,6 +359,7 @@ typedef struct
{
LPWSTR devid;
char *devname;
WAVEFORMATEXTENSIBLE fmt;
} EndpointItem;
static int sort_endpoints(const void *_a, const void *_b)
@ -408,7 +416,7 @@ WASAPI_EnumerateEndpointsForFlow(const SDL_bool iscapture)
IMMDevice *device = NULL;
if (SUCCEEDED(IMMDeviceCollection_Item(collection, i, &device))) {
if (SUCCEEDED(IMMDevice_GetId(device, &item->devid))) {
item->devname = GetWasapiDeviceName(device);
GetWasapiDeviceInfo(device, &item->devname, &item->fmt);
}
IMMDevice_Release(device);
}
@ -421,7 +429,7 @@ WASAPI_EnumerateEndpointsForFlow(const SDL_bool iscapture)
for (i = 0; i < total; i++) {
EndpointItem *item = items + i;
if ((item->devid) && (item->devname)) {
WASAPI_AddDevice(iscapture, item->devname, item->devid);
WASAPI_AddDevice(iscapture, item->devname, &item->fmt, item->devid);
}
SDL_free(item->devname);
CoTaskMemFree(item->devid);

27
src/audio/wasapi/SDL_wasapi_winrt.cpp
View File

@ -32,6 +32,7 @@
#include <windows.devices.enumeration.h>
#include <windows.media.devices.h>
#include <wrl/implements.h>
#include <collection.h>
extern "C" {
#include "../../core/windows/SDL_windows.h"
@ -52,6 +53,8 @@ using namespace Windows::Media::Devices;
using namespace Windows::Foundation;
using namespace Microsoft::WRL;
static Platform::String^ SDL_PKEY_AudioEngine_DeviceFormat = L"{f19f064d-082c-4e27-bc73-6882a1bb8e4c} 0";
class SDL_WasapiDeviceEventHandler
{
public:
@ -78,9 +81,16 @@ private:
SDL_WasapiDeviceEventHandler::SDL_WasapiDeviceEventHandler(const SDL_bool _iscapture)
: iscapture(_iscapture)
, completed(SDL_CreateSemaphore(0))
, watcher(DeviceInformation::CreateWatcher(_iscapture ? DeviceClass::AudioCapture : DeviceClass::AudioRender))
{
if (!watcher || !completed)
if (!completed)
return; // uhoh.
Platform::String^ selector = _iscapture ? MediaDevice::GetAudioCaptureSelector() :
MediaDevice::GetAudioRenderSelector();
Platform::Collections::Vector<Platform::String^> properties;
properties.Append(SDL_PKEY_AudioEngine_DeviceFormat);
watcher = DeviceInformation::CreateWatcher(selector, properties.GetView());
if (!watcher)
return; // uhoh.
// !!! FIXME: this doesn't need a lambda here, I think, if I make SDL_WasapiDeviceEventHandler a proper C++/CX class. --ryan.
@ -124,7 +134,18 @@ SDL_WasapiDeviceEventHandler::OnDeviceAdded(DeviceWatcher^ sender, DeviceInforma
SDL_assert(sender == this->watcher);
char *utf8dev = WIN_StringToUTF8(info->Name->Data());
if (utf8dev) {
WASAPI_AddDevice(this->iscapture, utf8dev, info->Id->Data());
WAVEFORMATEXTENSIBLE fmt;
Platform::Object^ obj = info->Properties->Lookup(SDL_PKEY_AudioEngine_DeviceFormat);
if (obj) {
IPropertyValue^ property = (IPropertyValue^) obj;
Platform::Array<unsigned char>^ data;
property->GetUInt8Array(&data);
SDL_memcpy(&fmt, data->Data, SDL_min(data->Length, sizeof(WAVEFORMATEXTENSIBLE)));
} else {
SDL_zero(fmt);
}
WASAPI_AddDevice(this->iscapture, utf8dev, &fmt, info->Id->Data());
SDL_free(utf8dev);
}
}

9
src/audio/winmm/SDL_winmm.c
View File

@ -75,12 +75,19 @@ static void DetectWave##typ##Devs(void) { \
const UINT iscapture = iscap ? 1 : 0; \
const UINT devcount = wave##typ##GetNumDevs(); \
capstyp##2W caps; \
SDL_AudioSpec spec; \
UINT i; \
SDL_zero(spec); \
for (i = 0; i < devcount; i++) { \
if (wave##typ##GetDevCaps(i,(LP##capstyp##W)&caps,sizeof(caps))==MMSYSERR_NOERROR) { \
char *name = WIN_LookupAudioDeviceName(caps.szPname,&caps.NameGuid); \
if (name != NULL) { \
SDL_AddAudioDevice((int) iscapture, name, (void *) ((size_t) i+1)); \
/* Note that freq/format are not filled in, as this information \
* is not provided by the caps struct! At best, we get possible \
* sample formats, but not an _active_ format. \
*/ \
spec.channels = caps.wChannels; \
SDL_AddAudioDevice((int) iscapture, name, &spec, (void *) ((size_t) i+1)); \
SDL_free(name); \
} \
} \

1
src/dynapi/SDL_dynapi_overrides.h
View File

@ -808,3 +808,4 @@
#define SDL_isprint SDL_isprint_REAL
#define SDL_isgraph SDL_isgraph_REAL
#define SDL_AndroidShowToast SDL_AndroidShowToast_REAL
#define SDL_GetAudioDeviceSpec SDL_GetAudioDeviceSpec_REAL

1
src/dynapi/SDL_dynapi_procs.h
View File

@ -873,3 +873,4 @@ SDL_DYNAPI_PROC(int,SDL_isgraph,(int a),(a),return)
#ifdef __ANDROID__
SDL_DYNAPI_PROC(int,SDL_AndroidShowToast,(const char *a, int b, int c, int d, int e),(a,b,c,d,e),return)
#endif
SDL_DYNAPI_PROC(int,SDL_GetAudioDeviceSpec,(int a, int b, SDL_AudioSpec *c),(a,b,c),return)