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/*
* Copyright (C) 2008 Ole André Vadla Ravnås <ole.andre.ravnas@tandberg.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "gstwasapiutil.h"
#include <mmdeviceapi.h>
/* These seem to be missing in the Windows SDK... */
const CLSID CLSID_MMDeviceEnumerator = { 0xbcde0395, 0xe52f, 0x467c,
{0x8e, 0x3d, 0xc4, 0x57, 0x92, 0x91, 0x69, 0x2e}
};
const IID IID_IMMDeviceEnumerator = { 0xa95664d2, 0x9614, 0x4f35,
{0xa7, 0x46, 0xde, 0x8d, 0xb6, 0x36, 0x17, 0xe6}
};
const IID IID_IAudioClient = { 0x1cb9ad4c, 0xdbfa, 0x4c32,
{0xb1, 0x78, 0xc2, 0xf5, 0x68, 0xa7, 0x03, 0xb2}
};
const IID IID_IAudioClock = { 0xcd63314f, 0x3fba, 0x4a1b,
{0x81, 0x2c, 0xef, 0x96, 0x35, 0x87, 0x28, 0xe7}
};
const IID IID_IAudioCaptureClient = { 0xc8adbd64, 0xe71e, 0x48a0,
{0xa4, 0xde, 0x18, 0x5c, 0x39, 0x5c, 0xd3, 0x17}
};
const IID IID_IAudioRenderClient = { 0xf294acfc, 0x3146, 0x4483,
{0xa7, 0xbf, 0xad, 0xdc, 0xa7, 0xc2, 0x60, 0xe2}
};
const gchar *
gst_wasapi_util_hresult_to_string (HRESULT hr)
{
const gchar *s = "AUDCLNT_E_UNKNOWN";
switch (hr) {
case AUDCLNT_E_NOT_INITIALIZED:
s = "AUDCLNT_E_NOT_INITIALIZED";
break;
case AUDCLNT_E_ALREADY_INITIALIZED:
s = "AUDCLNT_E_ALREADY_INITIALIZED";
break;
case AUDCLNT_E_WRONG_ENDPOINT_TYPE:
s = "AUDCLNT_E_WRONG_ENDPOINT_TYPE";
break;
case AUDCLNT_E_DEVICE_INVALIDATED:
s = "AUDCLNT_E_DEVICE_INVALIDATED";
break;
case AUDCLNT_E_NOT_STOPPED:
s = "AUDCLNT_E_NOT_STOPPED";
break;
case AUDCLNT_E_BUFFER_TOO_LARGE:
s = "AUDCLNT_E_BUFFER_TOO_LARGE";
break;
case AUDCLNT_E_OUT_OF_ORDER:
s = "AUDCLNT_E_OUT_OF_ORDER";
break;
case AUDCLNT_E_UNSUPPORTED_FORMAT:
s = "AUDCLNT_E_UNSUPPORTED_FORMAT";
break;
case AUDCLNT_E_INVALID_SIZE:
s = "AUDCLNT_E_INVALID_SIZE";
break;
case AUDCLNT_E_DEVICE_IN_USE:
s = "AUDCLNT_E_DEVICE_IN_USE";
break;
case AUDCLNT_E_BUFFER_OPERATION_PENDING:
s = "AUDCLNT_E_BUFFER_OPERATION_PENDING";
break;
case AUDCLNT_E_THREAD_NOT_REGISTERED:
s = "AUDCLNT_E_THREAD_NOT_REGISTERED";
break;
case AUDCLNT_E_EXCLUSIVE_MODE_NOT_ALLOWED:
s = "AUDCLNT_E_EXCLUSIVE_MODE_NOT_ALLOWED";
break;
case AUDCLNT_E_ENDPOINT_CREATE_FAILED:
s = "AUDCLNT_E_ENDPOINT_CREATE_FAILED";
break;
case AUDCLNT_E_SERVICE_NOT_RUNNING:
s = "AUDCLNT_E_SERVICE_NOT_RUNNING";
break;
case AUDCLNT_E_EVENTHANDLE_NOT_EXPECTED:
s = "AUDCLNT_E_EVENTHANDLE_NOT_EXPECTED";
break;
case AUDCLNT_E_EXCLUSIVE_MODE_ONLY:
s = "AUDCLNT_E_EXCLUSIVE_MODE_ONLY";
break;
case AUDCLNT_E_BUFDURATION_PERIOD_NOT_EQUAL:
s = "AUDCLNT_E_BUFDURATION_PERIOD_NOT_EQUAL";
break;
case AUDCLNT_E_EVENTHANDLE_NOT_SET:
s = "AUDCLNT_E_EVENTHANDLE_NOT_SET";
break;
case AUDCLNT_E_INCORRECT_BUFFER_SIZE:
s = "AUDCLNT_E_INCORRECT_BUFFER_SIZE";
break;
case AUDCLNT_E_BUFFER_SIZE_ERROR:
s = "AUDCLNT_E_BUFFER_SIZE_ERROR";
break;
case AUDCLNT_E_CPUUSAGE_EXCEEDED:
s = "AUDCLNT_E_CPUUSAGE_EXCEEDED";
break;
case AUDCLNT_S_BUFFER_EMPTY:
s = "AUDCLNT_S_BUFFER_EMPTY";
break;
case AUDCLNT_S_THREAD_ALREADY_REGISTERED:
s = "AUDCLNT_S_THREAD_ALREADY_REGISTERED";
break;
case AUDCLNT_S_POSITION_STALLED:
s = "AUDCLNT_S_POSITION_STALLED";
break;
}
return s;
}
gboolean
gst_wasapi_util_get_default_device_client (GstElement * element,
gboolean capture,
guint rate,
GstClockTime buffer_time,
GstClockTime period_time,
DWORD flags, IAudioClient ** ret_client, GstClockTime * ret_latency)
{
gboolean res = FALSE;
HRESULT hr;
IMMDeviceEnumerator *enumerator = NULL;
IMMDevice *device = NULL;
IAudioClient *client = NULL;
REFERENCE_TIME latency_rt, def_period, min_period;
WAVEFORMATEXTENSIBLE format;
hr = CoCreateInstance (&CLSID_MMDeviceEnumerator, NULL, CLSCTX_ALL,
&IID_IMMDeviceEnumerator, &enumerator);
if (hr != S_OK) {
GST_ERROR_OBJECT (element, "CoCreateInstance (MMDeviceEnumerator) failed");
goto beach;
}
hr = IMMDeviceEnumerator_GetDefaultAudioEndpoint (enumerator,
(capture) ? eCapture : eRender, eCommunications, &device);
if (hr != S_OK) {
GST_ERROR_OBJECT (element,
"IMMDeviceEnumerator::GetDefaultAudioEndpoint () failed");
goto beach;
}
hr = IMMDevice_Activate (device, &IID_IAudioClient, CLSCTX_ALL, NULL,
&client);
if (hr != S_OK) {
GST_ERROR_OBJECT (element, "IMMDevice::Activate (IID_IAudioClient) failed");
goto beach;
}
hr = IAudioClient_GetDevicePeriod (client, &def_period, &min_period);
if (hr != S_OK) {
GST_ERROR_OBJECT (element, "IAudioClient::GetDevicePeriod () failed");
goto beach;
}
ZeroMemory (&format, sizeof (format));
format.Format.cbSize = sizeof (format) - sizeof (format.Format);
format.Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
format.Format.nChannels = 2;
format.Format.nSamplesPerSec = rate;
format.Format.wBitsPerSample = 16;
format.Format.nBlockAlign = format.Format.nChannels
* (format.Format.wBitsPerSample / 8);
format.Format.nAvgBytesPerSec = format.Format.nSamplesPerSec
* format.Format.nBlockAlign;
format.Samples.wValidBitsPerSample = 16;
format.dwChannelMask = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT;
format.SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
hr = IAudioClient_Initialize (client, AUDCLNT_SHAREMODE_EXCLUSIVE, /* or AUDCLNT_SHAREMODE_SHARED */
flags, buffer_time / 100, /* buffer duration in 100s of ns */
period_time / 100, /* periodicity in 100s of ns */
(WAVEFORMATEX *) & format, NULL);
if (hr != S_OK) {
GST_ELEMENT_ERROR (element, RESOURCE, OPEN_READ, (NULL),
("IAudioClient::Initialize () failed: %s",
gst_wasapi_util_hresult_to_string (hr)));
goto beach;
}
hr = IAudioClient_GetStreamLatency (client, &latency_rt);
if (hr != S_OK) {
GST_ERROR_OBJECT (element, "IAudioClient::GetStreamLatency () failed");
goto beach;
}
GST_INFO_OBJECT (element, "default period: %d (%d ms), "
"minimum period: %d (%d ms), "
"latency: %d (%d ms)",
(guint32) def_period, (guint32) def_period / 10000,
(guint32) min_period, (guint32) min_period / 10000,
(guint32) latency_rt, (guint32) latency_rt / 10000);
IUnknown_AddRef (client);
*ret_client = client;
*ret_latency = latency_rt * 100;
res = TRUE;
beach:
if (client != NULL)
IUnknown_Release (client);
if (device != NULL)
IUnknown_Release (device);
if (enumerator != NULL)
IUnknown_Release (enumerator);
return res;
}
#if 0
static WAVEFORMATEXTENSIBLE *
gst_wasapi_src_probe_device_format (GstWasapiSrc * self, IMMDevice * device)
{
HRESULT hr;
IPropertyStore *props = NULL;
PROPVARIANT format_prop;
WAVEFORMATEXTENSIBLE *format = NULL;
hr = IMMDevice_OpenPropertyStore (device, STGM_READ, &props);
if (hr != S_OK)
goto beach;
PropVariantInit (&format_prop);
hr = IPropertyStore_GetValue (props, &PKEY_AudioEngine_DeviceFormat,
&format_prop);
if (hr != S_OK)
goto beach;
format = (WAVEFORMATEXTENSIBLE *) format_prop.blob.pBlobData;
/* hmm: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\MMDevices\Audio\Capture\{64adb8b7-9716-4c02-8929-96e53f5642da}\Properties */
beach:
if (props != NULL)
IUnknown_Release (props);
return format;
}
#endif
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