/* * Copyright (C) 2008 Ole André Vadla Ravnås * * 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 /* 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