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