gstreamer/sys/mediafoundation/mediacapturewrapper.cpp

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/* GStreamer
* Copyright (C) 2020 Seungha Yang <seungha@centricular.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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include "gstmfutils.h"
#include "mediacapturewrapper.h"
#include "AsyncOperations.h"
#include <windows.ui.core.h>
#include <locale>
#include <codecvt>
#include <string.h>
using namespace ABI::Windows::ApplicationModel::Core;
using namespace ABI::Windows::Foundation::Collections;
using namespace ABI::Windows::Media::Devices;
using namespace ABI::Windows::Media::MediaProperties;
G_BEGIN_DECLS
GST_DEBUG_CATEGORY_EXTERN (gst_mf_source_object_debug);
#define GST_CAT_DEFAULT gst_mf_source_object_debug
G_END_DECLS
static std::string
convert_hstring_to_string (HString * hstr)
{
const wchar_t *raw_hstr;
if (!hstr)
return std::string();
raw_hstr = hstr->GetRawBuffer (nullptr);
if (!raw_hstr)
return std::string();
std::wstring_convert<std::codecvt_utf8<wchar_t>, wchar_t> converter;
return converter.to_bytes (raw_hstr);
}
static std::string
gst_media_capture_subtype_to_video_format (const std::string &subtype)
{
/* https://docs.microsoft.com/en-us/uwp/api/windows.media.mediaproperties.videoencodingproperties.subtype#Windows_Media_MediaProperties_VideoEncodingProperties_Subtype */
if (g_ascii_strcasecmp (subtype.c_str(), "RGB32") == 0)
return "BGRx";
else if (g_ascii_strcasecmp (subtype.c_str(), "ARGB32") == 0)
return "BGRA";
else if (g_ascii_strcasecmp (subtype.c_str(), "RGB24") == 0)
return "BGR";
else if (g_ascii_strcasecmp (subtype.c_str(), "NV12") == 0)
return "NV12";
else if (g_ascii_strcasecmp (subtype.c_str(), "YV12") == 0)
return "YV12";
else if (g_ascii_strcasecmp (subtype.c_str(), "IYUV") == 0)
return "I420";
else if (g_ascii_strcasecmp (subtype.c_str(), "YUY2") == 0)
return "YUY2";
/* FIXME: add more */
return std::string();
}
GstWinRTMediaDescription::GstWinRTMediaDescription()
: caps_(nullptr)
{
}
GstWinRTMediaDescription::GstWinRTMediaDescription
(const GstWinRTMediaDescription& other)
: caps_(nullptr)
{
if (other.source_id_.IsValid())
other.source_id_.CopyTo(source_id_.GetAddressOf());
if (other.subtype_.IsValid())
other.subtype_.CopyTo(subtype_.GetAddressOf());
gst_caps_replace (&caps_, other.caps_);
}
GstWinRTMediaDescription::~GstWinRTMediaDescription()
{
Release();
}
void
GstWinRTMediaDescription::Release()
{
source_id_.Release();
subtype_.Release();
gst_clear_caps(&caps_);
}
bool
GstWinRTMediaDescription::IsValid() const
{
if (!source_id_.IsValid())
return false;
if (!subtype_.IsValid())
return false;
if (!caps_)
return false;
return true;
}
HRESULT
GstWinRTMediaDescription::Fill(HString &source_id,
const ComPtr<IMediaCaptureVideoProfileMediaDescription>& desc)
{
Release();
if (!source_id.IsValid()) {
GST_WARNING("Invalid source id");
return E_FAIL;
}
ComPtr<IMediaCaptureVideoProfileMediaDescription2> desc2;
UINT32 width = 0;
UINT32 height = 0;
DOUBLE framerate = 0;
gint fps_n = 0, fps_d = 1;
HString hstr_subtype;
std::string subtype;
std::string format;
GstCaps *caps;
HRESULT hr;
hr = desc.As (&desc2);
if (!gst_mf_result (hr))
return hr;
hr = desc->get_Width (&width);
if (!gst_mf_result (hr))
return hr;
hr = desc->get_Height (&height);
if (!gst_mf_result (hr))
return hr;
hr = desc->get_FrameRate (&framerate);
if (gst_mf_result (hr) && framerate > 0)
gst_util_double_to_fraction (framerate, &fps_n, &fps_d);
hr = desc2->get_Subtype (hstr_subtype.GetAddressOf ());
if (!gst_mf_result (hr))
return hr;
subtype = convert_hstring_to_string (&hstr_subtype);
if (subtype.empty())
return E_FAIL;
format = gst_media_capture_subtype_to_video_format (subtype);
if (format.empty()) {
GST_FIXME ("Unhandled subtype %s", subtype.c_str());
return E_FAIL;
}
caps = gst_caps_new_simple ("video/x-raw",
"format", G_TYPE_STRING, format.c_str(), "width", G_TYPE_INT, width,
"height", G_TYPE_INT, height, NULL);
if (fps_n > 0 && fps_d > 0)
gst_caps_set_simple (caps,
"framerate", GST_TYPE_FRACTION, fps_n, fps_d, NULL);
source_id.CopyTo (source_id_.GetAddressOf());
hstr_subtype.CopyTo (subtype_.GetAddressOf());
caps_ = caps;
return S_OK;
}
GstWinRTMediaFrameSourceGroup::GstWinRTMediaFrameSourceGroup()
{
}
GstWinRTMediaFrameSourceGroup::GstWinRTMediaFrameSourceGroup
(const GstWinRTMediaFrameSourceGroup& other)
{
id_ = other.id_;
display_name_ = other.display_name_;
source_group_ = other.source_group_;
source_list_ = other.source_list_;
}
GstWinRTMediaFrameSourceGroup::~GstWinRTMediaFrameSourceGroup()
{
Release ();
}
void
GstWinRTMediaFrameSourceGroup::Release()
{
id_.clear ();
display_name_.clear ();
source_group_.Reset ();
source_list_.clear ();
}
bool
GstWinRTMediaFrameSourceGroup::Contain(const GstWinRTMediaDescription& desc)
{
if (!desc.IsValid())
return false;
if (source_list_.empty())
return false;
for (const auto& iter: source_list_) {
unsigned int dummy;
if (wcscmp (iter.source_id_.GetRawBuffer (&dummy),
desc.source_id_.GetRawBuffer (&dummy)))
continue;
if (wcscmp (iter.subtype_.GetRawBuffer (&dummy),
desc.subtype_.GetRawBuffer (&dummy)))
continue;
if (gst_caps_is_equal (iter.caps_, desc.caps_))
return true;
}
return false;
}
HRESULT
GstWinRTMediaFrameSourceGroup::Fill
(const ComPtr<IMediaFrameSourceGroup> &source_group)
{
HRESULT hr = S_OK;
HString hstr_id;
HString hstr_display_name;
ComPtr<IVectorView<MediaFrameSourceInfo*>> info_list;
UINT32 count = 0;
Release();
hr = source_group->get_Id(hstr_id.GetAddressOf());
if (!gst_mf_result(hr))
goto error;
id_ = convert_hstring_to_string (&hstr_id);
if (id_.empty()) {
GST_WARNING ("Emptry source group id");
hr = E_FAIL;
goto error;
}
hr = source_group->get_DisplayName (hstr_display_name.GetAddressOf());
if (!gst_mf_result (hr))
goto error;
display_name_ = convert_hstring_to_string (&hstr_display_name);
if (display_name_.empty()) {
GST_WARNING ("Empty display name");
hr = E_FAIL;
goto error;
}
hr = source_group->get_SourceInfos (&info_list);
if (!gst_mf_result (hr))
goto error;
hr = info_list->get_Size (&count);
if (!gst_mf_result (hr))
goto error;
if (count == 0) {
GST_WARNING ("No available source info");
hr = E_FAIL;
goto error;
}
source_group_ = source_group;
GST_DEBUG ("source-group has %d entries", count);
for (UINT32 i = 0; i < count; i++) {
ComPtr<IMediaFrameSourceInfo> info;
ComPtr<IMediaFrameSourceInfo2> info2;
ComPtr<IVectorView<MediaCaptureVideoProfileMediaDescription*>> desc_list;
MediaFrameSourceKind source_kind;
MediaStreamType source_type;
UINT32 desc_count = 0;
HString source_id;
hr = info_list->GetAt(i, &info);
if (!gst_mf_result (hr))
continue;
hr = info.As (&info2);
if (!gst_mf_result (hr))
continue;
hr = info->get_SourceKind (&source_kind);
if (!gst_mf_result (hr))
continue;
/* This can be depth, infrared or others */
/* FIXME: add audio support */
if (source_kind != MediaFrameSourceKind::MediaFrameSourceKind_Color) {
GST_FIXME ("source-info has non-color source kind %d",
(gint) source_kind);
continue;
}
hr = info->get_MediaStreamType (&source_type);
if (!gst_mf_result (hr))
continue;
/* FIXME: support audio */
if (source_type != MediaStreamType::MediaStreamType_VideoPreview &&
source_type != MediaStreamType::MediaStreamType_VideoRecord) {
continue;
}
hr = info->get_Id (source_id.GetAddressOf ());
if (!gst_mf_result (hr))
continue;
hr = info2->get_VideoProfileMediaDescription (&desc_list);
if (!gst_mf_result (hr))
continue;
hr = desc_list->get_Size (&desc_count);
if (!gst_mf_result (hr))
continue;
if (desc_count == 0) {
GST_WARNING("source-info has empty media description");
continue;
}
for (UINT32 j = 0; j < desc_count; j++) {
ComPtr<IMediaCaptureVideoProfileMediaDescription> desc;
hr = desc_list->GetAt (j, &desc);
if (!gst_mf_result (hr))
continue;
GstWinRTMediaDescription media_desc;
hr = media_desc.Fill(source_id, desc);
if (!gst_mf_result(hr))
continue;
source_list_.push_back(media_desc);
}
}
if (source_list_.empty()) {
GST_WARNING ("No usable source infos");
hr = E_FAIL;
goto error;
}
return S_OK;
error:
Release ();
return hr;
}
MediaCaptureWrapper::MediaCaptureWrapper()
: user_data_(nullptr)
{
user_cb_.frame_arrived = nullptr;
user_cb_.failed = nullptr;
/* Store CoreDispatecher if available */
findCoreDispatcher();
}
MediaCaptureWrapper::~MediaCaptureWrapper()
{
stopCapture();
if (frame_reader_)
frame_reader_->remove_FrameArrived (token_frame_arrived_);
if (media_capture_)
media_capture_->remove_Failed (token_capture_failed_);
}
void
MediaCaptureWrapper::RegisterCb (const MediaCaptureWrapperCallbacks &cb,
void * user_data)
{
user_cb_.frame_arrived = cb.frame_arrived;
user_cb_.failed = cb.failed;
user_data_ = user_data;
}
HRESULT
MediaCaptureWrapper::EnumrateFrameSourceGroup
(std::vector<GstWinRTMediaFrameSourceGroup> &group_list)
{
HRESULT hr = S_OK;
if (dispatcher_) {
hr = runOnUIThread (INFINITE,
[this, &group_list] {
return enumrateFrameSourceGroup(group_list);
});
} else {
hr = enumrateFrameSourceGroup(group_list);
}
return hr;
}
HRESULT
MediaCaptureWrapper::SetSourceGroup(const GstWinRTMediaFrameSourceGroup &group)
{
if (group.source_group_ == nullptr) {
GST_WARNING ("Invalid MediaFrameSourceGroup");
return E_FAIL;
}
if (group.source_list_.empty()) {
GST_WARNING ("group doesn't include source lifo");
return E_FAIL;
}
source_group_ =
std::unique_ptr<GstWinRTMediaFrameSourceGroup>
(new GstWinRTMediaFrameSourceGroup(group));
return S_OK;
}
HRESULT
MediaCaptureWrapper::SetMediaDescription(const GstWinRTMediaDescription &desc)
{
/* Must be source group was specified before this */
if (source_group_ == nullptr) {
GST_WARNING ("No frame source group was specified");
return E_FAIL;
}
if (!desc.IsValid()) {
GST_WARNING("Invalid MediaDescription");
return E_FAIL;
}
if (!source_group_->Contain(desc)) {
GST_WARNING ("MediaDescription is not part of current source group");
return E_FAIL;
}
media_desc_ =
std::unique_ptr<GstWinRTMediaDescription>
(new GstWinRTMediaDescription(desc));
return S_OK;
}
HRESULT
MediaCaptureWrapper::StartCapture()
{
HRESULT hr = S_OK;
hr = openMediaCapture();
if (!gst_mf_result (hr))
return hr;
if (dispatcher_) {
hr = runOnUIThread (INFINITE,
[this] {
return startCapture();
});
} else {
hr = startCapture();
}
return S_OK;
}
HRESULT
MediaCaptureWrapper::StopCapture()
{
HRESULT hr = S_OK;
if (dispatcher_) {
hr = runOnUIThread (INFINITE,
[this] {
return stopCapture();
});
} else {
hr = stopCapture();
}
return S_OK;
}
HRESULT
MediaCaptureWrapper::GetAvailableDescriptions
(std::vector<GstWinRTMediaDescription> &desc_list)
{
desc_list.clear();
if (!source_group_) {
GST_WARNING ("No frame source group available");
return E_FAIL;
}
desc_list = source_group_->source_list_;
return S_OK;
}
HRESULT
MediaCaptureWrapper::openMediaCapture()
{
HRESULT hr;
if (frame_reader_) {
GST_INFO ("Frame reader was configured");
return S_OK;
}
if (source_group_ == nullptr) {
GST_WARNING ("No frame source group was specified");
return E_FAIL;
}
if (media_desc_ == nullptr) {
GST_WARNING ("No media description was specified");
return E_FAIL;
}
hr = mediaCaptureInitPre ();
if (!gst_mf_result (hr))
return hr;
/* Wait user action and resulting mediaCaptureInitPost */
std::unique_lock<std::mutex> Lock(lock_);
if (!init_done_)
cond_.wait (Lock);
return frame_reader_ ? S_OK : E_FAIL;
}
HRESULT
MediaCaptureWrapper::mediaCaptureInitPre()
{
ComPtr<IAsyncAction> async_action;
HRESULT hr;
auto work_item = Callback<Implements<RuntimeClassFlags<ClassicCom>,
IDispatchedHandler, FtmBase>>([this]{
ComPtr<IMediaCaptureInitializationSettings> settings;
ComPtr<IMediaCaptureInitializationSettings5> settings5;
ComPtr<IMediaCapture> media_capture;
ComPtr<IMediaCapture5> media_capture5;
ComPtr<IAsyncAction> init_async;
HRESULT hr;
HStringReference hstr_setting =
HStringReference (
RuntimeClass_Windows_Media_Capture_MediaCaptureInitializationSettings);
HStringReference hstr_capture =
HStringReference (RuntimeClass_Windows_Media_Capture_MediaCapture);
IMediaFrameSourceGroup * source_group =
source_group_->source_group_.Get();
hr = ActivateInstance (hstr_setting.Get(), &settings);
if (!gst_mf_result (hr))
return hr;
hr = settings->put_StreamingCaptureMode (
StreamingCaptureMode::StreamingCaptureMode_Video);
if (!gst_mf_result (hr))
return hr;
hr = settings.As (&settings5);
if (!gst_mf_result (hr))
return hr;
hr = settings5->put_SourceGroup (source_group);
if (!gst_mf_result (hr))
return hr;
/* TODO: support D3D11 memory */
hr = settings5->put_MemoryPreference (
MediaCaptureMemoryPreference::MediaCaptureMemoryPreference_Cpu);
if (!gst_mf_result (hr))
return hr;
hr = settings5.As (&settings);
if (!gst_mf_result (hr))
return hr;
hr = ActivateInstance (hstr_capture.Get(), &media_capture5);
if (!gst_mf_result (hr))
return hr;
hr = media_capture5.As (&media_capture);
if (!gst_mf_result (hr))
return hr;
hr = media_capture->InitializeWithSettingsAsync (settings.Get(), &init_async);
if (!gst_mf_result (hr))
return hr;
return StartAsyncThen(
init_async.Get(),
[this, init_async, media_capture](_In_ HRESULT hr,
_In_ IAsyncAction *asyncResult, _In_ AsyncStatus asyncStatus) -> HRESULT
{
return mediaCaptureInitPost (init_async, media_capture);
});
});
init_done_ = false;
if (dispatcher_) {
hr = dispatcher_->RunAsync(CoreDispatcherPriority_Normal, work_item.Get(),
&async_action);
} else {
hr = work_item->Invoke ();
}
return hr;
}
HRESULT
MediaCaptureWrapper::mediaCaptureInitPost (ComPtr<IAsyncAction> init_async,
ComPtr<IMediaCapture> media_capture)
{
std::unique_lock<std::mutex> Lock(lock_);
ComPtr<IMediaFrameSource> frame_source;
ComPtr<IMapView<HSTRING, MediaFrameSource*>> frameSources;
ComPtr<IMediaFrameSource> source;
ComPtr<IMediaFrameFormat> format;
ComPtr<IVectorView<MediaFrameFormat*>> formatList;
ComPtr<IMediaCapture5> media_capture5;
ComPtr<IAsyncAction> set_format_async;
ComPtr<IAsyncOperation<MediaFrameReader*>> create_reader_async;
ComPtr<IMediaFrameReader> frame_reader;
boolean has_key;
UINT32 count = 0;
GstVideoInfo videoInfo;
HRESULT hr;
ComPtr<ITypedEventHandler<MediaFrameReader*, MediaFrameArrivedEventArgs*>>
frame_arrived_handler = Callback<ITypedEventHandler<MediaFrameReader*,
MediaFrameArrivedEventArgs*>> ([&]
(IMediaFrameReader * reader, IMediaFrameArrivedEventArgs* args)
{
return onFrameArrived(reader, args);
}
);
GST_DEBUG ("InitializeWithSettingsAsync done");
hr = init_async->GetResults ();
if (!gst_mf_result (hr))
goto done;
if (!gst_video_info_from_caps (&videoInfo, media_desc_->caps_)) {
GST_WARNING ("Couldn't convert caps to videoinfo");
hr = E_FAIL;
goto done;
}
hr = media_capture.As (&media_capture5);
if (!gst_mf_result (hr))
goto done;
hr = media_capture5->get_FrameSources (&frameSources);
if (!gst_mf_result (hr))
goto done;
hr = frameSources->HasKey (media_desc_->source_id_.Get(), &has_key);
if (!gst_mf_result (hr))
goto done;
if (!has_key) {
GST_ERROR ("MediaFrameSource unavailable");
hr = E_FAIL;
goto done;
}
hr = frameSources->Lookup (media_desc_->source_id_.Get(), &source);
if (!gst_mf_result (hr))
goto done;
hr = source->get_SupportedFormats (&formatList);
if (!gst_mf_result (hr))
goto done;
hr = formatList->get_Size (&count);
if (!gst_mf_result (hr))
goto done;
if (count == 0) {
GST_ERROR ("No supported format object");
hr = E_FAIL;
goto done;
}
/* FIXME: support audio */
for (UINT32 i = 0; i < count; i++) {
ComPtr<IMediaFrameFormat> fmt;
ComPtr<IVideoMediaFrameFormat> videoFmt;
ComPtr<IMediaRatio> ratio;
HString subtype;
UINT32 width = 0;
UINT32 height = 0;
hr = formatList->GetAt (i, &fmt);
if (!gst_mf_result (hr))
continue;
hr = fmt->get_VideoFormat (&videoFmt);
if (!gst_mf_result (hr))
continue;
hr = videoFmt->get_Width (&width);
if (!gst_mf_result (hr))
continue;
hr = videoFmt->get_Height (&height);
if (!gst_mf_result (hr))
continue;
if (width != GST_VIDEO_INFO_WIDTH (&videoInfo))
continue;
if (height != GST_VIDEO_INFO_HEIGHT (&videoInfo))
continue;
/* TODO: check major type for audio */
hr = fmt->get_Subtype (subtype.GetAddressOf ());
if (!gst_mf_result (hr))
continue;
if (wcscmp (subtype.GetRawBuffer (nullptr),
media_desc_->subtype_.GetRawBuffer (nullptr)))
continue;
format = fmt;
break;
}
if (!format) {
GST_ERROR (
"Couldn't find matching IMediaFrameFormat interface");
hr = E_FAIL;
goto done;
}
hr = source->SetFormatAsync (format.Get (), &set_format_async);
if (!gst_mf_result (hr))
goto done;
hr = SyncWait<void>(set_format_async.Get ());
if (!gst_mf_result (hr))
goto done;
hr = set_format_async->GetResults ();
if (!gst_mf_result (hr))
goto done;
hr = media_capture5->CreateFrameReaderAsync (source.Get(),
&create_reader_async);
if (!gst_mf_result (hr))
goto done;
hr = SyncWait<MediaFrameReader*>(create_reader_async.Get());
if (!gst_mf_result (hr))
goto done;
hr = create_reader_async->GetResults(&frame_reader);
if (!gst_mf_result (hr))
goto done;
hr = frame_reader->add_FrameArrived (frame_arrived_handler.Get(),
&token_frame_arrived_);
if (!gst_mf_result (hr))
goto done;
hr = media_capture->add_Failed
(Callback<IMediaCaptureFailedEventHandler> ([this]
(IMediaCapture * capture, IMediaCaptureFailedEventArgs* args)
{
return onCaptureFailed(capture, args);
}
).Get(),
&token_capture_failed_);
if (!gst_mf_result (hr))
goto done;
frame_reader_ = frame_reader;
media_capture_ = media_capture;
done:
init_done_ = true;
cond_.notify_all();
return S_OK;
}
HRESULT
MediaCaptureWrapper::startCapture()
{
HRESULT hr;
if (!frame_reader_) {
GST_ERROR ("Frame reader wasn't configured");
return E_FAIL;
}
ComPtr<IAsyncOperation<MediaFrameReaderStartStatus>> start_async;
hr = frame_reader_->StartAsync (&start_async);
if (!gst_mf_result (hr))
return hr;
hr = SyncWait<MediaFrameReaderStartStatus>(start_async.Get());
if (!gst_mf_result (hr))
return hr;
MediaFrameReaderStartStatus reader_status;
hr = start_async->GetResults(&reader_status);
if (!gst_mf_result (hr))
return hr;
if (reader_status !=
MediaFrameReaderStartStatus::MediaFrameReaderStartStatus_Success) {
GST_ERROR ("Cannot start frame reader, status %d",
(gint) reader_status);
return E_FAIL;
}
return S_OK;
}
HRESULT
MediaCaptureWrapper::stopCapture()
{
HRESULT hr = S_OK;
if (frame_reader_) {
ComPtr<IAsyncAction> async_action;
hr = frame_reader_->StopAsync (&async_action);
if (gst_mf_result (hr))
hr = SyncWait<void>(async_action.Get ());
}
return hr;
}
HRESULT
MediaCaptureWrapper::onFrameArrived(IMediaFrameReader *reader,
IMediaFrameArrivedEventArgs *args)
{
HRESULT hr;
ComPtr<IMediaFrameReference> frame_ref;
ComPtr<IVideoMediaFrame> video_frame;
ComPtr<ISoftwareBitmap> bitmap;
hr = reader->TryAcquireLatestFrame (&frame_ref);
if (!gst_mf_result (hr))
return hr;
if (!frame_ref)
return S_OK;
hr = frame_ref->get_VideoMediaFrame (&video_frame);
if (!gst_mf_result (hr))
return hr;
hr = video_frame->get_SoftwareBitmap (&bitmap);
if (!gst_mf_result (hr) || !bitmap)
return hr;
/* nothing to do if no callback was installed */
if (!user_cb_.frame_arrived)
return S_OK;
return user_cb_.frame_arrived (bitmap.Get(), user_data_);
}
HRESULT
MediaCaptureWrapper::onCaptureFailed(IMediaCapture *capture,
IMediaCaptureFailedEventArgs *args)
{
HRESULT hr;
UINT32 error_code = 0;
HString hstr_error_msg;
std::string error_msg;
hr = args->get_Code (&error_code);
gst_mf_result (hr);
hr = args->get_Message (hstr_error_msg.GetAddressOf());
gst_mf_result (hr);
error_msg = convert_hstring_to_string (&hstr_error_msg);
GST_WARNING ("Have error %s (%d)", error_msg.c_str(), error_code);
if (user_cb_.failed)
user_cb_.failed (error_msg, error_code, user_data_);
return S_OK;
}
void
MediaCaptureWrapper::findCoreDispatcher()
{
HStringReference hstr_core_app =
HStringReference(RuntimeClass_Windows_ApplicationModel_Core_CoreApplication);
HRESULT hr;
ComPtr<ICoreApplication> core_app;
hr = GetActivationFactory (hstr_core_app.Get(), &core_app);
if (!gst_mf_result(hr))
return;
ComPtr<ICoreApplicationView> core_app_view;
hr = core_app->GetCurrentView (&core_app_view);
if (!gst_mf_result(hr))
return;
ComPtr<ICoreWindow> core_window;
hr = core_app_view->get_CoreWindow (&core_window);
if (!gst_mf_result(hr))
return;
hr = core_window->get_Dispatcher (&dispatcher_);
if (!gst_mf_result(hr))
return;
GST_DEBUG("Main UI dispatcher is available");
}
HRESULT
MediaCaptureWrapper::enumrateFrameSourceGroup
(std::vector<GstWinRTMediaFrameSourceGroup> &groupList)
{
ComPtr<IMediaFrameSourceGroupStatics> frame_source_group_statics;
ComPtr<IAsyncOperation<IVectorView<MediaFrameSourceGroup*>*>> async_op;
ComPtr<IVectorView<MediaFrameSourceGroup*>> source_group_list;
HRESULT hr;
unsigned int cnt = 0;
HStringReference hstr_frame_source_group =
HStringReference (
RuntimeClass_Windows_Media_Capture_Frames_MediaFrameSourceGroup);
groupList.clear();
hr = GetActivationFactory (hstr_frame_source_group.Get(),
&frame_source_group_statics);
if (!gst_mf_result(hr))
return hr;
hr = frame_source_group_statics->FindAllAsync (&async_op);
if (!gst_mf_result(hr))
return hr;
hr = SyncWait<IVectorView<MediaFrameSourceGroup*>*>(async_op.Get(), 5000);
if (!gst_mf_result(hr))
return hr;
hr = async_op->GetResults (&source_group_list);
if (!gst_mf_result(hr))
return hr;
hr = source_group_list->get_Size (&cnt);
if (!gst_mf_result(hr))
return hr;
if (cnt == 0) {
GST_WARNING ("No available source group");
return E_FAIL;
}
GST_DEBUG("Have %u source group", cnt);
for (unsigned int i = 0; i < cnt; i++) {
ComPtr<IMediaFrameSourceGroup> group;
hr = source_group_list->GetAt (i, &group);
if (!gst_mf_result(hr))
continue;
GstWinRTMediaFrameSourceGroup source_group;
hr = source_group.Fill(group);
if (!gst_mf_result (hr))
continue;
groupList.push_back (source_group);
}
if (groupList.empty ()) {
GST_WARNING("No available source group");
return E_FAIL;
}
return S_OK;
}