gstreamer/sys/mediafoundation/mediacapturewrapper.cpp
Seungha Yang 3fb8caf635 mfvideosrc: Handle I420/IYUV subtypes for UWP cases
Microsoft defines two I420 formats, one is I420, and the other is
IYUV (but both are same, just names are different).
Since both will be converted to GST_VIDEO_FORMAT_I420,
we should check both I420 and IYUV subtypes during
GstVideoFormat to Microsoft's format conversion.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1478>
2020-08-01 15:17:05 +00:00

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27 KiB
C++

/* 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 ||
g_ascii_strcasecmp (subtype.c_str(), "I420") == 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,
unsigned int info_index, unsigned int desc_index)
{
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_LOG ("source-info %d, desc %d, unhandled subtype %s",
info_index, desc_index, 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;
GST_LOG ("source-info %d, desc %d, %" GST_PTR_FORMAT,
info_index, desc_index, 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, unsigned int index)
{
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 ("source-group %d, Emptry source group id", index);
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 ("source-group %d, Empty display name", index);
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 %d has %d entries", index, 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;
std::string source_id_str;
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-group %d, source-info %d, non-color source kind %d",
index, i, (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) {
GST_FIXME ("source-group %d, source-info %d, "
"type %d is not VideoPreview or VideoRecord",
index, i, (gint) source_type);
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-group %d, source-info %d, empty media description",
index, i);
continue;
}
source_id_str = convert_hstring_to_string (&source_id);
GST_DEBUG ("source-group %d, source-info %d, source-id %s source-type %d, "
"has %d desc", index, i, source_id_str.c_str (), (gint) source_type,
desc_count);
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, i, j);
if (FAILED (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(gpointer dispatcher)
: user_data_(nullptr)
{
user_cb_.frame_arrived = nullptr;
user_cb_.failed = nullptr;
if (dispatcher) {
ComPtr<IInspectable> inspectable =
reinterpret_cast<IInspectable*> (dispatcher);
HRESULT hr;
hr = inspectable.As (&dispatcher_);
if (gst_mf_result (hr))
GST_INFO("Main UI dispatcher is available");
}
}
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)
{
return enumrateFrameSourceGroup (group_list);
}
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;
return startCapture ();
}
HRESULT
MediaCaptureWrapper::StopCapture()
{
return stopCapture ();
}
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;
bool is_I420_subtype = false;
std::string target_subtype;
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 %" GST_PTR_FORMAT " to videoinfo",
media_desc_->caps_);
hr = E_FAIL;
goto done;
}
/* Windows defines two I420 format, one is I420 and the other is IYUV.
* So, if requested video format was I420, we should accept both I420 and
* IYUV formats */
is_I420_subtype = GST_VIDEO_INFO_FORMAT (&videoInfo) == GST_VIDEO_FORMAT_I420;
target_subtype = convert_hstring_to_string (&media_desc_->subtype_);
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;
}
GST_DEBUG ("Has %d available formats", count);
GST_INFO ("Finding matching IMediaFrameFormat with %" GST_PTR_FORMAT,
media_desc_->caps_);
#ifndef GST_DISABLE_GST_DEBUG
if (gst_debug_category_get_threshold (GST_CAT_DEFAULT) >= GST_LEVEL_LOG) {
GST_LOG ("Dump IMediaFrameFormat list");
for (UINT32 i = 0; i < count; i++) {
ComPtr<IMediaFrameFormat> fmt;
ComPtr<IVideoMediaFrameFormat> videoFmt;
ComPtr<IMediaRatio> ratio;
HString subtype;
UINT32 width = 0;
UINT32 height = 0;
UINT32 fps_n = 0;
UINT32 fps_d = 1;
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;
hr = fmt->get_FrameRate (&ratio);
if (!gst_mf_result (hr))
continue;
hr = ratio->get_Numerator (&fps_n);
if (!gst_mf_result (hr))
continue;
hr = ratio->get_Denominator (&fps_d);
if (!gst_mf_result (hr))
continue;
hr = fmt->get_Subtype (subtype.GetAddressOf ());
if (!gst_mf_result (hr))
continue;
std::string cur_subtype = convert_hstring_to_string (&subtype);
GST_LOG ("\tIMediaFrameFormat[%d] subtpye: %s, resolution: %dx%d, "
"framerate: %d/%d", i, cur_subtype.c_str (), width, height, fps_n,
fps_d);
}
}
#endif
/* 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) ||
height != GST_VIDEO_INFO_HEIGHT (&videoInfo)) {
GST_DEBUG ("IMediaFrameFormat[%d], resolution %dx%d is not equal to "
"target resolution %dx%d", i, width, height,
GST_VIDEO_INFO_WIDTH (&videoInfo),
GST_VIDEO_INFO_HEIGHT (&videoInfo));
continue;
}
/* TODO: check major type for audio */
hr = fmt->get_Subtype (subtype.GetAddressOf ());
if (!gst_mf_result (hr))
continue;
std::string cur_subtype = convert_hstring_to_string (&subtype);
if (is_I420_subtype) {
/* Special handling for I420 */
if (cur_subtype != "I420" && cur_subtype != "IYUV") {
GST_LOG ("IMediaFrameFormat[%d], subtype %s is not equal to target %s",
i, cur_subtype.c_str (), target_subtype.c_str ());
continue;
}
} else if (cur_subtype != target_subtype) {
GST_LOG ("IMediaFrameFormat[%d], subtype %s is not equal to target %s",
i, cur_subtype.c_str (), target_subtype.c_str ());
continue;
}
format = fmt;
break;
}
if (!format) {
GST_ERROR (
"Couldn't find matching IMediaFrameFormat interface for %"
GST_PTR_FORMAT, media_desc_->caps_);
hr = E_FAIL;
goto done;
} else {
GST_INFO ("Found matching IMediaFrameFormat");
}
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;
}
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, i);
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;
}
HRESULT
FindCoreDispatcherForCurrentThread (ICoreDispatcher ** dispatcher)
{
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 (FAILED (hr))
return hr;
ComPtr<ICoreApplicationView> core_app_view;
hr = core_app->GetCurrentView (&core_app_view);
if (FAILED (hr))
return hr;
ComPtr<ICoreWindow> core_window;
hr = core_app_view->get_CoreWindow (&core_window);
if (FAILED (hr))
return hr;
return core_window->get_Dispatcher (dispatcher);
}