gstreamer/subprojects/gst-plugins-bad/ext/wpe/gstwpethreadedview.cpp

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/* Copyright (C) <2018, 2019, 2020> Philippe Normand <philn@igalia.com>
* Copyright (C) <2018> Žan Doberšek <zdobersek@igalia.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 "gstwpe.h"
#include "gstwpesrcbin.h"
#include "gstwpethreadedview.h"
#include <gst/gl/gl.h>
#include <gst/gl/egl/gsteglimage.h>
#include <gst/gl/egl/gstgldisplay_egl.h>
#include <wayland-server.h>
#include <cstdio>
#include <mutex>
#include <wpe/unstable/fdo-shm.h>
GST_DEBUG_CATEGORY_EXTERN (wpe_view_debug);
#define GST_CAT_DEFAULT wpe_view_debug
class GMutexHolder {
public:
GMutexHolder(GMutex& mutex)
: m(mutex)
{
g_mutex_lock(&m);
}
~GMutexHolder()
{
g_mutex_unlock(&m);
}
private:
GMutex& m;
};
static GstWPEContextThread *s_view = NULL;
GstWPEContextThread& GstWPEContextThread::singleton()
{
static gsize initialized = 0;
if (g_once_init_enter (&initialized)) {
s_view = new GstWPEContextThread;
g_once_init_leave (&initialized, 1);
}
return *s_view;
}
GstWPEContextThread::GstWPEContextThread()
{
g_mutex_init(&threading.mutex);
g_cond_init(&threading.cond);
{
GMutexHolder lock(threading.mutex);
threading.thread = g_thread_new("GstWPEContextThread", s_viewThread, this);
while (!threading.ready) {
g_cond_wait(&threading.cond, &threading.mutex);
}
GST_DEBUG("thread spawned");
}
}
GstWPEContextThread::~GstWPEContextThread()
{
if (threading.thread) {
g_thread_unref(threading.thread);
threading.thread = nullptr;
}
g_mutex_clear(&threading.mutex);
g_cond_clear(&threading.cond);
}
template<typename Function>
void GstWPEContextThread::dispatch(Function func)
{
struct Job {
Job(Function& f)
: func(f)
{
g_mutex_init(&mutex);
g_cond_init(&cond);
dispatched = FALSE;
}
~Job() {
g_mutex_clear(&mutex);
g_cond_clear(&cond);
}
void dispatch() {
GMutexHolder lock(mutex);
func();
dispatched = TRUE;
g_cond_signal(&cond);
}
void waitCompletion() {
GMutexHolder lock(mutex);
while(!dispatched) {
g_cond_wait(&cond, &mutex);
}
}
Function& func;
GMutex mutex;
GCond cond;
gboolean dispatched;
};
struct Job job(func);
GSource* source = g_idle_source_new();
g_source_set_callback(source, [](gpointer data) -> gboolean {
auto* job = static_cast<struct Job*>(data);
job->dispatch();
return G_SOURCE_REMOVE;
}, &job, nullptr);
g_source_set_priority(source, G_PRIORITY_DEFAULT);
g_source_attach(source, glib.context);
job.waitCompletion();
g_source_unref(source);
}
gpointer GstWPEContextThread::s_viewThread(gpointer data)
{
auto& view = *static_cast<GstWPEContextThread*>(data);
view.glib.context = g_main_context_new();
view.glib.loop = g_main_loop_new(view.glib.context, FALSE);
g_main_context_push_thread_default(view.glib.context);
{
GSource* source = g_idle_source_new();
g_source_set_callback(source,
[](gpointer data) -> gboolean {
auto& view = *static_cast<GstWPEContextThread*>(data);
GMutexHolder lock(view.threading.mutex);
view.threading.ready = TRUE;
g_cond_signal(&view.threading.cond);
return G_SOURCE_REMOVE;
},
&view, nullptr);
g_source_attach(source, view.glib.context);
g_source_unref(source);
}
g_main_loop_run(view.glib.loop);
g_main_loop_unref(view.glib.loop);
view.glib.loop = nullptr;
g_main_context_pop_thread_default(view.glib.context);
g_main_context_unref(view.glib.context);
view.glib.context = nullptr;
return nullptr;
}
#ifdef G_OS_UNIX
static void
initialize_web_extensions (WebKitWebContext *context)
{
const gchar *local_path = gst_wpe_get_devenv_extension_path ();
const gchar *path = g_file_test (local_path, G_FILE_TEST_IS_DIR) ? local_path : G_STRINGIFY (WPE_EXTENSION_INSTALL_DIR);
GST_INFO ("Loading WebExtension from %s", path);
#if USE_WPE2
webkit_web_context_set_web_process_extensions_directory (context, path);
#else
webkit_web_context_set_web_extensions_directory (context, path);
#endif
}
static void
webkit_extension_gerror_msg_received (GstWpeSrc *src, GVariant *params)
{
GstStructure *structure;
GstMessage *forwarded;
const gchar *src_path, *src_type, *src_name, *error_domain, *msg, *debug_str, *details_str;
gint message_type;
guint32 error_code;
g_variant_get (params, "(issssusss)",
&message_type,
&src_type,
&src_name,
&src_path,
&error_domain,
&error_code,
&msg,
&debug_str,
&details_str
);
GError *error = g_error_new(g_quark_from_string(error_domain), error_code, "%s", msg);
GstStructure *details = (details_str[0] != '\0') ? gst_structure_new_from_string(details_str) : NULL;
gchar * our_message = g_strdup_printf(
"`%s` posted from %s running inside the web page",
debug_str, src_path
);
if (message_type == GST_MESSAGE_ERROR) {
forwarded =
gst_message_new_error_with_details(GST_OBJECT(src), error,
our_message, details);
} else if (message_type == GST_MESSAGE_WARNING) {
forwarded =
gst_message_new_warning_with_details(GST_OBJECT(src), error,
our_message, details);
} else {
forwarded =
gst_message_new_info_with_details(GST_OBJECT(src), error, our_message, details);
}
structure = gst_structure_new ("WpeForwarded",
"message", GST_TYPE_MESSAGE, forwarded,
"wpe-original-src-name", G_TYPE_STRING, src_name,
"wpe-original-src-type", G_TYPE_STRING, src_type,
"wpe-original-src-path", G_TYPE_STRING, src_path,
NULL
);
g_free (our_message);
gst_element_post_message(GST_ELEMENT(src), gst_message_new_custom(GST_MESSAGE_ELEMENT,
GST_OBJECT(src), structure));
g_error_free(error);
gst_message_unref (forwarded);
}
static void
webkit_extension_bus_message_received (GstWpeSrc *src, GVariant *params)
{
GstStructure *original_structure, *structure;
const gchar *src_name, *src_type, *src_path, *struct_str;
GstMessageType message_type;
GstMessage *forwarded;
g_variant_get (params, "(issss)",
&message_type,
&src_name,
&src_type,
&src_path,
&struct_str
);
original_structure = (struct_str[0] != '\0') ? gst_structure_new_from_string(struct_str) : NULL;
if (!original_structure)
{
if (struct_str[0] != '\0')
GST_ERROR_OBJECT(src, "Could not deserialize: %s", struct_str);
original_structure = gst_structure_new_empty("wpesrc");
}
forwarded = gst_message_new_custom(message_type,
GST_OBJECT (src), original_structure);
structure = gst_structure_new ("WpeForwarded",
"message", GST_TYPE_MESSAGE, forwarded,
"wpe-original-src-name", G_TYPE_STRING, src_name,
"wpe-original-src-type", G_TYPE_STRING, src_type,
"wpe-original-src-path", G_TYPE_STRING, src_path,
NULL
);
gst_element_post_message(GST_ELEMENT(src), gst_message_new_custom(GST_MESSAGE_ELEMENT,
GST_OBJECT(src), structure));
gst_message_unref (forwarded);
}
static gboolean
webkit_extension_msg_received (WebKitWebContext *context,
WebKitUserMessage *message,
GstWpeSrc *src)
{
const gchar *name = webkit_user_message_get_name (message);
GVariant *params = webkit_user_message_get_parameters (message);
gboolean res = TRUE;
GST_TRACE_OBJECT(src, "Handling message %s", name);
if (!g_strcmp0(name, "gstwpe.new_stream")) {
guint32 id = g_variant_get_uint32 (g_variant_get_child_value (params, 0));
const gchar *capsstr = g_variant_get_string (g_variant_get_child_value (params, 1), NULL);
GstCaps *caps = gst_caps_from_string (capsstr);
const gchar *stream_id = g_variant_get_string (g_variant_get_child_value (params, 2), NULL);
gst_wpe_src_new_audio_stream(src, id, caps, stream_id);
gst_caps_unref (caps);
} else if (!g_strcmp0(name, "gstwpe.set_shm")) {
auto fdlist = webkit_user_message_get_fd_list (message);
gint id = g_variant_get_uint32 (g_variant_get_child_value (params, 0));
gst_wpe_src_set_audio_shm (src, fdlist, id);
} else if (!g_strcmp0(name, "gstwpe.new_buffer")) {
guint32 id = g_variant_get_uint32 (g_variant_get_child_value (params, 0));
guint64 size = g_variant_get_uint64 (g_variant_get_child_value (params, 1));
gst_wpe_src_push_audio_buffer (src, id, size);
webkit_user_message_send_reply(message, webkit_user_message_new ("gstwpe.buffer_processed", NULL));
} else if (!g_strcmp0(name, "gstwpe.pause")) {
guint32 id = g_variant_get_uint32 (params);
gst_wpe_src_pause_audio_stream (src, id);
} else if (!g_strcmp0(name, "gstwpe.stop")) {
guint32 id = g_variant_get_uint32 (params);
gst_wpe_src_stop_audio_stream (src, id);
} else if (!g_strcmp0(name, "gstwpe.bus_gerror_message")) {
webkit_extension_gerror_msg_received (src, params);
} else if (!g_strcmp0(name, "gstwpe.bus_message")) {
webkit_extension_bus_message_received (src, params);
} else if (!g_strcmp0(name, "gstwpe.console_message")) {
const gchar *message = g_variant_get_string (g_variant_get_child_value (params, 0), NULL);
GstStructure *structure = gst_structure_new ("wpe-console-message",
"message", G_TYPE_STRING, message,
NULL);
gst_element_post_message(GST_ELEMENT(src), gst_message_new_custom(GST_MESSAGE_ELEMENT,
GST_OBJECT(src), structure));
} else {
res = FALSE;
g_error("Unknown event: %s", name);
}
return res;
}
#endif
GstWPEThreadedView* GstWPEContextThread::createWPEView(GstWpeVideoSrc* src, GstGLContext* context, GstGLDisplay* display, int width, int height)
{
GST_DEBUG("context %p display %p, size (%d,%d)", context, display, width, height);
static std::once_flag s_loaderFlag;
std::call_once(s_loaderFlag,
[] {
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wpe_loader_init("libWPEBackend-fdo-1.0.so");
});
GstWPEThreadedView* view = nullptr;
dispatch([&]() mutable {
if (!glib.web_context) {
#if USE_WPE2
glib.web_context = WEBKIT_WEB_CONTEXT(g_object_new(WEBKIT_TYPE_WEB_CONTEXT, nullptr));
#else
auto *manager = webkit_website_data_manager_new(NULL);
glib.web_context =
webkit_web_context_new_with_website_data_manager(manager);
g_object_unref(manager);
#endif
}
view = new GstWPEThreadedView(glib.web_context, src, context, display, width, height);
});
if (view && view->hasUri()) {
GST_DEBUG("waiting load to finish");
view->waitLoadCompletion();
GST_DEBUG("done");
}
return view;
}
static gboolean s_loadFailed(WebKitWebView*, WebKitLoadEvent, gchar* failing_uri, GError* error, gpointer data)
{
GstWpeVideoSrc* src = GST_WPE_VIDEO_SRC(data);
if (g_error_matches(error, WEBKIT_NETWORK_ERROR, WEBKIT_NETWORK_ERROR_CANCELLED)) {
GST_INFO_OBJECT (src, "Loading cancelled.");
return FALSE;
}
GST_ELEMENT_ERROR (GST_ELEMENT_CAST(src), RESOURCE, FAILED, (NULL), ("Failed to load %s (%s)", failing_uri, error->message));
return FALSE;
}
static gboolean s_loadFailedWithTLSErrors(WebKitWebView*, gchar* failing_uri, GTlsCertificate*, GTlsCertificateFlags, gpointer data)
{
// Defer to load-failed.
return FALSE;
}
static void s_loadProgressChanged(GObject* object, GParamSpec*, gpointer data)
{
GstElement* src = GST_ELEMENT_CAST (data);
// The src element is locked already so we can't call
// gst_element_post_message(). Instead retrieve the bus manually and use it
// directly.
GstBus* bus = GST_ELEMENT_BUS (src);
double estimatedProgress;
g_object_get(object, "estimated-load-progress", &estimatedProgress, nullptr);
gst_object_ref (bus);
gst_bus_post (bus, gst_message_new_element(GST_OBJECT_CAST(src), gst_structure_new("wpe-stats", "estimated-load-progress", G_TYPE_DOUBLE, estimatedProgress * 100, nullptr)));
gst_object_unref (bus);
}
static void s_webProcessCrashed(WebKitWebView*, WebKitWebProcessTerminationReason reason, gpointer data)
{
auto &view = *static_cast<GstWPEThreadedView *>(data);
auto *src = view.src();
gchar *reason_str =
g_enum_to_string (WEBKIT_TYPE_WEB_PROCESS_TERMINATION_REASON, reason);
// In case the crash happened while doing the initial URL loading, unlock
// the load completion waiting.
view.notifyLoadFinished();
// TODO: Emit a signal here and fallback to error system if signal wasn't handled by application?
GST_ELEMENT_ERROR(GST_ELEMENT_CAST(src), RESOURCE, FAILED, (NULL), ("%s", reason_str));
g_free (reason_str);
}
GstWPEThreadedView::GstWPEThreadedView(WebKitWebContext* web_context, GstWpeVideoSrc* src, GstGLContext* context, GstGLDisplay* display, int width, int height)
: m_src(src)
{
#ifdef G_OS_UNIX
{
GstObject *parent = gst_object_get_parent (GST_OBJECT (src));
if (parent && GST_IS_WPE_SRC (parent)) {
audio.init_ext_sigid = g_signal_connect (web_context,
#if USE_WPE2
"initialize-web-process-extensions",
#else
"initialize-web-extensions",
#endif
G_CALLBACK (initialize_web_extensions),
NULL);
audio.extension_msg_sigid = g_signal_connect (web_context,
"user-message-received",
G_CALLBACK (webkit_extension_msg_received),
parent);
GST_INFO_OBJECT (parent, "Enabled audio");
}
gst_clear_object (&parent);
}
#endif // G_OS_UNIX
g_mutex_init(&threading.ready_mutex);
g_cond_init(&threading.ready_cond);
threading.ready = FALSE;
g_mutex_init(&images_mutex);
if (context)
gst.context = GST_GL_CONTEXT(gst_object_ref(context));
if (display) {
gst.display = GST_GL_DISPLAY(gst_object_ref(display));
}
wpe.width = width;
wpe.height = height;
if (context && display) {
if (gst_gl_context_get_gl_platform(context) == GST_GL_PLATFORM_EGL) {
gst.display_egl = gst_gl_display_egl_from_gl_display (gst.display);
} else {
GST_DEBUG ("Available GStreamer GL Context is not EGL - not creating an EGL display from it");
}
}
if (gst.display_egl) {
EGLDisplay eglDisplay = (EGLDisplay)gst_gl_display_get_handle (GST_GL_DISPLAY(gst.display_egl));
GST_DEBUG("eglDisplay %p", eglDisplay);
m_isValid = wpe_fdo_initialize_for_egl_display(eglDisplay);
GST_DEBUG("FDO EGL display initialisation result: %d", m_isValid);
} else {
m_isValid = wpe_fdo_initialize_shm();
GST_DEBUG("FDO SHM initialisation result: %d", m_isValid);
}
if (!m_isValid)
return;
if (gst.display_egl) {
wpe.exportable = wpe_view_backend_exportable_fdo_egl_create(&s_exportableEGLClient, this, wpe.width, wpe.height);
} else {
wpe.exportable = wpe_view_backend_exportable_fdo_create(&s_exportableClient, this, wpe.width, wpe.height);
}
auto* wpeViewBackend = wpe_view_backend_exportable_fdo_get_view_backend(wpe.exportable);
auto* viewBackend = webkit_web_view_backend_new(wpeViewBackend, (GDestroyNotify) wpe_view_backend_exportable_fdo_destroy, wpe.exportable);
wpe_view_backend_add_activity_state(wpeViewBackend, wpe_view_activity_state_visible | wpe_view_activity_state_focused | wpe_view_activity_state_in_window);
webkit.view = WEBKIT_WEB_VIEW(g_object_new(WEBKIT_TYPE_WEB_VIEW,
"web-context", web_context,
"backend", viewBackend,
nullptr));
g_signal_connect(webkit.view, "load-failed", G_CALLBACK(s_loadFailed), src);
g_signal_connect(webkit.view, "load-failed-with-tls-errors", G_CALLBACK(s_loadFailedWithTLSErrors), src);
g_signal_connect(webkit.view, "notify::estimated-load-progress", G_CALLBACK(s_loadProgressChanged), src);
g_signal_connect(webkit.view, "web-process-terminated", G_CALLBACK(s_webProcessCrashed), this);
auto* settings = webkit_web_view_get_settings(webkit.view);
webkit_settings_set_enable_webaudio(settings, TRUE);
gst_wpe_video_src_configure_web_view(src, webkit.view);
gchar* location;
gboolean drawBackground = TRUE;
g_object_get(src, "location", &location, "draw-background", &drawBackground, nullptr);
setDrawBackground(drawBackground);
if (location) {
loadUriUnlocked(location);
g_free(location);
}
}
GstWPEThreadedView::~GstWPEThreadedView()
{
GstEGLImage *egl_pending = NULL;
GstEGLImage *egl_committed = NULL;
GstBuffer *shm_pending = NULL;
GstBuffer *shm_committed = NULL;
GST_TRACE ("%p destroying", this);
g_mutex_clear(&threading.ready_mutex);
g_cond_clear(&threading.ready_cond);
{
GMutexHolder lock(images_mutex);
if (egl.pending) {
egl_pending = egl.pending;
egl.pending = nullptr;
}
if (egl.committed) {
egl_committed = egl.committed;
egl.committed = nullptr;
}
if (shm.pending) {
GST_TRACE ("%p freeing shm pending %" GST_PTR_FORMAT, this, shm.pending);
shm_pending = shm.pending;
shm.pending = nullptr;
}
if (shm.committed) {
GST_TRACE ("%p freeing shm commited %" GST_PTR_FORMAT, this, shm.committed);
shm_committed = shm.committed;
shm.committed = nullptr;
}
}
if (egl_pending)
gst_egl_image_unref (egl_pending);
if (egl_committed)
gst_egl_image_unref (egl_committed);
if (shm_pending)
gst_buffer_unref (shm_pending);
if (shm_committed)
gst_buffer_unref (shm_committed);
if (audio.init_ext_sigid) {
WebKitWebContext* web_context = webkit_web_view_get_context (webkit.view);
g_signal_handler_disconnect(web_context, audio.init_ext_sigid);
g_signal_handler_disconnect(web_context, audio.extension_msg_sigid);
audio.init_ext_sigid = 0;
audio.extension_msg_sigid = 0;
}
GstWPEContextThread::singleton().dispatch([&]() {
if (webkit.view) {
g_object_unref(webkit.view);
webkit.view = nullptr;
}
});
if (gst.display_egl) {
gst_object_unref(gst.display_egl);
gst.display_egl = nullptr;
}
if (gst.display) {
gst_object_unref(gst.display);
gst.display = nullptr;
}
if (gst.context) {
gst_object_unref(gst.context);
gst.context = nullptr;
}
if (webkit.uri) {
g_free(webkit.uri);
webkit.uri = nullptr;
}
g_mutex_clear(&images_mutex);
GST_TRACE ("%p destroyed", this);
}
void GstWPEThreadedView::notifyLoadFinished()
{
GMutexHolder lock(threading.ready_mutex);
if (!threading.ready) {
threading.ready = TRUE;
g_cond_signal(&threading.ready_cond);
}
}
void GstWPEThreadedView::waitLoadCompletion()
{
GMutexHolder lock(threading.ready_mutex);
while (!threading.ready)
g_cond_wait(&threading.ready_cond, &threading.ready_mutex);
}
GstEGLImage* GstWPEThreadedView::image()
{
GstEGLImage* ret = nullptr;
bool dispatchFrameComplete = false;
GstEGLImage *prev_image = NULL;
{
GMutexHolder lock(images_mutex);
GST_TRACE("pending %" GST_PTR_FORMAT " (%d) committed %" GST_PTR_FORMAT " (%d)", egl.pending,
GST_IS_EGL_IMAGE(egl.pending) ? GST_MINI_OBJECT_REFCOUNT_VALUE(GST_MINI_OBJECT_CAST(egl.pending)) : 0,
egl.committed,
GST_IS_EGL_IMAGE(egl.committed) ? GST_MINI_OBJECT_REFCOUNT_VALUE(GST_MINI_OBJECT_CAST(egl.committed)) : 0);
if (egl.pending) {
prev_image = egl.committed;
egl.committed = egl.pending;
egl.pending = nullptr;
dispatchFrameComplete = true;
}
if (egl.committed)
ret = egl.committed;
}
if (prev_image)
gst_egl_image_unref(prev_image);
if (dispatchFrameComplete)
frameComplete();
return ret;
}
GstBuffer* GstWPEThreadedView::buffer()
{
GstBuffer* ret = nullptr;
bool dispatchFrameComplete = false;
GstBuffer *prev_image = NULL;
{
GMutexHolder lock(images_mutex);
GST_TRACE("pending %" GST_PTR_FORMAT " (%d) committed %" GST_PTR_FORMAT " (%d)", shm.pending,
GST_IS_BUFFER(shm.pending) ? GST_MINI_OBJECT_REFCOUNT_VALUE(GST_MINI_OBJECT_CAST(shm.pending)) : 0,
shm.committed,
GST_IS_BUFFER(shm.committed) ? GST_MINI_OBJECT_REFCOUNT_VALUE(GST_MINI_OBJECT_CAST(shm.committed)) : 0);
if (shm.pending) {
prev_image = shm.committed;
shm.committed = shm.pending;
shm.pending = nullptr;
dispatchFrameComplete = true;
}
if (shm.committed)
ret = shm.committed;
}
if (prev_image)
gst_buffer_unref(prev_image);
if (dispatchFrameComplete)
frameComplete();
return ret;
}
void GstWPEThreadedView::resize(int width, int height)
{
GST_DEBUG("resize to %dx%d", width, height);
wpe.width = width;
wpe.height = height;
s_view->dispatch([&]() {
if (wpe.exportable && wpe_view_backend_exportable_fdo_get_view_backend(wpe.exportable))
wpe_view_backend_dispatch_set_size(wpe_view_backend_exportable_fdo_get_view_backend(wpe.exportable), wpe.width, wpe.height);
});
}
void GstWPEThreadedView::frameComplete()
{
GST_TRACE("frame complete");
s_view->dispatch([&]() {
GST_TRACE("dispatching");
wpe_view_backend_exportable_fdo_dispatch_frame_complete(wpe.exportable);
});
}
void GstWPEThreadedView::loadUriUnlocked(const gchar* uri)
{
if (webkit.uri)
g_free(webkit.uri);
2019-01-31 16:30:18 +00:00
GST_DEBUG("loading %s", uri);
webkit.uri = g_strdup(uri);
webkit_web_view_load_uri(webkit.view, webkit.uri);
}
void GstWPEThreadedView::loadUri(const gchar* uri)
{
s_view->dispatch([&]() {
loadUriUnlocked(uri);
});
}
static void s_runJavascriptFinished(GObject* object, GAsyncResult* result, gpointer user_data)
{
GError *error = NULL;
#if USE_WPE2
g_autoptr(JSCValue) js_result = webkit_web_view_evaluate_javascript_finish(
#else
g_autoptr(WebKitJavascriptResult) js_result = webkit_web_view_run_javascript_finish(
#endif
WEBKIT_WEB_VIEW(object), result, &error);
// TODO: Pass result back to signal call site using a GstPromise?
(void) js_result;
if (error) {
GST_WARNING("Error running javascript: %s", error->message);
g_error_free(error);
}
}
void GstWPEThreadedView::runJavascript(const char* script)
{
s_view->dispatch([&]() {
#if USE_WPE2
webkit_web_view_evaluate_javascript(webkit.view, script, -1, nullptr, nullptr, nullptr,
s_runJavascriptFinished, nullptr);
#else
webkit_web_view_run_javascript(webkit.view, script, nullptr, s_runJavascriptFinished, nullptr);
#endif
});
}
void GstWPEThreadedView::loadData(GBytes* bytes)
{
s_view->dispatch([this, bytes = g_bytes_ref(bytes)]() {
webkit_web_view_load_bytes(webkit.view, bytes, nullptr, nullptr, nullptr);
g_bytes_unref(bytes);
});
}
void GstWPEThreadedView::setDrawBackground(gboolean drawsBackground)
{
GST_DEBUG("%s background rendering", drawsBackground ? "Enabling" : "Disabling");
WebKitColor color;
webkit_color_parse(&color, drawsBackground ? "white" : "transparent");
webkit_web_view_set_background_color(webkit.view, &color);
}
void GstWPEThreadedView::releaseImage(gpointer imagePointer)
{
s_view->dispatch([&]() {
GST_TRACE("Dispatch release exported image %p", imagePointer);
wpe_view_backend_exportable_fdo_egl_dispatch_release_exported_image(wpe.exportable,
static_cast<struct wpe_fdo_egl_exported_image*>(imagePointer));
});
}
struct ImageContext {
GstWPEThreadedView* view;
gpointer image;
};
void GstWPEThreadedView::handleExportedImage(gpointer image)
{
ImageContext* imageContext = g_new (ImageContext, 1);
imageContext->view = this;
imageContext->image = static_cast<gpointer>(image);
EGLImageKHR eglImage = wpe_fdo_egl_exported_image_get_egl_image(static_cast<struct wpe_fdo_egl_exported_image*>(image));
auto* gstImage = gst_egl_image_new_wrapped(gst.context, eglImage, GST_GL_RGBA, imageContext, s_releaseImage);
{
GMutexHolder lock(images_mutex);
GST_TRACE("EGLImage %p wrapped in GstEGLImage %" GST_PTR_FORMAT, eglImage, gstImage);
gst_clear_mini_object ((GstMiniObject **) &egl.pending);
egl.pending = gstImage;
notifyLoadFinished();
}
}
struct SHMBufferContext {
GstWPEThreadedView* view;
struct wpe_fdo_shm_exported_buffer* buffer;
};
void GstWPEThreadedView::releaseSHMBuffer(gpointer data)
{
SHMBufferContext* context = static_cast<SHMBufferContext*>(data);
s_view->dispatch([&]() {
auto* buffer = static_cast<struct wpe_fdo_shm_exported_buffer*>(context->buffer);
GST_TRACE("Dispatch release exported buffer %p", buffer);
wpe_view_backend_exportable_fdo_dispatch_release_shm_exported_buffer(wpe.exportable, buffer);
});
}
void GstWPEThreadedView::s_releaseSHMBuffer(gpointer data)
{
SHMBufferContext* context = static_cast<SHMBufferContext*>(data);
context->view->releaseSHMBuffer(data);
g_free (context);
}
void GstWPEThreadedView::handleExportedBuffer(struct wpe_fdo_shm_exported_buffer* buffer)
{
struct wl_shm_buffer* shmBuffer = wpe_fdo_shm_exported_buffer_get_shm_buffer(buffer);
auto format = wl_shm_buffer_get_format(shmBuffer);
if (format != WL_SHM_FORMAT_ARGB8888 && format != WL_SHM_FORMAT_XRGB8888) {
GST_ERROR("Unsupported pixel format: %d", format);
return;
}
int32_t width = wl_shm_buffer_get_width(shmBuffer);
int32_t height = wl_shm_buffer_get_height(shmBuffer);
gint stride = wl_shm_buffer_get_stride(shmBuffer);
gsize size = width * height * 4;
auto* data = static_cast<uint8_t*>(wl_shm_buffer_get_data(shmBuffer));
SHMBufferContext* bufferContext = g_new (SHMBufferContext, 1);
bufferContext->view = this;
bufferContext->buffer = buffer;
auto* gstBuffer = gst_buffer_new_wrapped_full(GST_MEMORY_FLAG_READONLY, data, size, 0, size, bufferContext, s_releaseSHMBuffer);
gsize offsets[1];
gint strides[1];
offsets[0] = 0;
strides[0] = stride;
gst_buffer_add_video_meta_full(gstBuffer, GST_VIDEO_FRAME_FLAG_NONE, GST_VIDEO_FORMAT_BGRA, width, height, 1, offsets, strides);
{
GMutexHolder lock(images_mutex);
GST_TRACE("SHM buffer %p wrapped in buffer %" GST_PTR_FORMAT, buffer, gstBuffer);
gst_clear_buffer (&shm.pending);
shm.pending = gstBuffer;
notifyLoadFinished();
}
}
struct wpe_view_backend_exportable_fdo_egl_client GstWPEThreadedView::s_exportableEGLClient = {
// export_egl_image
nullptr,
[](void* data, struct wpe_fdo_egl_exported_image* image) {
auto& view = *static_cast<GstWPEThreadedView*>(data);
view.handleExportedImage(static_cast<gpointer>(image));
},
nullptr,
// padding
nullptr, nullptr
};
struct wpe_view_backend_exportable_fdo_client GstWPEThreadedView::s_exportableClient = {
nullptr,
nullptr,
// export_shm_buffer
[](void* data, struct wpe_fdo_shm_exported_buffer* buffer) {
auto& view = *static_cast<GstWPEThreadedView*>(data);
view.handleExportedBuffer(buffer);
},
nullptr,
nullptr,
};
void GstWPEThreadedView::s_releaseImage(GstEGLImage* image, gpointer data)
{
ImageContext* context = static_cast<ImageContext*>(data);
context->view->releaseImage(context->image);
g_free (context);
}
struct wpe_view_backend* GstWPEThreadedView::backend() const
{
return wpe.exportable ? wpe_view_backend_exportable_fdo_get_view_backend(wpe.exportable) : nullptr;
}
void GstWPEThreadedView::dispatchKeyboardEvent(struct wpe_input_keyboard_event& wpe_event)
{
s_view->dispatch([&]() {
wpe_view_backend_dispatch_keyboard_event(backend(), &wpe_event);
});
}
void GstWPEThreadedView::dispatchPointerEvent(struct wpe_input_pointer_event& wpe_event)
{
s_view->dispatch([&]() {
wpe_view_backend_dispatch_pointer_event(backend(), &wpe_event);
});
}
void GstWPEThreadedView::dispatchAxisEvent(struct wpe_input_axis_event& wpe_event)
{
s_view->dispatch([&]() {
wpe_view_backend_dispatch_axis_event(backend(), &wpe_event);
});
}
void GstWPEThreadedView::dispatchTouchEvent(struct wpe_input_touch_event& wpe_event)
{
s_view->dispatch([&]() {
wpe_view_backend_dispatch_touch_event(backend(), &wpe_event);
});
}