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webkit / WebKit / d0e9359bbbbbe54170cea1569c9fb736cfa3bccd / . / Source / WebCore / platform / graphics / gstreamer / WebKitWebSourceGStreamer.cpp
blob: 5d86fb1af487c0289e001255965c31dcda973426 [file] [log] [blame]
/*
* Copyright (C) 2009, 2010 Sebastian Dröge <sebastian.droege@collabora.co.uk>
* Copyright (C) 2013 Collabora Ltd.
* Copyright (C) 2019, 2020 Igalia S.L.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include "WebKitWebSourceGStreamer.h"
#if ENABLE(VIDEO) && USE(GSTREAMER)
#include "GStreamerCommon.h"
#include "HTTPHeaderNames.h"
#include "MediaPlayer.h"
#include "PlatformMediaResourceLoader.h"
#include "PolicyChecker.h"
#include "ResourceError.h"
#include "ResourceRequest.h"
#include "ResourceResponse.h"
#include "SecurityOrigin.h"
#include <cstdint>
#include <wtf/Condition.h>
#include <wtf/DataMutex.h>
#include <wtf/PrintStream.h>
#include <wtf/RunLoop.h>
#include <wtf/Scope.h>
#include <wtf/glib/WTFGType.h>
#include <wtf/text/CString.h>
#include <wtf/text/StringToIntegerConversion.h>
using namespace WebCore;
// Never pause download of media resources smaller than 2MiB.
#define SMALL_MEDIA_RESOURCE_MAX_SIZE 2 * 1024 * 1024
// Keep at most 2% of the full, non-small, media resource buffered. When this
// threshold is reached, the download task is paused.
#define HIGH_QUEUE_FACTOR_THRESHOLD 0.02
// Keep at least 20% of maximum queue size buffered. When this threshold is
// reached, the download task resumes.
#define LOW_QUEUE_FACTOR_THRESHOLD 0.2
class CachedResourceStreamingClient final : public PlatformMediaResourceClient {
WTF_MAKE_FAST_ALLOCATED;
WTF_MAKE_NONCOPYABLE(CachedResourceStreamingClient);
public:
CachedResourceStreamingClient(WebKitWebSrc*, ResourceRequest&&, unsigned requestNumber);
virtual ~CachedResourceStreamingClient();
const HashSet<RefPtr<WebCore::SecurityOrigin>>& securityOrigins() const { return m_origins; }
void setSourceElement(WebKitWebSrc* src) { m_src = GST_ELEMENT_CAST(src); }
private:
void checkUpdateBlocksize(unsigned bytesRead);
// PlatformMediaResourceClient virtual methods.
void responseReceived(PlatformMediaResource&, const ResourceResponse&, CompletionHandler<void(ShouldContinuePolicyCheck)>&&) override;
void dataReceived(PlatformMediaResource&, Ref<SharedBuffer>&&) override;
void accessControlCheckFailed(PlatformMediaResource&, const ResourceError&) override;
void loadFailed(PlatformMediaResource&, const ResourceError&) override;
void loadFinished(PlatformMediaResource&, const NetworkLoadMetrics&) override;
static constexpr int s_growBlocksizeLimit { 1 };
static constexpr int s_growBlocksizeCount { 2 };
static constexpr int s_growBlocksizeFactor { 2 };
static constexpr float s_reduceBlocksizeLimit { 0.5 };
static constexpr int s_reduceBlocksizeCount { 2 };
static constexpr float s_reduceBlocksizeFactor { 0.5 };
int m_reduceBlocksizeCount { 0 };
int m_increaseBlocksizeCount { 0 };
unsigned m_requestNumber;
GRefPtr<GstElement> m_src;
ResourceRequest m_request;
HashSet<RefPtr<WebCore::SecurityOrigin>> m_origins;
};
struct WebKitWebSrcPrivate {
// Constants initialized during construction:
unsigned minimumBlocksize;
// Configuration of the element (properties set by the user of WebKitWebSrc):
// They can only change when state < PAUSED.
CString originalURI;
bool keepAlive;
GUniquePtr<GstStructure> extraHeaders;
bool compress;
GUniquePtr<gchar> httpMethod;
struct StreamingMembers {
#ifndef NDEBUG
~StreamingMembers()
{
// By the time we're destroying WebKitWebSrcPrivate unLock() should have been called and therefore resource
// should have already been cleared.
ASSERT(!resource);
}
#endif
// Properties initially empty, but set once the first HTTP response arrives:
bool wasResponseReceived;
CString redirectedURI;
bool didPassAccessControlCheck;
bool haveSize;
uint64_t size;
bool isSeekable;
GRefPtr<GstCaps> pendingCaps;
GRefPtr<GstMessage> pendingHttpHeadersMessage; // Set from MT, sent from create().
GRefPtr<GstEvent> pendingHttpHeadersEvent; // Set from MT, sent from create().
// Properties updated with every downloaded data block:
WallTime downloadStartTime { WallTime::nan() };
uint64_t totalDownloadedBytes { 0 };
bool doesHaveEOS; // Set both when we reach stopPosition and on errors (including on responseReceived).
bool isDownloadSuspended { false }; // Set to true from the network handler when the high water level is reached.
// Obtained by means of GstContext queries before making the first HTTP request.
// We use it for getting access to WebKit networking objects: the PlatformMediaResourceLoader factory [createResourceLoader()]
// and the player HTTP referrer string.
WebCore::MediaPlayer* player;
// MediaPlayer referrer cached value. The corresponding method has to be called from the
// main thread, so the value needs to be cached before use in non-main thread.
String referrer;
// Properties used for GStreamer data-flow in create().
bool isFlushing { false };
Condition responseCondition; // Must be signaled after any updates on HTTP requests, and when flushing.
GRefPtr<GstAdapter> adapter;
bool isDurationSet;
uint64_t readPosition;
// Properties only set during seek.
// basesrc ensures they can't change during a create() call by taking the STREAMING_LOCK.
// (An initial seek is also guaranteed by basesrc.)
unsigned requestNumber { 1 };
uint64_t requestedPosition { 0 };
uint64_t stopPosition { UINT64_MAX };
bool isRequestPending { true };
RefPtr<PlatformMediaResourceLoader> loader;
RefPtr<PlatformMediaResource> resource;
};
DataMutex<StreamingMembers> dataMutex;
};
enum {
PROP_0,
PROP_LOCATION,
PROP_RESOLVED_LOCATION,
PROP_KEEP_ALIVE,
PROP_EXTRA_HEADERS,
PROP_COMPRESS,
PROP_METHOD
};
static GstStaticPadTemplate srcTemplate = GST_STATIC_PAD_TEMPLATE("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS_ANY);
GST_DEBUG_CATEGORY_STATIC(webkit_web_src_debug);
#define GST_CAT_DEFAULT webkit_web_src_debug
static void webKitWebSrcUriHandlerInit(gpointer gIface, gpointer ifaceData);
static void webKitWebSrcConstructed(GObject*);
static void webKitWebSrcSetProperty(GObject*, guint propertyID, const GValue*, GParamSpec*);
static void webKitWebSrcGetProperty(GObject*, guint propertyID, GValue*, GParamSpec*);
static GstFlowReturn webKitWebSrcCreate(GstPushSrc*, GstBuffer**);
static void webKitWebSrcMakeRequest(WebKitWebSrc*, DataMutexLocker<WebKitWebSrcPrivate::StreamingMembers>&);
static gboolean webKitWebSrcStart(GstBaseSrc*);
static gboolean webKitWebSrcStop(GstBaseSrc*);
static gboolean webKitWebSrcGetSize(GstBaseSrc*, guint64* size);
static gboolean webKitWebSrcIsSeekable(GstBaseSrc*);
static gboolean webKitWebSrcDoSeek(GstBaseSrc*, GstSegment*);
static gboolean webKitWebSrcQuery(GstBaseSrc*, GstQuery*);
static gboolean webKitWebSrcUnLock(GstBaseSrc*);
static gboolean webKitWebSrcUnLockStop(GstBaseSrc*);
static void webKitWebSrcSetContext(GstElement*, GstContext*);
static void restartLoaderIfNeeded(WebKitWebSrc*, DataMutexLocker<WebKitWebSrcPrivate::StreamingMembers>&);
static void stopLoaderIfNeeded(WebKitWebSrc*, DataMutexLocker<WebKitWebSrcPrivate::StreamingMembers>&);
#define webkit_web_src_parent_class parent_class
WEBKIT_DEFINE_TYPE_WITH_CODE(WebKitWebSrc, webkit_web_src, GST_TYPE_PUSH_SRC,
G_IMPLEMENT_INTERFACE(GST_TYPE_URI_HANDLER, webKitWebSrcUriHandlerInit);
GST_DEBUG_CATEGORY_INIT(webkit_web_src_debug, "webkitwebsrc", 0, "websrc element");
)
static void webkit_web_src_class_init(WebKitWebSrcClass* klass)
{
GObjectClass* oklass = G_OBJECT_CLASS(klass);
oklass->constructed = webKitWebSrcConstructed;
oklass->set_property = webKitWebSrcSetProperty;
oklass->get_property = webKitWebSrcGetProperty;
GstElementClass* eklass = GST_ELEMENT_CLASS(klass);
gst_element_class_add_static_pad_template(eklass, &srcTemplate);
gst_element_class_set_metadata(eklass, "WebKit Web source element", "Source/Network", "Handles HTTP/HTTPS uris",
"Philippe Normand <philn@igalia.com>");
/* Allows setting the uri using the 'location' property, which is used
* for example by gst_element_make_from_uri() */
g_object_class_install_property(oklass, PROP_LOCATION,
g_param_spec_string("location", "location", "Location to read from",
nullptr, static_cast<GParamFlags>(G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property(oklass, PROP_RESOLVED_LOCATION,
g_param_spec_string("resolved-location", "Resolved location", "The location resolved by the server",
nullptr, static_cast<GParamFlags>(G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property(oklass, PROP_KEEP_ALIVE,
g_param_spec_boolean("keep-alive", "keep-alive", "Use HTTP persistent connections",
FALSE, static_cast<GParamFlags>(G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property(oklass, PROP_EXTRA_HEADERS,
g_param_spec_boxed("extra-headers", "Extra Headers", "Extra headers to append to the HTTP request",
GST_TYPE_STRUCTURE, static_cast<GParamFlags>(G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property(oklass, PROP_COMPRESS,
g_param_spec_boolean("compress", "Compress", "Allow compressed content encodings",
FALSE, static_cast<GParamFlags>(G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property(oklass, PROP_METHOD,
g_param_spec_string("method", "method", "The HTTP method to use (default: GET)",
nullptr, static_cast<GParamFlags>(G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
eklass->set_context = GST_DEBUG_FUNCPTR(webKitWebSrcSetContext);
GstBaseSrcClass* baseSrcClass = GST_BASE_SRC_CLASS(klass);
baseSrcClass->start = GST_DEBUG_FUNCPTR(webKitWebSrcStart);
baseSrcClass->stop = GST_DEBUG_FUNCPTR(webKitWebSrcStop);
baseSrcClass->unlock = GST_DEBUG_FUNCPTR(webKitWebSrcUnLock);
baseSrcClass->unlock_stop = GST_DEBUG_FUNCPTR(webKitWebSrcUnLockStop);
baseSrcClass->get_size = GST_DEBUG_FUNCPTR(webKitWebSrcGetSize);
baseSrcClass->is_seekable = GST_DEBUG_FUNCPTR(webKitWebSrcIsSeekable);
baseSrcClass->do_seek = GST_DEBUG_FUNCPTR(webKitWebSrcDoSeek);
baseSrcClass->query = GST_DEBUG_FUNCPTR(webKitWebSrcQuery);
GstPushSrcClass* pushSrcClass = GST_PUSH_SRC_CLASS(klass);
pushSrcClass->create = GST_DEBUG_FUNCPTR(webKitWebSrcCreate);
}
enum class ResetType {
Soft,
Hard
};
static void webkitWebSrcReset(WebKitWebSrc* src, DataMutexLocker<WebKitWebSrcPrivate::StreamingMembers>& members, ResetType resetType)
{
GST_DEBUG_OBJECT(src, "Resetting internal state");
gst_adapter_clear(members->adapter.get());
members->isRequestPending = true;
// Reset request state. Any previous request has been cancelled at this point.
members->wasResponseReceived = false;
members->doesHaveEOS = false;
members->downloadStartTime = WallTime::nan();
members->totalDownloadedBytes = 0; // Resetted for each request, used to estimate download speed.
members->pendingHttpHeadersMessage = nullptr;
members->pendingHttpHeadersEvent = nullptr;
// After a flush, we have to emit a segment again.
members->isDurationSet = false;
// Hard reset is done during initialization and state transitions.
// Soft reset is done during flushes. In these, we preserve the seek target.
if (resetType == ResetType::Hard) {
members->didPassAccessControlCheck = false;
members->redirectedURI = CString();
members->isSeekable = false;
members->haveSize = false;
members->size = 0;
members->requestedPosition = 0;
members->stopPosition = UINT64_MAX;
members->readPosition = members->requestedPosition;
}
}
static void webKitWebSrcConstructed(GObject* object)
{
GST_CALL_PARENT(G_OBJECT_CLASS, constructed, (object));
WebKitWebSrc* src = WEBKIT_WEB_SRC(object);
WebKitWebSrcPrivate* priv = src->priv;
priv->minimumBlocksize = gst_base_src_get_blocksize(GST_BASE_SRC_CAST(src));
DataMutexLocker members { priv->dataMutex };
members->adapter = adoptGRef(gst_adapter_new());
webkitWebSrcReset(src, members, ResetType::Hard);
gst_base_src_set_automatic_eos(GST_BASE_SRC_CAST(src), FALSE);
}
static void webKitWebSrcSetProperty(GObject* object, guint propID, const GValue* value, GParamSpec* pspec)
{
WebKitWebSrc* src = WEBKIT_WEB_SRC(object);
switch (propID) {
case PROP_LOCATION:
gst_uri_handler_set_uri(reinterpret_cast<GstURIHandler*>(src), g_value_get_string(value), nullptr);
break;
case PROP_KEEP_ALIVE:
src->priv->keepAlive = g_value_get_boolean(value);
break;
case PROP_EXTRA_HEADERS: {
const GstStructure* s = gst_value_get_structure(value);
src->priv->extraHeaders.reset(s ? gst_structure_copy(s) : nullptr);
break;
}
case PROP_COMPRESS:
src->priv->compress = g_value_get_boolean(value);
break;
case PROP_METHOD:
src->priv->httpMethod.reset(g_value_dup_string(value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(object, propID, pspec);
break;
}
}
static void webKitWebSrcGetProperty(GObject* object, guint propID, GValue* value, GParamSpec* pspec)
{
WebKitWebSrc* src = WEBKIT_WEB_SRC(object);
WebKitWebSrcPrivate* priv = src->priv;
switch (propID) {
case PROP_LOCATION:
g_value_set_string(value, priv->originalURI.data());
break;
case PROP_RESOLVED_LOCATION: {
DataMutexLocker members { priv->dataMutex };
g_value_set_string(value, members->redirectedURI.isNull() ? priv->originalURI.data() : members->redirectedURI.data());
break;
}
case PROP_KEEP_ALIVE:
g_value_set_boolean(value, priv->keepAlive);
break;
case PROP_EXTRA_HEADERS:
gst_value_set_structure(value, priv->extraHeaders.get());
break;
case PROP_COMPRESS:
g_value_set_boolean(value, priv->compress);
break;
case PROP_METHOD:
g_value_set_string(value, priv->httpMethod.get());
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(object, propID, pspec);
break;
}
}
static void webKitWebSrcSetContext(GstElement* element, GstContext* context)
{
WebKitWebSrc* src = WEBKIT_WEB_SRC(element);
WebKitWebSrcPrivate* priv = src->priv;
GST_DEBUG_OBJECT(src, "context type: %s", gst_context_get_context_type(context));
if (gst_context_has_context_type(context, WEBKIT_WEB_SRC_PLAYER_CONTEXT_TYPE_NAME)) {
const GValue* value = gst_structure_get_value(gst_context_get_structure(context), "player");
DataMutexLocker members { priv->dataMutex };
members->player = reinterpret_cast<MediaPlayer*>(g_value_get_pointer(value));
}
GST_ELEMENT_CLASS(parent_class)->set_context(element, context);
}
static void restartLoaderIfNeeded(WebKitWebSrc* src, DataMutexLocker<WebKitWebSrcPrivate::StreamingMembers>& members)
{
if (!members->isDownloadSuspended) {
GST_TRACE_OBJECT(src, "download already active");
return;
}
GST_TRACE_OBJECT(src, "is download suspended %s, does have EOS %s, does have size %s, is seekable %s, size %" G_GUINT64_FORMAT
" (min %u)", boolForPrinting(members->isDownloadSuspended), boolForPrinting(members->doesHaveEOS), boolForPrinting(members->haveSize)
, boolForPrinting(members->isSeekable), members->size, SMALL_MEDIA_RESOURCE_MAX_SIZE);
if (members->doesHaveEOS || !members->haveSize || !members->isSeekable || members->size <= SMALL_MEDIA_RESOURCE_MAX_SIZE) {
GST_TRACE_OBJECT(src, "download cannot be stopped/restarted");
return;
}
GST_TRACE_OBJECT(src, "read position %" G_GUINT64_FORMAT ", state %s", members->readPosition, gst_element_state_get_name(GST_STATE(src)));
if (!members->readPosition || members->readPosition == members->size || GST_STATE(src) < GST_STATE_PAUSED) {
GST_TRACE_OBJECT(src, "can't restart download");
return;
}
size_t queueSize = gst_adapter_available(members->adapter.get());
GST_TRACE_OBJECT(src, "queue size %zu (min %1.0f)", queueSize
, members->size * HIGH_QUEUE_FACTOR_THRESHOLD * LOW_QUEUE_FACTOR_THRESHOLD);
if (queueSize >= members->size * HIGH_QUEUE_FACTOR_THRESHOLD * LOW_QUEUE_FACTOR_THRESHOLD) {
GST_TRACE_OBJECT(src, "queue size above low watermark, not restarting download");
return;
}
GST_DEBUG_OBJECT(src, "restarting download");
members->isDownloadSuspended = false;
members->requestNumber++;
members->requestedPosition = members->readPosition;
webKitWebSrcMakeRequest(src, members);
}
static void stopLoaderIfNeeded(WebKitWebSrc* src, DataMutexLocker<WebKitWebSrcPrivate::StreamingMembers>& members)
{
ASSERT(isMainThread());
if (members->isDownloadSuspended) {
GST_TRACE_OBJECT(src, "download already suspended");
return;
}
GST_TRACE_OBJECT(src, "is download suspended %s, does have size %s, is seekable %s, size %" G_GUINT64_FORMAT " (min %u)"
, boolForPrinting(members->isDownloadSuspended), boolForPrinting(members->haveSize), boolForPrinting(members->isSeekable), members->size
, SMALL_MEDIA_RESOURCE_MAX_SIZE);
if (!members->isSeekable || members->size <= SMALL_MEDIA_RESOURCE_MAX_SIZE) {
GST_TRACE_OBJECT(src, "download cannot be stopped/restarted");
return;
}
size_t queueSize = gst_adapter_available(members->adapter.get());
GST_TRACE_OBJECT(src, "queue size %zu (max %1.0f)", queueSize, members->size * HIGH_QUEUE_FACTOR_THRESHOLD);
if (queueSize <= members->size * HIGH_QUEUE_FACTOR_THRESHOLD) {
GST_TRACE_OBJECT(src, "queue size under high watermark, not stopping download");
return;
}
if (members->readPosition == members->size) {
GST_TRACE_OBJECT(src, "just downloaded the last chunk in the file, loadFinished() is about to be called");
return;
}
GST_DEBUG_OBJECT(src, "R%u: stopping download", members->requestNumber);
members->isDownloadSuspended = true;
members->resource->stop();
}
static GstFlowReturn webKitWebSrcCreate(GstPushSrc* pushSrc, GstBuffer** buffer)
{
ASSERT(!isMainThread());
GstBaseSrc* baseSrc = GST_BASE_SRC_CAST(pushSrc);
WebKitWebSrc* src = WEBKIT_WEB_SRC(baseSrc);
WebKitWebSrcPrivate* priv = src->priv;
DataMutexLocker members { priv->dataMutex };
// We need members->player to make requests. There are two mechanisms for this.
//
// 1) webKitWebSrcSetMediaPlayer() is called by MediaPlayerPrivateGStreamer by means of hooking playbin's
// "source-setup" event. This doesn't work for additional WebKitWebSrc elements created by adaptivedemux.
//
// 2) A GstContext query made here.
if (!members->player) {
members.runUnlocked([src, baseSrc]() {
GRefPtr<GstQuery> query = adoptGRef(gst_query_new_context(WEBKIT_WEB_SRC_PLAYER_CONTEXT_TYPE_NAME));
if (gst_pad_peer_query(GST_BASE_SRC_PAD(baseSrc), query.get())) {
GstContext* context;
gst_query_parse_context(query.get(), &context);
gst_element_set_context(GST_ELEMENT_CAST(src), context);
} else
gst_element_post_message(GST_ELEMENT_CAST(src), gst_message_new_need_context(GST_OBJECT_CAST(src), WEBKIT_WEB_SRC_PLAYER_CONTEXT_TYPE_NAME));
});
if (members->isFlushing)
return GST_FLOW_FLUSHING;
}
if (!members->player) {
GST_ERROR_OBJECT(src, "Couldn't obtain WebKitWebSrcPlayerContext, which is necessary to make network requests");
return GST_FLOW_ERROR;
}
GST_TRACE_OBJECT(src, "readPosition = %" G_GUINT64_FORMAT " requestedPosition = %" G_GUINT64_FORMAT, members->readPosition, members->requestedPosition);
if (members->isRequestPending) {
members->isRequestPending = false;
webKitWebSrcMakeRequest(src, members);
}
// Wait for the response headers.
members->responseCondition.wait(members.mutex(), [&] () {
return members->wasResponseReceived || members->isFlushing;
});
if (members->isFlushing)
return GST_FLOW_FLUSHING;
if (members->pendingCaps) {
GST_DEBUG_OBJECT(src, "Setting caps: %" GST_PTR_FORMAT, members->pendingCaps.get());
members.runUnlocked([baseSrc, caps = members->pendingCaps.leakRef()]() {
gst_base_src_set_caps(baseSrc, caps);
});
if (members->isFlushing)
return GST_FLOW_FLUSHING;
}
if (members->haveSize && !members->isDurationSet) {
GST_DEBUG_OBJECT(src, "Setting duration to %" G_GUINT64_FORMAT, members->size);
baseSrc->segment.duration = members->size;
members->isDurationSet = true;
gst_element_post_message(GST_ELEMENT_CAST(src), gst_message_new_duration_changed(GST_OBJECT_CAST(src)));
}
if (members->pendingHttpHeadersMessage)
gst_element_post_message(GST_ELEMENT(src), members->pendingHttpHeadersMessage.leakRef());
if (members->pendingHttpHeadersEvent)
gst_pad_push_event(GST_BASE_SRC_PAD(baseSrc), members->pendingHttpHeadersEvent.leakRef());
restartLoaderIfNeeded(src, members);
// We don't use the GstAdapter methods marked as fast anymore because sometimes it was slower. The reason why this was slower is that we can be
// waiting for more "fast" (that could be retrieved with the _fast API) buffers to be available even in cases where the queue is not empty. These
// other buffers can be retrieved with the "non _fast" API.
GST_TRACE_OBJECT(src, "doesHaveEOS: %s, isDownloadSuspended: %s", boolForPrinting(members->doesHaveEOS), boolForPrinting(members->isDownloadSuspended));
unsigned size = gst_base_src_get_blocksize(baseSrc);
size_t queueSize = gst_adapter_available(members->adapter.get());
GST_TRACE_OBJECT(src, "available bytes %" G_GSIZE_FORMAT ", block size %u", queueSize, size);
if (!queueSize) {
GST_TRACE_OBJECT(src, "let's wait for data or EOS");
members->responseCondition.wait(members.mutex(), [&] {
return members->isFlushing || gst_adapter_available(members->adapter.get()) || members->doesHaveEOS;
});
if (members->isFlushing)
return GST_FLOW_FLUSHING;
queueSize = gst_adapter_available(members->adapter.get());
GST_TRACE_OBJECT(src, "available %" G_GSIZE_FORMAT, queueSize);
}
if (queueSize) {
if (queueSize < size) {
GST_TRACE_OBJECT(src, "Did not get the %u blocksize bytes, let's push the %" G_GSIZE_FORMAT " bytes we got", size, queueSize);
size = queueSize;
} else
GST_TRACE_OBJECT(src, "Taking %u bytes from adapter", size);
*buffer = gst_adapter_take_buffer(members->adapter.get(), size);
RELEASE_ASSERT(*buffer);
GST_BUFFER_OFFSET(*buffer) = baseSrc->segment.position;
GST_BUFFER_OFFSET_END(*buffer) = GST_BUFFER_OFFSET(*buffer) + size;
GST_TRACE_OBJECT(src, "Buffer bounds set to %" G_GUINT64_FORMAT "-%" G_GUINT64_FORMAT, GST_BUFFER_OFFSET(*buffer), GST_BUFFER_OFFSET_END(*buffer));
GST_TRACE_OBJECT(src, "buffer size: %u, total content size: %" G_GUINT64_FORMAT, size, members->size);
restartLoaderIfNeeded(src, members);
return GST_FLOW_OK;
}
// If the queue is empty reached this point, the only other option is that we are in EOS.
ASSERT(members->doesHaveEOS);
GST_DEBUG_OBJECT(src, "Reached the end of the response, signalling EOS");
gst_element_post_message(GST_ELEMENT_CAST(src), gst_message_new_element(GST_OBJECT_CAST(src),
gst_structure_new_empty("webkit-web-src-has-eos")));
return GST_FLOW_EOS;
}
static bool webKitWebSrcSetExtraHeader(GQuark fieldId, const GValue* value, gpointer userData)
{
GUniquePtr<gchar> fieldContent;
if (G_VALUE_HOLDS_STRING(value))
fieldContent.reset(g_value_dup_string(value));
else {
GValue dest = G_VALUE_INIT;
g_value_init(&dest, G_TYPE_STRING);
if (g_value_transform(value, &dest))
fieldContent.reset(g_value_dup_string(&dest));
}
const gchar* fieldName = g_quark_to_string(fieldId);
if (!fieldContent.get()) {
GST_ERROR("extra-headers field '%s' contains no value or can't be converted to a string", fieldName);
return false;
}
GST_DEBUG("Appending extra header: \"%s: %s\"", fieldName, fieldContent.get());
ResourceRequest* request = static_cast<ResourceRequest*>(userData);
request->setHTTPHeaderField(fieldName, fieldContent.get());
return true;
}
static gboolean webKitWebSrcProcessExtraHeaders(GQuark fieldId, const GValue* value, gpointer userData)
{
if (G_VALUE_TYPE(value) == GST_TYPE_ARRAY) {
unsigned size = gst_value_array_get_size(value);
for (unsigned i = 0; i < size; i++) {
if (!webKitWebSrcSetExtraHeader(fieldId, gst_value_array_get_value(value, i), userData))
return FALSE;
}
return TRUE;
}
if (G_VALUE_TYPE(value) == GST_TYPE_LIST) {
unsigned size = gst_value_list_get_size(value);
for (unsigned i = 0; i < size; i++) {
if (!webKitWebSrcSetExtraHeader(fieldId, gst_value_list_get_value(value, i), userData))
return FALSE;
}
return TRUE;
}
return webKitWebSrcSetExtraHeader(fieldId, value, userData);
}
static gboolean webKitWebSrcStart(GstBaseSrc* baseSrc)
{
WebKitWebSrc* src = WEBKIT_WEB_SRC(baseSrc);
if (src->priv->originalURI.isNull()) {
GST_ERROR_OBJECT(src, "No URI provided");
return FALSE;
}
return TRUE;
}
static void webKitWebSrcMakeRequest(WebKitWebSrc* src, DataMutexLocker<WebKitWebSrcPrivate::StreamingMembers>& members)
{
WebKitWebSrcPrivate* priv = src->priv;
ASSERT(!priv->originalURI.isNull());
ASSERT(members->requestedPosition != members->stopPosition);
GST_DEBUG_OBJECT(src, "Posting task to request R%u %s requestedPosition=%" G_GUINT64_FORMAT " stopPosition=%" G_GUINT64_FORMAT, members->requestNumber, priv->originalURI.data(), members->requestedPosition, members->stopPosition);
URL url = URL(URL(), priv->originalURI.data());
ResourceRequest request(url);
request.setAllowCookies(true);
request.setFirstPartyForCookies(url);
request.setHTTPReferrer(members->referrer);
if (priv->httpMethod.get())
request.setHTTPMethod(priv->httpMethod.get());
#if USE(SOUP)
// By default, HTTP Accept-Encoding is disabled here as we don't
// want the received response to be encoded in any way as we need
// to rely on the proper size of the returned data on
// didReceiveResponse.
// If Accept-Encoding is used, the server may send the data in encoded format and
// request.expectedContentLength() will have the "wrong" size (the size of the
// compressed data), even though the data received in didReceiveData is uncompressed.
// This is however useful to enable for adaptive streaming
// scenarios, when the demuxer needs to download playlists.
if (!priv->compress)
request.setAcceptEncoding(false);
#endif
// Let Apple web servers know we want to access their nice movie trailers.
if (!g_ascii_strcasecmp("movies.apple.com", url.host().utf8().data())
|| !g_ascii_strcasecmp("trailers.apple.com", url.host().utf8().data()))
request.setHTTPUserAgent("Quicktime/7.6.6");
if (members->requestedPosition) {
GUniquePtr<char> formatedRange(g_strdup_printf("bytes=%" G_GUINT64_FORMAT "-", members->requestedPosition));
GST_DEBUG_OBJECT(src, "Range request: %s", formatedRange.get());
request.setHTTPHeaderField(HTTPHeaderName::Range, formatedRange.get());
}
ASSERT(members->readPosition == members->requestedPosition);
GST_DEBUG_OBJECT(src, "Persistent connection support %s", priv->keepAlive ? "enabled" : "disabled");
if (!priv->keepAlive)
request.setHTTPHeaderField(HTTPHeaderName::Connection, "close");
if (priv->extraHeaders)
gst_structure_foreach(priv->extraHeaders.get(), webKitWebSrcProcessExtraHeaders, &request);
// We always request Icecast/Shoutcast metadata, just in case ...
request.setHTTPHeaderField(HTTPHeaderName::IcyMetadata, "1");
ASSERT(!isMainThread());
RunLoop::main().dispatch([protector = WTF::ensureGRef(src), request = WTFMove(request), requestNumber = members->requestNumber] {
WebKitWebSrcPrivate* priv = protector->priv;
DataMutexLocker members { priv->dataMutex };
// Ignore this task (not making any HTTP request) if by now WebKitWebSrc streaming thread is already waiting
// for a different request. There is no point anymore in sending this one.
if (members->requestNumber != requestNumber) {
GST_DEBUG_OBJECT(protector.get(), "Skipping R%u, current request number is %u", requestNumber, members->requestNumber);
return;
}
if (!members->loader)
members->loader = members->player->createResourceLoader();
PlatformMediaResourceLoader::LoadOptions loadOptions = 0;
members->resource = members->loader->requestResource(ResourceRequest(request), loadOptions);
if (members->resource) {
members->resource->setClient(adoptRef(*new CachedResourceStreamingClient(protector.get(), ResourceRequest(request), requestNumber)));
GST_DEBUG_OBJECT(protector.get(), "Started request R%u", requestNumber);
} else {
GST_ERROR_OBJECT(protector.get(), "Failed to setup streaming client to handle R%u", requestNumber);
members->loader = nullptr;
}
});
}
static gboolean webKitWebSrcStop(GstBaseSrc* baseSrc)
{
WebKitWebSrc* src = WEBKIT_WEB_SRC(baseSrc);
// basesrc will always call unLock() and unLockStop() before calling this. See gst_base_src_stop().
DataMutexLocker members { src->priv->dataMutex };
webkitWebSrcReset(src, members, ResetType::Hard);
GST_DEBUG_OBJECT(src, "Stopped WebKitWebSrc");
return TRUE;
}
static gboolean webKitWebSrcGetSize(GstBaseSrc* baseSrc, guint64* size)
{
WebKitWebSrc* src = WEBKIT_WEB_SRC(baseSrc);
DataMutexLocker members { src->priv->dataMutex };
GST_DEBUG_OBJECT(src, "haveSize: %s, size: %" G_GUINT64_FORMAT, boolForPrinting(members->haveSize), members->size);
if (members->haveSize) {
*size = members->size;
return TRUE;
}
return FALSE;
}
static gboolean webKitWebSrcIsSeekable(GstBaseSrc* baseSrc)
{
WebKitWebSrc* src = WEBKIT_WEB_SRC(baseSrc);
DataMutexLocker members { src->priv->dataMutex };
GST_DEBUG_OBJECT(src, "isSeekable: %s", boolForPrinting(members->isSeekable));
return members->isSeekable;
}
static gboolean webKitWebSrcDoSeek(GstBaseSrc* baseSrc, GstSegment* segment)
{
// This function is mutually exclusive with create(). It's only called when we're transitioning to >=PAUSED and
// between flushes. In any case, basesrc holds the STREAM_LOCK, so we know create() is not running.
// Also, both webKitWebSrcUnLock() and webKitWebSrcUnLockStop() are guaranteed to be called *before* this function.
// [See gst_base_src_perform_seek()].
ASSERT(GST_ELEMENT(baseSrc)->current_state < GST_STATE_PAUSED || GST_PAD_IS_FLUSHING(baseSrc->srcpad));
// Except for the initial seek, this function is only called if isSeekable() returns true.
ASSERT(GST_ELEMENT(baseSrc)->current_state < GST_STATE_PAUSED || webKitWebSrcIsSeekable(baseSrc));
WebKitWebSrc* src = WEBKIT_WEB_SRC(baseSrc);
DataMutexLocker members { src->priv->dataMutex };
GST_DEBUG_OBJECT(src, "Seek segment: (%" G_GUINT64_FORMAT "-%" G_GUINT64_FORMAT ") Position previous to seek: %" G_GUINT64_FORMAT, segment->start, segment->stop, members->readPosition);
// Before attempting to seek, basesrc will call isSeekable(). If isSeekable() is true, a flush will be made and
// this function will be called. basesrc still gives us the chance here to return FALSE and cancel the seek.
// We cannot afford to return FALSE in this function though unless we're going to fail on purpose, since at this
// point we have already been flushed and cancelled the HTTP request that was feeding us data.
if (segment->rate < 0.0 || segment->format != GST_FORMAT_BYTES) {
GST_ERROR_OBJECT(src, "Invalid seek segment");
return FALSE;
}
if (members->haveSize && segment->start >= members->size)
GST_WARNING_OBJECT(src, "Potentially seeking behind end of file, might EOS immediately");
members->requestedPosition = members->readPosition = segment->start;
members->stopPosition = segment->stop;
return TRUE;
}
static gboolean webKitWebSrcQuery(GstBaseSrc* baseSrc, GstQuery* query)
{
WebKitWebSrc* src = WEBKIT_WEB_SRC(baseSrc);
WebKitWebSrcPrivate* priv = src->priv;
gboolean result = FALSE;
if (GST_QUERY_TYPE(query) == GST_QUERY_URI) {
gst_query_set_uri(query, priv->originalURI.data());
DataMutexLocker members { src->priv->dataMutex };
if (!members->redirectedURI.isNull())
gst_query_set_uri_redirection(query, members->redirectedURI.data());
result = TRUE;
}
if (!result)
result = GST_BASE_SRC_CLASS(parent_class)->query(baseSrc, query);
if (GST_QUERY_TYPE(query) == GST_QUERY_SCHEDULING) {
GstSchedulingFlags flags;
int minSize, maxSize, align;
gst_query_parse_scheduling(query, &flags, &minSize, &maxSize, &align);
gst_query_set_scheduling(query, static_cast<GstSchedulingFlags>(flags | GST_SCHEDULING_FLAG_BANDWIDTH_LIMITED), minSize, maxSize, align);
}
return result;
}
static gboolean webKitWebSrcUnLock(GstBaseSrc* baseSrc)
{
WebKitWebSrc* src = WEBKIT_WEB_SRC(baseSrc);
DataMutexLocker members { src->priv->dataMutex };
GST_DEBUG_OBJECT(src, "Unlock");
members->isFlushing = true;
// If we have a network resource request open, we ask the main thread to close it.
if (members->resource) {
GST_DEBUG_OBJECT(src, "Resource request R%u will be stopped", members->requestNumber);
RunLoop::main().dispatch([protector = WTF::ensureGRef(src), resource = WTFMove(members->resource), requestNumber = members->requestNumber] {
GST_DEBUG_OBJECT(protector.get(), "Stopping resource request R%u", requestNumber);
resource->stop();
resource->setClient(nullptr);
});
}
ASSERT(!members->resource);
if (!src->priv->keepAlive)
members->loader = nullptr;
// Ensure all network callbacks from the old request don't feed data to WebKitWebSrc anymore.
members->requestNumber++;
// Wake up streaming thread.
members->responseCondition.notifyOne();
return TRUE;
}
static gboolean webKitWebSrcUnLockStop(GstBaseSrc* baseSrc)
{
WebKitWebSrc* src = WEBKIT_WEB_SRC(baseSrc);
DataMutexLocker members { src->priv->dataMutex };
GST_DEBUG_OBJECT(src, "Unlock stop");
members->isFlushing = false;
webkitWebSrcReset(src, members, ResetType::Soft);
return TRUE;
}
static bool urlHasSupportedProtocol(const URL& url)
{
return url.isValid() && (url.protocolIsInHTTPFamily() || url.protocolIsBlob());
}
// uri handler interface
static GstURIType webKitWebSrcUriGetType(GType)
{
return GST_URI_SRC;
}
const gchar* const* webKitWebSrcGetProtocols(GType)
{
static const char* protocols[4];
protocols[0] = "http";
protocols[1] = "https";
protocols[2] = "blob";
protocols[3] = nullptr;
return protocols;
}
static URL convertPlaybinURI(const char* uriString)
{
URL url(URL(), uriString);
return url;
}
static gchar* webKitWebSrcGetUri(GstURIHandler* handler)
{
WebKitWebSrc* src = WEBKIT_WEB_SRC(handler);
gchar* ret = g_strdup(src->priv->originalURI.data());
return ret;
}
static gboolean webKitWebSrcSetUri(GstURIHandler* handler, const gchar* uri, GError** error)
{
WebKitWebSrc* src = WEBKIT_WEB_SRC(handler);
WebKitWebSrcPrivate* priv = src->priv;
if (GST_STATE(src) >= GST_STATE_PAUSED) {
GST_ERROR_OBJECT(src, "URI can only be set in states < PAUSED");
return FALSE;
}
priv->originalURI = CString();
if (!uri)
return TRUE;
if (priv->originalURI.length()) {
GST_ERROR_OBJECT(src, "URI can only be set in states < PAUSED");
return FALSE;
}
URL url = convertPlaybinURI(uri);
if (!urlHasSupportedProtocol(url)) {
g_set_error(error, GST_URI_ERROR, GST_URI_ERROR_BAD_URI, "Invalid URI '%s'", uri);
return FALSE;
}
priv->originalURI = url.string().utf8();
return TRUE;
}
static void webKitWebSrcUriHandlerInit(gpointer gIface, gpointer)
{
GstURIHandlerInterface* iface = (GstURIHandlerInterface *) gIface;
iface->get_type = webKitWebSrcUriGetType;
iface->get_protocols = webKitWebSrcGetProtocols;
iface->get_uri = webKitWebSrcGetUri;
iface->set_uri = webKitWebSrcSetUri;
}
void webKitWebSrcSetMediaPlayer(WebKitWebSrc* src, WebCore::MediaPlayer* player, const String& referrer)
{
ASSERT(player);
DataMutexLocker members { src->priv->dataMutex };
members->player = player;
members->referrer = referrer;
}
bool webKitSrcPassedCORSAccessCheck(WebKitWebSrc* src)
{
DataMutexLocker members { src->priv->dataMutex };
return members->didPassAccessControlCheck;
}
CachedResourceStreamingClient::CachedResourceStreamingClient(WebKitWebSrc* src, ResourceRequest&& request, unsigned requestNumber)
: m_requestNumber(requestNumber)
, m_src(GST_ELEMENT(src))
, m_request(WTFMove(request))
{
}
CachedResourceStreamingClient::~CachedResourceStreamingClient() = default;
void CachedResourceStreamingClient::checkUpdateBlocksize(unsigned bytesRead)
{
ASSERT(isMainThread());
WebKitWebSrc* src = WEBKIT_WEB_SRC(m_src.get());
GstBaseSrc* baseSrc = GST_BASE_SRC_CAST(src);
WebKitWebSrcPrivate* priv = src->priv;
unsigned blocksize = gst_base_src_get_blocksize(baseSrc);
GST_LOG_OBJECT(src, "Checking to update blocksize. Read: %u, current blocksize: %u", bytesRead, blocksize);
if (bytesRead > blocksize * s_growBlocksizeLimit) {
m_reduceBlocksizeCount = 0;
m_increaseBlocksizeCount++;
if (m_increaseBlocksizeCount >= s_growBlocksizeCount) {
blocksize *= s_growBlocksizeFactor;
GST_DEBUG_OBJECT(src, "Increased blocksize to %u", blocksize);
gst_base_src_set_blocksize(baseSrc, blocksize);
m_increaseBlocksizeCount = 0;
}
} else if (bytesRead < blocksize * s_reduceBlocksizeLimit) {
m_reduceBlocksizeCount++;
m_increaseBlocksizeCount = 0;
if (m_reduceBlocksizeCount >= s_reduceBlocksizeCount) {
blocksize *= s_reduceBlocksizeFactor;
blocksize = std::max(blocksize, priv->minimumBlocksize);
GST_DEBUG_OBJECT(src, "Decreased blocksize to %u", blocksize);
gst_base_src_set_blocksize(baseSrc, blocksize);
m_reduceBlocksizeCount = 0;
}
} else {
m_reduceBlocksizeCount = 0;
m_increaseBlocksizeCount = 0;
}
}
void CachedResourceStreamingClient::responseReceived(PlatformMediaResource&, const ResourceResponse& response, CompletionHandler<void(ShouldContinuePolicyCheck)>&& completionHandler)
{
ASSERT(isMainThread());
WebKitWebSrc* src = WEBKIT_WEB_SRC(m_src.get());
WebKitWebSrcPrivate* priv = src->priv;
DataMutexLocker members { priv->dataMutex };
if (members->requestNumber != m_requestNumber) {
completionHandler(ShouldContinuePolicyCheck::No);
return;
}
GST_DEBUG_OBJECT(src, "R%u: Received response: %d", m_requestNumber, response.httpStatusCode());
members->didPassAccessControlCheck = members->resource->didPassAccessControlCheck();
m_origins.add(SecurityOrigin::create(response.url()));
auto responseURI = response.url().string().utf8();
if (priv->originalURI != responseURI)
members->redirectedURI = WTFMove(responseURI);
// length will be zero (unknown) if no Content-Length is provided or the response is compressed with Content-Encoding.
uint64_t length = !response.httpHeaderFields().contains(HTTPHeaderName::ContentEncoding) ? response.expectedContentLength() : 0;
if (length > 0 && members->requestedPosition && response.httpStatusCode() == 206)
length += members->requestedPosition;
GUniquePtr<GstStructure> httpHeaders(gst_structure_new_empty("http-headers"));
gst_structure_set(httpHeaders.get(), "uri", G_TYPE_STRING, priv->originalURI.data(),
"http-status-code", G_TYPE_UINT, response.httpStatusCode(), nullptr);
if (!members->redirectedURI.isNull())
gst_structure_set(httpHeaders.get(), "redirection-uri", G_TYPE_STRING, members->redirectedURI.data(), nullptr);
// Pack request headers in the http-headers structure.
GUniquePtr<GstStructure> headers(gst_structure_new_empty("request-headers"));
for (const auto& header : m_request.httpHeaderFields())
gst_structure_set(headers.get(), header.key.utf8().data(), G_TYPE_STRING, header.value.utf8().data(), nullptr);
GST_DEBUG_OBJECT(src, "R%u: Request headers going downstream: %" GST_PTR_FORMAT, m_requestNumber, headers.get());
gst_structure_set(httpHeaders.get(), "request-headers", GST_TYPE_STRUCTURE, headers.get(), nullptr);
// Pack response headers in the http-headers structure.
headers.reset(gst_structure_new_empty("response-headers"));
for (const auto& header : response.httpHeaderFields()) {
if (auto convertedValue = parseIntegerAllowingTrailingJunk<uint64_t>(header.value))
gst_structure_set(headers.get(), header.key.utf8().data(), G_TYPE_UINT64, *convertedValue, nullptr);
else
gst_structure_set(headers.get(), header.key.utf8().data(), G_TYPE_STRING, header.value.utf8().data(), nullptr);
}
GST_DEBUG_OBJECT(src, "R%u: Response headers going downstream: %" GST_PTR_FORMAT, m_requestNumber, headers.get());
gst_structure_set(httpHeaders.get(), "response-headers", GST_TYPE_STRUCTURE, headers.get(), nullptr);
members->pendingHttpHeadersMessage = adoptGRef(gst_message_new_element(GST_OBJECT_CAST(src), gst_structure_copy(httpHeaders.get())));
members->pendingHttpHeadersEvent = adoptGRef(gst_event_new_custom(GST_EVENT_CUSTOM_DOWNSTREAM_STICKY, httpHeaders.release()));
if (response.httpStatusCode() >= 400) {
GST_ELEMENT_ERROR(src, RESOURCE, READ, ("R%u: Received %d HTTP error code", m_requestNumber, response.httpStatusCode()), (nullptr));
members->doesHaveEOS = true;
members->responseCondition.notifyOne();
completionHandler(ShouldContinuePolicyCheck::No);
return;
}
if (members->requestedPosition) {
// Seeking ... we expect a 206 == PARTIAL_CONTENT
if (response.httpStatusCode() != 206) {
// Range request completely failed.
GST_ELEMENT_ERROR(src, RESOURCE, READ, ("R%u: Received unexpected %d HTTP status code for range request", m_requestNumber, response.httpStatusCode()), (nullptr));
members->doesHaveEOS = true;
members->responseCondition.notifyOne();
completionHandler(ShouldContinuePolicyCheck::No);
return;
}
GST_DEBUG_OBJECT(src, "R%u: Range request succeeded", m_requestNumber);
}
members->isSeekable = length > 0 && g_ascii_strcasecmp("none", response.httpHeaderField(HTTPHeaderName::AcceptRanges).utf8().data());
GST_DEBUG_OBJECT(src, "R%u: Size: %" G_GUINT64_FORMAT ", isSeekable: %s", m_requestNumber, length, boolForPrinting(members->isSeekable));
if (length > 0) {
if (!members->haveSize || members->size != length) {
members->haveSize = true;
members->size = length;
}
} else
members->haveSize = false;
// Signal to downstream if this is an Icecast stream.
GRefPtr<GstCaps> caps;
if (auto metadataInterval = parseIntegerAllowingTrailingJunk<int>(response.httpHeaderField(HTTPHeaderName::IcyMetaInt)); metadataInterval && *metadataInterval > 0) {
caps = adoptGRef(gst_caps_new_simple("application/x-icy", "metadata-interval", G_TYPE_INT, *metadataInterval, nullptr));
String contentType = response.httpHeaderField(HTTPHeaderName::ContentType);
GST_DEBUG_OBJECT(src, "R%u: Response ContentType: %s", m_requestNumber, contentType.utf8().data());
gst_caps_set_simple(caps.get(), "content-type", G_TYPE_STRING, contentType.utf8().data(), nullptr);
}
if (caps) {
GST_DEBUG_OBJECT(src, "R%u: Set caps to %" GST_PTR_FORMAT, m_requestNumber, caps.get());
members->pendingCaps = WTFMove(caps);
}
members->wasResponseReceived = true;
members->responseCondition.notifyOne();
completionHandler(ShouldContinuePolicyCheck::Yes);
}
void CachedResourceStreamingClient::dataReceived(PlatformMediaResource&, Ref<SharedBuffer>&& buffer)
{
ASSERT(isMainThread());
WebKitWebSrc* src = WEBKIT_WEB_SRC(m_src.get());
WebKitWebSrcPrivate* priv = src->priv;
DataMutexLocker members { priv->dataMutex };
if (members->requestNumber != m_requestNumber)
return;
// Rough bandwidth calculation. We ignore here the first data package because we would have to reset the counters when we issue the request and
// that first package delivery would include the time of sending out the request and getting the data back. Since we can't distinguish the
// sending time from the receiving time, it is better to ignore it.
if (!std::isnan(members->downloadStartTime)) {
members->totalDownloadedBytes += buffer->size();
double timeSinceStart = (WallTime::now() - members->downloadStartTime).seconds();
GST_TRACE_OBJECT(src, "R%u: downloaded %" G_GUINT64_FORMAT " bytes in %f seconds =~ %1.0f bytes/second", m_requestNumber, members->totalDownloadedBytes, timeSinceStart
, timeSinceStart ? members->totalDownloadedBytes / timeSinceStart : 0);
} else {
members->downloadStartTime = WallTime::now();
}
buffer->forEachSegment([&](auto& segment) {
int length = segment.size();
GST_LOG_OBJECT(src, "R%u: Have %d bytes of data", m_requestNumber, length);
members->readPosition += length;
ASSERT(!members->haveSize || members->readPosition <= members->size);
gst_element_post_message(GST_ELEMENT_CAST(src), gst_message_new_element(GST_OBJECT_CAST(src),
gst_structure_new("webkit-network-statistics", "read-position", G_TYPE_UINT64, members->readPosition, "size", G_TYPE_UINT64, members->size, nullptr)));
checkUpdateBlocksize(length);
GstBuffer* buffer = gstBufferNewWrappedFast(fastMemDup(segment.data(), length), length);
gst_adapter_push(members->adapter.get(), buffer);
});
stopLoaderIfNeeded(src, members);
members->responseCondition.notifyOne();
}
void CachedResourceStreamingClient::accessControlCheckFailed(PlatformMediaResource&, const ResourceError& error)
{
ASSERT(isMainThread());
WebKitWebSrc* src = WEBKIT_WEB_SRC(m_src.get());
DataMutexLocker members { src->priv->dataMutex };
if (members->requestNumber != m_requestNumber)
return;
GST_ELEMENT_ERROR(src, RESOURCE, READ, ("R%u: %s", m_requestNumber, error.localizedDescription().utf8().data()), (nullptr));
members->doesHaveEOS = true;
members->responseCondition.notifyOne();
}
void CachedResourceStreamingClient::loadFailed(PlatformMediaResource&, const ResourceError& error)
{
ASSERT(isMainThread());
WebKitWebSrc* src = WEBKIT_WEB_SRC(m_src.get());
DataMutexLocker members { src->priv->dataMutex };
if (members->requestNumber != m_requestNumber)
return;
if (!error.isCancellation()) {
GST_ERROR_OBJECT(src, "R%u: Have failure: %s", m_requestNumber, error.localizedDescription().utf8().data());
GST_ELEMENT_ERROR(src, RESOURCE, FAILED, ("R%u: %s", m_requestNumber, error.localizedDescription().utf8().data()), (nullptr));
} else
GST_LOG_OBJECT(src, "R%u: Request cancelled: %s", m_requestNumber, error.localizedDescription().utf8().data());
members->doesHaveEOS = true;
members->responseCondition.notifyOne();
}
void CachedResourceStreamingClient::loadFinished(PlatformMediaResource&, const NetworkLoadMetrics&)
{
ASSERT(isMainThread());
WebKitWebSrc* src = WEBKIT_WEB_SRC(m_src.get());
DataMutexLocker members { src->priv->dataMutex };
if (members->requestNumber != m_requestNumber)
return;
GST_LOG_OBJECT(src, "R%u: Load finished. Read position: %" G_GUINT64_FORMAT, m_requestNumber, members->readPosition);
members->doesHaveEOS = true;
members->responseCondition.notifyOne();
}
bool webKitSrcWouldTaintOrigin(WebKitWebSrc* src, const SecurityOrigin& origin)
{
DataMutexLocker members { src->priv->dataMutex };
auto* cachedResourceStreamingClient = reinterpret_cast<CachedResourceStreamingClient*>(members->resource->client());
for (auto& responseOrigin : cachedResourceStreamingClient->securityOrigins()) {
if (!origin.isSameOriginDomain(*responseOrigin))
return true;
}
return false;
}
#endif // ENABLE(VIDEO) && USE(GSTREAMER)