Adding upstream version 3.3.0+dfsg1.upstream/3.3.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 2417 insertions, 0 deletions

diff --git a/channels/rdpgfx/client/rdpgfx_main.c b/channels/rdpgfx/client/rdpgfx_main.c
new file mode 100644
index 0000000..dd59c8b
--- /dev/null
+++ b/channels/rdpgfx/client/rdpgfx_main.c
@@ -0,0 +1,2417 @@
+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * Graphics Pipeline Extension
+ *
+ * Copyright 2013-2014 Marc-Andre Moreau <marcandre.moreau@gmail.com>
+ * Copyright 2015 Thincast Technologies GmbH
+ * Copyright 2015 DI (FH) Martin Haimberger <martin.haimberger@thincast.com>
+ * Copyright 2016 Thincast Technologies GmbH
+ * Copyright 2016 Armin Novak <armin.novak@thincast.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <freerdp/config.h>
+
+#include <winpr/assert.h>
+
+#include <winpr/crt.h>
+#include <winpr/wlog.h>
+#include <winpr/print.h>
+#include <winpr/synch.h>
+#include <winpr/thread.h>
+#include <winpr/stream.h>
+#include <winpr/sysinfo.h>
+#include <winpr/cmdline.h>
+#include <winpr/collections.h>
+
+#include <freerdp/addin.h>
+#include <freerdp/channels/log.h>
+
+#include "rdpgfx_common.h"
+#include "rdpgfx_codec.h"
+
+#include "rdpgfx_main.h"
+
+#define TAG CHANNELS_TAG("rdpgfx.client")
+
+static BOOL delete_surface(const void* key, void* value, void* arg)
+{
+	const UINT16 id = (UINT16)(uintptr_t)(key);
+	RdpgfxClientContext* context = arg;
+	RDPGFX_DELETE_SURFACE_PDU pdu = { 0 };
+
+	WINPR_UNUSED(value);
+	pdu.surfaceId = id - 1;
+
+	if (context)
+	{
+		UINT error = CHANNEL_RC_OK;
+		IFCALLRET(context->DeleteSurface, error, context, &pdu);
+
+		if (error)
+		{
+			WLog_ERR(TAG, "context->DeleteSurface failed with error %" PRIu32 "", error);
+		}
+	}
+	return TRUE;
+}
+
+static void free_surfaces(RdpgfxClientContext* context, wHashTable* SurfaceTable)
+{
+	HashTable_Foreach(SurfaceTable, delete_surface, context);
+}
+
+static void evict_cache_slots(RdpgfxClientContext* context, UINT16 MaxCacheSlots, void** CacheSlots)
+{
+	WINPR_ASSERT(CacheSlots);
+	for (UINT16 index = 0; index < MaxCacheSlots; index++)
+	{
+		if (CacheSlots[index])
+		{
+			RDPGFX_EVICT_CACHE_ENTRY_PDU pdu = { 0 };
+			pdu.cacheSlot = (UINT16)index + 1;
+
+			if (context && context->EvictCacheEntry)
+			{
+				context->EvictCacheEntry(context, &pdu);
+			}
+
+			CacheSlots[index] = NULL;
+		}
+	}
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT rdpgfx_send_caps_advertise_pdu(RdpgfxClientContext* context,
+                                           const RDPGFX_CAPS_ADVERTISE_PDU* pdu)
+{
+	UINT error = CHANNEL_RC_OK;
+	RDPGFX_HEADER header = { 0 };
+	RDPGFX_PLUGIN* gfx = NULL;
+	GENERIC_CHANNEL_CALLBACK* callback = NULL;
+	wStream* s = NULL;
+
+	WINPR_ASSERT(pdu);
+	WINPR_ASSERT(context);
+
+	gfx = (RDPGFX_PLUGIN*)context->handle;
+
+	if (!gfx || !gfx->base.listener_callback)
+		return ERROR_BAD_ARGUMENTS;
+
+	callback = gfx->base.listener_callback->channel_callback;
+
+	header.flags = 0;
+	header.cmdId = RDPGFX_CMDID_CAPSADVERTISE;
+	header.pduLength = RDPGFX_HEADER_SIZE + 2;
+
+	for (UINT16 index = 0; index < pdu->capsSetCount; index++)
+	{
+		const RDPGFX_CAPSET* capsSet = &(pdu->capsSets[index]);
+		header.pduLength += RDPGFX_CAPSET_BASE_SIZE + capsSet->length;
+	}
+
+	DEBUG_RDPGFX(gfx->log, "SendCapsAdvertisePdu %" PRIu16 "", pdu->capsSetCount);
+	s = Stream_New(NULL, header.pduLength);
+
+	if (!s)
+	{
+		WLog_ERR(TAG, "Stream_New failed!");
+		return CHANNEL_RC_NO_MEMORY;
+	}
+
+	if ((error = rdpgfx_write_header(s, &header)))
+		goto fail;
+
+	/* RDPGFX_CAPS_ADVERTISE_PDU */
+	Stream_Write_UINT16(s, pdu->capsSetCount); /* capsSetCount (2 bytes) */
+
+	for (UINT16 index = 0; index < pdu->capsSetCount; index++)
+	{
+		const RDPGFX_CAPSET* capsSet = &(pdu->capsSets[index]);
+		Stream_Write_UINT32(s, capsSet->version); /* version (4 bytes) */
+		Stream_Write_UINT32(s, capsSet->length);  /* capsDataLength (4 bytes) */
+		Stream_Write_UINT32(s, capsSet->flags);   /* capsData (4 bytes) */
+		Stream_Zero(s, capsSet->length - 4);
+	}
+
+	Stream_SealLength(s);
+	error = callback->channel->Write(callback->channel, (UINT32)Stream_Length(s), Stream_Buffer(s),
+	                                 NULL);
+fail:
+	Stream_Free(s, TRUE);
+	return error;
+}
+
+static BOOL rdpgfx_is_capability_filtered(RDPGFX_PLUGIN* gfx, UINT32 caps)
+{
+	WINPR_ASSERT(gfx);
+	const UINT32 filter =
+	    freerdp_settings_get_uint32(gfx->rdpcontext->settings, FreeRDP_GfxCapsFilter);
+	const UINT32 capList[] = { RDPGFX_CAPVERSION_8,   RDPGFX_CAPVERSION_81,
+		                       RDPGFX_CAPVERSION_10,  RDPGFX_CAPVERSION_101,
+		                       RDPGFX_CAPVERSION_102, RDPGFX_CAPVERSION_103,
+		                       RDPGFX_CAPVERSION_104, RDPGFX_CAPVERSION_105,
+		                       RDPGFX_CAPVERSION_106, RDPGFX_CAPVERSION_106_ERR,
+		                       RDPGFX_CAPVERSION_107 };
+
+	for (size_t x = 0; x < ARRAYSIZE(capList); x++)
+	{
+		if (caps == capList[x])
+			return (filter & (1 << x)) != 0;
+	}
+
+	return TRUE;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT rdpgfx_send_supported_caps(GENERIC_CHANNEL_CALLBACK* callback)
+{
+	RDPGFX_PLUGIN* gfx = NULL;
+	RdpgfxClientContext* context = NULL;
+	RDPGFX_CAPSET* capsSet = NULL;
+	RDPGFX_CAPSET capsSets[RDPGFX_NUMBER_CAPSETS] = { 0 };
+	RDPGFX_CAPS_ADVERTISE_PDU pdu = { 0 };
+
+	if (!callback)
+		return ERROR_BAD_ARGUMENTS;
+
+	gfx = (RDPGFX_PLUGIN*)callback->plugin;
+
+	if (!gfx)
+		return ERROR_BAD_CONFIGURATION;
+
+	context = gfx->context;
+
+	if (!context)
+		return ERROR_BAD_CONFIGURATION;
+
+	pdu.capsSetCount = 0;
+	pdu.capsSets = (RDPGFX_CAPSET*)capsSets;
+
+	if (!rdpgfx_is_capability_filtered(gfx, RDPGFX_CAPVERSION_8))
+	{
+		capsSet = &capsSets[pdu.capsSetCount++];
+		capsSet->version = RDPGFX_CAPVERSION_8;
+		capsSet->length = 4;
+		capsSet->flags = 0;
+
+		if (freerdp_settings_get_bool(gfx->rdpcontext->settings, FreeRDP_GfxThinClient))
+			capsSet->flags |= RDPGFX_CAPS_FLAG_THINCLIENT;
+
+		/* in CAPVERSION_8 the spec says that we should not have both
+		 * thinclient and smallcache (and thinclient implies a small cache)
+		 */
+		if (freerdp_settings_get_bool(gfx->rdpcontext->settings, FreeRDP_GfxSmallCache) &&
+		    !freerdp_settings_get_bool(gfx->rdpcontext->settings, FreeRDP_GfxThinClient))
+			capsSet->flags |= RDPGFX_CAPS_FLAG_SMALL_CACHE;
+	}
+
+	if (!rdpgfx_is_capability_filtered(gfx, RDPGFX_CAPVERSION_81))
+	{
+		capsSet = &capsSets[pdu.capsSetCount++];
+		capsSet->version = RDPGFX_CAPVERSION_81;
+		capsSet->length = 4;
+		capsSet->flags = 0;
+
+		if (freerdp_settings_get_bool(gfx->rdpcontext->settings, FreeRDP_GfxThinClient))
+			capsSet->flags |= RDPGFX_CAPS_FLAG_THINCLIENT;
+
+		if (freerdp_settings_get_bool(gfx->rdpcontext->settings, FreeRDP_GfxSmallCache))
+			capsSet->flags |= RDPGFX_CAPS_FLAG_SMALL_CACHE;
+
+#ifdef WITH_GFX_H264
+
+		if (freerdp_settings_get_bool(gfx->rdpcontext->settings, FreeRDP_GfxH264))
+			capsSet->flags |= RDPGFX_CAPS_FLAG_AVC420_ENABLED;
+
+#endif
+	}
+
+	if (!freerdp_settings_get_bool(gfx->rdpcontext->settings, FreeRDP_GfxH264) ||
+	    freerdp_settings_get_bool(gfx->rdpcontext->settings, FreeRDP_GfxAVC444))
+	{
+		UINT32 caps10Flags = 0;
+
+		if (freerdp_settings_get_bool(gfx->rdpcontext->settings, FreeRDP_GfxSmallCache))
+			caps10Flags |= RDPGFX_CAPS_FLAG_SMALL_CACHE;
+
+#ifdef WITH_GFX_H264
+
+		if (!freerdp_settings_get_bool(gfx->rdpcontext->settings, FreeRDP_GfxAVC444))
+			caps10Flags |= RDPGFX_CAPS_FLAG_AVC_DISABLED;
+
+#else
+		caps10Flags |= RDPGFX_CAPS_FLAG_AVC_DISABLED;
+#endif
+
+		if (!rdpgfx_is_capability_filtered(gfx, RDPGFX_CAPVERSION_10))
+		{
+			capsSet = &capsSets[pdu.capsSetCount++];
+			capsSet->version = RDPGFX_CAPVERSION_10;
+			capsSet->length = 4;
+			capsSet->flags = caps10Flags;
+		}
+
+		if (!rdpgfx_is_capability_filtered(gfx, RDPGFX_CAPVERSION_101))
+		{
+			capsSet = &capsSets[pdu.capsSetCount++];
+			capsSet->version = RDPGFX_CAPVERSION_101;
+			capsSet->length = 0x10;
+			capsSet->flags = 0;
+		}
+
+		if (!rdpgfx_is_capability_filtered(gfx, RDPGFX_CAPVERSION_102))
+		{
+			capsSet = &capsSets[pdu.capsSetCount++];
+			capsSet->version = RDPGFX_CAPVERSION_102;
+			capsSet->length = 0x4;
+			capsSet->flags = caps10Flags;
+		}
+
+		if (freerdp_settings_get_bool(gfx->rdpcontext->settings, FreeRDP_GfxThinClient))
+		{
+			if ((caps10Flags & RDPGFX_CAPS_FLAG_AVC_DISABLED) == 0)
+				caps10Flags |= RDPGFX_CAPS_FLAG_AVC_THINCLIENT;
+		}
+
+		if (!rdpgfx_is_capability_filtered(gfx, RDPGFX_CAPVERSION_103))
+		{
+			capsSet = &capsSets[pdu.capsSetCount++];
+			capsSet->version = RDPGFX_CAPVERSION_103;
+			capsSet->length = 0x4;
+			capsSet->flags = caps10Flags & ~RDPGFX_CAPS_FLAG_SMALL_CACHE;
+		}
+
+		if (!rdpgfx_is_capability_filtered(gfx, RDPGFX_CAPVERSION_104))
+		{
+			capsSet = &capsSets[pdu.capsSetCount++];
+			capsSet->version = RDPGFX_CAPVERSION_104;
+			capsSet->length = 0x4;
+			capsSet->flags = caps10Flags;
+		}
+
+		/* The following capabilities expect support for image scaling.
+		 * Disable these for builds that do not have support for that.
+		 */
+#if defined(WITH_CAIRO) || defined(WITH_SWSCALE)
+		if (!rdpgfx_is_capability_filtered(gfx, RDPGFX_CAPVERSION_105))
+		{
+			capsSet = &capsSets[pdu.capsSetCount++];
+			capsSet->version = RDPGFX_CAPVERSION_105;
+			capsSet->length = 0x4;
+			capsSet->flags = caps10Flags;
+		}
+
+		if (!rdpgfx_is_capability_filtered(gfx, RDPGFX_CAPVERSION_106))
+		{
+			capsSet = &capsSets[pdu.capsSetCount++];
+			capsSet->version = RDPGFX_CAPVERSION_106;
+			capsSet->length = 0x4;
+			capsSet->flags = caps10Flags;
+		}
+
+		if (!rdpgfx_is_capability_filtered(gfx, RDPGFX_CAPVERSION_106_ERR))
+		{
+			capsSet = &capsSets[pdu.capsSetCount++];
+			capsSet->version = RDPGFX_CAPVERSION_106_ERR;
+			capsSet->length = 0x4;
+			capsSet->flags = caps10Flags;
+		}
+#endif
+
+		if (!rdpgfx_is_capability_filtered(gfx, RDPGFX_CAPVERSION_107))
+		{
+			capsSet = &capsSets[pdu.capsSetCount++];
+			capsSet->version = RDPGFX_CAPVERSION_107;
+			capsSet->length = 0x4;
+			capsSet->flags = caps10Flags;
+#if !defined(WITH_CAIRO) && !defined(WITH_SWSCALE)
+			capsSet->flags |= RDPGFX_CAPS_FLAG_SCALEDMAP_DISABLE;
+#endif
+		}
+	}
+
+	return IFCALLRESULT(ERROR_BAD_CONFIGURATION, context->CapsAdvertise, context, &pdu);
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT rdpgfx_recv_caps_confirm_pdu(GENERIC_CHANNEL_CALLBACK* callback, wStream* s)
+{
+	RDPGFX_CAPSET capsSet = { 0 };
+	RDPGFX_CAPS_CONFIRM_PDU pdu = { 0 };
+	WINPR_ASSERT(callback);
+	RDPGFX_PLUGIN* gfx = (RDPGFX_PLUGIN*)callback->plugin;
+
+	WINPR_ASSERT(gfx);
+	RdpgfxClientContext* context = gfx->context;
+
+	pdu.capsSet = &capsSet;
+
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, 12))
+		return ERROR_INVALID_DATA;
+
+	Stream_Read_UINT32(s, capsSet.version); /* version (4 bytes) */
+	Stream_Read_UINT32(s, capsSet.length);  /* capsDataLength (4 bytes) */
+	Stream_Read_UINT32(s, capsSet.flags);   /* capsData (4 bytes) */
+	gfx->TotalDecodedFrames = 0;
+	gfx->ConnectionCaps = capsSet;
+	DEBUG_RDPGFX(gfx->log, "RecvCapsConfirmPdu: version: 0x%08" PRIX32 " flags: 0x%08" PRIX32 "",
+	             capsSet.version, capsSet.flags);
+
+	if (!context)
+		return ERROR_BAD_CONFIGURATION;
+
+	return IFCALLRESULT(CHANNEL_RC_OK, context->CapsConfirm, context, &pdu);
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT rdpgfx_send_frame_acknowledge_pdu(RdpgfxClientContext* context,
+                                              const RDPGFX_FRAME_ACKNOWLEDGE_PDU* pdu)
+{
+	UINT error = 0;
+	wStream* s = NULL;
+	RDPGFX_HEADER header = { 0 };
+	RDPGFX_PLUGIN* gfx = NULL;
+	GENERIC_CHANNEL_CALLBACK* callback = NULL;
+
+	if (!context || !pdu)
+		return ERROR_BAD_ARGUMENTS;
+
+	gfx = (RDPGFX_PLUGIN*)context->handle;
+
+	if (!gfx || !gfx->base.listener_callback)
+		return ERROR_BAD_CONFIGURATION;
+
+	callback = gfx->base.listener_callback->channel_callback;
+
+	if (!callback)
+		return ERROR_BAD_CONFIGURATION;
+
+	header.flags = 0;
+	header.cmdId = RDPGFX_CMDID_FRAMEACKNOWLEDGE;
+	header.pduLength = RDPGFX_HEADER_SIZE + 12;
+	DEBUG_RDPGFX(gfx->log, "SendFrameAcknowledgePdu: %" PRIu32 "", pdu->frameId);
+	s = Stream_New(NULL, header.pduLength);
+
+	if (!s)
+	{
+		WLog_ERR(TAG, "Stream_New failed!");
+		return CHANNEL_RC_NO_MEMORY;
+	}
+
+	if ((error = rdpgfx_write_header(s, &header)))
+		goto fail;
+
+	/* RDPGFX_FRAME_ACKNOWLEDGE_PDU */
+	Stream_Write_UINT32(s, pdu->queueDepth);         /* queueDepth (4 bytes) */
+	Stream_Write_UINT32(s, pdu->frameId);            /* frameId (4 bytes) */
+	Stream_Write_UINT32(s, pdu->totalFramesDecoded); /* totalFramesDecoded (4 bytes) */
+	error = callback->channel->Write(callback->channel, (UINT32)Stream_Length(s), Stream_Buffer(s),
+	                                 NULL);
+
+	if (error == CHANNEL_RC_OK) /* frame successfully acked */
+		gfx->UnacknowledgedFrames--;
+
+fail:
+	Stream_Free(s, TRUE);
+	return error;
+}
+
+static UINT rdpgfx_send_qoe_frame_acknowledge_pdu(RdpgfxClientContext* context,
+                                                  const RDPGFX_QOE_FRAME_ACKNOWLEDGE_PDU* pdu)
+{
+	UINT error = 0;
+	wStream* s = NULL;
+	RDPGFX_HEADER header = { 0 };
+	GENERIC_CHANNEL_CALLBACK* callback = NULL;
+	RDPGFX_PLUGIN* gfx = NULL;
+
+	header.flags = 0;
+	header.cmdId = RDPGFX_CMDID_QOEFRAMEACKNOWLEDGE;
+	header.pduLength = RDPGFX_HEADER_SIZE + 12;
+
+	if (!context || !pdu)
+		return ERROR_BAD_ARGUMENTS;
+
+	gfx = (RDPGFX_PLUGIN*)context->handle;
+
+	if (!gfx || !gfx->base.listener_callback)
+		return ERROR_BAD_CONFIGURATION;
+
+	callback = gfx->base.listener_callback->channel_callback;
+
+	if (!callback)
+		return ERROR_BAD_CONFIGURATION;
+
+	DEBUG_RDPGFX(gfx->log, "SendQoeFrameAcknowledgePdu: %" PRIu32 "", pdu->frameId);
+	s = Stream_New(NULL, header.pduLength);
+
+	if (!s)
+	{
+		WLog_ERR(TAG, "Stream_New failed!");
+		return CHANNEL_RC_NO_MEMORY;
+	}
+
+	if ((error = rdpgfx_write_header(s, &header)))
+		goto fail;
+
+	/* RDPGFX_FRAME_ACKNOWLEDGE_PDU */
+	Stream_Write_UINT32(s, pdu->frameId);
+	Stream_Write_UINT32(s, pdu->timestamp);
+	Stream_Write_UINT16(s, pdu->timeDiffSE);
+	Stream_Write_UINT16(s, pdu->timeDiffEDR);
+	error = callback->channel->Write(callback->channel, (UINT32)Stream_Length(s), Stream_Buffer(s),
+	                                 NULL);
+fail:
+	Stream_Free(s, TRUE);
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT rdpgfx_recv_reset_graphics_pdu(GENERIC_CHANNEL_CALLBACK* callback, wStream* s)
+{
+	int pad = 0;
+	MONITOR_DEF* monitor = NULL;
+	RDPGFX_RESET_GRAPHICS_PDU pdu = { 0 };
+	WINPR_ASSERT(callback);
+
+	RDPGFX_PLUGIN* gfx = (RDPGFX_PLUGIN*)callback->plugin;
+
+	WINPR_ASSERT(gfx);
+
+	RdpgfxClientContext* context = gfx->context;
+	UINT error = CHANNEL_RC_OK;
+	GraphicsResetEventArgs graphicsReset = { 0 };
+
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, 12))
+		return ERROR_INVALID_DATA;
+
+	Stream_Read_UINT32(s, pdu.width);        /* width (4 bytes) */
+	Stream_Read_UINT32(s, pdu.height);       /* height (4 bytes) */
+	Stream_Read_UINT32(s, pdu.monitorCount); /* monitorCount (4 bytes) */
+
+	if (!Stream_CheckAndLogRequiredLengthOfSize(TAG, s, pdu.monitorCount, 20ull))
+		return ERROR_INVALID_DATA;
+
+	pdu.monitorDefArray = (MONITOR_DEF*)calloc(pdu.monitorCount, sizeof(MONITOR_DEF));
+
+	if (!pdu.monitorDefArray)
+	{
+		WLog_Print(gfx->log, WLOG_ERROR, "calloc failed!");
+		return CHANNEL_RC_NO_MEMORY;
+	}
+
+	for (UINT32 index = 0; index < pdu.monitorCount; index++)
+	{
+		monitor = &(pdu.monitorDefArray[index]);
+		Stream_Read_INT32(s, monitor->left);   /* left (4 bytes) */
+		Stream_Read_INT32(s, monitor->top);    /* top (4 bytes) */
+		Stream_Read_INT32(s, monitor->right);  /* right (4 bytes) */
+		Stream_Read_INT32(s, monitor->bottom); /* bottom (4 bytes) */
+		Stream_Read_UINT32(s, monitor->flags); /* flags (4 bytes) */
+	}
+
+	pad = 340 - (RDPGFX_HEADER_SIZE + 12 + (pdu.monitorCount * 20));
+
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, (size_t)pad))
+	{
+		free(pdu.monitorDefArray);
+		return CHANNEL_RC_NO_MEMORY;
+	}
+
+	Stream_Seek(s, pad); /* pad (total size is 340 bytes) */
+	DEBUG_RDPGFX(gfx->log,
+	             "RecvResetGraphicsPdu: width: %" PRIu32 " height: %" PRIu32 " count: %" PRIu32 "",
+	             pdu.width, pdu.height, pdu.monitorCount);
+
+#if defined(WITH_DEBUG_RDPGFX)
+	for (UINT32 index = 0; index < pdu.monitorCount; index++)
+	{
+		monitor = &(pdu.monitorDefArray[index]);
+		DEBUG_RDPGFX(gfx->log,
+		             "RecvResetGraphicsPdu: monitor left:%" PRIi32 " top:%" PRIi32 " right:%" PRIi32
+		             " bottom:%" PRIi32 " flags:0x%" PRIx32 "",
+		             monitor->left, monitor->top, monitor->right, monitor->bottom, monitor->flags);
+	}
+#endif
+
+	if (context)
+	{
+		IFCALLRET(context->ResetGraphics, error, context, &pdu);
+
+		if (error)
+			WLog_Print(gfx->log, WLOG_ERROR, "context->ResetGraphics failed with error %" PRIu32 "",
+			           error);
+	}
+
+	/* some listeners may be interested (namely the display channel) */
+	EventArgsInit(&graphicsReset, "libfreerdp");
+	graphicsReset.width = pdu.width;
+	graphicsReset.height = pdu.height;
+	PubSub_OnGraphicsReset(gfx->rdpcontext->pubSub, gfx->rdpcontext, &graphicsReset);
+	free(pdu.monitorDefArray);
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT rdpgfx_recv_evict_cache_entry_pdu(GENERIC_CHANNEL_CALLBACK* callback, wStream* s)
+{
+	RDPGFX_EVICT_CACHE_ENTRY_PDU pdu = { 0 };
+	WINPR_ASSERT(callback);
+	RDPGFX_PLUGIN* gfx = (RDPGFX_PLUGIN*)callback->plugin;
+	WINPR_ASSERT(gfx);
+	RdpgfxClientContext* context = gfx->context;
+	UINT error = CHANNEL_RC_OK;
+
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, 2))
+		return ERROR_INVALID_DATA;
+
+	Stream_Read_UINT16(s, pdu.cacheSlot); /* cacheSlot (2 bytes) */
+	WLog_Print(gfx->log, WLOG_DEBUG, "RecvEvictCacheEntryPdu: cacheSlot: %" PRIu16 "",
+	           pdu.cacheSlot);
+
+	if (context)
+	{
+		IFCALLRET(context->EvictCacheEntry, error, context, &pdu);
+
+		if (error)
+			WLog_Print(gfx->log, WLOG_ERROR,
+			           "context->EvictCacheEntry failed with error %" PRIu32 "", error);
+	}
+
+	return error;
+}
+
+/**
+ * Load cache import offer from file (offline replay)
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT rdpgfx_load_cache_import_offer(RDPGFX_PLUGIN* gfx, RDPGFX_CACHE_IMPORT_OFFER_PDU* offer)
+{
+	int count = 0;
+	UINT error = CHANNEL_RC_OK;
+	PERSISTENT_CACHE_ENTRY entry;
+	rdpPersistentCache* persistent = NULL;
+	WINPR_ASSERT(gfx);
+	WINPR_ASSERT(gfx->rdpcontext);
+	rdpSettings* settings = gfx->rdpcontext->settings;
+
+	WINPR_ASSERT(offer);
+	WINPR_ASSERT(settings);
+
+	offer->cacheEntriesCount = 0;
+
+	if (!freerdp_settings_get_bool(settings, FreeRDP_BitmapCachePersistEnabled))
+		return CHANNEL_RC_OK;
+
+	const char* BitmapCachePersistFile =
+	    freerdp_settings_get_string(settings, FreeRDP_BitmapCachePersistFile);
+	if (!BitmapCachePersistFile)
+		return CHANNEL_RC_OK;
+
+	persistent = persistent_cache_new();
+
+	if (!persistent)
+		return CHANNEL_RC_NO_MEMORY;
+
+	if (persistent_cache_open(persistent, BitmapCachePersistFile, FALSE, 3) < 1)
+	{
+		error = CHANNEL_RC_INITIALIZATION_ERROR;
+		goto fail;
+	}
+
+	if (persistent_cache_get_version(persistent) != 3)
+	{
+		error = ERROR_INVALID_DATA;
+		goto fail;
+	}
+
+	count = persistent_cache_get_count(persistent);
+
+	if (count < 1)
+	{
+		error = ERROR_INVALID_DATA;
+		goto fail;
+	}
+
+	if (count >= RDPGFX_CACHE_ENTRY_MAX_COUNT)
+		count = RDPGFX_CACHE_ENTRY_MAX_COUNT - 1;
+
+	if (count > gfx->MaxCacheSlots)
+		count = gfx->MaxCacheSlots;
+
+	offer->cacheEntriesCount = (UINT16)count;
+
+	for (int idx = 0; idx < count; idx++)
+	{
+		if (persistent_cache_read_entry(persistent, &entry) < 1)
+		{
+			error = ERROR_INVALID_DATA;
+			goto fail;
+		}
+
+		offer->cacheEntries[idx].cacheKey = entry.key64;
+		offer->cacheEntries[idx].bitmapLength = entry.size;
+	}
+
+	persistent_cache_free(persistent);
+
+	return error;
+fail:
+	persistent_cache_free(persistent);
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT rdpgfx_save_persistent_cache(RDPGFX_PLUGIN* gfx)
+{
+	UINT error = CHANNEL_RC_OK;
+	PERSISTENT_CACHE_ENTRY cacheEntry;
+	rdpPersistentCache* persistent = NULL;
+	WINPR_ASSERT(gfx);
+	WINPR_ASSERT(gfx->rdpcontext);
+	rdpSettings* settings = gfx->rdpcontext->settings;
+	RdpgfxClientContext* context = gfx->context;
+
+	WINPR_ASSERT(context);
+	WINPR_ASSERT(settings);
+
+	if (!freerdp_settings_get_bool(settings, FreeRDP_BitmapCachePersistEnabled))
+		return CHANNEL_RC_OK;
+
+	const char* BitmapCachePersistFile =
+	    freerdp_settings_get_string(settings, FreeRDP_BitmapCachePersistFile);
+	if (!BitmapCachePersistFile)
+		return CHANNEL_RC_OK;
+
+	if (!context->ExportCacheEntry)
+		return CHANNEL_RC_INITIALIZATION_ERROR;
+
+	persistent = persistent_cache_new();
+
+	if (!persistent)
+		return CHANNEL_RC_NO_MEMORY;
+
+	if (persistent_cache_open(persistent, BitmapCachePersistFile, TRUE, 3) < 1)
+	{
+		error = CHANNEL_RC_INITIALIZATION_ERROR;
+		goto fail;
+	}
+
+	for (UINT16 idx = 0; idx < gfx->MaxCacheSlots; idx++)
+	{
+		if (gfx->CacheSlots[idx])
+		{
+			UINT16 cacheSlot = (UINT16)idx;
+
+			if (context->ExportCacheEntry(context, cacheSlot, &cacheEntry) != CHANNEL_RC_OK)
+				continue;
+
+			persistent_cache_write_entry(persistent, &cacheEntry);
+		}
+	}
+
+	persistent_cache_free(persistent);
+
+	return error;
+fail:
+	persistent_cache_free(persistent);
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT rdpgfx_send_cache_import_offer_pdu(RdpgfxClientContext* context,
+                                               const RDPGFX_CACHE_IMPORT_OFFER_PDU* pdu)
+{
+	UINT error = CHANNEL_RC_OK;
+	wStream* s = NULL;
+	RDPGFX_HEADER header;
+	GENERIC_CHANNEL_CALLBACK* callback = NULL;
+	WINPR_ASSERT(context);
+	RDPGFX_PLUGIN* gfx = (RDPGFX_PLUGIN*)context->handle;
+
+	if (!context || !pdu)
+		return ERROR_BAD_ARGUMENTS;
+
+	gfx = (RDPGFX_PLUGIN*)context->handle;
+
+	if (!gfx || !gfx->base.listener_callback)
+		return ERROR_BAD_CONFIGURATION;
+
+	callback = gfx->base.listener_callback->channel_callback;
+
+	if (!callback)
+		return ERROR_BAD_CONFIGURATION;
+
+	header.flags = 0;
+	header.cmdId = RDPGFX_CMDID_CACHEIMPORTOFFER;
+	header.pduLength = RDPGFX_HEADER_SIZE + 2 + pdu->cacheEntriesCount * 12;
+	DEBUG_RDPGFX(gfx->log, "SendCacheImportOfferPdu: cacheEntriesCount: %" PRIu16 "",
+	             pdu->cacheEntriesCount);
+	s = Stream_New(NULL, header.pduLength);
+
+	if (!s)
+	{
+		WLog_ERR(TAG, "Stream_New failed!");
+		return CHANNEL_RC_NO_MEMORY;
+	}
+
+	if ((error = rdpgfx_write_header(s, &header)))
+		goto fail;
+
+	if (pdu->cacheEntriesCount <= 0)
+	{
+		WLog_ERR(TAG, "Invalid cacheEntriesCount: %" PRIu16 "", pdu->cacheEntriesCount);
+		error = ERROR_INVALID_DATA;
+		goto fail;
+	}
+
+	/* cacheEntriesCount (2 bytes) */
+	Stream_Write_UINT16(s, pdu->cacheEntriesCount);
+
+	for (UINT16 index = 0; index < pdu->cacheEntriesCount; index++)
+	{
+		const RDPGFX_CACHE_ENTRY_METADATA* cacheEntry = &(pdu->cacheEntries[index]);
+		Stream_Write_UINT64(s, cacheEntry->cacheKey);     /* cacheKey (8 bytes) */
+		Stream_Write_UINT32(s, cacheEntry->bitmapLength); /* bitmapLength (4 bytes) */
+	}
+
+	error = callback->channel->Write(callback->channel, (UINT32)Stream_Length(s), Stream_Buffer(s),
+	                                 NULL);
+
+fail:
+	Stream_Free(s, TRUE);
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT rdpgfx_send_cache_offer(RDPGFX_PLUGIN* gfx)
+{
+	int count = 0;
+	UINT error = CHANNEL_RC_OK;
+	PERSISTENT_CACHE_ENTRY entry;
+	RDPGFX_CACHE_IMPORT_OFFER_PDU* offer = NULL;
+	rdpPersistentCache* persistent = NULL;
+
+	WINPR_ASSERT(gfx);
+	WINPR_ASSERT(gfx->rdpcontext);
+
+	RdpgfxClientContext* context = gfx->context;
+	rdpSettings* settings = gfx->rdpcontext->settings;
+
+	if (!freerdp_settings_get_bool(settings, FreeRDP_BitmapCachePersistEnabled))
+		return CHANNEL_RC_OK;
+
+	const char* BitmapCachePersistFile =
+	    freerdp_settings_get_string(settings, FreeRDP_BitmapCachePersistFile);
+	if (!BitmapCachePersistFile)
+		return CHANNEL_RC_OK;
+
+	persistent = persistent_cache_new();
+
+	if (!persistent)
+		return CHANNEL_RC_NO_MEMORY;
+
+	if (persistent_cache_open(persistent, BitmapCachePersistFile, FALSE, 3) < 1)
+	{
+		error = CHANNEL_RC_INITIALIZATION_ERROR;
+		goto fail;
+	}
+
+	if (persistent_cache_get_version(persistent) != 3)
+	{
+		error = ERROR_INVALID_DATA;
+		goto fail;
+	}
+
+	count = persistent_cache_get_count(persistent);
+
+	if (count >= RDPGFX_CACHE_ENTRY_MAX_COUNT)
+		count = RDPGFX_CACHE_ENTRY_MAX_COUNT - 1;
+
+	if (count > gfx->MaxCacheSlots)
+		count = gfx->MaxCacheSlots;
+
+	offer = (RDPGFX_CACHE_IMPORT_OFFER_PDU*)calloc(1, sizeof(RDPGFX_CACHE_IMPORT_OFFER_PDU));
+	if (!offer)
+	{
+		error = CHANNEL_RC_NO_MEMORY;
+		goto fail;
+	}
+
+	offer->cacheEntriesCount = (UINT16)count;
+
+	WLog_DBG(TAG, "Sending Cache Import Offer: %d", count);
+
+	for (int idx = 0; idx < count; idx++)
+	{
+		if (persistent_cache_read_entry(persistent, &entry) < 1)
+		{
+			error = ERROR_INVALID_DATA;
+			goto fail;
+		}
+
+		offer->cacheEntries[idx].cacheKey = entry.key64;
+		offer->cacheEntries[idx].bitmapLength = entry.size;
+	}
+
+	if (offer->cacheEntriesCount > 0)
+	{
+		error = rdpgfx_send_cache_import_offer_pdu(context, offer);
+		if (error != CHANNEL_RC_OK)
+		{
+			WLog_Print(gfx->log, WLOG_ERROR, "Failed to send cache import offer PDU");
+			goto fail;
+		}
+	}
+
+fail:
+	persistent_cache_free(persistent);
+	free(offer);
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT rdpgfx_load_cache_import_reply(RDPGFX_PLUGIN* gfx,
+                                           const RDPGFX_CACHE_IMPORT_REPLY_PDU* reply)
+{
+	int count = 0;
+	UINT error = CHANNEL_RC_OK;
+	rdpPersistentCache* persistent = NULL;
+	WINPR_ASSERT(gfx);
+	WINPR_ASSERT(gfx->rdpcontext);
+	rdpSettings* settings = gfx->rdpcontext->settings;
+	RdpgfxClientContext* context = gfx->context;
+
+	WINPR_ASSERT(settings);
+	WINPR_ASSERT(reply);
+	if (!freerdp_settings_get_bool(settings, FreeRDP_BitmapCachePersistEnabled))
+		return CHANNEL_RC_OK;
+
+	const char* BitmapCachePersistFile =
+	    freerdp_settings_get_string(settings, FreeRDP_BitmapCachePersistFile);
+	if (!BitmapCachePersistFile)
+		return CHANNEL_RC_OK;
+
+	persistent = persistent_cache_new();
+
+	if (!persistent)
+		return CHANNEL_RC_NO_MEMORY;
+
+	if (persistent_cache_open(persistent, BitmapCachePersistFile, FALSE, 3) < 1)
+	{
+		error = CHANNEL_RC_INITIALIZATION_ERROR;
+		goto fail;
+	}
+
+	if (persistent_cache_get_version(persistent) != 3)
+	{
+		error = ERROR_INVALID_DATA;
+		goto fail;
+	}
+
+	count = persistent_cache_get_count(persistent);
+
+	count = (count < reply->importedEntriesCount) ? count : reply->importedEntriesCount;
+
+	WLog_DBG(TAG, "Receiving Cache Import Reply: %d", count);
+
+	for (int idx = 0; idx < count; idx++)
+	{
+		PERSISTENT_CACHE_ENTRY entry = { 0 };
+		if (persistent_cache_read_entry(persistent, &entry) < 1)
+		{
+			error = ERROR_INVALID_DATA;
+			goto fail;
+		}
+
+		const UINT16 cacheSlot = reply->cacheSlots[idx];
+		if (context && context->ImportCacheEntry)
+			context->ImportCacheEntry(context, cacheSlot, &entry);
+	}
+
+	persistent_cache_free(persistent);
+
+	return error;
+fail:
+	persistent_cache_free(persistent);
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT rdpgfx_recv_cache_import_reply_pdu(GENERIC_CHANNEL_CALLBACK* callback, wStream* s)
+{
+	RDPGFX_CACHE_IMPORT_REPLY_PDU pdu = { 0 };
+	WINPR_ASSERT(callback);
+	RDPGFX_PLUGIN* gfx = (RDPGFX_PLUGIN*)callback->plugin;
+	WINPR_ASSERT(gfx);
+	RdpgfxClientContext* context = gfx->context;
+	UINT error = CHANNEL_RC_OK;
+
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, 2))
+		return ERROR_INVALID_DATA;
+
+	Stream_Read_UINT16(s, pdu.importedEntriesCount); /* cacheSlot (2 bytes) */
+
+	if (!Stream_CheckAndLogRequiredLengthOfSize(TAG, s, pdu.importedEntriesCount, 2ull))
+		return ERROR_INVALID_DATA;
+
+	if (pdu.importedEntriesCount > RDPGFX_CACHE_ENTRY_MAX_COUNT)
+		return ERROR_INVALID_DATA;
+
+	for (UINT16 idx = 0; idx < pdu.importedEntriesCount; idx++)
+	{
+		Stream_Read_UINT16(s, pdu.cacheSlots[idx]); /* cacheSlot (2 bytes) */
+	}
+
+	DEBUG_RDPGFX(gfx->log, "RecvCacheImportReplyPdu: importedEntriesCount: %" PRIu16 "",
+	             pdu.importedEntriesCount);
+
+	error = rdpgfx_load_cache_import_reply(gfx, &pdu);
+
+	if (error)
+	{
+		WLog_Print(gfx->log, WLOG_ERROR,
+		           "rdpgfx_load_cache_import_reply failed with error %" PRIu32 "", error);
+		return error;
+	}
+
+	if (context)
+	{
+		IFCALLRET(context->CacheImportReply, error, context, &pdu);
+
+		if (error)
+			WLog_Print(gfx->log, WLOG_ERROR,
+			           "context->CacheImportReply failed with error %" PRIu32 "", error);
+	}
+
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT rdpgfx_recv_create_surface_pdu(GENERIC_CHANNEL_CALLBACK* callback, wStream* s)
+{
+	RDPGFX_CREATE_SURFACE_PDU pdu = { 0 };
+	WINPR_ASSERT(callback);
+	RDPGFX_PLUGIN* gfx = (RDPGFX_PLUGIN*)callback->plugin;
+	WINPR_ASSERT(gfx);
+	RdpgfxClientContext* context = gfx->context;
+	UINT error = CHANNEL_RC_OK;
+
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, 7))
+		return ERROR_INVALID_DATA;
+
+	Stream_Read_UINT16(s, pdu.surfaceId);  /* surfaceId (2 bytes) */
+	Stream_Read_UINT16(s, pdu.width);      /* width (2 bytes) */
+	Stream_Read_UINT16(s, pdu.height);     /* height (2 bytes) */
+	Stream_Read_UINT8(s, pdu.pixelFormat); /* RDPGFX_PIXELFORMAT (1 byte) */
+	DEBUG_RDPGFX(gfx->log,
+	             "RecvCreateSurfacePdu: surfaceId: %" PRIu16 " width: %" PRIu16 " height: %" PRIu16
+	             " pixelFormat: 0x%02" PRIX8 "",
+	             pdu.surfaceId, pdu.width, pdu.height, pdu.pixelFormat);
+
+	if (context)
+	{
+		/* create surface PDU sometimes happens for surface ID that are already in use and have not
+		 * been removed yet. Ensure that there is no surface with the new ID by trying to remove it
+		 * manually.
+		 */
+		RDPGFX_DELETE_SURFACE_PDU deletePdu = { pdu.surfaceId };
+		IFCALL(context->DeleteSurface, context, &deletePdu);
+
+		IFCALLRET(context->CreateSurface, error, context, &pdu);
+
+		if (error)
+			WLog_Print(gfx->log, WLOG_ERROR, "context->CreateSurface failed with error %" PRIu32 "",
+			           error);
+	}
+
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT rdpgfx_recv_delete_surface_pdu(GENERIC_CHANNEL_CALLBACK* callback, wStream* s)
+{
+	RDPGFX_DELETE_SURFACE_PDU pdu = { 0 };
+	WINPR_ASSERT(callback);
+	RDPGFX_PLUGIN* gfx = (RDPGFX_PLUGIN*)callback->plugin;
+	WINPR_ASSERT(gfx);
+	RdpgfxClientContext* context = gfx->context;
+	UINT error = CHANNEL_RC_OK;
+
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, 2))
+		return ERROR_INVALID_DATA;
+
+	Stream_Read_UINT16(s, pdu.surfaceId); /* surfaceId (2 bytes) */
+	DEBUG_RDPGFX(gfx->log, "RecvDeleteSurfacePdu: surfaceId: %" PRIu16 "", pdu.surfaceId);
+
+	if (context)
+	{
+		IFCALLRET(context->DeleteSurface, error, context, &pdu);
+
+		if (error)
+			WLog_Print(gfx->log, WLOG_ERROR, "context->DeleteSurface failed with error %" PRIu32 "",
+			           error);
+	}
+
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT rdpgfx_recv_start_frame_pdu(GENERIC_CHANNEL_CALLBACK* callback, wStream* s)
+{
+	RDPGFX_START_FRAME_PDU pdu = { 0 };
+	WINPR_ASSERT(callback);
+	RDPGFX_PLUGIN* gfx = (RDPGFX_PLUGIN*)callback->plugin;
+	WINPR_ASSERT(gfx);
+	RdpgfxClientContext* context = gfx->context;
+	UINT error = CHANNEL_RC_OK;
+
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, RDPGFX_START_FRAME_PDU_SIZE))
+		return ERROR_INVALID_DATA;
+
+	Stream_Read_UINT32(s, pdu.timestamp); /* timestamp (4 bytes) */
+	Stream_Read_UINT32(s, pdu.frameId);   /* frameId (4 bytes) */
+	DEBUG_RDPGFX(gfx->log, "RecvStartFramePdu: frameId: %" PRIu32 " timestamp: 0x%08" PRIX32 "",
+	             pdu.frameId, pdu.timestamp);
+	gfx->StartDecodingTime = GetTickCount64();
+
+	if (context)
+	{
+		IFCALLRET(context->StartFrame, error, context, &pdu);
+
+		if (error)
+			WLog_Print(gfx->log, WLOG_ERROR, "context->StartFrame failed with error %" PRIu32 "",
+			           error);
+	}
+
+	gfx->UnacknowledgedFrames++;
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT rdpgfx_recv_end_frame_pdu(GENERIC_CHANNEL_CALLBACK* callback, wStream* s)
+{
+	RDPGFX_END_FRAME_PDU pdu = { 0 };
+	RDPGFX_FRAME_ACKNOWLEDGE_PDU ack = { 0 };
+	WINPR_ASSERT(callback);
+	RDPGFX_PLUGIN* gfx = (RDPGFX_PLUGIN*)callback->plugin;
+	WINPR_ASSERT(gfx);
+	RdpgfxClientContext* context = gfx->context;
+	UINT error = CHANNEL_RC_OK;
+
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, RDPGFX_END_FRAME_PDU_SIZE))
+		return ERROR_INVALID_DATA;
+
+	Stream_Read_UINT32(s, pdu.frameId); /* frameId (4 bytes) */
+	DEBUG_RDPGFX(gfx->log, "RecvEndFramePdu: frameId: %" PRIu32 "", pdu.frameId);
+
+	if (context)
+	{
+		IFCALLRET(context->EndFrame, error, context, &pdu);
+
+		if (error)
+		{
+			WLog_Print(gfx->log, WLOG_ERROR, "context->EndFrame failed with error %" PRIu32 "",
+			           error);
+			return error;
+		}
+	}
+
+	gfx->TotalDecodedFrames++;
+
+	if (!gfx->sendFrameAcks)
+		return error;
+
+	ack.frameId = pdu.frameId;
+	ack.totalFramesDecoded = gfx->TotalDecodedFrames;
+
+	if (gfx->suspendFrameAcks)
+	{
+		ack.queueDepth = SUSPEND_FRAME_ACKNOWLEDGEMENT;
+
+		if (gfx->TotalDecodedFrames == 1)
+			if ((error = rdpgfx_send_frame_acknowledge_pdu(context, &ack)))
+				WLog_Print(gfx->log, WLOG_ERROR,
+				           "rdpgfx_send_frame_acknowledge_pdu failed with error %" PRIu32 "",
+				           error);
+	}
+	else
+	{
+		ack.queueDepth = QUEUE_DEPTH_UNAVAILABLE;
+
+		if ((error = rdpgfx_send_frame_acknowledge_pdu(context, &ack)))
+			WLog_Print(gfx->log, WLOG_ERROR,
+			           "rdpgfx_send_frame_acknowledge_pdu failed with error %" PRIu32 "", error);
+	}
+
+	switch (gfx->ConnectionCaps.version)
+	{
+		case RDPGFX_CAPVERSION_10:
+		case RDPGFX_CAPVERSION_102:
+		case RDPGFX_CAPVERSION_103:
+		case RDPGFX_CAPVERSION_104:
+		case RDPGFX_CAPVERSION_105:
+		case RDPGFX_CAPVERSION_106:
+		case RDPGFX_CAPVERSION_106_ERR:
+		case RDPGFX_CAPVERSION_107:
+			if (freerdp_settings_get_bool(gfx->rdpcontext->settings, FreeRDP_GfxSendQoeAck))
+			{
+				RDPGFX_QOE_FRAME_ACKNOWLEDGE_PDU qoe;
+				UINT64 diff = (GetTickCount64() - gfx->StartDecodingTime);
+
+				if (diff > 65000)
+					diff = 0;
+
+				qoe.frameId = pdu.frameId;
+				qoe.timestamp = gfx->StartDecodingTime;
+				qoe.timeDiffSE = diff;
+				qoe.timeDiffEDR = 1;
+
+				if ((error = rdpgfx_send_qoe_frame_acknowledge_pdu(context, &qoe)))
+					WLog_Print(gfx->log, WLOG_ERROR,
+					           "rdpgfx_send_qoe_frame_acknowledge_pdu failed with error %" PRIu32
+					           "",
+					           error);
+			}
+
+			break;
+
+		default:
+			break;
+	}
+
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT rdpgfx_recv_wire_to_surface_1_pdu(GENERIC_CHANNEL_CALLBACK* callback, wStream* s)
+{
+	RDPGFX_SURFACE_COMMAND cmd = { 0 };
+	RDPGFX_WIRE_TO_SURFACE_PDU_1 pdu = { 0 };
+	WINPR_ASSERT(callback);
+	RDPGFX_PLUGIN* gfx = (RDPGFX_PLUGIN*)callback->plugin;
+	UINT error = 0;
+
+	WINPR_ASSERT(gfx);
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, RDPGFX_WIRE_TO_SURFACE_PDU_1_SIZE))
+		return ERROR_INVALID_DATA;
+
+	Stream_Read_UINT16(s, pdu.surfaceId);  /* surfaceId (2 bytes) */
+	Stream_Read_UINT16(s, pdu.codecId);    /* codecId (2 bytes) */
+	Stream_Read_UINT8(s, pdu.pixelFormat); /* pixelFormat (1 byte) */
+
+	if ((error = rdpgfx_read_rect16(s, &(pdu.destRect)))) /* destRect (8 bytes) */
+	{
+		WLog_Print(gfx->log, WLOG_ERROR, "rdpgfx_read_rect16 failed with error %" PRIu32 "", error);
+		return error;
+	}
+
+	Stream_Read_UINT32(s, pdu.bitmapDataLength); /* bitmapDataLength (4 bytes) */
+
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, pdu.bitmapDataLength))
+		return ERROR_INVALID_DATA;
+
+	pdu.bitmapData = Stream_Pointer(s);
+	Stream_Seek(s, pdu.bitmapDataLength);
+
+	DEBUG_RDPGFX(gfx->log,
+	             "RecvWireToSurface1Pdu: surfaceId: %" PRIu16 " codecId: %s (0x%04" PRIX16
+	             ") pixelFormat: 0x%02" PRIX8 " "
+	             "destRect: left: %" PRIu16 " top: %" PRIu16 " right: %" PRIu16 " bottom: %" PRIu16
+	             " bitmapDataLength: %" PRIu32 "",
+	             pdu.surfaceId, rdpgfx_get_codec_id_string(pdu.codecId), pdu.codecId,
+	             pdu.pixelFormat, pdu.destRect.left, pdu.destRect.top, pdu.destRect.right,
+	             pdu.destRect.bottom, pdu.bitmapDataLength);
+	cmd.surfaceId = pdu.surfaceId;
+	cmd.codecId = pdu.codecId;
+	cmd.contextId = 0;
+
+	switch (pdu.pixelFormat)
+	{
+		case GFX_PIXEL_FORMAT_XRGB_8888:
+			cmd.format = PIXEL_FORMAT_BGRX32;
+			break;
+
+		case GFX_PIXEL_FORMAT_ARGB_8888:
+			cmd.format = PIXEL_FORMAT_BGRA32;
+			break;
+
+		default:
+			return ERROR_INVALID_DATA;
+	}
+
+	cmd.left = pdu.destRect.left;
+	cmd.top = pdu.destRect.top;
+	cmd.right = pdu.destRect.right;
+	cmd.bottom = pdu.destRect.bottom;
+	cmd.width = cmd.right - cmd.left;
+	cmd.height = cmd.bottom - cmd.top;
+	cmd.length = pdu.bitmapDataLength;
+	cmd.data = pdu.bitmapData;
+	cmd.extra = NULL;
+
+	if (cmd.right < cmd.left)
+	{
+		WLog_Print(gfx->log, WLOG_ERROR, "RecvWireToSurface1Pdu right=%" PRIu32 " < left=%" PRIu32,
+		           cmd.right, cmd.left);
+		return ERROR_INVALID_DATA;
+	}
+	if (cmd.bottom < cmd.top)
+	{
+		WLog_Print(gfx->log, WLOG_ERROR, "RecvWireToSurface1Pdu bottom=%" PRIu32 " < top=%" PRIu32,
+		           cmd.bottom, cmd.top);
+		return ERROR_INVALID_DATA;
+	}
+
+	if ((error = rdpgfx_decode(gfx, &cmd)))
+		WLog_Print(gfx->log, WLOG_ERROR, "rdpgfx_decode failed with error %" PRIu32 "!", error);
+
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT rdpgfx_recv_wire_to_surface_2_pdu(GENERIC_CHANNEL_CALLBACK* callback, wStream* s)
+{
+	RDPGFX_SURFACE_COMMAND cmd = { 0 };
+	RDPGFX_WIRE_TO_SURFACE_PDU_2 pdu = { 0 };
+	WINPR_ASSERT(callback);
+	RDPGFX_PLUGIN* gfx = (RDPGFX_PLUGIN*)callback->plugin;
+	WINPR_ASSERT(gfx);
+	RdpgfxClientContext* context = gfx->context;
+	UINT error = CHANNEL_RC_OK;
+
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, RDPGFX_WIRE_TO_SURFACE_PDU_2_SIZE))
+		return ERROR_INVALID_DATA;
+
+	Stream_Read_UINT16(s, pdu.surfaceId);        /* surfaceId (2 bytes) */
+	Stream_Read_UINT16(s, pdu.codecId);          /* codecId (2 bytes) */
+	Stream_Read_UINT32(s, pdu.codecContextId);   /* codecContextId (4 bytes) */
+	Stream_Read_UINT8(s, pdu.pixelFormat);       /* pixelFormat (1 byte) */
+	Stream_Read_UINT32(s, pdu.bitmapDataLength); /* bitmapDataLength (4 bytes) */
+	pdu.bitmapData = Stream_Pointer(s);
+	Stream_Seek(s, pdu.bitmapDataLength);
+
+	DEBUG_RDPGFX(gfx->log,
+	             "RecvWireToSurface2Pdu: surfaceId: %" PRIu16 " codecId: %s (0x%04" PRIX16 ") "
+	             "codecContextId: %" PRIu32 " pixelFormat: 0x%02" PRIX8
+	             " bitmapDataLength: %" PRIu32 "",
+	             pdu.surfaceId, rdpgfx_get_codec_id_string(pdu.codecId), pdu.codecId,
+	             pdu.codecContextId, pdu.pixelFormat, pdu.bitmapDataLength);
+
+	cmd.surfaceId = pdu.surfaceId;
+	cmd.codecId = pdu.codecId;
+	cmd.contextId = pdu.codecContextId;
+
+	switch (pdu.pixelFormat)
+	{
+		case GFX_PIXEL_FORMAT_XRGB_8888:
+			cmd.format = PIXEL_FORMAT_BGRX32;
+			break;
+
+		case GFX_PIXEL_FORMAT_ARGB_8888:
+			cmd.format = PIXEL_FORMAT_BGRA32;
+			break;
+
+		default:
+			return ERROR_INVALID_DATA;
+	}
+
+	cmd.left = 0;
+	cmd.top = 0;
+	cmd.right = 0;
+	cmd.bottom = 0;
+	cmd.width = 0;
+	cmd.height = 0;
+	cmd.length = pdu.bitmapDataLength;
+	cmd.data = pdu.bitmapData;
+	cmd.extra = NULL;
+
+	if (context)
+	{
+		IFCALLRET(context->SurfaceCommand, error, context, &cmd);
+
+		if (error)
+			WLog_Print(gfx->log, WLOG_ERROR,
+			           "context->SurfaceCommand failed with error %" PRIu32 "", error);
+	}
+
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT rdpgfx_recv_delete_encoding_context_pdu(GENERIC_CHANNEL_CALLBACK* callback, wStream* s)
+{
+	RDPGFX_DELETE_ENCODING_CONTEXT_PDU pdu = { 0 };
+	WINPR_ASSERT(callback);
+	RDPGFX_PLUGIN* gfx = (RDPGFX_PLUGIN*)callback->plugin;
+	WINPR_ASSERT(gfx);
+	RdpgfxClientContext* context = gfx->context;
+	UINT error = CHANNEL_RC_OK;
+
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, 6))
+		return ERROR_INVALID_DATA;
+
+	Stream_Read_UINT16(s, pdu.surfaceId);      /* surfaceId (2 bytes) */
+	Stream_Read_UINT32(s, pdu.codecContextId); /* codecContextId (4 bytes) */
+
+	DEBUG_RDPGFX(gfx->log,
+	             "RecvDeleteEncodingContextPdu: surfaceId: %" PRIu16 " codecContextId: %" PRIu32 "",
+	             pdu.surfaceId, pdu.codecContextId);
+
+	if (context)
+	{
+		IFCALLRET(context->DeleteEncodingContext, error, context, &pdu);
+
+		if (error)
+			WLog_Print(gfx->log, WLOG_ERROR,
+			           "context->DeleteEncodingContext failed with error %" PRIu32 "", error);
+	}
+
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT rdpgfx_recv_solid_fill_pdu(GENERIC_CHANNEL_CALLBACK* callback, wStream* s)
+{
+	RECTANGLE_16* fillRect = NULL;
+	RDPGFX_SOLID_FILL_PDU pdu = { 0 };
+	WINPR_ASSERT(callback);
+	RDPGFX_PLUGIN* gfx = (RDPGFX_PLUGIN*)callback->plugin;
+	WINPR_ASSERT(gfx);
+	RdpgfxClientContext* context = gfx->context;
+	UINT error = 0;
+
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, 8))
+		return ERROR_INVALID_DATA;
+
+	Stream_Read_UINT16(s, pdu.surfaceId); /* surfaceId (2 bytes) */
+
+	if ((error = rdpgfx_read_color32(s, &(pdu.fillPixel)))) /* fillPixel (4 bytes) */
+	{
+		WLog_Print(gfx->log, WLOG_ERROR, "rdpgfx_read_color32 failed with error %" PRIu32 "!",
+		           error);
+		return error;
+	}
+
+	Stream_Read_UINT16(s, pdu.fillRectCount); /* fillRectCount (2 bytes) */
+
+	if (!Stream_CheckAndLogRequiredLengthOfSize(TAG, s, pdu.fillRectCount, 8ull))
+		return ERROR_INVALID_DATA;
+
+	pdu.fillRects = (RECTANGLE_16*)calloc(pdu.fillRectCount, sizeof(RECTANGLE_16));
+
+	if (!pdu.fillRects)
+	{
+		WLog_Print(gfx->log, WLOG_ERROR, "calloc failed!");
+		return CHANNEL_RC_NO_MEMORY;
+	}
+
+	for (UINT16 index = 0; index < pdu.fillRectCount; index++)
+	{
+		fillRect = &(pdu.fillRects[index]);
+
+		if ((error = rdpgfx_read_rect16(s, fillRect)))
+		{
+			WLog_Print(gfx->log, WLOG_ERROR, "rdpgfx_read_rect16 failed with error %" PRIu32 "!",
+			           error);
+			free(pdu.fillRects);
+			return error;
+		}
+	}
+	DEBUG_RDPGFX(gfx->log, "RecvSolidFillPdu: surfaceId: %" PRIu16 " fillRectCount: %" PRIu16 "",
+	             pdu.surfaceId, pdu.fillRectCount);
+
+	if (context)
+	{
+		IFCALLRET(context->SolidFill, error, context, &pdu);
+
+		if (error)
+			WLog_Print(gfx->log, WLOG_ERROR, "context->SolidFill failed with error %" PRIu32 "",
+			           error);
+	}
+
+	free(pdu.fillRects);
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT rdpgfx_recv_surface_to_surface_pdu(GENERIC_CHANNEL_CALLBACK* callback, wStream* s)
+{
+	RDPGFX_POINT16* destPt = NULL;
+	RDPGFX_SURFACE_TO_SURFACE_PDU pdu = { 0 };
+	WINPR_ASSERT(callback);
+	RDPGFX_PLUGIN* gfx = (RDPGFX_PLUGIN*)callback->plugin;
+	WINPR_ASSERT(gfx);
+	RdpgfxClientContext* context = gfx->context;
+	UINT error = 0;
+
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, 14))
+		return ERROR_INVALID_DATA;
+
+	Stream_Read_UINT16(s, pdu.surfaceIdSrc);  /* surfaceIdSrc (2 bytes) */
+	Stream_Read_UINT16(s, pdu.surfaceIdDest); /* surfaceIdDest (2 bytes) */
+
+	if ((error = rdpgfx_read_rect16(s, &(pdu.rectSrc)))) /* rectSrc (8 bytes ) */
+	{
+		WLog_Print(gfx->log, WLOG_ERROR, "rdpgfx_read_rect16 failed with error %" PRIu32 "!",
+		           error);
+		return error;
+	}
+
+	Stream_Read_UINT16(s, pdu.destPtsCount); /* destPtsCount (2 bytes) */
+
+	if (!Stream_CheckAndLogRequiredLengthOfSize(TAG, s, pdu.destPtsCount, 4ull))
+		return ERROR_INVALID_DATA;
+
+	pdu.destPts = (RDPGFX_POINT16*)calloc(pdu.destPtsCount, sizeof(RDPGFX_POINT16));
+
+	if (!pdu.destPts)
+	{
+		WLog_Print(gfx->log, WLOG_ERROR, "calloc failed!");
+		return CHANNEL_RC_NO_MEMORY;
+	}
+
+	for (UINT16 index = 0; index < pdu.destPtsCount; index++)
+	{
+		destPt = &(pdu.destPts[index]);
+
+		if ((error = rdpgfx_read_point16(s, destPt)))
+		{
+			WLog_Print(gfx->log, WLOG_ERROR, "rdpgfx_read_point16 failed with error %" PRIu32 "!",
+			           error);
+			free(pdu.destPts);
+			return error;
+		}
+	}
+
+	DEBUG_RDPGFX(gfx->log,
+	             "RecvSurfaceToSurfacePdu: surfaceIdSrc: %" PRIu16 " surfaceIdDest: %" PRIu16 " "
+	             "left: %" PRIu16 " top: %" PRIu16 " right: %" PRIu16 " bottom: %" PRIu16
+	             " destPtsCount: %" PRIu16 "",
+	             pdu.surfaceIdSrc, pdu.surfaceIdDest, pdu.rectSrc.left, pdu.rectSrc.top,
+	             pdu.rectSrc.right, pdu.rectSrc.bottom, pdu.destPtsCount);
+
+	if (context)
+	{
+		IFCALLRET(context->SurfaceToSurface, error, context, &pdu);
+
+		if (error)
+			WLog_Print(gfx->log, WLOG_ERROR,
+			           "context->SurfaceToSurface failed with error %" PRIu32 "", error);
+	}
+
+	free(pdu.destPts);
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT rdpgfx_recv_surface_to_cache_pdu(GENERIC_CHANNEL_CALLBACK* callback, wStream* s)
+{
+	RDPGFX_SURFACE_TO_CACHE_PDU pdu = { 0 };
+	WINPR_ASSERT(callback);
+	RDPGFX_PLUGIN* gfx = (RDPGFX_PLUGIN*)callback->plugin;
+
+	WINPR_ASSERT(gfx);
+	RdpgfxClientContext* context = gfx->context;
+	UINT error = 0;
+
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, 20))
+		return ERROR_INVALID_DATA;
+
+	Stream_Read_UINT16(s, pdu.surfaceId); /* surfaceId (2 bytes) */
+	Stream_Read_UINT64(s, pdu.cacheKey);  /* cacheKey (8 bytes) */
+	Stream_Read_UINT16(s, pdu.cacheSlot); /* cacheSlot (2 bytes) */
+
+	if ((error = rdpgfx_read_rect16(s, &(pdu.rectSrc)))) /* rectSrc (8 bytes ) */
+	{
+		WLog_Print(gfx->log, WLOG_ERROR, "rdpgfx_read_rect16 failed with error %" PRIu32 "!",
+		           error);
+		return error;
+	}
+
+	DEBUG_RDPGFX(gfx->log,
+	             "RecvSurfaceToCachePdu: surfaceId: %" PRIu16 " cacheKey: 0x%016" PRIX64
+	             " cacheSlot: %" PRIu16 " "
+	             "left: %" PRIu16 " top: %" PRIu16 " right: %" PRIu16 " bottom: %" PRIu16 "",
+	             pdu.surfaceId, pdu.cacheKey, pdu.cacheSlot, pdu.rectSrc.left, pdu.rectSrc.top,
+	             pdu.rectSrc.right, pdu.rectSrc.bottom);
+
+	if (context)
+	{
+		IFCALLRET(context->SurfaceToCache, error, context, &pdu);
+
+		if (error)
+			WLog_Print(gfx->log, WLOG_ERROR,
+			           "context->SurfaceToCache failed with error %" PRIu32 "", error);
+	}
+
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT rdpgfx_recv_cache_to_surface_pdu(GENERIC_CHANNEL_CALLBACK* callback, wStream* s)
+{
+	RDPGFX_POINT16* destPt = NULL;
+	RDPGFX_CACHE_TO_SURFACE_PDU pdu = { 0 };
+	WINPR_ASSERT(callback);
+	RDPGFX_PLUGIN* gfx = (RDPGFX_PLUGIN*)callback->plugin;
+
+	WINPR_ASSERT(gfx);
+	RdpgfxClientContext* context = gfx->context;
+	UINT error = CHANNEL_RC_OK;
+
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, 6))
+		return ERROR_INVALID_DATA;
+
+	Stream_Read_UINT16(s, pdu.cacheSlot);    /* cacheSlot (2 bytes) */
+	Stream_Read_UINT16(s, pdu.surfaceId);    /* surfaceId (2 bytes) */
+	Stream_Read_UINT16(s, pdu.destPtsCount); /* destPtsCount (2 bytes) */
+
+	if (!Stream_CheckAndLogRequiredLengthOfSize(TAG, s, pdu.destPtsCount, 4ull))
+		return ERROR_INVALID_DATA;
+
+	pdu.destPts = (RDPGFX_POINT16*)calloc(pdu.destPtsCount, sizeof(RDPGFX_POINT16));
+
+	if (!pdu.destPts)
+	{
+		WLog_Print(gfx->log, WLOG_ERROR, "calloc failed!");
+		return CHANNEL_RC_NO_MEMORY;
+	}
+
+	for (UINT16 index = 0; index < pdu.destPtsCount; index++)
+	{
+		destPt = &(pdu.destPts[index]);
+
+		if ((error = rdpgfx_read_point16(s, destPt)))
+		{
+			WLog_Print(gfx->log, WLOG_ERROR, "rdpgfx_read_point16 failed with error %" PRIu32 "",
+			           error);
+			free(pdu.destPts);
+			return error;
+		}
+	}
+
+	DEBUG_RDPGFX(gfx->log,
+	             "RdpGfxRecvCacheToSurfacePdu: cacheSlot: %" PRIu16 " surfaceId: %" PRIu16
+	             " destPtsCount: %" PRIu16 "",
+	             pdu.cacheSlot, pdu.surfaceId, pdu.destPtsCount);
+
+	if (context)
+	{
+		IFCALLRET(context->CacheToSurface, error, context, &pdu);
+
+		if (error)
+			WLog_Print(gfx->log, WLOG_ERROR,
+			           "context->CacheToSurface failed with error %" PRIu32 "", error);
+	}
+
+	free(pdu.destPts);
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT rdpgfx_recv_map_surface_to_output_pdu(GENERIC_CHANNEL_CALLBACK* callback, wStream* s)
+{
+	RDPGFX_MAP_SURFACE_TO_OUTPUT_PDU pdu = { 0 };
+	WINPR_ASSERT(callback);
+	RDPGFX_PLUGIN* gfx = (RDPGFX_PLUGIN*)callback->plugin;
+
+	WINPR_ASSERT(gfx);
+	RdpgfxClientContext* context = gfx->context;
+	UINT error = CHANNEL_RC_OK;
+
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, 12))
+		return ERROR_INVALID_DATA;
+
+	Stream_Read_UINT16(s, pdu.surfaceId);     /* surfaceId (2 bytes) */
+	Stream_Read_UINT16(s, pdu.reserved);      /* reserved (2 bytes) */
+	Stream_Read_UINT32(s, pdu.outputOriginX); /* outputOriginX (4 bytes) */
+	Stream_Read_UINT32(s, pdu.outputOriginY); /* outputOriginY (4 bytes) */
+	DEBUG_RDPGFX(gfx->log,
+	             "RecvMapSurfaceToOutputPdu: surfaceId: %" PRIu16 " outputOriginX: %" PRIu32
+	             " outputOriginY: %" PRIu32 "",
+	             pdu.surfaceId, pdu.outputOriginX, pdu.outputOriginY);
+
+	if (context)
+	{
+		IFCALLRET(context->MapSurfaceToOutput, error, context, &pdu);
+
+		if (error)
+			WLog_Print(gfx->log, WLOG_ERROR,
+			           "context->MapSurfaceToOutput failed with error %" PRIu32 "", error);
+	}
+
+	return error;
+}
+
+static UINT rdpgfx_recv_map_surface_to_scaled_output_pdu(GENERIC_CHANNEL_CALLBACK* callback,
+                                                         wStream* s)
+{
+	RDPGFX_MAP_SURFACE_TO_SCALED_OUTPUT_PDU pdu = { 0 };
+	WINPR_ASSERT(callback);
+	RDPGFX_PLUGIN* gfx = (RDPGFX_PLUGIN*)callback->plugin;
+
+	WINPR_ASSERT(gfx);
+	RdpgfxClientContext* context = gfx->context;
+	UINT error = CHANNEL_RC_OK;
+
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, 20))
+		return ERROR_INVALID_DATA;
+
+	Stream_Read_UINT16(s, pdu.surfaceId);     /* surfaceId (2 bytes) */
+	Stream_Read_UINT16(s, pdu.reserved);      /* reserved (2 bytes) */
+	Stream_Read_UINT32(s, pdu.outputOriginX); /* outputOriginX (4 bytes) */
+	Stream_Read_UINT32(s, pdu.outputOriginY); /* outputOriginY (4 bytes) */
+	Stream_Read_UINT32(s, pdu.targetWidth);   /* targetWidth (4 bytes) */
+	Stream_Read_UINT32(s, pdu.targetHeight);  /* targetHeight (4 bytes) */
+	DEBUG_RDPGFX(gfx->log,
+	             "RecvMapSurfaceToScaledOutputPdu: surfaceId: %" PRIu16 " outputOriginX: %" PRIu32
+	             " outputOriginY: %" PRIu32 " targetWidth: %" PRIu32 " targetHeight: %" PRIu32,
+	             pdu.surfaceId, pdu.outputOriginX, pdu.outputOriginY, pdu.targetWidth,
+	             pdu.targetHeight);
+
+	if (context)
+	{
+		IFCALLRET(context->MapSurfaceToScaledOutput, error, context, &pdu);
+
+		if (error)
+			WLog_Print(gfx->log, WLOG_ERROR,
+			           "context->MapSurfaceToScaledOutput failed with error %" PRIu32 "", error);
+	}
+
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT rdpgfx_recv_map_surface_to_window_pdu(GENERIC_CHANNEL_CALLBACK* callback, wStream* s)
+{
+	RDPGFX_MAP_SURFACE_TO_WINDOW_PDU pdu = { 0 };
+	WINPR_ASSERT(callback);
+	RDPGFX_PLUGIN* gfx = (RDPGFX_PLUGIN*)callback->plugin;
+
+	WINPR_ASSERT(gfx);
+	RdpgfxClientContext* context = gfx->context;
+	UINT error = CHANNEL_RC_OK;
+
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, 18))
+		return ERROR_INVALID_DATA;
+
+	Stream_Read_UINT16(s, pdu.surfaceId);    /* surfaceId (2 bytes) */
+	Stream_Read_UINT64(s, pdu.windowId);     /* windowId (8 bytes) */
+	Stream_Read_UINT32(s, pdu.mappedWidth);  /* mappedWidth (4 bytes) */
+	Stream_Read_UINT32(s, pdu.mappedHeight); /* mappedHeight (4 bytes) */
+	DEBUG_RDPGFX(gfx->log,
+	             "RecvMapSurfaceToWindowPdu: surfaceId: %" PRIu16 " windowId: 0x%016" PRIX64
+	             " mappedWidth: %" PRIu32 " mappedHeight: %" PRIu32 "",
+	             pdu.surfaceId, pdu.windowId, pdu.mappedWidth, pdu.mappedHeight);
+
+	if (context && context->MapSurfaceToWindow)
+	{
+		IFCALLRET(context->MapSurfaceToWindow, error, context, &pdu);
+
+		if (error)
+			WLog_Print(gfx->log, WLOG_ERROR,
+			           "context->MapSurfaceToWindow failed with error %" PRIu32 "", error);
+	}
+
+	return error;
+}
+
+static UINT rdpgfx_recv_map_surface_to_scaled_window_pdu(GENERIC_CHANNEL_CALLBACK* callback,
+                                                         wStream* s)
+{
+	RDPGFX_MAP_SURFACE_TO_SCALED_WINDOW_PDU pdu = { 0 };
+	WINPR_ASSERT(callback);
+	RDPGFX_PLUGIN* gfx = (RDPGFX_PLUGIN*)callback->plugin;
+	WINPR_ASSERT(gfx);
+	RdpgfxClientContext* context = gfx->context;
+	UINT error = CHANNEL_RC_OK;
+
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, 26))
+		return ERROR_INVALID_DATA;
+
+	Stream_Read_UINT16(s, pdu.surfaceId);    /* surfaceId (2 bytes) */
+	Stream_Read_UINT64(s, pdu.windowId);     /* windowId (8 bytes) */
+	Stream_Read_UINT32(s, pdu.mappedWidth);  /* mappedWidth (4 bytes) */
+	Stream_Read_UINT32(s, pdu.mappedHeight); /* mappedHeight (4 bytes) */
+	Stream_Read_UINT32(s, pdu.targetWidth);  /* targetWidth (4 bytes) */
+	Stream_Read_UINT32(s, pdu.targetHeight); /* targetHeight (4 bytes) */
+	DEBUG_RDPGFX(gfx->log,
+	             "RecvMapSurfaceToScaledWindowPdu: surfaceId: %" PRIu16 " windowId: 0x%016" PRIX64
+	             " mappedWidth: %" PRIu32 " mappedHeight: %" PRIu32 " targetWidth: %" PRIu32
+	             " targetHeight: %" PRIu32 "",
+	             pdu.surfaceId, pdu.windowId, pdu.mappedWidth, pdu.mappedHeight, pdu.targetWidth,
+	             pdu.targetHeight);
+
+	if (context && context->MapSurfaceToScaledWindow)
+	{
+		IFCALLRET(context->MapSurfaceToScaledWindow, error, context, &pdu);
+
+		if (error)
+			WLog_Print(gfx->log, WLOG_ERROR,
+			           "context->MapSurfaceToScaledWindow failed with error %" PRIu32 "", error);
+	}
+
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT rdpgfx_recv_pdu(GENERIC_CHANNEL_CALLBACK* callback, wStream* s)
+{
+	size_t end = 0;
+	RDPGFX_HEADER header = { 0 };
+	UINT error = 0;
+	WINPR_ASSERT(callback);
+	RDPGFX_PLUGIN* gfx = (RDPGFX_PLUGIN*)callback->plugin;
+	const size_t beg = Stream_GetPosition(s);
+
+	WINPR_ASSERT(gfx);
+	if ((error = rdpgfx_read_header(s, &header)))
+	{
+		WLog_Print(gfx->log, WLOG_ERROR, "rdpgfx_read_header failed with error %" PRIu32 "!",
+		           error);
+		return error;
+	}
+
+	DEBUG_RDPGFX(
+	    gfx->log, "cmdId: %s (0x%04" PRIX16 ") flags: 0x%04" PRIX16 " pduLength: %" PRIu32 "",
+	    rdpgfx_get_cmd_id_string(header.cmdId), header.cmdId, header.flags, header.pduLength);
+
+	switch (header.cmdId)
+	{
+		case RDPGFX_CMDID_WIRETOSURFACE_1:
+			if ((error = rdpgfx_recv_wire_to_surface_1_pdu(callback, s)))
+				WLog_Print(gfx->log, WLOG_ERROR,
+				           "rdpgfx_recv_wire_to_surface_1_pdu failed with error %" PRIu32 "!",
+				           error);
+
+			break;
+
+		case RDPGFX_CMDID_WIRETOSURFACE_2:
+			if ((error = rdpgfx_recv_wire_to_surface_2_pdu(callback, s)))
+				WLog_Print(gfx->log, WLOG_ERROR,
+				           "rdpgfx_recv_wire_to_surface_2_pdu failed with error %" PRIu32 "!",
+				           error);
+
+			break;
+
+		case RDPGFX_CMDID_DELETEENCODINGCONTEXT:
+			if ((error = rdpgfx_recv_delete_encoding_context_pdu(callback, s)))
+				WLog_Print(gfx->log, WLOG_ERROR,
+				           "rdpgfx_recv_delete_encoding_context_pdu failed with error %" PRIu32 "!",
+				           error);
+
+			break;
+
+		case RDPGFX_CMDID_SOLIDFILL:
+			if ((error = rdpgfx_recv_solid_fill_pdu(callback, s)))
+				WLog_Print(gfx->log, WLOG_ERROR,
+				           "rdpgfx_recv_solid_fill_pdu failed with error %" PRIu32 "!", error);
+
+			break;
+
+		case RDPGFX_CMDID_SURFACETOSURFACE:
+			if ((error = rdpgfx_recv_surface_to_surface_pdu(callback, s)))
+				WLog_Print(gfx->log, WLOG_ERROR,
+				           "rdpgfx_recv_surface_to_surface_pdu failed with error %" PRIu32 "!",
+				           error);
+
+			break;
+
+		case RDPGFX_CMDID_SURFACETOCACHE:
+			if ((error = rdpgfx_recv_surface_to_cache_pdu(callback, s)))
+				WLog_Print(gfx->log, WLOG_ERROR,
+				           "rdpgfx_recv_surface_to_cache_pdu failed with error %" PRIu32 "!",
+				           error);
+
+			break;
+
+		case RDPGFX_CMDID_CACHETOSURFACE:
+			if ((error = rdpgfx_recv_cache_to_surface_pdu(callback, s)))
+				WLog_Print(gfx->log, WLOG_ERROR,
+				           "rdpgfx_recv_cache_to_surface_pdu failed with error %" PRIu32 "!",
+				           error);
+
+			break;
+
+		case RDPGFX_CMDID_EVICTCACHEENTRY:
+			if ((error = rdpgfx_recv_evict_cache_entry_pdu(callback, s)))
+				WLog_Print(gfx->log, WLOG_ERROR,
+				           "rdpgfx_recv_evict_cache_entry_pdu failed with error %" PRIu32 "!",
+				           error);
+
+			break;
+
+		case RDPGFX_CMDID_CREATESURFACE:
+			if ((error = rdpgfx_recv_create_surface_pdu(callback, s)))
+				WLog_Print(gfx->log, WLOG_ERROR,
+				           "rdpgfx_recv_create_surface_pdu failed with error %" PRIu32 "!", error);
+
+			break;
+
+		case RDPGFX_CMDID_DELETESURFACE:
+			if ((error = rdpgfx_recv_delete_surface_pdu(callback, s)))
+				WLog_Print(gfx->log, WLOG_ERROR,
+				           "rdpgfx_recv_delete_surface_pdu failed with error %" PRIu32 "!", error);
+
+			break;
+
+		case RDPGFX_CMDID_STARTFRAME:
+			if ((error = rdpgfx_recv_start_frame_pdu(callback, s)))
+				WLog_Print(gfx->log, WLOG_ERROR,
+				           "rdpgfx_recv_start_frame_pdu failed with error %" PRIu32 "!", error);
+
+			break;
+
+		case RDPGFX_CMDID_ENDFRAME:
+			if ((error = rdpgfx_recv_end_frame_pdu(callback, s)))
+				WLog_Print(gfx->log, WLOG_ERROR,
+				           "rdpgfx_recv_end_frame_pdu failed with error %" PRIu32 "!", error);
+
+			break;
+
+		case RDPGFX_CMDID_RESETGRAPHICS:
+			if ((error = rdpgfx_recv_reset_graphics_pdu(callback, s)))
+				WLog_Print(gfx->log, WLOG_ERROR,
+				           "rdpgfx_recv_reset_graphics_pdu failed with error %" PRIu32 "!", error);
+
+			break;
+
+		case RDPGFX_CMDID_MAPSURFACETOOUTPUT:
+			if ((error = rdpgfx_recv_map_surface_to_output_pdu(callback, s)))
+				WLog_Print(gfx->log, WLOG_ERROR,
+				           "rdpgfx_recv_map_surface_to_output_pdu failed with error %" PRIu32 "!",
+				           error);
+
+			break;
+
+		case RDPGFX_CMDID_CACHEIMPORTREPLY:
+			if ((error = rdpgfx_recv_cache_import_reply_pdu(callback, s)))
+				WLog_Print(gfx->log, WLOG_ERROR,
+				           "rdpgfx_recv_cache_import_reply_pdu failed with error %" PRIu32 "!",
+				           error);
+
+			break;
+
+		case RDPGFX_CMDID_CAPSCONFIRM:
+			if ((error = rdpgfx_recv_caps_confirm_pdu(callback, s)))
+				WLog_Print(gfx->log, WLOG_ERROR,
+				           "rdpgfx_recv_caps_confirm_pdu failed with error %" PRIu32 "!", error);
+
+			if ((error = rdpgfx_send_cache_offer(gfx)))
+				WLog_Print(gfx->log, WLOG_ERROR,
+				           "rdpgfx_send_cache_offer failed with error %" PRIu32 "!", error);
+
+			break;
+
+		case RDPGFX_CMDID_MAPSURFACETOWINDOW:
+			if ((error = rdpgfx_recv_map_surface_to_window_pdu(callback, s)))
+				WLog_Print(gfx->log, WLOG_ERROR,
+				           "rdpgfx_recv_map_surface_to_window_pdu failed with error %" PRIu32 "!",
+				           error);
+
+			break;
+
+		case RDPGFX_CMDID_MAPSURFACETOSCALEDWINDOW:
+			if ((error = rdpgfx_recv_map_surface_to_scaled_window_pdu(callback, s)))
+				WLog_Print(gfx->log, WLOG_ERROR,
+				           "rdpgfx_recv_map_surface_to_scaled_window_pdu failed with error %" PRIu32
+				           "!",
+				           error);
+
+			break;
+
+		case RDPGFX_CMDID_MAPSURFACETOSCALEDOUTPUT:
+			if ((error = rdpgfx_recv_map_surface_to_scaled_output_pdu(callback, s)))
+				WLog_Print(gfx->log, WLOG_ERROR,
+				           "rdpgfx_recv_map_surface_to_scaled_output_pdu failed with error %" PRIu32
+				           "!",
+				           error);
+
+			break;
+
+		default:
+			error = CHANNEL_RC_BAD_PROC;
+			break;
+	}
+
+	if (error)
+	{
+		WLog_Print(gfx->log, WLOG_ERROR, "Error while processing GFX cmdId: %s (0x%04" PRIX16 ")",
+		           rdpgfx_get_cmd_id_string(header.cmdId), header.cmdId);
+		Stream_SetPosition(s, (beg + header.pduLength));
+		return error;
+	}
+
+	end = Stream_GetPosition(s);
+
+	if (end != (beg + header.pduLength))
+	{
+		WLog_Print(gfx->log, WLOG_ERROR,
+		           "Unexpected gfx pdu end: Actual: %" PRIuz ", Expected: %" PRIuz, end,
+		           (beg + header.pduLength));
+		Stream_SetPosition(s, (beg + header.pduLength));
+	}
+
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT rdpgfx_on_data_received(IWTSVirtualChannelCallback* pChannelCallback, wStream* data)
+{
+	wStream* s = NULL;
+	int status = 0;
+	UINT32 DstSize = 0;
+	BYTE* pDstData = NULL;
+	GENERIC_CHANNEL_CALLBACK* callback = (GENERIC_CHANNEL_CALLBACK*)pChannelCallback;
+	WINPR_ASSERT(callback);
+	RDPGFX_PLUGIN* gfx = (RDPGFX_PLUGIN*)callback->plugin;
+	UINT error = CHANNEL_RC_OK;
+
+	WINPR_ASSERT(gfx);
+	status = zgfx_decompress(gfx->zgfx, Stream_ConstPointer(data),
+	                         (UINT32)Stream_GetRemainingLength(data), &pDstData, &DstSize, 0);
+
+	if (status < 0)
+	{
+		WLog_Print(gfx->log, WLOG_ERROR, "zgfx_decompress failure! status: %d", status);
+		return ERROR_INTERNAL_ERROR;
+	}
+
+	s = Stream_New(pDstData, DstSize);
+
+	if (!s)
+	{
+		WLog_Print(gfx->log, WLOG_ERROR, "calloc failed!");
+		return CHANNEL_RC_NO_MEMORY;
+	}
+
+	while (Stream_GetPosition(s) < Stream_Length(s))
+	{
+		if ((error = rdpgfx_recv_pdu(callback, s)))
+		{
+			WLog_Print(gfx->log, WLOG_ERROR, "rdpgfx_recv_pdu failed with error %" PRIu32 "!",
+			           error);
+			break;
+		}
+	}
+
+	Stream_Free(s, TRUE);
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT rdpgfx_on_open(IWTSVirtualChannelCallback* pChannelCallback)
+{
+	GENERIC_CHANNEL_CALLBACK* callback = (GENERIC_CHANNEL_CALLBACK*)pChannelCallback;
+	WINPR_ASSERT(callback);
+	RDPGFX_PLUGIN* gfx = (RDPGFX_PLUGIN*)callback->plugin;
+	WINPR_ASSERT(gfx);
+	RdpgfxClientContext* context = gfx->context;
+	UINT error = CHANNEL_RC_OK;
+	BOOL do_caps_advertise = TRUE;
+	gfx->sendFrameAcks = TRUE;
+
+	if (context)
+	{
+		IFCALLRET(context->OnOpen, error, context, &do_caps_advertise, &gfx->sendFrameAcks);
+
+		if (error)
+			WLog_Print(gfx->log, WLOG_ERROR, "context->OnOpen failed with error %" PRIu32 "",
+			           error);
+	}
+
+	if (do_caps_advertise)
+		error = rdpgfx_send_supported_caps(callback);
+
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT rdpgfx_on_close(IWTSVirtualChannelCallback* pChannelCallback)
+{
+	UINT error = CHANNEL_RC_OK;
+	GENERIC_CHANNEL_CALLBACK* callback = (GENERIC_CHANNEL_CALLBACK*)pChannelCallback;
+	WINPR_ASSERT(callback);
+	RDPGFX_PLUGIN* gfx = (RDPGFX_PLUGIN*)callback->plugin;
+
+	if (!gfx)
+		goto fail;
+
+	RdpgfxClientContext* context = gfx->context;
+
+	DEBUG_RDPGFX(gfx->log, "OnClose");
+	error = rdpgfx_save_persistent_cache(gfx);
+
+	if (error)
+	{
+		// print error, but don't consider this a hard failure
+		WLog_Print(gfx->log, WLOG_ERROR,
+		           "rdpgfx_save_persistent_cache failed with error %" PRIu32 "", error);
+	}
+
+	free_surfaces(context, gfx->SurfaceTable);
+	evict_cache_slots(context, gfx->MaxCacheSlots, gfx->CacheSlots);
+
+	free(callback);
+	gfx->UnacknowledgedFrames = 0;
+	gfx->TotalDecodedFrames = 0;
+
+	if (context)
+	{
+		IFCALL(context->OnClose, context);
+	}
+
+fail:
+	return CHANNEL_RC_OK;
+}
+
+static void terminate_plugin_cb(GENERIC_DYNVC_PLUGIN* base)
+{
+	RDPGFX_PLUGIN* gfx = (RDPGFX_PLUGIN*)base;
+	WINPR_ASSERT(gfx);
+	RdpgfxClientContext* context = gfx->context;
+
+	DEBUG_RDPGFX(gfx->log, "Terminated");
+	rdpgfx_client_context_free(context);
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT rdpgfx_set_surface_data(RdpgfxClientContext* context, UINT16 surfaceId, void* pData)
+{
+	ULONG_PTR key = 0;
+	WINPR_ASSERT(context);
+	RDPGFX_PLUGIN* gfx = (RDPGFX_PLUGIN*)context->handle;
+	WINPR_ASSERT(gfx);
+	key = ((ULONG_PTR)surfaceId) + 1;
+
+	if (pData)
+	{
+		if (!HashTable_Insert(gfx->SurfaceTable, (void*)key, pData))
+			return ERROR_BAD_ARGUMENTS;
+	}
+	else
+		HashTable_Remove(gfx->SurfaceTable, (void*)key);
+
+	return CHANNEL_RC_OK;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT rdpgfx_get_surface_ids(RdpgfxClientContext* context, UINT16** ppSurfaceIds,
+                                   UINT16* count_out)
+{
+	size_t count = 0;
+	UINT16* pSurfaceIds = NULL;
+	ULONG_PTR* pKeys = NULL;
+	WINPR_ASSERT(context);
+	RDPGFX_PLUGIN* gfx = (RDPGFX_PLUGIN*)context->handle;
+	WINPR_ASSERT(gfx);
+	count = HashTable_GetKeys(gfx->SurfaceTable, &pKeys);
+
+	WINPR_ASSERT(ppSurfaceIds);
+	WINPR_ASSERT(count_out);
+	if (count < 1)
+	{
+		*count_out = 0;
+		return CHANNEL_RC_OK;
+	}
+
+	pSurfaceIds = (UINT16*)calloc(count, sizeof(UINT16));
+
+	if (!pSurfaceIds)
+	{
+		WLog_Print(gfx->log, WLOG_ERROR, "calloc failed!");
+		free(pKeys);
+		return CHANNEL_RC_NO_MEMORY;
+	}
+
+	for (size_t index = 0; index < count; index++)
+	{
+		pSurfaceIds[index] = (UINT16)(pKeys[index] - 1);
+	}
+
+	free(pKeys);
+	*ppSurfaceIds = pSurfaceIds;
+	*count_out = (UINT16)count;
+	return CHANNEL_RC_OK;
+}
+
+static void* rdpgfx_get_surface_data(RdpgfxClientContext* context, UINT16 surfaceId)
+{
+	ULONG_PTR key = 0;
+	void* pData = NULL;
+	WINPR_ASSERT(context);
+	RDPGFX_PLUGIN* gfx = (RDPGFX_PLUGIN*)context->handle;
+	WINPR_ASSERT(gfx);
+	key = ((ULONG_PTR)surfaceId) + 1;
+	pData = HashTable_GetItemValue(gfx->SurfaceTable, (void*)key);
+	return pData;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT rdpgfx_set_cache_slot_data(RdpgfxClientContext* context, UINT16 cacheSlot, void* pData)
+{
+	WINPR_ASSERT(context);
+	RDPGFX_PLUGIN* gfx = (RDPGFX_PLUGIN*)context->handle;
+
+	WINPR_ASSERT(gfx);
+	/* Microsoft uses 1-based indexing for the egfx bitmap cache ! */
+	if (cacheSlot == 0 || cacheSlot > gfx->MaxCacheSlots)
+	{
+		WLog_ERR(TAG, "invalid cache slot %" PRIu16 ", must be between 1 and %" PRIu16 "",
+		         cacheSlot, gfx->MaxCacheSlots);
+		return ERROR_INVALID_INDEX;
+	}
+
+	gfx->CacheSlots[cacheSlot - 1] = pData;
+	return CHANNEL_RC_OK;
+}
+
+static void* rdpgfx_get_cache_slot_data(RdpgfxClientContext* context, UINT16 cacheSlot)
+{
+	void* pData = NULL;
+	WINPR_ASSERT(context);
+	RDPGFX_PLUGIN* gfx = (RDPGFX_PLUGIN*)context->handle;
+	WINPR_ASSERT(gfx);
+	/* Microsoft uses 1-based indexing for the egfx bitmap cache ! */
+	if (cacheSlot == 0 || cacheSlot > gfx->MaxCacheSlots)
+	{
+		WLog_ERR(TAG, "invalid cache slot %" PRIu16 ", must be between 1 and %" PRIu16 "",
+		         cacheSlot, gfx->MaxCacheSlots);
+		return NULL;
+	}
+
+	pData = gfx->CacheSlots[cacheSlot - 1];
+	return pData;
+}
+
+static UINT init_plugin_cb(GENERIC_DYNVC_PLUGIN* base, rdpContext* rcontext, rdpSettings* settings)
+{
+	RdpgfxClientContext* context = NULL;
+	RDPGFX_PLUGIN* gfx = (RDPGFX_PLUGIN*)base;
+
+	WINPR_ASSERT(base);
+	gfx->rdpcontext = rcontext;
+	gfx->log = WLog_Get(TAG);
+
+	gfx->SurfaceTable = HashTable_New(TRUE);
+	if (!gfx->SurfaceTable)
+	{
+		WLog_ERR(TAG, "HashTable_New for surfaces failed !");
+		return CHANNEL_RC_NO_MEMORY;
+	}
+
+	gfx->MaxCacheSlots =
+	    freerdp_settings_get_bool(gfx->rdpcontext->settings, FreeRDP_GfxSmallCache) ? 4096 : 25600;
+
+	context = (RdpgfxClientContext*)calloc(1, sizeof(RdpgfxClientContext));
+	if (!context)
+	{
+		WLog_ERR(TAG, "context calloc failed!");
+		HashTable_Free(gfx->SurfaceTable);
+		gfx->SurfaceTable = NULL;
+		return CHANNEL_RC_NO_MEMORY;
+	}
+
+	gfx->zgfx = zgfx_context_new(FALSE);
+	if (!gfx->zgfx)
+	{
+		WLog_ERR(TAG, "zgfx_context_new failed!");
+		HashTable_Free(gfx->SurfaceTable);
+		gfx->SurfaceTable = NULL;
+		free(context);
+		return CHANNEL_RC_NO_MEMORY;
+	}
+
+	context->handle = (void*)gfx;
+	context->GetSurfaceIds = rdpgfx_get_surface_ids;
+	context->SetSurfaceData = rdpgfx_set_surface_data;
+	context->GetSurfaceData = rdpgfx_get_surface_data;
+	context->SetCacheSlotData = rdpgfx_set_cache_slot_data;
+	context->GetCacheSlotData = rdpgfx_get_cache_slot_data;
+	context->CapsAdvertise = rdpgfx_send_caps_advertise_pdu;
+	context->FrameAcknowledge = rdpgfx_send_frame_acknowledge_pdu;
+	context->CacheImportOffer = rdpgfx_send_cache_import_offer_pdu;
+	context->QoeFrameAcknowledge = rdpgfx_send_qoe_frame_acknowledge_pdu;
+
+	gfx->base.iface.pInterface = (void*)context;
+	gfx->context = context;
+	return CHANNEL_RC_OK;
+}
+
+void rdpgfx_client_context_free(RdpgfxClientContext* context)
+{
+
+	RDPGFX_PLUGIN* gfx = NULL;
+
+	if (!context)
+		return;
+
+	gfx = (RDPGFX_PLUGIN*)context->handle;
+
+	free_surfaces(context, gfx->SurfaceTable);
+	evict_cache_slots(context, gfx->MaxCacheSlots, gfx->CacheSlots);
+
+	if (gfx->zgfx)
+	{
+		zgfx_context_free(gfx->zgfx);
+		gfx->zgfx = NULL;
+	}
+
+	HashTable_Free(gfx->SurfaceTable);
+	free(context);
+}
+
+static const IWTSVirtualChannelCallback rdpgfx_callbacks = { rdpgfx_on_data_received,
+	                                                         rdpgfx_on_open, rdpgfx_on_close,
+	                                                         NULL };
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+FREERDP_ENTRY_POINT(UINT rdpgfx_DVCPluginEntry(IDRDYNVC_ENTRY_POINTS* pEntryPoints))
+{
+	return freerdp_generic_DVCPluginEntry(pEntryPoints, TAG, RDPGFX_DVC_CHANNEL_NAME,
+	                                      sizeof(RDPGFX_PLUGIN), sizeof(GENERIC_CHANNEL_CALLBACK),
+	                                      &rdpgfx_callbacks, init_plugin_cb, terminate_plugin_cb);
+}