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/**
* FreeRDP: A Remote Desktop Protocol Implementation
*
* Copyright 2014 Marc-Andre Moreau <marcandre.moreau@gmail.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/crt.h>
#include <winpr/print.h>
#include <freerdp/log.h>
#include "shadow_surface.h"
#include "shadow_capture.h"
#define TAG SERVER_TAG("shadow")
int shadow_capture_align_clip_rect(RECTANGLE_16* rect, RECTANGLE_16* clip)
{
int dx = 0;
int dy = 0;
dx = (rect->left % 16);
if (dx != 0)
{
rect->left -= dx;
rect->right += dx;
}
dx = (rect->right % 16);
if (dx != 0)
{
rect->right += (16 - dx);
}
dy = (rect->top % 16);
if (dy != 0)
{
rect->top -= dy;
rect->bottom += dy;
}
dy = (rect->bottom % 16);
if (dy != 0)
{
rect->bottom += (16 - dy);
}
if (rect->left < clip->left)
rect->left = clip->left;
if (rect->top < clip->top)
rect->top = clip->top;
if (rect->right > clip->right)
rect->right = clip->right;
if (rect->bottom > clip->bottom)
rect->bottom = clip->bottom;
return 1;
}
int shadow_capture_compare(BYTE* pData1, UINT32 nStep1, UINT32 nWidth, UINT32 nHeight, BYTE* pData2,
UINT32 nStep2, RECTANGLE_16* rect)
{
BOOL equal = 0;
BOOL allEqual = 0;
UINT32 tw = 0;
UINT32 th = 0;
UINT32 nrow = 0;
UINT32 ncol = 0;
UINT32 l = 0;
UINT32 t = 0;
UINT32 r = 0;
UINT32 b = 0;
BYTE* p1 = NULL;
BYTE* p2 = NULL;
BOOL rows[1024];
#ifdef WITH_DEBUG_SHADOW_CAPTURE
BOOL cols[1024] = { FALSE };
#endif
allEqual = TRUE;
ZeroMemory(rect, sizeof(RECTANGLE_16));
FillMemory(rows, sizeof(rows), 0xFF);
#ifdef WITH_DEBUG_SHADOW_CAPTURE
FillMemory(cols, sizeof(cols), 0xFF);
#endif
nrow = (nHeight + 15) / 16;
ncol = (nWidth + 15) / 16;
l = ncol + 1;
r = 0;
t = nrow + 1;
b = 0;
for (UINT32 ty = 0; ty < nrow; ty++)
{
th = ((ty + 1) == nrow) ? (nHeight % 16) : 16;
if (!th)
th = 16;
for (UINT32 tx = 0; tx < ncol; tx++)
{
equal = TRUE;
tw = ((tx + 1) == ncol) ? (nWidth % 16) : 16;
if (!tw)
tw = 16;
p1 = &pData1[(ty * 16 * nStep1) + (tx * 16 * 4)];
p2 = &pData2[(ty * 16 * nStep2) + (tx * 16 * 4)];
for (UINT32 k = 0; k < th; k++)
{
if (memcmp(p1, p2, tw * 4) != 0)
{
equal = FALSE;
break;
}
p1 += nStep1;
p2 += nStep2;
}
if (!equal)
{
rows[ty] = FALSE;
#ifdef WITH_DEBUG_SHADOW_CAPTURE
cols[tx] = FALSE;
#endif
if (l > tx)
l = tx;
if (r < tx)
r = tx;
}
}
if (!rows[ty])
{
allEqual = FALSE;
if (t > ty)
t = ty;
if (b < ty)
b = ty;
}
}
if (allEqual)
return 0;
WINPR_ASSERT(l * 16 <= UINT16_MAX);
WINPR_ASSERT(t * 16 <= UINT16_MAX);
WINPR_ASSERT((r + 1) * 16 <= UINT16_MAX);
WINPR_ASSERT((b + 1) * 16 <= UINT16_MAX);
rect->left = (UINT16)l * 16;
rect->top = (UINT16)t * 16;
rect->right = (UINT16)(r + 1) * 16;
rect->bottom = (UINT16)(b + 1) * 16;
WINPR_ASSERT(nWidth <= UINT16_MAX);
if (rect->right > nWidth)
rect->right = (UINT16)nWidth;
WINPR_ASSERT(nHeight <= UINT16_MAX);
if (rect->bottom > nHeight)
rect->bottom = (UINT16)nHeight;
#ifdef WITH_DEBUG_SHADOW_CAPTURE
size_t size = ncol + 1;
char* col_str = calloc(size, sizeof(char));
if (!col_str)
{
WLog_ERR(TAG, "calloc failed!");
return 1;
}
for (UINT32 tx = 0; tx < ncol; tx++)
sprintf_s(&col_str[tx], size - tx, "-");
WLog_INFO(TAG, "%s", col_str);
for (UINT32 tx = 0; tx < ncol; tx++)
sprintf_s(&col_str[tx], size - tx, "%c", cols[tx] ? 'O' : 'X');
WLog_INFO(TAG, "%s", col_str);
for (UINT32 tx = 0; tx < ncol; tx++)
sprintf_s(&col_str[tx], size - tx, "-");
WLog_INFO(TAG, "%s", col_str);
for (UINT32 ty = 0; ty < nrow; ty++)
{
for (UINT32 tx = 0; tx < ncol; tx++)
sprintf_s(&col_str[tx], size - tx, "%c", cols[tx] ? 'O' : 'X');
WLog_INFO(TAG, "%s", col_str);
WLog_INFO(TAG, "|%s|", rows[ty] ? "O" : "X");
}
WLog_INFO(TAG,
"left: %" PRIu32 " top: %" PRIu32 " right: %" PRIu32 " bottom: %" PRIu32
" ncol: %" PRIu32 " nrow: %" PRIu32,
l, t, r, b, ncol, nrow);
free(col_str);
#endif
return 1;
}
rdpShadowCapture* shadow_capture_new(rdpShadowServer* server)
{
WINPR_ASSERT(server);
rdpShadowCapture* capture = (rdpShadowCapture*)calloc(1, sizeof(rdpShadowCapture));
if (!capture)
return NULL;
capture->server = server;
if (!InitializeCriticalSectionAndSpinCount(&(capture->lock), 4000))
{
WINPR_PRAGMA_DIAG_PUSH
WINPR_PRAGMA_DIAG_IGNORED_MISMATCHED_DEALLOC
shadow_capture_free(capture);
WINPR_PRAGMA_DIAG_POP
return NULL;
}
return capture;
}
void shadow_capture_free(rdpShadowCapture* capture)
{
if (!capture)
return;
DeleteCriticalSection(&(capture->lock));
free(capture);
}
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