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xrdp-proprietary/xorg/server/module/rdpCapture.c

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/**
* xrdp: A Remote Desktop Protocol server.
*
* Copyright (C) Laxmikant Rashinkar 2014
*
* 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.
*
* Routines to copy regions from framebuffer to shared memory
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/* this should be before all X11 .h files */
#include <xorg-server.h>
/* all driver need this */
#include <xf86.h>
#include <xf86_OSproc.h>
#include "rdp.h"
#include "rdpDraw.h"
#include "rdpClientCon.h"
#include "rdpReg.h"
#include "rdpMisc.h"
#define LOG_LEVEL 1
#define LLOGLN(_level, _args) \
do { if (_level < LOG_LEVEL) { ErrorF _args ; ErrorF("\n"); } } while (0)
/******************************************************************************/
static Bool
rdpCapture0(RegionPtr in_reg, BoxPtr *out_rects, int *num_out_rects,
void *src, int src_width, int src_height,
int src_stride, int src_format,
void *dst, int dst_width, int dst_height,
int dst_stride, int dst_format, int max_rects)
{
BoxPtr psrc_rects;
BoxRec rect;
RegionRec reg;
char *src_rect;
char *dst_rect;
int num_regions;
int bytespp;
int src_bytespp;
int dst_bytespp;
int width;
int height;
int src_offset;
int dst_offset;
int bytes;
int i;
int j;
int k;
int red;
int green;
int blue;
Bool rv;
unsigned int *s32;
unsigned int *d32;
unsigned short *d16;
unsigned char *d8;
LLOGLN(10, ("rdpCapture0:"));
rv = TRUE;
rect.x1 = 0;
rect.y1 = 0;
rect.x2 = min(dst_width, src_width);
rect.y2 = min(dst_height, src_height);
rdpRegionInit(&reg, &rect, 0);
rdpRegionIntersect(&reg, in_reg, &reg);
num_regions = REGION_NUM_RECTS(&reg);
if (num_regions > max_rects)
{
num_regions = 1;
psrc_rects = rdpRegionExtents(&reg);
}
else
{
psrc_rects = REGION_RECTS(&reg);
}
if (num_regions < 1)
{
return FALSE;
}
*num_out_rects = num_regions;
*out_rects = (BoxPtr) g_malloc(sizeof(BoxRec) * num_regions, 0);
for (i = 0; i < num_regions; i++)
{
rect = psrc_rects[i];
(*out_rects)[i] = rect;
}
if ((src_format == XRDP_a8r8g8b8) && (dst_format == XRDP_a8r8g8b8))
{
bytespp = 4;
for (i = 0; i < num_regions; i++)
{
/* get rect to copy */
rect = (*out_rects)[i];
/* get rect dimensions */
width = rect.x2 - rect.x1;
height = rect.y2 - rect.y1;
/* point to start of each rect in respective memory */
src_offset = rect.y1 * src_stride + rect.x1 * bytespp;
dst_offset = rect.y1 * dst_stride + rect.x1 * bytespp;
src_rect = src + src_offset;
dst_rect = dst + dst_offset;
/* bytes per line */
bytes = width * bytespp;
/* copy one line at a time */
for (j = 0; j < height; j++)
{
memcpy(dst_rect, src_rect, bytes);
src_rect += src_stride;
dst_rect += dst_stride;
}
}
}
else if ((src_format == XRDP_a8r8g8b8) && (dst_format == XRDP_a8b8g8r8))
{
src_bytespp = 4;
dst_bytespp = 4;
for (i = 0; i < num_regions; i++)
{
/* get rect to copy */
rect = (*out_rects)[i];
/* get rect dimensions */
width = rect.x2 - rect.x1;
height = rect.y2 - rect.y1;
/* point to start of each rect in respective memory */
src_offset = rect.y1 * src_stride + rect.x1 * src_bytespp;
dst_offset = rect.y1 * dst_stride + rect.x1 * dst_bytespp;
src_rect = src + src_offset;
dst_rect = dst + dst_offset;
/* copy one line at a time */
for (j = 0; j < height; j++)
{
s32 = (unsigned int *) src_rect;
d32 = (unsigned int *) dst_rect;
for (k = 0; k < width; k++)
{
SPLITCOLOR32(red, green, blue, *s32);
*d32 = COLOR24(red, green, blue);
s32++;
d32++;
}
src_rect += src_stride;
dst_rect += dst_stride;
}
}
}
else if ((src_format == XRDP_a8r8g8b8) && (dst_format == XRDP_r5g6b5))
{
src_bytespp = 4;
dst_bytespp = 2;
for (i = 0; i < num_regions; i++)
{
/* get rect to copy */
rect = (*out_rects)[i];
/* get rect dimensions */
width = rect.x2 - rect.x1;
height = rect.y2 - rect.y1;
/* point to start of each rect in respective memory */
src_offset = rect.y1 * src_stride + rect.x1 * src_bytespp;
dst_offset = rect.y1 * dst_stride + rect.x1 * dst_bytespp;
src_rect = src + src_offset;
dst_rect = dst + dst_offset;
/* copy one line at a time */
for (j = 0; j < height; j++)
{
s32 = (unsigned int *) src_rect;
d16 = (unsigned short *) dst_rect;
for (k = 0; k < width; k++)
{
SPLITCOLOR32(red, green, blue, *s32);
*d16 = COLOR16(red, green, blue);
s32++;
d16++;
}
src_rect += src_stride;
dst_rect += dst_stride;
}
}
}
else if ((src_format == XRDP_a8r8g8b8) && (dst_format == XRDP_a1r5g5b5))
{
src_bytespp = 4;
dst_bytespp = 2;
for (i = 0; i < num_regions; i++)
{
/* get rect to copy */
rect = (*out_rects)[i];
/* get rect dimensions */
width = rect.x2 - rect.x1;
height = rect.y2 - rect.y1;
/* point to start of each rect in respective memory */
src_offset = rect.y1 * src_stride + rect.x1 * src_bytespp;
dst_offset = rect.y1 * dst_stride + rect.x1 * dst_bytespp;
src_rect = src + src_offset;
dst_rect = dst + dst_offset;
/* copy one line at a time */
for (j = 0; j < height; j++)
{
s32 = (unsigned int *) src_rect;
d16 = (unsigned short *) dst_rect;
for (k = 0; k < width; k++)
{
SPLITCOLOR32(red, green, blue, *s32);
*d16 = COLOR15(red, green, blue);
s32++;
d16++;
}
src_rect += src_stride;
dst_rect += dst_stride;
}
}
}
else if ((src_format == XRDP_a8r8g8b8) && (dst_format == XRDP_r3g3b2))
{
src_bytespp = 4;
dst_bytespp = 1;
for (i = 0; i < num_regions; i++)
{
/* get rect to copy */
rect = (*out_rects)[i];
/* get rect dimensions */
width = rect.x2 - rect.x1;
height = rect.y2 - rect.y1;
/* point to start of each rect in respective memory */
src_offset = rect.y1 * src_stride + rect.x1 * src_bytespp;
dst_offset = rect.y1 * dst_stride + rect.x1 * dst_bytespp;
src_rect = src + src_offset;
dst_rect = dst + dst_offset;
/* copy one line at a time */
for (j = 0; j < height; j++)
{
s32 = (unsigned int *) src_rect;
d8 = (unsigned char *) dst_rect;
for (k = 0; k < width; k++)
{
SPLITCOLOR32(red, green, blue, *s32);
*d8 = COLOR8(red, green, blue);
s32++;
d8++;
}
src_rect += src_stride;
dst_rect += dst_stride;
}
}
}
else
{
LLOGLN(0, ("rdpCapture0: unimp color conversion"));
}
rdpRegionUninit(&reg);
return rv;
}
/******************************************************************************/
/* make out_rects always multiple of 16 width and height */
static Bool
rdpCapture1(RegionPtr in_reg, BoxPtr *out_rects, int *num_out_rects,
void *src, int src_width, int src_height,
int src_stride, int src_format,
void *dst, int dst_width, int dst_height,
int dst_stride, int dst_format, int max_rects)
{
BoxPtr psrc_rects;
BoxRec rect;
RegionRec reg;
char *src_rect;
char *dst_rect;
int num_regions;
int src_bytespp;
int dst_bytespp;
int width;
int height;
int min_width;
int min_height;
int src_offset;
int dst_offset;
int index;
int jndex;
int kndex;
int red;
int green;
int blue;
int ex;
int ey;
Bool rv;
unsigned int *s32;
unsigned int *d32;
LLOGLN(10, ("rdpCapture1:"));
rv = TRUE;
min_width = RDPMIN(dst_width, src_width);
min_height = RDPMIN(dst_height, src_height);
rect.x1 = 0;
rect.y1 = 0;
rect.x2 = min_width;
rect.y2 = min_height;
rdpRegionInit(&reg, &rect, 0);
rdpRegionIntersect(&reg, in_reg, &reg);
num_regions = REGION_NUM_RECTS(&reg);
if (num_regions > max_rects)
{
num_regions = 1;
psrc_rects = rdpRegionExtents(&reg);
}
else
{
psrc_rects = REGION_RECTS(&reg);
}
if (num_regions < 1)
{
return FALSE;
}
*num_out_rects = num_regions;
*out_rects = (BoxPtr) g_malloc(sizeof(BoxRec) * num_regions * 4, 0);
index = 0;
while (index < num_regions)
{
rect = psrc_rects[index];
width = rect.x2 - rect.x1;
height = rect.y2 - rect.y1;
ex = ((width + 15) & ~15) - width;
if (ex != 0)
{
rect.x2 += ex;
if (rect.x2 > min_width)
{
rect.x1 -= rect.x2 - min_width;
rect.x2 = min_width;
}
if (rect.x1 < 0)
{
rect.x1 += 16;
}
}
ey = ((height + 15) & ~15) - height;
if (ey != 0)
{
rect.y2 += ey;
if (rect.y2 > min_height)
{
rect.y1 -= rect.y2 - min_height;
rect.y2 = min_height;
}
if (rect.y1 < 0)
{
rect.y1 += 16;
}
}
#if 0
if (rect.x1 < 0)
{
LLOGLN(0, ("rdpCapture1: error"));
}
if (rect.y1 < 0)
{
LLOGLN(0, ("rdpCapture1: error"));
}
if (rect.x2 > min_width)
{
LLOGLN(0, ("rdpCapture1: error"));
}
if (rect.y2 > min_height)
{
LLOGLN(0, ("rdpCapture1: error"));
}
if ((rect.x2 - rect.x1) % 16 != 0)
{
LLOGLN(0, ("rdpCapture1: error"));
}
if ((rect.y2 - rect.y1) % 16 != 0)
{
LLOGLN(0, ("rdpCapture1: error"));
}
#endif
(*out_rects)[index] = rect;
index++;
}
if ((src_format == XRDP_a8r8g8b8) && (dst_format == XRDP_a8b8g8r8))
{
src_bytespp = 4;
dst_bytespp = 4;
for (index = 0; index < num_regions; index++)
{
/* get rect to copy */
rect = (*out_rects)[index];
/* get rect dimensions */
width = rect.x2 - rect.x1;
height = rect.y2 - rect.y1;
/* point to start of each rect in respective memory */
src_offset = rect.y1 * src_stride + rect.x1 * src_bytespp;
dst_offset = rect.y1 * dst_stride + rect.x1 * dst_bytespp;
src_rect = src + src_offset;
dst_rect = dst + dst_offset;
/* copy one line at a time */
for (jndex = 0; jndex < height; jndex++)
{
s32 = (unsigned int *) src_rect;
d32 = (unsigned int *) dst_rect;
for (kndex = 0; kndex < width; kndex++)
{
SPLITCOLOR32(red, green, blue, *s32);
*d32 = COLOR24(red, green, blue);
s32++;
d32++;
}
src_rect += src_stride;
dst_rect += dst_stride;
}
}
}
else
{
LLOGLN(0, ("rdpCapture1: unimp color conversion"));
}
rdpRegionUninit(&reg);
return rv;
}
/**
* Copy an array of rectangles from one memory area to another
*****************************************************************************/
Bool
rdpCapture(RegionPtr in_reg, BoxPtr *out_rects, int *num_out_rects,
void *src, int src_width, int src_height,
int src_stride, int src_format,
void *dst, int dst_width, int dst_height,
int dst_stride, int dst_format, int mode)
{
LLOGLN(10, ("rdpCapture:"));
switch (mode)
{
case 0:
return rdpCapture0(in_reg, out_rects, num_out_rects,
src, src_width, src_height,
src_stride, src_format,
dst, dst_width, dst_height,
dst_stride, dst_format, 15);
case 1:
return rdpCapture1(in_reg, out_rects, num_out_rects,
src, src_width, src_height,
src_stride, src_format,
dst, dst_width, dst_height,
dst_stride, dst_format, 15);
default:
LLOGLN(0, ("rdpCapture: unimp mode"));
break;
}
return FALSE;
}
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