You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
611 lines
16 KiB
611 lines
16 KiB
/*
|
|
* Copyright (C) 2000, 2001 Const Kaplinsky. All Rights Reserved.
|
|
*
|
|
* This is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This software 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this software; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
|
|
* USA.
|
|
*/
|
|
|
|
/*
|
|
* tight.c - handle ``tight'' encoding.
|
|
*
|
|
* This file shouldn't be compiled directly. It is included multiple
|
|
* times by rfbproto.c, each time with a different definition of the
|
|
* macro BPP. For each value of BPP, this file defines a function
|
|
* which handles a tight-encoded rectangle with BPP bits per pixel.
|
|
*
|
|
*/
|
|
|
|
#define TIGHT_MIN_TO_COMPRESS 12
|
|
|
|
#define CARDBPP CONCAT2E(CARD,BPP)
|
|
#define filterPtrBPP CONCAT2E(filterPtr,BPP)
|
|
|
|
#define HandleTightBPP CONCAT2E(HandleTight,BPP)
|
|
#define InitFilterCopyBPP CONCAT2E(InitFilterCopy,BPP)
|
|
#define InitFilterPaletteBPP CONCAT2E(InitFilterPalette,BPP)
|
|
#define InitFilterGradientBPP CONCAT2E(InitFilterGradient,BPP)
|
|
#define FilterCopyBPP CONCAT2E(FilterCopy,BPP)
|
|
#define FilterPaletteBPP CONCAT2E(FilterPalette,BPP)
|
|
#define FilterGradientBPP CONCAT2E(FilterGradient,BPP)
|
|
#define FillRectangleBPP CONCAT2E(FillRectangle,BPP)
|
|
|
|
#if BPP != 8
|
|
#define DecompressJpegRectBPP CONCAT2E(DecompressJpegRect,BPP)
|
|
#endif
|
|
|
|
#ifndef RGB_TO_PIXEL
|
|
|
|
#define RGB_TO_PIXEL(bpp,r,g,b) \
|
|
(((CARD##bpp)(r) & myFormat.redMax) << myFormat.redShift | \
|
|
((CARD##bpp)(g) & myFormat.greenMax) << myFormat.greenShift | \
|
|
((CARD##bpp)(b) & myFormat.blueMax) << myFormat.blueShift)
|
|
|
|
#define RGB24_TO_PIXEL(bpp,r,g,b) \
|
|
((((CARD##bpp)(r) & 0xFF) * myFormat.redMax + 127) / 255 \
|
|
<< myFormat.redShift | \
|
|
(((CARD##bpp)(g) & 0xFF) * myFormat.greenMax + 127) / 255 \
|
|
<< myFormat.greenShift | \
|
|
(((CARD##bpp)(b) & 0xFF) * myFormat.blueMax + 127) / 255 \
|
|
<< myFormat.blueShift)
|
|
|
|
#define RGB24_TO_PIXEL32(r,g,b) \
|
|
(((CARD32)(r) & 0xFF) << myFormat.redShift | \
|
|
((CARD32)(g) & 0xFF) << myFormat.greenShift | \
|
|
((CARD32)(b) & 0xFF) << myFormat.blueShift)
|
|
|
|
#endif
|
|
|
|
/* Type declarations */
|
|
|
|
typedef void (*filterPtrBPP)(int, CARDBPP *);
|
|
|
|
/* Prototypes */
|
|
|
|
static int InitFilterCopyBPP (int rw, int rh);
|
|
static int InitFilterPaletteBPP (int rw, int rh);
|
|
static int InitFilterGradientBPP (int rw, int rh);
|
|
static void FilterCopyBPP (int numRows, CARDBPP *destBuffer);
|
|
static void FilterPaletteBPP (int numRows, CARDBPP *destBuffer);
|
|
static void FilterGradientBPP (int numRows, CARDBPP *destBuffer);
|
|
|
|
static Bool DecompressJpegRectBPP(int x, int y, int w, int h);
|
|
|
|
/* Definitions */
|
|
|
|
static Bool
|
|
HandleTightBPP (int rx, int ry, int rw, int rh)
|
|
{
|
|
CARDBPP fill_colour;
|
|
XGCValues gcv;
|
|
CARD8 comp_ctl;
|
|
CARD8 filter_id;
|
|
filterPtrBPP filterFn;
|
|
z_streamp zs;
|
|
char *buffer2;
|
|
int err, stream_id, compressedLen, bitsPixel;
|
|
int bufferSize, rowSize, numRows, portionLen, rowsProcessed, extraBytes;
|
|
CARDBPP *rawData;
|
|
|
|
if (!ReadFromRFBServer((char *)&comp_ctl, 1))
|
|
return False;
|
|
|
|
/* Flush zlib streams if we are told by the server to do so. */
|
|
for (stream_id = 0; stream_id < 4; stream_id++) {
|
|
if ((comp_ctl & 1) && zlibStreamActive[stream_id]) {
|
|
if (inflateEnd (&zlibStream[stream_id]) != Z_OK &&
|
|
zlibStream[stream_id].msg != NULL)
|
|
fprintf(stderr, "inflateEnd: %s\n", zlibStream[stream_id].msg);
|
|
zlibStreamActive[stream_id] = False;
|
|
}
|
|
comp_ctl >>= 1;
|
|
}
|
|
|
|
/* Handle solid rectangles. */
|
|
if (comp_ctl == rfbTightFill) {
|
|
#if BPP == 32
|
|
if (myFormat.depth == 24 && myFormat.redMax == 0xFF &&
|
|
myFormat.greenMax == 0xFF && myFormat.blueMax == 0xFF) {
|
|
if (!ReadFromRFBServer(buffer, 3))
|
|
return False;
|
|
fill_colour = RGB24_TO_PIXEL32(buffer[0], buffer[1], buffer[2]);
|
|
} else {
|
|
if (!ReadFromRFBServer((char*)&fill_colour, sizeof(fill_colour)))
|
|
return False;
|
|
}
|
|
#else
|
|
if (!ReadFromRFBServer((char*)&fill_colour, sizeof(fill_colour)))
|
|
return False;
|
|
#endif
|
|
|
|
LockFramebuffer();
|
|
FillRectangleBPP(fill_colour, rx, ry, rw, rh);
|
|
UnlockFramebuffer();
|
|
SyncScreenRegion(rx, ry, rw, rh);
|
|
return True;
|
|
}
|
|
|
|
#if BPP == 8
|
|
if (comp_ctl == rfbTightJpeg) {
|
|
fprintf(stderr, "Tight encoding: JPEG is not supported in 8 bpp mode.\n");
|
|
return False;
|
|
}
|
|
#else
|
|
if (comp_ctl == rfbTightJpeg) {
|
|
return DecompressJpegRectBPP(rx, ry, rw, rh);
|
|
}
|
|
#endif
|
|
|
|
/* Quit on unsupported subencoding value. */
|
|
if (comp_ctl > rfbTightMaxSubencoding) {
|
|
fprintf(stderr, "Tight encoding: bad subencoding value received.\n");
|
|
return False;
|
|
}
|
|
|
|
/*
|
|
* Here primary compression mode handling begins.
|
|
* Data was processed with optional filter + zlib compression.
|
|
*/
|
|
|
|
/* First, we should identify a filter to use. */
|
|
if ((comp_ctl & rfbTightExplicitFilter) != 0) {
|
|
if (!ReadFromRFBServer((char*)&filter_id, 1))
|
|
return False;
|
|
|
|
switch (filter_id) {
|
|
case rfbTightFilterCopy:
|
|
filterFn = FilterCopyBPP;
|
|
bitsPixel = InitFilterCopyBPP(rw, rh);
|
|
break;
|
|
case rfbTightFilterPalette:
|
|
filterFn = FilterPaletteBPP;
|
|
bitsPixel = InitFilterPaletteBPP(rw, rh);
|
|
break;
|
|
case rfbTightFilterGradient:
|
|
filterFn = FilterGradientBPP;
|
|
bitsPixel = InitFilterGradientBPP(rw, rh);
|
|
break;
|
|
default:
|
|
fprintf(stderr, "Tight encoding: unknown filter code received.\n");
|
|
return False;
|
|
}
|
|
} else {
|
|
filterFn = FilterCopyBPP;
|
|
bitsPixel = InitFilterCopyBPP(rw, rh);
|
|
}
|
|
if (bitsPixel == 0) {
|
|
fprintf(stderr, "Tight encoding: error receiving palette.\n");
|
|
return False;
|
|
}
|
|
|
|
/* Determine if the data should be decompressed or just copied. */
|
|
rowSize = (rw * bitsPixel + 7) / 8;
|
|
if (rh * rowSize < TIGHT_MIN_TO_COMPRESS) {
|
|
if (!ReadFromRFBServer((char*)buffer, rh * rowSize))
|
|
return False;
|
|
|
|
buffer2 = &buffer[TIGHT_MIN_TO_COMPRESS * 4];
|
|
filterFn(rh, (CARDBPP *)buffer2);
|
|
CopyDataToScreen(buffer2, rx, ry, rw, rh);
|
|
|
|
return True;
|
|
}
|
|
|
|
/* Read the length (1..3 bytes) of compressed data following. */
|
|
compressedLen = (int)ReadCompactLen();
|
|
if (compressedLen <= 0) {
|
|
fprintf(stderr, "Incorrect data received from the server.\n");
|
|
return False;
|
|
}
|
|
|
|
/* Now let's initialize compression stream if needed. */
|
|
stream_id = comp_ctl & 0x03;
|
|
zs = &zlibStream[stream_id];
|
|
if (!zlibStreamActive[stream_id]) {
|
|
zs->zalloc = Z_NULL;
|
|
zs->zfree = Z_NULL;
|
|
zs->opaque = Z_NULL;
|
|
err = inflateInit(zs);
|
|
if (err != Z_OK) {
|
|
if (zs->msg != NULL)
|
|
fprintf(stderr, "InflateInit error: %s.\n", zs->msg);
|
|
return False;
|
|
}
|
|
zlibStreamActive[stream_id] = True;
|
|
}
|
|
|
|
/* Read, decode and draw actual pixel data in a loop. */
|
|
|
|
bufferSize = BUFFER_SIZE * bitsPixel / (bitsPixel + BPP) & 0xFFFFFFFC;
|
|
buffer2 = &buffer[bufferSize];
|
|
if (rowSize > bufferSize) {
|
|
/* Should be impossible when BUFFER_SIZE >= 16384 */
|
|
fprintf(stderr, "Internal error: incorrect buffer size.\n");
|
|
return False;
|
|
}
|
|
|
|
rowsProcessed = 0;
|
|
extraBytes = 0;
|
|
|
|
while (compressedLen > 0) {
|
|
if (compressedLen > ZLIB_BUFFER_SIZE)
|
|
portionLen = ZLIB_BUFFER_SIZE;
|
|
else
|
|
portionLen = compressedLen;
|
|
|
|
if (!ReadFromRFBServer((char*)zlib_buffer, portionLen))
|
|
return False;
|
|
|
|
compressedLen -= portionLen;
|
|
|
|
zs->next_in = (Bytef *)zlib_buffer;
|
|
zs->avail_in = portionLen;
|
|
|
|
do {
|
|
zs->next_out = (Bytef *)&buffer[extraBytes];
|
|
zs->avail_out = bufferSize - extraBytes;
|
|
|
|
err = inflate(zs, Z_SYNC_FLUSH);
|
|
if (err == Z_BUF_ERROR) /* Input exhausted -- no problem. */
|
|
break;
|
|
if (err != Z_OK && err != Z_STREAM_END) {
|
|
if (zs->msg != NULL) {
|
|
fprintf(stderr, "Inflate error: %s.\n", zs->msg);
|
|
} else {
|
|
fprintf(stderr, "Inflate error: %d.\n", err);
|
|
}
|
|
return False;
|
|
}
|
|
|
|
numRows = (bufferSize - zs->avail_out) / rowSize;
|
|
|
|
filterFn(numRows, (CARDBPP *)buffer2);
|
|
|
|
extraBytes = bufferSize - zs->avail_out - numRows * rowSize;
|
|
if (extraBytes > 0)
|
|
memcpy(buffer, &buffer[numRows * rowSize], extraBytes);
|
|
|
|
CopyDataToScreen(buffer2, rx, ry + rowsProcessed, rw, numRows);
|
|
rowsProcessed += numRows;
|
|
}
|
|
while (zs->avail_out == 0);
|
|
}
|
|
|
|
if (rowsProcessed != rh) {
|
|
fprintf(stderr, "Incorrect number of scan lines after decompression.\n");
|
|
return False;
|
|
}
|
|
|
|
return True;
|
|
}
|
|
|
|
/*----------------------------------------------------------------------------
|
|
*
|
|
* Filter stuff.
|
|
*
|
|
*/
|
|
|
|
/*
|
|
The following variables are defined in rfbproto.c:
|
|
static Bool cutZeros;
|
|
static int rectWidth, rectColors;
|
|
static CARD8 tightPalette[256*4];
|
|
static CARD8 tightPrevRow[2048*3*sizeof(CARD16)];
|
|
*/
|
|
|
|
static int
|
|
InitFilterCopyBPP (int rw, int rh)
|
|
{
|
|
rectWidth = rw;
|
|
|
|
#if BPP == 32
|
|
if (myFormat.depth == 24 && myFormat.redMax == 0xFF &&
|
|
myFormat.greenMax == 0xFF && myFormat.blueMax == 0xFF) {
|
|
cutZeros = True;
|
|
return 24;
|
|
} else {
|
|
cutZeros = False;
|
|
}
|
|
#endif
|
|
|
|
return BPP;
|
|
}
|
|
|
|
static void
|
|
FilterCopyBPP (int numRows, CARDBPP *dst)
|
|
{
|
|
|
|
#if BPP == 32
|
|
int x, y;
|
|
|
|
if (cutZeros) {
|
|
for (y = 0; y < numRows; y++) {
|
|
for (x = 0; x < rectWidth; x++) {
|
|
dst[y*rectWidth+x] =
|
|
RGB24_TO_PIXEL32(buffer[(y*rectWidth+x)*3],
|
|
buffer[(y*rectWidth+x)*3+1],
|
|
buffer[(y*rectWidth+x)*3+2]);
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
memcpy (dst, buffer, numRows * rectWidth * (BPP / 8));
|
|
}
|
|
|
|
static int
|
|
InitFilterGradientBPP (int rw, int rh)
|
|
{
|
|
int bits;
|
|
|
|
bits = InitFilterCopyBPP(rw, rh);
|
|
if (cutZeros)
|
|
memset(tightPrevRow, 0, rw * 3);
|
|
else
|
|
memset(tightPrevRow, 0, rw * 3 * sizeof(CARD16));
|
|
|
|
return bits;
|
|
}
|
|
|
|
#if BPP == 32
|
|
|
|
static void
|
|
FilterGradient24 (int numRows, CARD32 *dst)
|
|
{
|
|
int x, y, c;
|
|
CARD8 thisRow[2048*3];
|
|
CARD8 pix[3];
|
|
int est[3];
|
|
|
|
for (y = 0; y < numRows; y++) {
|
|
|
|
/* First pixel in a row */
|
|
for (c = 0; c < 3; c++) {
|
|
pix[c] = tightPrevRow[c] + buffer[y*rectWidth*3+c];
|
|
thisRow[c] = pix[c];
|
|
}
|
|
dst[y*rectWidth] = RGB24_TO_PIXEL32(pix[0], pix[1], pix[2]);
|
|
|
|
/* Remaining pixels of a row */
|
|
for (x = 1; x < rectWidth; x++) {
|
|
for (c = 0; c < 3; c++) {
|
|
est[c] = (int)tightPrevRow[x*3+c] + (int)pix[c] -
|
|
(int)tightPrevRow[(x-1)*3+c];
|
|
if (est[c] > 0xFF) {
|
|
est[c] = 0xFF;
|
|
} else if (est[c] < 0x00) {
|
|
est[c] = 0x00;
|
|
}
|
|
pix[c] = (CARD8)est[c] + buffer[(y*rectWidth+x)*3+c];
|
|
thisRow[x*3+c] = pix[c];
|
|
}
|
|
dst[y*rectWidth+x] = RGB24_TO_PIXEL32(pix[0], pix[1], pix[2]);
|
|
}
|
|
|
|
memcpy(tightPrevRow, thisRow, rectWidth * 3);
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|
|
static void
|
|
FilterGradientBPP (int numRows, CARDBPP *dst)
|
|
{
|
|
int x, y, c;
|
|
CARDBPP *src = (CARDBPP *)buffer;
|
|
CARD16 *thatRow = (CARD16 *)tightPrevRow;
|
|
CARD16 thisRow[2048*3];
|
|
CARD16 pix[3];
|
|
CARD16 max[3];
|
|
int shift[3];
|
|
int est[3];
|
|
|
|
#if BPP == 32
|
|
if (cutZeros) {
|
|
FilterGradient24(numRows, dst);
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
max[0] = myFormat.redMax;
|
|
max[1] = myFormat.greenMax;
|
|
max[2] = myFormat.blueMax;
|
|
|
|
shift[0] = myFormat.redShift;
|
|
shift[1] = myFormat.greenShift;
|
|
shift[2] = myFormat.blueShift;
|
|
|
|
for (y = 0; y < numRows; y++) {
|
|
|
|
/* First pixel in a row */
|
|
for (c = 0; c < 3; c++) {
|
|
pix[c] = (CARD16)((src[y*rectWidth] >> shift[c]) + thatRow[c] & max[c]);
|
|
thisRow[c] = pix[c];
|
|
}
|
|
dst[y*rectWidth] = RGB_TO_PIXEL(BPP, pix[0], pix[1], pix[2]);
|
|
|
|
/* Remaining pixels of a row */
|
|
for (x = 1; x < rectWidth; x++) {
|
|
for (c = 0; c < 3; c++) {
|
|
est[c] = (int)thatRow[x*3+c] + (int)pix[c] - (int)thatRow[(x-1)*3+c];
|
|
if (est[c] > (int)max[c]) {
|
|
est[c] = (int)max[c];
|
|
} else if (est[c] < 0) {
|
|
est[c] = 0;
|
|
}
|
|
pix[c] = (CARD16)((src[y*rectWidth+x] >> shift[c]) + est[c] & max[c]);
|
|
thisRow[x*3+c] = pix[c];
|
|
}
|
|
dst[y*rectWidth+x] = RGB_TO_PIXEL(BPP, pix[0], pix[1], pix[2]);
|
|
}
|
|
memcpy(thatRow, thisRow, rectWidth * 3 * sizeof(CARD16));
|
|
}
|
|
}
|
|
|
|
static int
|
|
InitFilterPaletteBPP (int rw, int rh)
|
|
{
|
|
int i;
|
|
CARD8 numColors;
|
|
CARDBPP *palette = (CARDBPP *)tightPalette;
|
|
|
|
rectWidth = rw;
|
|
|
|
if (!ReadFromRFBServer((char*)&numColors, 1))
|
|
return 0;
|
|
|
|
rectColors = (int)numColors;
|
|
if (++rectColors < 2)
|
|
return 0;
|
|
|
|
#if BPP == 32
|
|
if (myFormat.depth == 24 && myFormat.redMax == 0xFF &&
|
|
myFormat.greenMax == 0xFF && myFormat.blueMax == 0xFF) {
|
|
if (!ReadFromRFBServer((char*)&tightPalette, rectColors * 3))
|
|
return 0;
|
|
for (i = rectColors - 1; i >= 0; i--) {
|
|
palette[i] = RGB24_TO_PIXEL32(tightPalette[i*3],
|
|
tightPalette[i*3+1],
|
|
tightPalette[i*3+2]);
|
|
}
|
|
return (rectColors == 2) ? 1 : 8;
|
|
}
|
|
#endif
|
|
|
|
if (!ReadFromRFBServer((char*)&tightPalette, rectColors * (BPP / 8)))
|
|
return 0;
|
|
|
|
return (rectColors == 2) ? 1 : 8;
|
|
}
|
|
|
|
static void
|
|
FilterPaletteBPP (int numRows, CARDBPP *dst)
|
|
{
|
|
int x, y, b, w;
|
|
CARD8 *src = (CARD8 *)buffer;
|
|
CARDBPP *palette = (CARDBPP *)tightPalette;
|
|
|
|
if (rectColors == 2) {
|
|
w = (rectWidth + 7) / 8;
|
|
for (y = 0; y < numRows; y++) {
|
|
for (x = 0; x < rectWidth / 8; x++) {
|
|
for (b = 7; b >= 0; b--)
|
|
dst[y*rectWidth+x*8+7-b] = palette[src[y*w+x] >> b & 1];
|
|
}
|
|
for (b = 7; b >= 8 - rectWidth % 8; b--) {
|
|
dst[y*rectWidth+x*8+7-b] = palette[src[y*w+x] >> b & 1];
|
|
}
|
|
}
|
|
} else {
|
|
for (y = 0; y < numRows; y++)
|
|
for (x = 0; x < rectWidth; x++)
|
|
dst[y*rectWidth+x] = palette[(int)src[y*rectWidth+x]];
|
|
}
|
|
}
|
|
|
|
#if BPP != 8
|
|
|
|
/*----------------------------------------------------------------------------
|
|
*
|
|
* JPEG decompression.
|
|
*
|
|
*/
|
|
|
|
/*
|
|
The following variables are defined in rfbproto.c:
|
|
static Bool jpegError;
|
|
static struct jpeg_source_mgr jpegSrcManager;
|
|
static JOCTET *jpegBufferPtr;
|
|
static size_t *jpegBufferLen;
|
|
*/
|
|
|
|
static Bool
|
|
DecompressJpegRectBPP(int x, int y, int w, int h)
|
|
{
|
|
struct jpeg_decompress_struct cinfo;
|
|
struct jpeg_error_mgr jerr;
|
|
int compressedLen;
|
|
CARD8 *compressedData;
|
|
CARDBPP *pixelPtr;
|
|
JSAMPROW rowPointer[1];
|
|
int dx, dy;
|
|
|
|
compressedLen = (int)ReadCompactLen();
|
|
if (compressedLen <= 0) {
|
|
fprintf(stderr, "Incorrect data received from the server.\n");
|
|
return False;
|
|
}
|
|
|
|
if (compressedLen > MAX_JPEG_SIZE) {
|
|
fprintf(stderr, "To large data announced by the server.\n");
|
|
return False;
|
|
}
|
|
|
|
compressedData = malloc(compressedLen);
|
|
if (compressedData == NULL) {
|
|
fprintf(stderr, "Memory allocation error.\n");
|
|
return False;
|
|
}
|
|
|
|
if (!ReadFromRFBServer((char*)compressedData, compressedLen)) {
|
|
free(compressedData);
|
|
return False;
|
|
}
|
|
|
|
cinfo.err = jpeg_std_error(&jerr);
|
|
jpeg_create_decompress(&cinfo);
|
|
|
|
JpegSetSrcManager(&cinfo, compressedData, compressedLen);
|
|
|
|
jpeg_read_header(&cinfo, TRUE);
|
|
cinfo.out_color_space = JCS_RGB;
|
|
|
|
jpeg_start_decompress(&cinfo);
|
|
if (cinfo.output_width != w || cinfo.output_height != h ||
|
|
cinfo.output_components != 3) {
|
|
fprintf(stderr, "Tight Encoding: Wrong JPEG data received.\n");
|
|
jpeg_destroy_decompress(&cinfo);
|
|
free(compressedData);
|
|
return False;
|
|
}
|
|
|
|
rowPointer[0] = (JSAMPROW)buffer;
|
|
dy = 0;
|
|
while (cinfo.output_scanline < cinfo.output_height) {
|
|
jpeg_read_scanlines(&cinfo, rowPointer, 1);
|
|
if (jpegError) {
|
|
break;
|
|
}
|
|
pixelPtr = (CARDBPP *)&buffer[BUFFER_SIZE / 2];
|
|
for (dx = 0; dx < w; dx++) {
|
|
*pixelPtr++ =
|
|
RGB24_TO_PIXEL(BPP, buffer[dx*3], buffer[dx*3+1], buffer[dx*3+2]);
|
|
}
|
|
CopyDataToScreen(&buffer[BUFFER_SIZE / 2], x, y + dy, w, 1);
|
|
dy++;
|
|
}
|
|
|
|
if (!jpegError)
|
|
jpeg_finish_decompress(&cinfo);
|
|
|
|
jpeg_destroy_decompress(&cinfo);
|
|
free(compressedData);
|
|
|
|
return !jpegError;
|
|
}
|
|
|
|
#endif
|
|
|