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Optimized code for SetImageBits_X, making bitmap creation faster.

This commit is contained in:
Karl Lessard 1999-04-11 17:04:16 +00:00 committed by Alexandre Julliard
parent 7abca950e3
commit 183f8841db
1 changed files with 220 additions and 0 deletions
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220
graphics/x11drv/dib.c
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@ -699,6 +699,83 @@ static void X11DRV_DIB_SetImageBits_16( int lines, const BYTE *srcbits,
dstwidth += left;
ptr = (LPWORD) srcbits + left;
if (bmpImage->format == ZPixmap)
{
unsigned short indA, indB, indC, indD;
BYTE *imageBits;
switch (bmpImage->bits_per_pixel)
{
case 16:
indA = (bmpImage->byte_order == LSBFirst) ? 1 : 0;
indB = (indA == 1) ? 0 : 1;
if (lines > 0) {
imageBits = (BYTE *)(bmpImage->data + (lines - 1)*bmpImage->bytes_per_line);
for (h = lines - 1; h >= 0; h--) {
for (x = left; x < dstwidth; x++, ptr++) {
val = *ptr;
imageBits[(x << 1) + indA] = (BYTE)((val >> 7) & 0x00ff);
imageBits[(x << 1) + indB] = (BYTE)(((val << 1) & 0x00c0) | (val & 0x001f));
}
ptr = (LPWORD)(srcbits += linebytes) + left;
imageBits -= bmpImage->bytes_per_line;
}
} else {
lines = -lines;
imageBits = (BYTE *)bmpImage->data;
for (h = 0; h < lines; h++) {
for (x = left; x < dstwidth; x++, ptr++) {
val = *ptr;
imageBits[(x << 1) + indA] = (BYTE)((val >> 7) & 0x00ff);
imageBits[(x << 1) + indB] = (BYTE)(((val << 1) & 0x00c0) | (val & 0x001f));
}
ptr = (LPWORD)(srcbits += linebytes) + left;
imageBits -= bmpImage->bytes_per_line;
}
}
return;
case 32:
indA = (bmpImage->byte_order == LSBFirst) ? 3 : 0;
indB = (indA == 3) ? 2 : 1;
indC = (indB == 2) ? 1 : 2;
indD = (indC == 1) ? 0 : 3;
if (lines > 0) {
imageBits = (BYTE *)(bmpImage->data + (lines - 1)*bmpImage->bytes_per_line);
for (h = lines - 1; h >= 0; h--) {
for (x = left; x < dstwidth; x++, ptr ++) {
val = *ptr;
imageBits[(x << 2) + indA] = 0x00; /* a */
imageBits[(x << 2) + indB] = (BYTE)(((val >> 7) & 0x00f8) | ((val >> 12) & 0x0007)); /* red */
imageBits[(x << 2) + indC] = (BYTE)(((val >> 2) & 0x00f8) | ((val >> 7) & 0x0007)); /* green */
imageBits[(x << 2) + indD] = (BYTE)(((val << 3) & 0x00f8) | ((val >> 2) & 0x0007)); /* blue */
}
ptr = (LPWORD)(srcbits += linebytes) + left;
imageBits -= bmpImage->bytes_per_line;
}
} else {
lines = -lines;
imageBits = (BYTE *)(bmpImage->data + (lines - 1)*bmpImage->bytes_per_line);
for (h = 0; h < lines; h++) {
for (x = left; x < dstwidth; x++, ptr ++) {
val = *ptr;
imageBits[(x << 2) + indA] = 0x00;
imageBits[(x << 2) + indB] = (BYTE)(((val >> 7) & 0x00f8) | ((val >> 12) & 0x0007));
imageBits[(x << 2) + indC] = (BYTE)(((val >> 2) & 0x00f8) | ((val >> 7) & 0x0007));
imageBits[(x << 2) + indD] = (BYTE)(((val << 3) & 0x00f8) | ((val >> 2) & 0x0007));
}
ptr = (LPWORD)(srcbits += linebytes) + left;
imageBits -= bmpImage->bytes_per_line;
}
}
return;
}
}
/* Not standard format or Not RGB */
if (lines > 0) {
for (h = lines - 1; h >= 0; h--) {
for (x = left; x < dstwidth; x++, ptr++) {
@ -801,6 +878,78 @@ static void X11DRV_DIB_SetImageBits_24( int lines, const BYTE *srcbits,
/* "bits" order is reversed for some reason */
if (bmpImage->format == ZPixmap)
{
unsigned short indA, indB, indC, indD;
BYTE *imageBits;
switch (bmpImage->bits_per_pixel)
{
case 16:
indA = (bmpImage->byte_order == LSBFirst) ? 1 : 0;
indB = (indA == 1) ? 0 : 1;
if (lines > 0) {
imageBits = (BYTE *)(bmpImage->data + (lines - 1)*bmpImage->bytes_per_line);
for (h = lines - 1; h >= 0; h--) {
for (x = left; x < dstwidth; x++, bits += 3) {
imageBits[(x << 1) + indA] = (bits[0] & 0xf8) | ((bits[1] >> 5) & 0x07);
imageBits[(x << 1) + indB] = ((bits[1] << 3) & 0xc0) | ((bits[2] >> 3) & 0x1f);
}
bits = (srcbits += linebytes) + left * 3;
imageBits -= bmpImage->bytes_per_line;
}
} else {
lines = -lines;
imageBits = (BYTE *)bmpImage->data;
for (h = 0; h < lines; h++) {
for (x = left; x < dstwidth; x++, bits += 3) {
imageBits[(x << 1) + indA] = (bits[0] & 0xf8) | ((bits[1] >> 5) & 0x07);
imageBits[(x << 1) + indB] = ((bits[1] << 3) & 0xc0) | ((bits[2] >> 3) & 0x1f);
}
bits = (srcbits += linebytes) + left * 3;
imageBits += bmpImage->bytes_per_line;
}
}
return;
case 32:
indA = (bmpImage->byte_order == LSBFirst) ? 3 : 0;
indB = (indA == 3) ? 2 : 1;
indC = (indB == 2) ? 1 : 2;
indD = (indC == 1) ? 0 : 3;
if (lines > 0) {
imageBits = (BYTE *)(bmpImage->data + (lines - 1)*bmpImage->bytes_per_line);
for (h = lines - 1; h >= 0; h--) {
for (x = left; x < dstwidth; x++, bits += 3) {
imageBits[(x << 2) + indA] = 0x00; /*a*/
imageBits[(x << 2) + indB] = bits[2]; /*red*/
imageBits[(x << 2) + indC] = bits[1]; /*green*/
imageBits[(x << 2) + indD] = bits[0]; /*blue*/
}
bits = (srcbits += linebytes) + left * 3;
imageBits -= bmpImage->bytes_per_line;
}
} else {
lines = -lines;
imageBits = (BYTE *)(bmpImage->data + (lines - 1)*bmpImage->bytes_per_line);
for (h = 0; h < lines; h++) {
for (x = left; x < dstwidth; x++, bits += 3) {
imageBits[(x << 2) + indA] = 0x00;
imageBits[(x << 2) + indB] = bits[2];
imageBits[(x << 2) + indC] = bits[1];
imageBits[(x << 2) + indD] = bits[0];
}
bits = (srcbits += linebytes) + left * 3;
imageBits += bmpImage->bytes_per_line;
}
}
return;
}
}
/* Not standard format or Not RGB */
if (lines > 0) {
for (h = lines - 1; h >= 0; h--) {
for (x = left; x < dstwidth; x++, bits += 3) {
@ -887,6 +1036,77 @@ static void X11DRV_DIB_SetImageBits_32( int lines, const BYTE *srcbits,
dstwidth += left;
if (bmpImage->format == ZPixmap)
{
unsigned short indA, indB, indC, indD;
BYTE *imageBits;
switch (bmpImage->bits_per_pixel)
{
case 16:
indA = (bmpImage->byte_order == LSBFirst) ? 1 : 0;
indB = (indA == 1) ? 0 : 1;
if (lines > 0) {
imageBits = (BYTE *)(bmpImage->data + (lines - 1)*bmpImage->bytes_per_line);
for (h = lines - 1; h >= 0; h--) {
for (x = left; x < dstwidth; x++, bits += 4) {
imageBits[(x << 1) + indA] = (bits[0] & 0xf8) | ((bits[1] >> 5) & 0x07);
imageBits[(x << 1) + indB] = ((bits[1] << 3) & 0xc0) | ((bits[2] >> 3) & 0x1f);
}
bits = (srcbits += linebytes) + left * 4;
imageBits -= bmpImage->bytes_per_line;
}
} else {
lines = -lines;
imageBits = (BYTE *)bmpImage->data;
for (h = 0; h < lines; h++) {
for (x = left; x < dstwidth; x++, bits += 4) {
imageBits[(x << 1) + indA] = (bits[0] & 0xf8) | ((bits[1] >> 5) & 0x07);
imageBits[(x << 1) + indB] = ((bits[1] << 3) & 0xc0) | ((bits[2] >> 3) & 0x1f);
}
bits = (srcbits += linebytes) + left * 4;
imageBits += bmpImage->bytes_per_line;
}
}
return;
case 32:
indA = (bmpImage->byte_order == LSBFirst) ? 3 : 0;
indB = (indA == 3) ? 2 : 1;
indC = (indB == 2) ? 1 : 2;
indD = (indC == 1) ? 0 : 3;
if (lines > 0) {
imageBits = (BYTE *)(bmpImage->data + (lines - 1)*bmpImage->bytes_per_line);
for (h = lines - 1; h >= 0; h--) {
for (x = left; x < dstwidth; x++, bits += 4) {
imageBits[(x << 2) + indA] = 0x00; /*a*/
imageBits[(x << 2) + indB] = bits[2]; /*red*/
imageBits[(x << 2) + indC] = bits[1]; /*green*/
imageBits[(x << 2) + indD] = bits[0]; /*blue*/
}
bits = (srcbits += linebytes) + left * 4;
imageBits -= bmpImage->bytes_per_line;
}
} else {
lines = -lines;
imageBits = (BYTE *)(bmpImage->data + (lines - 1)*bmpImage->bytes_per_line);
for (h = 0; h < lines; h++) {
for (x = left; x < dstwidth; x++, bits += 4) {
imageBits[(x << 2) + indA] = 0x00;
imageBits[(x << 2) + indB] = bits[2];
imageBits[(x << 2) + indC] = bits[1];
imageBits[(x << 2) + indD] = bits[0];
}
bits = (srcbits += linebytes) + left * 4;
imageBits += bmpImage->bytes_per_line;
}
}
return;
}
}
if (lines > 0) {
for (h = lines - 1; h >= 0; h--) {
for (x = left; x < dstwidth; x++, bits += 4) {