diff options
Diffstat (limited to 'libX11/src/PutImage.c')
| -rw-r--r-- | libX11/src/PutImage.c | 2088 |
1 files changed, 1044 insertions, 1044 deletions
diff --git a/libX11/src/PutImage.c b/libX11/src/PutImage.c index f5d74575c..6dad4f13a 100644 --- a/libX11/src/PutImage.c +++ b/libX11/src/PutImage.c @@ -1,1044 +1,1044 @@ -/*
-
-Copyright 1986, 1998 The Open Group
-
-Permission to use, copy, modify, distribute, and sell this software and its
-documentation for any purpose is hereby granted without fee, provided that
-the above copyright notice appear in all copies and that both that
-copyright notice and this permission notice appear in supporting
-documentation.
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
-AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-Except as contained in this notice, the name of The Open Group shall not be
-used in advertising or otherwise to promote the sale, use or other dealings
-in this Software without prior written authorization from The Open Group.
-
-*/
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#include "Xlibint.h"
-#include "Xutil.h"
-#include <stdio.h>
-#include "Cr.h"
-#include "ImUtil.h"
-
-#if defined(__STDC__) && ((defined(sun) && defined(SVR4)) || defined(WIN32))
-#define RConst /**/
-#else
-#define RConst const
-#endif
-
-#if defined(Lynx) && defined(ROUNDUP)
-#undef ROUNDUP
-#endif
-
-/* assumes pad is a power of 2 */
-#define ROUNDUP(nbytes, pad) (((nbytes) + ((pad) - 1)) & ~(long)((pad) - 1))
-
-static unsigned char const _reverse_byte[0x100] = {
- 0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
- 0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
- 0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
- 0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
- 0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4,
- 0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
- 0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec,
- 0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
- 0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2,
- 0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2,
- 0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea,
- 0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
- 0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6,
- 0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6,
- 0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee,
- 0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe,
- 0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1,
- 0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1,
- 0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9,
- 0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9,
- 0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5,
- 0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5,
- 0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed,
- 0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd,
- 0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3,
- 0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3,
- 0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb,
- 0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb,
- 0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7,
- 0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7,
- 0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef,
- 0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff
-};
-
-static unsigned char const _reverse_nibs[0x100] = {
- 0x00, 0x10, 0x20, 0x30, 0x40, 0x50, 0x60, 0x70,
- 0x80, 0x90, 0xa0, 0xb0, 0xc0, 0xd0, 0xe0, 0xf0,
- 0x01, 0x11, 0x21, 0x31, 0x41, 0x51, 0x61, 0x71,
- 0x81, 0x91, 0xa1, 0xb1, 0xc1, 0xd1, 0xe1, 0xf1,
- 0x02, 0x12, 0x22, 0x32, 0x42, 0x52, 0x62, 0x72,
- 0x82, 0x92, 0xa2, 0xb2, 0xc2, 0xd2, 0xe2, 0xf2,
- 0x03, 0x13, 0x23, 0x33, 0x43, 0x53, 0x63, 0x73,
- 0x83, 0x93, 0xa3, 0xb3, 0xc3, 0xd3, 0xe3, 0xf3,
- 0x04, 0x14, 0x24, 0x34, 0x44, 0x54, 0x64, 0x74,
- 0x84, 0x94, 0xa4, 0xb4, 0xc4, 0xd4, 0xe4, 0xf4,
- 0x05, 0x15, 0x25, 0x35, 0x45, 0x55, 0x65, 0x75,
- 0x85, 0x95, 0xa5, 0xb5, 0xc5, 0xd5, 0xe5, 0xf5,
- 0x06, 0x16, 0x26, 0x36, 0x46, 0x56, 0x66, 0x76,
- 0x86, 0x96, 0xa6, 0xb6, 0xc6, 0xd6, 0xe6, 0xf6,
- 0x07, 0x17, 0x27, 0x37, 0x47, 0x57, 0x67, 0x77,
- 0x87, 0x97, 0xa7, 0xb7, 0xc7, 0xd7, 0xe7, 0xf7,
- 0x08, 0x18, 0x28, 0x38, 0x48, 0x58, 0x68, 0x78,
- 0x88, 0x98, 0xa8, 0xb8, 0xc8, 0xd8, 0xe8, 0xf8,
- 0x09, 0x19, 0x29, 0x39, 0x49, 0x59, 0x69, 0x79,
- 0x89, 0x99, 0xa9, 0xb9, 0xc9, 0xd9, 0xe9, 0xf9,
- 0x0a, 0x1a, 0x2a, 0x3a, 0x4a, 0x5a, 0x6a, 0x7a,
- 0x8a, 0x9a, 0xaa, 0xba, 0xca, 0xda, 0xea, 0xfa,
- 0x0b, 0x1b, 0x2b, 0x3b, 0x4b, 0x5b, 0x6b, 0x7b,
- 0x8b, 0x9b, 0xab, 0xbb, 0xcb, 0xdb, 0xeb, 0xfb,
- 0x0c, 0x1c, 0x2c, 0x3c, 0x4c, 0x5c, 0x6c, 0x7c,
- 0x8c, 0x9c, 0xac, 0xbc, 0xcc, 0xdc, 0xec, 0xfc,
- 0x0d, 0x1d, 0x2d, 0x3d, 0x4d, 0x5d, 0x6d, 0x7d,
- 0x8d, 0x9d, 0xad, 0xbd, 0xcd, 0xdd, 0xed, 0xfd,
- 0x0e, 0x1e, 0x2e, 0x3e, 0x4e, 0x5e, 0x6e, 0x7e,
- 0x8e, 0x9e, 0xae, 0xbe, 0xce, 0xde, 0xee, 0xfe,
- 0x0f, 0x1f, 0x2f, 0x3f, 0x4f, 0x5f, 0x6f, 0x7f,
- 0x8f, 0x9f, 0xaf, 0xbf, 0xcf, 0xdf, 0xef, 0xff
-};
-
-int
-_XReverse_Bytes(
- register unsigned char *bpt,
- register int nb)
-{
- do {
- *bpt = _reverse_byte[*bpt];
- bpt++;
- } while (--nb > 0);
- return 0;
-}
-
-
-/* XXX the following functions are declared int instead of void because various
- * compilers and lints complain about later initialization of SwapFunc and/or
- * (swapfunc == NoSwap) when void is used.
- */
-
-/*ARGSUSED*/
-static void
-NoSwap (
- register unsigned char *src,
- register unsigned char *dest,
- long srclen,
- long srcinc,
- long destinc,
- unsigned int height,
- int half_order)
-{
- long h = height;
-
- if (srcinc == destinc)
- memcpy((char *)dest, (char *)src, (int)(srcinc * (h - 1) + srclen));
- else
- for (; --h >= 0; src += srcinc, dest += destinc)
- memcpy((char *)dest, (char *)src, (int)srclen);
-}
-
-static void
-SwapTwoBytes (
- register unsigned char *src,
- register unsigned char *dest,
- long srclen, long srcinc, long destinc,
- unsigned int height,
- int half_order)
-{
- long length = ROUNDUP(srclen, 2);
- register long h, n;
-
- srcinc -= length;
- destinc -= length;
- for (h = height; --h >= 0; src += srcinc, dest += destinc) {
- if ((h == 0) && (srclen != length)) {
- length -= 2;
- if (half_order == MSBFirst)
- *(dest + length) = *(src + length + 1);
- else
- *(dest + length + 1) = *(src + length);
- }
- for (n = length; n > 0; n -= 2, src += 2) {
- *dest++ = *(src + 1);
- *dest++ = *src;
- }
- }
-}
-
-static void
-SwapThreeBytes (
- register unsigned char *src,
- register unsigned char *dest,
- long srclen, long srcinc, long destinc,
- unsigned int height,
- int byte_order)
-{
- long length = ((srclen + 2) / 3) * 3;
- register long h, n;
-
- srcinc -= length;
- destinc -= length;
- for (h = height; --h >= 0; src += srcinc, dest += destinc) {
- if ((h == 0) && (srclen != length)) {
- length -= 3;
- if ((srclen - length) == 2)
- *(dest + length + 1) = *(src + length + 1);
- if (byte_order == MSBFirst)
- *(dest + length) = *(src + length + 2);
- else
- *(dest + length + 2) = *(src + length);
- }
- for (n = length; n > 0; n -= 3, src += 3) {
- *dest++ = *(src + 2);
- *dest++ = *(src + 1);
- *dest++ = *src;
- }
- }
-}
-
-static void
-SwapFourBytes (
- register unsigned char *src,
- register unsigned char *dest,
- long srclen, long srcinc, long destinc,
- unsigned int height,
- int half_order)
-{
- long length = ROUNDUP(srclen, 4);
- register long h, n;
-
- srcinc -= length;
- destinc -= length;
- for (h = height; --h >= 0; src += srcinc, dest += destinc) {
- if ((h == 0) && (srclen != length)) {
- length -= 4;
- if (half_order == MSBFirst)
- *(dest + length) = *(src + length + 3);
- if (((half_order == LSBFirst) && ((srclen - length) == 3)) ||
- ((half_order == MSBFirst) && (srclen & 2)))
- *(dest + length + 1) = *(src + length + 2);
- if (((half_order == MSBFirst) && ((srclen - length) == 3)) ||
- ((half_order == LSBFirst) && (srclen & 2)))
- *(dest + length + 2) = *(src + length + 1);
- if (half_order == LSBFirst)
- *(dest + length + 3) = *(src + length);
- }
- for (n = length; n > 0; n -= 4, src += 4) {
- *dest++ = *(src + 3);
- *dest++ = *(src + 2);
- *dest++ = *(src + 1);
- *dest++ = *src;
- }
- }
-}
-
-static void
-SwapWords (
- register unsigned char *src,
- register unsigned char *dest,
- long srclen, long srcinc, long destinc,
- unsigned int height,
- int half_order)
-{
- long length = ROUNDUP(srclen, 4);
- register long h, n;
-
- srcinc -= length;
- destinc -= length;
- for (h = height; --h >= 0; src += srcinc, dest += destinc) {
- if ((h == 0) && (srclen != length)) {
- length -= 4;
- if (half_order == MSBFirst)
- *(dest + length + 1) = *(src + length + 3);
- if (((half_order == LSBFirst) && ((srclen - length) == 3)) ||
- ((half_order == MSBFirst) && (srclen & 2)))
- *(dest + length) = *(src + length + 2);
- if (((half_order == MSBFirst) && ((srclen - length) == 3)) ||
- ((half_order == LSBFirst) && (srclen & 2)))
- *(dest + length + 3) = *(src + length + 1);
- if (half_order == LSBFirst)
- *(dest + length + 2) = *(src + length);
- }
- for (n = length; n > 0; n -= 4, src += 2) {
- *dest++ = *(src + 2);
- *dest++ = *(src + 3);
- *dest++ = *src++;
- *dest++ = *src++;
- }
- }
-}
-
-static void
-SwapNibbles(
- register unsigned char *src,
- register unsigned char *dest,
- long srclen, long srcinc, long destinc,
- unsigned int height)
-{
- register long h, n;
- register const unsigned char *rev = _reverse_nibs;
-
- srcinc -= srclen;
- destinc -= srclen;
- for (h = height; --h >= 0; src += srcinc, dest += destinc)
- for (n = srclen; --n >= 0; )
- *dest++ = rev[*src++];
-}
-
-static void
-ShiftNibblesLeft (
- register unsigned char *src,
- register unsigned char *dest,
- long srclen, long srcinc, long destinc,
- unsigned int height,
- int nibble_order)
-{
- register long h, n;
- register unsigned char c1, c2;
-
- srcinc -= srclen;
- destinc -= srclen;
- if (nibble_order == MSBFirst) {
- for (h = height; --h >= 0; src += srcinc, dest += destinc)
- for (n = srclen; --n >= 0; ) {
- c1 = *src++;
- c2 = *src;
- *dest++ = ((c1 & 0x0f) << 4) | ((c2 & (unsigned)0xf0) >> 4);
- }
- } else {
- for (h = height; --h >= 0; src += srcinc, dest += destinc)
- for (n = srclen; --n >= 0; ) {
- c1 = *src++;
- c2 = *src;
- *dest++ = ((c2 & 0x0f) << 4) | ((c1 & (unsigned)0xf0) >> 4);
- }
- }
-}
-
-/*ARGSUSED*/
-static void
-SwapBits(
- register unsigned char *src,
- register unsigned char *dest,
- long srclen, long srcinc, long destinc,
- unsigned int height,
- int half_order)
-{
- register long h, n;
- register const unsigned char *rev = _reverse_byte;
-
- srcinc -= srclen;
- destinc -= srclen;
- for (h = height; --h >= 0; src += srcinc, dest += destinc)
- for (n = srclen; --n >= 0; )
- *dest++ = rev[*src++];
-}
-
-static void
-SwapBitsAndTwoBytes(
- register unsigned char *src,
- register unsigned char *dest,
- long srclen, long srcinc, long destinc,
- unsigned int height,
- int half_order)
-{
- long length = ROUNDUP(srclen, 2);
- register long h, n;
- register const unsigned char *rev = _reverse_byte;
-
- srcinc -= length;
- destinc -= length;
- for (h = height; --h >= 0; src += srcinc, dest += destinc) {
- if ((h == 0) && (srclen != length)) {
- length -= 2;
- if (half_order == MSBFirst)
- *(dest + length) = rev[*(src + length + 1)];
- else
- *(dest + length + 1) = rev[*(src + length)];
- }
- for (n = length; n > 0; n -= 2, src += 2) {
- *dest++ = rev[*(src + 1)];
- *dest++ = rev[*src];
- }
- }
-}
-
-static void
-SwapBitsAndFourBytes(
- register unsigned char *src,
- register unsigned char *dest,
- long srclen, long srcinc, long destinc,
- unsigned int height,
- int half_order)
-{
- long length = ROUNDUP(srclen, 4);
- register long h, n;
- register const unsigned char *rev = _reverse_byte;
-
- srcinc -= length;
- destinc -= length;
- for (h = height; --h >= 0; src += srcinc, dest += destinc) {
- if ((h == 0) && (srclen != length)) {
- length -= 4;
- if (half_order == MSBFirst)
- *(dest + length) = rev[*(src + length + 3)];
- if (((half_order == LSBFirst) && ((srclen - length) == 3)) ||
- ((half_order == MSBFirst) && (srclen & 2)))
- *(dest + length + 1) = rev[*(src + length + 2)];
- if (((half_order == MSBFirst) && ((srclen - length) == 3)) ||
- ((half_order == LSBFirst) && (srclen & 2)))
- *(dest + length + 2) = rev[*(src + length + 1)];
- if (half_order == LSBFirst)
- *(dest + length + 3) = rev[*(src + length)];
- }
- for (n = length; n > 0; n -= 4, src += 4) {
- *dest++ = rev[*(src + 3)];
- *dest++ = rev[*(src + 2)];
- *dest++ = rev[*(src + 1)];
- *dest++ = rev[*src];
- }
- }
-}
-
-static void
-SwapBitsAndWords(
- register unsigned char *src,
- register unsigned char *dest,
- long srclen, long srcinc, long destinc,
- unsigned int height,
- int half_order)
-{
- long length = ROUNDUP(srclen, 4);
- register long h, n;
- register const unsigned char *rev = _reverse_byte;
-
- srcinc -= length;
- destinc -= length;
- for (h = height; --h >= 0; src += srcinc, dest += destinc) {
- if ((h == 0) && (srclen != length)) {
- length -= 4;
- if (half_order == MSBFirst)
- *(dest + length + 1) = rev[*(src + length + 3)];
- if (((half_order == LSBFirst) && ((srclen - length) == 3)) ||
- ((half_order == MSBFirst) && (srclen & 2)))
- *(dest + length) = rev[*(src + length + 2)];
- if (((half_order == MSBFirst) && ((srclen - length) == 3)) ||
- ((half_order == LSBFirst) && (srclen & 2)))
- *(dest + length + 3) = rev[*(src + length + 1)];
- if (half_order == LSBFirst)
- *(dest + length + 2) = rev[*(src + length)];
- }
- for (n = length; n > 0; n -= 4, src += 2) {
- *dest++ = rev[*(src + 2)];
- *dest++ = rev[*(src + 3)];
- *dest++ = rev[*src++];
- *dest++ = rev[*src++];
- }
- }
-}
-
-/*
-
-The following table gives the bit ordering within bytes (when accessed
-sequentially) for a scanline containing 32 bits, with bits numbered 0 to
-31, where bit 0 should be leftmost on the display. For a given byte
-labelled A-B, A is for the most significant bit of the byte, and B is
-for the least significant bit.
-
-legend:
- 1 scanline-unit = 8
- 2 scanline-unit = 16
- 4 scanline-unit = 32
- M byte-order = MostSignificant
- L byte-order = LeastSignificant
- m bit-order = MostSignificant
- l bit-order = LeastSignificant
-
-
-format ordering
-
-1Mm 00-07 08-15 16-23 24-31
-2Mm 00-07 08-15 16-23 24-31
-4Mm 00-07 08-15 16-23 24-31
-1Ml 07-00 15-08 23-16 31-24
-2Ml 15-08 07-00 31-24 23-16
-4Ml 31-24 23-16 15-08 07-00
-1Lm 00-07 08-15 16-23 24-31
-2Lm 08-15 00-07 24-31 16-23
-4Lm 24-31 16-23 08-15 00-07
-1Ll 07-00 15-08 23-16 31-24
-2Ll 07-00 15-08 23-16 31-24
-4Ll 07-00 15-08 23-16 31-24
-
-
-The following table gives the required conversion between any two
-formats. It is based strictly on the table above. If you believe one,
-you should believe the other.
-
-legend:
- n no changes
- s reverse 8-bit units within 16-bit units
- l reverse 8-bit units within 32-bit units
- w reverse 16-bit units within 32-bit units
- R reverse bits within 8-bit units
- S s+R
- L l+R
- W w+R
-
-*/
-
-static void (* RConst (SwapFunction[12][12]))(
- register unsigned char *src,
- register unsigned char *dest,
- long srclen,
- long srcinc,
- long destinc,
- unsigned int height,
- int half_order) = {
-#define n NoSwap,
-#define s SwapTwoBytes,
-#define l SwapFourBytes,
-#define w SwapWords,
-#define R SwapBits,
-#define S SwapBitsAndTwoBytes,
-#define L SwapBitsAndFourBytes,
-#define W SwapBitsAndWords,
-
-/* 1Mm 2Mm 4Mm 1Ml 2Ml 4Ml 1Lm 2Lm 4Lm 1Ll 2Ll 4Ll */
-/* 1Mm */ { n n n R S L n s l R R R },
-/* 2Mm */ { n n n R S L n s l R R R },
-/* 4Mm */ { n n n R S L n s l R R R },
-/* 1Ml */ { R R R n s l R S L n n n },
-/* 2Ml */ { S S S s n w S R W s s s },
-/* 4Ml */ { L L L l w n L W R l l l },
-/* 1Lm */ { n n n R S L n s l R R R },
-/* 2Lm */ { s s s S R W s n w S S S },
-/* 4Lm */ { l l l L W R l w n L L L },
-/* 1Ll */ { R R R n s l R S L n n n },
-/* 2Ll */ { R R R n s l R S L n n n },
-/* 4Ll */ { R R R n s l R S L n n n }
-
-#undef n
-#undef s
-#undef l
-#undef w
-#undef R
-#undef S
-#undef L
-#undef W
-
-};
-
-/* Of course, the table above is a lie. We also need to factor in the
- * order of the source data to cope with swapping half of a unit at the
- * end of a scanline, since we are trying to avoid de-ref'ing off the
- * end of the source.
- *
- * Defines whether the first half of a unit has the first half of the data
- */
-static int const HalfOrder[12] = {
- LSBFirst, /* 1Mm */
- LSBFirst, /* 2Mm */
- LSBFirst, /* 4Mm */
- LSBFirst, /* 1Ml */
- MSBFirst, /* 2Ml */
- MSBFirst, /* 4Ml */
- LSBFirst, /* 1Lm */
- MSBFirst, /* 2Lm */
- MSBFirst, /* 4Lm */
- LSBFirst, /* 1Ll */
- LSBFirst, /* 2Ll */
- LSBFirst /* 4Ll */
- };
-
-/* Finally, for SwapWords cases, the half order depends not just on the source
- * but also on the destination scanline unit. Use of this table changes some
- * MSBFirsts to LSBFirsts that are "do not care" (because the function will be
- * NoSwap or SwapBits) in addition to changing the desired ones.
- */
-
-static int const HalfOrderWord[12] = {
- MSBFirst, /* 1Mm */
- MSBFirst, /* 2Mm */
- MSBFirst, /* 4Mm */
- MSBFirst, /* 1Ml */
- MSBFirst, /* 2Ml */
- LSBFirst, /* 4Ml */
- MSBFirst, /* 1Lm */
- MSBFirst, /* 2Lm */
- LSBFirst, /* 4Lm */
- MSBFirst, /* 1Ll */
- MSBFirst, /* 2Ll */
- MSBFirst /* 4Ll */
- };
-
-/*
- * This macro creates a value from 0 to 11 suitable for indexing
- * into the table above.
- */
-#define ComposeIndex(bitmap_unit, bitmap_bit_order, byte_order) \
- (((bitmap_unit == 32) ? 2 : ((bitmap_unit == 16) ? 1 : 0)) \
- + (((bitmap_bit_order == MSBFirst) ? 0 : 3) \
- + ((byte_order == MSBFirst) ? 0 : 6)))
-
-/* Cancel a GetReq operation, before doing _XSend or Data */
-
-#if (defined(__STDC__) && !defined(UNIXCPP)) || defined(ANSICPP)
-#define UnGetReq(name)\
- dpy->bufptr -= SIZEOF(x##name##Req);\
- dpy->request--
-#else
-#define UnGetReq(name)\
- dpy->bufptr -= SIZEOF(x/**/name/**/Req);\
- dpy->request--
-#endif
-
-static void
-SendXYImage(
- register Display *dpy,
- register xPutImageReq *req,
- register XImage *image,
- int req_xoffset, int req_yoffset)
-{
- register int j;
- long total_xoffset, bytes_per_src, bytes_per_dest, length;
- long bytes_per_line, bytes_per_src_plane, bytes_per_dest_plane;
- char *src, *dest, *buf;
- char *extra = (char *)NULL;
- register void (*swapfunc)(
- register unsigned char *src,
- register unsigned char *dest,
- long srclen,
- long srcinc,
- long destinc,
- unsigned int height,
- int half_order);
- int half_order;
-
- total_xoffset = image->xoffset + req_xoffset;
- req->leftPad = total_xoffset & (dpy->bitmap_unit - 1);
- total_xoffset = (unsigned)(total_xoffset - req->leftPad) >> 3;
- /* The protocol requires left-pad of zero on all ZPixmap, even
- * though the 1-bit case is identical to bitmap format. This is a
- * bug in the protocol, caused because 1-bit ZPixmap was added late
- * in the game. Hairy shifting code compensation isn't worth it,
- * just use XYPixmap format instead.
- */
- if ((req->leftPad != 0) && (req->format == ZPixmap))
- req->format = XYPixmap;
- bytes_per_dest = (unsigned long)ROUNDUP((long)req->width + req->leftPad,
- dpy->bitmap_pad) >> 3;
- bytes_per_dest_plane = bytes_per_dest * req->height;
- length = bytes_per_dest_plane * image->depth;
- req->length += (length + 3) >> 2;
-
- swapfunc = SwapFunction[ComposeIndex(image->bitmap_unit,
- image->bitmap_bit_order,
- image->byte_order)]
- [ComposeIndex(dpy->bitmap_unit,
- dpy->bitmap_bit_order,
- dpy->byte_order)];
- half_order = HalfOrder[ComposeIndex(image->bitmap_unit,
- image->bitmap_bit_order,
- image->byte_order)];
- if (half_order == MSBFirst)
- half_order = HalfOrderWord[ComposeIndex(dpy->bitmap_unit,
- dpy->bitmap_bit_order,
- dpy->byte_order)];
-
- src = image->data + (image->bytes_per_line * req_yoffset) + total_xoffset;
-
- /* when total_xoffset > 0, we have to worry about stepping off the
- * end of image->data.
- */
- if ((swapfunc == NoSwap) &&
- (image->bytes_per_line == bytes_per_dest) &&
- (((total_xoffset == 0) &&
- ((image->depth == 1) || (image->height == req->height))) ||
- ((image->depth == 1) &&
- ((req_yoffset + req->height) < (unsigned)image->height)))) {
- Data(dpy, src, length);
- return;
- }
-
- length = ROUNDUP(length, 4);
- if ((dpy->bufptr + length) > dpy->bufmax) {
- if ((buf = _XAllocScratch(dpy, (unsigned long) (length))) == NULL) {
- UnGetReq(PutImage);
- return;
- }
- }
- else
- buf = dpy->bufptr;
-
- bytes_per_src = (req->width + req->leftPad + (unsigned)7) >> 3;
- bytes_per_line = image->bytes_per_line;
- bytes_per_src_plane = bytes_per_line * image->height;
- total_xoffset &= (image->bitmap_unit - 1) >> 3;
-
- if ((total_xoffset > 0) &&
- (image->byte_order != image->bitmap_bit_order)) {
- char *temp;
- long bytes_per_temp_plane, temp_length;
-
- bytes_per_line = bytes_per_src + total_xoffset;
- src -= total_xoffset;
- bytes_per_temp_plane = bytes_per_line * req->height;
- temp_length = ROUNDUP(bytes_per_temp_plane * image->depth, 4);
- if (buf == dpy->bufptr) {
- if (! (temp = _XAllocScratch(dpy, (unsigned long) temp_length))) {
- UnGetReq(PutImage);
- return;
- }
- }
- else
- if ((extra = temp = Xmalloc((unsigned) temp_length)) == NULL) {
- UnGetReq(PutImage);
- return;
- }
-
- swapfunc = SwapFunction[ComposeIndex(image->bitmap_unit,
- image->bitmap_bit_order,
- image->byte_order)]
- [ComposeIndex(image->bitmap_unit,
- dpy->byte_order,
- dpy->byte_order)];
- for (dest = temp, j = image->depth;
- --j >= 0;
- src += bytes_per_src_plane, dest += bytes_per_temp_plane)
- (*swapfunc)((unsigned char *)src, (unsigned char *)dest,
- bytes_per_line, (long)image->bytes_per_line,
- bytes_per_line, req->height, half_order);
- swapfunc = SwapFunction[ComposeIndex(image->bitmap_unit,
- dpy->byte_order,
- dpy->byte_order)]
- [ComposeIndex(dpy->bitmap_unit,
- dpy->bitmap_bit_order,
- dpy->byte_order)];
- half_order = HalfOrder[ComposeIndex(image->bitmap_unit,
- dpy->byte_order,
- dpy->byte_order)];
- src = temp + total_xoffset;
- bytes_per_src_plane = bytes_per_temp_plane;
- }
-
- for (dest = buf, j = image->depth;
- --j >= 0;
- src += bytes_per_src_plane, dest += bytes_per_dest_plane)
- (*swapfunc)((unsigned char *)src, (unsigned char *)dest,
- bytes_per_src, bytes_per_line,
- bytes_per_dest, req->height, half_order);
-
- if (extra)
- Xfree(extra);
-
- if (buf == dpy->bufptr)
- dpy->bufptr += length;
- else
- _XSend(dpy, buf, length);
- }
-
-static void
-SendZImage(
- register Display *dpy,
- register xPutImageReq *req,
- register XImage *image,
- int req_xoffset, int req_yoffset,
- int dest_bits_per_pixel, int dest_scanline_pad)
-{
- long bytes_per_src, bytes_per_dest, length;
- unsigned char *src, *dest;
- unsigned char *shifted_src = NULL;
-
- req->leftPad = 0;
- bytes_per_src = ROUNDUP((long)req->width * image->bits_per_pixel, 8) >> 3;
- bytes_per_dest = ROUNDUP((long)req->width * dest_bits_per_pixel,
- dest_scanline_pad) >> 3;
- length = bytes_per_dest * req->height;
- req->length += (length + 3) >> 2;
-
- src = (unsigned char *)image->data +
- (req_yoffset * image->bytes_per_line) +
- ((req_xoffset * image->bits_per_pixel) >> 3);
- if ((image->bits_per_pixel == 4) && ((unsigned int) req_xoffset & 0x01)) {
- if (! (shifted_src = (unsigned char *)
- Xmalloc((unsigned) (req->height * image->bytes_per_line)))) {
- UnGetReq(PutImage);
- return;
- }
-
- ShiftNibblesLeft(src, shifted_src, bytes_per_src,
- (long) image->bytes_per_line,
- (long) image->bytes_per_line, req->height,
- image->byte_order);
- src = shifted_src;
- }
-
- /* when req_xoffset > 0, we have to worry about stepping off the
- * end of image->data.
- */
- if (((image->byte_order == dpy->byte_order) ||
- (image->bits_per_pixel == 8)) &&
- ((long)image->bytes_per_line == bytes_per_dest) &&
- ((req_xoffset == 0) ||
- ((req_yoffset + req->height) < (unsigned)image->height))) {
- Data(dpy, (char *)src, length);
- if (shifted_src)
- Xfree((char *)shifted_src);
- return;
- }
-
- length = ROUNDUP(length, 4);
- if ((dpy->bufptr + length) <= dpy->bufmax)
- dest = (unsigned char *)dpy->bufptr;
- else
- if ((dest = (unsigned char *)
- _XAllocScratch(dpy, (unsigned long)(length))) == NULL) {
- if (shifted_src) Xfree((char *) shifted_src);
- UnGetReq(PutImage);
- return;
- }
-
- if ((image->byte_order == dpy->byte_order) ||
- (image->bits_per_pixel == 8))
- NoSwap(src, dest, bytes_per_src, (long)image->bytes_per_line,
- bytes_per_dest, req->height, image->byte_order);
- else if (image->bits_per_pixel == 32)
- SwapFourBytes(src, dest, bytes_per_src, (long)image->bytes_per_line,
- bytes_per_dest, req->height, image->byte_order);
- else if (image->bits_per_pixel == 24)
- SwapThreeBytes(src, dest, bytes_per_src, (long)image->bytes_per_line,
- bytes_per_dest, req->height, image->byte_order);
- else if (image->bits_per_pixel == 16)
- SwapTwoBytes(src, dest, bytes_per_src, (long)image->bytes_per_line,
- bytes_per_dest, req->height, image->byte_order);
- else
- SwapNibbles(src, dest, bytes_per_src, (long)image->bytes_per_line,
- bytes_per_dest, req->height);
-
- if (dest == (unsigned char *)dpy->bufptr)
- dpy->bufptr += length;
- else
- _XSend(dpy, (char *)dest, length);
-
- if (shifted_src)
- Xfree((char *)shifted_src);
-}
-
-static void
-PutImageRequest(
- register Display *dpy,
- Drawable d,
- GC gc,
- register XImage *image,
- int req_xoffset, int req_yoffset,
- int x, int y,
- unsigned int req_width, unsigned int req_height,
- int dest_bits_per_pixel, int dest_scanline_pad)
-{
- register xPutImageReq *req;
-
- GetReq(PutImage, req);
- req->drawable = d;
- req->gc = gc->gid;
- req->dstX = x;
- req->dstY = y;
- req->width = req_width;
- req->height = req_height;
- req->depth = image->depth;
- req->format = image->format;
- if ((image->bits_per_pixel == 1) || (image->format != ZPixmap))
- SendXYImage(dpy, req, image, req_xoffset, req_yoffset);
- else
- SendZImage(dpy, req, image, req_xoffset, req_yoffset,
- dest_bits_per_pixel, dest_scanline_pad);
-}
-
-static void
-PutSubImage (
- register Display *dpy,
- Drawable d,
- GC gc,
- register XImage *image,
- int req_xoffset,
- int req_yoffset,
- int x, int y,
- unsigned int req_width,
- unsigned int req_height,
- int dest_bits_per_pixel,
- int dest_scanline_pad)
-{
- int left_pad, BytesPerRow, Available;
-
- if ((req_width == 0) || (req_height == 0))
- return;
-
- Available = ((65536 < dpy->max_request_size) ? (65536 << 2)
- : (dpy->max_request_size << 2))
- - SIZEOF(xPutImageReq);
-
- if ((image->bits_per_pixel == 1) || (image->format != ZPixmap)) {
- left_pad = (image->xoffset + req_xoffset) & (dpy->bitmap_unit - 1);
- BytesPerRow = (ROUNDUP((long)req_width + left_pad,
- dpy->bitmap_pad) >> 3) * image->depth;
- } else {
- left_pad = 0;
- BytesPerRow = ROUNDUP((long)req_width * dest_bits_per_pixel,
- dest_scanline_pad) >> 3;
- }
-
- if ((BytesPerRow * req_height) <= Available) {
- PutImageRequest(dpy, d, gc, image, req_xoffset, req_yoffset, x, y,
- req_width, req_height,
- dest_bits_per_pixel, dest_scanline_pad);
- } else if (req_height > 1) {
- int SubImageHeight = Available / BytesPerRow;
-
- if (SubImageHeight == 0)
- SubImageHeight = 1;
-
- PutSubImage(dpy, d, gc, image, req_xoffset, req_yoffset, x, y,
- req_width, (unsigned int) SubImageHeight,
- dest_bits_per_pixel, dest_scanline_pad);
-
- PutSubImage(dpy, d, gc, image, req_xoffset,
- req_yoffset + SubImageHeight, x, y + SubImageHeight,
- req_width, req_height - SubImageHeight,
- dest_bits_per_pixel, dest_scanline_pad);
- } else {
- int SubImageWidth = (((Available << 3) / dest_scanline_pad)
- * dest_scanline_pad) - left_pad;
-
- PutSubImage(dpy, d, gc, image, req_xoffset, req_yoffset, x, y,
- (unsigned int) SubImageWidth, 1,
- dest_bits_per_pixel, dest_scanline_pad);
-
- PutSubImage(dpy, d, gc, image, req_xoffset + SubImageWidth,
- req_yoffset, x + SubImageWidth, y,
- req_width - SubImageWidth, 1,
- dest_bits_per_pixel, dest_scanline_pad);
- }
-}
-
-
-int
-XPutImage (
- register Display *dpy,
- Drawable d,
- GC gc,
- register XImage *image,
- int req_xoffset,
- int req_yoffset,
- int x,
- int y,
- unsigned int req_width,
- unsigned int req_height)
-
-{
- long width = req_width;
- long height = req_height;
- int dest_bits_per_pixel, dest_scanline_pad;
-
- if (req_xoffset < 0) {
- width += req_xoffset;
- req_xoffset = 0;
- }
- if (req_yoffset < 0) {
- height += req_yoffset;
- req_yoffset = 0;
- }
- if ((req_xoffset + width) > image->width)
- width = image->width - req_xoffset;
- if ((req_yoffset + height) > image->height)
- height = image->height - req_yoffset;
- if ((width <= 0) || (height <= 0))
- return 0;
-
- if ((image->bits_per_pixel == 1) || (image->format != ZPixmap)) {
- dest_bits_per_pixel = 1;
- dest_scanline_pad = dpy->bitmap_pad;
- } else {
- register int n;
- register ScreenFormat *format;
-
- dest_bits_per_pixel = image->bits_per_pixel;
- dest_scanline_pad = image->bitmap_pad;
- for (n = dpy->nformats, format = dpy->pixmap_format; --n >= 0; format++)
- if (format->depth == image->depth) {
- dest_bits_per_pixel = format->bits_per_pixel;
- dest_scanline_pad = format->scanline_pad;
- }
- if (dest_bits_per_pixel != image->bits_per_pixel) {
- XImage img;
- register long i, j;
- /* XXX slow, but works */
- img.width = width;
- img.height = height;
- img.xoffset = 0;
- img.format = ZPixmap;
- img.byte_order = dpy->byte_order;
- img.bitmap_unit = dpy->bitmap_unit;
- img.bitmap_bit_order = dpy->bitmap_bit_order;
- img.bitmap_pad = dest_scanline_pad;
- img.depth = image->depth;
- img.bits_per_pixel = dest_bits_per_pixel;
- img.bytes_per_line = ROUNDUP((dest_bits_per_pixel * width),
- dest_scanline_pad) >> 3;
- img.data = Xmalloc((unsigned) (img.bytes_per_line * height));
- if (img.data == NULL)
- return 0;
- _XInitImageFuncPtrs(&img);
- for (j = height; --j >= 0; )
- for (i = width; --i >= 0; )
- XPutPixel(&img, i, j, XGetPixel(image, req_xoffset + i,
- req_yoffset + j));
- LockDisplay(dpy);
- FlushGC(dpy, gc);
- PutSubImage(dpy, d, gc, &img, 0, 0, x, y,
- (unsigned int) width, (unsigned int) height,
- dest_bits_per_pixel, dest_scanline_pad);
- UnlockDisplay(dpy);
- SyncHandle();
- Xfree(img.data);
- return 0;
- }
- }
-
- LockDisplay(dpy);
- FlushGC(dpy, gc);
-
- PutSubImage(dpy, d, gc, image, req_xoffset, req_yoffset, x, y,
- (unsigned int) width, (unsigned int) height,
- dest_bits_per_pixel, dest_scanline_pad);
-
- UnlockDisplay(dpy);
- SyncHandle();
-#ifdef USE_DYNAMIC_XCURSOR
- if (image->bits_per_pixel == 1 &&
- x == 0 && y == 0 &&
- width == image->width && height == image->height &&
- gc->values.function == GXcopy &&
- (gc->values.plane_mask & 1))
- {
- _XNoticePutBitmap (dpy, d, image);
- }
-#endif
- return 0;
-}
+/* + +Copyright 1986, 1998 The Open Group + +Permission to use, copy, modify, distribute, and sell this software and its +documentation for any purpose is hereby granted without fee, provided that +the above copyright notice appear in all copies and that both that +copyright notice and this permission notice appear in supporting +documentation. + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN +AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN +CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +Except as contained in this notice, the name of The Open Group shall not be +used in advertising or otherwise to promote the sale, use or other dealings +in this Software without prior written authorization from The Open Group. + +*/ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include "Xlibint.h" +#include "Xutil.h" +#include <stdio.h> +#include "Cr.h" +#include "ImUtil.h" + +#if defined(__STDC__) && ((defined(sun) && defined(SVR4)) || defined(WIN32)) +#define RConst /**/ +#else +#define RConst const +#endif + +#if defined(Lynx) && defined(ROUNDUP) +#undef ROUNDUP +#endif + +/* assumes pad is a power of 2 */ +#define ROUNDUP(nbytes, pad) (((nbytes) + ((pad) - 1)) & ~(long)((pad) - 1)) + +static unsigned char const _reverse_byte[0x100] = { + 0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0, + 0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0, + 0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8, + 0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8, + 0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4, + 0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4, + 0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec, + 0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc, + 0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2, + 0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2, + 0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea, + 0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa, + 0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6, + 0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6, + 0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee, + 0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe, + 0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1, + 0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1, + 0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9, + 0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9, + 0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5, + 0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5, + 0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed, + 0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd, + 0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3, + 0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3, + 0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb, + 0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb, + 0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7, + 0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7, + 0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef, + 0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff +}; + +static unsigned char const _reverse_nibs[0x100] = { + 0x00, 0x10, 0x20, 0x30, 0x40, 0x50, 0x60, 0x70, + 0x80, 0x90, 0xa0, 0xb0, 0xc0, 0xd0, 0xe0, 0xf0, + 0x01, 0x11, 0x21, 0x31, 0x41, 0x51, 0x61, 0x71, + 0x81, 0x91, 0xa1, 0xb1, 0xc1, 0xd1, 0xe1, 0xf1, + 0x02, 0x12, 0x22, 0x32, 0x42, 0x52, 0x62, 0x72, + 0x82, 0x92, 0xa2, 0xb2, 0xc2, 0xd2, 0xe2, 0xf2, + 0x03, 0x13, 0x23, 0x33, 0x43, 0x53, 0x63, 0x73, + 0x83, 0x93, 0xa3, 0xb3, 0xc3, 0xd3, 0xe3, 0xf3, + 0x04, 0x14, 0x24, 0x34, 0x44, 0x54, 0x64, 0x74, + 0x84, 0x94, 0xa4, 0xb4, 0xc4, 0xd4, 0xe4, 0xf4, + 0x05, 0x15, 0x25, 0x35, 0x45, 0x55, 0x65, 0x75, + 0x85, 0x95, 0xa5, 0xb5, 0xc5, 0xd5, 0xe5, 0xf5, + 0x06, 0x16, 0x26, 0x36, 0x46, 0x56, 0x66, 0x76, + 0x86, 0x96, 0xa6, 0xb6, 0xc6, 0xd6, 0xe6, 0xf6, + 0x07, 0x17, 0x27, 0x37, 0x47, 0x57, 0x67, 0x77, + 0x87, 0x97, 0xa7, 0xb7, 0xc7, 0xd7, 0xe7, 0xf7, + 0x08, 0x18, 0x28, 0x38, 0x48, 0x58, 0x68, 0x78, + 0x88, 0x98, 0xa8, 0xb8, 0xc8, 0xd8, 0xe8, 0xf8, + 0x09, 0x19, 0x29, 0x39, 0x49, 0x59, 0x69, 0x79, + 0x89, 0x99, 0xa9, 0xb9, 0xc9, 0xd9, 0xe9, 0xf9, + 0x0a, 0x1a, 0x2a, 0x3a, 0x4a, 0x5a, 0x6a, 0x7a, + 0x8a, 0x9a, 0xaa, 0xba, 0xca, 0xda, 0xea, 0xfa, + 0x0b, 0x1b, 0x2b, 0x3b, 0x4b, 0x5b, 0x6b, 0x7b, + 0x8b, 0x9b, 0xab, 0xbb, 0xcb, 0xdb, 0xeb, 0xfb, + 0x0c, 0x1c, 0x2c, 0x3c, 0x4c, 0x5c, 0x6c, 0x7c, + 0x8c, 0x9c, 0xac, 0xbc, 0xcc, 0xdc, 0xec, 0xfc, + 0x0d, 0x1d, 0x2d, 0x3d, 0x4d, 0x5d, 0x6d, 0x7d, + 0x8d, 0x9d, 0xad, 0xbd, 0xcd, 0xdd, 0xed, 0xfd, + 0x0e, 0x1e, 0x2e, 0x3e, 0x4e, 0x5e, 0x6e, 0x7e, + 0x8e, 0x9e, 0xae, 0xbe, 0xce, 0xde, 0xee, 0xfe, + 0x0f, 0x1f, 0x2f, 0x3f, 0x4f, 0x5f, 0x6f, 0x7f, + 0x8f, 0x9f, 0xaf, 0xbf, 0xcf, 0xdf, 0xef, 0xff +}; + +int +_XReverse_Bytes( + register unsigned char *bpt, + register int nb) +{ + do { + *bpt = _reverse_byte[*bpt]; + bpt++; + } while (--nb > 0); + return 0; +} + + +/* XXX the following functions are declared int instead of void because various + * compilers and lints complain about later initialization of SwapFunc and/or + * (swapfunc == NoSwap) when void is used. + */ + +/*ARGSUSED*/ +static void +NoSwap ( + register unsigned char *src, + register unsigned char *dest, + long srclen, + long srcinc, + long destinc, + unsigned int height, + int half_order) +{ + long h = height; + + if (srcinc == destinc) + memcpy((char *)dest, (char *)src, (int)(srcinc * (h - 1) + srclen)); + else + for (; --h >= 0; src += srcinc, dest += destinc) + memcpy((char *)dest, (char *)src, (int)srclen); +} + +static void +SwapTwoBytes ( + register unsigned char *src, + register unsigned char *dest, + long srclen, long srcinc, long destinc, + unsigned int height, + int half_order) +{ + long length = ROUNDUP(srclen, 2); + register long h, n; + + srcinc -= length; + destinc -= length; + for (h = height; --h >= 0; src += srcinc, dest += destinc) { + if ((h == 0) && (srclen != length)) { + length -= 2; + if (half_order == MSBFirst) + *(dest + length) = *(src + length + 1); + else + *(dest + length + 1) = *(src + length); + } + for (n = length; n > 0; n -= 2, src += 2) { + *dest++ = *(src + 1); + *dest++ = *src; + } + } +} + +static void +SwapThreeBytes ( + register unsigned char *src, + register unsigned char *dest, + long srclen, long srcinc, long destinc, + unsigned int height, + int byte_order) +{ + long length = ((srclen + 2) / 3) * 3; + register long h, n; + + srcinc -= length; + destinc -= length; + for (h = height; --h >= 0; src += srcinc, dest += destinc) { + if ((h == 0) && (srclen != length)) { + length -= 3; + if ((srclen - length) == 2) + *(dest + length + 1) = *(src + length + 1); + if (byte_order == MSBFirst) + *(dest + length) = *(src + length + 2); + else + *(dest + length + 2) = *(src + length); + } + for (n = length; n > 0; n -= 3, src += 3) { + *dest++ = *(src + 2); + *dest++ = *(src + 1); + *dest++ = *src; + } + } +} + +static void +SwapFourBytes ( + register unsigned char *src, + register unsigned char *dest, + long srclen, long srcinc, long destinc, + unsigned int height, + int half_order) +{ + long length = ROUNDUP(srclen, 4); + register long h, n; + + srcinc -= length; + destinc -= length; + for (h = height; --h >= 0; src += srcinc, dest += destinc) { + if ((h == 0) && (srclen != length)) { + length -= 4; + if (half_order == MSBFirst) + *(dest + length) = *(src + length + 3); + if (((half_order == LSBFirst) && ((srclen - length) == 3)) || + ((half_order == MSBFirst) && (srclen & 2))) + *(dest + length + 1) = *(src + length + 2); + if (((half_order == MSBFirst) && ((srclen - length) == 3)) || + ((half_order == LSBFirst) && (srclen & 2))) + *(dest + length + 2) = *(src + length + 1); + if (half_order == LSBFirst) + *(dest + length + 3) = *(src + length); + } + for (n = length; n > 0; n -= 4, src += 4) { + *dest++ = *(src + 3); + *dest++ = *(src + 2); + *dest++ = *(src + 1); + *dest++ = *src; + } + } +} + +static void +SwapWords ( + register unsigned char *src, + register unsigned char *dest, + long srclen, long srcinc, long destinc, + unsigned int height, + int half_order) +{ + long length = ROUNDUP(srclen, 4); + register long h, n; + + srcinc -= length; + destinc -= length; + for (h = height; --h >= 0; src += srcinc, dest += destinc) { + if ((h == 0) && (srclen != length)) { + length -= 4; + if (half_order == MSBFirst) + *(dest + length + 1) = *(src + length + 3); + if (((half_order == LSBFirst) && ((srclen - length) == 3)) || + ((half_order == MSBFirst) && (srclen & 2))) + *(dest + length) = *(src + length + 2); + if (((half_order == MSBFirst) && ((srclen - length) == 3)) || + ((half_order == LSBFirst) && (srclen & 2))) + *(dest + length + 3) = *(src + length + 1); + if (half_order == LSBFirst) + *(dest + length + 2) = *(src + length); + } + for (n = length; n > 0; n -= 4, src += 2) { + *dest++ = *(src + 2); + *dest++ = *(src + 3); + *dest++ = *src++; + *dest++ = *src++; + } + } +} + +static void +SwapNibbles( + register unsigned char *src, + register unsigned char *dest, + long srclen, long srcinc, long destinc, + unsigned int height) +{ + register long h, n; + register const unsigned char *rev = _reverse_nibs; + + srcinc -= srclen; + destinc -= srclen; + for (h = height; --h >= 0; src += srcinc, dest += destinc) + for (n = srclen; --n >= 0; ) + *dest++ = rev[*src++]; +} + +static void +ShiftNibblesLeft ( + register unsigned char *src, + register unsigned char *dest, + long srclen, long srcinc, long destinc, + unsigned int height, + int nibble_order) +{ + register long h, n; + register unsigned char c1, c2; + + srcinc -= srclen; + destinc -= srclen; + if (nibble_order == MSBFirst) { + for (h = height; --h >= 0; src += srcinc, dest += destinc) + for (n = srclen; --n >= 0; ) { + c1 = *src++; + c2 = *src; + *dest++ = ((c1 & 0x0f) << 4) | ((c2 & (unsigned)0xf0) >> 4); + } + } else { + for (h = height; --h >= 0; src += srcinc, dest += destinc) + for (n = srclen; --n >= 0; ) { + c1 = *src++; + c2 = *src; + *dest++ = ((c2 & 0x0f) << 4) | ((c1 & (unsigned)0xf0) >> 4); + } + } +} + +/*ARGSUSED*/ +static void +SwapBits( + register unsigned char *src, + register unsigned char *dest, + long srclen, long srcinc, long destinc, + unsigned int height, + int half_order) +{ + register long h, n; + register const unsigned char *rev = _reverse_byte; + + srcinc -= srclen; + destinc -= srclen; + for (h = height; --h >= 0; src += srcinc, dest += destinc) + for (n = srclen; --n >= 0; ) + *dest++ = rev[*src++]; +} + +static void +SwapBitsAndTwoBytes( + register unsigned char *src, + register unsigned char *dest, + long srclen, long srcinc, long destinc, + unsigned int height, + int half_order) +{ + long length = ROUNDUP(srclen, 2); + register long h, n; + register const unsigned char *rev = _reverse_byte; + + srcinc -= length; + destinc -= length; + for (h = height; --h >= 0; src += srcinc, dest += destinc) { + if ((h == 0) && (srclen != length)) { + length -= 2; + if (half_order == MSBFirst) + *(dest + length) = rev[*(src + length + 1)]; + else + *(dest + length + 1) = rev[*(src + length)]; + } + for (n = length; n > 0; n -= 2, src += 2) { + *dest++ = rev[*(src + 1)]; + *dest++ = rev[*src]; + } + } +} + +static void +SwapBitsAndFourBytes( + register unsigned char *src, + register unsigned char *dest, + long srclen, long srcinc, long destinc, + unsigned int height, + int half_order) +{ + long length = ROUNDUP(srclen, 4); + register long h, n; + register const unsigned char *rev = _reverse_byte; + + srcinc -= length; + destinc -= length; + for (h = height; --h >= 0; src += srcinc, dest += destinc) { + if ((h == 0) && (srclen != length)) { + length -= 4; + if (half_order == MSBFirst) + *(dest + length) = rev[*(src + length + 3)]; + if (((half_order == LSBFirst) && ((srclen - length) == 3)) || + ((half_order == MSBFirst) && (srclen & 2))) + *(dest + length + 1) = rev[*(src + length + 2)]; + if (((half_order == MSBFirst) && ((srclen - length) == 3)) || + ((half_order == LSBFirst) && (srclen & 2))) + *(dest + length + 2) = rev[*(src + length + 1)]; + if (half_order == LSBFirst) + *(dest + length + 3) = rev[*(src + length)]; + } + for (n = length; n > 0; n -= 4, src += 4) { + *dest++ = rev[*(src + 3)]; + *dest++ = rev[*(src + 2)]; + *dest++ = rev[*(src + 1)]; + *dest++ = rev[*src]; + } + } +} + +static void +SwapBitsAndWords( + register unsigned char *src, + register unsigned char *dest, + long srclen, long srcinc, long destinc, + unsigned int height, + int half_order) +{ + long length = ROUNDUP(srclen, 4); + register long h, n; + register const unsigned char *rev = _reverse_byte; + + srcinc -= length; + destinc -= length; + for (h = height; --h >= 0; src += srcinc, dest += destinc) { + if ((h == 0) && (srclen != length)) { + length -= 4; + if (half_order == MSBFirst) + *(dest + length + 1) = rev[*(src + length + 3)]; + if (((half_order == LSBFirst) && ((srclen - length) == 3)) || + ((half_order == MSBFirst) && (srclen & 2))) + *(dest + length) = rev[*(src + length + 2)]; + if (((half_order == MSBFirst) && ((srclen - length) == 3)) || + ((half_order == LSBFirst) && (srclen & 2))) + *(dest + length + 3) = rev[*(src + length + 1)]; + if (half_order == LSBFirst) + *(dest + length + 2) = rev[*(src + length)]; + } + for (n = length; n > 0; n -= 4, src += 2) { + *dest++ = rev[*(src + 2)]; + *dest++ = rev[*(src + 3)]; + *dest++ = rev[*src++]; + *dest++ = rev[*src++]; + } + } +} + +/* + +The following table gives the bit ordering within bytes (when accessed +sequentially) for a scanline containing 32 bits, with bits numbered 0 to +31, where bit 0 should be leftmost on the display. For a given byte +labelled A-B, A is for the most significant bit of the byte, and B is +for the least significant bit. + +legend: + 1 scanline-unit = 8 + 2 scanline-unit = 16 + 4 scanline-unit = 32 + M byte-order = MostSignificant + L byte-order = LeastSignificant + m bit-order = MostSignificant + l bit-order = LeastSignificant + + +format ordering + +1Mm 00-07 08-15 16-23 24-31 +2Mm 00-07 08-15 16-23 24-31 +4Mm 00-07 08-15 16-23 24-31 +1Ml 07-00 15-08 23-16 31-24 +2Ml 15-08 07-00 31-24 23-16 +4Ml 31-24 23-16 15-08 07-00 +1Lm 00-07 08-15 16-23 24-31 +2Lm 08-15 00-07 24-31 16-23 +4Lm 24-31 16-23 08-15 00-07 +1Ll 07-00 15-08 23-16 31-24 +2Ll 07-00 15-08 23-16 31-24 +4Ll 07-00 15-08 23-16 31-24 + + +The following table gives the required conversion between any two +formats. It is based strictly on the table above. If you believe one, +you should believe the other. + +legend: + n no changes + s reverse 8-bit units within 16-bit units + l reverse 8-bit units within 32-bit units + w reverse 16-bit units within 32-bit units + R reverse bits within 8-bit units + S s+R + L l+R + W w+R + +*/ + +static void (* RConst (SwapFunction[12][12]))( + register unsigned char *src, + register unsigned char *dest, + long srclen, + long srcinc, + long destinc, + unsigned int height, + int half_order) = { +#define n NoSwap, +#define s SwapTwoBytes, +#define l SwapFourBytes, +#define w SwapWords, +#define R SwapBits, +#define S SwapBitsAndTwoBytes, +#define L SwapBitsAndFourBytes, +#define W SwapBitsAndWords, + +/* 1Mm 2Mm 4Mm 1Ml 2Ml 4Ml 1Lm 2Lm 4Lm 1Ll 2Ll 4Ll */ +/* 1Mm */ { n n n R S L n s l R R R }, +/* 2Mm */ { n n n R S L n s l R R R }, +/* 4Mm */ { n n n R S L n s l R R R }, +/* 1Ml */ { R R R n s l R S L n n n }, +/* 2Ml */ { S S S s n w S R W s s s }, +/* 4Ml */ { L L L l w n L W R l l l }, +/* 1Lm */ { n n n R S L n s l R R R }, +/* 2Lm */ { s s s S R W s n w S S S }, +/* 4Lm */ { l l l L W R l w n L L L }, +/* 1Ll */ { R R R n s l R S L n n n }, +/* 2Ll */ { R R R n s l R S L n n n }, +/* 4Ll */ { R R R n s l R S L n n n } + +#undef n +#undef s +#undef l +#undef w +#undef R +#undef S +#undef L +#undef W + +}; + +/* Of course, the table above is a lie. We also need to factor in the + * order of the source data to cope with swapping half of a unit at the + * end of a scanline, since we are trying to avoid de-ref'ing off the + * end of the source. + * + * Defines whether the first half of a unit has the first half of the data + */ +static int const HalfOrder[12] = { + LSBFirst, /* 1Mm */ + LSBFirst, /* 2Mm */ + LSBFirst, /* 4Mm */ + LSBFirst, /* 1Ml */ + MSBFirst, /* 2Ml */ + MSBFirst, /* 4Ml */ + LSBFirst, /* 1Lm */ + MSBFirst, /* 2Lm */ + MSBFirst, /* 4Lm */ + LSBFirst, /* 1Ll */ + LSBFirst, /* 2Ll */ + LSBFirst /* 4Ll */ + }; + +/* Finally, for SwapWords cases, the half order depends not just on the source + * but also on the destination scanline unit. Use of this table changes some + * MSBFirsts to LSBFirsts that are "do not care" (because the function will be + * NoSwap or SwapBits) in addition to changing the desired ones. + */ + +static int const HalfOrderWord[12] = { + MSBFirst, /* 1Mm */ + MSBFirst, /* 2Mm */ + MSBFirst, /* 4Mm */ + MSBFirst, /* 1Ml */ + MSBFirst, /* 2Ml */ + LSBFirst, /* 4Ml */ + MSBFirst, /* 1Lm */ + MSBFirst, /* 2Lm */ + LSBFirst, /* 4Lm */ + MSBFirst, /* 1Ll */ + MSBFirst, /* 2Ll */ + MSBFirst /* 4Ll */ + }; + +/* + * This macro creates a value from 0 to 11 suitable for indexing + * into the table above. + */ +#define ComposeIndex(bitmap_unit, bitmap_bit_order, byte_order) \ + (((bitmap_unit == 32) ? 2 : ((bitmap_unit == 16) ? 1 : 0)) \ + + (((bitmap_bit_order == MSBFirst) ? 0 : 3) \ + + ((byte_order == MSBFirst) ? 0 : 6))) + +/* Cancel a GetReq operation, before doing _XSend or Data */ + +#if (defined(__STDC__) && !defined(UNIXCPP)) || defined(ANSICPP) +#define UnGetReq(name)\ + dpy->bufptr -= SIZEOF(x##name##Req);\ + dpy->request-- +#else +#define UnGetReq(name)\ + dpy->bufptr -= SIZEOF(x/**/name/**/Req);\ + dpy->request-- +#endif + +static void +SendXYImage( + register Display *dpy, + register xPutImageReq *req, + register XImage *image, + int req_xoffset, int req_yoffset) +{ + register int j; + long total_xoffset, bytes_per_src, bytes_per_dest, length; + long bytes_per_line, bytes_per_src_plane, bytes_per_dest_plane; + char *src, *dest, *buf; + char *extra = (char *)NULL; + register void (*swapfunc)( + register unsigned char *src, + register unsigned char *dest, + long srclen, + long srcinc, + long destinc, + unsigned int height, + int half_order); + int half_order; + + total_xoffset = image->xoffset + req_xoffset; + req->leftPad = total_xoffset & (dpy->bitmap_unit - 1); + total_xoffset = (unsigned)(total_xoffset - req->leftPad) >> 3; + /* The protocol requires left-pad of zero on all ZPixmap, even + * though the 1-bit case is identical to bitmap format. This is a + * bug in the protocol, caused because 1-bit ZPixmap was added late + * in the game. Hairy shifting code compensation isn't worth it, + * just use XYPixmap format instead. + */ + if ((req->leftPad != 0) && (req->format == ZPixmap)) + req->format = XYPixmap; + bytes_per_dest = (unsigned long)ROUNDUP((long)req->width + req->leftPad, + dpy->bitmap_pad) >> 3; + bytes_per_dest_plane = bytes_per_dest * req->height; + length = bytes_per_dest_plane * image->depth; + req->length += (length + 3) >> 2; + + swapfunc = SwapFunction[ComposeIndex(image->bitmap_unit, + image->bitmap_bit_order, + image->byte_order)] + [ComposeIndex(dpy->bitmap_unit, + dpy->bitmap_bit_order, + dpy->byte_order)]; + half_order = HalfOrder[ComposeIndex(image->bitmap_unit, + image->bitmap_bit_order, + image->byte_order)]; + if (half_order == MSBFirst) + half_order = HalfOrderWord[ComposeIndex(dpy->bitmap_unit, + dpy->bitmap_bit_order, + dpy->byte_order)]; + + src = image->data + (image->bytes_per_line * req_yoffset) + total_xoffset; + + /* when total_xoffset > 0, we have to worry about stepping off the + * end of image->data. + */ + if ((swapfunc == NoSwap) && + (image->bytes_per_line == bytes_per_dest) && + (((total_xoffset == 0) && + ((image->depth == 1) || (image->height == req->height))) || + ((image->depth == 1) && + ((req_yoffset + req->height) < (unsigned)image->height)))) { + Data(dpy, src, length); + return; + } + + length = ROUNDUP(length, 4); + if ((dpy->bufptr + length) > dpy->bufmax) { + if ((buf = _XAllocScratch(dpy, (unsigned long) (length))) == NULL) { + UnGetReq(PutImage); + return; + } + } + else + buf = dpy->bufptr; + + bytes_per_src = (req->width + req->leftPad + (unsigned)7) >> 3; + bytes_per_line = image->bytes_per_line; + bytes_per_src_plane = bytes_per_line * image->height; + total_xoffset &= (image->bitmap_unit - 1) >> 3; + + if ((total_xoffset > 0) && + (image->byte_order != image->bitmap_bit_order)) { + char *temp; + long bytes_per_temp_plane, temp_length; + + bytes_per_line = bytes_per_src + total_xoffset; + src -= total_xoffset; + bytes_per_temp_plane = bytes_per_line * req->height; + temp_length = ROUNDUP(bytes_per_temp_plane * image->depth, 4); + if (buf == dpy->bufptr) { + if (! (temp = _XAllocScratch(dpy, (unsigned long) temp_length))) { + UnGetReq(PutImage); + return; + } + } + else + if ((extra = temp = Xmalloc((unsigned) temp_length)) == NULL) { + UnGetReq(PutImage); + return; + } + + swapfunc = SwapFunction[ComposeIndex(image->bitmap_unit, + image->bitmap_bit_order, + image->byte_order)] + [ComposeIndex(image->bitmap_unit, + dpy->byte_order, + dpy->byte_order)]; + for (dest = temp, j = image->depth; + --j >= 0; + src += bytes_per_src_plane, dest += bytes_per_temp_plane) + (*swapfunc)((unsigned char *)src, (unsigned char *)dest, + bytes_per_line, (long)image->bytes_per_line, + bytes_per_line, req->height, half_order); + swapfunc = SwapFunction[ComposeIndex(image->bitmap_unit, + dpy->byte_order, + dpy->byte_order)] + [ComposeIndex(dpy->bitmap_unit, + dpy->bitmap_bit_order, + dpy->byte_order)]; + half_order = HalfOrder[ComposeIndex(image->bitmap_unit, + dpy->byte_order, + dpy->byte_order)]; + src = temp + total_xoffset; + bytes_per_src_plane = bytes_per_temp_plane; + } + + for (dest = buf, j = image->depth; + --j >= 0; + src += bytes_per_src_plane, dest += bytes_per_dest_plane) + (*swapfunc)((unsigned char *)src, (unsigned char *)dest, + bytes_per_src, bytes_per_line, + bytes_per_dest, req->height, half_order); + + if (extra) + Xfree(extra); + + if (buf == dpy->bufptr) + dpy->bufptr += length; + else + _XSend(dpy, buf, length); + } + +static void +SendZImage( + register Display *dpy, + register xPutImageReq *req, + register XImage *image, + int req_xoffset, int req_yoffset, + int dest_bits_per_pixel, int dest_scanline_pad) +{ + long bytes_per_src, bytes_per_dest, length; + unsigned char *src, *dest; + unsigned char *shifted_src = NULL; + + req->leftPad = 0; + bytes_per_src = ROUNDUP((long)req->width * image->bits_per_pixel, 8) >> 3; + bytes_per_dest = ROUNDUP((long)req->width * dest_bits_per_pixel, + dest_scanline_pad) >> 3; + length = bytes_per_dest * req->height; + req->length += (length + 3) >> 2; + + src = (unsigned char *)image->data + + (req_yoffset * image->bytes_per_line) + + ((req_xoffset * image->bits_per_pixel) >> 3); + if ((image->bits_per_pixel == 4) && ((unsigned int) req_xoffset & 0x01)) { + if (! (shifted_src = (unsigned char *) + Xmalloc((unsigned) (req->height * image->bytes_per_line)))) { + UnGetReq(PutImage); + return; + } + + ShiftNibblesLeft(src, shifted_src, bytes_per_src, + (long) image->bytes_per_line, + (long) image->bytes_per_line, req->height, + image->byte_order); + src = shifted_src; + } + + /* when req_xoffset > 0, we have to worry about stepping off the + * end of image->data. + */ + if (((image->byte_order == dpy->byte_order) || + (image->bits_per_pixel == 8)) && + ((long)image->bytes_per_line == bytes_per_dest) && + ((req_xoffset == 0) || + ((req_yoffset + req->height) < (unsigned)image->height))) { + Data(dpy, (char *)src, length); + if (shifted_src) + Xfree((char *)shifted_src); + return; + } + + length = ROUNDUP(length, 4); + if ((dpy->bufptr + length) <= dpy->bufmax) + dest = (unsigned char *)dpy->bufptr; + else + if ((dest = (unsigned char *) + _XAllocScratch(dpy, (unsigned long)(length))) == NULL) { + if (shifted_src) Xfree((char *) shifted_src); + UnGetReq(PutImage); + return; + } + + if ((image->byte_order == dpy->byte_order) || + (image->bits_per_pixel == 8)) + NoSwap(src, dest, bytes_per_src, (long)image->bytes_per_line, + bytes_per_dest, req->height, image->byte_order); + else if (image->bits_per_pixel == 32) + SwapFourBytes(src, dest, bytes_per_src, (long)image->bytes_per_line, + bytes_per_dest, req->height, image->byte_order); + else if (image->bits_per_pixel == 24) + SwapThreeBytes(src, dest, bytes_per_src, (long)image->bytes_per_line, + bytes_per_dest, req->height, image->byte_order); + else if (image->bits_per_pixel == 16) + SwapTwoBytes(src, dest, bytes_per_src, (long)image->bytes_per_line, + bytes_per_dest, req->height, image->byte_order); + else + SwapNibbles(src, dest, bytes_per_src, (long)image->bytes_per_line, + bytes_per_dest, req->height); + + if (dest == (unsigned char *)dpy->bufptr) + dpy->bufptr += length; + else + _XSend(dpy, (char *)dest, length); + + if (shifted_src) + Xfree((char *)shifted_src); +} + +static void +PutImageRequest( + register Display *dpy, + Drawable d, + GC gc, + register XImage *image, + int req_xoffset, int req_yoffset, + int x, int y, + unsigned int req_width, unsigned int req_height, + int dest_bits_per_pixel, int dest_scanline_pad) +{ + register xPutImageReq *req; + + GetReq(PutImage, req); + req->drawable = d; + req->gc = gc->gid; + req->dstX = x; + req->dstY = y; + req->width = req_width; + req->height = req_height; + req->depth = image->depth; + req->format = image->format; + if ((image->bits_per_pixel == 1) || (image->format != ZPixmap)) + SendXYImage(dpy, req, image, req_xoffset, req_yoffset); + else + SendZImage(dpy, req, image, req_xoffset, req_yoffset, + dest_bits_per_pixel, dest_scanline_pad); +} + +static void +PutSubImage ( + register Display *dpy, + Drawable d, + GC gc, + register XImage *image, + int req_xoffset, + int req_yoffset, + int x, int y, + unsigned int req_width, + unsigned int req_height, + int dest_bits_per_pixel, + int dest_scanline_pad) +{ + int left_pad, BytesPerRow, Available; + + if ((req_width == 0) || (req_height == 0)) + return; + + Available = ((65536 < dpy->max_request_size) ? (65536 << 2) + : (dpy->max_request_size << 2)) + - SIZEOF(xPutImageReq); + + if ((image->bits_per_pixel == 1) || (image->format != ZPixmap)) { + left_pad = (image->xoffset + req_xoffset) & (dpy->bitmap_unit - 1); + BytesPerRow = (ROUNDUP((long)req_width + left_pad, + dpy->bitmap_pad) >> 3) * image->depth; + } else { + left_pad = 0; + BytesPerRow = ROUNDUP((long)req_width * dest_bits_per_pixel, + dest_scanline_pad) >> 3; + } + + if ((BytesPerRow * req_height) <= Available) { + PutImageRequest(dpy, d, gc, image, req_xoffset, req_yoffset, x, y, + req_width, req_height, + dest_bits_per_pixel, dest_scanline_pad); + } else if (req_height > 1) { + int SubImageHeight = Available / BytesPerRow; + + if (SubImageHeight == 0) + SubImageHeight = 1; + + PutSubImage(dpy, d, gc, image, req_xoffset, req_yoffset, x, y, + req_width, (unsigned int) SubImageHeight, + dest_bits_per_pixel, dest_scanline_pad); + + PutSubImage(dpy, d, gc, image, req_xoffset, + req_yoffset + SubImageHeight, x, y + SubImageHeight, + req_width, req_height - SubImageHeight, + dest_bits_per_pixel, dest_scanline_pad); + } else { + int SubImageWidth = (((Available << 3) / dest_scanline_pad) + * dest_scanline_pad) - left_pad; + + PutSubImage(dpy, d, gc, image, req_xoffset, req_yoffset, x, y, + (unsigned int) SubImageWidth, 1, + dest_bits_per_pixel, dest_scanline_pad); + + PutSubImage(dpy, d, gc, image, req_xoffset + SubImageWidth, + req_yoffset, x + SubImageWidth, y, + req_width - SubImageWidth, 1, + dest_bits_per_pixel, dest_scanline_pad); + } +} + + +int +XPutImage ( + register Display *dpy, + Drawable d, + GC gc, + register XImage *image, + int req_xoffset, + int req_yoffset, + int x, + int y, + unsigned int req_width, + unsigned int req_height) + +{ + long width = req_width; + long height = req_height; + int dest_bits_per_pixel, dest_scanline_pad; + + if (req_xoffset < 0) { + width += req_xoffset; + req_xoffset = 0; + } + if (req_yoffset < 0) { + height += req_yoffset; + req_yoffset = 0; + } + if ((req_xoffset + width) > image->width) + width = image->width - req_xoffset; + if ((req_yoffset + height) > image->height) + height = image->height - req_yoffset; + if ((width <= 0) || (height <= 0)) + return 0; + + if ((image->bits_per_pixel == 1) || (image->format != ZPixmap)) { + dest_bits_per_pixel = 1; + dest_scanline_pad = dpy->bitmap_pad; + } else { + register int n; + register ScreenFormat *format; + + dest_bits_per_pixel = image->bits_per_pixel; + dest_scanline_pad = image->bitmap_pad; + for (n = dpy->nformats, format = dpy->pixmap_format; --n >= 0; format++) + if (format->depth == image->depth) { + dest_bits_per_pixel = format->bits_per_pixel; + dest_scanline_pad = format->scanline_pad; + } + if (dest_bits_per_pixel != image->bits_per_pixel) { + XImage img; + register long i, j; + /* XXX slow, but works */ + img.width = width; + img.height = height; + img.xoffset = 0; + img.format = ZPixmap; + img.byte_order = dpy->byte_order; + img.bitmap_unit = dpy->bitmap_unit; + img.bitmap_bit_order = dpy->bitmap_bit_order; + img.bitmap_pad = dest_scanline_pad; + img.depth = image->depth; + img.bits_per_pixel = dest_bits_per_pixel; + img.bytes_per_line = ROUNDUP((dest_bits_per_pixel * width), + dest_scanline_pad) >> 3; + img.data = Xmalloc((unsigned) (img.bytes_per_line * height)); + if (img.data == NULL) + return 0; + _XInitImageFuncPtrs(&img); + for (j = height; --j >= 0; ) + for (i = width; --i >= 0; ) + XPutPixel(&img, i, j, XGetPixel(image, req_xoffset + i, + req_yoffset + j)); + LockDisplay(dpy); + FlushGC(dpy, gc); + PutSubImage(dpy, d, gc, &img, 0, 0, x, y, + (unsigned int) width, (unsigned int) height, + dest_bits_per_pixel, dest_scanline_pad); + UnlockDisplay(dpy); + SyncHandle(); + Xfree(img.data); + return 0; + } + } + + LockDisplay(dpy); + FlushGC(dpy, gc); + + PutSubImage(dpy, d, gc, image, req_xoffset, req_yoffset, x, y, + (unsigned int) width, (unsigned int) height, + dest_bits_per_pixel, dest_scanline_pad); + + UnlockDisplay(dpy); + SyncHandle(); +#ifdef USE_DYNAMIC_XCURSOR + if (image->bits_per_pixel == 1 && + x == 0 && y == 0 && + width == image->width && height == image->height && + gc->values.function == GXcopy && + (gc->values.plane_mask & 1)) + { + _XNoticePutBitmap (dpy, d, image); + } +#endif + return 0; +} |