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Diffstat (limited to 'nx-X11/programs/Xserver/lbx/lbxgfx.c')
-rw-r--r--nx-X11/programs/Xserver/lbx/lbxgfx.c854
1 files changed, 854 insertions, 0 deletions
diff --git a/nx-X11/programs/Xserver/lbx/lbxgfx.c b/nx-X11/programs/Xserver/lbx/lbxgfx.c
new file mode 100644
index 000000000..506859a20
--- /dev/null
+++ b/nx-X11/programs/Xserver/lbx/lbxgfx.c
@@ -0,0 +1,854 @@
+/* $Xorg: lbxgfx.c,v 1.3 2000/08/17 19:53:31 cpqbld Exp $ */
+/*
+ * Copyright 1993 Network Computing Devices, Inc.
+ *
+ * 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, and that the name Network Computing Devices, Inc. not be
+ * used in advertising or publicity pertaining to distribution of this
+ * software without specific, written prior permission.
+ *
+ * THIS SOFTWARE IS PROVIDED `AS-IS'. NETWORK COMPUTING DEVICES, INC.,
+ * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING WITHOUT
+ * LIMITATION ALL IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE, OR NONINFRINGEMENT. IN NO EVENT SHALL NETWORK
+ * COMPUTING DEVICES, INC., BE LIABLE FOR ANY DAMAGES WHATSOEVER, INCLUDING
+ * SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES, INCLUDING LOSS OF USE, DATA,
+ * OR PROFITS, EVEN IF ADVISED OF THE POSSIBILITY THEREOF, AND REGARDLESS OF
+ * WHETHER IN AN ACTION IN CONTRACT, TORT OR NEGLIGENCE, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+/* $XFree86: xc/programs/Xserver/lbx/lbxgfx.c,v 1.3 2001/01/17 22:36:59 dawes Exp $ */
+
+/* various bits of DIX-level mangling */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <sys/types.h>
+#include <stdio.h>
+#define NEED_REPLIES
+#define NEED_EVENTS
+#include <X11/X.h>
+#include <X11/Xproto.h>
+#include "misc.h"
+#include "os.h"
+#include "dixstruct.h"
+#include "resource.h"
+#include "servermd.h"
+#include "windowstr.h"
+#include "scrnintstr.h"
+#define _XLBX_SERVER_
+#include <X11/extensions/lbxstr.h>
+#include "lbxserve.h"
+#include "lbxtags.h"
+#include <X11/Xfuncproto.h>
+#include <X11/extensions/lbximage.h>
+#include "lbxsrvopts.h"
+
+#define DrawableCache(client) (LbxClient(client)->drawableCache)
+#define GContextCache(client) (LbxClient(client)->gcontextCache)
+
+static void
+push (XID cache[GFX_CACHE_SIZE],
+ XID xid)
+{
+ memmove (cache+1, cache, (GFX_CACHE_SIZE - 1) * sizeof (cache[0]));
+ cache[0] = xid;
+}
+
+static XID
+use (XID cache[GFX_CACHE_SIZE],
+ int i)
+{
+ XID tmp;
+
+ tmp = cache[i];
+ if (i != 0)
+ {
+ memmove (cache + 1, cache, i * sizeof (cache[0]));
+ cache[0] = tmp;
+ }
+ return tmp;
+}
+
+extern char *ConnectionInfo;
+
+static int
+LbxDecodeGFXCache(ClientPtr client,
+ CARD8 cacheEnts,
+ char *after,
+ Drawable *drawp,
+ GContext *gcp)
+{
+ int skip;
+ int dcache, gcache;
+
+ dcache = GFXdCacheEnt (cacheEnts);
+ gcache = GFXgCacheEnt (cacheEnts);
+ skip = 0;
+ if (dcache == GFXCacheNone)
+ {
+ memcpy (drawp, after, sizeof (Drawable));
+ push (DrawableCache(client), *drawp);
+ after += sizeof (Drawable);
+ skip += sizeof (Drawable);
+ }
+ else
+ *drawp = use (DrawableCache(client), dcache);
+ if (gcache == GFXCacheNone)
+ {
+ memcpy (gcp, after, sizeof (GContext));
+ push (GContextCache(client), *gcp);
+ skip += sizeof (GContext);
+ }
+ else
+ *gcp = use (GContextCache(client), gcache);
+ return skip;
+}
+
+static int
+LbxDecodeDrawableCache(ClientPtr client,
+ CARD8 cacheEnts,
+ char *after,
+ Drawable *drawp)
+{
+ int skip;
+ int dcache;
+
+ dcache = GFXdCacheEnt (cacheEnts);
+ skip = 0;
+ if (dcache == GFXCacheNone)
+ {
+ memcpy (drawp, after, sizeof (Drawable));
+ push (DrawableCache(client), *drawp);
+ after += sizeof (Drawable);
+ skip += sizeof (Drawable);
+ }
+ else
+ *drawp = use (DrawableCache(client), dcache);
+ return skip;
+}
+
+#ifdef notyet
+static int
+LbxDecodeGCCache(ClientPtr client,
+ CARD8 cacheEnts,
+ char *after,
+ GContext *gcp)
+{
+ int skip;
+ int gcache;
+
+ gcache = GFXgCacheEnt (cacheEnts);
+ skip = 0;
+ if (gcache == GFXCacheNone)
+ {
+ memcpy (gcp, after, sizeof (GContext));
+ push (GContextCache(client), *gcp);
+ after += sizeof (GContext);
+ skip += sizeof (GContext);
+ }
+ else
+ *gcp = use (GContextCache(client), gcache);
+ return skip;
+}
+#endif
+
+#define GFX_GET_DRAWABLE_AND_GC(type,in,len) {\
+ int skip; \
+ len = (client->req_len << 2) - SIZEOF(type); \
+ in = ((char *) stuff) + SIZEOF(type);\
+ skip = LbxDecodeGFXCache(client, stuff->cacheEnts, in, \
+ &drawable, &gc); \
+ in += skip; \
+ len -= skip; \
+}
+
+#define GFX_GET_DST_DRAWABLE_AND_GC(type,in,len) {\
+ int skip; \
+ len = (client->req_len << 2) - SIZEOF(type); \
+ in = ((char *) stuff) + SIZEOF(type);\
+ skip = LbxDecodeGFXCache(client, stuff->cacheEnts, in, \
+ &dstDrawable, &gc); \
+ in += skip; \
+ len -= skip; \
+}
+
+#define GFX_GET_SRC_DST_DRAWABLE_AND_GC(type, in, len) { \
+ int skip; \
+ len = (client->req_len << 2) - SIZEOF(type); \
+ in = ((char *) stuff) + SIZEOF(type); \
+ skip = LbxDecodeDrawableCache(client, stuff->srcCache, in, \
+ &srcDrawable); \
+ in += skip; \
+ len -= skip; \
+ skip = LbxDecodeGFXCache(client, stuff->cacheEnts, in, \
+ &dstDrawable, &gc); \
+ in += skip; \
+ len -= skip; \
+}
+
+#define GFX_GET_GC(type, in, len) { \
+ int skip; \
+ len = (client->req_len << 2) - SIZEOF(type); \
+ in = ((char *) stuff) + SIZEOF(type); \
+ skip = LbxDecodeGCCache(client, stuff->gcCache, in, &gc); \
+ in += skip; \
+ len -= skip; \
+}
+
+int
+LbxDecodePoly(ClientPtr client,
+ CARD8 xreqtype,
+ int (*decode_rtn)(char *, char *, short *))
+{
+ REQUEST(xLbxPolyPointReq);
+ char *in;
+ xPolyPointReq *xreq;
+ int len;
+ int retval;
+ Drawable drawable;
+ GContext gc;
+
+ GFX_GET_DRAWABLE_AND_GC(xLbxPolyPointReq, in, len);
+ if ((xreq = (xPolyPointReq *)
+ xalloc(sizeof(xPolyPointReq) + (len << 1))) == NULL)
+ return BadAlloc;
+ len = (*decode_rtn)(in, in + len - stuff->padBytes, (short *)(&xreq[1]));
+ xreq->reqType = xreqtype;
+ xreq->coordMode = 1;
+ xreq->drawable = drawable;
+ xreq->gc = gc;
+ xreq->length = client->req_len = (sizeof(xPolyPointReq) + len) >> 2;
+ client->requestBuffer = (pointer)xreq;
+
+ retval = (*ProcVector[xreqtype])(client);
+ xfree(xreq);
+ return retval;
+}
+
+int
+LbxDecodeFillPoly(ClientPtr client)
+{
+ REQUEST(xLbxFillPolyReq);
+ char *in;
+ xFillPolyReq *xreq;
+ int len;
+ int retval;
+ Drawable drawable;
+ GContext gc;
+
+ GFX_GET_DRAWABLE_AND_GC(xLbxFillPolyReq, in, len);
+ if ((xreq = (xFillPolyReq *)
+ xalloc(sizeof(xFillPolyReq) + (len << 1))) == NULL)
+ return BadAlloc;
+ len = LbxDecodePoints(in, in + len - stuff->padBytes, (short *) &xreq[1]);
+ xreq->reqType = X_FillPoly;
+ xreq->drawable = drawable;
+ xreq->gc = gc;
+ xreq->shape = stuff->shape;
+ xreq->coordMode = 1;
+ xreq->length = client->req_len = (sizeof(xFillPolyReq) + len) >> 2;
+ client->requestBuffer = (pointer)xreq;
+
+ retval = (*ProcVector[X_FillPoly])(client);
+ xfree(xreq);
+ return retval;
+}
+
+/*
+ * Routines for decoding line drawing requests
+ */
+
+#define DECODE_PSHORT(in, val) \
+ if ((*(in) & 0xf0) != 0xf0) \
+ (val) = *(CARD8 *)(in)++; \
+ else { \
+ (val) = ((*(CARD8 *)(in) & 0x0f) << 8) | *(CARD8 *)((in) + 1); \
+ if ((val) >= 0xe00) \
+ (val) -= 0x1000; \
+ else \
+ (val) += 0xf0; \
+ (in) += 2; \
+ }
+
+#define DECODE_SHORT(in, val) \
+ if ((*(in) & 0xf0) != 0x80) \
+ (val) = *(INT8 *)(in)++; \
+ else { \
+ (val) = ((*(CARD8 *)(in) & 0x0f) << 8) | *(CARD8 *)((in) + 1); \
+ if ((val) & 0x0800) \
+ (val) = ((val) | 0xf000) - 0x70; \
+ else \
+ (val) += 0x80; \
+ (in) += 2; \
+ }
+
+#define DECODE_USHORT(in, val) \
+ if ((*(in) & 0xf0) != 0xf0) \
+ (val) = *(CARD8 *)(in)++; \
+ else { \
+ (val) = (((*(CARD8 *)(in) & 0x0f) << 8) | *(CARD8 *)((in) + 1)) + 0xf0; \
+ (in) += 2; \
+ }
+
+#define DECODE_ANGLE(in, val) \
+ if (*(INT8 *)(in) >= 0x6e) \
+ (val) = (*(INT8 *)(in)++ - 0x67) * (15 << 6); \
+ else if (*(INT8 *)(in) >= 0x5a) \
+ (val) = (*(INT8 *)(in)++ - 0x5a) * (5 << 6); \
+ else if (*(INT8 *)(in) <= (INT8)0x91) \
+ (val) = (*(INT8 *)(in)++ - (INT8)0x98) * (15 << 6); \
+ else if (*(INT8 *)(in) <= (INT8)0xa5) \
+ (val) = (*(INT8 *)(in)++ - (INT8)0xa6) * (5 << 6); \
+ else { \
+ (val) = (*(CARD8 *)(in) << 8) | *(CARD8 *)((in) + 1); \
+ (in) += 2; \
+ }
+
+int
+LbxDecodePoints(char *in,
+ char *inend,
+ short *out)
+{
+ char *start_out = (char *)out;
+
+ while (in < inend) {
+ DECODE_SHORT(in, *out);
+ out++;
+ DECODE_SHORT(in, *out);
+ out++;
+ }
+ return ((char *)out - start_out);
+}
+
+int
+LbxDecodeSegment(char *in,
+ char *inend,
+ short *out)
+{
+ short diff;
+ short last_x = 0;
+ short last_y = 0;
+ char *start_out = (char *)out;
+
+ while (in < inend) {
+ DECODE_SHORT(in, diff);
+ *out = last_x + diff;
+ last_x += diff;
+ out++;
+ DECODE_SHORT(in, diff);
+ *out = last_y + diff;
+ last_y += diff;
+ out++;
+
+ DECODE_SHORT(in, diff);
+ *out = last_x + diff;
+ out++;
+ DECODE_SHORT(in, diff);
+ *out = last_y + diff;
+ out++;
+ }
+ return ((char *)out - start_out);
+}
+
+int
+LbxDecodeRectangle(char *in,
+ char *inend,
+ short *out)
+{
+ short diff;
+ short last_x = 0;
+ short last_y = 0;
+ char *start_out = (char *)out;
+
+ while (in < inend) {
+ DECODE_SHORT(in, diff);
+ *out = last_x + diff;
+ last_x += diff;
+ out++;
+ DECODE_SHORT(in, diff);
+ *out = last_y + diff;
+ last_y += diff;
+ out++;
+
+ DECODE_USHORT(in, *(unsigned short *)out);
+ out++;
+ DECODE_USHORT(in, *(unsigned short *)out);
+ out++;
+ }
+ return ((char *)out - start_out);
+}
+
+int
+LbxDecodeArc(char *in,
+ char *inend,
+ short *out)
+{
+ short diff;
+ short last_x = 0;
+ short last_y = 0;
+ char *start_out = (char *)out;
+
+ while (in < inend) {
+ DECODE_SHORT(in, diff);
+ *out = last_x + diff;
+ last_x += diff;
+ out++;
+ DECODE_SHORT(in, diff);
+ *out = last_y + diff;
+ last_y += diff;
+ out++;
+
+ DECODE_USHORT(in, *(unsigned short *)out);
+ out++;
+ DECODE_USHORT(in, *(unsigned short *)out);
+ out++;
+
+ DECODE_ANGLE(in, *out);
+ out++;
+ DECODE_ANGLE(in, *out);
+ out++;
+ }
+ return ((char *)out - start_out);
+}
+
+int
+LbxDecodeCopyArea (ClientPtr client)
+{
+ REQUEST(xLbxCopyAreaReq);
+ char *in;
+ xCopyAreaReq req;
+ int len;
+ Drawable srcDrawable, dstDrawable;
+ GContext gc;
+
+ GFX_GET_SRC_DST_DRAWABLE_AND_GC(xLbxCopyAreaReq, in, len);
+ req.reqType = X_CopyArea;
+ req.length = client->req_len = SIZEOF(xCopyAreaReq) >> 2;
+ req.srcDrawable = srcDrawable;
+ req.dstDrawable = dstDrawable;
+ req.gc = gc;
+ DECODE_PSHORT (in, req.srcX);
+ DECODE_PSHORT (in, req.srcY);
+ DECODE_PSHORT (in, req.dstX);
+ DECODE_PSHORT (in, req.dstY);
+ DECODE_USHORT (in, req.width);
+ DECODE_USHORT (in, req.height);
+ client->requestBuffer = (pointer) &req;
+ return (*ProcVector[X_CopyArea])(client);
+}
+
+int
+LbxDecodeCopyPlane (ClientPtr client)
+{
+ REQUEST(xLbxCopyPlaneReq);
+ char *in;
+ xCopyPlaneReq req;
+ int len;
+ Drawable srcDrawable, dstDrawable;
+ GContext gc;
+
+ GFX_GET_SRC_DST_DRAWABLE_AND_GC(xLbxCopyPlaneReq, in, len);
+ req.reqType = X_CopyPlane;
+ req.length = client->req_len = SIZEOF(xCopyPlaneReq) >> 2;
+ req.srcDrawable = srcDrawable;
+ req.dstDrawable = dstDrawable;
+ req.gc = gc;
+ DECODE_PSHORT (in, req.srcX);
+ DECODE_PSHORT (in, req.srcY);
+ DECODE_PSHORT (in, req.dstX);
+ DECODE_PSHORT (in, req.dstY);
+ DECODE_USHORT (in, req.width);
+ DECODE_USHORT (in, req.height);
+ req.bitPlane = stuff->bitPlane;
+ client->requestBuffer = (pointer) &req;
+ return (*ProcVector[X_CopyPlane])(client);
+}
+
+static pointer
+get_gfx_buffer(ClientPtr client,
+ int len)
+{
+ LbxClientPtr lbxClient = LbxClient(client);
+ pointer tmp;
+
+ /* XXX should probably shrink this sucker too */
+ if (len > lbxClient->gb_size) {
+ tmp = (pointer) xrealloc(lbxClient->gfx_buffer, len);
+ if (!tmp)
+ return (pointer) NULL;
+ lbxClient->gfx_buffer = tmp;
+ lbxClient->gb_size = len;
+ }
+ return lbxClient->gfx_buffer;
+}
+
+int
+LbxDecodePolyText (ClientPtr client)
+{
+ REQUEST(xLbxPolyTextReq);
+ char *in, *pos;
+ xPolyTextReq *xreq;
+ int len;
+ Drawable drawable;
+ GContext gc;
+
+ GFX_GET_DRAWABLE_AND_GC(xLbxPolyTextReq, in, len);
+ xreq = (xPolyTextReq *) get_gfx_buffer(client, sizeof (xPolyTextReq) + len);
+ if (!xreq)
+ return BadAlloc;
+ xreq->reqType = stuff->lbxReqType == X_LbxPolyText8? X_PolyText8 : X_PolyText16;
+ xreq->drawable = drawable;
+ xreq->gc = gc;
+ pos = in;
+ DECODE_PSHORT(in, xreq->x);
+ DECODE_PSHORT(in, xreq->y);
+ len -= (in - pos);
+ memmove ((char *) (xreq + 1), in, len);
+ xreq->length = client->req_len = (sizeof (xPolyTextReq) + len) >> 2;
+ client->requestBuffer = (pointer) xreq;
+ return (*ProcVector[xreq->reqType])(client);
+}
+
+int
+LbxDecodeImageText (ClientPtr client)
+{
+ REQUEST(xLbxImageTextReq);
+ char *in, *pos;
+ xImageTextReq *xreq;
+ int len;
+ Drawable drawable;
+ GContext gc;
+
+ GFX_GET_DRAWABLE_AND_GC(xLbxImageTextReq, in, len);
+ xreq = (xImageTextReq *) get_gfx_buffer(client, sizeof (xImageTextReq) + len);
+ if (!xreq)
+ return BadAlloc;
+ xreq->reqType = stuff->lbxReqType == X_LbxImageText8? X_ImageText8 : X_ImageText16;
+ xreq->drawable = drawable;
+ xreq->gc = gc;
+ xreq->nChars = stuff->nChars;
+ pos = in;
+ DECODE_PSHORT(in, xreq->x);
+ DECODE_PSHORT(in, xreq->y);
+ len -= (in - pos);
+ memmove ((char *) (xreq + 1), in, len);
+ xreq->length = client->req_len = (sizeof (xImageTextReq) + len) >> 2;
+ client->requestBuffer = (pointer) xreq;
+ return (*ProcVector[xreq->reqType])(client);
+}
+
+int
+LbxDecodePutImage (ClientPtr client)
+{
+ REQUEST (xLbxPutImageReq);
+ char *in, *data;
+ xPutImageReq xreq;
+ int ppl, bpl, nbytes;
+ int retval;
+ int n;
+
+ xreq.reqType = X_PutImage;
+
+ in = (char *) stuff + sz_xLbxPutImageReq;
+
+ if (stuff->bitPacked & 0x80) {
+ xreq.format = (stuff->bitPacked >> 5) & 0x3;
+ xreq.depth = ((stuff->bitPacked >> 2) & 0x7) + 1;
+ xreq.leftPad = 0;
+ } else {
+ xreq.depth = (stuff->bitPacked >> 2) + 1;
+ xreq.format = (*in >> 5) & 0x3;
+ xreq.leftPad = *in++ & 0x1f;
+ }
+ DECODE_USHORT(in, xreq.width);
+ DECODE_USHORT(in, xreq.height);
+ DECODE_PSHORT(in, xreq.dstX);
+ DECODE_PSHORT(in, xreq.dstY);
+ if (client->swapped) {
+ if (GFXdCacheEnt (stuff->cacheEnts) == GFXCacheNone ||
+ GFXgCacheEnt (stuff->cacheEnts) == GFXCacheNone)
+ {
+ swapl (in, n);
+ if (GFXdCacheEnt (stuff->cacheEnts) == GFXCacheNone &&
+ GFXgCacheEnt (stuff->cacheEnts) == GFXCacheNone)
+ swapl (in + 4, n);
+ }
+ }
+ in += LbxDecodeGFXCache(client, stuff->cacheEnts, in,
+ &xreq.drawable, &xreq.gc);
+
+ ppl = xreq.width + xreq.leftPad;
+ if (xreq.format != ZPixmap ||
+ (xreq.depth == 1 && screenInfo.formats->bitsPerPixel == 1)) {
+#ifdef INTERNAL_VS_EXTERNAL_PADDING
+ bpl = BitmapBytePadProto(ppl);
+#else
+ bpl = BitmapBytePad(ppl);
+#endif
+ nbytes = bpl;
+ if (xreq.format == XYPixmap)
+ nbytes *= xreq.depth;
+ } else {
+#ifdef INTERNAL_VS_EXTERNAL_PADDING
+ bpl = PixmapBytePadProto(ppl, xreq.depth);
+#else
+ bpl = PixmapBytePad(ppl, xreq.depth);
+#endif
+ nbytes = bpl;
+ }
+ nbytes *= xreq.height;
+ xreq.length = ((nbytes + 3) >> 2) + (sz_xPutImageReq >> 2);
+ /* +1 is because fillspan in DecodeFaxG42D seems to go 1 byte too far,
+ * and I don't want to mess with that code */
+ if ((data = (char *) xalloc ((xreq.length << 2) + 1)) == NULL)
+ return BadAlloc;
+
+ *((xPutImageReq *)data) = xreq;
+
+ if (!stuff->compressionMethod)
+ {
+ memcpy(data + sz_xPutImageReq, in, nbytes);
+ }
+ else if (xreq.format != ZPixmap ||
+ (xreq.depth == 1 && screenInfo.formats->bitsPerPixel == 1))
+ {
+ LbxBitmapCompMethod *compMethod;
+
+ compMethod = LbxSrvrLookupBitmapCompMethod (LbxProxy(client),
+ stuff->compressionMethod);
+
+ if (!compMethod)
+ {
+ xfree (data);
+ return (BadValue);
+ }
+ else
+ {
+ if (!compMethod->inited)
+ {
+ if (compMethod->compInit)
+ (*compMethod->compInit)();
+ compMethod->inited = 1;
+ }
+
+ (*compMethod->decompFunc) (
+ (unsigned char *) in, (unsigned char *) data + sz_xPutImageReq,
+ nbytes,
+#if BITMAP_BIT_ORDER != IMAGE_BYTE_ORDER
+ (ppl + BITMAP_SCANLINE_UNIT - 1) & ~BITMAP_SCANLINE_UNIT,
+#else
+ ppl,
+#endif
+ bpl,
+ ((xConnSetup *) ConnectionInfo)->bitmapBitOrder == LSBFirst);
+ }
+ }
+ else
+ {
+ LbxPixmapCompMethod *compMethod;
+
+ compMethod = LbxSrvrLookupPixmapCompMethod (LbxProxy(client),
+ stuff->compressionMethod);
+
+ if (!compMethod)
+ {
+ xfree (data);
+ return (BadValue);
+ }
+ else
+ {
+ if (!compMethod->inited)
+ {
+ if (compMethod->compInit)
+ (*compMethod->compInit)();
+ compMethod->inited = 1;
+ }
+
+ (*compMethod->decompFunc) (
+ in, (char *) data + sz_xPutImageReq,
+ (int) xreq.height, bpl);
+ }
+ }
+
+ client->req_len = xreq.length;
+ client->requestBuffer = (pointer) data;
+
+ retval = (*ProcVector[X_PutImage])(client);
+ xfree(data);
+ return retval;
+}
+
+int
+LbxDecodeGetImage (ClientPtr client)
+{
+ REQUEST (xLbxGetImageReq);
+ xLbxGetImageReply *reply = NULL;
+ int lbxLen, xLen, n;
+ int method = 0, bytes, status;
+ xGetImageReply *theImage;
+
+ REQUEST_SIZE_MATCH(xLbxGetImageReq);
+
+ status = DoGetImage(client, stuff->format, stuff->drawable,
+ stuff->x, stuff->y,
+ (int)stuff->width, (int)stuff->height,
+ stuff->planeMask, &theImage);
+
+ if (status != Success)
+ return (status);
+
+ if ((reply = (xLbxGetImageReply *) xalloc (
+ sz_xLbxGetImageReply + theImage->length)) == NULL)
+ {
+ xfree(theImage);
+ return (BadAlloc);
+ }
+
+ if (stuff->format != ZPixmap ||
+ (theImage->depth == 1 && screenInfo.formats->bitsPerPixel == 1))
+ {
+ LbxBitmapCompMethod *compMethod;
+
+ compMethod = LbxSrvrFindPreferredBitmapCompMethod (LbxProxy(client));
+
+ if (!compMethod)
+ status = LBX_IMAGE_COMPRESS_NO_SUPPORT;
+ else
+ {
+ if (!compMethod->inited)
+ {
+ if (compMethod->compInit)
+ (*compMethod->compInit)();
+ compMethod->inited = 1;
+ }
+
+ status = (*compMethod->compFunc) (
+ (unsigned char *) &theImage[1],
+ (unsigned char *) &reply[1],
+ theImage->length,
+ theImage->length,
+#if BITMAP_BIT_ORDER != IMAGE_BYTE_ORDER
+ (int) (stuff->width + BITMAP_SCANLINE_UNIT - 1) &
+ ~BITMAP_SCANLINE_UNIT,
+#else
+ (int) stuff->width,
+#endif
+#ifdef INTERNAL_VS_EXTERNAL_PADDING
+ BitmapBytePadProto(stuff->width),
+#else
+ BitmapBytePad(stuff->width),
+#endif
+ ((xConnSetup *) ConnectionInfo)->bitmapBitOrder == LSBFirst,
+ &bytes);
+
+ method = compMethod->methodOpCode;
+ }
+ }
+ else
+ {
+ LbxPixmapCompMethod *compMethod;
+
+ compMethod = LbxSrvrFindPreferredPixmapCompMethod (
+ LbxProxy(client), (int) stuff->format, theImage->depth);
+
+ if (!compMethod)
+ status = LBX_IMAGE_COMPRESS_NO_SUPPORT;
+ else
+ {
+ if (!compMethod->inited)
+ {
+ if (compMethod->compInit)
+ (*compMethod->compInit)();
+ compMethod->inited = 1;
+ }
+
+ status = (*compMethod->compFunc) (
+ (char *) &theImage[1],
+ (char *) &reply[1],
+ theImage->length,
+ (int) stuff->format,
+ theImage->depth,
+ (int) stuff->height,
+#ifdef INTERNAL_VS_EXTERNAL_PADDING
+ PixmapBytePadProto(stuff->width, theImage->depth),
+#else
+ PixmapBytePad(stuff->width, theImage->depth),
+#endif
+ &bytes);
+
+ method = compMethod->methodOpCode;
+ }
+ }
+
+ reply->type = X_Reply;
+ reply->depth = theImage->depth;
+ reply->sequenceNumber = client->sequence;
+ reply->visual = theImage->visual;
+ reply->pad1 = reply->pad2 = reply->pad3 = reply->pad4 = reply->pad5 = 0;
+
+ if (status != LBX_IMAGE_COMPRESS_SUCCESS)
+ {
+ reply->compressionMethod = LbxImageCompressNone;
+ reply->lbxLength = reply->xLength = (theImage->length + 3) >> 2;
+ }
+ else
+ {
+ reply->compressionMethod = method;
+ reply->lbxLength = (bytes + 3) >> 2;
+ reply->xLength = (theImage->length + 3) >> 2;
+ }
+
+ lbxLen = reply->lbxLength;
+ xLen = reply->xLength;
+
+ if (client->swapped)
+ {
+ swaps (&reply->sequenceNumber, n);
+ swapl (&reply->lbxLength, n);
+ swapl (&reply->xLength, n);
+ swapl (&reply->visual, n);
+ }
+
+ if (reply->compressionMethod != LbxImageCompressNone)
+ {
+ /*
+ * If the compressed image is greater that 25% of the original
+ * image, run the GetImage reply through the regular stream
+ * compressor. Otherwise, just write the compressed image.
+ */
+
+ if (lbxLen > (xLen / 4))
+ {
+ WriteToClient (client,
+ sz_xLbxGetImageReply + (lbxLen << 2), (char *)reply);
+ }
+ else
+ {
+ UncompressedWriteToClient (client,
+ sz_xLbxGetImageReply + (lbxLen << 2), (char *)reply);
+ }
+ }
+ else
+ {
+ /*
+ * Write back the original uncompressed image.
+ */
+
+ WriteToClient (client, sz_xLbxGetImageReply, (char *)reply);
+ WriteToClient (client, lbxLen << 2, (char *)&theImage[1]);
+ }
+
+ xfree (theImage);
+
+ if (reply)
+ xfree ((char *) reply);
+
+ return (Success);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-02 14:59:55 +0000