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/*

 * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)

 * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.

 *

 * Permission is hereby granted, free of charge, to any person obtaining a

 * copy of this software and associated documentation files (the "Software"),

 * to deal in the Software without restriction, including without limitation

 * the rights to use, copy, modify, merge, publish, distribute, sublicense,

 * and/or sell copies of the Software, and to permit persons to whom the

 * Software is furnished to do so, subject to the following conditions:

 *

 * The above copyright notice including the dates of first publication and

 * either this permission notice or a reference to

 * http://oss.sgi.com/projects/FreeB/

 * 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

 * SILICON GRAPHICS, INC. 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 Silicon Graphics, Inc.

 * shall not be used in advertising or otherwise to promote the sale, use or

 * other dealings in this Software without prior written authorization from

 * Silicon Graphics, Inc.

 */

#include "glxclient.h"

#include "indirect.h"

#if !defined(__GNUC__)

#  define __builtin_expect(x, y) x

#endif

/**

 * Send glPixelStore command to the server

 *

 * \param gc     Current GLX context

 * \param sop    Either \c X_GLsop_PixelStoref or \c X_GLsop_PixelStorei

 * \param pname  Selector of which pixel parameter is to be set.

 * \param param  Value that \c pname is set to.

 *

 * \sa __indirect_glPixelStorei,  __indirect_glPixelStoref

 */

static void

send_PixelStore(struct glx_context * gc, unsigned sop, GLenum pname,

                const void *param)

{

   Display *const dpy = gc->currentDpy;

   const GLuint cmdlen = 8;

   if (__builtin_expect(dpy != NULL, 1)) {

      GLubyte const *pc = __glXSetupSingleRequest(gc, sop, cmdlen);

      (void) memcpy((void *) (pc + 0), (void *) (&pname), 4);

      (void) memcpy((void *) (pc + 4), param, 4);

      UnlockDisplay(dpy);

      SyncHandle();

   }

   return;

}

/*

** Specify parameters that control the storage format of pixel arrays.

*/

void

__indirect_glPixelStoref(GLenum pname, GLfloat param)

{

   struct glx_context *gc = __glXGetCurrentContext();

   __GLXattribute *state = gc->client_state_private;

   Display *dpy = gc->currentDpy;

   GLuint a;

   if (!dpy)

      return;

   switch (pname) {

   case GL_PACK_ROW_LENGTH:

      a = (GLuint) (param + 0.5);

      if (((GLint) a) < 0) {

         __glXSetError(gc, GL_INVALID_VALUE);

         return;

      }

      state->storePack.rowLength = a;

      break;

   case GL_PACK_IMAGE_HEIGHT:

      a = (GLuint) (param + 0.5);

      if (((GLint) a) < 0) {

         __glXSetError(gc, GL_INVALID_VALUE);

         return;

      }

      state->storePack.imageHeight = a;

      break;

   case GL_PACK_SKIP_ROWS:

      a = (GLuint) (param + 0.5);

      if (((GLint) a) < 0) {

         __glXSetError(gc, GL_INVALID_VALUE);

         return;

      }

      state->storePack.skipRows = a;

      break;

   case GL_PACK_SKIP_PIXELS:

      a = (GLuint) (param + 0.5);

      if (((GLint) a) < 0) {

         __glXSetError(gc, GL_INVALID_VALUE);

         return;

      }

      state->storePack.skipPixels = a;

      break;

   case GL_PACK_SKIP_IMAGES:

      a = (GLuint) (param + 0.5);

      if (((GLint) a) < 0) {

         __glXSetError(gc, GL_INVALID_VALUE);

         return;

      }

      state->storePack.skipImages = a;

      break;

   case GL_PACK_ALIGNMENT:

      a = (GLint) (param + 0.5);

      switch (a) {

      case 1:

      case 2:

      case 4:

      case 8:

         state->storePack.alignment = a;

         break;

      default:

         __glXSetError(gc, GL_INVALID_VALUE);

         return;

      }

      break;

   case GL_PACK_SWAP_BYTES:

      state->storePack.swapEndian = (param != 0);

      break;

   case GL_PACK_LSB_FIRST:

      state->storePack.lsbFirst = (param != 0);

      break;

   case GL_UNPACK_ROW_LENGTH:

      a = (GLuint) (param + 0.5);

      if (((GLint) a) < 0) {

         __glXSetError(gc, GL_INVALID_VALUE);

         return;

      }

      state->storeUnpack.rowLength = a;

      break;

   case GL_UNPACK_IMAGE_HEIGHT:

      a = (GLuint) (param + 0.5);

      if (((GLint) a) < 0) {

         __glXSetError(gc, GL_INVALID_VALUE);

         return;

      }

      state->storeUnpack.imageHeight = a;

      break;

   case GL_UNPACK_SKIP_ROWS:

      a = (GLuint) (param + 0.5);

      if (((GLint) a) < 0) {

         __glXSetError(gc, GL_INVALID_VALUE);

         return;

      }

      state->storeUnpack.skipRows = a;

      break;

   case GL_UNPACK_SKIP_PIXELS:

      a = (GLuint) (param + 0.5);

      if (((GLint) a) < 0) {

         __glXSetError(gc, GL_INVALID_VALUE);

         return;

      }

      state->storeUnpack.skipPixels = a;

      break;

   case GL_UNPACK_SKIP_IMAGES:

      a = (GLuint) (param + 0.5);

      if (((GLint) a) < 0) {

         __glXSetError(gc, GL_INVALID_VALUE);

         return;

      }

      state->storeUnpack.skipImages = a;

      break;

   case GL_UNPACK_ALIGNMENT:

      a = (GLint) (param + 0.5);

      switch (a) {

      case 1:

      case 2:

      case 4:

      case 8:

         state->storeUnpack.alignment = a;

         break;

      default:

         __glXSetError(gc, GL_INVALID_VALUE);

         return;

      }

      break;

   case GL_UNPACK_SWAP_BYTES:

      state->storeUnpack.swapEndian = (param != 0);

      break;

   case GL_UNPACK_LSB_FIRST:

      state->storeUnpack.lsbFirst = (param != 0);

      break;

      /* Group all of the pixel store modes that need to be sent to the

       * server here.  Care must be used to only send modes to the server that

       * won't affect the size of the data sent to or received from the

       * server.  GL_PACK_INVERT_MESA is safe in this respect, but other,

       * future modes may not be.

       */

   case GL_PACK_INVERT_MESA:

      send_PixelStore(gc, X_GLsop_PixelStoref, pname, ¶m);

      break;

   default:

      __glXSetError(gc, GL_INVALID_ENUM);

      break;

   }

}

void

__indirect_glPixelStorei(GLenum pname, GLint param)

{

   struct glx_context *gc = __glXGetCurrentContext();

   __GLXattribute *state = gc->client_state_private;

   Display *dpy = gc->currentDpy;

   if (!dpy)

      return;

   switch (pname) {

   case GL_PACK_ROW_LENGTH:

      if (param < 0) {

         __glXSetError(gc, GL_INVALID_VALUE);

         return;

      }

      state->storePack.rowLength = param;

      break;

   case GL_PACK_IMAGE_HEIGHT:

      if (param < 0) {

         __glXSetError(gc, GL_INVALID_VALUE);

         return;

      }

      state->storePack.imageHeight = param;

      break;

   case GL_PACK_SKIP_ROWS:

      if (param < 0) {

         __glXSetError(gc, GL_INVALID_VALUE);

         return;

      }

      state->storePack.skipRows = param;

      break;

   case GL_PACK_SKIP_PIXELS:

      if (param < 0) {

         __glXSetError(gc, GL_INVALID_VALUE);

         return;

      }

      state->storePack.skipPixels = param;

      break;

   case GL_PACK_SKIP_IMAGES:

      if (param < 0) {

         __glXSetError(gc, GL_INVALID_VALUE);

         return;

      }

      state->storePack.skipImages = param;

      break;

   case GL_PACK_ALIGNMENT:

      switch (param) {

      case 1:

      case 2:

      case 4:

      case 8:

         state->storePack.alignment = param;

         break;

      default:

         __glXSetError(gc, GL_INVALID_VALUE);

         return;

      }

      break;

   case GL_PACK_SWAP_BYTES:

      state->storePack.swapEndian = (param != 0);

      break;

   case GL_PACK_LSB_FIRST:

      state->storePack.lsbFirst = (param != 0);

      break;

   case GL_UNPACK_ROW_LENGTH:

      if (param < 0) {

         __glXSetError(gc, GL_INVALID_VALUE);

         return;

      }

      state->storeUnpack.rowLength = param;

      break;

   case GL_UNPACK_IMAGE_HEIGHT:

      if (param < 0) {

         __glXSetError(gc, GL_INVALID_VALUE);

         return;

      }

      state->storeUnpack.imageHeight = param;

      break;

   case GL_UNPACK_SKIP_ROWS:

      if (param < 0) {

         __glXSetError(gc, GL_INVALID_VALUE);

         return;

      }

      state->storeUnpack.skipRows = param;

      break;

   case GL_UNPACK_SKIP_PIXELS:

      if (param < 0) {

         __glXSetError(gc, GL_INVALID_VALUE);

         return;

      }

      state->storeUnpack.skipPixels = param;

      break;

   case GL_UNPACK_SKIP_IMAGES:

      if (param < 0) {

         __glXSetError(gc, GL_INVALID_VALUE);

         return;

      }

      state->storeUnpack.skipImages = param;

      break;

   case GL_UNPACK_ALIGNMENT:

      switch (param) {

      case 1:

      case 2:

      case 4:

      case 8:

         state->storeUnpack.alignment = param;

         break;

      default:

         __glXSetError(gc, GL_INVALID_VALUE);

         return;

      }

      break;

   case GL_UNPACK_SWAP_BYTES:

      state->storeUnpack.swapEndian = (param != 0);

      break;

   case GL_UNPACK_LSB_FIRST:

      state->storeUnpack.lsbFirst = (param != 0);

      break;

      /* Group all of the pixel store modes that need to be sent to the

       * server here.  Care must be used to only send modes to the server that

       * won't affect the size of the data sent to or received from the

       * server.  GL_PACK_INVERT_MESA is safe in this respect, but other,

       * future modes may not be.

       */

   case GL_PACK_INVERT_MESA:

      send_PixelStore(gc, X_GLsop_PixelStorei, pname, ¶m);

      break;

   default:

      __glXSetError(gc, GL_INVALID_ENUM);

      break;

   }

}