+++ /dev/null
-/**************************************************************************
- *
- * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
- * 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, sub license, 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 and this permission notice (including the
- * next paragraph) 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 NON-INFRINGEMENT.
- * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.
- *
- **************************************************************************/
-
-/**
- * @file
- * Stream implementation for the Windows Display driver.
- */
-
-#include "pipe/p_config.h"
-
-#if defined(PIPE_SUBSYSTEM_WINDOWS_DISPLAY)
-
-#include <windows.h>
-#include <winddi.h>
-
-#include "util/u_memory.h"
-#include "util/u_string.h"
-
-#include "u_stream.h"
-
-
-#define MAP_FILE_SIZE (4*1024*1024)
-
-
-struct util_stream
-{
- char filename[MAX_PATH + 1];
- WCHAR wFileName[MAX_PATH + 1];
- boolean growable;
- size_t map_size;
- ULONG_PTR iFile;
- char *pMap;
- size_t written;
- unsigned suffix;
-};
-
-
-static INLINE boolean
-util_stream_map(struct util_stream *stream)
-{
- ULONG BytesInUnicodeString;
- static char filename[MAX_PATH + 1];
- unsigned filename_len;
-
- if(stream->growable)
- filename_len = util_snprintf(filename,
- sizeof(filename),
- "%s.%04x",
- stream->filename,
- stream->suffix++);
- else
- filename_len = util_snprintf(filename,
- sizeof(filename),
- "%s",
- stream->filename);
-
- EngMultiByteToUnicodeN(
- stream->wFileName,
- sizeof(stream->wFileName),
- &BytesInUnicodeString,
- filename,
- filename_len);
-
- stream->pMap = EngMapFile(stream->wFileName, stream->map_size, &stream->iFile);
- if(!stream->pMap)
- return FALSE;
-
- memset(stream->pMap, 0, stream->map_size);
- stream->written = 0;
-
- return TRUE;
-}
-
-
-static INLINE void
-util_stream_unmap(struct util_stream *stream)
-{
- EngUnmapFile(stream->iFile);
- if(stream->written < stream->map_size) {
- /* Truncate file size */
- stream->pMap = EngMapFile(stream->wFileName, stream->written, &stream->iFile);
- if(stream->pMap)
- EngUnmapFile(stream->iFile);
- }
-
- stream->pMap = NULL;
-}
-
-
-static INLINE void
-util_stream_full_qualified_filename(char *dst, size_t size, const char *src)
-{
- boolean need_drive, need_root;
-
- if((('A' <= src[0] && src[0] <= 'Z') || ('a' <= src[0] && src[0] <= 'z')) && src[1] == ':') {
- need_drive = FALSE;
- need_root = src[2] == '\\' ? FALSE : TRUE;
- }
- else {
- need_drive = TRUE;
- need_root = src[0] == '\\' ? FALSE : TRUE;
- }
-
- util_snprintf(dst, size,
- "\\??\\%s%s%s",
- need_drive ? "C:" : "",
- need_root ? "\\" : "",
- src);
-}
-
-
-struct util_stream *
-util_stream_create(const char *filename, size_t max_size)
-{
- struct util_stream *stream;
-
- stream = CALLOC_STRUCT(util_stream);
- if(!stream)
- goto error1;
-
- util_stream_full_qualified_filename(stream->filename,
- sizeof(stream->filename),
- filename);
-
- if(max_size) {
- stream->growable = FALSE;
- stream->map_size = max_size;
- }
- else {
- stream->growable = TRUE;
- stream->map_size = MAP_FILE_SIZE;
- }
-
- if(!util_stream_map(stream))
- goto error2;
-
- return stream;
-
-error2:
- FREE(stream);
-error1:
- return NULL;
-}
-
-
-static INLINE void
-util_stream_copy(struct util_stream *stream, const char *data, size_t size)
-{
- assert(stream->written + size <= stream->map_size);
- memcpy(stream->pMap + stream->written, data, size);
- stream->written += size;
-}
-
-
-boolean
-util_stream_write(struct util_stream *stream, const void *data, size_t size)
-{
- if(!stream)
- return FALSE;
-
- if(!stream->pMap)
- return FALSE;
-
- while(stream->written + size > stream->map_size) {
- size_t step = stream->map_size - stream->written;
- util_stream_copy(stream, data, step);
- data = (const char *)data + step;
- size -= step;
-
- util_stream_unmap(stream);
- if(!stream->growable || !util_stream_map(stream))
- return FALSE;
- }
-
- util_stream_copy(stream, data, size);
-
- return TRUE;
-}
-
-
-void
-util_stream_flush(struct util_stream *stream)
-{
- (void)stream;
-}
-
-
-void
-util_stream_close(struct util_stream *stream)
-{
- if(!stream)
- return;
-
- util_stream_unmap(stream);
-
- FREE(stream);
-}
-
-
-#endif
projects / mesa.git / blobdiff