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89 lines
1.9 KiB
89 lines
1.9 KiB
5 years ago
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#include "storm_sdl_rw.h"
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#include "all.h"
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#include "../3rdParty/Storm/Source/storm.h"
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#include "../Source/engine.h"
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namespace dvl {
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static HANDLE SFileRw_GetHandle(struct SDL_RWops *context)
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{
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return (HANDLE)context->hidden.unknown.data1;
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}
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static void SFileRw_SetHandle(struct SDL_RWops *context, HANDLE handle)
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{
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context->hidden.unknown.data1 = handle;
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}
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#ifndef USE_SDL1
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static Sint64 SFileRw_size(struct SDL_RWops *context)
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{
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DWORD result;
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if (!SFileGetFileSize(SFileRw_GetHandle(context), &result))
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return -1;
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return result;
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}
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#endif
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#ifndef USE_SDL1
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static Sint64 SFileRw_seek(struct SDL_RWops *context, Sint64 offset, int whence)
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#else
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static int SFileRw_seek(struct SDL_RWops *context, int offset, int whence)
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#endif
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{
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DWORD swhence;
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switch (whence) {
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case RW_SEEK_SET:
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swhence = DVL_FILE_BEGIN;
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break;
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case RW_SEEK_CUR:
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swhence = DVL_FILE_CURRENT;
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break;
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case RW_SEEK_END:
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swhence = DVL_FILE_END;
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break;
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default:
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return -1;
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}
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return SFileSetFilePointer(SFileRw_GetHandle(context), offset, NULL, swhence);
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}
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#ifndef USE_SDL1
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static size_t SFileRw_read(struct SDL_RWops *context, void *ptr, size_t size, size_t maxnum)
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#else
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static int SFileRw_read(struct SDL_RWops *context, void *ptr, int size, int maxnum)
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#endif
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{
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DWORD num_read = 0;
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SFileReadFile(SFileRw_GetHandle(context), ptr, maxnum * size, &num_read, NULL);
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return num_read;
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}
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static int SFileRw_close(struct SDL_RWops *context)
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{
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mem_free_dbg(context);
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return 0;
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}
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SDL_RWops *SFileRw_FromStormHandle(HANDLE handle)
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{
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SDL_RWops *result = (SDL_RWops *)DiabloAllocPtr(sizeof(SDL_RWops));
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#ifndef USE_SDL1
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result->size = &SFileRw_size;
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result->type = SDL_RWOPS_UNKNOWN;
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#else
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result->type = 0;
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#endif
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result->seek = &SFileRw_seek;
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result->read = &SFileRw_read;
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result->write = NULL;
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result->close = &SFileRw_close;
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SFileRw_SetHandle(result, handle);
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return result;
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}
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} // namespace dvl
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