Mercurial > sdl-ios-xcode
view include/SDL_rwops.h @ 4211:3ce5bfddbaf6 SDL-1.2
Fixed bug #572
Please merge this patch for the PA driver in SDL.
http://0pointer.de/public/sdl-pulse-rework.patch
This patch:
- fixes buffering (i.e. reduces number of "fragments" to 2, doesn't defer
filling up of the buffer until the entire buffer ran completely empty.)
- drops $PASERVER and $PADEVICE env var support, since this is a duplication of
$PULSE_SERVER and $PULSE_SINK which the PA libs honor anyway.
This fixes the sound issues in all games I tested.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Mon, 21 Sep 2009 08:03:00 +0000 |
parents | bd91db0b0b5d |
children | 4c4113c2162c |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2009 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Sam Lantinga slouken@libsdl.org */ /* This file provides a general interface for SDL to read and write data sources. It can easily be extended to files, memory, etc. */ #ifndef _SDL_rwops_h #define _SDL_rwops_h #include "SDL_stdinc.h" #include "SDL_error.h" #include "begin_code.h" /* Set up for C function definitions, even when using C++ */ #ifdef __cplusplus extern "C" { #endif /* This is the read/write operation structure -- very basic */ typedef struct SDL_RWops { /* Seek to 'offset' relative to whence, one of stdio's whence values: SEEK_SET, SEEK_CUR, SEEK_END Returns the final offset in the data source. */ int (SDLCALL *seek)(struct SDL_RWops *context, int offset, int whence); /* Read up to 'maxnum' objects each of size 'size' from the data source to the area pointed at by 'ptr'. Returns the number of objects read, or -1 if the read failed. */ int (SDLCALL *read)(struct SDL_RWops *context, void *ptr, int size, int maxnum); /* Write exactly 'num' objects each of size 'objsize' from the area pointed at by 'ptr' to data source. Returns 'num', or -1 if the write failed. */ int (SDLCALL *write)(struct SDL_RWops *context, const void *ptr, int size, int num); /* Close and free an allocated SDL_FSops structure */ int (SDLCALL *close)(struct SDL_RWops *context); Uint32 type; union { #if defined(__WIN32__) && !defined(__SYMBIAN32__) struct { int append; void *h; struct { void *data; int size; int left; } buffer; } win32io; #endif #ifdef HAVE_STDIO_H struct { int autoclose; FILE *fp; } stdio; #endif struct { Uint8 *base; Uint8 *here; Uint8 *stop; } mem; struct { void *data1; } unknown; } hidden; } SDL_RWops; /* Functions to create SDL_RWops structures from various data sources */ extern DECLSPEC SDL_RWops * SDLCALL SDL_RWFromFile(const char *file, const char *mode); #ifdef HAVE_STDIO_H extern DECLSPEC SDL_RWops * SDLCALL SDL_RWFromFP(FILE *fp, int autoclose); #endif extern DECLSPEC SDL_RWops * SDLCALL SDL_RWFromMem(void *mem, int size); extern DECLSPEC SDL_RWops * SDLCALL SDL_RWFromConstMem(const void *mem, int size); extern DECLSPEC SDL_RWops * SDLCALL SDL_AllocRW(void); extern DECLSPEC void SDLCALL SDL_FreeRW(SDL_RWops *area); #define RW_SEEK_SET 0 /* Seek from the beginning of data */ #define RW_SEEK_CUR 1 /* Seek relative to current read point */ #define RW_SEEK_END 2 /* Seek relative to the end of data */ /* Macros to easily read and write from an SDL_RWops structure */ #define SDL_RWseek(ctx, offset, whence) (ctx)->seek(ctx, offset, whence) #define SDL_RWtell(ctx) (ctx)->seek(ctx, 0, RW_SEEK_CUR) #define SDL_RWread(ctx, ptr, size, n) (ctx)->read(ctx, ptr, size, n) #define SDL_RWwrite(ctx, ptr, size, n) (ctx)->write(ctx, ptr, size, n) #define SDL_RWclose(ctx) (ctx)->close(ctx) /* Read an item of the specified endianness and return in native format */ extern DECLSPEC Uint16 SDLCALL SDL_ReadLE16(SDL_RWops *src); extern DECLSPEC Uint16 SDLCALL SDL_ReadBE16(SDL_RWops *src); extern DECLSPEC Uint32 SDLCALL SDL_ReadLE32(SDL_RWops *src); extern DECLSPEC Uint32 SDLCALL SDL_ReadBE32(SDL_RWops *src); extern DECLSPEC Uint64 SDLCALL SDL_ReadLE64(SDL_RWops *src); extern DECLSPEC Uint64 SDLCALL SDL_ReadBE64(SDL_RWops *src); /* Write an item of native format to the specified endianness */ extern DECLSPEC int SDLCALL SDL_WriteLE16(SDL_RWops *dst, Uint16 value); extern DECLSPEC int SDLCALL SDL_WriteBE16(SDL_RWops *dst, Uint16 value); extern DECLSPEC int SDLCALL SDL_WriteLE32(SDL_RWops *dst, Uint32 value); extern DECLSPEC int SDLCALL SDL_WriteBE32(SDL_RWops *dst, Uint32 value); extern DECLSPEC int SDLCALL SDL_WriteLE64(SDL_RWops *dst, Uint64 value); extern DECLSPEC int SDLCALL SDL_WriteBE64(SDL_RWops *dst, Uint64 value); /* Ends C function definitions when using C++ */ #ifdef __cplusplus } #endif #include "close_code.h" #endif /* _SDL_rwops_h */