Mercurial > sdl-ios-xcode
view include/SDL_config_symbian.h @ 4216:5b99971a27b4 SDL-1.2
Fixed bug #698
Hans de Goede 2009-02-13 01:10:52 PST
Since the new "glitch free" version of pulseaudio (used in Fedora 10 amongst
others), the sound of SDL using apps (like a simple playmus call) has been
crackling.
While looking in to fixing this I noticed that the current pulseaudio code in
SDL uses pa_simple. However pa_simple uses a thread to pump pulseaudio events
and ipc, given that SDL already has its own thread for audio handling this is
clearly suboptimal, leading to unnecessary context switching IPC, etc. Also
pa_simple does not allow one to implement the WaitAudio() callback for SDL
audiodrivers properly.
Given that my work is mostly a rewrite (although some original pieces remain)
I'm attaching the new .c and .h file, as that is easier to review then the huge
diff.
Let me know if you also want the diff.
This new version has the following features:
-no longer use an additional thread next to the SDL sound thread
-do not crackle with glitch free audio
-when used with a newer pulse, which does glitch free audio, the total latency
is
the same as with the alsa driver
-proper WaitAudio() implementation, saving another mixlen worth of latency
-adds a WaitDone() implementation
This patch has been written in consultancy with Lennart Poetering (the
pulseaudio author) and has been reviewed by him for correct use of the pa API.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Mon, 21 Sep 2009 09:27:08 +0000 |
parents | a1b03ba2fcd0 |
children |
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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 */ /* Symbian version Markus Mertama */ #ifndef _SDL_CONFIG_SYMBIAN_H #define _SDL_CONFIG_SYMBIAN_H #include "SDL_platform.h" /* This is the minimal configuration that can be used to build SDL */ #include <stdarg.h> #include <stddef.h> #ifdef __GCCE__ #define SYMBIAN32_GCCE #endif #ifndef _SIZE_T_DEFINED typedef unsigned int size_t; #endif #ifndef _INTPTR_T_DECLARED typedef unsigned int uintptr_t; #endif #ifndef _INT8_T_DECLARED typedef signed char int8_t; #endif #ifndef _UINT8_T_DECLARED typedef unsigned char uint8_t; #endif #ifndef _INT16_T_DECLARED typedef signed short int16_t; #endif #ifndef _UINT16_T_DECLARED typedef unsigned short uint16_t; #endif #ifndef _INT32_T_DECLARED typedef signed int int32_t; #endif #ifndef _UINT32_T_DECLARED typedef unsigned int uint32_t; #endif #ifndef _INT64_T_DECLARED typedef signed long long int64_t; #endif #ifndef _UINT64_T_DECLARED typedef unsigned long long uint64_t; #endif #define SDL_AUDIO_DRIVER_EPOCAUDIO 1 /* Enable the stub cdrom driver (src/cdrom/dummy/\*.c) */ #define SDL_CDROM_DISABLED 1 /* Enable the stub joystick driver (src/joystick/dummy/\*.c) */ #define SDL_JOYSTICK_DISABLED 1 /* Enable the stub shared object loader (src/loadso/dummy/\*.c) */ #define SDL_LOADSO_DISABLED 1 #define SDL_THREAD_SYMBIAN 1 #define SDL_VIDEO_DRIVER_EPOC 1 #define SDL_VIDEO_OPENGL 0 #define SDL_HAS_64BIT_TYPE 1 #define HAVE_LIBC 1 #define HAVE_STDIO_H 1 #define STDC_HEADERS 1 #define HAVE_STRING_H 1 #define HAVE_CTYPE_H 1 #define HAVE_MATH_H 1 #define HAVE_MALLOC 1 #define HAVE_CALLOC 1 #define HAVE_REALLOC 1 #define HAVE_FREE 1 /*#define HAVE_ALLOCA 1*/ #define HAVE_QSORT 1 #define HAVE_ABS 1 #define HAVE_MEMSET 1 #define HAVE_MEMCPY 1 #define HAVE_MEMMOVE 1 #define HAVE_MEMCMP 1 #define HAVE_STRLEN 1 #define HAVE__STRUPR 1 #define HAVE_STRCHR 1 #define HAVE_STRRCHR 1 #define HAVE_STRSTR 1 #define HAVE_ITOA 1 #define HAVE_STRTOL 1 #define HAVE_STRTOUL 1 #define HAVE_STRTOLL 1 #define HAVE_STRTOD 1 #define HAVE_ATOI 1 #define HAVE_ATOF 1 #define HAVE_STRCMP 1 #define HAVE_STRNCMP 1 /*#define HAVE__STRICMP 1*/ #define HAVE__STRNICMP 1 #define HAVE_SSCANF 1 #define HAVE_STDARG_H 1 #define HAVE_STDDEF_H 1 #endif /* _SDL_CONFIG_SYMBIAN_H */