Implemented dummy audio driver.
Fixes Bugzilla #161. --HG-- extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%401536
This commit is contained in:
Ryan C. Gordon
parent
2e50f15bed
commit
66d3d81854
15 changed files with 496 additions and 40 deletions
18
configure.in
18
configure.in
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@ -533,6 +533,18 @@ AC_HELP_STRING([--enable-diskaudio], [support the disk writer audio driver [defa
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fi
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}
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dnl rcg03142006 See if the user wants the dummy audio driver...
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CheckDummyAudio()
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{
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AC_ARG_ENABLE(dummyaudio,
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AC_HELP_STRING([--enable-dummyaudio], [support the dummy audio driver [default=yes]]),
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, enable_dummyaudio=yes)
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if test x$enable_audio = xyes -a x$enable_dummyaudio = xyes; then
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AC_DEFINE(SDL_AUDIO_DRIVER_DUMMY)
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SOURCES="$SOURCES $srcdir/src/audio/dummy/*.c"
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fi
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}
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dnl Set up the Atari Audio driver
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CheckAtariAudio()
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{
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@ -1915,6 +1927,7 @@ case "$target" in
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esac
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CheckDummyVideo
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CheckDiskAudio
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CheckDummyAudio
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CheckDLOPEN
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CheckNASM
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CheckAltivec
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@ -2029,6 +2042,7 @@ case "$target" in
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ARCH=qnx
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CheckDummyVideo
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CheckDiskAudio
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CheckDummyAudio
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# CheckNASM
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CheckDLOPEN
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CheckNAS
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@ -2069,6 +2083,7 @@ case "$target" in
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fi
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CheckDummyVideo
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CheckDiskAudio
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CheckDummyAudio
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CheckWIN32
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CheckWIN32GL
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CheckDIRECTX
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@ -2131,6 +2146,7 @@ case "$target" in
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ac_default_prefix=/boot/develop/tools/gnupro
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CheckDummyVideo
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CheckDiskAudio
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CheckDummyAudio
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CheckNASM
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CheckBWINDOW
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CheckBeGL
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@ -2183,6 +2199,7 @@ case "$target" in
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ARCH=macosx
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CheckDummyVideo
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CheckDiskAudio
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CheckDummyAudio
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CheckDLOPEN
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CheckCOCOA
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CheckCARBON
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@ -2249,6 +2266,7 @@ case "$target" in
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ARCH=mint
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CheckDummyVideo
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CheckDiskAudio
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CheckDummyAudio
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CheckAtariBiosEvent
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CheckAtariXbiosVideo
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CheckAtariGemVideo
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@ -1,3 +1,4 @@
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/* include/SDL_config.h. Generated by configure. */
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/*
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SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2006 Sam Lantinga
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@ -23,56 +24,276 @@
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#ifndef _SDL_config_h
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#define _SDL_config_h
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/* This is a set of defines to configure the SDL features */
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/* General platform specific identifiers */
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#include "SDL_platform.h"
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/* Add any platform that doesn't build using the configure system */
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#if defined(__AMIGA__)
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#include "SDL_config_amiga.h"
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#elif defined(__DREAMCAST__)
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#include "SDL_config_dreamcast.h"
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#elif defined(__MACOS__)
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#include "SDL_config_macos.h"
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#elif defined(__MACOSX__)
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#include "SDL_config_macosx.h"
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#elif defined(__WIN32__)
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#include "SDL_config_win32.h"
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#elif defined(__OS2__)
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#include "SDL_config_os2.h"
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/* C language features */
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/* #undef const */
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/* #undef inline */
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/* #undef volatile */
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/* C datatypes */
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/* #undef size_t */
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/* #undef int8_t */
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/* #undef uint8_t */
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/* #undef int16_t */
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/* #undef uint16_t */
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/* #undef int32_t */
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/* #undef uint32_t */
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/* #undef int64_t */
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/* #undef uint64_t */
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/* #undef uintptr_t */
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#define SDL_HAS_64BIT_TYPE 1
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/* Endianness */
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#define SDL_BYTEORDER 1234
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/* Comment this if you want to build without any C library requirements */
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#define HAVE_LIBC 1
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#if HAVE_LIBC
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/* Useful headers */
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#define HAVE_ALLOCA_H 1
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#define HAVE_SYS_TYPES_H 1
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#define HAVE_STDIO_H 1
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#define STDC_HEADERS 1
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#define HAVE_STDLIB_H 1
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#define HAVE_STDARG_H 1
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#define HAVE_MALLOC_H 1
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#define HAVE_MEMORY_H 1
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#define HAVE_STRING_H 1
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#define HAVE_STRINGS_H 1
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#define HAVE_INTTYPES_H 1
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#define HAVE_STDINT_H 1
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#define HAVE_CTYPE_H 1
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#define HAVE_MATH_H 1
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#define HAVE_ICONV_H 1
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#define HAVE_SIGNAL_H 1
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/* #undef HAVE_ALTIVEC_H */
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/* C library functions */
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#define HAVE_MALLOC 1
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#define HAVE_CALLOC 1
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#define HAVE_REALLOC 1
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#define HAVE_FREE 1
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#define HAVE_ALLOCA 1
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#ifndef _WIN32 /* Don't use C runtime versions of these on Windows */
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#define HAVE_GETENV 1
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#define HAVE_PUTENV 1
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#define HAVE_UNSETENV 1
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#endif
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#define HAVE_QSORT 1
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#define HAVE_ABS 1
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#define HAVE_BCOPY 1
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#define HAVE_MEMSET 1
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#define HAVE_MEMCPY 1
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#define HAVE_MEMMOVE 1
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#define HAVE_MEMCMP 1
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#define HAVE_STRLEN 1
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/* #undef HAVE_STRLCPY */
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/* #undef HAVE_STRLCAT */
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#define HAVE_STRDUP 1
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/* #undef HAVE__STRREV */
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/* #undef HAVE__STRUPR */
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/* #undef HAVE__STRLWR */
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/* #undef HAVE_INDEX */
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/* #undef HAVE_RINDEX */
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#define HAVE_STRCHR 1
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#define HAVE_STRRCHR 1
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#define HAVE_STRSTR 1
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/* #undef HAVE_ITOA */
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/* #undef HAVE__LTOA */
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/* #undef HAVE__UITOA */
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/* #undef HAVE__ULTOA */
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#define HAVE_STRTOL 1
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#define HAVE_STRTOUL 1
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/* #undef HAVE__I64TOA */
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/* #undef HAVE__UI64TOA */
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#define HAVE_STRTOLL 1
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#define HAVE_STRTOULL 1
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#define HAVE_STRTOD 1
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#define HAVE_ATOI 1
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#define HAVE_ATOF 1
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#define HAVE_STRCMP 1
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#define HAVE_STRNCMP 1
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/* #undef HAVE__STRICMP */
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#define HAVE_STRCASECMP 1
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/* #undef HAVE__STRNICMP */
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#define HAVE_STRNCASECMP 1
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#define HAVE_SSCANF 1
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#define HAVE_SNPRINTF 1
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#define HAVE_VSNPRINTF 1
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#define HAVE_ICONV 1
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#define HAVE_SIGACTION 1
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#define HAVE_SETJMP 1
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#define HAVE_NANOSLEEP 1
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/* #undef HAVE_CLOCK_GETTIME */
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#define HAVE_DLVSYM 1
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#else
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/* This is the minimal configuration that can be used to build SDL */
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/* We may need some replacement for stdarg.h here */
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#include <stdarg.h>
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#endif /* HAVE_LIBC */
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typedef signed char int8_t;
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typedef unsigned char uint8_t;
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typedef signed short int16_t;
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typedef unsigned short uint16_t;
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typedef signed int int32_t;
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typedef unsigned int uint32_t;
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typedef unsigned int size_t;
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typedef unsigned long uintptr_t;
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/* Allow disabling of core subsystems */
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/* #undef SDL_AUDIO_DISABLED */
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/* #undef SDL_CDROM_DISABLED */
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/* #undef SDL_CPUINFO_DISABLED */
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/* #undef SDL_EVENTS_DISABLED */
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/* #undef SDL_FILE_DISABLED */
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/* #undef SDL_JOYSTICK_DISABLED */
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/* #undef SDL_LOADSO_DISABLED */
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/* #undef SDL_THREADS_DISABLED */
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/* #undef SDL_TIMERS_DISABLED */
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/* #undef SDL_VIDEO_DISABLED */
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/* Enable the disk audio driver (src/audio/disk/\*.c) */
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#define SDL_AUDIO_DRIVER_DISK 1
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/* Enable various audio drivers */
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/* #undef SDL_AUDIO_DRIVER_AHI */
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#define SDL_AUDIO_DRIVER_ALSA 1
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#define SDL_AUDIO_DRIVER_ALSA_DYNAMIC "libasound.so.2"
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/* #undef SDL_AUDIO_DRIVER_ARTS */
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/* #undef SDL_AUDIO_DRIVER_ARTS_DYNAMIC */
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/* #undef SDL_AUDIO_DRIVER_BAUDIO */
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/* #undef SDL_AUDIO_DRIVER_COREAUDIO */
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/* #undef SDL_AUDIO_DRIVER_DART */
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/* #undef SDL_AUDIO_DRIVER_DC */
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#define SDL_AUDIO_DRIVER_DISK 1
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#define SDL_AUDIO_DRIVER_DUMMY 1
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/* #undef SDL_AUDIO_DRIVER_DMEDIA */
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/* #undef SDL_AUDIO_DRIVER_DSOUND */
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/* #undef SDL_AUDIO_DRIVER_ESD */
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/* #undef SDL_AUDIO_DRIVER_ESD_DYNAMIC */
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/* #undef SDL_AUDIO_DRIVER_MINT */
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/* #undef SDL_AUDIO_DRIVER_MMEAUDIO */
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/* #undef SDL_AUDIO_DRIVER_NAS */
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/* #undef SDL_AUDIO_DRIVER_OPENBSD */
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#define SDL_AUDIO_DRIVER_OSS 1
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/* #undef SDL_AUDIO_DRIVER_OSS_SOUNDCARD_H */
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/* #undef SDL_AUDIO_DRIVER_PAUD */
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/* #undef SDL_AUDIO_DRIVER_QNXNTO */
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/* #undef SDL_AUDIO_DRIVER_SNDMGR */
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/* #undef SDL_AUDIO_DRIVER_SUNAUDIO */
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/* #undef SDL_AUDIO_DRIVER_WAVEOUT */
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/* Enable the stub cdrom driver (src/cdrom/dummy/\*.c) */
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#define SDL_CDROM_DISABLED 1
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/* Enable various cdrom drivers */
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/* #undef SDL_CDROM_AIX */
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/* #undef SDL_CDROM_BEOS */
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/* #undef SDL_CDROM_BSDI */
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/* #undef SDL_CDROM_DC */
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/* #undef SDL_CDROM_DUMMY */
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/* #undef SDL_CDROM_FREEBSD */
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#define SDL_CDROM_LINUX 1
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/* #undef SDL_CDROM_MACOS */
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/* #undef SDL_CDROM_MACOSX */
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/* #undef SDL_CDROM_MINT */
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/* #undef SDL_CDROM_OPENBSD */
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/* #undef SDL_CDROM_OS2 */
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/* #undef SDL_CDROM_OSF */
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/* #undef SDL_CDROM_QNX */
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/* #undef SDL_CDROM_WIN32 */
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/* Enable the stub joystick driver (src/joystick/dummy/\*.c) */
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#define SDL_JOYSTICK_DISABLED 1
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/* Enable various input drivers */
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/* #undef SDL_INPUT_TSLIB */
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/* #undef SDL_JOYSTICK_AMIGA */
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/* #undef SDL_JOYSTICK_BEOS */
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/* #undef SDL_JOYSTICK_DC */
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/* #undef SDL_JOYSTICK_DUMMY */
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/* #undef SDL_JOYSTICK_IOKIT */
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#define SDL_JOYSTICK_LINUX 1
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/* #undef SDL_JOYSTICK_LINUXEV */
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/* #undef SDL_JOYSTICK_MACOS */
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/* #undef SDL_JOYSTICK_MINT */
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/* #undef SDL_JOYSTICK_OS2 */
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/* #undef SDL_JOYSTICK_RISCOS */
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/* #undef SDL_JOYSTICK_WINMM */
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/* #undef SDL_JOYSTICK_USBHID */
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/* Enable the stub shared object loader (src/loadso/dummy/\*.c) */
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#define SDL_LOADSO_DISABLED 1
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/* Enable various shared object loading systems */
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/* #undef SDL_LOADSO_BEOS */
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/* #undef SDL_LOADSO_DLCOMPAT */
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#define SDL_LOADSO_DLOPEN 1
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/* #undef SDL_LOADSO_LDG */
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/* #undef SDL_LOADSO_MACOS */
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/* #undef SDL_LOADSO_OS2 */
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/* #undef SDL_LOADSO_WIN32 */
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/* Enable the stub thread support (src/thread/generic/\*.c) */
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#define SDL_THREADS_DISABLED 1
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/* Enable various threading systems */
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/* #undef SDL_THREAD_AMIGA */
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/* #undef SDL_THREAD_BEOS */
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/* #undef SDL_THREAD_DC */
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/* #undef SDL_THREAD_EPOC */
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/* #undef SDL_THREAD_OS2 */
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/* #undef SDL_THREAD_PTH */
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#define SDL_THREAD_PTHREAD 1
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#define SDL_THREAD_PTHREAD_RECURSIVE_MUTEX 1
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/* #undef SDL_THREAD_PTHREAD_RECURSIVE_MUTEX_NP */
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/* #undef SDL_THREAD_SPROC */
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/* #undef SDL_THREAD_WIN32 */
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/* Enable the stub timer support (src/timer/dummy/\*.c) */
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#define SDL_TIMERS_DISABLED 1
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/* Enable various timer systems */
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/* #undef SDL_TIMER_AMIGA */
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/* #undef SDL_TIMER_BEOS */
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/* #undef SDL_TIMER_DC */
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/* #undef SDL_TIMER_EPOC */
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/* #undef SDL_TIMER_MACOS */
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/* #undef SDL_TIMER_MINT */
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/* #undef SDL_TIMER_OS2 */
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/* #undef SDL_TIMER_RISCOS */
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#define SDL_TIMER_UNIX 1
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/* #undef SDL_TIMER_WIN32 */
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/* #undef SDL_TIMER_WINCE */
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/* Enable the dummy video driver (src/video/dummy/\*.c) */
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#define SDL_VIDEO_DRIVER_DUMMY 1
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/* Enable various video drivers */
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/* #undef SDL_VIDEO_DRIVER_AALIB */
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/* #undef SDL_VIDEO_DRIVER_BWINDOW */
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/* #undef SDL_VIDEO_DRIVER_CYBERGRAPHICS */
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/* #undef SDL_VIDEO_DRIVER_DC */
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/* #undef SDL_VIDEO_DRIVER_DDRAW */
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#define SDL_VIDEO_DRIVER_DGA 1
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/* #undef SDL_VIDEO_DRIVER_DIRECTFB */
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/* #undef SDL_VIDEO_DRIVER_DRAWSPROCKET */
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#define SDL_VIDEO_DRIVER_DUMMY 1
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/* #undef SDL_VIDEO_DRIVER_EPOC */
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#define SDL_VIDEO_DRIVER_FBCON 1
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/* #undef SDL_VIDEO_DRIVER_GAPI */
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/* #undef SDL_VIDEO_DRIVER_GEM */
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/* #undef SDL_VIDEO_DRIVER_GGI */
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/* #undef SDL_VIDEO_DRIVER_IPOD */
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/* #undef SDL_VIDEO_DRIVER_NANOX */
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/* #undef SDL_VIDEO_DRIVER_OS2FS */
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/* #undef SDL_VIDEO_DRIVER_PHOTON */
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/* #undef SDL_VIDEO_DRIVER_PICOGUI */
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/* #undef SDL_VIDEO_DRIVER_PS2GS */
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/* #undef SDL_VIDEO_DRIVER_QTOPIA */
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/* #undef SDL_VIDEO_DRIVER_QUARTZ */
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/* #undef SDL_VIDEO_DRIVER_RISCOS */
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/* #undef SDL_VIDEO_DRIVER_SVGALIB */
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/* #undef SDL_VIDEO_DRIVER_TOOLBOX */
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/* #undef SDL_VIDEO_DRIVER_VGL */
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/* #undef SDL_VIDEO_DRIVER_WINDIB */
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/* #undef SDL_VIDEO_DRIVER_WSCONS */
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#define SDL_VIDEO_DRIVER_X11 1
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#define SDL_VIDEO_DRIVER_X11_DGAMOUSE 1
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/* #undef SDL_VIDEO_DRIVER_X11_DYNAMIC */
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/* #undef SDL_VIDEO_DRIVER_X11_DYNAMIC_XEXT */
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#define SDL_VIDEO_DRIVER_X11_VIDMODE 1
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#define SDL_VIDEO_DRIVER_X11_XINERAMA 1
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#define SDL_VIDEO_DRIVER_X11_XME 1
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#define SDL_VIDEO_DRIVER_X11_XV 1
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/* #undef SDL_VIDEO_DRIVER_XBIOS */
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#endif /* platform config */
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/* Enable OpenGL support */
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#define SDL_VIDEO_OPENGL 1
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#define SDL_VIDEO_OPENGL_GLX 1
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/* #undef SDL_VIDEO_OPENGL_WGL */
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/* #undef SDL_VIDEO_OPENGL_OSMESA */
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/* #undef SDL_VIDEO_OPENGL_OSMESA_DYNAMIC */
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/* Enable assembly routines */
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#define SDL_ASSEMBLY_ROUTINES 1
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/* #undef SDL_HERMES_BLITTERS */
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/* #undef SDL_ALTIVEC_BLITTERS */
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#endif /* _SDL_config_h */
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@ -159,6 +159,7 @@
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#undef SDL_AUDIO_DRIVER_DART
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#undef SDL_AUDIO_DRIVER_DC
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#undef SDL_AUDIO_DRIVER_DISK
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#undef SDL_AUDIO_DRIVER_DUMMY
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#undef SDL_AUDIO_DRIVER_DMEDIA
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#undef SDL_AUDIO_DRIVER_DSOUND
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#undef SDL_AUDIO_DRIVER_ESD
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@ -52,8 +52,8 @@ typedef unsigned int uint32_t;
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typedef unsigned int size_t;
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typedef unsigned long uintptr_t;
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/* Enable the disk audio driver (src/audio/disk/\*.c) */
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#define SDL_AUDIO_DRIVER_DISK 1
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/* Enable the dummy audio driver (src/audio/dummy/\*.c) */
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#define SDL_AUDIO_DRIVER_DUMMY 1
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/* Enable the stub cdrom driver (src/cdrom/dummy/\*.c) */
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#define SDL_CDROM_DISABLED 1
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@ -50,6 +50,8 @@
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/* Enable various audio drivers */
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#define SDL_AUDIO_DRIVER_AHI 1
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#define SDL_AUDIO_DRIVER_DUMMY 1
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#define SDL_AUDIO_DRIVER_DISK 1
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/* Enable various cdrom drivers */
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#define SDL_CDROM_DUMMY 1
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@ -79,6 +79,7 @@ typedef unsigned long uintptr_t;
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/* Enable various audio drivers */
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#define SDL_AUDIO_DRIVER_DC 1
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#define SDL_AUDIO_DRIVER_DUMMY 1
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/* Enable various cdrom drivers */
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#define SDL_CDROM_DC 1
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@ -67,6 +67,8 @@ typedef unsigned int uintptr_t;
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/* Enable various audio drivers */
|
||||
#define SDL_AUDIO_DRIVER_SNDMGR 1
|
||||
#define SDL_AUDIO_DRIVER_DISK 1
|
||||
#define SDL_AUDIO_DRIVER_DUMMY 1
|
||||
|
||||
/* Enable various cdrom drivers */
|
||||
#define SDL_CDROM_MACOS 1
|
||||
|
|
|
|||
|
|
@ -83,6 +83,8 @@
|
|||
/* Enable various audio drivers */
|
||||
#define SDL_AUDIO_DRIVER_COREAUDIO 1
|
||||
#define SDL_AUDIO_DRIVER_SNDMGR 1
|
||||
#define SDL_AUDIO_DRIVER_DISK 1
|
||||
#define SDL_AUDIO_DRIVER_DUMMY 1
|
||||
|
||||
/* Enable various cdrom drivers */
|
||||
#define SDL_CDROM_MACOSX 1
|
||||
|
|
|
|||
|
|
@ -108,6 +108,8 @@ typedef unsigned long long uint64_t;
|
|||
|
||||
/* Enable various audio drivers */
|
||||
#define SDL_AUDIO_DRIVER_DART 1
|
||||
#define SDL_AUDIO_DRIVER_DISK 1
|
||||
#define SDL_AUDIO_DRIVER_DUMMY 1
|
||||
|
||||
/* Enable various cdrom drivers */
|
||||
#define SDL_CDROM_OS2 1
|
||||
|
|
|
|||
|
|
@ -115,6 +115,8 @@ typedef unsigned int uintptr_t;
|
|||
#define SDL_AUDIO_DRIVER_DSOUND 1
|
||||
#endif
|
||||
#define SDL_AUDIO_DRIVER_WAVEOUT 1
|
||||
#define SDL_AUDIO_DRIVER_DISK 1
|
||||
#define SDL_AUDIO_DRIVER_DUMMY 1
|
||||
|
||||
/* Enable various cdrom drivers */
|
||||
#ifdef _WIN32_WCE
|
||||
|
|
|
|||
|
|
@ -95,6 +95,9 @@ static AudioBootStrap *bootstrap[] = {
|
|||
#if SDL_AUDIO_DRIVER_DISK
|
||||
&DISKAUD_bootstrap,
|
||||
#endif
|
||||
#if SDL_AUDIO_DRIVER_DUMMY
|
||||
&DUMMYAUD_bootstrap,
|
||||
#endif
|
||||
#if SDL_AUDIO_DRIVER_DC
|
||||
&DCAUD_bootstrap,
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -159,6 +159,9 @@ extern AudioBootStrap MINTAUDIO_DMA8_bootstrap;
|
|||
#if SDL_AUDIO_DRIVER_DISK
|
||||
extern AudioBootStrap DISKAUD_bootstrap;
|
||||
#endif
|
||||
#if SDL_AUDIO_DRIVER_DUMMY
|
||||
extern AudioBootStrap DUMMYAUD_bootstrap;
|
||||
#endif
|
||||
#if SDL_AUDIO_DRIVER_DC
|
||||
extern AudioBootStrap DCAUD_bootstrap;
|
||||
#endif
|
||||
|
|
|
|||
6
src/audio/dummy/.cvsignore
Normal file
6
src/audio/dummy/.cvsignore
Normal file
|
|
@ -0,0 +1,6 @@
|
|||
Makefile.in
|
||||
Makefile
|
||||
.libs
|
||||
*.o
|
||||
*.lo
|
||||
*.la
|
||||
154
src/audio/dummy/SDL_dummyaudio.c
Normal file
154
src/audio/dummy/SDL_dummyaudio.c
Normal file
|
|
@ -0,0 +1,154 @@
|
|||
/*
|
||||
SDL - Simple DirectMedia Layer
|
||||
Copyright (C) 1997-2006 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 hacked^H^H^H^H^H^Hwritten by Ryan C. Gordon
|
||||
(icculus@icculus.org)
|
||||
*/
|
||||
#include "SDL_config.h"
|
||||
|
||||
/* Output raw audio data to a file. */
|
||||
|
||||
#if HAVE_STDIO_H
|
||||
#include <stdio.h>
|
||||
#endif
|
||||
|
||||
#include "SDL_rwops.h"
|
||||
#include "SDL_timer.h"
|
||||
#include "SDL_audio.h"
|
||||
#include "../SDL_audiomem.h"
|
||||
#include "../SDL_audio_c.h"
|
||||
#include "../SDL_audiodev_c.h"
|
||||
#include "SDL_dummyaudio.h"
|
||||
|
||||
/* The tag name used by DUMMY audio */
|
||||
#define DUMMYAUD_DRIVER_NAME "dummy"
|
||||
|
||||
/* environment variables and defaults. */
|
||||
#define DUMMYENVR_WRITEDELAY "SDL_DUMMYAUDIODELAY"
|
||||
#define DUMMYDEFAULT_WRITEDELAY 150
|
||||
|
||||
/* Audio driver functions */
|
||||
static int DUMMYAUD_OpenAudio(_THIS, SDL_AudioSpec *spec);
|
||||
static void DUMMYAUD_WaitAudio(_THIS);
|
||||
static void DUMMYAUD_PlayAudio(_THIS);
|
||||
static Uint8 *DUMMYAUD_GetAudioBuf(_THIS);
|
||||
static void DUMMYAUD_CloseAudio(_THIS);
|
||||
|
||||
/* Audio driver bootstrap functions */
|
||||
static int DUMMYAUD_Available(void)
|
||||
{
|
||||
const char *envr = SDL_getenv("SDL_AUDIODRIVER");
|
||||
if (envr && (SDL_strcmp(envr, DUMMYAUD_DRIVER_NAME) == 0)) {
|
||||
return(1);
|
||||
}
|
||||
return(0);
|
||||
}
|
||||
|
||||
static void DUMMYAUD_DeleteDevice(SDL_AudioDevice *device)
|
||||
{
|
||||
SDL_free(device->hidden);
|
||||
SDL_free(device);
|
||||
}
|
||||
|
||||
static SDL_AudioDevice *DUMMYAUD_CreateDevice(int devindex)
|
||||
{
|
||||
SDL_AudioDevice *this;
|
||||
const char *envr;
|
||||
|
||||
/* Initialize all variables that we clean on shutdown */
|
||||
this = (SDL_AudioDevice *)SDL_malloc(sizeof(SDL_AudioDevice));
|
||||
if ( this ) {
|
||||
SDL_memset(this, 0, (sizeof *this));
|
||||
this->hidden = (struct SDL_PrivateAudioData *)
|
||||
SDL_malloc((sizeof *this->hidden));
|
||||
}
|
||||
if ( (this == NULL) || (this->hidden == NULL) ) {
|
||||
SDL_OutOfMemory();
|
||||
if ( this ) {
|
||||
SDL_free(this);
|
||||
}
|
||||
return(0);
|
||||
}
|
||||
SDL_memset(this->hidden, 0, (sizeof *this->hidden));
|
||||
|
||||
envr = SDL_getenv(DUMMYENVR_WRITEDELAY);
|
||||
this->hidden->write_delay = (envr) ? SDL_atoi(envr) : DUMMYDEFAULT_WRITEDELAY;
|
||||
|
||||
/* Set the function pointers */
|
||||
this->OpenAudio = DUMMYAUD_OpenAudio;
|
||||
this->WaitAudio = DUMMYAUD_WaitAudio;
|
||||
this->PlayAudio = DUMMYAUD_PlayAudio;
|
||||
this->GetAudioBuf = DUMMYAUD_GetAudioBuf;
|
||||
this->CloseAudio = DUMMYAUD_CloseAudio;
|
||||
|
||||
this->free = DUMMYAUD_DeleteDevice;
|
||||
|
||||
return this;
|
||||
}
|
||||
|
||||
AudioBootStrap DUMMYAUD_bootstrap = {
|
||||
DUMMYAUD_DRIVER_NAME, "SDL dummy audio driver",
|
||||
DUMMYAUD_Available, DUMMYAUD_CreateDevice
|
||||
};
|
||||
|
||||
/* This function waits until it is possible to write a full sound buffer */
|
||||
static void DUMMYAUD_WaitAudio(_THIS)
|
||||
{
|
||||
SDL_Delay(this->hidden->write_delay);
|
||||
}
|
||||
|
||||
static void DUMMYAUD_PlayAudio(_THIS)
|
||||
{
|
||||
/* no-op...this is a null driver. */
|
||||
}
|
||||
|
||||
static Uint8 *DUMMYAUD_GetAudioBuf(_THIS)
|
||||
{
|
||||
return(this->hidden->mixbuf);
|
||||
}
|
||||
|
||||
static void DUMMYAUD_CloseAudio(_THIS)
|
||||
{
|
||||
if ( this->hidden->mixbuf != NULL ) {
|
||||
SDL_FreeAudioMem(this->hidden->mixbuf);
|
||||
this->hidden->mixbuf = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
static int DUMMYAUD_OpenAudio(_THIS, SDL_AudioSpec *spec)
|
||||
{
|
||||
#if HAVE_STDIO_H
|
||||
fprintf(stderr, "\nWARNING: You are using the SDL dummy audio driver!"
|
||||
" No sound will be output!\n\n");
|
||||
#endif
|
||||
|
||||
/* Allocate mixing buffer */
|
||||
this->hidden->mixlen = spec->size;
|
||||
this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->hidden->mixlen);
|
||||
if ( this->hidden->mixbuf == NULL ) {
|
||||
return(-1);
|
||||
}
|
||||
SDL_memset(this->hidden->mixbuf, spec->silence, spec->size);
|
||||
|
||||
/* We're ready to rock and roll. :-) */
|
||||
return(0);
|
||||
}
|
||||
|
||||
39
src/audio/dummy/SDL_dummyaudio.h
Normal file
39
src/audio/dummy/SDL_dummyaudio.h
Normal file
|
|
@ -0,0 +1,39 @@
|
|||
/*
|
||||
SDL - Simple DirectMedia Layer
|
||||
Copyright (C) 1997-2006 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
|
||||
*/
|
||||
#include "SDL_config.h"
|
||||
|
||||
#ifndef _SDL_dummyaudio_h
|
||||
#define _SDL_dummyaudio_h
|
||||
|
||||
#include "../SDL_sysaudio.h"
|
||||
|
||||
/* Hidden "this" pointer for the video functions */
|
||||
#define _THIS SDL_AudioDevice *this
|
||||
|
||||
struct SDL_PrivateAudioData {
|
||||
/* The file descriptor for the audio device */
|
||||
Uint8 *mixbuf;
|
||||
Uint32 mixlen;
|
||||
Uint32 write_delay;
|
||||
};
|
||||
|
||||
#endif /* _SDL_dummyaudio_h */
|
||||
Loading…
Add table
Add a link
Reference in a new issue