Mercurial > sdl-ios-xcode
annotate docs/man3/SDL_AudioSpec.3 @ 1438:1f4f09641645
Date: Sun, 26 Feb 2006 11:25:09 +0900
From: Hayashi Naoyuki
Subject: Re: [SDL] CVS stable again, please update SDL ports
Some problems are caused on Tru64 UNIX.
If applying SDL12-osf1.path, these problems are fixed.
1. configure-script say "recursive mutexes... no" and "pthread
semaphores... no".
checking for pthreads... yes
checking for recursive mutexes... no
checking for pthread semaphores... no
This is because it compiled without pthread_cflags and pthread_lib when
checking recursive mutexes and pthread semaphores.
2. Compiling src/audio/mme/SDL_mmeaudio.c fails.
cc: Severe: ./src/audio/mme/SDL_mmeaudio.c, line 25: Cannot find file
<mme_api.h> specified in #include directive. (noinclfilef)
#include <mme_api.h>
-^
This is because BUILD_CFLAGS is wrong.
3. Compiling src/cdrom/osf/SDL_syscdrom.c fails.
cc: Warning: ./src/cdrom/osf/SDL_syscdrom.c, line 176: Too few actual
parameters in the invocation of the macro "SDL_stack_alloc". (toofewactuals)
cdpath = SDL_stack_alloc(len);
------------------------------------^
cc: Error: ./src/cdrom/osf/SDL_syscdrom.c, line 176: Invalid expression.
(badexpr)
cdpath = SDL_stack_alloc(len);
-----------------^
SDL_stack_alloc is defined in include/SDL_stdinc.h.
#define SDL_stack_alloc(type, count) (type*)alloca(sizeof(type)*count)
4. Linking fails if running configure with --enable-x11-shared=yes.
/usr/ccs/bin/ld:
Warning: Unresolved:
p_XData32
5. Compiling src/video/x11/SDL_x11dyn.c fails if running configure with
--enable-x11-shared=no.
cc: Error: ./src/video/x11/SDL_x11sym.h, line 149: In this statement,
"_SmtBufferOverflow" is not declared. (undeclared)
SDL_X11_SYM(1,void,_SmtBufferOverflow,(Display *dpy,register smtDisplayPtr))
^
cc: Error: ./src/video/x11/SDL_x11sym.h, line 150: In this statement,
"_SmtBufferOverflow" is not declared. (undeclared)
SDL_X11_SYM(1,void,_SmtBufferOverflow,(Display *dpy,register smtDisplayPtr))
^
cc: Error: ./src/video/x11/SDL_x11sym.h, line 150: In this statement,
"_SmtIpError" is not declared. (undeclared)
SDL_X11_SYM(1,void,_SmtIpError,(Display *dpy,register smtDisplayPtr, int))
^
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 26 Feb 2006 04:54:01 +0000 |
| parents | e5bc29de3f0a |
| children | 546f7c1eb755 |
| rev | line source |
|---|---|
|
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
1 .TH "SDL_AudioSpec" "3" "Tue 11 Sep 2001, 22:58" "SDL" "SDL API Reference" |
| 0 | 2 .SH "NAME" |
| 3 SDL_AudioSpec\- Audio Specification Structure | |
| 4 .SH "STRUCTURE DEFINITION" | |
| 5 .PP | |
| 6 .nf | |
| 7 \f(CWtypedef struct{ | |
| 8 int freq; | |
| 9 Uint16 format; | |
| 10 Uint8 channels; | |
| 11 Uint8 silence; | |
| 12 Uint16 samples; | |
| 13 Uint32 size; | |
| 14 void (*callback)(void *userdata, Uint8 *stream, int len); | |
| 15 void *userdata; | |
| 16 } SDL_AudioSpec;\fR | |
| 17 .fi | |
| 18 .PP | |
| 19 .SH "STRUCTURE DATA" | |
| 20 .TP 20 | |
| 21 \fBfreq\fR | |
| 22 Audio frequency in samples per second | |
| 23 .TP 20 | |
| 24 \fBformat\fR | |
| 25 Audio data format | |
| 26 .TP 20 | |
| 27 \fBchannels\fR | |
| 28 Number of channels: 1 mono, 2 stereo | |
| 29 .TP 20 | |
| 30 \fBsilence\fR | |
| 31 Audio buffer silence value (calculated) | |
| 32 .TP 20 | |
| 33 \fBsamples\fR | |
| 34 Audio buffer size in samples | |
| 35 .TP 20 | |
| 36 \fBsize\fR | |
| 37 Audio buffer size in bytes (calculated) | |
| 38 .TP 20 | |
| 39 \fBcallback(\&.\&.)\fR | |
| 40 Callback function for filling the audio buffer | |
| 41 .TP 20 | |
| 42 \fBuserdata\fR | |
| 43 Pointer the user data which is passed to the callback function | |
| 44 .SH "DESCRIPTION" | |
| 45 .PP | |
| 46 The \fBSDL_AudioSpec\fR structure is used to describe the format of some audio data\&. This structure is used by \fI\fBSDL_OpenAudio\fP\fR and \fI\fBSDL_LoadWAV\fP\fR\&. While all fields are used by \fBSDL_OpenAudio\fP only \fBfreq\fR, \fBformat\fR, \fBsamples\fR and \fBchannels\fR are used by \fBSDL_LoadWAV\fP\&. We will detail these common members here\&. | |
| 47 .TP 20 | |
| 48 \fBfreq\fR | |
| 49 The number of samples sent to the sound device every second\&. Common values are 11025, 22050 and 44100\&. The higher the better\&. | |
| 50 .TP 20 | |
| 51 \fBformat\fR | |
| 52 Specifies the size and type of each sample element | |
| 53 .IP "\fBAUDIO_U8\fP" 10Unsigned 8-bit samples | |
| 54 .IP "\fBAUDIO_S8\fP" 10Signed 8-bit samples | |
| 55 .IP "\fBAUDIO_U16\fP or \fBAUDIO_U16LSB\fP" 10Unsigned 16-bit little-endian samples | |
| 56 .IP "\fBAUDIO_S16\fP or \fBAUDIO_S16LSB\fP" 10Signed 16-bit little-endian samples | |
| 57 .IP "\fBAUDIO_U16MSB\fP" 10Unsigned 16-bit big-endian samples | |
| 58 .IP "\fBAUDIO_S16MSB\fP" 10Signed 16-bit big-endian samples | |
| 59 .IP "\fBAUDIO_U16SYS\fP" 10Either \fBAUDIO_U16LSB\fP or \fBAUDIO_U16MSB\fP depending on you systems endianness | |
| 60 .IP "\fBAUDIO_S16SYS\fP" 10Either \fBAUDIO_S16LSB\fP or \fBAUDIO_S16MSB\fP depending on you systems endianness | |
| 61 .TP 20 | |
| 62 \fBchannels\fR | |
| 63 The number of seperate sound channels\&. 1 is mono (single channel), 2 is stereo (dual channel)\&. | |
| 64 .TP 20 | |
| 65 \fBsamples\fR | |
| 66 When used with \fI\fBSDL_OpenAudio\fP\fR this refers to the size of the audio buffer in samples\&. A sample a chunk of audio data of the size specified in \fBformat\fR mulitplied by the number of channels\&. When the \fBSDL_AudioSpec\fR is used with \fI\fBSDL_LoadWAV\fP\fR \fBsamples\fR is set to 4096\&. | |
| 67 .SH "SEE ALSO" | |
| 68 .PP | |
| 69 \fI\fBSDL_OpenAudio\fP\fR, \fI\fBSDL_LoadWAV\fP\fR | |
|
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
70 ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 22:58 |