Mercurial > hg > xemacs-beta
annotate src/miscplay.h @ 5366:f00192e1cd49
Examining the result of #'length: `eql', not `=', it's better style & cheaper
2011-03-08 Aidan Kehoe <kehoea@parhasard.net>
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It's better style, and cheaper (often one assembler instruction
vs. a C funcall in the byte code), to use `eql' instead of `='
when it's clear what numerical type a given result will be. Change
much of our code to do this, with the help of a byte-compiler
change (not comitted) that looked for calls to #'length (which
always returns an integer) in its args.
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Tue, 08 Mar 2011 23:41:52 +0000 |
| parents | ecf1ebac70d8 |
| children |
| rev | line source |
|---|---|
| 428 | 1 /* miscplay.h - general routines related to playing sounds |
| 2 ** | |
| 3 ** Copyright (C) 1995,96 by Markus Gutschke (gutschk@math.uni-muenster.de) | |
| 4 ** This was sawed out from version 1.3 of linuxplay.c by | |
| 5 ** Robert Bihlmeyer <robbe@orcus.priv.at>. | |
| 6 ** | |
| 7 ** Parts of this code were inspired by sunplay.c, which is copyright 1989 by | |
| 8 ** Jef Poskanzer and 1991,92 by Jamie Zawinski; c.f. sunplay.c for further | |
| 9 ** information. | |
| 10 ** | |
| 11 ** Permission to use, copy, modify, and distribute this software and its | |
| 12 ** documentation for any purpose and without fee is hereby granted, provided | |
| 13 ** that the above copyright notice appear in all copies and that both that | |
| 14 ** copyright notice and this permission notice appear in supporting | |
| 15 ** documentation. This software is provided "as is" without express or | |
| 16 ** implied warranty. | |
| 17 */ | |
| 18 | |
| 563 | 19 /* Synched up with: Not in FSF. */ |
| 20 | |
| 21 /* This file Mule-ized by Ben Wing, 5-15-01. */ | |
| 22 | |
| 440 | 23 #ifndef INCLUDED_miscplay_h_ |
| 24 #define INCLUDED_miscplay_h_ | |
| 25 | |
| 428 | 26 #define HEADERSZ 256 /* has to be at least as big as the biggest header */ |
| 27 #define SNDBUFSZ 2048 /* has to be at least as big as HEADERSZ */ | |
| 28 | |
| 29 /* Audio data formats from <linux/soundcard.h> */ | |
| 30 #define AFMT_MU_LAW 0x00000001 | |
| 31 #define AFMT_A_LAW 0x00000002 | |
| 32 #define AFMT_IMA_ADPCM 0x00000004 | |
| 33 #define AFMT_U8 0x00000008 | |
| 34 #define AFMT_S16_LE 0x00000010 /* Little endian signed 16*/ | |
| 35 #define AFMT_S16_BE 0x00000020 /* Big endian signed 16 */ | |
| 36 #define AFMT_S8 0x00000040 | |
| 37 #define AFMT_U16_LE 0x00000080 /* Little endian U16 */ | |
| 38 #define AFMT_U16_BE 0x00000100 /* Big endian U16 */ | |
| 39 #define AFMT_MPEG 0x00000200 /* MPEG (2) audio */ | |
| 40 | |
| 41 typedef enum {fmtIllegal,fmtRaw,fmtVoc,fmtWave,fmtSunAudio} fmtType; | |
| 42 | |
| 43 size_t sndcnvnop(void **data,size_t *sz,void **outbuf); | |
| 44 size_t sndcnv8U_2mono(void **data,size_t *sz,void **outbuf); | |
| 45 size_t sndcnv8S_2mono(void **data,size_t *sz,void **outbuf); | |
| 46 size_t sndcnv2monounsigned(void **data,size_t *sz,void **outbuf); | |
| 47 size_t sndcnv2unsigned(void **data,size_t *sz,void **outbuf); | |
| 48 size_t sndcnvULaw_2linear(void **data,size_t *sz,void **outbuf); | |
| 49 size_t sndcnvULaw_2mono(void **data,size_t *sz,void **outbuf); | |
| 50 size_t sndcnv16swap(void **data,size_t *sz,void **outbuf); | |
| 51 size_t sndcnv16_2monoLE(void **data,size_t *sz,void **outbuf); | |
| 52 size_t sndcnv16_2monoBE(void **data,size_t *sz,void **outbuf); | |
| 53 size_t sndcnv2byteLE(void **data,size_t *sz,void **outbuf); | |
| 54 size_t sndcnv2byteBE(void **data,size_t *sz,void **outbuf); | |
| 55 size_t sndcnv2monobyteLE(void **data,size_t *sz,void **outbuf); | |
| 56 size_t sndcnv2monobyteBE(void **data,size_t *sz,void **outbuf); | |
| 57 | |
| 2367 | 58 fmtType analyze_format(Binbyte *format,int *fmt,int *speed, |
| 428 | 59 int *tracks, |
| 60 size_t (**parsesndfile)(void **,size_t *sz, | |
| 61 void **)); | |
| 62 void reset_parsestate(void); | |
| 63 int parse_wave_complete(void); | |
| 440 | 64 |
| 65 #endif /* INCLUDED_miscplay_h_ */ |