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All these are instances of #define NAME value; or #define NAME(params_opt) value; These of course fail to build when used in contexts like if(foo $OP NAME) while(bar $OP NAME) and may silently generate the wrong code in contexts such as foo = NAME + 1; /* foo = value; + 1; */ bar = NAME - 1; /* bar = value; - 1; */ baz = NAME & quux; /* baz = value; & quux; */ Reported on comp.lang.c, Message-ID: <ab0d55fe-25e5-482b-811e-c475aa6065c3@c29g2000yqd.googlegroups.com> Initial analysis of the dangers provided by Keith Thompson in that thread. There are many more instances of more complicated macros having unnecessary trailing semicolons, but this pile seems to be all of the cases of simple values suffering from the problem. (Thus things that are likely to be found in one of the contexts above, more complicated ones aren't.) Signed-off-by: Phil Carmody <ext-phil.2.carmody@nokia.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
130 lines
4.5 KiB
C
130 lines
4.5 KiB
C
#ifndef __SOUND_SOUNDFONT_H
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#define __SOUND_SOUNDFONT_H
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/*
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* Soundfont defines and definitions.
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*
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* Copyright (C) 1999 Steve Ratcliffe
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* Copyright (c) 1999-2000 Takashi iwai <tiwai@suse.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "sfnt_info.h"
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#include "util_mem.h"
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#define SF_MAX_INSTRUMENTS 128 /* maximum instrument number */
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#define SF_MAX_PRESETS 256 /* drums are mapped from 128 to 256 */
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#define SF_IS_DRUM_BANK(z) ((z) == 128)
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struct snd_sf_zone {
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struct snd_sf_zone *next; /* Link to next */
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unsigned char bank; /* Midi bank for this zone */
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unsigned char instr; /* Midi program for this zone */
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unsigned char mapped; /* True if mapped to something else */
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struct soundfont_voice_info v; /* All the soundfont parameters */
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int counter;
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struct snd_sf_sample *sample; /* Link to sample */
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/* The following deals with preset numbers (programs) */
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struct snd_sf_zone *next_instr; /* Next zone of this instrument */
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struct snd_sf_zone *next_zone; /* Next zone in play list */
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};
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struct snd_sf_sample {
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struct soundfont_sample_info v;
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int counter;
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struct snd_util_memblk *block; /* allocated data block */
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struct snd_sf_sample *next;
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};
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/*
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* This represents all the information relating to a soundfont.
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*/
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struct snd_soundfont {
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struct snd_soundfont *next; /* Link to next */
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/*struct snd_soundfont *prev;*/ /* Link to previous */
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short id; /* file id */
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short type; /* font type */
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unsigned char name[SNDRV_SFNT_PATCH_NAME_LEN]; /* identifier */
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struct snd_sf_zone *zones; /* Font information */
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struct snd_sf_sample *samples; /* The sample headers */
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};
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/*
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* Type of the sample access callback
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*/
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struct snd_sf_callback {
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void *private_data;
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int (*sample_new)(void *private_data, struct snd_sf_sample *sp,
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struct snd_util_memhdr *hdr,
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const void __user *buf, long count);
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int (*sample_free)(void *private_data, struct snd_sf_sample *sp,
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struct snd_util_memhdr *hdr);
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void (*sample_reset)(void *private);
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};
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/*
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* List of soundfonts.
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*/
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struct snd_sf_list {
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struct snd_soundfont *currsf; /* The currently open soundfont */
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int open_client; /* client pointer for lock */
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int mem_used; /* used memory size */
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struct snd_sf_zone *presets[SF_MAX_PRESETS];
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struct snd_soundfont *fonts; /* The list of soundfonts */
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int fonts_size; /* number of fonts allocated */
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int zone_counter; /* last allocated time for zone */
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int sample_counter; /* last allocated time for sample */
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int zone_locked; /* locked time for zone */
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int sample_locked; /* locked time for sample */
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struct snd_sf_callback callback; /* callback functions */
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int presets_locked;
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struct mutex presets_mutex;
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spinlock_t lock;
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struct snd_util_memhdr *memhdr;
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};
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/* Prototypes for soundfont.c */
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int snd_soundfont_load(struct snd_sf_list *sflist, const void __user *data,
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long count, int client);
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int snd_soundfont_load_guspatch(struct snd_sf_list *sflist, const char __user *data,
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long count, int client);
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int snd_soundfont_close_check(struct snd_sf_list *sflist, int client);
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struct snd_sf_list *snd_sf_new(struct snd_sf_callback *callback,
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struct snd_util_memhdr *hdr);
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void snd_sf_free(struct snd_sf_list *sflist);
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int snd_soundfont_remove_samples(struct snd_sf_list *sflist);
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int snd_soundfont_remove_unlocked(struct snd_sf_list *sflist);
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int snd_soundfont_search_zone(struct snd_sf_list *sflist, int *notep, int vel,
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int preset, int bank,
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int def_preset, int def_bank,
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struct snd_sf_zone **table, int max_layers);
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/* Parameter conversions */
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int snd_sf_calc_parm_hold(int msec);
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int snd_sf_calc_parm_attack(int msec);
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int snd_sf_calc_parm_decay(int msec);
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#define snd_sf_calc_parm_delay(msec) (0x8000 - (msec) * 1000 / 725)
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extern int snd_sf_vol_table[128];
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int snd_sf_linear_to_log(unsigned int amount, int offset, int ratio);
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#endif /* __SOUND_SOUNDFONT_H */
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