linux ¼Òô·ÅÒô³ÌÐò£¨´ÓÍøÉÏÕÒÀ´µÄ£©
/*
Name: SndKit.c
Copyright: GPLv2
Author: rockins(ybc2084@163.com)
Date: 15-10-06 18:22
Description: implent raw sound record/play
run: ./SndKit [-h] [-d device] [-c channel] [-b bits] [-f hz] [-l len] <-r|-p file>
e.g.:
./SndKit -h show help information
./SndKit -r record.wav record audio from microphone(/dev/dsp)
./SndKit -d /dev/dsp -p record.wav playback record.wav via /dev/dsp
./SndKit -b 8 -f 22 -r reacord.wav record audio in 8 bit & 22k hz
./SndKit -d /dev/dsp -c 2 -r record.wav record audio in /dev/dsp and stereo
./SndKit -r -l 40 record.wav record 40k audio data
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <linux/soundcard.h> /*for OSS style sound programing */
#define TRUE 1
#define FALSE 0
#define FMT8BITS AFMT_U8 /*unsigned 8 bits(for almost PC) */
#define FMT16BITS AFMT_S16_LE /*signed 16 bits,little endian */
#define FMT8K 8000 /*default sampling rate */
#define FMT11K 11025 /*11,22,44,48 are three pop rate */
#define FMT22K 22050
#define FMT44K 44100
#define FMT48K 48000
#define MONO 1
#define STEREO 2
#define ACT_RECORD 0
#define ACT_PLAY 1
#define DFT_SND_DEV "/dev/dsp"
#define DFT_SND_FMT FMT8BITS
#define DFT_SND_SPD FMT8K
#define DFT_SND_CHN MONO
#define DFT_LEN 1024 /*default record length:40k */
#define BUFF_SIZE 512 /*buffer size:512 Bytes */
/************** function prototype ********************/
v
Ïà¹ØÎĵµ£º
1. ѧ»áд¼òµ¥µÄmakefile
2. ±àһЩӦÓÃ
³ÌÐò
£¬¿ÉÒÔÓÃmakefileÅÜÆðÀ´
3. ѧ»áдÇý¶¯
µÄmakefile
4. дһ¼òµ¥charÇý¶¯£¬makefile±àÒëͨ¹ý£¬¿ÉÒÔinsmod£¬ lsmod£¬ rmmod. ÔÚÇý¶¯µÄinitº¯ÊýÀï´òÓ¡hello world£¬insmodºóÓ¦¸ÃÄܹ»Í¨¹ýdmesg¿´µ½Êä³ö
¡£
5. дһÍêÕûÇý¶¯£¬ ¼ÓÉÏread£¬ write£¬ ioctl£¬ pollingµÈ¸ ......
ÐéÄ⻯¼¼ÊõµÄ·½·¨, ¼Ü¹¹ºÍʵÏÖ¸ÅÀÀ
¼¶±ð: Öм¶
M. Tim Jones [mtj@mtjones.com], ¹ËÎʹ¤³Ìʦ, Emulex
ÔÎÄ: Virtual Linux
Òë: ÕÔçæ cn.zhaoke.com
http://blog.zhaoke.com/45.html
2006Äê12ÔÂ29ÈÕ
ÐéÄ⻯¼¼ÊõµÄÓ¦ÓÃÊ®·Ö¹ã·º. µ±Ç°ÐéÄ⻯¼¼ÊõÖ÷Òª¹Ø×¢ÓÚ·þÎñÆ÷µÄÐéÄ⻯, »òÔÚµ¥¸öÖ÷»úÉϼĴæ¶à¸ö¶ÀÁ¢µÄ²Ù×÷ϵͳ. ±¾Î ......
Linux ÐéÄâÎļþϵͳ¸Å¹Û
×÷Õß Richard Gooch <rgooch@atnf.cs.iro.au>
·Òë albcamus <albcamus@gmail.com>
×îºó¸üÐÂ:2007 Äê 6 Ô 24 ÈÕ
°æȨ:1999, Richard Gooch
°æȨ:2005, Pekka Enberg
±¾ÎļþÒÔ GPLv2 Ðí¿É·¢·Å
[·Òë˵Ã÷:Richard Gooch µÄÕâ·Ý Overview of ......
ת×Ô£º http://www.diybl.com/course/6_system/linux/Linuxxl/20081124/152557.html
ºÃºÃѧϰ£¬ÌìÌìÏòÉÏ
ÒýÑÔ
¡¡¡¡ Ị̈߳¨thread£©¼¼ÊõÔçÔÚ60Äê´ú¾Í±»Ìá³ö£¬µ«ÕæÕýÓ¦ÓöàÏ̵߳½²Ù×÷ϵͳÖÐÈ¥£¬ÊÇÔÚ80Äê´úÖÐÆÚ£¬ solarisÊÇÕâ·½ÃæµÄٮٮÕß¡£´«Í³µÄUnixÒ²Ö§³ÖÏ̵߳ĸÅÄµ«ÊÇÔÚÒ»¸ö½ø³Ì£¨process£©ÖÐÖ»ÔÊÐíÓÐÒ»¸öỊ̈߳¬ÕâÑù ......
ÉùÒôÎļþ±ØÐëΪWave PCM unsigned 8bits mono¸ñʽ
/* the *.wav must be 8000Hz 64kbps 8bits MONO(1)*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <linux/soundcard.h&g ......