Attachment 11656 Details for Bug 22874 – full-duplex-blocking-audio-test3.c

full-duplex-blocking-audio-test3.c

full-duplex-blocking-audio-test3.c (text/plain; charset=us-ascii), 3.14 KB, created by oh on 2000-11-19 11:45:56 UTC

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Creator: oh

Created: 2000-11-19 11:45:56 UTC

Size: 3.14 KB

patch

obsolete

>#include <sys/soundcard.h>
>#include <sys/ioctl.h>
>
>#include <fcntl.h>
>#include <inttypes.h>
>#include <stdio.h>
>#include <sysexits.h>
>#include <unistd.h>
>
>#define SAMPLE_BLKSZ 1024
>
>#define AUDIO_IOCTL(fd, cmd, val) \
>	if (ioctl((fd), (cmd), (val)) < 0) { \
>		fprintf(stderr, "Failed %s - line %d\n",#cmd, __LINE__); \
>		exit(EX_UNAVAILABLE); \
>	}
>
>
>static void progress() {
>    const char sym[]="-\\|/";
>    static int n;
>
>    int m = n % (sizeof(sym) - 1);
>
>    if (n == 0) {
>	printf(" ");
>    }
>    printf("%c%c", '\b', sym[m]);
>    fflush(stdout);
>
>    n++;
>}
>
>int main(int argc, char *argv[])
>{
>    char    *thedev = "/dev/audio";
>    uint16_t buf[SAMPLE_BLKSZ];
>    int      c, fd, rlen, wlen, rate = 8000;
>    
>    while((c = getopt(argc, argv, "f:r:")) != -1) {
>	switch(c) {
>	case 'f':
>	    thedev = optarg;
>	    break;
>	case 'r':
>	    rate = atoi(optarg);
>	    break;
>	default:
>	    fprintf(stderr, 
>		    "%s -f flag specifies audio device to test.\n", 
>		    argv[0]);
>	    exit(EX_USAGE);
>	}
>    }
>	  
>    fd = open(thedev, O_RDWR);
>    if (fd > 0) {
>	snd_chan_param   pa;
>	struct snd_size  sz;     
>	audio_buf_info   abi;
>	snd_capabilities sc;
>	int fragsz;
>
>	AUDIO_IOCTL(fd, AIOGCAP, &sc);
>	printf("Device Caps:\n\tSample rates: %d -- %d Hz\n", 
>	       sc.rate_min, sc.rate_max);
>	printf("\tFormats: 0x%08x\n\tDMA buffer size: %d bytes\n", 
>	       sc.formats, sc.bufsize);
>	printf("\tMixers: 0x%08x Inputs: 0x%08x\n", sc.mixers, sc.inputs);
>	printf("\tLevels: %d (left), %d (right)\n", sc.left, sc.right);
>
>	pa.play_rate   = rate;
>	pa.play_format = AFMT_S16_LE;
>	pa.rec_rate    = rate;
>	pa.rec_format  = AFMT_S16_LE;
>	AUDIO_IOCTL(fd, AIOSFMT, &pa);
>	fprintf(stdout, "Set play rate %d fmt %d\n", pa.play_rate, pa.play_format);
>	fprintf(stdout, "Set record rate %d fmt %d\n", pa.rec_rate, pa.rec_format);
>	AUDIO_IOCTL(fd, AIOGFMT, &pa);
>	fprintf(stdout, "Got play rate %d fmt %d\n", pa.play_rate, pa.play_format);
>	fprintf(stdout, "Got record rate %d fmt %d\n", pa.rec_rate, pa.rec_format);
>
>
>	/* Put device in block mode and set block size */
>	sz.play_size = SAMPLE_BLKSZ;
>	sz.rec_size  = SAMPLE_BLKSZ;
>	/*	AUDIO_IOCTL(fd, AIOSSIZE, &sz); */
>	AUDIO_IOCTL(fd, AIOGSIZE, &sz);
>
>	fprintf(stdout, "Block size requested %d, play %d, rec %d\n", 
>		SAMPLE_BLKSZ, sz.play_size, sz.rec_size);
>
>	/* Set large number of fragment */
>	fragsz = SAMPLE_BLKSZ;
>	AUDIO_IOCTL(fd, SNDCTL_DSP_SETFRAGMENT, &fragsz);
>
>	AUDIO_IOCTL(fd, SNDCTL_DSP_GETOSPACE, &abi);
>	fprintf(stdout, 
>		"Output buffer status: frags %d frags total %d fragsize %d bytes %d\n",
>		abi.fragments, abi.fragstotal, abi.fragsize, abi.bytes);
>
>
>	AUDIO_IOCTL(fd, SNDCTL_DSP_GETISPACE, &abi);
>	fprintf(stdout, 
>		"Input buffer status: frags %d frags total %d fragsize %d bytes %d\n",
>		abi.fragments, abi.fragstotal, abi.fragsize, abi.bytes);
>		
>
>	memset(buf, 0, sizeof(buf) / sizeof(buf[0]));
>	while((rlen = read(fd, buf, sizeof(buf))) > 0) {
>	  fprintf(stderr, "Read %d\n", rlen);
>	    progress();
>	    wlen = write(fd, buf, rlen);
>	    if (wlen != rlen) {
>		fprintf(stderr, "write failed %d != %d\n", wlen, rlen);
>		exit(EX_IOERR);
>	    }
>	}
>     } else {
>	fprintf(stderr, "Could not open %s O_RDWR\n", thedev);
>	exit(EX_OSFILE);
>    }
>    return 0;
>}

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Attachments on bug 22874: 11656