cod1.zip_hawkboard_imx_playback

#include <unistd.h> #include <fcntl.h> #include <sys/types.h> #include <sys/ioctl.h> #include <stdlib.h> #include <stdio.h> #include <linux/soundcard.h> #define LENGTH 1 /* how many seconds of speech to store */ #define RATE 8000 /* the sampling rate */ #define SIZE 8 /* sample size: 8 or 16 bits */ #define CHANNELS 1 /* 1 = mono 2 = stereo */ #define NUM 290000 /* this buffer holds the digitized audio */ unsigned char buf[LENGTH*RATE*SIZE*CHANNELS/8]; typedef struct WavHeader { unsigned char ChunkID[4]; long ChunkSize; unsigned char Format[4]; unsigned char SubChunk[3]; long SubChunk1Size; short AudioFormat; short AudioChannels; long SampleRate; long ByteRate; short BlockAlign; short BitsPerSample; char DataSubChunk[4] ; long SubChunk2Size ; }Wav; Wav a; unsigned char *Buffer; int main() { int fd; /* sound device file descriptor */ int arg; /* argument for ioctl calls */ int status; /* return status of system calls */ //FILE *fp1=fopen("avisspeech.txt","w+"); FILE *fp=fopen("CallFailed.wav","r+"); FILE *fwav=fopen("new.wav","w+") ; fread(&a,sizeof(a),1,fp); /* open sound device */ fd = open("/dev/dsp", O_RDWR); if (fd < 0) { perror("open of /dev/dsp failed"); exit(1); } /* set sampling parameters */ arg = SIZE; /* sample size */ status = ioctl(fd, SOUND_PCM_WRITE_BITS, &arg); if (status == -1) perror("SOUND_PCM_WRITE_BITS ioctl failed"); if (arg != SIZE) perror("unable to set sample size"); arg = CHANNELS; /* mono or stereo */ status = ioctl(fd, SOUND_PCM_WRITE_CHANNELS, &arg); if (status == -1) perror("SOUND_PCM_WRITE_CHANNELS ioctl failed"); if (arg != CHANNELS) perror("unable to set number of channels"); arg = RATE; /* sampling rate */ status = ioctl(fd, SOUND_PCM_WRITE_RATE, &arg); if (status == -1) perror("SOUND_PCM_WRITE_WRITE ioctl failed"); //while (1) { /* loop until Control-C */ printf("Say something:\n"); status = read(fd, buf, sizeof(buf)); /* record some sound */ //fwrite(buf,1,sizeof(buf),fp1); if (status != sizeof(buf)) perror("read wrong number of bytes"); printf("You said:\n"); //status = write(fd, buf, sizeof(buf)); /* play it back */ //if (status != sizeof(buf)) //perror("wrote wrong number of bytes"); /* wait for playback to complete before recording again */ //sleep(10); //status = ioctl(fd, SOUND_PCM_SYNC, 0); //if (status == -1) // perror("SOUND_PCM_SYNC ioctl failed"); // } a.SubChunk2Size=sizeof(buf); a.ChunkSize=a.SubChunk2Size-36; a.SampleRate=8000; a.ByteRate=16000; fwrite(&a,sizeof(a),1,fwav); fwrite(buf,sizeof(buf),1,fwav); fclose(fp); // fclose(ft); fclose(fwav); //fclose(fp1); }