use round() in pcm volume gain

Signed-off-by: qshi <qshi@123456.com>

demo/recv_voice.c

@@ -9,7 +9,7 @@
 #include <arpa/inet.h>
 #include <errno.h>  
 
-#define HOST_IF_IP "192.168.0.191"
+#define HOST_IF_IP "192.168.31.89"
 #define GROUP_ADDR "225.0.0.5"
 #define PORTRECV   8310
 
@@ -30,8 +30,7 @@ int main(int argc, char *argv[])
 	int yes=1;
 	unsigned char buf[64] = {0};
 
-	signal(SIGTERM, sigterm);
+	signal(SIGINT, sigterm);
-
 	sock = socket(AF_INET,SOCK_DGRAM,0);
 	printf("sockfd: %d\n",sock);
 	if (sock == -1) {
@@ -46,7 +45,7 @@ int main(int argc, char *argv[])
 
 	memset(&ser_addr,0,sizeof(ser_addr));
 	ser_addr.sin_family      = AF_INET;  
-	ser_addr.sin_addr.s_addr = inet_addr(HOST_IF_IP);
+	ser_addr.sin_addr.s_addr = INADDR_ANY;//inet_addr(GROUP_ADDR);
 	ser_addr.sin_port        = htons(PORTRECV);
 	if (bind(sock,(struct sockaddr *) &ser_addr,sizeof(ser_addr)) < 0){  
 		perror("bind");  
@@ -60,7 +59,9 @@ int main(int argc, char *argv[])
 		close(sock);	
 		exit(1);  
 	}
+
 	myfile = fopen("output.raw", "w");
+	
 	while (!got_sig) { 
 		slen = sizeof ser_addr;
 		memset(&ser_addr, 0, sizeof ser_addr);
@@ -69,13 +70,15 @@ int main(int argc, char *argv[])
 			perror("recvfrom");  
 			exit(1);  
 		}
-
+		printf("recv data %d\n", count);
 		if (count == 64) {
 			if (buf[0] == 0xac && buf[1] == 0x93 && buf[63] == 0x14) {
 				fwrite(buf + 16, 1, 6, myfile);
 			}
 		}
+		//fflush(myfile);	
 	}
+	printf("---------------\n");	
 	fclose(myfile);
 	return 0;
 }

src/common/config.h

@@ -4,6 +4,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdint.h>
+#include <math.h>
 #include <string.h>
 #include <unistd.h>
 #include <sys/timerfd.h>

src/common/pcm2alaw.c

@@ -160,7 +160,7 @@ int alaw2linear_buf_gain(unsigned char *lbuf, int llen, unsigned char *abuf, int
 	short *pcm16 = (short *)lbuf;
 
 	for (m = 0; m < alen; m++) {
-		pcm32 = alaw2linear(abuf[m]) * gain;
+		pcm32 = round(alaw2linear(abuf[m]) * gain);
 		if (pcm32 > 32767)
 			pcm32 = 32767;
 		if (pcm32 < -32768)

src/zkbrc.json

@@ -23,5 +23,5 @@
 	"audio_local_play":	1,
 	"down_audio_play":	[0, 0, 0, 0],
 	"alarm_audio_play":	1,
-	"play_volume":		9
+	"play_volume":		6
 }