From cceaa25630a7a50b73e0dee0aee17e82237827eb Mon Sep 17 00:00:00 2001
From: hackbard <hackbard>
Date: Thu, 21 Aug 2003 03:11:30 +0000
Subject: [PATCH] -

---
 hdrec.c | 43 +++++++++++++++++++++++++++++++++----------
 hdrec.h |  1 +
 2 files changed, 34 insertions(+), 10 deletions(-)

diff --git a/hdrec.c b/hdrec.c
index 77b222b..c6945f5 100644
--- a/hdrec.c
+++ b/hdrec.c
@@ -25,6 +25,7 @@ int usage(void) {
 	printf("usage:\n\n");
 	printf("-h \t\t print this help\n");
 	printf("-i \t\t use/print file info\n");
+	printf("-R \t\t play reversed :)\n");
 	printf("-d <device> \t sound device (eg: /dev/dsp)\n");
 	printf("-r <file> \t record to <file>\n");
 	printf("-p <file> \t play from <file>\n");
@@ -55,6 +56,7 @@ int main(int argc,char **argv) {
 	unsigned char info[8];
 	int info_int;
 	int tmp;
+	char is_wav=0;
 	fd_set read_fds,write_fds;
 	struct timeval fds_tv;
 	char c;
@@ -83,6 +85,9 @@ int main(int argc,char **argv) {
 					mode|=PLAY;
 					strcpy(play_file,argv[++i]);
 					break;
+				case 'R':
+					mode|=REVERSED;
+					break;
 				case 's':
 					set.channel=STEREO;
 					break;
@@ -197,10 +202,32 @@ int main(int argc,char **argv) {
 
 	if((mode&PLAY) && (!(mode&RECORD))) {
 		printf("playing file %s ...\n",play_file);
+		if(mode&REVERSED) printf("but we do it reversed!\n");
 		rw=1;
-		while(rw) {
-			rw=read(pfile_fd,buf,set.bufsize);
-			write(audio_fd,buf,set.bufsize);
+		if(!(mode&REVERSED)) {
+			while(rw) {
+				rw=read(pfile_fd,buf,set.bufsize);
+				write(audio_fd,buf,set.bufsize);
+			}
+		} else {
+			i=0;
+			read(pfile_fd,info,4);
+			if(!strncmp(info,"RIFF",4)) {
+				is_wav=1;
+				printf("\nassuming wav file according to header ...\n");
+				i=44;
+			}
+			lseek(pfile_fd,0,SEEK_SET);
+			tmp=lseek(pfile_fd,0,SEEK_END);
+			// if(set.format==AFMT_U8) i=set.channel;
+			// if(set.format==AFMT_S16_LE) i=set.channel*2;
+			for(j=0;j<(tmp-i);j++) {
+				for(k=0;k<set.bufsize;k++) {
+					lseek(pfile_fd,tmp-(j+1)*set.bufsize+k,SEEK_SET);
+					read(pfile_fd,buf+k,1);
+				}
+				write(audio_fd,buf,set.bufsize);
+			}
 		}
 	}
 
@@ -223,30 +250,26 @@ int main(int argc,char **argv) {
 		/* write_fds */
 		FD_SET(sfile_fd,&write_fds);
 		FD_SET(audio_fd,&write_fds);
-		fds_tv.tv_sec=0;
-		fds_tv.tv_usec=1000;
 		while(c!='q') {
+			fds_tv.tv_sec=0;
+			fds_tv.tv_usec=1000;
 			k=select(sfile_fd+1,&read_fds,&write_fds,NULL,&fds_tv);
 			if(k==0) printf("itz zZzero :p\n");
 			if(k) {
+				printf("returned after %ld usecs\n",1000-fds_tv.tv_usec);
 				if(FD_ISSET(0,&read_fds)) {
-					puts("reading from stdin");
 					read(0,&c,1);
 				}
 				if(FD_ISSET(pfile_fd,&read_fds)) {
-					puts("read from sound file");
 					read(pfile_fd,buf2,set.bufsize);
 				}
 				if(FD_ISSET(audio_fd,&read_fds)) {
-					puts("reading from audio device");
 					read(audio_fd,buf,set.bufsize);
 				}
 				if(FD_ISSET(sfile_fd,&write_fds)) {
-					puts("writing to file");
 					write(sfile_fd,buf,set.bufsize);
 				}
 				if(FD_ISSET(audio_fd,&write_fds)) {
-					puts("writing to audio device");
 					write(audio_fd,buf2,set.bufsize);
 				}
 			}
diff --git a/hdrec.h b/hdrec.h
index 90e9c33..61bd6e5 100644
--- a/hdrec.h
+++ b/hdrec.h
@@ -6,6 +6,7 @@
 #define PLAY 1
 #define RECORD 2
 #define CONVERT 4
+#define REVERSED 8
 
 #define MAX_C_FILE 128
 #define MAX_C_DEVICE 128
-- 
2.20.1