X-Git-Url: https://www.hackdaworld.org/gitweb/?p=sound-tools%2Fhdrec.git;a=blobdiff_plain;f=hdrec.c;h=bf36409d6733216d546c884c76a6cc6d0662026c;hp=42d86a755ef6299acb6faf4945f90bc40ccc4219;hb=HEAD;hpb=9894394f33f4aee3cafbaf91c076cdd13f4fc1c6

diff --git a/hdrec.c b/hdrec.c
index 42d86a7..bf36409 100644
--- a/hdrec.c
+++ b/hdrec.c
@@ -5,24 +5,35 @@
  *
  */
 
+#define _GNU_SOURCE
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/ioctl.h>
 #include <sys/types.h>
 #include <sys/stat.h>
+#include <sys/select.h>
+#include <sys/time.h>
 #include <sys/soundcard.h>
 #include <fcntl.h>
 #include <unistd.h>
 #include <errno.h>
 
+/* dfb */
+#include <directfb.h>
+
 #include "oss_api.h"
 #include "hdrec.h"
 
+/* fourier */
+#include "fourier.h"
+
 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");
 	printf("-s \t\t stereo\n");
@@ -47,10 +58,27 @@ int main(int argc,char **argv) {
 	char play_file[MAX_C_FILE];
 	dsp_set	set;
 	unsigned char *buf;
+	unsigned char *buf2=NULL;
 	unsigned char print_info=0;
 	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;
+
+	/* dfb */
+	IDirectFB *dfb;
+	IDirectFBSurface *primary;
+	DFBSurfaceDescription dsc;
+	int width,height;
+
+	/* fourier */
+	t_fourier fourier;
+	int sample;
+	int dx;
+	int a_f;
 
 	/* defaults */
 	strcpy(device,"");
@@ -69,13 +97,16 @@ int main(int argc,char **argv) {
 					print_info=1;
 					break;
 				case 'r':
-					mode=RECORD;
+					mode|=RECORD;
 					strcpy(record_file,argv[++i]);
 					break;
 				case 'p':
-					mode=PLAY;
+					mode|=PLAY;
 					strcpy(play_file,argv[++i]);
 					break;
+				case 'R':
+					mode|=REVERSED;
+					break;
 				case 's':
 					set.channel=STEREO;
 					break;
@@ -181,16 +212,88 @@ int main(int argc,char **argv) {
 		return -1;
 	}
 
-	if(mode&PLAY) {
+	if((mode&RECORD) && (mode&PLAY)) {
+		if((buf2=malloc(set.bufsize*sizeof(unsigned char)))==NULL) {
+			printf("allocating 2nd memory failed :(\n");
+			perror("malloc");
+			return -1;
+		}
+	}
+
+	if((mode&PLAY) && (!(mode&RECORD))) {
+
+	/* dfb */
+	DirectFBInit(&argc,&argv);
+	DirectFBCreate(&dfb);
+	dfb->SetCooperativeLevel(dfb,DFSCL_FULLSCREEN);
+	dsc.flags=DSDESC_CAPS;
+	dsc.caps=DSCAPS_PRIMARY|DSCAPS_FLIPPING;
+	dfb->CreateSurface(dfb,&dsc,&primary);
+	primary->GetSize(primary,&width,&height);
+	dprintf(1,"graphical equalizer dims: %dx%d\n",width,height);
+	primary->SetColor(primary,0x80,0x80,0xff,0xff);
+	//primary->Flip(primary,NULL,DSFLIP_WAITFORSYNC);
+
+	/* fourier */
+	fourier_init(&fourier,1);
+	fourier.type=FWD|DFT;
+	fourier.dim=1;
+	fourier.data_len[0]=set.bufsize/(set.format&AFMT_S16_LE?4:2);
+	fourier_alloc_data(&fourier);
+	printf("debug: allocated size for %d samples to do dft\n",fourier.data_len[0]);
+	dx=8*width/fourier.data_len[0];
+	printf("debug: dx = %d ???\n",dx);
+
 		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) {
+				/* read samples */
+				rw=read(pfile_fd,buf,set.bufsize);
+				/* do fourier trafo */
+				for(sample=0;sample<fourier.data_len[0];sample++) fourier.data[sample].r=*((signed short *)buf+(set.format&AFMT_S16_LE?2:1)*sample);
+				fourier_dft_1d(&fourier);
+				/* print graph */
+				primary->Clear(primary,0,0,0,0xff);
+				a_f=dx*fourier.data_len[0]*440/set.freq;
+				primary->DrawLine(primary,a_f,height,a_f,0);
+				for(sample=0;sample<fourier.data_len[0]/8;sample++) primary->FillRectangle(primary,sample*dx,0,dx,height*sqrt(fourier.ftdata[sample].r*fourier.ftdata[sample].r+fourier.ftdata[sample].i*fourier.ftdata[sample].i)/0x7fff);
+				primary->Flip(primary,NULL,DSFLIP_WAITFORSYNC);
+				//fcount=0;
+
+				//}
+
+				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);
+			}
 		}
+
+		/* dfb release */
+		primary->Release(primary);
+		dfb->Release(dfb);
+
 	}
 
-	if(mode&RECORD) {
+	if((mode&RECORD) && (!(mode&PLAY))) {
 		printf("recording to file %s ...\n",record_file);
 		rw=1;
 		while(rw) {
@@ -199,6 +302,42 @@ int main(int argc,char **argv) {
 		}
 	}
 
+	if((mode&RECORD) && (mode&PLAY)) {
+		FD_ZERO(&read_fds);
+		FD_ZERO(&write_fds);
+		/* read_fds */
+		FD_SET(0,&read_fds);
+		FD_SET(pfile_fd,&read_fds);
+		FD_SET(audio_fd,&read_fds);
+		/* write_fds */
+		FD_SET(sfile_fd,&write_fds);
+		FD_SET(audio_fd,&write_fds);
+		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)) {
+					read(0,&c,1);
+				}
+				if(FD_ISSET(pfile_fd,&read_fds)) {
+					read(pfile_fd,buf2,set.bufsize);
+				}
+				if(FD_ISSET(audio_fd,&read_fds)) {
+					read(audio_fd,buf,set.bufsize);
+				}
+				if(FD_ISSET(sfile_fd,&write_fds)) {
+					write(sfile_fd,buf,set.bufsize);
+				}
+				if(FD_ISSET(audio_fd,&write_fds)) {
+					write(audio_fd,buf2,set.bufsize);
+				}
+			}
+		}
+	}
+
 	if(mode&CONVERT) {
 		if((tmp=lseek(pfile_fd,0,SEEK_END))==-1) {
 			printf("cannot determine filesize :(\n");