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authorSuper User2007-05-06 15:54:52 +0200
committerSuper User2007-05-06 15:54:52 +0200
commit2ed0fee489c37a6e2d4473f6185ebbe3e746ac11 (patch)
treefcf232bc282c083404cfde0ce5b04236fe202c3e /gentones.c
parentfirst commit (diff)
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only for backup, still in coding state - no compile!!!
Diffstat (limited to 'gentones.c')
-rw-r--r--gentones.c379
1 files changed, 379 insertions, 0 deletions
diff --git a/gentones.c b/gentones.c
new file mode 100644
index 0000000..c7522fd
--- /dev/null
+++ b/gentones.c
@@ -0,0 +1,379 @@
+
+/* isdn tone generation
+ by jolly
+*/
+
+#include <stdio.h>
+#include <math.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+/* ulaw -> signed 16-bit */
+static short isdn_audio_ulaw_to_s16[] =
+{
+ 0x8284, 0x8684, 0x8a84, 0x8e84, 0x9284, 0x9684, 0x9a84, 0x9e84,
+ 0xa284, 0xa684, 0xaa84, 0xae84, 0xb284, 0xb684, 0xba84, 0xbe84,
+ 0xc184, 0xc384, 0xc584, 0xc784, 0xc984, 0xcb84, 0xcd84, 0xcf84,
+ 0xd184, 0xd384, 0xd584, 0xd784, 0xd984, 0xdb84, 0xdd84, 0xdf84,
+ 0xe104, 0xe204, 0xe304, 0xe404, 0xe504, 0xe604, 0xe704, 0xe804,
+ 0xe904, 0xea04, 0xeb04, 0xec04, 0xed04, 0xee04, 0xef04, 0xf004,
+ 0xf0c4, 0xf144, 0xf1c4, 0xf244, 0xf2c4, 0xf344, 0xf3c4, 0xf444,
+ 0xf4c4, 0xf544, 0xf5c4, 0xf644, 0xf6c4, 0xf744, 0xf7c4, 0xf844,
+ 0xf8a4, 0xf8e4, 0xf924, 0xf964, 0xf9a4, 0xf9e4, 0xfa24, 0xfa64,
+ 0xfaa4, 0xfae4, 0xfb24, 0xfb64, 0xfba4, 0xfbe4, 0xfc24, 0xfc64,
+ 0xfc94, 0xfcb4, 0xfcd4, 0xfcf4, 0xfd14, 0xfd34, 0xfd54, 0xfd74,
+ 0xfd94, 0xfdb4, 0xfdd4, 0xfdf4, 0xfe14, 0xfe34, 0xfe54, 0xfe74,
+ 0xfe8c, 0xfe9c, 0xfeac, 0xfebc, 0xfecc, 0xfedc, 0xfeec, 0xfefc,
+ 0xff0c, 0xff1c, 0xff2c, 0xff3c, 0xff4c, 0xff5c, 0xff6c, 0xff7c,
+ 0xff88, 0xff90, 0xff98, 0xffa0, 0xffa8, 0xffb0, 0xffb8, 0xffc0,
+ 0xffc8, 0xffd0, 0xffd8, 0xffe0, 0xffe8, 0xfff0, 0xfff8, 0x0000,
+ 0x7d7c, 0x797c, 0x757c, 0x717c, 0x6d7c, 0x697c, 0x657c, 0x617c,
+ 0x5d7c, 0x597c, 0x557c, 0x517c, 0x4d7c, 0x497c, 0x457c, 0x417c,
+ 0x3e7c, 0x3c7c, 0x3a7c, 0x387c, 0x367c, 0x347c, 0x327c, 0x307c,
+ 0x2e7c, 0x2c7c, 0x2a7c, 0x287c, 0x267c, 0x247c, 0x227c, 0x207c,
+ 0x1efc, 0x1dfc, 0x1cfc, 0x1bfc, 0x1afc, 0x19fc, 0x18fc, 0x17fc,
+ 0x16fc, 0x15fc, 0x14fc, 0x13fc, 0x12fc, 0x11fc, 0x10fc, 0x0ffc,
+ 0x0f3c, 0x0ebc, 0x0e3c, 0x0dbc, 0x0d3c, 0x0cbc, 0x0c3c, 0x0bbc,
+ 0x0b3c, 0x0abc, 0x0a3c, 0x09bc, 0x093c, 0x08bc, 0x083c, 0x07bc,
+ 0x075c, 0x071c, 0x06dc, 0x069c, 0x065c, 0x061c, 0x05dc, 0x059c,
+ 0x055c, 0x051c, 0x04dc, 0x049c, 0x045c, 0x041c, 0x03dc, 0x039c,
+ 0x036c, 0x034c, 0x032c, 0x030c, 0x02ec, 0x02cc, 0x02ac, 0x028c,
+ 0x026c, 0x024c, 0x022c, 0x020c, 0x01ec, 0x01cc, 0x01ac, 0x018c,
+ 0x0174, 0x0164, 0x0154, 0x0144, 0x0134, 0x0124, 0x0114, 0x0104,
+ 0x00f4, 0x00e4, 0x00d4, 0x00c4, 0x00b4, 0x00a4, 0x0094, 0x0084,
+ 0x0078, 0x0070, 0x0068, 0x0060, 0x0058, 0x0050, 0x0048, 0x0040,
+ 0x0038, 0x0030, 0x0028, 0x0020, 0x0018, 0x0010, 0x0008, 0x0000
+};
+
+/* alaw -> signed 16-bit */
+static short isdn_audio_alaw_to_s16[] =
+{
+ 0x13fc, 0xec04, 0x0144, 0xfebc, 0x517c, 0xae84, 0x051c, 0xfae4,
+ 0x0a3c, 0xf5c4, 0x0048, 0xffb8, 0x287c, 0xd784, 0x028c, 0xfd74,
+ 0x1bfc, 0xe404, 0x01cc, 0xfe34, 0x717c, 0x8e84, 0x071c, 0xf8e4,
+ 0x0e3c, 0xf1c4, 0x00c4, 0xff3c, 0x387c, 0xc784, 0x039c, 0xfc64,
+ 0x0ffc, 0xf004, 0x0104, 0xfefc, 0x417c, 0xbe84, 0x041c, 0xfbe4,
+ 0x083c, 0xf7c4, 0x0008, 0xfff8, 0x207c, 0xdf84, 0x020c, 0xfdf4,
+ 0x17fc, 0xe804, 0x018c, 0xfe74, 0x617c, 0x9e84, 0x061c, 0xf9e4,
+ 0x0c3c, 0xf3c4, 0x0084, 0xff7c, 0x307c, 0xcf84, 0x030c, 0xfcf4,
+ 0x15fc, 0xea04, 0x0164, 0xfe9c, 0x597c, 0xa684, 0x059c, 0xfa64,
+ 0x0b3c, 0xf4c4, 0x0068, 0xff98, 0x2c7c, 0xd384, 0x02cc, 0xfd34,
+ 0x1dfc, 0xe204, 0x01ec, 0xfe14, 0x797c, 0x8684, 0x07bc, 0xf844,
+ 0x0f3c, 0xf0c4, 0x00e4, 0xff1c, 0x3c7c, 0xc384, 0x03dc, 0xfc24,
+ 0x11fc, 0xee04, 0x0124, 0xfedc, 0x497c, 0xb684, 0x049c, 0xfb64,
+ 0x093c, 0xf6c4, 0x0028, 0xffd8, 0x247c, 0xdb84, 0x024c, 0xfdb4,
+ 0x19fc, 0xe604, 0x01ac, 0xfe54, 0x697c, 0x9684, 0x069c, 0xf964,
+ 0x0d3c, 0xf2c4, 0x00a4, 0xff5c, 0x347c, 0xcb84, 0x034c, 0xfcb4,
+ 0x12fc, 0xed04, 0x0134, 0xfecc, 0x4d7c, 0xb284, 0x04dc, 0xfb24,
+ 0x09bc, 0xf644, 0x0038, 0xffc8, 0x267c, 0xd984, 0x026c, 0xfd94,
+ 0x1afc, 0xe504, 0x01ac, 0xfe54, 0x6d7c, 0x9284, 0x06dc, 0xf924,
+ 0x0dbc, 0xf244, 0x00b4, 0xff4c, 0x367c, 0xc984, 0x036c, 0xfc94,
+ 0x0f3c, 0xf0c4, 0x00f4, 0xff0c, 0x3e7c, 0xc184, 0x03dc, 0xfc24,
+ 0x07bc, 0xf844, 0x0008, 0xfff8, 0x1efc, 0xe104, 0x01ec, 0xfe14,
+ 0x16fc, 0xe904, 0x0174, 0xfe8c, 0x5d7c, 0xa284, 0x05dc, 0xfa24,
+ 0x0bbc, 0xf444, 0x0078, 0xff88, 0x2e7c, 0xd184, 0x02ec, 0xfd14,
+ 0x14fc, 0xeb04, 0x0154, 0xfeac, 0x557c, 0xaa84, 0x055c, 0xfaa4,
+ 0x0abc, 0xf544, 0x0058, 0xffa8, 0x2a7c, 0xd584, 0x02ac, 0xfd54,
+ 0x1cfc, 0xe304, 0x01cc, 0xfe34, 0x757c, 0x8a84, 0x075c, 0xf8a4,
+ 0x0ebc, 0xf144, 0x00d4, 0xff2c, 0x3a7c, 0xc584, 0x039c, 0xfc64,
+ 0x10fc, 0xef04, 0x0114, 0xfeec, 0x457c, 0xba84, 0x045c, 0xfba4,
+ 0x08bc, 0xf744, 0x0018, 0xffe8, 0x227c, 0xdd84, 0x022c, 0xfdd4,
+ 0x18fc, 0xe704, 0x018c, 0xfe74, 0x657c, 0x9a84, 0x065c, 0xf9a4,
+ 0x0cbc, 0xf344, 0x0094, 0xff6c, 0x327c, 0xcd84, 0x032c, 0xfcd4
+};
+
+
+unsigned char encode_isdn(short sample, char law)
+{
+ int best=-1;
+ int i,diff;
+ int best_diff;
+
+ i=0;
+ while(i<256)
+ {
+ diff = (law=='u')?isdn_audio_ulaw_to_s16[i]:isdn_audio_alaw_to_s16[i]-sample;
+//printf("s16=%d sample%d diff=%d\n",isdn_audio_to_s16[i],sample,diff);
+ if (diff<0)
+ diff=0-diff;
+//printf("diff=%d\n",diff);
+
+ if (diff<best_diff || best<0)
+ {
+//printf("better %d\n",i);
+ best_diff=diff;
+ best=i;
+ }
+ i++;
+ }
+ return(best);
+}
+
+
+void write_tone(FILE *fp,double t1,double t2,int length,int fade_in,int fade_out, char law)
+{
+ double x,s,t,fade;
+ int i;
+
+ i=0;
+ while(i<length)
+ {
+ if (i < fade_in)
+ fade=(double)i / (double)fade_in;
+ else fade=1.0;
+ if (length-1-i < fade_out)
+ fade=((double)length-1.0-(double)i) / (double)fade_out;
+
+ s = (double)i / 8000.0 * (double)t1 * 3.1415927F * 2.0;
+ t = (double)i / 8000.0 * (double)t2 * 3.1415927F * 2.0;
+ x = sin(s)+sin(t);
+//printf("%e,%e,%e\n",s,t,x);
+ fputc(encode_isdn((short)(x * 6000.0 * fade), law),fp);
+ i++;
+ }
+}
+
+struct fmt {
+ unsigned short stereo; /* 1 = pcm, 2 = adpcm */
+ unsigned short channels; /* number of channels */
+ unsigned long sample_rate; /* sample rate */
+ unsigned long data_rate; /* data rate */
+ unsigned short bytes_sample; /* bytes per sample (all channels) */
+ unsigned short bits_sample; /* bits per sample (one channel) */
+};
+
+void write_wav(FILE *fp, char *wav, char law)
+{
+ unsigned char buffer[256];
+ struct fmt *fmt;
+ FILE *wfp;
+ signed long i;
+ int channels, bytes;
+ short sample, sample2;
+ signed long size, chunk;
+ int gotfmt = 0, gotdata = 0;
+
+ if ((wfp=fopen(wav,"r")))
+ {
+ fread(buffer,8,1,wfp);
+ size=(buffer[4]) + (buffer[5]<<8) + (buffer[6]<<16) + (buffer[7]<<24);
+ if (!!strncmp((char *)buffer, "RIFF", 4))
+ {
+ fclose(wfp);
+ fprintf(stderr, "Error: %s is no riff file!\n", wav);
+ return;
+ }
+ printf("%c%c%c%c size=%ld\n",buffer[0],buffer[1],buffer[2],buffer[3],size);
+ fread(buffer,4,1,wfp);
+ size -= 4;
+ if (!!strncmp((char *)buffer, "WAVE", 4))
+ {
+ fclose(wfp);
+ fprintf(stderr, "Error: %s is no wave file!\n", wav);
+ return;
+ }
+ while(size > 0)
+ {
+ if (size>0 && size<8)
+ {
+ fclose(wfp);
+ fprintf(stderr, "Error: Remaining file size %ld not large enough for next chunk.\n",size);
+ return;
+ }
+ fread(buffer,8,1,wfp);
+ chunk=(buffer[4]) + (buffer[5]<<8) + (buffer[6]<<16) + (buffer[7]<<24);
+//printf("DEBUG: size(%ld) - (8+chunk(%ld) = size(%ld)\n", size, chunk, size-chunk-8);
+ size -= (8+chunk);
+ if (size < 0)
+ {
+ fclose(wfp);
+ fprintf(stderr, "Error: Chunk '%c%c%c%c' is larger than remainig file size (length=%ld)\n",buffer[0],buffer[1],buffer[2],buffer[3], chunk);
+ return;
+ }
+// printf("%c%c%c%c lenght=%d\n",buffer[0],buffer[1],buffer[2],buffer[3],chunk);
+ if (!strncmp((char *)buffer, "fmt ", 4))
+ {
+ if (chunk != 16)
+ {
+ fclose(wfp);
+ fprintf(stderr, "Error: Fmt chunk illegal size.\n");
+ return;
+ }
+ fread(buffer, chunk, 1, wfp);
+ fmt = (struct fmt *)buffer;
+ if (fmt->channels<1 || fmt->channels>2)
+ {
+ fclose(wfp);
+ fprintf(stderr, "Error: Only support one or two channels file.\n");
+ return;
+ }
+ channels = fmt->channels;
+ printf("Channels: %d\n", channels);
+ if (fmt->sample_rate != 8000)
+ {
+ fprintf(stderr, "Warning: File has sample rate of %ld.\n", fmt->sample_rate);
+ }
+ printf("Sample Rate: %ld\n", fmt->sample_rate);
+ if (fmt->bits_sample!=8 && fmt->bits_sample!=16)
+ {
+ fclose(wfp);
+ fprintf(stderr, "Error: File has neigher 8 nor 16 bit samples.\n");
+ return;
+ }
+ bytes = (fmt->bits_sample==16)?2:1;
+ printf("Bit-Resolution: %d\n", bytes*16-16);
+ gotfmt = 1;
+ } else
+ if (!strncmp((char *)buffer, "data", 4))
+ {
+ if (!gotfmt)
+ {
+ fclose(wfp);
+ fprintf(stderr, "Error: No fmt chunk fount in file.\n");
+ return;
+ }
+ printf("Length: %ld samples (%ld.%03ld seconds)\n", chunk/bytes/channels, chunk/bytes/channels/8000, ((chunk/bytes/channels)%8000)*1000/8000);
+ i=0;
+ if (bytes==2 && channels==1)
+ {
+ while(i<chunk)
+ {
+ fread(buffer, 2, 1, wfp);
+ sample=(buffer[1]<<8) + (buffer[0]);
+ fputc(encode_isdn(sample, law),fp);
+ i+=2;
+ }
+ }
+ if (bytes==2 && channels==2)
+ {
+ while(i<chunk)
+ {
+ fread(buffer, 4, 1, wfp);
+ sample=(buffer[1]<<8) + (buffer[0]);
+ sample2=(buffer[3]<<8) + (buffer[2]);
+ sample = (sample/2) + (sample2/2);
+ fputc(encode_isdn(sample, law),fp);
+ i+=4;
+ }
+ }
+ if (bytes==1 && channels==1)
+ {
+ while(i<chunk)
+ {
+ fread(buffer, 1, 1, wfp);
+ sample=(buffer[0]<<8);
+ fputc(encode_isdn(sample, law),fp);
+ i+=1;
+ }
+ }
+ if (bytes==1 && channels==2)
+ {
+ while(i<chunk)
+ {
+ fread(buffer, 2, 1, wfp);
+ sample=(buffer[0]<<8);
+ sample2=(buffer[1]<<8);
+ sample = (sample/2) + (sample2/2);
+ fputc(encode_isdn(sample, law),fp);
+ i+=2;
+ }
+ }
+ gotdata = 1;
+ } else
+ {
+ printf("Ignoring chunk '%c%c%c%c' (length=%ld)\n",buffer[0],buffer[1],buffer[2],buffer[3], chunk);
+ while(chunk > (signed long)sizeof(buffer))
+ {
+ fread(buffer, sizeof(buffer), 1, wfp);
+ chunk -= sizeof(buffer);
+ }
+ if (chunk)
+ fread(buffer, chunk, 1, wfp);
+ }
+
+ }
+ fclose(wfp);
+ if (!gotdata)
+ {
+ fprintf(stderr, "Error: No data chunk fount in file.\n");
+ return;
+ }
+ }
+}
+
+int main(int argc, char *argv[])
+{
+ FILE *fp;
+
+ if (argc <= 1)
+ {
+ usage:
+ printf("Usage:\n");
+ printf("%s wave2alaw <wav file> <alaw file>\n", argv[0]);
+ printf("%s wave2ulaw <wav file> <ulaw file>\n", argv[0]);
+ printf("%s tone2alaw <frq1> <frq2> <length> <fade in> <fade out> <alaw file>\n", argv[0]);
+ printf("%s tone2ulaw <frq1> <frq2> <length> <fade in> <fade out> <ulaw file>\n", argv[0]);
+ printf("Length and fade lengths must be given in samples (8000 samples are one second).\n");
+ printf("Tones will append to existing files, wav files don't.\n");
+ printf("Frequencies may be given as floating point values.\n");
+ return(0);
+ }
+
+ if (!strcmp(argv[1], "wave2alaw"))
+ {
+ if (argc <= 3)
+ goto usage;
+ if ((fp=fopen(argv[3],"w")))
+ {
+ write_wav(fp,argv[2],'a');
+ fclose(fp);
+ } else
+ {
+ printf("Cannot open isdn file %s\n",argv[3]);
+ }
+ } else
+ if (!strcmp(argv[1], "wave2ulaw"))
+ {
+ if (argc <= 3)
+ goto usage;
+ if ((fp=fopen(argv[3],"w")))
+ {
+ write_wav(fp,argv[2],'u');
+ fclose(fp);
+ } else
+ {
+ printf("Cannot open isdn file %s\n",argv[3]);
+ }
+ } else
+ if (!strcmp(argv[1], "tone2alaw"))
+ {
+ if (argc <= 7)
+ goto usage;
+ if ((fp=fopen(argv[7],"a")))
+ {
+ write_tone(fp,strtod(argv[2],NULL),strtod(argv[3],NULL),atoi(argv[4]),atoi(argv[5]),atoi(argv[6]),'a');
+ fclose(fp);
+ } else
+ {
+ printf("Cannot open isdn file %s\n",argv[7]);
+ }
+
+ } else
+ if (!strcmp(argv[1], "tone2ulaw"))
+ {
+ if (argc <= 7)
+ goto usage;
+ if ((fp=fopen(argv[7],"a")))
+ {
+ write_tone(fp,atoi(argv[2]),atoi(argv[3]),atoi(argv[4]),atoi(argv[5]),atoi(argv[6]),'u');
+ fclose(fp);
+ } else
+ {
+ printf("Cannot open isdn file %s\n",argv[7]);
+ }
+ } else
+ goto usage;
+
+ return(0);
+}