1 files changed, 109 insertions, 0 deletions
diff --git a/misc/tsrc.c b/misc/tsrc.c
new file mode 100644
index 0000000..6791b51
--- /dev/null
+++ b/misc/tsrc.c
@@ -0,0 +1,109 @@
+/*
+   tsrc.c
+   David Rowe
+   Sat Nov 3 2012
+
+   Unit test for libresample code.
+
+   build: gcc tsrc.c -o tsrc -lm -lsamplerate
+
+  */
+
+#include <assert.h>
+#include <math.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <samplerate.h>
+#include <unistd.h>
+
+#define N    10000                   /* processing buffer size */
+
+void display_help(void) {
+    fprintf(stderr, "\nusage: tsrc inputRawFile OutputRawFile OutSampleRatio [-l] [-c]\n");
+    fprintf(stderr, "\nUse - for stdin/stdout\n\n");
+    fprintf(stderr, "-l fast linear resampler\n");
+    fprintf(stderr, "-c complex (two channel) resampling\n\n");
+}
+
+int main(int argc, char *argv[]) {
+    FILE       *fin, *fout;
+    short       in_short[N], out_short[N];
+    float       in[N], out[N];
+    SRC_STATE  *src;
+    SRC_DATA    data;
+    int         error, nin, nremaining, i;
+
+    if (argc < 3) {
+	display_help();
+	exit(1);
+    }
+
+    if (strcmp(argv[1], "-") == 0) 
+        fin = stdin;
+    else
+        fin = fopen(argv[1], "rb");
+    assert(fin != NULL);
+
+    if (strcmp(argv[2], "-") == 0) 
+        fout = stdout;
+    else
+        fout = fopen(argv[2], "wb");
+    assert(fout != NULL);
+
+    data.data_in = in;
+    data.data_out = out;
+    data.end_of_input = 0;
+    data.src_ratio = atof(argv[3]);
+
+    int channels = 1;
+    int resampler = SRC_SINC_FASTEST;
+    int opt;
+    while ((opt = getopt(argc, argv, "lc")) != -1) {
+        switch (opt) {
+        case 'l': resampler = SRC_LINEAR; break;
+        case 'c': channels = 2; break;
+        default:
+            display_help();
+            exit(1);
+        }
+    }
+
+    data.input_frames = N/channels;
+    data.output_frames = N/channels;
+
+    src = src_new(resampler, channels, &error);
+    assert(src != NULL);
+
+    int total_in = 0;
+    int total_out = 0;
+
+    nin = data.input_frames;
+    nremaining = 0;
+    while(fread(&in_short[nremaining*channels], sizeof(short)*channels, nin, fin) == nin) {
+	src_short_to_float_array(in_short, in, N);
+	error = src_process(src, &data);
+        assert(error == 0);
+	src_float_to_short_array(out, out_short, data.output_frames_gen*channels);
+
+	fwrite(out_short, sizeof(short), data.output_frames_gen*channels, fout);
+        if (fout == stdout) fflush(stdout);
+
+        nremaining = data.input_frames - data.input_frames_used;
+        nin = data.input_frames_used;
+	//fprintf(stderr, "input frames: %d output_frames %d nremaining: %d\n", 
+        //        (int)data.input_frames_used, (int)data.output_frames_gen, nremaining);
+        for(i=0; i<nremaining*channels; i++)
+            in_short[i] = in_short[i+nin*channels];
+
+        total_in  += data.input_frames_used;
+        total_out += data.output_frames_gen;
+    }
+
+    //fprintf(stderr, "total_in: %d total_out: %d\n", total_in, total_out);
+
+    fclose(fout);
+    fclose(fin);
+
+    return 0;
+}