git status -u, learn something new every day.

libs/libcodec2/unittest/tsrc.c

@@ -0,0 +1,64 @@
+/* 
+   tsrc.c
+   David Rowe
+   Sat Nov 3 2012
+
+   Unit test for libresample code.
+
+  */
+
+#include <assert.h>
+#include <math.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <samplerate.h>
+
+#define N8   160                     /* processing buffer size at 8 kHz       */
+#define N48  ((int)N8*(48000/8000))  /* buf size assuming 48k max sample rate */
+
+int main(int argc, char *argv[]) {
+    FILE       *f8k, *fout;
+    short       in8k_short[N8];
+    float       in8k[N8];
+    float       out[N48];
+    short       out_short[N48];
+    SRC_STATE  *src;
+    SRC_DATA    data;
+    int         error;
+
+    if (argc != 4) {
+	printf("usage %s inputRawFile OutputRawFile OutputSamplerate\n", argv[0]);
+	exit(0);
+    }
+
+    f8k = fopen(argv[1], "rb");
+    assert(f8k != NULL);
+
+    fout = fopen(argv[2], "wb");
+    assert(fout != NULL);
+    
+    src = src_new(SRC_SINC_FASTEST, 1, &error);
+    assert(src != NULL);
+
+    data.data_in = in8k;
+    data.data_out = out;
+    data.input_frames = N8;
+    data.output_frames = N48;
+    data.end_of_input = 0;
+    data.src_ratio = atof(argv[3])/8000;
+    printf("%f\n", data.src_ratio);
+
+    while(fread(in8k_short, sizeof(short), N8, f8k) == N8) {
+	src_short_to_float_array(in8k_short, in8k, N8);
+	src_process(src, &data);
+	printf("%d %d\n", (int)data.output_frames , (int)data.output_frames_gen);
+	assert(data.output_frames_gen <= N48);
+	src_float_to_short_array(out, out_short, data.output_frames_gen);
+	fwrite(out_short, sizeof(short), data.output_frames_gen, fout);
+    }
+
+    fclose(fout);
+    fclose(f8k);
+
+    return 0;
+}