Make ipedec a lib and executable

1 files changed, 83 insertions, 0 deletions

diff --git a/test/ipedec.c b/test/ipedec.c
new file mode 100644
index 0000000..1aef1d6
--- /dev/null
+++ b/test/ipedec.c
@@ -0,0 +1,83 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <sys/time.h>
+#include <errno.h>
+#include <libipe.h>
+
+
+int read_raw_file(const char *filename, char **buffer, size_t *length)
+{
+    FILE *fp = fopen(filename, "rb"); 
+    if (fp == NULL)
+        return ENOENT;
+
+    fseek(fp, 0, SEEK_END);
+    *length = ftell(fp);
+    rewind(fp);
+
+    *buffer = (char *) malloc(*length);
+    if (*buffer == NULL) {
+        fclose(fp);
+        return ENOMEM;
+    }
+
+    size_t buffer_length = fread(*buffer, 1, *length, fp);
+    fclose(fp);
+    if (buffer_length != *length) {
+        free(buffer);
+        return ERANGE;
+    }
+    return 0;
+}
+
+
+int main(int argc, char const* argv[])
+{
+    if (argc < 3) {
+        fprintf(stderr, "Usage: ipedec <filename> <number of lines per frame>\n");
+        return EXIT_FAILURE;
+    }
+
+    char *buffer = NULL;
+    size_t num_bytes = 0;
+    if (read_raw_file(argv[1], &buffer, &num_bytes))
+        return EXIT_FAILURE;
+
+    const int rows = atoi(argv[2]);
+
+    ipe_decoder decoder = ipe_decoder_new(rows, (uint32_t *) buffer, num_bytes);
+    int err = 0;
+    uint16_t *pixels = (uint16_t *) malloc(2048 * rows * sizeof(uint16_t));
+    uint32_t frame_number, time_stamp;
+    int num_frames = 0;
+    struct timeval start, end;
+    long seconds = 0L, useconds = 0L;
+
+    /* FILE *fp = fopen("test.raw", "wb"); */
+
+    while (!err) {
+        gettimeofday(&start, NULL);
+        err = ipe_decoder_get_next_frame(decoder, &pixels, &frame_number, &time_stamp);
+        gettimeofday(&end, NULL);
+
+        if (!err) {
+            num_frames++;
+            seconds += end.tv_sec - start.tv_sec;
+            useconds += end.tv_usec - start.tv_usec;
+            /* fwrite(pixels, sizeof(uint16_t), 2048 * 1088, fp); */
+        }
+    }
+    /* fclose(fp); */
+
+    float mtime = seconds * 1000.0 + useconds / 1000.0;
+    printf("Decoded %i frames in %.5fms\n", num_frames, mtime);
+
+    free(pixels);
+    ipe_decoder_free(decoder);
+    free(buffer);
+
+    return 0;
+}
+