Initial community commit

Src/external_dependencies/openmpt-trunk/contrib/fuzzing/fuzz.c

@@ -0,0 +1,59 @@
+/*
+ * fuzz.c
+ * ------
+ * Purpose: Tiny libopenmpt user to be used by fuzzing tools
+ * Notes  : (currently none)
+ * Authors: OpenMPT Devs
+ * The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
+ */
+
+#include <memory.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+#include <errno.h>
+#include <unistd.h>
+
+#include <libopenmpt/libopenmpt.h>
+#include <libopenmpt/libopenmpt_stream_callbacks_file.h>
+
+#define BUFFERSIZE 450  // shouldn't match OpenMPT's internal mix buffer size (512)
+#define SAMPLERATE 22050
+
+static int16_t buffer[BUFFERSIZE];
+
+int main( int argc, char * argv[] ) {
+	static FILE * file = NULL;
+	static openmpt_module * mod = NULL;
+	static size_t count = 0;
+	static int i = 0;
+	(void)argc;
+#ifdef __AFL_HAVE_MANUAL_CONTROL
+	__AFL_INIT();
+#endif
+	file = fopen( argv[1], "rb" );
+	mod = openmpt_module_create( openmpt_stream_get_file_callbacks(), file, NULL, NULL, NULL );
+	fclose( file );
+	if ( mod == NULL ) return 1;
+	openmpt_module_ctl_set( mod, "render.resampler.emulate_amiga", (openmpt_module_get_num_orders( mod ) & 1) ? "0" : "1" );
+	/* render about a second of the module for fuzzing the actual mix routines */
+	for(; i < 50; i++) {
+		count = openmpt_module_read_mono( mod, SAMPLERATE, BUFFERSIZE, buffer );
+		if ( count == 0 ) {
+			break;
+		}
+	}
+	openmpt_module_set_position_seconds( mod, 1.0 );
+	openmpt_module_read_mono( mod, SAMPLERATE, BUFFERSIZE, buffer );
+	openmpt_module_set_position_order_row( mod, 3, 16 );
+	openmpt_module_read_mono( mod, SAMPLERATE, BUFFERSIZE, buffer );
+
+	/* fuzz string-related stuff */
+	openmpt_free_string ( openmpt_module_get_metadata( mod, "date" ) );
+	openmpt_free_string ( openmpt_module_get_metadata( mod, "message" ) );
+	openmpt_module_destroy( mod );
+	return 0;
+}