Added MUS2MID conversion tool

2 files changed, 81 insertions, 0 deletions

diff --git a/utils/mus2mid/CMakeLists.txt b/utils/mus2mid/CMakeLists.txt
new file mode 100644
index 0000000..6430dd4
--- /dev/null
+++ b/utils/mus2mid/CMakeLists.txt
@@ -0,0 +1,7 @@
+add_executable(mus2mid mus2mid.cpp)
+# TODO: Use own library
+target_include_directories(mus2mid PRIVATE ${PROJECT_SOURCE_DIR}/src)
+
+install(TARGETS mus2mid
+        RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}")
+
diff --git a/utils/mus2mid/mus2mid.cpp b/utils/mus2mid/mus2mid.cpp
new file mode 100644
index 0000000..f737f8c
--- /dev/null
+++ b/utils/mus2mid/mus2mid.cpp
@@ -0,0 +1,74 @@
+
+#include "cvt_mus2mid.hpp"
+#include <stdio.h>
+#include <sys/stat.h>
+#if !defined(_WIN32)
+#include <unistd.h>
+#else
+#include <io.h>
+#define fileno(fd) _fileno(fd)
+#define isatty(fd) _isatty(fd)
+#endif
+
+int main(int argc, char *argv[])
+{
+    if(argc != 2)
+    {
+        fprintf(stderr, "Usage: mus2mid <midi-file>\n");
+        return 1;
+    }
+
+    const char *filename = argv[1];
+
+    FILE *fh = fopen(filename, "rb");
+    if(!fh)
+    {
+        fprintf(stderr, "Error opening file.\n");
+        return 1;
+    }
+
+    struct stat st;
+    if(fstat(fileno(fh), &st) != 0)
+    {
+        fprintf(stderr, "Error reading file status.\n");
+        return 1;
+    }
+
+    size_t insize = (size_t)st.st_size;
+    if(insize > 8 * 1024 * 1024)
+    {
+        fprintf(stderr, "File too large.\n");
+        return 1;
+    }
+
+    uint8_t *filedata = new uint8_t[insize];
+    if(fread(filedata, 1, insize, fh) != insize)
+    {
+        fprintf(stderr, "Error reading file data.\n");
+        return 1;
+    }
+
+    uint8_t *xmidata = NULL;
+    uint32_t xmisize = 0;
+    if(Convert_mus2midi(filedata, static_cast<uint32_t>(insize), &xmidata, &xmisize, 0) < 0)
+    {
+        fprintf(stderr, "Error converting MUS to SMF.\n");
+        return 1;
+    }
+
+    FILE *out = stdout;
+    if(isatty(fileno(out)))
+    {
+        fprintf(stderr, "Not writing SMF data on the text terminal.\n");
+    }
+    else
+    {
+        if (fwrite(xmidata, 1, xmisize, out) != xmisize || fflush(out) != 0)
+        {
+            fprintf(stderr, "Error writing SMF data.\n");
+            return 1;
+        }
+    }
+
+    return 0;
+}