X-Git-Url: https://git.draconx.ca/gitweb/upkg.git/blobdiff_plain/ca8ee16cfde42ea27d40f8e45fa6d96dc24cd5d9..d82c61e8b0ff6b7660ec0288c50e6f3e6547ed4a:/src/engine/music-modplug.c?ds=sidebyside

diff --git a/src/engine/music-modplug.c b/src/engine/music-modplug.c
new file mode 100644
index 0000000..e0a0695
--- /dev/null
+++ b/src/engine/music-modplug.c
@@ -0,0 +1,108 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <modplug.h>
+#include "modplug-types.h"
+
+#include "music-module.h"
+#include "upkg.h"
+
+struct music_mod {
+	ModPlugFile *f;
+	size_t len, alloc;
+	unsigned char buf[];
+};
+
+#define BUF_INIT_SIZE 65536
+
+int music_mod_init(void)
+{
+	ModPlug_Settings settings = {
+		.mFlags          = MODPLUG_ENABLE_OVERSAMPLING,
+		.mChannels       = 2,
+		.mFrequency      = 44100,
+		.mResamplingMode = MODPLUG_RESAMPLE_SPLINE,
+		.mLoopCount      = -1,
+	};
+
+	ModPlug_SetSettings(&settings);
+	return 0;
+}
+
+void music_mod_exit(void)
+{
+}
+
+static struct music_mod *readfile(struct upkg_file *f)
+{
+	struct music_mod *m = malloc(sizeof *m + BUF_INIT_SIZE);
+	if (!m) return NULL;
+	*m = (struct music_mod) {
+		.alloc = BUF_INIT_SIZE
+	};
+
+	while (1) {
+		struct music_mod *tmp;
+		size_t sz = m->alloc - m->len;
+		
+		m->len += upkg_export_read(f, m->buf + m->len, sz);
+		if (m->alloc != m->len) {
+			if (f->eof) {
+				tmp = realloc(m, sizeof *m + m->len);
+				return tmp ? tmp : m;
+			}
+
+			break;
+		}
+
+		tmp = realloc(m, sizeof *m + 2*m->alloc);
+		if (!tmp)
+			break;
+		m = tmp;
+		m->alloc *= 2;
+	}
+
+	free(m);
+	return NULL;
+}
+
+struct music_mod *music_mod_open(struct upkg_file *f)
+{
+	struct music_mod *m = readfile(f);
+	if (!m) return NULL;
+
+	m->f = ModPlug_Load(m->buf, m->len);
+	if (!m->f) {
+		free(m);
+		return NULL;
+	}
+
+	return m;
+}
+
+int music_mod_dump(struct music_mod *m, FILE *of)
+{
+	if (fwrite(m->buf, m->len, 1, of) != 1)
+		return -1;
+	return 0;
+}
+
+void music_mod_close(struct music_mod *m)
+{
+	ModPlug_Unload(m->f);
+	free(m);
+}
+
+const char *music_mod_type(struct music_mod *m)
+{
+	int type = ModPlug_GetModuleType(m->f);
+
+	if (type & MOD_TYPE_MOD)
+		return "mod";
+	if (type & MOD_TYPE_S3M)
+		return "s3m";
+	if (type & MOD_TYPE_XM)
+		return "xm";
+	if (type & MOD_TYPE_IT)
+		return "it";
+	return "unknown";
+}