begin plibsys refactor

1 files changed, 44 insertions, 0 deletions

diff --git a/src/sound.c b/src/sound.c
new file mode 100644
index 0000000..36c1e5b
--- /dev/null
+++ b/src/sound.c
@@ -0,0 +1,44 @@
+#include <stdlib.h>
+#include <string.h>
+#include <mossrose.h>
+#include "sound.h"
+
+
+int sound_copy(struct mossrose_sound_t *dest, struct mossrose_sound_t *src)
+{
+	sound_free_audio(dest);
+	dest->len = src->len;
+	
+	/* left channel */
+	if (src->left != NULL) {
+		dest->left = malloc(src->len * sizeof(float));
+		if (dest->left == NULL) return 1;
+		memcpy(dest->left, src->left, src->len * sizeof(float));
+	}
+	else
+		dest->left = NULL;
+
+	/* right channel */
+	if (src->right != NULL) {
+		dest->right = malloc(src->len * sizeof(float));
+		if (dest->right == NULL) return 1;
+		memcpy(dest->right, src->right, src->len * sizeof(float));
+	}
+	else
+		dest->right = NULL;
+
+	return 0;
+}
+
+
+void sound_free_audio(struct mossrose_sound_t *sound)
+{
+	if (sound->left == NULL) {
+		free(sound->left);
+		sound->left = NULL;
+	}
+	if (sound->right == NULL) {
+		free(sound->right);
+		sound->right = NULL;
+	}
+}