1 files changed, 80 insertions, 0 deletions
diff --git a/lib/xlnx-buffers.c b/lib/xlnx-buffers.c
new file mode 100644
index 0000000..34f873a
--- /dev/null
+++ b/lib/xlnx-buffers.c
@@ -0,0 +1,80 @@
+/*
+ * Xilinx Video Library - Buffers Pool
+ *
+ * Copyright (C) 2014-2016 Ideas on board Oy
+ *
+ * Contact: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+ *
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or (at
+ * your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "xlnx-buffers.h"
+
+struct xlnx_video_buffers_pool *xlnx_video_buffers_pool_new(unsigned int nbufs)
+{
+	struct xlnx_video_buffer *buffers;
+	struct xlnx_video_buffers_pool *pool;
+	unsigned int i;
+
+	pool = malloc(sizeof *pool);
+	if (pool == NULL)
+		return NULL;
+
+	buffers = malloc(sizeof *buffers * nbufs);
+	if (buffers == NULL) {
+		free(pool);
+		return NULL;
+	}
+
+	memset(buffers, 0, sizeof *buffers * nbufs);
+
+	for (i = 0; i < nbufs; ++i)
+		buffers[i].index = i;
+
+	pool->nbufs = nbufs;
+	pool->buffers = buffers;
+
+	return pool;
+}
+
+void xlnx_video_buffers_pool_delete(struct xlnx_video_buffers_pool *pool)
+{
+	unsigned int i;
+
+	for (i = 0; i < pool->nbufs; ++i) {
+		if (pool->buffers[i].allocated)
+			free(pool->buffers[i].mem);
+	}
+
+	free(pool->buffers);
+	free(pool);
+}
+
+int xlnx_video_buffers_pool_alloc(struct xlnx_video_buffers_pool *pool,
+				  size_t size, size_t align)
+{
+	unsigned int i;
+	int ret;
+
+	for (i = 0; i < pool->nbufs; ++i) {
+		ret = posix_memalign(&pool->buffers[i].mem, align, size);
+		if (ret != 0)
+			return -ret;
+
+		pool->buffers[i].size = size;
+		pool->buffers[i].allocated = true;
+	}
+
+	return 0;
+}