[mpi]: add basic mpi empty function

git-svn-id: https://10.10.10.66:8443/svn/MediaProcessPlatform/trunk/mpp@114 6e48237b-75ef-9749-8fc9-41990f28c85a

inc/mpp_buffer.h

@@ -0,0 +1,66 @@
+/*
+ * Copyright 2010 Rockchip Electronics S.LSI Co. LTD
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __RK_MPI_BUFFER_H__
+#define __RK_MPI_BUFFER_H__
+
+#include "rk_type.h"
+#include "mpp_err.h"
+
+typedef void* MppBuffer;
+typedef void* MppBufferPool;
+
+typedef struct {
+    RK_U32  api_size;
+    RK_U32  api_version;
+
+    MPP_RET (*commit)(MppBufferPool pool, MppBuffer buffer);
+
+    MPP_RET (*get_unused)(MppBufferPool pool, MppBuffer *buffer);
+    MPP_RET (*ref_used)(MppBufferPool pool, MppBuffer buffer);
+    MPP_RET (*unref_used)(MppBufferPool pool, MppBuffer buffer);
+
+    MPP_RET (*reset)(MppBufferPool pool);
+    RK_S32  (*get_unsed_num)(MppBufferPool pool);
+
+    RK_U32 reserv[16];
+} MppBufferPoolApi;
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * MppBufferPool interface
+ */
+MPP_RET mpp_buffer_init(MppBuffer *buffer, RK_U32 type, RK_U32 size);
+MPP_RET mpp_buffer_deinit(MppBuffer *buffer);
+MPP_RET mpp_buffer_inc_ref(MppBuffer buffer);
+MPP_RET mpp_buffer_dec_ref(MppBuffer buffer);
+
+/*
+ * MppBufferPool interface
+ */
+MPP_RET mpp_buffer_pool_init(MppBufferPool *pool, RK_U32 count, RK_U32 size);
+MPP_RET mpp_buffer_pool_get_api(MppBufferPool pool, MppBufferPoolApi *api);
+MPP_RET mpp_buffer_pool_deinit(MppBufferPool *pool);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /*__RK_MPI_BUFFER_H__*/