[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

mpp/mpi.cpp

@@ -0,0 +1,88 @@
+/*
+ * 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.
+ */
+
+#define MODULE_TAG "mpi"
+
+#include <string.h>
+
+#include "rk_mpi.h"
+
+#include "mpp_log.h"
+#include "mpp_mem.h"
+#include "mpi_impl.h"
+
+
+MPP_RET mpp_init(MppCtx *ctx, MppApi **mpi)
+{
+    MpiImpl *p;
+    MppApi  *api;
+    MPI_FUNCTION_ENTER();
+
+    if (NULL == ctx || NULL == mpi) {
+        mpp_err("mpp_init input ctx %p mpi %p found null pointer\n",
+                ctx, mpi);
+        return MPP_ERR_NULL_PTR;
+    }
+
+    p = mpp_malloc(MpiImpl, 1);
+    if (NULL == p) {
+        mpp_err("mpp_init failed to allocate context\n");
+        return MPP_ERR_MALLOC;
+    }
+
+    api = mpp_malloc(MppApi, 1);
+    if (NULL == api) {
+        mpp_err("mpp_init failed to allocate mpi\n");
+        mpp_free(p);
+        return MPP_ERR_MALLOC;
+    }
+
+    memset(p,   0, sizeof(*p));
+    memset(api, 0, sizeof(*api));
+    p->api      = api;
+    p->check    = p;
+    *ctx = p;
+
+    MPI_FUNCTION_LEAVE_OK();
+    return MPP_OK;
+}
+
+MPP_RET mpp_deinit(MppCtx* ctx)
+{
+    MpiImpl *p;
+    MPI_FUNCTION_ENTER();
+
+    if (NULL == ctx) {
+        mpp_err("mpp_deinit input ctx %p is null pointer\n", ctx);
+        return MPP_ERR_NULL_PTR;
+    }
+
+    p = (MpiImpl*)*ctx;
+
+    if (p->check != p) {
+        mpp_err("mpp_deinit input invalid MppCtx\n");
+        return MPP_ERR_UNKNOW;
+    }
+
+    if (p->api)
+        mpp_free(p->api);
+    if (p)
+        mpp_free(p->api);
+
+    MPI_FUNCTION_LEAVE();
+    return MPP_OK;
+}
+