add minimp4.c and BUILD.gn

Signed-off-by: zhangtl <tongliangzhang@bestechnic.com>

BUILD.gn

@@ -0,0 +1,89 @@
+#
+# Copyright (c) 2020 Huawei Device 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.
+#
+
+minimp4_sources = [
+    "minimp4.c",
+]
+
+if (defined(ohos_lite)) {
+  import("//build/lite/config/component/lite_component.gni")
+  import("//build/lite/ndk/ndk.gni")
+  defines = []
+
+  config("minimp4_config") {
+    include_dirs = [
+      "minimp4",
+    ]
+  }
+
+  lite_library("minimp4_shared") {
+    target_type = "shared_library"
+    public_configs = [ ":minimp4_config" ]
+    output_name = "minimp4"
+    sources = minimp4_sources
+  }
+
+  lite_library("minimp4_static") {
+    target_type = "static_library"
+    public_configs = [ ":minimp4_config" ]
+    if (ohos_kernel_type == "liteos_m") {
+      include_dirs = [
+        "//kernel/liteos_m/kal/posix/include",
+        "//kernel/liteos_m/kernel/include",
+        "//kernel/liteos_m/utils",
+        "//third_party/musl/porting/liteos_m/kernel/include/",
+      ]
+    }
+    output_name = "minimp4"
+    sources = minimp4_sources
+  }
+
+  group("minimp4") {
+    if (ohos_kernel_type == "liteos_m") {
+      deps = [ ":minimp4_static" ]
+    } else {
+      deps = [ ":minimp4_shared" ]
+    }
+  }
+
+  ndk_lib("minimp4_ndk") {
+    if (ohos_kernel_type == "liteos_m") {
+      lib_extension = ".a"
+    } else {
+      lib_extension = ".so"
+    }
+    deps = [ ":minimp4" ]
+    head_files = [ "include" ]
+  }
+} else {
+  import("//build/ohos.gni")
+  config("minimp4_config") {
+    include_dirs = [
+      "minimp4",
+    ]
+  }
+
+  ohos_shared_library("minimp4_shared") {
+    public_configs = [ ":minimp4_config" ]
+    output_name = "minimp4"
+    subsystem_name = "common"
+    part_name = "dsoftbus_standard"
+    sources = minimp4_sources
+  }
+
+  group("minimp4") {
+    deps = [ ":minimp4_shared" ]
+  }
+}

minimp4.c

@@ -0,0 +1,4 @@
+#define MINIMP4_IMPLEMENTATION
+#include <stddef.h>
+#include "minimp4.h"
+#undef MINIMP4_IMPLEMENTATION