1 files changed, 158 insertions, 0 deletions
diff --git a/include/media/stagefright/foundation/AMessage.h b/include/media/stagefright/foundation/AMessage.h
new file mode 100644
index 0000000..e5416e4
--- /dev/null
+++ b/include/media/stagefright/foundation/AMessage.h
@@ -0,0 +1,158 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * 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 A_MESSAGE_H_
+
+#define A_MESSAGE_H_
+
+#include <media/stagefright/foundation/ABase.h>
+#include <media/stagefright/foundation/ALooper.h>
+#include <utils/KeyedVector.h>
+#include <utils/RefBase.h>
+
+namespace android {
+
+struct ABuffer;
+struct AString;
+struct Parcel;
+
+struct AMessage : public RefBase {
+    AMessage(uint32_t what = 0, ALooper::handler_id target = 0);
+
+    static sp<AMessage> FromParcel(const Parcel &parcel);
+    void writeToParcel(Parcel *parcel) const;
+
+    void setWhat(uint32_t what);
+    uint32_t what() const;
+
+    void setTarget(ALooper::handler_id target);
+    ALooper::handler_id target() const;
+
+    void clear();
+
+    void setInt32(const char *name, int32_t value);
+    void setInt64(const char *name, int64_t value);
+    void setSize(const char *name, size_t value);
+    void setFloat(const char *name, float value);
+    void setDouble(const char *name, double value);
+    void setPointer(const char *name, void *value);
+    void setString(const char *name, const char *s, ssize_t len = -1);
+    void setObject(const char *name, const sp<RefBase> &obj);
+    void setBuffer(const char *name, const sp<ABuffer> &buffer);
+    void setMessage(const char *name, const sp<AMessage> &obj);
+
+    void setRect(
+            const char *name,
+            int32_t left, int32_t top, int32_t right, int32_t bottom);
+
+    bool findInt32(const char *name, int32_t *value) const;
+    bool findInt64(const char *name, int64_t *value) const;
+    bool findSize(const char *name, size_t *value) const;
+    bool findFloat(const char *name, float *value) const;
+    bool findDouble(const char *name, double *value) const;
+    bool findPointer(const char *name, void **value) const;
+    bool findString(const char *name, AString *value) const;
+    bool findObject(const char *name, sp<RefBase> *obj) const;
+    bool findBuffer(const char *name, sp<ABuffer> *buffer) const;
+    bool findMessage(const char *name, sp<AMessage> *obj) const;
+
+    bool findRect(
+            const char *name,
+            int32_t *left, int32_t *top, int32_t *right, int32_t *bottom) const;
+
+    void post(int64_t delayUs = 0);
+
+    // Posts the message to its target and waits for a response (or error)
+    // before returning.
+    status_t postAndAwaitResponse(sp<AMessage> *response);
+
+    // If this returns true, the sender of this message is synchronously
+    // awaiting a response, the "replyID" can be used to send the response
+    // via "postReply" below.
+    bool senderAwaitsResponse(uint32_t *replyID) const;
+
+    void postReply(uint32_t replyID);
+
+    // Performs a deep-copy of "this", contained messages are in turn "dup'ed".
+    // Warning: RefBase items, i.e. "objects" are _not_ copied but only have
+    // their refcount incremented.
+    sp<AMessage> dup() const;
+
+    AString debugString(int32_t indent = 0) const;
+
+    enum Type {
+        kTypeInt32,
+        kTypeInt64,
+        kTypeSize,
+        kTypeFloat,
+        kTypeDouble,
+        kTypePointer,
+        kTypeString,
+        kTypeObject,
+        kTypeMessage,
+        kTypeRect,
+        kTypeBuffer,
+    };
+
+    size_t countEntries() const;
+    const char *getEntryNameAt(size_t index, Type *type) const;
+
+protected:
+    virtual ~AMessage();
+
+private:
+    uint32_t mWhat;
+    ALooper::handler_id mTarget;
+
+    struct Rect {
+        int32_t mLeft, mTop, mRight, mBottom;
+    };
+
+    struct Item {
+        union {
+            int32_t int32Value;
+            int64_t int64Value;
+            size_t sizeValue;
+            float floatValue;
+            double doubleValue;
+            void *ptrValue;
+            RefBase *refValue;
+            AString *stringValue;
+            Rect rectValue;
+        } u;
+        const char *mName;
+        Type mType;
+    };
+
+    enum {
+        kMaxNumItems = 32
+    };
+    Item mItems[kMaxNumItems];
+    size_t mNumItems;
+
+    Item *allocateItem(const char *name);
+    void freeItem(Item *item);
+    const Item *findItem(const char *name, Type type) const;
+
+    void setObjectInternal(
+            const char *name, const sp<RefBase> &obj, Type type);
+
+    DISALLOW_EVIL_CONSTRUCTORS(AMessage);
+};
+
+}  // namespace android
+
+#endif  // A_MESSAGE_H_