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      1 /*
      2  * Copyright (C) 2011 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef SIMPLE_SOFT_OMX_COMPONENT_H_
     18 
     19 #define SIMPLE_SOFT_OMX_COMPONENT_H_
     20 
     21 #include "SoftOMXComponent.h"
     22 
     23 #include <media/stagefright/foundation/AHandlerReflector.h>
     24 #include <utils/RefBase.h>
     25 #include <utils/threads.h>
     26 #include <utils/Vector.h>
     27 
     28 namespace android {
     29 
     30 struct ALooper;
     31 
     32 struct SimpleSoftOMXComponent : public SoftOMXComponent {
     33     SimpleSoftOMXComponent(
     34             const char *name,
     35             const OMX_CALLBACKTYPE *callbacks,
     36             OMX_PTR appData,
     37             OMX_COMPONENTTYPE **component);
     38 
     39     virtual void prepareForDestruction();
     40 
     41     void onMessageReceived(const sp<AMessage> &msg);
     42 
     43 protected:
     44     struct BufferInfo {
     45         OMX_BUFFERHEADERTYPE *mHeader;
     46         bool mOwnedByUs;
     47     };
     48 
     49     struct PortInfo {
     50         OMX_PARAM_PORTDEFINITIONTYPE mDef;
     51         Vector<BufferInfo> mBuffers;
     52         List<BufferInfo *> mQueue;
     53 
     54         enum {
     55             NONE,
     56             DISABLING,
     57             ENABLING,
     58         } mTransition;
     59     };
     60 
     61     enum {
     62         kStoreMetaDataExtensionIndex = OMX_IndexVendorStartUnused + 1,
     63         kPrepareForAdaptivePlaybackIndex,
     64     };
     65 
     66     void addPort(const OMX_PARAM_PORTDEFINITIONTYPE &def);
     67 
     68     virtual OMX_ERRORTYPE internalGetParameter(
     69             OMX_INDEXTYPE index, OMX_PTR params);
     70 
     71     virtual OMX_ERRORTYPE internalSetParameter(
     72             OMX_INDEXTYPE index, const OMX_PTR params);
     73 
     74     virtual void onQueueFilled(OMX_U32 portIndex);
     75     List<BufferInfo *> &getPortQueue(OMX_U32 portIndex);
     76 
     77     virtual void onPortFlushCompleted(OMX_U32 portIndex);
     78     virtual void onPortEnableCompleted(OMX_U32 portIndex, bool enabled);
     79     virtual void onReset();
     80 
     81     PortInfo *editPortInfo(OMX_U32 portIndex);
     82 
     83 private:
     84     enum {
     85         kWhatSendCommand,
     86         kWhatEmptyThisBuffer,
     87         kWhatFillThisBuffer,
     88     };
     89 
     90     Mutex mLock;
     91 
     92     sp<ALooper> mLooper;
     93     sp<AHandlerReflector<SimpleSoftOMXComponent> > mHandler;
     94 
     95     OMX_STATETYPE mState;
     96     OMX_STATETYPE mTargetState;
     97 
     98     Vector<PortInfo> mPorts;
     99 
    100     bool isSetParameterAllowed(
    101             OMX_INDEXTYPE index, const OMX_PTR params) const;
    102 
    103     virtual OMX_ERRORTYPE sendCommand(
    104             OMX_COMMANDTYPE cmd, OMX_U32 param, OMX_PTR data);
    105 
    106     virtual OMX_ERRORTYPE getParameter(
    107             OMX_INDEXTYPE index, OMX_PTR params);
    108 
    109     virtual OMX_ERRORTYPE setParameter(
    110             OMX_INDEXTYPE index, const OMX_PTR params);
    111 
    112     virtual OMX_ERRORTYPE useBuffer(
    113             OMX_BUFFERHEADERTYPE **buffer,
    114             OMX_U32 portIndex,
    115             OMX_PTR appPrivate,
    116             OMX_U32 size,
    117             OMX_U8 *ptr);
    118 
    119     virtual OMX_ERRORTYPE allocateBuffer(
    120             OMX_BUFFERHEADERTYPE **buffer,
    121             OMX_U32 portIndex,
    122             OMX_PTR appPrivate,
    123             OMX_U32 size);
    124 
    125     virtual OMX_ERRORTYPE freeBuffer(
    126             OMX_U32 portIndex,
    127             OMX_BUFFERHEADERTYPE *buffer);
    128 
    129     virtual OMX_ERRORTYPE emptyThisBuffer(
    130             OMX_BUFFERHEADERTYPE *buffer);
    131 
    132     virtual OMX_ERRORTYPE fillThisBuffer(
    133             OMX_BUFFERHEADERTYPE *buffer);
    134 
    135     virtual OMX_ERRORTYPE getState(OMX_STATETYPE *state);
    136 
    137     void onSendCommand(OMX_COMMANDTYPE cmd, OMX_U32 param);
    138     void onChangeState(OMX_STATETYPE state);
    139     void onPortEnable(OMX_U32 portIndex, bool enable);
    140     void onPortFlush(OMX_U32 portIndex, bool sendFlushComplete);
    141 
    142     void checkTransitions();
    143 
    144     DISALLOW_EVIL_CONSTRUCTORS(SimpleSoftOMXComponent);
    145 };
    146 
    147 }  // namespace android
    148 
    149 #endif  // SIMPLE_SOFT_OMX_COMPONENT_H_
    150