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      1 /*
      2  * Copyright (C) 2018 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 OMX_GRAPHIC_BUFFER_SOURCE_H_
     18 
     19 #define OMX_GRAPHIC_BUFFER_SOURCE_H_
     20 
     21 #include <media/stagefright/bqhelper/GraphicBufferSource.h>
     22 #include <media/stagefright/foundation/ABase.h>
     23 
     24 #include <android/BnGraphicBufferSource.h>
     25 #include <android/BnOMXBufferSource.h>
     26 
     27 #include "IOmxNodeWrapper.h"
     28 
     29 namespace android {
     30 
     31 using ::android::binder::Status;
     32 
     33 /*
     34  * This class is used to feed OMX codecs from a Surface via BufferQueue or
     35  * HW producer.
     36  *
     37  * See media/stagefright/bqhelper/GraphicBufferSource.h for documentation.
     38  */
     39 class OmxGraphicBufferSource : public GraphicBufferSource {
     40 public:
     41     OmxGraphicBufferSource() = default;
     42     virtual ~OmxGraphicBufferSource() = default;
     43 
     44     // OmxBufferSource interface
     45     // ------------------------------
     46 
     47     // This is called when OMX transitions to OMX_StateExecuting, which means
     48     // we can start handing it buffers.  If we already have buffers of data
     49     // sitting in the BufferQueue, this will send them to the codec.
     50     Status onOmxExecuting();
     51 
     52     // This is called when OMX transitions to OMX_StateIdle, indicating that
     53     // the codec is meant to return all buffers back to the client for them
     54     // to be freed. Do NOT submit any more buffers to the component.
     55     Status onOmxIdle();
     56 
     57     // This is called when OMX transitions to OMX_StateLoaded, indicating that
     58     // we are shutting down.
     59     Status onOmxLoaded();
     60 
     61     // Rest of the interface in GraphicBufferSource.
     62 
     63     // IGraphicBufferSource interface
     64     // ------------------------------
     65 
     66     // Configure the buffer source to be used with an OMX node with the default
     67     // data space.
     68     status_t configure(
     69         const sp<IOmxNodeWrapper> &omxNode,
     70         int32_t dataSpace,
     71         int32_t bufferCount,
     72         uint32_t frameWidth,
     73         uint32_t frameHeight,
     74         uint32_t consumerUsage);
     75 
     76     // Rest of the interface in GraphicBufferSource.
     77 
     78 private:
     79     DISALLOW_EVIL_CONSTRUCTORS(OmxGraphicBufferSource);
     80 };
     81 
     82 }  // namespace android
     83 
     84 #endif  // OMX_GRAPHIC_BUFFER_SOURCE_H_
     85