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      1 /*
      2  * OMAP3430 support
      3  *
      4  * Author: Michael Barabanov <michael.barabanov (at) windriver.com>
      5  * Author: Srini Gosangi <srini.gosangi (at) windriver.com>
      6 
      7  * Licensed under the Apache License, Version 2.0 (the "License");
      8  * you may not use this file except in compliance with the License.
      9  * You may obtain a copy of the License at
     10  *
     11  *      http://www.apache.org/licenses/LICENSE-2.0
     12  *
     13  * Unless required by applicable law or agreed to in writing, software
     14  * distributed under the License is distributed on an "AS IS" BASIS,
     15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
     16  * express or implied.
     17  * See the License for the specific language governing permissions
     18  */
     19 
     20 /* ------------------------------------------------------------------
     21  * Copyright (C) 2008 PacketVideo
     22  *
     23  * Licensed under the Apache License, Version 2.0 (the "License");
     24  * you may not use this file except in compliance with the License.
     25  * You may obtain a copy of the License at
     26  *
     27  *      http://www.apache.org/licenses/LICENSE-2.0
     28  *
     29  * Unless required by applicable law or agreed to in writing, software
     30  * distributed under the License is distributed on an "AS IS" BASIS,
     31  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
     32  * express or implied.
     33  * See the License for the specific language governing permissions
     34  * and limitations under the License.
     35  * -------------------------------------------------------------------
     36  */
     37 
     38 #define LOG_NDEBUG 0
     39 #define LOG_TAG "BufferAllocOmap34xx"
     40 #include <utils/Log.h>
     41 
     42 #include "buffer_alloc_omap34xx.h"
     43 #include "oscl_mem.h" // needed for oscl_malloc / oscl_free
     44 
     45 /* based on test code in pvmi/media_io/pvmiofileoutput/src/pvmi_media_io_fileoutput.cpp */
     46 
     47 BufferAllocOmap34xx::BufferAllocOmap34xx(): refCount(0), bufferSize(0), maxBuffers(4), numAllocated(0)
     48 {
     49 }
     50 
     51 BufferAllocOmap34xx::~BufferAllocOmap34xx()
     52 {
     53 
     54 }
     55 
     56 OSCL_EXPORT_REF void BufferAllocOmap34xx::addRef()
     57 {
     58     ++refCount;
     59 }
     60 
     61 OSCL_EXPORT_REF void BufferAllocOmap34xx::removeRef()
     62 {
     63     --refCount;
     64     if (refCount <= 0)
     65     {
     66     	LOGV("BufferAllocOmap34xx::removeRef()");
     67        // this->~BufferAllocOmap34xx();
     68     }
     69 }
     70 
     71 
     72 OSCL_EXPORT_REF OsclAny* BufferAllocOmap34xx::allocate()
     73 {
     74     if (numAllocated < maxBuffers)
     75     {
     76         OsclAny* ptr = buffer_address[numAllocated];
     77         if (ptr) ++numAllocated;
     78         return ptr;
     79     }
     80     return NULL;
     81 }
     82 
     83 OSCL_EXPORT_REF void BufferAllocOmap34xx::deallocate(OsclAny* ptr)
     84 {
     85     if (ptr)
     86     {
     87         --numAllocated;
     88     }
     89 }
     90 
     91 OSCL_EXPORT_REF uint32 BufferAllocOmap34xx::getBufferSize()
     92 {
     93     return bufferSize;
     94 }
     95 
     96 OSCL_EXPORT_REF uint32 BufferAllocOmap34xx::getNumBuffers()
     97 {
     98     return maxBuffers;
     99 }
    100 
    101 
    102 OSCL_EXPORT_REF bool BufferAllocOmap34xx::queryInterface(const PVUuid& uuid, PVInterface*& aInterface)
    103 {
    104     aInterface = NULL; // initialize aInterface to NULL in case uuid is not supported
    105 
    106     if (PVMFFixedSizeBufferAllocUUID == uuid)
    107     {
    108         // Send back ptr to the allocator interface object
    109         PVMFFixedSizeBufferAlloc* myInterface	= OSCL_STATIC_CAST(PVMFFixedSizeBufferAlloc*, this);
    110         refCount++; // increment interface refcount before returning ptr
    111         aInterface = OSCL_STATIC_CAST(PVInterface*, myInterface);
    112         return true;
    113     }
    114     return false;
    115 }
    116