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      1 /*
      2 ** Copyright (c) 2011-2012 The Linux Foundation. All rights reserved.
      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 
     18 #ifndef __QCAMERAHWI_MEM_H
     19 #define __QCAMERAHWI_MEM_H
     20 
     21 #include <binder/MemoryBase.h>
     22 #include <binder/MemoryHeapBase.h>
     23 #include <utils/threads.h>
     24 #include <stdint.h>
     25 #include "QCamera_Intf.h"
     26 
     27 extern "C" {
     28 #include <linux/android_pmem.h>
     29 #include <linux/msm_ion.h>
     30 }
     31 
     32 
     33 #define VIDEO_BUFFER_COUNT 5
     34 #define VIDEO_BUFFER_COUNT_LOW_POWER_CAMCORDER 9
     35 
     36 #define PREVIEW_BUFFER_COUNT 5
     37 
     38 namespace android {
     39 
     40 // This class represents a heap which maintains several contiguous
     41 // buffers.  The heap may be backed by pmem (when pmem_pool contains
     42 // the name of a /dev/pmem* file), or by ashmem (when pmem_pool == NULL).
     43 
     44 struct MemPool : public RefBase {
     45     MemPool(int buffer_size, int num_buffers,
     46             int frame_size,
     47             const char *name);
     48 
     49     virtual ~MemPool() = 0;
     50 
     51     void completeInitialization();
     52     bool initialized() const {
     53         return mHeap != NULL && mHeap->base() != MAP_FAILED;
     54     }
     55 
     56     virtual status_t dump(int fd, const Vector<String16>& args) const;
     57 
     58     int mBufferSize;
     59     int mAlignedBufferSize;
     60     int mNumBuffers;
     61     int mFrameSize;
     62     sp<MemoryHeapBase> mHeap;
     63     sp<MemoryBase> *mBuffers;
     64 
     65     const char *mName;
     66 };
     67 
     68 class AshmemPool : public MemPool {
     69 public:
     70     AshmemPool(int buffer_size, int num_buffers,
     71                int frame_size,
     72                const char *name);
     73 };
     74 
     75 class PmemPool : public MemPool {
     76 public:
     77     PmemPool(const char *pmem_pool,
     78              int flags, int pmem_type,
     79              int buffer_size, int num_buffers,
     80              int frame_size, int cbcr_offset,
     81              int yoffset, const char *name);
     82     virtual ~PmemPool();
     83     int mFd;
     84     int mPmemType;
     85     int mCbCrOffset;
     86     int myOffset;
     87     int mCameraControlFd;
     88     uint32_t mAlignedSize;
     89     struct pmem_region mSize;
     90 };
     91 
     92 class IonPool : public MemPool {
     93 public:
     94     IonPool( int flags,
     95              int buffer_size, int num_buffers,
     96              int frame_size, int cbcr_offset,
     97              int yoffset, const char *name);
     98     virtual ~IonPool();
     99     int mFd;
    100     int mCbCrOffset;
    101     int myOffset;
    102     int mCameraControlFd;
    103     uint32_t mAlignedSize;
    104 private:
    105     static const char mIonDevName[];
    106 };
    107 
    108 };
    109 #endif
    110