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      1 /* Copyright (c) 2012-2015, The Linux Foundataion. All rights reserved.
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      3  * Redistribution and use in source and binary forms, with or without
      4  * modification, are permitted provided that the following conditions are
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      9  *       copyright notice, this list of conditions and the following
     10  *       disclaimer in the documentation and/or other materials provided
     11  *       with the distribution.
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     14  *       from this software without specific prior written permission.
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     16  * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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     26  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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     29 
     30 #ifndef __QCAMERA3HWI_MEM_H__
     31 #define __QCAMERA3HWI_MEM_H__
     32 #include <hardware/camera3.h>
     33 #include <utils/Mutex.h>
     34 
     35 extern "C" {
     36 #include <sys/types.h>
     37 #include <linux/msm_ion.h>
     38 #include <mm_camera_interface.h>
     39 }
     40 
     41 using namespace android;
     42 
     43 namespace qcamera {
     44 
     45 // Base class for all memory types. Abstract.
     46 class QCamera3Memory {
     47 
     48 public:
     49     int cleanCache(uint32_t index)
     50     {
     51         return cacheOps(index, ION_IOC_CLEAN_CACHES);
     52     }
     53     int invalidateCache(uint32_t index)
     54     {
     55         return cacheOps(index, ION_IOC_INV_CACHES);
     56     }
     57     int cleanInvalidateCache(uint32_t index)
     58     {
     59         return cacheOps(index, ION_IOC_CLEAN_INV_CACHES);
     60     }
     61     int getFd(uint32_t index);
     62     ssize_t getSize(uint32_t index);
     63     uint32_t getCnt();
     64 
     65     virtual int cacheOps(uint32_t index, unsigned int cmd) = 0;
     66     virtual int getMatchBufIndex(void *object) = 0;
     67     virtual void *getPtr(uint32_t index) = 0;
     68 
     69     virtual int32_t markFrameNumber(uint32_t index, uint32_t frameNumber) = 0;
     70     virtual int32_t getFrameNumber(uint32_t index) = 0;
     71     virtual int32_t getBufferIndex(uint32_t frameNumber) = 0;
     72 
     73     QCamera3Memory();
     74     virtual ~QCamera3Memory();
     75 
     76     int32_t getBufDef(const cam_frame_len_offset_t &offset,
     77             mm_camera_buf_def_t &bufDef, uint32_t index);
     78 
     79 protected:
     80     struct QCamera3MemInfo {
     81         int fd;
     82         int main_ion_fd;
     83         ion_user_handle_t handle;
     84         size_t size;
     85     };
     86 
     87     int cacheOpsInternal(uint32_t index, unsigned int cmd, void *vaddr);
     88     virtual void *getPtrLocked(uint32_t index) = 0;
     89 
     90     uint32_t mBufferCount;
     91     struct QCamera3MemInfo mMemInfo[MM_CAMERA_MAX_NUM_FRAMES];
     92     void *mPtr[MM_CAMERA_MAX_NUM_FRAMES];
     93     int32_t mCurrentFrameNumbers[MM_CAMERA_MAX_NUM_FRAMES];
     94     Mutex mLock;
     95 };
     96 
     97 // Internal heap memory is used for memories used internally
     98 // They are allocated from /dev/ion. Examples are: capabilities,
     99 // parameters, metadata, and internal YUV data for jpeg encoding.
    100 class QCamera3HeapMemory : public QCamera3Memory {
    101 public:
    102     QCamera3HeapMemory(uint32_t maxCnt);
    103     virtual ~QCamera3HeapMemory();
    104 
    105     int allocate(size_t size);
    106     int allocateOne(size_t size);
    107     void deallocate();
    108 
    109     virtual int cacheOps(uint32_t index, unsigned int cmd);
    110     virtual int getMatchBufIndex(void *object);
    111     virtual void *getPtr(uint32_t index);
    112 
    113     virtual int32_t markFrameNumber(uint32_t index, uint32_t frameNumber);
    114     virtual int32_t getFrameNumber(uint32_t index);
    115     virtual int32_t getBufferIndex(uint32_t frameNumber);
    116 
    117 protected:
    118     virtual void *getPtrLocked(uint32_t index);
    119 private:
    120     int allocOneBuffer(struct QCamera3MemInfo &memInfo,
    121             unsigned int heap_id, size_t size);
    122     void deallocOneBuffer(struct QCamera3MemInfo &memInfo);
    123     bool mQueueAll;
    124     uint32_t mMaxCnt;
    125 };
    126 
    127 // Gralloc Memory shared with frameworks
    128 class QCamera3GrallocMemory : public QCamera3Memory {
    129 public:
    130     QCamera3GrallocMemory(uint32_t startIdx);
    131     virtual ~QCamera3GrallocMemory();
    132 
    133     int registerBuffer(buffer_handle_t *buffer, cam_stream_type_t type);
    134     int32_t unregisterBuffer(size_t idx);
    135     void unregisterBuffers();
    136     virtual int cacheOps(uint32_t index, unsigned int cmd);
    137     virtual int getMatchBufIndex(void *object);
    138     virtual void *getPtr(uint32_t index);
    139 
    140     virtual int32_t markFrameNumber(uint32_t index, uint32_t frameNumber);
    141     virtual int32_t getFrameNumber(uint32_t index);
    142     virtual int32_t getBufferIndex(uint32_t frameNumber);
    143 
    144     void *getBufferHandle(uint32_t index);
    145 protected:
    146     virtual void *getPtrLocked(uint32_t index);
    147 private:
    148     int32_t unregisterBufferLocked(size_t idx);
    149     int32_t getFreeIndexLocked();
    150     buffer_handle_t *mBufferHandle[MM_CAMERA_MAX_NUM_FRAMES];
    151     struct private_handle_t *mPrivateHandle[MM_CAMERA_MAX_NUM_FRAMES];
    152 
    153     uint32_t mStartIdx;
    154 };
    155 };
    156 #endif
    157