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      1 /* Copyright (c) 2012-2015, The Linux Foundataion. All rights reserved.
      2  *
      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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      8  *     * Redistributions in binary form must reproduce the above
      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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     13  *       contributors may be used to endorse or promote products derived
     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(int index) {return cacheOps(index, ION_IOC_CLEAN_CACHES);}
     50     int invalidateCache(int index) {return cacheOps(index, ION_IOC_INV_CACHES);}
     51     int cleanInvalidateCache(int index) {return cacheOps(index, ION_IOC_CLEAN_INV_CACHES);}
     52     int getFd(int index);
     53     int getSize(int index);
     54     int getCnt();
     55 
     56     virtual int cacheOps(int index, unsigned int cmd) = 0;
     57     virtual int getRegFlags(uint8_t *regFlags) = 0;
     58     virtual int getMatchBufIndex(void *object) = 0;
     59     virtual void *getPtr(int index) = 0;
     60 
     61     QCamera3Memory();
     62     virtual ~QCamera3Memory();
     63 
     64     int32_t getBufDef(const cam_frame_len_offset_t &offset,
     65                 mm_camera_buf_def_t &bufDef, int index);
     66 
     67 protected:
     68     struct QCamera3MemInfo {
     69         int fd;
     70         int main_ion_fd;
     71         ion_user_handle_t handle;
     72         uint32_t size;
     73     };
     74 
     75     int cacheOpsInternal(int index, unsigned int cmd, void *vaddr);
     76     virtual void *getPtrLocked(int index) = 0;
     77 
     78     int mBufferCount;
     79     struct QCamera3MemInfo mMemInfo[MM_CAMERA_MAX_NUM_FRAMES];
     80     void *mPtr[MM_CAMERA_MAX_NUM_FRAMES];
     81     Mutex mLock;
     82 };
     83 
     84 // Internal heap memory is used for memories used internally
     85 // They are allocated from /dev/ion. Examples are: capabilities,
     86 // parameters, metadata, and internal YUV data for jpeg encoding.
     87 class QCamera3HeapMemory : public QCamera3Memory {
     88 public:
     89     QCamera3HeapMemory();
     90     virtual ~QCamera3HeapMemory();
     91 
     92     int allocate(int count, int size, bool queueAll);
     93     void deallocate();
     94 
     95     virtual int cacheOps(int index, unsigned int cmd);
     96     virtual int getRegFlags(uint8_t *regFlags);
     97     virtual int getMatchBufIndex(void *object);
     98     virtual void *getPtr(int index);
     99 protected:
    100     virtual void *getPtrLocked(int index);
    101 private:
    102     int alloc(int count, int size, int heap_id);
    103     void dealloc();
    104 
    105     int allocOneBuffer(struct QCamera3MemInfo &memInfo, int heap_id, int size);
    106     void deallocOneBuffer(struct QCamera3MemInfo &memInfo);
    107     bool mQueueAll;
    108 };
    109 
    110 // Gralloc Memory shared with frameworks
    111 class QCamera3GrallocMemory : public QCamera3Memory {
    112 public:
    113     QCamera3GrallocMemory();
    114     virtual ~QCamera3GrallocMemory();
    115 
    116     int registerBuffer(buffer_handle_t *buffer, cam_stream_type_t type);
    117     int32_t unregisterBuffer(size_t idx);
    118     void unregisterBuffers();
    119     virtual int cacheOps(int index, unsigned int cmd);
    120     virtual int getRegFlags(uint8_t *regFlags);
    121     virtual int getMatchBufIndex(void *object);
    122     virtual void *getPtr(int index);
    123     int32_t markFrameNumber(int index, uint32_t frameNumber);
    124     int32_t getFrameNumber(int index);
    125     void *getBufferHandle(int index);
    126 protected:
    127     virtual void *getPtrLocked(int index);
    128 private:
    129     int32_t unregisterBufferLocked(size_t idx);
    130     int32_t getFreeIndexLocked();
    131     buffer_handle_t *mBufferHandle[MM_CAMERA_MAX_NUM_FRAMES];
    132     struct private_handle_t *mPrivateHandle[MM_CAMERA_MAX_NUM_FRAMES];
    133     uint32_t mCurrentFrameNumbers[MM_CAMERA_MAX_NUM_FRAMES];
    134 };
    135 
    136 };
    137 #endif
    138