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      1 /* Copyright (c) 2012-2016, The Linux Foundation. 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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      7  *       notice, this list of conditions and the following disclaimer.
      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.
     12  *     * Neither the name of The Linux Foundation nor the names of its
     13  *       contributors may be used to endorse or promote products derived
     14  *       from this software without specific prior written permission.
     15  *
     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 
     33 // System dependencies
     34 #include <linux/msm_ion.h>
     35 #include <utils/Mutex.h>
     36 
     37 // Camera dependencies
     38 #include "camera3.h"
     39 
     40 extern "C" {
     41 #include "mm_camera_interface.h"
     42 }
     43 
     44 using namespace android;
     45 
     46 namespace qcamera {
     47 
     48 // Base class for all memory types. Abstract.
     49 class QCamera3Memory {
     50 
     51 public:
     52     int cleanCache(uint32_t index)
     53     {
     54         return cacheOps(index, ION_IOC_CLEAN_CACHES);
     55     }
     56     int invalidateCache(uint32_t index)
     57     {
     58         return cacheOps(index, ION_IOC_INV_CACHES);
     59     }
     60     int cleanInvalidateCache(uint32_t index)
     61     {
     62         return cacheOps(index, ION_IOC_CLEAN_INV_CACHES);
     63     }
     64     int getFd(uint32_t index);
     65     ssize_t getSize(uint32_t index);
     66     uint32_t getCnt();
     67 
     68     virtual int cacheOps(uint32_t index, unsigned int cmd) = 0;
     69     virtual int getMatchBufIndex(void *object) = 0;
     70     virtual void *getPtr(uint32_t index) = 0;
     71 
     72     virtual int32_t markFrameNumber(uint32_t index, uint32_t frameNumber) = 0;
     73     virtual int32_t getFrameNumber(uint32_t index) = 0;
     74     virtual int32_t getBufferIndex(uint32_t frameNumber) = 0;
     75     virtual int32_t getOldestFrameNumber(uint32_t &index) = 0;
     76 
     77     QCamera3Memory();
     78     virtual ~QCamera3Memory();
     79 
     80     int32_t getBufDef(const cam_frame_len_offset_t &offset,
     81             mm_camera_buf_def_t &bufDef, uint32_t index);
     82 
     83 protected:
     84     struct QCamera3MemInfo {
     85         int fd;
     86         ion_user_handle_t handle;
     87         size_t size;
     88     };
     89 
     90     int cacheOpsInternal(uint32_t index, unsigned int cmd, void *vaddr);
     91     virtual void *getPtrLocked(uint32_t index) = 0;
     92 
     93     uint32_t mBufferCount;
     94     struct QCamera3MemInfo mMemInfo[MM_CAMERA_MAX_NUM_FRAMES];
     95     void *mPtr[MM_CAMERA_MAX_NUM_FRAMES];
     96     int32_t mCurrentFrameNumbers[MM_CAMERA_MAX_NUM_FRAMES];
     97     Mutex mLock;
     98     int main_ion_fd = -1;
     99 };
    100 
    101 // Internal heap memory is used for memories used internally
    102 // They are allocated from /dev/ion. Examples are: capabilities,
    103 // parameters, metadata, and internal YUV data for jpeg encoding.
    104 class QCamera3HeapMemory : public QCamera3Memory {
    105 public:
    106     QCamera3HeapMemory(uint32_t maxCnt);
    107     virtual ~QCamera3HeapMemory();
    108 
    109     int allocate(size_t size);
    110     int allocateOne(size_t size);
    111     void deallocate();
    112 
    113     virtual int cacheOps(uint32_t index, unsigned int cmd);
    114     virtual int getMatchBufIndex(void *object);
    115     virtual void *getPtr(uint32_t index);
    116 
    117     virtual int32_t markFrameNumber(uint32_t index, uint32_t frameNumber);
    118     virtual int32_t getFrameNumber(uint32_t index);
    119     virtual int32_t getBufferIndex(uint32_t frameNumber);
    120     virtual int32_t getOldestFrameNumber(uint32_t &index);
    121 
    122 protected:
    123     virtual void *getPtrLocked(uint32_t index);
    124 private:
    125     int allocOneBuffer(struct QCamera3MemInfo &memInfo,
    126             unsigned int heap_id, size_t size);
    127     void deallocOneBuffer(struct QCamera3MemInfo &memInfo);
    128     uint32_t mMaxCnt;
    129 };
    130 
    131 // Gralloc Memory shared with frameworks
    132 class QCamera3GrallocMemory : public QCamera3Memory {
    133 public:
    134     QCamera3GrallocMemory(uint32_t startIdx);
    135     virtual ~QCamera3GrallocMemory();
    136 
    137     int registerBuffer(buffer_handle_t *buffer, cam_stream_type_t type);
    138     int32_t unregisterBuffer(size_t idx);
    139     void unregisterBuffers();
    140     virtual int cacheOps(uint32_t index, unsigned int cmd);
    141     virtual int getMatchBufIndex(void *object);
    142     virtual void *getPtr(uint32_t index);
    143 
    144     virtual int32_t markFrameNumber(uint32_t index, uint32_t frameNumber);
    145     virtual int32_t getFrameNumber(uint32_t index);
    146     virtual int32_t getBufferIndex(uint32_t frameNumber);
    147     virtual int32_t getOldestFrameNumber(uint32_t &index);
    148 
    149     void *getBufferHandle(uint32_t index);
    150 protected:
    151     virtual void *getPtrLocked(uint32_t index);
    152 private:
    153     int32_t unregisterBufferLocked(size_t idx);
    154     int32_t getFreeIndexLocked();
    155     buffer_handle_t *mBufferHandle[MM_CAMERA_MAX_NUM_FRAMES];
    156     struct private_handle_t *mPrivateHandle[MM_CAMERA_MAX_NUM_FRAMES];
    157 
    158     uint32_t mStartIdx;
    159 };
    160 };
    161 #endif
    162