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      1 /* Copyright (c) 2012-2013, 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
      5  * met:
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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
     17  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
     23  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     24  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
     25  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
     26  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  *
     28  */
     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 namespace qcamera {
     42 
     43 // Base class for all memory types. Abstract.
     44 class QCamera3Memory {
     45 
     46 public:
     47     int cleanCache(int index) {return cacheOps(index, ION_IOC_CLEAN_CACHES);}
     48     int invalidateCache(int index) {return cacheOps(index, ION_IOC_INV_CACHES);}
     49     int cleanInvalidateCache(int index) {return cacheOps(index, ION_IOC_CLEAN_INV_CACHES);}
     50     int getFd(int index) const;
     51     int getSize(int index) const;
     52     int getCnt() const;
     53 
     54     virtual int cacheOps(int index, unsigned int cmd) = 0;
     55     virtual int getRegFlags(uint8_t *regFlags) const = 0;
     56     virtual int getMatchBufIndex(void *object) = 0;
     57     virtual void *getPtr(int index) const= 0;
     58 
     59     QCamera3Memory();
     60     virtual ~QCamera3Memory();
     61 
     62     int32_t getBufDef(const cam_frame_len_offset_t &offset,
     63                 mm_camera_buf_def_t &bufDef, int index) const;
     64 
     65 protected:
     66     struct QCamera3MemInfo {
     67         int fd;
     68         int main_ion_fd;
     69         struct ion_handle *handle;
     70         uint32_t size;
     71     };
     72 
     73     int cacheOpsInternal(int index, unsigned int cmd, void *vaddr);
     74 
     75     int mBufferCount;
     76     struct QCamera3MemInfo mMemInfo[MM_CAMERA_MAX_NUM_FRAMES];
     77     void *mPtr[MM_CAMERA_MAX_NUM_FRAMES];
     78 };
     79 
     80 // Internal heap memory is used for memories used internally
     81 // They are allocated from /dev/ion. Examples are: capabilities,
     82 // parameters, metadata, and internal YUV data for jpeg encoding.
     83 class QCamera3HeapMemory : public QCamera3Memory {
     84 public:
     85     QCamera3HeapMemory();
     86     virtual ~QCamera3HeapMemory();
     87 
     88     int allocate(int count, int size, bool queueAll);
     89     void deallocate();
     90 
     91     virtual int cacheOps(int index, unsigned int cmd);
     92     virtual int getRegFlags(uint8_t *regFlags) const;
     93     virtual int getMatchBufIndex(void *object);
     94     virtual void *getPtr(int index) const;
     95 private:
     96     int alloc(int count, int size, int heap_id);
     97     void dealloc();
     98 
     99     int allocOneBuffer(struct QCamera3MemInfo &memInfo, int heap_id, int size);
    100     void deallocOneBuffer(struct QCamera3MemInfo &memInfo);
    101     bool mQueueAll;
    102 };
    103 
    104 // Gralloc Memory shared with frameworks
    105 class QCamera3GrallocMemory : public QCamera3Memory {
    106 public:
    107     QCamera3GrallocMemory();
    108     virtual ~QCamera3GrallocMemory();
    109 
    110     int registerBuffer(buffer_handle_t *buffer);
    111     void unregisterBuffers();
    112     virtual int cacheOps(int index, unsigned int cmd);
    113     virtual int getRegFlags(uint8_t *regFlags) const;
    114     virtual int getMatchBufIndex(void *object);
    115     virtual void *getPtr(int index) const;
    116     int32_t markFrameNumber(int index, uint32_t frameNumber);
    117     int32_t getFrameNumber(int index);
    118     void *getBufferHandle(int index);
    119 private:
    120     buffer_handle_t *mBufferHandle[MM_CAMERA_MAX_NUM_FRAMES];
    121     struct private_handle_t *mPrivateHandle[MM_CAMERA_MAX_NUM_FRAMES];
    122     uint32_t mCurrentFrameNumbers[MM_CAMERA_MAX_NUM_FRAMES];
    123 };
    124 
    125 };
    126 #endif
    127