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      1 /* Copyright (c) 2012-2014, 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:
      6  *     * Redistributions of source code must retain the above copyright
      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
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     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 __QCAMERA2HWI_MEM_H__
     31 #define __QCAMERA2HWI_MEM_H__
     32 
     33 #include <hardware/camera.h>
     34 #include <utils/Mutex.h>
     35 #include <utils/List.h>
     36 
     37 extern "C" {
     38 #include <sys/types.h>
     39 #include <linux/msm_ion.h>
     40 #include <mm_camera_interface.h>
     41 }
     42 
     43 namespace qcamera {
     44 
     45 class QCameraMemoryPool;
     46 
     47 // Base class for all memory types. Abstract.
     48 class QCameraMemory {
     49 
     50 public:
     51     int cleanCache(int index) {return cacheOps(index, ION_IOC_CLEAN_CACHES);}
     52     int invalidateCache(int index) {return cacheOps(index, ION_IOC_INV_CACHES);}
     53     int cleanInvalidateCache(int index) {return cacheOps(index, ION_IOC_CLEAN_INV_CACHES);}
     54     int getFd(int index) const;
     55     int getSize(int index) const;
     56     int getCnt() const;
     57 
     58     virtual int allocate(int count, int size, uint32_t is_secure) = 0;
     59     virtual void deallocate() = 0;
     60     virtual int allocateMore(int count, int size) = 0;
     61     virtual int cacheOps(int index, unsigned int cmd) = 0;
     62     virtual int getRegFlags(uint8_t *regFlags) const = 0;
     63     virtual camera_memory_t *getMemory(int index, bool metadata) const = 0;
     64     virtual int getMatchBufIndex(const void *opaque, bool metadata) const = 0;
     65     virtual void *getPtr(int index) const= 0;
     66 
     67     QCameraMemory(bool cached,
     68                   QCameraMemoryPool *pool = NULL,
     69                   cam_stream_type_t streamType = CAM_STREAM_TYPE_DEFAULT);
     70     virtual ~QCameraMemory();
     71 
     72     void getBufDef(const cam_frame_len_offset_t &offset,
     73                 mm_camera_buf_def_t &bufDef, int index) const;
     74 
     75 protected:
     76 
     77     friend class QCameraMemoryPool;
     78 
     79     struct QCameraMemInfo {
     80         int fd;
     81         int main_ion_fd;
     82         ion_user_handle_t handle;
     83         uint32_t size;
     84         bool cached;
     85         int heap_id;
     86     };
     87 
     88     int alloc(int count, int size, int heap_id, uint32_t is_secure);
     89     void dealloc();
     90     static int allocOneBuffer(struct QCameraMemInfo &memInfo,
     91                               int heap_id,
     92                               int size,
     93                               bool cached,
     94                               uint32_t is_secure);
     95     static void deallocOneBuffer(struct QCameraMemInfo &memInfo);
     96     int cacheOpsInternal(int index, unsigned int cmd, void *vaddr);
     97 
     98     bool m_bCached;
     99     int mBufferCount;
    100     struct QCameraMemInfo mMemInfo[MM_CAMERA_MAX_NUM_FRAMES];
    101     QCameraMemoryPool *mMemoryPool;
    102     cam_stream_type_t mStreamType;
    103 };
    104 
    105 class QCameraMemoryPool {
    106 
    107 public:
    108 
    109     QCameraMemoryPool();
    110     virtual ~QCameraMemoryPool();
    111 
    112     int allocateBuffer(struct QCameraMemory::QCameraMemInfo &memInfo,
    113                        int heap_id,
    114                        int size,
    115                        bool cached,
    116                        cam_stream_type_t streamType,
    117                        int is_secure);
    118     void releaseBuffer(struct QCameraMemory::QCameraMemInfo &memInfo,
    119                        cam_stream_type_t streamType);
    120     void clear();
    121 
    122 protected:
    123 
    124     int findBufferLocked(struct QCameraMemory::QCameraMemInfo &memInfo,
    125                          int heap_id,
    126                          uint32_t size,
    127                          bool cached,
    128                          cam_stream_type_t streamType);
    129 
    130     android::List<QCameraMemory::QCameraMemInfo> mPools[CAM_STREAM_TYPE_MAX];
    131     pthread_mutex_t mLock;
    132 };
    133 
    134 // Internal heap memory is used for memories used internally
    135 // They are allocated from /dev/ion.
    136 class QCameraHeapMemory : public QCameraMemory {
    137 public:
    138     QCameraHeapMemory(bool cached);
    139     virtual ~QCameraHeapMemory();
    140 
    141     virtual int allocate(int count, int size, uint32_t is_secure);
    142     virtual int allocateMore(int count, int size);
    143     virtual void deallocate();
    144     virtual int cacheOps(int index, unsigned int cmd);
    145     virtual int getRegFlags(uint8_t *regFlags) const;
    146     virtual camera_memory_t *getMemory(int index, bool metadata) const;
    147     virtual int getMatchBufIndex(const void *opaque, bool metadata) const;
    148 	virtual void *getPtr(int index) const;
    149 
    150 private:
    151     void *mPtr[MM_CAMERA_MAX_NUM_FRAMES];
    152 };
    153 
    154 // Externel heap memory is used for memories shared with
    155 // framework. They are allocated from /dev/ion or gralloc.
    156 class QCameraStreamMemory : public QCameraMemory {
    157 public:
    158     QCameraStreamMemory(camera_request_memory getMemory,
    159                         bool cached,
    160                         QCameraMemoryPool *pool = NULL,
    161                         cam_stream_type_t streamType = CAM_STREAM_TYPE_DEFAULT);
    162     virtual ~QCameraStreamMemory();
    163 
    164     virtual int allocate(int count, int size, uint32_t is_secure);
    165     virtual int allocateMore(int count, int size);
    166     virtual void deallocate();
    167     virtual int cacheOps(int index, unsigned int cmd);
    168     virtual int getRegFlags(uint8_t *regFlags) const;
    169     virtual camera_memory_t *getMemory(int index, bool metadata) const;
    170     virtual int getMatchBufIndex(const void *opaque, bool metadata) const;
    171 	virtual void *getPtr(int index) const;
    172 
    173 protected:
    174     camera_request_memory mGetMemory;
    175     camera_memory_t *mCameraMemory[MM_CAMERA_MAX_NUM_FRAMES];
    176 };
    177 
    178 // Externel heap memory is used for memories shared with
    179 // framework. They are allocated from /dev/ion or gralloc.
    180 class QCameraVideoMemory : public QCameraStreamMemory {
    181 public:
    182     QCameraVideoMemory(camera_request_memory getMemory, bool cached);
    183     virtual ~QCameraVideoMemory();
    184 
    185     virtual int allocate(int count, int size, uint32_t is_secure);
    186     virtual int allocateMore(int count, int size);
    187     virtual void deallocate();
    188     virtual camera_memory_t *getMemory(int index, bool metadata) const;
    189     virtual int getMatchBufIndex(const void *opaque, bool metadata) const;
    190 
    191 private:
    192     camera_memory_t *mMetadata[MM_CAMERA_MAX_NUM_FRAMES];
    193 };
    194 ;
    195 
    196 // Gralloc Memory is acquired from preview window
    197 class QCameraGrallocMemory : public QCameraMemory {
    198     enum {
    199         BUFFER_NOT_OWNED,
    200         BUFFER_OWNED,
    201     };
    202 public:
    203     QCameraGrallocMemory(camera_request_memory getMemory);
    204     void setNativeWindow(preview_stream_ops_t *anw);
    205     virtual ~QCameraGrallocMemory();
    206 
    207     virtual int allocate(int count, int size, uint32_t is_secure);
    208     virtual int allocateMore(int count, int size);
    209     virtual void deallocate();
    210     virtual int cacheOps(int index, unsigned int cmd);
    211     virtual int getRegFlags(uint8_t *regFlags) const;
    212     virtual camera_memory_t *getMemory(int index, bool metadata) const;
    213     virtual int getMatchBufIndex(const void *opaque, bool metadata) const;
    214 	virtual void *getPtr(int index) const;
    215 
    216     void setWindowInfo(preview_stream_ops_t *window, int width, int height,
    217         int stride, int scanline, int format);
    218     // Enqueue/display buffer[index] onto the native window,
    219     // and dequeue one buffer from it.
    220     // Returns the buffer index of the dequeued buffer.
    221     int displayBuffer(int index);
    222 
    223 private:
    224     buffer_handle_t *mBufferHandle[MM_CAMERA_MAX_NUM_FRAMES];
    225     int mLocalFlag[MM_CAMERA_MAX_NUM_FRAMES];
    226     struct private_handle_t *mPrivateHandle[MM_CAMERA_MAX_NUM_FRAMES];
    227     preview_stream_ops_t *mWindow;
    228     int mWidth, mHeight, mFormat, mStride, mScanline;
    229     camera_request_memory mGetMemory;
    230     camera_memory_t *mCameraMemory[MM_CAMERA_MAX_NUM_FRAMES];
    231     int mMinUndequeuedBuffers;
    232 };
    233 
    234 }; // namespace qcamera
    235 
    236 #endif /* __QCAMERA2HWI_MEM_H__ */
    237