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1 /*
2 * Copyright (c) 2015-2017, The Linux Foundation. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *  * Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 *  * Redistributions in binary form must reproduce the above
10 *    copyright notice, this list of conditions and the following
11 *    disclaimer in the documentation and/or other materials provided
12 *    with the distribution.
13 *  * Neither the name of The Linux Foundation nor the names of its
14 *    contributors may be used to endorse or promote products derived
15 *    from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
24 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
26 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29 #ifdef USE_GRALLOC1
30 #ifndef __HWC_BUFFER_ALLOCATOR_H__
31 #define __HWC_BUFFER_ALLOCATOR_H__
32 
33 #include <fcntl.h>
34 #include <sys/mman.h>
35 
36 #include <hardware/gralloc1.h>
37 #include "gralloc_priv.h"
38 
39 namespace sdm {
40 
41 template <class Type>
ALIGN(Type x,Type align)42 inline Type ALIGN(Type x, Type align) {
43   return (x + align - 1) & ~(align - 1);
44 }
45 
46 class HWCBufferAllocator : public BufferAllocator {
47  public:
48   DisplayError Init();
49   DisplayError Deinit();
50   DisplayError AllocateBuffer(BufferInfo *buffer_info);
51   DisplayError FreeBuffer(BufferInfo *buffer_info);
52   uint32_t GetBufferSize(BufferInfo *buffer_info);
53 
54   void GetCustomWidthAndHeight(const private_handle_t *handle, int *width, int *height);
55   void GetAlignedWidthAndHeight(int width, int height, int format, uint32_t alloc_type,
56                                 int *aligned_width, int *aligned_height);
57   DisplayError GetAllocatedBufferInfo(const BufferConfig &buffer_config,
58                                       AllocatedBufferInfo *allocated_buffer_info);
59   DisplayError GetBufferLayout(const AllocatedBufferInfo &buf_info,
60                                uint32_t stride[4], uint32_t offset[4],
61                                uint32_t *num_planes);
62   int SetBufferInfo(LayerBufferFormat format, int *target, uint64_t *flags);
63   DisplayError MapBuffer(const private_handle_t *handle, int acquire_fence);
64   DisplayError UnmapBuffer(const private_handle_t *handle, int* release_fence);
65 
66  private:
67   gralloc1_device_t *gralloc_device_ = nullptr;
68   const hw_module_t *module_;
69   GRALLOC1_PFN_RELEASE ReleaseBuffer_ = nullptr;
70   GRALLOC1_PFN_PERFORM Perform_ = nullptr;
71   GRALLOC1_PFN_LOCK Lock_ = nullptr;
72   GRALLOC1_PFN_UNLOCK Unlock_ = nullptr;
73 };
74 
75 }  // namespace sdm
76 #endif  // __HWC_BUFFER_ALLOCATOR_H__
77 #else
78 #include "../hwc/hwc_buffer_allocator.h"
79 #endif  // __HWC_BUFFER_ALLOCATOR_H__
80 
81