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29 
30 #ifndef __HWC_TONEMAPPER_H__
31 #define __HWC_TONEMAPPER_H__
32 
33 #include <fcntl.h>
34 #include <sys/mman.h>
35 
36 #include <hardware/hwcomposer.h>
37 
38 #include <core/layer_stack.h>
39 #include <utils/sys.h>
40 #include <utils/sync_task.h>
41 #include <vector>
42 #include "hwc_buffer_sync_handler.h"
43 #include "hwc_buffer_allocator.h"
44 
45 class Tonemapper;
46 
47 namespace sdm {
48 
49 enum class ToneMapTaskCode : int32_t {
50   kCodeGetInstance,
51   kCodeBlit,
52   kCodeDestroy,
53 };
54 
55 struct ToneMapGetInstanceContext : public SyncTask<ToneMapTaskCode>::TaskContext {
56   Layer *layer = nullptr;
57 };
58 
59 struct ToneMapBlitContext : public SyncTask<ToneMapTaskCode>::TaskContext {
60   Layer *layer = nullptr;
61   int merged_fd = -1;
62   int fence_fd = -1;
63 };
64 
65 struct ToneMapConfig {
66   int type = 0;
67   ColorPrimaries colorPrimaries = ColorPrimaries_Max;
68   GammaTransfer transfer = Transfer_Max;
69   LayerBufferFormat format = kFormatRGBA8888;
70   bool secure = false;
71 };
72 
73 class ToneMapSession : public SyncTask<ToneMapTaskCode>::TaskHandler {
74  public:
75   explicit ToneMapSession(HWCBufferAllocator *buffer_allocator);
76   ~ToneMapSession();
77   DisplayError AllocateIntermediateBuffers(const Layer *layer);
78   void FreeIntermediateBuffers();
79   void UpdateBuffer(int acquire_fence, LayerBuffer *buffer);
80   void SetReleaseFence(int fd);
81   void SetToneMapConfig(Layer *layer);
82   bool IsSameToneMapConfig(Layer *layer);
83 
84   // TaskHandler methods implementation.
85   virtual void OnTask(const ToneMapTaskCode &task_code,
86                       SyncTask<ToneMapTaskCode>::TaskContext *task_context);
87 
88   static const uint8_t kNumIntermediateBuffers = 2;
89   SyncTask<ToneMapTaskCode> tone_map_task_;
90   Tonemapper *gpu_tone_mapper_ = nullptr;
91   HWCBufferAllocator *buffer_allocator_ = nullptr;
92   ToneMapConfig tone_map_config_ = {};
93   uint8_t current_buffer_index_ = 0;
94   std::vector<BufferInfo> buffer_info_ = {};
95   int release_fence_fd_[kNumIntermediateBuffers] = {-1, -1};
96   bool acquired_ = false;
97   int layer_index_ = -1;
98 };
99 
100 class HWCToneMapper {
101  public:
HWCToneMapper(HWCBufferAllocator * allocator)102   explicit HWCToneMapper(HWCBufferAllocator *allocator) : buffer_allocator_(allocator) {}
~HWCToneMapper()103   ~HWCToneMapper() {}
104 
105   int HandleToneMap(LayerStack *layer_stack);
IsActive()106   bool IsActive() { return !tone_map_sessions_.empty(); }
107   void PostCommit(LayerStack *layer_stack);
108   void SetFrameDumpConfig(uint32_t count);
109   void Terminate();
110 
111  private:
112   void ToneMap(Layer *layer, ToneMapSession *session);
113   DisplayError AcquireToneMapSession(Layer *layer, uint32_t *session_index);
114   void DumpToneMapOutput(ToneMapSession *session, int *acquire_fence);
115 
116   std::vector<ToneMapSession*> tone_map_sessions_;
117   HWCBufferSyncHandler buffer_sync_handler_ = {};
118   HWCBufferAllocator *buffer_allocator_ = nullptr;
119   uint32_t dump_frame_count_ = 0;
120   uint32_t dump_frame_index_ = 0;
121   int fb_session_index_ = -1;
122 };
123 
124 }  // namespace sdm
125 #endif  // __HWC_TONEMAPPER_H__
126