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48
49/*! @file blit_engine.h
50  @brief Interface file for Blit based compositior.
51
52  @details The client can use this interface to get the blit composition done
53
54*/
55
56#include <hardware/hwcomposer.h>
57#include <core/layer_stack.h>
58#include <copybit.h>
59#include "blit_engine.h"
60
61#ifndef __BLIT_ENGINE_C2D_H__
62#define __BLIT_ENGINE_C2D_H__
63
64namespace sdm {
65
66// C2D Blit implemented by the client
67// This class implements the BlitEngine Interface which is used to get the
68// Blit composition using C2D
69class BlitEngineC2d : public BlitEngine {
70 public:
71  BlitEngineC2d();
72  virtual ~BlitEngineC2d();
73
74  virtual int Init();
75  virtual void DeInit();
76  virtual int Prepare(LayerStack *layer_stack);
77  virtual int PreCommit(hwc_display_contents_1_t *content_list, LayerStack *layer_stack);
78  virtual int Commit(hwc_display_contents_1_t *content_list, LayerStack *layer_stack);
79  virtual void PostCommit(LayerStack *layer_stack);
80  virtual bool BlitActive();
81  virtual void SetFrameDumpConfig(uint32_t count);
82
83
84 private:
85  static const uint32_t kNumBlitTargetBuffers = 3;
86
87  struct Range {
88    int current;
89    int end;
90  };
91
92  struct RegionIterator : public copybit_region_t {
93    explicit RegionIterator(LayerRectArray rect);
94   private:
95    static int iterate(copybit_region_t const *self, copybit_rect_t *rect);
96    LayerRectArray rect_array;
97    mutable Range r;
98  };
99
100  int AllocateBlitTargetBuffers(uint32_t width, uint32_t height, uint32_t format, uint32_t usage);
101  void FreeBlitTargetBuffers();
102  int ClearTargetBuffer(private_handle_t* hnd, const LayerRect& rect);
103  int DrawRectUsingCopybit(hwc_layer_1_t *hwc_layer, Layer *layer, LayerRect blit_rect,
104                           LayerRect blit_dest_Rect);
105  void SetReleaseFence(int fence_fd);
106  void DumpBlitTargetBuffer(int fd);
107
108  copybit_device_t *blit_engine_c2d_ = NULL;
109  private_handle_t *blit_target_buffer_[kNumBlitTargetBuffers];
110  uint32_t current_blit_target_index_ = 0;
111  int release_fence_fd_[kNumBlitTargetBuffers];
112  uint32_t num_blit_target_ = 0;
113  int blit_target_start_index_ = 0;
114  bool blit_active_ = false;
115  uint32_t dump_frame_count_ = 0;
116  uint32_t dump_frame_index_ = 0;
117};
118
119}  // namespace sdm
120
121#endif  // __BLIT_ENGINE_C2D_H__
122