1 /* 2 * Copyright 2017 The Chromium OS Authors. All rights reserved. 3 * Use of this source code is governed by a BSD-style license that can be 4 * found in the LICENSE file. 5 */ 6 7 #ifndef CROS_GRALLOC_DRIVER_H 8 #define CROS_GRALLOC_DRIVER_H 9 10 #include "cros_gralloc_buffer.h" 11 12 #include <functional> 13 #include <mutex> 14 #include <unordered_map> 15 16 class cros_gralloc_driver 17 { 18 public: 19 cros_gralloc_driver(); 20 ~cros_gralloc_driver(); 21 22 int32_t init(); 23 bool is_supported(const struct cros_gralloc_buffer_descriptor *descriptor); 24 int32_t allocate(const struct cros_gralloc_buffer_descriptor *descriptor, 25 buffer_handle_t *out_handle); 26 27 int32_t retain(buffer_handle_t handle); 28 int32_t release(buffer_handle_t handle); 29 30 int32_t lock(buffer_handle_t handle, int32_t acquire_fence, bool close_acquire_fence, 31 const struct rectangle *rect, uint32_t map_flags, 32 uint8_t *addr[DRV_MAX_PLANES]); 33 int32_t unlock(buffer_handle_t handle, int32_t *release_fence); 34 35 int32_t invalidate(buffer_handle_t handle); 36 int32_t flush(buffer_handle_t handle, int32_t *release_fence); 37 38 int32_t get_backing_store(buffer_handle_t handle, uint64_t *out_store); 39 int32_t resource_info(buffer_handle_t handle, uint32_t strides[DRV_MAX_PLANES], 40 uint32_t offsets[DRV_MAX_PLANES], uint64_t *format_modifier); 41 42 int32_t get_reserved_region(buffer_handle_t handle, void **reserved_region_addr, 43 uint64_t *reserved_region_size); 44 45 uint32_t get_resolved_drm_format(uint32_t drm_format, uint64_t usage); 46 47 void for_each_handle(const std::function<void(cros_gralloc_handle_t)> &function); 48 49 private: 50 cros_gralloc_driver(cros_gralloc_driver const &); 51 cros_gralloc_driver operator=(cros_gralloc_driver const &); 52 cros_gralloc_buffer *get_buffer(cros_gralloc_handle_t hnd); 53 void emplace_buffer(struct bo *bo, struct cros_gralloc_handle *hnd); 54 55 struct driver *drv_; 56 std::mutex mutex_; 57 std::unordered_map<uint32_t, cros_gralloc_buffer *> buffers_; 58 std::unordered_map<cros_gralloc_handle_t, std::pair<cros_gralloc_buffer *, int32_t>> 59 handles_; 60 }; 61 62 #endif 63