1 // Copyright 2016 The SwiftShader Authors. All Rights Reserved.
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 #include "GrallocAndroid.hpp"
16 #include "Debug.hpp"
17
18 #ifdef HAVE_GRALLOC1
19 #include <sync/sync.h>
20 #endif
21
getInstance()22 GrallocModule *GrallocModule::getInstance()
23 {
24 static GrallocModule instance;
25 return &instance;
26 }
27
GrallocModule()28 GrallocModule::GrallocModule()
29 {
30 const hw_module_t *module = nullptr;
31 hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &module);
32
33 m_major_version = (module->module_api_version >> 8) & 0xff;
34 switch(m_major_version)
35 {
36 case 0:
37 m_module = reinterpret_cast<const gralloc_module_t*>(module);
38 break;
39 case 1:
40 #ifdef HAVE_GRALLOC1
41 gralloc1_open(module, &m_gralloc1_device);
42 m_gralloc1_lock = (GRALLOC1_PFN_LOCK) m_gralloc1_device->getFunction(m_gralloc1_device, GRALLOC1_FUNCTION_LOCK);
43 m_gralloc1_unlock = (GRALLOC1_PFN_UNLOCK)m_gralloc1_device->getFunction(m_gralloc1_device, GRALLOC1_FUNCTION_UNLOCK);
44 break;
45 #endif
46 default:
47 TRACE("unknown gralloc major version (%d)", m_major_version);
48 break;
49 }
50 }
51
lock(buffer_handle_t handle,int usage,int left,int top,int width,int height,void ** vaddr)52 int GrallocModule::lock(buffer_handle_t handle, int usage, int left, int top, int width, int height, void **vaddr)
53 {
54 switch(m_major_version)
55 {
56 case 0:
57 {
58 return m_module->lock(m_module, handle, usage, left, top, width, height, vaddr);
59 }
60 case 1:
61 #ifdef HAVE_GRALLOC1
62 {
63 gralloc1_rect_t outRect{};
64 outRect.left = left;
65 outRect.top = top;
66 outRect.width = width;
67 outRect.height = height;
68 return m_gralloc1_lock(m_gralloc1_device, handle, usage, usage, &outRect, vaddr, -1);
69 }
70 #endif
71 default:
72 {
73 TRACE("no gralloc module to lock");
74 return -1;
75 }
76 }
77 }
78
unlock(buffer_handle_t handle)79 int GrallocModule::unlock(buffer_handle_t handle)
80 {
81 switch(m_major_version)
82 {
83 case 0:
84 {
85 return m_module->unlock(m_module, handle);
86 }
87 case 1:
88 #ifdef HAVE_GRALLOC1
89 {
90 int32_t fenceFd = -1;
91 int error = m_gralloc1_unlock(m_gralloc1_device, handle, &fenceFd);
92 if (!error)
93 {
94 sync_wait(fenceFd, -1);
95 close(fenceFd);
96 }
97 return error;
98 }
99 #endif
100 default:
101 {
102 TRACE("no gralloc module to unlock");
103 return -1;
104 }
105 }
106 }
107