1 /*
2 * Copyright (C) 2018 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #define LOG_TAG "drmhwc"
18
19 #include "BufferInfoMinigbm.h"
20
21 #include <xf86drm.h>
22 #include <xf86drmMode.h>
23
24 #include <cerrno>
25 #include <cstring>
26
27 #include "utils/log.h"
28 namespace android {
29
30 LEGACY_BUFFER_INFO_GETTER(BufferInfoMinigbm);
31
32 constexpr int CROS_GRALLOC_DRM_GET_FORMAT = 1;
33 constexpr int CROS_GRALLOC_DRM_GET_DIMENSIONS = 2;
34 constexpr int CROS_GRALLOC_DRM_GET_BUFFER_INFO = 4;
35 constexpr int CROS_GRALLOC_DRM_GET_USAGE = 5;
36
37 struct cros_gralloc0_buffer_info {
38 uint32_t drm_fourcc;
39 int num_fds;
40 int fds[4];
41 uint64_t modifier;
42 int offset[4];
43 int stride[4];
44 };
45
GetBoInfo(buffer_handle_t handle)46 auto BufferInfoMinigbm::GetBoInfo(buffer_handle_t handle)
47 -> std::optional<BufferInfo> {
48 if (handle == nullptr) {
49 return {};
50 }
51
52 BufferInfo bi{};
53
54 uint32_t width{};
55 uint32_t height{};
56 if (gralloc_->perform(gralloc_, CROS_GRALLOC_DRM_GET_DIMENSIONS, handle,
57 &width, &height) != 0) {
58 ALOGE(
59 "CROS_GRALLOC_DRM_GET_DIMENSIONS operation has failed. "
60 "Please ensure you are using the latest minigbm.");
61 return {};
62 }
63
64 int32_t droid_format{};
65 if (gralloc_->perform(gralloc_, CROS_GRALLOC_DRM_GET_FORMAT, handle,
66 &droid_format) != 0) {
67 ALOGE(
68 "CROS_GRALLOC_DRM_GET_FORMAT operation has failed. "
69 "Please ensure you are using the latest minigbm.");
70 return {};
71 }
72
73 uint32_t usage{};
74 if (gralloc_->perform(gralloc_, CROS_GRALLOC_DRM_GET_USAGE, handle, &usage) !=
75 0) {
76 ALOGE(
77 "CROS_GRALLOC_DRM_GET_USAGE operation has failed. "
78 "Please ensure you are using the latest minigbm.");
79 return {};
80 }
81
82 struct cros_gralloc0_buffer_info info {};
83 if (gralloc_->perform(gralloc_, CROS_GRALLOC_DRM_GET_BUFFER_INFO, handle,
84 &info) != 0) {
85 ALOGE(
86 "CROS_GRALLOC_DRM_GET_BUFFER_INFO operation has failed. "
87 "Please ensure you are using the latest minigbm.");
88 return {};
89 }
90
91 bi.width = width;
92 bi.height = height;
93
94 bi.format = info.drm_fourcc;
95
96 for (int i = 0; i < info.num_fds; i++) {
97 bi.modifiers[i] = info.modifier;
98 bi.prime_fds[i] = info.fds[i];
99 bi.pitches[i] = info.stride[i];
100 bi.offsets[i] = info.offset[i];
101 }
102
103 return bi;
104 }
105
106 constexpr char cros_gralloc_module_name[] = "CrOS Gralloc";
107
ValidateGralloc()108 int BufferInfoMinigbm::ValidateGralloc() {
109 if (strcmp(gralloc_->common.name, cros_gralloc_module_name) != 0) {
110 ALOGE("Gralloc name isn't valid: Expected: \"%s\", Actual: \"%s\"",
111 cros_gralloc_module_name, gralloc_->common.name);
112 return -EINVAL;
113 }
114
115 if (gralloc_->perform == nullptr) {
116 ALOGE(
117 "CrOS gralloc has no perform call implemented. Please upgrade your "
118 "minigbm.");
119 return -EINVAL;
120 }
121
122 return 0;
123 }
124
125 } // namespace android
126