1 /*
2 * Copyright (C) 2016 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 ATRACE_TAG ATRACE_TAG_GRAPHICS
18 #define LOG_TAG "hwc-drm-utils"
19
20 #include "drmhwcomposer.h"
21 #include "platform.h"
22
23 #include <log/log.h>
24 #include <ui/GraphicBufferMapper.h>
25
26 #define UNUSED(x) (void)(x)
27
28 namespace android {
29
operator ->() const30 const hwc_drm_bo *DrmHwcBuffer::operator->() const {
31 if (importer_ == NULL) {
32 ALOGE("Access of non-existent BO");
33 exit(1);
34 return NULL;
35 }
36 return &bo_;
37 }
38
Clear()39 void DrmHwcBuffer::Clear() {
40 if (importer_ != NULL) {
41 importer_->ReleaseBuffer(&bo_);
42 importer_ = NULL;
43 }
44 }
45
ImportBuffer(buffer_handle_t handle,Importer * importer)46 int DrmHwcBuffer::ImportBuffer(buffer_handle_t handle, Importer *importer) {
47 hwc_drm_bo tmp_bo;
48
49 int ret = importer->ImportBuffer(handle, &tmp_bo);
50 if (ret)
51 return ret;
52
53 if (importer_ != NULL) {
54 importer_->ReleaseBuffer(&bo_);
55 }
56
57 importer_ = importer;
58
59 bo_ = tmp_bo;
60
61 return 0;
62 }
63
CopyBufferHandle(buffer_handle_t handle,int width,int height,int layerCount,int format,int usage,int stride)64 int DrmHwcNativeHandle::CopyBufferHandle(buffer_handle_t handle, int width,
65 int height, int layerCount, int format,
66 int usage, int stride) {
67 native_handle_t *handle_copy;
68 GraphicBufferMapper &gm(GraphicBufferMapper::get());
69 int ret;
70
71 #ifdef HWC2_USE_OLD_GB_IMPORT
72 UNUSED(width);
73 UNUSED(height);
74 UNUSED(layerCount);
75 UNUSED(format);
76 UNUSED(usage);
77 UNUSED(stride);
78 ret = gm.importBuffer(handle, const_cast<buffer_handle_t *>(&handle_copy));
79 #else
80 ret = gm.importBuffer(handle, width, height, layerCount, format, usage,
81 stride, const_cast<buffer_handle_t *>(&handle_copy));
82 #endif
83 if (ret) {
84 ALOGE("Failed to import buffer handle %d", ret);
85 return ret;
86 }
87
88 Clear();
89
90 handle_ = handle_copy;
91
92 return 0;
93 }
94
~DrmHwcNativeHandle()95 DrmHwcNativeHandle::~DrmHwcNativeHandle() {
96 Clear();
97 }
98
Clear()99 void DrmHwcNativeHandle::Clear() {
100 if (handle_ != NULL) {
101 GraphicBufferMapper &gm(GraphicBufferMapper::get());
102 int ret = gm.freeBuffer(handle_);
103 if (ret) {
104 ALOGE("Failed to free buffer handle %d", ret);
105 }
106 handle_ = NULL;
107 }
108 }
109
ImportBuffer(Importer * importer)110 int DrmHwcLayer::ImportBuffer(Importer *importer) {
111 int ret = buffer.ImportBuffer(sf_handle, importer);
112 if (ret)
113 return ret;
114
115 const hwc_drm_bo *bo = buffer.operator->();
116
117 unsigned int layer_count;
118 for (layer_count = 0; layer_count < HWC_DRM_BO_MAX_PLANES; ++layer_count)
119 if (bo->gem_handles[layer_count] == 0)
120 break;
121
122 ret = handle.CopyBufferHandle(sf_handle, bo->width, bo->height, layer_count,
123 bo->hal_format, bo->usage, bo->pixel_stride);
124 if (ret)
125 return ret;
126
127 gralloc_buffer_usage = bo->usage;
128
129 return 0;
130 }
131
InitFromDrmHwcLayer(DrmHwcLayer * src_layer,Importer * importer)132 int DrmHwcLayer::InitFromDrmHwcLayer(DrmHwcLayer *src_layer,
133 Importer *importer) {
134 blending = src_layer->blending;
135 sf_handle = src_layer->sf_handle;
136 acquire_fence = -1;
137 display_frame = src_layer->display_frame;
138 alpha = src_layer->alpha;
139 source_crop = src_layer->source_crop;
140 transform = src_layer->transform;
141 return ImportBuffer(importer);
142 }
143
SetSourceCrop(hwc_frect_t const & crop)144 void DrmHwcLayer::SetSourceCrop(hwc_frect_t const &crop) {
145 source_crop = crop;
146 }
147
SetDisplayFrame(hwc_rect_t const & frame)148 void DrmHwcLayer::SetDisplayFrame(hwc_rect_t const &frame) {
149 display_frame = frame;
150 }
151
SetTransform(int32_t sf_transform)152 void DrmHwcLayer::SetTransform(int32_t sf_transform) {
153 transform = 0;
154 // 270* and 180* cannot be combined with flips. More specifically, they
155 // already contain both horizontal and vertical flips, so those fields are
156 // redundant in this case. 90* rotation can be combined with either horizontal
157 // flip or vertical flip, so treat it differently
158 if (sf_transform == HWC_TRANSFORM_ROT_270) {
159 transform = DrmHwcTransform::kRotate270;
160 } else if (sf_transform == HWC_TRANSFORM_ROT_180) {
161 transform = DrmHwcTransform::kRotate180;
162 } else {
163 if (sf_transform & HWC_TRANSFORM_FLIP_H)
164 transform |= DrmHwcTransform::kFlipH;
165 if (sf_transform & HWC_TRANSFORM_FLIP_V)
166 transform |= DrmHwcTransform::kFlipV;
167 if (sf_transform & HWC_TRANSFORM_ROT_90)
168 transform |= DrmHwcTransform::kRotate90;
169 }
170 }
171 } // namespace android
172