1/*
2 * Copyright (C) 2007 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 "GraphicBufferMapper"
18#define ATRACE_TAG ATRACE_TAG_GRAPHICS
19//#define LOG_NDEBUG 0
20
21#include <ui/GraphicBufferMapper.h>
22
23#include <grallocusage/GrallocUsageConversion.h>
24
25// We would eliminate the non-conforming zero-length array, but we can't since
26// this is effectively included from the Linux kernel
27#pragma clang diagnostic push
28#pragma clang diagnostic ignored "-Wzero-length-array"
29#include <sync/sync.h>
30#pragma clang diagnostic pop
31
32#include <utils/Log.h>
33#include <utils/Trace.h>
34
35#include <ui/Gralloc2.h>
36#include <ui/GraphicBuffer.h>
37
38#include <system/graphics.h>
39
40namespace android {
41// ---------------------------------------------------------------------------
42
43ANDROID_SINGLETON_STATIC_INSTANCE( GraphicBufferMapper )
44
45GraphicBufferMapper::GraphicBufferMapper()
46  : mMapper(std::make_unique<const Gralloc2::Mapper>())
47{
48}
49
50status_t GraphicBufferMapper::importBuffer(buffer_handle_t rawHandle,
51        buffer_handle_t* outHandle)
52{
53    ATRACE_CALL();
54
55    Gralloc2::Error error = mMapper->importBuffer(
56            hardware::hidl_handle(rawHandle), outHandle);
57
58    ALOGW_IF(error != Gralloc2::Error::NONE, "importBuffer(%p) failed: %d",
59            rawHandle, error);
60
61    return static_cast<status_t>(error);
62}
63
64status_t GraphicBufferMapper::freeBuffer(buffer_handle_t handle)
65{
66    ATRACE_CALL();
67
68    mMapper->freeBuffer(handle);
69
70    return NO_ERROR;
71}
72
73static inline Gralloc2::IMapper::Rect asGralloc2Rect(const Rect& rect) {
74    Gralloc2::IMapper::Rect outRect{};
75    outRect.left = rect.left;
76    outRect.top = rect.top;
77    outRect.width = rect.width();
78    outRect.height = rect.height();
79    return outRect;
80}
81
82status_t GraphicBufferMapper::lock(buffer_handle_t handle, uint32_t usage,
83        const Rect& bounds, void** vaddr)
84{
85    return lockAsync(handle, usage, bounds, vaddr, -1);
86}
87
88status_t GraphicBufferMapper::lockYCbCr(buffer_handle_t handle, uint32_t usage,
89        const Rect& bounds, android_ycbcr *ycbcr)
90{
91    return lockAsyncYCbCr(handle, usage, bounds, ycbcr, -1);
92}
93
94status_t GraphicBufferMapper::unlock(buffer_handle_t handle)
95{
96    int32_t fenceFd = -1;
97    status_t error = unlockAsync(handle, &fenceFd);
98    if (error == NO_ERROR) {
99        sync_wait(fenceFd, -1);
100        close(fenceFd);
101    }
102    return error;
103}
104
105status_t GraphicBufferMapper::lockAsync(buffer_handle_t handle,
106        uint32_t usage, const Rect& bounds, void** vaddr, int fenceFd)
107{
108    return lockAsync(handle, usage, usage, bounds, vaddr, fenceFd);
109}
110
111status_t GraphicBufferMapper::lockAsync(buffer_handle_t handle,
112        uint64_t producerUsage, uint64_t consumerUsage, const Rect& bounds,
113        void** vaddr, int fenceFd)
114{
115    ATRACE_CALL();
116
117    const uint64_t usage = static_cast<uint64_t>(
118            android_convertGralloc1To0Usage(producerUsage, consumerUsage));
119    Gralloc2::Error error = mMapper->lock(handle, usage,
120            asGralloc2Rect(bounds), fenceFd, vaddr);
121
122    ALOGW_IF(error != Gralloc2::Error::NONE, "lock(%p, ...) failed: %d",
123            handle, error);
124
125    return static_cast<status_t>(error);
126}
127
128static inline bool isValidYCbCrPlane(const android_flex_plane_t& plane) {
129    if (plane.bits_per_component != 8) {
130        ALOGV("Invalid number of bits per component: %d",
131                plane.bits_per_component);
132        return false;
133    }
134    if (plane.bits_used != 8) {
135        ALOGV("Invalid number of bits used: %d", plane.bits_used);
136        return false;
137    }
138
139    bool hasValidIncrement = plane.h_increment == 1 ||
140            (plane.component != FLEX_COMPONENT_Y && plane.h_increment == 2);
141    hasValidIncrement = hasValidIncrement && plane.v_increment > 0;
142    if (!hasValidIncrement) {
143        ALOGV("Invalid increment: h %d v %d", plane.h_increment,
144                plane.v_increment);
145        return false;
146    }
147
148    return true;
149}
150
151status_t GraphicBufferMapper::lockAsyncYCbCr(buffer_handle_t handle,
152        uint32_t usage, const Rect& bounds, android_ycbcr *ycbcr, int fenceFd)
153{
154    ATRACE_CALL();
155
156    Gralloc2::YCbCrLayout layout;
157    Gralloc2::Error error = mMapper->lock(handle, usage,
158            asGralloc2Rect(bounds), fenceFd, &layout);
159    if (error == Gralloc2::Error::NONE) {
160        ycbcr->y = layout.y;
161        ycbcr->cb = layout.cb;
162        ycbcr->cr = layout.cr;
163        ycbcr->ystride = static_cast<size_t>(layout.yStride);
164        ycbcr->cstride = static_cast<size_t>(layout.cStride);
165        ycbcr->chroma_step = static_cast<size_t>(layout.chromaStep);
166    }
167
168    return static_cast<status_t>(error);
169}
170
171status_t GraphicBufferMapper::unlockAsync(buffer_handle_t handle, int *fenceFd)
172{
173    ATRACE_CALL();
174
175    *fenceFd = mMapper->unlock(handle);
176
177    return NO_ERROR;
178}
179
180// ---------------------------------------------------------------------------
181}; // namespace android
182