blob: 749ff4745f834e3a58128d21374467d4730232f4 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
// Copyright 2020 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ANDROID_V4L2_CODEC2_PLUGIN_STORE_C2_VDA_POOLED_BLOCK_POOL_H
#define ANDROID_V4L2_CODEC2_PLUGIN_STORE_C2_VDA_POOLED_BLOCK_POOL_H
#include <memory>
#include <mutex>
#include <optional>
#include <set>
#include <C2Buffer.h>
#include <C2BufferPriv.h>
#include <C2PlatformSupport.h>
#include <android-base/thread_annotations.h>
namespace android {
class C2VdaPooledBlockPool : public C2PooledBlockPool {
public:
using C2PooledBlockPool::C2PooledBlockPool;
~C2VdaPooledBlockPool() override = default;
// Extracts the buffer ID from BufferPoolData of the graphic block.
// |block| is the graphic block allocated by bufferpool block pool.
static std::optional<uint32_t> getBufferIdFromGraphicBlock(const C2Block2D& block);
// Allocate the specified number of buffers.
// |bufferCount| is the number of requested buffers.
c2_status_t requestNewBufferSet(int32_t bufferCount);
// Return C2_OK and store a buffer in |block| if a buffer is successfully fetched.
// Return C2_TIMED_OUT if the pool already allocated |mBufferCount| buffers but they are all in
// use.
// Return C2_NO_MEMORY if the pool fails to allocate a new buffer.
c2_status_t fetchGraphicBlock(uint32_t width, uint32_t height, uint32_t format,
C2MemoryUsage usage,
std::shared_ptr<C2GraphicBlock>* block /* nonnull */) override;
private:
// Function mutex to lock at the start of each API function call for protecting the
// synchronization of all member variables.
std::mutex mMutex;
// The ids of all allocated buffers.
std::set<uint32_t> mBufferIds GUARDED_BY(mMutex);
// The maximum count of allocated buffers.
size_t mBufferCount GUARDED_BY(mMutex){0};
};
} // namespace android
#endif // ANDROID_V4L2_CODEC2_PLUGIN_STORE_C2_VDA_POOLED_BLOCK_POOL_H
|
