56 lines
1.8 KiB
C++
56 lines
1.8 KiB
C++
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/*
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* Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "webrtc/common_video/include/i420_buffer_pool.h"
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#include "webrtc/base/checks.h"
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namespace webrtc {
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I420BufferPool::I420BufferPool(bool zero_initialize)
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: zero_initialize_(zero_initialize) {
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thread_checker_.DetachFromThread();
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}
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void I420BufferPool::Release() {
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thread_checker_.DetachFromThread();
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buffers_.clear();
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}
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rtc::scoped_refptr<I420Buffer> I420BufferPool::CreateBuffer(int width,
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int height) {
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RTC_DCHECK(thread_checker_.CalledOnValidThread());
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// Release buffers with wrong resolution.
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for (auto it = buffers_.begin(); it != buffers_.end();) {
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if ((*it)->width() != width || (*it)->height() != height)
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it = buffers_.erase(it);
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else
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++it;
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}
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// Look for a free buffer.
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for (const rtc::scoped_refptr<PooledI420Buffer>& buffer : buffers_) {
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// If the buffer is in use, the ref count will be >= 2, one from the list we
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// are looping over and one from the application. If the ref count is 1,
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// then the list we are looping over holds the only reference and it's safe
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// to reuse.
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if (buffer->HasOneRef())
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return buffer;
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}
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// Allocate new buffer.
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rtc::scoped_refptr<PooledI420Buffer> buffer =
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new PooledI420Buffer(width, height);
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if (zero_initialize_)
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buffer->InitializeData();
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buffers_.push_back(buffer);
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return buffer;
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}
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} // namespace webrtc
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