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| 1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "content/browser/renderer_host/media/video_capture_buffer_pool.h" | 5 #include "content/browser/renderer_host/media/video_capture_buffer_pool.h" |
| 6 | 6 |
| 7 #include "base/bind.h" | 7 #include "base/bind.h" |
| 8 #include "base/callback.h" | 8 #include "base/callback.h" |
| 9 #include "base/logging.h" | 9 #include "base/logging.h" |
| 10 #include "media/base/video_frame.h" | 10 #include "media/base/video_frame.h" |
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| 121 DCHECK(buffer->held_by_producer); | 121 DCHECK(buffer->held_by_producer); |
| 122 return buffer_id; | 122 return buffer_id; |
| 123 } | 123 } |
| 124 } | 124 } |
| 125 return -1; // Buffer is not from our pool. | 125 return -1; // Buffer is not from our pool. |
| 126 } | 126 } |
| 127 | 127 |
| 128 scoped_refptr<media::VideoFrame> VideoCaptureBufferPool::ReserveI420VideoFrame( | 128 scoped_refptr<media::VideoFrame> VideoCaptureBufferPool::ReserveI420VideoFrame( |
| 129 const gfx::Size& size, | 129 const gfx::Size& size, |
| 130 int rotation) { | 130 int rotation) { |
| 131 if (static_cast<size_t>(size.GetArea() * 3 / 2) != GetMemorySize()) | 131 if (GetMemorySize() != |
| 132 media::VideoFrame::AllocationSize(media::VideoFrame::I420, size)) { |
| 133 DCHECK_EQ(GetMemorySize(), |
| 134 media::VideoFrame::AllocationSize(media::VideoFrame::I420, size)); |
| 132 return NULL; | 135 return NULL; |
| 136 } |
| 133 | 137 |
| 134 base::AutoLock lock(lock_); | 138 base::AutoLock lock(lock_); |
| 135 | 139 |
| 136 int buffer_id = ReserveForProducerInternal(); | 140 int buffer_id = ReserveForProducerInternal(); |
| 137 if (buffer_id < 0) | 141 if (buffer_id < 0) |
| 138 return NULL; | 142 return NULL; |
| 139 | 143 |
| 140 base::Closure disposal_handler = base::Bind( | 144 base::Closure disposal_handler = base::Bind( |
| 141 &VideoCaptureBufferPool::RelinquishProducerReservation, | 145 &VideoCaptureBufferPool::RelinquishProducerReservation, |
| 142 this, | 146 this, |
| 143 buffer_id); | 147 buffer_id); |
| 144 | 148 |
| 145 Buffer* buffer = buffers_[buffer_id]; | 149 Buffer* buffer = buffers_[buffer_id]; |
| 146 // Wrap the buffer in a VideoFrame container. | 150 // Wrap the buffer in a VideoFrame container. |
| 147 scoped_refptr<media::VideoFrame> frame = | 151 scoped_refptr<media::VideoFrame> frame = |
| 148 media::VideoFrame::WrapExternalSharedMemory( | 152 media::VideoFrame::WrapExternalSharedMemory( |
| 149 media::VideoFrame::I420, | 153 media::VideoFrame::I420, |
| 150 size, | 154 size, |
| 151 gfx::Rect(size), | 155 gfx::Rect(size), |
| 152 size, | 156 size, |
| 153 static_cast<uint8*>(buffer->shared_memory.memory()), | 157 static_cast<uint8*>(buffer->shared_memory.memory()), |
| 158 GetMemorySize(), |
| 154 buffer->shared_memory.handle(), | 159 buffer->shared_memory.handle(), |
| 155 base::TimeDelta(), | 160 base::TimeDelta(), |
| 156 disposal_handler); | 161 disposal_handler); |
| 157 | 162 |
| 158 if (buffer->rotation != rotation) { | 163 if (buffer->rotation != rotation) { |
| 159 // TODO(nick): Generalize the |rotation| mechanism. | 164 // TODO(nick): Generalize the |rotation| mechanism. |
| 160 media::FillYUV(frame.get(), 0, 128, 128); | 165 media::FillYUV(frame.get(), 0, 128, 128); |
| 161 buffer->rotation = rotation; | 166 buffer->rotation = rotation; |
| 162 } | 167 } |
| 163 | 168 |
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| 200 return buffer_id; | 205 return buffer_id; |
| 201 } | 206 } |
| 202 | 207 |
| 203 bool VideoCaptureBufferPool::IsAllocated() const { | 208 bool VideoCaptureBufferPool::IsAllocated() const { |
| 204 lock_.AssertAcquired(); | 209 lock_.AssertAcquired(); |
| 205 return !buffers_.empty(); | 210 return !buffers_.empty(); |
| 206 } | 211 } |
| 207 | 212 |
| 208 } // namespace content | 213 } // namespace content |
| 209 | 214 |
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