media/base/video_frame_pool_unittest.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "media/base/video_frame_pool.h"
   6 #include "testing/gmock/include/gmock/gmock.h"
   7
   8 namespace media {
   9
  10 class VideoFramePoolTest : public ::testing::Test {
  11  public:
  12   VideoFramePoolTest() : pool_(new VideoFramePool()) {}
  13
  14   scoped_refptr<VideoFrame> CreateFrame(VideoFrame::Format format,
  15                                         int timestamp_ms) {
  16     gfx::Size coded_size(320,240);
  17     gfx::Rect visible_rect(coded_size);
  18     gfx::Size natural_size(coded_size);
  19
  20     scoped_refptr<VideoFrame> frame =
  21         pool_->CreateFrame(
  22             format, coded_size, visible_rect, natural_size,
  23             base::TimeDelta::FromMilliseconds(timestamp_ms));
  24     EXPECT_EQ(format, frame->format());
  25     EXPECT_EQ(base::TimeDelta::FromMilliseconds(timestamp_ms),
  26               frame->timestamp());
  27     EXPECT_EQ(coded_size, frame->coded_size());
  28     EXPECT_EQ(visible_rect, frame->visible_rect());
  29     EXPECT_EQ(natural_size, frame->natural_size());
  30
  31     return frame;
  32   }
  33
  34   void CheckPoolSize(size_t size) const {
  35     EXPECT_EQ(size, pool_->GetPoolSizeForTesting());
  36   }
  37
  38  protected:
  39   scoped_ptr<VideoFramePool> pool_;
  40 };
  41
  42 TEST_F(VideoFramePoolTest, SimpleFrameReuse) {
  43   scoped_refptr<VideoFrame> frame = CreateFrame(VideoFrame::YV12, 10);
  44   const uint8* old_y_data = frame->data(VideoFrame::kYPlane);
  45
  46   // Clear frame reference to return the frame to the pool.
  47   frame = NULL;
  48
  49   // Verify that the next frame from the pool uses the same memory.
  50   scoped_refptr<VideoFrame> new_frame = CreateFrame(VideoFrame::YV12, 20);
  51   EXPECT_EQ(old_y_data, new_frame->data(VideoFrame::kYPlane));
  52 }
  53
  54 TEST_F(VideoFramePoolTest, SimpleFormatChange) {
  55   scoped_refptr<VideoFrame> frame_a = CreateFrame(VideoFrame::YV12, 10);
  56   scoped_refptr<VideoFrame> frame_b = CreateFrame(VideoFrame::YV12, 10);
  57
  58   // Clear frame references to return the frames to the pool.
  59   frame_a = NULL;
  60   frame_b = NULL;
  61
  62   // Verify that both frames are in the pool.
  63   CheckPoolSize(2u);
  64
  65   // Verify that requesting a frame with a different format causes the pool
  66   // to get drained.
  67   scoped_refptr<VideoFrame> new_frame = CreateFrame(VideoFrame::YV12A, 10);
  68   CheckPoolSize(0u);
  69 }
  70
  71 TEST_F(VideoFramePoolTest, FrameValidAfterPoolDestruction) {
  72   scoped_refptr<VideoFrame> frame = CreateFrame(VideoFrame::YV12, 10);
  73
  74   // Destroy the pool.
  75   pool_.reset();
  76
  77   // Write to the Y plane. The memory tools should detect a
  78   // use-after-free if the storage was actually removed by pool destruction.
  79   memset(frame->data(VideoFrame::kYPlane), 0xff,
  80          frame->rows(VideoFrame::kYPlane) * frame->stride(VideoFrame::kYPlane));
  81 }
  82
  83 }  // namespace media