media/base/decoder_buffer_queue_unittest.cc

   1 // Copyright (c) 2012 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/buffers.h"
   6 #include "media/base/decoder_buffer.h"
   7 #include "media/base/decoder_buffer_queue.h"
   8 #include "testing/gtest/include/gtest/gtest.h"
   9
  10 namespace media {
  11
  12 static base::TimeDelta ToTimeDelta(int seconds) {
  13   if (seconds < 0)
  14     return kNoTimestamp();
  15   return base::TimeDelta::FromSeconds(seconds);
  16 }
  17
  18 // Helper to create buffers with specified timestamp in seconds.
  19 //
  20 // Negative numbers will be converted to kNoTimestamp();
  21 static scoped_refptr<DecoderBuffer> CreateBuffer(int timestamp) {
  22   scoped_refptr<DecoderBuffer> buffer = new DecoderBuffer(0);
  23   buffer->SetTimestamp(ToTimeDelta(timestamp));
  24   buffer->SetDuration(ToTimeDelta(0));
  25   return buffer;
  26 }
  27
  28 TEST(DecoderBufferQueueTest, IsEmpty) {
  29   DecoderBufferQueue queue;
  30   EXPECT_TRUE(queue.IsEmpty());
  31
  32   queue.Push(CreateBuffer(0));
  33   EXPECT_FALSE(queue.IsEmpty());
  34 }
  35
  36 TEST(DecoderBufferQueueTest, Clear) {
  37   DecoderBufferQueue queue;
  38   queue.Push(CreateBuffer(0));
  39   queue.Push(CreateBuffer(1));
  40   EXPECT_FALSE(queue.IsEmpty());
  41   EXPECT_EQ(1, queue.Duration().InSeconds());
  42
  43   queue.Clear();
  44   EXPECT_TRUE(queue.IsEmpty());
  45   EXPECT_EQ(0, queue.Duration().InSeconds());
  46 }
  47
  48 TEST(DecoderBufferQueueTest, Duration) {
  49   DecoderBufferQueue queue;
  50   EXPECT_EQ(0, queue.Duration().InSeconds());
  51
  52   queue.Push(CreateBuffer(0));
  53   EXPECT_EQ(0, queue.Duration().InSeconds());
  54
  55   queue.Push(CreateBuffer(1));
  56   EXPECT_EQ(1, queue.Duration().InSeconds());
  57
  58   queue.Push(CreateBuffer(2));
  59   EXPECT_EQ(2, queue.Duration().InSeconds());
  60
  61   queue.Push(CreateBuffer(4));
  62   EXPECT_EQ(4, queue.Duration().InSeconds());
  63
  64   queue.Pop();
  65   EXPECT_EQ(3, queue.Duration().InSeconds());
  66
  67   queue.Pop();
  68   EXPECT_EQ(2, queue.Duration().InSeconds());
  69
  70   queue.Pop();
  71   EXPECT_EQ(0, queue.Duration().InSeconds());
  72
  73   queue.Pop();
  74   EXPECT_EQ(0, queue.Duration().InSeconds());
  75 }
  76
  77 TEST(DecoderBufferQueueTest, Duration_OutOfOrder) {
  78   DecoderBufferQueue queue;
  79   queue.Push(CreateBuffer(10));
  80   queue.Push(CreateBuffer(12));
  81   EXPECT_EQ(2, queue.Duration().InSeconds());
  82
  83   // Out of order: duration shouldn't change.
  84   queue.Push(CreateBuffer(8));
  85   EXPECT_EQ(2, queue.Duration().InSeconds());
  86
  87   // Removing first buffer should leave the second buffer as the only buffer
  88   // included in the duration calculation.
  89   queue.Pop();
  90   EXPECT_EQ(0, queue.Duration().InSeconds());
  91
  92   // Removing second buffer leaves the out-of-order buffer. It shouldn't be
  93   // included in duration calculations.
  94   queue.Pop();
  95   EXPECT_EQ(0, queue.Duration().InSeconds());
  96
  97   // Push a still-too-early buffer. It shouldn't be included in duration
  98   // calculations.
  99   queue.Push(CreateBuffer(11));
 100   EXPECT_EQ(0, queue.Duration().InSeconds());
 101
 102   // Push a buffer that's after the earliest valid time. It's a singular valid
 103   // buffer so duration is still zero.
 104   queue.Push(CreateBuffer(14));
 105   EXPECT_EQ(0, queue.Duration().InSeconds());
 106
 107   // Push a second valid buffer. We should now have a duration.
 108   queue.Push(CreateBuffer(17));
 109   EXPECT_EQ(3, queue.Duration().InSeconds());
 110 }
 111
 112 TEST(DecoderBufferQueueTest, Duration_NoTimestamp) {
 113   // Buffers with no timestamp don't affect duration.
 114   DecoderBufferQueue queue;
 115   queue.Push(CreateBuffer(0));
 116   queue.Push(CreateBuffer(4));
 117   EXPECT_EQ(4, queue.Duration().InSeconds());
 118
 119   queue.Push(CreateBuffer(-1));
 120   EXPECT_EQ(4, queue.Duration().InSeconds());
 121
 122   queue.Push(CreateBuffer(6));
 123   EXPECT_EQ(6, queue.Duration().InSeconds());
 124
 125   queue.Pop();
 126   EXPECT_EQ(2, queue.Duration().InSeconds());
 127
 128   queue.Pop();
 129   EXPECT_EQ(0, queue.Duration().InSeconds());
 130
 131   queue.Pop();
 132   EXPECT_EQ(0, queue.Duration().InSeconds());
 133
 134   queue.Pop();
 135   EXPECT_EQ(0, queue.Duration().InSeconds());
 136 }
 137
 138 }  // namespace media