media/formats/mp2t/es_parser_mpeg1audio_unittest.cc

   1 // Copyright 2014 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 <vector>
   6
   7 #include "base/bind.h"
   8 #include "base/logging.h"
   9 #include "base/time/time.h"
  10 #include "media/base/media_log.h"
  11 #include "media/base/stream_parser_buffer.h"
  12 #include "media/formats/mp2t/es_parser_mpeg1audio.h"
  13 #include "media/formats/mp2t/es_parser_test_base.h"
  14 #include "testing/gtest/include/gtest/gtest.h"
  15
  16 namespace media {
  17 class AudioDecoderConfig;
  18
  19 namespace mp2t {
  20
  21 class EsParserMpeg1AudioTest : public EsParserTestBase,
  22                                public testing::Test {
  23  public:
  24   EsParserMpeg1AudioTest();
  25
  26  protected:
  27   bool Process(const std::vector<Packet>& pes_packets, bool force_timing);
  28
  29  private:
  30   DISALLOW_COPY_AND_ASSIGN(EsParserMpeg1AudioTest);
  31 };
  32
  33 EsParserMpeg1AudioTest::EsParserMpeg1AudioTest() {
  34 }
  35
  36 bool EsParserMpeg1AudioTest::Process(
  37     const std::vector<Packet>& pes_packets,
  38     bool force_timing) {
  39   EsParserMpeg1Audio es_parser(
  40       base::Bind(&EsParserMpeg1AudioTest::NewAudioConfig,
  41                  base::Unretained(this)),
  42       base::Bind(&EsParserMpeg1AudioTest::EmitBuffer, base::Unretained(this)),
  43       new MediaLog());
  44   return ProcessPesPackets(&es_parser, pes_packets, force_timing);
  45 }
  46
  47 TEST_F(EsParserMpeg1AudioTest, SinglePts) {
  48   LoadStream("sfx.mp3");
  49
  50   std::vector<Packet> pes_packets = GenerateFixedSizePesPacket(512);
  51   pes_packets.front().pts = base::TimeDelta::FromSeconds(10);
  52
  53   // Note: there is no parsing of metadata as part of Mpeg2 TS,
  54   // so the tag starting at 0x80d with 0x54 0x41 0x47 (ascii for "TAG")
  55   // is not a valid Mpeg1 audio frame header. This makes the previous frame
  56   // invalid since there is no start code following the previous frame.
  57   // So instead of the 13 Mpeg1 audio frames, only 12 are considered valid.
  58   // Offset of frames in the file:
  59   // {0x20,  0x1c1, 0x277, 0x2f9, 0x3fd, 0x47f, 0x501, 0x583,
  60   //  0x605, 0x687, 0x73d, 0x7a5, 0x80d}
  61   // TODO(damienv): find a file that would be more relevant for Mpeg1 audio
  62   // as part of Mpeg2 TS.
  63   EXPECT_TRUE(Process(pes_packets, false));
  64   EXPECT_EQ(1u, config_count_);
  65   EXPECT_EQ(12u, buffer_count_);
  66 }
  67
  68 TEST_F(EsParserMpeg1AudioTest, NoTimingInfo) {
  69   LoadStream("sfx.mp3");
  70   std::vector<Packet> pes_packets = GenerateFixedSizePesPacket(512);
  71
  72   // Process should succeed even without timing info, we should just skip the
  73   // audio frames without timing info, but still should be able to parse and
  74   // play the stream after that.
  75   EXPECT_TRUE(Process(pes_packets, false));
  76   EXPECT_EQ(1u, config_count_);
  77   EXPECT_EQ(0u, buffer_count_);
  78 }
  79
  80 }  // namespace mp2t
  81 }  // namespace media