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