Support MPEG1 audio in the MPEG2-TS stream parser.

media/formats/mp2t/es_parser_mpeg1audio_unittest.cc

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <vector>
+
+#include "base/bind.h"
+#include "base/logging.h"
+#include "base/time/time.h"
+#include "media/base/buffers.h"
+#include "media/base/media_log.h"
+#include "media/base/stream_parser_buffer.h"
+#include "media/formats/mp2t/es_parser_mpeg1audio.h"
+#include "media/formats/mp2t/es_parser_test_base.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace media {
+class AudioDecoderConfig;
+
+namespace mp2t {
+
+class EsParserMpeg1AudioTest : public EsParserTestBase,
+                               public testing::Test {
+ public:
+  EsParserMpeg1AudioTest();
+  virtual ~EsParserMpeg1AudioTest() {}
+
+ protected:
+  bool Process(const std::vector<Packet>& pes_packets, bool force_timing);
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(EsParserMpeg1AudioTest);
+};
+
+EsParserMpeg1AudioTest::EsParserMpeg1AudioTest() {
+}
+
+bool EsParserMpeg1AudioTest::Process(
+    const std::vector<Packet>& pes_packets,
+    bool force_timing) {
+  EsParserMpeg1Audio es_parser(
+      base::Bind(&EsParserMpeg1AudioTest::NewAudioConfig,
+                 base::Unretained(this)),
+      base::Bind(&EsParserMpeg1AudioTest::EmitBuffer,
+                 base::Unretained(this)),
+      LogCB());
+  return ProcessPesPackets(&es_parser, pes_packets, force_timing);
+}
+
+TEST_F(EsParserMpeg1AudioTest, SinglePts) {
+  LoadStream("sfx.mp3");
+
+  std::vector<Packet> pes_packets = GenerateFixedSizePesPacket(512);
+  pes_packets.front().pts = base::TimeDelta::FromSeconds(10);
+
+  // Note: there is no parsing of metadata as part of Mpeg2 TS,
+  // so the tag starting at 0x80d with 0x54 0x41 0x47 (ascii for "TAG")
+  // is not a valid Mpeg1 audio frame header. This makes the previous frame
+  // invalid since there is no start code following the previous frame.
+  // So instead of the 13 Mpeg1 audio frames, only 12 are considered valid.
+  // Offset of frames in the file:
+  // {0x20,  0x1c1, 0x277, 0x2f9, 0x3fd, 0x47f, 0x501, 0x583,
+  //  0x605, 0x687, 0x73d, 0x7a5, 0x80d}
+  // TODO(damienv): find a file that would be more relevant for Mpeg1 audio
+  // as part of Mpeg2 TS.
+  EXPECT_TRUE(Process(pes_packets, false));
+  EXPECT_EQ(1u, config_count_);
+  EXPECT_EQ(12u, buffer_count_);
+}
+
+}  // namespace mp2t
+}  // namespace media