Add FLAC audio codec support

media/filters/ffmpeg_demuxer_unittest.cc

 // Copyright (c) 2012 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 <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
 #include <deque>
 #include <string>
@@ skipping 1378 matching lines @@
   EXPECT_EQ(video_track.language(), "");
 
   const MediaTrack& audio_track = *(media_tracks_->tracks()[1]);
   EXPECT_EQ(audio_track.type(), MediaTrack::Audio);
   EXPECT_EQ(audio_track.bytestream_track_id(), 2);
   EXPECT_EQ(audio_track.kind(), "main");
   EXPECT_EQ(audio_track.label(), "");
   EXPECT_EQ(audio_track.language(), "");
 }
 
+TEST_F(FFmpegDemuxerTest, Read_Flac) {
+  CreateDemuxer("sfx.flac");
+  InitializeDemuxer();
+
+  // Video stream should not be present.
+  EXPECT_EQ(nullptr, demuxer_->GetStream(DemuxerStream::VIDEO));
+
+  // Audio stream should be present.
+  DemuxerStream* stream = demuxer_->GetStream(DemuxerStream::AUDIO);
+  ASSERT_TRUE(stream);
+  EXPECT_EQ(DemuxerStream::AUDIO, stream->type());
+
+  const AudioDecoderConfig& audio_config = stream->audio_decoder_config();
+  EXPECT_EQ(kCodecFLAC, audio_config.codec());
+  EXPECT_EQ(32, audio_config.bits_per_channel());
+  EXPECT_EQ(CHANNEL_LAYOUT_MONO, audio_config.channel_layout());
+  EXPECT_EQ(44100, audio_config.samples_per_second());
+  EXPECT_EQ(kSampleFormatS32, audio_config.sample_format());
+}
+
 }  // namespace media