Move media::AudioCodec to its own source file

media/ffmpeg/ffmpeg_common.h

 // 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.
 
 #ifndef MEDIA_FFMPEG_FFMPEG_COMMON_H_
 #define MEDIA_FFMPEG_FFMPEG_COMMON_H_
 
 #include <stdint.h>
 
 // Used for FFmpeg error codes.
 #include <cerrno>
 
 #include "base/compiler_specific.h"
 #include "base/time/time.h"
-#include "media/base/audio_decoder_config.h"
+#include "media/base/audio_codecs.h"
 #include "media/base/channel_layout.h"
 #include "media/base/media_export.h"
+#include "media/base/sample_format.h"
 #include "media/base/video_codecs.h"
 #include "media/base/video_frame.h"
 #include "media/ffmpeg/ffmpeg_deleters.h"
 
 // Include FFmpeg header files.
 extern "C" {
 // Disable deprecated features which result in spammy compile warnings.  This
 // list of defines must mirror those in the 'defines' section of BUILD.gn file &
 // ffmpeg.gyp file or the headers below will generate different structures!
 #define FF_API_CONVERGENCE_DURATION 0
@@ skipping 86 matching lines @@
     const AVCodecContext* codec_context,
     bool is_encrypted,
     AudioDecoderConfig* config);
 
 // Converts FFmpeg's channel layout to chrome's ChannelLayout.  |channels| can
 // be used when FFmpeg's channel layout is not informative in order to make a
 // good guess about the plausible channel layout based on number of channels.
 MEDIA_EXPORT ChannelLayout ChannelLayoutToChromeChannelLayout(int64_t layout,
                                                               int channels);
 
+MEDIA_EXPORT AVCodecID AudioCodecToCodecID(AudioCodec audio_codec,
+                                           SampleFormat sample_format);
 MEDIA_EXPORT AVCodecID VideoCodecToCodecID(VideoCodec video_codec);
 
 // Converts FFmpeg's audio sample format to Chrome's SampleFormat.
 MEDIA_EXPORT SampleFormat
 AVSampleFormatToSampleFormat(AVSampleFormat sample_format, AVCodecID codec_id);
 
 // Converts FFmpeg's pixel formats to its corresponding supported video format.
 MEDIA_EXPORT VideoPixelFormat
 AVPixelFormatToVideoPixelFormat(AVPixelFormat pixel_format);
 
 // Converts video formats to its corresponding FFmpeg's pixel formats.
 AVPixelFormat VideoPixelFormatToAVPixelFormat(VideoPixelFormat video_format);
 
 ColorSpace AVColorSpaceToColorSpace(AVColorSpace color_space,
                                     AVColorRange color_range);
 
 // Convert FFmpeg UTC representation (YYYY-MM-DD HH:MM:SS) to base::Time.
 // Returns true and sets |*out| if |date_utc| contains a valid
 // date string. Otherwise returns fals and timeline_offset is unmodified.
 MEDIA_EXPORT bool FFmpegUTCDateToTime(const char* date_utc, base::Time* out);
 
 // Returns a 32-bit hash for the given codec name.  See the VerifyUmaCodecHashes
 // unit test for more information and code for generating the histogram XML.
 MEDIA_EXPORT int32_t HashCodecName(const char* codec_name);
 
 }  // namespace media
 
 #endif  // MEDIA_FFMPEG_FFMPEG_COMMON_H_