Enable media.dll / libmedia.so.

media/ffmpeg/ffmpeg_common.h

 // Copyright (c) 2011 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_
 
 // Used for FFmpeg error codes.
 #include <cerrno>
 
 #include "base/compiler_specific.h"
 #include "base/memory/singleton.h"
 #include "base/time.h"
 #include "media/base/channel_layout.h"
+#include "media/base/media_export.h"
 #include "media/video/video_decode_engine.h"
 
 // Include FFmpeg header files.
 extern "C" {
 // Temporarily disable possible loss of data warning.
 // TODO(scherkus): fix and upstream the compiler warnings.
 MSVC_PUSH_DISABLE_WARNING(4244);
 #include <libavcodec/avcodec.h>
 #include <libavformat/avformat.h>
 #include <libavformat/avio.h>
@@ skipping 22 matching lines @@
     AVPacket* packet = static_cast<AVPacket*>(x);
     av_free_packet(packet);
     delete packet;
   }
 };
 
 // Converts an int64 timestamp in |time_base| units to a base::TimeDelta.
 // For example if |timestamp| equals 11025 and |time_base| equals {1, 44100}
 // then the return value will be a base::TimeDelta for 0.25 seconds since that
 // is how much time 11025/44100ths of a second represents.
-base::TimeDelta ConvertFromTimeBase(const AVRational& time_base,
-                                    int64 timestamp);
+MEDIA_EXPORT base::TimeDelta ConvertFromTimeBase(const AVRational& time_base,
+                                                 int64 timestamp);
 
 // Converts a base::TimeDelta into an int64 timestamp in |time_base| units.
 // For example if |timestamp| is 0.5 seconds and |time_base| is {1, 44100}, then
 // the return value will be 22050 since that is how many 1/44100ths of a second
 // represent 0.5 seconds.
-int64 ConvertToTimeBase(const AVRational& time_base,
-                        const base::TimeDelta& timestamp);
+MEDIA_EXPORT int64 ConvertToTimeBase(const AVRational& time_base,
+                                     const base::TimeDelta& timestamp);
 
 VideoCodec CodecIDToVideoCodec(CodecID codec_id);
 CodecID VideoCodecToCodecID(VideoCodec video_codec);
 
 // 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.
 ChannelLayout ChannelLayoutToChromeChannelLayout(int64_t layout,
                                                  int channels);
 
 // Calculates duration of one frame in the |stream| based on its frame rate.
 base::TimeDelta GetFrameDuration(AVStream* stream);
 
 // Get the timestamp of the next seek point after |timestamp|.
 // Returns true if a valid seek point was found after |timestamp| and
 // |seek_time| was set. Returns false if a seek point could not be
 // found or the parameters are invalid.
-bool GetSeekTimeAfter(AVStream* stream,
-                      const base::TimeDelta& timestamp,
-                      base::TimeDelta* seek_time);
+MEDIA_EXPORT bool GetSeekTimeAfter(AVStream* stream,
+                                   const base::TimeDelta& timestamp,
+                                   base::TimeDelta* seek_time);
 
 // Get the number of bytes required to play the stream over a specified
 // time range. This is an estimate based on the available index data.
 // Returns true if input time range was valid and |bytes|, |range_start|,
 // and |range_end|, were set. Returns false if the range was invalid or we don't
 // have enough index data to make an estimate.
 //
 // |bytes| - The number of bytes in the stream for the specified range.
 // |range_start| - The start time for the range covered by |bytes|. This
 //                 may be different than |start_time| if the index doesn't
 //                 have data for that exact time. |range_start| <= |start_time|
 // |range_end| - The end time for the range covered by |bytes|. This may be
 //               different than |end_time| if the index doesn't have data for
 //               that exact time. |range_end| >= |end_time|
-bool GetStreamByteCountOverRange(AVStream* stream,
-                                 const base::TimeDelta& start_time,
-                                 const base::TimeDelta& end_time,
-                                 int64* bytes,
-                                 base::TimeDelta* range_start,
-                                 base::TimeDelta* range_end);
+MEDIA_EXPORT bool GetStreamByteCountOverRange(AVStream* stream,
+                                              const base::TimeDelta& start_time,
+                                              const base::TimeDelta& end_time,
+                                              int64* bytes,
+                                              base::TimeDelta* range_start,
+                                              base::TimeDelta* range_end);
 
 // Calculates the width and height of the video surface using the video's
 // encoded dimensions and sample_aspect_ratio.
 int GetSurfaceHeight(AVStream* stream);
 int GetSurfaceWidth(AVStream* stream);
 
 // Closes & destroys all AVStreams in the context and then closes &
 // destroys the AVFormatContext.
 void DestroyAVFormatContext(AVFormatContext* format_context);
 
 }  // namespace media
 
 #endif  // MEDIA_FFMPEG_FFMPEG_COMMON_H_