media/midi/usb_midi_export.h

   1 // Copyright 2015 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 #ifndef MEDIA_MIDI_USB_MIDI_EXPORT_H_
   6 #define MEDIA_MIDI_USB_MIDI_EXPORT_H_
   7
   8 // These files can be included as part of the midi component using the
   9 // MIDI_IMPLEMENTATION define (where we want to export in the component build),
  10 // or in the unit tests (where we never want to export/import, even in
  11 // component mode). The EXPORT_USB_MIDI define controls this.
  12 #if defined(COMPONENT_BUILD) && defined(EXPORT_USB_MIDI)
  13 #if defined(WIN32)
  14
  15 #if defined(MIDI_IMPLEMENTATION)
  16 #define USB_MIDI_EXPORT __declspec(dllexport)
  17 #else
  18 #define USB_MIDI_EXPORT __declspec(dllimport)
  19 #endif  // defined(MIDI_IMPLEMENTATION)
  20
  21 #else  // defined(WIN32)
  22 #if defined(MIDI_IMPLEMENTATION)
  23 #define USB_MIDI_EXPORT __attribute__((visibility("default")))
  24 #else
  25 #define USB_MIDI_EXPORT
  26 #endif
  27 #endif
  28
  29 #else  // defined(COMPONENT_BUILD)
  30 #define USB_MIDI_EXPORT
  31 #endif
  32
  33 #endif  // MEDIA_MIDI_USB_MIDI_EXPORT_H_