From 4be543a4b2d573cc114708bbea6a79ceb57f0ecb Mon Sep 17 00:00:00 2001
From: Chris Cannam <cannam@all-day-breakfast.com>
Date: Tue, 9 Feb 2021 10:13:45 +0000
Subject: [PATCH] Export DLL symbols

---
 rubberband/RubberBandStretcher.h | 10 +++++-
 rubberband/rubberband-c.h        | 59 ++++++++++++++++++--------------
 2 files changed, 43 insertions(+), 26 deletions(-)

diff --git a/rubberband/RubberBandStretcher.h b/rubberband/RubberBandStretcher.h
index ad16ca3..1bc0829 100644
--- a/rubberband/RubberBandStretcher.h
+++ b/rubberband/RubberBandStretcher.h
@@ -28,6 +28,13 @@
 #define RUBBERBAND_API_MAJOR_VERSION 2
 #define RUBBERBAND_API_MINOR_VERSION 6
 
+#undef RUBBERBAND_DLLEXPORT
+#ifdef _MSC_VER
+#define RUBBERBAND_DLLEXPORT __declspec(dllexport)
+#else
+#define RUBBERBAND_DLLEXPORT
+#endif
+
 #include <vector>
 #include <map>
 #include <cstddef>
@@ -60,7 +67,8 @@
 namespace RubberBand
 {
 
-class RubberBandStretcher
+class RUBBERBAND_DLLEXPORT
+RubberBandStretcher
 {
 public:
     /**
diff --git a/rubberband/rubberband-c.h b/rubberband/rubberband-c.h
index 41bcfac..2a5e56d 100644
--- a/rubberband/rubberband-c.h
+++ b/rubberband/rubberband-c.h
@@ -32,6 +32,13 @@ extern "C" {
 #define RUBBERBAND_API_MAJOR_VERSION 2
 #define RUBBERBAND_API_MINOR_VERSION 6
 
+#undef RB_EXTERN
+#ifdef _MSC_VER
+#define RB_EXTERN extern __declspec(dllexport)
+#else
+#define RB_EXTERN extern
+#endif
+
 /**
  * This is a C-linkage interface to the Rubber Band time stretcher.
  * 
@@ -91,52 +98,54 @@ typedef int RubberBandOptions;
 struct RubberBandState_;
 typedef struct RubberBandState_ *RubberBandState;
 
-extern RubberBandState rubberband_new(unsigned int sampleRate,
+RB_EXTERN RubberBandState rubberband_new(unsigned int sampleRate,
                                       unsigned int channels,
                                       RubberBandOptions options,
                                       double initialTimeRatio,
                                       double initialPitchScale);
 
-extern void rubberband_delete(RubberBandState);
+RB_EXTERN void rubberband_delete(RubberBandState);
 
-extern void rubberband_reset(RubberBandState);
+RB_EXTERN void rubberband_reset(RubberBandState);
 
-extern void rubberband_set_time_ratio(RubberBandState, double ratio);
-extern void rubberband_set_pitch_scale(RubberBandState, double scale);
+RB_EXTERN void rubberband_set_time_ratio(RubberBandState, double ratio);
+RB_EXTERN void rubberband_set_pitch_scale(RubberBandState, double scale);
 
-extern double rubberband_get_time_ratio(const RubberBandState);
-extern double rubberband_get_pitch_scale(const RubberBandState);
+RB_EXTERN double rubberband_get_time_ratio(const RubberBandState);
+RB_EXTERN double rubberband_get_pitch_scale(const RubberBandState);
 
-extern unsigned int rubberband_get_latency(const RubberBandState);
+RB_EXTERN unsigned int rubberband_get_latency(const RubberBandState);
 
-extern void rubberband_set_transients_option(RubberBandState, RubberBandOptions options);
-extern void rubberband_set_detector_option(RubberBandState, RubberBandOptions options);
-extern void rubberband_set_phase_option(RubberBandState, RubberBandOptions options);
-extern void rubberband_set_formant_option(RubberBandState, RubberBandOptions options);
-extern void rubberband_set_pitch_option(RubberBandState, RubberBandOptions options);
+RB_EXTERN void rubberband_set_transients_option(RubberBandState, RubberBandOptions options);
+RB_EXTERN void rubberband_set_detector_option(RubberBandState, RubberBandOptions options);
+RB_EXTERN void rubberband_set_phase_option(RubberBandState, RubberBandOptions options);
+RB_EXTERN void rubberband_set_formant_option(RubberBandState, RubberBandOptions options);
+RB_EXTERN void rubberband_set_pitch_option(RubberBandState, RubberBandOptions options);
 
-extern void rubberband_set_expected_input_duration(RubberBandState, unsigned int samples);
+RB_EXTERN void rubberband_set_expected_input_duration(RubberBandState, unsigned int samples);
 
-extern unsigned int rubberband_get_samples_required(const RubberBandState);
+RB_EXTERN unsigned int rubberband_get_samples_required(const RubberBandState);
 
-extern void rubberband_set_max_process_size(RubberBandState, unsigned int samples);
-extern void rubberband_set_key_frame_map(RubberBandState, unsigned int keyframecount, unsigned int *from, unsigned int *to);
+RB_EXTERN void rubberband_set_max_process_size(RubberBandState, unsigned int samples);
+RB_EXTERN void rubberband_set_key_frame_map(RubberBandState, unsigned int keyframecount, unsigned int *from, unsigned int *to);
 
-extern void rubberband_study(RubberBandState, const float *const *input, unsigned int samples, int final);
-extern void rubberband_process(RubberBandState, const float *const *input, unsigned int samples, int final);
+RB_EXTERN void rubberband_study(RubberBandState, const float *const *input, unsigned int samples, int final);
+RB_EXTERN void rubberband_process(RubberBandState, const float *const *input, unsigned int samples, int final);
 
-extern int rubberband_available(const RubberBandState);
-extern unsigned int rubberband_retrieve(const RubberBandState, float *const *output, unsigned int samples);
+RB_EXTERN int rubberband_available(const RubberBandState);
+RB_EXTERN unsigned int rubberband_retrieve(const RubberBandState, float *const *output, unsigned int samples);
 
-extern unsigned int rubberband_get_channel_count(const RubberBandState);
+RB_EXTERN unsigned int rubberband_get_channel_count(const RubberBandState);
 
-extern void rubberband_calculate_stretch(RubberBandState);
+RB_EXTERN void rubberband_calculate_stretch(RubberBandState);
 
-extern void rubberband_set_debug_level(RubberBandState, int level);
-extern void rubberband_set_default_debug_level(int level);
+RB_EXTERN void rubberband_set_debug_level(RubberBandState, int level);
+RB_EXTERN void rubberband_set_default_debug_level(int level);
 
 #ifdef __cplusplus
 }
 #endif
 
+#undef RB_EXTERN
+
 #endif