[FFmpeg-devel] [PATCH 2/7] avutil: add av_jni_{get, set}_android_app_ctx helper

[Matthieu Bouron <matthieu.bouron@gmail.com>]

This will allow users to pass the Android ApplicationContext which is mandatory
to retrieve the ContentResolver responsible to resolve/open Android content-uri.
---
 libavutil/jni.c | 28 ++++++++++++++++++++++++++++
 libavutil/jni.h | 17 +++++++++++++++++
 2 files changed, 45 insertions(+)

diff --git a/libavutil/jni.c b/libavutil/jni.c
index 541747cb20..d6f96717b0 100644
--- a/libavutil/jni.c
+++ b/libavutil/jni.c
@@ -34,6 +34,7 @@
 #include "libavutil/jni.h"
 
 static void *java_vm;
+static void *android_app_ctx;
 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
 
 int av_jni_set_jvm(void *vm, void *log_ctx)
@@ -63,6 +64,24 @@ void *av_jni_get_jvm(void *log_ctx)
     return vm;
 }
 
+void av_jni_set_android_app_ctx(void *app_ctx)
+{
+    pthread_mutex_lock(&lock);
+    android_app_ctx = app_ctx;
+    pthread_mutex_unlock(&lock);
+}
+
+void *av_jni_get_android_app_ctx(void)
+{
+    void *ctx;
+
+    pthread_mutex_lock(&lock);
+    ctx = android_app_ctx;
+    pthread_mutex_unlock(&lock);
+
+    return ctx;
+}
+
 #else
 
 int av_jni_set_java_vm(void *vm, void *log_ctx)
@@ -75,4 +94,13 @@ void *av_jni_get_java_vm(void *log_ctx)
     return NULL;
 }
 
+void av_jni_set_android_app_ctx(void *app_ctx)
+{
+}
+
+void *av_jni_get_android_app_ctx(void)
+{
+    return NULL;
+}
+
 #endif
diff --git a/libavutil/jni.h b/libavutil/jni.h
index 700960dbb8..630f4074a1 100644
--- a/libavutil/jni.h
+++ b/libavutil/jni.h
@@ -43,4 +43,21 @@ int av_jni_set_jvm(void *vm, void *log_ctx);
  */
 void *av_jni_get_jvm(void *log_ctx);
 
+/*
+ * Set the Android application context which will be used to retrieve the Android
+ * content resolver to resolve content uris.
+ *
+ * @param app_ctx global JNI reference to the Android application context
+ */
+void av_jni_set_android_app_ctx(void *app_ctx);
+
+/*
+ * Get the Android application context that has been set with
+ * av_jni_set_android_app_ctx.
+ *
+ * @return a pointer the the Android application context
+ */
+void *av_jni_get_android_app_ctx(void);
+
+
 #endif /* AVUTIL_JNI_H */
-- 
2.43.1

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