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/*
* JNI public API functions
*
* Copyright (c) 2015-2016 Matthieu Bouron <matthieu.bouron stupeflix.com>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include <stdlib.h>
#include "libavutil/error.h"
#include "jni.h"
#if CONFIG_JNI
#include <jni.h>
#include <pthread.h>
#include "libavutil/log.h"
#include "ffjni.h"
static void *java_vm;
static void *android_app_ctx;
static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
int av_jni_set_java_vm(void *vm, void *log_ctx)
{
int ret = 0;
pthread_mutex_lock(&lock);
if (java_vm == NULL) {
java_vm = vm;
} else if (java_vm != vm) {
ret = AVERROR(EINVAL);
av_log(log_ctx, AV_LOG_ERROR, "A Java virtual machine has already been set");
}
pthread_mutex_unlock(&lock);
return ret;
}
void *av_jni_get_java_vm(void *log_ctx)
{
void *vm;
pthread_mutex_lock(&lock);
vm = java_vm;
pthread_mutex_unlock(&lock);
return vm;
}
#else
int av_jni_set_java_vm(void *vm, void *log_ctx)
{
return AVERROR(ENOSYS);
}
void *av_jni_get_java_vm(void *log_ctx)
{
return NULL;
}
#endif
#if defined(__ANDROID__)
int av_jni_set_android_app_ctx(void *app_ctx, void *log_ctx)
{
#if CONFIG_JNI
JNIEnv *env = ff_jni_get_env(log_ctx);
if (!env)
return AVERROR(EINVAL);
jobjectRefType type = (*env)->GetObjectRefType(env, app_ctx);
if (type != JNIGlobalRefType) {
av_log(log_ctx, AV_LOG_ERROR, "Application context must be passed as a global reference");
return AVERROR(EINVAL);
}
pthread_mutex_lock(&lock);
android_app_ctx = app_ctx;
pthread_mutex_unlock(&lock);
return 0;
#else
return AVERROR(ENOSYS);
#endif
}
void *av_jni_get_android_app_ctx(void)
{
#if CONFIG_JNI
void *ctx;
pthread_mutex_lock(&lock);
ctx = android_app_ctx;
pthread_mutex_unlock(&lock);
return ctx;
#else
return NULL;
#endif
}
#endif
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