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122 lines
6.4 KiB
C
122 lines
6.4 KiB
C
/* Dalvik Virtual Machine helper functions
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*
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* Copyright (C) 2012, Collabora Ltd.
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* Author: Sebastian Dröge <sebastian.droege@collabora.co.uk>
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* Copyright (C) 2012, Cisco Systems, Inc.
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* Author: Youness Alaoui <youness.alaoui@collabora.co.uk>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation
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* version 2.1 of the License.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifndef __GST_DVM_H__
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#define __GST_DVM_H__
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#include <gst/gst.h>
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#include <jni.h>
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#define GST_DVM_GET_CLASS(k, name) { \
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jclass tmp; \
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\
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tmp = (*env)->FindClass (env, name); \
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if (!tmp) { \
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(*env)->ExceptionClear (env); \
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GST_ERROR ("Failed to get class %s", name); \
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return FALSE; \
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} \
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\
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k.klass = (*env)->NewGlobalRef (env, tmp); \
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if (!k.klass) { \
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(*env)->ExceptionClear (env); \
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(*env)->DeleteLocalRef (env, tmp); \
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GST_ERROR ("Failed to get %s class global reference", name); \
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return FALSE; \
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} \
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(*env)->DeleteLocalRef (env, tmp); \
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}
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#define GST_DVM_GET_STATIC_METHOD(k, method, signature) \
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k.method = (*env)->GetStaticMethodID (env, k.klass, #method, \
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signature); \
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if (!k.method) { \
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(*env)->ExceptionClear (env); \
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GST_ERROR ("Failed to get static method %s for %s", #method, #k); \
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return FALSE; \
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}
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#define GST_DVM_GET_METHOD(k, method, signature) \
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k.method = (*env)->GetMethodID (env, k.klass, #method, signature); \
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if (!k.method) { \
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(*env)->ExceptionClear (env); \
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GST_ERROR ("Failed to get method %s for %s", #method, #k); \
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return FALSE; \
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}
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#define GST_DVM_GET_CONSTRUCTOR(k, field, signature) \
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k.field = (*env)->GetMethodID (env, k.klass, "<init>", signature); \
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if (!k.field) { \
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(*env)->ExceptionClear (env); \
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GST_ERROR ("Failed to get constructor %s for %s", #field, #k); \
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return FALSE; \
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}
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#define GST_DVM_GET_FIELD(k, field, signature) \
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k.field = (*env)->GetFieldID (env, k.klass, #field, signature); \
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if (!k.field) { \
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(*env)->ExceptionClear (env); \
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GST_ERROR ("Failed to get field %s for %s", #field, #k); \
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return FALSE; \
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}
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#define GST_DVM_GET_CONSTANT(k, field, type, signature) { \
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jfieldID id; \
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\
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id = (*env)->GetStaticFieldID (env, k.klass, #field, signature); \
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if (!id) { \
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(*env)->ExceptionClear (env); \
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GST_ERROR ("Failed to get static field %s for %s", #field, #k); \
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return FALSE; \
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} \
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k.field = (*env)->GetStatic##type##Field (env, k.klass, id); \
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if ((*env)->ExceptionCheck (env)) { \
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(*env)->ExceptionClear (env); \
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GST_ERROR ("Failed to get " #type " constant %s", #field); \
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return FALSE; \
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} \
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}
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#define GST_DVM_STATIC_CALL(error_statement, type, k, method, ...) \
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(*env)->CallStatic##type##Method (env, k.klass, k.method, ## __VA_ARGS__); \
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if ((*env)->ExceptionCheck (env)) { \
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GST_ERROR ("Failed to call Java method"); \
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(*env)->ExceptionDescribe (env); \
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(*env)->ExceptionClear (env); \
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error_statement; \
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}
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#define GST_DVM_CALL(error_statement, obj, type, k, method, ...) \
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(*env)->Call##type##Method (env, obj, k.method, ## __VA_ARGS__); \
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if ((*env)->ExceptionCheck (env)) { \
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GST_ERROR ("Failed to call Java method"); \
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(*env)->ExceptionDescribe (env); \
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(*env)->ExceptionClear (env); \
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error_statement; \
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}
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JNIEnv *gst_dvm_get_env (void);
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gboolean gst_dvm_init (void);
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#endif /* __GST_DVM_H__ */
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