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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2025-01-11 09:55:36 +00:00
androidmedia: Add more JNI helper functions
This commit is contained in:
Matthieu Bouron
Sebastian Dröge
parent
be2378a071
commit
66f315d6a6
3 changed files with 312 additions and 1 deletions
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@ -1569,7 +1569,7 @@ scan_codecs (GstPlugin * plugin)
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goto done;
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}
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GST_LOG ("Found %d available codecs", codec_count);
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GST_INFO ("Found %d available codecs", codec_count);
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for (i = 0; i < codec_count; i++) {
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GstAmcCodecInfo *gst_codec_info;
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@ -42,6 +42,184 @@ static gboolean initialized = FALSE;
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static gboolean started_java_vm = FALSE;
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static pthread_key_t current_jni_env;
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jclass
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gst_amc_jni_get_class (JNIEnv * env, const gchar * name)
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{
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jclass tmp, ret = NULL;
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GST_DEBUG ("Retrieving Java class %s", name);
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tmp = (*env)->FindClass (env, name);
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if (!tmp) {
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ret = FALSE;
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(*env)->ExceptionClear (env);
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GST_ERROR ("Failed to get %s class", name);
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goto done;
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}
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ret = (*env)->NewGlobalRef (env, tmp);
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if (!ret) {
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(*env)->ExceptionClear (env);
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GST_ERROR ("Failed to get %s class global reference", name);
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}
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done:
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if (tmp)
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(*env)->DeleteLocalRef (env, tmp);
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tmp = NULL;
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return ret;
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}
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jmethodID
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gst_amc_jni_get_method (JNIEnv * env, jclass klass, const gchar * name,
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const gchar * signature)
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{
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jmethodID ret;
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ret = (*env)->GetMethodID (env, klass, name, signature);
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if (!ret) {
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(*env)->ExceptionClear (env);
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GST_ERROR ("Failed to get method ID %s", name);
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}
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return ret;
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}
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jmethodID
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gst_amc_jni_get_static_method (JNIEnv * env, jclass klass, const gchar * name,
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const gchar * signature)
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{
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jmethodID ret;
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ret = (*env)->GetStaticMethodID (env, klass, name, signature);
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if (!ret) {
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(*env)->ExceptionClear (env);
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GST_ERROR ("Failed to get static method id %s", name);
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}
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return ret;
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}
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jfieldID
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gst_amc_jni_get_field_id (JNIEnv * env, jclass klass, const gchar * name,
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const gchar * type)
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{
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jfieldID ret;
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ret = (*env)->GetFieldID (env, klass, name, type);
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if (!ret) {
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(*env)->ExceptionClear (env);
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GST_ERROR ("Failed to get field ID %s", name);
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}
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return ret;
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}
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jobject
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gst_amc_jni_new_object (JNIEnv * env, jclass klass, jmethodID constructor, ...)
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{
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jobject tmp;
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va_list args;
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va_start (args, constructor);
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tmp = (*env)->NewObjectV (env, klass, constructor, args);
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va_end (args);
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if (!tmp) {
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(*env)->ExceptionClear (env);
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GST_ERROR ("Failed to create object");
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return NULL;
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}
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return gst_amc_jni_object_make_global (env, tmp);
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}
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jobject
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gst_amc_jni_new_object_from_static (JNIEnv * env, jclass klass,
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jmethodID method, ...)
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{
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jobject tmp;
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va_list args;
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va_start (args, method);
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tmp = (*env)->CallStaticObjectMethodV (env, klass, method, args);
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va_end (args);
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if ((*env)->ExceptionCheck (env) || !tmp) {
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(*env)->ExceptionClear (env);
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GST_ERROR ("Failed to create object from static method");
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return NULL;
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}
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return gst_amc_jni_object_make_global (env, tmp);
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}
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jobject
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gst_amc_jni_object_make_global (JNIEnv * env, jobject object)
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{
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jobject ret;
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ret = (*env)->NewGlobalRef (env, object);
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if (!ret) {
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GST_ERROR ("Failed to create global reference");
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(*env)->ExceptionClear (env);
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} else {
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gst_amc_jni_object_local_unref (env, object);
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}
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return ret;
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}
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jobject
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gst_amc_jni_object_ref (JNIEnv * env, jobject object)
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{
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jobject ret;
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ret = (*env)->NewGlobalRef (env, object);
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if (!ret) {
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GST_ERROR ("Failed to create global reference");
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(*env)->ExceptionClear (env);
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}
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return ret;
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}
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void
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gst_amc_jni_object_unref (JNIEnv * env, jobject object)
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{
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(*env)->DeleteGlobalRef (env, object);
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}
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void
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gst_amc_jni_object_local_unref (JNIEnv * env, jobject object)
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{
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(*env)->DeleteLocalRef (env, object);
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}
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jstring
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gst_amc_jni_string_from_gchar (JNIEnv * env, const gchar * string)
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{
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return (*env)->NewStringUTF (env, string);
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}
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gchar *
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gst_amc_jni_string_to_gchar (JNIEnv * env, jstring string, gboolean release)
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{
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const gchar *s = NULL;
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gchar *ret = NULL;
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s = (*env)->GetStringUTFChars (env, string, NULL);
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if (!s) {
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GST_ERROR ("Failed to convert string to UTF8");
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(*env)->ExceptionClear (env);
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return ret;
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}
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ret = g_strdup (s);
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(*env)->ReleaseStringUTFChars (env, string, s);
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if (release) {
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(*env)->DeleteLocalRef (env, string);
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}
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return ret;
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}
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/* getExceptionSummary() and getStackTrace() taken from Android's
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* platform/libnativehelper/JNIHelp.cpp
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* Modified to work with normal C strings and without C++.
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@ -482,3 +660,67 @@ gst_amc_jni_is_vm_started (void)
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{
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return started_java_vm;
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}
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#define CALL_TYPE_METHOD(_type, _name, _jname, _retval) \
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_type gst_amc_jni_call_##_name##_method (JNIEnv *env, GError ** err, jobject obj, jmethodID methodID, ...) \
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{ \
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_type ret; \
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va_list args; \
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va_start(args, methodID); \
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ret = (*env)->Call##_jname##MethodV(env, obj, methodID, args); \
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if ((*env)->ExceptionCheck (env)) { \
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gst_amc_jni_set_error (env, GST_LIBRARY_ERROR, GST_LIBRARY_ERROR_FAILED, \
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err, "Failed to call Java method"); \
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(*env)->ExceptionClear (env); \
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ret = _retval; \
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} \
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va_end(args); \
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return (_type) ret; \
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}
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CALL_TYPE_METHOD (gboolean, boolean, Boolean, FALSE)
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CALL_TYPE_METHOD (gint8, byte, Byte, G_MININT8)
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CALL_TYPE_METHOD (gshort, short, Short, G_MINSHORT)
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CALL_TYPE_METHOD (gint, int, Int, G_MININT)
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CALL_TYPE_METHOD (gchar, char, Char, 0)
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CALL_TYPE_METHOD (glong, long, Long, G_MINLONG)
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CALL_TYPE_METHOD (gfloat, float, Float, G_MINFLOAT)
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CALL_TYPE_METHOD (gdouble, double, Double, G_MINDOUBLE)
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CALL_TYPE_METHOD (jobject, object, Object, NULL)
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gboolean
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gst_amc_jni_call_void_method (JNIEnv * env, GError ** err, jobject obj,
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jmethodID methodID, ...)
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{
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gboolean ret = TRUE;
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va_list args;
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va_start (args, methodID);
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(*env)->CallVoidMethodV (env, obj, methodID, args);
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if ((*env)->ExceptionCheck (env)) {
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gst_amc_jni_set_error (env, GST_LIBRARY_ERROR, GST_LIBRARY_ERROR_FAILED,
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err, "Failed to call Java method");
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(*env)->ExceptionClear (env);
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ret = FALSE;
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}
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va_end (args);
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return ret;
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}
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#define GET_TYPE_FIELD(_type, _name, _jname, _retval) \
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_type gst_amc_jni_get_##_name##_field (JNIEnv *env, GError ** err, jobject obj, jfieldID fieldID) \
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{ \
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_type res; \
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\
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res = (*env)->Get##_jname##Field(env, obj, fieldID); \
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if ((*env)->ExceptionCheck (env)) { \
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gst_amc_jni_set_error (env, GST_LIBRARY_ERROR, GST_LIBRARY_ERROR_FAILED, \
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err, "Failed to call Java field"); \
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(*env)->ExceptionClear (env); \
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res = _retval; \
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} \
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return res; \
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}
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GET_TYPE_FIELD (gint, int, Int, G_MININT)
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GET_TYPE_FIELD (glong, long, Long, G_MINLONG)
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@ -29,6 +29,51 @@
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#include <glib.h>
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#include <gst/gst.h>
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jclass gst_amc_jni_get_class (JNIEnv * env,
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const gchar * name);
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jmethodID gst_amc_jni_get_method (JNIEnv * env,
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jclass klass,
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const gchar * name,
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const gchar * signature);
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jmethodID gst_amc_jni_get_static_method (JNIEnv * env,
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jclass klass,
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const gchar * name,
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const gchar * signature);
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jfieldID gst_amc_jni_get_field_id (JNIEnv * env,
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jclass klass,
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const gchar * name,
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const gchar * type);
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jobject gst_amc_jni_new_object (JNIEnv * env,
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jclass klass,
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jmethodID constructor, ...);
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jobject gst_amc_jni_new_object_from_static (JNIEnv * env,
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jclass klass,
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jmethodID constructor, ...);
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jobject gst_amc_jni_object_make_global (JNIEnv * env,
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jobject object);
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jobject gst_amc_jni_object_ref (JNIEnv * env,
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jobject object);
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void gst_amc_jni_object_unref (JNIEnv * env,
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jobject object);
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void gst_amc_jni_object_local_unref (JNIEnv * env,
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jobject object);
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gchar *gst_amc_jni_string_to_gchar (JNIEnv * env,
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jstring string,
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gboolean release);
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jstring gst_amc_jni_string_from_gchar (JNIEnv * env,
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const gchar * string);
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G_GNUC_PRINTF (5, 6)
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void gst_amc_jni_set_error (JNIEnv * env,
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GQuark domain,
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@ -42,4 +87,28 @@ gboolean gst_amc_jni_is_vm_started (void);
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JNIEnv *gst_amc_jni_get_env (void);
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#define DEF_CALL_TYPE_METHOD(_type, _name, _jname, _retval) \
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_type gst_amc_jni_call_##_name##_method (JNIEnv *env, GError ** err, jobject obj, jmethodID methodID, ...);
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DEF_CALL_TYPE_METHOD (gboolean, boolean, Boolean, FALSE)
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DEF_CALL_TYPE_METHOD (gint8, byte, Byte, G_MININT8)
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DEF_CALL_TYPE_METHOD (gshort, short, Short, G_MINSHORT)
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DEF_CALL_TYPE_METHOD (gint, int, Int, G_MININT)
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DEF_CALL_TYPE_METHOD (gchar, char, Char, 0)
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DEF_CALL_TYPE_METHOD (glong, long, Long, G_MINLONG)
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DEF_CALL_TYPE_METHOD (gfloat, float, Float, G_MINFLOAT)
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DEF_CALL_TYPE_METHOD (gdouble, double, Double, G_MINDOUBLE)
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DEF_CALL_TYPE_METHOD (jobject, object, Object, NULL)
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gboolean gst_amc_jni_call_void_method (JNIEnv * env,
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GError ** error,
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jclass klass,
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jmethodID method, ...);
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#define DEF_GET_TYPE_FIELD(_type, _name, _jname, _retval) \
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_type gst_amc_jni_get_##_name##_field (JNIEnv *env, GError ** err, jobject obj, jfieldID fieldID);
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DEF_GET_TYPE_FIELD (gint, int, Int, G_MININT)
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DEF_GET_TYPE_FIELD (glong, long, Long, G_MINLONG)
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#endif
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