mirror of
https://github.com/mpv-player/mpv
synced 2024-12-17 20:34:58 +00:00
misc/jni: general code cleanup and refactor
Make it align with mpv's coding conventions in general and avoid unecessary Lavu use.
This commit is contained in:
sfan5
parent
1f3758adea
commit
75ae44472b
288
misc/jni.c
288
misc/jni.c
@ -20,11 +20,10 @@
|
||||
*/
|
||||
|
||||
#include <libavcodec/jni.h>
|
||||
#include <libavutil/mem.h>
|
||||
#include <libavutil/bprint.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
#include "jni.h"
|
||||
#include "mpv_talloc.h"
|
||||
#include "osdep/threads.h"
|
||||
|
||||
static JavaVM *java_vm;
|
||||
@ -46,13 +45,11 @@ static void jni_create_pthread_key(void)
|
||||
|
||||
JNIEnv *mp_jni_get_env(struct mp_log *log)
|
||||
{
|
||||
int ret = 0;
|
||||
JNIEnv *env = NULL;
|
||||
|
||||
mp_mutex_lock(&lock);
|
||||
if (java_vm == NULL) {
|
||||
if (!java_vm)
|
||||
java_vm = av_jni_get_java_vm(NULL);
|
||||
}
|
||||
|
||||
if (!java_vm) {
|
||||
mp_err(log, "No Java virtual machine has been registered\n");
|
||||
@ -61,11 +58,10 @@ JNIEnv *mp_jni_get_env(struct mp_log *log)
|
||||
|
||||
mp_exec_once(&once, jni_create_pthread_key);
|
||||
|
||||
if ((env = pthread_getspecific(current_env)) != NULL) {
|
||||
if ((env = pthread_getspecific(current_env)) != NULL)
|
||||
goto done;
|
||||
}
|
||||
|
||||
ret = (*java_vm)->GetEnv(java_vm, (void **)&env, JNI_VERSION_1_6);
|
||||
int ret = (*java_vm)->GetEnv(java_vm, (void **)&env, JNI_VERSION_1_6);
|
||||
switch(ret) {
|
||||
case JNI_EDETACHED:
|
||||
if ((*java_vm)->AttachCurrentThread(java_vm, &env, NULL) != 0) {
|
||||
@ -92,39 +88,27 @@ done:
|
||||
|
||||
char *mp_jni_jstring_to_utf_chars(JNIEnv *env, jstring string, struct mp_log *log)
|
||||
{
|
||||
char *ret = NULL;
|
||||
const char *utf_chars = NULL;
|
||||
|
||||
jboolean copy = 0;
|
||||
|
||||
if (!string) {
|
||||
if (!string)
|
||||
return NULL;
|
||||
}
|
||||
|
||||
utf_chars = (*env)->GetStringUTFChars(env, string, ©);
|
||||
const char *utf_chars = (*env)->GetStringUTFChars(env, string, NULL);
|
||||
if ((*env)->ExceptionCheck(env)) {
|
||||
(*env)->ExceptionClear(env);
|
||||
mp_err(log, "String.getStringUTFChars() threw an exception\n");
|
||||
mp_err(log, "getStringUTFChars() threw an exception\n");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
ret = av_strdup(utf_chars);
|
||||
char *ret = talloc_strdup(NULL, utf_chars);
|
||||
|
||||
(*env)->ReleaseStringUTFChars(env, string, utf_chars);
|
||||
if ((*env)->ExceptionCheck(env)) {
|
||||
(*env)->ExceptionClear(env);
|
||||
mp_err(log, "String.releaseStringUTFChars() threw an exception\n");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
jstring mp_jni_utf_chars_to_jstring(JNIEnv *env, const char *utf_chars, struct mp_log *log)
|
||||
jstring mp_jni_utf_chars_to_jstring(JNIEnv *env, const char *utf_chars,
|
||||
struct mp_log *log)
|
||||
{
|
||||
jstring ret;
|
||||
|
||||
ret = (*env)->NewStringUTF(env, utf_chars);
|
||||
jstring ret = (*env)->NewStringUTF(env, utf_chars);
|
||||
if ((*env)->ExceptionCheck(env)) {
|
||||
(*env)->ExceptionClear(env);
|
||||
mp_err(log, "NewStringUTF() threw an exception\n");
|
||||
@ -134,24 +118,19 @@ jstring mp_jni_utf_chars_to_jstring(JNIEnv *env, const char *utf_chars, struct m
|
||||
return ret;
|
||||
}
|
||||
|
||||
int mp_jni_exception_get_summary(JNIEnv *env, jthrowable exception, char **error, struct mp_log *log)
|
||||
int mp_jni_exception_get_summary(JNIEnv *env, jthrowable exception,
|
||||
char **error, struct mp_log *log)
|
||||
{
|
||||
int ret = 0;
|
||||
|
||||
AVBPrint bp;
|
||||
|
||||
char *name = NULL;
|
||||
char *message = NULL;
|
||||
|
||||
jclass class_class = NULL;
|
||||
jmethodID get_name_id = NULL;
|
||||
|
||||
jclass exception_class = NULL;
|
||||
jmethodID get_message_id = NULL;
|
||||
|
||||
jstring string = NULL;
|
||||
|
||||
av_bprint_init(&bp, 0, AV_BPRINT_SIZE_AUTOMATIC);
|
||||
*error = NULL;
|
||||
|
||||
exception_class = (*env)->GetObjectClass(env, exception);
|
||||
if ((*env)->ExceptionCheck(env)) {
|
||||
@ -169,7 +148,7 @@ int mp_jni_exception_get_summary(JNIEnv *env, jthrowable exception, char **error
|
||||
goto done;
|
||||
}
|
||||
|
||||
get_name_id = (*env)->GetMethodID(env, class_class, "getName", "()Ljava/lang/String;");
|
||||
jmethodID get_name_id = (*env)->GetMethodID(env, class_class, "getName", "()Ljava/lang/String;");
|
||||
if ((*env)->ExceptionCheck(env)) {
|
||||
(*env)->ExceptionClear(env);
|
||||
mp_err(log, "Could not find method Class.getName()\n");
|
||||
@ -191,10 +170,10 @@ int mp_jni_exception_get_summary(JNIEnv *env, jthrowable exception, char **error
|
||||
string = NULL;
|
||||
}
|
||||
|
||||
get_message_id = (*env)->GetMethodID(env, exception_class, "getMessage", "()Ljava/lang/String;");
|
||||
jmethodID get_message_id = (*env)->GetMethodID(env, exception_class, "getMessage", "()Ljava/lang/String;");
|
||||
if ((*env)->ExceptionCheck(env)) {
|
||||
(*env)->ExceptionClear(env);
|
||||
mp_err(log, "Could not find method java/lang/Throwable.getMessage()\n");
|
||||
mp_err(log, "Could not find method Throwable.getMessage()\n");
|
||||
ret = -1;
|
||||
goto done;
|
||||
}
|
||||
@ -214,21 +193,20 @@ int mp_jni_exception_get_summary(JNIEnv *env, jthrowable exception, char **error
|
||||
}
|
||||
|
||||
if (name && message) {
|
||||
av_bprintf(&bp, "%s: %s", name, message);
|
||||
*error = talloc_asprintf(NULL, "%s: %s", name, message);
|
||||
} else if (name && !message) {
|
||||
av_bprintf(&bp, "%s occurred", name);
|
||||
*error = talloc_asprintf(NULL, "%s occurred", name);
|
||||
} else if (!name && message) {
|
||||
av_bprintf(&bp, "Exception: %s", message);
|
||||
*error = talloc_asprintf(NULL, "Exception: %s", message);
|
||||
} else {
|
||||
mp_warn(log, "Could not retrieve exception name and message\n");
|
||||
av_bprintf(&bp, "Exception occurred");
|
||||
*error = talloc_strdup(NULL, "Exception occurred");
|
||||
}
|
||||
|
||||
ret = av_bprint_finalize(&bp, error);
|
||||
done:
|
||||
|
||||
av_free(name);
|
||||
av_free(message);
|
||||
talloc_free(name);
|
||||
talloc_free(message);
|
||||
|
||||
if (class_class) {
|
||||
(*env)->DeleteLocalRef(env, class_class);
|
||||
@ -247,126 +225,117 @@ done:
|
||||
|
||||
int mp_jni_exception_check(JNIEnv *env, int logging, struct mp_log *log)
|
||||
{
|
||||
int ret;
|
||||
|
||||
jthrowable exception;
|
||||
|
||||
char *message = NULL;
|
||||
|
||||
if (!(*(env))->ExceptionCheck((env))) {
|
||||
if (!(*env)->ExceptionCheck(env))
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (!logging) {
|
||||
(*(env))->ExceptionClear((env));
|
||||
(*env)->ExceptionClear(env);
|
||||
return -1;
|
||||
}
|
||||
|
||||
exception = (*env)->ExceptionOccurred(env);
|
||||
(*(env))->ExceptionClear((env));
|
||||
|
||||
if ((ret = mp_jni_exception_get_summary(env, exception, &message, log)) < 0) {
|
||||
(*env)->DeleteLocalRef(env, exception);
|
||||
return ret;
|
||||
}
|
||||
jthrowable exception = (*env)->ExceptionOccurred(env);
|
||||
(*env)->ExceptionClear(env);
|
||||
|
||||
char *message = NULL;
|
||||
int ret = mp_jni_exception_get_summary(env, exception, &message, log);
|
||||
(*env)->DeleteLocalRef(env, exception);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
mp_err(log, "%s\n", message);
|
||||
av_free(message);
|
||||
|
||||
talloc_free(message);
|
||||
return -1;
|
||||
}
|
||||
|
||||
int mp_jni_init_jfields(JNIEnv *env, void *jfields, const struct MPJniField *jfields_mapping, int global, struct mp_log *log)
|
||||
#define CHECK_EXC_MANDATORY() do { \
|
||||
if ((ret = mp_jni_exception_check(env, mandatory, log)) < 0 && \
|
||||
mandatory) { \
|
||||
goto done; \
|
||||
} \
|
||||
} while (0)
|
||||
|
||||
int mp_jni_init_jfields(JNIEnv *env, void *jfields,
|
||||
const struct MPJniField *jfields_mapping,
|
||||
int global, struct mp_log *log)
|
||||
{
|
||||
int i, ret = 0;
|
||||
int ret = 0;
|
||||
jclass last_clazz = NULL;
|
||||
|
||||
for (i = 0; jfields_mapping[i].name; i++) {
|
||||
int mandatory = jfields_mapping[i].mandatory;
|
||||
for (int i = 0; jfields_mapping[i].name; i++) {
|
||||
bool mandatory = !!jfields_mapping[i].mandatory;
|
||||
enum MPJniFieldType type = jfields_mapping[i].type;
|
||||
|
||||
if (type == MP_JNI_CLASS) {
|
||||
jclass clazz;
|
||||
void *jfield = (uint8_t*)jfields + jfields_mapping[i].offset;
|
||||
|
||||
if (type == MP_JNI_CLASS) {
|
||||
last_clazz = NULL;
|
||||
|
||||
clazz = (*env)->FindClass(env, jfields_mapping[i].name);
|
||||
if ((ret = mp_jni_exception_check(env, mandatory, log)) < 0 && mandatory) {
|
||||
goto done;
|
||||
}
|
||||
jclass clazz = (*env)->FindClass(env, jfields_mapping[i].name);
|
||||
CHECK_EXC_MANDATORY();
|
||||
|
||||
last_clazz = *(jclass*)((uint8_t*)jfields + jfields_mapping[i].offset) =
|
||||
last_clazz = *(jclass*)jfield =
|
||||
global ? (*env)->NewGlobalRef(env, clazz) : clazz;
|
||||
|
||||
if (global) {
|
||||
if (global)
|
||||
(*env)->DeleteLocalRef(env, clazz);
|
||||
}
|
||||
|
||||
} else {
|
||||
|
||||
if (!last_clazz) {
|
||||
ret = -1;
|
||||
break;
|
||||
}
|
||||
|
||||
switch(type) {
|
||||
case MP_JNI_FIELD: {
|
||||
jfieldID field_id = (*env)->GetFieldID(env, last_clazz, jfields_mapping[i].method, jfields_mapping[i].signature);
|
||||
if ((ret = mp_jni_exception_check(env, mandatory, log)) < 0 && mandatory) {
|
||||
goto done;
|
||||
}
|
||||
|
||||
*(jfieldID*)((uint8_t*)jfields + jfields_mapping[i].offset) = field_id;
|
||||
break;
|
||||
}
|
||||
case MP_JNI_STATIC_FIELD_AS_INT:
|
||||
case MP_JNI_STATIC_FIELD: {
|
||||
jfieldID field_id = (*env)->GetStaticFieldID(env, last_clazz, jfields_mapping[i].method, jfields_mapping[i].signature);
|
||||
if ((ret = mp_jni_exception_check(env, mandatory, log)) < 0 && mandatory) {
|
||||
goto done;
|
||||
}
|
||||
|
||||
if (type == MP_JNI_STATIC_FIELD_AS_INT) {
|
||||
if (field_id) {
|
||||
jint value = (*env)->GetStaticIntField(env, last_clazz, field_id);
|
||||
if ((ret = mp_jni_exception_check(env, mandatory, log)) < 0 && mandatory) {
|
||||
goto done;
|
||||
}
|
||||
*(jint*)((uint8_t*)jfields + jfields_mapping[i].offset) = value;
|
||||
}
|
||||
} else {
|
||||
*(jfieldID*)((uint8_t*)jfields + jfields_mapping[i].offset) = field_id;
|
||||
}
|
||||
break;
|
||||
}
|
||||
case MP_JNI_METHOD: {
|
||||
jmethodID method_id = (*env)->GetMethodID(env, last_clazz, jfields_mapping[i].method, jfields_mapping[i].signature);
|
||||
if ((ret = mp_jni_exception_check(env, mandatory, log)) < 0 && mandatory) {
|
||||
goto done;
|
||||
}
|
||||
|
||||
*(jmethodID*)((uint8_t*)jfields + jfields_mapping[i].offset) = method_id;
|
||||
break;
|
||||
}
|
||||
case MP_JNI_STATIC_METHOD: {
|
||||
jmethodID method_id = (*env)->GetStaticMethodID(env, last_clazz, jfields_mapping[i].method, jfields_mapping[i].signature);
|
||||
if ((ret = mp_jni_exception_check(env, mandatory, log)) < 0 && mandatory) {
|
||||
goto done;
|
||||
}
|
||||
|
||||
*(jmethodID*)((uint8_t*)jfields + jfields_mapping[i].offset) = method_id;
|
||||
break;
|
||||
}
|
||||
default:
|
||||
mp_err(log, "Unknown JNI field type\n");
|
||||
ret = -1;
|
||||
goto done;
|
||||
}
|
||||
|
||||
ret = 0;
|
||||
continue;
|
||||
}
|
||||
|
||||
if (!last_clazz) {
|
||||
ret = -1;
|
||||
break;
|
||||
}
|
||||
|
||||
switch (type) {
|
||||
case MP_JNI_FIELD: {
|
||||
jfieldID field_id = (*env)->GetFieldID(env, last_clazz,
|
||||
jfields_mapping[i].method, jfields_mapping[i].signature);
|
||||
CHECK_EXC_MANDATORY();
|
||||
|
||||
*(jfieldID*)jfield = field_id;
|
||||
break;
|
||||
}
|
||||
case MP_JNI_STATIC_FIELD_AS_INT:
|
||||
case MP_JNI_STATIC_FIELD: {
|
||||
jfieldID field_id = (*env)->GetStaticFieldID(env, last_clazz,
|
||||
jfields_mapping[i].method, jfields_mapping[i].signature);
|
||||
CHECK_EXC_MANDATORY();
|
||||
|
||||
if (type == MP_JNI_STATIC_FIELD_AS_INT) {
|
||||
if (field_id) {
|
||||
jint value = (*env)->GetStaticIntField(env, last_clazz, field_id);
|
||||
CHECK_EXC_MANDATORY();
|
||||
*(jint*)jfield = value;
|
||||
}
|
||||
} else {
|
||||
*(jfieldID*)jfield = field_id;
|
||||
}
|
||||
break;
|
||||
}
|
||||
case MP_JNI_METHOD: {
|
||||
jmethodID method_id = (*env)->GetMethodID(env, last_clazz,
|
||||
jfields_mapping[i].method, jfields_mapping[i].signature);
|
||||
CHECK_EXC_MANDATORY();
|
||||
|
||||
*(jmethodID*)jfield = method_id;
|
||||
break;
|
||||
}
|
||||
case MP_JNI_STATIC_METHOD: {
|
||||
jmethodID method_id = (*env)->GetStaticMethodID(env, last_clazz,
|
||||
jfields_mapping[i].method, jfields_mapping[i].signature);
|
||||
CHECK_EXC_MANDATORY();
|
||||
|
||||
*(jmethodID*)jfield = method_id;
|
||||
break;
|
||||
}
|
||||
default:
|
||||
mp_err(log, "Unknown JNI field type\n");
|
||||
ret = -1;
|
||||
goto done;
|
||||
}
|
||||
|
||||
ret = 0;
|
||||
}
|
||||
|
||||
done:
|
||||
@ -378,16 +347,20 @@ done:
|
||||
return ret;
|
||||
}
|
||||
|
||||
int mp_jni_reset_jfields(JNIEnv *env, void *jfields, const struct MPJniField *jfields_mapping, int global, struct mp_log *log)
|
||||
{
|
||||
int i;
|
||||
#undef CHECK_EXC_MANDATORY
|
||||
|
||||
for (i = 0; jfields_mapping[i].name; i++) {
|
||||
int mp_jni_reset_jfields(JNIEnv *env, void *jfields,
|
||||
const struct MPJniField *jfields_mapping,
|
||||
int global, struct mp_log *log)
|
||||
{
|
||||
for (int i = 0; jfields_mapping[i].name; i++) {
|
||||
enum MPJniFieldType type = jfields_mapping[i].type;
|
||||
|
||||
switch(type) {
|
||||
void *jfield = (uint8_t*)jfields + jfields_mapping[i].offset;
|
||||
|
||||
switch (type) {
|
||||
case MP_JNI_CLASS: {
|
||||
jclass clazz = *(jclass*)((uint8_t*)jfields + jfields_mapping[i].offset);
|
||||
jclass clazz = *(jclass*)jfield;
|
||||
if (!clazz)
|
||||
continue;
|
||||
|
||||
@ -397,29 +370,20 @@ int mp_jni_reset_jfields(JNIEnv *env, void *jfields, const struct MPJniField *jf
|
||||
(*env)->DeleteLocalRef(env, clazz);
|
||||
}
|
||||
|
||||
*(jclass*)((uint8_t*)jfields + jfields_mapping[i].offset) = NULL;
|
||||
*(jclass*)jfield = NULL;
|
||||
break;
|
||||
}
|
||||
case MP_JNI_FIELD: {
|
||||
*(jfieldID*)((uint8_t*)jfields + jfields_mapping[i].offset) = NULL;
|
||||
case MP_JNI_FIELD:
|
||||
case MP_JNI_STATIC_FIELD:
|
||||
*(jfieldID*)jfield = NULL;
|
||||
break;
|
||||
}
|
||||
case MP_JNI_STATIC_FIELD: {
|
||||
*(jfieldID*)((uint8_t*)jfields + jfields_mapping[i].offset) = NULL;
|
||||
case MP_JNI_STATIC_FIELD_AS_INT:
|
||||
*(jint*)jfield = 0;
|
||||
break;
|
||||
}
|
||||
case MP_JNI_STATIC_FIELD_AS_INT: {
|
||||
*(jint*)((uint8_t*)jfields + jfields_mapping[i].offset) = 0;
|
||||
case MP_JNI_METHOD:
|
||||
case MP_JNI_STATIC_METHOD:
|
||||
*(jmethodID*)jfield = NULL;
|
||||
break;
|
||||
}
|
||||
case MP_JNI_METHOD: {
|
||||
*(jmethodID*)((uint8_t*)jfields + jfields_mapping[i].offset) = NULL;
|
||||
break;
|
||||
}
|
||||
case MP_JNI_STATIC_METHOD: {
|
||||
*(jmethodID*)((uint8_t*)jfields + jfields_mapping[i].offset) = NULL;
|
||||
break;
|
||||
}
|
||||
default:
|
||||
mp_err(log, "Unknown JNI field type\n");
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user