gstreamer/subprojects/gst-plugins-bad/sys/androidmedia/jni/gstamcsurfacetexture-jni.c
Ratchanan Srirattanamet d0ffcb46df androidmedia: call all static_init() functions from single entry point
This allows the implementations to do custom logic behind the hood. For
example, when NDK implementation is added, the entrypoint can chooses to
statically initialize the NDK implementations or the JNI one.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4115>
2024-01-11 19:00:13 +00:00

448 lines
12 KiB
C

/*
* Copyright (C) 2013, Fluendo S.A.
* Author: Andoni Morales <amorales@fluendo.com>
*
* Copyright (C) 2014,2018 Collabora Ltd.
* Author: Matthieu Bouron <matthieu.bouron@collabora.com>
*
* This library 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
* version 2.1 of the License.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstjniutils.h"
#include "gstamcsurfacetexture-jni.h"
#include "gstamc-jni.h"
struct _GstAmcSurfaceTextureJNI
{
GstAmcSurfaceTexture parent_instance;
jobject jobject;
gint texture_id;
jobject listener;
jmethodID set_context_id;
GstAmcSurfaceTextureOnFrameAvailableCallback callback;
gpointer user_data;
};
static struct
{
jclass jklass;
jmethodID constructor;
jmethodID set_on_frame_available_listener;
jmethodID update_tex_image;
jmethodID detach_from_gl_context;
jmethodID attach_to_gl_context;
jmethodID get_transform_matrix;
jmethodID get_timestamp;
jmethodID release;
} surface_texture;
G_DEFINE_TYPE (GstAmcSurfaceTextureJNI, gst_amc_surface_texture_jni,
GST_TYPE_AMC_SURFACE_TEXTURE);
gboolean
gst_amc_surface_texture_jni_static_init (void)
{
JNIEnv *env;
GError *err = NULL;
env = gst_amc_jni_get_env ();
surface_texture.jklass = gst_amc_jni_get_class (env, &err,
"android/graphics/SurfaceTexture");
if (!surface_texture.jklass) {
GST_ERROR ("Failed to get android.graphics.SurfaceTexture class: %s",
err->message);
g_clear_error (&err);
return FALSE;
}
surface_texture.constructor =
gst_amc_jni_get_method_id (env, &err, surface_texture.jklass, "<init>",
"(I)V");
if (!surface_texture.constructor) {
goto error;
}
surface_texture.set_on_frame_available_listener =
gst_amc_jni_get_method_id (env, &err, surface_texture.jklass,
"setOnFrameAvailableListener",
"(Landroid/graphics/SurfaceTexture$OnFrameAvailableListener;)V");
if (!surface_texture.set_on_frame_available_listener) {
goto error;
}
surface_texture.update_tex_image =
gst_amc_jni_get_method_id (env, &err, surface_texture.jklass,
"updateTexImage", "()V");
if (!surface_texture.update_tex_image) {
goto error;
}
surface_texture.detach_from_gl_context =
gst_amc_jni_get_method_id (env, &err, surface_texture.jklass,
"detachFromGLContext", "()V");
if (!surface_texture.detach_from_gl_context) {
goto error;
}
surface_texture.attach_to_gl_context =
gst_amc_jni_get_method_id (env, &err, surface_texture.jklass,
"attachToGLContext", "(I)V");
if (!surface_texture.attach_to_gl_context) {
goto error;
}
surface_texture.get_transform_matrix =
gst_amc_jni_get_method_id (env, &err, surface_texture.jklass,
"getTransformMatrix", "([F)V");
if (!surface_texture.get_transform_matrix) {
goto error;
}
surface_texture.get_timestamp =
gst_amc_jni_get_method_id (env, &err, surface_texture.jklass,
"getTimestamp", "()J");
if (!surface_texture.get_timestamp) {
goto error;
}
surface_texture.release =
gst_amc_jni_get_method_id (env, &err, surface_texture.jklass, "release",
"()V");
if (!surface_texture.release) {
goto error;
}
return TRUE;
error:
GST_ERROR ("Failed to get android.graphics.SurfaceTexture methods: %s",
err->message);
g_clear_error (&err);
gst_amc_jni_object_unref (env, surface_texture.constructor);
return FALSE;
}
static gboolean
gst_amc_surface_texture_jni_update_tex_image (GstAmcSurfaceTexture * base,
GError ** err)
{
GstAmcSurfaceTextureJNI *self = GST_AMC_SURFACE_TEXTURE_JNI (base);
JNIEnv *env;
env = gst_amc_jni_get_env ();
return gst_amc_jni_call_void_method (env, err, self->jobject,
surface_texture.update_tex_image);
}
static gboolean
gst_amc_surface_texture_jni_detach_from_gl_context (GstAmcSurfaceTexture * base,
GError ** err)
{
GstAmcSurfaceTextureJNI *self = GST_AMC_SURFACE_TEXTURE_JNI (base);
JNIEnv *env;
gboolean ret;
env = gst_amc_jni_get_env ();
ret =
gst_amc_jni_call_void_method (env, err, self->jobject,
surface_texture.detach_from_gl_context);
self->texture_id = 0;
return ret;
}
static gboolean
gst_amc_surface_texture_jni_attach_to_gl_context (GstAmcSurfaceTexture * base,
gint texture_id, GError ** err)
{
GstAmcSurfaceTextureJNI *self = GST_AMC_SURFACE_TEXTURE_JNI (base);
JNIEnv *env;
gboolean ret;
env = gst_amc_jni_get_env ();
ret =
gst_amc_jni_call_void_method (env, err, self->jobject,
surface_texture.attach_to_gl_context, texture_id);
self->texture_id = texture_id;
return ret;
}
static gboolean
gst_amc_surface_texture_jni_get_transform_matrix (GstAmcSurfaceTexture * base,
gfloat * matrix, GError ** err)
{
GstAmcSurfaceTextureJNI *self = GST_AMC_SURFACE_TEXTURE_JNI (base);
JNIEnv *env;
gboolean ret;
/* 4x4 Matrix */
jsize size = 16;
jfloatArray floatarray;
env = gst_amc_jni_get_env ();
floatarray = (*env)->NewFloatArray (env, size);
ret =
gst_amc_jni_call_void_method (env, err, self->jobject,
surface_texture.get_transform_matrix, floatarray);
if (ret) {
(*env)->GetFloatArrayRegion (env, floatarray, 0, size, (jfloat *) matrix);
(*env)->DeleteLocalRef (env, floatarray);
}
return ret;
}
static gboolean
gst_amc_surface_texture_jni_get_timestamp (GstAmcSurfaceTexture * base,
gint64 * result, GError ** err)
{
GstAmcSurfaceTextureJNI *self = GST_AMC_SURFACE_TEXTURE_JNI (base);
JNIEnv *env;
env = gst_amc_jni_get_env ();
return gst_amc_jni_call_long_method (env, err, self->jobject,
surface_texture.get_timestamp, result);
}
static gboolean
gst_amc_surface_texture_jni_release (GstAmcSurfaceTexture * base, GError ** err)
{
GstAmcSurfaceTextureJNI *self = GST_AMC_SURFACE_TEXTURE_JNI (base);
JNIEnv *env;
env = gst_amc_jni_get_env ();
return gst_amc_jni_call_void_method (env, err, self->jobject,
surface_texture.release);
}
static void
on_frame_available_cb (JNIEnv * env, jobject thiz,
long long context, jobject surfaceTexture)
{
GstAmcSurfaceTextureJNI *self = JLONG_TO_GPOINTER (context);
if (!self || !self->callback)
return;
self->callback (GST_AMC_SURFACE_TEXTURE (self), self->user_data);
}
static gboolean
create_listener (GstAmcSurfaceTextureJNI * self, JNIEnv * env, GError ** err)
{
jclass listener_cls = NULL;
jmethodID constructor_id = 0;
JNINativeMethod amcOnFrameAvailableListener = {
"native_onFrameAvailable",
"(JLandroid/graphics/SurfaceTexture;)V",
(void *) on_frame_available_cb,
};
listener_cls =
gst_amc_jni_get_application_class (env,
"org/freedesktop/gstreamer/androidmedia/GstAmcOnFrameAvailableListener",
err);
if (!listener_cls) {
return FALSE;
}
(*env)->RegisterNatives (env, listener_cls, &amcOnFrameAvailableListener, 1);
if ((*env)->ExceptionCheck (env)) {
gst_amc_jni_set_error (env, err, GST_LIBRARY_ERROR,
GST_LIBRARY_ERROR_FAILED, "Failed to register native methods");
goto done;
}
constructor_id =
gst_amc_jni_get_method_id (env, err, listener_cls, "<init>", "()V");
if (!constructor_id) {
goto done;
}
self->set_context_id =
gst_amc_jni_get_method_id (env, err, listener_cls, "setContext", "(J)V");
if (!self->set_context_id) {
goto done;
}
self->listener =
gst_amc_jni_new_object (env, err, TRUE, listener_cls, constructor_id);
if (!self->listener) {
goto done;
}
if (!gst_amc_jni_call_void_method (env, err, self->listener,
self->set_context_id, GPOINTER_TO_JLONG (self))) {
gst_amc_jni_object_unref (env, self->listener);
self->listener = NULL;
}
done:
gst_amc_jni_object_unref (env, listener_cls);
return self->listener != NULL;
}
static gboolean
remove_listener (GstAmcSurfaceTextureJNI * self, JNIEnv * env, GError ** err)
{
if (self->listener) {
if (!gst_amc_jni_call_void_method (env, err, self->listener,
self->set_context_id, GPOINTER_TO_JLONG (NULL)))
return FALSE;
gst_amc_jni_object_unref (env, self->listener);
self->listener = NULL;
}
return TRUE;
}
static gboolean
gst_amc_surface_texture_jni_set_on_frame_available_callback
(GstAmcSurfaceTexture * base,
GstAmcSurfaceTextureOnFrameAvailableCallback callback, gpointer user_data,
GError ** err)
{
GstAmcSurfaceTextureJNI *self = GST_AMC_SURFACE_TEXTURE_JNI (base);
JNIEnv *env;
GError *local_error = NULL;
env = gst_amc_jni_get_env ();
if (!remove_listener (self, env, err))
return FALSE;
self->callback = callback;
self->user_data = user_data;
if (callback == NULL)
return TRUE;
if (!create_listener (self, env, &local_error)) {
GST_ERROR ("Could not create listener: %s", local_error->message);
g_propagate_error (err, local_error);
return FALSE;
}
if (!gst_amc_jni_call_void_method (env, err, self->jobject,
surface_texture.set_on_frame_available_listener, self->listener)) {
remove_listener (self, env, NULL);
return FALSE;
}
return TRUE;
}
static void
gst_amc_surface_texture_jni_dispose (GObject * object)
{
GstAmcSurfaceTextureJNI *self = GST_AMC_SURFACE_TEXTURE_JNI (object);
JNIEnv *env;
GError *err = NULL;
env = gst_amc_jni_get_env ();
if (!gst_amc_surface_texture_jni_release (GST_AMC_SURFACE_TEXTURE (self),
&err)) {
GST_ERROR ("Could not release surface texture: %s", err->message);
g_clear_error (&err);
}
remove_listener (self, env, NULL);
if (self->jobject) {
gst_amc_jni_object_unref (env, self->jobject);
}
G_OBJECT_CLASS (gst_amc_surface_texture_jni_parent_class)->dispose (object);
}
static void
gst_amc_surface_texture_jni_class_init (GstAmcSurfaceTextureJNIClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstAmcSurfaceTextureClass *surface_texture_class =
GST_AMC_SURFACE_TEXTURE_CLASS (klass);
gobject_class->dispose = gst_amc_surface_texture_jni_dispose;
surface_texture_class->update_tex_image =
gst_amc_surface_texture_jni_update_tex_image;
surface_texture_class->detach_from_gl_context =
gst_amc_surface_texture_jni_detach_from_gl_context;
surface_texture_class->attach_to_gl_context =
gst_amc_surface_texture_jni_attach_to_gl_context;
surface_texture_class->get_transform_matrix =
gst_amc_surface_texture_jni_get_transform_matrix;
surface_texture_class->get_timestamp =
gst_amc_surface_texture_jni_get_timestamp;
surface_texture_class->release = gst_amc_surface_texture_jni_release;
surface_texture_class->set_on_frame_available_callback =
gst_amc_surface_texture_jni_set_on_frame_available_callback;
}
static void
gst_amc_surface_texture_jni_init (GstAmcSurfaceTextureJNI * self)
{
}
GstAmcSurfaceTextureJNI *
gst_amc_surface_texture_jni_new (GError ** err)
{
GstAmcSurfaceTextureJNI *self = NULL;
JNIEnv *env;
self = g_object_new (GST_TYPE_AMC_SURFACE_TEXTURE_JNI, NULL);
env = gst_amc_jni_get_env ();
self->texture_id = 0;
self->jobject =
gst_amc_jni_new_object (env, err, TRUE, surface_texture.jklass,
surface_texture.constructor, self->texture_id);
if (self->jobject == NULL) {
goto error;
}
if (!gst_amc_surface_texture_jni_detach_from_gl_context ((GstAmcSurfaceTexture
*) self, err)) {
goto error;
}
return self;
error:
if (self)
g_object_unref (self);
return NULL;
}
jobject
gst_amc_surface_texture_jni_get_jobject (GstAmcSurfaceTextureJNI * self)
{
return self->jobject;
}