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(Android) Cache JNI environment/pointer to RetroActivity class

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inside camera struct - attach thread at init function and detach
thread at free function
This commit is contained in:
twinaphex 2013-11-18 01:46:54 +01:00
parent bc17af7ac2
commit 1e4e0544bf
1 changed files with 48 additions and 15 deletions
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63
camera/android.c
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@ -18,51 +18,84 @@
#include "../driver.h"
#include "../android/native/jni/jni_macros.h"
static void *android_init(const char *device, uint64_t caps, unsigned width, unsigned height)
/* FIXME - we need to seriously profile JNI overhead here - whether we can cache certain
* objects/variables */
/* FIXME - check whether or not it is safe to attach the thread once at android_init and
* only detach it when calling android_free - might have to be done per-function but would
* introduce significant overhead */
typedef struct android_camera
{
JNIEnv *env;
JavaVM *java_vm;
jclass class; // RetroActivity class
} androidcamera_t;
static void *android_camera_init(const char *device, uint64_t caps, unsigned width, unsigned height)
{
(void)device;
(void)caps;
(void)width;
(void)height;
return (void*)0;
struct android_app *android_app = (struct android_app*)g_android;
androidcamera_t *androidcamera = (androidcamera_t*)calloc(1, sizeof(androidcamera_t));
if (!androidcamera)
return NULL;
androidcamera->java_vm = (JavaVM*)android_app->activity->vm;
(*androidcamera->java_vm)->AttachCurrentThread(androidcamera->java_vm, &androidcamera->env, 0);
GET_OBJECT_CLASS(androidcamera->env, androidcamera->class, android_app->activity->clazz);
return androidcamera;
}
static void android_free(void *data)
static void android_camera_free(void *data)
{
struct android_app *android_app = (struct android_app*)g_android;
androidcamera_t *androidcamera = (androidcamera_t*)data;
(void)android_app;
(void)data;
(*androidcamera->java_vm)->DetachCurrentThread(androidcamera->java_vm);
free(androidcamera);
}
static bool android_start(void *data)
static bool android_camera_start(void *data)
{
struct android_app *android_app = (struct android_app*)g_android;
androidcamera_t *androidcamera = (androidcamera_t*)data;
(void)android_app;
(void)data;
(void)androidcamera;
return true;
}
static void android_stop(void *data)
static void android_camera_stop(void *data)
{
struct android_app *android_app = (struct android_app*)g_android;
androidcamera_t *androidcamera = (androidcamera_t*)data;
(void)android_app;
(void)data;
(void)androidcamera;
}
static bool android_poll(void *data, retro_camera_frame_raw_framebuffer_t frame_raw_cb,
static bool android_camera_poll(void *data, retro_camera_frame_raw_framebuffer_t frame_raw_cb,
retro_camera_frame_opengl_texture_t frame_gl_cb)
{
struct android_app *android_app = (struct android_app*)g_android;
androidcamera_t *androidcamera = (androidcamera_t*)data;
(void)android_app;
(void)data;
(void)androidcamera;
return true;
}
const camera_driver_t camera_android = {
android_init,
android_free,
android_start,
android_stop,
android_poll,
android_camera_init,
android_camera_free,
android_camera_start,
android_camera_stop,
android_camera_poll,
"android",
};