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|
/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include "android_util_Binder.h"
#include <surfaceflinger/SurfaceComposerClient.h>
#include <ui/Region.h>
#include <ui/Rect.h>
#include <SkCanvas.h>
#include <SkBitmap.h>
#include <SkRegion.h>
#include "jni.h"
#include <android_runtime/AndroidRuntime.h>
#include <utils/misc.h>
// ----------------------------------------------------------------------------
namespace android {
// ----------------------------------------------------------------------------
static const char* const OutOfResourcesException =
"android/view/Surface$OutOfResourcesException";
struct sso_t {
jfieldID client;
};
static sso_t sso;
struct so_t {
jfieldID surfaceControl;
jfieldID surface;
jfieldID saveCount;
jfieldID canvas;
};
static so_t so;
struct ro_t {
jfieldID l;
jfieldID t;
jfieldID r;
jfieldID b;
};
static ro_t ro;
struct po_t {
jfieldID x;
jfieldID y;
};
static po_t po;
struct co_t {
jfieldID surfaceFormat;
};
static co_t co;
struct no_t {
jfieldID native_canvas;
jfieldID native_region;
jfieldID native_parcel;
};
static no_t no;
static __attribute__((noinline))
void doThrow(JNIEnv* env, const char* exc, const char* msg = NULL)
{
if (!env->ExceptionOccurred()) {
jclass npeClazz = env->FindClass(exc);
env->ThrowNew(npeClazz, msg);
}
}
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
static void SurfaceSession_init(JNIEnv* env, jobject clazz)
{
sp<SurfaceComposerClient> client = new SurfaceComposerClient;
client->incStrong(clazz);
env->SetIntField(clazz, sso.client, (int)client.get());
}
static void SurfaceSession_destroy(JNIEnv* env, jobject clazz)
{
SurfaceComposerClient* client =
(SurfaceComposerClient*)env->GetIntField(clazz, sso.client);
if (client != 0) {
client->decStrong(clazz);
env->SetIntField(clazz, sso.client, 0);
}
}
static void SurfaceSession_kill(JNIEnv* env, jobject clazz)
{
SurfaceComposerClient* client =
(SurfaceComposerClient*)env->GetIntField(clazz, sso.client);
if (client != 0) {
client->dispose();
client->decStrong(clazz);
env->SetIntField(clazz, sso.client, 0);
}
}
// ----------------------------------------------------------------------------
static sp<SurfaceControl> getSurfaceControl(JNIEnv* env, jobject clazz)
{
SurfaceControl* const p =
(SurfaceControl*)env->GetIntField(clazz, so.surfaceControl);
return sp<SurfaceControl>(p);
}
static void setSurfaceControl(JNIEnv* env, jobject clazz,
const sp<SurfaceControl>& surface)
{
SurfaceControl* const p =
(SurfaceControl*)env->GetIntField(clazz, so.surfaceControl);
if (surface.get()) {
surface->incStrong(clazz);
}
if (p) {
p->decStrong(clazz);
}
env->SetIntField(clazz, so.surfaceControl, (int)surface.get());
}
static sp<Surface> getSurface(JNIEnv* env, jobject clazz)
{
sp<Surface> result((Surface*)env->GetIntField(clazz, so.surface));
if (result == 0) {
/*
* if this method is called from the WindowManager's process, it means
* the client is is not remote, and therefore is allowed to have
* a Surface (data), so we create it here.
* If we don't have a SurfaceControl, it means we're in a different
* process.
*/
SurfaceControl* const control =
(SurfaceControl*)env->GetIntField(clazz, so.surfaceControl);
if (control) {
result = control->getSurface();
if (result != 0) {
result->incStrong(clazz);
env->SetIntField(clazz, so.surface, (int)result.get());
}
}
}
return result;
}
static void setSurface(JNIEnv* env, jobject clazz, const sp<Surface>& surface)
{
Surface* const p = (Surface*)env->GetIntField(clazz, so.surface);
if (surface.get()) {
surface->incStrong(clazz);
}
if (p) {
p->decStrong(clazz);
}
env->SetIntField(clazz, so.surface, (int)surface.get());
}
// ----------------------------------------------------------------------------
static void Surface_init(
JNIEnv* env, jobject clazz,
jobject session,
jint pid, jstring jname, jint dpy, jint w, jint h, jint format, jint flags)
{
if (session == NULL) {
doThrow(env, "java/lang/NullPointerException");
return;
}
SurfaceComposerClient* client =
(SurfaceComposerClient*)env->GetIntField(session, sso.client);
sp<SurfaceControl> surface;
if (jname == NULL) {
surface = client->createSurface(pid, dpy, w, h, format, flags);
} else {
const jchar* str = env->GetStringCritical(jname, 0);
const String8 name(str, env->GetStringLength(jname));
env->ReleaseStringCritical(jname, str);
surface = client->createSurface(pid, name, dpy, w, h, format, flags);
}
if (surface == 0) {
doThrow(env, OutOfResourcesException);
return;
}
setSurfaceControl(env, clazz, surface);
}
static void Surface_initParcel(JNIEnv* env, jobject clazz, jobject argParcel)
{
Parcel* parcel = (Parcel*)env->GetIntField(argParcel, no.native_parcel);
if (parcel == NULL) {
doThrow(env, "java/lang/NullPointerException", NULL);
return;
}
sp<Surface> rhs = new Surface(*parcel);
setSurface(env, clazz, rhs);
}
static void Surface_destroy(JNIEnv* env, jobject clazz, uintptr_t *ostack)
{
const sp<SurfaceControl>& surface(getSurfaceControl(env, clazz));
if (SurfaceControl::isValid(surface)) {
surface->clear();
}
setSurfaceControl(env, clazz, 0);
setSurface(env, clazz, 0);
}
static void Surface_release(JNIEnv* env, jobject clazz, uintptr_t *ostack)
{
setSurfaceControl(env, clazz, 0);
setSurface(env, clazz, 0);
}
static jboolean Surface_isValid(JNIEnv* env, jobject clazz)
{
const sp<SurfaceControl>& surfaceControl(getSurfaceControl(env, clazz));
if (surfaceControl != 0) {
return SurfaceControl::isValid(surfaceControl) ? JNI_TRUE : JNI_FALSE;
}
const sp<Surface>& surface(getSurface(env, clazz));
return Surface::isValid(surface) ? JNI_TRUE : JNI_FALSE;
}
static inline SkBitmap::Config convertPixelFormat(PixelFormat format)
{
/* note: if PIXEL_FORMAT_RGBX_8888 means that all alpha bytes are 0xFF, then
we can map to SkBitmap::kARGB_8888_Config, and optionally call
bitmap.setIsOpaque(true) on the resulting SkBitmap (as an accelerator)
*/
switch (format) {
case PIXEL_FORMAT_RGBX_8888: return SkBitmap::kARGB_8888_Config;
case PIXEL_FORMAT_RGBA_8888: return SkBitmap::kARGB_8888_Config;
case PIXEL_FORMAT_RGBA_4444: return SkBitmap::kARGB_4444_Config;
case PIXEL_FORMAT_RGB_565: return SkBitmap::kRGB_565_Config;
case PIXEL_FORMAT_A_8: return SkBitmap::kA8_Config;
default: return SkBitmap::kNo_Config;
}
}
static jobject Surface_lockCanvas(JNIEnv* env, jobject clazz, jobject dirtyRect)
{
const sp<Surface>& surface(getSurface(env, clazz));
if (!Surface::isValid(surface))
return 0;
// get dirty region
Region dirtyRegion;
if (dirtyRect) {
Rect dirty;
dirty.left = env->GetIntField(dirtyRect, ro.l);
dirty.top = env->GetIntField(dirtyRect, ro.t);
dirty.right = env->GetIntField(dirtyRect, ro.r);
dirty.bottom= env->GetIntField(dirtyRect, ro.b);
if (!dirty.isEmpty()) {
dirtyRegion.set(dirty);
}
} else {
dirtyRegion.set(Rect(0x3FFF,0x3FFF));
}
Surface::SurfaceInfo info;
status_t err = surface->lock(&info, &dirtyRegion);
if (err < 0) {
const char* const exception = (err == NO_MEMORY) ?
OutOfResourcesException :
"java/lang/IllegalArgumentException";
doThrow(env, exception, NULL);
return 0;
}
// Associate a SkCanvas object to this surface
jobject canvas = env->GetObjectField(clazz, so.canvas);
env->SetIntField(canvas, co.surfaceFormat, info.format);
SkCanvas* nativeCanvas = (SkCanvas*)env->GetIntField(canvas, no.native_canvas);
SkBitmap bitmap;
ssize_t bpr = info.s * bytesPerPixel(info.format);
bitmap.setConfig(convertPixelFormat(info.format), info.w, info.h, bpr);
if (info.format == PIXEL_FORMAT_RGBX_8888) {
bitmap.setIsOpaque(true);
}
if (info.w > 0 && info.h > 0) {
bitmap.setPixels(info.bits);
} else {
// be safe with an empty bitmap.
bitmap.setPixels(NULL);
}
nativeCanvas->setBitmapDevice(bitmap);
SkRegion clipReg;
if (dirtyRegion.isRect()) { // very common case
const Rect& b(dirtyRegion.getBounds());
clipReg.setRect(b.left, b.top, b.right, b.bottom);
} else {
size_t count;
Rect const* r = dirtyRegion.getArray(&count);
while (count) {
clipReg.op(r->left, r->top, r->right, r->bottom, SkRegion::kUnion_Op);
r++, count--;
}
}
nativeCanvas->clipRegion(clipReg);
int saveCount = nativeCanvas->save();
env->SetIntField(clazz, so.saveCount, saveCount);
if (dirtyRect) {
const Rect& bounds(dirtyRegion.getBounds());
env->SetIntField(dirtyRect, ro.l, bounds.left);
env->SetIntField(dirtyRect, ro.t, bounds.top);
env->SetIntField(dirtyRect, ro.r, bounds.right);
env->SetIntField(dirtyRect, ro.b, bounds.bottom);
}
return canvas;
}
static void Surface_unlockCanvasAndPost(
JNIEnv* env, jobject clazz, jobject argCanvas)
{
jobject canvas = env->GetObjectField(clazz, so.canvas);
if (canvas != argCanvas) {
doThrow(env, "java/lang/IllegalArgumentException", NULL);
return;
}
const sp<Surface>& surface(getSurface(env, clazz));
if (!Surface::isValid(surface))
return;
// detach the canvas from the surface
SkCanvas* nativeCanvas = (SkCanvas*)env->GetIntField(canvas, no.native_canvas);
int saveCount = env->GetIntField(clazz, so.saveCount);
nativeCanvas->restoreToCount(saveCount);
nativeCanvas->setBitmapDevice(SkBitmap());
env->SetIntField(clazz, so.saveCount, 0);
// unlock surface
status_t err = surface->unlockAndPost();
if (err < 0) {
doThrow(env, "java/lang/IllegalArgumentException", NULL);
}
}
static void Surface_unlockCanvas(
JNIEnv* env, jobject clazz, jobject argCanvas)
{
// XXX: this API has been removed
doThrow(env, "java/lang/IllegalArgumentException", NULL);
}
static void Surface_openTransaction(
JNIEnv* env, jobject clazz)
{
SurfaceComposerClient::openGlobalTransaction();
}
static void Surface_closeTransaction(
JNIEnv* env, jobject clazz)
{
SurfaceComposerClient::closeGlobalTransaction();
}
static void Surface_setOrientation(
JNIEnv* env, jobject clazz, jint display, jint orientation, jint flags)
{
int err = SurfaceComposerClient::setOrientation(display, orientation, flags);
if (err < 0) {
doThrow(env, "java/lang/IllegalArgumentException", NULL);
}
}
static void Surface_freezeDisplay(
JNIEnv* env, jobject clazz, jint display)
{
int err = SurfaceComposerClient::freezeDisplay(display, 0);
if (err < 0) {
doThrow(env, "java/lang/IllegalArgumentException", NULL);
}
}
static void Surface_unfreezeDisplay(
JNIEnv* env, jobject clazz, jint display)
{
int err = SurfaceComposerClient::unfreezeDisplay(display, 0);
if (err < 0) {
doThrow(env, "java/lang/IllegalArgumentException", NULL);
}
}
static void Surface_setLayer(
JNIEnv* env, jobject clazz, jint zorder)
{
const sp<SurfaceControl>& surface(getSurfaceControl(env, clazz));
if (surface == 0) return;
status_t err = surface->setLayer(zorder);
if (err<0 && err!=NO_INIT)
doThrow(env, "java/lang/IllegalArgumentException", NULL);
}
static void Surface_setPosition(
JNIEnv* env, jobject clazz, jint x, jint y)
{
const sp<SurfaceControl>& surface(getSurfaceControl(env, clazz));
if (surface == 0) return;
status_t err = surface->setPosition(x, y);
if (err<0 && err!=NO_INIT)
doThrow(env, "java/lang/IllegalArgumentException", NULL);
}
static void Surface_setSize(
JNIEnv* env, jobject clazz, jint w, jint h)
{
const sp<SurfaceControl>& surface(getSurfaceControl(env, clazz));
if (surface == 0) return;
status_t err = surface->setSize(w, h);
if (err<0 && err!=NO_INIT)
doThrow(env, "java/lang/IllegalArgumentException", NULL);
}
static void Surface_hide(
JNIEnv* env, jobject clazz)
{
const sp<SurfaceControl>& surface(getSurfaceControl(env, clazz));
if (surface == 0) return;
status_t err = surface->hide();
if (err<0 && err!=NO_INIT)
doThrow(env, "java/lang/IllegalArgumentException", NULL);
}
static void Surface_show(
JNIEnv* env, jobject clazz)
{
const sp<SurfaceControl>& surface(getSurfaceControl(env, clazz));
if (surface == 0) return;
status_t err = surface->show();
if (err<0 && err!=NO_INIT)
doThrow(env, "java/lang/IllegalArgumentException", NULL);
}
static void Surface_freeze(
JNIEnv* env, jobject clazz)
{
const sp<SurfaceControl>& surface(getSurfaceControl(env, clazz));
if (surface == 0) return;
status_t err = surface->freeze();
if (err<0 && err!=NO_INIT)
doThrow(env, "java/lang/IllegalArgumentException", NULL);
}
static void Surface_unfreeze(
JNIEnv* env, jobject clazz)
{
const sp<SurfaceControl>& surface(getSurfaceControl(env, clazz));
if (surface == 0) return;
status_t err = surface->unfreeze();
if (err<0 && err!=NO_INIT)
doThrow(env, "java/lang/IllegalArgumentException", NULL);
}
static void Surface_setFlags(
JNIEnv* env, jobject clazz, jint flags, jint mask)
{
const sp<SurfaceControl>& surface(getSurfaceControl(env, clazz));
if (surface == 0) return;
status_t err = surface->setFlags(flags, mask);
if (err<0 && err!=NO_INIT)
doThrow(env, "java/lang/IllegalArgumentException", NULL);
}
static void Surface_setTransparentRegion(
JNIEnv* env, jobject clazz, jobject argRegion)
{
const sp<SurfaceControl>& surface(getSurfaceControl(env, clazz));
if (surface == 0) return;
SkRegion* nativeRegion = (SkRegion*)env->GetIntField(argRegion, no.native_region);
const SkIRect& b(nativeRegion->getBounds());
Region reg(Rect(b.fLeft, b.fTop, b.fRight, b.fBottom));
if (nativeRegion->isComplex()) {
SkRegion::Iterator it(*nativeRegion);
while (!it.done()) {
const SkIRect& r(it.rect());
reg.addRectUnchecked(r.fLeft, r.fTop, r.fRight, r.fBottom);
it.next();
}
}
status_t err = surface->setTransparentRegionHint(reg);
if (err<0 && err!=NO_INIT)
doThrow(env, "java/lang/IllegalArgumentException", NULL);
}
static void Surface_setAlpha(
JNIEnv* env, jobject clazz, jfloat alpha)
{
const sp<SurfaceControl>& surface(getSurfaceControl(env, clazz));
if (surface == 0) return;
status_t err = surface->setAlpha(alpha);
if (err<0 && err!=NO_INIT)
doThrow(env, "java/lang/IllegalArgumentException", NULL);
}
static void Surface_setMatrix(
JNIEnv* env, jobject clazz,
jfloat dsdx, jfloat dtdx, jfloat dsdy, jfloat dtdy)
{
const sp<SurfaceControl>& surface(getSurfaceControl(env, clazz));
if (surface == 0) return;
status_t err = surface->setMatrix(dsdx, dtdx, dsdy, dtdy);
if (err<0 && err!=NO_INIT)
doThrow(env, "java/lang/IllegalArgumentException", NULL);
}
static void Surface_setFreezeTint(
JNIEnv* env, jobject clazz,
jint tint)
{
const sp<SurfaceControl>& surface(getSurfaceControl(env, clazz));
if (surface == 0) return;
status_t err = surface->setFreezeTint(tint);
if (err<0 && err!=NO_INIT)
doThrow(env, "java/lang/IllegalArgumentException", NULL);
}
// ----------------------------------------------------------------------------
static void Surface_copyFrom(
JNIEnv* env, jobject clazz, jobject other)
{
if (clazz == other)
return;
if (other == NULL) {
doThrow(env, "java/lang/NullPointerException", NULL);
return;
}
/*
* This is used by the WindowManagerService just after constructing
* a Surface and is necessary for returning the Surface reference to
* the caller. At this point, we should only have a SurfaceControl.
*/
const sp<SurfaceControl>& surface = getSurfaceControl(env, clazz);
const sp<SurfaceControl>& rhs = getSurfaceControl(env, other);
if (!SurfaceControl::isSameSurface(surface, rhs)) {
// we reassign the surface only if it's a different one
// otherwise we would loose our client-side state.
setSurfaceControl(env, clazz, rhs);
}
}
static void Surface_readFromParcel(
JNIEnv* env, jobject clazz, jobject argParcel)
{
Parcel* parcel = (Parcel*)env->GetIntField( argParcel, no.native_parcel);
if (parcel == NULL) {
doThrow(env, "java/lang/NullPointerException", NULL);
return;
}
const sp<Surface>& control(getSurface(env, clazz));
sp<Surface> rhs = new Surface(*parcel);
if (!Surface::isSameSurface(control, rhs)) {
// we reassign the surface only if it's a different one
// otherwise we would loose our client-side state.
setSurface(env, clazz, rhs);
}
}
static void Surface_writeToParcel(
JNIEnv* env, jobject clazz, jobject argParcel, jint flags)
{
Parcel* parcel = (Parcel*)env->GetIntField(
argParcel, no.native_parcel);
if (parcel == NULL) {
doThrow(env, "java/lang/NullPointerException", NULL);
return;
}
const sp<SurfaceControl>& control(getSurfaceControl(env, clazz));
SurfaceControl::writeSurfaceToParcel(control, parcel);
}
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
const char* const kSurfaceSessionClassPathName = "android/view/SurfaceSession";
const char* const kSurfaceClassPathName = "android/view/Surface";
static void nativeClassInit(JNIEnv* env, jclass clazz);
static JNINativeMethod gSurfaceSessionMethods[] = {
{"init", "()V", (void*)SurfaceSession_init },
{"destroy", "()V", (void*)SurfaceSession_destroy },
{"kill", "()V", (void*)SurfaceSession_kill },
};
static JNINativeMethod gSurfaceMethods[] = {
{"nativeClassInit", "()V", (void*)nativeClassInit },
{"init", "(Landroid/view/SurfaceSession;ILjava/lang/String;IIIII)V", (void*)Surface_init },
{"init", "(Landroid/os/Parcel;)V", (void*)Surface_initParcel },
{"destroy", "()V", (void*)Surface_destroy },
{"release", "()V", (void*)Surface_release },
{"copyFrom", "(Landroid/view/Surface;)V", (void*)Surface_copyFrom },
{"isValid", "()Z", (void*)Surface_isValid },
{"lockCanvasNative", "(Landroid/graphics/Rect;)Landroid/graphics/Canvas;", (void*)Surface_lockCanvas },
{"unlockCanvasAndPost", "(Landroid/graphics/Canvas;)V", (void*)Surface_unlockCanvasAndPost },
{"unlockCanvas", "(Landroid/graphics/Canvas;)V", (void*)Surface_unlockCanvas },
{"openTransaction", "()V", (void*)Surface_openTransaction },
{"closeTransaction", "()V", (void*)Surface_closeTransaction },
{"setOrientation", "(III)V", (void*)Surface_setOrientation },
{"freezeDisplay", "(I)V", (void*)Surface_freezeDisplay },
{"unfreezeDisplay", "(I)V", (void*)Surface_unfreezeDisplay },
{"setLayer", "(I)V", (void*)Surface_setLayer },
{"setPosition", "(II)V",(void*)Surface_setPosition },
{"setSize", "(II)V",(void*)Surface_setSize },
{"hide", "()V", (void*)Surface_hide },
{"show", "()V", (void*)Surface_show },
{"freeze", "()V", (void*)Surface_freeze },
{"unfreeze", "()V", (void*)Surface_unfreeze },
{"setFlags", "(II)V",(void*)Surface_setFlags },
{"setTransparentRegionHint","(Landroid/graphics/Region;)V", (void*)Surface_setTransparentRegion },
{"setAlpha", "(F)V", (void*)Surface_setAlpha },
{"setMatrix", "(FFFF)V", (void*)Surface_setMatrix },
{"setFreezeTint", "(I)V", (void*)Surface_setFreezeTint },
{"readFromParcel", "(Landroid/os/Parcel;)V", (void*)Surface_readFromParcel },
{"writeToParcel", "(Landroid/os/Parcel;I)V", (void*)Surface_writeToParcel },
};
void nativeClassInit(JNIEnv* env, jclass clazz)
{
so.surface = env->GetFieldID(clazz, "mSurface", "I");
so.surfaceControl = env->GetFieldID(clazz, "mSurfaceControl", "I");
so.saveCount = env->GetFieldID(clazz, "mSaveCount", "I");
so.canvas = env->GetFieldID(clazz, "mCanvas", "Landroid/graphics/Canvas;");
jclass surfaceSession = env->FindClass("android/view/SurfaceSession");
sso.client = env->GetFieldID(surfaceSession, "mClient", "I");
jclass canvas = env->FindClass("android/graphics/Canvas");
no.native_canvas = env->GetFieldID(canvas, "mNativeCanvas", "I");
co.surfaceFormat = env->GetFieldID(canvas, "mSurfaceFormat", "I");
jclass region = env->FindClass("android/graphics/Region");
no.native_region = env->GetFieldID(region, "mNativeRegion", "I");
jclass parcel = env->FindClass("android/os/Parcel");
no.native_parcel = env->GetFieldID(parcel, "mObject", "I");
jclass rect = env->FindClass("android/graphics/Rect");
ro.l = env->GetFieldID(rect, "left", "I");
ro.t = env->GetFieldID(rect, "top", "I");
ro.r = env->GetFieldID(rect, "right", "I");
ro.b = env->GetFieldID(rect, "bottom", "I");
jclass point = env->FindClass("android/graphics/Point");
po.x = env->GetFieldID(point, "x", "I");
po.y = env->GetFieldID(point, "y", "I");
}
int register_android_view_Surface(JNIEnv* env)
{
int err;
err = AndroidRuntime::registerNativeMethods(env, kSurfaceSessionClassPathName,
gSurfaceSessionMethods, NELEM(gSurfaceSessionMethods));
err |= AndroidRuntime::registerNativeMethods(env, kSurfaceClassPathName,
gSurfaceMethods, NELEM(gSurfaceMethods));
return err;
}
};
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