/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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// Provides a webviewchromium glue layer adapter from the internal Android
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// GL Functor data types into the types the chromium stack expects, and back.
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#define LOG_TAG "webviewchromium_plat_support"
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#include "draw_gl.h"
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#include <jni.h>
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#include <private/hwui/DrawGlInfo.h>
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#include <utils/Functor.h>
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#include <utils/Log.h>
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#include "functor_utils.h"
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#define NELEM(x) ((int) (sizeof(x) / sizeof((x)[0])))
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#define COMPILE_ASSERT(expr, err) \
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__unused static const char (err)[(expr) ? 1 : -1] = "";
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namespace android {
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namespace {
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AwDrawGLFunction* g_aw_drawgl_function = NULL;
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class DrawGLFunctor : public Functor {
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public:
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explicit DrawGLFunctor(jlong view_context) : view_context_(view_context) {}
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~DrawGLFunctor() override {}
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// Functor
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status_t operator ()(int what, void* data) override {
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using uirenderer::DrawGlInfo;
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if (!g_aw_drawgl_function) {
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ALOGE("Cannot draw: no DrawGL Function installed");
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return DrawGlInfo::kStatusDone;
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}
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AwDrawGLInfo aw_info;
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aw_info.version = kAwDrawGLInfoVersion;
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switch (what) {
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case DrawGlInfo::kModeDraw: {
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aw_info.mode = AwDrawGLInfo::kModeDraw;
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DrawGlInfo* gl_info = reinterpret_cast<DrawGlInfo*>(data);
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// Map across the input values.
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aw_info.clip_left = gl_info->clipLeft;
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aw_info.clip_top = gl_info->clipTop;
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aw_info.clip_right = gl_info->clipRight;
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aw_info.clip_bottom = gl_info->clipBottom;
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aw_info.width = gl_info->width;
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aw_info.height = gl_info->height;
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aw_info.is_layer = gl_info->isLayer;
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COMPILE_ASSERT(NELEM(aw_info.transform) == NELEM(gl_info->transform),
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mismatched_transform_matrix_sizes);
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for (int i = 0; i < NELEM(aw_info.transform); ++i) {
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aw_info.transform[i] = gl_info->transform[i];
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}
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break;
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}
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case DrawGlInfo::kModeProcess:
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aw_info.mode = AwDrawGLInfo::kModeProcess;
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break;
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case DrawGlInfo::kModeProcessNoContext:
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aw_info.mode = AwDrawGLInfo::kModeProcessNoContext;
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break;
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case DrawGlInfo::kModeSync:
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aw_info.mode = AwDrawGLInfo::kModeSync;
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break;
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default:
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ALOGE("Unexpected DrawGLInfo type %d", what);
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return DrawGlInfo::kStatusDone;
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}
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// Invoke the DrawGL method.
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g_aw_drawgl_function(view_context_, &aw_info, NULL);
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return DrawGlInfo::kStatusDone;
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}
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private:
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intptr_t view_context_;
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};
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jlong CreateGLFunctor(JNIEnv*, jclass, jlong view_context) {
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RaiseFileNumberLimit();
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return reinterpret_cast<jlong>(new DrawGLFunctor(view_context));
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}
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void DestroyGLFunctor(JNIEnv*, jclass, jlong functor) {
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delete reinterpret_cast<DrawGLFunctor*>(functor);
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}
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void SetChromiumAwDrawGLFunction(JNIEnv*, jclass, jlong draw_function) {
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g_aw_drawgl_function = reinterpret_cast<AwDrawGLFunction*>(draw_function);
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}
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const char kClassName[] = "com/android/webview/chromium/DrawGLFunctor";
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const JNINativeMethod kJniMethods[] = {
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{ "nativeCreateGLFunctor", "(J)J",
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reinterpret_cast<void*>(CreateGLFunctor) },
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{ "nativeDestroyGLFunctor", "(J)V",
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reinterpret_cast<void*>(DestroyGLFunctor) },
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{ "nativeSetChromiumAwDrawGLFunction", "(J)V",
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reinterpret_cast<void*>(SetChromiumAwDrawGLFunction) },
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};
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} // namespace
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void RegisterDrawGLFunctor(JNIEnv* env) {
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jclass clazz = env->FindClass(kClassName);
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LOG_ALWAYS_FATAL_IF(!clazz, "Unable to find class '%s'", kClassName);
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int res = env->RegisterNatives(clazz, kJniMethods, NELEM(kJniMethods));
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LOG_ALWAYS_FATAL_IF(res < 0, "register native methods failed: res=%d", res);
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}
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} // namespace android
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