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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/gl/android/surface_texture.h"
#include <utility>
#include "base/android/jni_android.h"
#include "base/check.h"
#include "base/compiler_specific.h"
#include "base/debug/crash_logging.h"
#include "ui/gl/android/scoped_a_native_window.h"
#include "ui/gl/android/scoped_java_surface.h"
#include "ui/gl/android/surface_texture_listener.h"
#include "ui/gl/gl_bindings.h"
// Must come after all headers that specialize FromJniType() / ToJniType().
#include "ui/gl/gl_jni_headers/ChromeSurfaceTexture_jni.h"
#ifndef GL_ANGLE_texture_storage_external
#define GL_ANGLE_texture_storage_external 1
#define GL_TEXTURE_NATIVE_ID_ANGLE 0x3481
#endif /* GL_ANGLE_texture_storage_external */
namespace gl {
scoped_refptr<SurfaceTexture> SurfaceTexture::Create(int texture_id) {
int native_id = texture_id;
// ANGLE emulates texture IDs so query the native ID of the texture.
if (texture_id != 0 &&
gl::g_current_gl_driver->ext.b_GL_ANGLE_texture_external_update) {
GLint prev_texture = 0;
glGetIntegerv(GL_TEXTURE_BINDING_EXTERNAL_OES, &prev_texture);
glBindTexture(GL_TEXTURE_EXTERNAL_OES, texture_id);
glGetTexParameteriv(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_NATIVE_ID_ANGLE,
&native_id);
glBindTexture(GL_TEXTURE_EXTERNAL_OES, prev_texture);
}
JNIEnv* env = base::android::AttachCurrentThread();
return new SurfaceTexture(
Java_ChromeSurfaceTexture_Constructor(env, native_id));
}
SurfaceTexture::SurfaceTexture(
const base::android::ScopedJavaLocalRef<jobject>& j_surface_texture) {
j_surface_texture_.Reset(j_surface_texture);
}
SurfaceTexture::~SurfaceTexture() {
ReleaseBackBuffers();
}
void SurfaceTexture::SetFrameAvailableCallback(
base::RepeatingClosure callback) {
JNIEnv* env = base::android::AttachCurrentThread();
Java_ChromeSurfaceTexture_setNativeListener(
env, j_surface_texture_,
reinterpret_cast<intptr_t>(
new SurfaceTextureListener(std::move(callback), false)));
}
void SurfaceTexture::SetFrameAvailableCallbackOnAnyThread(
base::RepeatingClosure callback) {
JNIEnv* env = base::android::AttachCurrentThread();
Java_ChromeSurfaceTexture_setNativeListener(
env, j_surface_texture_,
reinterpret_cast<intptr_t>(
new SurfaceTextureListener(std::move(callback), true)));
}
void SurfaceTexture::UpdateTexImage() {
static auto* kCrashKey = base::debug::AllocateCrashKeyString(
"inside_surface_texture_update_tex_image",
base::debug::CrashKeySize::Size256);
base::debug::ScopedCrashKeyString scoped_crash_key(kCrashKey, "1");
JNIEnv* env = base::android::AttachCurrentThread();
Java_ChromeSurfaceTexture_updateTexImage(env, j_surface_texture_);
// Notify ANGLE that the External texture binding has changed
if (gl::g_current_gl_driver->ext.b_GL_ANGLE_texture_external_update)
glInvalidateTextureANGLE(GL_TEXTURE_EXTERNAL_OES);
}
void SurfaceTexture::GetTransformMatrix(base::span<float, 16> mtx) {
JNIEnv* env = base::android::AttachCurrentThread();
base::android::ScopedJavaLocalRef<jfloatArray> jmatrix(
env, env->NewFloatArray(16));
Java_ChromeSurfaceTexture_getTransformMatrix(env, j_surface_texture_,
jmatrix);
jfloat* elements = env->GetFloatArrayElements(jmatrix.obj(), nullptr);
for (int i = 0; i < 16; ++i) {
// SAFETY: required from Android API.
mtx[i] = static_cast<float>(UNSAFE_BUFFERS(elements[i]));
}
env->ReleaseFloatArrayElements(jmatrix.obj(), elements, JNI_ABORT);
}
void SurfaceTexture::AttachToGLContext() {
// ANGLE emulates texture IDs so query the native ID of the texture.
int texture_id = 0;
if (gl::g_current_gl_driver->ext.b_GL_ANGLE_texture_external_update) {
glGetTexParameteriv(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_NATIVE_ID_ANGLE,
&texture_id);
} else {
glGetIntegerv(GL_TEXTURE_BINDING_EXTERNAL_OES, &texture_id);
}
DCHECK(texture_id);
JNIEnv* env = base::android::AttachCurrentThread();
Java_ChromeSurfaceTexture_attachToGLContext(env, j_surface_texture_,
texture_id);
// Notify ANGLE that the External texture binding has changed
if (gl::g_current_gl_driver->ext.b_GL_ANGLE_texture_external_update) {
glInvalidateTextureANGLE(GL_TEXTURE_EXTERNAL_OES);
}
}
void SurfaceTexture::DetachFromGLContext() {
JNIEnv* env = base::android::AttachCurrentThread();
Java_ChromeSurfaceTexture_detachFromGLContext(env, j_surface_texture_);
}
ScopedANativeWindow SurfaceTexture::CreateSurface() {
ScopedJavaSurface surface(this);
return ScopedANativeWindow(surface);
}
void SurfaceTexture::ReleaseBackBuffers() {
JNIEnv* env = base::android::AttachCurrentThread();
Java_ChromeSurfaceTexture_destroy(env, j_surface_texture_);
}
void SurfaceTexture::SetDefaultBufferSize(int width, int height) {
JNIEnv* env = base::android::AttachCurrentThread();
Java_ChromeSurfaceTexture_setDefaultBufferSize(env, j_surface_texture_, width,
height);
}
} // namespace gl
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