106 lines
2.8 KiB
C++
106 lines
2.8 KiB
C++
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/*
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* Copyright 2011, 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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#include <pthread.h>
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extern "C" {
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#include "liblzf/lzf.h"
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}
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#include "gltrace_context.h"
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namespace android {
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namespace gltrace {
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using ::android::gl_hooks_t;
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static pthread_key_t sTLSKey = -1;
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static pthread_once_t sPthreadOnceKey = PTHREAD_ONCE_INIT;
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void createTLSKey() {
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pthread_key_create(&sTLSKey, NULL);
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}
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GLTraceContext *getGLTraceContext() {
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return (GLTraceContext*) pthread_getspecific(sTLSKey);
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}
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void setGLTraceContext(GLTraceContext *c) {
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pthread_setspecific(sTLSKey, c);
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}
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void initContext(unsigned version, gl_hooks_t *hooks) {
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pthread_once(&sPthreadOnceKey, createTLSKey);
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GLTraceContext *context = new GLTraceContext();
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context->hooks = hooks;
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setGLTraceContext(context);
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}
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void releaseContext() {
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GLTraceContext *c = getGLTraceContext();
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if (c != NULL) {
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delete c;
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setGLTraceContext(NULL);
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}
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}
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GLTraceContext::GLTraceContext() {
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fbcontents = fbcompressed = NULL;
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fbcontentsSize = 0;
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}
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void GLTraceContext::resizeFBMemory(unsigned minSize) {
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if (fbcontentsSize >= minSize) {
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return;
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}
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if (fbcontents != NULL) {
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free(fbcontents);
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free(fbcompressed);
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}
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fbcontents = malloc(minSize);
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fbcompressed = malloc(minSize);
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fbcontentsSize = minSize;
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}
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/** obtain a pointer to the compressed framebuffer image */
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void GLTraceContext::getCompressedFB(void **fb, unsigned *fbsize, unsigned *fbwidth,
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unsigned *fbheight) {
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int viewport[4] = {};
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hooks->gl.glGetIntegerv(GL_VIEWPORT, viewport);
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unsigned fbContentsSize = viewport[2] * viewport[3] * 4;
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resizeFBMemory(fbContentsSize);
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//TODO: On eglSwapBuffer, read FB0. For glDraw calls, read currently
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// bound FB.
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//hooks->gl.glGetIntegerv(GL_FRAMEBUFFER_BINDING, &bound_fb);
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//hooks->gl.glBindFramebuffer(GL_FRAMEBUFFER, 0);
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hooks->gl.glReadPixels(viewport[0], viewport[1], viewport[2], viewport[3],
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GL_RGBA, GL_UNSIGNED_BYTE, fbcontents);
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*fbsize = lzf_compress(fbcontents, fbContentsSize, fbcompressed, fbContentsSize);
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*fb = fbcompressed;
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*fbwidth = viewport[2];
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*fbheight = viewport[3];
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}
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}; // namespace gltrace
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}; // namespace android
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