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      1 /*
      2  * Copyright 2011, The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *     http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef __GLTRACE_CONTEXT_H_
     18 #define __GLTRACE_CONTEXT_H_
     19 
     20 #include <map>
     21 #include <pthread.h>
     22 #include <utils/KeyedVector.h>
     23 
     24 #include "hooks.h"
     25 #include "gltrace_transport.h"
     26 
     27 namespace android {
     28 namespace gltrace {
     29 
     30 using ::android::gl_hooks_t;
     31 
     32 enum FBBinding {CURRENTLY_BOUND_FB, FB0};
     33 
     34 class GLTraceState;
     35 
     36 class ElementArrayBuffer {
     37     GLvoid *mBuf;
     38     GLsizeiptr mSize;
     39 
     40 public:
     41     ElementArrayBuffer():mBuf(NULL), mSize(0) {}
     42     ElementArrayBuffer(GLvoid *buf, GLsizeiptr size);
     43     ~ElementArrayBuffer();
     44 
     45     void updateSubBuffer(GLintptr offset, const GLvoid* data, GLsizeiptr size);
     46     GLvoid *getBuffer();
     47     GLsizeiptr getSize();
     48 };
     49 
     50 /** GL Trace Context info associated with each EGLContext */
     51 class GLTraceContext {
     52     int mId;                    /* unique context id */
     53     GLTraceState *mState;       /* parent GL Trace state (for per process GL Trace State Info) */
     54 
     55     void *fbcontents;           /* memory area to read framebuffer contents */
     56     void *fbcompressed;         /* destination for lzf compressed framebuffer */
     57     unsigned fbcontentsSize;    /* size of fbcontents & fbcompressed buffers */
     58 
     59     BufferedOutputStream *mBufferedOutputStream; /* stream where trace info is sent */
     60 
     61     /* list of element array buffers in use. */
     62     DefaultKeyedVector<GLuint, ElementArrayBuffer*> mElementArrayBuffers;
     63 
     64     void resizeFBMemory(unsigned minSize);
     65 public:
     66     gl_hooks_t *hooks;
     67 
     68     GLTraceContext(int id, GLTraceState *state, BufferedOutputStream *stream);
     69     int getId();
     70     GLTraceState *getGlobalTraceState();
     71     void getCompressedFB(void **fb, unsigned *fbsize,
     72                             unsigned *fbwidth, unsigned *fbheight,
     73                             FBBinding fbToRead);
     74 
     75     // Methods to work with element array buffers
     76     void bindBuffer(GLuint bufferId, GLvoid *data, GLsizeiptr size);
     77     void getBuffer(GLuint bufferId, GLvoid **data, GLsizeiptr *size);
     78     void updateBufferSubData(GLuint bufferId, GLintptr offset, GLvoid *data, GLsizeiptr size);
     79     void deleteBuffer(GLuint bufferId);
     80 
     81     void traceGLMessage(GLMessage *msg);
     82 };
     83 
     84 /** Per process trace state. */
     85 class GLTraceState {
     86     int mTraceContextIds;
     87     TCPStream *mStream;
     88     std::map<EGLContext, GLTraceContext*> mPerContextState;
     89 
     90     /* Options controlling additional data to be collected on
     91        certain trace calls. */
     92     bool mCollectFbOnEglSwap;
     93     bool mCollectFbOnGlDraw;
     94     bool mCollectTextureDataOnGlTexImage;
     95     pthread_rwlock_t mTraceOptionsRwLock;
     96 
     97     /* helper methods to get/set values using provided lock for mutual exclusion. */
     98     void safeSetValue(bool *ptr, bool value, pthread_rwlock_t *lock);
     99     bool safeGetValue(bool *ptr, pthread_rwlock_t *lock);
    100 public:
    101     GLTraceState(TCPStream *stream);
    102     ~GLTraceState();
    103 
    104     GLTraceContext *createTraceContext(int version, EGLContext c);
    105     GLTraceContext *getTraceContext(EGLContext c);
    106 
    107     TCPStream *getStream();
    108 
    109     /* Methods to set trace options. */
    110     void setCollectFbOnEglSwap(bool en);
    111     void setCollectFbOnGlDraw(bool en);
    112     void setCollectTextureDataOnGlTexImage(bool en);
    113 
    114     /* Methods to retrieve trace options. */
    115     bool shouldCollectFbOnEglSwap();
    116     bool shouldCollectFbOnGlDraw();
    117     bool shouldCollectTextureDataOnGlTexImage();
    118 };
    119 
    120 void setupTraceContextThreadSpecific(GLTraceContext *context);
    121 GLTraceContext *getGLTraceContext();
    122 void releaseContext();
    123 
    124 };
    125 };
    126 
    127 #endif
    128