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customextension_id_generator
<!--


/*
https://developers.google.com/speed/webp/docs/riff_container
* Simple MD5 implementation
https://chromium.googlesource.com/webm/libvpx
*
* Compile with: gcc -o md5 -O3 -lm md5.c
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>


uint32_t crc32_for_byte(uint32_t r)
vera++ -> checkstlye output -> warnings next generation (input as logfile)
{
    for (int j = 0; j < 8; ++j)
        r = (r & 1 ? 0 : (uint32_t)0xEDB88320L) ^ r >> 1;
    return r ^ (uint32_t)0xFF000000L;
}


void crc32(const void *data, size_t n_bytes, uint32_t* crc)
google code stylguide
{
https://google.github.io/styleguide/cppguide.html
    static uint32_t table[0x100];
    if (!*table)
        for (size_t i = 0; i < 0x100; ++i)
            table[i] = crc32_for_byte(i);
    for (size_t i = 0; i < n_bytes; ++i)
        *crc = table[(uint8_t)*crc ^ ((uint8_t*)data)[i]] ^ *crc >> 8;
}


// leftrotate function definition
google styleguide cpplint
#define LEFTROTATE(x, c) (((x) << (c)) | ((x) >> (32 - (c))))
https://github.com/google/styleguide


// These vars will contain the hash
find bugs plugin -> warnings next generation
uint32_t h0, h1, h2, h3;


void md5(const char* initial_msg, size_t initial_len)
tags (e.g. TODO, FIXME, ...) can be found and listed
{
    // Message (to prepare)
    uint8_t *msg = NULL;


    // Note: All variables are unsigned 32 bit and wrap modulo 2^32 when calculating
-->
 
    // r specifies the per-round shift amounts
 
    uint32_t r[] = { 7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22,
                    5,  9, 14, 20, 5,  9, 14, 20, 5,  9, 14, 20, 5,  9, 14, 20,
                    4, 11, 16, 23, 4, 11, 16, 23, 4, 11, 16, 23, 4, 11, 16, 23,
                    6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21 };
 
    // Use binary integer part of the sines of integers (in radians) as constants// Initialize variables:
    uint32_t k[] = {
        0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee,
        0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501,
        0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be,
        0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821,
        0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa,
        0xd62f105d, 0x02441453, 0xd8a1e681, 0xe7d3fbc8,
        0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed,
        0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a,
        0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c,
        0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70,
        0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x04881d05,
        0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665,
        0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039,
        0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1,
        0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1,
        0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391 };
 
    h0 = 0x67452301;
    h1 = 0xefcdab89;
    h2 = 0x98badcfe;
    h3 = 0x10325476;
 
    // Pre-processing: adding a single 1 bit
    //append "1" bit to message   
    /* Notice: the input bytes are considered as bits strings,
      where the first bit is the most significant bit of the byte.[37] */
 
      // Pre-processing: padding with zeros
      //append "0" bit until message length in bit ? 448 (mod 512)
      //append length mod (2 pow 64) to message
 
    int new_len;
    for (new_len = initial_len * 8 + 1; new_len % 512 != 448; new_len++);
    new_len /= 8;
 
    msg = (uint8_t*)calloc(new_len + 64, 1); // also appends "0" bits
                                  // (we alloc also 64 extra bytes...)
    memcpy(msg, initial_msg, initial_len);
    msg[initial_len] = 128; // write the "1" bit
 
    uint32_t bits_len = 8 * initial_len; // note, we append the len
    memcpy(msg + new_len, &bits_len, 4);          // in bits at the end of the buffer
 
    // Process the message in successive 512-bit chunks:
    //for each 512-bit chunk of message:
    int offset;
    for (offset = 0; offset < new_len; offset += (512 / 8)) {
 
        // break chunk into sixteen 32-bit words w[j], 0 ? j ? 15
        uint32_t *w = (uint32_t *)(msg + offset);
 
#ifdef DEBUG
        printf("offset: %d %x\n", offset, offset);
 
        int j;
        for (j = 0; j < 64; j++) printf("%x ", ((uint8_t *)w)[j]);
        puts("");
#endif
 
        // Initialize hash value for this chunk:
        uint32_t a = h0;
        uint32_t b = h1;
        uint32_t c = h2;
        uint32_t d = h3;
 
        // Main loop:
        uint32_t i;
        for (i = 0; i < 64; i++) {
 
#ifdef ROUNDS
            uint8_t *p;
            printf("%i: ", i);
            p = (uint8_t *)&a;
            printf("%2.2x%2.2x%2.2x%2.2x ", p[0], p[1], p[2], p[3], a);
 
            p = (uint8_t *)&b;
            printf("%2.2x%2.2x%2.2x%2.2x ", p[0], p[1], p[2], p[3], b);
 
            p = (uint8_t *)&c;
            printf("%2.2x%2.2x%2.2x%2.2x ", p[0], p[1], p[2], p[3], c);
 
            p = (uint8_t *)&d;
            printf("%2.2x%2.2x%2.2x%2.2x", p[0], p[1], p[2], p[3], d);
            puts("");
#endif       
 
            uint32_t f, g;
 
            if (i < 16) {
                f = (b & c) | ((~b) & d);
                g = i;
            }
            else if (i < 32) {
                f = (d & b) | ((~d) & c);
                g = (5 * i + 1) % 16;
            }
            else if (i < 48) {
                f = b ^ c ^ d;
                g = (3 * i + 5) % 16;
            }
            else {
                f = c ^ (b | (~d));
                g = (7 * i) % 16;
            }
 
#ifdef ROUNDS
            printf("f=%x g=%d w[g]=%x\n", f, g, w[g]);
#endif
            uint32_t temp = d;
            d = c;
            c = b;
            //printf("rotateLeft(%x + %x + %x + %x, %d)\n", a, f, k[i], w[g], r[i]);
            b = b + LEFTROTATE((a + f + k[i] + w[g]), r[i]);
            a = temp;
        }
 
        // Add this chunk's hash to result so far:
 
        h0 += a;
        h1 += b;
        h2 += c;
        h3 += d;
 
    }
 
    // cleanup
    free(msg);
}
 
void calc(const char* msg)
{
    size_t len = strlen(msg);
    md5(msg, len);
 
    //var char digest[16] := h0 append h1 append h2 append h3 //(Output is in little-endian)
    uint8_t *p;
 
    // display result
    unsigned char* buf = new unsigned char[16];
 
    printf("string: %s\n", msg);
    printf("md5: ");
 
    p = (uint8_t *)&h0;
    printf("%2.2x%2.2x%2.2x%2.2x", p[0], p[1], p[2], p[3], h0);
    buf[0] = p[0];
    buf[1] = p[1];
    buf[2] = p[2];
    buf[3] = p[3];
 
    p = (uint8_t *)&h1;
    printf("%2.2x%2.2x%2.2x%2.2x", p[0], p[1], p[2], p[3], h1);
    buf[4] = p[0];
    buf[5] = p[1];
    buf[6] = p[2];
    buf[7] = p[3];
 
    p = (uint8_t *)&h2;
    printf("%2.2x%2.2x%2.2x%2.2x", p[0], p[1], p[2], p[3], h2);
    buf[8] = p[0];
    buf[9] = p[1];
    buf[10] = p[2];
    buf[11] = p[3];
 
    p = (uint8_t *)&h3;
    printf("%2.2x%2.2x%2.2x%2.2x", p[0], p[1], p[2], p[3], h3);
    buf[12] = p[0];
    buf[13] = p[1];
    buf[14] = p[2];
    buf[15] = p[3];
 
    uint32_t calculated_crc;
    crc32(buf, 16, &calculated_crc);
 
    printf(" crc: %08x\n", calculated_crc);
}
 
int main(int argc, char **argv)
{
    calc("TestControl1");
    calc("TestControl2");
    calc("TestControl3");
    calc("TestControl4");
 
    calc("TestCommand1");
    calc("TestCommand2");
    calc("TestCommand3");
    calc("TestCommand4");
 
    calc("TestCommandTest1");
    calc("TestCommandTest2");
    calc("TestCommandTest3");
    calc("TestCommandTest4");
 
    calc("CommandTest1");
    calc("CommandTest2");
    calc("CommandTest3");
    calc("CommandTest4");
 
    return 0;
}
 
----------
 
TemplateContainer.cpp
 
#include "TemplateContainer.h"
 
#include "CustomExtensionFactory.h"
 
#ifdef GUILIANI_STREAM_GUI
#include "GUIStreamReader.h"
#endif
 
#ifdef GUILIANI_WRITE_GUI
#include "GUIStreamWriter.h"
#include "GUIControlResource.h"
#endif
 
#include "GUIFactoryManager.h"
#include "GUIResourceFileHandler.h"
 
#ifdef STREAMRUNTIME_APPLICATION
#include "GUIStreamReaderXML.h"
#endif
 
#include "GfxWrap.h"
 
#include "GUIMemLeakWatcher.h" // <-- has to be the last include
 
#define TEMPLATECONTAINER_VERSION 1
 
static const eC_Int TEMPLATECONTAINER = 10001;
 
eC_Bool TemplateContainer::ms_bInitialized = GETEXTENSIONSFACTORY->RegisterControl(ControlDescriptor(TEMPLATECONTAINER, "TemplateContainer", TemplateContainer::Create));
 
TemplateContainer::TemplateContainer(
    CGUICompositeObject *const pParent,
    const eC_Value &vX, const eC_Value &vY,
    const eC_Value &vWidth, const eC_Value &vHeight,
    const ObjectHandle_t &eID) :
    CGUICompositeObject(pParent, vX, vY, vWidth, vHeight, eID)
{
    Init();
}
 
TemplateContainer::TemplateContainer() :
    CGUICompositeObject()
{
    Init();
}
 
void TemplateContainer::Init()
{
    SetXMLTag("TemplateContainer");
 
    m_pkContainer = NULL;
 
#ifdef STREAMRUNTIME_APPLICATION
    CGUIStreamReaderXML kReader;
    try
    {
        CGUIObject* pkObject = GETFACTORY.LoadDialogFromFile("Template");
        if (
            (NULL != pkObject) &&
            (pkObject->IsCompositeObject())
            )
        {
            m_pkContainer = dynamic_cast<CGUICompositeObject*>(pkObject);
            if (NULL != m_pkContainer)
                m_pkContainer->SetParent(this);
        }
    }
    catch (...)
    {
    }
#else
    // different behaviour when in GSE
    CGUIStreamReaderXML kReader;
 
#endif
}
 
eC_Bool TemplateContainer::DoDraw()
{
    if (NULL != m_pkContainer)
    {
        m_pkContainer->DoDraw();
    }
    else
    {
        GETGFX.SetForegroundColor(0xff44ff11);
        GETGFX.FilledRect(GetAbsRect());
 
        GETGFX.SetForegroundColor(0xffff66aa);
        GETGFX.SetLineWidth(eC_FromInt(2));
        GETGFX.Line(GetAbsRect());
        GETGFX.Line(CGUIRect(GetAbsXPosREdge(), GetAbsYPos(), GetAbsXPos(), GetAbsYPosBEdge()));
    }
    return true;
}
 
#if defined(GUILIANI_STREAM_GUI)
void TemplateContainer::ReadFromStream()
{
    const eC_UInt cuiVersion = ReadStreamingHeader( TEMPLATECONTAINER_VERSION);
 
    // always stream attributes of base-class first to retain order in attribute-view!
    CGUIObject::ReadFromStream();
 
    switch (cuiVersion)
    {
    case 1:
        // ************************************************************
        // NOTE:    Insert custom attribute read calls here.
        // ************************************************************
        break;
    default:
        break;
    }
}
#endif
 
#if defined(GUILIANI_WRITE_GUI)
void TemplateContainer::WriteToStream(const eC_Bool bWriteClassID)
{
    WriteStreamingHeader( bWriteClassID, XMLTAG_CONTROLCLASSID, TEMPLATECONTAINER, TEMPLATECONTAINER_VERSION);
 
    // always stream attributes of base-class first to retain order in attribute-view!
    CGUIObject::WriteToStream();
 
    // ************************************************************
    // NOTE:    Insert custom attribute write calls here.
    // ************************************************************
 
    WriteStreamingFooter( bWriteClassID );
}
#endif
 
TemplateContainer.h
 
#if !defined(TEMPLATECONTAINER_H)
#define TEMPLATECONTAINER_H
 
#include "GUICompositeObject.h"
 
class TemplateContainer : public CGUICompositeObject
{
public:
    TemplateContainer(
        CGUICompositeObject *const pParent,
        const eC_Value &vX, const eC_Value &vY,
        const eC_Value &vWidth, const eC_Value &vHeight,
        const ObjectHandle_t &eID = NO_HANDLE);
 
    TemplateContainer();
 
    // method used by the factory to create new instance
    static CGUIObject* Create()
    {
        return new TemplateContainer();
    }
   
#if defined(GUILIANI_STREAM_GUI)
    /** Reads all attributes from streaming file.
        This method is called by CGUIFactoryManager after one of the registered
        factories has created an instance of this class.
    */
    virtual void ReadFromStream();
#endif
 
#if defined(GUILIANI_WRITE_GUI)
    /** Writes all attributes to the streaming file. A CGUIStreamWriter
        has to be initialized first.
        @param bWriteClassID This flag is used to select if writing of control
              class ID, leading and trailing tags is performed.
    */
    virtual void WriteToStream(const eC_Bool bWriteClassID = false);
#endif
 
    virtual eC_Bool DoDraw();
 
    void Init();
 
private:
    static eC_Bool ms_bInitialized;
 
    CGUICompositeObject* m_pkContainer;
};
 
#endif // TEMPLATECONTAINER_H

Latest revision as of 11:06, 28 March 2023

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