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Refectoring ConvertImage.cpp
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ronnyldo committed Jun 1, 2018
1 parent a2f1aba commit 63e12f4
Showing 1 changed file with 121 additions and 94 deletions.
215 changes: 121 additions & 94 deletions ConvertImage.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -9,120 +9,147 @@ static const std::string base64_chars =

static inline bool is_base64( unsigned char c ) {

return (isalnum(c) || (c == '+') || (c == '/'));
return (isalnum(c) || (c == '+') || (c == '/'));
}

std::string ImagemConverter::base64_encode(uchar const* bytes_to_encode, unsigned int in_len) {
std::string ret;
int i = 0;
int j = 0;
unsigned char char_array_3[3];
unsigned char char_array_4[4];

while (in_len--) {
char_array_3[i++] = *(bytes_to_encode++);
if (i == 3) {
char_array_4[0] = (char_array_3[0] & 0xfc) >> 2;
char_array_4[1] = ((char_array_3[0] & 0x03) << 4) + ((char_array_3[1] & 0xf0) >> 4);
char_array_4[2] = ((char_array_3[1] & 0x0f) << 2) + ((char_array_3[2] & 0xc0) >> 6);
char_array_4[3] = char_array_3[2] & 0x3f;

for (i = 0; (i <4); i++)
ret += base64_chars[char_array_4[i]];
i = 0;
}
}

if (i)
{
for (j = i; j < 3; j++)
char_array_3[j] = '\0';

char_array_4[0] = (char_array_3[0] & 0xfc) >> 2;
char_array_4[1] = ((char_array_3[0] & 0x03) << 4) + ((char_array_3[1] & 0xf0) >> 4);
char_array_4[2] = ((char_array_3[1] & 0x0f) << 2) + ((char_array_3[2] & 0xc0) >> 6);
char_array_4[3] = char_array_3[2] & 0x3f;

for (j = 0; (j < i + 1); j++)
ret += base64_chars[char_array_4[j]];

while ((i++ < 3))
ret += '=';

}

return ret;

std::string ret;

int i = 0;
int j = 0;
unsigned char char_array_3[3];
unsigned char char_array_4[4];

while (in_len--) {

char_array_3[i++] = *(bytes_to_encode++);
if (i == 3) {

char_array_4[0] = (char_array_3[0] & 0xfc) >> 2;
char_array_4[1] = ((char_array_3[0] & 0x03) << 4) + ((char_array_3[1] & 0xf0) >> 4);
char_array_4[2] = ((char_array_3[1] & 0x0f) << 2) + ((char_array_3[2] & 0xc0) >> 6);
char_array_4[3] = char_array_3[2] & 0x3f;

for (i = 0; (i <4); i++) {
ret += base64_chars[char_array_4[i]];

}
i = 0;
}
}

if (i) {

for (j = i; j < 3; j++) {

char_array_3[j] = '\0';
}

char_array_4[0] = (char_array_3[0] & 0xfc) >> 2;
char_array_4[1] = ((char_array_3[0] & 0x03) << 4) + ((char_array_3[1] & 0xf0) >> 4);
char_array_4[2] = ((char_array_3[1] & 0x0f) << 2) + ((char_array_3[2] & 0xc0) >> 6);
char_array_4[3] = char_array_3[2] & 0x3f;

for (j = 0; (j < i + 1); j++) {

ret += base64_chars[char_array_4[j]];
}
while ((i++ < 3)) {

ret += '=';
}
}

return ret;

}

std::string ImagemConverter::base64_decode(std::string const& encoded_string) {
int in_len = encoded_string.size();
int i = 0;
int j = 0;
int in_ = 0;
unsigned char char_array_4[4], char_array_3[3];
std::string ret;

while (in_len-- && (encoded_string[in_] != '=') && is_base64(encoded_string[in_])) {
char_array_4[i++] = encoded_string[in_]; in_++;
if (i == 4) {
for (i = 0; i < 4; i++)
char_array_4[i] = base64_chars.find(char_array_4[i]);

char_array_3[0] = (char_array_4[0] << 2) + ((char_array_4[1] & 0x30) >> 4);
char_array_3[1] = ((char_array_4[1] & 0xf) << 4) + ((char_array_4[2] & 0x3c) >> 2);
char_array_3[2] = ((char_array_4[2] & 0x3) << 6) + char_array_4[3];

for (i = 0; (i < 3); i++)
ret += char_array_3[i];
i = 0;
}
}

if (i) {
for (j = i; j < 4; j++)
char_array_4[j] = 0;

for (j = 0; j < 4; j++)
char_array_4[j] = base64_chars.find(char_array_4[j]);

char_array_3[0] = (char_array_4[0] << 2) + ((char_array_4[1] & 0x30) >> 4);
char_array_3[1] = ((char_array_4[1] & 0xf) << 4) + ((char_array_4[2] & 0x3c) >> 2);
char_array_3[2] = ((char_array_4[2] & 0x3) << 6) + char_array_4[3];

for (j = 0; (j < i - 1); j++) ret += char_array_3[j];
}

return ret;

int in_len = encoded_string.size();
int i = 0;
int j = 0;
int in_ = 0;
unsigned char char_array_4[4], char_array_3[3];
std::string ret;

while (in_len-- && (encoded_string[in_] != '=') && is_base64(encoded_string[in_])) {

char_array_4[i++] = encoded_string[in_]; in_++;

if (i == 4) {

for (i = 0; i < 4; i++) {

char_array_4[i] = base64_chars.find(char_array_4[i]);
}

char_array_3[0] = (char_array_4[0] << 2) + ((char_array_4[1] & 0x30) >> 4);
char_array_3[1] = ((char_array_4[1] & 0xf) << 4) + ((char_array_4[2] & 0x3c) >> 2);
char_array_3[2] = ((char_array_4[2] & 0x3) << 6) + char_array_4[3];

for (i = 0; (i < 3); i++) {

ret += char_array_3[i];
}

i = 0;
}
}

if (i) {

for (j = i; j < 4; j++) {

char_array_4[j] = 0;
}

for (j = 0; j < 4; j++) {

char_array_4[j] = base64_chars.find(char_array_4[j]);
}

char_array_3[0] = (char_array_4[0] << 2) + ((char_array_4[1] & 0x30) >> 4);
char_array_3[1] = ((char_array_4[1] & 0xf) << 4) + ((char_array_4[2] & 0x3c) >> 2);
char_array_3[2] = ((char_array_4[2] & 0x3) << 6) + char_array_4[3];

for (j = 0; (j < i - 1); j++) {

ret += char_array_3[j];
}
}

return ret;
}

string ImagemConverter::mat2str(const Mat& m)
{
string ImagemConverter::mat2str(const Mat& m) {

int params[3] = {0};
params[0] = CV_IMWRITE_JPEG_QUALITY;
params[1] = 100;
int params[3] = {0};
params[0] = CV_IMWRITE_JPEG_QUALITY;
params[1] = 100;

vector<uchar> buf;
bool code = cv::imencode(".jpg", m, buf, std::vector<int>(params, params+2) );
uchar* result = reinterpret_cast<uchar*> (&buf[0]);
vector<uchar> buf;
bool code = cv::imencode(".jpg", m, buf, std::vector<int>(params, params+2) );
uchar* result = reinterpret_cast<uchar*> (&buf[0]);

return base64_encode(result, buf.size());
return base64_encode(result, buf.size());

}



Mat ImagemConverter::str2mat(const string& s)
{
// Decode data
string decoded_string = base64_decode(s);
vector<uchar> data(decoded_string.begin(), decoded_string.end());
Mat ImagemConverter::str2mat(const string& s) {

// Decode data
string decoded_string = base64_decode(s);
vector<uchar> data(decoded_string.begin(), decoded_string.end());

cv::Mat img = imdecode(data, IMREAD_UNCHANGED);
return img;
cv::Mat img = imdecode(data, IMREAD_UNCHANGED);
return img;
}

ImagemConverter::~ImagemConverter() {

// TODO Auto-generated destructor stub
}

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