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Removing deadcode blocks, redudant variable & initializing all vars in constructor

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Adding &31 to bit shift in order to silince coverity BAD_SHIFT defect

add default_stripes_count const
This commit is contained in:
kalistratovag 2015-07-03 20:11:58 +03:00
parent ca692b9804
commit e2fe0ca835
1 changed files with 12 additions and 17 deletions
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29
modules/videoio/src/cap_mjpeg_encoder.cpp
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@ -433,7 +433,6 @@ private:
std::vector<unsigned> data;
int bits_free;
unsigned m_pos;
bool m_is_full;
unsigned m_data_len;
};
@ -443,7 +442,7 @@ class mjpeg_buffer_keeper
public:
mjpeg_buffer_keeper()
{
m_last_bit_len = 0;
reset();
}
mjpeg_buffer& operator[](int i)
@ -496,7 +495,7 @@ public:
}
else
{
memcpy(&m_output_buffer[current_pos], buffer.get_data(), sizeof(buffer.get_data()[0])*(buffer.get_len() -1 ));
memcpy(&m_output_buffer[current_pos], buffer.get_data(), sizeof(buffer.get_data()[0])*(buffer.get_len() - 1 ));
m_data_len += buffer.get_len() - 1;
currval = buffer.get_data()[buffer.get_len() - 1];
}
@ -505,27 +504,20 @@ public:
{
for(unsigned i = 0; i < buffer.get_len() - 1; ++i)
{
if( bits <= 0 )
{
currval |= ((unsigned)buffer.get_data()[i] >> -bits);
currval |= ( (unsigned)buffer.get_data()[i] >> (31 & (-bits)) );
m_output_buffer[m_data_len++] = currval;
m_output_buffer[m_data_len++] = currval;
currval = (bits < 0) ? (buffer.get_data()[i] << (bits + 32)) : 0;
}
else
{
currval |= (buffer.get_data()[i] << bits);
}
currval = buffer.get_data()[i] << (bits + 32);
}
currval |= ((unsigned)buffer.get_data()[buffer.get_len() - 1] >> -bits);
currval |= ( (unsigned)buffer.get_data()[buffer.get_len() - 1] >> (31 & (-bits)) );
if( (buffer.get_bits_free() == 32 ? 0 : buffer.get_bits_free()) <= -bits)
if( buffer.get_bits_free() <= -bits)
{
m_output_buffer[m_data_len++] = currval;
currval = (bits < 0) ? (buffer.get_data()[buffer.get_len() - 1] << (bits + 32)) : 0;
currval = buffer.get_data()[buffer.get_len() - 1] << (bits + 32);
}
}
@ -1534,7 +1526,7 @@ public:
{
if(height*width > min_pixels_count)
{
stripes_count = 4;
stripes_count = default_stripes_count;
}
}
else
@ -1735,8 +1727,11 @@ private:
const short (&fdct_qtab)[2][64];
const uchar* cat_table;
int stripes_count;
static const int default_stripes_count;
};
const int MjpegEncoder::default_stripes_count = 4;
void MotionJpegWriter::writeFrameData( const uchar* data, int step, int colorspace, int input_channels )
{
//double total_cvt = 0, total_dct = 0;