clear things to an initial state. Good to call, eg, before seeking */

Returns the specified item's value. * \param pIndex Index of the item * \return The value of the item

Calculate the CRC over a section of data. We can only pass as * much data to this routine as the largest single buffer size. We * also check that

This function frees the memory associated with a single info struct. * Normally, one would use either png_destroy_read_struct() or * png_destroy_wri

This does the right thing based on the bit_depth field of the * png_struct, interpreting values as 8-bit or 16-bit. While the result * is nominally

Manage the read buffer; this simply reallocates the buffer if it is not small * enough (or if it is not allocated). The routine returns a pointer to

Turn on 16 bit byte swapping */

Called by user to write a row of image data */

Hadamard+Scale transform for some strange reason, breaking up the function into two blocks, strHSTdec1 and strHSTdec seems to work faster **/

Hadamard+Scale transform for some strange reason, breaking up the function into two blocks, strHSTenc1 and strHSTenc seems to work faster **/

assumes the FPU is in round mode! */

pcm==NULL indicates we just want the pending samples, no more */

Allocate a FIBITMAP @param header_only If TRUE, allocate a 'header only' FIBITMAP, otherwise allocate a full FIBITMAP @param fit Image type @param wid

lookup a renderer by glyph format in the library's list */

lookup a renderer by glyph format in the library's list */

Get the next element of a given element. * \param pIterator The given element. * \return The next element. */

Get the resolution from the TIFF and fill the dib with universal units */

------------------------------------------------------------------------------ Decodes the next Huffman code from bit-stream. FillBitWindow(br) needs

Solve A * x = b, where b is a column vector. This is more efficient than computing the inverse in one-shot cases.

Transpose back and store

Returns the size of the internal buffer.

Returns true if cursor is pointing at a valid position.

Some useful macros:

Return true if there is pending output rows ready.