Unit JdAPIstd

Classes

Functions

jpeg_finish_output - Finish up after an output pass in buffered-image mode.
jpeg_read_raw_data - Alternate entry point to read raw data.
jpeg_read_scanlines - Read some scanlines of data from the JPEG decompressor.
jpeg_start_decompress - Decompression initialization.

Types

Constants

Variables


Functions


function jpeg_finish_output (cinfo : j_decompress_ptr) : boolean;

Finish up after an output pass in buffered-image mode. Returns FALSE if suspended. The return value need be inspected only if a suspending data source is used. } {GLOBAL

function jpeg_read_raw_data (cinfo : j_decompress_ptr; data : JSAMPIMAGE; max_lines : JDIMENSION) : JDIMENSION;

Alternate entry point to read raw data. Processes exactly one iMCU row per call, unless suspended. } {GLOBAL

Alternate entry point to read raw data. Processes exactly one iMCU row per call, unless suspended. } {GLOBAL


function jpeg_read_scanlines (cinfo : j_decompress_ptr; scanlines : JSAMPARRAY; max_lines : JDIMENSION) : JDIMENSION;

Read some scanlines of data from the JPEG decompressor. The return value will be the number of lines actually read. This may be less than the number requested in several cases, including bottom of image, data source suspension, and operating modes that emit multiple scanlines at a time. Note: we warn about excess calls to jpeg_read_scanlines() since this likely signals an application programmer error. However, an oversize buffer (max_lines > scanlines remaining) is not an error. } {GLOBAL

Read some scanlines of data from the JPEG decompressor. The return value will be the number of lines actually read. This may be less than the number requested in several cases, including bottom of image, data source suspension, and operating modes that emit multiple scanlines at a time. Note: we warn about excess calls to jpeg_read_scanlines() since this likely signals an application programmer error. However, an oversize buffer (max_lines > scanlines remaining) is not an error. } {GLOBAL


function jpeg_start_decompress (cinfo : j_decompress_ptr) : boolean;

Decompression initialization. jpeg_read_header must be completed before calling this. If a multipass operating mode was selected, this will do all but the last pass, and thus may take a great deal of time. Returns FALSE if suspended. The return value need be inspected only if a suspending data source is used. } {GLOBAL

Decompression initialization. jpeg_read_header must be completed before calling this. If a multipass operating mode was selected, this will do all but the last pass, and thus may take a great deal of time. Returns FALSE if suspended. The return value need be inspected only if a suspending data source is used. } {GLOBAL


Types


Constants


Variables