| Метод | Описание | |
|---|---|---|
| IsLastPass ( ) : bool | ||
| MustCallPassStartup ( ) : bool | ||
| finish_pass ( ) : void |
Finish up at end of pass.
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| jpeg_comp_master ( jpeg_compress_struct cinfo, bool transcode_only ) : System | ||
| pass_startup ( ) : void |
Special start-of-pass hook. This is called by jpeg_write_scanlines if call_pass_startup is true. In single-pass processing, we need this hook because we don't want to write frame/scan headers during jpeg_start_compress; we want to let the application write COM markers etc. between jpeg_start_compress and the jpeg_write_scanlines loop. In multi-pass processing, this routine is not used.
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| prepare_for_pass ( ) : void |
Per-pass setup. This is called at the beginning of each pass. We determine which modules will be active during this pass and give them appropriate start_pass calls. We also set is_last_pass to indicate whether any more passes will be required.
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| Метод | Описание | |
|---|---|---|
| per_scan_setup ( ) : void |
Do computations that are needed before processing a JPEG scan cinfo.comps_in_scan and cinfo.cur_comp_info[] are already set
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| prepare_for_huff_opt_pass ( ) : bool | ||
| prepare_for_main_pass ( ) : void | ||
| prepare_for_output_pass ( ) : void | ||
| select_scan_parameters ( ) : void |
| public jpeg_comp_master ( jpeg_compress_struct cinfo, bool transcode_only ) : System | ||
| cinfo | jpeg_compress_struct | |
| transcode_only | bool | |
| Результат | System | |