Set by the client if its custom get_buffer() callback can be called
synchronously from another thread, which allows faster multithreaded decoding.
draw_horiz_band() will be called from other threads regardless of this setting.
Ignored if the default get_buffer() is used.
- encoding: Set by user.
- decoding: Set by user.
Set by the client if its custom get_buffer() callback can be called synchronously from another thread, which allows faster multithreaded decoding. draw_horiz_band() will be called from other threads regardless of this setting. Ignored if the default get_buffer() is used. - encoding: Set by user. - decoding: Set by user.