The ICM_DECOMPRESSEX_END message is sent to a video decompression driver to have it clean up after decompressing.
Returns ICERR_OK if successful. Otherwise, returns an error number.
The driver should free any resources allocated for ICM_DECOMPRESSEX_BEGIN.
The ICM_DECOMPRESSEX_BEGIN and ICM_DECOMPRESSEX_END messages do not nest. If your driver receives ICM_DECOMPRESSEX_BEGIN before decompression is stopped with ICM_DECOMPRESSEX_END, it should restart decompression with new parameters.