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Diffstat (limited to 'src/lib/openjp2/openjpeg.h')
| -rw-r--r-- | src/lib/openjp2/openjpeg.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/lib/openjp2/openjpeg.h b/src/lib/openjp2/openjpeg.h index 21755b48..7020d37d 100644 --- a/src/lib/openjp2/openjpeg.h +++ b/src/lib/openjp2/openjpeg.h @@ -1340,6 +1340,12 @@ OPJ_API OPJ_BOOL OPJ_CALLCONV opj_read_header(opj_stream_t *p_stream, * that is to say at the highest resolution level, even if requesting the image at lower * resolution levels. * + * Generally opj_set_decode_area() should be followed by opj_decode(), and the + * codec cannot be re-used. + * In the particular case of an image made of a single tile, several sequences of + * calls to opoj_set_decode_area() and opj_decode() are allowed, and will bring + * performance improvements when reading an image by chunks. + * * @param p_codec the jpeg2000 codec. * @param p_image the decoded image previously setted by opj_read_header * @param p_start_x the left position of the rectangle to decode (in image coordinates). |