diff options
Diffstat (limited to 'src/lib/openjp2/openjpeg.h')
| -rw-r--r-- | src/lib/openjp2/openjpeg.h | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/src/lib/openjp2/openjpeg.h b/src/lib/openjp2/openjpeg.h index 2888e4d1..f36286eb 100644 --- a/src/lib/openjp2/openjpeg.h +++ b/src/lib/openjp2/openjpeg.h @@ -1341,9 +1341,12 @@ OPJ_API OPJ_BOOL OPJ_CALLCONV opj_read_header(opj_stream_t *p_stream, * * This function should be called after opj_read_header(). * - * Normally all the components are decoded. This call enables to restrict - * the set of decoded components to the specified indices. - * Note that neither the MCT transform nor JP2 channel transformatios will be applied. + * This function enables to restrict the set of decoded components to the + * specified indices. + * Note that the current implementation (apply_color_transforms == OPJ_FALSE) + * is such that neither the multi-component transform at codestream level, + * nor JP2 channel transformations will be applied. + * Consequently the indices are relative to the codestream. * * Note: opj_decode_tile_data() should not be used together with opj_set_decoded_components(). * @@ -1352,12 +1355,17 @@ OPJ_API OPJ_BOOL OPJ_CALLCONV opj_read_header(opj_stream_t *p_stream, * @param comps_indices Array of numcomps values representing the indices * of the components to decode (relative to the * codestream, starting at 0) + * @param apply_color_transforms Whether multi-component transform at codestream level + * or JP2 channel transformations should be applied. + * Currently this parameter should be set to OPJ_FALSE. + * Setting it to OPJ_TRUE will result in an error. * * @return OPJ_TRUE in case of success. */ OPJ_API OPJ_BOOL OPJ_CALLCONV opj_set_decoded_components(opj_codec_t *p_codec, OPJ_UINT32 numcomps, - const OPJ_UINT32* comps_indices); + const OPJ_UINT32* comps_indices, + OPJ_BOOL apply_color_transforms); /** * Sets the given area to be decoded. This function should be called right after opj_read_header and before any tile header reading. |