diff options
| author | Even Rouault <even.rouault@spatialys.com> | 2017-09-01 16:30:29 +0200 |
|---|---|---|
| committer | Even Rouault <even.rouault@spatialys.com> | 2017-09-01 16:30:29 +0200 |
| commit | f9e9942330f476b66ac4a35d0ae521200878f343 (patch) | |
| tree | 49cd4ab4a3d05d148a03052fdb856b2c58a88412 /src/lib/openjp2/dwt.h | |
| parent | aa7198146b995fe2993ce24f5715057b7da0386d (diff) | |
Sub-tile decoding: only allocate tile component buffer of the needed dimension
Instead of being the full tile size.
* Use a sparse array mechanism to store code-blocks and intermediate stages of
IDWT.
* IDWT, DC level shift and MCT stages are done just on that smaller array.
* Improve copy of tile component array to final image, by saving an intermediate
buffer.
* For full-tile decoding at reduced resolution, only allocate the tile buffer to
the reduced size, instead of the full-resolution size.
Diffstat (limited to 'src/lib/openjp2/dwt.h')
| -rw-r--r-- | src/lib/openjp2/dwt.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/lib/openjp2/dwt.h b/src/lib/openjp2/dwt.h index a66ac71e..4f63e524 100644 --- a/src/lib/openjp2/dwt.h +++ b/src/lib/openjp2/dwt.h @@ -63,7 +63,7 @@ OPJ_BOOL opj_dwt_encode(opj_tcd_tilecomp_t * tilec); /** Inverse 5-3 wavelet transform in 2-D. Apply a reversible inverse DWT transform to a component of an image. -@param tcd TCD handle +@param p_tcd TCD handle @param tilec Tile component information (current tile) @param numres Number of resolution levels to decode */ @@ -93,7 +93,7 @@ OPJ_BOOL opj_dwt_encode_real(opj_tcd_tilecomp_t * tilec); /** Inverse 9-7 wavelet transform in 2-D. Apply an irreversible inverse DWT transform to a component of an image. -@param tcd TCD handle +@param p_tcd TCD handle @param tilec Tile component information (current tile) @param numres Number of resolution levels to decode */ |