Change HTJ2K_COMPRESSOR chunk size to 32 lines

Signed-off-by: Pierre-Anthony Lemieux <pal@palemieux.com>

Author: palemieux

src/lib/OpenEXR/ImfCompression.cpp

@@ -178,8 +178,8 @@ static const CompressionDesc IdToDesc[] = {
         false),
     CompressionDesc (
         "htj2k",
-        "High-Throughput JPEG 2000 (OpenJPH, 256 lines)",
-        256,
+        "High-Throughput JPEG 2000 (OpenJPH, 32 lines)",
+        32,
         true,
         false),
 };

src/lib/OpenEXR/ImfCompressor.cpp

@@ -338,7 +338,7 @@ newCompressor (Compression c, size_t maxScanLineSize, const Header& hdr)
 
         case HTJ2K_COMPRESSION:
 
-            return new HTCompressor (hdr, static_cast<int> (maxScanLineSize), 256);
+            return new HTCompressor (hdr, static_cast<int> (maxScanLineSize), 32);
 
         default: break;
     }

src/lib/OpenEXRCore/compression.c

@@ -227,7 +227,7 @@ int exr_compression_lines_per_chunk (exr_compression_t comptype)
         case EXR_COMPRESSION_B44A:
         case EXR_COMPRESSION_DWAA: linePerChunk = 32; break;
         case EXR_COMPRESSION_DWAB: linePerChunk = 256; break;
-        case EXR_COMPRESSION_HTJ2K: linePerChunk = 256; break;
+        case EXR_COMPRESSION_HTJ2K: linePerChunk = 32; break;
         case EXR_COMPRESSION_LAST_TYPE:
         default:
             /* ERROR CONDITION */

website/OpenEXRFileLayout.rst

@@ -697,7 +697,7 @@ per block depends on how the pixel data are compressed:
    * - ``DWAB_COMPRESSION``
      - 256
    * - ``HTJ2K_COMPRESSION``
-     - 256
+     - 32
 
 Each scan line block has a y coordinate of type ``int``. The block's y
 coordinate is equal to the pixel space y coordinate of the top scan line