diff options
Diffstat (limited to 'src/openjpeg_image.cc')
| -rw-r--r-- | src/openjpeg_image.cc | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/openjpeg_image.cc b/src/openjpeg_image.cc index cf9063a9..31889566 100644 --- a/src/openjpeg_image.cc +++ b/src/openjpeg_image.cc @@ -85,6 +85,32 @@ OpenJPEGImage::OpenJPEGImage (OpenJPEGImage const & other) */ OpenJPEGImage::OpenJPEGImage (Size size) { + create (size); +} + +/** @param data_16 XYZ/RGB image data in packed 16:16:16, 48bpp with + * the 2-byte value for each component stored as little-endian. + */ +OpenJPEGImage::OpenJPEGImage (uint8_t const * data_16, dcp::Size size, int stride) +{ + create (size); + + int jn = 0; + for (int y = 0; y < size.height; ++y) { + uint16_t const * p = reinterpret_cast<uint16_t const *> (data_16 + y * stride); + for (int x = 0; x < size.width; ++x) { + /* Truncate 16-bit to 12-bit */ + _opj_image->comps[0].data[jn] = *p++ >> 4; + _opj_image->comps[1].data[jn] = *p++ >> 4; + _opj_image->comps[2].data[jn] = *p++ >> 4; + ++jn; + } + } +} + +void +OpenJPEGImage::create (Size size) +{ opj_image_cmptparm_t cmptparm[3]; for (int i = 0; i < 3; ++i) { |