* image-codecs: list InkSet and ExtraSamples on TiffPage
* image-codecs: TiffPage InkSet and ExtraSamples as enums
* image-codecs: InkSet::InkNames, and Invalid for undefined tag values
zune-jpeg also holds every coefficient beside its output when an 8-bit
sequential frame's first scan lacks some of its components: no row is
finished until the scans that bring the others. jpeg_info now reads the
first scan's component count and reports these as held_coefficients
(was progressive_coefficients). The #12473 map rewritten with one
component per scan was admitted at 12.6 GB without this, and
OOM-killed in a 14 GB cgroup.
Co-Authored-By: Νύξ (Nyx, AI) 🌑 <nyx@despotak.is>
zune-jpeg keeps every coefficient of an 8-bit progressive frame (SOF2)
beside its output: 2 bytes per sample, per component at its sampling.
That is 9.85 GB for a 48,000 x 34,200 4:4:4 file, more than the decoded
image. JpegInfo::progressive_coefficients reports them from the frame
header, so a caller can admit the decode against its real peak.
Co-Authored-By: Νύξ (Nyx, AI) 🌑 <nyx@despotak.is>
For storytold/photocraft#12473: PhotoCraft lifts its 2^30 px JPEG cap
only after admitting the decode against free memory, and for that it
needs the frame before decoding. jpeg_info reads it from the markers
alone: the stored size, the layout decode returns, and
whole_coefficients, set when decode hands the file to craft-jpeg
(arithmetic-coded, lossless or 12-bit frames), whose working set is
several times the decoded image. None without a frame of 1, 3 or 4
components.
This was part of storytold/photocraft#12604 until
storytold/photocraft#14236 moved the codecs here.
Co-Authored-By: Νύξ (Nyx, AI) 🌑 <nyx@despotak.is>
Dylan M. Taylor
aiongg
ChristosandΝύξ 🌑