Finalize the Huffman cost based on streak numbers and length type (<3 or >=3)

Returns the bit-cost for coding the skip probability.

Returns the bit-cost for coding the skip probability.

To be called last.

To be called last.

Generates candidates for a given dispose method given pre-filled sub-frame 'params'.

input pixels are int8_t

return the cost array corresponding to the surrounding prediction modes.

return the cost array corresponding to the surrounding prediction modes.

Returns false in case of memory error.

Returns false in case of memory error.

See section 13-2: https://datatracker.ietf.org/doc/html/rfc6386#section-13.2

Returns reverse(reverse(key, len) + 1, len), where reverse(key, len) is the bit-wise reversal of the len least significant bits of key.

Returns reverse(reverse(key, len) + 1, len), where reverse(key, len) is the bit-wise reversal of the len least significant bits of key.

input/output is uint8_t

Stores the difference between the pixel and its prediction in "out". In case of a lossy encoding, updates the source image to avoid propagating the de

Given previous and current canvas, picks the optimal rectangle for the current frame based on 'is_lossless' and other parameters. Assumes that the ini

Picks optimal frame rectangle for both lossless and lossy compression. The initial guess for frame rectangles will be the full canvas.

Predictor11: select.

Update the cost diff and combo of a pair of histograms. This needs to be called when the the histograms have been merged with a third one.

Performs out = a + b, computing the cost C(a+b) - C(a) - C(b) while comparing to the threshold value 'cost_threshold'. The score returned is Score = C

Resets the pointers of the histograms to point to the bit buffer in the set.

Returns the total size of the VP8LHistogramSet.

Main decoding loop

Main decoding loop

Does one or two inverse transforms.

Row-processing for the special case when alpha data contains only one transform (color indexing), and trivial non-green literals.

Row-processing for the special case when alpha data contains only one transform (color indexing), and trivial non-green literals.

Returns true if the frame covers the full canvas.

Check that webp_csp_mode is within the bounds of WEBP_CSP_MODE. Convert to an integer to handle both the unsigned/signed enum cases without the need f

Check that webp_csp_mode is within the bounds of WEBP_CSP_MODE. Convert to an integer to handle both the unsigned/signed enum cases without the need f

This intrinsics version makes gcc-4.6.3 crash during Load4x??() compilation (register alloc, probably). The variants somewhat mitigate the problem, bu

reads 8 rows across a vertical edge.

input: 8 bytes ABCDEFGH -> output: A0B0C0D0E0F0G0H0

input: 8 bytes ABCDEFGH -> output: A0E0B0F0C0G0D0H0

Load and replicate the U/V samples

Load and replicate the U/V samples