Copies the histograms and computes its bit_cost.

Find the best 'out' histogram for each of the 'in' histograms. Note: we assume that out[]->bit_cost_ is already up-to-date.

Find the best 'out' histogram for each of the 'in' histograms. At call-time, 'out' contains the histograms of the clusters. Note: we assume that out[]

Swap two histogram pointers.

Does one inverse transform.

Does two inverse transforms.

Total size of a list of images.

Write out the given list of images into 'dst'.

For pixels in 'rect', replace those pixels in 'dst' that are same as 'src' by transparent pixels. Returns true if at least one pixel gets modified.

Initialize all params.

Initialize all params.

Initialize multi/single-thread worker

Initialize multi/single-thread worker

Returns true if the current frame is a key-frame.

Calculate the penalty incurred if we encode given frame as a key frame instead of a sub-frame.

Convert a linear value 'v' to YUV_FIX+2 fixed-point precision U/V value, suitable for RGBToU/V calls.

Convert a linear value 'v' to YUV_FIX+2 fixed-point precision U/V value, suitable for RGBToU/V calls.

Note: Expects "enc->palette_" to be set properly.

Note: Expects "enc->palette_" to be set properly.

Cleans up 'mux' by removing any unnecessary chunks.

Implement a Lehmer random number generator with a multiplicative constant of 48271 and a modulo constant of 2^31 - 1.

Quantize every component of the difference between the actual pixel value and its prediction to a multiple of a quantization (a power of 2, not larger

Adjusts pixel values of image with given maximum error.

Creates a new Frame if 'actual_size' is within bounds and 'mem' contains enough data ('min_size') to parse the payload. Returns PARSE_OK on success wi

Returns the table width of the next 2nd level table. count is the histogram of bit lengths for the remaining symbols, len is the code length of the ne

Returns the table width of the next 2nd level table. count is the histogram of bit lengths for the remaining symbols, len is the code length of the ne

Given a HistogramSet 'set', the mapping of clusters 'cluster_mapping' and the current assignment of the cells in 'symbols', merge the clusters and ass

Change the population counts in a way that the consequent Huffman tree compression, especially its RLE-part, give smaller output.

Change the population counts in a way that the consequent Huffman tree compression, especially its RLE-part, give smaller output.

Convert a single-frame animation to a non-animated image if appropriate. TODO(urvang): Can we pick one of the two heuristically (based on frame rectan

Pack R/G/B/A results into 16b output.