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Diffstat (limited to 'drivers/webp/dec/vp8li.h')
| -rw-r--r-- | drivers/webp/dec/vp8li.h | 135 |
1 files changed, 0 insertions, 135 deletions
diff --git a/drivers/webp/dec/vp8li.h b/drivers/webp/dec/vp8li.h deleted file mode 100644 index 9313bdc0af..0000000000 --- a/drivers/webp/dec/vp8li.h +++ /dev/null @@ -1,135 +0,0 @@ -// Copyright 2012 Google Inc. All Rights Reserved. -// -// Use of this source code is governed by a BSD-style license -// that can be found in the COPYING file in the root of the source -// tree. An additional intellectual property rights grant can be found -// in the file PATENTS. All contributing project authors may -// be found in the AUTHORS file in the root of the source tree. -// ----------------------------------------------------------------------------- -// -// Lossless decoder: internal header. -// -// Author: Skal (pascal.massimino@gmail.com) -// Vikas Arora(vikaas.arora@gmail.com) - -#ifndef WEBP_DEC_VP8LI_H_ -#define WEBP_DEC_VP8LI_H_ - -#include <string.h> // for memcpy() -#include "./webpi.h" -#include "../utils/bit_reader.h" -#include "../utils/color_cache.h" -#include "../utils/huffman.h" - -#ifdef __cplusplus -extern "C" { -#endif - -typedef enum { - READ_DATA = 0, - READ_HDR = 1, - READ_DIM = 2 -} VP8LDecodeState; - -typedef struct VP8LTransform VP8LTransform; -struct VP8LTransform { - VP8LImageTransformType type_; // transform type. - int bits_; // subsampling bits defining transform window. - int xsize_; // transform window X index. - int ysize_; // transform window Y index. - uint32_t *data_; // transform data. -}; - -typedef struct { - int color_cache_size_; - VP8LColorCache color_cache_; - VP8LColorCache saved_color_cache_; // for incremental - - int huffman_mask_; - int huffman_subsample_bits_; - int huffman_xsize_; - uint32_t *huffman_image_; - int num_htree_groups_; - HTreeGroup *htree_groups_; - HuffmanCode *huffman_tables_; -} VP8LMetadata; - -typedef struct VP8LDecoder VP8LDecoder; -struct VP8LDecoder { - VP8StatusCode status_; - VP8LDecodeState state_; - VP8Io *io_; - - const WebPDecBuffer *output_; // shortcut to io->opaque->output - - uint32_t *pixels_; // Internal data: either uint8_t* for alpha - // or uint32_t* for BGRA. - uint32_t *argb_cache_; // Scratch buffer for temporary BGRA storage. - - VP8LBitReader br_; - int incremental_; // if true, incremental decoding is expected - VP8LBitReader saved_br_; // note: could be local variables too - int saved_last_pixel_; - - int width_; - int height_; - int last_row_; // last input row decoded so far. - int last_pixel_; // last pixel decoded so far. However, it may - // not be transformed, scaled and - // color-converted yet. - int last_out_row_; // last row output so far. - - VP8LMetadata hdr_; - - int next_transform_; - VP8LTransform transforms_[NUM_TRANSFORMS]; - // or'd bitset storing the transforms types. - uint32_t transforms_seen_; - - uint8_t *rescaler_memory; // Working memory for rescaling work. - WebPRescaler *rescaler; // Common rescaler for all channels. -}; - -//------------------------------------------------------------------------------ -// internal functions. Not public. - -struct ALPHDecoder; // Defined in dec/alphai.h. - -// in vp8l.c - -// Decodes image header for alpha data stored using lossless compression. -// Returns false in case of error. -int VP8LDecodeAlphaHeader(struct ALPHDecoder* const alph_dec, - const uint8_t* const data, size_t data_size); - -// Decodes *at least* 'last_row' rows of alpha. If some of the initial rows are -// already decoded in previous call(s), it will resume decoding from where it -// was paused. -// Returns false in case of bitstream error. -int VP8LDecodeAlphaImageStream(struct ALPHDecoder* const alph_dec, - int last_row); - -// Allocates and initialize a new lossless decoder instance. -VP8LDecoder* VP8LNew(void); - -// Decodes the image header. Returns false in case of error. -int VP8LDecodeHeader(VP8LDecoder* const dec, VP8Io* const io); - -// Decodes an image. It's required to decode the lossless header before calling -// this function. Returns false in case of error, with updated dec->status_. -int VP8LDecodeImage(VP8LDecoder* const dec); - -// Resets the decoder in its initial state, reclaiming memory. -// Preserves the dec->status_ value. -void VP8LClear(VP8LDecoder* const dec); - -// Clears and deallocate a lossless decoder instance. -void VP8LDelete(VP8LDecoder* const dec); - -//------------------------------------------------------------------------------ - -#ifdef __cplusplus -} // extern "C" -#endif - -#endif /* WEBP_DEC_VP8LI_H_ */ |