1338 lines
44 KiB
C
1338 lines
44 KiB
C
/*
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* Bink video decoder
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* Copyright (c) 2009 Konstantin Shishkov
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* Copyright (C) 2011 Peter Ross <pross@xvid.org>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/imgutils.h"
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#include "avcodec.h"
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#include "dsputil.h"
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#include "binkdata.h"
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#include "binkdsp.h"
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#include "mathops.h"
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#define ALT_BITSTREAM_READER_LE
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#include "get_bits.h"
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#define BINK_FLAG_ALPHA 0x00100000
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#define BINK_FLAG_GRAY 0x00020000
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static VLC bink_trees[16];
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/**
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* IDs for different data types used in old version of Bink video codec
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*/
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enum OldSources {
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BINKB_SRC_BLOCK_TYPES = 0, ///< 8x8 block types
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BINKB_SRC_COLORS, ///< pixel values used for different block types
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BINKB_SRC_PATTERN, ///< 8-bit values for 2-colour pattern fill
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BINKB_SRC_X_OFF, ///< X components of motion value
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BINKB_SRC_Y_OFF, ///< Y components of motion value
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BINKB_SRC_INTRA_DC, ///< DC values for intrablocks with DCT
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BINKB_SRC_INTER_DC, ///< DC values for interblocks with DCT
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BINKB_SRC_INTRA_Q, ///< quantizer values for intrablocks with DCT
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BINKB_SRC_INTER_Q, ///< quantizer values for interblocks with DCT
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BINKB_SRC_INTER_COEFS, ///< number of coefficients for residue blocks
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BINKB_NB_SRC
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};
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static const int binkb_bundle_sizes[BINKB_NB_SRC] = {
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4, 8, 8, 5, 5, 11, 11, 4, 4, 7
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};
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static const int binkb_bundle_signed[BINKB_NB_SRC] = {
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0, 0, 0, 1, 1, 0, 1, 0, 0, 0
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};
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static int32_t binkb_intra_quant[16][64];
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static int32_t binkb_inter_quant[16][64];
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/**
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* IDs for different data types used in Bink video codec
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*/
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enum Sources {
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BINK_SRC_BLOCK_TYPES = 0, ///< 8x8 block types
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BINK_SRC_SUB_BLOCK_TYPES, ///< 16x16 block types (a subset of 8x8 block types)
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BINK_SRC_COLORS, ///< pixel values used for different block types
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BINK_SRC_PATTERN, ///< 8-bit values for 2-colour pattern fill
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BINK_SRC_X_OFF, ///< X components of motion value
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BINK_SRC_Y_OFF, ///< Y components of motion value
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BINK_SRC_INTRA_DC, ///< DC values for intrablocks with DCT
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BINK_SRC_INTER_DC, ///< DC values for interblocks with DCT
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BINK_SRC_RUN, ///< run lengths for special fill block
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BINK_NB_SRC
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};
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/**
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* data needed to decode 4-bit Huffman-coded value
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*/
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typedef struct Tree {
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int vlc_num; ///< tree number (in bink_trees[])
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uint8_t syms[16]; ///< leaf value to symbol mapping
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} Tree;
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#define GET_HUFF(gb, tree) (tree).syms[get_vlc2(gb, bink_trees[(tree).vlc_num].table,\
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bink_trees[(tree).vlc_num].bits, 1)]
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/**
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* data structure used for decoding single Bink data type
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*/
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typedef struct Bundle {
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int len; ///< length of number of entries to decode (in bits)
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Tree tree; ///< Huffman tree-related data
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uint8_t *data; ///< buffer for decoded symbols
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uint8_t *data_end; ///< buffer end
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uint8_t *cur_dec; ///< pointer to the not yet decoded part of the buffer
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uint8_t *cur_ptr; ///< pointer to the data that is not read from buffer yet
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} Bundle;
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/*
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* Decoder context
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*/
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typedef struct BinkContext {
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AVCodecContext *avctx;
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DSPContext dsp;
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BinkDSPContext bdsp;
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AVFrame pic, last;
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int version; ///< internal Bink file version
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int has_alpha;
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int swap_planes;
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Bundle bundle[BINKB_NB_SRC]; ///< bundles for decoding all data types
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Tree col_high[16]; ///< trees for decoding high nibble in "colours" data type
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int col_lastval; ///< value of last decoded high nibble in "colours" data type
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} BinkContext;
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/**
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* Bink video block types
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*/
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enum BlockTypes {
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SKIP_BLOCK = 0, ///< skipped block
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SCALED_BLOCK, ///< block has size 16x16
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MOTION_BLOCK, ///< block is copied from previous frame with some offset
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RUN_BLOCK, ///< block is composed from runs of colours with custom scan order
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RESIDUE_BLOCK, ///< motion block with some difference added
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INTRA_BLOCK, ///< intra DCT block
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FILL_BLOCK, ///< block is filled with single colour
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INTER_BLOCK, ///< motion block with DCT applied to the difference
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PATTERN_BLOCK, ///< block is filled with two colours following custom pattern
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RAW_BLOCK, ///< uncoded 8x8 block
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};
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/**
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* Initialize length length in all bundles.
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*
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* @param c decoder context
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* @param width plane width
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* @param bw plane width in 8x8 blocks
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*/
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static void init_lengths(BinkContext *c, int width, int bw)
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{
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c->bundle[BINK_SRC_BLOCK_TYPES].len = av_log2((width >> 3) + 511) + 1;
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c->bundle[BINK_SRC_SUB_BLOCK_TYPES].len = av_log2((width >> 4) + 511) + 1;
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c->bundle[BINK_SRC_COLORS].len = av_log2(bw*64 + 511) + 1;
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c->bundle[BINK_SRC_INTRA_DC].len =
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c->bundle[BINK_SRC_INTER_DC].len =
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c->bundle[BINK_SRC_X_OFF].len =
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c->bundle[BINK_SRC_Y_OFF].len = av_log2((width >> 3) + 511) + 1;
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c->bundle[BINK_SRC_PATTERN].len = av_log2((bw << 3) + 511) + 1;
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c->bundle[BINK_SRC_RUN].len = av_log2(bw*48 + 511) + 1;
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}
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/**
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* Allocate memory for bundles.
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*
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* @param c decoder context
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*/
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static av_cold void init_bundles(BinkContext *c)
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{
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int bw, bh, blocks;
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int i;
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bw = (c->avctx->width + 7) >> 3;
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bh = (c->avctx->height + 7) >> 3;
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blocks = bw * bh;
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for (i = 0; i < BINKB_NB_SRC; i++) {
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c->bundle[i].data = av_malloc(blocks * 64);
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c->bundle[i].data_end = c->bundle[i].data + blocks * 64;
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}
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}
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/**
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* Free memory used by bundles.
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*
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* @param c decoder context
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*/
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static av_cold void free_bundles(BinkContext *c)
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{
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int i;
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for (i = 0; i < BINKB_NB_SRC; i++)
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av_freep(&c->bundle[i].data);
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}
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/**
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* Merge two consequent lists of equal size depending on bits read.
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*
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* @param gb context for reading bits
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* @param dst buffer where merged list will be written to
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* @param src pointer to the head of the first list (the second lists starts at src+size)
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* @param size input lists size
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*/
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static void merge(GetBitContext *gb, uint8_t *dst, uint8_t *src, int size)
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{
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uint8_t *src2 = src + size;
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int size2 = size;
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do {
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if (!get_bits1(gb)) {
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*dst++ = *src++;
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size--;
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} else {
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*dst++ = *src2++;
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size2--;
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}
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} while (size && size2);
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while (size--)
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*dst++ = *src++;
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while (size2--)
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*dst++ = *src2++;
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}
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/**
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* Read information about Huffman tree used to decode data.
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*
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* @param gb context for reading bits
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* @param tree pointer for storing tree data
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*/
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static void read_tree(GetBitContext *gb, Tree *tree)
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{
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uint8_t tmp1[16], tmp2[16], *in = tmp1, *out = tmp2;
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int i, t, len;
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tree->vlc_num = get_bits(gb, 4);
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if (!tree->vlc_num) {
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for (i = 0; i < 16; i++)
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tree->syms[i] = i;
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return;
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}
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if (get_bits1(gb)) {
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len = get_bits(gb, 3);
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memset(tmp1, 0, sizeof(tmp1));
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for (i = 0; i <= len; i++) {
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tree->syms[i] = get_bits(gb, 4);
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tmp1[tree->syms[i]] = 1;
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}
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for (i = 0; i < 16 && len < 16 - 1; i++)
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if (!tmp1[i])
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tree->syms[++len] = i;
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} else {
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len = get_bits(gb, 2);
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for (i = 0; i < 16; i++)
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in[i] = i;
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for (i = 0; i <= len; i++) {
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int size = 1 << i;
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for (t = 0; t < 16; t += size << 1)
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merge(gb, out + t, in + t, size);
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FFSWAP(uint8_t*, in, out);
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}
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memcpy(tree->syms, in, 16);
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}
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}
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/**
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* Prepare bundle for decoding data.
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*
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* @param gb context for reading bits
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* @param c decoder context
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* @param bundle_num number of the bundle to initialize
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*/
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static void read_bundle(GetBitContext *gb, BinkContext *c, int bundle_num)
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{
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int i;
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if (bundle_num == BINK_SRC_COLORS) {
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for (i = 0; i < 16; i++)
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read_tree(gb, &c->col_high[i]);
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c->col_lastval = 0;
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}
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if (bundle_num != BINK_SRC_INTRA_DC && bundle_num != BINK_SRC_INTER_DC)
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read_tree(gb, &c->bundle[bundle_num].tree);
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c->bundle[bundle_num].cur_dec =
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c->bundle[bundle_num].cur_ptr = c->bundle[bundle_num].data;
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}
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/**
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* common check before starting decoding bundle data
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*
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* @param gb context for reading bits
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* @param b bundle
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* @param t variable where number of elements to decode will be stored
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*/
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#define CHECK_READ_VAL(gb, b, t) \
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if (!b->cur_dec || (b->cur_dec > b->cur_ptr)) \
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return 0; \
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t = get_bits(gb, b->len); \
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if (!t) { \
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b->cur_dec = NULL; \
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return 0; \
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} \
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static int read_runs(AVCodecContext *avctx, GetBitContext *gb, Bundle *b)
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{
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int t, v;
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const uint8_t *dec_end;
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CHECK_READ_VAL(gb, b, t);
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dec_end = b->cur_dec + t;
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if (dec_end > b->data_end) {
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av_log(avctx, AV_LOG_ERROR, "Run value went out of bounds\n");
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return -1;
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}
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if (get_bits1(gb)) {
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v = get_bits(gb, 4);
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memset(b->cur_dec, v, t);
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b->cur_dec += t;
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} else {
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while (b->cur_dec < dec_end)
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*b->cur_dec++ = GET_HUFF(gb, b->tree);
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}
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return 0;
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}
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static int read_motion_values(AVCodecContext *avctx, GetBitContext *gb, Bundle *b)
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{
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int t, sign, v;
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const uint8_t *dec_end;
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CHECK_READ_VAL(gb, b, t);
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dec_end = b->cur_dec + t;
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if (dec_end > b->data_end) {
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av_log(avctx, AV_LOG_ERROR, "Too many motion values\n");
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return -1;
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}
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if (get_bits1(gb)) {
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v = get_bits(gb, 4);
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if (v) {
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sign = -get_bits1(gb);
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v = (v ^ sign) - sign;
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}
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memset(b->cur_dec, v, t);
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b->cur_dec += t;
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} else {
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while (b->cur_dec < dec_end) {
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v = GET_HUFF(gb, b->tree);
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if (v) {
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sign = -get_bits1(gb);
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v = (v ^ sign) - sign;
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}
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*b->cur_dec++ = v;
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}
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}
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return 0;
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}
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static const uint8_t bink_rlelens[4] = { 4, 8, 12, 32 };
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static int read_block_types(AVCodecContext *avctx, GetBitContext *gb, Bundle *b)
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{
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int t, v;
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int last = 0;
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const uint8_t *dec_end;
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CHECK_READ_VAL(gb, b, t);
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dec_end = b->cur_dec + t;
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if (dec_end > b->data_end) {
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av_log(avctx, AV_LOG_ERROR, "Too many block type values\n");
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return -1;
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}
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if (get_bits1(gb)) {
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v = get_bits(gb, 4);
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memset(b->cur_dec, v, t);
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b->cur_dec += t;
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} else {
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while (b->cur_dec < dec_end) {
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v = GET_HUFF(gb, b->tree);
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if (v < 12) {
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last = v;
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*b->cur_dec++ = v;
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} else {
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int run = bink_rlelens[v - 12];
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if (dec_end - b->cur_dec < run)
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return -1;
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memset(b->cur_dec, last, run);
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b->cur_dec += run;
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}
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}
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}
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return 0;
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}
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static int read_patterns(AVCodecContext *avctx, GetBitContext *gb, Bundle *b)
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{
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int t, v;
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const uint8_t *dec_end;
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CHECK_READ_VAL(gb, b, t);
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dec_end = b->cur_dec + t;
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if (dec_end > b->data_end) {
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av_log(avctx, AV_LOG_ERROR, "Too many pattern values\n");
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return -1;
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}
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while (b->cur_dec < dec_end) {
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v = GET_HUFF(gb, b->tree);
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v |= GET_HUFF(gb, b->tree) << 4;
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*b->cur_dec++ = v;
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}
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return 0;
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}
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static int read_colors(GetBitContext *gb, Bundle *b, BinkContext *c)
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{
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int t, sign, v;
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const uint8_t *dec_end;
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CHECK_READ_VAL(gb, b, t);
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dec_end = b->cur_dec + t;
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if (dec_end > b->data_end) {
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av_log(c->avctx, AV_LOG_ERROR, "Too many color values\n");
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return -1;
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}
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if (get_bits1(gb)) {
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c->col_lastval = GET_HUFF(gb, c->col_high[c->col_lastval]);
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v = GET_HUFF(gb, b->tree);
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v = (c->col_lastval << 4) | v;
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if (c->version < 'i') {
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sign = ((int8_t) v) >> 7;
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v = ((v & 0x7F) ^ sign) - sign;
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v += 0x80;
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}
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memset(b->cur_dec, v, t);
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b->cur_dec += t;
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} else {
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while (b->cur_dec < dec_end) {
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c->col_lastval = GET_HUFF(gb, c->col_high[c->col_lastval]);
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v = GET_HUFF(gb, b->tree);
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v = (c->col_lastval << 4) | v;
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if (c->version < 'i') {
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sign = ((int8_t) v) >> 7;
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v = ((v & 0x7F) ^ sign) - sign;
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v += 0x80;
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}
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*b->cur_dec++ = v;
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}
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}
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return 0;
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}
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/** number of bits used to store first DC value in bundle */
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#define DC_START_BITS 11
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static int read_dcs(AVCodecContext *avctx, GetBitContext *gb, Bundle *b,
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int start_bits, int has_sign)
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{
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int i, j, len, len2, bsize, sign, v, v2;
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int16_t *dst = (int16_t*)b->cur_dec;
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int16_t *dst_end =( int16_t*)b->data_end;
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CHECK_READ_VAL(gb, b, len);
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v = get_bits(gb, start_bits - has_sign);
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if (v && has_sign) {
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sign = -get_bits1(gb);
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v = (v ^ sign) - sign;
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}
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if (dst_end - dst < 1)
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return -1;
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*dst++ = v;
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len--;
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for (i = 0; i < len; i += 8) {
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len2 = FFMIN(len - i, 8);
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if (dst_end - dst < len2)
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return -1;
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bsize = get_bits(gb, 4);
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if (bsize) {
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for (j = 0; j < len2; j++) {
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v2 = get_bits(gb, bsize);
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if (v2) {
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sign = -get_bits1(gb);
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v2 = (v2 ^ sign) - sign;
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}
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v += v2;
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*dst++ = v;
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if (v < -32768 || v > 32767) {
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av_log(avctx, AV_LOG_ERROR, "DC value went out of bounds: %d\n", v);
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return -1;
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}
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}
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} else {
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for (j = 0; j < len2; j++)
|
|
*dst++ = v;
|
|
}
|
|
}
|
|
|
|
b->cur_dec = (uint8_t*)dst;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Retrieve next value from bundle.
|
|
*
|
|
* @param c decoder context
|
|
* @param bundle bundle number
|
|
*/
|
|
static inline int get_value(BinkContext *c, int bundle)
|
|
{
|
|
int ret;
|
|
|
|
if (bundle < BINK_SRC_X_OFF || bundle == BINK_SRC_RUN)
|
|
return *c->bundle[bundle].cur_ptr++;
|
|
if (bundle == BINK_SRC_X_OFF || bundle == BINK_SRC_Y_OFF)
|
|
return (int8_t)*c->bundle[bundle].cur_ptr++;
|
|
ret = *(int16_t*)c->bundle[bundle].cur_ptr;
|
|
c->bundle[bundle].cur_ptr += 2;
|
|
return ret;
|
|
}
|
|
|
|
static void binkb_init_bundle(BinkContext *c, int bundle_num)
|
|
{
|
|
c->bundle[bundle_num].cur_dec =
|
|
c->bundle[bundle_num].cur_ptr = c->bundle[bundle_num].data;
|
|
c->bundle[bundle_num].len = 13;
|
|
}
|
|
|
|
static void binkb_init_bundles(BinkContext *c)
|
|
{
|
|
int i;
|
|
for (i = 0; i < BINKB_NB_SRC; i++)
|
|
binkb_init_bundle(c, i);
|
|
}
|
|
|
|
static int binkb_read_bundle(BinkContext *c, GetBitContext *gb, int bundle_num)
|
|
{
|
|
const int bits = binkb_bundle_sizes[bundle_num];
|
|
const int mask = 1 << (bits - 1);
|
|
const int issigned = binkb_bundle_signed[bundle_num];
|
|
Bundle *b = &c->bundle[bundle_num];
|
|
int i, len;
|
|
|
|
CHECK_READ_VAL(gb, b, len);
|
|
if (b->data_end - b->cur_dec < len * (1 + (bits > 8)))
|
|
return -1;
|
|
if (bits <= 8) {
|
|
if (!issigned) {
|
|
for (i = 0; i < len; i++)
|
|
*b->cur_dec++ = get_bits(gb, bits);
|
|
} else {
|
|
for (i = 0; i < len; i++)
|
|
*b->cur_dec++ = get_bits(gb, bits) - mask;
|
|
}
|
|
} else {
|
|
int16_t *dst = (int16_t*)b->cur_dec;
|
|
|
|
if (!issigned) {
|
|
for (i = 0; i < len; i++)
|
|
*dst++ = get_bits(gb, bits);
|
|
} else {
|
|
for (i = 0; i < len; i++)
|
|
*dst++ = get_bits(gb, bits) - mask;
|
|
}
|
|
b->cur_dec = (uint8_t*)dst;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static inline int binkb_get_value(BinkContext *c, int bundle_num)
|
|
{
|
|
int16_t ret;
|
|
const int bits = binkb_bundle_sizes[bundle_num];
|
|
|
|
if (bits <= 8) {
|
|
int val = *c->bundle[bundle_num].cur_ptr++;
|
|
return binkb_bundle_signed[bundle_num] ? (int8_t)val : val;
|
|
}
|
|
ret = *(int16_t*)c->bundle[bundle_num].cur_ptr;
|
|
c->bundle[bundle_num].cur_ptr += 2;
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* Read 8x8 block of DCT coefficients.
|
|
*
|
|
* @param gb context for reading bits
|
|
* @param block place for storing coefficients
|
|
* @param scan scan order table
|
|
* @param quant_matrices quantization matrices
|
|
* @return 0 for success, negative value in other cases
|
|
*/
|
|
static int read_dct_coeffs(GetBitContext *gb, int32_t block[64], const uint8_t *scan,
|
|
const int32_t quant_matrices[16][64], int q)
|
|
{
|
|
int coef_list[128];
|
|
int mode_list[128];
|
|
int i, t, mask, bits, ccoef, mode, sign;
|
|
int list_start = 64, list_end = 64, list_pos;
|
|
int coef_count = 0;
|
|
int coef_idx[64];
|
|
int quant_idx;
|
|
const int32_t *quant;
|
|
|
|
coef_list[list_end] = 4; mode_list[list_end++] = 0;
|
|
coef_list[list_end] = 24; mode_list[list_end++] = 0;
|
|
coef_list[list_end] = 44; mode_list[list_end++] = 0;
|
|
coef_list[list_end] = 1; mode_list[list_end++] = 3;
|
|
coef_list[list_end] = 2; mode_list[list_end++] = 3;
|
|
coef_list[list_end] = 3; mode_list[list_end++] = 3;
|
|
|
|
bits = get_bits(gb, 4) - 1;
|
|
for (mask = 1 << bits; bits >= 0; mask >>= 1, bits--) {
|
|
list_pos = list_start;
|
|
while (list_pos < list_end) {
|
|
if (!(mode_list[list_pos] | coef_list[list_pos]) || !get_bits1(gb)) {
|
|
list_pos++;
|
|
continue;
|
|
}
|
|
ccoef = coef_list[list_pos];
|
|
mode = mode_list[list_pos];
|
|
switch (mode) {
|
|
case 0:
|
|
coef_list[list_pos] = ccoef + 4;
|
|
mode_list[list_pos] = 1;
|
|
case 2:
|
|
if (mode == 2) {
|
|
coef_list[list_pos] = 0;
|
|
mode_list[list_pos++] = 0;
|
|
}
|
|
for (i = 0; i < 4; i++, ccoef++) {
|
|
if (get_bits1(gb)) {
|
|
coef_list[--list_start] = ccoef;
|
|
mode_list[ list_start] = 3;
|
|
} else {
|
|
if (!bits) {
|
|
t = 1 - (get_bits1(gb) << 1);
|
|
} else {
|
|
t = get_bits(gb, bits) | mask;
|
|
sign = -get_bits1(gb);
|
|
t = (t ^ sign) - sign;
|
|
}
|
|
block[scan[ccoef]] = t;
|
|
coef_idx[coef_count++] = ccoef;
|
|
}
|
|
}
|
|
break;
|
|
case 1:
|
|
mode_list[list_pos] = 2;
|
|
for (i = 0; i < 3; i++) {
|
|
ccoef += 4;
|
|
coef_list[list_end] = ccoef;
|
|
mode_list[list_end++] = 2;
|
|
}
|
|
break;
|
|
case 3:
|
|
if (!bits) {
|
|
t = 1 - (get_bits1(gb) << 1);
|
|
} else {
|
|
t = get_bits(gb, bits) | mask;
|
|
sign = -get_bits1(gb);
|
|
t = (t ^ sign) - sign;
|
|
}
|
|
block[scan[ccoef]] = t;
|
|
coef_idx[coef_count++] = ccoef;
|
|
coef_list[list_pos] = 0;
|
|
mode_list[list_pos++] = 0;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (q == -1) {
|
|
quant_idx = get_bits(gb, 4);
|
|
} else {
|
|
quant_idx = q;
|
|
}
|
|
|
|
quant = quant_matrices[quant_idx];
|
|
|
|
block[0] = (block[0] * quant[0]) >> 11;
|
|
for (i = 0; i < coef_count; i++) {
|
|
int idx = coef_idx[i];
|
|
block[scan[idx]] = (block[scan[idx]] * quant[idx]) >> 11;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Read 8x8 block with residue after motion compensation.
|
|
*
|
|
* @param gb context for reading bits
|
|
* @param block place to store read data
|
|
* @param masks_count number of masks to decode
|
|
* @return 0 on success, negative value in other cases
|
|
*/
|
|
static int read_residue(GetBitContext *gb, DCTELEM block[64], int masks_count)
|
|
{
|
|
int coef_list[128];
|
|
int mode_list[128];
|
|
int i, sign, mask, ccoef, mode;
|
|
int list_start = 64, list_end = 64, list_pos;
|
|
int nz_coeff[64];
|
|
int nz_coeff_count = 0;
|
|
|
|
coef_list[list_end] = 4; mode_list[list_end++] = 0;
|
|
coef_list[list_end] = 24; mode_list[list_end++] = 0;
|
|
coef_list[list_end] = 44; mode_list[list_end++] = 0;
|
|
coef_list[list_end] = 0; mode_list[list_end++] = 2;
|
|
|
|
for (mask = 1 << get_bits(gb, 3); mask; mask >>= 1) {
|
|
for (i = 0; i < nz_coeff_count; i++) {
|
|
if (!get_bits1(gb))
|
|
continue;
|
|
if (block[nz_coeff[i]] < 0)
|
|
block[nz_coeff[i]] -= mask;
|
|
else
|
|
block[nz_coeff[i]] += mask;
|
|
masks_count--;
|
|
if (masks_count < 0)
|
|
return 0;
|
|
}
|
|
list_pos = list_start;
|
|
while (list_pos < list_end) {
|
|
if (!(coef_list[list_pos] | mode_list[list_pos]) || !get_bits1(gb)) {
|
|
list_pos++;
|
|
continue;
|
|
}
|
|
ccoef = coef_list[list_pos];
|
|
mode = mode_list[list_pos];
|
|
switch (mode) {
|
|
case 0:
|
|
coef_list[list_pos] = ccoef + 4;
|
|
mode_list[list_pos] = 1;
|
|
case 2:
|
|
if (mode == 2) {
|
|
coef_list[list_pos] = 0;
|
|
mode_list[list_pos++] = 0;
|
|
}
|
|
for (i = 0; i < 4; i++, ccoef++) {
|
|
if (get_bits1(gb)) {
|
|
coef_list[--list_start] = ccoef;
|
|
mode_list[ list_start] = 3;
|
|
} else {
|
|
nz_coeff[nz_coeff_count++] = bink_scan[ccoef];
|
|
sign = -get_bits1(gb);
|
|
block[bink_scan[ccoef]] = (mask ^ sign) - sign;
|
|
masks_count--;
|
|
if (masks_count < 0)
|
|
return 0;
|
|
}
|
|
}
|
|
break;
|
|
case 1:
|
|
mode_list[list_pos] = 2;
|
|
for (i = 0; i < 3; i++) {
|
|
ccoef += 4;
|
|
coef_list[list_end] = ccoef;
|
|
mode_list[list_end++] = 2;
|
|
}
|
|
break;
|
|
case 3:
|
|
nz_coeff[nz_coeff_count++] = bink_scan[ccoef];
|
|
sign = -get_bits1(gb);
|
|
block[bink_scan[ccoef]] = (mask ^ sign) - sign;
|
|
coef_list[list_pos] = 0;
|
|
mode_list[list_pos++] = 0;
|
|
masks_count--;
|
|
if (masks_count < 0)
|
|
return 0;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Copy 8x8 block from source to destination, where src and dst may be overlapped
|
|
*/
|
|
static inline void put_pixels8x8_overlapped(uint8_t *dst, uint8_t *src, int stride)
|
|
{
|
|
uint8_t tmp[64];
|
|
int i;
|
|
for (i = 0; i < 8; i++)
|
|
memcpy(tmp + i*8, src + i*stride, 8);
|
|
for (i = 0; i < 8; i++)
|
|
memcpy(dst + i*stride, tmp + i*8, 8);
|
|
}
|
|
|
|
static int binkb_decode_plane(BinkContext *c, GetBitContext *gb, int plane_idx,
|
|
int is_key, int is_chroma)
|
|
{
|
|
int blk;
|
|
int i, j, bx, by;
|
|
uint8_t *dst, *ref, *ref_start, *ref_end;
|
|
int v, col[2];
|
|
const uint8_t *scan;
|
|
int xoff, yoff;
|
|
LOCAL_ALIGNED_16(DCTELEM, block, [64]);
|
|
LOCAL_ALIGNED_16(int32_t, dctblock, [64]);
|
|
int coordmap[64];
|
|
int ybias = is_key ? -15 : 0;
|
|
int qp;
|
|
|
|
const int stride = c->pic.linesize[plane_idx];
|
|
int bw = is_chroma ? (c->avctx->width + 15) >> 4 : (c->avctx->width + 7) >> 3;
|
|
int bh = is_chroma ? (c->avctx->height + 15) >> 4 : (c->avctx->height + 7) >> 3;
|
|
|
|
binkb_init_bundles(c);
|
|
ref_start = c->pic.data[plane_idx];
|
|
ref_end = c->pic.data[plane_idx] + (bh * c->pic.linesize[plane_idx] + bw) * 8;
|
|
|
|
for (i = 0; i < 64; i++)
|
|
coordmap[i] = (i & 7) + (i >> 3) * stride;
|
|
|
|
for (by = 0; by < bh; by++) {
|
|
for (i = 0; i < BINKB_NB_SRC; i++) {
|
|
if (binkb_read_bundle(c, gb, i) < 0)
|
|
return -1;
|
|
}
|
|
|
|
dst = c->pic.data[plane_idx] + 8*by*stride;
|
|
for (bx = 0; bx < bw; bx++, dst += 8) {
|
|
blk = binkb_get_value(c, BINKB_SRC_BLOCK_TYPES);
|
|
switch (blk) {
|
|
case 0:
|
|
break;
|
|
case 1:
|
|
scan = bink_patterns[get_bits(gb, 4)];
|
|
i = 0;
|
|
do {
|
|
int mode, run;
|
|
|
|
mode = get_bits1(gb);
|
|
run = get_bits(gb, binkb_runbits[i]) + 1;
|
|
|
|
i += run;
|
|
if (i > 64) {
|
|
av_log(c->avctx, AV_LOG_ERROR, "Run went out of bounds\n");
|
|
return -1;
|
|
}
|
|
if (mode) {
|
|
v = binkb_get_value(c, BINKB_SRC_COLORS);
|
|
for (j = 0; j < run; j++)
|
|
dst[coordmap[*scan++]] = v;
|
|
} else {
|
|
for (j = 0; j < run; j++)
|
|
dst[coordmap[*scan++]] = binkb_get_value(c, BINKB_SRC_COLORS);
|
|
}
|
|
} while (i < 63);
|
|
if (i == 63)
|
|
dst[coordmap[*scan++]] = binkb_get_value(c, BINKB_SRC_COLORS);
|
|
break;
|
|
case 2:
|
|
memset(dctblock, 0, sizeof(*dctblock) * 64);
|
|
dctblock[0] = binkb_get_value(c, BINKB_SRC_INTRA_DC);
|
|
qp = binkb_get_value(c, BINKB_SRC_INTRA_Q);
|
|
read_dct_coeffs(gb, dctblock, bink_scan, binkb_intra_quant, qp);
|
|
c->bdsp.idct_put(dst, stride, dctblock);
|
|
break;
|
|
case 3:
|
|
xoff = binkb_get_value(c, BINKB_SRC_X_OFF);
|
|
yoff = binkb_get_value(c, BINKB_SRC_Y_OFF) + ybias;
|
|
ref = dst + xoff + yoff * stride;
|
|
if (ref < ref_start || ref + 8*stride > ref_end) {
|
|
av_log(c->avctx, AV_LOG_WARNING, "Reference block is out of bounds\n");
|
|
} else if (ref + 8*stride < dst || ref >= dst + 8*stride) {
|
|
c->dsp.put_pixels_tab[1][0](dst, ref, stride, 8);
|
|
} else {
|
|
put_pixels8x8_overlapped(dst, ref, stride);
|
|
}
|
|
c->dsp.clear_block(block);
|
|
v = binkb_get_value(c, BINKB_SRC_INTER_COEFS);
|
|
read_residue(gb, block, v);
|
|
c->dsp.add_pixels8(dst, block, stride);
|
|
break;
|
|
case 4:
|
|
xoff = binkb_get_value(c, BINKB_SRC_X_OFF);
|
|
yoff = binkb_get_value(c, BINKB_SRC_Y_OFF) + ybias;
|
|
ref = dst + xoff + yoff * stride;
|
|
if (ref < ref_start || ref + 8 * stride > ref_end) {
|
|
av_log(c->avctx, AV_LOG_WARNING, "Reference block is out of bounds\n");
|
|
} else if (ref + 8*stride < dst || ref >= dst + 8*stride) {
|
|
c->dsp.put_pixels_tab[1][0](dst, ref, stride, 8);
|
|
} else {
|
|
put_pixels8x8_overlapped(dst, ref, stride);
|
|
}
|
|
memset(dctblock, 0, sizeof(*dctblock) * 64);
|
|
dctblock[0] = binkb_get_value(c, BINKB_SRC_INTER_DC);
|
|
qp = binkb_get_value(c, BINKB_SRC_INTER_Q);
|
|
read_dct_coeffs(gb, dctblock, bink_scan, binkb_inter_quant, qp);
|
|
c->bdsp.idct_add(dst, stride, dctblock);
|
|
break;
|
|
case 5:
|
|
v = binkb_get_value(c, BINKB_SRC_COLORS);
|
|
c->dsp.fill_block_tab[1](dst, v, stride, 8);
|
|
break;
|
|
case 6:
|
|
for (i = 0; i < 2; i++)
|
|
col[i] = binkb_get_value(c, BINKB_SRC_COLORS);
|
|
for (i = 0; i < 8; i++) {
|
|
v = binkb_get_value(c, BINKB_SRC_PATTERN);
|
|
for (j = 0; j < 8; j++, v >>= 1)
|
|
dst[i*stride + j] = col[v & 1];
|
|
}
|
|
break;
|
|
case 7:
|
|
xoff = binkb_get_value(c, BINKB_SRC_X_OFF);
|
|
yoff = binkb_get_value(c, BINKB_SRC_Y_OFF) + ybias;
|
|
ref = dst + xoff + yoff * stride;
|
|
if (ref < ref_start || ref + 8 * stride > ref_end) {
|
|
av_log(c->avctx, AV_LOG_WARNING, "Reference block is out of bounds\n");
|
|
} else if (ref + 8*stride < dst || ref >= dst + 8*stride) {
|
|
c->dsp.put_pixels_tab[1][0](dst, ref, stride, 8);
|
|
} else {
|
|
put_pixels8x8_overlapped(dst, ref, stride);
|
|
}
|
|
break;
|
|
case 8:
|
|
for (i = 0; i < 8; i++)
|
|
memcpy(dst + i*stride, c->bundle[BINKB_SRC_COLORS].cur_ptr + i*8, 8);
|
|
c->bundle[BINKB_SRC_COLORS].cur_ptr += 64;
|
|
break;
|
|
default:
|
|
av_log(c->avctx, AV_LOG_ERROR, "Unknown block type %d\n", blk);
|
|
return -1;
|
|
}
|
|
}
|
|
}
|
|
if (get_bits_count(gb) & 0x1F) //next plane data starts at 32-bit boundary
|
|
skip_bits_long(gb, 32 - (get_bits_count(gb) & 0x1F));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bink_decode_plane(BinkContext *c, GetBitContext *gb, int plane_idx,
|
|
int is_chroma)
|
|
{
|
|
int blk;
|
|
int i, j, bx, by;
|
|
uint8_t *dst, *prev, *ref, *ref_start, *ref_end;
|
|
int v, col[2];
|
|
const uint8_t *scan;
|
|
int xoff, yoff;
|
|
LOCAL_ALIGNED_16(DCTELEM, block, [64]);
|
|
LOCAL_ALIGNED_16(uint8_t, ublock, [64]);
|
|
LOCAL_ALIGNED_16(int32_t, dctblock, [64]);
|
|
int coordmap[64];
|
|
|
|
const int stride = c->pic.linesize[plane_idx];
|
|
int bw = is_chroma ? (c->avctx->width + 15) >> 4 : (c->avctx->width + 7) >> 3;
|
|
int bh = is_chroma ? (c->avctx->height + 15) >> 4 : (c->avctx->height + 7) >> 3;
|
|
int width = c->avctx->width >> is_chroma;
|
|
|
|
init_lengths(c, FFMAX(width, 8), bw);
|
|
for (i = 0; i < BINK_NB_SRC; i++)
|
|
read_bundle(gb, c, i);
|
|
|
|
ref_start = c->last.data[plane_idx];
|
|
ref_end = c->last.data[plane_idx]
|
|
+ (bw - 1 + c->last.linesize[plane_idx] * (bh - 1)) * 8;
|
|
|
|
for (i = 0; i < 64; i++)
|
|
coordmap[i] = (i & 7) + (i >> 3) * stride;
|
|
|
|
for (by = 0; by < bh; by++) {
|
|
if (read_block_types(c->avctx, gb, &c->bundle[BINK_SRC_BLOCK_TYPES]) < 0)
|
|
return -1;
|
|
if (read_block_types(c->avctx, gb, &c->bundle[BINK_SRC_SUB_BLOCK_TYPES]) < 0)
|
|
return -1;
|
|
if (read_colors(gb, &c->bundle[BINK_SRC_COLORS], c) < 0)
|
|
return -1;
|
|
if (read_patterns(c->avctx, gb, &c->bundle[BINK_SRC_PATTERN]) < 0)
|
|
return -1;
|
|
if (read_motion_values(c->avctx, gb, &c->bundle[BINK_SRC_X_OFF]) < 0)
|
|
return -1;
|
|
if (read_motion_values(c->avctx, gb, &c->bundle[BINK_SRC_Y_OFF]) < 0)
|
|
return -1;
|
|
if (read_dcs(c->avctx, gb, &c->bundle[BINK_SRC_INTRA_DC], DC_START_BITS, 0) < 0)
|
|
return -1;
|
|
if (read_dcs(c->avctx, gb, &c->bundle[BINK_SRC_INTER_DC], DC_START_BITS, 1) < 0)
|
|
return -1;
|
|
if (read_runs(c->avctx, gb, &c->bundle[BINK_SRC_RUN]) < 0)
|
|
return -1;
|
|
|
|
if (by == bh)
|
|
break;
|
|
dst = c->pic.data[plane_idx] + 8*by*stride;
|
|
prev = c->last.data[plane_idx] + 8*by*stride;
|
|
for (bx = 0; bx < bw; bx++, dst += 8, prev += 8) {
|
|
blk = get_value(c, BINK_SRC_BLOCK_TYPES);
|
|
// 16x16 block type on odd line means part of the already decoded block, so skip it
|
|
if ((by & 1) && blk == SCALED_BLOCK) {
|
|
bx++;
|
|
dst += 8;
|
|
prev += 8;
|
|
continue;
|
|
}
|
|
switch (blk) {
|
|
case SKIP_BLOCK:
|
|
c->dsp.put_pixels_tab[1][0](dst, prev, stride, 8);
|
|
break;
|
|
case SCALED_BLOCK:
|
|
blk = get_value(c, BINK_SRC_SUB_BLOCK_TYPES);
|
|
switch (blk) {
|
|
case RUN_BLOCK:
|
|
scan = bink_patterns[get_bits(gb, 4)];
|
|
i = 0;
|
|
do {
|
|
int run = get_value(c, BINK_SRC_RUN) + 1;
|
|
|
|
i += run;
|
|
if (i > 64) {
|
|
av_log(c->avctx, AV_LOG_ERROR, "Run went out of bounds\n");
|
|
return -1;
|
|
}
|
|
if (get_bits1(gb)) {
|
|
v = get_value(c, BINK_SRC_COLORS);
|
|
for (j = 0; j < run; j++)
|
|
ublock[*scan++] = v;
|
|
} else {
|
|
for (j = 0; j < run; j++)
|
|
ublock[*scan++] = get_value(c, BINK_SRC_COLORS);
|
|
}
|
|
} while (i < 63);
|
|
if (i == 63)
|
|
ublock[*scan++] = get_value(c, BINK_SRC_COLORS);
|
|
break;
|
|
case INTRA_BLOCK:
|
|
memset(dctblock, 0, sizeof(*dctblock) * 64);
|
|
dctblock[0] = get_value(c, BINK_SRC_INTRA_DC);
|
|
read_dct_coeffs(gb, dctblock, bink_scan, bink_intra_quant, -1);
|
|
c->bdsp.idct_put(ublock, 8, dctblock);
|
|
break;
|
|
case FILL_BLOCK:
|
|
v = get_value(c, BINK_SRC_COLORS);
|
|
c->dsp.fill_block_tab[0](dst, v, stride, 16);
|
|
break;
|
|
case PATTERN_BLOCK:
|
|
for (i = 0; i < 2; i++)
|
|
col[i] = get_value(c, BINK_SRC_COLORS);
|
|
for (j = 0; j < 8; j++) {
|
|
v = get_value(c, BINK_SRC_PATTERN);
|
|
for (i = 0; i < 8; i++, v >>= 1)
|
|
ublock[i + j*8] = col[v & 1];
|
|
}
|
|
break;
|
|
case RAW_BLOCK:
|
|
for (j = 0; j < 8; j++)
|
|
for (i = 0; i < 8; i++)
|
|
ublock[i + j*8] = get_value(c, BINK_SRC_COLORS);
|
|
break;
|
|
default:
|
|
av_log(c->avctx, AV_LOG_ERROR, "Incorrect 16x16 block type %d\n", blk);
|
|
return -1;
|
|
}
|
|
if (blk != FILL_BLOCK)
|
|
c->bdsp.scale_block(ublock, dst, stride);
|
|
bx++;
|
|
dst += 8;
|
|
prev += 8;
|
|
break;
|
|
case MOTION_BLOCK:
|
|
xoff = get_value(c, BINK_SRC_X_OFF);
|
|
yoff = get_value(c, BINK_SRC_Y_OFF);
|
|
ref = prev + xoff + yoff * stride;
|
|
if (ref < ref_start || ref > ref_end) {
|
|
av_log(c->avctx, AV_LOG_ERROR, "Copy out of bounds @%d, %d\n",
|
|
bx*8 + xoff, by*8 + yoff);
|
|
return -1;
|
|
}
|
|
c->dsp.put_pixels_tab[1][0](dst, ref, stride, 8);
|
|
break;
|
|
case RUN_BLOCK:
|
|
scan = bink_patterns[get_bits(gb, 4)];
|
|
i = 0;
|
|
do {
|
|
int run = get_value(c, BINK_SRC_RUN) + 1;
|
|
|
|
i += run;
|
|
if (i > 64) {
|
|
av_log(c->avctx, AV_LOG_ERROR, "Run went out of bounds\n");
|
|
return -1;
|
|
}
|
|
if (get_bits1(gb)) {
|
|
v = get_value(c, BINK_SRC_COLORS);
|
|
for (j = 0; j < run; j++)
|
|
dst[coordmap[*scan++]] = v;
|
|
} else {
|
|
for (j = 0; j < run; j++)
|
|
dst[coordmap[*scan++]] = get_value(c, BINK_SRC_COLORS);
|
|
}
|
|
} while (i < 63);
|
|
if (i == 63)
|
|
dst[coordmap[*scan++]] = get_value(c, BINK_SRC_COLORS);
|
|
break;
|
|
case RESIDUE_BLOCK:
|
|
xoff = get_value(c, BINK_SRC_X_OFF);
|
|
yoff = get_value(c, BINK_SRC_Y_OFF);
|
|
ref = prev + xoff + yoff * stride;
|
|
if (ref < ref_start || ref > ref_end) {
|
|
av_log(c->avctx, AV_LOG_ERROR, "Copy out of bounds @%d, %d\n",
|
|
bx*8 + xoff, by*8 + yoff);
|
|
return -1;
|
|
}
|
|
c->dsp.put_pixels_tab[1][0](dst, ref, stride, 8);
|
|
c->dsp.clear_block(block);
|
|
v = get_bits(gb, 7);
|
|
read_residue(gb, block, v);
|
|
c->dsp.add_pixels8(dst, block, stride);
|
|
break;
|
|
case INTRA_BLOCK:
|
|
memset(dctblock, 0, sizeof(*dctblock) * 64);
|
|
dctblock[0] = get_value(c, BINK_SRC_INTRA_DC);
|
|
read_dct_coeffs(gb, dctblock, bink_scan, bink_intra_quant, -1);
|
|
c->bdsp.idct_put(dst, stride, dctblock);
|
|
break;
|
|
case FILL_BLOCK:
|
|
v = get_value(c, BINK_SRC_COLORS);
|
|
c->dsp.fill_block_tab[1](dst, v, stride, 8);
|
|
break;
|
|
case INTER_BLOCK:
|
|
xoff = get_value(c, BINK_SRC_X_OFF);
|
|
yoff = get_value(c, BINK_SRC_Y_OFF);
|
|
ref = prev + xoff + yoff * stride;
|
|
c->dsp.put_pixels_tab[1][0](dst, ref, stride, 8);
|
|
memset(dctblock, 0, sizeof(*dctblock) * 64);
|
|
dctblock[0] = get_value(c, BINK_SRC_INTER_DC);
|
|
read_dct_coeffs(gb, dctblock, bink_scan, bink_inter_quant, -1);
|
|
c->bdsp.idct_add(dst, stride, dctblock);
|
|
break;
|
|
case PATTERN_BLOCK:
|
|
for (i = 0; i < 2; i++)
|
|
col[i] = get_value(c, BINK_SRC_COLORS);
|
|
for (i = 0; i < 8; i++) {
|
|
v = get_value(c, BINK_SRC_PATTERN);
|
|
for (j = 0; j < 8; j++, v >>= 1)
|
|
dst[i*stride + j] = col[v & 1];
|
|
}
|
|
break;
|
|
case RAW_BLOCK:
|
|
for (i = 0; i < 8; i++)
|
|
memcpy(dst + i*stride, c->bundle[BINK_SRC_COLORS].cur_ptr + i*8, 8);
|
|
c->bundle[BINK_SRC_COLORS].cur_ptr += 64;
|
|
break;
|
|
default:
|
|
av_log(c->avctx, AV_LOG_ERROR, "Unknown block type %d\n", blk);
|
|
return -1;
|
|
}
|
|
}
|
|
}
|
|
if (get_bits_count(gb) & 0x1F) //next plane data starts at 32-bit boundary
|
|
skip_bits_long(gb, 32 - (get_bits_count(gb) & 0x1F));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *pkt)
|
|
{
|
|
BinkContext * const c = avctx->priv_data;
|
|
GetBitContext gb;
|
|
int plane, plane_idx;
|
|
int bits_count = pkt->size << 3;
|
|
|
|
if (c->version > 'b') {
|
|
if(c->pic.data[0])
|
|
avctx->release_buffer(avctx, &c->pic);
|
|
|
|
if(avctx->get_buffer(avctx, &c->pic) < 0){
|
|
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
|
|
return -1;
|
|
}
|
|
} else {
|
|
if(avctx->reget_buffer(avctx, &c->pic) < 0){
|
|
av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
init_get_bits(&gb, pkt->data, bits_count);
|
|
if (c->has_alpha) {
|
|
if (c->version >= 'i')
|
|
skip_bits_long(&gb, 32);
|
|
if (bink_decode_plane(c, &gb, 3, 0) < 0)
|
|
return -1;
|
|
}
|
|
if (c->version >= 'i')
|
|
skip_bits_long(&gb, 32);
|
|
|
|
for (plane = 0; plane < 3; plane++) {
|
|
plane_idx = (!plane || !c->swap_planes) ? plane : (plane ^ 3);
|
|
|
|
if (c->version > 'b') {
|
|
if (bink_decode_plane(c, &gb, plane_idx, !!plane) < 0)
|
|
return -1;
|
|
} else {
|
|
if (binkb_decode_plane(c, &gb, plane_idx, !pkt->pts, !!plane) < 0)
|
|
return -1;
|
|
}
|
|
if (get_bits_count(&gb) >= bits_count)
|
|
break;
|
|
}
|
|
emms_c();
|
|
|
|
*data_size = sizeof(AVFrame);
|
|
*(AVFrame*)data = c->pic;
|
|
|
|
if (c->version > 'b')
|
|
FFSWAP(AVFrame, c->pic, c->last);
|
|
|
|
/* always report that the buffer was completely consumed */
|
|
return pkt->size;
|
|
}
|
|
|
|
/**
|
|
* Caclulate quantization tables for version b
|
|
*/
|
|
static av_cold void binkb_calc_quant(void)
|
|
{
|
|
uint8_t inv_bink_scan[64];
|
|
double s[64];
|
|
int i, j;
|
|
|
|
for (j = 0; j < 8; j++) {
|
|
for (i = 0; i < 8; i++) {
|
|
if (j && j != 4)
|
|
if (i && i != 4)
|
|
s[j*8 + i] = cos(j * M_PI/16.0) * cos(i * M_PI/16.0) * 2.0;
|
|
else
|
|
s[j*8 + i] = cos(j * M_PI/16.0) * sqrt(2.0);
|
|
else
|
|
if (i && i != 4)
|
|
s[j*8 + i] = cos(i * M_PI/16.0) * sqrt(2.0);
|
|
else
|
|
s[j*8 + i] = 1.0;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < 64; i++)
|
|
inv_bink_scan[bink_scan[i]] = i;
|
|
|
|
for (j = 0; j < 16; j++) {
|
|
for (i = 0; i < 64; i++) {
|
|
int k = inv_bink_scan[i];
|
|
if (s[i] == 1.0) {
|
|
binkb_intra_quant[j][k] = (1L << 12) * binkb_intra_seed[i] *
|
|
binkb_num[j]/binkb_den[j];
|
|
binkb_inter_quant[j][k] = (1L << 12) * binkb_inter_seed[i] *
|
|
binkb_num[j]/binkb_den[j];
|
|
} else {
|
|
binkb_intra_quant[j][k] = (1L << 12) * binkb_intra_seed[i] * s[i] *
|
|
binkb_num[j]/(double)binkb_den[j];
|
|
binkb_inter_quant[j][k] = (1L << 12) * binkb_inter_seed[i] * s[i] *
|
|
binkb_num[j]/(double)binkb_den[j];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static av_cold int decode_init(AVCodecContext *avctx)
|
|
{
|
|
BinkContext * const c = avctx->priv_data;
|
|
static VLC_TYPE table[16 * 128][2];
|
|
static int binkb_initialised = 0;
|
|
int i;
|
|
int flags;
|
|
|
|
c->version = avctx->codec_tag >> 24;
|
|
if (avctx->extradata_size < 4) {
|
|
av_log(avctx, AV_LOG_ERROR, "Extradata missing or too short\n");
|
|
return -1;
|
|
}
|
|
flags = AV_RL32(avctx->extradata);
|
|
c->has_alpha = flags & BINK_FLAG_ALPHA;
|
|
c->swap_planes = c->version >= 'h';
|
|
if (!bink_trees[15].table) {
|
|
for (i = 0; i < 16; i++) {
|
|
const int maxbits = bink_tree_lens[i][15];
|
|
bink_trees[i].table = table + i*128;
|
|
bink_trees[i].table_allocated = 1 << maxbits;
|
|
init_vlc(&bink_trees[i], maxbits, 16,
|
|
bink_tree_lens[i], 1, 1,
|
|
bink_tree_bits[i], 1, 1, INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE);
|
|
}
|
|
}
|
|
c->avctx = avctx;
|
|
|
|
c->pic.data[0] = NULL;
|
|
|
|
if (av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0) {
|
|
return 1;
|
|
}
|
|
|
|
avctx->pix_fmt = c->has_alpha ? PIX_FMT_YUVA420P : PIX_FMT_YUV420P;
|
|
|
|
avctx->idct_algo = FF_IDCT_BINK;
|
|
dsputil_init(&c->dsp, avctx);
|
|
ff_binkdsp_init(&c->bdsp);
|
|
|
|
init_bundles(c);
|
|
|
|
if (c->version == 'b') {
|
|
if (!binkb_initialised) {
|
|
binkb_calc_quant();
|
|
binkb_initialised = 1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static av_cold int decode_end(AVCodecContext *avctx)
|
|
{
|
|
BinkContext * const c = avctx->priv_data;
|
|
|
|
if (c->pic.data[0])
|
|
avctx->release_buffer(avctx, &c->pic);
|
|
if (c->last.data[0])
|
|
avctx->release_buffer(avctx, &c->last);
|
|
|
|
free_bundles(c);
|
|
return 0;
|
|
}
|
|
|
|
AVCodec ff_bink_decoder = {
|
|
.name = "binkvideo",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.id = CODEC_ID_BINKVIDEO,
|
|
.priv_data_size = sizeof(BinkContext),
|
|
.init = decode_init,
|
|
.close = decode_end,
|
|
.decode = decode_frame,
|
|
.long_name = NULL_IF_CONFIG_SMALL("Bink video"),
|
|
};
|