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https://github.com/FFmpeg/FFmpeg.git
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44002d8323
Do not emulate larger edges than we will actually use for this round of MC. Decoding goes from avg+SE 29.972+/-0.023sec to 29.856+/-0.023, i.e. 0.12sec or ~0.4% faster.
1823 lines
64 KiB
C
1823 lines
64 KiB
C
/**
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* VP8 compatible video decoder
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*
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* Copyright (C) 2010 David Conrad
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* Copyright (C) 2010 Ronald S. Bultje
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* Copyright (C) 2010 Jason Garrett-Glaser
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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 "libavcore/imgutils.h"
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#include "avcodec.h"
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#include "vp56.h"
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#include "vp8data.h"
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#include "vp8dsp.h"
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#include "h264pred.h"
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#include "rectangle.h"
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typedef struct {
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uint8_t filter_level;
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uint8_t inner_limit;
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uint8_t inner_filter;
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} VP8FilterStrength;
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typedef struct {
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uint8_t skip;
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// todo: make it possible to check for at least (i4x4 or split_mv)
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// in one op. are others needed?
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uint8_t mode;
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uint8_t ref_frame;
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uint8_t partitioning;
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VP56mv mv;
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VP56mv bmv[16];
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} VP8Macroblock;
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typedef struct {
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AVCodecContext *avctx;
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DSPContext dsp;
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VP8DSPContext vp8dsp;
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H264PredContext hpc;
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vp8_mc_func put_pixels_tab[3][3][3];
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AVFrame frames[4];
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AVFrame *framep[4];
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uint8_t *edge_emu_buffer;
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VP56RangeCoder c; ///< header context, includes mb modes and motion vectors
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int profile;
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int mb_width; /* number of horizontal MB */
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int mb_height; /* number of vertical MB */
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int linesize;
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int uvlinesize;
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int keyframe;
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int invisible;
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int update_last; ///< update VP56_FRAME_PREVIOUS with the current one
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int update_golden; ///< VP56_FRAME_NONE if not updated, or which frame to copy if so
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int update_altref;
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int deblock_filter;
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/**
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* If this flag is not set, all the probability updates
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* are discarded after this frame is decoded.
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*/
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int update_probabilities;
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/**
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* All coefficients are contained in separate arith coding contexts.
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* There can be 1, 2, 4, or 8 of these after the header context.
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*/
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int num_coeff_partitions;
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VP56RangeCoder coeff_partition[8];
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VP8Macroblock *macroblocks;
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VP8Macroblock *macroblocks_base;
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VP8FilterStrength *filter_strength;
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uint8_t *intra4x4_pred_mode_top;
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uint8_t intra4x4_pred_mode_left[4];
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uint8_t *segmentation_map;
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/**
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* Cache of the top row needed for intra prediction
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* 16 for luma, 8 for each chroma plane
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*/
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uint8_t (*top_border)[16+8+8];
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/**
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* For coeff decode, we need to know whether the above block had non-zero
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* coefficients. This means for each macroblock, we need data for 4 luma
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* blocks, 2 u blocks, 2 v blocks, and the luma dc block, for a total of 9
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* per macroblock. We keep the last row in top_nnz.
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*/
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uint8_t (*top_nnz)[9];
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DECLARE_ALIGNED(8, uint8_t, left_nnz)[9];
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/**
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* This is the index plus one of the last non-zero coeff
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* for each of the blocks in the current macroblock.
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* So, 0 -> no coeffs
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* 1 -> dc-only (special transform)
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* 2+-> full transform
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*/
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DECLARE_ALIGNED(16, uint8_t, non_zero_count_cache)[6][4];
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DECLARE_ALIGNED(16, DCTELEM, block)[6][4][16];
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DECLARE_ALIGNED(16, DCTELEM, block_dc)[16];
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uint8_t intra4x4_pred_mode_mb[16];
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int chroma_pred_mode; ///< 8x8c pred mode of the current macroblock
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int segment; ///< segment of the current macroblock
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int mbskip_enabled;
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int sign_bias[4]; ///< one state [0, 1] per ref frame type
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int ref_count[3];
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/**
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* Base parameters for segmentation, i.e. per-macroblock parameters.
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* These must be kept unchanged even if segmentation is not used for
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* a frame, since the values persist between interframes.
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*/
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struct {
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int enabled;
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int absolute_vals;
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int update_map;
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int8_t base_quant[4];
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int8_t filter_level[4]; ///< base loop filter level
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} segmentation;
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/**
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* Macroblocks can have one of 4 different quants in a frame when
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* segmentation is enabled.
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* If segmentation is disabled, only the first segment's values are used.
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*/
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struct {
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// [0] - DC qmul [1] - AC qmul
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int16_t luma_qmul[2];
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int16_t luma_dc_qmul[2]; ///< luma dc-only block quant
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int16_t chroma_qmul[2];
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} qmat[4];
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struct {
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int simple;
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int level;
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int sharpness;
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} filter;
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struct {
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int enabled; ///< whether each mb can have a different strength based on mode/ref
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/**
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* filter strength adjustment for the following macroblock modes:
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* [0] - i4x4
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* [1] - zero mv
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* [2] - inter modes except for zero or split mv
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* [3] - split mv
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* i16x16 modes never have any adjustment
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*/
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int8_t mode[4];
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/**
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* filter strength adjustment for macroblocks that reference:
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* [0] - intra / VP56_FRAME_CURRENT
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* [1] - VP56_FRAME_PREVIOUS
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* [2] - VP56_FRAME_GOLDEN
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* [3] - altref / VP56_FRAME_GOLDEN2
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*/
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int8_t ref[4];
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} lf_delta;
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/**
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* These are all of the updatable probabilities for binary decisions.
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* They are only implictly reset on keyframes, making it quite likely
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* for an interframe to desync if a prior frame's header was corrupt
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* or missing outright!
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*/
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struct {
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uint8_t segmentid[3];
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uint8_t mbskip;
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uint8_t intra;
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uint8_t last;
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uint8_t golden;
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uint8_t pred16x16[4];
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uint8_t pred8x8c[3];
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/* Padded to allow overreads */
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uint8_t token[4][17][3][NUM_DCT_TOKENS-1];
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uint8_t mvc[2][19];
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} prob[2];
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} VP8Context;
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static void vp8_decode_flush(AVCodecContext *avctx)
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{
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VP8Context *s = avctx->priv_data;
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int i;
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for (i = 0; i < 4; i++)
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if (s->frames[i].data[0])
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avctx->release_buffer(avctx, &s->frames[i]);
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memset(s->framep, 0, sizeof(s->framep));
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av_freep(&s->macroblocks_base);
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av_freep(&s->filter_strength);
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av_freep(&s->intra4x4_pred_mode_top);
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av_freep(&s->top_nnz);
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av_freep(&s->edge_emu_buffer);
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av_freep(&s->top_border);
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av_freep(&s->segmentation_map);
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s->macroblocks = NULL;
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}
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static int update_dimensions(VP8Context *s, int width, int height)
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{
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if (av_image_check_size(width, height, 0, s->avctx))
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return AVERROR_INVALIDDATA;
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vp8_decode_flush(s->avctx);
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avcodec_set_dimensions(s->avctx, width, height);
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s->mb_width = (s->avctx->coded_width +15) / 16;
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s->mb_height = (s->avctx->coded_height+15) / 16;
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s->macroblocks_base = av_mallocz((s->mb_width+s->mb_height*2+1)*sizeof(*s->macroblocks));
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s->filter_strength = av_mallocz(s->mb_width*sizeof(*s->filter_strength));
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s->intra4x4_pred_mode_top = av_mallocz(s->mb_width*4);
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s->top_nnz = av_mallocz(s->mb_width*sizeof(*s->top_nnz));
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s->top_border = av_mallocz((s->mb_width+1)*sizeof(*s->top_border));
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s->segmentation_map = av_mallocz(s->mb_width*s->mb_height);
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if (!s->macroblocks_base || !s->filter_strength || !s->intra4x4_pred_mode_top ||
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!s->top_nnz || !s->top_border || !s->segmentation_map)
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return AVERROR(ENOMEM);
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s->macroblocks = s->macroblocks_base + 1;
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return 0;
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}
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static void parse_segment_info(VP8Context *s)
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{
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VP56RangeCoder *c = &s->c;
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int i;
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s->segmentation.update_map = vp8_rac_get(c);
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if (vp8_rac_get(c)) { // update segment feature data
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s->segmentation.absolute_vals = vp8_rac_get(c);
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for (i = 0; i < 4; i++)
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s->segmentation.base_quant[i] = vp8_rac_get_sint(c, 7);
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for (i = 0; i < 4; i++)
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s->segmentation.filter_level[i] = vp8_rac_get_sint(c, 6);
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}
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if (s->segmentation.update_map)
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for (i = 0; i < 3; i++)
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s->prob->segmentid[i] = vp8_rac_get(c) ? vp8_rac_get_uint(c, 8) : 255;
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}
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static void update_lf_deltas(VP8Context *s)
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{
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VP56RangeCoder *c = &s->c;
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int i;
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for (i = 0; i < 4; i++)
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s->lf_delta.ref[i] = vp8_rac_get_sint(c, 6);
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for (i = 0; i < 4; i++)
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s->lf_delta.mode[i] = vp8_rac_get_sint(c, 6);
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}
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static int setup_partitions(VP8Context *s, const uint8_t *buf, int buf_size)
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{
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const uint8_t *sizes = buf;
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int i;
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s->num_coeff_partitions = 1 << vp8_rac_get_uint(&s->c, 2);
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buf += 3*(s->num_coeff_partitions-1);
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buf_size -= 3*(s->num_coeff_partitions-1);
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if (buf_size < 0)
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return -1;
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for (i = 0; i < s->num_coeff_partitions-1; i++) {
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int size = AV_RL24(sizes + 3*i);
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if (buf_size - size < 0)
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return -1;
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ff_vp56_init_range_decoder(&s->coeff_partition[i], buf, size);
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buf += size;
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buf_size -= size;
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}
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ff_vp56_init_range_decoder(&s->coeff_partition[i], buf, buf_size);
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return 0;
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}
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static void get_quants(VP8Context *s)
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{
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VP56RangeCoder *c = &s->c;
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int i, base_qi;
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int yac_qi = vp8_rac_get_uint(c, 7);
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int ydc_delta = vp8_rac_get_sint(c, 4);
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int y2dc_delta = vp8_rac_get_sint(c, 4);
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int y2ac_delta = vp8_rac_get_sint(c, 4);
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int uvdc_delta = vp8_rac_get_sint(c, 4);
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int uvac_delta = vp8_rac_get_sint(c, 4);
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for (i = 0; i < 4; i++) {
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if (s->segmentation.enabled) {
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base_qi = s->segmentation.base_quant[i];
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if (!s->segmentation.absolute_vals)
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base_qi += yac_qi;
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} else
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base_qi = yac_qi;
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s->qmat[i].luma_qmul[0] = vp8_dc_qlookup[av_clip(base_qi + ydc_delta , 0, 127)];
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s->qmat[i].luma_qmul[1] = vp8_ac_qlookup[av_clip(base_qi , 0, 127)];
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s->qmat[i].luma_dc_qmul[0] = 2 * vp8_dc_qlookup[av_clip(base_qi + y2dc_delta, 0, 127)];
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s->qmat[i].luma_dc_qmul[1] = 155 * vp8_ac_qlookup[av_clip(base_qi + y2ac_delta, 0, 127)] / 100;
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s->qmat[i].chroma_qmul[0] = vp8_dc_qlookup[av_clip(base_qi + uvdc_delta, 0, 127)];
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s->qmat[i].chroma_qmul[1] = vp8_ac_qlookup[av_clip(base_qi + uvac_delta, 0, 127)];
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s->qmat[i].luma_dc_qmul[1] = FFMAX(s->qmat[i].luma_dc_qmul[1], 8);
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s->qmat[i].chroma_qmul[0] = FFMIN(s->qmat[i].chroma_qmul[0], 132);
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}
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}
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/**
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* Determine which buffers golden and altref should be updated with after this frame.
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* The spec isn't clear here, so I'm going by my understanding of what libvpx does
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*
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* Intra frames update all 3 references
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* Inter frames update VP56_FRAME_PREVIOUS if the update_last flag is set
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* If the update (golden|altref) flag is set, it's updated with the current frame
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* if update_last is set, and VP56_FRAME_PREVIOUS otherwise.
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* If the flag is not set, the number read means:
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* 0: no update
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* 1: VP56_FRAME_PREVIOUS
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* 2: update golden with altref, or update altref with golden
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*/
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static VP56Frame ref_to_update(VP8Context *s, int update, VP56Frame ref)
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{
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VP56RangeCoder *c = &s->c;
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if (update)
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return VP56_FRAME_CURRENT;
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switch (vp8_rac_get_uint(c, 2)) {
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case 1:
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return VP56_FRAME_PREVIOUS;
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case 2:
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return (ref == VP56_FRAME_GOLDEN) ? VP56_FRAME_GOLDEN2 : VP56_FRAME_GOLDEN;
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}
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return VP56_FRAME_NONE;
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}
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static void update_refs(VP8Context *s)
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{
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VP56RangeCoder *c = &s->c;
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int update_golden = vp8_rac_get(c);
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int update_altref = vp8_rac_get(c);
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s->update_golden = ref_to_update(s, update_golden, VP56_FRAME_GOLDEN);
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s->update_altref = ref_to_update(s, update_altref, VP56_FRAME_GOLDEN2);
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}
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static int decode_frame_header(VP8Context *s, const uint8_t *buf, int buf_size)
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{
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VP56RangeCoder *c = &s->c;
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int header_size, hscale, vscale, i, j, k, l, m, ret;
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int width = s->avctx->width;
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int height = s->avctx->height;
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s->keyframe = !(buf[0] & 1);
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s->profile = (buf[0]>>1) & 7;
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s->invisible = !(buf[0] & 0x10);
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header_size = AV_RL24(buf) >> 5;
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buf += 3;
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buf_size -= 3;
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if (s->profile > 3)
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av_log(s->avctx, AV_LOG_WARNING, "Unknown profile %d\n", s->profile);
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if (!s->profile)
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memcpy(s->put_pixels_tab, s->vp8dsp.put_vp8_epel_pixels_tab, sizeof(s->put_pixels_tab));
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else // profile 1-3 use bilinear, 4+ aren't defined so whatever
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memcpy(s->put_pixels_tab, s->vp8dsp.put_vp8_bilinear_pixels_tab, sizeof(s->put_pixels_tab));
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if (header_size > buf_size - 7*s->keyframe) {
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av_log(s->avctx, AV_LOG_ERROR, "Header size larger than data provided\n");
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return AVERROR_INVALIDDATA;
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}
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if (s->keyframe) {
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if (AV_RL24(buf) != 0x2a019d) {
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av_log(s->avctx, AV_LOG_ERROR, "Invalid start code 0x%x\n", AV_RL24(buf));
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return AVERROR_INVALIDDATA;
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}
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width = AV_RL16(buf+3) & 0x3fff;
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height = AV_RL16(buf+5) & 0x3fff;
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hscale = buf[4] >> 6;
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vscale = buf[6] >> 6;
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buf += 7;
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buf_size -= 7;
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if (hscale || vscale)
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av_log_missing_feature(s->avctx, "Upscaling", 1);
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s->update_golden = s->update_altref = VP56_FRAME_CURRENT;
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for (i = 0; i < 4; i++)
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for (j = 0; j < 16; j++)
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memcpy(s->prob->token[i][j], vp8_token_default_probs[i][vp8_coeff_band[j]],
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sizeof(s->prob->token[i][j]));
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memcpy(s->prob->pred16x16, vp8_pred16x16_prob_inter, sizeof(s->prob->pred16x16));
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memcpy(s->prob->pred8x8c , vp8_pred8x8c_prob_inter , sizeof(s->prob->pred8x8c));
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memcpy(s->prob->mvc , vp8_mv_default_prob , sizeof(s->prob->mvc));
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memset(&s->segmentation, 0, sizeof(s->segmentation));
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}
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if (!s->macroblocks_base || /* first frame */
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width != s->avctx->width || height != s->avctx->height) {
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if ((ret = update_dimensions(s, width, height) < 0))
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return ret;
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}
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ff_vp56_init_range_decoder(c, buf, header_size);
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buf += header_size;
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buf_size -= header_size;
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if (s->keyframe) {
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if (vp8_rac_get(c))
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av_log(s->avctx, AV_LOG_WARNING, "Unspecified colorspace\n");
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vp8_rac_get(c); // whether we can skip clamping in dsp functions
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}
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|
|
if ((s->segmentation.enabled = vp8_rac_get(c)))
|
|
parse_segment_info(s);
|
|
else
|
|
s->segmentation.update_map = 0; // FIXME: move this to some init function?
|
|
|
|
s->filter.simple = vp8_rac_get(c);
|
|
s->filter.level = vp8_rac_get_uint(c, 6);
|
|
s->filter.sharpness = vp8_rac_get_uint(c, 3);
|
|
|
|
if ((s->lf_delta.enabled = vp8_rac_get(c)))
|
|
if (vp8_rac_get(c))
|
|
update_lf_deltas(s);
|
|
|
|
if (setup_partitions(s, buf, buf_size)) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Invalid partitions\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
get_quants(s);
|
|
|
|
if (!s->keyframe) {
|
|
update_refs(s);
|
|
s->sign_bias[VP56_FRAME_GOLDEN] = vp8_rac_get(c);
|
|
s->sign_bias[VP56_FRAME_GOLDEN2 /* altref */] = vp8_rac_get(c);
|
|
}
|
|
|
|
// if we aren't saving this frame's probabilities for future frames,
|
|
// make a copy of the current probabilities
|
|
if (!(s->update_probabilities = vp8_rac_get(c)))
|
|
s->prob[1] = s->prob[0];
|
|
|
|
s->update_last = s->keyframe || vp8_rac_get(c);
|
|
|
|
for (i = 0; i < 4; i++)
|
|
for (j = 0; j < 8; j++)
|
|
for (k = 0; k < 3; k++)
|
|
for (l = 0; l < NUM_DCT_TOKENS-1; l++)
|
|
if (vp56_rac_get_prob_branchy(c, vp8_token_update_probs[i][j][k][l])) {
|
|
int prob = vp8_rac_get_uint(c, 8);
|
|
for (m = 0; vp8_coeff_band_indexes[j][m] >= 0; m++)
|
|
s->prob->token[i][vp8_coeff_band_indexes[j][m]][k][l] = prob;
|
|
}
|
|
|
|
if ((s->mbskip_enabled = vp8_rac_get(c)))
|
|
s->prob->mbskip = vp8_rac_get_uint(c, 8);
|
|
|
|
if (!s->keyframe) {
|
|
s->prob->intra = vp8_rac_get_uint(c, 8);
|
|
s->prob->last = vp8_rac_get_uint(c, 8);
|
|
s->prob->golden = vp8_rac_get_uint(c, 8);
|
|
|
|
if (vp8_rac_get(c))
|
|
for (i = 0; i < 4; i++)
|
|
s->prob->pred16x16[i] = vp8_rac_get_uint(c, 8);
|
|
if (vp8_rac_get(c))
|
|
for (i = 0; i < 3; i++)
|
|
s->prob->pred8x8c[i] = vp8_rac_get_uint(c, 8);
|
|
|
|
// 17.2 MV probability update
|
|
for (i = 0; i < 2; i++)
|
|
for (j = 0; j < 19; j++)
|
|
if (vp56_rac_get_prob_branchy(c, vp8_mv_update_prob[i][j]))
|
|
s->prob->mvc[i][j] = vp8_rac_get_nn(c);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static av_always_inline
|
|
void clamp_mv(VP8Context *s, VP56mv *dst, const VP56mv *src, int mb_x, int mb_y)
|
|
{
|
|
#define MARGIN (16 << 2)
|
|
dst->x = av_clip(src->x, -((mb_x << 6) + MARGIN),
|
|
((s->mb_width - 1 - mb_x) << 6) + MARGIN);
|
|
dst->y = av_clip(src->y, -((mb_y << 6) + MARGIN),
|
|
((s->mb_height - 1 - mb_y) << 6) + MARGIN);
|
|
}
|
|
|
|
static av_always_inline
|
|
void find_near_mvs(VP8Context *s, VP8Macroblock *mb,
|
|
VP56mv near[2], VP56mv *best, uint8_t cnt[4])
|
|
{
|
|
VP8Macroblock *mb_edge[3] = { mb + 2 /* top */,
|
|
mb - 1 /* left */,
|
|
mb + 1 /* top-left */ };
|
|
enum { EDGE_TOP, EDGE_LEFT, EDGE_TOPLEFT };
|
|
VP56mv near_mv[4] = {{ 0 }};
|
|
enum { CNT_ZERO, CNT_NEAREST, CNT_NEAR, CNT_SPLITMV };
|
|
int idx = CNT_ZERO;
|
|
int best_idx = CNT_ZERO;
|
|
int cur_sign_bias = s->sign_bias[mb->ref_frame];
|
|
int *sign_bias = s->sign_bias;
|
|
|
|
/* Process MB on top, left and top-left */
|
|
#define MV_EDGE_CHECK(n)\
|
|
{\
|
|
VP8Macroblock *edge = mb_edge[n];\
|
|
int edge_ref = edge->ref_frame;\
|
|
if (edge_ref != VP56_FRAME_CURRENT) {\
|
|
uint32_t mv = AV_RN32A(&edge->mv);\
|
|
if (mv) {\
|
|
if (cur_sign_bias != sign_bias[edge_ref]) {\
|
|
/* SWAR negate of the values in mv. */\
|
|
mv = ~mv;\
|
|
mv = ((mv&0x7fff7fff) + 0x00010001) ^ (mv&0x80008000);\
|
|
}\
|
|
if (!n || mv != AV_RN32A(&near_mv[idx]))\
|
|
AV_WN32A(&near_mv[++idx], mv);\
|
|
cnt[idx] += 1 + (n != 2);\
|
|
} else\
|
|
cnt[CNT_ZERO] += 1 + (n != 2);\
|
|
}\
|
|
}
|
|
MV_EDGE_CHECK(0)
|
|
MV_EDGE_CHECK(1)
|
|
MV_EDGE_CHECK(2)
|
|
|
|
/* If we have three distinct MVs, merge first and last if they're the same */
|
|
if (cnt[CNT_SPLITMV] && AV_RN32A(&near_mv[1+EDGE_TOP]) == AV_RN32A(&near_mv[1+EDGE_TOPLEFT]))
|
|
cnt[CNT_NEAREST] += 1;
|
|
|
|
cnt[CNT_SPLITMV] = ((mb_edge[EDGE_LEFT]->mode == VP8_MVMODE_SPLIT) +
|
|
(mb_edge[EDGE_TOP]->mode == VP8_MVMODE_SPLIT)) * 2 +
|
|
(mb_edge[EDGE_TOPLEFT]->mode == VP8_MVMODE_SPLIT);
|
|
|
|
/* Swap near and nearest if necessary */
|
|
if (cnt[CNT_NEAR] > cnt[CNT_NEAREST]) {
|
|
FFSWAP(uint8_t, cnt[CNT_NEAREST], cnt[CNT_NEAR]);
|
|
FFSWAP( VP56mv, near_mv[CNT_NEAREST], near_mv[CNT_NEAR]);
|
|
}
|
|
|
|
/* Choose the best mv out of 0,0 and the nearest mv */
|
|
if (cnt[CNT_NEAREST] >= cnt[CNT_ZERO])
|
|
best_idx = CNT_NEAREST;
|
|
|
|
mb->mv = near_mv[best_idx];
|
|
near[0] = near_mv[CNT_NEAREST];
|
|
near[1] = near_mv[CNT_NEAR];
|
|
}
|
|
|
|
/**
|
|
* Motion vector coding, 17.1.
|
|
*/
|
|
static int read_mv_component(VP56RangeCoder *c, const uint8_t *p)
|
|
{
|
|
int bit, x = 0;
|
|
|
|
if (vp56_rac_get_prob_branchy(c, p[0])) {
|
|
int i;
|
|
|
|
for (i = 0; i < 3; i++)
|
|
x += vp56_rac_get_prob(c, p[9 + i]) << i;
|
|
for (i = 9; i > 3; i--)
|
|
x += vp56_rac_get_prob(c, p[9 + i]) << i;
|
|
if (!(x & 0xFFF0) || vp56_rac_get_prob(c, p[12]))
|
|
x += 8;
|
|
} else {
|
|
// small_mvtree
|
|
const uint8_t *ps = p+2;
|
|
bit = vp56_rac_get_prob(c, *ps);
|
|
ps += 1 + 3*bit;
|
|
x += 4*bit;
|
|
bit = vp56_rac_get_prob(c, *ps);
|
|
ps += 1 + bit;
|
|
x += 2*bit;
|
|
x += vp56_rac_get_prob(c, *ps);
|
|
}
|
|
|
|
return (x && vp56_rac_get_prob(c, p[1])) ? -x : x;
|
|
}
|
|
|
|
static av_always_inline
|
|
const uint8_t *get_submv_prob(uint32_t left, uint32_t top)
|
|
{
|
|
if (left == top)
|
|
return vp8_submv_prob[4-!!left];
|
|
if (!top)
|
|
return vp8_submv_prob[2];
|
|
return vp8_submv_prob[1-!!left];
|
|
}
|
|
|
|
/**
|
|
* Split motion vector prediction, 16.4.
|
|
* @returns the number of motion vectors parsed (2, 4 or 16)
|
|
*/
|
|
static av_always_inline
|
|
int decode_splitmvs(VP8Context *s, VP56RangeCoder *c, VP8Macroblock *mb)
|
|
{
|
|
int part_idx;
|
|
int n, num;
|
|
VP8Macroblock *top_mb = &mb[2];
|
|
VP8Macroblock *left_mb = &mb[-1];
|
|
const uint8_t *mbsplits_left = vp8_mbsplits[left_mb->partitioning],
|
|
*mbsplits_top = vp8_mbsplits[top_mb->partitioning],
|
|
*mbsplits_cur, *firstidx;
|
|
VP56mv *top_mv = top_mb->bmv;
|
|
VP56mv *left_mv = left_mb->bmv;
|
|
VP56mv *cur_mv = mb->bmv;
|
|
|
|
if (vp56_rac_get_prob_branchy(c, vp8_mbsplit_prob[0])) {
|
|
if (vp56_rac_get_prob_branchy(c, vp8_mbsplit_prob[1])) {
|
|
part_idx = VP8_SPLITMVMODE_16x8 + vp56_rac_get_prob(c, vp8_mbsplit_prob[2]);
|
|
} else {
|
|
part_idx = VP8_SPLITMVMODE_8x8;
|
|
}
|
|
} else {
|
|
part_idx = VP8_SPLITMVMODE_4x4;
|
|
}
|
|
|
|
num = vp8_mbsplit_count[part_idx];
|
|
mbsplits_cur = vp8_mbsplits[part_idx],
|
|
firstidx = vp8_mbfirstidx[part_idx];
|
|
mb->partitioning = part_idx;
|
|
|
|
for (n = 0; n < num; n++) {
|
|
int k = firstidx[n];
|
|
uint32_t left, above;
|
|
const uint8_t *submv_prob;
|
|
|
|
if (!(k & 3))
|
|
left = AV_RN32A(&left_mv[mbsplits_left[k + 3]]);
|
|
else
|
|
left = AV_RN32A(&cur_mv[mbsplits_cur[k - 1]]);
|
|
if (k <= 3)
|
|
above = AV_RN32A(&top_mv[mbsplits_top[k + 12]]);
|
|
else
|
|
above = AV_RN32A(&cur_mv[mbsplits_cur[k - 4]]);
|
|
|
|
submv_prob = get_submv_prob(left, above);
|
|
|
|
if (vp56_rac_get_prob_branchy(c, submv_prob[0])) {
|
|
if (vp56_rac_get_prob_branchy(c, submv_prob[1])) {
|
|
if (vp56_rac_get_prob_branchy(c, submv_prob[2])) {
|
|
mb->bmv[n].y = mb->mv.y + read_mv_component(c, s->prob->mvc[0]);
|
|
mb->bmv[n].x = mb->mv.x + read_mv_component(c, s->prob->mvc[1]);
|
|
} else {
|
|
AV_ZERO32(&mb->bmv[n]);
|
|
}
|
|
} else {
|
|
AV_WN32A(&mb->bmv[n], above);
|
|
}
|
|
} else {
|
|
AV_WN32A(&mb->bmv[n], left);
|
|
}
|
|
}
|
|
|
|
return num;
|
|
}
|
|
|
|
static av_always_inline
|
|
void decode_intra4x4_modes(VP8Context *s, VP56RangeCoder *c,
|
|
int mb_x, int keyframe)
|
|
{
|
|
uint8_t *intra4x4 = s->intra4x4_pred_mode_mb;
|
|
if (keyframe) {
|
|
int x, y;
|
|
uint8_t* const top = s->intra4x4_pred_mode_top + 4 * mb_x;
|
|
uint8_t* const left = s->intra4x4_pred_mode_left;
|
|
for (y = 0; y < 4; y++) {
|
|
for (x = 0; x < 4; x++) {
|
|
const uint8_t *ctx;
|
|
ctx = vp8_pred4x4_prob_intra[top[x]][left[y]];
|
|
*intra4x4 = vp8_rac_get_tree(c, vp8_pred4x4_tree, ctx);
|
|
left[y] = top[x] = *intra4x4;
|
|
intra4x4++;
|
|
}
|
|
}
|
|
} else {
|
|
int i;
|
|
for (i = 0; i < 16; i++)
|
|
intra4x4[i] = vp8_rac_get_tree(c, vp8_pred4x4_tree, vp8_pred4x4_prob_inter);
|
|
}
|
|
}
|
|
|
|
static av_always_inline
|
|
void decode_mb_mode(VP8Context *s, VP8Macroblock *mb, int mb_x, int mb_y, uint8_t *segment)
|
|
{
|
|
VP56RangeCoder *c = &s->c;
|
|
|
|
if (s->segmentation.update_map)
|
|
*segment = vp8_rac_get_tree(c, vp8_segmentid_tree, s->prob->segmentid);
|
|
s->segment = *segment;
|
|
|
|
mb->skip = s->mbskip_enabled ? vp56_rac_get_prob(c, s->prob->mbskip) : 0;
|
|
|
|
if (s->keyframe) {
|
|
mb->mode = vp8_rac_get_tree(c, vp8_pred16x16_tree_intra, vp8_pred16x16_prob_intra);
|
|
|
|
if (mb->mode == MODE_I4x4) {
|
|
decode_intra4x4_modes(s, c, mb_x, 1);
|
|
} else {
|
|
const uint32_t modes = vp8_pred4x4_mode[mb->mode] * 0x01010101u;
|
|
AV_WN32A(s->intra4x4_pred_mode_top + 4 * mb_x, modes);
|
|
AV_WN32A(s->intra4x4_pred_mode_left, modes);
|
|
}
|
|
|
|
s->chroma_pred_mode = vp8_rac_get_tree(c, vp8_pred8x8c_tree, vp8_pred8x8c_prob_intra);
|
|
mb->ref_frame = VP56_FRAME_CURRENT;
|
|
} else if (vp56_rac_get_prob_branchy(c, s->prob->intra)) {
|
|
VP56mv near[2], best;
|
|
uint8_t cnt[4] = { 0 };
|
|
|
|
// inter MB, 16.2
|
|
if (vp56_rac_get_prob_branchy(c, s->prob->last))
|
|
mb->ref_frame = vp56_rac_get_prob(c, s->prob->golden) ?
|
|
VP56_FRAME_GOLDEN2 /* altref */ : VP56_FRAME_GOLDEN;
|
|
else
|
|
mb->ref_frame = VP56_FRAME_PREVIOUS;
|
|
s->ref_count[mb->ref_frame-1]++;
|
|
|
|
// motion vectors, 16.3
|
|
find_near_mvs(s, mb, near, &best, cnt);
|
|
if (vp56_rac_get_prob_branchy(c, vp8_mode_contexts[cnt[0]][0])) {
|
|
if (vp56_rac_get_prob_branchy(c, vp8_mode_contexts[cnt[1]][1])) {
|
|
if (vp56_rac_get_prob_branchy(c, vp8_mode_contexts[cnt[2]][2])) {
|
|
if (vp56_rac_get_prob_branchy(c, vp8_mode_contexts[cnt[3]][3])) {
|
|
mb->mode = VP8_MVMODE_SPLIT;
|
|
clamp_mv(s, &mb->mv, &mb->mv, mb_x, mb_y);
|
|
mb->mv = mb->bmv[decode_splitmvs(s, c, mb) - 1];
|
|
} else {
|
|
mb->mode = VP8_MVMODE_NEW;
|
|
clamp_mv(s, &mb->mv, &mb->mv, mb_x, mb_y);
|
|
mb->mv.y += read_mv_component(c, s->prob->mvc[0]);
|
|
mb->mv.x += read_mv_component(c, s->prob->mvc[1]);
|
|
}
|
|
} else {
|
|
mb->mode = VP8_MVMODE_NEAR;
|
|
clamp_mv(s, &mb->mv, &near[1], mb_x, mb_y);
|
|
}
|
|
} else {
|
|
mb->mode = VP8_MVMODE_NEAREST;
|
|
clamp_mv(s, &mb->mv, &near[0], mb_x, mb_y);
|
|
}
|
|
} else {
|
|
mb->mode = VP8_MVMODE_ZERO;
|
|
AV_ZERO32(&mb->mv);
|
|
}
|
|
if (mb->mode != VP8_MVMODE_SPLIT) {
|
|
mb->partitioning = VP8_SPLITMVMODE_NONE;
|
|
mb->bmv[0] = mb->mv;
|
|
}
|
|
} else {
|
|
// intra MB, 16.1
|
|
mb->mode = vp8_rac_get_tree(c, vp8_pred16x16_tree_inter, s->prob->pred16x16);
|
|
|
|
if (mb->mode == MODE_I4x4)
|
|
decode_intra4x4_modes(s, c, mb_x, 0);
|
|
|
|
s->chroma_pred_mode = vp8_rac_get_tree(c, vp8_pred8x8c_tree, s->prob->pred8x8c);
|
|
mb->ref_frame = VP56_FRAME_CURRENT;
|
|
mb->partitioning = VP8_SPLITMVMODE_NONE;
|
|
AV_ZERO32(&mb->bmv[0]);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param c arithmetic bitstream reader context
|
|
* @param block destination for block coefficients
|
|
* @param probs probabilities to use when reading trees from the bitstream
|
|
* @param i initial coeff index, 0 unless a separate DC block is coded
|
|
* @param zero_nhood the initial prediction context for number of surrounding
|
|
* all-zero blocks (only left/top, so 0-2)
|
|
* @param qmul array holding the dc/ac dequant factor at position 0/1
|
|
* @return 0 if no coeffs were decoded
|
|
* otherwise, the index of the last coeff decoded plus one
|
|
*/
|
|
static int decode_block_coeffs_internal(VP56RangeCoder *c, DCTELEM block[16],
|
|
uint8_t probs[8][3][NUM_DCT_TOKENS-1],
|
|
int i, uint8_t *token_prob, int16_t qmul[2])
|
|
{
|
|
goto skip_eob;
|
|
do {
|
|
int coeff;
|
|
if (!vp56_rac_get_prob_branchy(c, token_prob[0])) // DCT_EOB
|
|
return i;
|
|
|
|
skip_eob:
|
|
if (!vp56_rac_get_prob_branchy(c, token_prob[1])) { // DCT_0
|
|
if (++i == 16)
|
|
return i; // invalid input; blocks should end with EOB
|
|
token_prob = probs[i][0];
|
|
goto skip_eob;
|
|
}
|
|
|
|
if (!vp56_rac_get_prob_branchy(c, token_prob[2])) { // DCT_1
|
|
coeff = 1;
|
|
token_prob = probs[i+1][1];
|
|
} else {
|
|
if (!vp56_rac_get_prob_branchy(c, token_prob[3])) { // DCT 2,3,4
|
|
coeff = vp56_rac_get_prob_branchy(c, token_prob[4]);
|
|
if (coeff)
|
|
coeff += vp56_rac_get_prob(c, token_prob[5]);
|
|
coeff += 2;
|
|
} else {
|
|
// DCT_CAT*
|
|
if (!vp56_rac_get_prob_branchy(c, token_prob[6])) {
|
|
if (!vp56_rac_get_prob_branchy(c, token_prob[7])) { // DCT_CAT1
|
|
coeff = 5 + vp56_rac_get_prob(c, vp8_dct_cat1_prob[0]);
|
|
} else { // DCT_CAT2
|
|
coeff = 7;
|
|
coeff += vp56_rac_get_prob(c, vp8_dct_cat2_prob[0]) << 1;
|
|
coeff += vp56_rac_get_prob(c, vp8_dct_cat2_prob[1]);
|
|
}
|
|
} else { // DCT_CAT3 and up
|
|
int a = vp56_rac_get_prob(c, token_prob[8]);
|
|
int b = vp56_rac_get_prob(c, token_prob[9+a]);
|
|
int cat = (a<<1) + b;
|
|
coeff = 3 + (8<<cat);
|
|
coeff += vp8_rac_get_coeff(c, vp8_dct_cat_prob[cat]);
|
|
}
|
|
}
|
|
token_prob = probs[i+1][2];
|
|
}
|
|
block[zigzag_scan[i]] = (vp8_rac_get(c) ? -coeff : coeff) * qmul[!!i];
|
|
} while (++i < 16);
|
|
|
|
return i;
|
|
}
|
|
|
|
static av_always_inline
|
|
int decode_block_coeffs(VP56RangeCoder *c, DCTELEM block[16],
|
|
uint8_t probs[8][3][NUM_DCT_TOKENS-1],
|
|
int i, int zero_nhood, int16_t qmul[2])
|
|
{
|
|
uint8_t *token_prob = probs[i][zero_nhood];
|
|
if (!vp56_rac_get_prob_branchy(c, token_prob[0])) // DCT_EOB
|
|
return 0;
|
|
return decode_block_coeffs_internal(c, block, probs, i, token_prob, qmul);
|
|
}
|
|
|
|
static av_always_inline
|
|
void decode_mb_coeffs(VP8Context *s, VP56RangeCoder *c, VP8Macroblock *mb,
|
|
uint8_t t_nnz[9], uint8_t l_nnz[9])
|
|
{
|
|
int i, x, y, luma_start = 0, luma_ctx = 3;
|
|
int nnz_pred, nnz, nnz_total = 0;
|
|
int segment = s->segment;
|
|
int block_dc = 0;
|
|
|
|
if (mb->mode != MODE_I4x4 && mb->mode != VP8_MVMODE_SPLIT) {
|
|
nnz_pred = t_nnz[8] + l_nnz[8];
|
|
|
|
// decode DC values and do hadamard
|
|
nnz = decode_block_coeffs(c, s->block_dc, s->prob->token[1], 0, nnz_pred,
|
|
s->qmat[segment].luma_dc_qmul);
|
|
l_nnz[8] = t_nnz[8] = !!nnz;
|
|
if (nnz) {
|
|
nnz_total += nnz;
|
|
block_dc = 1;
|
|
if (nnz == 1)
|
|
s->vp8dsp.vp8_luma_dc_wht_dc(s->block, s->block_dc);
|
|
else
|
|
s->vp8dsp.vp8_luma_dc_wht(s->block, s->block_dc);
|
|
}
|
|
luma_start = 1;
|
|
luma_ctx = 0;
|
|
}
|
|
|
|
// luma blocks
|
|
for (y = 0; y < 4; y++)
|
|
for (x = 0; x < 4; x++) {
|
|
nnz_pred = l_nnz[y] + t_nnz[x];
|
|
nnz = decode_block_coeffs(c, s->block[y][x], s->prob->token[luma_ctx], luma_start,
|
|
nnz_pred, s->qmat[segment].luma_qmul);
|
|
// nnz+block_dc may be one more than the actual last index, but we don't care
|
|
s->non_zero_count_cache[y][x] = nnz + block_dc;
|
|
t_nnz[x] = l_nnz[y] = !!nnz;
|
|
nnz_total += nnz;
|
|
}
|
|
|
|
// chroma blocks
|
|
// TODO: what to do about dimensions? 2nd dim for luma is x,
|
|
// but for chroma it's (y<<1)|x
|
|
for (i = 4; i < 6; i++)
|
|
for (y = 0; y < 2; y++)
|
|
for (x = 0; x < 2; x++) {
|
|
nnz_pred = l_nnz[i+2*y] + t_nnz[i+2*x];
|
|
nnz = decode_block_coeffs(c, s->block[i][(y<<1)+x], s->prob->token[2], 0,
|
|
nnz_pred, s->qmat[segment].chroma_qmul);
|
|
s->non_zero_count_cache[i][(y<<1)+x] = nnz;
|
|
t_nnz[i+2*x] = l_nnz[i+2*y] = !!nnz;
|
|
nnz_total += nnz;
|
|
}
|
|
|
|
// if there were no coded coeffs despite the macroblock not being marked skip,
|
|
// we MUST not do the inner loop filter and should not do IDCT
|
|
// Since skip isn't used for bitstream prediction, just manually set it.
|
|
if (!nnz_total)
|
|
mb->skip = 1;
|
|
}
|
|
|
|
static av_always_inline
|
|
void backup_mb_border(uint8_t *top_border, uint8_t *src_y, uint8_t *src_cb, uint8_t *src_cr,
|
|
int linesize, int uvlinesize, int simple)
|
|
{
|
|
AV_COPY128(top_border, src_y + 15*linesize);
|
|
if (!simple) {
|
|
AV_COPY64(top_border+16, src_cb + 7*uvlinesize);
|
|
AV_COPY64(top_border+24, src_cr + 7*uvlinesize);
|
|
}
|
|
}
|
|
|
|
static av_always_inline
|
|
void xchg_mb_border(uint8_t *top_border, uint8_t *src_y, uint8_t *src_cb, uint8_t *src_cr,
|
|
int linesize, int uvlinesize, int mb_x, int mb_y, int mb_width,
|
|
int simple, int xchg)
|
|
{
|
|
uint8_t *top_border_m1 = top_border-32; // for TL prediction
|
|
src_y -= linesize;
|
|
src_cb -= uvlinesize;
|
|
src_cr -= uvlinesize;
|
|
|
|
#define XCHG(a,b,xchg) do { \
|
|
if (xchg) AV_SWAP64(b,a); \
|
|
else AV_COPY64(b,a); \
|
|
} while (0)
|
|
|
|
XCHG(top_border_m1+8, src_y-8, xchg);
|
|
XCHG(top_border, src_y, xchg);
|
|
XCHG(top_border+8, src_y+8, 1);
|
|
if (mb_x < mb_width-1)
|
|
XCHG(top_border+32, src_y+16, 1);
|
|
|
|
// only copy chroma for normal loop filter
|
|
// or to initialize the top row to 127
|
|
if (!simple || !mb_y) {
|
|
XCHG(top_border_m1+16, src_cb-8, xchg);
|
|
XCHG(top_border_m1+24, src_cr-8, xchg);
|
|
XCHG(top_border+16, src_cb, 1);
|
|
XCHG(top_border+24, src_cr, 1);
|
|
}
|
|
}
|
|
|
|
static av_always_inline
|
|
int check_dc_pred8x8_mode(int mode, int mb_x, int mb_y)
|
|
{
|
|
if (!mb_x) {
|
|
return mb_y ? TOP_DC_PRED8x8 : DC_128_PRED8x8;
|
|
} else {
|
|
return mb_y ? mode : LEFT_DC_PRED8x8;
|
|
}
|
|
}
|
|
|
|
static av_always_inline
|
|
int check_tm_pred8x8_mode(int mode, int mb_x, int mb_y)
|
|
{
|
|
if (!mb_x) {
|
|
return mb_y ? VERT_PRED8x8 : DC_129_PRED8x8;
|
|
} else {
|
|
return mb_y ? mode : HOR_PRED8x8;
|
|
}
|
|
}
|
|
|
|
static av_always_inline
|
|
int check_intra_pred8x8_mode(int mode, int mb_x, int mb_y)
|
|
{
|
|
if (mode == DC_PRED8x8) {
|
|
return check_dc_pred8x8_mode(mode, mb_x, mb_y);
|
|
} else {
|
|
return mode;
|
|
}
|
|
}
|
|
|
|
static av_always_inline
|
|
int check_intra_pred8x8_mode_emuedge(int mode, int mb_x, int mb_y)
|
|
{
|
|
switch (mode) {
|
|
case DC_PRED8x8:
|
|
return check_dc_pred8x8_mode(mode, mb_x, mb_y);
|
|
case VERT_PRED8x8:
|
|
return !mb_y ? DC_127_PRED8x8 : mode;
|
|
case HOR_PRED8x8:
|
|
return !mb_x ? DC_129_PRED8x8 : mode;
|
|
case PLANE_PRED8x8 /*TM*/:
|
|
return check_tm_pred8x8_mode(mode, mb_x, mb_y);
|
|
}
|
|
return mode;
|
|
}
|
|
|
|
static av_always_inline
|
|
int check_tm_pred4x4_mode(int mode, int mb_x, int mb_y)
|
|
{
|
|
if (!mb_x) {
|
|
return mb_y ? VERT_VP8_PRED : DC_129_PRED;
|
|
} else {
|
|
return mb_y ? mode : HOR_VP8_PRED;
|
|
}
|
|
}
|
|
|
|
static av_always_inline
|
|
int check_intra_pred4x4_mode_emuedge(int mode, int mb_x, int mb_y, int *copy_buf)
|
|
{
|
|
switch (mode) {
|
|
case VERT_PRED:
|
|
if (!mb_x && mb_y) {
|
|
*copy_buf = 1;
|
|
return mode;
|
|
}
|
|
/* fall-through */
|
|
case DIAG_DOWN_LEFT_PRED:
|
|
case VERT_LEFT_PRED:
|
|
return !mb_y ? DC_127_PRED : mode;
|
|
case HOR_PRED:
|
|
if (!mb_y) {
|
|
*copy_buf = 1;
|
|
return mode;
|
|
}
|
|
/* fall-through */
|
|
case HOR_UP_PRED:
|
|
return !mb_x ? DC_129_PRED : mode;
|
|
case TM_VP8_PRED:
|
|
return check_tm_pred4x4_mode(mode, mb_x, mb_y);
|
|
case DC_PRED: // 4x4 DC doesn't use the same "H.264-style" exceptions as 16x16/8x8 DC
|
|
case DIAG_DOWN_RIGHT_PRED:
|
|
case VERT_RIGHT_PRED:
|
|
case HOR_DOWN_PRED:
|
|
if (!mb_y || !mb_x)
|
|
*copy_buf = 1;
|
|
return mode;
|
|
}
|
|
return mode;
|
|
}
|
|
|
|
static av_always_inline
|
|
void intra_predict(VP8Context *s, uint8_t *dst[3], VP8Macroblock *mb,
|
|
int mb_x, int mb_y)
|
|
{
|
|
AVCodecContext *avctx = s->avctx;
|
|
int x, y, mode, nnz, tr;
|
|
|
|
// for the first row, we need to run xchg_mb_border to init the top edge to 127
|
|
// otherwise, skip it if we aren't going to deblock
|
|
if (!(avctx->flags & CODEC_FLAG_EMU_EDGE && !mb_y) && (s->deblock_filter || !mb_y))
|
|
xchg_mb_border(s->top_border[mb_x+1], dst[0], dst[1], dst[2],
|
|
s->linesize, s->uvlinesize, mb_x, mb_y, s->mb_width,
|
|
s->filter.simple, 1);
|
|
|
|
if (mb->mode < MODE_I4x4) {
|
|
if (avctx->flags & CODEC_FLAG_EMU_EDGE) { // tested
|
|
mode = check_intra_pred8x8_mode_emuedge(mb->mode, mb_x, mb_y);
|
|
} else {
|
|
mode = check_intra_pred8x8_mode(mb->mode, mb_x, mb_y);
|
|
}
|
|
s->hpc.pred16x16[mode](dst[0], s->linesize);
|
|
} else {
|
|
uint8_t *ptr = dst[0];
|
|
uint8_t *intra4x4 = s->intra4x4_pred_mode_mb;
|
|
uint8_t tr_top[4] = { 127, 127, 127, 127 };
|
|
|
|
// all blocks on the right edge of the macroblock use bottom edge
|
|
// the top macroblock for their topright edge
|
|
uint8_t *tr_right = ptr - s->linesize + 16;
|
|
|
|
// if we're on the right edge of the frame, said edge is extended
|
|
// from the top macroblock
|
|
if (!(!mb_y && avctx->flags & CODEC_FLAG_EMU_EDGE) &&
|
|
mb_x == s->mb_width-1) {
|
|
tr = tr_right[-1]*0x01010101;
|
|
tr_right = (uint8_t *)&tr;
|
|
}
|
|
|
|
if (mb->skip)
|
|
AV_ZERO128(s->non_zero_count_cache);
|
|
|
|
for (y = 0; y < 4; y++) {
|
|
uint8_t *topright = ptr + 4 - s->linesize;
|
|
for (x = 0; x < 4; x++) {
|
|
int copy = 0, linesize = s->linesize;
|
|
uint8_t *dst = ptr+4*x;
|
|
DECLARE_ALIGNED(4, uint8_t, copy_dst)[5*8];
|
|
|
|
if ((y == 0 || x == 3) && mb_y == 0 && avctx->flags & CODEC_FLAG_EMU_EDGE) {
|
|
topright = tr_top;
|
|
} else if (x == 3)
|
|
topright = tr_right;
|
|
|
|
if (avctx->flags & CODEC_FLAG_EMU_EDGE) { // mb_x+x or mb_y+y is a hack but works
|
|
mode = check_intra_pred4x4_mode_emuedge(intra4x4[x], mb_x + x, mb_y + y, ©);
|
|
if (copy) {
|
|
dst = copy_dst + 12;
|
|
linesize = 8;
|
|
if (!(mb_y + y)) {
|
|
copy_dst[3] = 127U;
|
|
* (uint32_t *) (copy_dst + 4) = 127U * 0x01010101U;
|
|
} else {
|
|
* (uint32_t *) (copy_dst + 4) = * (uint32_t *) (ptr+4*x-s->linesize);
|
|
if (!(mb_x + x)) {
|
|
copy_dst[3] = 129U;
|
|
} else {
|
|
copy_dst[3] = ptr[4*x-s->linesize-1];
|
|
}
|
|
}
|
|
if (!(mb_x + x)) {
|
|
copy_dst[11] =
|
|
copy_dst[19] =
|
|
copy_dst[27] =
|
|
copy_dst[35] = 129U;
|
|
} else {
|
|
copy_dst[11] = ptr[4*x -1];
|
|
copy_dst[19] = ptr[4*x+s->linesize -1];
|
|
copy_dst[27] = ptr[4*x+s->linesize*2-1];
|
|
copy_dst[35] = ptr[4*x+s->linesize*3-1];
|
|
}
|
|
}
|
|
} else {
|
|
mode = intra4x4[x];
|
|
}
|
|
s->hpc.pred4x4[mode](dst, topright, linesize);
|
|
if (copy) {
|
|
* (uint32_t *) (ptr+4*x) = * (uint32_t *) (copy_dst + 12);
|
|
* (uint32_t *) (ptr+4*x+s->linesize) = * (uint32_t *) (copy_dst + 20);
|
|
* (uint32_t *) (ptr+4*x+s->linesize*2) = * (uint32_t *) (copy_dst + 28);
|
|
* (uint32_t *) (ptr+4*x+s->linesize*3) = * (uint32_t *) (copy_dst + 36);
|
|
}
|
|
|
|
nnz = s->non_zero_count_cache[y][x];
|
|
if (nnz) {
|
|
if (nnz == 1)
|
|
s->vp8dsp.vp8_idct_dc_add(ptr+4*x, s->block[y][x], s->linesize);
|
|
else
|
|
s->vp8dsp.vp8_idct_add(ptr+4*x, s->block[y][x], s->linesize);
|
|
}
|
|
topright += 4;
|
|
}
|
|
|
|
ptr += 4*s->linesize;
|
|
intra4x4 += 4;
|
|
}
|
|
}
|
|
|
|
if (avctx->flags & CODEC_FLAG_EMU_EDGE) {
|
|
mode = check_intra_pred8x8_mode_emuedge(s->chroma_pred_mode, mb_x, mb_y);
|
|
} else {
|
|
mode = check_intra_pred8x8_mode(s->chroma_pred_mode, mb_x, mb_y);
|
|
}
|
|
s->hpc.pred8x8[mode](dst[1], s->uvlinesize);
|
|
s->hpc.pred8x8[mode](dst[2], s->uvlinesize);
|
|
|
|
if (!(avctx->flags & CODEC_FLAG_EMU_EDGE && !mb_y) && (s->deblock_filter || !mb_y))
|
|
xchg_mb_border(s->top_border[mb_x+1], dst[0], dst[1], dst[2],
|
|
s->linesize, s->uvlinesize, mb_x, mb_y, s->mb_width,
|
|
s->filter.simple, 0);
|
|
}
|
|
|
|
/**
|
|
* Generic MC function.
|
|
*
|
|
* @param s VP8 decoding context
|
|
* @param luma 1 for luma (Y) planes, 0 for chroma (Cb/Cr) planes
|
|
* @param dst target buffer for block data at block position
|
|
* @param src reference picture buffer at origin (0, 0)
|
|
* @param mv motion vector (relative to block position) to get pixel data from
|
|
* @param x_off horizontal position of block from origin (0, 0)
|
|
* @param y_off vertical position of block from origin (0, 0)
|
|
* @param block_w width of block (16, 8 or 4)
|
|
* @param block_h height of block (always same as block_w)
|
|
* @param width width of src/dst plane data
|
|
* @param height height of src/dst plane data
|
|
* @param linesize size of a single line of plane data, including padding
|
|
* @param mc_func motion compensation function pointers (bilinear or sixtap MC)
|
|
*/
|
|
static av_always_inline
|
|
void vp8_mc(VP8Context *s, int luma,
|
|
uint8_t *dst, uint8_t *src, const VP56mv *mv,
|
|
int x_off, int y_off, int block_w, int block_h,
|
|
int width, int height, int linesize,
|
|
vp8_mc_func mc_func[3][3])
|
|
{
|
|
if (AV_RN32A(mv)) {
|
|
static const uint8_t idx[3][8] = {
|
|
{ 0, 1, 2, 1, 2, 1, 2, 1 }, // nr. of left extra pixels,
|
|
// also function pointer index
|
|
{ 0, 3, 5, 3, 5, 3, 5, 3 }, // nr. of extra pixels required
|
|
{ 0, 2, 3, 2, 3, 2, 3, 2 }, // nr. of right extra pixels
|
|
};
|
|
int mx = (mv->x << luma)&7, mx_idx = idx[0][mx];
|
|
int my = (mv->y << luma)&7, my_idx = idx[0][my];
|
|
|
|
x_off += mv->x >> (3 - luma);
|
|
y_off += mv->y >> (3 - luma);
|
|
|
|
// edge emulation
|
|
src += y_off * linesize + x_off;
|
|
if (x_off < mx_idx || x_off >= width - block_w - idx[2][mx] ||
|
|
y_off < my_idx || y_off >= height - block_h - idx[2][my]) {
|
|
ff_emulated_edge_mc(s->edge_emu_buffer, src - my_idx * linesize - mx_idx, linesize,
|
|
block_w + idx[1][mx], block_h + idx[1][my],
|
|
x_off - mx_idx, y_off - my_idx, width, height);
|
|
src = s->edge_emu_buffer + mx_idx + linesize * my_idx;
|
|
}
|
|
mc_func[my_idx][mx_idx](dst, linesize, src, linesize, block_h, mx, my);
|
|
} else
|
|
mc_func[0][0](dst, linesize, src + y_off * linesize + x_off, linesize, block_h, 0, 0);
|
|
}
|
|
|
|
static av_always_inline
|
|
void vp8_mc_part(VP8Context *s, uint8_t *dst[3],
|
|
AVFrame *ref_frame, int x_off, int y_off,
|
|
int bx_off, int by_off,
|
|
int block_w, int block_h,
|
|
int width, int height, VP56mv *mv)
|
|
{
|
|
VP56mv uvmv = *mv;
|
|
|
|
/* Y */
|
|
vp8_mc(s, 1, dst[0] + by_off * s->linesize + bx_off,
|
|
ref_frame->data[0], mv, x_off + bx_off, y_off + by_off,
|
|
block_w, block_h, width, height, s->linesize,
|
|
s->put_pixels_tab[block_w == 8]);
|
|
|
|
/* U/V */
|
|
if (s->profile == 3) {
|
|
uvmv.x &= ~7;
|
|
uvmv.y &= ~7;
|
|
}
|
|
x_off >>= 1; y_off >>= 1;
|
|
bx_off >>= 1; by_off >>= 1;
|
|
width >>= 1; height >>= 1;
|
|
block_w >>= 1; block_h >>= 1;
|
|
vp8_mc(s, 0, dst[1] + by_off * s->uvlinesize + bx_off,
|
|
ref_frame->data[1], &uvmv, x_off + bx_off, y_off + by_off,
|
|
block_w, block_h, width, height, s->uvlinesize,
|
|
s->put_pixels_tab[1 + (block_w == 4)]);
|
|
vp8_mc(s, 0, dst[2] + by_off * s->uvlinesize + bx_off,
|
|
ref_frame->data[2], &uvmv, x_off + bx_off, y_off + by_off,
|
|
block_w, block_h, width, height, s->uvlinesize,
|
|
s->put_pixels_tab[1 + (block_w == 4)]);
|
|
}
|
|
|
|
/* Fetch pixels for estimated mv 4 macroblocks ahead.
|
|
* Optimized for 64-byte cache lines. Inspired by ffh264 prefetch_motion. */
|
|
static av_always_inline void prefetch_motion(VP8Context *s, VP8Macroblock *mb, int mb_x, int mb_y, int mb_xy, int ref)
|
|
{
|
|
/* Don't prefetch refs that haven't been used very often this frame. */
|
|
if (s->ref_count[ref-1] > (mb_xy >> 5)) {
|
|
int x_off = mb_x << 4, y_off = mb_y << 4;
|
|
int mx = (mb->mv.x>>2) + x_off + 8;
|
|
int my = (mb->mv.y>>2) + y_off;
|
|
uint8_t **src= s->framep[ref]->data;
|
|
int off= mx + (my + (mb_x&3)*4)*s->linesize + 64;
|
|
s->dsp.prefetch(src[0]+off, s->linesize, 4);
|
|
off= (mx>>1) + ((my>>1) + (mb_x&7))*s->uvlinesize + 64;
|
|
s->dsp.prefetch(src[1]+off, src[2]-src[1], 2);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Apply motion vectors to prediction buffer, chapter 18.
|
|
*/
|
|
static av_always_inline
|
|
void inter_predict(VP8Context *s, uint8_t *dst[3], VP8Macroblock *mb,
|
|
int mb_x, int mb_y)
|
|
{
|
|
int x_off = mb_x << 4, y_off = mb_y << 4;
|
|
int width = 16*s->mb_width, height = 16*s->mb_height;
|
|
AVFrame *ref = s->framep[mb->ref_frame];
|
|
VP56mv *bmv = mb->bmv;
|
|
|
|
if (mb->mode < VP8_MVMODE_SPLIT) {
|
|
vp8_mc_part(s, dst, ref, x_off, y_off,
|
|
0, 0, 16, 16, width, height, &mb->mv);
|
|
} else switch (mb->partitioning) {
|
|
case VP8_SPLITMVMODE_4x4: {
|
|
int x, y;
|
|
VP56mv uvmv;
|
|
|
|
/* Y */
|
|
for (y = 0; y < 4; y++) {
|
|
for (x = 0; x < 4; x++) {
|
|
vp8_mc(s, 1, dst[0] + 4*y*s->linesize + x*4,
|
|
ref->data[0], &bmv[4*y + x],
|
|
4*x + x_off, 4*y + y_off, 4, 4,
|
|
width, height, s->linesize,
|
|
s->put_pixels_tab[2]);
|
|
}
|
|
}
|
|
|
|
/* U/V */
|
|
x_off >>= 1; y_off >>= 1; width >>= 1; height >>= 1;
|
|
for (y = 0; y < 2; y++) {
|
|
for (x = 0; x < 2; x++) {
|
|
uvmv.x = mb->bmv[ 2*y * 4 + 2*x ].x +
|
|
mb->bmv[ 2*y * 4 + 2*x+1].x +
|
|
mb->bmv[(2*y+1) * 4 + 2*x ].x +
|
|
mb->bmv[(2*y+1) * 4 + 2*x+1].x;
|
|
uvmv.y = mb->bmv[ 2*y * 4 + 2*x ].y +
|
|
mb->bmv[ 2*y * 4 + 2*x+1].y +
|
|
mb->bmv[(2*y+1) * 4 + 2*x ].y +
|
|
mb->bmv[(2*y+1) * 4 + 2*x+1].y;
|
|
uvmv.x = (uvmv.x + 2 + (uvmv.x >> (INT_BIT-1))) >> 2;
|
|
uvmv.y = (uvmv.y + 2 + (uvmv.y >> (INT_BIT-1))) >> 2;
|
|
if (s->profile == 3) {
|
|
uvmv.x &= ~7;
|
|
uvmv.y &= ~7;
|
|
}
|
|
vp8_mc(s, 0, dst[1] + 4*y*s->uvlinesize + x*4,
|
|
ref->data[1], &uvmv,
|
|
4*x + x_off, 4*y + y_off, 4, 4,
|
|
width, height, s->uvlinesize,
|
|
s->put_pixels_tab[2]);
|
|
vp8_mc(s, 0, dst[2] + 4*y*s->uvlinesize + x*4,
|
|
ref->data[2], &uvmv,
|
|
4*x + x_off, 4*y + y_off, 4, 4,
|
|
width, height, s->uvlinesize,
|
|
s->put_pixels_tab[2]);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case VP8_SPLITMVMODE_16x8:
|
|
vp8_mc_part(s, dst, ref, x_off, y_off,
|
|
0, 0, 16, 8, width, height, &bmv[0]);
|
|
vp8_mc_part(s, dst, ref, x_off, y_off,
|
|
0, 8, 16, 8, width, height, &bmv[1]);
|
|
break;
|
|
case VP8_SPLITMVMODE_8x16:
|
|
vp8_mc_part(s, dst, ref, x_off, y_off,
|
|
0, 0, 8, 16, width, height, &bmv[0]);
|
|
vp8_mc_part(s, dst, ref, x_off, y_off,
|
|
8, 0, 8, 16, width, height, &bmv[1]);
|
|
break;
|
|
case VP8_SPLITMVMODE_8x8:
|
|
vp8_mc_part(s, dst, ref, x_off, y_off,
|
|
0, 0, 8, 8, width, height, &bmv[0]);
|
|
vp8_mc_part(s, dst, ref, x_off, y_off,
|
|
8, 0, 8, 8, width, height, &bmv[1]);
|
|
vp8_mc_part(s, dst, ref, x_off, y_off,
|
|
0, 8, 8, 8, width, height, &bmv[2]);
|
|
vp8_mc_part(s, dst, ref, x_off, y_off,
|
|
8, 8, 8, 8, width, height, &bmv[3]);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static av_always_inline void idct_mb(VP8Context *s, uint8_t *dst[3], VP8Macroblock *mb)
|
|
{
|
|
int x, y, ch;
|
|
|
|
if (mb->mode != MODE_I4x4) {
|
|
uint8_t *y_dst = dst[0];
|
|
for (y = 0; y < 4; y++) {
|
|
uint32_t nnz4 = AV_RN32A(s->non_zero_count_cache[y]);
|
|
if (nnz4) {
|
|
if (nnz4&~0x01010101) {
|
|
for (x = 0; x < 4; x++) {
|
|
int nnz = s->non_zero_count_cache[y][x];
|
|
if (nnz) {
|
|
if (nnz == 1)
|
|
s->vp8dsp.vp8_idct_dc_add(y_dst+4*x, s->block[y][x], s->linesize);
|
|
else
|
|
s->vp8dsp.vp8_idct_add(y_dst+4*x, s->block[y][x], s->linesize);
|
|
}
|
|
}
|
|
} else {
|
|
s->vp8dsp.vp8_idct_dc_add4y(y_dst, s->block[y], s->linesize);
|
|
}
|
|
}
|
|
y_dst += 4*s->linesize;
|
|
}
|
|
}
|
|
|
|
for (ch = 0; ch < 2; ch++) {
|
|
uint32_t nnz4 = AV_RN32A(s->non_zero_count_cache[4+ch]);
|
|
if (nnz4) {
|
|
uint8_t *ch_dst = dst[1+ch];
|
|
if (nnz4&~0x01010101) {
|
|
for (y = 0; y < 2; y++) {
|
|
for (x = 0; x < 2; x++) {
|
|
int nnz = s->non_zero_count_cache[4+ch][(y<<1)+x];
|
|
if (nnz) {
|
|
if (nnz == 1)
|
|
s->vp8dsp.vp8_idct_dc_add(ch_dst+4*x, s->block[4+ch][(y<<1)+x], s->uvlinesize);
|
|
else
|
|
s->vp8dsp.vp8_idct_add(ch_dst+4*x, s->block[4+ch][(y<<1)+x], s->uvlinesize);
|
|
}
|
|
}
|
|
ch_dst += 4*s->uvlinesize;
|
|
}
|
|
} else {
|
|
s->vp8dsp.vp8_idct_dc_add4uv(ch_dst, s->block[4+ch], s->uvlinesize);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static av_always_inline void filter_level_for_mb(VP8Context *s, VP8Macroblock *mb, VP8FilterStrength *f )
|
|
{
|
|
int interior_limit, filter_level;
|
|
|
|
if (s->segmentation.enabled) {
|
|
filter_level = s->segmentation.filter_level[s->segment];
|
|
if (!s->segmentation.absolute_vals)
|
|
filter_level += s->filter.level;
|
|
} else
|
|
filter_level = s->filter.level;
|
|
|
|
if (s->lf_delta.enabled) {
|
|
filter_level += s->lf_delta.ref[mb->ref_frame];
|
|
|
|
if (mb->ref_frame == VP56_FRAME_CURRENT) {
|
|
if (mb->mode == MODE_I4x4)
|
|
filter_level += s->lf_delta.mode[0];
|
|
} else {
|
|
if (mb->mode == VP8_MVMODE_ZERO)
|
|
filter_level += s->lf_delta.mode[1];
|
|
else if (mb->mode == VP8_MVMODE_SPLIT)
|
|
filter_level += s->lf_delta.mode[3];
|
|
else
|
|
filter_level += s->lf_delta.mode[2];
|
|
}
|
|
}
|
|
filter_level = av_clip(filter_level, 0, 63);
|
|
|
|
interior_limit = filter_level;
|
|
if (s->filter.sharpness) {
|
|
interior_limit >>= s->filter.sharpness > 4 ? 2 : 1;
|
|
interior_limit = FFMIN(interior_limit, 9 - s->filter.sharpness);
|
|
}
|
|
interior_limit = FFMAX(interior_limit, 1);
|
|
|
|
f->filter_level = filter_level;
|
|
f->inner_limit = interior_limit;
|
|
f->inner_filter = !mb->skip || mb->mode == MODE_I4x4 || mb->mode == VP8_MVMODE_SPLIT;
|
|
}
|
|
|
|
static av_always_inline void filter_mb(VP8Context *s, uint8_t *dst[3], VP8FilterStrength *f, int mb_x, int mb_y)
|
|
{
|
|
int mbedge_lim, bedge_lim, hev_thresh;
|
|
int filter_level = f->filter_level;
|
|
int inner_limit = f->inner_limit;
|
|
int inner_filter = f->inner_filter;
|
|
int linesize = s->linesize;
|
|
int uvlinesize = s->uvlinesize;
|
|
|
|
if (!filter_level)
|
|
return;
|
|
|
|
mbedge_lim = 2*(filter_level+2) + inner_limit;
|
|
bedge_lim = 2* filter_level + inner_limit;
|
|
hev_thresh = filter_level >= 15;
|
|
|
|
if (s->keyframe) {
|
|
if (filter_level >= 40)
|
|
hev_thresh = 2;
|
|
} else {
|
|
if (filter_level >= 40)
|
|
hev_thresh = 3;
|
|
else if (filter_level >= 20)
|
|
hev_thresh = 2;
|
|
}
|
|
|
|
if (mb_x) {
|
|
s->vp8dsp.vp8_h_loop_filter16y(dst[0], linesize,
|
|
mbedge_lim, inner_limit, hev_thresh);
|
|
s->vp8dsp.vp8_h_loop_filter8uv(dst[1], dst[2], uvlinesize,
|
|
mbedge_lim, inner_limit, hev_thresh);
|
|
}
|
|
|
|
if (inner_filter) {
|
|
s->vp8dsp.vp8_h_loop_filter16y_inner(dst[0]+ 4, linesize, bedge_lim,
|
|
inner_limit, hev_thresh);
|
|
s->vp8dsp.vp8_h_loop_filter16y_inner(dst[0]+ 8, linesize, bedge_lim,
|
|
inner_limit, hev_thresh);
|
|
s->vp8dsp.vp8_h_loop_filter16y_inner(dst[0]+12, linesize, bedge_lim,
|
|
inner_limit, hev_thresh);
|
|
s->vp8dsp.vp8_h_loop_filter8uv_inner(dst[1] + 4, dst[2] + 4,
|
|
uvlinesize, bedge_lim,
|
|
inner_limit, hev_thresh);
|
|
}
|
|
|
|
if (mb_y) {
|
|
s->vp8dsp.vp8_v_loop_filter16y(dst[0], linesize,
|
|
mbedge_lim, inner_limit, hev_thresh);
|
|
s->vp8dsp.vp8_v_loop_filter8uv(dst[1], dst[2], uvlinesize,
|
|
mbedge_lim, inner_limit, hev_thresh);
|
|
}
|
|
|
|
if (inner_filter) {
|
|
s->vp8dsp.vp8_v_loop_filter16y_inner(dst[0]+ 4*linesize,
|
|
linesize, bedge_lim,
|
|
inner_limit, hev_thresh);
|
|
s->vp8dsp.vp8_v_loop_filter16y_inner(dst[0]+ 8*linesize,
|
|
linesize, bedge_lim,
|
|
inner_limit, hev_thresh);
|
|
s->vp8dsp.vp8_v_loop_filter16y_inner(dst[0]+12*linesize,
|
|
linesize, bedge_lim,
|
|
inner_limit, hev_thresh);
|
|
s->vp8dsp.vp8_v_loop_filter8uv_inner(dst[1] + 4 * uvlinesize,
|
|
dst[2] + 4 * uvlinesize,
|
|
uvlinesize, bedge_lim,
|
|
inner_limit, hev_thresh);
|
|
}
|
|
}
|
|
|
|
static av_always_inline void filter_mb_simple(VP8Context *s, uint8_t *dst, VP8FilterStrength *f, int mb_x, int mb_y)
|
|
{
|
|
int mbedge_lim, bedge_lim;
|
|
int filter_level = f->filter_level;
|
|
int inner_limit = f->inner_limit;
|
|
int inner_filter = f->inner_filter;
|
|
int linesize = s->linesize;
|
|
|
|
if (!filter_level)
|
|
return;
|
|
|
|
mbedge_lim = 2*(filter_level+2) + inner_limit;
|
|
bedge_lim = 2* filter_level + inner_limit;
|
|
|
|
if (mb_x)
|
|
s->vp8dsp.vp8_h_loop_filter_simple(dst, linesize, mbedge_lim);
|
|
if (inner_filter) {
|
|
s->vp8dsp.vp8_h_loop_filter_simple(dst+ 4, linesize, bedge_lim);
|
|
s->vp8dsp.vp8_h_loop_filter_simple(dst+ 8, linesize, bedge_lim);
|
|
s->vp8dsp.vp8_h_loop_filter_simple(dst+12, linesize, bedge_lim);
|
|
}
|
|
|
|
if (mb_y)
|
|
s->vp8dsp.vp8_v_loop_filter_simple(dst, linesize, mbedge_lim);
|
|
if (inner_filter) {
|
|
s->vp8dsp.vp8_v_loop_filter_simple(dst+ 4*linesize, linesize, bedge_lim);
|
|
s->vp8dsp.vp8_v_loop_filter_simple(dst+ 8*linesize, linesize, bedge_lim);
|
|
s->vp8dsp.vp8_v_loop_filter_simple(dst+12*linesize, linesize, bedge_lim);
|
|
}
|
|
}
|
|
|
|
static void filter_mb_row(VP8Context *s, int mb_y)
|
|
{
|
|
VP8FilterStrength *f = s->filter_strength;
|
|
uint8_t *dst[3] = {
|
|
s->framep[VP56_FRAME_CURRENT]->data[0] + 16*mb_y*s->linesize,
|
|
s->framep[VP56_FRAME_CURRENT]->data[1] + 8*mb_y*s->uvlinesize,
|
|
s->framep[VP56_FRAME_CURRENT]->data[2] + 8*mb_y*s->uvlinesize
|
|
};
|
|
int mb_x;
|
|
|
|
for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
|
|
backup_mb_border(s->top_border[mb_x+1], dst[0], dst[1], dst[2], s->linesize, s->uvlinesize, 0);
|
|
filter_mb(s, dst, f++, mb_x, mb_y);
|
|
dst[0] += 16;
|
|
dst[1] += 8;
|
|
dst[2] += 8;
|
|
}
|
|
}
|
|
|
|
static void filter_mb_row_simple(VP8Context *s, int mb_y)
|
|
{
|
|
VP8FilterStrength *f = s->filter_strength;
|
|
uint8_t *dst = s->framep[VP56_FRAME_CURRENT]->data[0] + 16*mb_y*s->linesize;
|
|
int mb_x;
|
|
|
|
for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
|
|
backup_mb_border(s->top_border[mb_x+1], dst, NULL, NULL, s->linesize, 0, 1);
|
|
filter_mb_simple(s, dst, f++, mb_x, mb_y);
|
|
dst += 16;
|
|
}
|
|
}
|
|
|
|
static int vp8_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
|
|
AVPacket *avpkt)
|
|
{
|
|
VP8Context *s = avctx->priv_data;
|
|
int ret, mb_x, mb_y, i, y, referenced;
|
|
enum AVDiscard skip_thresh;
|
|
AVFrame *av_uninit(curframe);
|
|
|
|
if ((ret = decode_frame_header(s, avpkt->data, avpkt->size)) < 0)
|
|
return ret;
|
|
|
|
referenced = s->update_last || s->update_golden == VP56_FRAME_CURRENT
|
|
|| s->update_altref == VP56_FRAME_CURRENT;
|
|
|
|
skip_thresh = !referenced ? AVDISCARD_NONREF :
|
|
!s->keyframe ? AVDISCARD_NONKEY : AVDISCARD_ALL;
|
|
|
|
if (avctx->skip_frame >= skip_thresh) {
|
|
s->invisible = 1;
|
|
goto skip_decode;
|
|
}
|
|
s->deblock_filter = s->filter.level && avctx->skip_loop_filter < skip_thresh;
|
|
|
|
for (i = 0; i < 4; i++)
|
|
if (&s->frames[i] != s->framep[VP56_FRAME_PREVIOUS] &&
|
|
&s->frames[i] != s->framep[VP56_FRAME_GOLDEN] &&
|
|
&s->frames[i] != s->framep[VP56_FRAME_GOLDEN2]) {
|
|
curframe = s->framep[VP56_FRAME_CURRENT] = &s->frames[i];
|
|
break;
|
|
}
|
|
if (curframe->data[0])
|
|
avctx->release_buffer(avctx, curframe);
|
|
|
|
curframe->key_frame = s->keyframe;
|
|
curframe->pict_type = s->keyframe ? FF_I_TYPE : FF_P_TYPE;
|
|
curframe->reference = referenced ? 3 : 0;
|
|
if ((ret = avctx->get_buffer(avctx, curframe))) {
|
|
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed!\n");
|
|
return ret;
|
|
}
|
|
|
|
// Given that arithmetic probabilities are updated every frame, it's quite likely
|
|
// that the values we have on a random interframe are complete junk if we didn't
|
|
// start decode on a keyframe. So just don't display anything rather than junk.
|
|
if (!s->keyframe && (!s->framep[VP56_FRAME_PREVIOUS] ||
|
|
!s->framep[VP56_FRAME_GOLDEN] ||
|
|
!s->framep[VP56_FRAME_GOLDEN2])) {
|
|
av_log(avctx, AV_LOG_WARNING, "Discarding interframe without a prior keyframe!\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
s->linesize = curframe->linesize[0];
|
|
s->uvlinesize = curframe->linesize[1];
|
|
|
|
if (!s->edge_emu_buffer)
|
|
s->edge_emu_buffer = av_malloc(21*s->linesize);
|
|
|
|
memset(s->top_nnz, 0, s->mb_width*sizeof(*s->top_nnz));
|
|
|
|
/* Zero macroblock structures for top/top-left prediction from outside the frame. */
|
|
memset(s->macroblocks + s->mb_height*2 - 1, 0, (s->mb_width+1)*sizeof(*s->macroblocks));
|
|
|
|
// top edge of 127 for intra prediction
|
|
if (!(avctx->flags & CODEC_FLAG_EMU_EDGE)) {
|
|
s->top_border[0][15] = s->top_border[0][23] = 127;
|
|
memset(s->top_border[1]-1, 127, s->mb_width*sizeof(*s->top_border)+1);
|
|
}
|
|
memset(s->ref_count, 0, sizeof(s->ref_count));
|
|
if (s->keyframe)
|
|
memset(s->intra4x4_pred_mode_top, DC_PRED, s->mb_width*4);
|
|
|
|
for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
|
|
VP56RangeCoder *c = &s->coeff_partition[mb_y & (s->num_coeff_partitions-1)];
|
|
VP8Macroblock *mb = s->macroblocks + (s->mb_height - mb_y - 1)*2;
|
|
int mb_xy = mb_y*s->mb_width;
|
|
uint8_t *dst[3] = {
|
|
curframe->data[0] + 16*mb_y*s->linesize,
|
|
curframe->data[1] + 8*mb_y*s->uvlinesize,
|
|
curframe->data[2] + 8*mb_y*s->uvlinesize
|
|
};
|
|
|
|
memset(mb - 1, 0, sizeof(*mb)); // zero left macroblock
|
|
memset(s->left_nnz, 0, sizeof(s->left_nnz));
|
|
AV_WN32A(s->intra4x4_pred_mode_left, DC_PRED*0x01010101);
|
|
|
|
// left edge of 129 for intra prediction
|
|
if (!(avctx->flags & CODEC_FLAG_EMU_EDGE)) {
|
|
for (i = 0; i < 3; i++)
|
|
for (y = 0; y < 16>>!!i; y++)
|
|
dst[i][y*curframe->linesize[i]-1] = 129;
|
|
if (mb_y == 1) // top left edge is also 129
|
|
s->top_border[0][15] = s->top_border[0][23] = s->top_border[0][31] = 129;
|
|
}
|
|
|
|
for (mb_x = 0; mb_x < s->mb_width; mb_x++, mb_xy++, mb++) {
|
|
/* Prefetch the current frame, 4 MBs ahead */
|
|
s->dsp.prefetch(dst[0] + (mb_x&3)*4*s->linesize + 64, s->linesize, 4);
|
|
s->dsp.prefetch(dst[1] + (mb_x&7)*s->uvlinesize + 64, dst[2] - dst[1], 2);
|
|
|
|
decode_mb_mode(s, mb, mb_x, mb_y, s->segmentation_map + mb_xy);
|
|
|
|
prefetch_motion(s, mb, mb_x, mb_y, mb_xy, VP56_FRAME_PREVIOUS);
|
|
|
|
if (!mb->skip)
|
|
decode_mb_coeffs(s, c, mb, s->top_nnz[mb_x], s->left_nnz);
|
|
|
|
if (mb->mode <= MODE_I4x4)
|
|
intra_predict(s, dst, mb, mb_x, mb_y);
|
|
else
|
|
inter_predict(s, dst, mb, mb_x, mb_y);
|
|
|
|
prefetch_motion(s, mb, mb_x, mb_y, mb_xy, VP56_FRAME_GOLDEN);
|
|
|
|
if (!mb->skip) {
|
|
idct_mb(s, dst, mb);
|
|
} else {
|
|
AV_ZERO64(s->left_nnz);
|
|
AV_WN64(s->top_nnz[mb_x], 0); // array of 9, so unaligned
|
|
|
|
// Reset DC block predictors if they would exist if the mb had coefficients
|
|
if (mb->mode != MODE_I4x4 && mb->mode != VP8_MVMODE_SPLIT) {
|
|
s->left_nnz[8] = 0;
|
|
s->top_nnz[mb_x][8] = 0;
|
|
}
|
|
}
|
|
|
|
if (s->deblock_filter)
|
|
filter_level_for_mb(s, mb, &s->filter_strength[mb_x]);
|
|
|
|
prefetch_motion(s, mb, mb_x, mb_y, mb_xy, VP56_FRAME_GOLDEN2);
|
|
|
|
dst[0] += 16;
|
|
dst[1] += 8;
|
|
dst[2] += 8;
|
|
}
|
|
if (s->deblock_filter) {
|
|
if (s->filter.simple)
|
|
filter_mb_row_simple(s, mb_y);
|
|
else
|
|
filter_mb_row(s, mb_y);
|
|
}
|
|
}
|
|
|
|
skip_decode:
|
|
// if future frames don't use the updated probabilities,
|
|
// reset them to the values we saved
|
|
if (!s->update_probabilities)
|
|
s->prob[0] = s->prob[1];
|
|
|
|
// check if golden and altref are swapped
|
|
if (s->update_altref == VP56_FRAME_GOLDEN &&
|
|
s->update_golden == VP56_FRAME_GOLDEN2)
|
|
FFSWAP(AVFrame *, s->framep[VP56_FRAME_GOLDEN], s->framep[VP56_FRAME_GOLDEN2]);
|
|
else {
|
|
if (s->update_altref != VP56_FRAME_NONE)
|
|
s->framep[VP56_FRAME_GOLDEN2] = s->framep[s->update_altref];
|
|
|
|
if (s->update_golden != VP56_FRAME_NONE)
|
|
s->framep[VP56_FRAME_GOLDEN] = s->framep[s->update_golden];
|
|
}
|
|
|
|
if (s->update_last) // move cur->prev
|
|
s->framep[VP56_FRAME_PREVIOUS] = s->framep[VP56_FRAME_CURRENT];
|
|
|
|
// release no longer referenced frames
|
|
for (i = 0; i < 4; i++)
|
|
if (s->frames[i].data[0] &&
|
|
&s->frames[i] != s->framep[VP56_FRAME_CURRENT] &&
|
|
&s->frames[i] != s->framep[VP56_FRAME_PREVIOUS] &&
|
|
&s->frames[i] != s->framep[VP56_FRAME_GOLDEN] &&
|
|
&s->frames[i] != s->framep[VP56_FRAME_GOLDEN2])
|
|
avctx->release_buffer(avctx, &s->frames[i]);
|
|
|
|
if (!s->invisible) {
|
|
*(AVFrame*)data = *s->framep[VP56_FRAME_CURRENT];
|
|
*data_size = sizeof(AVFrame);
|
|
}
|
|
|
|
return avpkt->size;
|
|
}
|
|
|
|
static av_cold int vp8_decode_init(AVCodecContext *avctx)
|
|
{
|
|
VP8Context *s = avctx->priv_data;
|
|
|
|
s->avctx = avctx;
|
|
avctx->pix_fmt = PIX_FMT_YUV420P;
|
|
|
|
dsputil_init(&s->dsp, avctx);
|
|
ff_h264_pred_init(&s->hpc, CODEC_ID_VP8);
|
|
ff_vp8dsp_init(&s->vp8dsp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static av_cold int vp8_decode_free(AVCodecContext *avctx)
|
|
{
|
|
vp8_decode_flush(avctx);
|
|
return 0;
|
|
}
|
|
|
|
AVCodec vp8_decoder = {
|
|
"vp8",
|
|
AVMEDIA_TYPE_VIDEO,
|
|
CODEC_ID_VP8,
|
|
sizeof(VP8Context),
|
|
vp8_decode_init,
|
|
NULL,
|
|
vp8_decode_free,
|
|
vp8_decode_frame,
|
|
CODEC_CAP_DR1,
|
|
.flush = vp8_decode_flush,
|
|
.long_name = NULL_IF_CONFIG_SMALL("On2 VP8"),
|
|
};
|