зеркало из https://github.com/mozilla/pjs.git
2944 строки
102 KiB
C
2944 строки
102 KiB
C
/********************************************************************
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* *
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* THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
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* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
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* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
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* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
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* *
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* THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
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* by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
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* *
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********************************************************************
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function:
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last mod: $Id: decode.c 16581 2009-09-25 22:56:16Z gmaxwell $
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********************************************************************/
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#include <stdlib.h>
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#include <string.h>
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#include <ogg/ogg.h>
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#include "decint.h"
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#if defined(OC_DUMP_IMAGES)
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# include <stdio.h>
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# include "png.h"
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#endif
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#if defined(HAVE_CAIRO)
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# include <cairo.h>
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#endif
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/*No post-processing.*/
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#define OC_PP_LEVEL_DISABLED (0)
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/*Keep track of DC qi for each block only.*/
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#define OC_PP_LEVEL_TRACKDCQI (1)
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/*Deblock the luma plane.*/
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#define OC_PP_LEVEL_DEBLOCKY (2)
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/*Dering the luma plane.*/
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#define OC_PP_LEVEL_DERINGY (3)
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/*Stronger luma plane deringing.*/
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#define OC_PP_LEVEL_SDERINGY (4)
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/*Deblock the chroma planes.*/
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#define OC_PP_LEVEL_DEBLOCKC (5)
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/*Dering the chroma planes.*/
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#define OC_PP_LEVEL_DERINGC (6)
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/*Stronger chroma plane deringing.*/
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#define OC_PP_LEVEL_SDERINGC (7)
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/*Maximum valid post-processing level.*/
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#define OC_PP_LEVEL_MAX (7)
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/*The mode alphabets for the various mode coding schemes.
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Scheme 0 uses a custom alphabet, which is not stored in this table.*/
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static const unsigned char OC_MODE_ALPHABETS[7][OC_NMODES]={
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/*Last MV dominates */
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{
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OC_MODE_INTER_MV_LAST,OC_MODE_INTER_MV_LAST2,OC_MODE_INTER_MV,
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OC_MODE_INTER_NOMV,OC_MODE_INTRA,OC_MODE_GOLDEN_NOMV,OC_MODE_GOLDEN_MV,
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OC_MODE_INTER_MV_FOUR
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},
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{
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OC_MODE_INTER_MV_LAST,OC_MODE_INTER_MV_LAST2,OC_MODE_INTER_NOMV,
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OC_MODE_INTER_MV,OC_MODE_INTRA,OC_MODE_GOLDEN_NOMV,OC_MODE_GOLDEN_MV,
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OC_MODE_INTER_MV_FOUR
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},
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{
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OC_MODE_INTER_MV_LAST,OC_MODE_INTER_MV,OC_MODE_INTER_MV_LAST2,
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OC_MODE_INTER_NOMV,OC_MODE_INTRA,OC_MODE_GOLDEN_NOMV,OC_MODE_GOLDEN_MV,
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OC_MODE_INTER_MV_FOUR
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},
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{
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OC_MODE_INTER_MV_LAST,OC_MODE_INTER_MV,OC_MODE_INTER_NOMV,
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OC_MODE_INTER_MV_LAST2,OC_MODE_INTRA,OC_MODE_GOLDEN_NOMV,
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OC_MODE_GOLDEN_MV,OC_MODE_INTER_MV_FOUR
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},
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/*No MV dominates.*/
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{
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OC_MODE_INTER_NOMV,OC_MODE_INTER_MV_LAST,OC_MODE_INTER_MV_LAST2,
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OC_MODE_INTER_MV,OC_MODE_INTRA,OC_MODE_GOLDEN_NOMV,OC_MODE_GOLDEN_MV,
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OC_MODE_INTER_MV_FOUR
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},
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{
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OC_MODE_INTER_NOMV,OC_MODE_GOLDEN_NOMV,OC_MODE_INTER_MV_LAST,
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OC_MODE_INTER_MV_LAST2,OC_MODE_INTER_MV,OC_MODE_INTRA,OC_MODE_GOLDEN_MV,
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OC_MODE_INTER_MV_FOUR
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},
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/*Default ordering.*/
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{
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OC_MODE_INTER_NOMV,OC_MODE_INTRA,OC_MODE_INTER_MV,OC_MODE_INTER_MV_LAST,
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OC_MODE_INTER_MV_LAST2,OC_MODE_GOLDEN_NOMV,OC_MODE_GOLDEN_MV,
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OC_MODE_INTER_MV_FOUR
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}
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};
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/*The original DCT tokens are extended and reordered during the construction of
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the Huffman tables.
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The extension means more bits can be read with fewer calls to the bitpacker
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during the Huffman decoding process (at the cost of larger Huffman tables),
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and fewer tokens require additional extra bits (reducing the average storage
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per decoded token).
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The revised ordering reveals essential information in the token value
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itself; specifically, whether or not there are additional extra bits to read
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and the parameter to which those extra bits are applied.
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The token is used to fetch a code word from the OC_DCT_CODE_WORD table below.
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The extra bits are added into code word at the bit position inferred from the
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token value, giving the final code word from which all required parameters
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are derived.
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The number of EOBs and the leading zero run length can be extracted directly.
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The coefficient magnitude is optionally negated before extraction, according
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to a 'flip' bit.*/
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/*The number of additional extra bits that are decoded with each of the
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internal DCT tokens.*/
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static const unsigned char OC_INTERNAL_DCT_TOKEN_EXTRA_BITS[15]={
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12,4,3,3,4,4,5,5,8,8,8,8,3,3,6
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};
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/*Whether or not an internal token needs any additional extra bits.*/
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#define OC_DCT_TOKEN_NEEDS_MORE(token) \
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(token<(sizeof(OC_INTERNAL_DCT_TOKEN_EXTRA_BITS)/ \
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sizeof(*OC_INTERNAL_DCT_TOKEN_EXTRA_BITS)))
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/*This token (OC_DCT_REPEAT_RUN3_TOKEN) requires more than 8 extra bits.*/
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#define OC_DCT_TOKEN_FAT_EOB (0)
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/*The number of EOBs to use for an end-of-frame token.
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Note: We want to set eobs to PTRDIFF_MAX here, but that requires C99, which
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is not yet available everywhere; this should be equivalent.*/
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#define OC_DCT_EOB_FINISH (~(size_t)0>>1)
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/*The location of the (6) run legth bits in the code word.
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These are placed at index 0 and given 8 bits (even though 6 would suffice)
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because it may be faster to extract the lower byte on some platforms.*/
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#define OC_DCT_CW_RLEN_SHIFT (0)
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/*The location of the (12) EOB bits in the code word.*/
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#define OC_DCT_CW_EOB_SHIFT (8)
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/*The location of the (1) flip bit in the code word.
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This must be right under the magnitude bits.*/
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#define OC_DCT_CW_FLIP_BIT (20)
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/*The location of the (11) token magnitude bits in the code word.
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These must be last, and rely on a sign-extending right shift.*/
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#define OC_DCT_CW_MAG_SHIFT (21)
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/*Pack the given fields into a code word.*/
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#define OC_DCT_CW_PACK(_eobs,_rlen,_mag,_flip) \
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((_eobs)<<OC_DCT_CW_EOB_SHIFT| \
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(_rlen)<<OC_DCT_CW_RLEN_SHIFT| \
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(_flip)<<OC_DCT_CW_FLIP_BIT| \
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(_mag)-(_flip)<<OC_DCT_CW_MAG_SHIFT)
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/*A special code word value that signals the end of the frame (a long EOB run
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of zero).*/
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#define OC_DCT_CW_FINISH (0)
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/*The position at which to insert the extra bits in the code word.
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We use this formulation because Intel has no useful cmov.
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A real architecture would probably do better with two of those.
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This translates to 11 instructions(!), and is _still_ faster than either a
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table lookup (just barely) or the naive double-ternary implementation (which
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gcc translates to a jump and a cmov).
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This assumes OC_DCT_CW_RLEN_SHIFT is zero, but could easily be reworked if
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you want to make one of the other shifts zero.*/
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#define OC_DCT_TOKEN_EB_POS(_token) \
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((OC_DCT_CW_EOB_SHIFT-OC_DCT_CW_MAG_SHIFT&-((_token)<2)) \
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+(OC_DCT_CW_MAG_SHIFT&-((_token)<12)))
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/*The code words for each internal token.
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See the notes at OC_DCT_TOKEN_MAP for the reasons why things are out of
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order.*/
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static const ogg_int32_t OC_DCT_CODE_WORD[92]={
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/*These tokens require additional extra bits for the EOB count.*/
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/*OC_DCT_REPEAT_RUN3_TOKEN (12 extra bits)*/
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OC_DCT_CW_FINISH,
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/*OC_DCT_REPEAT_RUN2_TOKEN (4 extra bits)*/
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OC_DCT_CW_PACK(16, 0, 0,0),
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/*These tokens require additional extra bits for the magnitude.*/
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/*OC_DCT_VAL_CAT5 (4 extra bits-1 already read)*/
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OC_DCT_CW_PACK( 0, 0, 13,0),
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OC_DCT_CW_PACK( 0, 0, 13,1),
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/*OC_DCT_VAL_CAT6 (5 extra bits-1 already read)*/
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OC_DCT_CW_PACK( 0, 0, 21,0),
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OC_DCT_CW_PACK( 0, 0, 21,1),
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/*OC_DCT_VAL_CAT7 (6 extra bits-1 already read)*/
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OC_DCT_CW_PACK( 0, 0, 37,0),
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OC_DCT_CW_PACK( 0, 0, 37,1),
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/*OC_DCT_VAL_CAT8 (10 extra bits-2 already read)*/
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OC_DCT_CW_PACK( 0, 0, 69,0),
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OC_DCT_CW_PACK( 0, 0,325,0),
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OC_DCT_CW_PACK( 0, 0, 69,1),
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OC_DCT_CW_PACK( 0, 0,325,1),
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/*These tokens require additional extra bits for the run length.*/
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/*OC_DCT_RUN_CAT1C (4 extra bits-1 already read)*/
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OC_DCT_CW_PACK( 0,10, +1,0),
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OC_DCT_CW_PACK( 0,10, -1,0),
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/*OC_DCT_ZRL_TOKEN (6 extra bits)
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Flip is set to distinguish this from OC_DCT_CW_FINISH.*/
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OC_DCT_CW_PACK( 0, 0, 0,1),
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/*The remaining tokens require no additional extra bits.*/
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/*OC_DCT_EOB1_TOKEN (0 extra bits)*/
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OC_DCT_CW_PACK( 1, 0, 0,0),
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/*OC_DCT_EOB2_TOKEN (0 extra bits)*/
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OC_DCT_CW_PACK( 2, 0, 0,0),
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/*OC_DCT_EOB3_TOKEN (0 extra bits)*/
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OC_DCT_CW_PACK( 3, 0, 0,0),
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/*OC_DCT_RUN_CAT1A (1 extra bit-1 already read)x5*/
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OC_DCT_CW_PACK( 0, 1, +1,0),
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OC_DCT_CW_PACK( 0, 1, -1,0),
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OC_DCT_CW_PACK( 0, 2, +1,0),
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OC_DCT_CW_PACK( 0, 2, -1,0),
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OC_DCT_CW_PACK( 0, 3, +1,0),
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OC_DCT_CW_PACK( 0, 3, -1,0),
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OC_DCT_CW_PACK( 0, 4, +1,0),
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OC_DCT_CW_PACK( 0, 4, -1,0),
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OC_DCT_CW_PACK( 0, 5, +1,0),
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OC_DCT_CW_PACK( 0, 5, -1,0),
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/*OC_DCT_RUN_CAT2A (2 extra bits-2 already read)*/
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OC_DCT_CW_PACK( 0, 1, +2,0),
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OC_DCT_CW_PACK( 0, 1, +3,0),
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OC_DCT_CW_PACK( 0, 1, -2,0),
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OC_DCT_CW_PACK( 0, 1, -3,0),
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/*OC_DCT_RUN_CAT1B (3 extra bits-3 already read)*/
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OC_DCT_CW_PACK( 0, 6, +1,0),
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OC_DCT_CW_PACK( 0, 7, +1,0),
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OC_DCT_CW_PACK( 0, 8, +1,0),
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OC_DCT_CW_PACK( 0, 9, +1,0),
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OC_DCT_CW_PACK( 0, 6, -1,0),
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OC_DCT_CW_PACK( 0, 7, -1,0),
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OC_DCT_CW_PACK( 0, 8, -1,0),
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OC_DCT_CW_PACK( 0, 9, -1,0),
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/*OC_DCT_RUN_CAT2B (3 extra bits-3 already read)*/
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OC_DCT_CW_PACK( 0, 2, +2,0),
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OC_DCT_CW_PACK( 0, 3, +2,0),
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OC_DCT_CW_PACK( 0, 2, +3,0),
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OC_DCT_CW_PACK( 0, 3, +3,0),
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OC_DCT_CW_PACK( 0, 2, -2,0),
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OC_DCT_CW_PACK( 0, 3, -2,0),
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OC_DCT_CW_PACK( 0, 2, -3,0),
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OC_DCT_CW_PACK( 0, 3, -3,0),
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/*OC_DCT_SHORT_ZRL_TOKEN (3 extra bits-3 already read)
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Flip is set on the first one to distinguish it from OC_DCT_CW_FINISH.*/
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OC_DCT_CW_PACK( 0, 0, 0,1),
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OC_DCT_CW_PACK( 0, 1, 0,0),
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OC_DCT_CW_PACK( 0, 2, 0,0),
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OC_DCT_CW_PACK( 0, 3, 0,0),
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OC_DCT_CW_PACK( 0, 4, 0,0),
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OC_DCT_CW_PACK( 0, 5, 0,0),
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OC_DCT_CW_PACK( 0, 6, 0,0),
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OC_DCT_CW_PACK( 0, 7, 0,0),
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/*OC_ONE_TOKEN (0 extra bits)*/
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OC_DCT_CW_PACK( 0, 0, +1,0),
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/*OC_MINUS_ONE_TOKEN (0 extra bits)*/
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OC_DCT_CW_PACK( 0, 0, -1,0),
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/*OC_TWO_TOKEN (0 extra bits)*/
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OC_DCT_CW_PACK( 0, 0, +2,0),
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/*OC_MINUS_TWO_TOKEN (0 extra bits)*/
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OC_DCT_CW_PACK( 0, 0, -2,0),
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/*OC_DCT_VAL_CAT2 (1 extra bit-1 already read)x4*/
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OC_DCT_CW_PACK( 0, 0, +3,0),
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OC_DCT_CW_PACK( 0, 0, -3,0),
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OC_DCT_CW_PACK( 0, 0, +4,0),
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OC_DCT_CW_PACK( 0, 0, -4,0),
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OC_DCT_CW_PACK( 0, 0, +5,0),
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OC_DCT_CW_PACK( 0, 0, -5,0),
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OC_DCT_CW_PACK( 0, 0, +6,0),
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OC_DCT_CW_PACK( 0, 0, -6,0),
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/*OC_DCT_VAL_CAT3 (2 extra bits-2 already read)*/
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OC_DCT_CW_PACK( 0, 0, +7,0),
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OC_DCT_CW_PACK( 0, 0, +8,0),
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OC_DCT_CW_PACK( 0, 0, -7,0),
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OC_DCT_CW_PACK( 0, 0, -8,0),
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/*OC_DCT_VAL_CAT4 (3 extra bits-3 already read)*/
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OC_DCT_CW_PACK( 0, 0, +9,0),
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OC_DCT_CW_PACK( 0, 0,+10,0),
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OC_DCT_CW_PACK( 0, 0,+11,0),
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OC_DCT_CW_PACK( 0, 0,+12,0),
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OC_DCT_CW_PACK( 0, 0, -9,0),
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OC_DCT_CW_PACK( 0, 0,-10,0),
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OC_DCT_CW_PACK( 0, 0,-11,0),
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OC_DCT_CW_PACK( 0, 0,-12,0),
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/*OC_DCT_REPEAT_RUN1_TOKEN (3 extra bits-3 already read)*/
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OC_DCT_CW_PACK( 8, 0, 0,0),
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OC_DCT_CW_PACK( 9, 0, 0,0),
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OC_DCT_CW_PACK(10, 0, 0,0),
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OC_DCT_CW_PACK(11, 0, 0,0),
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OC_DCT_CW_PACK(12, 0, 0,0),
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OC_DCT_CW_PACK(13, 0, 0,0),
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OC_DCT_CW_PACK(14, 0, 0,0),
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OC_DCT_CW_PACK(15, 0, 0,0),
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/*OC_DCT_REPEAT_RUN0_TOKEN (2 extra bits-2 already read)*/
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OC_DCT_CW_PACK( 4, 0, 0,0),
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OC_DCT_CW_PACK( 5, 0, 0,0),
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OC_DCT_CW_PACK( 6, 0, 0,0),
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OC_DCT_CW_PACK( 7, 0, 0,0),
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};
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static int oc_sb_run_unpack(oc_pack_buf *_opb){
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long bits;
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int ret;
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/*Coding scheme:
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Codeword Run Length
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0 1
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10x 2-3
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110x 4-5
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1110xx 6-9
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11110xxx 10-17
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111110xxxx 18-33
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111111xxxxxxxxxxxx 34-4129*/
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bits=oc_pack_read1(_opb);
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if(bits==0)return 1;
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bits=oc_pack_read(_opb,2);
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if((bits&2)==0)return 2+(int)bits;
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else if((bits&1)==0){
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bits=oc_pack_read1(_opb);
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return 4+(int)bits;
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}
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bits=oc_pack_read(_opb,3);
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if((bits&4)==0)return 6+(int)bits;
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else if((bits&2)==0){
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ret=10+((bits&1)<<2);
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bits=oc_pack_read(_opb,2);
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return ret+(int)bits;
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}
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else if((bits&1)==0){
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bits=oc_pack_read(_opb,4);
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return 18+(int)bits;
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}
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bits=oc_pack_read(_opb,12);
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return 34+(int)bits;
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}
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static int oc_block_run_unpack(oc_pack_buf *_opb){
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long bits;
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long bits2;
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/*Coding scheme:
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Codeword Run Length
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0x 1-2
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10x 3-4
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110x 5-6
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1110xx 7-10
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11110xx 11-14
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11111xxxx 15-30*/
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bits=oc_pack_read(_opb,2);
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if((bits&2)==0)return 1+(int)bits;
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else if((bits&1)==0){
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bits=oc_pack_read1(_opb);
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return 3+(int)bits;
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}
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bits=oc_pack_read(_opb,2);
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if((bits&2)==0)return 5+(int)bits;
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else if((bits&1)==0){
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bits=oc_pack_read(_opb,2);
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return 7+(int)bits;
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}
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bits=oc_pack_read(_opb,3);
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if((bits&4)==0)return 11+bits;
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bits2=oc_pack_read(_opb,2);
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return 15+((bits&3)<<2)+bits2;
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}
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static int oc_dec_init(oc_dec_ctx *_dec,const th_info *_info,
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const th_setup_info *_setup){
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int qti;
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int pli;
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int qi;
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int ret;
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ret=oc_state_init(&_dec->state,_info,3);
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if(ret<0)return ret;
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ret=oc_huff_trees_copy(_dec->huff_tables,
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(const oc_huff_node *const *)_setup->huff_tables);
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if(ret<0){
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oc_state_clear(&_dec->state);
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return ret;
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}
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/*For each fragment, allocate one byte for every DCT coefficient token, plus
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one byte for extra-bits for each token, plus one more byte for the long
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EOB run, just in case it's the very last token and has a run length of
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one.*/
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_dec->dct_tokens=(unsigned char *)_ogg_malloc((64+64+1)*
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_dec->state.nfrags*sizeof(_dec->dct_tokens[0]));
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if(_dec->dct_tokens==NULL){
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oc_huff_trees_clear(_dec->huff_tables);
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oc_state_clear(&_dec->state);
|
|
return TH_EFAULT;
|
|
}
|
|
for(qi=0;qi<64;qi++)for(pli=0;pli<3;pli++)for(qti=0;qti<2;qti++){
|
|
_dec->state.dequant_tables[qi][pli][qti]=
|
|
_dec->state.dequant_table_data[qi][pli][qti];
|
|
}
|
|
oc_dequant_tables_init(_dec->state.dequant_tables,_dec->pp_dc_scale,
|
|
&_setup->qinfo);
|
|
for(qi=0;qi<64;qi++){
|
|
int qsum;
|
|
qsum=0;
|
|
for(qti=0;qti<2;qti++)for(pli=0;pli<3;pli++){
|
|
qsum+=_dec->state.dequant_tables[qti][pli][qi][12]+
|
|
_dec->state.dequant_tables[qti][pli][qi][17]+
|
|
_dec->state.dequant_tables[qti][pli][qi][18]+
|
|
_dec->state.dequant_tables[qti][pli][qi][24]<<(pli==0);
|
|
}
|
|
_dec->pp_sharp_mod[qi]=-(qsum>>11);
|
|
}
|
|
memcpy(_dec->state.loop_filter_limits,_setup->qinfo.loop_filter_limits,
|
|
sizeof(_dec->state.loop_filter_limits));
|
|
_dec->pp_level=OC_PP_LEVEL_DISABLED;
|
|
_dec->dc_qis=NULL;
|
|
_dec->variances=NULL;
|
|
_dec->pp_frame_data=NULL;
|
|
_dec->stripe_cb.ctx=NULL;
|
|
_dec->stripe_cb.stripe_decoded=NULL;
|
|
#if defined(HAVE_CAIRO)
|
|
_dec->telemetry=0;
|
|
_dec->telemetry_bits=0;
|
|
_dec->telemetry_qi=0;
|
|
_dec->telemetry_mbmode=0;
|
|
_dec->telemetry_mv=0;
|
|
_dec->telemetry_frame_data=NULL;
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
static void oc_dec_clear(oc_dec_ctx *_dec){
|
|
#if defined(HAVE_CAIRO)
|
|
_ogg_free(_dec->telemetry_frame_data);
|
|
#endif
|
|
_ogg_free(_dec->pp_frame_data);
|
|
_ogg_free(_dec->variances);
|
|
_ogg_free(_dec->dc_qis);
|
|
_ogg_free(_dec->dct_tokens);
|
|
oc_huff_trees_clear(_dec->huff_tables);
|
|
oc_state_clear(&_dec->state);
|
|
}
|
|
|
|
|
|
static int oc_dec_frame_header_unpack(oc_dec_ctx *_dec){
|
|
long val;
|
|
/*Check to make sure this is a data packet.*/
|
|
val=oc_pack_read1(&_dec->opb);
|
|
if(val!=0)return TH_EBADPACKET;
|
|
/*Read in the frame type (I or P).*/
|
|
val=oc_pack_read1(&_dec->opb);
|
|
_dec->state.frame_type=(int)val;
|
|
/*Read in the qi list.*/
|
|
val=oc_pack_read(&_dec->opb,6);
|
|
_dec->state.qis[0]=(unsigned char)val;
|
|
val=oc_pack_read1(&_dec->opb);
|
|
if(!val)_dec->state.nqis=1;
|
|
else{
|
|
val=oc_pack_read(&_dec->opb,6);
|
|
_dec->state.qis[1]=(unsigned char)val;
|
|
val=oc_pack_read1(&_dec->opb);
|
|
if(!val)_dec->state.nqis=2;
|
|
else{
|
|
val=oc_pack_read(&_dec->opb,6);
|
|
_dec->state.qis[2]=(unsigned char)val;
|
|
_dec->state.nqis=3;
|
|
}
|
|
}
|
|
if(_dec->state.frame_type==OC_INTRA_FRAME){
|
|
/*Keyframes have 3 unused configuration bits, holdovers from VP3 days.
|
|
Most of the other unused bits in the VP3 headers were eliminated.
|
|
I don't know why these remain.*/
|
|
/*I wanted to eliminate wasted bits, but not all config wiggle room
|
|
--Monty.*/
|
|
val=oc_pack_read(&_dec->opb,3);
|
|
if(val!=0)return TH_EIMPL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*Mark all fragments as coded and in OC_MODE_INTRA.
|
|
This also builds up the coded fragment list (in coded order), and clears the
|
|
uncoded fragment list.
|
|
It does not update the coded macro block list nor the super block flags, as
|
|
those are not used when decoding INTRA frames.*/
|
|
static void oc_dec_mark_all_intra(oc_dec_ctx *_dec){
|
|
const oc_sb_map *sb_maps;
|
|
const oc_sb_flags *sb_flags;
|
|
oc_fragment *frags;
|
|
ptrdiff_t *coded_fragis;
|
|
ptrdiff_t ncoded_fragis;
|
|
ptrdiff_t prev_ncoded_fragis;
|
|
unsigned nsbs;
|
|
unsigned sbi;
|
|
int pli;
|
|
coded_fragis=_dec->state.coded_fragis;
|
|
prev_ncoded_fragis=ncoded_fragis=0;
|
|
sb_maps=(const oc_sb_map *)_dec->state.sb_maps;
|
|
sb_flags=_dec->state.sb_flags;
|
|
frags=_dec->state.frags;
|
|
sbi=nsbs=0;
|
|
for(pli=0;pli<3;pli++){
|
|
nsbs+=_dec->state.fplanes[pli].nsbs;
|
|
for(;sbi<nsbs;sbi++){
|
|
int quadi;
|
|
for(quadi=0;quadi<4;quadi++)if(sb_flags[sbi].quad_valid&1<<quadi){
|
|
int bi;
|
|
for(bi=0;bi<4;bi++){
|
|
ptrdiff_t fragi;
|
|
fragi=sb_maps[sbi][quadi][bi];
|
|
if(fragi>=0){
|
|
frags[fragi].coded=1;
|
|
frags[fragi].mb_mode=OC_MODE_INTRA;
|
|
coded_fragis[ncoded_fragis++]=fragi;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
_dec->state.ncoded_fragis[pli]=ncoded_fragis-prev_ncoded_fragis;
|
|
prev_ncoded_fragis=ncoded_fragis;
|
|
}
|
|
_dec->state.ntotal_coded_fragis=ncoded_fragis;
|
|
}
|
|
|
|
/*Decodes the bit flags indicating whether each super block is partially coded
|
|
or not.
|
|
Return: The number of partially coded super blocks.*/
|
|
static unsigned oc_dec_partial_sb_flags_unpack(oc_dec_ctx *_dec){
|
|
oc_sb_flags *sb_flags;
|
|
unsigned nsbs;
|
|
unsigned sbi;
|
|
unsigned npartial;
|
|
unsigned run_count;
|
|
long val;
|
|
int flag;
|
|
val=oc_pack_read1(&_dec->opb);
|
|
flag=(int)val;
|
|
sb_flags=_dec->state.sb_flags;
|
|
nsbs=_dec->state.nsbs;
|
|
sbi=npartial=0;
|
|
while(sbi<nsbs){
|
|
int full_run;
|
|
run_count=oc_sb_run_unpack(&_dec->opb);
|
|
full_run=run_count>=4129;
|
|
do{
|
|
sb_flags[sbi].coded_partially=flag;
|
|
sb_flags[sbi].coded_fully=0;
|
|
npartial+=flag;
|
|
sbi++;
|
|
}
|
|
while(--run_count>0&&sbi<nsbs);
|
|
if(full_run&&sbi<nsbs){
|
|
val=oc_pack_read1(&_dec->opb);
|
|
flag=(int)val;
|
|
}
|
|
else flag=!flag;
|
|
}
|
|
/*TODO: run_count should be 0 here.
|
|
If it's not, we should issue a warning of some kind.*/
|
|
return npartial;
|
|
}
|
|
|
|
/*Decodes the bit flags for whether or not each non-partially-coded super
|
|
block is fully coded or not.
|
|
This function should only be called if there is at least one
|
|
non-partially-coded super block.
|
|
Return: The number of partially coded super blocks.*/
|
|
static void oc_dec_coded_sb_flags_unpack(oc_dec_ctx *_dec){
|
|
oc_sb_flags *sb_flags;
|
|
unsigned nsbs;
|
|
unsigned sbi;
|
|
unsigned run_count;
|
|
long val;
|
|
int flag;
|
|
sb_flags=_dec->state.sb_flags;
|
|
nsbs=_dec->state.nsbs;
|
|
/*Skip partially coded super blocks.*/
|
|
for(sbi=0;sb_flags[sbi].coded_partially;sbi++);
|
|
val=oc_pack_read1(&_dec->opb);
|
|
flag=(int)val;
|
|
do{
|
|
int full_run;
|
|
run_count=oc_sb_run_unpack(&_dec->opb);
|
|
full_run=run_count>=4129;
|
|
for(;sbi<nsbs;sbi++){
|
|
if(sb_flags[sbi].coded_partially)continue;
|
|
if(run_count--<=0)break;
|
|
sb_flags[sbi].coded_fully=flag;
|
|
}
|
|
if(full_run&&sbi<nsbs){
|
|
val=oc_pack_read1(&_dec->opb);
|
|
flag=(int)val;
|
|
}
|
|
else flag=!flag;
|
|
}
|
|
while(sbi<nsbs);
|
|
/*TODO: run_count should be 0 here.
|
|
If it's not, we should issue a warning of some kind.*/
|
|
}
|
|
|
|
static void oc_dec_coded_flags_unpack(oc_dec_ctx *_dec){
|
|
const oc_sb_map *sb_maps;
|
|
const oc_sb_flags *sb_flags;
|
|
oc_fragment *frags;
|
|
unsigned nsbs;
|
|
unsigned sbi;
|
|
unsigned npartial;
|
|
long val;
|
|
int pli;
|
|
int flag;
|
|
int run_count;
|
|
ptrdiff_t *coded_fragis;
|
|
ptrdiff_t *uncoded_fragis;
|
|
ptrdiff_t ncoded_fragis;
|
|
ptrdiff_t nuncoded_fragis;
|
|
ptrdiff_t prev_ncoded_fragis;
|
|
npartial=oc_dec_partial_sb_flags_unpack(_dec);
|
|
if(npartial<_dec->state.nsbs)oc_dec_coded_sb_flags_unpack(_dec);
|
|
if(npartial>0){
|
|
val=oc_pack_read1(&_dec->opb);
|
|
flag=!(int)val;
|
|
}
|
|
else flag=0;
|
|
sb_maps=(const oc_sb_map *)_dec->state.sb_maps;
|
|
sb_flags=_dec->state.sb_flags;
|
|
frags=_dec->state.frags;
|
|
sbi=nsbs=run_count=0;
|
|
coded_fragis=_dec->state.coded_fragis;
|
|
uncoded_fragis=coded_fragis+_dec->state.nfrags;
|
|
prev_ncoded_fragis=ncoded_fragis=nuncoded_fragis=0;
|
|
for(pli=0;pli<3;pli++){
|
|
nsbs+=_dec->state.fplanes[pli].nsbs;
|
|
for(;sbi<nsbs;sbi++){
|
|
int quadi;
|
|
for(quadi=0;quadi<4;quadi++)if(sb_flags[sbi].quad_valid&1<<quadi){
|
|
int bi;
|
|
for(bi=0;bi<4;bi++){
|
|
ptrdiff_t fragi;
|
|
fragi=sb_maps[sbi][quadi][bi];
|
|
if(fragi>=0){
|
|
int coded;
|
|
if(sb_flags[sbi].coded_fully)coded=1;
|
|
else if(!sb_flags[sbi].coded_partially)coded=0;
|
|
else{
|
|
if(run_count<=0){
|
|
run_count=oc_block_run_unpack(&_dec->opb);
|
|
flag=!flag;
|
|
}
|
|
run_count--;
|
|
coded=flag;
|
|
}
|
|
if(coded)coded_fragis[ncoded_fragis++]=fragi;
|
|
else *(uncoded_fragis-++nuncoded_fragis)=fragi;
|
|
frags[fragi].coded=coded;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
_dec->state.ncoded_fragis[pli]=ncoded_fragis-prev_ncoded_fragis;
|
|
prev_ncoded_fragis=ncoded_fragis;
|
|
}
|
|
_dec->state.ntotal_coded_fragis=ncoded_fragis;
|
|
/*TODO: run_count should be 0 here.
|
|
If it's not, we should issue a warning of some kind.*/
|
|
}
|
|
|
|
|
|
|
|
typedef int (*oc_mode_unpack_func)(oc_pack_buf *_opb);
|
|
|
|
static int oc_vlc_mode_unpack(oc_pack_buf *_opb){
|
|
long val;
|
|
int i;
|
|
for(i=0;i<7;i++){
|
|
val=oc_pack_read1(_opb);
|
|
if(!val)break;
|
|
}
|
|
return i;
|
|
}
|
|
|
|
static int oc_clc_mode_unpack(oc_pack_buf *_opb){
|
|
long val;
|
|
val=oc_pack_read(_opb,3);
|
|
return (int)val;
|
|
}
|
|
|
|
/*Unpacks the list of macro block modes for INTER frames.*/
|
|
static void oc_dec_mb_modes_unpack(oc_dec_ctx *_dec){
|
|
const oc_mb_map *mb_maps;
|
|
signed char *mb_modes;
|
|
const oc_fragment *frags;
|
|
const unsigned char *alphabet;
|
|
unsigned char scheme0_alphabet[8];
|
|
oc_mode_unpack_func mode_unpack;
|
|
size_t nmbs;
|
|
size_t mbi;
|
|
long val;
|
|
int mode_scheme;
|
|
val=oc_pack_read(&_dec->opb,3);
|
|
mode_scheme=(int)val;
|
|
if(mode_scheme==0){
|
|
int mi;
|
|
/*Just in case, initialize the modes to something.
|
|
If the bitstream doesn't contain each index exactly once, it's likely
|
|
corrupt and the rest of the packet is garbage anyway, but this way we
|
|
won't crash, and we'll decode SOMETHING.*/
|
|
/*LOOP VECTORIZES*/
|
|
for(mi=0;mi<OC_NMODES;mi++)scheme0_alphabet[mi]=OC_MODE_INTER_NOMV;
|
|
for(mi=0;mi<OC_NMODES;mi++){
|
|
val=oc_pack_read(&_dec->opb,3);
|
|
scheme0_alphabet[val]=OC_MODE_ALPHABETS[6][mi];
|
|
}
|
|
alphabet=scheme0_alphabet;
|
|
}
|
|
else alphabet=OC_MODE_ALPHABETS[mode_scheme-1];
|
|
if(mode_scheme==7)mode_unpack=oc_clc_mode_unpack;
|
|
else mode_unpack=oc_vlc_mode_unpack;
|
|
mb_modes=_dec->state.mb_modes;
|
|
mb_maps=(const oc_mb_map *)_dec->state.mb_maps;
|
|
nmbs=_dec->state.nmbs;
|
|
frags=_dec->state.frags;
|
|
for(mbi=0;mbi<nmbs;mbi++){
|
|
if(mb_modes[mbi]!=OC_MODE_INVALID){
|
|
int bi;
|
|
/*Check for a coded luma block in this macro block.*/
|
|
for(bi=0;bi<4&&!frags[mb_maps[mbi][0][bi]].coded;bi++);
|
|
/*We found one, decode a mode.*/
|
|
if(bi<4)mb_modes[mbi]=alphabet[(*mode_unpack)(&_dec->opb)];
|
|
/*There were none: INTER_NOMV is forced.*/
|
|
else mb_modes[mbi]=OC_MODE_INTER_NOMV;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
typedef int (*oc_mv_comp_unpack_func)(oc_pack_buf *_opb);
|
|
|
|
static int oc_vlc_mv_comp_unpack(oc_pack_buf *_opb){
|
|
long bits;
|
|
int mask;
|
|
int mv;
|
|
bits=oc_pack_read(_opb,3);
|
|
switch(bits){
|
|
case 0:return 0;
|
|
case 1:return 1;
|
|
case 2:return -1;
|
|
case 3:
|
|
case 4:{
|
|
mv=(int)(bits-1);
|
|
bits=oc_pack_read1(_opb);
|
|
}break;
|
|
/*case 5:
|
|
case 6:
|
|
case 7:*/
|
|
default:{
|
|
mv=1<<bits-3;
|
|
bits=oc_pack_read(_opb,bits-2);
|
|
mv+=(int)(bits>>1);
|
|
bits&=1;
|
|
}break;
|
|
}
|
|
mask=-(int)bits;
|
|
return mv+mask^mask;
|
|
}
|
|
|
|
static int oc_clc_mv_comp_unpack(oc_pack_buf *_opb){
|
|
long bits;
|
|
int mask;
|
|
int mv;
|
|
bits=oc_pack_read(_opb,6);
|
|
mv=(int)bits>>1;
|
|
mask=-((int)bits&1);
|
|
return mv+mask^mask;
|
|
}
|
|
|
|
/*Unpacks the list of motion vectors for INTER frames, and propagtes the macro
|
|
block modes and motion vectors to the individual fragments.*/
|
|
static void oc_dec_mv_unpack_and_frag_modes_fill(oc_dec_ctx *_dec){
|
|
const oc_mb_map *mb_maps;
|
|
const signed char *mb_modes;
|
|
oc_set_chroma_mvs_func set_chroma_mvs;
|
|
oc_mv_comp_unpack_func mv_comp_unpack;
|
|
oc_fragment *frags;
|
|
oc_mv *frag_mvs;
|
|
const unsigned char *map_idxs;
|
|
int map_nidxs;
|
|
oc_mv last_mv[2];
|
|
oc_mv cbmvs[4];
|
|
size_t nmbs;
|
|
size_t mbi;
|
|
long val;
|
|
set_chroma_mvs=OC_SET_CHROMA_MVS_TABLE[_dec->state.info.pixel_fmt];
|
|
val=oc_pack_read1(&_dec->opb);
|
|
mv_comp_unpack=val?oc_clc_mv_comp_unpack:oc_vlc_mv_comp_unpack;
|
|
map_idxs=OC_MB_MAP_IDXS[_dec->state.info.pixel_fmt];
|
|
map_nidxs=OC_MB_MAP_NIDXS[_dec->state.info.pixel_fmt];
|
|
memset(last_mv,0,sizeof(last_mv));
|
|
frags=_dec->state.frags;
|
|
frag_mvs=_dec->state.frag_mvs;
|
|
mb_maps=(const oc_mb_map *)_dec->state.mb_maps;
|
|
mb_modes=_dec->state.mb_modes;
|
|
nmbs=_dec->state.nmbs;
|
|
for(mbi=0;mbi<nmbs;mbi++){
|
|
int mb_mode;
|
|
mb_mode=mb_modes[mbi];
|
|
if(mb_mode!=OC_MODE_INVALID){
|
|
oc_mv mbmv;
|
|
ptrdiff_t fragi;
|
|
int coded[13];
|
|
int codedi;
|
|
int ncoded;
|
|
int mapi;
|
|
int mapii;
|
|
/*Search for at least one coded fragment.*/
|
|
ncoded=mapii=0;
|
|
do{
|
|
mapi=map_idxs[mapii];
|
|
fragi=mb_maps[mbi][mapi>>2][mapi&3];
|
|
if(frags[fragi].coded)coded[ncoded++]=mapi;
|
|
}
|
|
while(++mapii<map_nidxs);
|
|
if(ncoded<=0)continue;
|
|
switch(mb_mode){
|
|
case OC_MODE_INTER_MV_FOUR:{
|
|
oc_mv lbmvs[4];
|
|
int bi;
|
|
/*Mark the tail of the list, so we don't accidentally go past it.*/
|
|
coded[ncoded]=-1;
|
|
for(bi=codedi=0;bi<4;bi++){
|
|
if(coded[codedi]==bi){
|
|
codedi++;
|
|
fragi=mb_maps[mbi][0][bi];
|
|
frags[fragi].mb_mode=mb_mode;
|
|
lbmvs[bi][0]=(signed char)(*mv_comp_unpack)(&_dec->opb);
|
|
lbmvs[bi][1]=(signed char)(*mv_comp_unpack)(&_dec->opb);
|
|
memcpy(frag_mvs[fragi],lbmvs[bi],sizeof(lbmvs[bi]));
|
|
}
|
|
else lbmvs[bi][0]=lbmvs[bi][1]=0;
|
|
}
|
|
if(codedi>0){
|
|
memcpy(last_mv[1],last_mv[0],sizeof(last_mv[1]));
|
|
memcpy(last_mv[0],lbmvs[coded[codedi-1]],sizeof(last_mv[0]));
|
|
}
|
|
if(codedi<ncoded){
|
|
(*set_chroma_mvs)(cbmvs,(const oc_mv *)lbmvs);
|
|
for(;codedi<ncoded;codedi++){
|
|
mapi=coded[codedi];
|
|
bi=mapi&3;
|
|
fragi=mb_maps[mbi][mapi>>2][bi];
|
|
frags[fragi].mb_mode=mb_mode;
|
|
memcpy(frag_mvs[fragi],cbmvs[bi],sizeof(cbmvs[bi]));
|
|
}
|
|
}
|
|
}break;
|
|
case OC_MODE_INTER_MV:{
|
|
memcpy(last_mv[1],last_mv[0],sizeof(last_mv[1]));
|
|
mbmv[0]=last_mv[0][0]=(signed char)(*mv_comp_unpack)(&_dec->opb);
|
|
mbmv[1]=last_mv[0][1]=(signed char)(*mv_comp_unpack)(&_dec->opb);
|
|
}break;
|
|
case OC_MODE_INTER_MV_LAST:memcpy(mbmv,last_mv[0],sizeof(mbmv));break;
|
|
case OC_MODE_INTER_MV_LAST2:{
|
|
memcpy(mbmv,last_mv[1],sizeof(mbmv));
|
|
memcpy(last_mv[1],last_mv[0],sizeof(last_mv[1]));
|
|
memcpy(last_mv[0],mbmv,sizeof(last_mv[0]));
|
|
}break;
|
|
case OC_MODE_GOLDEN_MV:{
|
|
mbmv[0]=(signed char)(*mv_comp_unpack)(&_dec->opb);
|
|
mbmv[1]=(signed char)(*mv_comp_unpack)(&_dec->opb);
|
|
}break;
|
|
default:memset(mbmv,0,sizeof(mbmv));break;
|
|
}
|
|
/*4MV mode fills in the fragments itself.
|
|
For all other modes we can use this common code.*/
|
|
if(mb_mode!=OC_MODE_INTER_MV_FOUR){
|
|
for(codedi=0;codedi<ncoded;codedi++){
|
|
mapi=coded[codedi];
|
|
fragi=mb_maps[mbi][mapi>>2][mapi&3];
|
|
frags[fragi].mb_mode=mb_mode;
|
|
memcpy(frag_mvs[fragi],mbmv,sizeof(mbmv));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void oc_dec_block_qis_unpack(oc_dec_ctx *_dec){
|
|
oc_fragment *frags;
|
|
const ptrdiff_t *coded_fragis;
|
|
ptrdiff_t ncoded_fragis;
|
|
ptrdiff_t fragii;
|
|
ptrdiff_t fragi;
|
|
ncoded_fragis=_dec->state.ntotal_coded_fragis;
|
|
if(ncoded_fragis<=0)return;
|
|
frags=_dec->state.frags;
|
|
coded_fragis=_dec->state.coded_fragis;
|
|
if(_dec->state.nqis==1){
|
|
/*If this frame has only a single qi value, then just use it for all coded
|
|
fragments.*/
|
|
for(fragii=0;fragii<ncoded_fragis;fragii++){
|
|
frags[coded_fragis[fragii]].qii=0;
|
|
}
|
|
}
|
|
else{
|
|
long val;
|
|
int flag;
|
|
int nqi1;
|
|
int run_count;
|
|
/*Otherwise, we decode a qi index for each fragment, using two passes of
|
|
the same binary RLE scheme used for super-block coded bits.
|
|
The first pass marks each fragment as having a qii of 0 or greater than
|
|
0, and the second pass (if necessary), distinguishes between a qii of
|
|
1 and 2.
|
|
At first we just store the qii in the fragment.
|
|
After all the qii's are decoded, we make a final pass to replace them
|
|
with the corresponding qi's for this frame.*/
|
|
val=oc_pack_read1(&_dec->opb);
|
|
flag=(int)val;
|
|
nqi1=0;
|
|
fragii=0;
|
|
while(fragii<ncoded_fragis){
|
|
int full_run;
|
|
run_count=oc_sb_run_unpack(&_dec->opb);
|
|
full_run=run_count>=4129;
|
|
do{
|
|
frags[coded_fragis[fragii++]].qii=flag;
|
|
nqi1+=flag;
|
|
}
|
|
while(--run_count>0&&fragii<ncoded_fragis);
|
|
if(full_run&&fragii<ncoded_fragis){
|
|
val=oc_pack_read1(&_dec->opb);
|
|
flag=(int)val;
|
|
}
|
|
else flag=!flag;
|
|
}
|
|
/*TODO: run_count should be 0 here.
|
|
If it's not, we should issue a warning of some kind.*/
|
|
/*If we have 3 different qi's for this frame, and there was at least one
|
|
fragment with a non-zero qi, make the second pass.*/
|
|
if(_dec->state.nqis==3&&nqi1>0){
|
|
/*Skip qii==0 fragments.*/
|
|
for(fragii=0;frags[coded_fragis[fragii]].qii==0;fragii++);
|
|
val=oc_pack_read1(&_dec->opb);
|
|
flag=(int)val;
|
|
do{
|
|
int full_run;
|
|
run_count=oc_sb_run_unpack(&_dec->opb);
|
|
full_run=run_count>=4129;
|
|
for(;fragii<ncoded_fragis;fragii++){
|
|
fragi=coded_fragis[fragii];
|
|
if(frags[fragi].qii==0)continue;
|
|
if(run_count--<=0)break;
|
|
frags[fragi].qii+=flag;
|
|
}
|
|
if(full_run&&fragii<ncoded_fragis){
|
|
val=oc_pack_read1(&_dec->opb);
|
|
flag=(int)val;
|
|
}
|
|
else flag=!flag;
|
|
}
|
|
while(fragii<ncoded_fragis);
|
|
/*TODO: run_count should be 0 here.
|
|
If it's not, we should issue a warning of some kind.*/
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/*Unpacks the DC coefficient tokens.
|
|
Unlike when unpacking the AC coefficient tokens, we actually need to decode
|
|
the DC coefficient values now so that we can do DC prediction.
|
|
_huff_idx: The index of the Huffman table to use for each color plane.
|
|
_ntoks_left: The number of tokens left to be decoded in each color plane for
|
|
each coefficient.
|
|
This is updated as EOB tokens and zero run tokens are decoded.
|
|
Return: The length of any outstanding EOB run.*/
|
|
static ptrdiff_t oc_dec_dc_coeff_unpack(oc_dec_ctx *_dec,int _huff_idxs[2],
|
|
ptrdiff_t _ntoks_left[3][64]){
|
|
unsigned char *dct_tokens;
|
|
oc_fragment *frags;
|
|
const ptrdiff_t *coded_fragis;
|
|
ptrdiff_t ncoded_fragis;
|
|
ptrdiff_t fragii;
|
|
ptrdiff_t eobs;
|
|
ptrdiff_t ti;
|
|
int pli;
|
|
dct_tokens=_dec->dct_tokens;
|
|
frags=_dec->state.frags;
|
|
coded_fragis=_dec->state.coded_fragis;
|
|
ncoded_fragis=fragii=eobs=ti=0;
|
|
for(pli=0;pli<3;pli++){
|
|
ptrdiff_t run_counts[64];
|
|
ptrdiff_t eob_count;
|
|
ptrdiff_t eobi;
|
|
int rli;
|
|
ncoded_fragis+=_dec->state.ncoded_fragis[pli];
|
|
memset(run_counts,0,sizeof(run_counts));
|
|
_dec->eob_runs[pli][0]=eobs;
|
|
_dec->ti0[pli][0]=ti;
|
|
/*Continue any previous EOB run, if there was one.*/
|
|
eobi=eobs;
|
|
if(ncoded_fragis-fragii<eobi)eobi=ncoded_fragis-fragii;
|
|
eob_count=eobi;
|
|
eobs-=eobi;
|
|
while(eobi-->0)frags[coded_fragis[fragii++]].dc=0;
|
|
while(fragii<ncoded_fragis){
|
|
int token;
|
|
int cw;
|
|
int eb;
|
|
int skip;
|
|
token=oc_huff_token_decode(&_dec->opb,
|
|
_dec->huff_tables[_huff_idxs[pli+1>>1]]);
|
|
dct_tokens[ti++]=(unsigned char)token;
|
|
if(OC_DCT_TOKEN_NEEDS_MORE(token)){
|
|
eb=(int)oc_pack_read(&_dec->opb,
|
|
OC_INTERNAL_DCT_TOKEN_EXTRA_BITS[token]);
|
|
dct_tokens[ti++]=(unsigned char)eb;
|
|
if(token==OC_DCT_TOKEN_FAT_EOB)dct_tokens[ti++]=(unsigned char)(eb>>8);
|
|
eb<<=OC_DCT_TOKEN_EB_POS(token);
|
|
}
|
|
else eb=0;
|
|
cw=OC_DCT_CODE_WORD[token]+eb;
|
|
eobs=cw>>OC_DCT_CW_EOB_SHIFT&0xFFF;
|
|
if(cw==OC_DCT_CW_FINISH)eobs=OC_DCT_EOB_FINISH;
|
|
if(eobs){
|
|
eobi=OC_MINI(eobs,ncoded_fragis-fragii);
|
|
eob_count+=eobi;
|
|
eobs-=eobi;
|
|
while(eobi-->0)frags[coded_fragis[fragii++]].dc=0;
|
|
}
|
|
else{
|
|
int coeff;
|
|
skip=(unsigned char)(cw>>OC_DCT_CW_RLEN_SHIFT);
|
|
cw^=-(cw&1<<OC_DCT_CW_FLIP_BIT);
|
|
coeff=cw>>OC_DCT_CW_MAG_SHIFT;
|
|
if(skip)coeff=0;
|
|
run_counts[skip]++;
|
|
frags[coded_fragis[fragii++]].dc=coeff;
|
|
}
|
|
}
|
|
/*Add the total EOB count to the longest run length.*/
|
|
run_counts[63]+=eob_count;
|
|
/*And convert the run_counts array to a moment table.*/
|
|
for(rli=63;rli-->0;)run_counts[rli]+=run_counts[rli+1];
|
|
/*Finally, subtract off the number of coefficients that have been
|
|
accounted for by runs started in this coefficient.*/
|
|
for(rli=64;rli-->0;)_ntoks_left[pli][rli]-=run_counts[rli];
|
|
}
|
|
_dec->dct_tokens_count=ti;
|
|
return eobs;
|
|
}
|
|
|
|
/*Unpacks the AC coefficient tokens.
|
|
This can completely discard coefficient values while unpacking, and so is
|
|
somewhat simpler than unpacking the DC coefficient tokens.
|
|
_huff_idx: The index of the Huffman table to use for each color plane.
|
|
_ntoks_left: The number of tokens left to be decoded in each color plane for
|
|
each coefficient.
|
|
This is updated as EOB tokens and zero run tokens are decoded.
|
|
_eobs: The length of any outstanding EOB run from previous
|
|
coefficients.
|
|
Return: The length of any outstanding EOB run.*/
|
|
static int oc_dec_ac_coeff_unpack(oc_dec_ctx *_dec,int _zzi,int _huff_idxs[2],
|
|
ptrdiff_t _ntoks_left[3][64],ptrdiff_t _eobs){
|
|
unsigned char *dct_tokens;
|
|
ptrdiff_t ti;
|
|
int pli;
|
|
dct_tokens=_dec->dct_tokens;
|
|
ti=_dec->dct_tokens_count;
|
|
for(pli=0;pli<3;pli++){
|
|
ptrdiff_t run_counts[64];
|
|
ptrdiff_t eob_count;
|
|
size_t ntoks_left;
|
|
size_t ntoks;
|
|
int rli;
|
|
_dec->eob_runs[pli][_zzi]=_eobs;
|
|
_dec->ti0[pli][_zzi]=ti;
|
|
ntoks_left=_ntoks_left[pli][_zzi];
|
|
memset(run_counts,0,sizeof(run_counts));
|
|
eob_count=0;
|
|
ntoks=0;
|
|
while(ntoks+_eobs<ntoks_left){
|
|
int token;
|
|
int cw;
|
|
int eb;
|
|
int skip;
|
|
ntoks+=_eobs;
|
|
eob_count+=_eobs;
|
|
token=oc_huff_token_decode(&_dec->opb,
|
|
_dec->huff_tables[_huff_idxs[pli+1>>1]]);
|
|
dct_tokens[ti++]=(unsigned char)token;
|
|
if(OC_DCT_TOKEN_NEEDS_MORE(token)){
|
|
eb=(int)oc_pack_read(&_dec->opb,
|
|
OC_INTERNAL_DCT_TOKEN_EXTRA_BITS[token]);
|
|
dct_tokens[ti++]=(unsigned char)eb;
|
|
if(token==OC_DCT_TOKEN_FAT_EOB)dct_tokens[ti++]=(unsigned char)(eb>>8);
|
|
eb<<=OC_DCT_TOKEN_EB_POS(token);
|
|
}
|
|
else eb=0;
|
|
cw=OC_DCT_CODE_WORD[token]+eb;
|
|
skip=(unsigned char)(cw>>OC_DCT_CW_RLEN_SHIFT);
|
|
_eobs=cw>>OC_DCT_CW_EOB_SHIFT&0xFFF;
|
|
if(cw==OC_DCT_CW_FINISH)_eobs=OC_DCT_EOB_FINISH;
|
|
if(_eobs==0){
|
|
run_counts[skip]++;
|
|
ntoks++;
|
|
}
|
|
}
|
|
/*Add the portion of the last EOB run actually used by this coefficient.*/
|
|
eob_count+=ntoks_left-ntoks;
|
|
/*And remove it from the remaining EOB count.*/
|
|
_eobs-=ntoks_left-ntoks;
|
|
/*Add the total EOB count to the longest run length.*/
|
|
run_counts[63]+=eob_count;
|
|
/*And convert the run_counts array to a moment table.*/
|
|
for(rli=63;rli-->0;)run_counts[rli]+=run_counts[rli+1];
|
|
/*Finally, subtract off the number of coefficients that have been
|
|
accounted for by runs started in this coefficient.*/
|
|
for(rli=64-_zzi;rli-->0;)_ntoks_left[pli][_zzi+rli]-=run_counts[rli];
|
|
}
|
|
_dec->dct_tokens_count=ti;
|
|
return _eobs;
|
|
}
|
|
|
|
/*Tokens describing the DCT coefficients that belong to each fragment are
|
|
stored in the bitstream grouped by coefficient, not by fragment.
|
|
|
|
This means that we either decode all the tokens in order, building up a
|
|
separate coefficient list for each fragment as we go, and then go back and
|
|
do the iDCT on each fragment, or we have to create separate lists of tokens
|
|
for each coefficient, so that we can pull the next token required off the
|
|
head of the appropriate list when decoding a specific fragment.
|
|
|
|
The former was VP3's choice, and it meant 2*w*h extra storage for all the
|
|
decoded coefficient values.
|
|
|
|
We take the second option, which lets us store just one to three bytes per
|
|
token (generally far fewer than the number of coefficients, due to EOB
|
|
tokens and zero runs), and which requires us to only maintain a counter for
|
|
each of the 64 coefficients, instead of a counter for every fragment to
|
|
determine where the next token goes.
|
|
|
|
We actually use 3 counters per coefficient, one for each color plane, so we
|
|
can decode all color planes simultaneously.
|
|
This lets color conversion, etc., be done as soon as a full MCU (one or
|
|
two super block rows) is decoded, while the image data is still in cache.*/
|
|
|
|
static void oc_dec_residual_tokens_unpack(oc_dec_ctx *_dec){
|
|
static const unsigned char OC_HUFF_LIST_MAX[5]={1,6,15,28,64};
|
|
ptrdiff_t ntoks_left[3][64];
|
|
int huff_idxs[2];
|
|
ptrdiff_t eobs;
|
|
long val;
|
|
int pli;
|
|
int zzi;
|
|
int hgi;
|
|
for(pli=0;pli<3;pli++)for(zzi=0;zzi<64;zzi++){
|
|
ntoks_left[pli][zzi]=_dec->state.ncoded_fragis[pli];
|
|
}
|
|
val=oc_pack_read(&_dec->opb,4);
|
|
huff_idxs[0]=(int)val;
|
|
val=oc_pack_read(&_dec->opb,4);
|
|
huff_idxs[1]=(int)val;
|
|
_dec->eob_runs[0][0]=0;
|
|
eobs=oc_dec_dc_coeff_unpack(_dec,huff_idxs,ntoks_left);
|
|
#if defined(HAVE_CAIRO)
|
|
_dec->telemetry_dc_bytes=oc_pack_bytes_left(&_dec->opb);
|
|
#endif
|
|
val=oc_pack_read(&_dec->opb,4);
|
|
huff_idxs[0]=(int)val;
|
|
val=oc_pack_read(&_dec->opb,4);
|
|
huff_idxs[1]=(int)val;
|
|
zzi=1;
|
|
for(hgi=1;hgi<5;hgi++){
|
|
huff_idxs[0]+=16;
|
|
huff_idxs[1]+=16;
|
|
for(;zzi<OC_HUFF_LIST_MAX[hgi];zzi++){
|
|
eobs=oc_dec_ac_coeff_unpack(_dec,zzi,huff_idxs,ntoks_left,eobs);
|
|
}
|
|
}
|
|
/*TODO: eobs should be exactly zero, or 4096 or greater.
|
|
The second case occurs when an EOB run of size zero is encountered, which
|
|
gets treated as an infinite EOB run (where infinity is PTRDIFF_MAX).
|
|
If neither of these conditions holds, then a warning should be issued.*/
|
|
}
|
|
|
|
|
|
static int oc_dec_postprocess_init(oc_dec_ctx *_dec){
|
|
/*pp_level 0: disabled; free any memory used and return*/
|
|
if(_dec->pp_level<=OC_PP_LEVEL_DISABLED){
|
|
if(_dec->dc_qis!=NULL){
|
|
_ogg_free(_dec->dc_qis);
|
|
_dec->dc_qis=NULL;
|
|
_ogg_free(_dec->variances);
|
|
_dec->variances=NULL;
|
|
_ogg_free(_dec->pp_frame_data);
|
|
_dec->pp_frame_data=NULL;
|
|
}
|
|
return 1;
|
|
}
|
|
if(_dec->dc_qis==NULL){
|
|
/*If we haven't been tracking DC quantization indices, there's no point in
|
|
starting now.*/
|
|
if(_dec->state.frame_type!=OC_INTRA_FRAME)return 1;
|
|
_dec->dc_qis=(unsigned char *)_ogg_malloc(
|
|
_dec->state.nfrags*sizeof(_dec->dc_qis[0]));
|
|
if(_dec->dc_qis==NULL)return 1;
|
|
memset(_dec->dc_qis,_dec->state.qis[0],_dec->state.nfrags);
|
|
}
|
|
else{
|
|
unsigned char *dc_qis;
|
|
const ptrdiff_t *coded_fragis;
|
|
ptrdiff_t ncoded_fragis;
|
|
ptrdiff_t fragii;
|
|
unsigned char qi0;
|
|
/*Update the DC quantization index of each coded block.*/
|
|
dc_qis=_dec->dc_qis;
|
|
coded_fragis=_dec->state.coded_fragis;
|
|
ncoded_fragis=_dec->state.ncoded_fragis[0]+
|
|
_dec->state.ncoded_fragis[1]+_dec->state.ncoded_fragis[2];
|
|
qi0=(unsigned char)_dec->state.qis[0];
|
|
for(fragii=0;fragii<ncoded_fragis;fragii++){
|
|
dc_qis[coded_fragis[fragii]]=qi0;
|
|
}
|
|
}
|
|
/*pp_level 1: Stop after updating DC quantization indices.*/
|
|
if(_dec->pp_level<=OC_PP_LEVEL_TRACKDCQI){
|
|
if(_dec->variances!=NULL){
|
|
_ogg_free(_dec->variances);
|
|
_dec->variances=NULL;
|
|
_ogg_free(_dec->pp_frame_data);
|
|
_dec->pp_frame_data=NULL;
|
|
}
|
|
return 1;
|
|
}
|
|
if(_dec->variances==NULL){
|
|
size_t frame_sz;
|
|
size_t c_sz;
|
|
int c_w;
|
|
int c_h;
|
|
frame_sz=_dec->state.info.frame_width*(size_t)_dec->state.info.frame_height;
|
|
c_w=_dec->state.info.frame_width>>!(_dec->state.info.pixel_fmt&1);
|
|
c_h=_dec->state.info.frame_height>>!(_dec->state.info.pixel_fmt&2);
|
|
c_sz=c_w*(size_t)c_h;
|
|
/*Allocate space for the chroma planes, even if we're not going to use
|
|
them; this simplifies allocation state management, though it may waste
|
|
memory on the few systems that don't overcommit pages.*/
|
|
frame_sz+=c_sz<<1;
|
|
_dec->pp_frame_data=(unsigned char *)_ogg_malloc(
|
|
frame_sz*sizeof(_dec->pp_frame_data[0]));
|
|
_dec->variances=(int *)_ogg_malloc(
|
|
_dec->state.nfrags*sizeof(_dec->variances[0]));
|
|
if(_dec->variances==NULL||_dec->pp_frame_data==NULL){
|
|
_ogg_free(_dec->pp_frame_data);
|
|
_dec->pp_frame_data=NULL;
|
|
_ogg_free(_dec->variances);
|
|
_dec->variances=NULL;
|
|
return 1;
|
|
}
|
|
/*Force an update of the PP buffer pointers.*/
|
|
_dec->pp_frame_state=0;
|
|
}
|
|
/*Update the PP buffer pointers if necessary.*/
|
|
if(_dec->pp_frame_state!=1+(_dec->pp_level>=OC_PP_LEVEL_DEBLOCKC)){
|
|
if(_dec->pp_level<OC_PP_LEVEL_DEBLOCKC){
|
|
/*If chroma processing is disabled, just use the PP luma plane.*/
|
|
_dec->pp_frame_buf[0].width=_dec->state.info.frame_width;
|
|
_dec->pp_frame_buf[0].height=_dec->state.info.frame_height;
|
|
_dec->pp_frame_buf[0].stride=-_dec->pp_frame_buf[0].width;
|
|
_dec->pp_frame_buf[0].data=_dec->pp_frame_data+
|
|
(1-_dec->pp_frame_buf[0].height)*(ptrdiff_t)_dec->pp_frame_buf[0].stride;
|
|
}
|
|
else{
|
|
size_t y_sz;
|
|
size_t c_sz;
|
|
int c_w;
|
|
int c_h;
|
|
/*Otherwise, set up pointers to all three PP planes.*/
|
|
y_sz=_dec->state.info.frame_width*(size_t)_dec->state.info.frame_height;
|
|
c_w=_dec->state.info.frame_width>>!(_dec->state.info.pixel_fmt&1);
|
|
c_h=_dec->state.info.frame_height>>!(_dec->state.info.pixel_fmt&2);
|
|
c_sz=c_w*(size_t)c_h;
|
|
_dec->pp_frame_buf[0].width=_dec->state.info.frame_width;
|
|
_dec->pp_frame_buf[0].height=_dec->state.info.frame_height;
|
|
_dec->pp_frame_buf[0].stride=_dec->pp_frame_buf[0].width;
|
|
_dec->pp_frame_buf[0].data=_dec->pp_frame_data;
|
|
_dec->pp_frame_buf[1].width=c_w;
|
|
_dec->pp_frame_buf[1].height=c_h;
|
|
_dec->pp_frame_buf[1].stride=_dec->pp_frame_buf[1].width;
|
|
_dec->pp_frame_buf[1].data=_dec->pp_frame_buf[0].data+y_sz;
|
|
_dec->pp_frame_buf[2].width=c_w;
|
|
_dec->pp_frame_buf[2].height=c_h;
|
|
_dec->pp_frame_buf[2].stride=_dec->pp_frame_buf[2].width;
|
|
_dec->pp_frame_buf[2].data=_dec->pp_frame_buf[1].data+c_sz;
|
|
oc_ycbcr_buffer_flip(_dec->pp_frame_buf,_dec->pp_frame_buf);
|
|
}
|
|
_dec->pp_frame_state=1+(_dec->pp_level>=OC_PP_LEVEL_DEBLOCKC);
|
|
}
|
|
/*If we're not processing chroma, copy the reference frame's chroma planes.*/
|
|
if(_dec->pp_level<OC_PP_LEVEL_DEBLOCKC){
|
|
memcpy(_dec->pp_frame_buf+1,
|
|
_dec->state.ref_frame_bufs[_dec->state.ref_frame_idx[OC_FRAME_SELF]]+1,
|
|
sizeof(_dec->pp_frame_buf[1])*2);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
typedef struct{
|
|
int bounding_values[256];
|
|
ptrdiff_t ti[3][64];
|
|
ptrdiff_t eob_runs[3][64];
|
|
const ptrdiff_t *coded_fragis[3];
|
|
const ptrdiff_t *uncoded_fragis[3];
|
|
ptrdiff_t ncoded_fragis[3];
|
|
ptrdiff_t nuncoded_fragis[3];
|
|
const ogg_uint16_t *dequant[3][3][2];
|
|
int fragy0[3];
|
|
int fragy_end[3];
|
|
int pred_last[3][3];
|
|
int mcu_nvfrags;
|
|
int loop_filter;
|
|
int pp_level;
|
|
}oc_dec_pipeline_state;
|
|
|
|
|
|
|
|
/*Initialize the main decoding pipeline.*/
|
|
static void oc_dec_pipeline_init(oc_dec_ctx *_dec,
|
|
oc_dec_pipeline_state *_pipe){
|
|
const ptrdiff_t *coded_fragis;
|
|
const ptrdiff_t *uncoded_fragis;
|
|
int pli;
|
|
int qii;
|
|
int qti;
|
|
/*If chroma is sub-sampled in the vertical direction, we have to decode two
|
|
super block rows of Y' for each super block row of Cb and Cr.*/
|
|
_pipe->mcu_nvfrags=4<<!(_dec->state.info.pixel_fmt&2);
|
|
/*Initialize the token and extra bits indices for each plane and
|
|
coefficient.*/
|
|
memcpy(_pipe->ti,_dec->ti0,sizeof(_pipe->ti));
|
|
/*Also copy over the initial the EOB run counts.*/
|
|
memcpy(_pipe->eob_runs,_dec->eob_runs,sizeof(_pipe->eob_runs));
|
|
/*Set up per-plane pointers to the coded and uncoded fragments lists.*/
|
|
coded_fragis=_dec->state.coded_fragis;
|
|
uncoded_fragis=coded_fragis+_dec->state.nfrags;
|
|
for(pli=0;pli<3;pli++){
|
|
ptrdiff_t ncoded_fragis;
|
|
_pipe->coded_fragis[pli]=coded_fragis;
|
|
_pipe->uncoded_fragis[pli]=uncoded_fragis;
|
|
ncoded_fragis=_dec->state.ncoded_fragis[pli];
|
|
coded_fragis+=ncoded_fragis;
|
|
uncoded_fragis+=ncoded_fragis-_dec->state.fplanes[pli].nfrags;
|
|
}
|
|
/*Set up condensed quantizer tables.*/
|
|
for(pli=0;pli<3;pli++){
|
|
for(qii=0;qii<_dec->state.nqis;qii++){
|
|
for(qti=0;qti<2;qti++){
|
|
_pipe->dequant[pli][qii][qti]=
|
|
_dec->state.dequant_tables[_dec->state.qis[qii]][pli][qti];
|
|
}
|
|
}
|
|
}
|
|
/*Set the previous DC predictor to 0 for all color planes and frame types.*/
|
|
memset(_pipe->pred_last,0,sizeof(_pipe->pred_last));
|
|
/*Initialize the bounding value array for the loop filter.*/
|
|
_pipe->loop_filter=!oc_state_loop_filter_init(&_dec->state,
|
|
_pipe->bounding_values);
|
|
/*Initialize any buffers needed for post-processing.
|
|
We also save the current post-processing level, to guard against the user
|
|
changing it from a callback.*/
|
|
if(!oc_dec_postprocess_init(_dec))_pipe->pp_level=_dec->pp_level;
|
|
/*If we don't have enough information to post-process, disable it, regardless
|
|
of the user-requested level.*/
|
|
else{
|
|
_pipe->pp_level=OC_PP_LEVEL_DISABLED;
|
|
memcpy(_dec->pp_frame_buf,
|
|
_dec->state.ref_frame_bufs[_dec->state.ref_frame_idx[OC_FRAME_SELF]],
|
|
sizeof(_dec->pp_frame_buf[0])*3);
|
|
}
|
|
}
|
|
|
|
/*Undo the DC prediction in a single plane of an MCU (one or two super block
|
|
rows).
|
|
As a side effect, the number of coded and uncoded fragments in this plane of
|
|
the MCU is also computed.*/
|
|
static void oc_dec_dc_unpredict_mcu_plane(oc_dec_ctx *_dec,
|
|
oc_dec_pipeline_state *_pipe,int _pli){
|
|
const oc_fragment_plane *fplane;
|
|
oc_fragment *frags;
|
|
int *pred_last;
|
|
ptrdiff_t ncoded_fragis;
|
|
ptrdiff_t fragi;
|
|
int fragx;
|
|
int fragy;
|
|
int fragy0;
|
|
int fragy_end;
|
|
int nhfrags;
|
|
/*Compute the first and last fragment row of the current MCU for this
|
|
plane.*/
|
|
fplane=_dec->state.fplanes+_pli;
|
|
fragy0=_pipe->fragy0[_pli];
|
|
fragy_end=_pipe->fragy_end[_pli];
|
|
nhfrags=fplane->nhfrags;
|
|
pred_last=_pipe->pred_last[_pli];
|
|
frags=_dec->state.frags;
|
|
ncoded_fragis=0;
|
|
fragi=fplane->froffset+fragy0*(ptrdiff_t)nhfrags;
|
|
for(fragy=fragy0;fragy<fragy_end;fragy++){
|
|
if(fragy==0){
|
|
/*For the first row, all of the cases reduce to just using the previous
|
|
predictor for the same reference frame.*/
|
|
for(fragx=0;fragx<nhfrags;fragx++,fragi++){
|
|
if(frags[fragi].coded){
|
|
int ref;
|
|
ref=OC_FRAME_FOR_MODE(frags[fragi].mb_mode);
|
|
pred_last[ref]=frags[fragi].dc+=pred_last[ref];
|
|
ncoded_fragis++;
|
|
}
|
|
}
|
|
}
|
|
else{
|
|
oc_fragment *u_frags;
|
|
int l_ref;
|
|
int ul_ref;
|
|
int u_ref;
|
|
u_frags=frags-nhfrags;
|
|
l_ref=-1;
|
|
ul_ref=-1;
|
|
u_ref=u_frags[fragi].coded?OC_FRAME_FOR_MODE(u_frags[fragi].mb_mode):-1;
|
|
for(fragx=0;fragx<nhfrags;fragx++,fragi++){
|
|
int ur_ref;
|
|
if(fragx+1>=nhfrags)ur_ref=-1;
|
|
else{
|
|
ur_ref=u_frags[fragi+1].coded?
|
|
OC_FRAME_FOR_MODE(u_frags[fragi+1].mb_mode):-1;
|
|
}
|
|
if(frags[fragi].coded){
|
|
int pred;
|
|
int ref;
|
|
ref=OC_FRAME_FOR_MODE(frags[fragi].mb_mode);
|
|
/*We break out a separate case based on which of our neighbors use
|
|
the same reference frames.
|
|
This is somewhat faster than trying to make a generic case which
|
|
handles all of them, since it reduces lots of poorly predicted
|
|
jumps to one switch statement, and also lets a number of the
|
|
multiplications be optimized out by strength reduction.*/
|
|
switch((l_ref==ref)|(ul_ref==ref)<<1|
|
|
(u_ref==ref)<<2|(ur_ref==ref)<<3){
|
|
default:pred=pred_last[ref];break;
|
|
case 1:
|
|
case 3:pred=frags[fragi-1].dc;break;
|
|
case 2:pred=u_frags[fragi-1].dc;break;
|
|
case 4:
|
|
case 6:
|
|
case 12:pred=u_frags[fragi].dc;break;
|
|
case 5:pred=(frags[fragi-1].dc+u_frags[fragi].dc)/2;break;
|
|
case 8:pred=u_frags[fragi+1].dc;break;
|
|
case 9:
|
|
case 11:
|
|
case 13:{
|
|
pred=(75*frags[fragi-1].dc+53*u_frags[fragi+1].dc)/128;
|
|
}break;
|
|
case 10:pred=(u_frags[fragi-1].dc+u_frags[fragi+1].dc)/2;break;
|
|
case 14:{
|
|
pred=(3*(u_frags[fragi-1].dc+u_frags[fragi+1].dc)
|
|
+10*u_frags[fragi].dc)/16;
|
|
}break;
|
|
case 7:
|
|
case 15:{
|
|
int p0;
|
|
int p1;
|
|
int p2;
|
|
p0=frags[fragi-1].dc;
|
|
p1=u_frags[fragi-1].dc;
|
|
p2=u_frags[fragi].dc;
|
|
pred=(29*(p0+p2)-26*p1)/32;
|
|
if(abs(pred-p2)>128)pred=p2;
|
|
else if(abs(pred-p0)>128)pred=p0;
|
|
else if(abs(pred-p1)>128)pred=p1;
|
|
}break;
|
|
}
|
|
pred_last[ref]=frags[fragi].dc+=pred;
|
|
ncoded_fragis++;
|
|
l_ref=ref;
|
|
}
|
|
else l_ref=-1;
|
|
ul_ref=u_ref;
|
|
u_ref=ur_ref;
|
|
}
|
|
}
|
|
}
|
|
_pipe->ncoded_fragis[_pli]=ncoded_fragis;
|
|
/*Also save the number of uncoded fragments so we know how many to copy.*/
|
|
_pipe->nuncoded_fragis[_pli]=
|
|
(fragy_end-fragy0)*(ptrdiff_t)nhfrags-ncoded_fragis;
|
|
}
|
|
|
|
/*Reconstructs all coded fragments in a single MCU (one or two super block
|
|
rows).
|
|
This requires that each coded fragment have a proper macro block mode and
|
|
motion vector (if not in INTRA mode), and have it's DC value decoded, with
|
|
the DC prediction process reversed, and the number of coded and uncoded
|
|
fragments in this plane of the MCU be counted.
|
|
The token lists for each color plane and coefficient should also be filled
|
|
in, along with initial token offsets, extra bits offsets, and EOB run
|
|
counts.*/
|
|
static void oc_dec_frags_recon_mcu_plane(oc_dec_ctx *_dec,
|
|
oc_dec_pipeline_state *_pipe,int _pli){
|
|
unsigned char *dct_tokens;
|
|
const unsigned char *dct_fzig_zag;
|
|
ogg_uint16_t dc_quant[2];
|
|
const oc_fragment *frags;
|
|
const ptrdiff_t *coded_fragis;
|
|
ptrdiff_t ncoded_fragis;
|
|
ptrdiff_t fragii;
|
|
ptrdiff_t *ti;
|
|
ptrdiff_t *eob_runs;
|
|
int qti;
|
|
dct_tokens=_dec->dct_tokens;
|
|
dct_fzig_zag=_dec->state.opt_data.dct_fzig_zag;
|
|
frags=_dec->state.frags;
|
|
coded_fragis=_pipe->coded_fragis[_pli];
|
|
ncoded_fragis=_pipe->ncoded_fragis[_pli];
|
|
ti=_pipe->ti[_pli];
|
|
eob_runs=_pipe->eob_runs[_pli];
|
|
for(qti=0;qti<2;qti++)dc_quant[qti]=_pipe->dequant[_pli][0][qti][0];
|
|
for(fragii=0;fragii<ncoded_fragis;fragii++){
|
|
/*This array is made one element larger because the zig-zag index array
|
|
uses the final element as a dumping ground for out-of-range indices
|
|
to protect us from buffer overflow.*/
|
|
OC_ALIGN8(ogg_int16_t dct_coeffs[65]);
|
|
const ogg_uint16_t *ac_quant;
|
|
ptrdiff_t fragi;
|
|
int last_zzi;
|
|
int zzi;
|
|
fragi=coded_fragis[fragii];
|
|
for(zzi=0;zzi<64;zzi++)dct_coeffs[zzi]=0;
|
|
qti=frags[fragi].mb_mode!=OC_MODE_INTRA;
|
|
ac_quant=_pipe->dequant[_pli][frags[fragi].qii][qti];
|
|
/*Decode the AC coefficients.*/
|
|
for(zzi=0;zzi<64;){
|
|
int token;
|
|
last_zzi=zzi;
|
|
if(eob_runs[zzi]){
|
|
eob_runs[zzi]--;
|
|
break;
|
|
}
|
|
else{
|
|
ptrdiff_t eob;
|
|
int cw;
|
|
int rlen;
|
|
int coeff;
|
|
int lti;
|
|
lti=ti[zzi];
|
|
token=dct_tokens[lti++];
|
|
cw=OC_DCT_CODE_WORD[token];
|
|
/*These parts could be done branchless, but the branches are fairly
|
|
predictable and the C code translates into more than a few
|
|
instructions, so it's worth it to avoid them.*/
|
|
if(OC_DCT_TOKEN_NEEDS_MORE(token)){
|
|
cw+=dct_tokens[lti++]<<OC_DCT_TOKEN_EB_POS(token);
|
|
}
|
|
eob=cw>>OC_DCT_CW_EOB_SHIFT&0xFFF;
|
|
if(token==OC_DCT_TOKEN_FAT_EOB){
|
|
eob+=dct_tokens[lti++]<<8;
|
|
if(eob==0)eob=OC_DCT_EOB_FINISH;
|
|
}
|
|
rlen=(unsigned char)(cw>>OC_DCT_CW_RLEN_SHIFT);
|
|
cw^=-(cw&1<<OC_DCT_CW_FLIP_BIT);
|
|
coeff=cw>>OC_DCT_CW_MAG_SHIFT;
|
|
eob_runs[zzi]=eob;
|
|
ti[zzi]=lti;
|
|
zzi+=rlen;
|
|
dct_coeffs[dct_fzig_zag[zzi]]=(ogg_int16_t)(coeff*(int)ac_quant[zzi]);
|
|
zzi+=!eob;
|
|
}
|
|
}
|
|
/*TODO: zzi should be exactly 64 here.
|
|
If it's not, we should report some kind of warning.*/
|
|
zzi=OC_MINI(zzi,64);
|
|
dct_coeffs[0]=(ogg_int16_t)frags[fragi].dc;
|
|
/*last_zzi is always initialized.
|
|
If your compiler thinks otherwise, it is dumb.*/
|
|
oc_state_frag_recon(&_dec->state,fragi,_pli,
|
|
dct_coeffs,last_zzi,dc_quant[qti]);
|
|
}
|
|
_pipe->coded_fragis[_pli]+=ncoded_fragis;
|
|
/*Right now the reconstructed MCU has only the coded blocks in it.*/
|
|
/*TODO: We make the decision here to always copy the uncoded blocks into it
|
|
from the reference frame.
|
|
We could also copy the coded blocks back over the reference frame, if we
|
|
wait for an additional MCU to be decoded, which might be faster if only a
|
|
small number of blocks are coded.
|
|
However, this introduces more latency, creating a larger cache footprint.
|
|
It's unknown which decision is better, but this one results in simpler
|
|
code, and the hard case (high bitrate, high resolution) is handled
|
|
correctly.*/
|
|
/*Copy the uncoded blocks from the previous reference frame.*/
|
|
_pipe->uncoded_fragis[_pli]-=_pipe->nuncoded_fragis[_pli];
|
|
oc_state_frag_copy_list(&_dec->state,_pipe->uncoded_fragis[_pli],
|
|
_pipe->nuncoded_fragis[_pli],OC_FRAME_SELF,OC_FRAME_PREV,_pli);
|
|
}
|
|
|
|
/*Filter a horizontal block edge.*/
|
|
static void oc_filter_hedge(unsigned char *_dst,int _dst_ystride,
|
|
const unsigned char *_src,int _src_ystride,int _qstep,int _flimit,
|
|
int *_variance0,int *_variance1){
|
|
unsigned char *rdst;
|
|
const unsigned char *rsrc;
|
|
unsigned char *cdst;
|
|
const unsigned char *csrc;
|
|
int r[10];
|
|
int sum0;
|
|
int sum1;
|
|
int bx;
|
|
int by;
|
|
rdst=_dst;
|
|
rsrc=_src;
|
|
for(bx=0;bx<8;bx++){
|
|
cdst=rdst;
|
|
csrc=rsrc;
|
|
for(by=0;by<10;by++){
|
|
r[by]=*csrc;
|
|
csrc+=_src_ystride;
|
|
}
|
|
sum0=sum1=0;
|
|
for(by=0;by<4;by++){
|
|
sum0+=abs(r[by+1]-r[by]);
|
|
sum1+=abs(r[by+5]-r[by+6]);
|
|
}
|
|
*_variance0+=OC_MINI(255,sum0);
|
|
*_variance1+=OC_MINI(255,sum1);
|
|
if(sum0<_flimit&&sum1<_flimit&&r[5]-r[4]<_qstep&&r[4]-r[5]<_qstep){
|
|
*cdst=(unsigned char)(r[0]*3+r[1]*2+r[2]+r[3]+r[4]+4>>3);
|
|
cdst+=_dst_ystride;
|
|
*cdst=(unsigned char)(r[0]*2+r[1]+r[2]*2+r[3]+r[4]+r[5]+4>>3);
|
|
cdst+=_dst_ystride;
|
|
for(by=0;by<4;by++){
|
|
*cdst=(unsigned char)(r[by]+r[by+1]+r[by+2]+r[by+3]*2+
|
|
r[by+4]+r[by+5]+r[by+6]+4>>3);
|
|
cdst+=_dst_ystride;
|
|
}
|
|
*cdst=(unsigned char)(r[4]+r[5]+r[6]+r[7]*2+r[8]+r[9]*2+4>>3);
|
|
cdst+=_dst_ystride;
|
|
*cdst=(unsigned char)(r[5]+r[6]+r[7]+r[8]*2+r[9]*3+4>>3);
|
|
}
|
|
else{
|
|
for(by=1;by<=8;by++){
|
|
*cdst=(unsigned char)r[by];
|
|
cdst+=_dst_ystride;
|
|
}
|
|
}
|
|
rdst++;
|
|
rsrc++;
|
|
}
|
|
}
|
|
|
|
/*Filter a vertical block edge.*/
|
|
static void oc_filter_vedge(unsigned char *_dst,int _dst_ystride,
|
|
int _qstep,int _flimit,int *_variances){
|
|
unsigned char *rdst;
|
|
const unsigned char *rsrc;
|
|
unsigned char *cdst;
|
|
int r[10];
|
|
int sum0;
|
|
int sum1;
|
|
int bx;
|
|
int by;
|
|
cdst=_dst;
|
|
for(by=0;by<8;by++){
|
|
rsrc=cdst-1;
|
|
rdst=cdst;
|
|
for(bx=0;bx<10;bx++)r[bx]=*rsrc++;
|
|
sum0=sum1=0;
|
|
for(bx=0;bx<4;bx++){
|
|
sum0+=abs(r[bx+1]-r[bx]);
|
|
sum1+=abs(r[bx+5]-r[bx+6]);
|
|
}
|
|
_variances[0]+=OC_MINI(255,sum0);
|
|
_variances[1]+=OC_MINI(255,sum1);
|
|
if(sum0<_flimit&&sum1<_flimit&&r[5]-r[4]<_qstep&&r[4]-r[5]<_qstep){
|
|
*rdst++=(unsigned char)(r[0]*3+r[1]*2+r[2]+r[3]+r[4]+4>>3);
|
|
*rdst++=(unsigned char)(r[0]*2+r[1]+r[2]*2+r[3]+r[4]+r[5]+4>>3);
|
|
for(bx=0;bx<4;bx++){
|
|
*rdst++=(unsigned char)(r[bx]+r[bx+1]+r[bx+2]+r[bx+3]*2+
|
|
r[bx+4]+r[bx+5]+r[bx+6]+4>>3);
|
|
}
|
|
*rdst++=(unsigned char)(r[4]+r[5]+r[6]+r[7]*2+r[8]+r[9]*2+4>>3);
|
|
*rdst=(unsigned char)(r[5]+r[6]+r[7]+r[8]*2+r[9]*3+4>>3);
|
|
}
|
|
cdst+=_dst_ystride;
|
|
}
|
|
}
|
|
|
|
static void oc_dec_deblock_frag_rows(oc_dec_ctx *_dec,
|
|
th_img_plane *_dst,th_img_plane *_src,int _pli,int _fragy0,
|
|
int _fragy_end){
|
|
oc_fragment_plane *fplane;
|
|
int *variance;
|
|
unsigned char *dc_qi;
|
|
unsigned char *dst;
|
|
const unsigned char *src;
|
|
ptrdiff_t froffset;
|
|
int dst_ystride;
|
|
int src_ystride;
|
|
int nhfrags;
|
|
int width;
|
|
int notstart;
|
|
int notdone;
|
|
int flimit;
|
|
int qstep;
|
|
int y_end;
|
|
int y;
|
|
int x;
|
|
_dst+=_pli;
|
|
_src+=_pli;
|
|
fplane=_dec->state.fplanes+_pli;
|
|
nhfrags=fplane->nhfrags;
|
|
froffset=fplane->froffset+_fragy0*(ptrdiff_t)nhfrags;
|
|
variance=_dec->variances+froffset;
|
|
dc_qi=_dec->dc_qis+froffset;
|
|
notstart=_fragy0>0;
|
|
notdone=_fragy_end<fplane->nvfrags;
|
|
/*We want to clear an extra row of variances, except at the end.*/
|
|
memset(variance+(nhfrags&-notstart),0,
|
|
(_fragy_end+notdone-_fragy0-notstart)*(nhfrags*sizeof(variance[0])));
|
|
/*Except for the first time, we want to point to the middle of the row.*/
|
|
y=(_fragy0<<3)+(notstart<<2);
|
|
dst_ystride=_dst->stride;
|
|
src_ystride=_src->stride;
|
|
dst=_dst->data+y*(ptrdiff_t)dst_ystride;
|
|
src=_src->data+y*(ptrdiff_t)src_ystride;
|
|
width=_dst->width;
|
|
for(;y<4;y++){
|
|
memcpy(dst,src,width*sizeof(dst[0]));
|
|
dst+=dst_ystride;
|
|
src+=src_ystride;
|
|
}
|
|
/*We also want to skip the last row in the frame for this loop.*/
|
|
y_end=_fragy_end-!notdone<<3;
|
|
for(;y<y_end;y+=8){
|
|
qstep=_dec->pp_dc_scale[*dc_qi];
|
|
flimit=(qstep*3)>>2;
|
|
oc_filter_hedge(dst,dst_ystride,src-src_ystride,src_ystride,
|
|
qstep,flimit,variance,variance+nhfrags);
|
|
variance++;
|
|
dc_qi++;
|
|
for(x=8;x<width;x+=8){
|
|
qstep=_dec->pp_dc_scale[*dc_qi];
|
|
flimit=(qstep*3)>>2;
|
|
oc_filter_hedge(dst+x,dst_ystride,src+x-src_ystride,src_ystride,
|
|
qstep,flimit,variance,variance+nhfrags);
|
|
oc_filter_vedge(dst+x-(dst_ystride<<2)-4,dst_ystride,
|
|
qstep,flimit,variance-1);
|
|
variance++;
|
|
dc_qi++;
|
|
}
|
|
dst+=dst_ystride<<3;
|
|
src+=src_ystride<<3;
|
|
}
|
|
/*And finally, handle the last row in the frame, if it's in the range.*/
|
|
if(!notdone){
|
|
int height;
|
|
height=_dst->height;
|
|
for(;y<height;y++){
|
|
memcpy(dst,src,width*sizeof(dst[0]));
|
|
dst+=dst_ystride;
|
|
src+=src_ystride;
|
|
}
|
|
/*Filter the last row of vertical block edges.*/
|
|
dc_qi++;
|
|
for(x=8;x<width;x+=8){
|
|
qstep=_dec->pp_dc_scale[*dc_qi++];
|
|
flimit=(qstep*3)>>2;
|
|
oc_filter_vedge(dst+x-(dst_ystride<<3)-4,dst_ystride,
|
|
qstep,flimit,variance++);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void oc_dering_block(unsigned char *_idata,int _ystride,int _b,
|
|
int _dc_scale,int _sharp_mod,int _strong){
|
|
static const unsigned char OC_MOD_MAX[2]={24,32};
|
|
static const unsigned char OC_MOD_SHIFT[2]={1,0};
|
|
const unsigned char *psrc;
|
|
const unsigned char *src;
|
|
const unsigned char *nsrc;
|
|
unsigned char *dst;
|
|
int vmod[72];
|
|
int hmod[72];
|
|
int mod_hi;
|
|
int by;
|
|
int bx;
|
|
mod_hi=OC_MINI(3*_dc_scale,OC_MOD_MAX[_strong]);
|
|
dst=_idata;
|
|
src=dst;
|
|
psrc=src-(_ystride&-!(_b&4));
|
|
for(by=0;by<9;by++){
|
|
for(bx=0;bx<8;bx++){
|
|
int mod;
|
|
mod=32+_dc_scale-(abs(src[bx]-psrc[bx])<<OC_MOD_SHIFT[_strong]);
|
|
vmod[(by<<3)+bx]=mod<-64?_sharp_mod:OC_CLAMPI(0,mod,mod_hi);
|
|
}
|
|
psrc=src;
|
|
src+=_ystride&-(!(_b&8)|by<7);
|
|
}
|
|
nsrc=dst;
|
|
psrc=dst-!(_b&1);
|
|
for(bx=0;bx<9;bx++){
|
|
src=nsrc;
|
|
for(by=0;by<8;by++){
|
|
int mod;
|
|
mod=32+_dc_scale-(abs(*src-*psrc)<<OC_MOD_SHIFT[_strong]);
|
|
hmod[(bx<<3)+by]=mod<-64?_sharp_mod:OC_CLAMPI(0,mod,mod_hi);
|
|
psrc+=_ystride;
|
|
src+=_ystride;
|
|
}
|
|
psrc=nsrc;
|
|
nsrc+=!(_b&2)|bx<7;
|
|
}
|
|
src=dst;
|
|
psrc=src-(_ystride&-!(_b&4));
|
|
nsrc=src+_ystride;
|
|
for(by=0;by<8;by++){
|
|
int a;
|
|
int b;
|
|
int w;
|
|
a=128;
|
|
b=64;
|
|
w=hmod[by];
|
|
a-=w;
|
|
b+=w**(src-!(_b&1));
|
|
w=vmod[by<<3];
|
|
a-=w;
|
|
b+=w*psrc[0];
|
|
w=vmod[by+1<<3];
|
|
a-=w;
|
|
b+=w*nsrc[0];
|
|
w=hmod[(1<<3)+by];
|
|
a-=w;
|
|
b+=w*src[1];
|
|
dst[0]=OC_CLAMP255(a*src[0]+b>>7);
|
|
for(bx=1;bx<7;bx++){
|
|
a=128;
|
|
b=64;
|
|
w=hmod[(bx<<3)+by];
|
|
a-=w;
|
|
b+=w*src[bx-1];
|
|
w=vmod[(by<<3)+bx];
|
|
a-=w;
|
|
b+=w*psrc[bx];
|
|
w=vmod[(by+1<<3)+bx];
|
|
a-=w;
|
|
b+=w*nsrc[bx];
|
|
w=hmod[(bx+1<<3)+by];
|
|
a-=w;
|
|
b+=w*src[bx+1];
|
|
dst[bx]=OC_CLAMP255(a*src[bx]+b>>7);
|
|
}
|
|
a=128;
|
|
b=64;
|
|
w=hmod[(7<<3)+by];
|
|
a-=w;
|
|
b+=w*src[6];
|
|
w=vmod[(by<<3)+7];
|
|
a-=w;
|
|
b+=w*psrc[7];
|
|
w=vmod[(by+1<<3)+7];
|
|
a-=w;
|
|
b+=w*nsrc[7];
|
|
w=hmod[(8<<3)+by];
|
|
a-=w;
|
|
b+=w*src[7+!(_b&2)];
|
|
dst[7]=OC_CLAMP255(a*src[7]+b>>7);
|
|
dst+=_ystride;
|
|
psrc=src;
|
|
src=nsrc;
|
|
nsrc+=_ystride&-(!(_b&8)|by<6);
|
|
}
|
|
}
|
|
|
|
#define OC_DERING_THRESH1 (384)
|
|
#define OC_DERING_THRESH2 (4*OC_DERING_THRESH1)
|
|
#define OC_DERING_THRESH3 (5*OC_DERING_THRESH1)
|
|
#define OC_DERING_THRESH4 (10*OC_DERING_THRESH1)
|
|
|
|
static void oc_dec_dering_frag_rows(oc_dec_ctx *_dec,th_img_plane *_img,
|
|
int _pli,int _fragy0,int _fragy_end){
|
|
th_img_plane *iplane;
|
|
oc_fragment_plane *fplane;
|
|
oc_fragment *frag;
|
|
int *variance;
|
|
unsigned char *idata;
|
|
ptrdiff_t froffset;
|
|
int ystride;
|
|
int nhfrags;
|
|
int sthresh;
|
|
int strong;
|
|
int y_end;
|
|
int width;
|
|
int height;
|
|
int y;
|
|
int x;
|
|
iplane=_img+_pli;
|
|
fplane=_dec->state.fplanes+_pli;
|
|
nhfrags=fplane->nhfrags;
|
|
froffset=fplane->froffset+_fragy0*(ptrdiff_t)nhfrags;
|
|
variance=_dec->variances+froffset;
|
|
frag=_dec->state.frags+froffset;
|
|
strong=_dec->pp_level>=(_pli?OC_PP_LEVEL_SDERINGC:OC_PP_LEVEL_SDERINGY);
|
|
sthresh=_pli?OC_DERING_THRESH4:OC_DERING_THRESH3;
|
|
y=_fragy0<<3;
|
|
ystride=iplane->stride;
|
|
idata=iplane->data+y*(ptrdiff_t)ystride;
|
|
y_end=_fragy_end<<3;
|
|
width=iplane->width;
|
|
height=iplane->height;
|
|
for(;y<y_end;y+=8){
|
|
for(x=0;x<width;x+=8){
|
|
int b;
|
|
int qi;
|
|
int var;
|
|
qi=_dec->state.qis[frag->qii];
|
|
var=*variance;
|
|
b=(x<=0)|(x+8>=width)<<1|(y<=0)<<2|(y+8>=height)<<3;
|
|
if(strong&&var>sthresh){
|
|
oc_dering_block(idata+x,ystride,b,
|
|
_dec->pp_dc_scale[qi],_dec->pp_sharp_mod[qi],1);
|
|
if(_pli||!(b&1)&&*(variance-1)>OC_DERING_THRESH4||
|
|
!(b&2)&&variance[1]>OC_DERING_THRESH4||
|
|
!(b&4)&&*(variance-nhfrags)>OC_DERING_THRESH4||
|
|
!(b&8)&&variance[nhfrags]>OC_DERING_THRESH4){
|
|
oc_dering_block(idata+x,ystride,b,
|
|
_dec->pp_dc_scale[qi],_dec->pp_sharp_mod[qi],1);
|
|
oc_dering_block(idata+x,ystride,b,
|
|
_dec->pp_dc_scale[qi],_dec->pp_sharp_mod[qi],1);
|
|
}
|
|
}
|
|
else if(var>OC_DERING_THRESH2){
|
|
oc_dering_block(idata+x,ystride,b,
|
|
_dec->pp_dc_scale[qi],_dec->pp_sharp_mod[qi],1);
|
|
}
|
|
else if(var>OC_DERING_THRESH1){
|
|
oc_dering_block(idata+x,ystride,b,
|
|
_dec->pp_dc_scale[qi],_dec->pp_sharp_mod[qi],0);
|
|
}
|
|
frag++;
|
|
variance++;
|
|
}
|
|
idata+=ystride<<3;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
th_dec_ctx *th_decode_alloc(const th_info *_info,const th_setup_info *_setup){
|
|
oc_dec_ctx *dec;
|
|
if(_info==NULL||_setup==NULL)return NULL;
|
|
dec=_ogg_malloc(sizeof(*dec));
|
|
if(dec==NULL||oc_dec_init(dec,_info,_setup)<0){
|
|
_ogg_free(dec);
|
|
return NULL;
|
|
}
|
|
dec->state.curframe_num=0;
|
|
return dec;
|
|
}
|
|
|
|
void th_decode_free(th_dec_ctx *_dec){
|
|
if(_dec!=NULL){
|
|
oc_dec_clear(_dec);
|
|
_ogg_free(_dec);
|
|
}
|
|
}
|
|
|
|
int th_decode_ctl(th_dec_ctx *_dec,int _req,void *_buf,
|
|
size_t _buf_sz){
|
|
switch(_req){
|
|
case TH_DECCTL_GET_PPLEVEL_MAX:{
|
|
if(_dec==NULL||_buf==NULL)return TH_EFAULT;
|
|
if(_buf_sz!=sizeof(int))return TH_EINVAL;
|
|
(*(int *)_buf)=OC_PP_LEVEL_MAX;
|
|
return 0;
|
|
}break;
|
|
case TH_DECCTL_SET_PPLEVEL:{
|
|
int pp_level;
|
|
if(_dec==NULL||_buf==NULL)return TH_EFAULT;
|
|
if(_buf_sz!=sizeof(int))return TH_EINVAL;
|
|
pp_level=*(int *)_buf;
|
|
if(pp_level<0||pp_level>OC_PP_LEVEL_MAX)return TH_EINVAL;
|
|
_dec->pp_level=pp_level;
|
|
return 0;
|
|
}break;
|
|
case TH_DECCTL_SET_GRANPOS:{
|
|
ogg_int64_t granpos;
|
|
if(_dec==NULL||_buf==NULL)return TH_EFAULT;
|
|
if(_buf_sz!=sizeof(ogg_int64_t))return TH_EINVAL;
|
|
granpos=*(ogg_int64_t *)_buf;
|
|
if(granpos<0)return TH_EINVAL;
|
|
_dec->state.granpos=granpos;
|
|
_dec->state.keyframe_num=(granpos>>_dec->state.info.keyframe_granule_shift)
|
|
-_dec->state.granpos_bias;
|
|
_dec->state.curframe_num=_dec->state.keyframe_num
|
|
+(granpos&(1<<_dec->state.info.keyframe_granule_shift)-1);
|
|
return 0;
|
|
}break;
|
|
case TH_DECCTL_SET_STRIPE_CB:{
|
|
th_stripe_callback *cb;
|
|
if(_dec==NULL||_buf==NULL)return TH_EFAULT;
|
|
if(_buf_sz!=sizeof(th_stripe_callback))return TH_EINVAL;
|
|
cb=(th_stripe_callback *)_buf;
|
|
_dec->stripe_cb.ctx=cb->ctx;
|
|
_dec->stripe_cb.stripe_decoded=cb->stripe_decoded;
|
|
return 0;
|
|
}break;
|
|
#ifdef HAVE_CAIRO
|
|
case TH_DECCTL_SET_TELEMETRY_MBMODE:{
|
|
if(_dec==NULL||_buf==NULL)return TH_EFAULT;
|
|
if(_buf_sz!=sizeof(int))return TH_EINVAL;
|
|
_dec->telemetry=1;
|
|
_dec->telemetry_mbmode=*(int *)_buf;
|
|
return 0;
|
|
}break;
|
|
case TH_DECCTL_SET_TELEMETRY_MV:{
|
|
if(_dec==NULL||_buf==NULL)return TH_EFAULT;
|
|
if(_buf_sz!=sizeof(int))return TH_EINVAL;
|
|
_dec->telemetry=1;
|
|
_dec->telemetry_mv=*(int *)_buf;
|
|
return 0;
|
|
}break;
|
|
case TH_DECCTL_SET_TELEMETRY_QI:{
|
|
if(_dec==NULL||_buf==NULL)return TH_EFAULT;
|
|
if(_buf_sz!=sizeof(int))return TH_EINVAL;
|
|
_dec->telemetry=1;
|
|
_dec->telemetry_qi=*(int *)_buf;
|
|
return 0;
|
|
}break;
|
|
case TH_DECCTL_SET_TELEMETRY_BITS:{
|
|
if(_dec==NULL||_buf==NULL)return TH_EFAULT;
|
|
if(_buf_sz!=sizeof(int))return TH_EINVAL;
|
|
_dec->telemetry=1;
|
|
_dec->telemetry_bits=*(int *)_buf;
|
|
return 0;
|
|
}break;
|
|
#endif
|
|
default:return TH_EIMPL;
|
|
}
|
|
}
|
|
|
|
/*We're decoding an INTER frame, but have no initialized reference
|
|
buffers (i.e., decoding did not start on a key frame).
|
|
We initialize them to a solid gray here.*/
|
|
static void oc_dec_init_dummy_frame(th_dec_ctx *_dec){
|
|
th_info *info;
|
|
size_t yplane_sz;
|
|
size_t cplane_sz;
|
|
int yhstride;
|
|
int yheight;
|
|
int chstride;
|
|
int cheight;
|
|
_dec->state.ref_frame_idx[OC_FRAME_GOLD]=0;
|
|
_dec->state.ref_frame_idx[OC_FRAME_PREV]=0;
|
|
_dec->state.ref_frame_idx[OC_FRAME_SELF]=1;
|
|
info=&_dec->state.info;
|
|
yhstride=info->frame_width+2*OC_UMV_PADDING;
|
|
yheight=info->frame_height+2*OC_UMV_PADDING;
|
|
chstride=yhstride>>!(info->pixel_fmt&1);
|
|
cheight=yheight>>!(info->pixel_fmt&2);
|
|
yplane_sz=yhstride*(size_t)yheight;
|
|
cplane_sz=chstride*(size_t)cheight;
|
|
memset(_dec->state.ref_frame_data[0],0x80,yplane_sz+2*cplane_sz);
|
|
}
|
|
|
|
int th_decode_packetin(th_dec_ctx *_dec,const ogg_packet *_op,
|
|
ogg_int64_t *_granpos){
|
|
int ret;
|
|
if(_dec==NULL||_op==NULL)return TH_EFAULT;
|
|
/*A completely empty packet indicates a dropped frame and is treated exactly
|
|
like an inter frame with no coded blocks.
|
|
Only proceed if we have a non-empty packet.*/
|
|
if(_op->bytes!=0){
|
|
oc_dec_pipeline_state pipe;
|
|
th_ycbcr_buffer stripe_buf;
|
|
int stripe_fragy;
|
|
int refi;
|
|
int pli;
|
|
int notstart;
|
|
int notdone;
|
|
oc_pack_readinit(&_dec->opb,_op->packet,_op->bytes);
|
|
#if defined(HAVE_CAIRO)
|
|
_dec->telemetry_frame_bytes=_op->bytes;
|
|
#endif
|
|
ret=oc_dec_frame_header_unpack(_dec);
|
|
if(ret<0)return ret;
|
|
/*Select a free buffer to use for the reconstructed version of this
|
|
frame.*/
|
|
if(_dec->state.frame_type!=OC_INTRA_FRAME&&
|
|
(_dec->state.ref_frame_idx[OC_FRAME_GOLD]<0||
|
|
_dec->state.ref_frame_idx[OC_FRAME_PREV]<0)){
|
|
/*No reference frames yet!*/
|
|
oc_dec_init_dummy_frame(_dec);
|
|
refi=_dec->state.ref_frame_idx[OC_FRAME_SELF];
|
|
}
|
|
else{
|
|
for(refi=0;refi==_dec->state.ref_frame_idx[OC_FRAME_GOLD]||
|
|
refi==_dec->state.ref_frame_idx[OC_FRAME_PREV];refi++);
|
|
_dec->state.ref_frame_idx[OC_FRAME_SELF]=refi;
|
|
}
|
|
if(_dec->state.frame_type==OC_INTRA_FRAME){
|
|
oc_dec_mark_all_intra(_dec);
|
|
_dec->state.keyframe_num=_dec->state.curframe_num;
|
|
#if defined(HAVE_CAIRO)
|
|
_dec->telemetry_coding_bytes=
|
|
_dec->telemetry_mode_bytes=
|
|
_dec->telemetry_mv_bytes=oc_pack_bytes_left(&_dec->opb);
|
|
#endif
|
|
}
|
|
else{
|
|
oc_dec_coded_flags_unpack(_dec);
|
|
#if defined(HAVE_CAIRO)
|
|
_dec->telemetry_coding_bytes=oc_pack_bytes_left(&_dec->opb);
|
|
#endif
|
|
oc_dec_mb_modes_unpack(_dec);
|
|
#if defined(HAVE_CAIRO)
|
|
_dec->telemetry_mode_bytes=oc_pack_bytes_left(&_dec->opb);
|
|
#endif
|
|
oc_dec_mv_unpack_and_frag_modes_fill(_dec);
|
|
#if defined(HAVE_CAIRO)
|
|
_dec->telemetry_mv_bytes=oc_pack_bytes_left(&_dec->opb);
|
|
#endif
|
|
}
|
|
oc_dec_block_qis_unpack(_dec);
|
|
#if defined(HAVE_CAIRO)
|
|
_dec->telemetry_qi_bytes=oc_pack_bytes_left(&_dec->opb);
|
|
#endif
|
|
oc_dec_residual_tokens_unpack(_dec);
|
|
/*Update granule position.
|
|
This must be done before the striped decode callbacks so that the
|
|
application knows what to do with the frame data.*/
|
|
_dec->state.granpos=(_dec->state.keyframe_num+_dec->state.granpos_bias<<
|
|
_dec->state.info.keyframe_granule_shift)
|
|
+(_dec->state.curframe_num-_dec->state.keyframe_num);
|
|
_dec->state.curframe_num++;
|
|
if(_granpos!=NULL)*_granpos=_dec->state.granpos;
|
|
/*All of the rest of the operations -- DC prediction reversal,
|
|
reconstructing coded fragments, copying uncoded fragments, loop
|
|
filtering, extending borders, and out-of-loop post-processing -- should
|
|
be pipelined.
|
|
I.e., DC prediction reversal, reconstruction, and uncoded fragment
|
|
copying are done for one or two super block rows, then loop filtering is
|
|
run as far as it can, then bordering copying, then post-processing.
|
|
For 4:2:0 video a Minimum Codable Unit or MCU contains two luma super
|
|
block rows, and one chroma.
|
|
Otherwise, an MCU consists of one super block row from each plane.
|
|
Inside each MCU, we perform all of the steps on one color plane before
|
|
moving on to the next.
|
|
After reconstruction, the additional filtering stages introduce a delay
|
|
since they need some pixels from the next fragment row.
|
|
Thus the actual number of decoded rows available is slightly smaller for
|
|
the first MCU, and slightly larger for the last.
|
|
|
|
This entire process allows us to operate on the data while it is still in
|
|
cache, resulting in big performance improvements.
|
|
An application callback allows further application processing (blitting
|
|
to video memory, color conversion, etc.) to also use the data while it's
|
|
in cache.*/
|
|
oc_dec_pipeline_init(_dec,&pipe);
|
|
oc_ycbcr_buffer_flip(stripe_buf,_dec->pp_frame_buf);
|
|
notstart=0;
|
|
notdone=1;
|
|
for(stripe_fragy=0;notdone;stripe_fragy+=pipe.mcu_nvfrags){
|
|
int avail_fragy0;
|
|
int avail_fragy_end;
|
|
avail_fragy0=avail_fragy_end=_dec->state.fplanes[0].nvfrags;
|
|
notdone=stripe_fragy+pipe.mcu_nvfrags<avail_fragy_end;
|
|
for(pli=0;pli<3;pli++){
|
|
oc_fragment_plane *fplane;
|
|
int frag_shift;
|
|
int pp_offset;
|
|
int sdelay;
|
|
int edelay;
|
|
fplane=_dec->state.fplanes+pli;
|
|
/*Compute the first and last fragment row of the current MCU for this
|
|
plane.*/
|
|
frag_shift=pli!=0&&!(_dec->state.info.pixel_fmt&2);
|
|
pipe.fragy0[pli]=stripe_fragy>>frag_shift;
|
|
pipe.fragy_end[pli]=OC_MINI(fplane->nvfrags,
|
|
pipe.fragy0[pli]+(pipe.mcu_nvfrags>>frag_shift));
|
|
oc_dec_dc_unpredict_mcu_plane(_dec,&pipe,pli);
|
|
oc_dec_frags_recon_mcu_plane(_dec,&pipe,pli);
|
|
sdelay=edelay=0;
|
|
if(pipe.loop_filter){
|
|
sdelay+=notstart;
|
|
edelay+=notdone;
|
|
oc_state_loop_filter_frag_rows(&_dec->state,pipe.bounding_values,
|
|
refi,pli,pipe.fragy0[pli]-sdelay,pipe.fragy_end[pli]-edelay);
|
|
}
|
|
/*To fill the borders, we have an additional two pixel delay, since a
|
|
fragment in the next row could filter its top edge, using two pixels
|
|
from a fragment in this row.
|
|
But there's no reason to delay a full fragment between the two.*/
|
|
oc_state_borders_fill_rows(&_dec->state,refi,pli,
|
|
(pipe.fragy0[pli]-sdelay<<3)-(sdelay<<1),
|
|
(pipe.fragy_end[pli]-edelay<<3)-(edelay<<1));
|
|
/*Out-of-loop post-processing.*/
|
|
pp_offset=3*(pli!=0);
|
|
if(pipe.pp_level>=OC_PP_LEVEL_DEBLOCKY+pp_offset){
|
|
/*Perform de-blocking in one plane.*/
|
|
sdelay+=notstart;
|
|
edelay+=notdone;
|
|
oc_dec_deblock_frag_rows(_dec,_dec->pp_frame_buf,
|
|
_dec->state.ref_frame_bufs[refi],pli,
|
|
pipe.fragy0[pli]-sdelay,pipe.fragy_end[pli]-edelay);
|
|
if(pipe.pp_level>=OC_PP_LEVEL_DERINGY+pp_offset){
|
|
/*Perform de-ringing in one plane.*/
|
|
sdelay+=notstart;
|
|
edelay+=notdone;
|
|
oc_dec_dering_frag_rows(_dec,_dec->pp_frame_buf,pli,
|
|
pipe.fragy0[pli]-sdelay,pipe.fragy_end[pli]-edelay);
|
|
}
|
|
}
|
|
/*If no post-processing is done, we still need to delay a row for the
|
|
loop filter, thanks to the strange filtering order VP3 chose.*/
|
|
else if(pipe.loop_filter){
|
|
sdelay+=notstart;
|
|
edelay+=notdone;
|
|
}
|
|
/*Compute the intersection of the available rows in all planes.
|
|
If chroma is sub-sampled, the effect of each of its delays is
|
|
doubled, but luma might have more post-processing filters enabled
|
|
than chroma, so we don't know up front which one is the limiting
|
|
factor.*/
|
|
avail_fragy0=OC_MINI(avail_fragy0,pipe.fragy0[pli]-sdelay<<frag_shift);
|
|
avail_fragy_end=OC_MINI(avail_fragy_end,
|
|
pipe.fragy_end[pli]-edelay<<frag_shift);
|
|
}
|
|
if(_dec->stripe_cb.stripe_decoded!=NULL){
|
|
/*The callback might want to use the FPU, so let's make sure they can.
|
|
We violate all kinds of ABI restrictions by not doing this until
|
|
now, but none of them actually matter since we don't use floating
|
|
point ourselves.*/
|
|
oc_restore_fpu(&_dec->state);
|
|
/*Make the callback, ensuring we flip the sense of the "start" and
|
|
"end" of the available region upside down.*/
|
|
(*_dec->stripe_cb.stripe_decoded)(_dec->stripe_cb.ctx,stripe_buf,
|
|
_dec->state.fplanes[0].nvfrags-avail_fragy_end,
|
|
_dec->state.fplanes[0].nvfrags-avail_fragy0);
|
|
}
|
|
notstart=1;
|
|
}
|
|
/*Finish filling in the reference frame borders.*/
|
|
for(pli=0;pli<3;pli++)oc_state_borders_fill_caps(&_dec->state,refi,pli);
|
|
/*Update the reference frame indices.*/
|
|
if(_dec->state.frame_type==OC_INTRA_FRAME){
|
|
/*The new frame becomes both the previous and gold reference frames.*/
|
|
_dec->state.ref_frame_idx[OC_FRAME_GOLD]=
|
|
_dec->state.ref_frame_idx[OC_FRAME_PREV]=
|
|
_dec->state.ref_frame_idx[OC_FRAME_SELF];
|
|
}
|
|
else{
|
|
/*Otherwise, just replace the previous reference frame.*/
|
|
_dec->state.ref_frame_idx[OC_FRAME_PREV]=
|
|
_dec->state.ref_frame_idx[OC_FRAME_SELF];
|
|
}
|
|
/*Restore the FPU before dump_frame, since that _does_ use the FPU (for PNG
|
|
gamma values, if nothing else).*/
|
|
oc_restore_fpu(&_dec->state);
|
|
#if defined(OC_DUMP_IMAGES)
|
|
/*Don't dump images for dropped frames.*/
|
|
oc_state_dump_frame(&_dec->state,OC_FRAME_SELF,"dec");
|
|
#endif
|
|
return 0;
|
|
}
|
|
else{
|
|
if(_dec->state.ref_frame_idx[OC_FRAME_GOLD]<0||
|
|
_dec->state.ref_frame_idx[OC_FRAME_PREV]<0){
|
|
int refi;
|
|
/*No reference frames yet!*/
|
|
oc_dec_init_dummy_frame(_dec);
|
|
refi=_dec->state.ref_frame_idx[OC_FRAME_PREV];
|
|
_dec->state.ref_frame_idx[OC_FRAME_SELF]=refi;
|
|
memcpy(_dec->pp_frame_buf,_dec->state.ref_frame_bufs[refi],
|
|
sizeof(_dec->pp_frame_buf[0])*3);
|
|
}
|
|
/*Just update the granule position and return.*/
|
|
_dec->state.granpos=(_dec->state.keyframe_num+_dec->state.granpos_bias<<
|
|
_dec->state.info.keyframe_granule_shift)
|
|
+(_dec->state.curframe_num-_dec->state.keyframe_num);
|
|
_dec->state.curframe_num++;
|
|
if(_granpos!=NULL)*_granpos=_dec->state.granpos;
|
|
return TH_DUPFRAME;
|
|
}
|
|
}
|
|
|
|
int th_decode_ycbcr_out(th_dec_ctx *_dec,th_ycbcr_buffer _ycbcr){
|
|
if(_dec==NULL||_ycbcr==NULL)return TH_EFAULT;
|
|
oc_ycbcr_buffer_flip(_ycbcr,_dec->pp_frame_buf);
|
|
#if defined(HAVE_CAIRO)
|
|
/*If telemetry ioctls are active, we need to draw to the output buffer.
|
|
Stuff the plane into cairo.*/
|
|
if(_dec->telemetry){
|
|
cairo_surface_t *cs;
|
|
unsigned char *data;
|
|
unsigned char *y_row;
|
|
unsigned char *u_row;
|
|
unsigned char *v_row;
|
|
unsigned char *rgb_row;
|
|
int cstride;
|
|
int w;
|
|
int h;
|
|
int x;
|
|
int y;
|
|
int hdec;
|
|
int vdec;
|
|
w=_ycbcr[0].width;
|
|
h=_ycbcr[0].height;
|
|
hdec=!(_dec->state.info.pixel_fmt&1);
|
|
vdec=!(_dec->state.info.pixel_fmt&2);
|
|
/*Lazy data buffer init.
|
|
We could try to re-use the post-processing buffer, which would save
|
|
memory, but complicate the allocation logic there.
|
|
I don't think anyone cares about memory usage when using telemetry; it is
|
|
not meant for embedded devices.*/
|
|
if(_dec->telemetry_frame_data==NULL){
|
|
_dec->telemetry_frame_data=_ogg_malloc(
|
|
(w*h+2*(w>>hdec)*(h>>vdec))*sizeof(*_dec->telemetry_frame_data));
|
|
if(_dec->telemetry_frame_data==NULL)return 0;
|
|
}
|
|
cs=cairo_image_surface_create(CAIRO_FORMAT_RGB24,w,h);
|
|
/*Sadly, no YUV support in Cairo (yet); convert into the RGB buffer.*/
|
|
data=cairo_image_surface_get_data(cs);
|
|
if(data==NULL){
|
|
cairo_surface_destroy(cs);
|
|
return 0;
|
|
}
|
|
cstride=cairo_image_surface_get_stride(cs);
|
|
y_row=_ycbcr[0].data;
|
|
u_row=_ycbcr[1].data;
|
|
v_row=_ycbcr[2].data;
|
|
rgb_row=data;
|
|
for(y=0;y<h;y++){
|
|
for(x=0;x<w;x++){
|
|
int r;
|
|
int g;
|
|
int b;
|
|
r=(1904000*y_row[x]+2609823*v_row[x>>hdec]-363703744)/1635200;
|
|
g=(3827562*y_row[x]-1287801*u_row[x>>hdec]
|
|
-2672387*v_row[x>>hdec]+447306710)/3287200;
|
|
b=(952000*y_row[x]+1649289*u_row[x>>hdec]-225932192)/817600;
|
|
rgb_row[4*x+0]=OC_CLAMP255(b);
|
|
rgb_row[4*x+1]=OC_CLAMP255(g);
|
|
rgb_row[4*x+2]=OC_CLAMP255(r);
|
|
}
|
|
y_row+=_ycbcr[0].stride;
|
|
u_row+=_ycbcr[1].stride&-((y&1)|!vdec);
|
|
v_row+=_ycbcr[2].stride&-((y&1)|!vdec);
|
|
rgb_row+=cstride;
|
|
}
|
|
/*Draw coded identifier for each macroblock (stored in Hilbert order).*/
|
|
{
|
|
cairo_t *c;
|
|
const oc_fragment *frags;
|
|
oc_mv *frag_mvs;
|
|
const signed char *mb_modes;
|
|
oc_mb_map *mb_maps;
|
|
size_t nmbs;
|
|
size_t mbi;
|
|
int row2;
|
|
int col2;
|
|
int qim[3]={0,0,0};
|
|
if(_dec->state.nqis==2){
|
|
int bqi;
|
|
bqi=_dec->state.qis[0];
|
|
if(_dec->state.qis[1]>bqi)qim[1]=1;
|
|
if(_dec->state.qis[1]<bqi)qim[1]=-1;
|
|
}
|
|
if(_dec->state.nqis==3){
|
|
int bqi;
|
|
int cqi;
|
|
int dqi;
|
|
bqi=_dec->state.qis[0];
|
|
cqi=_dec->state.qis[1];
|
|
dqi=_dec->state.qis[2];
|
|
if(cqi>bqi&&dqi>bqi){
|
|
if(dqi>cqi){
|
|
qim[1]=1;
|
|
qim[2]=2;
|
|
}
|
|
else{
|
|
qim[1]=2;
|
|
qim[2]=1;
|
|
}
|
|
}
|
|
else if(cqi<bqi&&dqi<bqi){
|
|
if(dqi<cqi){
|
|
qim[1]=-1;
|
|
qim[2]=-2;
|
|
}
|
|
else{
|
|
qim[1]=-2;
|
|
qim[2]=-1;
|
|
}
|
|
}
|
|
else{
|
|
if(cqi<bqi)qim[1]=-1;
|
|
else qim[1]=1;
|
|
if(dqi<bqi)qim[2]=-1;
|
|
else qim[2]=1;
|
|
}
|
|
}
|
|
c=cairo_create(cs);
|
|
frags=_dec->state.frags;
|
|
frag_mvs=_dec->state.frag_mvs;
|
|
mb_modes=_dec->state.mb_modes;
|
|
mb_maps=_dec->state.mb_maps;
|
|
nmbs=_dec->state.nmbs;
|
|
row2=0;
|
|
col2=0;
|
|
for(mbi=0;mbi<nmbs;mbi++){
|
|
float x;
|
|
float y;
|
|
int bi;
|
|
y=h-(row2+((col2+1>>1)&1))*16-16;
|
|
x=(col2>>1)*16;
|
|
cairo_set_line_width(c,1.);
|
|
/*Keyframe (all intra) red box.*/
|
|
if(_dec->state.frame_type==OC_INTRA_FRAME){
|
|
if(_dec->telemetry_mbmode&0x02){
|
|
cairo_set_source_rgba(c,1.,0,0,.5);
|
|
cairo_rectangle(c,x+2.5,y+2.5,11,11);
|
|
cairo_stroke_preserve(c);
|
|
cairo_set_source_rgba(c,1.,0,0,.25);
|
|
cairo_fill(c);
|
|
}
|
|
}
|
|
else{
|
|
const signed char *frag_mv;
|
|
ptrdiff_t fragi;
|
|
for(bi=0;bi<4;bi++){
|
|
fragi=mb_maps[mbi][0][bi];
|
|
if(fragi>=0&&frags[fragi].coded){
|
|
frag_mv=frag_mvs[fragi];
|
|
break;
|
|
}
|
|
}
|
|
if(bi<4){
|
|
switch(mb_modes[mbi]){
|
|
case OC_MODE_INTRA:{
|
|
if(_dec->telemetry_mbmode&0x02){
|
|
cairo_set_source_rgba(c,1.,0,0,.5);
|
|
cairo_rectangle(c,x+2.5,y+2.5,11,11);
|
|
cairo_stroke_preserve(c);
|
|
cairo_set_source_rgba(c,1.,0,0,.25);
|
|
cairo_fill(c);
|
|
}
|
|
}break;
|
|
case OC_MODE_INTER_NOMV:{
|
|
if(_dec->telemetry_mbmode&0x01){
|
|
cairo_set_source_rgba(c,0,0,1.,.5);
|
|
cairo_rectangle(c,x+2.5,y+2.5,11,11);
|
|
cairo_stroke_preserve(c);
|
|
cairo_set_source_rgba(c,0,0,1.,.25);
|
|
cairo_fill(c);
|
|
}
|
|
}break;
|
|
case OC_MODE_INTER_MV:{
|
|
if(_dec->telemetry_mbmode&0x04){
|
|
cairo_rectangle(c,x+2.5,y+2.5,11,11);
|
|
cairo_set_source_rgba(c,0,1.,0,.5);
|
|
cairo_stroke(c);
|
|
}
|
|
if(_dec->telemetry_mv&0x04){
|
|
cairo_move_to(c,x+8+frag_mv[0],y+8-frag_mv[1]);
|
|
cairo_set_source_rgba(c,1.,1.,1.,.9);
|
|
cairo_set_line_width(c,3.);
|
|
cairo_line_to(c,x+8+frag_mv[0]*.66,y+8-frag_mv[1]*.66);
|
|
cairo_stroke_preserve(c);
|
|
cairo_set_line_width(c,2.);
|
|
cairo_line_to(c,x+8+frag_mv[0]*.33,y+8-frag_mv[1]*.33);
|
|
cairo_stroke_preserve(c);
|
|
cairo_set_line_width(c,1.);
|
|
cairo_line_to(c,x+8,y+8);
|
|
cairo_stroke(c);
|
|
}
|
|
}break;
|
|
case OC_MODE_INTER_MV_LAST:{
|
|
if(_dec->telemetry_mbmode&0x08){
|
|
cairo_rectangle(c,x+2.5,y+2.5,11,11);
|
|
cairo_set_source_rgba(c,0,1.,0,.5);
|
|
cairo_move_to(c,x+13.5,y+2.5);
|
|
cairo_line_to(c,x+2.5,y+8);
|
|
cairo_line_to(c,x+13.5,y+13.5);
|
|
cairo_stroke(c);
|
|
}
|
|
if(_dec->telemetry_mv&0x08){
|
|
cairo_move_to(c,x+8+frag_mv[0],y+8-frag_mv[1]);
|
|
cairo_set_source_rgba(c,1.,1.,1.,.9);
|
|
cairo_set_line_width(c,3.);
|
|
cairo_line_to(c,x+8+frag_mv[0]*.66,y+8-frag_mv[1]*.66);
|
|
cairo_stroke_preserve(c);
|
|
cairo_set_line_width(c,2.);
|
|
cairo_line_to(c,x+8+frag_mv[0]*.33,y+8-frag_mv[1]*.33);
|
|
cairo_stroke_preserve(c);
|
|
cairo_set_line_width(c,1.);
|
|
cairo_line_to(c,x+8,y+8);
|
|
cairo_stroke(c);
|
|
}
|
|
}break;
|
|
case OC_MODE_INTER_MV_LAST2:{
|
|
if(_dec->telemetry_mbmode&0x10){
|
|
cairo_rectangle(c,x+2.5,y+2.5,11,11);
|
|
cairo_set_source_rgba(c,0,1.,0,.5);
|
|
cairo_move_to(c,x+8,y+2.5);
|
|
cairo_line_to(c,x+2.5,y+8);
|
|
cairo_line_to(c,x+8,y+13.5);
|
|
cairo_move_to(c,x+13.5,y+2.5);
|
|
cairo_line_to(c,x+8,y+8);
|
|
cairo_line_to(c,x+13.5,y+13.5);
|
|
cairo_stroke(c);
|
|
}
|
|
if(_dec->telemetry_mv&0x10){
|
|
cairo_move_to(c,x+8+frag_mv[0],y+8-frag_mv[1]);
|
|
cairo_set_source_rgba(c,1.,1.,1.,.9);
|
|
cairo_set_line_width(c,3.);
|
|
cairo_line_to(c,x+8+frag_mv[0]*.66,y+8-frag_mv[1]*.66);
|
|
cairo_stroke_preserve(c);
|
|
cairo_set_line_width(c,2.);
|
|
cairo_line_to(c,x+8+frag_mv[0]*.33,y+8-frag_mv[1]*.33);
|
|
cairo_stroke_preserve(c);
|
|
cairo_set_line_width(c,1.);
|
|
cairo_line_to(c,x+8,y+8);
|
|
cairo_stroke(c);
|
|
}
|
|
}break;
|
|
case OC_MODE_GOLDEN_NOMV:{
|
|
if(_dec->telemetry_mbmode&0x20){
|
|
cairo_set_source_rgba(c,1.,1.,0,.5);
|
|
cairo_rectangle(c,x+2.5,y+2.5,11,11);
|
|
cairo_stroke_preserve(c);
|
|
cairo_set_source_rgba(c,1.,1.,0,.25);
|
|
cairo_fill(c);
|
|
}
|
|
}break;
|
|
case OC_MODE_GOLDEN_MV:{
|
|
if(_dec->telemetry_mbmode&0x40){
|
|
cairo_rectangle(c,x+2.5,y+2.5,11,11);
|
|
cairo_set_source_rgba(c,1.,1.,0,.5);
|
|
cairo_stroke(c);
|
|
}
|
|
if(_dec->telemetry_mv&0x40){
|
|
cairo_move_to(c,x+8+frag_mv[0],y+8-frag_mv[1]);
|
|
cairo_set_source_rgba(c,1.,1.,1.,.9);
|
|
cairo_set_line_width(c,3.);
|
|
cairo_line_to(c,x+8+frag_mv[0]*.66,y+8-frag_mv[1]*.66);
|
|
cairo_stroke_preserve(c);
|
|
cairo_set_line_width(c,2.);
|
|
cairo_line_to(c,x+8+frag_mv[0]*.33,y+8-frag_mv[1]*.33);
|
|
cairo_stroke_preserve(c);
|
|
cairo_set_line_width(c,1.);
|
|
cairo_line_to(c,x+8,y+8);
|
|
cairo_stroke(c);
|
|
}
|
|
}break;
|
|
case OC_MODE_INTER_MV_FOUR:{
|
|
if(_dec->telemetry_mbmode&0x80){
|
|
cairo_rectangle(c,x+2.5,y+2.5,4,4);
|
|
cairo_rectangle(c,x+9.5,y+2.5,4,4);
|
|
cairo_rectangle(c,x+2.5,y+9.5,4,4);
|
|
cairo_rectangle(c,x+9.5,y+9.5,4,4);
|
|
cairo_set_source_rgba(c,0,1.,0,.5);
|
|
cairo_stroke(c);
|
|
}
|
|
/*4mv is odd, coded in raster order.*/
|
|
fragi=mb_maps[mbi][0][0];
|
|
if(frags[fragi].coded&&_dec->telemetry_mv&0x80){
|
|
frag_mv=frag_mvs[fragi];
|
|
cairo_move_to(c,x+4+frag_mv[0],y+12-frag_mv[1]);
|
|
cairo_set_source_rgba(c,1.,1.,1.,.9);
|
|
cairo_set_line_width(c,3.);
|
|
cairo_line_to(c,x+4+frag_mv[0]*.66,y+12-frag_mv[1]*.66);
|
|
cairo_stroke_preserve(c);
|
|
cairo_set_line_width(c,2.);
|
|
cairo_line_to(c,x+4+frag_mv[0]*.33,y+12-frag_mv[1]*.33);
|
|
cairo_stroke_preserve(c);
|
|
cairo_set_line_width(c,1.);
|
|
cairo_line_to(c,x+4,y+12);
|
|
cairo_stroke(c);
|
|
}
|
|
fragi=mb_maps[mbi][0][1];
|
|
if(frags[fragi].coded&&_dec->telemetry_mv&0x80){
|
|
frag_mv=frag_mvs[fragi];
|
|
cairo_move_to(c,x+12+frag_mv[0],y+12-frag_mv[1]);
|
|
cairo_set_source_rgba(c,1.,1.,1.,.9);
|
|
cairo_set_line_width(c,3.);
|
|
cairo_line_to(c,x+12+frag_mv[0]*.66,y+12-frag_mv[1]*.66);
|
|
cairo_stroke_preserve(c);
|
|
cairo_set_line_width(c,2.);
|
|
cairo_line_to(c,x+12+frag_mv[0]*.33,y+12-frag_mv[1]*.33);
|
|
cairo_stroke_preserve(c);
|
|
cairo_set_line_width(c,1.);
|
|
cairo_line_to(c,x+12,y+12);
|
|
cairo_stroke(c);
|
|
}
|
|
fragi=mb_maps[mbi][0][2];
|
|
if(frags[fragi].coded&&_dec->telemetry_mv&0x80){
|
|
frag_mv=frag_mvs[fragi];
|
|
cairo_move_to(c,x+4+frag_mv[0],y+4-frag_mv[1]);
|
|
cairo_set_source_rgba(c,1.,1.,1.,.9);
|
|
cairo_set_line_width(c,3.);
|
|
cairo_line_to(c,x+4+frag_mv[0]*.66,y+4-frag_mv[1]*.66);
|
|
cairo_stroke_preserve(c);
|
|
cairo_set_line_width(c,2.);
|
|
cairo_line_to(c,x+4+frag_mv[0]*.33,y+4-frag_mv[1]*.33);
|
|
cairo_stroke_preserve(c);
|
|
cairo_set_line_width(c,1.);
|
|
cairo_line_to(c,x+4,y+4);
|
|
cairo_stroke(c);
|
|
}
|
|
fragi=mb_maps[mbi][0][3];
|
|
if(frags[fragi].coded&&_dec->telemetry_mv&0x80){
|
|
frag_mv=frag_mvs[fragi];
|
|
cairo_move_to(c,x+12+frag_mv[0],y+4-frag_mv[1]);
|
|
cairo_set_source_rgba(c,1.,1.,1.,.9);
|
|
cairo_set_line_width(c,3.);
|
|
cairo_line_to(c,x+12+frag_mv[0]*.66,y+4-frag_mv[1]*.66);
|
|
cairo_stroke_preserve(c);
|
|
cairo_set_line_width(c,2.);
|
|
cairo_line_to(c,x+12+frag_mv[0]*.33,y+4-frag_mv[1]*.33);
|
|
cairo_stroke_preserve(c);
|
|
cairo_set_line_width(c,1.);
|
|
cairo_line_to(c,x+12,y+4);
|
|
cairo_stroke(c);
|
|
}
|
|
}break;
|
|
}
|
|
}
|
|
}
|
|
/*qii illustration.*/
|
|
if(_dec->telemetry_qi&0x2){
|
|
cairo_set_line_cap(c,CAIRO_LINE_CAP_SQUARE);
|
|
for(bi=0;bi<4;bi++){
|
|
ptrdiff_t fragi;
|
|
int qiv;
|
|
int xp;
|
|
int yp;
|
|
xp=x+(bi&1)*8;
|
|
yp=y+8-(bi&2)*4;
|
|
fragi=mb_maps[mbi][0][bi];
|
|
if(fragi>=0&&frags[fragi].coded){
|
|
qiv=qim[frags[fragi].qii];
|
|
cairo_set_line_width(c,3.);
|
|
cairo_set_source_rgba(c,0.,0.,0.,.5);
|
|
switch(qiv){
|
|
/*Double plus:*/
|
|
case 2:{
|
|
if((bi&1)^((bi&2)>>1)){
|
|
cairo_move_to(c,xp+2.5,yp+1.5);
|
|
cairo_line_to(c,xp+2.5,yp+3.5);
|
|
cairo_move_to(c,xp+1.5,yp+2.5);
|
|
cairo_line_to(c,xp+3.5,yp+2.5);
|
|
cairo_move_to(c,xp+5.5,yp+4.5);
|
|
cairo_line_to(c,xp+5.5,yp+6.5);
|
|
cairo_move_to(c,xp+4.5,yp+5.5);
|
|
cairo_line_to(c,xp+6.5,yp+5.5);
|
|
cairo_stroke_preserve(c);
|
|
cairo_set_source_rgba(c,0.,1.,1.,1.);
|
|
}
|
|
else{
|
|
cairo_move_to(c,xp+5.5,yp+1.5);
|
|
cairo_line_to(c,xp+5.5,yp+3.5);
|
|
cairo_move_to(c,xp+4.5,yp+2.5);
|
|
cairo_line_to(c,xp+6.5,yp+2.5);
|
|
cairo_move_to(c,xp+2.5,yp+4.5);
|
|
cairo_line_to(c,xp+2.5,yp+6.5);
|
|
cairo_move_to(c,xp+1.5,yp+5.5);
|
|
cairo_line_to(c,xp+3.5,yp+5.5);
|
|
cairo_stroke_preserve(c);
|
|
cairo_set_source_rgba(c,0.,1.,1.,1.);
|
|
}
|
|
}break;
|
|
/*Double minus:*/
|
|
case -2:{
|
|
cairo_move_to(c,xp+2.5,yp+2.5);
|
|
cairo_line_to(c,xp+5.5,yp+2.5);
|
|
cairo_move_to(c,xp+2.5,yp+5.5);
|
|
cairo_line_to(c,xp+5.5,yp+5.5);
|
|
cairo_stroke_preserve(c);
|
|
cairo_set_source_rgba(c,1.,1.,1.,1.);
|
|
}break;
|
|
/*Plus:*/
|
|
case 1:{
|
|
if(bi&2==0)yp-=2;
|
|
if(bi&1==0)xp-=2;
|
|
cairo_move_to(c,xp+4.5,yp+2.5);
|
|
cairo_line_to(c,xp+4.5,yp+6.5);
|
|
cairo_move_to(c,xp+2.5,yp+4.5);
|
|
cairo_line_to(c,xp+6.5,yp+4.5);
|
|
cairo_stroke_preserve(c);
|
|
cairo_set_source_rgba(c,.1,1.,.3,1.);
|
|
break;
|
|
}
|
|
/*Fall through.*/
|
|
/*Minus:*/
|
|
case -1:{
|
|
cairo_move_to(c,xp+2.5,yp+4.5);
|
|
cairo_line_to(c,xp+6.5,yp+4.5);
|
|
cairo_stroke_preserve(c);
|
|
cairo_set_source_rgba(c,1.,.3,.1,1.);
|
|
}break;
|
|
default:continue;
|
|
}
|
|
cairo_set_line_width(c,1.);
|
|
cairo_stroke(c);
|
|
}
|
|
}
|
|
}
|
|
col2++;
|
|
if((col2>>1)>=_dec->state.nhmbs){
|
|
col2=0;
|
|
row2+=2;
|
|
}
|
|
}
|
|
/*Bit usage indicator[s]:*/
|
|
if(_dec->telemetry_bits){
|
|
int widths[6];
|
|
int fpsn;
|
|
int fpsd;
|
|
int mult;
|
|
int fullw;
|
|
int padw;
|
|
int i;
|
|
fpsn=_dec->state.info.fps_numerator;
|
|
fpsd=_dec->state.info.fps_denominator;
|
|
mult=(_dec->telemetry_bits>=0xFF?1:_dec->telemetry_bits);
|
|
fullw=250.f*h*fpsd*mult/fpsn;
|
|
padw=w-24;
|
|
/*Header and coded block bits.*/
|
|
if(_dec->telemetry_frame_bytes<0||
|
|
_dec->telemetry_frame_bytes==OC_LOTS_OF_BITS){
|
|
_dec->telemetry_frame_bytes=0;
|
|
}
|
|
if(_dec->telemetry_coding_bytes<0||
|
|
_dec->telemetry_coding_bytes>_dec->telemetry_frame_bytes){
|
|
_dec->telemetry_coding_bytes=0;
|
|
}
|
|
if(_dec->telemetry_mode_bytes<0||
|
|
_dec->telemetry_mode_bytes>_dec->telemetry_frame_bytes){
|
|
_dec->telemetry_mode_bytes=0;
|
|
}
|
|
if(_dec->telemetry_mv_bytes<0||
|
|
_dec->telemetry_mv_bytes>_dec->telemetry_frame_bytes){
|
|
_dec->telemetry_mv_bytes=0;
|
|
}
|
|
if(_dec->telemetry_qi_bytes<0||
|
|
_dec->telemetry_qi_bytes>_dec->telemetry_frame_bytes){
|
|
_dec->telemetry_qi_bytes=0;
|
|
}
|
|
if(_dec->telemetry_dc_bytes<0||
|
|
_dec->telemetry_dc_bytes>_dec->telemetry_frame_bytes){
|
|
_dec->telemetry_dc_bytes=0;
|
|
}
|
|
widths[0]=padw*(_dec->telemetry_frame_bytes-_dec->telemetry_coding_bytes)/fullw;
|
|
widths[1]=padw*(_dec->telemetry_coding_bytes-_dec->telemetry_mode_bytes)/fullw;
|
|
widths[2]=padw*(_dec->telemetry_mode_bytes-_dec->telemetry_mv_bytes)/fullw;
|
|
widths[3]=padw*(_dec->telemetry_mv_bytes-_dec->telemetry_qi_bytes)/fullw;
|
|
widths[4]=padw*(_dec->telemetry_qi_bytes-_dec->telemetry_dc_bytes)/fullw;
|
|
widths[5]=padw*(_dec->telemetry_dc_bytes)/fullw;
|
|
for(i=0;i<6;i++)if(widths[i]>w)widths[i]=w;
|
|
cairo_set_source_rgba(c,.0,.0,.0,.6);
|
|
cairo_rectangle(c,10,h-33,widths[0]+1,5);
|
|
cairo_rectangle(c,10,h-29,widths[1]+1,5);
|
|
cairo_rectangle(c,10,h-25,widths[2]+1,5);
|
|
cairo_rectangle(c,10,h-21,widths[3]+1,5);
|
|
cairo_rectangle(c,10,h-17,widths[4]+1,5);
|
|
cairo_rectangle(c,10,h-13,widths[5]+1,5);
|
|
cairo_fill(c);
|
|
cairo_set_source_rgb(c,1,0,0);
|
|
cairo_rectangle(c,10.5,h-32.5,widths[0],4);
|
|
cairo_fill(c);
|
|
cairo_set_source_rgb(c,0,1,0);
|
|
cairo_rectangle(c,10.5,h-28.5,widths[1],4);
|
|
cairo_fill(c);
|
|
cairo_set_source_rgb(c,0,0,1);
|
|
cairo_rectangle(c,10.5,h-24.5,widths[2],4);
|
|
cairo_fill(c);
|
|
cairo_set_source_rgb(c,.6,.4,.0);
|
|
cairo_rectangle(c,10.5,h-20.5,widths[3],4);
|
|
cairo_fill(c);
|
|
cairo_set_source_rgb(c,.3,.3,.3);
|
|
cairo_rectangle(c,10.5,h-16.5,widths[4],4);
|
|
cairo_fill(c);
|
|
cairo_set_source_rgb(c,.5,.5,.8);
|
|
cairo_rectangle(c,10.5,h-12.5,widths[5],4);
|
|
cairo_fill(c);
|
|
}
|
|
/*Master qi indicator[s]:*/
|
|
if(_dec->telemetry_qi&0x1){
|
|
cairo_text_extents_t extents;
|
|
char buffer[10];
|
|
int p;
|
|
int y;
|
|
p=0;
|
|
y=h-7.5;
|
|
if(_dec->state.qis[0]>=10)buffer[p++]=48+_dec->state.qis[0]/10;
|
|
buffer[p++]=48+_dec->state.qis[0]%10;
|
|
if(_dec->state.nqis>=2){
|
|
buffer[p++]=' ';
|
|
if(_dec->state.qis[1]>=10)buffer[p++]=48+_dec->state.qis[1]/10;
|
|
buffer[p++]=48+_dec->state.qis[1]%10;
|
|
}
|
|
if(_dec->state.nqis==3){
|
|
buffer[p++]=' ';
|
|
if(_dec->state.qis[2]>=10)buffer[p++]=48+_dec->state.qis[2]/10;
|
|
buffer[p++]=48+_dec->state.qis[2]%10;
|
|
}
|
|
buffer[p++]='\0';
|
|
cairo_select_font_face(c,"sans",
|
|
CAIRO_FONT_SLANT_NORMAL,CAIRO_FONT_WEIGHT_BOLD);
|
|
cairo_set_font_size(c,18);
|
|
cairo_text_extents(c,buffer,&extents);
|
|
cairo_set_source_rgb(c,1,1,1);
|
|
cairo_move_to(c,w-extents.x_advance-10,y);
|
|
cairo_show_text(c,buffer);
|
|
cairo_set_source_rgb(c,0,0,0);
|
|
cairo_move_to(c,w-extents.x_advance-10,y);
|
|
cairo_text_path(c,buffer);
|
|
cairo_set_line_width(c,.8);
|
|
cairo_set_line_join(c,CAIRO_LINE_JOIN_ROUND);
|
|
cairo_stroke(c);
|
|
}
|
|
cairo_destroy(c);
|
|
}
|
|
/*Out of the Cairo plane into the telemetry YUV buffer.*/
|
|
_ycbcr[0].data=_dec->telemetry_frame_data;
|
|
_ycbcr[0].stride=_ycbcr[0].width;
|
|
_ycbcr[1].data=_ycbcr[0].data+h*_ycbcr[0].stride;
|
|
_ycbcr[1].stride=_ycbcr[1].width;
|
|
_ycbcr[2].data=_ycbcr[1].data+(h>>vdec)*_ycbcr[1].stride;
|
|
_ycbcr[2].stride=_ycbcr[2].width;
|
|
y_row=_ycbcr[0].data;
|
|
u_row=_ycbcr[1].data;
|
|
v_row=_ycbcr[2].data;
|
|
rgb_row=data;
|
|
/*This is one of the few places it's worth handling chroma on a
|
|
case-by-case basis.*/
|
|
switch(_dec->state.info.pixel_fmt){
|
|
case TH_PF_420:{
|
|
for(y=0;y<h;y+=2){
|
|
unsigned char *y_row2;
|
|
unsigned char *rgb_row2;
|
|
y_row2=y_row+_ycbcr[0].stride;
|
|
rgb_row2=rgb_row+cstride;
|
|
for(x=0;x<w;x+=2){
|
|
int y;
|
|
int u;
|
|
int v;
|
|
y=(65481*rgb_row[4*x+2]+128553*rgb_row[4*x+1]
|
|
+24966*rgb_row[4*x+0]+4207500)/255000;
|
|
y_row[x]=OC_CLAMP255(y);
|
|
y=(65481*rgb_row[4*x+6]+128553*rgb_row[4*x+5]
|
|
+24966*rgb_row[4*x+4]+4207500)/255000;
|
|
y_row[x+1]=OC_CLAMP255(y);
|
|
y=(65481*rgb_row2[4*x+2]+128553*rgb_row2[4*x+1]
|
|
+24966*rgb_row2[4*x+0]+4207500)/255000;
|
|
y_row2[x]=OC_CLAMP255(y);
|
|
y=(65481*rgb_row2[4*x+6]+128553*rgb_row2[4*x+5]
|
|
+24966*rgb_row2[4*x+4]+4207500)/255000;
|
|
y_row2[x+1]=OC_CLAMP255(y);
|
|
u=(-8372*(rgb_row[4*x+2]+rgb_row[4*x+6]
|
|
+rgb_row2[4*x+2]+rgb_row2[4*x+6])
|
|
-16436*(rgb_row[4*x+1]+rgb_row[4*x+5]
|
|
+rgb_row2[4*x+1]+rgb_row2[4*x+5])
|
|
+24808*(rgb_row[4*x+0]+rgb_row[4*x+4]
|
|
+rgb_row2[4*x+0]+rgb_row2[4*x+4])+29032005)/225930;
|
|
v=(39256*(rgb_row[4*x+2]+rgb_row[4*x+6]
|
|
+rgb_row2[4*x+2]+rgb_row2[4*x+6])
|
|
-32872*(rgb_row[4*x+1]+rgb_row[4*x+5]
|
|
+rgb_row2[4*x+1]+rgb_row2[4*x+5])
|
|
-6384*(rgb_row[4*x+0]+rgb_row[4*x+4]
|
|
+rgb_row2[4*x+0]+rgb_row2[4*x+4])+45940035)/357510;
|
|
u_row[x>>1]=OC_CLAMP255(u);
|
|
v_row[x>>1]=OC_CLAMP255(v);
|
|
}
|
|
y_row+=_ycbcr[0].stride<<1;
|
|
u_row+=_ycbcr[1].stride;
|
|
v_row+=_ycbcr[2].stride;
|
|
rgb_row+=cstride<<1;
|
|
}
|
|
}break;
|
|
case TH_PF_422:{
|
|
for(y=0;y<h;y++){
|
|
for(x=0;x<w;x+=2){
|
|
int y;
|
|
int u;
|
|
int v;
|
|
y=(65481*rgb_row[4*x+2]+128553*rgb_row[4*x+1]
|
|
+24966*rgb_row[4*x+0]+4207500)/255000;
|
|
y_row[x]=OC_CLAMP255(y);
|
|
y=(65481*rgb_row[4*x+6]+128553*rgb_row[4*x+5]
|
|
+24966*rgb_row[4*x+4]+4207500)/255000;
|
|
y_row[x+1]=OC_CLAMP255(y);
|
|
u=(-16744*(rgb_row[4*x+2]+rgb_row[4*x+6])
|
|
-32872*(rgb_row[4*x+1]+rgb_row[4*x+5])
|
|
+49616*(rgb_row[4*x+0]+rgb_row[4*x+4])+29032005)/225930;
|
|
v=(78512*(rgb_row[4*x+2]+rgb_row[4*x+6])
|
|
-65744*(rgb_row[4*x+1]+rgb_row[4*x+5])
|
|
-12768*(rgb_row[4*x+0]+rgb_row[4*x+4])+45940035)/357510;
|
|
u_row[x>>1]=OC_CLAMP255(u);
|
|
v_row[x>>1]=OC_CLAMP255(v);
|
|
}
|
|
y_row+=_ycbcr[0].stride;
|
|
u_row+=_ycbcr[1].stride;
|
|
v_row+=_ycbcr[2].stride;
|
|
rgb_row+=cstride;
|
|
}
|
|
}break;
|
|
/*case TH_PF_444:*/
|
|
default:{
|
|
for(y=0;y<h;y++){
|
|
for(x=0;x<w;x++){
|
|
int y;
|
|
int u;
|
|
int v;
|
|
y=(65481*rgb_row[4*x+2]+128553*rgb_row[4*x+1]
|
|
+24966*rgb_row[4*x+0]+4207500)/255000;
|
|
u=(-33488*rgb_row[4*x+2]-65744*rgb_row[4*x+1]
|
|
+99232*rgb_row[4*x+0]+29032005)/225930;
|
|
v=(157024*rgb_row[4*x+2]-131488*rgb_row[4*x+1]
|
|
-25536*rgb_row[4*x+0]+45940035)/357510;
|
|
y_row[x]=OC_CLAMP255(y);
|
|
u_row[x]=OC_CLAMP255(u);
|
|
v_row[x]=OC_CLAMP255(v);
|
|
}
|
|
y_row+=_ycbcr[0].stride;
|
|
u_row+=_ycbcr[1].stride;
|
|
v_row+=_ycbcr[2].stride;
|
|
rgb_row+=cstride;
|
|
}
|
|
}break;
|
|
}
|
|
/*Finished.
|
|
Destroy the surface.*/
|
|
cairo_surface_destroy(cs);
|
|
}
|
|
#endif
|
|
return 0;
|
|
}
|