mirror of
https://github.com/FFmpeg/FFmpeg.git
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e5dcde620d
For all VLCs here, the number of bits of the VLC is write-only, because it is hardcoded at the call site. Therefore one can replace these VLC structures with the only thing that is actually used: The pointer to the VLCElem table. And in some cases one can even avoid this. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
1344 lines
50 KiB
C
1344 lines
50 KiB
C
/*
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* VC-1 and WMV3 decoder common code
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* Copyright (c) 2011 Mashiat Sarker Shakkhar
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* Copyright (c) 2006-2007 Konstantin Shishkov
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* Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* VC-1 and WMV3 decoder common code
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*/
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#include "avcodec.h"
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#include "decode.h"
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#include "mpegvideo.h"
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#include "vc1.h"
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#include "vc1data.h"
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#include "wmv2data.h"
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#include "unary.h"
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/***********************************************************************/
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/**
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* @name VC-1 Bitplane decoding
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* @see 8.7, p56
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* @{
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*/
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/** Decode rows by checking if they are skipped
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* @param plane Buffer to store decoded bits
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* @param[in] width Width of this buffer
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* @param[in] height Height of this buffer
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* @param[in] stride of this buffer
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*/
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static void decode_rowskip(uint8_t* plane, int width, int height, int stride,
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GetBitContext *gb)
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{
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int x, y;
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for (y = 0; y < height; y++) {
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if (!get_bits1(gb)) //rowskip
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memset(plane, 0, width);
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else
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for (x = 0; x < width; x++)
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plane[x] = get_bits1(gb);
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plane += stride;
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}
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}
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/** Decode columns by checking if they are skipped
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* @param plane Buffer to store decoded bits
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* @param[in] width Width of this buffer
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* @param[in] height Height of this buffer
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* @param[in] stride of this buffer
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* @todo FIXME: Optimize
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*/
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static void decode_colskip(uint8_t* plane, int width, int height, int stride,
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GetBitContext *gb)
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{
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int x, y;
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for (x = 0; x < width; x++) {
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if (!get_bits1(gb)) //colskip
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for (y = 0; y < height; y++)
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plane[y*stride] = 0;
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else
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for (y = 0; y < height; y++)
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plane[y*stride] = get_bits1(gb);
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plane ++;
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}
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}
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/** Decode a bitplane's bits
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* @param data bitplane where to store the decode bits
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* @param[out] raw_flag pointer to the flag indicating that this bitplane is not coded explicitly
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* @param v VC-1 context for bit reading and logging
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* @return Status
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* @todo FIXME: Optimize
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*/
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static int bitplane_decoding(uint8_t* data, int *raw_flag, VC1Context *v)
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{
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GetBitContext *gb = &v->s.gb;
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int imode, x, y, code, offset;
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uint8_t invert, *planep = data;
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int width, height, stride;
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width = v->s.mb_width;
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height = v->s.mb_height >> v->field_mode;
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stride = v->s.mb_stride;
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invert = get_bits1(gb);
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imode = get_vlc2(gb, ff_vc1_imode_vlc, VC1_IMODE_VLC_BITS, 1);
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*raw_flag = 0;
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switch (imode) {
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case IMODE_RAW:
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//Data is actually read in the MB layer (same for all tests == "raw")
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*raw_flag = 1; //invert ignored
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return invert;
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case IMODE_DIFF2:
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case IMODE_NORM2:
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if ((height * width) & 1) {
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*planep++ = get_bits1(gb);
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y = offset = 1;
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if (offset == width) {
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offset = 0;
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planep += stride - width;
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}
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}
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else
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y = offset = 0;
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// decode bitplane as one long line
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for (; y < height * width; y += 2) {
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code = get_vlc2(gb, ff_vc1_norm2_vlc, VC1_NORM2_VLC_BITS, 1);
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*planep++ = code & 1;
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offset++;
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if (offset == width) {
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offset = 0;
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planep += stride - width;
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}
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*planep++ = code >> 1;
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offset++;
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if (offset == width) {
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offset = 0;
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planep += stride - width;
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}
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}
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break;
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case IMODE_DIFF6:
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case IMODE_NORM6:
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if (!(height % 3) && (width % 3)) { // use 2x3 decoding
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for (y = 0; y < height; y += 3) {
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for (x = width & 1; x < width; x += 2) {
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code = get_vlc2(gb, ff_vc1_norm6_vlc, VC1_NORM6_VLC_BITS, 2);
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if (code < 0) {
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av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
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return -1;
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}
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planep[x + 0] = (code >> 0) & 1;
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planep[x + 1] = (code >> 1) & 1;
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planep[x + 0 + stride] = (code >> 2) & 1;
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planep[x + 1 + stride] = (code >> 3) & 1;
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planep[x + 0 + stride * 2] = (code >> 4) & 1;
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planep[x + 1 + stride * 2] = (code >> 5) & 1;
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}
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planep += stride * 3;
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}
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if (width & 1)
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decode_colskip(data, 1, height, stride, &v->s.gb);
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} else { // 3x2
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planep += (height & 1) * stride;
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for (y = height & 1; y < height; y += 2) {
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for (x = width % 3; x < width; x += 3) {
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code = get_vlc2(gb, ff_vc1_norm6_vlc, VC1_NORM6_VLC_BITS, 2);
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if (code < 0) {
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av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
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return -1;
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}
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planep[x + 0] = (code >> 0) & 1;
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planep[x + 1] = (code >> 1) & 1;
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planep[x + 2] = (code >> 2) & 1;
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planep[x + 0 + stride] = (code >> 3) & 1;
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planep[x + 1 + stride] = (code >> 4) & 1;
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planep[x + 2 + stride] = (code >> 5) & 1;
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}
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planep += stride * 2;
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}
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x = width % 3;
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if (x)
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decode_colskip(data, x, height, stride, &v->s.gb);
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if (height & 1)
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decode_rowskip(data + x, width - x, 1, stride, &v->s.gb);
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}
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break;
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case IMODE_ROWSKIP:
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decode_rowskip(data, width, height, stride, &v->s.gb);
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break;
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case IMODE_COLSKIP:
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decode_colskip(data, width, height, stride, &v->s.gb);
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break;
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default:
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break;
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}
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/* Applying diff operator */
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if (imode == IMODE_DIFF2 || imode == IMODE_DIFF6) {
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planep = data;
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planep[0] ^= invert;
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for (x = 1; x < width; x++)
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planep[x] ^= planep[x-1];
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for (y = 1; y < height; y++) {
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planep += stride;
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planep[0] ^= planep[-stride];
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for (x = 1; x < width; x++) {
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if (planep[x-1] != planep[x-stride]) planep[x] ^= invert;
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else planep[x] ^= planep[x-1];
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}
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}
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} else if (invert) {
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planep = data;
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for (x = 0; x < stride * height; x++)
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planep[x] = !planep[x]; //FIXME stride
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}
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return (imode << 1) + invert;
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}
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/** @} */ //Bitplane group
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/***********************************************************************/
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/** VOP Dquant decoding
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* @param v VC-1 Context
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*/
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static int vop_dquant_decoding(VC1Context *v)
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{
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GetBitContext *gb = &v->s.gb;
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int pqdiff;
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//variable size
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if (v->dquant != 2) {
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v->dquantfrm = get_bits1(gb);
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if (!v->dquantfrm)
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return 0;
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v->dqprofile = get_bits(gb, 2);
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switch (v->dqprofile) {
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case DQPROFILE_SINGLE_EDGE:
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case DQPROFILE_DOUBLE_EDGES:
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v->dqsbedge = get_bits(gb, 2);
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break;
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case DQPROFILE_ALL_MBS:
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v->dqbilevel = get_bits1(gb);
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if (!v->dqbilevel) {
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v->halfpq = 0;
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return 0;
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}
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default:
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break; //Forbidden ?
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}
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}
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pqdiff = get_bits(gb, 3);
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if (pqdiff == 7)
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v->altpq = get_bits(gb, 5);
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else
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v->altpq = v->pq + pqdiff + 1;
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return 0;
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}
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static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb);
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/**
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* Decode Simple/Main Profiles sequence header
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* @see Figure 7-8, p16-17
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* @param avctx Codec context
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* @param gb GetBit context initialized from Codec context extra_data
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* @return Status
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*/
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int ff_vc1_decode_sequence_header(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
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{
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av_log(avctx, AV_LOG_DEBUG, "Header: %0X\n", show_bits_long(gb, 32));
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v->profile = get_bits(gb, 2);
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if (v->profile == PROFILE_COMPLEX) {
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av_log(avctx, AV_LOG_WARNING, "WMV3 Complex Profile is not fully supported\n");
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}
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if (v->profile == PROFILE_ADVANCED) {
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v->zz_8x4 = ff_vc1_adv_progressive_8x4_zz;
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v->zz_4x8 = ff_vc1_adv_progressive_4x8_zz;
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return decode_sequence_header_adv(v, gb);
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} else {
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v->chromaformat = 1;
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v->zz_8x4 = ff_wmv2_scantableA;
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v->zz_4x8 = ff_wmv2_scantableB;
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v->res_y411 = get_bits1(gb);
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v->res_sprite = get_bits1(gb);
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if (v->res_y411) {
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av_log(avctx, AV_LOG_ERROR,
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"Old interlaced mode is not supported\n");
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return -1;
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}
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}
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// (fps-2)/4 (->30)
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v->frmrtq_postproc = get_bits(gb, 3); //common
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// (bitrate-32kbps)/64kbps
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v->bitrtq_postproc = get_bits(gb, 5); //common
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v->s.loop_filter = get_bits1(gb); //common
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if (v->s.loop_filter == 1 && v->profile == PROFILE_SIMPLE) {
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av_log(avctx, AV_LOG_ERROR,
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"LOOPFILTER shall not be enabled in Simple Profile\n");
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}
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if (v->s.avctx->skip_loop_filter >= AVDISCARD_ALL)
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v->s.loop_filter = 0;
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v->res_x8 = get_bits1(gb); //reserved
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v->multires = get_bits1(gb);
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v->res_fasttx = get_bits1(gb);
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v->fastuvmc = get_bits1(gb); //common
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if (!v->profile && !v->fastuvmc) {
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av_log(avctx, AV_LOG_ERROR,
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"FASTUVMC unavailable in Simple Profile\n");
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return -1;
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}
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v->extended_mv = get_bits1(gb); //common
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if (!v->profile && v->extended_mv) {
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av_log(avctx, AV_LOG_ERROR,
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"Extended MVs unavailable in Simple Profile\n");
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return -1;
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}
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v->dquant = get_bits(gb, 2); //common
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v->vstransform = get_bits1(gb); //common
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v->res_transtab = get_bits1(gb);
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if (v->res_transtab) {
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av_log(avctx, AV_LOG_ERROR,
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"1 for reserved RES_TRANSTAB is forbidden\n");
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return -1;
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}
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v->overlap = get_bits1(gb); //common
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v->resync_marker = get_bits1(gb);
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v->rangered = get_bits1(gb);
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if (v->rangered && v->profile == PROFILE_SIMPLE) {
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av_log(avctx, AV_LOG_INFO,
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"RANGERED should be set to 0 in Simple Profile\n");
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}
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v->s.max_b_frames = avctx->max_b_frames = get_bits(gb, 3); //common
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v->quantizer_mode = get_bits(gb, 2); //common
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v->finterpflag = get_bits1(gb); //common
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if (v->res_sprite) {
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int w = get_bits(gb, 11);
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int h = get_bits(gb, 11);
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int ret = ff_set_dimensions(v->s.avctx, w, h);
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if (ret < 0) {
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av_log(avctx, AV_LOG_ERROR, "Failed to set dimensions %d %d\n", w, h);
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return ret;
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}
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skip_bits(gb, 5); //frame rate
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v->res_x8 = get_bits1(gb);
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if (get_bits1(gb)) { // something to do with DC VLC selection
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av_log(avctx, AV_LOG_ERROR, "Unsupported sprite feature\n");
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return -1;
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}
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skip_bits(gb, 3); //slice code
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v->res_rtm_flag = 0;
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} else {
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v->res_rtm_flag = get_bits1(gb); //reserved
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}
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//TODO: figure out what they mean (always 0x402F)
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if (!v->res_fasttx)
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skip_bits(gb, 16);
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av_log(avctx, AV_LOG_DEBUG,
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"Profile %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
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"LoopFilter=%i, MultiRes=%i, FastUVMC=%i, Extended MV=%i\n"
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"Rangered=%i, VSTransform=%i, Overlap=%i, SyncMarker=%i\n"
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"DQuant=%i, Quantizer mode=%i, Max B-frames=%i\n",
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v->profile, v->frmrtq_postproc, v->bitrtq_postproc,
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v->s.loop_filter, v->multires, v->fastuvmc, v->extended_mv,
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v->rangered, v->vstransform, v->overlap, v->resync_marker,
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v->dquant, v->quantizer_mode, avctx->max_b_frames);
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return 0;
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}
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static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb)
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{
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v->res_rtm_flag = 1;
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v->level = get_bits(gb, 3);
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if (v->level >= 5) {
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av_log(v->s.avctx, AV_LOG_ERROR, "Reserved LEVEL %i\n",v->level);
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}
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v->chromaformat = get_bits(gb, 2);
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if (v->chromaformat != 1) {
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av_log(v->s.avctx, AV_LOG_ERROR,
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"Only 4:2:0 chroma format supported\n");
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return -1;
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}
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// (fps-2)/4 (->30)
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v->frmrtq_postproc = get_bits(gb, 3); //common
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// (bitrate-32kbps)/64kbps
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v->bitrtq_postproc = get_bits(gb, 5); //common
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v->postprocflag = get_bits1(gb); //common
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v->max_coded_width = (get_bits(gb, 12) + 1) << 1;
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v->max_coded_height = (get_bits(gb, 12) + 1) << 1;
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v->broadcast = get_bits1(gb);
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v->interlace = get_bits1(gb);
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v->tfcntrflag = get_bits1(gb);
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v->finterpflag = get_bits1(gb);
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skip_bits1(gb); // reserved
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av_log(v->s.avctx, AV_LOG_DEBUG,
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"Advanced Profile level %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
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"LoopFilter=%i, ChromaFormat=%i, Pulldown=%i, Interlace: %i\n"
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"TFCTRflag=%i, FINTERPflag=%i\n",
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v->level, v->frmrtq_postproc, v->bitrtq_postproc,
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v->s.loop_filter, v->chromaformat, v->broadcast, v->interlace,
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v->tfcntrflag, v->finterpflag);
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#if FF_API_TICKS_PER_FRAME
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FF_DISABLE_DEPRECATION_WARNINGS
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if (v->broadcast) { // Pulldown may be present
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v->s.avctx->ticks_per_frame = 2;
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}
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FF_ENABLE_DEPRECATION_WARNINGS
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#endif
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v->psf = get_bits1(gb);
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if (v->psf) { //PsF, 6.1.13
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av_log(v->s.avctx, AV_LOG_ERROR, "Progressive Segmented Frame mode: not supported (yet)\n");
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return -1;
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}
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v->s.max_b_frames = v->s.avctx->max_b_frames = 7;
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if (get_bits1(gb)) { //Display Info - decoding is not affected by it
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int w, h, ar = 0;
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av_log(v->s.avctx, AV_LOG_DEBUG, "Display extended info:\n");
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w = get_bits(gb, 14) + 1;
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h = get_bits(gb, 14) + 1;
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av_log(v->s.avctx, AV_LOG_DEBUG, "Display dimensions: %ix%i\n", w, h);
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if (get_bits1(gb))
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ar = get_bits(gb, 4);
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if (ar && ar < 14) {
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v->s.avctx->sample_aspect_ratio = ff_vc1_pixel_aspect[ar];
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} else if (ar == 15) {
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w = get_bits(gb, 8) + 1;
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h = get_bits(gb, 8) + 1;
|
|
v->s.avctx->sample_aspect_ratio = (AVRational){w, h};
|
|
} else {
|
|
if (v->s.avctx->width > v->max_coded_width ||
|
|
v->s.avctx->height > v->max_coded_height) {
|
|
avpriv_request_sample(v->s.avctx, "Huge resolution");
|
|
} else
|
|
av_reduce(&v->s.avctx->sample_aspect_ratio.num,
|
|
&v->s.avctx->sample_aspect_ratio.den,
|
|
v->s.avctx->height * w,
|
|
v->s.avctx->width * h,
|
|
1 << 30);
|
|
}
|
|
ff_set_sar(v->s.avctx, v->s.avctx->sample_aspect_ratio);
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "Aspect: %i:%i\n",
|
|
v->s.avctx->sample_aspect_ratio.num,
|
|
v->s.avctx->sample_aspect_ratio.den);
|
|
|
|
if (get_bits1(gb)) { //framerate stuff
|
|
if (get_bits1(gb)) {
|
|
v->s.avctx->framerate.den = 32;
|
|
v->s.avctx->framerate.num = get_bits(gb, 16) + 1;
|
|
} else {
|
|
int nr, dr;
|
|
nr = get_bits(gb, 8);
|
|
dr = get_bits(gb, 4);
|
|
if (nr > 0 && nr < 8 && dr > 0 && dr < 3) {
|
|
v->s.avctx->framerate.den = ff_vc1_fps_dr[dr - 1];
|
|
v->s.avctx->framerate.num = ff_vc1_fps_nr[nr - 1] * 1000;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (get_bits1(gb)) {
|
|
v->color_prim = get_bits(gb, 8);
|
|
v->transfer_char = get_bits(gb, 8);
|
|
v->matrix_coef = get_bits(gb, 8);
|
|
}
|
|
}
|
|
|
|
v->hrd_param_flag = get_bits1(gb);
|
|
if (v->hrd_param_flag) {
|
|
int i;
|
|
v->hrd_num_leaky_buckets = get_bits(gb, 5);
|
|
skip_bits(gb, 4); //bitrate exponent
|
|
skip_bits(gb, 4); //buffer size exponent
|
|
for (i = 0; i < v->hrd_num_leaky_buckets; i++) {
|
|
skip_bits(gb, 16); //hrd_rate[n]
|
|
skip_bits(gb, 16); //hrd_buffer[n]
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int ff_vc1_decode_entry_point(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
|
|
{
|
|
int i;
|
|
int w,h;
|
|
int ret;
|
|
|
|
av_log(avctx, AV_LOG_DEBUG, "Entry point: %08X\n", show_bits_long(gb, 32));
|
|
v->broken_link = get_bits1(gb);
|
|
v->closed_entry = get_bits1(gb);
|
|
v->panscanflag = get_bits1(gb);
|
|
v->refdist_flag = get_bits1(gb);
|
|
v->s.loop_filter = get_bits1(gb);
|
|
if (v->s.avctx->skip_loop_filter >= AVDISCARD_ALL)
|
|
v->s.loop_filter = 0;
|
|
v->fastuvmc = get_bits1(gb);
|
|
v->extended_mv = get_bits1(gb);
|
|
v->dquant = get_bits(gb, 2);
|
|
v->vstransform = get_bits1(gb);
|
|
v->overlap = get_bits1(gb);
|
|
v->quantizer_mode = get_bits(gb, 2);
|
|
|
|
if (v->hrd_param_flag) {
|
|
for (i = 0; i < v->hrd_num_leaky_buckets; i++) {
|
|
skip_bits(gb, 8); //hrd_full[n]
|
|
}
|
|
}
|
|
|
|
if(get_bits1(gb)){
|
|
w = (get_bits(gb, 12)+1)<<1;
|
|
h = (get_bits(gb, 12)+1)<<1;
|
|
} else {
|
|
w = v->max_coded_width;
|
|
h = v->max_coded_height;
|
|
}
|
|
if ((ret = ff_set_dimensions(avctx, w, h)) < 0) {
|
|
av_log(avctx, AV_LOG_ERROR, "Failed to set dimensions %d %d\n", w, h);
|
|
return ret;
|
|
}
|
|
|
|
if (v->extended_mv)
|
|
v->extended_dmv = get_bits1(gb);
|
|
if ((v->range_mapy_flag = get_bits1(gb))) {
|
|
av_log(avctx, AV_LOG_ERROR, "Luma scaling is not supported, expect wrong picture\n");
|
|
v->range_mapy = get_bits(gb, 3);
|
|
}
|
|
if ((v->range_mapuv_flag = get_bits1(gb))) {
|
|
av_log(avctx, AV_LOG_ERROR, "Chroma scaling is not supported, expect wrong picture\n");
|
|
v->range_mapuv = get_bits(gb, 3);
|
|
}
|
|
|
|
av_log(avctx, AV_LOG_DEBUG, "Entry point info:\n"
|
|
"BrokenLink=%i, ClosedEntry=%i, PanscanFlag=%i\n"
|
|
"RefDist=%i, Postproc=%i, FastUVMC=%i, ExtMV=%i\n"
|
|
"DQuant=%i, VSTransform=%i, Overlap=%i, Qmode=%i\n",
|
|
v->broken_link, v->closed_entry, v->panscanflag, v->refdist_flag, v->s.loop_filter,
|
|
v->fastuvmc, v->extended_mv, v->dquant, v->vstransform, v->overlap, v->quantizer_mode);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* fill lookup tables for intensity compensation */
|
|
#define INIT_LUT(lumscale, lumshift, luty, lutuv, chain) do { \
|
|
int scale, shift, i; \
|
|
if (!lumscale) { \
|
|
scale = -64; \
|
|
shift = (255 - lumshift * 2) * 64; \
|
|
if (lumshift > 31) \
|
|
shift += 128 << 6; \
|
|
} else { \
|
|
scale = lumscale + 32; \
|
|
if (lumshift > 31) \
|
|
shift = (lumshift - 64) * 64; \
|
|
else \
|
|
shift = lumshift << 6; \
|
|
} \
|
|
for (i = 0; i < 256; i++) { \
|
|
int iy = chain ? luty[i] : i; \
|
|
int iu = chain ? lutuv[i] : i; \
|
|
luty[i] = av_clip_uint8((scale * iy + shift + 32) >> 6); \
|
|
lutuv[i] = av_clip_uint8((scale * (iu - 128) + 128*64 + 32) >> 6);\
|
|
} \
|
|
} while(0)
|
|
|
|
static void rotate_luts(VC1Context *v)
|
|
{
|
|
#define ROTATE(DEF, L, N, C, A) do { \
|
|
if (v->s.pict_type == AV_PICTURE_TYPE_BI || v->s.pict_type == AV_PICTURE_TYPE_B) { \
|
|
C = A; \
|
|
} else { \
|
|
DEF; \
|
|
memcpy(&tmp, L , sizeof(tmp)); \
|
|
memcpy(L , N , sizeof(tmp)); \
|
|
memcpy(N , &tmp, sizeof(tmp)); \
|
|
C = N; \
|
|
} \
|
|
} while(0)
|
|
|
|
ROTATE(int tmp, &v->last_use_ic, &v->next_use_ic, v->curr_use_ic, &v->aux_use_ic);
|
|
ROTATE(uint8_t tmp[2][256], v->last_luty, v->next_luty, v->curr_luty, v->aux_luty);
|
|
ROTATE(uint8_t tmp[2][256], v->last_lutuv, v->next_lutuv, v->curr_lutuv, v->aux_lutuv);
|
|
|
|
INIT_LUT(32, 0, v->curr_luty[0], v->curr_lutuv[0], 0);
|
|
INIT_LUT(32, 0, v->curr_luty[1], v->curr_lutuv[1], 0);
|
|
*v->curr_use_ic = 0;
|
|
}
|
|
|
|
static int read_bfraction(VC1Context *v, GetBitContext* gb) {
|
|
int bfraction_lut_index = get_bits(gb, 3);
|
|
|
|
if (bfraction_lut_index == 7)
|
|
bfraction_lut_index = 7 + get_bits(gb, 4);
|
|
|
|
if (bfraction_lut_index == 21) {
|
|
av_log(v->s.avctx, AV_LOG_ERROR, "bfraction invalid\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
v->bfraction_lut_index = bfraction_lut_index;
|
|
v->bfraction = ff_vc1_bfraction_lut[v->bfraction_lut_index];
|
|
return 0;
|
|
}
|
|
|
|
int ff_vc1_parse_frame_header(VC1Context *v, GetBitContext* gb)
|
|
{
|
|
int pqindex, lowquant, status;
|
|
|
|
v->field_mode = 0;
|
|
v->fcm = PROGRESSIVE;
|
|
if (v->finterpflag)
|
|
v->interpfrm = get_bits1(gb);
|
|
if (v->s.avctx->codec_id == AV_CODEC_ID_MSS2)
|
|
v->respic =
|
|
v->rangered =
|
|
v->multires = get_bits(gb, 2) == 1;
|
|
else
|
|
skip_bits(gb, 2); //framecnt unused
|
|
v->rangeredfrm = 0;
|
|
if (v->rangered)
|
|
v->rangeredfrm = get_bits1(gb);
|
|
if (get_bits1(gb)) {
|
|
v->s.pict_type = AV_PICTURE_TYPE_P;
|
|
} else {
|
|
if (v->s.avctx->max_b_frames && !get_bits1(gb)) {
|
|
v->s.pict_type = AV_PICTURE_TYPE_B;
|
|
} else
|
|
v->s.pict_type = AV_PICTURE_TYPE_I;
|
|
}
|
|
|
|
v->bi_type = 0;
|
|
if (v->s.pict_type == AV_PICTURE_TYPE_B) {
|
|
if (read_bfraction(v, gb) < 0)
|
|
return AVERROR_INVALIDDATA;
|
|
if (v->bfraction == 0) {
|
|
v->s.pict_type = AV_PICTURE_TYPE_BI;
|
|
}
|
|
}
|
|
if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)
|
|
skip_bits(gb, 7); // skip buffer fullness
|
|
|
|
if (v->parse_only)
|
|
return 0;
|
|
|
|
/* calculate RND */
|
|
if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)
|
|
v->rnd = 1;
|
|
if (v->s.pict_type == AV_PICTURE_TYPE_P)
|
|
v->rnd ^= 1;
|
|
|
|
if (get_bits_left(gb) < 5)
|
|
return AVERROR_INVALIDDATA;
|
|
/* Quantizer stuff */
|
|
pqindex = get_bits(gb, 5);
|
|
if (!pqindex)
|
|
return -1;
|
|
if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
|
|
v->pq = ff_vc1_pquant_table[0][pqindex];
|
|
else
|
|
v->pq = ff_vc1_pquant_table[1][pqindex];
|
|
v->pqindex = pqindex;
|
|
if (pqindex < 9)
|
|
v->halfpq = get_bits1(gb);
|
|
else
|
|
v->halfpq = 0;
|
|
switch (v->quantizer_mode) {
|
|
case QUANT_FRAME_IMPLICIT:
|
|
v->pquantizer = pqindex < 9;
|
|
break;
|
|
case QUANT_NON_UNIFORM:
|
|
v->pquantizer = 0;
|
|
break;
|
|
case QUANT_FRAME_EXPLICIT:
|
|
v->pquantizer = get_bits1(gb);
|
|
break;
|
|
default:
|
|
v->pquantizer = 1;
|
|
break;
|
|
}
|
|
v->dquantfrm = 0;
|
|
if (v->extended_mv == 1)
|
|
v->mvrange = get_unary(gb, 0, 3);
|
|
v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
|
|
v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
|
|
v->range_x = 1 << (v->k_x - 1);
|
|
v->range_y = 1 << (v->k_y - 1);
|
|
if (v->multires && v->s.pict_type != AV_PICTURE_TYPE_B)
|
|
v->respic = get_bits(gb, 2);
|
|
|
|
if (v->res_x8 && (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)) {
|
|
v->x8_type = get_bits1(gb);
|
|
} else
|
|
v->x8_type = 0;
|
|
ff_dlog(v->s.avctx, "%c Frame: QP=[%i]%i (+%i/2) %i\n",
|
|
(v->s.pict_type == AV_PICTURE_TYPE_P) ? 'P' : ((v->s.pict_type == AV_PICTURE_TYPE_I) ? 'I' : 'B'),
|
|
pqindex, v->pq, v->halfpq, v->rangeredfrm);
|
|
|
|
if (v->first_pic_header_flag)
|
|
rotate_luts(v);
|
|
|
|
switch (v->s.pict_type) {
|
|
case AV_PICTURE_TYPE_P:
|
|
v->tt_index = (v->pq > 4) + (v->pq > 12);
|
|
|
|
lowquant = (v->pq > 12) ? 0 : 1;
|
|
v->mv_mode = ff_vc1_mv_pmode_table[lowquant][get_unary(gb, 1, 4)];
|
|
if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {
|
|
v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][get_unary(gb, 1, 3)];
|
|
v->lumscale = get_bits(gb, 6);
|
|
v->lumshift = get_bits(gb, 6);
|
|
v->last_use_ic = 1;
|
|
/* fill lookup tables for intensity compensation */
|
|
INIT_LUT(v->lumscale, v->lumshift, v->last_luty[0], v->last_lutuv[0], 1);
|
|
INIT_LUT(v->lumscale, v->lumshift, v->last_luty[1], v->last_lutuv[1], 1);
|
|
}
|
|
v->qs_last = v->s.quarter_sample;
|
|
if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {
|
|
v->s.quarter_sample = (v->mv_mode2 != MV_PMODE_1MV_HPEL &&
|
|
v->mv_mode2 != MV_PMODE_1MV_HPEL_BILIN);
|
|
v->s.mspel = (v->mv_mode2 != MV_PMODE_1MV_HPEL_BILIN);
|
|
} else {
|
|
v->s.quarter_sample = (v->mv_mode != MV_PMODE_1MV_HPEL &&
|
|
v->mv_mode != MV_PMODE_1MV_HPEL_BILIN);
|
|
v->s.mspel = (v->mv_mode != MV_PMODE_1MV_HPEL_BILIN);
|
|
}
|
|
|
|
if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
|
|
v->mv_mode2 == MV_PMODE_MIXED_MV) ||
|
|
v->mv_mode == MV_PMODE_MIXED_MV) {
|
|
status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
|
|
if (status < 0)
|
|
return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
} else {
|
|
v->mv_type_is_raw = 0;
|
|
memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
|
|
}
|
|
status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
|
|
if (status < 0)
|
|
return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
|
|
if (get_bits_left(gb) < 4)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
/* Hopefully this is correct for P-frames */
|
|
v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
|
|
v->cbptab = get_bits(gb, 2);
|
|
v->cbpcy_vlc = ff_vc1_cbpcy_p_vlc[v->cbptab];
|
|
|
|
if (v->dquant) {
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
|
|
vop_dquant_decoding(v);
|
|
}
|
|
|
|
if (v->vstransform) {
|
|
v->ttmbf = get_bits1(gb);
|
|
if (v->ttmbf) {
|
|
v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
|
|
} else
|
|
v->ttfrm = 0; //FIXME Is that so ?
|
|
} else {
|
|
v->ttmbf = 1;
|
|
v->ttfrm = TT_8X8;
|
|
}
|
|
break;
|
|
case AV_PICTURE_TYPE_B:
|
|
v->tt_index = (v->pq > 4) + (v->pq > 12);
|
|
|
|
v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
|
|
v->qs_last = v->s.quarter_sample;
|
|
v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
|
|
v->s.mspel = v->s.quarter_sample;
|
|
|
|
status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
|
|
if (status < 0)
|
|
return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
|
|
if (status < 0)
|
|
return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
|
|
v->s.mv_table_index = get_bits(gb, 2);
|
|
v->cbptab = get_bits(gb, 2);
|
|
v->cbpcy_vlc = ff_vc1_cbpcy_p_vlc[v->cbptab];
|
|
|
|
if (v->dquant) {
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
|
|
vop_dquant_decoding(v);
|
|
}
|
|
|
|
if (v->vstransform) {
|
|
v->ttmbf = get_bits1(gb);
|
|
if (v->ttmbf) {
|
|
v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
|
|
} else
|
|
v->ttfrm = 0;
|
|
} else {
|
|
v->ttmbf = 1;
|
|
v->ttfrm = TT_8X8;
|
|
}
|
|
break;
|
|
}
|
|
|
|
if (!v->x8_type) {
|
|
/* AC Syntax */
|
|
v->c_ac_table_index = decode012(gb);
|
|
if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI) {
|
|
v->y_ac_table_index = decode012(gb);
|
|
}
|
|
/* DC Syntax */
|
|
v->s.dc_table_index = get_bits1(gb);
|
|
}
|
|
|
|
if (v->s.pict_type == AV_PICTURE_TYPE_BI) {
|
|
v->s.pict_type = AV_PICTURE_TYPE_B;
|
|
v->bi_type = 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int ff_vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
|
|
{
|
|
int pqindex, lowquant;
|
|
int status;
|
|
int field_mode, fcm;
|
|
|
|
v->numref = 0;
|
|
v->p_frame_skipped = 0;
|
|
if (v->second_field) {
|
|
if (v->fcm != ILACE_FIELD || v->field_mode!=1)
|
|
return -1;
|
|
if (v->fptype & 4)
|
|
v->s.pict_type = (v->fptype & 1) ? AV_PICTURE_TYPE_BI : AV_PICTURE_TYPE_B;
|
|
else
|
|
v->s.pict_type = (v->fptype & 1) ? AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I;
|
|
v->s.current_picture_ptr->f->pict_type = v->s.pict_type;
|
|
if (!v->pic_header_flag)
|
|
goto parse_common_info;
|
|
}
|
|
|
|
field_mode = 0;
|
|
if (v->interlace) {
|
|
fcm = decode012(gb);
|
|
if (fcm) {
|
|
if (fcm == ILACE_FIELD)
|
|
field_mode = 1;
|
|
}
|
|
} else {
|
|
fcm = PROGRESSIVE;
|
|
}
|
|
if (!v->first_pic_header_flag && v->field_mode != field_mode)
|
|
return AVERROR_INVALIDDATA;
|
|
v->field_mode = field_mode;
|
|
v->fcm = fcm;
|
|
|
|
av_assert0( v->s.mb_height == v->s.height + 15 >> 4
|
|
|| v->s.mb_height == FFALIGN(v->s.height + 15 >> 4, 2));
|
|
if (v->field_mode) {
|
|
v->s.mb_height = FFALIGN(v->s.height + 15 >> 4, 2);
|
|
v->fptype = get_bits(gb, 3);
|
|
if (v->fptype & 4) // B-picture
|
|
v->s.pict_type = (v->fptype & 2) ? AV_PICTURE_TYPE_BI : AV_PICTURE_TYPE_B;
|
|
else
|
|
v->s.pict_type = (v->fptype & 2) ? AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I;
|
|
} else {
|
|
v->s.mb_height = v->s.height + 15 >> 4;
|
|
switch (get_unary(gb, 0, 4)) {
|
|
case 0:
|
|
v->s.pict_type = AV_PICTURE_TYPE_P;
|
|
break;
|
|
case 1:
|
|
v->s.pict_type = AV_PICTURE_TYPE_B;
|
|
break;
|
|
case 2:
|
|
v->s.pict_type = AV_PICTURE_TYPE_I;
|
|
break;
|
|
case 3:
|
|
v->s.pict_type = AV_PICTURE_TYPE_BI;
|
|
break;
|
|
case 4:
|
|
v->s.pict_type = AV_PICTURE_TYPE_P; // skipped pic
|
|
v->p_frame_skipped = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (v->tfcntrflag)
|
|
skip_bits(gb, 8);
|
|
if (v->broadcast) {
|
|
if (!v->interlace || v->psf) {
|
|
v->rptfrm = get_bits(gb, 2);
|
|
} else {
|
|
v->tff = get_bits1(gb);
|
|
v->rff = get_bits1(gb);
|
|
}
|
|
} else {
|
|
v->tff = 1;
|
|
}
|
|
if (v->panscanflag) {
|
|
avpriv_report_missing_feature(v->s.avctx, "Pan-scan");
|
|
//...
|
|
}
|
|
if (v->p_frame_skipped) {
|
|
return 0;
|
|
}
|
|
v->rnd = get_bits1(gb);
|
|
if (v->interlace)
|
|
v->uvsamp = get_bits1(gb);
|
|
if (v->field_mode) {
|
|
if (!v->refdist_flag)
|
|
v->refdist = 0;
|
|
else if ((v->s.pict_type != AV_PICTURE_TYPE_B) && (v->s.pict_type != AV_PICTURE_TYPE_BI)) {
|
|
v->refdist = get_bits(gb, 2);
|
|
if (v->refdist == 3)
|
|
v->refdist += get_unary(gb, 0, 14);
|
|
if (v->refdist > 16)
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
if ((v->s.pict_type == AV_PICTURE_TYPE_B) || (v->s.pict_type == AV_PICTURE_TYPE_BI)) {
|
|
if (read_bfraction(v, gb) < 0)
|
|
return AVERROR_INVALIDDATA;
|
|
v->frfd = (v->bfraction * v->refdist) >> 8;
|
|
v->brfd = v->refdist - v->frfd - 1;
|
|
if (v->brfd < 0)
|
|
v->brfd = 0;
|
|
}
|
|
goto parse_common_info;
|
|
}
|
|
if (v->fcm == PROGRESSIVE) {
|
|
if (v->finterpflag)
|
|
v->interpfrm = get_bits1(gb);
|
|
if (v->s.pict_type == AV_PICTURE_TYPE_B) {
|
|
if (read_bfraction(v, gb) < 0)
|
|
return AVERROR_INVALIDDATA;
|
|
if (v->bfraction == 0) {
|
|
v->s.pict_type = AV_PICTURE_TYPE_BI; /* XXX: should not happen here */
|
|
}
|
|
}
|
|
}
|
|
|
|
parse_common_info:
|
|
if (v->field_mode)
|
|
v->cur_field_type = !(v->tff ^ v->second_field);
|
|
pqindex = get_bits(gb, 5);
|
|
if (!pqindex)
|
|
return -1;
|
|
if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
|
|
v->pq = ff_vc1_pquant_table[0][pqindex];
|
|
else
|
|
v->pq = ff_vc1_pquant_table[1][pqindex];
|
|
v->pqindex = pqindex;
|
|
if (pqindex < 9)
|
|
v->halfpq = get_bits1(gb);
|
|
else
|
|
v->halfpq = 0;
|
|
switch (v->quantizer_mode) {
|
|
case QUANT_FRAME_IMPLICIT:
|
|
v->pquantizer = pqindex < 9;
|
|
break;
|
|
case QUANT_NON_UNIFORM:
|
|
v->pquantizer = 0;
|
|
break;
|
|
case QUANT_FRAME_EXPLICIT:
|
|
v->pquantizer = get_bits1(gb);
|
|
break;
|
|
default:
|
|
v->pquantizer = 1;
|
|
break;
|
|
}
|
|
v->dquantfrm = 0;
|
|
if (v->postprocflag)
|
|
v->postproc = get_bits(gb, 2);
|
|
|
|
if (v->parse_only)
|
|
return 0;
|
|
|
|
if (v->first_pic_header_flag)
|
|
rotate_luts(v);
|
|
|
|
switch (v->s.pict_type) {
|
|
case AV_PICTURE_TYPE_I:
|
|
case AV_PICTURE_TYPE_BI:
|
|
if (v->fcm == ILACE_FRAME) { //interlace frame picture
|
|
status = bitplane_decoding(v->fieldtx_plane, &v->fieldtx_is_raw, v);
|
|
if (status < 0)
|
|
return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "FIELDTX plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
} else
|
|
v->fieldtx_is_raw = 0;
|
|
status = bitplane_decoding(v->acpred_plane, &v->acpred_is_raw, v);
|
|
if (status < 0)
|
|
return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "ACPRED plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
v->condover = CONDOVER_NONE;
|
|
if (v->overlap && v->pq <= 8) {
|
|
v->condover = decode012(gb);
|
|
if (v->condover == CONDOVER_SELECT) {
|
|
status = bitplane_decoding(v->over_flags_plane, &v->overflg_is_raw, v);
|
|
if (status < 0)
|
|
return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "CONDOVER plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
}
|
|
}
|
|
break;
|
|
case AV_PICTURE_TYPE_P:
|
|
if (v->field_mode) {
|
|
v->numref = get_bits1(gb);
|
|
if (!v->numref) {
|
|
v->reffield = get_bits1(gb);
|
|
v->ref_field_type[0] = v->reffield ^ !v->cur_field_type;
|
|
}
|
|
}
|
|
if (v->extended_mv)
|
|
v->mvrange = get_unary(gb, 0, 3);
|
|
else
|
|
v->mvrange = 0;
|
|
if (v->interlace) {
|
|
if (v->extended_dmv)
|
|
v->dmvrange = get_unary(gb, 0, 3);
|
|
else
|
|
v->dmvrange = 0;
|
|
if (v->fcm == ILACE_FRAME) { // interlaced frame picture
|
|
v->fourmvswitch = get_bits1(gb);
|
|
v->intcomp = get_bits1(gb);
|
|
if (v->intcomp) {
|
|
v->lumscale = get_bits(gb, 6);
|
|
v->lumshift = get_bits(gb, 6);
|
|
INIT_LUT(v->lumscale, v->lumshift, v->last_luty[0], v->last_lutuv[0], 1);
|
|
INIT_LUT(v->lumscale, v->lumshift, v->last_luty[1], v->last_lutuv[1], 1);
|
|
v->last_use_ic = 1;
|
|
}
|
|
status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
|
|
if (status < 0)
|
|
return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "SKIPMB plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
v->mbmodetab = get_bits(gb, 2);
|
|
if (v->fourmvswitch)
|
|
v->mbmode_vlc = ff_vc1_intfr_4mv_mbmode_vlc[v->mbmodetab];
|
|
else
|
|
v->mbmode_vlc = ff_vc1_intfr_non4mv_mbmode_vlc[v->mbmodetab];
|
|
v->imvtab = get_bits(gb, 2);
|
|
v->imv_vlc = ff_vc1_1ref_mvdata_vlc[v->imvtab];
|
|
// interlaced p-picture cbpcy range is [1, 63]
|
|
v->icbptab = get_bits(gb, 3);
|
|
v->cbpcy_vlc = ff_vc1_icbpcy_vlc[v->icbptab];
|
|
v->twomvbptab = get_bits(gb, 2);
|
|
v->twomvbp_vlc = ff_vc1_2mv_block_pattern_vlc[v->twomvbptab];
|
|
if (v->fourmvswitch) {
|
|
v->fourmvbptab = get_bits(gb, 2);
|
|
v->fourmvbp_vlc = ff_vc1_4mv_block_pattern_vlc[v->fourmvbptab];
|
|
}
|
|
}
|
|
}
|
|
v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
|
|
v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
|
|
v->range_x = 1 << (v->k_x - 1);
|
|
v->range_y = 1 << (v->k_y - 1);
|
|
|
|
v->tt_index = (v->pq > 4) + (v->pq > 12);
|
|
if (v->fcm != ILACE_FRAME) {
|
|
int mvmode;
|
|
mvmode = get_unary(gb, 1, 4);
|
|
lowquant = (v->pq > 12) ? 0 : 1;
|
|
v->mv_mode = ff_vc1_mv_pmode_table[lowquant][mvmode];
|
|
if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {
|
|
int mvmode2;
|
|
mvmode2 = get_unary(gb, 1, 3);
|
|
v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][mvmode2];
|
|
if (v->field_mode) {
|
|
v->intcompfield = decode210(gb) ^ 3;
|
|
} else
|
|
v->intcompfield = 3;
|
|
|
|
v->lumscale2 = v->lumscale = 32;
|
|
v->lumshift2 = v->lumshift = 0;
|
|
if (v->intcompfield & 1) {
|
|
v->lumscale = get_bits(gb, 6);
|
|
v->lumshift = get_bits(gb, 6);
|
|
}
|
|
if ((v->intcompfield & 2) && v->field_mode) {
|
|
v->lumscale2 = get_bits(gb, 6);
|
|
v->lumshift2 = get_bits(gb, 6);
|
|
} else if(!v->field_mode) {
|
|
v->lumscale2 = v->lumscale;
|
|
v->lumshift2 = v->lumshift;
|
|
}
|
|
if (v->field_mode && v->second_field) {
|
|
if (v->cur_field_type) {
|
|
INIT_LUT(v->lumscale , v->lumshift , v->curr_luty[v->cur_field_type^1], v->curr_lutuv[v->cur_field_type^1], 0);
|
|
INIT_LUT(v->lumscale2, v->lumshift2, v->last_luty[v->cur_field_type ], v->last_lutuv[v->cur_field_type ], 1);
|
|
} else {
|
|
INIT_LUT(v->lumscale2, v->lumshift2, v->curr_luty[v->cur_field_type^1], v->curr_lutuv[v->cur_field_type^1], 0);
|
|
INIT_LUT(v->lumscale , v->lumshift , v->last_luty[v->cur_field_type ], v->last_lutuv[v->cur_field_type ], 1);
|
|
}
|
|
v->next_use_ic = *v->curr_use_ic = 1;
|
|
} else {
|
|
INIT_LUT(v->lumscale , v->lumshift , v->last_luty[0], v->last_lutuv[0], 1);
|
|
INIT_LUT(v->lumscale2, v->lumshift2, v->last_luty[1], v->last_lutuv[1], 1);
|
|
}
|
|
v->last_use_ic = 1;
|
|
}
|
|
v->qs_last = v->s.quarter_sample;
|
|
if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {
|
|
v->s.quarter_sample = (v->mv_mode2 != MV_PMODE_1MV_HPEL &&
|
|
v->mv_mode2 != MV_PMODE_1MV_HPEL_BILIN);
|
|
v->s.mspel = (v->mv_mode2 != MV_PMODE_1MV_HPEL_BILIN);
|
|
} else {
|
|
v->s.quarter_sample = (v->mv_mode != MV_PMODE_1MV_HPEL &&
|
|
v->mv_mode != MV_PMODE_1MV_HPEL_BILIN);
|
|
v->s.mspel = (v->mv_mode != MV_PMODE_1MV_HPEL_BILIN);
|
|
}
|
|
}
|
|
if (v->fcm == PROGRESSIVE) { // progressive
|
|
if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
|
|
v->mv_mode2 == MV_PMODE_MIXED_MV)
|
|
|| v->mv_mode == MV_PMODE_MIXED_MV) {
|
|
status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
|
|
if (status < 0)
|
|
return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
} else {
|
|
v->mv_type_is_raw = 0;
|
|
memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
|
|
}
|
|
status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
|
|
if (status < 0)
|
|
return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
|
|
/* Hopefully this is correct for P-frames */
|
|
v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
|
|
v->cbptab = get_bits(gb, 2);
|
|
v->cbpcy_vlc = ff_vc1_cbpcy_p_vlc[v->cbptab];
|
|
} else if (v->fcm == ILACE_FRAME) { // frame interlaced
|
|
v->qs_last = v->s.quarter_sample;
|
|
v->s.quarter_sample = 1;
|
|
v->s.mspel = 1;
|
|
} else { // field interlaced
|
|
v->mbmodetab = get_bits(gb, 3);
|
|
v->imvtab = get_bits(gb, 2 + v->numref);
|
|
if (!v->numref)
|
|
v->imv_vlc = ff_vc1_1ref_mvdata_vlc[v->imvtab];
|
|
else
|
|
v->imv_vlc = ff_vc1_2ref_mvdata_vlc[v->imvtab];
|
|
v->icbptab = get_bits(gb, 3);
|
|
v->cbpcy_vlc = ff_vc1_icbpcy_vlc[v->icbptab];
|
|
if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
|
|
v->mv_mode2 == MV_PMODE_MIXED_MV) || v->mv_mode == MV_PMODE_MIXED_MV) {
|
|
v->fourmvbptab = get_bits(gb, 2);
|
|
v->fourmvbp_vlc = ff_vc1_4mv_block_pattern_vlc[v->fourmvbptab];
|
|
v->mbmode_vlc = ff_vc1_if_mmv_mbmode_vlc[v->mbmodetab];
|
|
} else {
|
|
v->mbmode_vlc = ff_vc1_if_1mv_mbmode_vlc[v->mbmodetab];
|
|
}
|
|
}
|
|
if (v->dquant) {
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
|
|
vop_dquant_decoding(v);
|
|
}
|
|
|
|
if (v->vstransform) {
|
|
v->ttmbf = get_bits1(gb);
|
|
if (v->ttmbf) {
|
|
v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
|
|
} else
|
|
v->ttfrm = 0; //FIXME Is that so ?
|
|
} else {
|
|
v->ttmbf = 1;
|
|
v->ttfrm = TT_8X8;
|
|
}
|
|
break;
|
|
case AV_PICTURE_TYPE_B:
|
|
if (v->fcm == ILACE_FRAME) {
|
|
if (read_bfraction(v, gb) < 0)
|
|
return AVERROR_INVALIDDATA;
|
|
if (v->bfraction == 0) {
|
|
return -1;
|
|
}
|
|
}
|
|
if (v->extended_mv)
|
|
v->mvrange = get_unary(gb, 0, 3);
|
|
else
|
|
v->mvrange = 0;
|
|
v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
|
|
v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
|
|
v->range_x = 1 << (v->k_x - 1);
|
|
v->range_y = 1 << (v->k_y - 1);
|
|
|
|
v->tt_index = (v->pq > 4) + (v->pq > 12);
|
|
|
|
if (v->field_mode) {
|
|
int mvmode;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "B Fields\n");
|
|
if (v->extended_dmv)
|
|
v->dmvrange = get_unary(gb, 0, 3);
|
|
mvmode = get_unary(gb, 1, 3);
|
|
lowquant = (v->pq > 12) ? 0 : 1;
|
|
v->mv_mode = ff_vc1_mv_pmode_table2[lowquant][mvmode];
|
|
v->qs_last = v->s.quarter_sample;
|
|
v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV || v->mv_mode == MV_PMODE_MIXED_MV);
|
|
v->s.mspel = (v->mv_mode != MV_PMODE_1MV_HPEL_BILIN);
|
|
status = bitplane_decoding(v->forward_mb_plane, &v->fmb_is_raw, v);
|
|
if (status < 0)
|
|
return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "MB Forward Type plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
v->mbmodetab = get_bits(gb, 3);
|
|
if (v->mv_mode == MV_PMODE_MIXED_MV)
|
|
v->mbmode_vlc = ff_vc1_if_mmv_mbmode_vlc[v->mbmodetab];
|
|
else
|
|
v->mbmode_vlc = ff_vc1_if_1mv_mbmode_vlc[v->mbmodetab];
|
|
v->imvtab = get_bits(gb, 3);
|
|
v->imv_vlc = ff_vc1_2ref_mvdata_vlc[v->imvtab];
|
|
v->icbptab = get_bits(gb, 3);
|
|
v->cbpcy_vlc = ff_vc1_icbpcy_vlc[v->icbptab];
|
|
if (v->mv_mode == MV_PMODE_MIXED_MV) {
|
|
v->fourmvbptab = get_bits(gb, 2);
|
|
v->fourmvbp_vlc = ff_vc1_4mv_block_pattern_vlc[v->fourmvbptab];
|
|
}
|
|
v->numref = 1; // interlaced field B pictures are always 2-ref
|
|
} else if (v->fcm == ILACE_FRAME) {
|
|
if (v->extended_dmv)
|
|
v->dmvrange = get_unary(gb, 0, 3);
|
|
if (get_bits1(gb)) /* intcomp - present but shall always be 0 */
|
|
av_log(v->s.avctx, AV_LOG_WARNING, "Intensity compensation set for B picture\n");
|
|
v->intcomp = 0;
|
|
v->mv_mode = MV_PMODE_1MV;
|
|
v->fourmvswitch = 0;
|
|
v->qs_last = v->s.quarter_sample;
|
|
v->s.quarter_sample = 1;
|
|
v->s.mspel = 1;
|
|
status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
|
|
if (status < 0)
|
|
return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
|
|
if (status < 0)
|
|
return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
v->mbmodetab = get_bits(gb, 2);
|
|
v->mbmode_vlc = ff_vc1_intfr_non4mv_mbmode_vlc[v->mbmodetab];
|
|
v->imvtab = get_bits(gb, 2);
|
|
v->imv_vlc = ff_vc1_1ref_mvdata_vlc[v->imvtab];
|
|
// interlaced p/b-picture cbpcy range is [1, 63]
|
|
v->icbptab = get_bits(gb, 3);
|
|
v->cbpcy_vlc = ff_vc1_icbpcy_vlc[v->icbptab];
|
|
v->twomvbptab = get_bits(gb, 2);
|
|
v->twomvbp_vlc = ff_vc1_2mv_block_pattern_vlc[v->twomvbptab];
|
|
v->fourmvbptab = get_bits(gb, 2);
|
|
v->fourmvbp_vlc = ff_vc1_4mv_block_pattern_vlc[v->fourmvbptab];
|
|
} else {
|
|
v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
|
|
v->qs_last = v->s.quarter_sample;
|
|
v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
|
|
v->s.mspel = v->s.quarter_sample;
|
|
status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
|
|
if (status < 0)
|
|
return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
|
|
if (status < 0)
|
|
return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
v->s.mv_table_index = get_bits(gb, 2);
|
|
v->cbptab = get_bits(gb, 2);
|
|
v->cbpcy_vlc = ff_vc1_cbpcy_p_vlc[v->cbptab];
|
|
}
|
|
|
|
if (v->dquant) {
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
|
|
vop_dquant_decoding(v);
|
|
}
|
|
|
|
if (v->vstransform) {
|
|
v->ttmbf = get_bits1(gb);
|
|
if (v->ttmbf) {
|
|
v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
|
|
} else
|
|
v->ttfrm = 0;
|
|
} else {
|
|
v->ttmbf = 1;
|
|
v->ttfrm = TT_8X8;
|
|
}
|
|
break;
|
|
}
|
|
|
|
|
|
/* AC Syntax */
|
|
v->c_ac_table_index = decode012(gb);
|
|
if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI) {
|
|
v->y_ac_table_index = decode012(gb);
|
|
}
|
|
else if (v->fcm != PROGRESSIVE && !v->s.quarter_sample) {
|
|
v->range_x <<= 1;
|
|
v->range_y <<= 1;
|
|
}
|
|
|
|
/* DC Syntax */
|
|
v->s.dc_table_index = get_bits1(gb);
|
|
if ((v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)
|
|
&& v->dquant) {
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
|
|
vop_dquant_decoding(v);
|
|
}
|
|
|
|
v->bi_type = (v->s.pict_type == AV_PICTURE_TYPE_BI);
|
|
if (v->bi_type)
|
|
v->s.pict_type = AV_PICTURE_TYPE_B;
|
|
|
|
return 0;
|
|
}
|