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author | Eugene Sandulenko | 2016-09-11 16:58:54 +0200 |
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committer | GitHub | 2016-09-11 16:58:54 +0200 |
commit | 0733cf65ba8f6babdf35547b49cd2d57c9daf646 (patch) | |
tree | 61c24edbc0a1080711c93c674b9848f4a16efb50 /image/codecs/indeo/indeo.cpp | |
parent | 49bc276ea3e297c23098d4f0e6ab331f0b89f6ee (diff) | |
parent | 08143af48293b007027d11271d3f66f7ad3107e6 (diff) | |
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Merge pull request #826 from dreammaster/indeo
IMAGE: Indeo 4 & 5 decoders
Diffstat (limited to 'image/codecs/indeo/indeo.cpp')
-rw-r--r-- | image/codecs/indeo/indeo.cpp | 1729 |
1 files changed, 1729 insertions, 0 deletions
diff --git a/image/codecs/indeo/indeo.cpp b/image/codecs/indeo/indeo.cpp new file mode 100644 index 0000000000..2bc699ecf5 --- /dev/null +++ b/image/codecs/indeo/indeo.cpp @@ -0,0 +1,1729 @@ +/* ScummVM - Graphic Adventure Engine + * + * ScummVM is the legal property of its developers, whose names + * are too numerous to list here. Please refer to the COPYRIGHT + * file distributed with this source distribution. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +/* Common structures, macros, and base class shared by both Indeo4 and + * Indeo5 decoders, derived from ffmpeg. We don't currently support Indeo5 + * decoding, but just in case we eventually need it, this is kept as a separate + * file like it is in ffmpeg. + * + * Original copyright note: * Intel Indeo 4 (IV41, IV42, etc.) video decoder for ffmpeg + * written, produced, and directed by Alan Smithee + */ + +#include "image/codecs/indeo/indeo.h" +#include "image/codecs/indeo/indeo_dsp.h" +#include "image/codecs/indeo/mem.h" +#include "graphics/yuv_to_rgb.h" +#include "common/system.h" +#include "common/algorithm.h" +#include "common/textconsole.h" +#include "common/util.h" + +namespace Image { +namespace Indeo { + +/** + * These are 2x8 predefined Huffman codebooks for coding macroblock/block + * signals. They are specified using "huffman descriptors" in order to + * avoid huge static tables. The decoding tables will be generated at + * startup from these descriptors. + */ + +/** + * Static macroblock huffman tables + */ +static const IVIHuffDesc ivi_mb_huff_desc[8] = { + {8, {0, 4, 5, 4, 4, 4, 6, 6}}, + {12, {0, 2, 2, 3, 3, 3, 3, 5, 3, 2, 2, 2}}, + {12, {0, 2, 3, 4, 3, 3, 3, 3, 4, 3, 2, 2}}, + {12, {0, 3, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2}}, + {13, {0, 4, 4, 3, 3, 3, 3, 2, 3, 3, 2, 1, 1}}, + {9, {0, 4, 4, 4, 4, 3, 3, 3, 2}}, + {10, {0, 4, 4, 4, 4, 3, 3, 2, 2, 2}}, + {12, {0, 4, 4, 4, 3, 3, 2, 3, 2, 2, 2, 2}} +}; + +/** + * static block huffman tables + */ +static const IVIHuffDesc ivi_blk_huff_desc[8] = { + {10, {1, 2, 3, 4, 4, 7, 5, 5, 4, 1} }, + {11, {2, 3, 4, 4, 4, 7, 5, 4, 3, 3, 2} }, + {12, {2, 4, 5, 5, 5, 5, 6, 4, 4, 3, 1, 1} }, + {13, {3, 3, 4, 4, 5, 6, 6, 4, 4, 3, 2, 1, 1} }, + {11, {3, 4, 4, 5, 5, 5, 6, 5, 4, 2, 2} }, + {13, {3, 4, 5, 5, 5, 5, 6, 4, 3, 3, 2, 1, 1} }, + {13, {3, 4, 5, 5, 5, 6, 5, 4, 3, 3, 2, 1, 1} }, + {9, {3, 4, 4, 5, 5, 5, 6, 5, 5} } +}; + +/*------------------------------------------------------------------------*/ + +/** + * calculate number of _tiles in a stride + */ +#define IVI_NUM_TILES(stride, tileSize) (((stride) + (tileSize) - 1) / (tileSize)) + +/*------------------------------------------------------------------------*/ + +int IVIHuffDesc::createHuffFromDesc(VLC *vlc, bool flag) const { + int pos, i, j, codesPerRow, prefix, notLastRow; + uint16 codewords[256]; + uint8 bits[256]; + + pos = 0; // current position = 0 + + for (i = 0; i < _numRows; i++) { + codesPerRow = 1 << _xBits[i]; + notLastRow = (i != _numRows - 1); + prefix = ((1 << i) - 1) << (_xBits[i] + notLastRow); + + for (j = 0; j < codesPerRow; j++) { + if (pos >= 256) // Some Indeo5 codebooks can have more than 256 + break; // elements, but only 256 codes are allowed! + + bits[pos] = i + _xBits[i] + notLastRow; + if (bits[pos] > IVI_VLC_BITS) + return -1; // invalid descriptor + + codewords[pos] = invertBits((prefix | j), bits[pos]); + if (!bits[pos]) + bits[pos] = 1; + + pos++; + }//for j + }//for i + + // number of codewords = pos + return vlc->init_vlc(IVI_VLC_BITS, pos, bits, 1, 1, codewords, 2, 2, + (flag ? INIT_VLC_USE_NEW_STATIC : 0) | INIT_VLC_LE); +} + +/*------------------------------------------------------------------------*/ + +bool IVIHuffDesc::huffDescCompare(const IVIHuffDesc *desc2) const { + return _numRows != desc2->_numRows || memcmp(_xBits, desc2->_xBits, _numRows); +} + +void IVIHuffDesc::huffDescCopy(const IVIHuffDesc *src) { + _numRows = src->_numRows; + memcpy(_xBits, src->_xBits, src->_numRows); +} + +/*------------------------------------------------------------------------*/ + +IVIHuffTab::IVIHuffTab() : _tab(nullptr) { +} + +int IVIHuffTab::decodeHuffDesc(IVI45DecContext *ctx, int descCoded, int whichTab) { + int i, result; + IVIHuffDesc newHuff; + + if (!descCoded) { + // select default table + _tab = (whichTab) ? &ctx->_iviBlkVlcTabs[7] + : &ctx->_iviMbVlcTabs[7]; + return 0; + } + + _tabSel = ctx->_gb->getBits(3); + if (_tabSel == 7) { + // custom huffman table (explicitly encoded) + newHuff._numRows = ctx->_gb->getBits(4); + if (!newHuff._numRows) { + warning("Empty custom Huffman table!"); + return -1; + } + + for (i = 0; i < newHuff._numRows; i++) + newHuff._xBits[i] = ctx->_gb->getBits(4); + + // Have we got the same custom table? Rebuild if not. + if (newHuff.huffDescCompare(&_custDesc) || !_custTab._table) { + _custDesc.huffDescCopy(&newHuff); + + if (_custTab._table) + _custTab.freeVlc(); + result = _custDesc.createHuffFromDesc(&_custTab, false); + if (result) { + // reset faulty description + _custDesc._numRows = 0; + warning("Error while initializing custom vlc table!"); + return result; + } + } + _tab = &_custTab; + } else { + // select one of predefined tables + _tab = (whichTab) ? &ctx->_iviBlkVlcTabs[_tabSel] + : &ctx->_iviMbVlcTabs[_tabSel]; + } + + return 0; +} + +/*------------------------------------------------------------------------*/ + +IVIMbInfo::IVIMbInfo() : _xPos(0), _yPos(0), _bufOffs(0), _type(0), _cbp(0), + _qDelta(0), _mvX(0), _mvY(0), _bMvX(0), _bMvY(0) { +} + +/*------------------------------------------------------------------------*/ + +IVITile::IVITile() : _xPos(0), _yPos(0), _width(0), _height(0), _mbSize(0), + _isEmpty(false), _dataSize(0), _numMBs(0), _mbs(nullptr), _refMbs(nullptr) { +} + +/*------------------------------------------------------------------------*/ + +IVIBandDesc::IVIBandDesc() : _plane(0), _bandNum(0), _width(0), _height(0), + _aHeight(0), _dataPtr(nullptr), _dataSize(0), _buf(nullptr), + _refBuf(nullptr), _bRefBuf(nullptr), _pitch(0), _isEmpty(false), + _mbSize(0), _blkSize(0), _isHalfpel(false), _inheritMv(false), _bufSize(0), + _inheritQDelta(false), _qdeltaPresent(false), _quantMat(0), _globQuant(0), + _scan(nullptr), _scanSize(0), _numCorr(0), _rvmapSel(0), _rvMap(nullptr), + _numTiles(0), _tiles(nullptr), _invTransform(nullptr), _transformSize(0), + _dcTransform(nullptr), _is2dTrans(0), _checksum(0), _checksumPresent(false), + _intraBase(nullptr), _interBase(nullptr), _intraScale(nullptr), + _interScale(nullptr) { + Common::fill(&_bufs[0], &_bufs[4], (int16 *)nullptr); + Common::fill(&_corr[0], &_corr[61 * 2], 0); +} + +int IVIBandDesc::initTiles(IVITile *refTile, int p, int b, int tHeight, int tWidth) { + int x, y; + IVITile *tile = _tiles; + + for (y = 0; y < _height; y += tHeight) { + for (x = 0; x < _width; x += tWidth) { + tile->_xPos = x; + tile->_yPos = y; + tile->_mbSize = _mbSize; + tile->_width = MIN(_width - x, tWidth); + tile->_height = MIN(_height - y, tHeight); + tile->_dataSize = 0; + tile->_isEmpty = false; + + // calculate number of macroblocks + tile->_numMBs = IVI_MBs_PER_TILE(tile->_width, tile->_height, + _mbSize); + + avFreeP(&tile->_mbs); + tile->_mbs = (IVIMbInfo *)avMallocZArray(tile->_numMBs, sizeof(IVIMbInfo)); + if (!tile->_mbs) + return -2; + + tile->_refMbs = 0; + if (p || b) { + if (tile->_numMBs != refTile->_numMBs) { + warning("refTile mismatch"); + return -1; + } + tile->_refMbs = refTile->_mbs; + refTile++; + } + tile++; + } + } + + return 0; +} + +/*------------------------------------------------------------------------*/ + +IVIPicConfig::IVIPicConfig() : _picWidth(0), _picHeight(0), _chromaWidth(0), + _chromaHeight(0), _tileWidth(0), _tileHeight(0), _lumaBands(0), _chromaBands(0) { +} + +bool IVIPicConfig::ivi_pic_config_cmp(const IVIPicConfig &cfg2) { + return _picWidth != cfg2._picWidth || _picHeight != cfg2._picHeight || + _chromaWidth != cfg2._chromaWidth || _chromaHeight != cfg2._chromaHeight || + _tileWidth != cfg2._tileWidth || _tileHeight != cfg2._tileHeight || + _lumaBands != cfg2._lumaBands || _chromaBands != cfg2._chromaBands; +} + +/*------------------------------------------------------------------------*/ + +IVIPlaneDesc::IVIPlaneDesc() : _width(0), _height(0), _numBands(0), _bands(nullptr) { +} + +int IVIPlaneDesc::initPlanes(IVIPlaneDesc *planes, const IVIPicConfig *cfg, bool isIndeo4) { + int p, b; + uint32 b_width, b_height, align_fac, width_aligned, height_aligned, bufSize; + IVIBandDesc *band; + + freeBuffers(planes); + + if (checkImageSize(cfg->_picWidth, cfg->_picHeight, 0) < 0 || + cfg->_lumaBands < 1 || cfg->_chromaBands < 1) + return -1; + + // fill in the descriptor of the luminance _plane + planes[0]._width = cfg->_picWidth; + planes[0]._height = cfg->_picHeight; + planes[0]._numBands = cfg->_lumaBands; + + // fill in the descriptors of the chrominance planes + planes[1]._width = planes[2]._width = (cfg->_picWidth + 3) >> 2; + planes[1]._height = planes[2]._height = (cfg->_picHeight + 3) >> 2; + planes[1]._numBands = planes[2]._numBands = cfg->_chromaBands; + + for (p = 0; p < 3; p++) { + planes[p]._bands = (IVIBandDesc *)avMallocZArray(planes[p]._numBands, sizeof(IVIBandDesc)); + if (!planes[p]._bands) + return -2; + + // select band dimensions: if there is only one band then it + // has the full size, if there are several bands each of them + // has only half size + b_width = planes[p]._numBands == 1 ? planes[p]._width + : (planes[p]._width + 1) >> 1; + b_height = planes[p]._numBands == 1 ? planes[p]._height + : (planes[p]._height + 1) >> 1; + + // luma band buffers will be aligned on 16x16 (max macroblock size) + // chroma band buffers will be aligned on 8x8 (max macroblock size) + align_fac = p ? 8 : 16; + width_aligned = FFALIGN(b_width, align_fac); + height_aligned = FFALIGN(b_height, align_fac); + bufSize = width_aligned * height_aligned * sizeof(int16); + + for (b = 0; b < planes[p]._numBands; b++) { + band = &planes[p]._bands[b]; // select appropriate _plane/band + band->_plane = p; + band->_bandNum = b; + band->_width = b_width; + band->_height = b_height; + band->_pitch = width_aligned; + band->_aHeight = height_aligned; + band->_bufs[0] = (int16 *)avMallocZ(bufSize); + band->_bufs[1] = (int16 *)avMallocZ(bufSize); + band->_bufSize = bufSize / 2; + if (!band->_bufs[0] || !band->_bufs[1]) + return -2; + + // allocate the 3rd band buffer for scalability mode + if (cfg->_lumaBands > 1) { + band->_bufs[2] = (int16 *)avMallocZ(bufSize); + if (!band->_bufs[2]) + return -2; + } + if (isIndeo4) { + band->_bufs[3] = (int16 *)avMallocZ(bufSize); + if (!band->_bufs[3]) + return -2; + } + // reset custom vlc + planes[p]._bands[0]._blkVlc._custDesc._numRows = 0; + } + } + + return 0; +} + +int IVIPlaneDesc::initTiles(IVIPlaneDesc *planes, int tileWidth, int tileHeight) { + int p, b, xTiles, yTiles, tWidth, tHeight, ret; + IVIBandDesc *band; + + for (p = 0; p < 3; p++) { + tWidth = !p ? tileWidth : (tileWidth + 3) >> 2; + tHeight = !p ? tileHeight : (tileHeight + 3) >> 2; + + if (!p && planes[0]._numBands == 4) { + tWidth >>= 1; + tHeight >>= 1; + } + if (tWidth <= 0 || tHeight <= 0) + return -3; + + for (b = 0; b < planes[p]._numBands; b++) { + band = &planes[p]._bands[b]; + xTiles = IVI_NUM_TILES(band->_width, tWidth); + yTiles = IVI_NUM_TILES(band->_height, tHeight); + band->_numTiles = xTiles * yTiles; + + avFreeP(&band->_tiles); + band->_tiles = (IVITile *)avMallocZArray(band->_numTiles, sizeof(IVITile)); + if (!band->_tiles) + return -2; + + // use the first luma band as reference for motion vectors + // and quant + ret = band->initTiles(planes[0]._bands[0]._tiles, + p, b, tHeight, tWidth); + if (ret < 0) + return ret; + } + } + + return 0; +} + +void IVIPlaneDesc::freeBuffers(IVIPlaneDesc *planes) { + int p, b, t; + + for (p = 0; p < 3; p++) { + if (planes[p]._bands) + for (b = 0; b < planes[p]._numBands; b++) { + avFreeP(&planes[p]._bands[b]._bufs[0]); + avFreeP(&planes[p]._bands[b]._bufs[1]); + avFreeP(&planes[p]._bands[b]._bufs[2]); + avFreeP(&planes[p]._bands[b]._bufs[3]); + + if (planes[p]._bands[b]._blkVlc._custTab._table) + planes[p]._bands[b]._blkVlc._custTab.freeVlc(); + for (t = 0; t < planes[p]._bands[b]._numTiles; t++) + avFreeP(&planes[p]._bands[b]._tiles[t]._mbs); + avFreeP(&planes[p]._bands[b]._tiles); + } + avFreeP(&planes[p]._bands); + planes[p]._numBands = 0; + } +} + +int IVIPlaneDesc::checkImageSize(unsigned int w, unsigned int h, int log_offset) { + if (((w + 128) * (uint64)(h + 128)) < (MAX_INTEGER / 8)) + return 0; + + error("Picture size %ux%u is invalid", w, h); +} + +/*------------------------------------------------------------------------*/ + +AVFrame::AVFrame() { + Common::fill(&_data[0], &_data[AV_NUM_DATA_POINTERS], (uint8 *)nullptr); + Common::fill(&_linesize[0], &_linesize[AV_NUM_DATA_POINTERS], 0); +} + +int AVFrame::setDimensions(uint16 width, uint16 height) { + _width = width; + _height = height; + _linesize[0] = _linesize[1] = _linesize[2] = width; + + return 0; +} + +int AVFrame::getBuffer(int flags) { + freeFrame(); + + // Luminance channel + _data[0] = (uint8 *)avMallocZ(_width * _height); + + // UV Chroma Channels + _data[1] = (uint8 *)malloc(_width * _height); + _data[2] = (uint8 *)malloc(_width * _height); + Common::fill(_data[1], _data[1] + _width * _height, 0x80); + Common::fill(_data[2], _data[2] + _width * _height, 0x80); + + return 0; +} + +void AVFrame::freeFrame() { + avFreeP(&_data[0]); + avFreeP(&_data[1]); + avFreeP(&_data[2]); +} + +/*------------------------------------------------------------------------*/ + +IVI45DecContext::IVI45DecContext() : _gb(nullptr), _frameNum(0), _frameType(0), + _prevFrameType(0), _dataSize(0), _isScalable(0), _frameData(0), + _interScal(0), _frameSize(0), _picHdrSize(0), _frameFlags(0), + _checksum(0), _bufSwitch(0), _dstBuf(0), _refBuf(0), _ref2Buf(0), + _bRefBuf(0), _rvmapSel(0), _inImf(false), _inQ(false), _picGlobQuant(0), + _unknown1(0), _gopHdrSize(0), _gopFlags(0), _lockWord(0), _hasBFrames(false), + _hasTransp(false), _usesTiling(false), _usesHaar(false), _usesFullpel(false), + _gopInvalid(false), _isIndeo4(false), _pFrame(nullptr), _gotPFrame(false) { + Common::fill(&_bufInvalid[0], &_bufInvalid[4], 0); + Common::copy(&_ff_ivi_rvmap_tabs[0], &_ff_ivi_rvmap_tabs[9], &_rvmapTabs[0]); + + for (int idx = 0; idx < (8192 * 16); ++idx) + _tableData[idx][0] = _tableData[idx][1] = 0; + + for (int i = 0; i < 8; i++) { + _iviMbVlcTabs[i]._table = _tableData + i * 2 * 8192; + _iviMbVlcTabs[i]._tableAllocated = 8192; + ivi_mb_huff_desc[i].createHuffFromDesc(&_iviMbVlcTabs[i], true); + _iviBlkVlcTabs[i]._table = _tableData + (i * 2 + 1) * 8192; + _iviBlkVlcTabs[i]._tableAllocated = 8192; + ivi_blk_huff_desc[i].createHuffFromDesc(&_iviBlkVlcTabs[i], true); + } +} + +/*------------------------------------------------------------------------*/ + +IndeoDecoderBase::IndeoDecoderBase(uint16 width, uint16 height) : Codec() { + _pixelFormat = g_system->getScreenFormat(); + assert(_pixelFormat.bytesPerPixel > 1); + _surface = new Graphics::ManagedSurface(); + _surface->create(width, height, _pixelFormat); + _surface->fillRect(Common::Rect(0, 0, width, height), 0); + _ctx._bRefBuf = 3; // buffer 2 is used for scalability mode +} + +IndeoDecoderBase::~IndeoDecoderBase() { + delete _surface; + IVIPlaneDesc::freeBuffers(_ctx._planes); + if (_ctx._mbVlc._custTab._table) + _ctx._mbVlc._custTab.freeVlc(); + + delete _ctx._pFrame; +} + +int IndeoDecoderBase::decodeIndeoFrame() { + int result, p, b; + AVFrame frameData; + AVFrame *frame = &frameData; + + // Decode the header + if (decodePictureHeader() < 0) + return -1; + + if (_ctx._gopInvalid) + return -1; + + if (_ctx._frameType == IVI4_FRAMETYPE_NULL_LAST) { + // Returning the previous frame, so exit wth success + return 0; + } + + if (_ctx._gopFlags & IVI5_IS_PROTECTED) { + warning("Password-protected clip"); + return -1; + } + + if (!_ctx._planes[0]._bands) { + warning("Color planes not initialized yet"); + return -1; + } + + switchBuffers(); + + //{ START_TIMER; + + if (isNonNullFrame()) { + _ctx._bufInvalid[_ctx._dstBuf] = 1; + for (p = 0; p < 3; p++) { + for (b = 0; b < _ctx._planes[p]._numBands; b++) { + result = decode_band(&_ctx._planes[p]._bands[b]); + if (result < 0) { + warning("Error while decoding band: %d, _plane: %d", b, p); + return result; + } + } + } + _ctx._bufInvalid[_ctx._dstBuf] = 0; + } else { + if (_ctx._isScalable) + return -1; + + for (p = 0; p < 3; p++) { + if (!_ctx._planes[p]._bands[0]._buf) + return -1; + } + } + if (_ctx._bufInvalid[_ctx._dstBuf]) + return -1; + + //STOP_TIMER("decode_planes"); } + + if (!isNonNullFrame()) + return 0; + + assert(_ctx._planes[0]._width <= _surface->w && _ctx._planes[0]._height <= _surface->h); + result = frame->setDimensions(_ctx._planes[0]._width, _ctx._planes[0]._height); + if (result < 0) + return result; + + if ((result = frame->getBuffer(0)) < 0) + return result; + + if (_ctx._isScalable) { + if (_ctx._isIndeo4) + recomposeHaar(&_ctx._planes[0], frame->_data[0], frame->_linesize[0]); + else + recompose53(&_ctx._planes[0], frame->_data[0], frame->_linesize[0]); + } else { + outputPlane(&_ctx._planes[0], frame->_data[0], frame->_linesize[0]); + } + + outputPlane(&_ctx._planes[2], frame->_data[1], frame->_linesize[1]); + outputPlane(&_ctx._planes[1], frame->_data[2], frame->_linesize[2]); + + // If the bidirectional mode is enabled, next I and the following P + // frame will be sent together. Unfortunately the approach below seems + // to be the only way to handle the B-frames mode. + // That's exactly the same Intel decoders do. + if (_ctx._isIndeo4 && _ctx._frameType == IVI4_FRAMETYPE_INTRA) { + int left; + + // skip version string + while (_ctx._gb->getBits(8)) { + if (_ctx._gb->getBitsLeft() < 8) + return -1; + } + left = _ctx._gb->pos() & 0x18; + _ctx._gb->skip(64 - left); + if (_ctx._gb->getBitsLeft() > 18 && + _ctx._gb->peekBits(21) == 0xBFFF8) { // syncheader + inter _type + error("Indeo decoder: Mode not currently implemented in ScummVM"); + } + } + + // Merge the planes into the final surface + Graphics::Surface s = _surface->getSubArea(Common::Rect(0, 0, _surface->w, _surface->h)); + YUVToRGBMan.convert410(&s, Graphics::YUVToRGBManager::kScaleITU, + frame->_data[0], frame->_data[1], frame->_data[2], frame->_width, frame->_height, + frame->_width, frame->_width); + + // Free the now un-needed frame data + frame->freeFrame(); + + return 0; +} + +int IndeoDecoderBase::decode_band(IVIBandDesc *band) { + int result, i, t, idx1, idx2, pos; + IVITile *tile; + + band->_buf = band->_bufs[_ctx._dstBuf]; + if (!band->_buf) { + warning("Band buffer points to no data!"); + return -1; + } + if (_ctx._isIndeo4 && _ctx._frameType == IVI4_FRAMETYPE_BIDIR) { + band->_refBuf = band->_bufs[_ctx._bRefBuf]; + band->_bRefBuf = band->_bufs[_ctx._refBuf]; + } else { + band->_refBuf = band->_bufs[_ctx._refBuf]; + band->_bRefBuf = 0; + } + band->_dataPtr = _ctx._frameData + (_ctx._gb->pos() >> 3); + + result = decodeBandHeader(band); + if (result) { + warning("Error while decoding band header: %d", + result); + return result; + } + + if (band->_isEmpty) { + warning("Empty band encountered!"); + return -1; + } + + band->_rvMap = &_ctx._rvmapTabs[band->_rvmapSel]; + + // apply corrections to the selected rvmap table if present + for (i = 0; i < band->_numCorr; i++) { + idx1 = band->_corr[i * 2]; + idx2 = band->_corr[i * 2 + 1]; + SWAP(band->_rvMap->_runtab[idx1], band->_rvMap->_runtab[idx2]); + SWAP(band->_rvMap->_valtab[idx1], band->_rvMap->_valtab[idx2]); + if (idx1 == band->_rvMap->_eobSym || idx2 == band->_rvMap->_eobSym) + band->_rvMap->_eobSym ^= idx1 ^ idx2; + if (idx1 == band->_rvMap->_escSym || idx2 == band->_rvMap->_escSym) + band->_rvMap->_escSym ^= idx1 ^ idx2; + } + + pos = _ctx._gb->pos(); + + for (t = 0; t < band->_numTiles; t++) { + tile = &band->_tiles[t]; + + if (tile->_mbSize != band->_mbSize) { + warning("MB sizes mismatch: %d vs. %d", + band->_mbSize, tile->_mbSize); + return -1; + } + tile->_isEmpty = _ctx._gb->getBit(); + if (tile->_isEmpty) { + result = processEmptyTile(band, tile, + (_ctx._planes[0]._bands[0]._mbSize >> 3) - (band->_mbSize >> 3)); + if (result < 0) + break; + warning("Empty tile encountered!"); + } else { + tile->_dataSize = decodeTileDataSize(_ctx._gb); + if (!tile->_dataSize) { + warning("Tile data size is zero!"); + result = -1; + break; + } + + result = decodeMbInfo(band, tile); + if (result < 0) + break; + + result = decodeBlocks(_ctx._gb, band, tile); + if (result < 0) { + warning("Corrupted tile data encountered!"); + break; + } + + if ((((int)_ctx._gb->pos() - pos) >> 3) != tile->_dataSize) { + warning("Tile _dataSize mismatch!"); + result = -1; + break; + } + + pos += tile->_dataSize << 3; // skip to next tile + } + } + + // restore the selected rvmap table by applying its corrections in + // reverse order + for (i = band->_numCorr - 1; i >= 0; i--) { + idx1 = band->_corr[i * 2]; + idx2 = band->_corr[i * 2 + 1]; + SWAP(band->_rvMap->_runtab[idx1], band->_rvMap->_runtab[idx2]); + SWAP(band->_rvMap->_valtab[idx1], band->_rvMap->_valtab[idx2]); + if (idx1 == band->_rvMap->_eobSym || idx2 == band->_rvMap->_eobSym) + band->_rvMap->_eobSym ^= idx1 ^ idx2; + if (idx1 == band->_rvMap->_escSym || idx2 == band->_rvMap->_escSym) + band->_rvMap->_escSym ^= idx1 ^ idx2; + } + + _ctx._gb->align(); + + return result; +} + +void IndeoDecoderBase::recomposeHaar(const IVIPlaneDesc *_plane, + uint8 *dst, const int dstPitch) { + int x, y, indx, b0, b1, b2, b3, p0, p1, p2, p3; + const short *b0Ptr, *b1Ptr, *b2Ptr, *b3Ptr; + int32 pitch; + + // all bands should have the same _pitch + pitch = _plane->_bands[0]._pitch; + + // get pointers to the wavelet bands + b0Ptr = _plane->_bands[0]._buf; + b1Ptr = _plane->_bands[1]._buf; + b2Ptr = _plane->_bands[2]._buf; + b3Ptr = _plane->_bands[3]._buf; + + for (y = 0; y < _plane->_height; y += 2) { + for (x = 0, indx = 0; x < _plane->_width; x += 2, indx++) { + // load coefficients + b0 = b0Ptr[indx]; //should be: b0 = (_numBands > 0) ? b0Ptr[indx] : 0; + b1 = b1Ptr[indx]; //should be: b1 = (_numBands > 1) ? b1Ptr[indx] : 0; + b2 = b2Ptr[indx]; //should be: b2 = (_numBands > 2) ? b2Ptr[indx] : 0; + b3 = b3Ptr[indx]; //should be: b3 = (_numBands > 3) ? b3Ptr[indx] : 0; + + // haar wavelet recomposition + p0 = (b0 + b1 + b2 + b3 + 2) >> 2; + p1 = (b0 + b1 - b2 - b3 + 2) >> 2; + p2 = (b0 - b1 + b2 - b3 + 2) >> 2; + p3 = (b0 - b1 - b2 + b3 + 2) >> 2; + + // bias, convert and output four pixels + dst[x] = avClipUint8(p0 + 128); + dst[x + 1] = avClipUint8(p1 + 128); + dst[dstPitch + x] = avClipUint8(p2 + 128); + dst[dstPitch + x + 1] = avClipUint8(p3 + 128); + }// for x + + dst += dstPitch << 1; + + b0Ptr += pitch; + b1Ptr += pitch; + b2Ptr += pitch; + b3Ptr += pitch; + }// for y +} + +void IndeoDecoderBase::recompose53(const IVIPlaneDesc *_plane, + uint8 *dst, const int dstPitch) { + int x, y, indx; + int32 p0, p1, p2, p3, tmp0, tmp1, tmp2; + int32 b0_1, b0_2, b1_1, b1_2, b1_3, b2_1, b2_2, b2_3, b2_4, b2_5, b2_6; + int32 b3_1, b3_2, b3_3, b3_4, b3_5, b3_6, b3_7, b3_8, b3_9; + int32 _pitch, back_pitch; + const short *b0Ptr, *b1Ptr, *b2Ptr, *b3Ptr; + const int numBands = 4; + + // all bands should have the same _pitch + _pitch = _plane->_bands[0]._pitch; + + // pixels at the position "y-1" will be set to pixels at the "y" for the 1st iteration + back_pitch = 0; + + // get pointers to the wavelet bands + b0Ptr = _plane->_bands[0]._buf; + b1Ptr = _plane->_bands[1]._buf; + b2Ptr = _plane->_bands[2]._buf; + b3Ptr = _plane->_bands[3]._buf; + + for (y = 0; y < _plane->_height; y += 2) { + + if (y + 2 >= _plane->_height) + _pitch = 0; + // load storage variables with values + if (numBands > 0) { + b0_1 = b0Ptr[0]; + b0_2 = b0Ptr[_pitch]; + } + + if (numBands > 1) { + b1_1 = b1Ptr[back_pitch]; + b1_2 = b1Ptr[0]; + b1_3 = b1_1 - b1_2 * 6 + b1Ptr[_pitch]; + } + + if (numBands > 2) { + b2_2 = b2Ptr[0]; // b2[x, y ] + b2_3 = b2_2; // b2[x+1,y ] = b2[x,y] + b2_5 = b2Ptr[_pitch]; // b2[x ,y+1] + b2_6 = b2_5; // b2[x+1,y+1] = b2[x,y+1] + } + + if (numBands > 3) { + b3_2 = b3Ptr[back_pitch]; // b3[x ,y-1] + b3_3 = b3_2; // b3[x+1,y-1] = b3[x ,y-1] + b3_5 = b3Ptr[0]; // b3[x ,y ] + b3_6 = b3_5; // b3[x+1,y ] = b3[x ,y ] + b3_8 = b3_2 - b3_5 * 6 + b3Ptr[_pitch]; + b3_9 = b3_8; + } + + for (x = 0, indx = 0; x < _plane->_width; x += 2, indx++) { + if (x + 2 >= _plane->_width) { + b0Ptr--; + b1Ptr--; + b2Ptr--; + b3Ptr--; + } + + // some values calculated in the previous iterations can + // be reused in the next ones, so do appropriate copying + b2_1 = b2_2; // b2[x-1,y ] = b2[x, y ] + b2_2 = b2_3; // b2[x ,y ] = b2[x+1,y ] + b2_4 = b2_5; // b2[x-1,y+1] = b2[x ,y+1] + b2_5 = b2_6; // b2[x ,y+1] = b2[x+1,y+1] + b3_1 = b3_2; // b3[x-1,y-1] = b3[x ,y-1] + b3_2 = b3_3; // b3[x ,y-1] = b3[x+1,y-1] + b3_4 = b3_5; // b3[x-1,y ] = b3[x ,y ] + b3_5 = b3_6; // b3[x ,y ] = b3[x+1,y ] + b3_7 = b3_8; // vert_HPF(x-1) + b3_8 = b3_9; // vert_HPF(x ) + + p0 = p1 = p2 = p3 = 0; + + // process the LL-band by applying LPF both vertically and horizontally + if (numBands > 0) { + tmp0 = b0_1; + tmp2 = b0_2; + b0_1 = b0Ptr[indx + 1]; + b0_2 = b0Ptr[_pitch + indx + 1]; + tmp1 = tmp0 + b0_1; + + p0 = tmp0 << 4; + p1 = tmp1 << 3; + p2 = (tmp0 + tmp2) << 3; + p3 = (tmp1 + tmp2 + b0_2) << 2; + } + + // process the HL-band by applying HPF vertically and LPF horizontally + if (numBands > 1) { + tmp0 = b1_2; + tmp1 = b1_1; + b1_2 = b1Ptr[indx + 1]; + b1_1 = b1Ptr[back_pitch + indx + 1]; + + tmp2 = tmp1 - tmp0 * 6 + b1_3; + b1_3 = b1_1 - b1_2 * 6 + b1Ptr[_pitch + indx + 1]; + + p0 += (tmp0 + tmp1) << 3; + p1 += (tmp0 + tmp1 + b1_1 + b1_2) << 2; + p2 += tmp2 << 2; + p3 += (tmp2 + b1_3) << 1; + } + + // process the LH-band by applying LPF vertically and HPF horizontally + if (numBands > 2) { + b2_3 = b2Ptr[indx + 1]; + b2_6 = b2Ptr[_pitch + indx + 1]; + + tmp0 = b2_1 + b2_2; + tmp1 = b2_1 - b2_2 * 6 + b2_3; + + p0 += tmp0 << 3; + p1 += tmp1 << 2; + p2 += (tmp0 + b2_4 + b2_5) << 2; + p3 += (tmp1 + b2_4 - b2_5 * 6 + b2_6) << 1; + } + + // process the HH-band by applying HPF both vertically and horizontally + if (numBands > 3) { + b3_6 = b3Ptr[indx + 1]; // b3[x+1,y ] + b3_3 = b3Ptr[back_pitch + indx + 1]; // b3[x+1,y-1] + + tmp0 = b3_1 + b3_4; + tmp1 = b3_2 + b3_5; + tmp2 = b3_3 + b3_6; + + b3_9 = b3_3 - b3_6 * 6 + b3Ptr[_pitch + indx + 1]; + + p0 += (tmp0 + tmp1) << 2; + p1 += (tmp0 - tmp1 * 6 + tmp2) << 1; + p2 += (b3_7 + b3_8) << 1; + p3 += b3_7 - b3_8 * 6 + b3_9; + } + + // output four pixels + dst[x] = avClipUint8((p0 >> 6) + 128); + dst[x + 1] = avClipUint8((p1 >> 6) + 128); + dst[dstPitch + x] = avClipUint8((p2 >> 6) + 128); + dst[dstPitch + x + 1] = avClipUint8((p3 >> 6) + 128); + }// for x + + dst += dstPitch << 1; + + back_pitch = -_pitch; + + b0Ptr += _pitch + 1; + b1Ptr += _pitch + 1; + b2Ptr += _pitch + 1; + b3Ptr += _pitch + 1; + } +} + +void IndeoDecoderBase::outputPlane(IVIPlaneDesc *_plane, uint8 *dst, int dstPitch) { + int x, y; + const int16 *src = _plane->_bands[0]._buf; + uint32 pitch = _plane->_bands[0]._pitch; + + if (!src) + return; + + for (y = 0; y < _plane->_height; y++) { + for (x = 0; x < _plane->_width; x++) + dst[x] = avClipUint8(src[x] + 128); + src += pitch; + dst += dstPitch; + } +} + +int IndeoDecoderBase::processEmptyTile(IVIBandDesc *band, + IVITile *tile, int32 mvScale) { + int x, y, needMc, mbn, blk, numBlocks, mvX, mvY, mcType; + int offs, mbOffset, rowOffset, ret; + IVIMbInfo *mb, *refMb; + const int16 *src; + int16 *dst; + IviMCFunc mcNoDeltaFunc; + + if (tile->_numMBs != IVI_MBs_PER_TILE(tile->_width, tile->_height, band->_mbSize)) { + warning("Allocated tile size %d mismatches " + "parameters %d in processEmptyTile()", + tile->_numMBs, IVI_MBs_PER_TILE(tile->_width, tile->_height, band->_mbSize)); + return -1; + } + + offs = tile->_yPos * band->_pitch + tile->_xPos; + mb = tile->_mbs; + refMb = tile->_refMbs; + rowOffset = band->_mbSize * band->_pitch; + needMc = 0; // reset the mc tracking flag + + for (y = tile->_yPos; y < (tile->_yPos + tile->_height); y += band->_mbSize) { + mbOffset = offs; + + for (x = tile->_xPos; x < (tile->_xPos + tile->_width); x += band->_mbSize) { + mb->_xPos = x; + mb->_yPos = y; + mb->_bufOffs = mbOffset; + + mb->_type = 1; // set the macroblocks _type = INTER + mb->_cbp = 0; // all blocks are empty + + if (!band->_qdeltaPresent && !band->_plane && !band->_bandNum) { + mb->_qDelta = band->_globQuant; + mb->_mvX = 0; + mb->_mvY = 0; + } + + if (band->_inheritQDelta && refMb) + mb->_qDelta = refMb->_qDelta; + + if (band->_inheritMv && refMb) { + // motion vector inheritance + if (mvScale) { + mb->_mvX = scaleMV(refMb->_mvX, mvScale); + mb->_mvY = scaleMV(refMb->_mvY, mvScale); + } else { + mb->_mvX = refMb->_mvX; + mb->_mvY = refMb->_mvY; + } + needMc |= mb->_mvX || mb->_mvY; // tracking non-zero motion vectors + { + int dmv_x, dmv_y, cx, cy; + + dmv_x = mb->_mvX >> band->_isHalfpel; + dmv_y = mb->_mvY >> band->_isHalfpel; + cx = mb->_mvX & band->_isHalfpel; + cy = mb->_mvY & band->_isHalfpel; + + if (mb->_xPos + dmv_x < 0 + || mb->_xPos + dmv_x + band->_mbSize + cx > band->_pitch + || mb->_yPos + dmv_y < 0 + || mb->_yPos + dmv_y + band->_mbSize + cy > band->_aHeight) { + warning("MV out of bounds"); + return -1; + } + } + } + + mb++; + if (refMb) + refMb++; + mbOffset += band->_mbSize; + } // for x + offs += rowOffset; + } // for y + + if (band->_inheritMv && needMc) { // apply motion compensation if there is at least one non-zero motion vector + numBlocks = (band->_mbSize != band->_blkSize) ? 4 : 1; // number of blocks per mb + mcNoDeltaFunc = (band->_blkSize == 8) ? IndeoDSP::ffIviMc8x8NoDelta + : IndeoDSP::ffIviMc4x4NoDelta; + + for (mbn = 0, mb = tile->_mbs; mbn < tile->_numMBs; mb++, mbn++) { + mvX = mb->_mvX; + mvY = mb->_mvY; + if (!band->_isHalfpel) { + mcType = 0; // we have only fullpel vectors + } else { + mcType = ((mvY & 1) << 1) | (mvX & 1); + mvX >>= 1; + mvY >>= 1; // convert halfpel vectors into fullpel ones + } + + for (blk = 0; blk < numBlocks; blk++) { + // adjust block position in the buffer according with its number + offs = mb->_bufOffs + band->_blkSize * ((blk & 1) + !!(blk & 2) * band->_pitch); + ret = iviMc(band, mcNoDeltaFunc, nullptr, offs, + mvX, mvY, 0, 0, mcType, -1); + if (ret < 0) + return ret; + } + } + } else { + // copy data from the reference tile into the current one + src = band->_refBuf + tile->_yPos * band->_pitch + tile->_xPos; + dst = band->_buf + tile->_yPos * band->_pitch + tile->_xPos; + for (y = 0; y < tile->_height; y++) { + memcpy(dst, src, tile->_width*sizeof(band->_buf[0])); + src += band->_pitch; + dst += band->_pitch; + } + } + + return 0; +} + +int IndeoDecoderBase::decodeTileDataSize(GetBits *gb) { + int len = 0; + + if (gb->getBit()) { + len = gb->getBits(8); + if (len == 255) + len = gb->getBits(24); + } + + // align the bitstream reader on the byte boundary + gb->align(); + + return len; +} + +int IndeoDecoderBase::decodeBlocks(GetBits *_gb, IVIBandDesc *band, IVITile *tile) { + int mbn, blk, numBlocks, blkSize, ret, isIntra; + int mcType = 0, mcType2 = -1; + int mvX = 0, mvY = 0, mvX2 = 0, mvY2 = 0; + int32 prevDc; + uint32 cbp, quant, bufOffs; + IVIMbInfo *mb; + IviMCFunc mcWithDeltaFunc, mcNoDeltaFunc; + IviMCAvgFunc mcAvgWithDeltaFunc, mcAvgNoDeltaFunc; + const uint8 *scaleTab; + + // init intra prediction for the DC coefficient + prevDc = 0; + blkSize = band->_blkSize; + // number of blocks per mb + numBlocks = (band->_mbSize != blkSize) ? 4 : 1; + if (blkSize == 8) { + mcWithDeltaFunc = IndeoDSP::ffIviMc8x8Delta; + mcNoDeltaFunc = IndeoDSP::ffIviMc8x8NoDelta; + mcAvgWithDeltaFunc = IndeoDSP::ffIviMcAvg8x8Delta; + mcAvgNoDeltaFunc = IndeoDSP::ffIviMcAvg8x8NoDelta; + } else { + mcWithDeltaFunc = IndeoDSP::ffIviMc4x4Delta; + mcNoDeltaFunc = IndeoDSP::ffIviMc4x4NoDelta; + mcAvgWithDeltaFunc = IndeoDSP::ffIviMcAvg4x4Delta; + mcAvgNoDeltaFunc = IndeoDSP::ffIviMcAvg4x4NoDelta; + } + + for (mbn = 0, mb = tile->_mbs; mbn < tile->_numMBs; mb++, mbn++) { + isIntra = !mb->_type; + cbp = mb->_cbp; + bufOffs = mb->_bufOffs; + + quant = band->_globQuant + mb->_qDelta; + if (_ctx._isIndeo4) + quant = avClipUintp2(quant, 5); + else + quant = av_clip((int)quant, 0, 23); + + scaleTab = isIntra ? band->_intraScale : band->_interScale; + if (scaleTab) + quant = scaleTab[quant]; + + if (!isIntra) { + mvX = mb->_mvX; + mvY = mb->_mvY; + mvX2 = mb->_bMvX; + mvY2 = mb->_bMvY; + if (band->_isHalfpel) { + mcType = ((mvY & 1) << 1) | (mvX & 1); + mcType2 = ((mvY2 & 1) << 1) | (mvX2 & 1); + mvX >>= 1; + mvY >>= 1; + mvX2 >>= 1; + mvY2 >>= 1; // convert halfpel vectors into fullpel ones + } + if (mb->_type == 2) + mcType = -1; + if (mb->_type != 2 && mb->_type != 3) + mcType2 = -1; + if (mb->_type) { + int dmv_x, dmv_y, cx, cy; + + dmv_x = mb->_mvX >> band->_isHalfpel; + dmv_y = mb->_mvY >> band->_isHalfpel; + cx = mb->_mvX & band->_isHalfpel; + cy = mb->_mvY & band->_isHalfpel; + + if (mb->_xPos + dmv_x < 0 || + mb->_xPos + dmv_x + band->_mbSize + cx > band->_pitch || + mb->_yPos + dmv_y < 0 || + mb->_yPos + dmv_y + band->_mbSize + cy > band->_aHeight) { + return -1; + } + } + if (mb->_type == 2 || mb->_type == 3) { + int dmv_x, dmv_y, cx, cy; + + dmv_x = mb->_bMvX >> band->_isHalfpel; + dmv_y = mb->_bMvY >> band->_isHalfpel; + cx = mb->_bMvX & band->_isHalfpel; + cy = mb->_bMvY & band->_isHalfpel; + + if (mb->_xPos + dmv_x < 0 || + mb->_xPos + dmv_x + band->_mbSize + cx > band->_pitch || + mb->_yPos + dmv_y < 0 || + mb->_yPos + dmv_y + band->_mbSize + cy > band->_aHeight) { + return -1; + } + } + } + + for (blk = 0; blk < numBlocks; blk++) { + // adjust block position in the buffer according to its number + if (blk & 1) { + bufOffs += blkSize; + } else if (blk == 2) { + bufOffs -= blkSize; + bufOffs += blkSize * band->_pitch; + } + + if (cbp & 1) { // block coded ? + ret = ivi_decode_coded_blocks(_gb, band, mcWithDeltaFunc, + mcAvgWithDeltaFunc, + mvX, mvY, mvX2, mvY2, + &prevDc, isIntra, + mcType, mcType2, quant, + bufOffs); + if (ret < 0) + return ret; + } else { + // block not coded + // for intra blocks apply the dc slant transform + // for inter - perform the motion compensation without delta + if (isIntra) { + ret = ivi_dc_transform(band, &prevDc, bufOffs, blkSize); + if (ret < 0) + return ret; + } else { + ret = iviMc(band, mcNoDeltaFunc, mcAvgNoDeltaFunc, + bufOffs, mvX, mvY, mvX2, mvY2, + mcType, mcType2); + if (ret < 0) + return ret; + } + } + + cbp >>= 1; + }// for blk + }// for mbn + + _gb->align(); + return 0; +} + +int IndeoDecoderBase::scaleMV(int mv, int mvScale) { + return (mv + (mv > 0) + (mvScale - 1)) >> mvScale; +} + +int IndeoDecoderBase::iviMc(IVIBandDesc *band, IviMCFunc mc, IviMCAvgFunc mcAvg, + int offs, int mvX, int mvY, int mvX2, int mvY2, + int mcType, int mcType2) { + int refOffs = offs + mvY * band->_pitch + mvX; + int bufSize = band->_pitch * band->_aHeight; + int minSize = band->_pitch * (band->_blkSize - 1) + band->_blkSize; + int refSize = (mcType > 1) * band->_pitch + (mcType & 1); + + if (mcType != -1) { + assert(offs >= 0 && refOffs >= 0 && band->_refBuf); + assert(bufSize - minSize >= offs); + assert(bufSize - minSize - refSize >= refOffs); + } + + if (mcType2 == -1) { + mc(band->_buf + offs, band->_refBuf + refOffs, band->_pitch, mcType); + } else { + int ref_offs2 = offs + mvY2 * band->_pitch + mvX2; + int ref_size2 = (mcType2 > 1) * band->_pitch + (mcType2 & 1); + if (offs < 0 || ref_offs2 < 0 || !band->_bRefBuf) + return -1; + if (bufSize - minSize - ref_size2 < ref_offs2) + return -1; + + if (mcType == -1) + mc(band->_buf + offs, band->_bRefBuf + ref_offs2, + band->_pitch, mcType2); + else + mcAvg(band->_buf + offs, band->_refBuf + refOffs, + band->_bRefBuf + ref_offs2, band->_pitch, + mcType, mcType2); + } + + return 0; +} + +int IndeoDecoderBase::ivi_decode_coded_blocks(GetBits *gb, IVIBandDesc *band, + IviMCFunc mc, IviMCAvgFunc mcAvg, int mvX, int mvY, + int mvX2, int mvY2, int *prevDc, int isIntra, + int mcType, int mcType2, uint32 quant, int offs) { + const uint16 *baseTab = isIntra ? band->_intraBase : band->_interBase; + RVMapDesc *rvmap = band->_rvMap; + uint8 colFlags[8]; + int32 trvec[64]; + uint32 sym = 0, q; + int lo, hi; + int pos, run, val; + int blkSize = band->_blkSize; + int numCoeffs = blkSize * blkSize; + int colMask = blkSize - 1; + int scanPos = -1; + int minSize = band->_pitch * (band->_transformSize - 1) + + band->_transformSize; + int bufSize = band->_pitch * band->_aHeight - offs; + + if (minSize > bufSize) + return -1; + + if (!band->_scan) { + warning("Scan pattern is not set."); + return -1; + } + + // zero transform vector + memset(trvec, 0, numCoeffs * sizeof(trvec[0])); + // zero column flags + memset(colFlags, 0, sizeof(colFlags)); + while (scanPos <= numCoeffs) { + sym = gb->getVLC2(band->_blkVlc._tab->_table, + IVI_VLC_BITS, 1); + if (sym == rvmap->_eobSym) + break; // End of block + + // Escape - run/val explicitly coded using 3 vlc codes + if (sym == rvmap->_escSym) { + run = gb->getVLC2(band->_blkVlc._tab->_table, IVI_VLC_BITS, 1) + 1; + lo = gb->getVLC2(band->_blkVlc._tab->_table, IVI_VLC_BITS, 1); + hi = gb->getVLC2(band->_blkVlc._tab->_table, IVI_VLC_BITS, 1); + // merge them and convert into signed val + val = IVI_TOSIGNED((hi << 6) | lo); + } else { + if (sym >= 256U) { + warning("Invalid sym encountered"); + return -1; + } + run = rvmap->_runtab[sym]; + val = rvmap->_valtab[sym]; + } + + // de-zigzag and dequantize + scanPos += run; + if (scanPos >= numCoeffs || scanPos < 0) + break; + pos = band->_scan[scanPos]; + + if (!val) + warning("Val = 0 encountered!"); + + q = (baseTab[pos] * quant) >> 9; + if (q > 1) + val = val * q + FFSIGN(val) * (((q ^ 1) - 1) >> 1); + trvec[pos] = val; + // track columns containing non-zero coeffs + colFlags[pos & colMask] |= !!val; + } + + if (scanPos < 0 || (scanPos >= numCoeffs && sym != rvmap->_eobSym)) + return -1; // corrupt block data + + // undoing DC coeff prediction for intra-blocks + if (isIntra && band->_is2dTrans) { + *prevDc += trvec[0]; + trvec[0] = *prevDc; + colFlags[0] |= !!*prevDc; + } + + if (band->_transformSize > band->_blkSize) { + warning("Too large transform"); + return -1; + } + + // apply inverse transform + band->_invTransform(trvec, band->_buf + offs, + band->_pitch, colFlags); + + // apply motion compensation + if (!isIntra) + return iviMc(band, mc, mcAvg, offs, mvX, mvY, mvX2, mvY2, + mcType, mcType2); + + return 0; +} + +int IndeoDecoderBase::ivi_dc_transform(IVIBandDesc *band, int *prevDc, + int bufOffs, int blkSize) { + int bufSize = band->_pitch * band->_aHeight - bufOffs; + int minSize = (blkSize - 1) * band->_pitch + blkSize; + + if (minSize > bufSize) + return -1; + + band->_dcTransform(prevDc, band->_buf + bufOffs, + band->_pitch, blkSize); + + return 0; +} + +/*------------------------------------------------------------------------*/ + +const uint8 IndeoDecoderBase::_ffIviVerticalScan8x8[64] = { + 0, 8, 16, 24, 32, 40, 48, 56, + 1, 9, 17, 25, 33, 41, 49, 57, + 2, 10, 18, 26, 34, 42, 50, 58, + 3, 11, 19, 27, 35, 43, 51, 59, + 4, 12, 20, 28, 36, 44, 52, 60, + 5, 13, 21, 29, 37, 45, 53, 61, + 6, 14, 22, 30, 38, 46, 54, 62, + 7, 15, 23, 31, 39, 47, 55, 63 +}; + +const uint8 IndeoDecoderBase::_ffIviHorizontalScan8x8[64] = { + 0, 1, 2, 3, 4, 5, 6, 7, + 8, 9, 10, 11, 12, 13, 14, 15, + 16, 17, 18, 19, 20, 21, 22, 23, + 24, 25, 26, 27, 28, 29, 30, 31, + 32, 33, 34, 35, 36, 37, 38, 39, + 40, 41, 42, 43, 44, 45, 46, 47, + 48, 49, 50, 51, 52, 53, 54, 55, + 56, 57, 58, 59, 60, 61, 62, 63 +}; + +const uint8 IndeoDecoderBase::_ffIviDirectScan4x4[16] = { + 0, 1, 4, 8, 5, 2, 3, 6, 9, 12, 13, 10, 7, 11, 14, 15 +}; + +const RVMapDesc IVI45DecContext::_ff_ivi_rvmap_tabs[9] = { +{ // MapTab0 + 5, // _eobSym + 2, // _escSym + // run table + {1, 1, 0, 1, 1, 0, 1, 1, 2, 2, 1, 1, 1, 1, 3, 3, + 1, 1, 2, 2, 1, 1, 4, 4, 1, 1, 1, 1, 2, 2, 5, 5, + 1, 1, 3, 3, 1, 1, 6, 6, 1, 2, 1, 2, 7, 7, 1, 1, + 8, 8, 1, 1, 4, 2, 1, 4, 2, 1, 3, 3, 1, 1, 1, 9, + 9, 1, 2, 1, 2, 1, 5, 5, 1, 1, 10, 10, 1, 1, 3, 3, + 2, 2, 1, 1, 11, 11, 6, 4, 4, 1, 6, 1, 2, 1, 2, 12, + 8, 1, 12, 7, 8, 7, 1, 16, 1, 16, 1, 3, 3, 13, 1, 13, + 2, 2, 1, 15, 1, 5, 14, 15, 1, 5, 14, 1, 17, 8, 17, 8, + 1, 4, 4, 2, 2, 1, 25, 25, 24, 24, 1, 3, 1, 3, 1, 8, + 6, 7, 6, 1, 18, 8, 18, 1, 7, 23, 2, 2, 23, 1, 1, 21, + 22, 9, 9, 22, 19, 1, 21, 5, 19, 5, 1, 33, 20, 33, 20, 8, + 4, 4, 1, 32, 2, 2, 8, 3, 32, 26, 3, 1, 7, 7, 26, 6, + 1, 6, 1, 1, 16, 1, 10, 1, 10, 2, 16, 29, 28, 2, 29, 28, + 1, 27, 5, 8, 5, 27, 1, 8, 3, 7, 3, 31, 41, 31, 1, 41, + 6, 1, 6, 7, 4, 4, 1, 1, 2, 1, 2, 11, 34, 30, 11, 1, + 30, 15, 15, 34, 36, 40, 36, 40, 35, 35, 37, 37, 39, 39, 38, 38}, + + // value table + { 1, -1, 0, 2, -2, 0, 3, -3, 1, -1, 4, -4, 5, -5, 1, -1, + 6, -6, 2, -2, 7, -7, 1, -1, 8, -8, 9, -9, 3, -3, 1, -1, + 10, -10, 2, -2, 11, -11, 1, -1, 12, 4, -12, -4, 1, -1, 13, -13, + 1, -1, 14, -14, 2, 5, 15, -2, -5, -15, -3, 3, 16, -16, 17, 1, + -1, -17, 6, 18, -6, -18, 2, -2, 19, -19, 1, -1, 20, -20, 4, -4, + 7, -7, 21, -21, 1, -1, 2, 3, -3, 22, -2, -22, 8, 23, -8, 1, + 2, -23, -1, 2, -2, -2, 24, 1, -24, -1, 25, 5, -5, 1, -25, -1, + 9, -9, 26, 1, -26, 3, 1, -1, 27, -3, -1, -27, 1, 3, -1, -3, + 28, -4, 4, 10, -10, -28, 1, -1, 1, -1, 29, 6, -29, -6, 30, -4, + 3, 3, -3, -30, 1, 4, -1, 31, -3, 1, 11, -11, -1, -31, 32, -1, + -1, 2, -2, 1, 1, -32, 1, 4, -1, -4, 33, -1, 1, 1, -1, 5, + 5, -5, -33, -1, -12, 12, -5, -7, 1, 1, 7, 34, 4, -4, -1, 4, + -34, -4, 35, 36, -2, -35, -2, -36, 2, 13, 2, -1, 1, -13, 1, -1, + 37, 1, -5, 6, 5, -1, 38, -6, -8, 5, 8, -1, 1, 1, -37, -1, + 5, 39, -5, -5, 6, -6, -38, -39, -14, 40, 14, 2, 1, 1, -2, -40, + -1, -2, 2, -1, -1, -1, 1, 1, 1, -1, 1, -1, 1, -1, 1, -1} +},{ + // MapTab1 + 0, // _eobSym + 38, // _escSym + // run table + {0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 8, 6, 8, 7, + 7, 9, 9, 10, 10, 11, 11, 1, 12, 1, 12, 13, 13, 16, 14, 16, + 14, 15, 15, 17, 17, 18, 0, 18, 19, 20, 21, 19, 22, 21, 20, 22, + 25, 24, 2, 25, 24, 23, 23, 2, 26, 28, 26, 28, 29, 27, 29, 27, + 33, 33, 1, 32, 1, 3, 32, 30, 36, 3, 36, 30, 31, 31, 35, 34, + 37, 41, 34, 35, 37, 4, 41, 4, 49, 8, 8, 49, 40, 38, 5, 38, + 40, 39, 5, 39, 42, 43, 42, 7, 57, 6, 43, 44, 6, 50, 7, 44, + 57, 48, 50, 48, 45, 45, 46, 47, 51, 46, 47, 58, 1, 51, 58, 1, + 52, 59, 53, 9, 52, 55, 55, 59, 53, 56, 54, 56, 54, 9, 64, 64, + 60, 63, 60, 63, 61, 62, 61, 62, 2, 10, 2, 10, 11, 1, 11, 13, + 12, 1, 12, 13, 16, 16, 8, 8, 14, 3, 3, 15, 14, 15, 4, 4, + 1, 17, 17, 5, 1, 7, 7, 5, 6, 1, 2, 2, 6, 22, 1, 25, + 21, 22, 8, 24, 1, 21, 25, 24, 8, 18, 18, 23, 9, 20, 23, 33, + 29, 33, 20, 1, 19, 1, 29, 36, 9, 36, 19, 41, 28, 57, 32, 3, + 28, 3, 1, 27, 49, 49, 1, 32, 26, 26, 2, 4, 4, 7, 57, 41, + 2, 7, 10, 5, 37, 16, 10, 27, 8, 8, 13, 16, 37, 13, 1, 5}, + + // value table + {0, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, 1, -1, -1, 1, + -1, 1, -1, 1, -1, 1, -1, 2, 1, -2, -1, 1, -1, 1, 1, -1, + -1, 1, -1, 1, -1, 1, 0, -1, 1, 1, 1, -1, 1, -1, -1, -1, + 1, 1, 2, -1, -1, 1, -1, -2, 1, 1, -1, -1, 1, 1, -1, -1, + 1, -1, 3, 1, -3, 2, -1, 1, 1, -2, -1, -1, -1, 1, 1, 1, + 1, 1, -1, -1, -1, 2, -1, -2, 1, 2, -2, -1, 1, 1, 2, -1, + -1, 1, -2, -1, 1, 1, -1, 2, 1, 2, -1, 1, -2, -1, -2, -1, + -1, 1, 1, -1, 1, -1, 1, 1, 1, -1, -1, 1, 4, -1, -1, -4, + 1, 1, 1, 2, -1, -1, 1, -1, -1, 1, -1, -1, 1, -2, 1, -1, + 1, 1, -1, -1, 1, 1, -1, -1, 3, 2, -3, -2, 2, 5, -2, 2, + 2, -5, -2, -2, -2, 2, -3, 3, 2, 3, -3, 2, -2, -2, 3, -3, + 6, 2, -2, 3, -6, 3, -3, -3, 3, 7, -4, 4, -3, 2, -7, 2, + 2, -2, -4, 2, 8, -2, -2, -2, 4, 2, -2, 2, 3, 2, -2, -2, + 2, 2, -2, -8, -2, 9, -2, 2, -3, -2, 2, -2, 2, 2, 2, 4, + -2, -4, 10, 2, 2, -2, -9, -2, 2, -2, 5, 4, -4, 4, -2, 2, + -5, -4, -3, 4, 2, -3, 3, -2, -5, 5, 3, 3, -2, -3, -10, -4} +},{ + // MapTab2 + 2, // _eobSym + 11, // _escSym + // run table + {1, 1, 0, 2, 2, 1, 1, 3, 3, 4, 4, 0, 1, 1, 5, 5, + 2, 2, 6, 6, 7, 7, 1, 8, 1, 8, 3, 3, 9, 9, 1, 2, + 2, 1, 4, 10, 4, 10, 11, 11, 1, 5, 12, 12, 1, 5, 13, 13, + 3, 3, 6, 6, 2, 2, 14, 14, 16, 16, 15, 7, 15, 8, 8, 7, + 1, 1, 17, 17, 4, 4, 1, 1, 18, 18, 2, 2, 5, 5, 25, 3, + 9, 3, 25, 9, 19, 24, 19, 24, 1, 21, 20, 1, 21, 22, 20, 22, + 23, 23, 8, 6, 33, 6, 8, 33, 7, 7, 26, 26, 1, 32, 1, 32, + 28, 4, 28, 10, 29, 27, 27, 10, 41, 4, 29, 2, 2, 41, 36, 31, + 49, 31, 34, 30, 34, 36, 30, 35, 1, 49, 11, 5, 35, 11, 1, 3, + 3, 5, 37, 37, 8, 40, 8, 40, 12, 12, 42, 42, 1, 38, 16, 57, + 1, 6, 16, 39, 38, 6, 7, 7, 13, 13, 39, 43, 2, 43, 57, 2, + 50, 9, 44, 9, 50, 4, 15, 48, 44, 4, 1, 15, 48, 14, 14, 1, + 45, 45, 8, 3, 5, 8, 51, 47, 3, 46, 46, 47, 5, 51, 1, 17, + 17, 58, 1, 58, 2, 52, 52, 2, 53, 7, 59, 6, 6, 56, 53, 55, + 7, 55, 1, 54, 59, 56, 54, 10, 1, 10, 4, 60, 1, 60, 8, 4, + 8, 64, 64, 61, 1, 63, 3, 63, 62, 61, 5, 11, 5, 3, 11, 62}, + + // value table + { 1, -1, 0, 1, -1, 2, -2, 1, -1, 1, -1, 0, 3, -3, 1, -1, + 2, -2, 1, -1, 1, -1, 4, 1, -4, -1, 2, -2, 1, -1, 5, 3, + -3, -5, 2, 1, -2, -1, 1, -1, 6, 2, 1, -1, -6, -2, 1, -1, + 3, -3, 2, -2, 4, -4, 1, -1, 1, -1, 1, 2, -1, 2, -2, -2, + 7, -7, 1, -1, 3, -3, 8, -8, 1, -1, 5, -5, 3, -3, 1, 4, + 2, -4, -1, -2, 1, 1, -1, -1, 9, 1, 1, -9, -1, 1, -1, -1, + 1, -1, 3, -3, 1, 3, -3, -1, 3, -3, 1, -1, 10, 1, -10, -1, + 1, 4, -1, 2, 1, -1, 1, -2, 1, -4, -1, 6, -6, -1, 1, 1, + 1, -1, 1, 1, -1, -1, -1, 1, 11, -1, -2, 4, -1, 2, -11, 5, + -5, -4, -1, 1, 4, 1, -4, -1, -2, 2, 1, -1, 12, 1, -2, 1, + -12, 4, 2, 1, -1, -4, 4, -4, 2, -2, -1, 1, 7, -1, -1, -7, + -1, -3, 1, 3, 1, 5, 2, 1, -1, -5, 13, -2, -1, 2, -2, -13, + 1, -1, 5, 6, 5, -5, 1, 1, -6, 1, -1, -1, -5, -1, 14, 2, + -2, 1, -14, -1, 8, 1, -1, -8, 1, 5, 1, 5, -5, 1, -1, 1, + -5, -1, 15, 1, -1, -1, -1, 3, -15, -3, 6, 1, 16, -1, 6, -6, + -6, 1, -1, 1, -16, 1, 7, -1, 1, -1, -6, -3, 6, -7, 3, -1} +},{ + // MapTab3 + 0, // _eobSym + 35, // _escSym + // run table + {0, 1, 1, 2, 2, 3, 3, 4, 4, 1, 1, 5, 5, 6, 6, 7, + 7, 8, 8, 9, 9, 2, 2, 10, 10, 1, 1, 11, 11, 12, 12, 3, + 3, 13, 13, 0, 14, 14, 16, 15, 16, 15, 4, 4, 17, 1, 17, 1, + 5, 5, 18, 18, 2, 2, 6, 6, 8, 19, 7, 8, 7, 19, 20, 20, + 21, 21, 22, 24, 22, 24, 23, 23, 1, 1, 25, 25, 3, 3, 26, 26, + 9, 9, 27, 27, 28, 28, 33, 29, 4, 33, 29, 1, 4, 1, 32, 32, + 2, 2, 31, 10, 30, 10, 30, 31, 34, 34, 5, 5, 36, 36, 35, 41, + 35, 11, 41, 11, 37, 1, 8, 8, 37, 6, 1, 6, 40, 7, 7, 40, + 12, 38, 12, 39, 39, 38, 49, 13, 49, 13, 3, 42, 3, 42, 16, 16, + 43, 43, 14, 14, 1, 1, 44, 15, 44, 15, 2, 2, 57, 48, 50, 48, + 57, 50, 4, 45, 45, 4, 46, 47, 47, 46, 1, 51, 1, 17, 17, 51, + 8, 9, 9, 5, 58, 8, 58, 5, 52, 52, 55, 56, 53, 56, 55, 59, + 59, 53, 54, 1, 6, 54, 7, 7, 6, 1, 2, 3, 2, 3, 64, 60, + 60, 10, 10, 64, 61, 62, 61, 63, 1, 63, 62, 1, 18, 24, 18, 4, + 25, 4, 8, 21, 21, 1, 24, 22, 25, 22, 8, 11, 19, 11, 23, 1, + 20, 23, 19, 20, 5, 12, 5, 1, 16, 2, 12, 13, 2, 13, 1, 16}, + + // value table + { 0, 1, -1, 1, -1, 1, -1, 1, -1, 2, -2, 1, -1, 1, -1, 1, + -1, 1, -1, 1, -1, 2, -2, 1, -1, 3, -3, 1, -1, 1, -1, 2, + -2, 1, -1, 0, 1, -1, 1, 1, -1, -1, 2, -2, 1, 4, -1, -4, + 2, -2, 1, -1, -3, 3, 2, -2, 2, 1, 2, -2, -2, -1, 1, -1, + 1, -1, 1, 1, -1, -1, 1, -1, 5, -5, 1, -1, 3, -3, 1, -1, + 2, -2, 1, -1, 1, -1, 1, 1, 3, -1, -1, 6, -3, -6, -1, 1, + 4, -4, 1, 2, 1, -2, -1, -1, 1, -1, 3, -3, 1, -1, 1, 1, + -1, 2, -1, -2, 1, 7, -3, 3, -1, 3, -7, -3, 1, -3, 3, -1, + 2, 1, -2, 1, -1, -1, 1, 2, -1, -2, -4, -1, 4, 1, 2, -2, + 1, -1, -2, 2, 8, -8, -1, 2, 1, -2, -5, 5, 1, -1, -1, 1, + -1, 1, 4, -1, 1, -4, -1, -1, 1, 1, 9, 1, -9, 2, -2, -1, + -4, 3, -3, -4, -1, 4, 1, 4, 1, -1, 1, -1, 1, 1, -1, 1, + -1, -1, -1, 10, 4, 1, 4, -4, -4, -10, 6, 5, -6, -5, 1, -1, + 1, 3, -3, -1, 1, -1, -1, -1, 11, 1, 1, -11, -2, -2, 2, 5, + -2, -5, -5, 2, -2, 12, 2, -2, 2, 2, 5, -3, -2, 3, -2, -12, + -2, 2, 2, 2, -5, 3, 5, 13, -3, 7, -3, -3, -7, 3, -13, 3} +},{ + // MapTab4 + 0, // _eobSym + 34, // _escSym + // run table + {0, 1, 1, 1, 2, 2, 1, 3, 3, 1, 1, 1, 4, 4, 1, 5, + 2, 1, 5, 2, 1, 1, 6, 6, 1, 1, 1, 1, 1, 7, 3, 1, + 2, 3, 0, 1, 2, 7, 1, 1, 1, 8, 1, 1, 8, 1, 1, 1, + 9, 1, 9, 1, 2, 1, 1, 2, 1, 1, 10, 4, 1, 10, 1, 4, + 1, 1, 1, 1, 1, 3, 1, 1, 1, 3, 2, 1, 5, 1, 1, 1, + 2, 5, 1, 11, 1, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 2, 1, 6, 1, 6, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 12, + 3, 1, 12, 1, 1, 1, 2, 1, 1, 3, 1, 1, 1, 1, 1, 1, + 4, 1, 1, 1, 2, 1, 1, 4, 1, 1, 1, 1, 1, 1, 2, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 2, 1, 1, 5, + 1, 1, 1, 1, 1, 7, 1, 7, 1, 1, 2, 3, 1, 1, 1, 1, + 5, 1, 1, 1, 1, 1, 1, 2, 13, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 13, 2, 1, 1, 4, 1, 1, 1, + 3, 1, 6, 1, 1, 1, 14, 1, 1, 1, 1, 1, 14, 6, 1, 1, + 1, 1, 15, 2, 4, 1, 2, 3, 15, 1, 1, 1, 8, 1, 1, 8, + 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1}, + + // value table + { 0, 1, -1, 2, 1, -1, -2, 1, -1, 3, -3, 4, 1, -1, -4, 1, + 2, 5, -1, -2, -5, 6, 1, -1, -6, 7, -7, 8, -8, 1, 2, 9, + 3, -2, 0, -9, -3, -1, 10, -10, 11, 1, -11, 12, -1, -12, 13, -13, + 1, 14, -1, -14, 4, 15, -15, -4, 16, -16, 1, 2, 17, -1, -17, -2, + 18, -18, 19, -19, 20, 3, -20, 21, -21, -3, 5, 22, 2, -22, -23, 23, + -5, -2, 24, 1, -24, -1, 25, -25, 26, -26, -27, 27, 28, 29, -28, -29, + 6, 30, 2, -31, -2, -30, 31, -6, -32, 32, 33, -33, 34, -35, -34, 1, + 4, -36, -1, 35, 37, 36, 7, -37, 38, -4, -38, 39, 41, 40, -40, -39, + 3, 42, -43, -41, -7, -42, 43, -3, 44, -44, 45, -45, 46, 47, 8, -47, + -48, -46, 50, -50, 48, 49, 51, -49, 52, -52, 5, -51, -8, -53, 53, 3, + -56, 56, 55, 54, -54, 2, 60, -2, -55, 58, 9, -5, 59, 57, -57, -63, + -3, -58, -60, -61, 61, -59, -62, -9, 1, 64, 62, 69, -64, 63, 65, -67, + -68, 66, -65, 68, -66, -69, 67, -70, -1, 10, 71, -71, 4, 73, 72, 70, + 6, -76, -3, 74, -78, -74, 1, 78, 80, -72, -75, 76, -1, 3, -73, 79, + 75, 77, 1, 11, -4, -79, -10, -6, -1, -77, -83, -80, 2, 81, -84, -2, + 83, -81, 82, -82, 84, -87, -86, 85, -11, -85, 86, -89, 87, -88, 88, 89} +},{ + // MapTab5 + 2, // _eobSym + 33, // _escSym + // run table + {1, 1, 0, 2, 1, 2, 1, 3, 3, 1, 1, 4, 4, 2, 2, 1, + 1, 5, 5, 6, 1, 6, 1, 7, 7, 3, 3, 2, 8, 2, 8, 1, + 1, 0, 9, 9, 1, 1, 10, 4, 10, 4, 11, 11, 2, 1, 2, 1, + 12, 12, 3, 3, 1, 1, 13, 5, 5, 13, 14, 1, 1, 14, 2, 2, + 6, 6, 15, 1, 1, 15, 16, 4, 7, 16, 4, 7, 1, 1, 3, 3, + 8, 8, 2, 2, 1, 1, 17, 17, 1, 1, 18, 18, 5, 5, 2, 2, + 1, 1, 9, 19, 9, 19, 20, 3, 3, 20, 1, 10, 21, 1, 10, 4, + 4, 21, 22, 6, 6, 22, 1, 1, 23, 24, 2, 2, 23, 24, 11, 1, + 1, 11, 7, 25, 7, 1, 1, 25, 8, 8, 3, 26, 3, 1, 12, 2, + 2, 26, 1, 12, 5, 5, 27, 4, 1, 4, 1, 27, 28, 1, 28, 13, + 1, 13, 2, 29, 2, 1, 32, 6, 1, 30, 14, 29, 14, 6, 3, 31, + 3, 1, 30, 1, 32, 31, 33, 9, 33, 1, 1, 7, 9, 7, 2, 2, + 1, 1, 4, 36, 34, 4, 5, 10, 10, 5, 34, 1, 1, 35, 8, 8, + 36, 3, 35, 1, 15, 3, 2, 1, 16, 15, 16, 2, 37, 1, 37, 1, + 1, 1, 6, 6, 38, 1, 38, 11, 1, 39, 39, 40, 11, 2, 41, 4, + 40, 1, 2, 4, 1, 1, 1, 41, 3, 1, 3, 1, 5, 7, 5, 7}, + + // value table + { 1, -1, 0, 1, 2, -1, -2, 1, -1, 3, -3, 1, -1, 2, -2, 4, + -4, 1, -1, 1, 5, -1, -5, 1, -1, 2, -2, 3, 1, -3, -1, 6, + -6, 0, 1, -1, 7, -7, 1, 2, -1, -2, 1, -1, 4, 8, -4, -8, + 1, -1, 3, -3, 9, -9, 1, 2, -2, -1, 1, 10, -10, -1, 5, -5, + 2, -2, 1, 11, -11, -1, 1, 3, 2, -1, -3, -2, 12, -12, 4, -4, + 2, -2, -6, 6, 13, -13, 1, -1, 14, -14, 1, -1, 3, -3, 7, -7, + 15, -15, 2, 1, -2, -1, 1, 5, -5, -1, -16, 2, 1, 16, -2, 4, + -4, -1, 1, 3, -3, -1, 17, -17, 1, 1, -8, 8, -1, -1, 2, 18, + -18, -2, 3, 1, -3, 19, -19, -1, 3, -3, 6, 1, -6, 20, 2, 9, + -9, -1, -20, -2, 4, -4, 1, -5, 21, 5, -21, -1, 1, -22, -1, 2, + 22, -2, 10, 1, -10, 23, 1, 4, -23, 1, 2, -1, -2, -4, -7, 1, + 7, -24, -1, 24, -1, -1, 1, 3, -1, -25, 25, 4, -3, -4, 11, -11, + 26, -26, 6, 1, 1, -6, -5, -3, 3, 5, -1, -27, 27, 1, 4, -4, + -1, -8, -1, 28, 2, 8, -12, -28, -2, -2, 2, 12, -1, 29, 1, -29, + 30, -30, 5, -5, 1, -31, -1, 3, 31, -1, 1, 1, -3, -13, 1, -7, + -1, -32, 13, 7, 32, 33, -33, -1, -9, -34, 9, 34, -6, 5, 6, -5} +},{ + // MapTab6 + 2, // _eobSym + 13, // _escSym + // run table + {1, 1, 0, 1, 1, 2, 2, 1, 1, 3, 3, 1, 1, 0, 2, 2, + 4, 1, 4, 1, 1, 1, 5, 5, 1, 1, 6, 6, 2, 2, 1, 1, + 3, 3, 7, 7, 1, 1, 8, 8, 1, 1, 2, 2, 1, 9, 1, 9, + 4, 4, 10, 1, 1, 10, 1, 1, 11, 11, 3, 3, 1, 2, 1, 2, + 1, 1, 12, 12, 5, 5, 1, 1, 13, 1, 1, 13, 2, 2, 1, 1, + 6, 6, 1, 1, 4, 14, 4, 14, 3, 1, 3, 1, 1, 1, 15, 7, + 15, 2, 2, 7, 1, 1, 1, 8, 1, 8, 16, 16, 1, 1, 1, 1, + 2, 1, 1, 2, 1, 1, 3, 5, 5, 3, 4, 1, 1, 4, 1, 1, + 17, 17, 9, 1, 1, 9, 2, 2, 1, 1, 10, 10, 1, 6, 1, 1, + 6, 18, 1, 1, 18, 1, 1, 1, 2, 2, 3, 1, 3, 1, 1, 1, + 4, 1, 19, 1, 19, 7, 1, 1, 20, 1, 4, 20, 1, 7, 11, 2, + 1, 11, 21, 2, 8, 5, 1, 8, 1, 5, 21, 1, 1, 1, 22, 1, + 1, 22, 1, 1, 3, 3, 1, 23, 2, 12, 24, 1, 1, 2, 1, 1, + 12, 23, 1, 1, 24, 1, 1, 1, 4, 1, 1, 1, 2, 1, 6, 6, + 4, 2, 1, 1, 1, 1, 1, 1, 1, 14, 13, 3, 1, 25, 9, 25, + 14, 1, 9, 3, 13, 1, 1, 1, 1, 1, 10, 1, 1, 2, 10, 2}, + + // value table + {-20, -1, 0, 2, -2, 1, -1, 3, -3, 1, -1, 4, -4, 0, 2, -2, + 1, 5, -1, -5, 6, -6, 1, -1, 7, -7, 1, -1, 3, -3, 8, -8, + 2, -2, 1, -1, 9, -9, 1, -1, 10, -10, 4, -4, 11, 1, -11, -1, + 2, -2, 1, 12, -12, -1, 13, -13, 1, -1, 3, -3, 14, 5, -14, -5, + -15, 15, -1, 1, 2, -2, 16, -16, 1, 17, -17, -1, 6, -6, 18, -18, + 2, -2, -19, 19, -3, 1, 3, -1, 4, 20, -4, 1, -21, 21, 1, 2, + -1, -7, 7, -2, 22, -22, 23, 2, -23, -2, 1, -1, -24, 24, -25, 25, + -8, -26, 26, 8, -27, 27, 5, 3, -3, -5, -4, 28, -28, 4, 29, -29, + 1, -1, -2, -30, 30, 2, 9, -9, -31, 31, 2, -2, -32, 3, 32, -33, + -3, 1, 33, -34, -1, 34, -35, 35, -10, 10, -6, 36, 6, -36, 37, -37, + -5, 38, 1, -38, -1, 3, 39, -39, -1, 40, 5, 1, -40, -3, 2, -11, + -41, -2, 1, 11, -3, -4, 41, 3, 42, 4, -1, -43, -42, 43, 1, -44, + 45, -1, 44, -45, -7, 7, -46, 1, -12, 2, 1, -47, 46, 12, 47, 48, + -2, -1, -48, 49, -1, -50, -49, 50, -6, -51, 51, 52, -13, 53, -4, 4, + 6, 13, -53, -52, -54, 55, 54, -55, -56, -2, 2, -8, 56, 1, -3, -1, + 2, 58, 3, 8, -2, 57, -58, -60, -59, -57, -3, 60, 59, -14, 3, 14} +},{ + // MapTab7 + 2, // _eobSym + 38, // _escSym + // run table + {1, 1, 0, 2, 2, 1, 1, 3, 3, 4, 4, 5, 5, 1, 1, 6, + 6, 2, 2, 7, 7, 8, 8, 1, 1, 3, 3, 9, 9, 10, 10, 1, + 1, 2, 2, 4, 4, 11, 0, 11, 12, 12, 13, 13, 1, 1, 5, 5, + 14, 14, 15, 16, 15, 16, 3, 3, 1, 6, 1, 6, 2, 2, 7, 7, + 8, 8, 17, 17, 1, 1, 4, 4, 18, 18, 2, 2, 1, 19, 1, 20, + 19, 20, 21, 21, 3, 3, 22, 22, 5, 5, 24, 1, 1, 23, 9, 23, + 24, 9, 2, 2, 10, 1, 1, 10, 6, 6, 25, 4, 4, 25, 7, 7, + 26, 8, 1, 8, 3, 1, 26, 3, 11, 11, 27, 27, 2, 28, 1, 2, + 28, 1, 12, 12, 5, 5, 29, 13, 13, 29, 32, 1, 1, 33, 31, 30, + 32, 4, 30, 33, 4, 31, 3, 14, 1, 1, 3, 34, 34, 2, 2, 14, + 6, 6, 35, 36, 35, 36, 1, 15, 1, 16, 16, 15, 7, 9, 7, 9, + 37, 8, 8, 37, 1, 1, 39, 2, 38, 39, 2, 40, 5, 38, 40, 5, + 3, 3, 4, 4, 10, 10, 1, 1, 1, 1, 41, 2, 41, 2, 6, 6, + 1, 1, 11, 42, 11, 43, 3, 42, 3, 17, 4, 43, 1, 17, 7, 1, + 8, 44, 4, 7, 44, 5, 8, 2, 5, 1, 2, 48, 45, 1, 12, 45, + 12, 48, 13, 13, 1, 9, 9, 46, 1, 46, 47, 47, 49, 18, 18, 49}, + + // value table + { 1, -1, 0, 1, -1, 2, -2, 1, -1, 1, -1, 1, -1, 3, -3, 1, + -1, -2, 2, 1, -1, 1, -1, 4, -4, -2, 2, 1, -1, 1, -1, 5, + -5, -3, 3, 2, -2, 1, 0, -1, 1, -1, 1, -1, 6, -6, 2, -2, + 1, -1, 1, 1, -1, -1, -3, 3, 7, 2, -7, -2, -4, 4, 2, -2, + 2, -2, 1, -1, 8, -8, 3, -3, 1, -1, -5, 5, 9, 1, -9, 1, + -1, -1, 1, -1, -4, 4, 1, -1, 3, -3, 1, -10, 10, 1, 2, -1, + -1, -2, 6, -6, 2, 11, -11, -2, 3, -3, 1, -4, 4, -1, 3, -3, + 1, 3, 12, -3, -5, -12, -1, 5, 2, -2, 1, -1, -7, 1, 13, 7, + -1, -13, 2, -2, 4, -4, 1, 2, -2, -1, 1, 14, -14, 1, 1, 1, + -1, -5, -1, -1, 5, -1, -6, 2, -15, 15, 6, 1, -1, -8, 8, -2, + -4, 4, 1, 1, -1, -1, 16, 2, -16, -2, 2, -2, 4, 3, -4, -3, + -1, -4, 4, 1, -17, 17, -1, -9, 1, 1, 9, 1, -5, -1, -1, 5, + -7, 7, 6, -6, 3, -3, 18, -18, 19, -19, 1, -10, -1, 10, -5, 5, + 20, -20, -3, 1, 3, 1, 8, -1, -8, 2, 7, -1, -21, -2, 5, 21, + 5, -1, -7, -5, 1, -6, -5, -11, 6, 22, 11, 1, 1, -22, -3, -1, + 3, -1, 3, -3, -23, 4, -4, 1, 23, -1, 1, -1, 1, -2, 2, -1} +},{ + // MapTab8 + 4, // _eobSym + 11, // _escSym + // run table + {1, 1, 1, 1, 0, 2, 2, 1, 1, 3, 3, 0, 1, 1, 2, 2, + 4, 4, 1, 1, 5, 5, 1, 1, 2, 2, 3, 3, 6, 6, 1, 1, + 7, 7, 8, 1, 8, 2, 2, 1, 4, 4, 1, 3, 1, 3, 9, 9, + 2, 2, 1, 5, 1, 5, 10, 10, 1, 1, 11, 11, 3, 6, 3, 4, + 4, 6, 2, 2, 1, 12, 1, 12, 7, 13, 7, 13, 1, 1, 8, 8, + 2, 2, 14, 14, 16, 15, 16, 5, 5, 1, 3, 15, 1, 3, 4, 4, + 1, 1, 17, 17, 2, 2, 6, 6, 1, 18, 1, 18, 22, 21, 22, 21, + 25, 24, 25, 19, 9, 20, 9, 23, 19, 24, 20, 3, 23, 7, 3, 1, + 1, 7, 28, 26, 29, 5, 28, 26, 5, 8, 29, 4, 8, 27, 2, 2, + 4, 27, 1, 1, 10, 36, 10, 33, 33, 36, 30, 1, 32, 32, 1, 30, + 6, 31, 31, 35, 3, 6, 11, 11, 3, 2, 35, 2, 34, 1, 34, 1, + 37, 37, 12, 7, 12, 5, 41, 5, 4, 7, 1, 8, 13, 4, 1, 41, + 13, 38, 8, 38, 9, 1, 40, 40, 9, 1, 39, 2, 2, 49, 39, 42, + 3, 3, 14, 16, 49, 14, 16, 42, 43, 43, 6, 6, 15, 1, 1, 15, + 44, 44, 1, 1, 50, 48, 4, 5, 4, 7, 5, 2, 10, 10, 48, 7, + 50, 45, 2, 1, 45, 8, 8, 1, 46, 46, 3, 47, 47, 3, 1, 1}, + + // value table + { 1, -1, 2, -2, 0, 1, -1, 3, -3, 1, -1, 0, 4, -4, 2, -2, + 1, -1, 5, -5, 1, -1, 6, -6, 3, -3, 2, -2, 1, -1, 7, -7, + 1, -1, 1, 8, -1, 4, -4, -8, 2, -2, 9, 3, -9, -3, 1, -1, + 5, -5, 10, 2, -10, -2, 1, -1, 11, -11, 1, -1, -4, 2, 4, 3, + -3, -2, 6, -6, 12, 1, -12, -1, 2, 1, -2, -1, 13, -13, 2, -2, + 7, -7, 1, -1, 1, 1, -1, 3, -3, 14, 5, -1, -14, -5, 4, -4, + 15, -15, 1, -1, 8, -8, -3, 3, 16, 1, -16, -1, 1, 1, -1, -1, + 1, 1, -1, 1, 2, 1, -2, 1, -1, -1, -1, 6, -1, 3, -6, 17, + -17, -3, 1, 1, 1, 4, -1, -1, -4, 3, -1, 5, -3, -1, -9, 9, + -5, 1, 18, -18, 2, 1, -2, 1, -1, -1, 1, 19, -1, 1, -19, -1, + 4, 1, -1, 1, 7, -4, -2, 2, -7, 10, -1, -10, 1, 20, -1, -20, + 1, -1, 2, 4, -2, 5, 1, -5, 6, -4, 21, 4, 2, -6, -21, -1, + -2, 1, -4, -1, -3, 22, -1, 1, 3, -22, -1, 11, -11, 1, 1, 1, + 8, -8, 2, 2, -1, -2, -2, -1, 1, -1, -5, 5, 2, 23, -23, -2, + 1, -1, 24, -24, -1, -1, 7, 6, -7, 5, -6, 12, -3, 3, 1, -5, + 1, 1, -12, 25, -1, -5, 5, -25, -1, 1, 9, 1, -1, -9, 26, -26} +} +}; + +} // End of namespace Indeo +} // End of namespace Image |