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01910ca603
Fixes: use of uninitialized value Fixes: 71228/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VC1IMAGE_fuzzer-6188476880453632 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
3024 lines
116 KiB
C
3024 lines
116 KiB
C
/*
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* VC-1 and WMV3 decoder
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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 block decoding routines
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*/
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#include "avcodec.h"
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#include "mpegutils.h"
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#include "mpegvideo.h"
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#include "mpegvideodec.h"
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#include "msmpeg4_vc1_data.h"
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#include "unary.h"
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#include "vc1.h"
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#include "vc1_pred.h"
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#include "vc1acdata.h"
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#include "vc1data.h"
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// offset tables for interlaced picture MVDATA decoding
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static const uint8_t offset_table[2][9] = {
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{ 0, 1, 2, 4, 8, 16, 32, 64, 128 },
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{ 0, 1, 3, 7, 15, 31, 63, 127, 255 },
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};
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// mapping table for internal block representation
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static const int block_map[6] = {0, 2, 1, 3, 4, 5};
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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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static inline void init_block_index(VC1Context *v)
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{
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MpegEncContext *s = &v->s;
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ff_init_block_index(s);
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if (v->field_mode && !(v->second_field ^ v->tff)) {
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s->dest[0] += s->cur_pic.ptr->f->linesize[0];
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s->dest[1] += s->cur_pic.ptr->f->linesize[1];
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s->dest[2] += s->cur_pic.ptr->f->linesize[2];
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}
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}
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static inline void update_block_index(MpegEncContext *s)
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{
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/* VC1 is always 420 except when using AV_CODEC_FLAG_GRAY
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* (or a HWAccel). Shall we inline this value? */
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ff_update_block_index(s, 8, 0, s->chroma_x_shift);
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}
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/** @} */ //Bitplane group
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static void vc1_put_blocks_clamped(VC1Context *v, int put_signed)
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{
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MpegEncContext *s = &v->s;
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uint8_t *dest;
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int block_count = CONFIG_GRAY && (s->avctx->flags & AV_CODEC_FLAG_GRAY) ? 4 : 6;
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int fieldtx = 0;
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int i;
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/* The put pixels loop is one MB row and one MB column behind the decoding
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* loop because we can only put pixels when overlap filtering is done. For
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* interlaced frame pictures, however, the put pixels loop is only one
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* column behind the decoding loop as interlaced frame pictures only need
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* horizontal overlap filtering. */
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if (!s->first_slice_line && v->fcm != ILACE_FRAME) {
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if (s->mb_x) {
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for (i = 0; i < block_count; i++) {
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if (i > 3 ? v->mb_type[0][s->block_index[i] - s->block_wrap[i] - 1] :
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v->mb_type[0][s->block_index[i] - 2 * s->block_wrap[i] - 2]) {
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dest = s->dest[0] + ((i & 2) - 4) * 4 * s->linesize + ((i & 1) - 2) * 8;
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if (put_signed)
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s->idsp.put_signed_pixels_clamped(v->block[v->topleft_blk_idx][block_map[i]],
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i > 3 ? s->dest[i - 3] - 8 * s->uvlinesize - 8 : dest,
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i > 3 ? s->uvlinesize : s->linesize);
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else
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s->idsp.put_pixels_clamped(v->block[v->topleft_blk_idx][block_map[i]],
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i > 3 ? s->dest[i - 3] - 8 * s->uvlinesize - 8 : dest,
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i > 3 ? s->uvlinesize : s->linesize);
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}
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}
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}
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if (s->mb_x == v->end_mb_x - 1) {
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for (i = 0; i < block_count; i++) {
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if (i > 3 ? v->mb_type[0][s->block_index[i] - s->block_wrap[i]] :
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v->mb_type[0][s->block_index[i] - 2 * s->block_wrap[i]]) {
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dest = s->dest[0] + ((i & 2) - 4) * 4 * s->linesize + (i & 1) * 8;
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if (put_signed)
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s->idsp.put_signed_pixels_clamped(v->block[v->top_blk_idx][block_map[i]],
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i > 3 ? s->dest[i - 3] - 8 * s->uvlinesize : dest,
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i > 3 ? s->uvlinesize : s->linesize);
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else
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s->idsp.put_pixels_clamped(v->block[v->top_blk_idx][block_map[i]],
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i > 3 ? s->dest[i - 3] - 8 * s->uvlinesize : dest,
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i > 3 ? s->uvlinesize : s->linesize);
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}
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}
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}
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}
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if (s->mb_y == s->end_mb_y - 1 || v->fcm == ILACE_FRAME) {
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if (s->mb_x) {
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if (v->fcm == ILACE_FRAME)
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fieldtx = v->fieldtx_plane[s->mb_y * s->mb_stride + s->mb_x - 1];
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for (i = 0; i < block_count; i++) {
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if (i > 3 ? v->mb_type[0][s->block_index[i] - 1] :
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v->mb_type[0][s->block_index[i] - 2]) {
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if (fieldtx)
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dest = s->dest[0] + ((i & 2) >> 1) * s->linesize + ((i & 1) - 2) * 8;
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else
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dest = s->dest[0] + (i & 2) * 4 * s->linesize + ((i & 1) - 2) * 8;
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if (put_signed)
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s->idsp.put_signed_pixels_clamped(v->block[v->left_blk_idx][block_map[i]],
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i > 3 ? s->dest[i - 3] - 8 : dest,
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i > 3 ? s->uvlinesize : s->linesize << fieldtx);
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else
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s->idsp.put_pixels_clamped(v->block[v->left_blk_idx][block_map[i]],
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i > 3 ? s->dest[i - 3] - 8 : dest,
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i > 3 ? s->uvlinesize : s->linesize << fieldtx);
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}
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}
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}
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if (s->mb_x == v->end_mb_x - 1) {
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if (v->fcm == ILACE_FRAME)
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fieldtx = v->fieldtx_plane[s->mb_y * s->mb_stride + s->mb_x];
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for (i = 0; i < block_count; i++) {
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if (v->mb_type[0][s->block_index[i]]) {
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if (fieldtx)
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dest = s->dest[0] + ((i & 2) >> 1) * s->linesize + (i & 1) * 8;
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else
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dest = s->dest[0] + (i & 2) * 4 * s->linesize + (i & 1) * 8;
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if (put_signed)
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s->idsp.put_signed_pixels_clamped(v->block[v->cur_blk_idx][block_map[i]],
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i > 3 ? s->dest[i - 3] : dest,
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i > 3 ? s->uvlinesize : s->linesize << fieldtx);
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else
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s->idsp.put_pixels_clamped(v->block[v->cur_blk_idx][block_map[i]],
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i > 3 ? s->dest[i - 3] : dest,
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i > 3 ? s->uvlinesize : s->linesize << fieldtx);
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}
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}
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}
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}
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}
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#define inc_blk_idx(idx) do { \
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idx++; \
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if (idx >= v->n_allocated_blks) \
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idx = 0; \
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} while (0)
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/***********************************************************************/
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/**
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* @name VC-1 Block-level functions
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* @see 7.1.4, p91 and 8.1.1.7, p(1)04
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* @{
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*/
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/**
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* @def GET_MQUANT
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* @brief Get macroblock-level quantizer scale
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*/
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#define GET_MQUANT() \
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if (v->dquantfrm) { \
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int edges = 0; \
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if (v->dqprofile == DQPROFILE_ALL_MBS) { \
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if (v->dqbilevel) { \
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mquant = (get_bits1(gb)) ? -v->altpq : v->pq; \
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} else { \
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mqdiff = get_bits(gb, 3); \
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if (mqdiff != 7) \
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mquant = -v->pq - mqdiff; \
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else \
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mquant = -get_bits(gb, 5); \
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} \
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} \
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if (v->dqprofile == DQPROFILE_SINGLE_EDGE) \
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edges = 1 << v->dqsbedge; \
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else if (v->dqprofile == DQPROFILE_DOUBLE_EDGES) \
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edges = (3 << v->dqsbedge) % 15; \
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else if (v->dqprofile == DQPROFILE_FOUR_EDGES) \
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edges = 15; \
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if ((edges&1) && !s->mb_x) \
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mquant = -v->altpq; \
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if ((edges&2) && !s->mb_y) \
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mquant = -v->altpq; \
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if ((edges&4) && s->mb_x == (s->mb_width - 1)) \
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mquant = -v->altpq; \
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if ((edges&8) && \
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s->mb_y == ((s->mb_height >> v->field_mode) - 1)) \
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mquant = -v->altpq; \
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if (!mquant || mquant > 31 || mquant < -31) { \
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av_log(v->s.avctx, AV_LOG_ERROR, \
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"Overriding invalid mquant %d\n", mquant); \
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mquant = 1; \
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} \
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}
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/**
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* @def GET_MVDATA(_dmv_x, _dmv_y)
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* @brief Get MV differentials
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* @see MVDATA decoding from 8.3.5.2, p(1)20
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* @param _dmv_x Horizontal differential for decoded MV
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* @param _dmv_y Vertical differential for decoded MV
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*/
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#define GET_MVDATA(_dmv_x, _dmv_y) \
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index = 1 + get_vlc2(gb, ff_vc1_mv_diff_vlc[s->mv_table_index], \
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VC1_MV_DIFF_VLC_BITS, 2); \
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if (index > 36) { \
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mb_has_coeffs = 1; \
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index -= 37; \
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} else \
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mb_has_coeffs = 0; \
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s->mb_intra = 0; \
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if (!index) { \
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_dmv_x = _dmv_y = 0; \
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} else if (index == 35) { \
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_dmv_x = get_bits(gb, v->k_x - 1 + s->quarter_sample); \
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_dmv_y = get_bits(gb, v->k_y - 1 + s->quarter_sample); \
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} else if (index == 36) { \
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_dmv_x = 0; \
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_dmv_y = 0; \
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s->mb_intra = 1; \
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} else { \
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index1 = index % 6; \
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_dmv_x = offset_table[1][index1]; \
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val = size_table[index1] - (!s->quarter_sample && index1 == 5); \
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if (val > 0) { \
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val = get_bits(gb, val); \
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sign = 0 - (val & 1); \
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_dmv_x = (sign ^ ((val >> 1) + _dmv_x)) - sign; \
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} \
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\
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index1 = index / 6; \
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_dmv_y = offset_table[1][index1]; \
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val = size_table[index1] - (!s->quarter_sample && index1 == 5); \
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if (val > 0) { \
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val = get_bits(gb, val); \
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sign = 0 - (val & 1); \
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_dmv_y = (sign ^ ((val >> 1) + _dmv_y)) - sign; \
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} \
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}
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static av_always_inline void get_mvdata_interlaced(VC1Context *v, int *dmv_x,
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int *dmv_y, int *pred_flag)
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{
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int index, index1;
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int extend_x, extend_y;
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GetBitContext *gb = &v->s.gb;
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int bits, esc;
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int val, sign;
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if (v->numref) {
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bits = VC1_2REF_MVDATA_VLC_BITS;
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esc = 125;
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} else {
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bits = VC1_1REF_MVDATA_VLC_BITS;
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esc = 71;
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}
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extend_x = v->dmvrange & 1;
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extend_y = (v->dmvrange >> 1) & 1;
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index = get_vlc2(gb, v->imv_vlc, bits, 3);
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if (index == esc) {
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*dmv_x = get_bits(gb, v->k_x);
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*dmv_y = get_bits(gb, v->k_y);
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if (v->numref) {
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if (pred_flag)
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*pred_flag = *dmv_y & 1;
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*dmv_y = (*dmv_y + (*dmv_y & 1)) >> 1;
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}
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}
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else {
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av_assert0(index < esc);
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index1 = (index + 1) % 9;
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if (index1 != 0) {
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val = get_bits(gb, index1 + extend_x);
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sign = 0 - (val & 1);
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*dmv_x = (sign ^ ((val >> 1) + offset_table[extend_x][index1])) - sign;
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} else
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*dmv_x = 0;
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index1 = (index + 1) / 9;
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if (index1 > v->numref) {
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val = get_bits(gb, (index1 >> v->numref) + extend_y);
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sign = 0 - (val & 1);
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*dmv_y = (sign ^ ((val >> 1) + offset_table[extend_y][index1 >> v->numref])) - sign;
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} else
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*dmv_y = 0;
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if (v->numref && pred_flag)
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*pred_flag = index1 & 1;
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}
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}
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/** Reconstruct motion vector for B-frame and do motion compensation
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*/
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static inline void vc1_b_mc(VC1Context *v, int dmv_x[2], int dmv_y[2],
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int direct, int mode)
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{
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if (direct) {
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ff_vc1_mc_1mv(v, 0);
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ff_vc1_interp_mc(v);
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return;
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}
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if (mode == BMV_TYPE_INTERPOLATED) {
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ff_vc1_mc_1mv(v, 0);
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ff_vc1_interp_mc(v);
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return;
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}
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ff_vc1_mc_1mv(v, (mode == BMV_TYPE_BACKWARD));
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}
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/** Get predicted DC value for I-frames only
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* prediction dir: left=0, top=1
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* @param s MpegEncContext
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* @param overlap flag indicating that overlap filtering is used
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* @param pq integer part of picture quantizer
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* @param[in] n block index in the current MB
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* @param dc_val_ptr Pointer to DC predictor
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* @param dir_ptr Prediction direction for use in AC prediction
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*/
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static inline int vc1_i_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
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int16_t **dc_val_ptr, int *dir_ptr)
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{
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int a, b, c, wrap, pred, scale;
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int16_t *dc_val;
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static const uint16_t dcpred[32] = {
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-1, 1024, 512, 341, 256, 205, 171, 146, 128,
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114, 102, 93, 85, 79, 73, 68, 64,
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60, 57, 54, 51, 49, 47, 45, 43,
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41, 39, 38, 37, 35, 34, 33
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};
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/* find prediction - wmv3_dc_scale always used here in fact */
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if (n < 4) scale = s->y_dc_scale;
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else scale = s->c_dc_scale;
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wrap = s->block_wrap[n];
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dc_val = s->dc_val[0] + s->block_index[n];
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/* B A
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* C X
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*/
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c = dc_val[ - 1];
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b = dc_val[ - 1 - wrap];
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a = dc_val[ - wrap];
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if (pq < 9 || !overlap) {
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/* Set outer values */
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if (s->first_slice_line && (n != 2 && n != 3))
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b = a = dcpred[scale];
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if (s->mb_x == 0 && (n != 1 && n != 3))
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b = c = dcpred[scale];
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} else {
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/* Set outer values */
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if (s->first_slice_line && (n != 2 && n != 3))
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b = a = 0;
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if (s->mb_x == 0 && (n != 1 && n != 3))
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b = c = 0;
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}
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if (abs(a - b) <= abs(b - c)) {
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pred = c;
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*dir_ptr = 1; // left
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} else {
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pred = a;
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*dir_ptr = 0; // top
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}
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/* update predictor */
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*dc_val_ptr = &dc_val[0];
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return pred;
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}
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/** Get predicted DC value
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* prediction dir: left=0, top=1
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* @param s MpegEncContext
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* @param overlap flag indicating that overlap filtering is used
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* @param pq integer part of picture quantizer
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* @param[in] n block index in the current MB
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* @param a_avail flag indicating top block availability
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* @param c_avail flag indicating left block availability
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* @param dc_val_ptr Pointer to DC predictor
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* @param dir_ptr Prediction direction for use in AC prediction
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*/
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static inline int ff_vc1_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
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int a_avail, int c_avail,
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int16_t **dc_val_ptr, int *dir_ptr)
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{
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int a, b, c, wrap, pred;
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int16_t *dc_val;
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int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
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int q1, q2 = 0;
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int dqscale_index;
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/* scale predictors if needed */
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q1 = FFABS(s->cur_pic.qscale_table[mb_pos]);
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dqscale_index = s->y_dc_scale_table[q1] - 1;
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if (dqscale_index < 0)
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return 0;
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wrap = s->block_wrap[n];
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dc_val = s->dc_val[0] + s->block_index[n];
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/* B A
|
|
* C X
|
|
*/
|
|
c = dc_val[ - 1];
|
|
b = dc_val[ - 1 - wrap];
|
|
a = dc_val[ - wrap];
|
|
|
|
if (c_avail && (n != 1 && n != 3)) {
|
|
q2 = FFABS(s->cur_pic.qscale_table[mb_pos - 1]);
|
|
if (q2 && q2 != q1)
|
|
c = (int)((unsigned)c * s->y_dc_scale_table[q2] * ff_vc1_dqscale[dqscale_index] + 0x20000) >> 18;
|
|
}
|
|
if (a_avail && (n != 2 && n != 3)) {
|
|
q2 = FFABS(s->cur_pic.qscale_table[mb_pos - s->mb_stride]);
|
|
if (q2 && q2 != q1)
|
|
a = (int)((unsigned)a * s->y_dc_scale_table[q2] * ff_vc1_dqscale[dqscale_index] + 0x20000) >> 18;
|
|
}
|
|
if (a_avail && c_avail && (n != 3)) {
|
|
int off = mb_pos;
|
|
if (n != 1)
|
|
off--;
|
|
if (n != 2)
|
|
off -= s->mb_stride;
|
|
q2 = FFABS(s->cur_pic.qscale_table[off]);
|
|
if (q2 && q2 != q1)
|
|
b = (int)((unsigned)b * s->y_dc_scale_table[q2] * ff_vc1_dqscale[dqscale_index] + 0x20000) >> 18;
|
|
}
|
|
|
|
if (c_avail && (!a_avail || abs(a - b) <= abs(b - c))) {
|
|
pred = c;
|
|
*dir_ptr = 1; // left
|
|
} else if (a_avail) {
|
|
pred = a;
|
|
*dir_ptr = 0; // top
|
|
} else {
|
|
pred = 0;
|
|
*dir_ptr = 1; // left
|
|
}
|
|
|
|
/* update predictor */
|
|
*dc_val_ptr = &dc_val[0];
|
|
return pred;
|
|
}
|
|
|
|
/** @} */ // Block group
|
|
|
|
/**
|
|
* @name VC1 Macroblock-level functions in Simple/Main Profiles
|
|
* @see 7.1.4, p91 and 8.1.1.7, p(1)04
|
|
* @{
|
|
*/
|
|
|
|
static inline int vc1_coded_block_pred(MpegEncContext * s, int n,
|
|
uint8_t **coded_block_ptr)
|
|
{
|
|
int xy, wrap, pred, a, b, c;
|
|
|
|
xy = s->block_index[n];
|
|
wrap = s->b8_stride;
|
|
|
|
/* B C
|
|
* A X
|
|
*/
|
|
a = s->coded_block[xy - 1 ];
|
|
b = s->coded_block[xy - 1 - wrap];
|
|
c = s->coded_block[xy - wrap];
|
|
|
|
if (b == c) {
|
|
pred = a;
|
|
} else {
|
|
pred = c;
|
|
}
|
|
|
|
/* store value */
|
|
*coded_block_ptr = &s->coded_block[xy];
|
|
|
|
return pred;
|
|
}
|
|
|
|
/**
|
|
* Decode one AC coefficient
|
|
* @param v The VC1 context
|
|
* @param last Last coefficient
|
|
* @param skip How much zero coefficients to skip
|
|
* @param value Decoded AC coefficient value
|
|
* @param codingset set of VLC to decode data
|
|
* @see 8.1.3.4
|
|
*/
|
|
static int vc1_decode_ac_coeff(VC1Context *v, int *last, int *skip,
|
|
int *value, int codingset)
|
|
{
|
|
GetBitContext *gb = &v->s.gb;
|
|
int index, run, level, lst, sign;
|
|
|
|
index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset], AC_VLC_BITS, 3);
|
|
if (index < 0)
|
|
return index;
|
|
if (index != ff_vc1_ac_sizes[codingset] - 1) {
|
|
run = vc1_index_decode_table[codingset][index][0];
|
|
level = vc1_index_decode_table[codingset][index][1];
|
|
lst = index >= vc1_last_decode_table[codingset] || get_bits_left(gb) < 0;
|
|
sign = get_bits1(gb);
|
|
} else {
|
|
int escape = decode210(gb);
|
|
if (escape != 2) {
|
|
index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset], AC_VLC_BITS, 3);
|
|
if (index >= ff_vc1_ac_sizes[codingset] - 1U)
|
|
return AVERROR_INVALIDDATA;
|
|
run = vc1_index_decode_table[codingset][index][0];
|
|
level = vc1_index_decode_table[codingset][index][1];
|
|
lst = index >= vc1_last_decode_table[codingset];
|
|
if (escape == 0) {
|
|
if (lst)
|
|
level += vc1_last_delta_level_table[codingset][run];
|
|
else
|
|
level += vc1_delta_level_table[codingset][run];
|
|
} else {
|
|
if (lst)
|
|
run += vc1_last_delta_run_table[codingset][level] + 1;
|
|
else
|
|
run += vc1_delta_run_table[codingset][level] + 1;
|
|
}
|
|
sign = get_bits1(gb);
|
|
} else {
|
|
lst = get_bits1(gb);
|
|
if (v->s.esc3_level_length == 0) {
|
|
if (v->pq < 8 || v->dquantfrm) { // table 59
|
|
v->s.esc3_level_length = get_bits(gb, 3);
|
|
if (!v->s.esc3_level_length)
|
|
v->s.esc3_level_length = get_bits(gb, 2) + 8;
|
|
} else { // table 60
|
|
v->s.esc3_level_length = get_unary(gb, 1, 6) + 2;
|
|
}
|
|
v->s.esc3_run_length = 3 + get_bits(gb, 2);
|
|
}
|
|
run = get_bits(gb, v->s.esc3_run_length);
|
|
sign = get_bits1(gb);
|
|
level = get_bits(gb, v->s.esc3_level_length);
|
|
}
|
|
}
|
|
|
|
*last = lst;
|
|
*skip = run;
|
|
*value = (level ^ -sign) + sign;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/** Decode intra block in intra frames - should be faster than decode_intra_block
|
|
* @param v VC1Context
|
|
* @param block block to decode
|
|
* @param[in] n subblock index
|
|
* @param coded are AC coeffs present or not
|
|
* @param codingset set of VLC to decode data
|
|
*/
|
|
static int vc1_decode_i_block(VC1Context *v, int16_t block[64], int n,
|
|
int coded, int codingset)
|
|
{
|
|
GetBitContext *gb = &v->s.gb;
|
|
MpegEncContext *s = &v->s;
|
|
int dc_pred_dir = 0; /* Direction of the DC prediction used */
|
|
int i;
|
|
int16_t *dc_val;
|
|
int16_t *ac_val, *ac_val2;
|
|
int dcdiff, scale;
|
|
|
|
/* Get DC differential */
|
|
dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_vlc[s->dc_table_index][n >= 4],
|
|
MSMP4_DC_VLC_BITS, 3);
|
|
if (dcdiff) {
|
|
const int m = (v->pq == 1 || v->pq == 2) ? 3 - v->pq : 0;
|
|
if (dcdiff == 119 /* ESC index value */) {
|
|
dcdiff = get_bits(gb, 8 + m);
|
|
} else {
|
|
if (m)
|
|
dcdiff = (dcdiff << m) + get_bits(gb, m) - ((1 << m) - 1);
|
|
}
|
|
if (get_bits1(gb))
|
|
dcdiff = -dcdiff;
|
|
}
|
|
|
|
/* Prediction */
|
|
dcdiff += vc1_i_pred_dc(&v->s, v->overlap, v->pq, n, &dc_val, &dc_pred_dir);
|
|
*dc_val = dcdiff;
|
|
|
|
/* Store the quantized DC coeff, used for prediction */
|
|
if (n < 4)
|
|
scale = s->y_dc_scale;
|
|
else
|
|
scale = s->c_dc_scale;
|
|
block[0] = dcdiff * scale;
|
|
|
|
ac_val = s->ac_val[0][s->block_index[n]];
|
|
ac_val2 = ac_val;
|
|
if (dc_pred_dir) // left
|
|
ac_val -= 16;
|
|
else // top
|
|
ac_val -= 16 * s->block_wrap[n];
|
|
|
|
scale = v->pq * 2 + v->halfpq;
|
|
|
|
//AC Decoding
|
|
i = !!coded;
|
|
|
|
if (coded) {
|
|
int last = 0, skip, value;
|
|
const uint8_t *zz_table;
|
|
int k;
|
|
|
|
if (v->s.ac_pred) {
|
|
if (!dc_pred_dir)
|
|
zz_table = v->zz_8x8[2];
|
|
else
|
|
zz_table = v->zz_8x8[3];
|
|
} else
|
|
zz_table = v->zz_8x8[1];
|
|
|
|
while (!last) {
|
|
int ret = vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
|
|
if (ret < 0)
|
|
return ret;
|
|
i += skip;
|
|
if (i > 63)
|
|
break;
|
|
block[zz_table[i++]] = value;
|
|
}
|
|
|
|
/* apply AC prediction if needed */
|
|
if (s->ac_pred) {
|
|
int sh;
|
|
if (dc_pred_dir) { // left
|
|
sh = v->left_blk_sh;
|
|
} else { // top
|
|
sh = v->top_blk_sh;
|
|
ac_val += 8;
|
|
}
|
|
for (k = 1; k < 8; k++)
|
|
block[k << sh] += ac_val[k];
|
|
}
|
|
/* save AC coeffs for further prediction */
|
|
for (k = 1; k < 8; k++) {
|
|
ac_val2[k] = block[k << v->left_blk_sh];
|
|
ac_val2[k + 8] = block[k << v->top_blk_sh];
|
|
}
|
|
|
|
/* scale AC coeffs */
|
|
for (k = 1; k < 64; k++)
|
|
if (block[k]) {
|
|
block[k] *= scale;
|
|
if (!v->pquantizer)
|
|
block[k] += (block[k] < 0) ? -v->pq : v->pq;
|
|
}
|
|
|
|
} else {
|
|
int k;
|
|
|
|
memset(ac_val2, 0, 16 * 2);
|
|
|
|
/* apply AC prediction if needed */
|
|
if (s->ac_pred) {
|
|
int sh;
|
|
if (dc_pred_dir) { //left
|
|
sh = v->left_blk_sh;
|
|
} else { // top
|
|
sh = v->top_blk_sh;
|
|
ac_val += 8;
|
|
ac_val2 += 8;
|
|
}
|
|
memcpy(ac_val2, ac_val, 8 * 2);
|
|
for (k = 1; k < 8; k++) {
|
|
block[k << sh] = ac_val[k] * scale;
|
|
if (!v->pquantizer && block[k << sh])
|
|
block[k << sh] += (block[k << sh] < 0) ? -v->pq : v->pq;
|
|
}
|
|
}
|
|
}
|
|
if (s->ac_pred) i = 63;
|
|
s->block_last_index[n] = i;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/** Decode intra block in intra frames - should be faster than decode_intra_block
|
|
* @param v VC1Context
|
|
* @param block block to decode
|
|
* @param[in] n subblock number
|
|
* @param coded are AC coeffs present or not
|
|
* @param codingset set of VLC to decode data
|
|
* @param mquant quantizer value for this macroblock
|
|
*/
|
|
static int vc1_decode_i_block_adv(VC1Context *v, int16_t block[64], int n,
|
|
int coded, int codingset, int mquant)
|
|
{
|
|
GetBitContext *gb = &v->s.gb;
|
|
MpegEncContext *s = &v->s;
|
|
int dc_pred_dir = 0; /* Direction of the DC prediction used */
|
|
int i;
|
|
int16_t *dc_val = NULL;
|
|
int16_t *ac_val, *ac_val2;
|
|
int dcdiff;
|
|
int a_avail = v->a_avail, c_avail = v->c_avail;
|
|
int use_pred = s->ac_pred;
|
|
int scale;
|
|
int q1, q2 = 0;
|
|
int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
|
|
int quant = FFABS(mquant);
|
|
|
|
/* Get DC differential */
|
|
dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_vlc[s->dc_table_index][n >= 4],
|
|
MSMP4_DC_VLC_BITS, 3);
|
|
if (dcdiff) {
|
|
const int m = (quant == 1 || quant == 2) ? 3 - quant : 0;
|
|
if (dcdiff == 119 /* ESC index value */) {
|
|
dcdiff = get_bits(gb, 8 + m);
|
|
} else {
|
|
if (m)
|
|
dcdiff = (dcdiff << m) + get_bits(gb, m) - ((1 << m) - 1);
|
|
}
|
|
if (get_bits1(gb))
|
|
dcdiff = -dcdiff;
|
|
}
|
|
|
|
/* Prediction */
|
|
dcdiff += ff_vc1_pred_dc(&v->s, v->overlap, quant, n, v->a_avail, v->c_avail, &dc_val, &dc_pred_dir);
|
|
*dc_val = dcdiff;
|
|
|
|
/* Store the quantized DC coeff, used for prediction */
|
|
if (n < 4)
|
|
scale = s->y_dc_scale;
|
|
else
|
|
scale = s->c_dc_scale;
|
|
block[0] = dcdiff * scale;
|
|
|
|
/* check if AC is needed at all */
|
|
if (!a_avail && !c_avail)
|
|
use_pred = 0;
|
|
|
|
scale = quant * 2 + ((mquant < 0) ? 0 : v->halfpq);
|
|
|
|
ac_val = s->ac_val[0][s->block_index[n]];
|
|
ac_val2 = ac_val;
|
|
if (dc_pred_dir) // left
|
|
ac_val -= 16;
|
|
else // top
|
|
ac_val -= 16 * s->block_wrap[n];
|
|
|
|
q1 = s->cur_pic.qscale_table[mb_pos];
|
|
if (n == 3)
|
|
q2 = q1;
|
|
else if (dc_pred_dir) {
|
|
if (n == 1)
|
|
q2 = q1;
|
|
else if (c_avail && mb_pos)
|
|
q2 = s->cur_pic.qscale_table[mb_pos - 1];
|
|
} else {
|
|
if (n == 2)
|
|
q2 = q1;
|
|
else if (a_avail && mb_pos >= s->mb_stride)
|
|
q2 = s->cur_pic.qscale_table[mb_pos - s->mb_stride];
|
|
}
|
|
|
|
//AC Decoding
|
|
i = 1;
|
|
|
|
if (coded) {
|
|
int last = 0, skip, value;
|
|
const uint8_t *zz_table;
|
|
int k;
|
|
|
|
if (v->s.ac_pred) {
|
|
if (!use_pred && v->fcm == ILACE_FRAME) {
|
|
zz_table = v->zzi_8x8;
|
|
} else {
|
|
if (!dc_pred_dir) // top
|
|
zz_table = v->zz_8x8[2];
|
|
else // left
|
|
zz_table = v->zz_8x8[3];
|
|
}
|
|
} else {
|
|
if (v->fcm != ILACE_FRAME)
|
|
zz_table = v->zz_8x8[1];
|
|
else
|
|
zz_table = v->zzi_8x8;
|
|
}
|
|
|
|
while (!last) {
|
|
int ret = vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
|
|
if (ret < 0)
|
|
return ret;
|
|
i += skip;
|
|
if (i > 63)
|
|
break;
|
|
block[zz_table[i++]] = value;
|
|
}
|
|
|
|
/* apply AC prediction if needed */
|
|
if (use_pred) {
|
|
int sh;
|
|
if (dc_pred_dir) { // left
|
|
sh = v->left_blk_sh;
|
|
} else { // top
|
|
sh = v->top_blk_sh;
|
|
ac_val += 8;
|
|
}
|
|
/* scale predictors if needed*/
|
|
q1 = FFABS(q1) * 2 + ((q1 < 0) ? 0 : v->halfpq) - 1;
|
|
if (q1 < 1)
|
|
return AVERROR_INVALIDDATA;
|
|
if (q2)
|
|
q2 = FFABS(q2) * 2 + ((q2 < 0) ? 0 : v->halfpq) - 1;
|
|
if (q2 && q1 != q2) {
|
|
for (k = 1; k < 8; k++)
|
|
block[k << sh] += (int)(ac_val[k] * (unsigned)q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
|
|
} else {
|
|
for (k = 1; k < 8; k++)
|
|
block[k << sh] += ac_val[k];
|
|
}
|
|
}
|
|
/* save AC coeffs for further prediction */
|
|
for (k = 1; k < 8; k++) {
|
|
ac_val2[k ] = block[k << v->left_blk_sh];
|
|
ac_val2[k + 8] = block[k << v->top_blk_sh];
|
|
}
|
|
|
|
/* scale AC coeffs */
|
|
for (k = 1; k < 64; k++)
|
|
if (block[k]) {
|
|
block[k] *= scale;
|
|
if (!v->pquantizer)
|
|
block[k] += (block[k] < 0) ? -quant : quant;
|
|
}
|
|
|
|
} else { // no AC coeffs
|
|
int k;
|
|
|
|
memset(ac_val2, 0, 16 * 2);
|
|
|
|
/* apply AC prediction if needed */
|
|
if (use_pred) {
|
|
int sh;
|
|
if (dc_pred_dir) { // left
|
|
sh = v->left_blk_sh;
|
|
} else { // top
|
|
sh = v->top_blk_sh;
|
|
ac_val += 8;
|
|
ac_val2 += 8;
|
|
}
|
|
memcpy(ac_val2, ac_val, 8 * 2);
|
|
q1 = FFABS(q1) * 2 + ((q1 < 0) ? 0 : v->halfpq) - 1;
|
|
if (q1 < 1)
|
|
return AVERROR_INVALIDDATA;
|
|
if (q2)
|
|
q2 = FFABS(q2) * 2 + ((q2 < 0) ? 0 : v->halfpq) - 1;
|
|
if (q2 && q1 != q2) {
|
|
for (k = 1; k < 8; k++)
|
|
ac_val2[k] = (int)(ac_val2[k] * q2 * (unsigned)ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
|
|
}
|
|
for (k = 1; k < 8; k++) {
|
|
block[k << sh] = ac_val2[k] * scale;
|
|
if (!v->pquantizer && block[k << sh])
|
|
block[k << sh] += (block[k << sh] < 0) ? -quant : quant;
|
|
}
|
|
}
|
|
}
|
|
if (use_pred) i = 63;
|
|
s->block_last_index[n] = i;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/** Decode intra block in inter frames - more generic version than vc1_decode_i_block
|
|
* @param v VC1Context
|
|
* @param block block to decode
|
|
* @param[in] n subblock index
|
|
* @param coded are AC coeffs present or not
|
|
* @param mquant block quantizer
|
|
* @param codingset set of VLC to decode data
|
|
*/
|
|
static int vc1_decode_intra_block(VC1Context *v, int16_t block[64], int n,
|
|
int coded, int mquant, int codingset)
|
|
{
|
|
GetBitContext *gb = &v->s.gb;
|
|
MpegEncContext *s = &v->s;
|
|
int dc_pred_dir = 0; /* Direction of the DC prediction used */
|
|
int i;
|
|
int16_t *dc_val = NULL;
|
|
int16_t *ac_val, *ac_val2;
|
|
int dcdiff;
|
|
int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
|
|
int a_avail = v->a_avail, c_avail = v->c_avail;
|
|
int use_pred = s->ac_pred;
|
|
int scale;
|
|
int q1, q2 = 0;
|
|
int quant = FFABS(mquant);
|
|
|
|
s->bdsp.clear_block(block);
|
|
|
|
/* XXX: Guard against dumb values of mquant */
|
|
quant = av_clip_uintp2(quant, 5);
|
|
|
|
/* Set DC scale - y and c use the same */
|
|
s->y_dc_scale = s->y_dc_scale_table[quant];
|
|
s->c_dc_scale = s->c_dc_scale_table[quant];
|
|
|
|
/* Get DC differential */
|
|
dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_vlc[s->dc_table_index][n >= 4],
|
|
MSMP4_DC_VLC_BITS, 3);
|
|
if (dcdiff) {
|
|
const int m = (quant == 1 || quant == 2) ? 3 - quant : 0;
|
|
if (dcdiff == 119 /* ESC index value */) {
|
|
dcdiff = get_bits(gb, 8 + m);
|
|
} else {
|
|
if (m)
|
|
dcdiff = (dcdiff << m) + get_bits(gb, m) - ((1 << m) - 1);
|
|
}
|
|
if (get_bits1(gb))
|
|
dcdiff = -dcdiff;
|
|
}
|
|
|
|
/* Prediction */
|
|
dcdiff += ff_vc1_pred_dc(&v->s, v->overlap, quant, n, a_avail, c_avail, &dc_val, &dc_pred_dir);
|
|
*dc_val = dcdiff;
|
|
|
|
/* Store the quantized DC coeff, used for prediction */
|
|
|
|
if (n < 4) {
|
|
block[0] = dcdiff * s->y_dc_scale;
|
|
} else {
|
|
block[0] = dcdiff * s->c_dc_scale;
|
|
}
|
|
|
|
//AC Decoding
|
|
i = 1;
|
|
|
|
/* check if AC is needed at all and adjust direction if needed */
|
|
if (!a_avail) dc_pred_dir = 1;
|
|
if (!c_avail) dc_pred_dir = 0;
|
|
if (!a_avail && !c_avail) use_pred = 0;
|
|
ac_val = s->ac_val[0][s->block_index[n]];
|
|
ac_val2 = ac_val;
|
|
|
|
scale = quant * 2 + ((mquant < 0) ? 0 : v->halfpq);
|
|
|
|
if (dc_pred_dir) //left
|
|
ac_val -= 16;
|
|
else //top
|
|
ac_val -= 16 * s->block_wrap[n];
|
|
|
|
q1 = s->cur_pic.qscale_table[mb_pos];
|
|
if (dc_pred_dir && c_avail && mb_pos)
|
|
q2 = s->cur_pic.qscale_table[mb_pos - 1];
|
|
if (!dc_pred_dir && a_avail && mb_pos >= s->mb_stride)
|
|
q2 = s->cur_pic.qscale_table[mb_pos - s->mb_stride];
|
|
if (dc_pred_dir && n == 1)
|
|
q2 = q1;
|
|
if (!dc_pred_dir && n == 2)
|
|
q2 = q1;
|
|
if (n == 3) q2 = q1;
|
|
|
|
if (coded) {
|
|
int last = 0, skip, value;
|
|
int k;
|
|
|
|
while (!last) {
|
|
int ret = vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
|
|
if (ret < 0)
|
|
return ret;
|
|
i += skip;
|
|
if (i > 63)
|
|
break;
|
|
if (v->fcm == PROGRESSIVE)
|
|
block[v->zz_8x8[0][i++]] = value;
|
|
else {
|
|
if (use_pred && (v->fcm == ILACE_FRAME)) {
|
|
if (!dc_pred_dir) // top
|
|
block[v->zz_8x8[2][i++]] = value;
|
|
else // left
|
|
block[v->zz_8x8[3][i++]] = value;
|
|
} else {
|
|
block[v->zzi_8x8[i++]] = value;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* apply AC prediction if needed */
|
|
if (use_pred) {
|
|
/* scale predictors if needed*/
|
|
q1 = FFABS(q1) * 2 + ((q1 < 0) ? 0 : v->halfpq) - 1;
|
|
if (q1 < 1)
|
|
return AVERROR_INVALIDDATA;
|
|
if (q2)
|
|
q2 = FFABS(q2) * 2 + ((q2 < 0) ? 0 : v->halfpq) - 1;
|
|
if (q2 && q1 != q2) {
|
|
if (dc_pred_dir) { // left
|
|
for (k = 1; k < 8; k++)
|
|
block[k << v->left_blk_sh] += (int)(ac_val[k] * q2 * (unsigned)ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
|
|
} else { //top
|
|
for (k = 1; k < 8; k++)
|
|
block[k << v->top_blk_sh] += (int)(ac_val[k + 8] * q2 * (unsigned)ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
|
|
}
|
|
} else {
|
|
if (dc_pred_dir) { // left
|
|
for (k = 1; k < 8; k++)
|
|
block[k << v->left_blk_sh] += ac_val[k];
|
|
} else { // top
|
|
for (k = 1; k < 8; k++)
|
|
block[k << v->top_blk_sh] += ac_val[k + 8];
|
|
}
|
|
}
|
|
}
|
|
/* save AC coeffs for further prediction */
|
|
for (k = 1; k < 8; k++) {
|
|
ac_val2[k ] = block[k << v->left_blk_sh];
|
|
ac_val2[k + 8] = block[k << v->top_blk_sh];
|
|
}
|
|
|
|
/* scale AC coeffs */
|
|
for (k = 1; k < 64; k++)
|
|
if (block[k]) {
|
|
block[k] *= scale;
|
|
if (!v->pquantizer)
|
|
block[k] += (block[k] < 0) ? -quant : quant;
|
|
}
|
|
|
|
if (use_pred) i = 63;
|
|
} else { // no AC coeffs
|
|
int k;
|
|
|
|
memset(ac_val2, 0, 16 * 2);
|
|
if (dc_pred_dir) { // left
|
|
if (use_pred) {
|
|
memcpy(ac_val2, ac_val, 8 * 2);
|
|
q1 = FFABS(q1) * 2 + ((q1 < 0) ? 0 : v->halfpq) - 1;
|
|
if (q1 < 1)
|
|
return AVERROR_INVALIDDATA;
|
|
if (q2)
|
|
q2 = FFABS(q2) * 2 + ((q2 < 0) ? 0 : v->halfpq) - 1;
|
|
if (q2 && q1 != q2) {
|
|
for (k = 1; k < 8; k++)
|
|
ac_val2[k] = (int)(ac_val2[k] * (unsigned)q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
|
|
}
|
|
}
|
|
} else { // top
|
|
if (use_pred) {
|
|
memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
|
|
q1 = FFABS(q1) * 2 + ((q1 < 0) ? 0 : v->halfpq) - 1;
|
|
if (q1 < 1)
|
|
return AVERROR_INVALIDDATA;
|
|
if (q2)
|
|
q2 = FFABS(q2) * 2 + ((q2 < 0) ? 0 : v->halfpq) - 1;
|
|
if (q2 && q1 != q2) {
|
|
for (k = 1; k < 8; k++)
|
|
ac_val2[k + 8] = (int)(ac_val2[k + 8] * (unsigned)q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* apply AC prediction if needed */
|
|
if (use_pred) {
|
|
if (dc_pred_dir) { // left
|
|
for (k = 1; k < 8; k++) {
|
|
block[k << v->left_blk_sh] = ac_val2[k] * scale;
|
|
if (!v->pquantizer && block[k << v->left_blk_sh])
|
|
block[k << v->left_blk_sh] += (block[k << v->left_blk_sh] < 0) ? -quant : quant;
|
|
}
|
|
} else { // top
|
|
for (k = 1; k < 8; k++) {
|
|
block[k << v->top_blk_sh] = ac_val2[k + 8] * scale;
|
|
if (!v->pquantizer && block[k << v->top_blk_sh])
|
|
block[k << v->top_blk_sh] += (block[k << v->top_blk_sh] < 0) ? -quant : quant;
|
|
}
|
|
}
|
|
i = 63;
|
|
}
|
|
}
|
|
s->block_last_index[n] = i;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/** Decode P block
|
|
*/
|
|
static int vc1_decode_p_block(VC1Context *v, int16_t block[64], int n,
|
|
int mquant, int ttmb, int first_block,
|
|
uint8_t *dst, int linesize, int skip_block,
|
|
int *ttmb_out)
|
|
{
|
|
MpegEncContext *s = &v->s;
|
|
GetBitContext *gb = &s->gb;
|
|
int i, j;
|
|
int subblkpat = 0;
|
|
int scale, off, idx, last, skip, value;
|
|
int ttblk = ttmb & 7;
|
|
int pat = 0;
|
|
int quant = FFABS(mquant);
|
|
|
|
s->bdsp.clear_block(block);
|
|
|
|
if (ttmb == -1) {
|
|
ttblk = ff_vc1_ttblk_to_tt[v->tt_index][get_vlc2(gb, ff_vc1_ttblk_vlc[v->tt_index], VC1_TTBLK_VLC_BITS, 1)];
|
|
}
|
|
if (ttblk == TT_4X4) {
|
|
subblkpat = ~(get_vlc2(gb, ff_vc1_subblkpat_vlc[v->tt_index], VC1_SUBBLKPAT_VLC_BITS, 1) + 1);
|
|
}
|
|
if ((ttblk != TT_8X8 && ttblk != TT_4X4)
|
|
&& ((v->ttmbf || (ttmb != -1 && (ttmb & 8) && !first_block))
|
|
|| (!v->res_rtm_flag && !first_block))) {
|
|
subblkpat = decode012(gb);
|
|
if (subblkpat)
|
|
subblkpat ^= 3; // swap decoded pattern bits
|
|
if (ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM)
|
|
ttblk = TT_8X4;
|
|
if (ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT)
|
|
ttblk = TT_4X8;
|
|
}
|
|
scale = quant * 2 + ((mquant < 0) ? 0 : v->halfpq);
|
|
|
|
// convert transforms like 8X4_TOP to generic TT and SUBBLKPAT
|
|
if (ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) {
|
|
subblkpat = 2 - (ttblk == TT_8X4_TOP);
|
|
ttblk = TT_8X4;
|
|
}
|
|
if (ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) {
|
|
subblkpat = 2 - (ttblk == TT_4X8_LEFT);
|
|
ttblk = TT_4X8;
|
|
}
|
|
switch (ttblk) {
|
|
case TT_8X8:
|
|
pat = 0xF;
|
|
i = 0;
|
|
last = 0;
|
|
while (!last) {
|
|
int ret = vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
|
|
if (ret < 0)
|
|
return ret;
|
|
i += skip;
|
|
if (i > 63)
|
|
break;
|
|
if (!v->fcm)
|
|
idx = v->zz_8x8[0][i++];
|
|
else
|
|
idx = v->zzi_8x8[i++];
|
|
block[idx] = value * scale;
|
|
if (!v->pquantizer)
|
|
block[idx] += (block[idx] < 0) ? -quant : quant;
|
|
}
|
|
if (!skip_block) {
|
|
if (i == 1)
|
|
v->vc1dsp.vc1_inv_trans_8x8_dc(dst, linesize, block);
|
|
else {
|
|
v->vc1dsp.vc1_inv_trans_8x8(block);
|
|
s->idsp.add_pixels_clamped(block, dst, linesize);
|
|
}
|
|
}
|
|
break;
|
|
case TT_4X4:
|
|
pat = ~subblkpat & 0xF;
|
|
for (j = 0; j < 4; j++) {
|
|
last = subblkpat & (1 << (3 - j));
|
|
i = 0;
|
|
off = (j & 1) * 4 + (j & 2) * 16;
|
|
while (!last) {
|
|
int ret = vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
|
|
if (ret < 0)
|
|
return ret;
|
|
i += skip;
|
|
if (i > 15)
|
|
break;
|
|
if (!v->fcm)
|
|
idx = ff_vc1_simple_progressive_4x4_zz[i++];
|
|
else
|
|
idx = ff_vc1_adv_interlaced_4x4_zz[i++];
|
|
block[idx + off] = value * scale;
|
|
if (!v->pquantizer)
|
|
block[idx + off] += (block[idx + off] < 0) ? -quant : quant;
|
|
}
|
|
if (!(subblkpat & (1 << (3 - j))) && !skip_block) {
|
|
if (i == 1)
|
|
v->vc1dsp.vc1_inv_trans_4x4_dc(dst + (j & 1) * 4 + (j & 2) * 2 * linesize, linesize, block + off);
|
|
else
|
|
v->vc1dsp.vc1_inv_trans_4x4(dst + (j & 1) * 4 + (j & 2) * 2 * linesize, linesize, block + off);
|
|
}
|
|
}
|
|
break;
|
|
case TT_8X4:
|
|
pat = ~((subblkpat & 2) * 6 + (subblkpat & 1) * 3) & 0xF;
|
|
for (j = 0; j < 2; j++) {
|
|
last = subblkpat & (1 << (1 - j));
|
|
i = 0;
|
|
off = j * 32;
|
|
while (!last) {
|
|
int ret = vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
|
|
if (ret < 0)
|
|
return ret;
|
|
i += skip;
|
|
if (i > 31)
|
|
break;
|
|
if (!v->fcm)
|
|
idx = v->zz_8x4[i++] + off;
|
|
else
|
|
idx = ff_vc1_adv_interlaced_8x4_zz[i++] + off;
|
|
block[idx] = value * scale;
|
|
if (!v->pquantizer)
|
|
block[idx] += (block[idx] < 0) ? -quant : quant;
|
|
}
|
|
if (!(subblkpat & (1 << (1 - j))) && !skip_block) {
|
|
if (i == 1)
|
|
v->vc1dsp.vc1_inv_trans_8x4_dc(dst + j * 4 * linesize, linesize, block + off);
|
|
else
|
|
v->vc1dsp.vc1_inv_trans_8x4(dst + j * 4 * linesize, linesize, block + off);
|
|
}
|
|
}
|
|
break;
|
|
case TT_4X8:
|
|
pat = ~(subblkpat * 5) & 0xF;
|
|
for (j = 0; j < 2; j++) {
|
|
last = subblkpat & (1 << (1 - j));
|
|
i = 0;
|
|
off = j * 4;
|
|
while (!last) {
|
|
int ret = vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
|
|
if (ret < 0)
|
|
return ret;
|
|
i += skip;
|
|
if (i > 31)
|
|
break;
|
|
if (!v->fcm)
|
|
idx = v->zz_4x8[i++] + off;
|
|
else
|
|
idx = ff_vc1_adv_interlaced_4x8_zz[i++] + off;
|
|
block[idx] = value * scale;
|
|
if (!v->pquantizer)
|
|
block[idx] += (block[idx] < 0) ? -quant : quant;
|
|
}
|
|
if (!(subblkpat & (1 << (1 - j))) && !skip_block) {
|
|
if (i == 1)
|
|
v->vc1dsp.vc1_inv_trans_4x8_dc(dst + j * 4, linesize, block + off);
|
|
else
|
|
v->vc1dsp.vc1_inv_trans_4x8(dst + j*4, linesize, block + off);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
if (ttmb_out)
|
|
*ttmb_out |= ttblk << (n * 4);
|
|
return pat;
|
|
}
|
|
|
|
/** @} */ // Macroblock group
|
|
|
|
static const uint8_t size_table[6] = { 0, 2, 3, 4, 5, 8 };
|
|
|
|
/** Decode one P-frame MB
|
|
*/
|
|
static int vc1_decode_p_mb(VC1Context *v)
|
|
{
|
|
MpegEncContext *s = &v->s;
|
|
GetBitContext *gb = &s->gb;
|
|
int i, j;
|
|
int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
|
|
int cbp; /* cbp decoding stuff */
|
|
int mqdiff, mquant; /* MB quantization */
|
|
int ttmb = v->ttfrm; /* MB Transform type */
|
|
|
|
int mb_has_coeffs = 1; /* last_flag */
|
|
int dmv_x, dmv_y; /* Differential MV components */
|
|
int index, index1; /* LUT indexes */
|
|
int val, sign; /* temp values */
|
|
int first_block = 1;
|
|
int dst_idx, off;
|
|
int skipped, fourmv;
|
|
int block_cbp = 0, pat, block_tt = 0, block_intra = 0;
|
|
int ret;
|
|
|
|
mquant = v->pq; /* lossy initialization */
|
|
|
|
if (v->mv_type_is_raw)
|
|
fourmv = get_bits1(gb);
|
|
else
|
|
fourmv = v->mv_type_mb_plane[mb_pos];
|
|
if (v->skip_is_raw)
|
|
skipped = get_bits1(gb);
|
|
else
|
|
skipped = v->s.mbskip_table[mb_pos];
|
|
|
|
if (!fourmv) { /* 1MV mode */
|
|
if (!skipped) {
|
|
GET_MVDATA(dmv_x, dmv_y);
|
|
|
|
if (s->mb_intra) {
|
|
s->cur_pic.motion_val[1][s->block_index[0]][0] = 0;
|
|
s->cur_pic.motion_val[1][s->block_index[0]][1] = 0;
|
|
}
|
|
s->cur_pic.mb_type[mb_pos] = s->mb_intra ? MB_TYPE_INTRA : MB_TYPE_16x16;
|
|
ff_vc1_pred_mv(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0], 0, 0);
|
|
|
|
/* FIXME Set DC val for inter block ? */
|
|
if (s->mb_intra && !mb_has_coeffs) {
|
|
GET_MQUANT();
|
|
s->ac_pred = get_bits1(gb);
|
|
cbp = 0;
|
|
} else if (mb_has_coeffs) {
|
|
if (s->mb_intra)
|
|
s->ac_pred = get_bits1(gb);
|
|
cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
|
|
GET_MQUANT();
|
|
} else {
|
|
mquant = v->pq;
|
|
cbp = 0;
|
|
}
|
|
s->cur_pic.qscale_table[mb_pos] = mquant;
|
|
|
|
if (!v->ttmbf && !s->mb_intra && mb_has_coeffs)
|
|
ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index],
|
|
VC1_TTMB_VLC_BITS, 2);
|
|
if (!s->mb_intra) ff_vc1_mc_1mv(v, 0);
|
|
dst_idx = 0;
|
|
for (i = 0; i < 6; i++) {
|
|
s->dc_val[0][s->block_index[i]] = 0;
|
|
dst_idx += i >> 2;
|
|
val = ((cbp >> (5 - i)) & 1);
|
|
off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
|
|
v->mb_type[0][s->block_index[i]] = s->mb_intra;
|
|
if (s->mb_intra) {
|
|
/* check if prediction blocks A and C are available */
|
|
v->a_avail = v->c_avail = 0;
|
|
if (i == 2 || i == 3 || !s->first_slice_line)
|
|
v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
|
|
if (i == 1 || i == 3 || s->mb_x)
|
|
v->c_avail = v->mb_type[0][s->block_index[i] - 1];
|
|
|
|
ret = vc1_decode_intra_block(v, v->block[v->cur_blk_idx][block_map[i]], i, val, mquant,
|
|
(i & 4) ? v->codingset2 : v->codingset);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (CONFIG_GRAY && (i > 3) && (s->avctx->flags & AV_CODEC_FLAG_GRAY))
|
|
continue;
|
|
v->vc1dsp.vc1_inv_trans_8x8(v->block[v->cur_blk_idx][block_map[i]]);
|
|
if (v->rangeredfrm)
|
|
for (j = 0; j < 64; j++)
|
|
v->block[v->cur_blk_idx][block_map[i]][j] *= 2;
|
|
block_cbp |= 0xF << (i << 2);
|
|
block_intra |= 1 << i;
|
|
} else if (val) {
|
|
pat = vc1_decode_p_block(v, v->block[v->cur_blk_idx][block_map[i]], i, mquant, ttmb, first_block,
|
|
s->dest[dst_idx] + off, (i & 4) ? s->uvlinesize : s->linesize,
|
|
CONFIG_GRAY && (i & 4) && (s->avctx->flags & AV_CODEC_FLAG_GRAY), &block_tt);
|
|
if (pat < 0)
|
|
return pat;
|
|
block_cbp |= pat << (i << 2);
|
|
if (!v->ttmbf && ttmb < 8)
|
|
ttmb = -1;
|
|
first_block = 0;
|
|
}
|
|
}
|
|
} else { // skipped
|
|
s->mb_intra = 0;
|
|
for (i = 0; i < 6; i++) {
|
|
v->mb_type[0][s->block_index[i]] = 0;
|
|
s->dc_val[0][s->block_index[i]] = 0;
|
|
}
|
|
s->cur_pic.mb_type[mb_pos] = MB_TYPE_SKIP;
|
|
s->cur_pic.qscale_table[mb_pos] = 0;
|
|
ff_vc1_pred_mv(v, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0], 0, 0);
|
|
ff_vc1_mc_1mv(v, 0);
|
|
}
|
|
} else { // 4MV mode
|
|
if (!skipped /* unskipped MB */) {
|
|
int intra_count = 0, coded_inter = 0;
|
|
int is_intra[6], is_coded[6];
|
|
/* Get CBPCY */
|
|
cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
|
|
for (i = 0; i < 6; i++) {
|
|
val = ((cbp >> (5 - i)) & 1);
|
|
s->dc_val[0][s->block_index[i]] = 0;
|
|
s->mb_intra = 0;
|
|
if (i < 4) {
|
|
dmv_x = dmv_y = 0;
|
|
s->mb_intra = 0;
|
|
mb_has_coeffs = 0;
|
|
if (val) {
|
|
GET_MVDATA(dmv_x, dmv_y);
|
|
}
|
|
ff_vc1_pred_mv(v, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0], 0, 0);
|
|
if (!s->mb_intra)
|
|
ff_vc1_mc_4mv_luma(v, i, 0, 0);
|
|
intra_count += s->mb_intra;
|
|
is_intra[i] = s->mb_intra;
|
|
is_coded[i] = mb_has_coeffs;
|
|
}
|
|
if (i & 4) {
|
|
is_intra[i] = (intra_count >= 3);
|
|
is_coded[i] = val;
|
|
}
|
|
if (i == 4)
|
|
ff_vc1_mc_4mv_chroma(v, 0);
|
|
v->mb_type[0][s->block_index[i]] = is_intra[i];
|
|
if (!coded_inter)
|
|
coded_inter = !is_intra[i] & is_coded[i];
|
|
}
|
|
// if there are no coded blocks then don't do anything more
|
|
dst_idx = 0;
|
|
if (!intra_count && !coded_inter)
|
|
goto end;
|
|
GET_MQUANT();
|
|
s->cur_pic.qscale_table[mb_pos] = mquant;
|
|
/* test if block is intra and has pred */
|
|
{
|
|
int intrapred = 0;
|
|
for (i = 0; i < 6; i++)
|
|
if (is_intra[i]) {
|
|
if (((!s->first_slice_line || (i == 2 || i == 3)) && v->mb_type[0][s->block_index[i] - s->block_wrap[i]])
|
|
|| ((s->mb_x || (i == 1 || i == 3)) && v->mb_type[0][s->block_index[i] - 1])) {
|
|
intrapred = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (intrapred)
|
|
s->ac_pred = get_bits1(gb);
|
|
else
|
|
s->ac_pred = 0;
|
|
}
|
|
if (!v->ttmbf && coded_inter)
|
|
ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index], VC1_TTMB_VLC_BITS, 2);
|
|
for (i = 0; i < 6; i++) {
|
|
dst_idx += i >> 2;
|
|
off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
|
|
s->mb_intra = is_intra[i];
|
|
if (is_intra[i]) {
|
|
/* check if prediction blocks A and C are available */
|
|
v->a_avail = v->c_avail = 0;
|
|
if (i == 2 || i == 3 || !s->first_slice_line)
|
|
v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
|
|
if (i == 1 || i == 3 || s->mb_x)
|
|
v->c_avail = v->mb_type[0][s->block_index[i] - 1];
|
|
|
|
ret = vc1_decode_intra_block(v, v->block[v->cur_blk_idx][block_map[i]], i, is_coded[i], mquant,
|
|
(i & 4) ? v->codingset2 : v->codingset);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (CONFIG_GRAY && (i > 3) && (s->avctx->flags & AV_CODEC_FLAG_GRAY))
|
|
continue;
|
|
v->vc1dsp.vc1_inv_trans_8x8(v->block[v->cur_blk_idx][block_map[i]]);
|
|
if (v->rangeredfrm)
|
|
for (j = 0; j < 64; j++)
|
|
v->block[v->cur_blk_idx][block_map[i]][j] *= 2;
|
|
block_cbp |= 0xF << (i << 2);
|
|
block_intra |= 1 << i;
|
|
} else if (is_coded[i]) {
|
|
pat = vc1_decode_p_block(v, v->block[v->cur_blk_idx][block_map[i]], i, mquant, ttmb,
|
|
first_block, s->dest[dst_idx] + off,
|
|
(i & 4) ? s->uvlinesize : s->linesize,
|
|
CONFIG_GRAY && (i & 4) && (s->avctx->flags & AV_CODEC_FLAG_GRAY),
|
|
&block_tt);
|
|
if (pat < 0)
|
|
return pat;
|
|
block_cbp |= pat << (i << 2);
|
|
if (!v->ttmbf && ttmb < 8)
|
|
ttmb = -1;
|
|
first_block = 0;
|
|
}
|
|
}
|
|
} else { // skipped MB
|
|
s->mb_intra = 0;
|
|
s->cur_pic.qscale_table[mb_pos] = 0;
|
|
for (i = 0; i < 6; i++) {
|
|
v->mb_type[0][s->block_index[i]] = 0;
|
|
s->dc_val[0][s->block_index[i]] = 0;
|
|
}
|
|
for (i = 0; i < 4; i++) {
|
|
ff_vc1_pred_mv(v, i, 0, 0, 0, v->range_x, v->range_y, v->mb_type[0], 0, 0);
|
|
ff_vc1_mc_4mv_luma(v, i, 0, 0);
|
|
}
|
|
ff_vc1_mc_4mv_chroma(v, 0);
|
|
s->cur_pic.qscale_table[mb_pos] = 0;
|
|
}
|
|
}
|
|
end:
|
|
if (v->overlap && v->pq >= 9)
|
|
ff_vc1_p_overlap_filter(v);
|
|
vc1_put_blocks_clamped(v, 1);
|
|
|
|
v->cbp[s->mb_x] = block_cbp;
|
|
v->ttblk[s->mb_x] = block_tt;
|
|
v->is_intra[s->mb_x] = block_intra;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Decode one macroblock in an interlaced frame p picture */
|
|
|
|
static int vc1_decode_p_mb_intfr(VC1Context *v)
|
|
{
|
|
MpegEncContext *s = &v->s;
|
|
GetBitContext *gb = &s->gb;
|
|
int i;
|
|
int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
|
|
int cbp = 0; /* cbp decoding stuff */
|
|
int mqdiff, mquant; /* MB quantization */
|
|
int ttmb = v->ttfrm; /* MB Transform type */
|
|
|
|
int mb_has_coeffs = 1; /* last_flag */
|
|
int dmv_x, dmv_y; /* Differential MV components */
|
|
int val; /* temp value */
|
|
int first_block = 1;
|
|
int dst_idx, off;
|
|
int skipped, fourmv = 0, twomv = 0;
|
|
int block_cbp = 0, pat, block_tt = 0;
|
|
int idx_mbmode = 0, mvbp;
|
|
int fieldtx;
|
|
int ret;
|
|
|
|
mquant = v->pq; /* Lossy initialization */
|
|
|
|
if (v->skip_is_raw)
|
|
skipped = get_bits1(gb);
|
|
else
|
|
skipped = v->s.mbskip_table[mb_pos];
|
|
if (!skipped) {
|
|
if (v->fourmvswitch)
|
|
idx_mbmode = get_vlc2(gb, v->mbmode_vlc, VC1_INTFR_4MV_MBMODE_VLC_BITS, 2); // try getting this done
|
|
else
|
|
idx_mbmode = get_vlc2(gb, v->mbmode_vlc, VC1_INTFR_NON4MV_MBMODE_VLC_BITS, 2); // in a single line
|
|
switch (ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0]) {
|
|
/* store the motion vector type in a flag (useful later) */
|
|
case MV_PMODE_INTFR_4MV:
|
|
fourmv = 1;
|
|
v->blk_mv_type[s->block_index[0]] = 0;
|
|
v->blk_mv_type[s->block_index[1]] = 0;
|
|
v->blk_mv_type[s->block_index[2]] = 0;
|
|
v->blk_mv_type[s->block_index[3]] = 0;
|
|
break;
|
|
case MV_PMODE_INTFR_4MV_FIELD:
|
|
fourmv = 1;
|
|
v->blk_mv_type[s->block_index[0]] = 1;
|
|
v->blk_mv_type[s->block_index[1]] = 1;
|
|
v->blk_mv_type[s->block_index[2]] = 1;
|
|
v->blk_mv_type[s->block_index[3]] = 1;
|
|
break;
|
|
case MV_PMODE_INTFR_2MV_FIELD:
|
|
twomv = 1;
|
|
v->blk_mv_type[s->block_index[0]] = 1;
|
|
v->blk_mv_type[s->block_index[1]] = 1;
|
|
v->blk_mv_type[s->block_index[2]] = 1;
|
|
v->blk_mv_type[s->block_index[3]] = 1;
|
|
break;
|
|
case MV_PMODE_INTFR_1MV:
|
|
v->blk_mv_type[s->block_index[0]] = 0;
|
|
v->blk_mv_type[s->block_index[1]] = 0;
|
|
v->blk_mv_type[s->block_index[2]] = 0;
|
|
v->blk_mv_type[s->block_index[3]] = 0;
|
|
break;
|
|
}
|
|
if (ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0] == MV_PMODE_INTFR_INTRA) { // intra MB
|
|
for (i = 0; i < 4; i++) {
|
|
s->cur_pic.motion_val[1][s->block_index[i]][0] = 0;
|
|
s->cur_pic.motion_val[1][s->block_index[i]][1] = 0;
|
|
}
|
|
v->is_intra[s->mb_x] = 0x3f; // Set the bitfield to all 1.
|
|
s->mb_intra = 1;
|
|
s->cur_pic.mb_type[mb_pos] = MB_TYPE_INTRA;
|
|
fieldtx = v->fieldtx_plane[mb_pos] = get_bits1(gb);
|
|
mb_has_coeffs = get_bits1(gb);
|
|
if (mb_has_coeffs)
|
|
cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
|
|
v->s.ac_pred = v->acpred_plane[mb_pos] = get_bits1(gb);
|
|
GET_MQUANT();
|
|
s->cur_pic.qscale_table[mb_pos] = mquant;
|
|
/* Set DC scale - y and c use the same (not sure if necessary here) */
|
|
s->y_dc_scale = s->y_dc_scale_table[FFABS(mquant)];
|
|
s->c_dc_scale = s->c_dc_scale_table[FFABS(mquant)];
|
|
dst_idx = 0;
|
|
for (i = 0; i < 6; i++) {
|
|
v->a_avail = v->c_avail = 0;
|
|
v->mb_type[0][s->block_index[i]] = 1;
|
|
s->dc_val[0][s->block_index[i]] = 0;
|
|
dst_idx += i >> 2;
|
|
val = ((cbp >> (5 - i)) & 1);
|
|
if (i == 2 || i == 3 || !s->first_slice_line)
|
|
v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
|
|
if (i == 1 || i == 3 || s->mb_x)
|
|
v->c_avail = v->mb_type[0][s->block_index[i] - 1];
|
|
|
|
ret = vc1_decode_intra_block(v, v->block[v->cur_blk_idx][block_map[i]], i, val, mquant,
|
|
(i & 4) ? v->codingset2 : v->codingset);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (CONFIG_GRAY && (i > 3) && (s->avctx->flags & AV_CODEC_FLAG_GRAY))
|
|
continue;
|
|
v->vc1dsp.vc1_inv_trans_8x8(v->block[v->cur_blk_idx][block_map[i]]);
|
|
block_cbp |= 0xf << (i << 2);
|
|
}
|
|
|
|
} else { // inter MB
|
|
mb_has_coeffs = ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][3];
|
|
if (mb_has_coeffs)
|
|
cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
|
|
if (ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0] == MV_PMODE_INTFR_2MV_FIELD) {
|
|
v->twomvbp = get_vlc2(gb, v->twomvbp_vlc, VC1_2MV_BLOCK_PATTERN_VLC_BITS, 1);
|
|
} else {
|
|
if ((ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0] == MV_PMODE_INTFR_4MV)
|
|
|| (ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0] == MV_PMODE_INTFR_4MV_FIELD)) {
|
|
v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1);
|
|
}
|
|
}
|
|
s->mb_intra = v->is_intra[s->mb_x] = 0;
|
|
for (i = 0; i < 6; i++)
|
|
v->mb_type[0][s->block_index[i]] = 0;
|
|
fieldtx = v->fieldtx_plane[mb_pos] = ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][1];
|
|
/* for all motion vector read MVDATA and motion compensate each block */
|
|
dst_idx = 0;
|
|
if (fourmv) {
|
|
mvbp = v->fourmvbp;
|
|
for (i = 0; i < 4; i++) {
|
|
dmv_x = dmv_y = 0;
|
|
if (mvbp & (8 >> i))
|
|
get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
|
|
ff_vc1_pred_mv_intfr(v, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, 0);
|
|
ff_vc1_mc_4mv_luma(v, i, 0, 0);
|
|
}
|
|
ff_vc1_mc_4mv_chroma4(v, 0, 0, 0);
|
|
} else if (twomv) {
|
|
mvbp = v->twomvbp;
|
|
dmv_x = dmv_y = 0;
|
|
if (mvbp & 2) {
|
|
get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
|
|
}
|
|
ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 2, v->range_x, v->range_y, 0);
|
|
ff_vc1_mc_4mv_luma(v, 0, 0, 0);
|
|
ff_vc1_mc_4mv_luma(v, 1, 0, 0);
|
|
dmv_x = dmv_y = 0;
|
|
if (mvbp & 1) {
|
|
get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
|
|
}
|
|
ff_vc1_pred_mv_intfr(v, 2, dmv_x, dmv_y, 2, v->range_x, v->range_y, 0);
|
|
ff_vc1_mc_4mv_luma(v, 2, 0, 0);
|
|
ff_vc1_mc_4mv_luma(v, 3, 0, 0);
|
|
ff_vc1_mc_4mv_chroma4(v, 0, 0, 0);
|
|
} else {
|
|
mvbp = ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][2];
|
|
dmv_x = dmv_y = 0;
|
|
if (mvbp) {
|
|
get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
|
|
}
|
|
ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, 0);
|
|
ff_vc1_mc_1mv(v, 0);
|
|
}
|
|
if (cbp)
|
|
GET_MQUANT(); // p. 227
|
|
s->cur_pic.qscale_table[mb_pos] = mquant;
|
|
if (!v->ttmbf && cbp)
|
|
ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index], VC1_TTMB_VLC_BITS, 2);
|
|
for (i = 0; i < 6; i++) {
|
|
s->dc_val[0][s->block_index[i]] = 0;
|
|
dst_idx += i >> 2;
|
|
val = ((cbp >> (5 - i)) & 1);
|
|
if (!fieldtx)
|
|
off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
|
|
else
|
|
off = (i & 4) ? 0 : ((i & 1) * 8 + ((i > 1) * s->linesize));
|
|
if (val) {
|
|
pat = vc1_decode_p_block(v, v->block[v->cur_blk_idx][block_map[i]], i, mquant, ttmb,
|
|
first_block, s->dest[dst_idx] + off,
|
|
(i & 4) ? s->uvlinesize : (s->linesize << fieldtx),
|
|
CONFIG_GRAY && (i & 4) && (s->avctx->flags & AV_CODEC_FLAG_GRAY), &block_tt);
|
|
if (pat < 0)
|
|
return pat;
|
|
block_cbp |= pat << (i << 2);
|
|
if (!v->ttmbf && ttmb < 8)
|
|
ttmb = -1;
|
|
first_block = 0;
|
|
}
|
|
}
|
|
}
|
|
} else { // skipped
|
|
s->mb_intra = v->is_intra[s->mb_x] = 0;
|
|
for (i = 0; i < 6; i++) {
|
|
v->mb_type[0][s->block_index[i]] = 0;
|
|
s->dc_val[0][s->block_index[i]] = 0;
|
|
}
|
|
s->cur_pic.mb_type[mb_pos] = MB_TYPE_SKIP;
|
|
s->cur_pic.qscale_table[mb_pos] = 0;
|
|
v->blk_mv_type[s->block_index[0]] = 0;
|
|
v->blk_mv_type[s->block_index[1]] = 0;
|
|
v->blk_mv_type[s->block_index[2]] = 0;
|
|
v->blk_mv_type[s->block_index[3]] = 0;
|
|
ff_vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, 0);
|
|
ff_vc1_mc_1mv(v, 0);
|
|
v->fieldtx_plane[mb_pos] = 0;
|
|
}
|
|
if (v->overlap && v->pq >= 9)
|
|
ff_vc1_p_overlap_filter(v);
|
|
vc1_put_blocks_clamped(v, 1);
|
|
|
|
v->cbp[s->mb_x] = block_cbp;
|
|
v->ttblk[s->mb_x] = block_tt;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vc1_decode_p_mb_intfi(VC1Context *v)
|
|
{
|
|
MpegEncContext *s = &v->s;
|
|
GetBitContext *gb = &s->gb;
|
|
int i;
|
|
int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
|
|
int cbp = 0; /* cbp decoding stuff */
|
|
int mqdiff, mquant; /* MB quantization */
|
|
int ttmb = v->ttfrm; /* MB Transform type */
|
|
|
|
int mb_has_coeffs = 1; /* last_flag */
|
|
int dmv_x, dmv_y; /* Differential MV components */
|
|
int val; /* temp values */
|
|
int first_block = 1;
|
|
int dst_idx, off;
|
|
int pred_flag = 0;
|
|
int block_cbp = 0, pat, block_tt = 0;
|
|
int idx_mbmode = 0;
|
|
int ret;
|
|
|
|
mquant = v->pq; /* Lossy initialization */
|
|
|
|
idx_mbmode = get_vlc2(gb, v->mbmode_vlc, VC1_IF_MBMODE_VLC_BITS, 2);
|
|
if (idx_mbmode <= 1) { // intra MB
|
|
v->is_intra[s->mb_x] = 0x3f; // Set the bitfield to all 1.
|
|
s->mb_intra = 1;
|
|
s->cur_pic.motion_val[1][s->block_index[0] + v->blocks_off][0] = 0;
|
|
s->cur_pic.motion_val[1][s->block_index[0] + v->blocks_off][1] = 0;
|
|
s->cur_pic.mb_type[mb_pos + v->mb_off] = MB_TYPE_INTRA;
|
|
GET_MQUANT();
|
|
s->cur_pic.qscale_table[mb_pos] = mquant;
|
|
/* Set DC scale - y and c use the same (not sure if necessary here) */
|
|
s->y_dc_scale = s->y_dc_scale_table[FFABS(mquant)];
|
|
s->c_dc_scale = s->c_dc_scale_table[FFABS(mquant)];
|
|
v->s.ac_pred = v->acpred_plane[mb_pos] = get_bits1(gb);
|
|
mb_has_coeffs = idx_mbmode & 1;
|
|
if (mb_has_coeffs)
|
|
cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_ICBPCY_VLC_BITS, 2);
|
|
dst_idx = 0;
|
|
for (i = 0; i < 6; i++) {
|
|
v->a_avail = v->c_avail = 0;
|
|
v->mb_type[0][s->block_index[i]] = 1;
|
|
s->dc_val[0][s->block_index[i]] = 0;
|
|
dst_idx += i >> 2;
|
|
val = ((cbp >> (5 - i)) & 1);
|
|
if (i == 2 || i == 3 || !s->first_slice_line)
|
|
v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
|
|
if (i == 1 || i == 3 || s->mb_x)
|
|
v->c_avail = v->mb_type[0][s->block_index[i] - 1];
|
|
|
|
ret = vc1_decode_intra_block(v, v->block[v->cur_blk_idx][block_map[i]], i, val, mquant,
|
|
(i & 4) ? v->codingset2 : v->codingset);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (CONFIG_GRAY && (i > 3) && (s->avctx->flags & AV_CODEC_FLAG_GRAY))
|
|
continue;
|
|
v->vc1dsp.vc1_inv_trans_8x8(v->block[v->cur_blk_idx][block_map[i]]);
|
|
block_cbp |= 0xf << (i << 2);
|
|
}
|
|
} else {
|
|
s->mb_intra = v->is_intra[s->mb_x] = 0;
|
|
s->cur_pic.mb_type[mb_pos + v->mb_off] = MB_TYPE_16x16;
|
|
for (i = 0; i < 6; i++)
|
|
v->mb_type[0][s->block_index[i]] = 0;
|
|
if (idx_mbmode <= 5) { // 1-MV
|
|
dmv_x = dmv_y = pred_flag = 0;
|
|
if (idx_mbmode & 1) {
|
|
get_mvdata_interlaced(v, &dmv_x, &dmv_y, &pred_flag);
|
|
}
|
|
ff_vc1_pred_mv(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0], pred_flag, 0);
|
|
ff_vc1_mc_1mv(v, 0);
|
|
mb_has_coeffs = !(idx_mbmode & 2);
|
|
} else { // 4-MV
|
|
v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1);
|
|
for (i = 0; i < 4; i++) {
|
|
dmv_x = dmv_y = pred_flag = 0;
|
|
if (v->fourmvbp & (8 >> i))
|
|
get_mvdata_interlaced(v, &dmv_x, &dmv_y, &pred_flag);
|
|
ff_vc1_pred_mv(v, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0], pred_flag, 0);
|
|
ff_vc1_mc_4mv_luma(v, i, 0, 0);
|
|
}
|
|
ff_vc1_mc_4mv_chroma(v, 0);
|
|
mb_has_coeffs = idx_mbmode & 1;
|
|
}
|
|
if (mb_has_coeffs)
|
|
cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
|
|
if (cbp) {
|
|
GET_MQUANT();
|
|
}
|
|
s->cur_pic.qscale_table[mb_pos] = mquant;
|
|
if (!v->ttmbf && cbp) {
|
|
ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index], VC1_TTMB_VLC_BITS, 2);
|
|
}
|
|
dst_idx = 0;
|
|
for (i = 0; i < 6; i++) {
|
|
s->dc_val[0][s->block_index[i]] = 0;
|
|
dst_idx += i >> 2;
|
|
val = ((cbp >> (5 - i)) & 1);
|
|
off = (i & 4) ? 0 : (i & 1) * 8 + (i & 2) * 4 * s->linesize;
|
|
if (val) {
|
|
pat = vc1_decode_p_block(v, v->block[v->cur_blk_idx][block_map[i]], i, mquant, ttmb,
|
|
first_block, s->dest[dst_idx] + off,
|
|
(i & 4) ? s->uvlinesize : s->linesize,
|
|
CONFIG_GRAY && (i & 4) && (s->avctx->flags & AV_CODEC_FLAG_GRAY),
|
|
&block_tt);
|
|
if (pat < 0)
|
|
return pat;
|
|
block_cbp |= pat << (i << 2);
|
|
if (!v->ttmbf && ttmb < 8)
|
|
ttmb = -1;
|
|
first_block = 0;
|
|
}
|
|
}
|
|
}
|
|
if (v->overlap && v->pq >= 9)
|
|
ff_vc1_p_overlap_filter(v);
|
|
vc1_put_blocks_clamped(v, 1);
|
|
|
|
v->cbp[s->mb_x] = block_cbp;
|
|
v->ttblk[s->mb_x] = block_tt;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/** Decode one B-frame MB (in Main profile)
|
|
*/
|
|
static int vc1_decode_b_mb(VC1Context *v)
|
|
{
|
|
MpegEncContext *s = &v->s;
|
|
GetBitContext *gb = &s->gb;
|
|
int i, j;
|
|
int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
|
|
int cbp = 0; /* cbp decoding stuff */
|
|
int mqdiff, mquant; /* MB quantization */
|
|
int ttmb = v->ttfrm; /* MB Transform type */
|
|
int mb_has_coeffs = 0; /* last_flag */
|
|
int index, index1; /* LUT indexes */
|
|
int val, sign; /* temp values */
|
|
int first_block = 1;
|
|
int dst_idx, off;
|
|
int skipped, direct;
|
|
int dmv_x[2], dmv_y[2];
|
|
int bmvtype = BMV_TYPE_BACKWARD;
|
|
int ret;
|
|
|
|
mquant = v->pq; /* lossy initialization */
|
|
s->mb_intra = 0;
|
|
|
|
if (v->dmb_is_raw)
|
|
direct = get_bits1(gb);
|
|
else
|
|
direct = v->direct_mb_plane[mb_pos];
|
|
if (v->skip_is_raw)
|
|
skipped = get_bits1(gb);
|
|
else
|
|
skipped = v->s.mbskip_table[mb_pos];
|
|
|
|
dmv_x[0] = dmv_x[1] = dmv_y[0] = dmv_y[1] = 0;
|
|
for (i = 0; i < 6; i++) {
|
|
v->mb_type[0][s->block_index[i]] = 0;
|
|
s->dc_val[0][s->block_index[i]] = 0;
|
|
}
|
|
s->cur_pic.qscale_table[mb_pos] = 0;
|
|
|
|
if (!direct) {
|
|
if (!skipped) {
|
|
GET_MVDATA(dmv_x[0], dmv_y[0]);
|
|
dmv_x[1] = dmv_x[0];
|
|
dmv_y[1] = dmv_y[0];
|
|
}
|
|
if (skipped || !s->mb_intra) {
|
|
bmvtype = decode012(gb);
|
|
switch (bmvtype) {
|
|
case 0:
|
|
bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_BACKWARD : BMV_TYPE_FORWARD;
|
|
break;
|
|
case 1:
|
|
bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_FORWARD : BMV_TYPE_BACKWARD;
|
|
break;
|
|
case 2:
|
|
bmvtype = BMV_TYPE_INTERPOLATED;
|
|
dmv_x[0] = dmv_y[0] = 0;
|
|
}
|
|
}
|
|
}
|
|
for (i = 0; i < 6; i++)
|
|
v->mb_type[0][s->block_index[i]] = s->mb_intra;
|
|
|
|
if (skipped) {
|
|
if (direct)
|
|
bmvtype = BMV_TYPE_INTERPOLATED;
|
|
ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
|
|
vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
|
|
return 0;
|
|
}
|
|
if (direct) {
|
|
cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
|
|
GET_MQUANT();
|
|
s->mb_intra = 0;
|
|
s->cur_pic.qscale_table[mb_pos] = mquant;
|
|
if (!v->ttmbf)
|
|
ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index], VC1_TTMB_VLC_BITS, 2);
|
|
dmv_x[0] = dmv_y[0] = dmv_x[1] = dmv_y[1] = 0;
|
|
ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
|
|
vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
|
|
} else {
|
|
if (!mb_has_coeffs && !s->mb_intra) {
|
|
/* no coded blocks - effectively skipped */
|
|
ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
|
|
vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
|
|
return 0;
|
|
}
|
|
if (s->mb_intra && !mb_has_coeffs) {
|
|
GET_MQUANT();
|
|
s->cur_pic.qscale_table[mb_pos] = mquant;
|
|
s->ac_pred = get_bits1(gb);
|
|
cbp = 0;
|
|
ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
|
|
} else {
|
|
if (bmvtype == BMV_TYPE_INTERPOLATED) {
|
|
GET_MVDATA(dmv_x[0], dmv_y[0]);
|
|
if (!mb_has_coeffs) {
|
|
/* interpolated skipped block */
|
|
ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
|
|
vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
|
|
return 0;
|
|
}
|
|
}
|
|
ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
|
|
if (!s->mb_intra) {
|
|
vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
|
|
}
|
|
if (s->mb_intra)
|
|
s->ac_pred = get_bits1(gb);
|
|
cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
|
|
GET_MQUANT();
|
|
s->cur_pic.qscale_table[mb_pos] = mquant;
|
|
if (!v->ttmbf && !s->mb_intra && mb_has_coeffs)
|
|
ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index], VC1_TTMB_VLC_BITS, 2);
|
|
}
|
|
}
|
|
dst_idx = 0;
|
|
for (i = 0; i < 6; i++) {
|
|
s->dc_val[0][s->block_index[i]] = 0;
|
|
dst_idx += i >> 2;
|
|
val = ((cbp >> (5 - i)) & 1);
|
|
off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
|
|
v->mb_type[0][s->block_index[i]] = s->mb_intra;
|
|
if (s->mb_intra) {
|
|
/* check if prediction blocks A and C are available */
|
|
v->a_avail = v->c_avail = 0;
|
|
if (i == 2 || i == 3 || !s->first_slice_line)
|
|
v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
|
|
if (i == 1 || i == 3 || s->mb_x)
|
|
v->c_avail = v->mb_type[0][s->block_index[i] - 1];
|
|
|
|
ret = vc1_decode_intra_block(v, s->block[i], i, val, mquant,
|
|
(i & 4) ? v->codingset2 : v->codingset);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (CONFIG_GRAY && (i > 3) && (s->avctx->flags & AV_CODEC_FLAG_GRAY))
|
|
continue;
|
|
v->vc1dsp.vc1_inv_trans_8x8(s->block[i]);
|
|
if (v->rangeredfrm)
|
|
for (j = 0; j < 64; j++)
|
|
s->block[i][j] *= 2;
|
|
s->idsp.put_signed_pixels_clamped(s->block[i],
|
|
s->dest[dst_idx] + off,
|
|
i & 4 ? s->uvlinesize
|
|
: s->linesize);
|
|
} else if (val) {
|
|
int pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb,
|
|
first_block, s->dest[dst_idx] + off,
|
|
(i & 4) ? s->uvlinesize : s->linesize,
|
|
CONFIG_GRAY && (i & 4) && (s->avctx->flags & AV_CODEC_FLAG_GRAY), NULL);
|
|
if (pat < 0)
|
|
return pat;
|
|
if (!v->ttmbf && ttmb < 8)
|
|
ttmb = -1;
|
|
first_block = 0;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/** Decode one B-frame MB (in interlaced field B picture)
|
|
*/
|
|
static int vc1_decode_b_mb_intfi(VC1Context *v)
|
|
{
|
|
MpegEncContext *s = &v->s;
|
|
GetBitContext *gb = &s->gb;
|
|
int i, j;
|
|
int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
|
|
int cbp = 0; /* cbp decoding stuff */
|
|
int mqdiff, mquant; /* MB quantization */
|
|
int ttmb = v->ttfrm; /* MB Transform type */
|
|
int mb_has_coeffs = 0; /* last_flag */
|
|
int val; /* temp value */
|
|
int first_block = 1;
|
|
int dst_idx, off;
|
|
int fwd;
|
|
int dmv_x[2], dmv_y[2], pred_flag[2];
|
|
int bmvtype = BMV_TYPE_BACKWARD;
|
|
int block_cbp = 0, pat, block_tt = 0;
|
|
int idx_mbmode;
|
|
int ret;
|
|
|
|
mquant = v->pq; /* Lossy initialization */
|
|
s->mb_intra = 0;
|
|
|
|
idx_mbmode = get_vlc2(gb, v->mbmode_vlc, VC1_IF_MBMODE_VLC_BITS, 2);
|
|
if (idx_mbmode <= 1) { // intra MB
|
|
v->is_intra[s->mb_x] = 0x3f; // Set the bitfield to all 1.
|
|
s->mb_intra = 1;
|
|
s->cur_pic.motion_val[1][s->block_index[0]][0] = 0;
|
|
s->cur_pic.motion_val[1][s->block_index[0]][1] = 0;
|
|
s->cur_pic.mb_type[mb_pos + v->mb_off] = MB_TYPE_INTRA;
|
|
GET_MQUANT();
|
|
s->cur_pic.qscale_table[mb_pos] = mquant;
|
|
/* Set DC scale - y and c use the same (not sure if necessary here) */
|
|
s->y_dc_scale = s->y_dc_scale_table[FFABS(mquant)];
|
|
s->c_dc_scale = s->c_dc_scale_table[FFABS(mquant)];
|
|
v->s.ac_pred = v->acpred_plane[mb_pos] = get_bits1(gb);
|
|
mb_has_coeffs = idx_mbmode & 1;
|
|
if (mb_has_coeffs)
|
|
cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_ICBPCY_VLC_BITS, 2);
|
|
dst_idx = 0;
|
|
for (i = 0; i < 6; i++) {
|
|
v->a_avail = v->c_avail = 0;
|
|
v->mb_type[0][s->block_index[i]] = 1;
|
|
s->dc_val[0][s->block_index[i]] = 0;
|
|
dst_idx += i >> 2;
|
|
val = ((cbp >> (5 - i)) & 1);
|
|
if (i == 2 || i == 3 || !s->first_slice_line)
|
|
v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
|
|
if (i == 1 || i == 3 || s->mb_x)
|
|
v->c_avail = v->mb_type[0][s->block_index[i] - 1];
|
|
|
|
ret = vc1_decode_intra_block(v, s->block[i], i, val, mquant,
|
|
(i & 4) ? v->codingset2 : v->codingset);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (CONFIG_GRAY && (i > 3) && (s->avctx->flags & AV_CODEC_FLAG_GRAY))
|
|
continue;
|
|
v->vc1dsp.vc1_inv_trans_8x8(s->block[i]);
|
|
if (v->rangeredfrm)
|
|
for (j = 0; j < 64; j++)
|
|
s->block[i][j] <<= 1;
|
|
off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
|
|
s->idsp.put_signed_pixels_clamped(s->block[i],
|
|
s->dest[dst_idx] + off,
|
|
(i & 4) ? s->uvlinesize
|
|
: s->linesize);
|
|
}
|
|
} else {
|
|
s->mb_intra = v->is_intra[s->mb_x] = 0;
|
|
s->cur_pic.mb_type[mb_pos + v->mb_off] = MB_TYPE_16x16;
|
|
for (i = 0; i < 6; i++)
|
|
v->mb_type[0][s->block_index[i]] = 0;
|
|
if (v->fmb_is_raw)
|
|
fwd = v->forward_mb_plane[mb_pos] = get_bits1(gb);
|
|
else
|
|
fwd = v->forward_mb_plane[mb_pos];
|
|
if (idx_mbmode <= 5) { // 1-MV
|
|
int interpmvp = 0;
|
|
dmv_x[0] = dmv_x[1] = dmv_y[0] = dmv_y[1] = 0;
|
|
pred_flag[0] = pred_flag[1] = 0;
|
|
if (fwd)
|
|
bmvtype = BMV_TYPE_FORWARD;
|
|
else {
|
|
bmvtype = decode012(gb);
|
|
switch (bmvtype) {
|
|
case 0:
|
|
bmvtype = BMV_TYPE_BACKWARD;
|
|
break;
|
|
case 1:
|
|
bmvtype = BMV_TYPE_DIRECT;
|
|
break;
|
|
case 2:
|
|
bmvtype = BMV_TYPE_INTERPOLATED;
|
|
interpmvp = get_bits1(gb);
|
|
}
|
|
}
|
|
v->bmvtype = bmvtype;
|
|
if (bmvtype != BMV_TYPE_DIRECT && idx_mbmode & 1) {
|
|
get_mvdata_interlaced(v, &dmv_x[bmvtype == BMV_TYPE_BACKWARD], &dmv_y[bmvtype == BMV_TYPE_BACKWARD], &pred_flag[bmvtype == BMV_TYPE_BACKWARD]);
|
|
}
|
|
if (interpmvp) {
|
|
get_mvdata_interlaced(v, &dmv_x[1], &dmv_y[1], &pred_flag[1]);
|
|
}
|
|
if (bmvtype == BMV_TYPE_DIRECT) {
|
|
dmv_x[0] = dmv_y[0] = pred_flag[0] = 0;
|
|
dmv_x[1] = dmv_y[1] = pred_flag[0] = 0;
|
|
if (!s->next_pic.ptr->field_picture) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Mixed field/frame direct mode not supported\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
}
|
|
ff_vc1_pred_b_mv_intfi(v, 0, dmv_x, dmv_y, 1, pred_flag);
|
|
vc1_b_mc(v, dmv_x, dmv_y, (bmvtype == BMV_TYPE_DIRECT), bmvtype);
|
|
mb_has_coeffs = !(idx_mbmode & 2);
|
|
} else { // 4-MV
|
|
if (fwd)
|
|
bmvtype = BMV_TYPE_FORWARD;
|
|
v->bmvtype = bmvtype;
|
|
v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1);
|
|
for (i = 0; i < 4; i++) {
|
|
dmv_x[0] = dmv_y[0] = pred_flag[0] = 0;
|
|
dmv_x[1] = dmv_y[1] = pred_flag[1] = 0;
|
|
if (v->fourmvbp & (8 >> i)) {
|
|
get_mvdata_interlaced(v, &dmv_x[bmvtype == BMV_TYPE_BACKWARD],
|
|
&dmv_y[bmvtype == BMV_TYPE_BACKWARD],
|
|
&pred_flag[bmvtype == BMV_TYPE_BACKWARD]);
|
|
}
|
|
ff_vc1_pred_b_mv_intfi(v, i, dmv_x, dmv_y, 0, pred_flag);
|
|
ff_vc1_mc_4mv_luma(v, i, bmvtype == BMV_TYPE_BACKWARD, 0);
|
|
}
|
|
ff_vc1_mc_4mv_chroma(v, bmvtype == BMV_TYPE_BACKWARD);
|
|
mb_has_coeffs = idx_mbmode & 1;
|
|
}
|
|
if (mb_has_coeffs)
|
|
cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
|
|
if (cbp) {
|
|
GET_MQUANT();
|
|
}
|
|
s->cur_pic.qscale_table[mb_pos] = mquant;
|
|
if (!v->ttmbf && cbp) {
|
|
ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index], VC1_TTMB_VLC_BITS, 2);
|
|
}
|
|
dst_idx = 0;
|
|
for (i = 0; i < 6; i++) {
|
|
s->dc_val[0][s->block_index[i]] = 0;
|
|
dst_idx += i >> 2;
|
|
val = ((cbp >> (5 - i)) & 1);
|
|
off = (i & 4) ? 0 : (i & 1) * 8 + (i & 2) * 4 * s->linesize;
|
|
if (val) {
|
|
pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb,
|
|
first_block, s->dest[dst_idx] + off,
|
|
(i & 4) ? s->uvlinesize : s->linesize,
|
|
CONFIG_GRAY && (i & 4) && (s->avctx->flags & AV_CODEC_FLAG_GRAY), &block_tt);
|
|
if (pat < 0)
|
|
return pat;
|
|
block_cbp |= pat << (i << 2);
|
|
if (!v->ttmbf && ttmb < 8)
|
|
ttmb = -1;
|
|
first_block = 0;
|
|
}
|
|
}
|
|
}
|
|
v->cbp[s->mb_x] = block_cbp;
|
|
v->ttblk[s->mb_x] = block_tt;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/** Decode one B-frame MB (in interlaced frame B picture)
|
|
*/
|
|
static int vc1_decode_b_mb_intfr(VC1Context *v)
|
|
{
|
|
MpegEncContext *s = &v->s;
|
|
GetBitContext *gb = &s->gb;
|
|
int i, j;
|
|
int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
|
|
int cbp = 0; /* cbp decoding stuff */
|
|
int mqdiff, mquant; /* MB quantization */
|
|
int ttmb = v->ttfrm; /* MB Transform type */
|
|
int mvsw = 0; /* motion vector switch */
|
|
int mb_has_coeffs = 1; /* last_flag */
|
|
int dmv_x, dmv_y; /* Differential MV components */
|
|
int val; /* temp value */
|
|
int first_block = 1;
|
|
int dst_idx, off;
|
|
int skipped, direct, twomv = 0;
|
|
int block_cbp = 0, pat, block_tt = 0;
|
|
int idx_mbmode = 0, mvbp;
|
|
int stride_y, fieldtx;
|
|
int bmvtype = BMV_TYPE_BACKWARD;
|
|
int dir, dir2;
|
|
int ret;
|
|
|
|
mquant = v->pq; /* Lossy initialization */
|
|
s->mb_intra = 0;
|
|
if (v->skip_is_raw)
|
|
skipped = get_bits1(gb);
|
|
else
|
|
skipped = v->s.mbskip_table[mb_pos];
|
|
|
|
if (!skipped) {
|
|
idx_mbmode = get_vlc2(gb, v->mbmode_vlc, VC1_INTFR_NON4MV_MBMODE_VLC_BITS, 2);
|
|
if (ff_vc1_mbmode_intfrp[0][idx_mbmode][0] == MV_PMODE_INTFR_2MV_FIELD) {
|
|
twomv = 1;
|
|
v->blk_mv_type[s->block_index[0]] = 1;
|
|
v->blk_mv_type[s->block_index[1]] = 1;
|
|
v->blk_mv_type[s->block_index[2]] = 1;
|
|
v->blk_mv_type[s->block_index[3]] = 1;
|
|
} else {
|
|
v->blk_mv_type[s->block_index[0]] = 0;
|
|
v->blk_mv_type[s->block_index[1]] = 0;
|
|
v->blk_mv_type[s->block_index[2]] = 0;
|
|
v->blk_mv_type[s->block_index[3]] = 0;
|
|
}
|
|
}
|
|
|
|
if (ff_vc1_mbmode_intfrp[0][idx_mbmode][0] == MV_PMODE_INTFR_INTRA) { // intra MB
|
|
for (i = 0; i < 4; i++) {
|
|
s->mv[0][i][0] = s->cur_pic.motion_val[0][s->block_index[i]][0] = 0;
|
|
s->mv[0][i][1] = s->cur_pic.motion_val[0][s->block_index[i]][1] = 0;
|
|
s->mv[1][i][0] = s->cur_pic.motion_val[1][s->block_index[i]][0] = 0;
|
|
s->mv[1][i][1] = s->cur_pic.motion_val[1][s->block_index[i]][1] = 0;
|
|
}
|
|
v->is_intra[s->mb_x] = 0x3f; // Set the bitfield to all 1.
|
|
s->mb_intra = 1;
|
|
s->cur_pic.mb_type[mb_pos] = MB_TYPE_INTRA;
|
|
fieldtx = v->fieldtx_plane[mb_pos] = get_bits1(gb);
|
|
mb_has_coeffs = get_bits1(gb);
|
|
if (mb_has_coeffs)
|
|
cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
|
|
v->s.ac_pred = v->acpred_plane[mb_pos] = get_bits1(gb);
|
|
GET_MQUANT();
|
|
s->cur_pic.qscale_table[mb_pos] = mquant;
|
|
/* Set DC scale - y and c use the same (not sure if necessary here) */
|
|
s->y_dc_scale = s->y_dc_scale_table[FFABS(mquant)];
|
|
s->c_dc_scale = s->c_dc_scale_table[FFABS(mquant)];
|
|
dst_idx = 0;
|
|
for (i = 0; i < 6; i++) {
|
|
v->a_avail = v->c_avail = 0;
|
|
v->mb_type[0][s->block_index[i]] = 1;
|
|
s->dc_val[0][s->block_index[i]] = 0;
|
|
dst_idx += i >> 2;
|
|
val = ((cbp >> (5 - i)) & 1);
|
|
if (i == 2 || i == 3 || !s->first_slice_line)
|
|
v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
|
|
if (i == 1 || i == 3 || s->mb_x)
|
|
v->c_avail = v->mb_type[0][s->block_index[i] - 1];
|
|
|
|
ret = vc1_decode_intra_block(v, s->block[i], i, val, mquant,
|
|
(i & 4) ? v->codingset2 : v->codingset);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (CONFIG_GRAY && i > 3 && (s->avctx->flags & AV_CODEC_FLAG_GRAY))
|
|
continue;
|
|
v->vc1dsp.vc1_inv_trans_8x8(s->block[i]);
|
|
if (i < 4) {
|
|
stride_y = s->linesize << fieldtx;
|
|
off = (fieldtx) ? ((i & 1) * 8) + ((i & 2) >> 1) * s->linesize : (i & 1) * 8 + 4 * (i & 2) * s->linesize;
|
|
} else {
|
|
stride_y = s->uvlinesize;
|
|
off = 0;
|
|
}
|
|
s->idsp.put_signed_pixels_clamped(s->block[i],
|
|
s->dest[dst_idx] + off,
|
|
stride_y);
|
|
}
|
|
} else {
|
|
s->mb_intra = v->is_intra[s->mb_x] = 0;
|
|
|
|
if (v->dmb_is_raw)
|
|
direct = get_bits1(gb);
|
|
else
|
|
direct = v->direct_mb_plane[mb_pos];
|
|
|
|
if (direct) {
|
|
if (s->next_pic.ptr->field_picture)
|
|
av_log(s->avctx, AV_LOG_WARNING, "Mixed frame/field direct mode not supported\n");
|
|
s->mv[0][0][0] = s->cur_pic.motion_val[0][s->block_index[0]][0] = scale_mv(s->next_pic.motion_val[1][s->block_index[0]][0], v->bfraction, 0, s->quarter_sample);
|
|
s->mv[0][0][1] = s->cur_pic.motion_val[0][s->block_index[0]][1] = scale_mv(s->next_pic.motion_val[1][s->block_index[0]][1], v->bfraction, 0, s->quarter_sample);
|
|
s->mv[1][0][0] = s->cur_pic.motion_val[1][s->block_index[0]][0] = scale_mv(s->next_pic.motion_val[1][s->block_index[0]][0], v->bfraction, 1, s->quarter_sample);
|
|
s->mv[1][0][1] = s->cur_pic.motion_val[1][s->block_index[0]][1] = scale_mv(s->next_pic.motion_val[1][s->block_index[0]][1], v->bfraction, 1, s->quarter_sample);
|
|
|
|
if (twomv) {
|
|
s->mv[0][2][0] = s->cur_pic.motion_val[0][s->block_index[2]][0] = scale_mv(s->next_pic.motion_val[1][s->block_index[2]][0], v->bfraction, 0, s->quarter_sample);
|
|
s->mv[0][2][1] = s->cur_pic.motion_val[0][s->block_index[2]][1] = scale_mv(s->next_pic.motion_val[1][s->block_index[2]][1], v->bfraction, 0, s->quarter_sample);
|
|
s->mv[1][2][0] = s->cur_pic.motion_val[1][s->block_index[2]][0] = scale_mv(s->next_pic.motion_val[1][s->block_index[2]][0], v->bfraction, 1, s->quarter_sample);
|
|
s->mv[1][2][1] = s->cur_pic.motion_val[1][s->block_index[2]][1] = scale_mv(s->next_pic.motion_val[1][s->block_index[2]][1], v->bfraction, 1, s->quarter_sample);
|
|
|
|
for (i = 1; i < 4; i += 2) {
|
|
s->mv[0][i][0] = s->cur_pic.motion_val[0][s->block_index[i]][0] = s->mv[0][i-1][0];
|
|
s->mv[0][i][1] = s->cur_pic.motion_val[0][s->block_index[i]][1] = s->mv[0][i-1][1];
|
|
s->mv[1][i][0] = s->cur_pic.motion_val[1][s->block_index[i]][0] = s->mv[1][i-1][0];
|
|
s->mv[1][i][1] = s->cur_pic.motion_val[1][s->block_index[i]][1] = s->mv[1][i-1][1];
|
|
}
|
|
} else {
|
|
for (i = 1; i < 4; i++) {
|
|
s->mv[0][i][0] = s->cur_pic.motion_val[0][s->block_index[i]][0] = s->mv[0][0][0];
|
|
s->mv[0][i][1] = s->cur_pic.motion_val[0][s->block_index[i]][1] = s->mv[0][0][1];
|
|
s->mv[1][i][0] = s->cur_pic.motion_val[1][s->block_index[i]][0] = s->mv[1][0][0];
|
|
s->mv[1][i][1] = s->cur_pic.motion_val[1][s->block_index[i]][1] = s->mv[1][0][1];
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!direct) {
|
|
if (skipped || !s->mb_intra) {
|
|
bmvtype = decode012(gb);
|
|
switch (bmvtype) {
|
|
case 0:
|
|
bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_BACKWARD : BMV_TYPE_FORWARD;
|
|
break;
|
|
case 1:
|
|
bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_FORWARD : BMV_TYPE_BACKWARD;
|
|
break;
|
|
case 2:
|
|
bmvtype = BMV_TYPE_INTERPOLATED;
|
|
}
|
|
}
|
|
|
|
if (twomv && bmvtype != BMV_TYPE_INTERPOLATED)
|
|
mvsw = get_bits1(gb);
|
|
}
|
|
|
|
if (!skipped) { // inter MB
|
|
mb_has_coeffs = ff_vc1_mbmode_intfrp[0][idx_mbmode][3];
|
|
if (mb_has_coeffs)
|
|
cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
|
|
if (!direct) {
|
|
if (bmvtype == BMV_TYPE_INTERPOLATED && twomv) {
|
|
v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1);
|
|
} else if (bmvtype == BMV_TYPE_INTERPOLATED || twomv) {
|
|
v->twomvbp = get_vlc2(gb, v->twomvbp_vlc, VC1_2MV_BLOCK_PATTERN_VLC_BITS, 1);
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < 6; i++)
|
|
v->mb_type[0][s->block_index[i]] = 0;
|
|
fieldtx = v->fieldtx_plane[mb_pos] = ff_vc1_mbmode_intfrp[0][idx_mbmode][1];
|
|
/* for all motion vector read MVDATA and motion compensate each block */
|
|
dst_idx = 0;
|
|
if (direct) {
|
|
if (twomv) {
|
|
for (i = 0; i < 4; i++) {
|
|
ff_vc1_mc_4mv_luma(v, i, 0, 0);
|
|
ff_vc1_mc_4mv_luma(v, i, 1, 1);
|
|
}
|
|
ff_vc1_mc_4mv_chroma4(v, 0, 0, 0);
|
|
ff_vc1_mc_4mv_chroma4(v, 1, 1, 1);
|
|
} else {
|
|
ff_vc1_mc_1mv(v, 0);
|
|
ff_vc1_interp_mc(v);
|
|
}
|
|
} else if (twomv && bmvtype == BMV_TYPE_INTERPOLATED) {
|
|
mvbp = v->fourmvbp;
|
|
for (i = 0; i < 4; i++) {
|
|
dir = i==1 || i==3;
|
|
dmv_x = dmv_y = 0;
|
|
val = ((mvbp >> (3 - i)) & 1);
|
|
if (val)
|
|
get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
|
|
j = i > 1 ? 2 : 0;
|
|
ff_vc1_pred_mv_intfr(v, j, dmv_x, dmv_y, 2, v->range_x, v->range_y, dir);
|
|
ff_vc1_mc_4mv_luma(v, j, dir, dir);
|
|
ff_vc1_mc_4mv_luma(v, j+1, dir, dir);
|
|
}
|
|
|
|
ff_vc1_mc_4mv_chroma4(v, 0, 0, 0);
|
|
ff_vc1_mc_4mv_chroma4(v, 1, 1, 1);
|
|
} else if (bmvtype == BMV_TYPE_INTERPOLATED) {
|
|
mvbp = v->twomvbp;
|
|
dmv_x = dmv_y = 0;
|
|
if (mvbp & 2)
|
|
get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
|
|
|
|
ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, 0);
|
|
ff_vc1_mc_1mv(v, 0);
|
|
|
|
dmv_x = dmv_y = 0;
|
|
if (mvbp & 1)
|
|
get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
|
|
|
|
ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, 1);
|
|
ff_vc1_interp_mc(v);
|
|
} else if (twomv) {
|
|
dir = bmvtype == BMV_TYPE_BACKWARD;
|
|
dir2 = dir;
|
|
if (mvsw)
|
|
dir2 = !dir;
|
|
mvbp = v->twomvbp;
|
|
dmv_x = dmv_y = 0;
|
|
if (mvbp & 2)
|
|
get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
|
|
ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 2, v->range_x, v->range_y, dir);
|
|
|
|
dmv_x = dmv_y = 0;
|
|
if (mvbp & 1)
|
|
get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
|
|
ff_vc1_pred_mv_intfr(v, 2, dmv_x, dmv_y, 2, v->range_x, v->range_y, dir2);
|
|
|
|
if (mvsw) {
|
|
for (i = 0; i < 2; i++) {
|
|
s->mv[dir][i+2][0] = s->mv[dir][i][0] = s->cur_pic.motion_val[dir][s->block_index[i+2]][0] = s->cur_pic.motion_val[dir][s->block_index[i]][0];
|
|
s->mv[dir][i+2][1] = s->mv[dir][i][1] = s->cur_pic.motion_val[dir][s->block_index[i+2]][1] = s->cur_pic.motion_val[dir][s->block_index[i]][1];
|
|
s->mv[dir2][i+2][0] = s->mv[dir2][i][0] = s->cur_pic.motion_val[dir2][s->block_index[i]][0] = s->cur_pic.motion_val[dir2][s->block_index[i+2]][0];
|
|
s->mv[dir2][i+2][1] = s->mv[dir2][i][1] = s->cur_pic.motion_val[dir2][s->block_index[i]][1] = s->cur_pic.motion_val[dir2][s->block_index[i+2]][1];
|
|
}
|
|
} else {
|
|
ff_vc1_pred_mv_intfr(v, 0, 0, 0, 2, v->range_x, v->range_y, !dir);
|
|
ff_vc1_pred_mv_intfr(v, 2, 0, 0, 2, v->range_x, v->range_y, !dir);
|
|
}
|
|
|
|
ff_vc1_mc_4mv_luma(v, 0, dir, 0);
|
|
ff_vc1_mc_4mv_luma(v, 1, dir, 0);
|
|
ff_vc1_mc_4mv_luma(v, 2, dir2, 0);
|
|
ff_vc1_mc_4mv_luma(v, 3, dir2, 0);
|
|
ff_vc1_mc_4mv_chroma4(v, dir, dir2, 0);
|
|
} else {
|
|
dir = bmvtype == BMV_TYPE_BACKWARD;
|
|
|
|
mvbp = ff_vc1_mbmode_intfrp[0][idx_mbmode][2];
|
|
dmv_x = dmv_y = 0;
|
|
if (mvbp)
|
|
get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
|
|
|
|
ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, dir);
|
|
v->blk_mv_type[s->block_index[0]] = 1;
|
|
v->blk_mv_type[s->block_index[1]] = 1;
|
|
v->blk_mv_type[s->block_index[2]] = 1;
|
|
v->blk_mv_type[s->block_index[3]] = 1;
|
|
ff_vc1_pred_mv_intfr(v, 0, 0, 0, 2, v->range_x, v->range_y, !dir);
|
|
for (i = 0; i < 2; i++) {
|
|
s->mv[!dir][i+2][0] = s->mv[!dir][i][0] = s->cur_pic.motion_val[!dir][s->block_index[i+2]][0] = s->cur_pic.motion_val[!dir][s->block_index[i]][0];
|
|
s->mv[!dir][i+2][1] = s->mv[!dir][i][1] = s->cur_pic.motion_val[!dir][s->block_index[i+2]][1] = s->cur_pic.motion_val[!dir][s->block_index[i]][1];
|
|
}
|
|
ff_vc1_mc_1mv(v, dir);
|
|
}
|
|
|
|
if (cbp)
|
|
GET_MQUANT(); // p. 227
|
|
s->cur_pic.qscale_table[mb_pos] = mquant;
|
|
if (!v->ttmbf && cbp)
|
|
ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index], VC1_TTMB_VLC_BITS, 2);
|
|
for (i = 0; i < 6; i++) {
|
|
s->dc_val[0][s->block_index[i]] = 0;
|
|
dst_idx += i >> 2;
|
|
val = ((cbp >> (5 - i)) & 1);
|
|
if (!fieldtx)
|
|
off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
|
|
else
|
|
off = (i & 4) ? 0 : ((i & 1) * 8 + ((i > 1) * s->linesize));
|
|
if (val) {
|
|
pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb,
|
|
first_block, s->dest[dst_idx] + off,
|
|
(i & 4) ? s->uvlinesize : (s->linesize << fieldtx),
|
|
CONFIG_GRAY && (i & 4) && (s->avctx->flags & AV_CODEC_FLAG_GRAY), &block_tt);
|
|
if (pat < 0)
|
|
return pat;
|
|
block_cbp |= pat << (i << 2);
|
|
if (!v->ttmbf && ttmb < 8)
|
|
ttmb = -1;
|
|
first_block = 0;
|
|
}
|
|
}
|
|
|
|
} else { // skipped
|
|
dir = 0;
|
|
for (i = 0; i < 6; i++) {
|
|
v->mb_type[0][s->block_index[i]] = 0;
|
|
s->dc_val[0][s->block_index[i]] = 0;
|
|
}
|
|
s->cur_pic.mb_type[mb_pos] = MB_TYPE_SKIP;
|
|
s->cur_pic.qscale_table[mb_pos] = 0;
|
|
v->blk_mv_type[s->block_index[0]] = 0;
|
|
v->blk_mv_type[s->block_index[1]] = 0;
|
|
v->blk_mv_type[s->block_index[2]] = 0;
|
|
v->blk_mv_type[s->block_index[3]] = 0;
|
|
|
|
if (!direct) {
|
|
if (bmvtype == BMV_TYPE_INTERPOLATED) {
|
|
ff_vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, 0);
|
|
ff_vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, 1);
|
|
} else {
|
|
dir = bmvtype == BMV_TYPE_BACKWARD;
|
|
ff_vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, dir);
|
|
if (mvsw) {
|
|
int dir2 = dir;
|
|
if (mvsw)
|
|
dir2 = !dir;
|
|
for (i = 0; i < 2; i++) {
|
|
s->mv[dir][i+2][0] = s->mv[dir][i][0] = s->cur_pic.motion_val[dir][s->block_index[i+2]][0] = s->cur_pic.motion_val[dir][s->block_index[i]][0];
|
|
s->mv[dir][i+2][1] = s->mv[dir][i][1] = s->cur_pic.motion_val[dir][s->block_index[i+2]][1] = s->cur_pic.motion_val[dir][s->block_index[i]][1];
|
|
s->mv[dir2][i+2][0] = s->mv[dir2][i][0] = s->cur_pic.motion_val[dir2][s->block_index[i]][0] = s->cur_pic.motion_val[dir2][s->block_index[i+2]][0];
|
|
s->mv[dir2][i+2][1] = s->mv[dir2][i][1] = s->cur_pic.motion_val[dir2][s->block_index[i]][1] = s->cur_pic.motion_val[dir2][s->block_index[i+2]][1];
|
|
}
|
|
} else {
|
|
v->blk_mv_type[s->block_index[0]] = 1;
|
|
v->blk_mv_type[s->block_index[1]] = 1;
|
|
v->blk_mv_type[s->block_index[2]] = 1;
|
|
v->blk_mv_type[s->block_index[3]] = 1;
|
|
ff_vc1_pred_mv_intfr(v, 0, 0, 0, 2, v->range_x, v->range_y, !dir);
|
|
for (i = 0; i < 2; i++) {
|
|
s->mv[!dir][i+2][0] = s->mv[!dir][i][0] = s->cur_pic.motion_val[!dir][s->block_index[i+2]][0] = s->cur_pic.motion_val[!dir][s->block_index[i]][0];
|
|
s->mv[!dir][i+2][1] = s->mv[!dir][i][1] = s->cur_pic.motion_val[!dir][s->block_index[i+2]][1] = s->cur_pic.motion_val[!dir][s->block_index[i]][1];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
ff_vc1_mc_1mv(v, dir);
|
|
if (direct || bmvtype == BMV_TYPE_INTERPOLATED) {
|
|
ff_vc1_interp_mc(v);
|
|
}
|
|
v->fieldtx_plane[mb_pos] = 0;
|
|
}
|
|
}
|
|
v->cbp[s->mb_x] = block_cbp;
|
|
v->ttblk[s->mb_x] = block_tt;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/** Decode blocks of I-frame
|
|
*/
|
|
static void vc1_decode_i_blocks(VC1Context *v)
|
|
{
|
|
int k, j;
|
|
MpegEncContext *s = &v->s;
|
|
int cbp, val;
|
|
uint8_t *coded_val;
|
|
int mb_pos;
|
|
|
|
/* select coding mode used for VLC tables selection */
|
|
switch (v->y_ac_table_index) {
|
|
case 0:
|
|
v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
|
|
break;
|
|
case 1:
|
|
v->codingset = CS_HIGH_MOT_INTRA;
|
|
break;
|
|
case 2:
|
|
v->codingset = CS_MID_RATE_INTRA;
|
|
break;
|
|
}
|
|
|
|
switch (v->c_ac_table_index) {
|
|
case 0:
|
|
v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
|
|
break;
|
|
case 1:
|
|
v->codingset2 = CS_HIGH_MOT_INTER;
|
|
break;
|
|
case 2:
|
|
v->codingset2 = CS_MID_RATE_INTER;
|
|
break;
|
|
}
|
|
|
|
/* Set DC scale - y and c use the same */
|
|
s->y_dc_scale = s->y_dc_scale_table[v->pq];
|
|
s->c_dc_scale = s->c_dc_scale_table[v->pq];
|
|
|
|
//do frame decode
|
|
s->mb_x = s->mb_y = 0;
|
|
s->mb_intra = 1;
|
|
s->first_slice_line = 1;
|
|
for (s->mb_y = s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) {
|
|
s->mb_x = 0;
|
|
init_block_index(v);
|
|
for (; s->mb_x < v->end_mb_x; s->mb_x++) {
|
|
update_block_index(s);
|
|
s->bdsp.clear_blocks(v->block[v->cur_blk_idx][0]);
|
|
mb_pos = s->mb_x + s->mb_y * s->mb_width;
|
|
s->cur_pic.mb_type[mb_pos] = MB_TYPE_INTRA;
|
|
s->cur_pic.qscale_table[mb_pos] = v->pq;
|
|
for (int i = 0; i < 4; i++) {
|
|
s->cur_pic.motion_val[1][s->block_index[i]][0] = 0;
|
|
s->cur_pic.motion_val[1][s->block_index[i]][1] = 0;
|
|
}
|
|
|
|
// do actual MB decoding and displaying
|
|
cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc,
|
|
MSMP4_MB_INTRA_VLC_BITS, 2);
|
|
v->s.ac_pred = get_bits1(&v->s.gb);
|
|
|
|
for (k = 0; k < 6; k++) {
|
|
v->mb_type[0][s->block_index[k]] = 1;
|
|
|
|
val = ((cbp >> (5 - k)) & 1);
|
|
|
|
if (k < 4) {
|
|
int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
|
|
val = val ^ pred;
|
|
*coded_val = val;
|
|
}
|
|
cbp |= val << (5 - k);
|
|
|
|
vc1_decode_i_block(v, v->block[v->cur_blk_idx][block_map[k]], k, val, (k < 4) ? v->codingset : v->codingset2);
|
|
|
|
if (CONFIG_GRAY && k > 3 && (s->avctx->flags & AV_CODEC_FLAG_GRAY))
|
|
continue;
|
|
v->vc1dsp.vc1_inv_trans_8x8(v->block[v->cur_blk_idx][block_map[k]]);
|
|
}
|
|
|
|
if (v->overlap && v->pq >= 9) {
|
|
ff_vc1_i_overlap_filter(v);
|
|
if (v->rangeredfrm)
|
|
for (k = 0; k < 6; k++)
|
|
for (j = 0; j < 64; j++)
|
|
v->block[v->cur_blk_idx][block_map[k]][j] *= 2;
|
|
vc1_put_blocks_clamped(v, 1);
|
|
} else {
|
|
if (v->rangeredfrm)
|
|
for (k = 0; k < 6; k++)
|
|
for (j = 0; j < 64; j++)
|
|
v->block[v->cur_blk_idx][block_map[k]][j] = (v->block[v->cur_blk_idx][block_map[k]][j] - 64) * 2;
|
|
vc1_put_blocks_clamped(v, 0);
|
|
}
|
|
|
|
if (v->s.loop_filter)
|
|
ff_vc1_i_loop_filter(v);
|
|
|
|
if (get_bits_left(&s->gb) < 0) {
|
|
ff_er_add_slice(&s->er, 0, 0, s->mb_x, s->mb_y, ER_MB_ERROR);
|
|
av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n",
|
|
get_bits_count(&s->gb), s->gb.size_in_bits);
|
|
return;
|
|
}
|
|
|
|
v->topleft_blk_idx = (v->topleft_blk_idx + 1) % (v->end_mb_x + 2);
|
|
v->top_blk_idx = (v->top_blk_idx + 1) % (v->end_mb_x + 2);
|
|
v->left_blk_idx = (v->left_blk_idx + 1) % (v->end_mb_x + 2);
|
|
v->cur_blk_idx = (v->cur_blk_idx + 1) % (v->end_mb_x + 2);
|
|
}
|
|
|
|
s->first_slice_line = 0;
|
|
}
|
|
|
|
/* This is intentionally mb_height and not end_mb_y - unlike in advanced
|
|
* profile, these only differ are when decoding MSS2 rectangles. */
|
|
ff_er_add_slice(&s->er, 0, 0, s->mb_width - 1, s->mb_height - 1, ER_MB_END);
|
|
}
|
|
|
|
/** Decode blocks of I-frame for advanced profile
|
|
*/
|
|
static int vc1_decode_i_blocks_adv(VC1Context *v)
|
|
{
|
|
int k;
|
|
MpegEncContext *s = &v->s;
|
|
int cbp, val;
|
|
uint8_t *coded_val;
|
|
int mb_pos;
|
|
int mquant;
|
|
int mqdiff;
|
|
GetBitContext *gb = &s->gb;
|
|
|
|
if (get_bits_left(gb) <= 1)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
/* select coding mode used for VLC tables selection */
|
|
switch (v->y_ac_table_index) {
|
|
case 0:
|
|
v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
|
|
break;
|
|
case 1:
|
|
v->codingset = CS_HIGH_MOT_INTRA;
|
|
break;
|
|
case 2:
|
|
v->codingset = CS_MID_RATE_INTRA;
|
|
break;
|
|
}
|
|
|
|
switch (v->c_ac_table_index) {
|
|
case 0:
|
|
v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
|
|
break;
|
|
case 1:
|
|
v->codingset2 = CS_HIGH_MOT_INTER;
|
|
break;
|
|
case 2:
|
|
v->codingset2 = CS_MID_RATE_INTER;
|
|
break;
|
|
}
|
|
|
|
// do frame decode
|
|
s->mb_intra = 1;
|
|
s->first_slice_line = 1;
|
|
s->mb_x = 0;
|
|
s->mb_y = s->start_mb_y;
|
|
if (s->start_mb_y) {
|
|
memset(&s->coded_block[(2 * s->mb_y - 1) * s->b8_stride - 2], 0,
|
|
(1 + s->b8_stride) * sizeof(*s->coded_block));
|
|
}
|
|
for (; s->mb_y < s->end_mb_y; s->mb_y++) {
|
|
s->mb_x = 0;
|
|
init_block_index(v);
|
|
for (;s->mb_x < s->mb_width; s->mb_x++) {
|
|
mquant = v->pq;
|
|
update_block_index(s);
|
|
s->bdsp.clear_blocks(v->block[v->cur_blk_idx][0]);
|
|
mb_pos = s->mb_x + s->mb_y * s->mb_stride;
|
|
s->cur_pic.mb_type[mb_pos + v->mb_off] = MB_TYPE_INTRA;
|
|
for (int i = 0; i < 4; i++) {
|
|
s->cur_pic.motion_val[1][s->block_index[i] + v->blocks_off][0] = 0;
|
|
s->cur_pic.motion_val[1][s->block_index[i] + v->blocks_off][1] = 0;
|
|
}
|
|
|
|
// do actual MB decoding and displaying
|
|
if (v->fieldtx_is_raw)
|
|
v->fieldtx_plane[mb_pos] = get_bits1(&v->s.gb);
|
|
if (get_bits_left(&v->s.gb) <= 1) {
|
|
ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_x, s->mb_y, ER_MB_ERROR);
|
|
return 0;
|
|
}
|
|
|
|
cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc,
|
|
MSMP4_MB_INTRA_VLC_BITS, 2);
|
|
if (v->acpred_is_raw)
|
|
v->s.ac_pred = get_bits1(&v->s.gb);
|
|
else
|
|
v->s.ac_pred = v->acpred_plane[mb_pos];
|
|
|
|
if (v->condover == CONDOVER_SELECT && v->overflg_is_raw)
|
|
v->over_flags_plane[mb_pos] = get_bits1(&v->s.gb);
|
|
|
|
GET_MQUANT();
|
|
|
|
s->cur_pic.qscale_table[mb_pos] = mquant;
|
|
/* Set DC scale - y and c use the same */
|
|
s->y_dc_scale = s->y_dc_scale_table[FFABS(mquant)];
|
|
s->c_dc_scale = s->c_dc_scale_table[FFABS(mquant)];
|
|
|
|
for (k = 0; k < 6; k++) {
|
|
v->mb_type[0][s->block_index[k]] = 1;
|
|
|
|
val = ((cbp >> (5 - k)) & 1);
|
|
|
|
if (k < 4) {
|
|
int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
|
|
val = val ^ pred;
|
|
*coded_val = val;
|
|
}
|
|
cbp |= val << (5 - k);
|
|
|
|
v->a_avail = !s->first_slice_line || (k == 2 || k == 3);
|
|
v->c_avail = !!s->mb_x || (k == 1 || k == 3);
|
|
|
|
vc1_decode_i_block_adv(v, v->block[v->cur_blk_idx][block_map[k]], k, val,
|
|
(k < 4) ? v->codingset : v->codingset2, mquant);
|
|
|
|
if (CONFIG_GRAY && k > 3 && (s->avctx->flags & AV_CODEC_FLAG_GRAY))
|
|
continue;
|
|
v->vc1dsp.vc1_inv_trans_8x8(v->block[v->cur_blk_idx][block_map[k]]);
|
|
}
|
|
|
|
if (v->overlap && (v->pq >= 9 || v->condover != CONDOVER_NONE))
|
|
ff_vc1_i_overlap_filter(v);
|
|
vc1_put_blocks_clamped(v, 1);
|
|
if (v->s.loop_filter)
|
|
ff_vc1_i_loop_filter(v);
|
|
|
|
if (get_bits_left(&s->gb) < 0) {
|
|
// TODO: may need modification to handle slice coding
|
|
ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_x, s->mb_y, ER_MB_ERROR);
|
|
av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n",
|
|
get_bits_count(&s->gb), s->gb.size_in_bits);
|
|
return 0;
|
|
}
|
|
inc_blk_idx(v->topleft_blk_idx);
|
|
inc_blk_idx(v->top_blk_idx);
|
|
inc_blk_idx(v->left_blk_idx);
|
|
inc_blk_idx(v->cur_blk_idx);
|
|
}
|
|
s->first_slice_line = 0;
|
|
}
|
|
|
|
ff_er_add_slice(&s->er, 0, s->start_mb_y << v->field_mode, s->mb_width - 1,
|
|
(s->end_mb_y << v->field_mode) - 1, ER_MB_END);
|
|
return 0;
|
|
}
|
|
|
|
static void vc1_decode_p_blocks(VC1Context *v)
|
|
{
|
|
MpegEncContext *s = &v->s;
|
|
int apply_loop_filter;
|
|
int ret;
|
|
|
|
/* select coding mode used for VLC tables selection */
|
|
switch (v->c_ac_table_index) {
|
|
case 0:
|
|
v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
|
|
break;
|
|
case 1:
|
|
v->codingset = CS_HIGH_MOT_INTRA;
|
|
break;
|
|
case 2:
|
|
v->codingset = CS_MID_RATE_INTRA;
|
|
break;
|
|
}
|
|
|
|
switch (v->c_ac_table_index) {
|
|
case 0:
|
|
v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
|
|
break;
|
|
case 1:
|
|
v->codingset2 = CS_HIGH_MOT_INTER;
|
|
break;
|
|
case 2:
|
|
v->codingset2 = CS_MID_RATE_INTER;
|
|
break;
|
|
}
|
|
|
|
apply_loop_filter = s->loop_filter && !(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY);
|
|
s->first_slice_line = 1;
|
|
memset(v->cbp_base, 0, sizeof(v->cbp_base[0]) * 3 * s->mb_stride);
|
|
for (s->mb_y = s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) {
|
|
s->mb_x = 0;
|
|
init_block_index(v);
|
|
for (; s->mb_x < s->mb_width; s->mb_x++) {
|
|
update_block_index(s);
|
|
|
|
if (v->fcm == ILACE_FIELD || (v->fcm == PROGRESSIVE && v->mv_type_is_raw) || v->skip_is_raw)
|
|
if (get_bits_left(&v->s.gb) <= 1) {
|
|
ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_x, s->mb_y, ER_MB_ERROR);
|
|
return;
|
|
}
|
|
|
|
if (v->fcm == ILACE_FIELD) {
|
|
ret = vc1_decode_p_mb_intfi(v);
|
|
if (apply_loop_filter)
|
|
ff_vc1_p_loop_filter(v);
|
|
} else if (v->fcm == ILACE_FRAME) {
|
|
ret = vc1_decode_p_mb_intfr(v);
|
|
if (apply_loop_filter)
|
|
ff_vc1_p_intfr_loop_filter(v);
|
|
} else {
|
|
ret = vc1_decode_p_mb(v);
|
|
if (apply_loop_filter)
|
|
ff_vc1_p_loop_filter(v);
|
|
}
|
|
if (ret < 0 || get_bits_left(&s->gb) < 0 || get_bits_count(&s->gb) < 0) {
|
|
// TODO: may need modification to handle slice coding
|
|
ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_x, s->mb_y, ER_MB_ERROR);
|
|
av_log(s->avctx, AV_LOG_ERROR, "Error or Bits overconsumption: %i > %i at %ix%i\n",
|
|
get_bits_count(&s->gb), s->gb.size_in_bits, s->mb_x, s->mb_y);
|
|
return;
|
|
}
|
|
inc_blk_idx(v->topleft_blk_idx);
|
|
inc_blk_idx(v->top_blk_idx);
|
|
inc_blk_idx(v->left_blk_idx);
|
|
inc_blk_idx(v->cur_blk_idx);
|
|
}
|
|
memmove(v->cbp_base,
|
|
v->cbp - s->mb_stride,
|
|
sizeof(v->cbp_base[0]) * 2 * s->mb_stride);
|
|
memmove(v->ttblk_base,
|
|
v->ttblk - s->mb_stride,
|
|
sizeof(v->ttblk_base[0]) * 2 * s->mb_stride);
|
|
memmove(v->is_intra_base,
|
|
v->is_intra - s->mb_stride,
|
|
sizeof(v->is_intra_base[0]) * 2 * s->mb_stride);
|
|
memmove(v->luma_mv_base,
|
|
v->luma_mv - s->mb_stride,
|
|
sizeof(v->luma_mv_base[0]) * 2 * s->mb_stride);
|
|
s->first_slice_line = 0;
|
|
}
|
|
ff_er_add_slice(&s->er, 0, s->start_mb_y << v->field_mode, s->mb_width - 1,
|
|
(s->end_mb_y << v->field_mode) - 1, ER_MB_END);
|
|
}
|
|
|
|
static void vc1_decode_b_blocks(VC1Context *v)
|
|
{
|
|
MpegEncContext *s = &v->s;
|
|
|
|
/* select coding mode used for VLC tables selection */
|
|
switch (v->c_ac_table_index) {
|
|
case 0:
|
|
v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
|
|
break;
|
|
case 1:
|
|
v->codingset = CS_HIGH_MOT_INTRA;
|
|
break;
|
|
case 2:
|
|
v->codingset = CS_MID_RATE_INTRA;
|
|
break;
|
|
}
|
|
|
|
switch (v->c_ac_table_index) {
|
|
case 0:
|
|
v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
|
|
break;
|
|
case 1:
|
|
v->codingset2 = CS_HIGH_MOT_INTER;
|
|
break;
|
|
case 2:
|
|
v->codingset2 = CS_MID_RATE_INTER;
|
|
break;
|
|
}
|
|
|
|
s->first_slice_line = 1;
|
|
for (s->mb_y = s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) {
|
|
s->mb_x = 0;
|
|
init_block_index(v);
|
|
for (; s->mb_x < s->mb_width; s->mb_x++) {
|
|
update_block_index(s);
|
|
|
|
if (v->fcm == ILACE_FIELD || v->skip_is_raw || v->dmb_is_raw)
|
|
if (get_bits_left(&v->s.gb) <= 1) {
|
|
ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_x, s->mb_y, ER_MB_ERROR);
|
|
return;
|
|
}
|
|
|
|
if (v->fcm == ILACE_FIELD) {
|
|
vc1_decode_b_mb_intfi(v);
|
|
if (v->s.loop_filter)
|
|
ff_vc1_b_intfi_loop_filter(v);
|
|
} else if (v->fcm == ILACE_FRAME) {
|
|
vc1_decode_b_mb_intfr(v);
|
|
if (v->s.loop_filter)
|
|
ff_vc1_p_intfr_loop_filter(v);
|
|
} else {
|
|
vc1_decode_b_mb(v);
|
|
if (v->s.loop_filter)
|
|
ff_vc1_i_loop_filter(v);
|
|
}
|
|
if (get_bits_left(&s->gb) < 0 || get_bits_count(&s->gb) < 0) {
|
|
// TODO: may need modification to handle slice coding
|
|
ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_x, s->mb_y, ER_MB_ERROR);
|
|
av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i at %ix%i\n",
|
|
get_bits_count(&s->gb), s->gb.size_in_bits, s->mb_x, s->mb_y);
|
|
return;
|
|
}
|
|
}
|
|
memmove(v->cbp_base,
|
|
v->cbp - s->mb_stride,
|
|
sizeof(v->cbp_base[0]) * 2 * s->mb_stride);
|
|
memmove(v->ttblk_base,
|
|
v->ttblk - s->mb_stride,
|
|
sizeof(v->ttblk_base[0]) * 2 * s->mb_stride);
|
|
memmove(v->is_intra_base,
|
|
v->is_intra - s->mb_stride,
|
|
sizeof(v->is_intra_base[0]) * 2 * s->mb_stride);
|
|
s->first_slice_line = 0;
|
|
}
|
|
ff_er_add_slice(&s->er, 0, s->start_mb_y << v->field_mode, s->mb_width - 1,
|
|
(s->end_mb_y << v->field_mode) - 1, ER_MB_END);
|
|
}
|
|
|
|
static void vc1_decode_skip_blocks(VC1Context *v)
|
|
{
|
|
MpegEncContext *s = &v->s;
|
|
|
|
if (!v->s.last_pic.data[0])
|
|
return;
|
|
|
|
ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_width - 1, s->end_mb_y - 1, ER_MB_END);
|
|
s->first_slice_line = 1;
|
|
for (s->mb_y = s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) {
|
|
s->mb_x = 0;
|
|
init_block_index(v);
|
|
update_block_index(s);
|
|
memcpy(s->dest[0], s->last_pic.data[0] + s->mb_y * 16 * s->linesize, s->linesize * 16);
|
|
memcpy(s->dest[1], s->last_pic.data[1] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
|
|
memcpy(s->dest[2], s->last_pic.data[2] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
|
|
s->first_slice_line = 0;
|
|
}
|
|
}
|
|
|
|
void ff_vc1_decode_blocks(VC1Context *v)
|
|
{
|
|
|
|
v->s.esc3_level_length = 0;
|
|
if (v->x8_type) {
|
|
ff_intrax8_decode_picture(&v->x8, v->s.cur_pic.ptr,
|
|
&v->s.gb, &v->s.mb_x, &v->s.mb_y,
|
|
2 * v->pq + v->halfpq, v->pq * !v->pquantizer,
|
|
v->s.loop_filter, v->s.low_delay);
|
|
|
|
ff_er_add_slice(&v->s.er, 0, 0,
|
|
(v->s.mb_x >> 1) - 1, (v->s.mb_y >> 1) - 1,
|
|
ER_MB_END);
|
|
} else {
|
|
v->cur_blk_idx = 0;
|
|
v->left_blk_idx = -1;
|
|
v->topleft_blk_idx = 1;
|
|
v->top_blk_idx = 2;
|
|
switch (v->s.pict_type) {
|
|
case AV_PICTURE_TYPE_I:
|
|
if (v->profile == PROFILE_ADVANCED)
|
|
vc1_decode_i_blocks_adv(v);
|
|
else
|
|
vc1_decode_i_blocks(v);
|
|
break;
|
|
case AV_PICTURE_TYPE_P:
|
|
if (v->p_frame_skipped)
|
|
vc1_decode_skip_blocks(v);
|
|
else
|
|
vc1_decode_p_blocks(v);
|
|
break;
|
|
case AV_PICTURE_TYPE_B:
|
|
if (v->bi_type) {
|
|
if (v->profile == PROFILE_ADVANCED)
|
|
vc1_decode_i_blocks_adv(v);
|
|
else
|
|
vc1_decode_i_blocks(v);
|
|
} else
|
|
vc1_decode_b_blocks(v);
|
|
break;
|
|
}
|
|
}
|
|
}
|