mirror of
https://git.videolan.org/git/ffmpeg.git
synced 2024-08-22 01:05:05 +02:00
![Hendrik Leppkes](/assets/img/avatar_default.png)
Previously, it would not be read if refdist_flag was not set, however according to the spec and the reference decoder, it should always be read. Signed-off-by: Kostya Shishkov <kostya.shishkov@gmail.com>
1242 lines
45 KiB
C
1242 lines
45 KiB
C
/*
|
|
* VC-1 and WMV3 decoder common code
|
|
* Copyright (c) 2011 Mashiat Sarker Shakkhar
|
|
* Copyright (c) 2006-2007 Konstantin Shishkov
|
|
* Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer
|
|
*
|
|
* This file is part of Libav.
|
|
*
|
|
* Libav is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* Libav is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with Libav; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* VC-1 and WMV3 decoder common code
|
|
*
|
|
*/
|
|
|
|
#include "internal.h"
|
|
#include "dsputil.h"
|
|
#include "avcodec.h"
|
|
#include "mpegvideo.h"
|
|
#include "vc1.h"
|
|
#include "vc1data.h"
|
|
#include "msmpeg4data.h"
|
|
#include "unary.h"
|
|
#include "simple_idct.h"
|
|
|
|
#undef NDEBUG
|
|
#include <assert.h>
|
|
|
|
/***********************************************************************/
|
|
/**
|
|
* @name VC-1 Bitplane decoding
|
|
* @see 8.7, p56
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* Imode types
|
|
* @{
|
|
*/
|
|
enum Imode {
|
|
IMODE_RAW,
|
|
IMODE_NORM2,
|
|
IMODE_DIFF2,
|
|
IMODE_NORM6,
|
|
IMODE_DIFF6,
|
|
IMODE_ROWSKIP,
|
|
IMODE_COLSKIP
|
|
};
|
|
/** @} */ //imode defines
|
|
|
|
/** Decode rows by checking if they are skipped
|
|
* @param plane Buffer to store decoded bits
|
|
* @param[in] width Width of this buffer
|
|
* @param[in] height Height of this buffer
|
|
* @param[in] stride of this buffer
|
|
*/
|
|
static void decode_rowskip(uint8_t* plane, int width, int height, int stride,
|
|
GetBitContext *gb)
|
|
{
|
|
int x, y;
|
|
|
|
for (y = 0; y < height; y++) {
|
|
if (!get_bits1(gb)) //rowskip
|
|
memset(plane, 0, width);
|
|
else
|
|
for (x = 0; x < width; x++)
|
|
plane[x] = get_bits1(gb);
|
|
plane += stride;
|
|
}
|
|
}
|
|
|
|
/** Decode columns by checking if they are skipped
|
|
* @param plane Buffer to store decoded bits
|
|
* @param[in] width Width of this buffer
|
|
* @param[in] height Height of this buffer
|
|
* @param[in] stride of this buffer
|
|
* @todo FIXME: Optimize
|
|
*/
|
|
static void decode_colskip(uint8_t* plane, int width, int height, int stride,
|
|
GetBitContext *gb)
|
|
{
|
|
int x, y;
|
|
|
|
for (x = 0; x < width; x++) {
|
|
if (!get_bits1(gb)) //colskip
|
|
for (y = 0; y < height; y++)
|
|
plane[y*stride] = 0;
|
|
else
|
|
for (y = 0; y < height; y++)
|
|
plane[y*stride] = get_bits1(gb);
|
|
plane ++;
|
|
}
|
|
}
|
|
|
|
/** Decode a bitplane's bits
|
|
* @param data bitplane where to store the decode bits
|
|
* @param[out] raw_flag pointer to the flag indicating that this bitplane is not coded explicitly
|
|
* @param v VC-1 context for bit reading and logging
|
|
* @return Status
|
|
* @todo FIXME: Optimize
|
|
*/
|
|
static int bitplane_decoding(uint8_t* data, int *raw_flag, VC1Context *v)
|
|
{
|
|
GetBitContext *gb = &v->s.gb;
|
|
|
|
int imode, x, y, code, offset;
|
|
uint8_t invert, *planep = data;
|
|
int width, height, stride;
|
|
|
|
width = v->s.mb_width;
|
|
height = v->s.mb_height >> v->field_mode;
|
|
stride = v->s.mb_stride;
|
|
invert = get_bits1(gb);
|
|
imode = get_vlc2(gb, ff_vc1_imode_vlc.table, VC1_IMODE_VLC_BITS, 1);
|
|
|
|
*raw_flag = 0;
|
|
switch (imode) {
|
|
case IMODE_RAW:
|
|
//Data is actually read in the MB layer (same for all tests == "raw")
|
|
*raw_flag = 1; //invert ignored
|
|
return invert;
|
|
case IMODE_DIFF2:
|
|
case IMODE_NORM2:
|
|
if ((height * width) & 1) {
|
|
*planep++ = get_bits1(gb);
|
|
offset = 1;
|
|
}
|
|
else
|
|
offset = 0;
|
|
// decode bitplane as one long line
|
|
for (y = offset; y < height * width; y += 2) {
|
|
code = get_vlc2(gb, ff_vc1_norm2_vlc.table, VC1_NORM2_VLC_BITS, 1);
|
|
*planep++ = code & 1;
|
|
offset++;
|
|
if (offset == width) {
|
|
offset = 0;
|
|
planep += stride - width;
|
|
}
|
|
*planep++ = code >> 1;
|
|
offset++;
|
|
if (offset == width) {
|
|
offset = 0;
|
|
planep += stride - width;
|
|
}
|
|
}
|
|
break;
|
|
case IMODE_DIFF6:
|
|
case IMODE_NORM6:
|
|
if (!(height % 3) && (width % 3)) { // use 2x3 decoding
|
|
for (y = 0; y < height; y += 3) {
|
|
for (x = width & 1; x < width; x += 2) {
|
|
code = get_vlc2(gb, ff_vc1_norm6_vlc.table, VC1_NORM6_VLC_BITS, 2);
|
|
if (code < 0) {
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
|
|
return -1;
|
|
}
|
|
planep[x + 0] = (code >> 0) & 1;
|
|
planep[x + 1] = (code >> 1) & 1;
|
|
planep[x + 0 + stride] = (code >> 2) & 1;
|
|
planep[x + 1 + stride] = (code >> 3) & 1;
|
|
planep[x + 0 + stride * 2] = (code >> 4) & 1;
|
|
planep[x + 1 + stride * 2] = (code >> 5) & 1;
|
|
}
|
|
planep += stride * 3;
|
|
}
|
|
if (width & 1)
|
|
decode_colskip(data, 1, height, stride, &v->s.gb);
|
|
} else { // 3x2
|
|
planep += (height & 1) * stride;
|
|
for (y = height & 1; y < height; y += 2) {
|
|
for (x = width % 3; x < width; x += 3) {
|
|
code = get_vlc2(gb, ff_vc1_norm6_vlc.table, VC1_NORM6_VLC_BITS, 2);
|
|
if (code < 0) {
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
|
|
return -1;
|
|
}
|
|
planep[x + 0] = (code >> 0) & 1;
|
|
planep[x + 1] = (code >> 1) & 1;
|
|
planep[x + 2] = (code >> 2) & 1;
|
|
planep[x + 0 + stride] = (code >> 3) & 1;
|
|
planep[x + 1 + stride] = (code >> 4) & 1;
|
|
planep[x + 2 + stride] = (code >> 5) & 1;
|
|
}
|
|
planep += stride * 2;
|
|
}
|
|
x = width % 3;
|
|
if (x)
|
|
decode_colskip(data, x, height, stride, &v->s.gb);
|
|
if (height & 1)
|
|
decode_rowskip(data + x, width - x, 1, stride, &v->s.gb);
|
|
}
|
|
break;
|
|
case IMODE_ROWSKIP:
|
|
decode_rowskip(data, width, height, stride, &v->s.gb);
|
|
break;
|
|
case IMODE_COLSKIP:
|
|
decode_colskip(data, width, height, stride, &v->s.gb);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/* Applying diff operator */
|
|
if (imode == IMODE_DIFF2 || imode == IMODE_DIFF6) {
|
|
planep = data;
|
|
planep[0] ^= invert;
|
|
for (x = 1; x < width; x++)
|
|
planep[x] ^= planep[x-1];
|
|
for (y = 1; y < height; y++) {
|
|
planep += stride;
|
|
planep[0] ^= planep[-stride];
|
|
for (x = 1; x < width; x++) {
|
|
if (planep[x-1] != planep[x-stride]) planep[x] ^= invert;
|
|
else planep[x] ^= planep[x-1];
|
|
}
|
|
}
|
|
} else if (invert) {
|
|
planep = data;
|
|
for (x = 0; x < stride * height; x++)
|
|
planep[x] = !planep[x]; //FIXME stride
|
|
}
|
|
return (imode << 1) + invert;
|
|
}
|
|
|
|
/** @} */ //Bitplane group
|
|
|
|
/***********************************************************************/
|
|
/** VOP Dquant decoding
|
|
* @param v VC-1 Context
|
|
*/
|
|
static int vop_dquant_decoding(VC1Context *v)
|
|
{
|
|
GetBitContext *gb = &v->s.gb;
|
|
int pqdiff;
|
|
|
|
//variable size
|
|
if (v->dquant == 2) {
|
|
pqdiff = get_bits(gb, 3);
|
|
if (pqdiff == 7)
|
|
v->altpq = get_bits(gb, 5);
|
|
else
|
|
v->altpq = v->pq + pqdiff + 1;
|
|
} else {
|
|
v->dquantfrm = get_bits1(gb);
|
|
if (v->dquantfrm) {
|
|
v->dqprofile = get_bits(gb, 2);
|
|
switch (v->dqprofile) {
|
|
case DQPROFILE_SINGLE_EDGE:
|
|
case DQPROFILE_DOUBLE_EDGES:
|
|
v->dqsbedge = get_bits(gb, 2);
|
|
break;
|
|
case DQPROFILE_ALL_MBS:
|
|
v->dqbilevel = get_bits1(gb);
|
|
if (!v->dqbilevel)
|
|
v->halfpq = 0;
|
|
default:
|
|
break; //Forbidden ?
|
|
}
|
|
if (v->dqbilevel || v->dqprofile != DQPROFILE_ALL_MBS) {
|
|
pqdiff = get_bits(gb, 3);
|
|
if (pqdiff == 7)
|
|
v->altpq = get_bits(gb, 5);
|
|
else
|
|
v->altpq = v->pq + pqdiff + 1;
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb);
|
|
|
|
/**
|
|
* Decode Simple/Main Profiles sequence header
|
|
* @see Figure 7-8, p16-17
|
|
* @param avctx Codec context
|
|
* @param gb GetBit context initialized from Codec context extra_data
|
|
* @return Status
|
|
*/
|
|
int vc1_decode_sequence_header(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
|
|
{
|
|
av_log(avctx, AV_LOG_DEBUG, "Header: %0X\n", show_bits(gb, 32));
|
|
v->profile = get_bits(gb, 2);
|
|
if (v->profile == PROFILE_COMPLEX) {
|
|
av_log(avctx, AV_LOG_WARNING, "WMV3 Complex Profile is not fully supported\n");
|
|
}
|
|
|
|
if (v->profile == PROFILE_ADVANCED) {
|
|
v->zz_8x4 = ff_vc1_adv_progressive_8x4_zz;
|
|
v->zz_4x8 = ff_vc1_adv_progressive_4x8_zz;
|
|
return decode_sequence_header_adv(v, gb);
|
|
} else {
|
|
v->zz_8x4 = wmv2_scantableA;
|
|
v->zz_4x8 = wmv2_scantableB;
|
|
v->res_y411 = get_bits1(gb);
|
|
v->res_sprite = get_bits1(gb);
|
|
if (v->res_y411) {
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"Old interlaced mode is not supported\n");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
// (fps-2)/4 (->30)
|
|
v->frmrtq_postproc = get_bits(gb, 3); //common
|
|
// (bitrate-32kbps)/64kbps
|
|
v->bitrtq_postproc = get_bits(gb, 5); //common
|
|
v->s.loop_filter = get_bits1(gb); //common
|
|
if (v->s.loop_filter == 1 && v->profile == PROFILE_SIMPLE) {
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"LOOPFILTER shall not be enabled in Simple Profile\n");
|
|
}
|
|
if (v->s.avctx->skip_loop_filter >= AVDISCARD_ALL)
|
|
v->s.loop_filter = 0;
|
|
|
|
v->res_x8 = get_bits1(gb); //reserved
|
|
v->multires = get_bits1(gb);
|
|
v->res_fasttx = get_bits1(gb);
|
|
if (!v->res_fasttx) {
|
|
v->vc1dsp.vc1_inv_trans_8x8 = ff_simple_idct_8;
|
|
v->vc1dsp.vc1_inv_trans_8x4 = ff_simple_idct84_add;
|
|
v->vc1dsp.vc1_inv_trans_4x8 = ff_simple_idct48_add;
|
|
v->vc1dsp.vc1_inv_trans_4x4 = ff_simple_idct44_add;
|
|
v->vc1dsp.vc1_inv_trans_8x8_dc = ff_simple_idct_add_8;
|
|
v->vc1dsp.vc1_inv_trans_8x4_dc = ff_simple_idct84_add;
|
|
v->vc1dsp.vc1_inv_trans_4x8_dc = ff_simple_idct48_add;
|
|
v->vc1dsp.vc1_inv_trans_4x4_dc = ff_simple_idct44_add;
|
|
}
|
|
|
|
v->fastuvmc = get_bits1(gb); //common
|
|
if (!v->profile && !v->fastuvmc) {
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"FASTUVMC unavailable in Simple Profile\n");
|
|
return -1;
|
|
}
|
|
v->extended_mv = get_bits1(gb); //common
|
|
if (!v->profile && v->extended_mv)
|
|
{
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"Extended MVs unavailable in Simple Profile\n");
|
|
return -1;
|
|
}
|
|
v->dquant = get_bits(gb, 2); //common
|
|
v->vstransform = get_bits1(gb); //common
|
|
|
|
v->res_transtab = get_bits1(gb);
|
|
if (v->res_transtab)
|
|
{
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"1 for reserved RES_TRANSTAB is forbidden\n");
|
|
return -1;
|
|
}
|
|
|
|
v->overlap = get_bits1(gb); //common
|
|
|
|
v->s.resync_marker = get_bits1(gb);
|
|
v->rangered = get_bits1(gb);
|
|
if (v->rangered && v->profile == PROFILE_SIMPLE) {
|
|
av_log(avctx, AV_LOG_INFO,
|
|
"RANGERED should be set to 0 in Simple Profile\n");
|
|
}
|
|
|
|
v->s.max_b_frames = avctx->max_b_frames = get_bits(gb, 3); //common
|
|
v->quantizer_mode = get_bits(gb, 2); //common
|
|
|
|
v->finterpflag = get_bits1(gb); //common
|
|
|
|
if (v->res_sprite) {
|
|
v->s.avctx->width = v->s.avctx->coded_width = get_bits(gb, 11);
|
|
v->s.avctx->height = v->s.avctx->coded_height = get_bits(gb, 11);
|
|
skip_bits(gb, 5); //frame rate
|
|
v->res_x8 = get_bits1(gb);
|
|
if (get_bits1(gb)) { // something to do with DC VLC selection
|
|
av_log(avctx, AV_LOG_ERROR, "Unsupported sprite feature\n");
|
|
return -1;
|
|
}
|
|
skip_bits(gb, 3); //slice code
|
|
v->res_rtm_flag = 0;
|
|
} else {
|
|
v->res_rtm_flag = get_bits1(gb); //reserved
|
|
}
|
|
if (!v->res_rtm_flag) {
|
|
// av_log(avctx, AV_LOG_ERROR,
|
|
// "0 for reserved RES_RTM_FLAG is forbidden\n");
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"Old WMV3 version detected, some frames may be decoded incorrectly\n");
|
|
//return -1;
|
|
}
|
|
//TODO: figure out what they mean (always 0x402F)
|
|
if (!v->res_fasttx)
|
|
skip_bits(gb, 16);
|
|
av_log(avctx, AV_LOG_DEBUG,
|
|
"Profile %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
|
|
"LoopFilter=%i, MultiRes=%i, FastUVMC=%i, Extended MV=%i\n"
|
|
"Rangered=%i, VSTransform=%i, Overlap=%i, SyncMarker=%i\n"
|
|
"DQuant=%i, Quantizer mode=%i, Max B frames=%i\n",
|
|
v->profile, v->frmrtq_postproc, v->bitrtq_postproc,
|
|
v->s.loop_filter, v->multires, v->fastuvmc, v->extended_mv,
|
|
v->rangered, v->vstransform, v->overlap, v->s.resync_marker,
|
|
v->dquant, v->quantizer_mode, avctx->max_b_frames);
|
|
return 0;
|
|
}
|
|
|
|
static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb)
|
|
{
|
|
v->res_rtm_flag = 1;
|
|
v->level = get_bits(gb, 3);
|
|
if (v->level >= 5) {
|
|
av_log(v->s.avctx, AV_LOG_ERROR, "Reserved LEVEL %i\n",v->level);
|
|
}
|
|
v->chromaformat = get_bits(gb, 2);
|
|
if (v->chromaformat != 1) {
|
|
av_log(v->s.avctx, AV_LOG_ERROR,
|
|
"Only 4:2:0 chroma format supported\n");
|
|
return -1;
|
|
}
|
|
|
|
// (fps-2)/4 (->30)
|
|
v->frmrtq_postproc = get_bits(gb, 3); //common
|
|
// (bitrate-32kbps)/64kbps
|
|
v->bitrtq_postproc = get_bits(gb, 5); //common
|
|
v->postprocflag = get_bits1(gb); //common
|
|
|
|
v->s.avctx->coded_width = (get_bits(gb, 12) + 1) << 1;
|
|
v->s.avctx->coded_height = (get_bits(gb, 12) + 1) << 1;
|
|
v->s.avctx->width = v->s.avctx->coded_width;
|
|
v->s.avctx->height = v->s.avctx->coded_height;
|
|
v->broadcast = get_bits1(gb);
|
|
v->interlace = get_bits1(gb);
|
|
v->tfcntrflag = get_bits1(gb);
|
|
v->finterpflag = get_bits1(gb);
|
|
skip_bits1(gb); // reserved
|
|
|
|
av_log(v->s.avctx, AV_LOG_DEBUG,
|
|
"Advanced Profile level %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
|
|
"LoopFilter=%i, ChromaFormat=%i, Pulldown=%i, Interlace: %i\n"
|
|
"TFCTRflag=%i, FINTERPflag=%i\n",
|
|
v->level, v->frmrtq_postproc, v->bitrtq_postproc,
|
|
v->s.loop_filter, v->chromaformat, v->broadcast, v->interlace,
|
|
v->tfcntrflag, v->finterpflag);
|
|
|
|
v->psf = get_bits1(gb);
|
|
if (v->psf) { //PsF, 6.1.13
|
|
av_log(v->s.avctx, AV_LOG_ERROR, "Progressive Segmented Frame mode: not supported (yet)\n");
|
|
return -1;
|
|
}
|
|
v->s.max_b_frames = v->s.avctx->max_b_frames = 7;
|
|
if (get_bits1(gb)) { //Display Info - decoding is not affected by it
|
|
int w, h, ar = 0;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "Display extended info:\n");
|
|
w = get_bits(gb, 14) + 1;
|
|
h = get_bits(gb, 14) + 1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "Display dimensions: %ix%i\n", w, h);
|
|
if (get_bits1(gb))
|
|
ar = get_bits(gb, 4);
|
|
if (ar && ar < 14) {
|
|
v->s.avctx->sample_aspect_ratio = ff_vc1_pixel_aspect[ar];
|
|
} else if (ar == 15) {
|
|
w = get_bits(gb, 8) + 1;
|
|
h = get_bits(gb, 8) + 1;
|
|
v->s.avctx->sample_aspect_ratio = (AVRational){w, h};
|
|
} else {
|
|
av_reduce(&v->s.avctx->sample_aspect_ratio.num,
|
|
&v->s.avctx->sample_aspect_ratio.den,
|
|
v->s.avctx->height * w,
|
|
v->s.avctx->width * h,
|
|
1 << 30);
|
|
}
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "Aspect: %i:%i\n",
|
|
v->s.avctx->sample_aspect_ratio.num,
|
|
v->s.avctx->sample_aspect_ratio.den);
|
|
|
|
if (get_bits1(gb)) { //framerate stuff
|
|
if (get_bits1(gb)) {
|
|
v->s.avctx->time_base.num = 32;
|
|
v->s.avctx->time_base.den = get_bits(gb, 16) + 1;
|
|
} else {
|
|
int nr, dr;
|
|
nr = get_bits(gb, 8);
|
|
dr = get_bits(gb, 4);
|
|
if (nr && nr < 8 && dr && dr < 3) {
|
|
v->s.avctx->time_base.num = ff_vc1_fps_dr[dr - 1];
|
|
v->s.avctx->time_base.den = ff_vc1_fps_nr[nr - 1] * 1000;
|
|
}
|
|
}
|
|
if (v->broadcast) { // Pulldown may be present
|
|
v->s.avctx->time_base.den *= 2;
|
|
v->s.avctx->ticks_per_frame = 2;
|
|
}
|
|
}
|
|
|
|
if (get_bits1(gb)) {
|
|
v->color_prim = get_bits(gb, 8);
|
|
v->transfer_char = get_bits(gb, 8);
|
|
v->matrix_coef = get_bits(gb, 8);
|
|
}
|
|
}
|
|
|
|
v->hrd_param_flag = get_bits1(gb);
|
|
if (v->hrd_param_flag) {
|
|
int i;
|
|
v->hrd_num_leaky_buckets = get_bits(gb, 5);
|
|
skip_bits(gb, 4); //bitrate exponent
|
|
skip_bits(gb, 4); //buffer size exponent
|
|
for (i = 0; i < v->hrd_num_leaky_buckets; i++) {
|
|
skip_bits(gb, 16); //hrd_rate[n]
|
|
skip_bits(gb, 16); //hrd_buffer[n]
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int vc1_decode_entry_point(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
|
|
{
|
|
int i;
|
|
|
|
av_log(avctx, AV_LOG_DEBUG, "Entry point: %08X\n", show_bits_long(gb, 32));
|
|
v->broken_link = get_bits1(gb);
|
|
v->closed_entry = get_bits1(gb);
|
|
v->panscanflag = get_bits1(gb);
|
|
v->refdist_flag = get_bits1(gb);
|
|
v->s.loop_filter = get_bits1(gb);
|
|
v->fastuvmc = get_bits1(gb);
|
|
v->extended_mv = get_bits1(gb);
|
|
v->dquant = get_bits(gb, 2);
|
|
v->vstransform = get_bits1(gb);
|
|
v->overlap = get_bits1(gb);
|
|
v->quantizer_mode = get_bits(gb, 2);
|
|
|
|
if (v->hrd_param_flag) {
|
|
for (i = 0; i < v->hrd_num_leaky_buckets; i++) {
|
|
skip_bits(gb, 8); //hrd_full[n]
|
|
}
|
|
}
|
|
|
|
if (get_bits1(gb)) {
|
|
avctx->width = avctx->coded_width = (get_bits(gb, 12) + 1) << 1;
|
|
avctx->height = avctx->coded_height = (get_bits(gb, 12) + 1) << 1;
|
|
}
|
|
if (v->extended_mv)
|
|
v->extended_dmv = get_bits1(gb);
|
|
if ((v->range_mapy_flag = get_bits1(gb))) {
|
|
av_log(avctx, AV_LOG_ERROR, "Luma scaling is not supported, expect wrong picture\n");
|
|
v->range_mapy = get_bits(gb, 3);
|
|
}
|
|
if ((v->range_mapuv_flag = get_bits1(gb))) {
|
|
av_log(avctx, AV_LOG_ERROR, "Chroma scaling is not supported, expect wrong picture\n");
|
|
v->range_mapuv = get_bits(gb, 3);
|
|
}
|
|
|
|
av_log(avctx, AV_LOG_DEBUG, "Entry point info:\n"
|
|
"BrokenLink=%i, ClosedEntry=%i, PanscanFlag=%i\n"
|
|
"RefDist=%i, Postproc=%i, FastUVMC=%i, ExtMV=%i\n"
|
|
"DQuant=%i, VSTransform=%i, Overlap=%i, Qmode=%i\n",
|
|
v->broken_link, v->closed_entry, v->panscanflag, v->refdist_flag, v->s.loop_filter,
|
|
v->fastuvmc, v->extended_mv, v->dquant, v->vstransform, v->overlap, v->quantizer_mode);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int vc1_parse_frame_header(VC1Context *v, GetBitContext* gb)
|
|
{
|
|
int pqindex, lowquant, status;
|
|
|
|
if (v->finterpflag)
|
|
v->interpfrm = get_bits1(gb);
|
|
skip_bits(gb, 2); //framecnt unused
|
|
v->rangeredfrm = 0;
|
|
if (v->rangered)
|
|
v->rangeredfrm = get_bits1(gb);
|
|
v->s.pict_type = get_bits1(gb);
|
|
if (v->s.avctx->max_b_frames) {
|
|
if (!v->s.pict_type) {
|
|
if (get_bits1(gb))
|
|
v->s.pict_type = AV_PICTURE_TYPE_I;
|
|
else
|
|
v->s.pict_type = AV_PICTURE_TYPE_B;
|
|
} else
|
|
v->s.pict_type = AV_PICTURE_TYPE_P;
|
|
} else
|
|
v->s.pict_type = v->s.pict_type ? AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I;
|
|
|
|
v->bi_type = 0;
|
|
if (v->s.pict_type == AV_PICTURE_TYPE_B) {
|
|
v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
|
|
v->bfraction = ff_vc1_bfraction_lut[v->bfraction_lut_index];
|
|
if (v->bfraction == 0) {
|
|
v->s.pict_type = AV_PICTURE_TYPE_BI;
|
|
}
|
|
}
|
|
if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)
|
|
skip_bits(gb, 7); // skip buffer fullness
|
|
|
|
if (v->parse_only)
|
|
return 0;
|
|
|
|
/* calculate RND */
|
|
if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)
|
|
v->rnd = 1;
|
|
if (v->s.pict_type == AV_PICTURE_TYPE_P)
|
|
v->rnd ^= 1;
|
|
|
|
/* Quantizer stuff */
|
|
pqindex = get_bits(gb, 5);
|
|
if (!pqindex)
|
|
return -1;
|
|
if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
|
|
v->pq = ff_vc1_pquant_table[0][pqindex];
|
|
else
|
|
v->pq = ff_vc1_pquant_table[1][pqindex];
|
|
|
|
v->pquantizer = 1;
|
|
if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
|
|
v->pquantizer = pqindex < 9;
|
|
if (v->quantizer_mode == QUANT_NON_UNIFORM)
|
|
v->pquantizer = 0;
|
|
v->pqindex = pqindex;
|
|
if (pqindex < 9)
|
|
v->halfpq = get_bits1(gb);
|
|
else
|
|
v->halfpq = 0;
|
|
if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
|
|
v->pquantizer = get_bits1(gb);
|
|
v->dquantfrm = 0;
|
|
if (v->extended_mv == 1)
|
|
v->mvrange = get_unary(gb, 0, 3);
|
|
v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
|
|
v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
|
|
v->range_x = 1 << (v->k_x - 1);
|
|
v->range_y = 1 << (v->k_y - 1);
|
|
if (v->multires && v->s.pict_type != AV_PICTURE_TYPE_B)
|
|
v->respic = get_bits(gb, 2);
|
|
|
|
if (v->res_x8 && (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)) {
|
|
v->x8_type = get_bits1(gb);
|
|
} else
|
|
v->x8_type = 0;
|
|
//av_log(v->s.avctx, AV_LOG_INFO, "%c Frame: QP=[%i]%i (+%i/2) %i\n",
|
|
// (v->s.pict_type == AV_PICTURE_TYPE_P) ? 'P' : ((v->s.pict_type == AV_PICTURE_TYPE_I) ? 'I' : 'B'), pqindex, v->pq, v->halfpq, v->rangeredfrm);
|
|
|
|
if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_P)
|
|
v->use_ic = 0;
|
|
|
|
switch (v->s.pict_type) {
|
|
case AV_PICTURE_TYPE_P:
|
|
if (v->pq < 5) v->tt_index = 0;
|
|
else if (v->pq < 13) v->tt_index = 1;
|
|
else v->tt_index = 2;
|
|
|
|
lowquant = (v->pq > 12) ? 0 : 1;
|
|
v->mv_mode = ff_vc1_mv_pmode_table[lowquant][get_unary(gb, 1, 4)];
|
|
if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {
|
|
int scale, shift, i;
|
|
v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][get_unary(gb, 1, 3)];
|
|
v->lumscale = get_bits(gb, 6);
|
|
v->lumshift = get_bits(gb, 6);
|
|
v->use_ic = 1;
|
|
/* fill lookup tables for intensity compensation */
|
|
if (!v->lumscale) {
|
|
scale = -64;
|
|
shift = (255 - v->lumshift * 2) << 6;
|
|
if (v->lumshift > 31)
|
|
shift += 128 << 6;
|
|
} else {
|
|
scale = v->lumscale + 32;
|
|
if (v->lumshift > 31)
|
|
shift = (v->lumshift - 64) << 6;
|
|
else
|
|
shift = v->lumshift << 6;
|
|
}
|
|
for (i = 0; i < 256; i++) {
|
|
v->luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6);
|
|
v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6);
|
|
}
|
|
}
|
|
v->qs_last = v->s.quarter_sample;
|
|
if (v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
|
|
v->s.quarter_sample = 0;
|
|
else if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {
|
|
if (v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)
|
|
v->s.quarter_sample = 0;
|
|
else
|
|
v->s.quarter_sample = 1;
|
|
} else
|
|
v->s.quarter_sample = 1;
|
|
v->s.mspel = !(v->mv_mode == MV_PMODE_1MV_HPEL_BILIN || (v->mv_mode == MV_PMODE_INTENSITY_COMP && v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN));
|
|
|
|
if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
|
|
v->mv_mode2 == MV_PMODE_MIXED_MV) ||
|
|
v->mv_mode == MV_PMODE_MIXED_MV) {
|
|
status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
|
|
if (status < 0)
|
|
return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
} else {
|
|
v->mv_type_is_raw = 0;
|
|
memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
|
|
}
|
|
status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
|
|
if (status < 0)
|
|
return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
|
|
/* Hopefully this is correct for P frames */
|
|
v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
|
|
v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
|
|
|
|
if (v->dquant) {
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
|
|
vop_dquant_decoding(v);
|
|
}
|
|
|
|
v->ttfrm = 0; //FIXME Is that so ?
|
|
if (v->vstransform) {
|
|
v->ttmbf = get_bits1(gb);
|
|
if (v->ttmbf) {
|
|
v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
|
|
}
|
|
} else {
|
|
v->ttmbf = 1;
|
|
v->ttfrm = TT_8X8;
|
|
}
|
|
break;
|
|
case AV_PICTURE_TYPE_B:
|
|
if (v->pq < 5) v->tt_index = 0;
|
|
else if (v->pq < 13) v->tt_index = 1;
|
|
else v->tt_index = 2;
|
|
|
|
v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
|
|
v->qs_last = v->s.quarter_sample;
|
|
v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
|
|
v->s.mspel = v->s.quarter_sample;
|
|
|
|
status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
|
|
if (status < 0)
|
|
return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
|
|
if (status < 0)
|
|
return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
|
|
v->s.mv_table_index = get_bits(gb, 2);
|
|
v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
|
|
|
|
if (v->dquant) {
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
|
|
vop_dquant_decoding(v);
|
|
}
|
|
|
|
v->ttfrm = 0;
|
|
if (v->vstransform) {
|
|
v->ttmbf = get_bits1(gb);
|
|
if (v->ttmbf) {
|
|
v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
|
|
}
|
|
} else {
|
|
v->ttmbf = 1;
|
|
v->ttfrm = TT_8X8;
|
|
}
|
|
break;
|
|
}
|
|
|
|
if (!v->x8_type) {
|
|
/* AC Syntax */
|
|
v->c_ac_table_index = decode012(gb);
|
|
if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI) {
|
|
v->y_ac_table_index = decode012(gb);
|
|
}
|
|
/* DC Syntax */
|
|
v->s.dc_table_index = get_bits1(gb);
|
|
}
|
|
|
|
if (v->s.pict_type == AV_PICTURE_TYPE_BI) {
|
|
v->s.pict_type = AV_PICTURE_TYPE_B;
|
|
v->bi_type = 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* fill lookup tables for intensity compensation */
|
|
#define INIT_LUT(lumscale, lumshift, luty, lutuv) \
|
|
if (!lumscale) { \
|
|
scale = -64; \
|
|
shift = (255 - lumshift * 2) << 6; \
|
|
if (lumshift > 31) \
|
|
shift += 128 << 6; \
|
|
} else { \
|
|
scale = lumscale + 32; \
|
|
if (lumshift > 31) \
|
|
shift = (lumshift - 64) << 6; \
|
|
else \
|
|
shift = lumshift << 6; \
|
|
} \
|
|
for (i = 0; i < 256; i++) { \
|
|
luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6); \
|
|
lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6); \
|
|
}
|
|
|
|
int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
|
|
{
|
|
int pqindex, lowquant;
|
|
int status;
|
|
int mbmodetab, imvtab, icbptab, twomvbptab, fourmvbptab; /* useful only for debugging */
|
|
int scale, shift, i; /* for initializing LUT for intensity compensation */
|
|
|
|
v->p_frame_skipped = 0;
|
|
if (v->second_field) {
|
|
v->s.pict_type = (v->fptype & 1) ? AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I;
|
|
if (v->fptype & 4)
|
|
v->s.pict_type = (v->fptype & 1) ? AV_PICTURE_TYPE_BI : AV_PICTURE_TYPE_B;
|
|
v->s.current_picture_ptr->f.pict_type = v->s.pict_type;
|
|
if (!v->pic_header_flag)
|
|
goto parse_common_info;
|
|
}
|
|
|
|
v->field_mode = 0;
|
|
if (v->interlace) {
|
|
v->fcm = decode012(gb);
|
|
if (v->fcm) {
|
|
if (v->fcm == ILACE_FIELD)
|
|
v->field_mode = 1;
|
|
if (!v->warn_interlaced++)
|
|
av_log(v->s.avctx, AV_LOG_ERROR,
|
|
"Interlaced frames/fields support is incomplete\n");
|
|
}
|
|
} else {
|
|
v->fcm = PROGRESSIVE;
|
|
}
|
|
|
|
if (v->field_mode) {
|
|
v->fptype = get_bits(gb, 3);
|
|
v->s.pict_type = (v->fptype & 2) ? AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I;
|
|
if (v->fptype & 4) // B-picture
|
|
v->s.pict_type = (v->fptype & 2) ? AV_PICTURE_TYPE_BI : AV_PICTURE_TYPE_B;
|
|
} else {
|
|
switch (get_unary(gb, 0, 4)) {
|
|
case 0:
|
|
v->s.pict_type = AV_PICTURE_TYPE_P;
|
|
break;
|
|
case 1:
|
|
v->s.pict_type = AV_PICTURE_TYPE_B;
|
|
break;
|
|
case 2:
|
|
v->s.pict_type = AV_PICTURE_TYPE_I;
|
|
break;
|
|
case 3:
|
|
v->s.pict_type = AV_PICTURE_TYPE_BI;
|
|
break;
|
|
case 4:
|
|
v->s.pict_type = AV_PICTURE_TYPE_P; // skipped pic
|
|
v->p_frame_skipped = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (v->tfcntrflag)
|
|
skip_bits(gb, 8);
|
|
if (v->broadcast) {
|
|
if (!v->interlace || v->psf) {
|
|
v->rptfrm = get_bits(gb, 2);
|
|
} else {
|
|
v->tff = get_bits1(gb);
|
|
v->rff = get_bits1(gb);
|
|
}
|
|
}
|
|
if (v->panscanflag) {
|
|
av_log_missing_feature(v->s.avctx, "Pan-scan", 0);
|
|
//...
|
|
}
|
|
if (v->p_frame_skipped) {
|
|
return 0;
|
|
}
|
|
v->rnd = get_bits1(gb);
|
|
if (v->interlace)
|
|
v->uvsamp = get_bits1(gb);
|
|
if (v->field_mode) {
|
|
if (!v->refdist_flag)
|
|
v->refdist = 0;
|
|
else if ((v->s.pict_type != AV_PICTURE_TYPE_B) && (v->s.pict_type != AV_PICTURE_TYPE_BI)) {
|
|
v->refdist = get_bits(gb, 2);
|
|
if (v->refdist == 3)
|
|
v->refdist += get_unary(gb, 0, 16);
|
|
}
|
|
if ((v->s.pict_type == AV_PICTURE_TYPE_B) || (v->s.pict_type == AV_PICTURE_TYPE_BI)) {
|
|
v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
|
|
v->bfraction = ff_vc1_bfraction_lut[v->bfraction_lut_index];
|
|
v->frfd = (v->bfraction * v->refdist) >> 8;
|
|
v->brfd = v->refdist - v->frfd - 1;
|
|
if (v->brfd < 0)
|
|
v->brfd = 0;
|
|
}
|
|
goto parse_common_info;
|
|
}
|
|
if (v->fcm == PROGRESSIVE) {
|
|
if (v->finterpflag)
|
|
v->interpfrm = get_bits1(gb);
|
|
if (v->s.pict_type == AV_PICTURE_TYPE_B) {
|
|
v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
|
|
v->bfraction = ff_vc1_bfraction_lut[v->bfraction_lut_index];
|
|
if (v->bfraction == 0) {
|
|
v->s.pict_type = AV_PICTURE_TYPE_BI; /* XXX: should not happen here */
|
|
}
|
|
}
|
|
}
|
|
|
|
parse_common_info:
|
|
if (v->field_mode)
|
|
v->cur_field_type = !(v->tff ^ v->second_field);
|
|
pqindex = get_bits(gb, 5);
|
|
if (!pqindex)
|
|
return -1;
|
|
v->pqindex = pqindex;
|
|
if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
|
|
v->pq = ff_vc1_pquant_table[0][pqindex];
|
|
else
|
|
v->pq = ff_vc1_pquant_table[1][pqindex];
|
|
|
|
v->pquantizer = 1;
|
|
if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
|
|
v->pquantizer = pqindex < 9;
|
|
if (v->quantizer_mode == QUANT_NON_UNIFORM)
|
|
v->pquantizer = 0;
|
|
v->pqindex = pqindex;
|
|
if (pqindex < 9)
|
|
v->halfpq = get_bits1(gb);
|
|
else
|
|
v->halfpq = 0;
|
|
if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
|
|
v->pquantizer = get_bits1(gb);
|
|
if (v->postprocflag)
|
|
v->postproc = get_bits(gb, 2);
|
|
|
|
if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_P)
|
|
v->use_ic = 0;
|
|
|
|
if (v->parse_only)
|
|
return 0;
|
|
|
|
switch (v->s.pict_type) {
|
|
case AV_PICTURE_TYPE_I:
|
|
case AV_PICTURE_TYPE_BI:
|
|
if (v->fcm == ILACE_FRAME) { //interlace frame picture
|
|
status = bitplane_decoding(v->fieldtx_plane, &v->fieldtx_is_raw, v);
|
|
if (status < 0)
|
|
return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "FIELDTX plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
}
|
|
status = bitplane_decoding(v->acpred_plane, &v->acpred_is_raw, v);
|
|
if (status < 0)
|
|
return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "ACPRED plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
v->condover = CONDOVER_NONE;
|
|
if (v->overlap && v->pq <= 8) {
|
|
v->condover = decode012(gb);
|
|
if (v->condover == CONDOVER_SELECT) {
|
|
status = bitplane_decoding(v->over_flags_plane, &v->overflg_is_raw, v);
|
|
if (status < 0)
|
|
return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "CONDOVER plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
}
|
|
}
|
|
break;
|
|
case AV_PICTURE_TYPE_P:
|
|
if (v->field_mode) {
|
|
v->numref = get_bits1(gb);
|
|
if (!v->numref) {
|
|
v->reffield = get_bits1(gb);
|
|
v->ref_field_type[0] = v->reffield ^ !v->cur_field_type;
|
|
}
|
|
}
|
|
if (v->extended_mv)
|
|
v->mvrange = get_unary(gb, 0, 3);
|
|
else
|
|
v->mvrange = 0;
|
|
if (v->interlace) {
|
|
if (v->extended_dmv)
|
|
v->dmvrange = get_unary(gb, 0, 3);
|
|
else
|
|
v->dmvrange = 0;
|
|
if (v->fcm == ILACE_FRAME) { // interlaced frame picture
|
|
v->fourmvswitch = get_bits1(gb);
|
|
v->intcomp = get_bits1(gb);
|
|
if (v->intcomp) {
|
|
v->lumscale = get_bits(gb, 6);
|
|
v->lumshift = get_bits(gb, 6);
|
|
INIT_LUT(v->lumscale, v->lumshift, v->luty, v->lutuv);
|
|
}
|
|
status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "SKIPMB plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
mbmodetab = get_bits(gb, 2);
|
|
if (v->fourmvswitch)
|
|
v->mbmode_vlc = &ff_vc1_intfr_4mv_mbmode_vlc[mbmodetab];
|
|
else
|
|
v->mbmode_vlc = &ff_vc1_intfr_non4mv_mbmode_vlc[mbmodetab];
|
|
imvtab = get_bits(gb, 2);
|
|
v->imv_vlc = &ff_vc1_1ref_mvdata_vlc[imvtab];
|
|
// interlaced p-picture cbpcy range is [1, 63]
|
|
icbptab = get_bits(gb, 3);
|
|
v->cbpcy_vlc = &ff_vc1_icbpcy_vlc[icbptab];
|
|
twomvbptab = get_bits(gb, 2);
|
|
v->twomvbp_vlc = &ff_vc1_2mv_block_pattern_vlc[twomvbptab];
|
|
if (v->fourmvswitch) {
|
|
fourmvbptab = get_bits(gb, 2);
|
|
v->fourmvbp_vlc = &ff_vc1_4mv_block_pattern_vlc[fourmvbptab];
|
|
}
|
|
}
|
|
}
|
|
v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
|
|
v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
|
|
v->range_x = 1 << (v->k_x - 1);
|
|
v->range_y = 1 << (v->k_y - 1);
|
|
|
|
if (v->pq < 5)
|
|
v->tt_index = 0;
|
|
else if (v->pq < 13)
|
|
v->tt_index = 1;
|
|
else
|
|
v->tt_index = 2;
|
|
if (v->fcm != ILACE_FRAME) {
|
|
int mvmode;
|
|
mvmode = get_unary(gb, 1, 4);
|
|
lowquant = (v->pq > 12) ? 0 : 1;
|
|
v->mv_mode = ff_vc1_mv_pmode_table[lowquant][mvmode];
|
|
if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {
|
|
int mvmode2;
|
|
mvmode2 = get_unary(gb, 1, 3);
|
|
v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][mvmode2];
|
|
if (v->field_mode)
|
|
v->intcompfield = decode210(gb);
|
|
v->lumscale = get_bits(gb, 6);
|
|
v->lumshift = get_bits(gb, 6);
|
|
INIT_LUT(v->lumscale, v->lumshift, v->luty, v->lutuv);
|
|
if ((v->field_mode) && !v->intcompfield) {
|
|
v->lumscale2 = get_bits(gb, 6);
|
|
v->lumshift2 = get_bits(gb, 6);
|
|
INIT_LUT(v->lumscale2, v->lumshift2, v->luty2, v->lutuv2);
|
|
}
|
|
v->use_ic = 1;
|
|
}
|
|
v->qs_last = v->s.quarter_sample;
|
|
if (v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
|
|
v->s.quarter_sample = 0;
|
|
else if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {
|
|
if (v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)
|
|
v->s.quarter_sample = 0;
|
|
else
|
|
v->s.quarter_sample = 1;
|
|
} else
|
|
v->s.quarter_sample = 1;
|
|
v->s.mspel = !(v->mv_mode == MV_PMODE_1MV_HPEL_BILIN
|
|
|| (v->mv_mode == MV_PMODE_INTENSITY_COMP
|
|
&& v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN));
|
|
}
|
|
if (v->fcm == PROGRESSIVE) { // progressive
|
|
if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
|
|
v->mv_mode2 == MV_PMODE_MIXED_MV)
|
|
|| v->mv_mode == MV_PMODE_MIXED_MV) {
|
|
status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
|
|
if (status < 0)
|
|
return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
} else {
|
|
v->mv_type_is_raw = 0;
|
|
memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
|
|
}
|
|
status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
|
|
if (status < 0)
|
|
return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
|
|
/* Hopefully this is correct for P frames */
|
|
v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
|
|
v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
|
|
} else if (v->fcm == ILACE_FRAME) { // frame interlaced
|
|
v->qs_last = v->s.quarter_sample;
|
|
v->s.quarter_sample = 1;
|
|
v->s.mspel = 1;
|
|
} else { // field interlaced
|
|
mbmodetab = get_bits(gb, 3);
|
|
imvtab = get_bits(gb, 2 + v->numref);
|
|
if (!v->numref)
|
|
v->imv_vlc = &ff_vc1_1ref_mvdata_vlc[imvtab];
|
|
else
|
|
v->imv_vlc = &ff_vc1_2ref_mvdata_vlc[imvtab];
|
|
icbptab = get_bits(gb, 3);
|
|
v->cbpcy_vlc = &ff_vc1_icbpcy_vlc[icbptab];
|
|
if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
|
|
v->mv_mode2 == MV_PMODE_MIXED_MV) || v->mv_mode == MV_PMODE_MIXED_MV) {
|
|
fourmvbptab = get_bits(gb, 2);
|
|
v->fourmvbp_vlc = &ff_vc1_4mv_block_pattern_vlc[fourmvbptab];
|
|
v->mbmode_vlc = &ff_vc1_if_mmv_mbmode_vlc[mbmodetab];
|
|
} else {
|
|
v->mbmode_vlc = &ff_vc1_if_1mv_mbmode_vlc[mbmodetab];
|
|
}
|
|
}
|
|
if (v->dquant) {
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
|
|
vop_dquant_decoding(v);
|
|
}
|
|
|
|
v->ttfrm = 0; //FIXME Is that so ?
|
|
if (v->vstransform) {
|
|
v->ttmbf = get_bits1(gb);
|
|
if (v->ttmbf) {
|
|
v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
|
|
}
|
|
} else {
|
|
v->ttmbf = 1;
|
|
v->ttfrm = TT_8X8;
|
|
}
|
|
break;
|
|
case AV_PICTURE_TYPE_B:
|
|
// TODO: implement interlaced frame B picture decoding
|
|
if (v->fcm == ILACE_FRAME)
|
|
return -1;
|
|
if (v->extended_mv)
|
|
v->mvrange = get_unary(gb, 0, 3);
|
|
else
|
|
v->mvrange = 0;
|
|
v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
|
|
v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
|
|
v->range_x = 1 << (v->k_x - 1);
|
|
v->range_y = 1 << (v->k_y - 1);
|
|
|
|
if (v->pq < 5)
|
|
v->tt_index = 0;
|
|
else if (v->pq < 13)
|
|
v->tt_index = 1;
|
|
else
|
|
v->tt_index = 2;
|
|
|
|
if (v->field_mode) {
|
|
int mvmode;
|
|
if (v->extended_dmv)
|
|
v->dmvrange = get_unary(gb, 0, 3);
|
|
mvmode = get_unary(gb, 1, 3);
|
|
lowquant = (v->pq > 12) ? 0 : 1;
|
|
v->mv_mode = ff_vc1_mv_pmode_table2[lowquant][mvmode];
|
|
v->qs_last = v->s.quarter_sample;
|
|
v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV || v->mv_mode == MV_PMODE_MIXED_MV);
|
|
v->s.mspel = !(v->mv_mode == MV_PMODE_1MV_HPEL_BILIN || v->mv_mode == MV_PMODE_1MV_HPEL);
|
|
status = bitplane_decoding(v->forward_mb_plane, &v->fmb_is_raw, v);
|
|
if (status < 0)
|
|
return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "MB Forward Type plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
mbmodetab = get_bits(gb, 3);
|
|
if (v->mv_mode == MV_PMODE_MIXED_MV)
|
|
v->mbmode_vlc = &ff_vc1_if_mmv_mbmode_vlc[mbmodetab];
|
|
else
|
|
v->mbmode_vlc = &ff_vc1_if_1mv_mbmode_vlc[mbmodetab];
|
|
imvtab = get_bits(gb, 3);
|
|
v->imv_vlc = &ff_vc1_2ref_mvdata_vlc[imvtab];
|
|
icbptab = get_bits(gb, 3);
|
|
v->cbpcy_vlc = &ff_vc1_icbpcy_vlc[icbptab];
|
|
if (v->mv_mode == MV_PMODE_MIXED_MV) {
|
|
fourmvbptab = get_bits(gb, 2);
|
|
v->fourmvbp_vlc = &ff_vc1_4mv_block_pattern_vlc[fourmvbptab];
|
|
}
|
|
v->numref = 1; // interlaced field B pictures are always 2-ref
|
|
} else {
|
|
v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
|
|
v->qs_last = v->s.quarter_sample;
|
|
v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
|
|
v->s.mspel = v->s.quarter_sample;
|
|
status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
|
|
if (status < 0)
|
|
return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
|
|
if (status < 0)
|
|
return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
v->s.mv_table_index = get_bits(gb, 2);
|
|
v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
|
|
}
|
|
|
|
if (v->dquant) {
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
|
|
vop_dquant_decoding(v);
|
|
}
|
|
|
|
v->ttfrm = 0;
|
|
if (v->vstransform) {
|
|
v->ttmbf = get_bits1(gb);
|
|
if (v->ttmbf) {
|
|
v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
|
|
}
|
|
} else {
|
|
v->ttmbf = 1;
|
|
v->ttfrm = TT_8X8;
|
|
}
|
|
break;
|
|
}
|
|
|
|
/* AC Syntax */
|
|
v->c_ac_table_index = decode012(gb);
|
|
if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI) {
|
|
v->y_ac_table_index = decode012(gb);
|
|
}
|
|
/* DC Syntax */
|
|
v->s.dc_table_index = get_bits1(gb);
|
|
if ((v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)
|
|
&& v->dquant) {
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
|
|
vop_dquant_decoding(v);
|
|
}
|
|
|
|
v->bi_type = 0;
|
|
if (v->s.pict_type == AV_PICTURE_TYPE_BI) {
|
|
v->s.pict_type = AV_PICTURE_TYPE_B;
|
|
v->bi_type = 1;
|
|
}
|
|
return 0;
|
|
}
|