| /* |
| * 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 FFmpeg. |
| * |
| * FFmpeg 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. |
| * |
| * FFmpeg 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 FFmpeg; 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) { |
| int w = get_bits(gb, 11); |
| int h = get_bits(gb, 11); |
| avcodec_set_dimensions(v->s.avctx, w, h); |
| 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) |
| { |
| int w, h; |
| 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 |
| |
| w = (get_bits(gb, 12) + 1) << 1; |
| h = (get_bits(gb, 12) + 1) << 1; |
| avcodec_set_dimensions(v->s.avctx, w, h); |
| 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)){ |
| int w = (get_bits(gb, 12)+1)<<1; |
| int h = (get_bits(gb, 12)+1)<<1; |
| avcodec_set_dimensions(avctx, w, h); |
| } |
| 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->numref=0; |
| v->p_frame_skipped = 0; |
| if (v->second_field) { |
| if(v->fcm!=2 || v->field_mode!=1) |
| return -1; |
| 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(!ff_vc1_bfraction_vlc.table) |
| return 0; //parsing only, vlc tables havnt been allocated |
| 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; |
| av_log(v->s.avctx, AV_LOG_ERROR, "B Fields do not work currently\n"); |
| return -1; |
| 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; |
| } |
