LCOV - code coverage report
Current view: top level - libavcodec - dnxhddec.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 303 380 79.7 %
Date: 2017-12-11 04:34:20 Functions: 13 15 86.7 %

          Line data    Source code
       1             : /*
       2             :  * VC3/DNxHD decoder.
       3             :  * Copyright (c) 2007 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>
       4             :  * Copyright (c) 2011 MirriAd Ltd
       5             :  * Copyright (c) 2015 Christophe Gisquet
       6             :  *
       7             :  * 10 bit support added by MirriAd Ltd, Joseph Artsimovich <joseph@mirriad.com>
       8             :  * Slice multithreading and MB interlaced support added by Christophe Gisquet
       9             :  *
      10             :  * This file is part of FFmpeg.
      11             :  *
      12             :  * FFmpeg is free software; you can redistribute it and/or
      13             :  * modify it under the terms of the GNU Lesser General Public
      14             :  * License as published by the Free Software Foundation; either
      15             :  * version 2.1 of the License, or (at your option) any later version.
      16             :  *
      17             :  * FFmpeg is distributed in the hope that it will be useful,
      18             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      19             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      20             :  * Lesser General Public License for more details.
      21             :  *
      22             :  * You should have received a copy of the GNU Lesser General Public
      23             :  * License along with FFmpeg; if not, write to the Free Software
      24             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      25             :  */
      26             : 
      27             : #include "libavutil/imgutils.h"
      28             : #include "libavutil/timer.h"
      29             : #include "avcodec.h"
      30             : #include "blockdsp.h"
      31             : #define  UNCHECKED_BITSTREAM_READER 1
      32             : #include "get_bits.h"
      33             : #include "dnxhddata.h"
      34             : #include "idctdsp.h"
      35             : #include "internal.h"
      36             : #include "profiles.h"
      37             : #include "thread.h"
      38             : 
      39             : typedef struct RowContext {
      40             :     DECLARE_ALIGNED(16, int16_t, blocks)[12][64];
      41             :     int luma_scale[64];
      42             :     int chroma_scale[64];
      43             :     GetBitContext gb;
      44             :     int last_dc[3];
      45             :     int last_qscale;
      46             :     int errors;
      47             :     /** -1:not set yet  0:off=RGB  1:on=YUV  2:variable */
      48             :     int format;
      49             : } RowContext;
      50             : 
      51             : typedef struct DNXHDContext {
      52             :     AVCodecContext *avctx;
      53             :     RowContext *rows;
      54             :     BlockDSPContext bdsp;
      55             :     const uint8_t* buf;
      56             :     int buf_size;
      57             :     int64_t cid;                        ///< compression id
      58             :     unsigned int width, height;
      59             :     enum AVPixelFormat pix_fmt;
      60             :     unsigned int mb_width, mb_height;
      61             :     uint32_t mb_scan_index[512];
      62             :     int data_offset;                    // End of mb_scan_index, where macroblocks start
      63             :     int cur_field;                      ///< current interlaced field
      64             :     VLC ac_vlc, dc_vlc, run_vlc;
      65             :     IDCTDSPContext idsp;
      66             :     ScanTable scantable;
      67             :     const CIDEntry *cid_table;
      68             :     int bit_depth; // 8, 10, 12 or 0 if not initialized at all.
      69             :     int is_444;
      70             :     int mbaff;
      71             :     int act;
      72             :     int (*decode_dct_block)(const struct DNXHDContext *ctx,
      73             :                             RowContext *row, int n);
      74             : } DNXHDContext;
      75             : 
      76             : #define DNXHD_VLC_BITS 9
      77             : #define DNXHD_DC_VLC_BITS 7
      78             : 
      79             : static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx,
      80             :                                     RowContext *row, int n);
      81             : static int dnxhd_decode_dct_block_10(const DNXHDContext *ctx,
      82             :                                      RowContext *row, int n);
      83             : static int dnxhd_decode_dct_block_10_444(const DNXHDContext *ctx,
      84             :                                          RowContext *row, int n);
      85             : static int dnxhd_decode_dct_block_12(const DNXHDContext *ctx,
      86             :                                      RowContext *row, int n);
      87             : static int dnxhd_decode_dct_block_12_444(const DNXHDContext *ctx,
      88             :                                          RowContext *row, int n);
      89             : 
      90         149 : static av_cold int dnxhd_decode_init(AVCodecContext *avctx)
      91             : {
      92         149 :     DNXHDContext *ctx = avctx->priv_data;
      93             : 
      94         149 :     ctx->avctx = avctx;
      95         149 :     ctx->cid = -1;
      96         149 :     if (avctx->colorspace == AVCOL_SPC_UNSPECIFIED) {
      97          73 :         avctx->colorspace = AVCOL_SPC_BT709;
      98             :     }
      99             : 
     100         149 :     avctx->coded_width  = FFALIGN(avctx->width,  16);
     101         149 :     avctx->coded_height = FFALIGN(avctx->height, 16);
     102             : 
     103         149 :     ctx->rows = av_mallocz_array(avctx->thread_count, sizeof(RowContext));
     104         149 :     if (!ctx->rows)
     105           0 :         return AVERROR(ENOMEM);
     106             : 
     107         149 :     return 0;
     108             : }
     109             : 
     110         502 : static int dnxhd_init_vlc(DNXHDContext *ctx, uint32_t cid, int bitdepth)
     111             : {
     112         502 :     if (cid != ctx->cid) {
     113             :         int index;
     114             : 
     115         148 :         if ((index = ff_dnxhd_get_cid_table(cid)) < 0) {
     116           0 :             av_log(ctx->avctx, AV_LOG_ERROR, "unsupported cid %"PRIu32"\n", cid);
     117           0 :             return AVERROR(ENOSYS);
     118             :         }
     119         152 :         if (ff_dnxhd_cid_table[index].bit_depth != bitdepth &&
     120           4 :             ff_dnxhd_cid_table[index].bit_depth != DNXHD_VARIABLE) {
     121           0 :             av_log(ctx->avctx, AV_LOG_ERROR, "bit depth mismatches %d %d\n", ff_dnxhd_cid_table[index].bit_depth, bitdepth);
     122           0 :             return AVERROR_INVALIDDATA;
     123             :         }
     124         148 :         ctx->cid_table = &ff_dnxhd_cid_table[index];
     125         148 :         av_log(ctx->avctx, AV_LOG_VERBOSE, "Profile cid %"PRIu32".\n", cid);
     126             : 
     127         148 :         ff_free_vlc(&ctx->ac_vlc);
     128         148 :         ff_free_vlc(&ctx->dc_vlc);
     129         148 :         ff_free_vlc(&ctx->run_vlc);
     130             : 
     131         148 :         init_vlc(&ctx->ac_vlc, DNXHD_VLC_BITS, 257,
     132             :                  ctx->cid_table->ac_bits, 1, 1,
     133             :                  ctx->cid_table->ac_codes, 2, 2, 0);
     134         148 :         init_vlc(&ctx->dc_vlc, DNXHD_DC_VLC_BITS, bitdepth > 8 ? 14 : 12,
     135             :                  ctx->cid_table->dc_bits, 1, 1,
     136             :                  ctx->cid_table->dc_codes, 1, 1, 0);
     137         148 :         init_vlc(&ctx->run_vlc, DNXHD_VLC_BITS, 62,
     138             :                  ctx->cid_table->run_bits, 1, 1,
     139             :                  ctx->cid_table->run_codes, 2, 2, 0);
     140             : 
     141         148 :         ctx->cid = cid;
     142             :     }
     143         502 :     return 0;
     144             : }
     145             : 
     146           0 : static av_cold int dnxhd_decode_init_thread_copy(AVCodecContext *avctx)
     147             : {
     148           0 :     DNXHDContext *ctx = avctx->priv_data;
     149             : 
     150           0 :     ctx->avctx = avctx;
     151             :     // make sure VLC tables will be loaded when cid is parsed
     152           0 :     ctx->cid = -1;
     153             : 
     154           0 :     ctx->rows = av_mallocz_array(avctx->thread_count, sizeof(RowContext));
     155           0 :     if (!ctx->rows)
     156           0 :         return AVERROR(ENOMEM);
     157             : 
     158           0 :     return 0;
     159             : }
     160             : 
     161         502 : static int dnxhd_get_profile(int cid)
     162             : {
     163         502 :     switch(cid) {
     164           2 :     case 1270:
     165           2 :         return FF_PROFILE_DNXHR_444;
     166           2 :     case 1271:
     167           2 :         return FF_PROFILE_DNXHR_HQX;
     168         120 :     case 1272:
     169         120 :         return FF_PROFILE_DNXHR_HQ;
     170          48 :     case 1273:
     171          48 :         return FF_PROFILE_DNXHR_SQ;
     172         111 :     case 1274:
     173         111 :         return FF_PROFILE_DNXHR_LB;
     174             :     }
     175         219 :     return FF_PROFILE_DNXHD;
     176             : }
     177             : 
     178         502 : static int dnxhd_decode_header(DNXHDContext *ctx, AVFrame *frame,
     179             :                                const uint8_t *buf, int buf_size,
     180             :                                int first_field)
     181             : {
     182             :     int i, cid, ret;
     183         502 :     int old_bit_depth = ctx->bit_depth, bitdepth;
     184             :     uint64_t header_prefix;
     185         502 :     if (buf_size < 0x280) {
     186           0 :         av_log(ctx->avctx, AV_LOG_ERROR,
     187             :                "buffer too small (%d < 640).\n", buf_size);
     188           0 :         return AVERROR_INVALIDDATA;
     189             :     }
     190             : 
     191         502 :     header_prefix = ff_dnxhd_parse_header_prefix(buf);
     192         502 :     if (header_prefix == 0) {
     193           0 :         av_log(ctx->avctx, AV_LOG_ERROR,
     194             :                "unknown header 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X\n",
     195           0 :                buf[0], buf[1], buf[2], buf[3], buf[4]);
     196           0 :         return AVERROR_INVALIDDATA;
     197             :     }
     198         502 :     if (buf[5] & 2) { /* interlaced */
     199         134 :         ctx->cur_field = buf[5] & 1;
     200         134 :         frame->interlaced_frame = 1;
     201         134 :         frame->top_field_first  = first_field ^ ctx->cur_field;
     202         268 :         av_log(ctx->avctx, AV_LOG_DEBUG,
     203         134 :                "interlaced %d, cur field %d\n", buf[5] & 3, ctx->cur_field);
     204             :     } else {
     205         368 :         ctx->cur_field = 0;
     206             :     }
     207         502 :     ctx->mbaff = (buf[0x6] >> 5) & 1;
     208             : 
     209         502 :     ctx->height = AV_RB16(buf + 0x18);
     210         502 :     ctx->width  = AV_RB16(buf + 0x1a);
     211             : 
     212         502 :     switch(buf[0x21] >> 5) {
     213         432 :     case 1: bitdepth = 8; break;
     214          68 :     case 2: bitdepth = 10; break;
     215           2 :     case 3: bitdepth = 12; break;
     216           0 :     default:
     217           0 :         av_log(ctx->avctx, AV_LOG_ERROR,
     218           0 :                "Unknown bitdepth indicator (%d)\n", buf[0x21] >> 5);
     219           0 :         return AVERROR_INVALIDDATA;
     220             :     }
     221             : 
     222         502 :     cid = AV_RB32(buf + 0x28);
     223             : 
     224         502 :     ctx->avctx->profile = dnxhd_get_profile(cid);
     225             : 
     226         502 :     if ((ret = dnxhd_init_vlc(ctx, cid, bitdepth)) < 0)
     227           0 :         return ret;
     228         502 :     if (ctx->mbaff && ctx->cid_table->cid != 1260)
     229           0 :         av_log(ctx->avctx, AV_LOG_WARNING,
     230             :                "Adaptive MB interlace flag in an unsupported profile.\n");
     231             : 
     232         502 :     ctx->act = buf[0x2C] & 7;
     233         502 :     if (ctx->act && ctx->cid_table->cid != 1256 && ctx->cid_table->cid != 1270)
     234           0 :         av_log(ctx->avctx, AV_LOG_WARNING,
     235             :                "Adaptive color transform in an unsupported profile.\n");
     236             : 
     237         502 :     ctx->is_444 = (buf[0x2C] >> 6) & 1;
     238         502 :     if (ctx->is_444) {
     239           2 :         if (bitdepth == 8) {
     240           0 :             avpriv_request_sample(ctx->avctx, "4:4:4 8 bits");
     241           0 :             return AVERROR_INVALIDDATA;
     242           2 :         } else if (bitdepth == 10) {
     243           2 :             ctx->decode_dct_block = dnxhd_decode_dct_block_10_444;
     244           4 :             ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P10
     245           2 :                                     : AV_PIX_FMT_GBRP10;
     246             :         } else {
     247           0 :             ctx->decode_dct_block = dnxhd_decode_dct_block_12_444;
     248           0 :             ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P12
     249           0 :                                     : AV_PIX_FMT_GBRP12;
     250             :         }
     251         500 :     } else if (bitdepth == 12) {
     252           2 :         ctx->decode_dct_block = dnxhd_decode_dct_block_12;
     253           2 :         ctx->pix_fmt = AV_PIX_FMT_YUV422P12;
     254         498 :     } else if (bitdepth == 10) {
     255          66 :         if (ctx->avctx->profile == FF_PROFILE_DNXHR_HQX)
     256           0 :             ctx->decode_dct_block = dnxhd_decode_dct_block_10_444;
     257             :         else
     258          66 :             ctx->decode_dct_block = dnxhd_decode_dct_block_10;
     259          66 :         ctx->pix_fmt = AV_PIX_FMT_YUV422P10;
     260             :     } else {
     261         432 :         ctx->decode_dct_block = dnxhd_decode_dct_block_8;
     262         432 :         ctx->pix_fmt = AV_PIX_FMT_YUV422P;
     263             :     }
     264             : 
     265         502 :     ctx->avctx->bits_per_raw_sample = ctx->bit_depth = bitdepth;
     266         502 :     if (ctx->bit_depth != old_bit_depth) {
     267         148 :         ff_blockdsp_init(&ctx->bdsp, ctx->avctx);
     268         148 :         ff_idctdsp_init(&ctx->idsp, ctx->avctx);
     269         148 :         ff_init_scantable(ctx->idsp.idct_permutation, &ctx->scantable,
     270             :                           ff_zigzag_direct);
     271             :     }
     272             : 
     273             :     // make sure profile size constraints are respected
     274             :     // DNx100 allows 1920->1440 and 1280->960 subsampling
     275         787 :     if (ctx->width != ctx->cid_table->width &&
     276         285 :         ctx->cid_table->width != DNXHD_VARIABLE) {
     277           6 :         av_reduce(&ctx->avctx->sample_aspect_ratio.num,
     278           2 :                   &ctx->avctx->sample_aspect_ratio.den,
     279           4 :                   ctx->width, ctx->cid_table->width, 255);
     280           2 :         ctx->width = ctx->cid_table->width;
     281             :     }
     282             : 
     283         502 :     if (buf_size < ctx->cid_table->coding_unit_size) {
     284           0 :         av_log(ctx->avctx, AV_LOG_ERROR, "incorrect frame size (%d < %u).\n",
     285           0 :                buf_size, ctx->cid_table->coding_unit_size);
     286           0 :         return AVERROR_INVALIDDATA;
     287             :     }
     288             : 
     289         502 :     ctx->mb_width  = (ctx->width + 15)>> 4;
     290         502 :     ctx->mb_height = AV_RB16(buf + 0x16c);
     291             : 
     292         502 :     if ((ctx->height + 15) >> 4 == ctx->mb_height && frame->interlaced_frame)
     293         134 :         ctx->height <<= 1;
     294             : 
     295        1004 :     av_log(ctx->avctx, AV_LOG_VERBOSE, "%dx%d, 4:%s %d bits, MBAFF=%d ACT=%d\n",
     296         502 :            ctx->width, ctx->height, ctx->is_444 ? "4:4" : "2:2",
     297             :            ctx->bit_depth, ctx->mbaff, ctx->act);
     298             : 
     299             :     // Newer format supports variable mb_scan_index sizes
     300         502 :     if (ctx->mb_height > 68 && ff_dnxhd_check_header_prefix_hr(header_prefix)) {
     301         108 :         ctx->data_offset = 0x170 + (ctx->mb_height << 2);
     302             :     } else {
     303         394 :         if (ctx->mb_height > 68) {
     304           0 :             av_log(ctx->avctx, AV_LOG_ERROR,
     305             :                    "mb height too big: %d\n", ctx->mb_height);
     306           0 :             return AVERROR_INVALIDDATA;
     307             :         }
     308         394 :         ctx->data_offset = 0x280;
     309             :     }
     310         502 :     if ((ctx->mb_height << frame->interlaced_frame) > (ctx->height + 15) >> 4) {
     311           0 :         av_log(ctx->avctx, AV_LOG_ERROR,
     312             :                 "mb height too big: %d\n", ctx->mb_height);
     313           0 :         return AVERROR_INVALIDDATA;
     314             :     }
     315             : 
     316         502 :     if (buf_size < ctx->data_offset) {
     317           0 :         av_log(ctx->avctx, AV_LOG_ERROR,
     318             :                "buffer too small (%d < %d).\n", buf_size, ctx->data_offset);
     319           0 :         return AVERROR_INVALIDDATA;
     320             :     }
     321             : 
     322         502 :     if (ctx->mb_height > FF_ARRAY_ELEMS(ctx->mb_scan_index)) {
     323           0 :         av_log(ctx->avctx, AV_LOG_ERROR,
     324             :                "mb_height too big (%d > %"SIZE_SPECIFIER").\n", ctx->mb_height, FF_ARRAY_ELEMS(ctx->mb_scan_index));
     325           0 :         return AVERROR_INVALIDDATA;
     326             :     }
     327             : 
     328       30675 :     for (i = 0; i < ctx->mb_height; i++) {
     329       30173 :         ctx->mb_scan_index[i] = AV_RB32(buf + 0x170 + (i << 2));
     330             :         ff_dlog(ctx->avctx, "mb scan index %d, pos %d: %"PRIu32"\n",
     331             :                 i, 0x170 + (i << 2), ctx->mb_scan_index[i]);
     332       30173 :         if (buf_size - ctx->data_offset < ctx->mb_scan_index[i]) {
     333           0 :             av_log(ctx->avctx, AV_LOG_ERROR,
     334             :                    "invalid mb scan index (%"PRIu32" vs %u).\n",
     335           0 :                    ctx->mb_scan_index[i], buf_size - ctx->data_offset);
     336           0 :             return AVERROR_INVALIDDATA;
     337             :         }
     338             :     }
     339             : 
     340         502 :     return 0;
     341             : }
     342             : 
     343    34743936 : static av_always_inline int dnxhd_decode_dct_block(const DNXHDContext *ctx,
     344             :                                                    RowContext *row,
     345             :                                                    int n,
     346             :                                                    int index_bits,
     347             :                                                    int level_bias,
     348             :                                                    int level_shift,
     349             :                                                    int dc_shift)
     350             : {
     351             :     int i, j, index1, index2, len, flags;
     352             :     int level, component, sign;
     353             :     const int *scale;
     354             :     const uint8_t *weight_matrix;
     355    34743936 :     const uint8_t *ac_info = ctx->cid_table->ac_info;
     356    34743936 :     int16_t *block = row->blocks[n];
     357    34743936 :     const int eob_index     = ctx->cid_table->eob_index;
     358    34743936 :     int ret = 0;
     359    34743936 :     OPEN_READER(bs, &row->gb);
     360             : 
     361    34743936 :     ctx->bdsp.clear_block(block);
     362             : 
     363    34743936 :     if (!ctx->is_444) {
     364    34591296 :         if (n & 2) {
     365    17295648 :             component     = 1 + (n & 1);
     366    17295648 :             scale = row->chroma_scale;
     367    17295648 :             weight_matrix = ctx->cid_table->chroma_weight;
     368             :         } else {
     369    17295648 :             component     = 0;
     370    17295648 :             scale = row->luma_scale;
     371    17295648 :             weight_matrix = ctx->cid_table->luma_weight;
     372             :         }
     373             :     } else {
     374      152640 :         component = (n >> 1) % 3;
     375      152640 :         if (component) {
     376      101760 :             scale = row->chroma_scale;
     377      101760 :             weight_matrix = ctx->cid_table->chroma_weight;
     378             :         } else {
     379       50880 :             scale = row->luma_scale;
     380       50880 :             weight_matrix = ctx->cid_table->luma_weight;
     381             :         }
     382             :     }
     383             : 
     384    34743936 :     UPDATE_CACHE(bs, &row->gb);
     385    34743936 :     GET_VLC(len, bs, &row->gb, ctx->dc_vlc.table, DNXHD_DC_VLC_BITS, 1);
     386    34743936 :     if (len) {
     387    32365764 :         level = GET_CACHE(bs, &row->gb);
     388    32365764 :         LAST_SKIP_BITS(bs, &row->gb, len);
     389    32365764 :         sign  = ~level >> 31;
     390    32365764 :         level = (NEG_USR32(sign ^ level, len) ^ sign) - sign;
     391    32365764 :         row->last_dc[component] += level * (1 << dc_shift);
     392             :     }
     393    34743936 :     block[0] = row->last_dc[component];
     394             : 
     395    34743936 :     i = 0;
     396             : 
     397    34743936 :     UPDATE_CACHE(bs, &row->gb);
     398    34743936 :     GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
     399             :             DNXHD_VLC_BITS, 2);
     400             : 
     401   211682862 :     while (index1 != eob_index) {
     402   142194990 :         level = ac_info[2*index1+0];
     403   142194990 :         flags = ac_info[2*index1+1];
     404             : 
     405   142194990 :         sign = SHOW_SBITS(bs, &row->gb, 1);
     406   142194990 :         SKIP_BITS(bs, &row->gb, 1);
     407             : 
     408   142194990 :         if (flags & 1) {
     409     2609257 :             level += SHOW_UBITS(bs, &row->gb, index_bits) << 7;
     410     2609257 :             SKIP_BITS(bs, &row->gb, index_bits);
     411             :         }
     412             : 
     413   142194990 :         if (flags & 2) {
     414    46521250 :             UPDATE_CACHE(bs, &row->gb);
     415    46521250 :             GET_VLC(index2, bs, &row->gb, ctx->run_vlc.table,
     416             :                     DNXHD_VLC_BITS, 2);
     417    46521250 :             i += ctx->cid_table->run[index2];
     418             :         }
     419             : 
     420   142194990 :         if (++i > 63) {
     421           0 :             av_log(ctx->avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", n, i);
     422           0 :             ret = -1;
     423           0 :             break;
     424             :         }
     425             : 
     426   142194990 :         j     = ctx->scantable.permutated[i];
     427   142194990 :         level *= scale[i];
     428   142194990 :         level += scale[i] >> 1;
     429   142194990 :         if (level_bias < 32 || weight_matrix[i] != level_bias)
     430   117255903 :             level += level_bias; // 1<<(level_shift-1)
     431   142194990 :         level >>= level_shift;
     432             : 
     433   142194990 :         block[j] = (level ^ sign) - sign;
     434             : 
     435   142194990 :         UPDATE_CACHE(bs, &row->gb);
     436   142194990 :         GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
     437             :                 DNXHD_VLC_BITS, 2);
     438             :     }
     439             : 
     440    34743936 :     CLOSE_READER(bs, &row->gb);
     441    34743936 :     return ret;
     442             : }
     443             : 
     444    32375616 : static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx,
     445             :                                     RowContext *row, int n)
     446             : {
     447    32375616 :     return dnxhd_decode_dct_block(ctx, row, n, 4, 32, 6, 0);
     448             : }
     449             : 
     450     2085120 : static int dnxhd_decode_dct_block_10(const DNXHDContext *ctx,
     451             :                                      RowContext *row, int n)
     452             : {
     453     2085120 :     return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 0);
     454             : }
     455             : 
     456      152640 : static int dnxhd_decode_dct_block_10_444(const DNXHDContext *ctx,
     457             :                                          RowContext *row, int n)
     458             : {
     459      152640 :     return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 6, 0);
     460             : }
     461             : 
     462      130560 : static int dnxhd_decode_dct_block_12(const DNXHDContext *ctx,
     463             :                                      RowContext *row, int n)
     464             : {
     465      130560 :     return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 2);
     466             : }
     467             : 
     468           0 : static int dnxhd_decode_dct_block_12_444(const DNXHDContext *ctx,
     469             :                                          RowContext *row, int n)
     470             : {
     471           0 :     return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 4, 2);
     472             : }
     473             : 
     474     4336632 : static int dnxhd_decode_macroblock(const DNXHDContext *ctx, RowContext *row,
     475             :                                    AVFrame *frame, int x, int y)
     476             : {
     477     4336632 :     int shift1 = ctx->bit_depth >= 10;
     478     4336632 :     int dct_linesize_luma   = frame->linesize[0];
     479     4336632 :     int dct_linesize_chroma = frame->linesize[1];
     480             :     uint8_t *dest_y, *dest_u, *dest_v;
     481             :     int dct_y_offset, dct_x_offset;
     482             :     int qscale, i, act;
     483     4336632 :     int interlaced_mb = 0;
     484             : 
     485     4336632 :     if (ctx->mbaff) {
     486       12240 :         interlaced_mb = get_bits1(&row->gb);
     487       12240 :         qscale = get_bits(&row->gb, 10);
     488             :     } else {
     489     4324392 :         qscale = get_bits(&row->gb, 11);
     490             :     }
     491     4336632 :     act = get_bits1(&row->gb);
     492     4336632 :     if (act) {
     493       12720 :         if (!ctx->act) {
     494             :             static int act_warned;
     495           0 :             if (!act_warned) {
     496           0 :                 act_warned = 1;
     497           0 :                 av_log(ctx->avctx, AV_LOG_ERROR,
     498             :                        "ACT flag set, in violation of frame header.\n");
     499             :             }
     500       12720 :         } else if (row->format == -1) {
     501           2 :             row->format = act;
     502       12718 :         } else if (row->format != act) {
     503           0 :             row->format = 2; // Variable
     504             :         }
     505             :     }
     506             : 
     507     4336632 :     if (qscale != row->last_qscale) {
     508    23037300 :         for (i = 0; i < 64; i++) {
     509    22682880 :             row->luma_scale[i]   = qscale * ctx->cid_table->luma_weight[i];
     510    22682880 :             row->chroma_scale[i] = qscale * ctx->cid_table->chroma_weight[i];
     511             :         }
     512      354420 :         row->last_qscale = qscale;
     513             :     }
     514             : 
     515    39080568 :     for (i = 0; i < 8 + 4 * ctx->is_444; i++) {
     516    34743936 :         if (ctx->decode_dct_block(ctx, row, i) < 0)
     517           0 :             return AVERROR_INVALIDDATA;
     518             :     }
     519             : 
     520     4336632 :     if (frame->interlaced_frame) {
     521      546720 :         dct_linesize_luma   <<= 1;
     522      546720 :         dct_linesize_chroma <<= 1;
     523             :     }
     524             : 
     525     4336632 :     dest_y = frame->data[0] + ((y * dct_linesize_luma)   << 4) + (x << (4 + shift1));
     526     4336632 :     dest_u = frame->data[1] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
     527     4336632 :     dest_v = frame->data[2] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
     528             : 
     529     4336632 :     if (frame->interlaced_frame && ctx->cur_field) {
     530      273360 :         dest_y += frame->linesize[0];
     531      273360 :         dest_u += frame->linesize[1];
     532      273360 :         dest_v += frame->linesize[2];
     533             :     }
     534     4336632 :     if (interlaced_mb) {
     535        3224 :         dct_linesize_luma   <<= 1;
     536        3224 :         dct_linesize_chroma <<= 1;
     537             :     }
     538             : 
     539     4336632 :     dct_y_offset = interlaced_mb ? frame->linesize[0] : (dct_linesize_luma << 3);
     540     4336632 :     dct_x_offset = 8 << shift1;
     541     4336632 :     if (!ctx->is_444) {
     542     4323912 :         ctx->idsp.idct_put(dest_y,                               dct_linesize_luma, row->blocks[0]);
     543     4323912 :         ctx->idsp.idct_put(dest_y + dct_x_offset,                dct_linesize_luma, row->blocks[1]);
     544     4323912 :         ctx->idsp.idct_put(dest_y + dct_y_offset,                dct_linesize_luma, row->blocks[4]);
     545     4323912 :         ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[5]);
     546             : 
     547     4323912 :         if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
     548     4323912 :             dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
     549     4323912 :             ctx->idsp.idct_put(dest_u,                dct_linesize_chroma, row->blocks[2]);
     550     4323912 :             ctx->idsp.idct_put(dest_v,                dct_linesize_chroma, row->blocks[3]);
     551     4323912 :             ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[6]);
     552     4323912 :             ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[7]);
     553             :         }
     554             :     } else {
     555       12720 :         ctx->idsp.idct_put(dest_y,                               dct_linesize_luma, row->blocks[0]);
     556       12720 :         ctx->idsp.idct_put(dest_y + dct_x_offset,                dct_linesize_luma, row->blocks[1]);
     557       12720 :         ctx->idsp.idct_put(dest_y + dct_y_offset,                dct_linesize_luma, row->blocks[6]);
     558       12720 :         ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[7]);
     559             : 
     560       12720 :         if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
     561       12720 :             dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
     562       12720 :             ctx->idsp.idct_put(dest_u,                               dct_linesize_chroma, row->blocks[2]);
     563       12720 :             ctx->idsp.idct_put(dest_u + dct_x_offset,                dct_linesize_chroma, row->blocks[3]);
     564       12720 :             ctx->idsp.idct_put(dest_u + dct_y_offset,                dct_linesize_chroma, row->blocks[8]);
     565       12720 :             ctx->idsp.idct_put(dest_u + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[9]);
     566       12720 :             ctx->idsp.idct_put(dest_v,                               dct_linesize_chroma, row->blocks[4]);
     567       12720 :             ctx->idsp.idct_put(dest_v + dct_x_offset,                dct_linesize_chroma, row->blocks[5]);
     568       12720 :             ctx->idsp.idct_put(dest_v + dct_y_offset,                dct_linesize_chroma, row->blocks[10]);
     569       12720 :             ctx->idsp.idct_put(dest_v + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[11]);
     570             :         }
     571             :     }
     572             : 
     573     4336632 :     return 0;
     574             : }
     575             : 
     576       30173 : static int dnxhd_decode_row(AVCodecContext *avctx, void *data,
     577             :                             int rownb, int threadnb)
     578             : {
     579       30173 :     const DNXHDContext *ctx = avctx->priv_data;
     580       30173 :     uint32_t offset = ctx->mb_scan_index[rownb];
     581       30173 :     RowContext *row = ctx->rows + threadnb;
     582             :     int x;
     583             : 
     584       30173 :     row->last_dc[0] =
     585       30173 :     row->last_dc[1] =
     586       30173 :     row->last_dc[2] = 1 << (ctx->bit_depth + 2); // for levels +2^(bitdepth-1)
     587       30173 :     init_get_bits(&row->gb, ctx->buf + offset, (ctx->buf_size - offset) << 3);
     588     4366805 :     for (x = 0; x < ctx->mb_width; x++) {
     589             :         //START_TIMER;
     590     4336632 :         int ret = dnxhd_decode_macroblock(ctx, row, data, x, rownb);
     591     4336632 :         if (ret < 0) {
     592           0 :             row->errors++;
     593           0 :             return ret;
     594             :         }
     595             :         //STOP_TIMER("decode macroblock");
     596             :     }
     597             : 
     598       30173 :     return 0;
     599             : }
     600             : 
     601         435 : static int dnxhd_decode_frame(AVCodecContext *avctx, void *data,
     602             :                               int *got_frame, AVPacket *avpkt)
     603             : {
     604         435 :     const uint8_t *buf = avpkt->data;
     605         435 :     int buf_size = avpkt->size;
     606         435 :     DNXHDContext *ctx = avctx->priv_data;
     607         435 :     ThreadFrame frame = { .f = data };
     608         435 :     AVFrame *picture = data;
     609         435 :     int first_field = 1;
     610             :     int ret, i;
     611             : 
     612             :     ff_dlog(avctx, "frame size %d\n", buf_size);
     613             : 
     614         870 :     for (i = 0; i < avctx->thread_count; i++)
     615         435 :         ctx->rows[i].format = -1;
     616             : 
     617         435 : decode_coding_unit:
     618         502 :     if ((ret = dnxhd_decode_header(ctx, picture, buf, buf_size, first_field)) < 0)
     619           0 :         return ret;
     620             : 
     621         958 :     if ((avctx->width || avctx->height) &&
     622         912 :         (ctx->width != avctx->width || ctx->height != avctx->height)) {
     623           2 :         av_log(avctx, AV_LOG_WARNING, "frame size changed: %dx%d -> %ux%u\n",
     624             :                avctx->width, avctx->height, ctx->width, ctx->height);
     625           2 :         first_field = 1;
     626             :     }
     627         502 :     if (avctx->pix_fmt != AV_PIX_FMT_NONE && avctx->pix_fmt != ctx->pix_fmt) {
     628           0 :         av_log(avctx, AV_LOG_WARNING, "pix_fmt changed: %s -> %s\n",
     629             :                av_get_pix_fmt_name(avctx->pix_fmt), av_get_pix_fmt_name(ctx->pix_fmt));
     630           0 :         first_field = 1;
     631             :     }
     632             : 
     633         502 :     avctx->pix_fmt = ctx->pix_fmt;
     634         502 :     ret = ff_set_dimensions(avctx, ctx->width, ctx->height);
     635         502 :     if (ret < 0)
     636           0 :         return ret;
     637             : 
     638         502 :     if (first_field) {
     639         435 :         if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
     640           0 :             return ret;
     641         435 :         picture->pict_type = AV_PICTURE_TYPE_I;
     642         435 :         picture->key_frame = 1;
     643             :     }
     644             : 
     645         502 :     ctx->buf_size = buf_size - ctx->data_offset;
     646         502 :     ctx->buf = buf + ctx->data_offset;
     647         502 :     avctx->execute2(avctx, dnxhd_decode_row, picture, NULL, ctx->mb_height);
     648             : 
     649         502 :     if (first_field && picture->interlaced_frame) {
     650          67 :         buf      += ctx->cid_table->coding_unit_size;
     651          67 :         buf_size -= ctx->cid_table->coding_unit_size;
     652          67 :         first_field = 0;
     653          67 :         goto decode_coding_unit;
     654             :     }
     655             : 
     656         435 :     ret = 0;
     657         870 :     for (i = 0; i < avctx->thread_count; i++) {
     658         435 :         ret += ctx->rows[i].errors;
     659         435 :         ctx->rows[i].errors = 0;
     660             :     }
     661             : 
     662         435 :     if (ctx->act) {
     663             :         static int act_warned;
     664           2 :         int format = ctx->rows[0].format;
     665           2 :         for (i = 1; i < avctx->thread_count; i++) {
     666           0 :             if (ctx->rows[i].format != format &&
     667           0 :                 ctx->rows[i].format != -1 /* not run */) {
     668           0 :                 format = 2;
     669           0 :                 break;
     670             :             }
     671             :         }
     672           2 :         switch (format) {
     673           0 :         case -1:
     674             :         case 2:
     675           0 :             if (!act_warned) {
     676           0 :                 act_warned = 1;
     677           0 :                 av_log(ctx->avctx, AV_LOG_ERROR,
     678             :                        "Unsupported: variable ACT flag.\n");
     679             :             }
     680           0 :             break;
     681           0 :         case 0:
     682           0 :             ctx->pix_fmt = ctx->bit_depth==10
     683           0 :                          ? AV_PIX_FMT_GBRP10 : AV_PIX_FMT_GBRP12;
     684           0 :             break;
     685           2 :         case 1:
     686           4 :             ctx->pix_fmt = ctx->bit_depth==10
     687           2 :                          ? AV_PIX_FMT_YUV444P10 : AV_PIX_FMT_YUV444P12;
     688           2 :             break;
     689             :         }
     690             :     }
     691         435 :     avctx->pix_fmt = ctx->pix_fmt;
     692         435 :     if (ret) {
     693           0 :         av_log(ctx->avctx, AV_LOG_ERROR, "%d lines with errors\n", ret);
     694           0 :         return AVERROR_INVALIDDATA;
     695             :     }
     696             : 
     697         435 :     *got_frame = 1;
     698         435 :     return avpkt->size;
     699             : }
     700             : 
     701         149 : static av_cold int dnxhd_decode_close(AVCodecContext *avctx)
     702             : {
     703         149 :     DNXHDContext *ctx = avctx->priv_data;
     704             : 
     705         149 :     ff_free_vlc(&ctx->ac_vlc);
     706         149 :     ff_free_vlc(&ctx->dc_vlc);
     707         149 :     ff_free_vlc(&ctx->run_vlc);
     708             : 
     709         149 :     av_freep(&ctx->rows);
     710             : 
     711         149 :     return 0;
     712             : }
     713             : 
     714             : AVCodec ff_dnxhd_decoder = {
     715             :     .name           = "dnxhd",
     716             :     .long_name      = NULL_IF_CONFIG_SMALL("VC3/DNxHD"),
     717             :     .type           = AVMEDIA_TYPE_VIDEO,
     718             :     .id             = AV_CODEC_ID_DNXHD,
     719             :     .priv_data_size = sizeof(DNXHDContext),
     720             :     .init           = dnxhd_decode_init,
     721             :     .close          = dnxhd_decode_close,
     722             :     .decode         = dnxhd_decode_frame,
     723             :     .capabilities   = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
     724             :                       AV_CODEC_CAP_SLICE_THREADS,
     725             :     .init_thread_copy = ONLY_IF_THREADS_ENABLED(dnxhd_decode_init_thread_copy),
     726             :     .profiles       = NULL_IF_CONFIG_SMALL(ff_dnxhd_profiles),
     727             : };

Generated by: LCOV version 1.13