LCOV - code coverage report
Current view: top level - libavcodec - h2645_parse.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 153 181 84.5 %
Date: 2018-05-20 11:54:08 Functions: 9 9 100.0 %

          Line data    Source code
       1             : /*
       2             :  * H.264/HEVC common parsing code
       3             :  *
       4             :  * This file is part of FFmpeg.
       5             :  *
       6             :  * FFmpeg is free software; you can redistribute it and/or
       7             :  * modify it under the terms of the GNU Lesser General Public
       8             :  * License as published by the Free Software Foundation; either
       9             :  * version 2.1 of the License, or (at your option) any later version.
      10             :  *
      11             :  * FFmpeg is distributed in the hope that it will be useful,
      12             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      13             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      14             :  * Lesser General Public License for more details.
      15             :  *
      16             :  * You should have received a copy of the GNU Lesser General Public
      17             :  * License along with FFmpeg; if not, write to the Free Software
      18             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      19             :  */
      20             : 
      21             : #include <string.h>
      22             : 
      23             : #include "config.h"
      24             : 
      25             : #include "libavutil/intmath.h"
      26             : #include "libavutil/intreadwrite.h"
      27             : #include "libavutil/mem.h"
      28             : 
      29             : #include "bytestream.h"
      30             : #include "hevc.h"
      31             : #include "h264.h"
      32             : #include "h2645_parse.h"
      33             : 
      34      181369 : int ff_h2645_extract_rbsp(const uint8_t *src, int length,
      35             :                           H2645RBSP *rbsp, H2645NAL *nal, int small_padding)
      36             : {
      37             :     int i, si, di;
      38             :     uint8_t *dst;
      39             : 
      40      181369 :     nal->skipped_bytes = 0;
      41             : #define STARTCODE_TEST                                                  \
      42             :         if (i + 2 < length && src[i + 1] == 0 && src[i + 2] <= 3) {     \
      43             :             if (src[i + 2] != 3 && src[i + 2] != 0) {                   \
      44             :                 /* startcode, so we must be past the end */             \
      45             :                 length = i;                                             \
      46             :             }                                                           \
      47             :             break;                                                      \
      48             :         }
      49             : #if HAVE_FAST_UNALIGNED
      50             : #define FIND_FIRST_ZERO                                                 \
      51             :         if (i > 0 && !src[i])                                           \
      52             :             i--;                                                        \
      53             :         while (src[i])                                                  \
      54             :             i++
      55             : #if HAVE_FAST_64BIT
      56    45011131 :     for (i = 0; i + 1 < length; i += 9) {
      57   134799423 :         if (!((~AV_RN64(src + i) &
      58    89866282 :                (AV_RN64(src + i) - 0x0100010001000101ULL)) &
      59             :               0x8000800080008080ULL))
      60    43649781 :             continue;
      61     1283360 :         FIND_FIRST_ZERO;
      62     1283360 :         STARTCODE_TEST;
      63     1179981 :         i -= 7;
      64             :     }
      65             : #else
      66             :     for (i = 0; i + 1 < length; i += 5) {
      67             :         if (!((~AV_RN32(src + i) &
      68             :                (AV_RN32(src + i) - 0x01000101U)) &
      69             :               0x80008080U))
      70             :             continue;
      71             :         FIND_FIRST_ZERO;
      72             :         STARTCODE_TEST;
      73             :         i -= 3;
      74             :     }
      75             : #endif /* HAVE_FAST_64BIT */
      76             : #else
      77             :     for (i = 0; i + 1 < length; i += 2) {
      78             :         if (src[i])
      79             :             continue;
      80             :         if (i > 0 && src[i - 1] == 0)
      81             :             i--;
      82             :         STARTCODE_TEST;
      83             :     }
      84             : #endif /* HAVE_FAST_UNALIGNED */
      85             : 
      86      181369 :     if (i >= length - 1 && small_padding) { // no escaped 0
      87      109686 :         nal->data     =
      88      109686 :         nal->raw_data = src;
      89      109686 :         nal->size     =
      90      109686 :         nal->raw_size = length;
      91      109686 :         return length;
      92       71683 :     } else if (i > length)
      93       20523 :         i = length;
      94             : 
      95       71683 :     nal->rbsp_buffer = &rbsp->rbsp_buffer[rbsp->rbsp_buffer_size];
      96       71683 :     dst = nal->rbsp_buffer;
      97             : 
      98       71683 :     memcpy(dst, src, i);
      99       71683 :     si = di = i;
     100     9057722 :     while (si + 2 < length) {
     101             :         // remove escapes (very rare 1:2^22)
     102     8957016 :         if (src[si + 2] > 3) {
     103     8629659 :             dst[di++] = src[si++];
     104     8629659 :             dst[di++] = src[si++];
     105      327357 :         } else if (src[si] == 0 && src[si + 1] == 0 && src[si + 2] != 0) {
     106       58335 :             if (src[si + 2] == 3) { // escape
     107       15675 :                 dst[di++] = 0;
     108       15675 :                 dst[di++] = 0;
     109       15675 :                 si       += 3;
     110             : 
     111       15675 :                 if (nal->skipped_bytes_pos) {
     112       14750 :                     nal->skipped_bytes++;
     113       14750 :                     if (nal->skipped_bytes_pos_size < nal->skipped_bytes) {
     114           0 :                         nal->skipped_bytes_pos_size *= 2;
     115           0 :                         av_assert0(nal->skipped_bytes_pos_size >= nal->skipped_bytes);
     116           0 :                         av_reallocp_array(&nal->skipped_bytes_pos,
     117           0 :                                 nal->skipped_bytes_pos_size,
     118             :                                 sizeof(*nal->skipped_bytes_pos));
     119           0 :                         if (!nal->skipped_bytes_pos) {
     120           0 :                             nal->skipped_bytes_pos_size = 0;
     121           0 :                             return AVERROR(ENOMEM);
     122             :                         }
     123             :                     }
     124       14750 :                     if (nal->skipped_bytes_pos)
     125       14750 :                         nal->skipped_bytes_pos[nal->skipped_bytes-1] = di - 1;
     126             :                 }
     127       15675 :                 continue;
     128             :             } else // next start code
     129       42660 :                 goto nsc;
     130             :         }
     131             : 
     132     8898681 :         dst[di++] = src[si++];
     133             :     }
     134       62245 :     while (si < length)
     135        4199 :         dst[di++] = src[si++];
     136             : 
     137       29023 : nsc:
     138       71683 :     memset(dst + di, 0, AV_INPUT_BUFFER_PADDING_SIZE);
     139             : 
     140       71683 :     nal->data = dst;
     141       71683 :     nal->size = di;
     142       71683 :     nal->raw_data = src;
     143       71683 :     nal->raw_size = si;
     144       71683 :     rbsp->rbsp_buffer_size += si;
     145             : 
     146       71683 :     return si;
     147             : }
     148             : 
     149             : static const char *hevc_nal_type_name[64] = {
     150             :     "TRAIL_N", // HEVC_NAL_TRAIL_N
     151             :     "TRAIL_R", // HEVC_NAL_TRAIL_R
     152             :     "TSA_N", // HEVC_NAL_TSA_N
     153             :     "TSA_R", // HEVC_NAL_TSA_R
     154             :     "STSA_N", // HEVC_NAL_STSA_N
     155             :     "STSA_R", // HEVC_NAL_STSA_R
     156             :     "RADL_N", // HEVC_NAL_RADL_N
     157             :     "RADL_R", // HEVC_NAL_RADL_R
     158             :     "RASL_N", // HEVC_NAL_RASL_N
     159             :     "RASL_R", // HEVC_NAL_RASL_R
     160             :     "RSV_VCL_N10", // HEVC_NAL_VCL_N10
     161             :     "RSV_VCL_R11", // HEVC_NAL_VCL_R11
     162             :     "RSV_VCL_N12", // HEVC_NAL_VCL_N12
     163             :     "RSV_VLC_R13", // HEVC_NAL_VCL_R13
     164             :     "RSV_VCL_N14", // HEVC_NAL_VCL_N14
     165             :     "RSV_VCL_R15", // HEVC_NAL_VCL_R15
     166             :     "BLA_W_LP", // HEVC_NAL_BLA_W_LP
     167             :     "BLA_W_RADL", // HEVC_NAL_BLA_W_RADL
     168             :     "BLA_N_LP", // HEVC_NAL_BLA_N_LP
     169             :     "IDR_W_RADL", // HEVC_NAL_IDR_W_RADL
     170             :     "IDR_N_LP", // HEVC_NAL_IDR_N_LP
     171             :     "CRA_NUT", // HEVC_NAL_CRA_NUT
     172             :     "IRAP_IRAP_VCL22", // HEVC_NAL_IRAP_VCL22
     173             :     "IRAP_IRAP_VCL23", // HEVC_NAL_IRAP_VCL23
     174             :     "RSV_VCL24", // HEVC_NAL_RSV_VCL24
     175             :     "RSV_VCL25", // HEVC_NAL_RSV_VCL25
     176             :     "RSV_VCL26", // HEVC_NAL_RSV_VCL26
     177             :     "RSV_VCL27", // HEVC_NAL_RSV_VCL27
     178             :     "RSV_VCL28", // HEVC_NAL_RSV_VCL28
     179             :     "RSV_VCL29", // HEVC_NAL_RSV_VCL29
     180             :     "RSV_VCL30", // HEVC_NAL_RSV_VCL30
     181             :     "RSV_VCL31", // HEVC_NAL_RSV_VCL31
     182             :     "VPS", // HEVC_NAL_VPS
     183             :     "SPS", // HEVC_NAL_SPS
     184             :     "PPS", // HEVC_NAL_PPS
     185             :     "AUD", // HEVC_NAL_AUD
     186             :     "EOS_NUT", // HEVC_NAL_EOS_NUT
     187             :     "EOB_NUT", // HEVC_NAL_EOB_NUT
     188             :     "FD_NUT", // HEVC_NAL_FD_NUT
     189             :     "SEI_PREFIX", // HEVC_NAL_SEI_PREFIX
     190             :     "SEI_SUFFIX", // HEVC_NAL_SEI_SUFFIX
     191             :     "RSV_NVCL41", // HEVC_NAL_RSV_NVCL41
     192             :     "RSV_NVCL42", // HEVC_NAL_RSV_NVCL42
     193             :     "RSV_NVCL43", // HEVC_NAL_RSV_NVCL43
     194             :     "RSV_NVCL44", // HEVC_NAL_RSV_NVCL44
     195             :     "RSV_NVCL45", // HEVC_NAL_RSV_NVCL45
     196             :     "RSV_NVCL46", // HEVC_NAL_RSV_NVCL46
     197             :     "RSV_NVCL47", // HEVC_NAL_RSV_NVCL47
     198             :     "UNSPEC48", // HEVC_NAL_UNSPEC48
     199             :     "UNSPEC49", // HEVC_NAL_UNSPEC49
     200             :     "UNSPEC50", // HEVC_NAL_UNSPEC50
     201             :     "UNSPEC51", // HEVC_NAL_UNSPEC51
     202             :     "UNSPEC52", // HEVC_NAL_UNSPEC52
     203             :     "UNSPEC53", // HEVC_NAL_UNSPEC53
     204             :     "UNSPEC54", // HEVC_NAL_UNSPEC54
     205             :     "UNSPEC55", // HEVC_NAL_UNSPEC55
     206             :     "UNSPEC56", // HEVC_NAL_UNSPEC56
     207             :     "UNSPEC57", // HEVC_NAL_UNSPEC57
     208             :     "UNSPEC58", // HEVC_NAL_UNSPEC58
     209             :     "UNSPEC59", // HEVC_NAL_UNSPEC59
     210             :     "UNSPEC60", // HEVC_NAL_UNSPEC60
     211             :     "UNSPEC61", // HEVC_NAL_UNSPEC61
     212             :     "UNSPEC62", // HEVC_NAL_UNSPEC62
     213             :     "UNSPEC63", // HEVC_NAL_UNSPEC63
     214             : };
     215             : 
     216       92580 : static const char *hevc_nal_unit_name(int nal_type)
     217             : {
     218       92580 :     av_assert0(nal_type >= 0 && nal_type < 64);
     219       92580 :     return hevc_nal_type_name[nal_type];
     220             : }
     221             : 
     222             : static const char *h264_nal_type_name[32] = {
     223             :     "Unspecified 0", //H264_NAL_UNSPECIFIED
     224             :     "Coded slice of a non-IDR picture", // H264_NAL_SLICE
     225             :     "Coded slice data partition A", // H264_NAL_DPA
     226             :     "Coded slice data partition B", // H264_NAL_DPB
     227             :     "Coded slice data partition C", // H264_NAL_DPC
     228             :     "IDR", // H264_NAL_IDR_SLICE
     229             :     "SEI", // H264_NAL_SEI
     230             :     "SPS", // H264_NAL_SPS
     231             :     "PPS", // H264_NAL_PPS
     232             :     "AUD", // H264_NAL_AUD
     233             :     "End of sequence", // H264_NAL_END_SEQUENCE
     234             :     "End of stream", // H264_NAL_END_STREAM
     235             :     "Filler data", // H264_NAL_FILLER_DATA
     236             :     "SPS extension", // H264_NAL_SPS_EXT
     237             :     "Prefix", // H264_NAL_PREFIX
     238             :     "Subset SPS", // H264_NAL_SUB_SPS
     239             :     "Depth parameter set", // H264_NAL_DPS
     240             :     "Reserved 17", // H264_NAL_RESERVED17
     241             :     "Reserved 18", // H264_NAL_RESERVED18
     242             :     "Auxiliary coded picture without partitioning", // H264_NAL_AUXILIARY_SLICE
     243             :     "Slice extension", // H264_NAL_EXTEN_SLICE
     244             :     "Slice extension for a depth view or a 3D-AVC texture view", // H264_NAL_DEPTH_EXTEN_SLICE
     245             :     "Reserved 22", // H264_NAL_RESERVED22
     246             :     "Reserved 23", // H264_NAL_RESERVED23
     247             :     "Unspecified 24", // H264_NAL_UNSPECIFIED24
     248             :     "Unspecified 25", // H264_NAL_UNSPECIFIED25
     249             :     "Unspecified 26", // H264_NAL_UNSPECIFIED26
     250             :     "Unspecified 27", // H264_NAL_UNSPECIFIED27
     251             :     "Unspecified 28", // H264_NAL_UNSPECIFIED28
     252             :     "Unspecified 29", // H264_NAL_UNSPECIFIED29
     253             :     "Unspecified 30", // H264_NAL_UNSPECIFIED30
     254             :     "Unspecified 31", // H264_NAL_UNSPECIFIED31
     255             : };
     256             : 
     257       51882 : static const char *h264_nal_unit_name(int nal_type)
     258             : {
     259       51882 :     av_assert0(nal_type >= 0 && nal_type < 32);
     260       51882 :     return h264_nal_type_name[nal_type];
     261             : }
     262             : 
     263      144462 : static int get_bit_length(H2645NAL *nal, int skip_trailing_zeros)
     264             : {
     265      144462 :     int size = nal->size;
     266             :     int v;
     267             : 
     268      349800 :     while (skip_trailing_zeros && size > 0 && nal->data[size - 1] == 0)
     269       60876 :         size--;
     270             : 
     271      144462 :     if (!size)
     272           0 :         return 0;
     273             : 
     274      144462 :     v = nal->data[size - 1];
     275             : 
     276      144462 :     if (size > INT_MAX / 8)
     277           0 :         return AVERROR(ERANGE);
     278      144462 :     size *= 8;
     279             : 
     280             :     /* remove the stop bit and following trailing zeros,
     281             :      * or nothing for damaged bitstreams */
     282      144462 :     if (v)
     283      144462 :         size -= ff_ctz(v) + 1;
     284             : 
     285      144462 :     return size;
     286             : }
     287             : 
     288             : /**
     289             :  * @return AVERROR_INVALIDDATA if the packet is not a valid NAL unit,
     290             :  * 0 if the unit should be skipped, 1 otherwise
     291             :  */
     292       92580 : static int hevc_parse_nal_header(H2645NAL *nal, void *logctx)
     293             : {
     294       92580 :     GetBitContext *gb = &nal->gb;
     295             :     int nuh_layer_id;
     296             : 
     297       92580 :     if (get_bits1(gb) != 0)
     298           0 :         return AVERROR_INVALIDDATA;
     299             : 
     300       92580 :     nal->type = get_bits(gb, 6);
     301             : 
     302       92580 :     nuh_layer_id   = get_bits(gb, 6);
     303       92580 :     nal->temporal_id = get_bits(gb, 3) - 1;
     304       92580 :     if (nal->temporal_id < 0)
     305           0 :         return AVERROR_INVALIDDATA;
     306             : 
     307       92580 :     av_log(logctx, AV_LOG_DEBUG,
     308             :            "nal_unit_type: %d(%s), nuh_layer_id: %d, temporal_id: %d\n",
     309             :            nal->type, hevc_nal_unit_name(nal->type), nuh_layer_id, nal->temporal_id);
     310             : 
     311       92580 :     return nuh_layer_id == 0;
     312             : }
     313             : 
     314       51882 : static int h264_parse_nal_header(H2645NAL *nal, void *logctx)
     315             : {
     316       51882 :     GetBitContext *gb = &nal->gb;
     317             : 
     318       51882 :     if (get_bits1(gb) != 0)
     319           0 :         return AVERROR_INVALIDDATA;
     320             : 
     321       51882 :     nal->ref_idc = get_bits(gb, 2);
     322       51882 :     nal->type    = get_bits(gb, 5);
     323             : 
     324       51882 :     av_log(logctx, AV_LOG_DEBUG,
     325             :            "nal_unit_type: %d(%s), nal_ref_idc: %d\n",
     326             :            nal->type, h264_nal_unit_name(nal->type), nal->ref_idc);
     327             : 
     328       51882 :     return 1;
     329             : }
     330             : 
     331      139648 : static int find_next_start_code(const uint8_t *buf, const uint8_t *next_avc)
     332             : {
     333      139648 :     int i = 0;
     334             : 
     335      139648 :     if (buf + 3 >= next_avc)
     336           0 :         return next_avc - buf;
     337             : 
     338      304845 :     while (buf + i + 3 < next_avc) {
     339      165197 :         if (buf[i] == 0 && buf[i + 1] == 0 && buf[i + 2] == 1)
     340      139648 :             break;
     341       25549 :         i++;
     342             :     }
     343      139648 :     return i + 3;
     344             : }
     345             : 
     346       52419 : int ff_h2645_packet_split(H2645Packet *pkt, const uint8_t *buf, int length,
     347             :                           void *logctx, int is_nalff, int nal_length_size,
     348             :                           enum AVCodecID codec_id, int small_padding)
     349             : {
     350             :     GetByteContext bc;
     351       52419 :     int consumed, ret = 0;
     352       52419 :     int next_avc = is_nalff ? 0 : length;
     353       52419 :     int64_t padding = small_padding ? 0 : MAX_MBPAIR_SIZE;
     354             : 
     355       52419 :     bytestream2_init(&bc, buf, length);
     356       52419 :     av_fast_padded_malloc(&pkt->rbsp.rbsp_buffer, &pkt->rbsp.rbsp_buffer_alloc_size, length + padding);
     357       52419 :     if (!pkt->rbsp.rbsp_buffer)
     358           0 :         return AVERROR(ENOMEM);
     359             : 
     360       52419 :     pkt->rbsp.rbsp_buffer_size = 0;
     361       52419 :     pkt->nb_nals = 0;
     362      249300 :     while (bytestream2_get_bytes_left(&bc) >= 4) {
     363             :         H2645NAL *nal;
     364      144463 :         int extract_length = 0;
     365      144463 :         int skip_trailing_zeros = 1;
     366             : 
     367      144463 :         if (bytestream2_tell(&bc) == next_avc) {
     368        4815 :             int i = 0;
     369        4815 :             extract_length = get_nalsize(nal_length_size,
     370        4815 :                                          bc.buffer, bytestream2_get_bytes_left(&bc), &i, logctx);
     371        4815 :             if (extract_length < 0)
     372           1 :                 return extract_length;
     373             : 
     374        4814 :             bytestream2_skip(&bc, nal_length_size);
     375             : 
     376        4814 :             next_avc = bytestream2_tell(&bc) + extract_length;
     377             :         } else {
     378             :             int buf_index;
     379             : 
     380      139648 :             if (bytestream2_tell(&bc) > next_avc)
     381           0 :                 av_log(logctx, AV_LOG_WARNING, "Exceeded next NALFF position, re-syncing.\n");
     382             : 
     383             :             /* search start code */
     384      139648 :             buf_index = find_next_start_code(bc.buffer, buf + next_avc);
     385             : 
     386      139648 :             bytestream2_skip(&bc, buf_index);
     387             : 
     388      139648 :             if (!bytestream2_get_bytes_left(&bc)) {
     389           0 :                 if (pkt->nb_nals > 0) {
     390             :                     // No more start codes: we discarded some irrelevant
     391             :                     // bytes at the end of the packet.
     392           0 :                     return 0;
     393             :                 } else {
     394           0 :                     av_log(logctx, AV_LOG_ERROR, "No start code is found.\n");
     395           0 :                     return AVERROR_INVALIDDATA;
     396             :                 }
     397             :             }
     398             : 
     399      139648 :             extract_length = FFMIN(bytestream2_get_bytes_left(&bc), next_avc - bytestream2_tell(&bc));
     400             : 
     401      139648 :             if (bytestream2_tell(&bc) >= next_avc) {
     402             :                 /* skip to the start of the next NAL */
     403           0 :                 bytestream2_skip(&bc, next_avc - bytestream2_tell(&bc));
     404           0 :                 continue;
     405             :             }
     406             :         }
     407             : 
     408      144462 :         if (pkt->nals_allocated < pkt->nb_nals + 1) {
     409       10335 :             int new_size = pkt->nals_allocated + 1;
     410       10335 :             void *tmp = av_realloc_array(pkt->nals, new_size, sizeof(*pkt->nals));
     411             : 
     412       10335 :             if (!tmp)
     413           0 :                 return AVERROR(ENOMEM);
     414             : 
     415       10335 :             pkt->nals = tmp;
     416       10335 :             memset(pkt->nals + pkt->nals_allocated, 0,
     417       10335 :                    (new_size - pkt->nals_allocated) * sizeof(*pkt->nals));
     418             : 
     419       10335 :             nal = &pkt->nals[pkt->nb_nals];
     420       10335 :             nal->skipped_bytes_pos_size = 1024; // initial buffer size
     421       10335 :             nal->skipped_bytes_pos = av_malloc_array(nal->skipped_bytes_pos_size, sizeof(*nal->skipped_bytes_pos));
     422       10335 :             if (!nal->skipped_bytes_pos)
     423           0 :                 return AVERROR(ENOMEM);
     424             : 
     425       10335 :             pkt->nals_allocated = new_size;
     426             :         }
     427      144462 :         nal = &pkt->nals[pkt->nb_nals];
     428             : 
     429      144462 :         consumed = ff_h2645_extract_rbsp(bc.buffer, extract_length, &pkt->rbsp, nal, small_padding);
     430      144462 :         if (consumed < 0)
     431           0 :             return consumed;
     432             : 
     433      144462 :         if (is_nalff && (extract_length != consumed) && extract_length)
     434          12 :             av_log(logctx, AV_LOG_DEBUG,
     435             :                    "NALFF: Consumed only %d bytes instead of %d\n",
     436             :                    consumed, extract_length);
     437             : 
     438      144462 :         pkt->nb_nals++;
     439             : 
     440      144462 :         bytestream2_skip(&bc, consumed);
     441             : 
     442             :         /* see commit 3566042a0 */
     443      236692 :         if (bytestream2_get_bytes_left(&bc) >= 4 &&
     444       92230 :             bytestream2_peek_be32(&bc) == 0x000001E0)
     445           2 :             skip_trailing_zeros = 0;
     446             : 
     447      144462 :         nal->size_bits = get_bit_length(nal, skip_trailing_zeros);
     448             : 
     449      144462 :         ret = init_get_bits(&nal->gb, nal->data, nal->size_bits);
     450      144462 :         if (ret < 0)
     451           0 :             return ret;
     452             : 
     453      144462 :         if (codec_id == AV_CODEC_ID_HEVC)
     454       92580 :             ret = hevc_parse_nal_header(nal, logctx);
     455             :         else
     456       51882 :             ret = h264_parse_nal_header(nal, logctx);
     457      144462 :         if (ret <= 0 || nal->size <= 0 || nal->size_bits <= 0) {
     458           0 :             if (ret < 0) {
     459           0 :                 av_log(logctx, AV_LOG_ERROR, "Invalid NAL unit %d, skipping.\n",
     460             :                        nal->type);
     461             :             }
     462           0 :             pkt->nb_nals--;
     463             :         }
     464             :     }
     465             : 
     466       52418 :     return 0;
     467             : }
     468             : 
     469        2559 : void ff_h2645_packet_uninit(H2645Packet *pkt)
     470             : {
     471             :     int i;
     472       12894 :     for (i = 0; i < pkt->nals_allocated; i++) {
     473       10335 :         av_freep(&pkt->nals[i].skipped_bytes_pos);
     474             :     }
     475        2559 :     av_freep(&pkt->nals);
     476        2559 :     pkt->nals_allocated = 0;
     477        2559 :     av_freep(&pkt->rbsp.rbsp_buffer);
     478        2559 :     pkt->rbsp.rbsp_buffer_alloc_size = pkt->rbsp.rbsp_buffer_size = 0;
     479        2559 : }

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