LCOV - code coverage report
Current view: top level - libavcodec - dump_extradata_bsf.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 0 25 0.0 %
Date: 2017-12-16 13:57:32 Functions: 0 1 0.0 %

          Line data    Source code
       1             : /*
       2             :  * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
       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 "avcodec.h"
      24             : #include "bsf.h"
      25             : 
      26             : #include "libavutil/log.h"
      27             : #include "libavutil/mem.h"
      28             : #include "libavutil/opt.h"
      29             : 
      30             : enum DumpFreq {
      31             :     DUMP_FREQ_KEYFRAME,
      32             :     DUMP_FREQ_ALL,
      33             : };
      34             : 
      35             : typedef struct DumpExtradataContext {
      36             :     const AVClass *class;
      37             :     int freq;
      38             : } DumpExtradataContext;
      39             : 
      40           0 : static int dump_extradata(AVBSFContext *ctx, AVPacket *out)
      41             : {
      42           0 :     DumpExtradataContext *s = ctx->priv_data;
      43             :     AVPacket *in;
      44           0 :     int ret = 0;
      45             : 
      46           0 :     ret = ff_bsf_get_packet(ctx, &in);
      47           0 :     if (ret < 0)
      48           0 :         return ret;
      49             : 
      50           0 :     if (ctx->par_in->extradata &&
      51           0 :         (s->freq == DUMP_FREQ_ALL ||
      52           0 :          (s->freq == DUMP_FREQ_KEYFRAME && in->flags & AV_PKT_FLAG_KEY))) {
      53           0 :         if (in->size >= INT_MAX - ctx->par_in->extradata_size) {
      54           0 :             ret = AVERROR(ERANGE);
      55           0 :             goto fail;
      56             :         }
      57             : 
      58           0 :         ret = av_new_packet(out, in->size + ctx->par_in->extradata_size);
      59           0 :         if (ret < 0)
      60           0 :             goto fail;
      61             : 
      62           0 :         ret = av_packet_copy_props(out, in);
      63           0 :         if (ret < 0) {
      64           0 :             av_packet_unref(out);
      65           0 :             goto fail;
      66             :         }
      67             : 
      68           0 :         memcpy(out->data, ctx->par_in->extradata, ctx->par_in->extradata_size);
      69           0 :         memcpy(out->data + ctx->par_in->extradata_size, in->data, in->size);
      70             :     } else {
      71           0 :         av_packet_move_ref(out, in);
      72             :     }
      73             : 
      74           0 : fail:
      75           0 :     av_packet_free(&in);
      76             : 
      77           0 :     return ret;
      78             : }
      79             : 
      80             : #define OFFSET(x) offsetof(DumpExtradataContext, x)
      81             : static const AVOption options[] = {
      82             :     { "freq", "When do dump extradata", OFFSET(freq), AV_OPT_TYPE_INT,
      83             :         { .i64 = DUMP_FREQ_KEYFRAME }, DUMP_FREQ_KEYFRAME, DUMP_FREQ_ALL, 0, "freq" },
      84             :         { "k",        NULL, 0, AV_OPT_TYPE_CONST, { .i64 = DUMP_FREQ_KEYFRAME }, .unit = "freq" },
      85             :         { "keyframe", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = DUMP_FREQ_KEYFRAME }, .unit = "freq" },
      86             :         { "e",        NULL, 0, AV_OPT_TYPE_CONST, { .i64 = DUMP_FREQ_ALL      }, .unit = "freq" },
      87             :         { "all",      NULL, 0, AV_OPT_TYPE_CONST, { .i64 = DUMP_FREQ_ALL      }, .unit = "freq" },
      88             :     { NULL },
      89             : };
      90             : 
      91             : static const AVClass dump_extradata_class = {
      92             :     .class_name = "dump_extradata bsf",
      93             :     .item_name  = av_default_item_name,
      94             :     .option     = options,
      95             :     .version    = LIBAVUTIL_VERSION_MAJOR,
      96             : };
      97             : 
      98             : const AVBitStreamFilter ff_dump_extradata_bsf = {
      99             :     .name           = "dump_extra",
     100             :     .priv_data_size = sizeof(DumpExtradataContext),
     101             :     .priv_class     = &dump_extradata_class,
     102             :     .filter         = dump_extradata,
     103             : };

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