LCOV - code coverage report
Current view: top level - libavcodec - remove_extradata_bsf.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 27 29 93.1 %
Date: 2018-05-20 11:54:08 Functions: 3 3 100.0 %

          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 "libavutil/log.h"
      22             : #include "libavutil/opt.h"
      23             : 
      24             : #include "avcodec.h"
      25             : #include "bsf.h"
      26             : 
      27             : enum RemoveFreq {
      28             :     REMOVE_FREQ_KEYFRAME,
      29             :     REMOVE_FREQ_ALL,
      30             :     REMOVE_FREQ_NONKEYFRAME,
      31             : };
      32             : 
      33             : typedef struct RemoveExtradataContext {
      34             :     const AVClass *class;
      35             :     int freq;
      36             : 
      37             :     AVCodecParserContext *parser;
      38             :     AVCodecContext *avctx;
      39             : } RemoveExtradataContext;
      40             : 
      41         153 : static int remove_extradata(AVBSFContext *ctx, AVPacket *pkt)
      42             : {
      43         153 :     RemoveExtradataContext *s = ctx->priv_data;
      44             : 
      45             :     int ret;
      46             : 
      47         153 :     ret = ff_bsf_get_packet_ref(ctx, pkt);
      48         153 :     if (ret < 0)
      49          78 :         return ret;
      50             : 
      51          75 :     if (s->parser && s->parser->parser->split) {
      52         125 :         if (s->freq == REMOVE_FREQ_ALL ||
      53         103 :             (s->freq == REMOVE_FREQ_NONKEYFRAME && !(pkt->flags & AV_PKT_FLAG_KEY)) ||
      54          53 :             (s->freq == REMOVE_FREQ_KEYFRAME && pkt->flags & AV_PKT_FLAG_KEY)) {
      55          50 :             int i = s->parser->parser->split(s->avctx, pkt->data, pkt->size);
      56          50 :             pkt->data += i;
      57          50 :             pkt->size -= i;
      58             :         }
      59             :     }
      60             : 
      61          75 :     return 0;
      62             : }
      63             : 
      64           3 : static int remove_extradata_init(AVBSFContext *ctx)
      65             : {
      66           3 :     RemoveExtradataContext *s = ctx->priv_data;
      67             :     int ret;
      68             : 
      69           3 :     s->parser = av_parser_init(ctx->par_in->codec_id);
      70             : 
      71           3 :     if (s->parser) {
      72           3 :         s->avctx = avcodec_alloc_context3(NULL);
      73           3 :         if (!s->avctx)
      74           0 :             return AVERROR(ENOMEM);
      75             : 
      76           3 :         ret = avcodec_parameters_to_context(s->avctx, ctx->par_in);
      77           3 :         if (ret < 0)
      78           0 :             return ret;
      79             :     }
      80             : 
      81           3 :     return 0;
      82             : }
      83             : 
      84           3 : static void remove_extradata_close(AVBSFContext *ctx)
      85             : {
      86           3 :     RemoveExtradataContext *s = ctx->priv_data;
      87             : 
      88           3 :     avcodec_free_context(&s->avctx);
      89           3 :     av_parser_close(s->parser);
      90           3 : }
      91             : 
      92             : #define OFFSET(x) offsetof(RemoveExtradataContext, x)
      93             : #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_BSF_PARAM)
      94             : static const AVOption options[] = {
      95             :     { "freq", NULL, OFFSET(freq), AV_OPT_TYPE_INT, { .i64 = REMOVE_FREQ_KEYFRAME }, REMOVE_FREQ_KEYFRAME, REMOVE_FREQ_NONKEYFRAME, FLAGS, "freq" },
      96             :         { "k",        NULL, 0, AV_OPT_TYPE_CONST, { .i64 = REMOVE_FREQ_NONKEYFRAME }, .flags = FLAGS, .unit = "freq" },
      97             :         { "keyframe", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = REMOVE_FREQ_KEYFRAME }, .flags = FLAGS, .unit = "freq" },
      98             :         { "e",        NULL, 0, AV_OPT_TYPE_CONST, { .i64 = REMOVE_FREQ_ALL      }, .flags = FLAGS, .unit = "freq" },
      99             :         { "all",      NULL, 0, AV_OPT_TYPE_CONST, { .i64 = REMOVE_FREQ_ALL      }, .flags = FLAGS, .unit = "freq" },
     100             :     { NULL },
     101             : };
     102             : 
     103             : static const AVClass remove_extradata_class = {
     104             :     .class_name = "remove_extradata",
     105             :     .item_name  = av_default_item_name,
     106             :     .option     = options,
     107             :     .version    = LIBAVUTIL_VERSION_INT,
     108             : };
     109             : 
     110             : const AVBitStreamFilter ff_remove_extradata_bsf = {
     111             :     .name           = "remove_extra",
     112             :     .priv_data_size = sizeof(RemoveExtradataContext),
     113             :     .priv_class     = &remove_extradata_class,
     114             :     .init           = remove_extradata_init,
     115             :     .close          = remove_extradata_close,
     116             :     .filter         = remove_extradata,
     117             : };

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