GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/dump_extradata_bsf.c Lines: 0 28 0.0 %
Date: 2019-11-18 18:00:01 Branches: 0 20 0.0 %

Line Branch Exec Source
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/*
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 * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#include <string.h>
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#include "avcodec.h"
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#include "bsf.h"
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#include "libavutil/log.h"
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#include "libavutil/mem.h"
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#include "libavutil/opt.h"
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enum DumpFreq {
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    DUMP_FREQ_KEYFRAME,
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    DUMP_FREQ_ALL,
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};
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typedef struct DumpExtradataContext {
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    const AVClass *class;
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    AVPacket pkt;
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    int freq;
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} DumpExtradataContext;
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static int dump_extradata(AVBSFContext *ctx, AVPacket *out)
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{
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    DumpExtradataContext *s = ctx->priv_data;
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    AVPacket *in = &s->pkt;
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    int ret = 0;
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    ret = ff_bsf_get_packet_ref(ctx, in);
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    if (ret < 0)
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        return ret;
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    if (ctx->par_in->extradata &&
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        (s->freq == DUMP_FREQ_ALL ||
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         (s->freq == DUMP_FREQ_KEYFRAME && in->flags & AV_PKT_FLAG_KEY)) &&
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         in->size >= ctx->par_in->extradata_size &&
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         memcmp(in->data, ctx->par_in->extradata, ctx->par_in->extradata_size)) {
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        if (in->size >= INT_MAX - ctx->par_in->extradata_size) {
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            ret = AVERROR(ERANGE);
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            goto fail;
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        }
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        ret = av_new_packet(out, in->size + ctx->par_in->extradata_size);
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        if (ret < 0)
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            goto fail;
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        ret = av_packet_copy_props(out, in);
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        if (ret < 0) {
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            av_packet_unref(out);
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            goto fail;
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        }
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        memcpy(out->data, ctx->par_in->extradata, ctx->par_in->extradata_size);
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        memcpy(out->data + ctx->par_in->extradata_size, in->data, in->size);
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    } else {
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        av_packet_move_ref(out, in);
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    }
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fail:
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    av_packet_unref(in);
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    return ret;
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}
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#define OFFSET(x) offsetof(DumpExtradataContext, x)
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#define FLAGS (AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_BSF_PARAM)
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static const AVOption options[] = {
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    { "freq", "When to dump extradata", OFFSET(freq), AV_OPT_TYPE_INT,
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        { .i64 = DUMP_FREQ_KEYFRAME }, DUMP_FREQ_KEYFRAME, DUMP_FREQ_ALL, FLAGS, "freq" },
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        { "k",        NULL, 0, AV_OPT_TYPE_CONST, { .i64 = DUMP_FREQ_KEYFRAME }, .flags = FLAGS, .unit = "freq" },
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        { "keyframe", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = DUMP_FREQ_KEYFRAME }, .flags = FLAGS, .unit = "freq" },
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        { "e",        NULL, 0, AV_OPT_TYPE_CONST, { .i64 = DUMP_FREQ_ALL      }, .flags = FLAGS, .unit = "freq" },
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        { "all",      NULL, 0, AV_OPT_TYPE_CONST, { .i64 = DUMP_FREQ_ALL      }, .flags = FLAGS, .unit = "freq" },
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    { NULL },
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};
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static const AVClass dump_extradata_class = {
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    .class_name = "dump_extradata bsf",
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    .item_name  = av_default_item_name,
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    .option     = options,
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    .version    = LIBAVUTIL_VERSION_INT,
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};
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const AVBitStreamFilter ff_dump_extradata_bsf = {
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    .name           = "dump_extra",
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    .priv_data_size = sizeof(DumpExtradataContext),
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    .priv_class     = &dump_extradata_class,
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    .filter         = dump_extradata,
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};