GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/remove_extradata_bsf.c Lines: 27 29 93.1 %
Date: 2020-08-14 10:39:37 Branches: 17 22 77.3 %

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 "libavutil/log.h"
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#include "libavutil/opt.h"
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#include "avcodec.h"
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#include "bsf.h"
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#include "bsf_internal.h"
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enum RemoveFreq {
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    REMOVE_FREQ_KEYFRAME,
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    REMOVE_FREQ_ALL,
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    REMOVE_FREQ_NONKEYFRAME,
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};
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typedef struct RemoveExtradataContext {
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    const AVClass *class;
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    int freq;
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    AVCodecParserContext *parser;
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    AVCodecContext *avctx;
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} RemoveExtradataContext;
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static int remove_extradata(AVBSFContext *ctx, AVPacket *pkt)
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{
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    RemoveExtradataContext *s = ctx->priv_data;
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    int ret;
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    ret = ff_bsf_get_packet_ref(ctx, pkt);
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    if (ret < 0)
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        return ret;
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    if (s->parser && s->parser->parser->split) {
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        if (s->freq == REMOVE_FREQ_ALL ||
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            (s->freq == REMOVE_FREQ_NONKEYFRAME && !(pkt->flags & AV_PKT_FLAG_KEY)) ||
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            (s->freq == REMOVE_FREQ_KEYFRAME && pkt->flags & AV_PKT_FLAG_KEY)) {
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            int i = s->parser->parser->split(s->avctx, pkt->data, pkt->size);
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            pkt->data += i;
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            pkt->size -= i;
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        }
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    }
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    return 0;
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}
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static int remove_extradata_init(AVBSFContext *ctx)
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{
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    RemoveExtradataContext *s = ctx->priv_data;
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    int ret;
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    s->parser = av_parser_init(ctx->par_in->codec_id);
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    if (s->parser) {
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        s->avctx = avcodec_alloc_context3(NULL);
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        if (!s->avctx)
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            return AVERROR(ENOMEM);
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        ret = avcodec_parameters_to_context(s->avctx, ctx->par_in);
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        if (ret < 0)
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            return ret;
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    }
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    return 0;
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}
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static void remove_extradata_close(AVBSFContext *ctx)
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{
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    RemoveExtradataContext *s = ctx->priv_data;
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    avcodec_free_context(&s->avctx);
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    av_parser_close(s->parser);
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}
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#define OFFSET(x) offsetof(RemoveExtradataContext, 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", NULL, OFFSET(freq), AV_OPT_TYPE_INT, { .i64 = REMOVE_FREQ_KEYFRAME }, REMOVE_FREQ_KEYFRAME, REMOVE_FREQ_NONKEYFRAME, FLAGS, "freq" },
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        { "k",        NULL, 0, AV_OPT_TYPE_CONST, { .i64 = REMOVE_FREQ_NONKEYFRAME }, .flags = FLAGS, .unit = "freq" },
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        { "keyframe", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = REMOVE_FREQ_KEYFRAME }, .flags = FLAGS, .unit = "freq" },
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        { "e",        NULL, 0, AV_OPT_TYPE_CONST, { .i64 = REMOVE_FREQ_ALL      }, .flags = FLAGS, .unit = "freq" },
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        { "all",      NULL, 0, AV_OPT_TYPE_CONST, { .i64 = REMOVE_FREQ_ALL      }, .flags = FLAGS, .unit = "freq" },
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    { NULL },
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};
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static const AVClass remove_extradata_class = {
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    .class_name = "remove_extradata",
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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_remove_extradata_bsf = {
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    .name           = "remove_extra",
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    .priv_data_size = sizeof(RemoveExtradataContext),
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    .priv_class     = &remove_extradata_class,
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    .init           = remove_extradata_init,
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    .close          = remove_extradata_close,
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    .filter         = remove_extradata,
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};