GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/bitstream_filter.c Lines: 0 90 0.0 %
Date: 2019-11-20 04:07:19 Branches: 0 50 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 "libavutil/internal.h"
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#include "libavutil/mem.h"
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#include "libavutil/opt.h"
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#if FF_API_OLD_BSF
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FF_DISABLE_DEPRECATION_WARNINGS
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const AVBitStreamFilter *av_bitstream_filter_next(const AVBitStreamFilter *f)
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{
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    const AVBitStreamFilter *filter = NULL;
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    void *opaque = NULL;
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    while (filter != f)
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        filter = av_bsf_iterate(&opaque);
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    return av_bsf_iterate(&opaque);
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}
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void av_register_bitstream_filter(AVBitStreamFilter *bsf)
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{
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}
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typedef struct BSFCompatContext {
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    AVBSFContext *ctx;
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    int extradata_updated;
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} BSFCompatContext;
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AVBitStreamFilterContext *av_bitstream_filter_init(const char *name)
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{
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    AVBitStreamFilterContext *ctx = NULL;
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    BSFCompatContext         *priv = NULL;
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    const AVBitStreamFilter *bsf;
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    bsf = av_bsf_get_by_name(name);
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    if (!bsf)
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        return NULL;
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    ctx = av_mallocz(sizeof(*ctx));
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    if (!ctx)
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        return NULL;
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    priv = av_mallocz(sizeof(*priv));
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    if (!priv)
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        goto fail;
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    ctx->filter    = bsf;
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    ctx->priv_data = priv;
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    return ctx;
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fail:
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    if (priv)
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        av_bsf_free(&priv->ctx);
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    av_freep(&priv);
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    av_freep(&ctx);
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    return NULL;
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}
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void av_bitstream_filter_close(AVBitStreamFilterContext *bsfc)
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{
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    BSFCompatContext *priv;
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    if (!bsfc)
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        return;
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    priv = bsfc->priv_data;
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    av_bsf_free(&priv->ctx);
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    av_freep(&bsfc->priv_data);
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    av_free(bsfc);
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}
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int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc,
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                               AVCodecContext *avctx, const char *args,
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                               uint8_t **poutbuf, int *poutbuf_size,
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                               const uint8_t *buf, int buf_size, int keyframe)
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{
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    BSFCompatContext *priv = bsfc->priv_data;
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    AVPacket pkt = { 0 };
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    int ret;
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    if (!priv->ctx) {
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        ret = av_bsf_alloc(bsfc->filter, &priv->ctx);
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        if (ret < 0)
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            return ret;
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        ret = avcodec_parameters_from_context(priv->ctx->par_in, avctx);
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        if (ret < 0)
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            return ret;
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        priv->ctx->time_base_in = avctx->time_base;
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        if (bsfc->args && bsfc->filter->priv_class) {
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            const AVOption *opt = av_opt_next(priv->ctx->priv_data, NULL);
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            const char * shorthand[2] = {NULL};
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            if (opt)
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                shorthand[0] = opt->name;
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            ret = av_opt_set_from_string(priv->ctx->priv_data, bsfc->args, shorthand, "=", ":");
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            if (ret < 0)
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                return ret;
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        }
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        ret = av_bsf_init(priv->ctx);
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        if (ret < 0)
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            return ret;
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    }
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    pkt.data = (uint8_t *)buf;
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    pkt.size = buf_size;
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    ret = av_bsf_send_packet(priv->ctx, &pkt);
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    if (ret < 0)
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        return ret;
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    *poutbuf      = NULL;
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    *poutbuf_size = 0;
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    ret = av_bsf_receive_packet(priv->ctx, &pkt);
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    if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
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        return 0;
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    else if (ret < 0)
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        return ret;
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    *poutbuf = av_malloc(pkt.size + AV_INPUT_BUFFER_PADDING_SIZE);
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    if (!*poutbuf) {
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        av_packet_unref(&pkt);
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        return AVERROR(ENOMEM);
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    }
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    *poutbuf_size = pkt.size;
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    memcpy(*poutbuf, pkt.data, pkt.size);
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    av_packet_unref(&pkt);
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    /* drain all the remaining packets we cannot return */
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    while (ret >= 0) {
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        ret = av_bsf_receive_packet(priv->ctx, &pkt);
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        av_packet_unref(&pkt);
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    }
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    if (!priv->extradata_updated) {
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        /* update extradata in avctx from the output codec parameters */
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        if (priv->ctx->par_out->extradata_size && (!args || !strstr(args, "private_spspps_buf"))) {
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            av_freep(&avctx->extradata);
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            avctx->extradata_size = 0;
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            avctx->extradata = av_mallocz(priv->ctx->par_out->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
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            if (!avctx->extradata)
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                return AVERROR(ENOMEM);
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            memcpy(avctx->extradata, priv->ctx->par_out->extradata, priv->ctx->par_out->extradata_size);
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            avctx->extradata_size = priv->ctx->par_out->extradata_size;
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        }
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        priv->extradata_updated = 1;
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    }
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    return 1;
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}
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FF_ENABLE_DEPRECATION_WARNINGS
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#endif