/* * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "bsf.h"#include "bsf_internal.h"#include "cbs_bsf.h" static int cbs_bsf_update_side_data(AVBSFContext *bsf, AVPacket *pkt){    CBSBSFContext           *ctx = bsf->priv_data;    CodedBitstreamFragment *frag = &ctx->fragment;    uint8_t *side_data;    int err;     if (!av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, NULL))        return 0;     err = ff_cbs_read_packet_side_data(ctx->input, frag, pkt);    if (err < 0) {        av_log(bsf, AV_LOG_ERROR,               "Failed to read extradata from packet side data.\n");        return err;    }     err = ctx->type->update_fragment(bsf, NULL, frag);    if (err < 0)        return err;     err = ff_cbs_write_fragment_data(ctx->output, frag);    if (err < 0) {        av_log(bsf, AV_LOG_ERROR,               "Failed to write extradata into packet side data.\n");        return err;    }     side_data = av_packet_new_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA,                                        frag->data_size);    if (!side_data)        return AVERROR(ENOMEM);    memcpy(side_data, frag->data, frag->data_size);     ff_cbs_fragment_reset(frag);    return 0;} int ff_cbs_bsf_generic_filter(AVBSFContext *bsf, AVPacket *pkt){    CBSBSFContext           *ctx = bsf->priv_data;    CodedBitstreamFragment *frag = &ctx->fragment;    int err;     err = ff_bsf_get_packet_ref(bsf, pkt);    if (err < 0)        return err;     err = cbs_bsf_update_side_data(bsf, pkt);    if (err < 0)        goto fail;     err = ff_cbs_read_packet(ctx->input, frag, pkt);    if (err < 0) {        av_log(bsf, AV_LOG_ERROR, "Failed to read %s from packet.\n",               ctx->type->fragment_name);        goto fail;    }     if (frag->nb_units == 0) {        av_log(bsf, AV_LOG_ERROR, "No %s found in packet.\n",               ctx->type->unit_name);        err = AVERROR_INVALIDDATA;        goto fail;    }     err = ctx->type->update_fragment(bsf, pkt, frag);    if (err < 0)        goto fail;     err = ff_cbs_write_packet(ctx->output, pkt, frag);    if (err < 0) {        av_log(bsf, AV_LOG_ERROR, "Failed to write %s into packet.\n",               ctx->type->fragment_name);        goto fail;    }     err = 0;fail:    ff_cbs_fragment_reset(frag);     if (err < 0)        av_packet_unref(pkt);     return err;} int ff_cbs_bsf_generic_init(AVBSFContext *bsf, const CBSBSFType *type){    CBSBSFContext           *ctx = bsf->priv_data;    CodedBitstreamFragment *frag = &ctx->fragment;    int err;     ctx->type = type;     err = ff_cbs_init(&ctx->input, type->codec_id, bsf);    if (err < 0)        return err;     err = ff_cbs_init(&ctx->output, type->codec_id, bsf);    if (err < 0)        return err;     ctx->output->trace_enable = 1;    ctx->output->trace_level  = AV_LOG_TRACE;    ctx->output->trace_context = ctx->output;    ctx->output->trace_write_callback = ff_cbs_trace_write_log;     if (bsf->par_in->extradata) {        err = ff_cbs_read_extradata(ctx->input, frag, bsf->par_in);        if (err < 0) {            av_log(bsf, AV_LOG_ERROR, "Failed to read extradata.\n");            goto fail;        }         err = type->update_fragment(bsf, NULL, frag);        if (err < 0)            goto fail;         err = ff_cbs_write_extradata(ctx->output, bsf->par_out, frag);        if (err < 0) {            av_log(bsf, AV_LOG_ERROR, "Failed to write extradata.\n");            goto fail;        }    }     err = 0;fail:    ff_cbs_fragment_reset(frag);    return err;} void ff_cbs_bsf_generic_close(AVBSFContext *bsf){    CBSBSFContext *ctx = bsf->priv_data;     ff_cbs_fragment_free(&ctx->fragment);    ff_cbs_close(&ctx->input);    ff_cbs_close(&ctx->output);}