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65 lines
1.7 KiB
C
65 lines
1.7 KiB
C
/*
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* AHX to MP2 bitstream filter
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* Copyright (c) 2024 Paul B Mahol
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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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/**
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* @file
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* AHX to MP2 bitstream filter.
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*/
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#include "libavutil/intreadwrite.h"
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#include "bsf.h"
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#include "bsf_internal.h"
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static av_cold int init(AVBSFContext *ctx)
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{
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ctx->par_out->codec_id = AV_CODEC_ID_MP2;
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return 0;
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}
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static int filter(AVBSFContext *ctx, AVPacket *pkt)
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{
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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 (pkt->size < 1044) {
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int original_size = pkt->size;
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ret = av_grow_packet(pkt, 1044-pkt->size);
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if (ret < 0) {
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av_packet_unref(pkt);
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return ret;
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}
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memset(pkt->data + original_size, 0, 1044 - original_size);
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}
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return 0;
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}
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const FFBitStreamFilter ff_ahx_to_mp2_bsf = {
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.p.name = "ahx_to_mp2",
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.p.codec_ids = (const enum AVCodecID []){ AV_CODEC_ID_AHX, AV_CODEC_ID_NONE },
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.init = init,
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.filter = filter,
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};
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