GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/assdec.c Lines: 21 26 80.8 %
Date: 2019-11-22 03:34:36 Branches: 6 12 50.0 %

Line Branch Exec Source
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/*
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 * SSA/ASS decoder
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 * Copyright (c) 2010  Aurelien Jacobs <aurel@gnuage.org>
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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 "ass.h"
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#include "libavutil/internal.h"
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#include "libavutil/mem.h"
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static av_cold int ass_decode_init(AVCodecContext *avctx)
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{
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    avctx->subtitle_header = av_malloc(avctx->extradata_size + 1);
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    if (!avctx->subtitle_header)
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        return AVERROR(ENOMEM);
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    if (avctx->extradata_size)
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        memcpy(avctx->subtitle_header, avctx->extradata, avctx->extradata_size);
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    avctx->subtitle_header[avctx->extradata_size] = 0;
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    avctx->subtitle_header_size = avctx->extradata_size;
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    return 0;
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}
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static int ass_decode_frame(AVCodecContext *avctx, void *data, int *got_sub_ptr,
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                            AVPacket *avpkt)
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{
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    AVSubtitle *sub = data;
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    if (avpkt->size <= 0)
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        return avpkt->size;
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    sub->rects = av_malloc(sizeof(*sub->rects));
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    if (!sub->rects)
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        return AVERROR(ENOMEM);
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    sub->rects[0] = av_mallocz(sizeof(*sub->rects[0]));
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    if (!sub->rects[0])
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        return AVERROR(ENOMEM);
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    sub->num_rects = 1;
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    sub->rects[0]->type = SUBTITLE_ASS;
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    sub->rects[0]->ass  = av_strdup(avpkt->data);
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    if (!sub->rects[0]->ass)
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        return AVERROR(ENOMEM);
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    *got_sub_ptr = 1;
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    return avpkt->size;
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}
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#if CONFIG_SSA_DECODER
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AVCodec ff_ssa_decoder = {
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    .name         = "ssa",
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    .long_name    = NULL_IF_CONFIG_SMALL("ASS (Advanced SubStation Alpha) subtitle"),
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    .type         = AVMEDIA_TYPE_SUBTITLE,
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    .id           = AV_CODEC_ID_ASS,
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    .init         = ass_decode_init,
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    .decode       = ass_decode_frame,
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};
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#endif
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#if CONFIG_ASS_DECODER
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AVCodec ff_ass_decoder = {
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    .name         = "ass",
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    .long_name    = NULL_IF_CONFIG_SMALL("ASS (Advanced SubStation Alpha) subtitle"),
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    .type         = AVMEDIA_TYPE_SUBTITLE,
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    .id           = AV_CODEC_ID_ASS,
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    .init         = ass_decode_init,
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    .decode       = ass_decode_frame,
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};
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#endif