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c581cb4e4f
* qatar/master: Fix even more missing includes after the common.h removal build: Factor out rangecoder dependencies to CONFIG_RANGECODER build: Factor out error resilience dependencies to CONFIG_ERROR_RESILIENCE x86: avcodec: Consistently name all init files Add more missing includes after removing the implicit common.h Add some more missing includes after removing the implicit common.h Don't include common.h from avutil.h rtmp: Automatically compute the hash for SWFVerification Conflicts: configure doc/APIchanges doc/examples/decoding_encoding.c libavcodec/Makefile libavcodec/assdec.c libavcodec/audio_frame_queue.c libavcodec/avpacket.c libavcodec/dv_profile.c libavcodec/dwt.c libavcodec/libtheoraenc.c libavcodec/rawdec.c libavcodec/rv40dsp.c libavcodec/tiff.c libavcodec/tiffenc.c libavcodec/v210dec.h libavcodec/vc1dsp.c libavcodec/x86/Makefile libavfilter/asrc_anullsrc.c libavfilter/avfilter.c libavfilter/buffer.c libavfilter/formats.c libavfilter/vf_ass.c libavfilter/vf_drawtext.c libavfilter/vf_fade.c libavfilter/vf_select.c libavfilter/video.c libavfilter/vsrc_testsrc.c libavformat/version.h libavutil/audioconvert.c libavutil/error.h libavutil/version.h Merged-by: Michael Niedermayer <michaelni@gmx.at>
82 lines
2.5 KiB
C
82 lines
2.5 KiB
C
/*
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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 "ass_split.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);
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if (!avctx->subtitle_header)
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return AVERROR(ENOMEM);
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memcpy(avctx->subtitle_header, avctx->extradata, avctx->extradata_size);
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avctx->subtitle_header_size = avctx->extradata_size;
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avctx->priv_data = ff_ass_split(avctx->extradata);
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if(!avctx->priv_data)
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return -1;
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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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const char *ptr = avpkt->data;
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int len, size = avpkt->size;
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while (size > 0) {
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int duration;
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ASSDialog *dialog = ff_ass_split_dialog(avctx->priv_data, ptr, 0, NULL);
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if (!dialog)
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return AVERROR_INVALIDDATA;
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duration = dialog->end - dialog->start;
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len = ff_ass_add_rect(data, ptr, 0, duration, 1);
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if (len < 0)
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return len;
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ptr += len;
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size -= len;
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}
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*got_sub_ptr = avpkt->size > 0;
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return avpkt->size;
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}
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static int ass_decode_close(AVCodecContext *avctx)
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{
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ff_ass_split_free(avctx->priv_data);
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avctx->priv_data = NULL;
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return 0;
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}
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AVCodec ff_ass_decoder = {
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.name = "ass",
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.long_name = NULL_IF_CONFIG_SMALL("SSA (SubStation Alpha) subtitle"),
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.type = AVMEDIA_TYPE_SUBTITLE,
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.id = AV_CODEC_ID_SSA,
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.init = ass_decode_init,
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.decode = ass_decode_frame,
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.close = ass_decode_close,
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};
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