mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-09-24 07:17:04 +00:00
7a72695c05
* commit '36ef5369ee9b336febc2c270f8718cec4476cb85': Replace all CODEC_ID_* with AV_CODEC_ID_* lavc: add AV prefix to codec ids. Conflicts: doc/APIchanges doc/examples/decoding_encoding.c doc/examples/muxing.c ffmpeg.c ffprobe.c ffserver.c libavcodec/8svx.c libavcodec/avcodec.h libavcodec/dnxhd_parser.c libavcodec/dvdsubdec.c libavcodec/error_resilience.c libavcodec/h263dec.c libavcodec/libvorbisenc.c libavcodec/mjpeg_parser.c libavcodec/mjpegenc.c libavcodec/mpeg12.c libavcodec/mpeg4videodec.c libavcodec/mpegvideo.c libavcodec/mpegvideo_enc.c libavcodec/pcm.c libavcodec/r210dec.c libavcodec/utils.c libavcodec/v210dec.c libavcodec/version.h libavdevice/alsa-audio-dec.c libavdevice/bktr.c libavdevice/v4l2.c libavformat/asfdec.c libavformat/asfenc.c libavformat/avformat.h libavformat/avidec.c libavformat/caf.c libavformat/electronicarts.c libavformat/flacdec.c libavformat/flvdec.c libavformat/flvenc.c libavformat/framecrcenc.c libavformat/img2.c libavformat/img2dec.c libavformat/img2enc.c libavformat/ipmovie.c libavformat/isom.c libavformat/matroska.c libavformat/matroskadec.c libavformat/matroskaenc.c libavformat/mov.c libavformat/movenc.c libavformat/mp3dec.c libavformat/mpeg.c libavformat/mpegts.c libavformat/mxf.c libavformat/mxfdec.c libavformat/mxfenc.c libavformat/nsvdec.c libavformat/nut.c libavformat/oggenc.c libavformat/pmpdec.c libavformat/rawdec.c libavformat/rawenc.c libavformat/riff.c libavformat/sdp.c libavformat/utils.c libavformat/vocenc.c libavformat/wtv.c libavformat/xmv.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
78 lines
2.4 KiB
C
78 lines
2.4 KiB
C
/*
|
|
* SSA/ASS decoder
|
|
* Copyright (c) 2010 Aurelien Jacobs <aurel@gnuage.org>
|
|
*
|
|
* 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 "avcodec.h"
|
|
#include "ass.h"
|
|
#include "ass_split.h"
|
|
|
|
static av_cold int ass_decode_init(AVCodecContext *avctx)
|
|
{
|
|
avctx->subtitle_header = av_malloc(avctx->extradata_size);
|
|
if (!avctx->subtitle_header)
|
|
return AVERROR(ENOMEM);
|
|
memcpy(avctx->subtitle_header, avctx->extradata, avctx->extradata_size);
|
|
avctx->subtitle_header_size = avctx->extradata_size;
|
|
avctx->priv_data = ff_ass_split(avctx->extradata);
|
|
if(!avctx->priv_data)
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
static int ass_decode_frame(AVCodecContext *avctx, void *data, int *got_sub_ptr,
|
|
AVPacket *avpkt)
|
|
{
|
|
const char *ptr = avpkt->data;
|
|
int len, size = avpkt->size;
|
|
|
|
while (size > 0) {
|
|
int duration;
|
|
ASSDialog *dialog = ff_ass_split_dialog(avctx->priv_data, ptr, 0, NULL);
|
|
if (!dialog)
|
|
return AVERROR_INVALIDDATA;
|
|
duration = dialog->end - dialog->start;
|
|
len = ff_ass_add_rect(data, ptr, 0, duration, 1);
|
|
if (len < 0)
|
|
return len;
|
|
ptr += len;
|
|
size -= len;
|
|
}
|
|
|
|
*got_sub_ptr = avpkt->size > 0;
|
|
return avpkt->size;
|
|
}
|
|
|
|
static int ass_decode_close(AVCodecContext *avctx)
|
|
{
|
|
ff_ass_split_free(avctx->priv_data);
|
|
avctx->priv_data = NULL;
|
|
return 0;
|
|
}
|
|
|
|
AVCodec ff_ass_decoder = {
|
|
.name = "ass",
|
|
.long_name = NULL_IF_CONFIG_SMALL("SSA (SubStation Alpha) subtitle"),
|
|
.type = AVMEDIA_TYPE_SUBTITLE,
|
|
.id = AV_CODEC_ID_SSA,
|
|
.init = ass_decode_init,
|
|
.decode = ass_decode_frame,
|
|
.close = ass_decode_close,
|
|
};
|