From 5952be07dc3fdd7bb9fa497b2a3fd12fc7287b41 Mon Sep 17 00:00:00 2001 From: Aurelien Jacobs Date: Sat, 13 Nov 2010 14:18:59 +0000 Subject: add missing files in previous commit (ASS encoder and decoder) Originally committed as revision 25747 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/assdec.c | 62 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 libavcodec/assdec.c (limited to 'libavcodec/assdec.c') diff --git a/libavcodec/assdec.c b/libavcodec/assdec.c new file mode 100644 index 0000000000..0a7fd4821d --- /dev/null +++ b/libavcodec/assdec.c @@ -0,0 +1,62 @@ +/* + * SSA/ASS decoder + * Copyright (c) 2010 Aurelien Jacobs + * + * 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" + +static av_cold int ass_decode_init(AVCodecContext *avctx) +{ + avctx->subtitle_header = av_malloc(avctx->extradata_size); + if (!avctx->extradata) + return AVERROR(ENOMEM); + memcpy(avctx->subtitle_header, avctx->extradata, avctx->extradata_size); + avctx->subtitle_header_size = avctx->extradata_size; + 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; + + ff_ass_init(data); + + while (size > 0) { + len = ff_ass_add_rect(data, ptr, 0, 0/* FIXME: duration */, 1); + if (len < 0) + return len; + ptr += len; + size -= len; + } + + *got_sub_ptr = avpkt->size > 0; + return avpkt->size; +} + +AVCodec ass_decoder = { + .name = "ass", + .long_name = NULL_IF_CONFIG_SMALL("Advanced SubStation Alpha subtitle"), + .type = AVMEDIA_TYPE_SUBTITLE, + .id = CODEC_ID_SSA, + .init = ass_decode_init, + .decode = ass_decode_frame, +}; -- cgit v1.2.3