diff options
Diffstat (limited to 'ffmpeg/libavcodec/assdec.c')
| -rw-r--r-- | ffmpeg/libavcodec/assdec.c | 120 |
1 files changed, 0 insertions, 120 deletions
diff --git a/ffmpeg/libavcodec/assdec.c b/ffmpeg/libavcodec/assdec.c deleted file mode 100644 index 11dbde0..0000000 --- a/ffmpeg/libavcodec/assdec.c +++ /dev/null @@ -1,120 +0,0 @@ -/* - * 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 <string.h> - -#include "avcodec.h" -#include "ass.h" -#include "ass_split.h" -#include "libavutil/internal.h" -#include "libavutil/mem.h" - -static av_cold int ass_decode_init(AVCodecContext *avctx) -{ - avctx->subtitle_header = av_malloc(avctx->extradata_size + 1); - if (!avctx->subtitle_header) - return AVERROR(ENOMEM); - memcpy(avctx->subtitle_header, avctx->extradata, avctx->extradata_size); - avctx->subtitle_header[avctx->extradata_size] = 0; - 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_close(AVCodecContext *avctx) -{ - ff_ass_split_free(avctx->priv_data); - avctx->priv_data = NULL; - return 0; -} - -#if CONFIG_SSA_DECODER -static int ssa_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; -} - -AVCodec ff_ssa_decoder = { - .name = "ssa", - .long_name = NULL_IF_CONFIG_SMALL("SSA (SubStation Alpha) subtitle"), - .type = AVMEDIA_TYPE_SUBTITLE, - .id = AV_CODEC_ID_SSA, - .init = ass_decode_init, - .decode = ssa_decode_frame, - .close = ass_decode_close, -}; -#endif - -#if CONFIG_ASS_DECODER -static int ass_decode_frame(AVCodecContext *avctx, void *data, int *got_sub_ptr, - AVPacket *avpkt) -{ - int ret; - AVSubtitle *sub = data; - const char *ptr = avpkt->data; - static const AVRational ass_tb = {1, 100}; - const int ts_start = av_rescale_q(avpkt->pts, avctx->time_base, ass_tb); - const int ts_duration = av_rescale_q(avpkt->duration, avctx->time_base, ass_tb); - - if (avpkt->size <= 0) - return avpkt->size; - - ret = ff_ass_add_rect(sub, ptr, ts_start, ts_duration, 2); - if (ret < 0) { - if (ret == AVERROR_INVALIDDATA) - av_log(avctx, AV_LOG_ERROR, "Invalid ASS packet\n"); - return ret; - } - - *got_sub_ptr = avpkt->size > 0; - return avpkt->size; -} - -AVCodec ff_ass_decoder = { - .name = "ass", - .long_name = NULL_IF_CONFIG_SMALL("ASS (Advanced SubStation Alpha) subtitle"), - .type = AVMEDIA_TYPE_SUBTITLE, - .id = AV_CODEC_ID_ASS, - .init = ass_decode_init, - .decode = ass_decode_frame, - .close = ass_decode_close, -}; -#endif |