diff options
Diffstat (limited to 'ffmpeg1/libavformat/samidec.c')
| -rw-r--r-- | ffmpeg1/libavformat/samidec.c | 137 |
1 files changed, 0 insertions, 137 deletions
diff --git a/ffmpeg1/libavformat/samidec.c b/ffmpeg1/libavformat/samidec.c deleted file mode 100644 index 2eaee6f..0000000 --- a/ffmpeg1/libavformat/samidec.c +++ /dev/null @@ -1,137 +0,0 @@ -/* - * Copyright (c) 2012 Clément Bœsch - * - * 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 - */ - -/** - * @file - * SAMI subtitle demuxer - * @see http://msdn.microsoft.com/en-us/library/ms971327.aspx - */ - -#include "avformat.h" -#include "internal.h" -#include "subtitles.h" -#include "libavcodec/internal.h" -#include "libavutil/avstring.h" -#include "libavutil/bprint.h" -#include "libavutil/intreadwrite.h" - -typedef struct { - FFDemuxSubtitlesQueue q; -} SAMIContext; - -static int sami_probe(AVProbeData *p) -{ - const unsigned char *ptr = p->buf; - - if (AV_RB24(ptr) == 0xEFBBBF) - ptr += 3; /* skip UTF-8 BOM */ - return !strncmp(ptr, "<SAMI>", 6) ? AVPROBE_SCORE_MAX : 0; -} - -static int sami_read_header(AVFormatContext *s) -{ - SAMIContext *sami = s->priv_data; - AVStream *st = avformat_new_stream(s, NULL); - AVBPrint buf, hdr_buf; - char c = 0; - int res = 0, got_first_sync_point = 0; - - if (!st) - return AVERROR(ENOMEM); - avpriv_set_pts_info(st, 64, 1, 1000); - st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE; - st->codec->codec_id = AV_CODEC_ID_SAMI; - - av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED); - av_bprint_init(&hdr_buf, 0, AV_BPRINT_SIZE_UNLIMITED); - - while (!url_feof(s->pb)) { - AVPacket *sub; - const int64_t pos = avio_tell(s->pb) - (c != 0); - int is_sync, n = ff_smil_extract_next_chunk(s->pb, &buf, &c); - - if (n == 0) - break; - - is_sync = !av_strncasecmp(buf.str, "<SYNC", 5); - if (is_sync) - got_first_sync_point = 1; - - if (!got_first_sync_point) { - av_bprintf(&hdr_buf, "%s", buf.str); - } else { - sub = ff_subtitles_queue_insert(&sami->q, buf.str, buf.len, !is_sync); - if (!sub) { - res = AVERROR(ENOMEM); - goto end; - } - if (is_sync) { - const char *p = ff_smil_get_attr_ptr(buf.str, "Start"); - sub->pos = pos; - sub->pts = p ? strtol(p, NULL, 10) : 0; - sub->duration = -1; - } - } - av_bprint_clear(&buf); - } - - res = avpriv_bprint_to_extradata(st->codec, &hdr_buf); - if (res < 0) - goto end; - - ff_subtitles_queue_finalize(&sami->q); - -end: - av_bprint_finalize(&buf, NULL); - return res; -} - -static int sami_read_packet(AVFormatContext *s, AVPacket *pkt) -{ - SAMIContext *sami = s->priv_data; - return ff_subtitles_queue_read_packet(&sami->q, pkt); -} - -static int sami_read_seek(AVFormatContext *s, int stream_index, - int64_t min_ts, int64_t ts, int64_t max_ts, int flags) -{ - SAMIContext *sami = s->priv_data; - return ff_subtitles_queue_seek(&sami->q, s, stream_index, - min_ts, ts, max_ts, flags); -} - -static int sami_read_close(AVFormatContext *s) -{ - SAMIContext *sami = s->priv_data; - ff_subtitles_queue_clean(&sami->q); - return 0; -} - -AVInputFormat ff_sami_demuxer = { - .name = "sami", - .long_name = NULL_IF_CONFIG_SMALL("SAMI subtitle format"), - .priv_data_size = sizeof(SAMIContext), - .read_probe = sami_probe, - .read_header = sami_read_header, - .read_packet = sami_read_packet, - .read_seek2 = sami_read_seek, - .read_close = sami_read_close, - .extensions = "smi,sami", -}; |