diff options
Diffstat (limited to 'ffmpeg/libavformat/lvfdec.c')
| -rw-r--r-- | ffmpeg/libavformat/lvfdec.c | 152 |
1 files changed, 0 insertions, 152 deletions
diff --git a/ffmpeg/libavformat/lvfdec.c b/ffmpeg/libavformat/lvfdec.c deleted file mode 100644 index 1ff67c8..0000000 --- a/ffmpeg/libavformat/lvfdec.c +++ /dev/null @@ -1,152 +0,0 @@ -/* - * LVF demuxer - * Copyright (c) 2012 Paul B Mahol - * - * 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 "libavutil/intreadwrite.h" -#include "avformat.h" -#include "riff.h" - -static int lvf_probe(AVProbeData *p) -{ - if (AV_RL32(p->buf) != MKTAG('L', 'V', 'F', 'F')) - return 0; - - if (!AV_RL32(p->buf + 16) || AV_RL32(p->buf + 16) > 256) - return AVPROBE_SCORE_MAX / 8; - - return AVPROBE_SCORE_EXTENSION; -} - -static int lvf_read_header(AVFormatContext *s) -{ - AVStream *st; - int64_t next_offset; - unsigned size, nb_streams, id; - - avio_skip(s->pb, 16); - nb_streams = avio_rl32(s->pb); - if (!nb_streams) - return AVERROR_INVALIDDATA; - if (nb_streams > 2) { - avpriv_request_sample(s, "%d streams", nb_streams); - return AVERROR_PATCHWELCOME; - } - - avio_skip(s->pb, 1012); - - while (!url_feof(s->pb)) { - id = avio_rl32(s->pb); - size = avio_rl32(s->pb); - next_offset = avio_tell(s->pb) + size; - - switch (id) { - case MKTAG('0', '0', 'f', 'm'): - st = avformat_new_stream(s, 0); - if (!st) - return AVERROR(ENOMEM); - - st->codec->codec_type = AVMEDIA_TYPE_VIDEO; - avio_skip(s->pb, 4); - st->codec->width = avio_rl32(s->pb); - st->codec->height = avio_rl32(s->pb); - avio_skip(s->pb, 4); - st->codec->codec_tag = avio_rl32(s->pb); - st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, - st->codec->codec_tag); - avpriv_set_pts_info(st, 32, 1, 1000); - break; - case MKTAG('0', '1', 'f', 'm'): - st = avformat_new_stream(s, 0); - if (!st) - return AVERROR(ENOMEM); - - st->codec->codec_type = AVMEDIA_TYPE_AUDIO; - st->codec->codec_tag = avio_rl16(s->pb); - st->codec->channels = avio_rl16(s->pb); - st->codec->sample_rate = avio_rl16(s->pb); - avio_skip(s->pb, 8); - st->codec->bits_per_coded_sample = avio_r8(s->pb); - st->codec->codec_id = ff_codec_get_id(ff_codec_wav_tags, - st->codec->codec_tag); - avpriv_set_pts_info(st, 32, 1, 1000); - break; - case 0: - avio_seek(s->pb, 2048 + 8, SEEK_SET); - return 0; - default: - avpriv_request_sample(s, "id %d", id); - return AVERROR_PATCHWELCOME; - } - - avio_seek(s->pb, next_offset, SEEK_SET); - } - - return AVERROR_EOF; -} - -static int lvf_read_packet(AVFormatContext *s, AVPacket *pkt) -{ - unsigned size, flags, timestamp, id; - int64_t pos; - int ret, is_video = 0; - - pos = avio_tell(s->pb); - while (!url_feof(s->pb)) { - id = avio_rl32(s->pb); - size = avio_rl32(s->pb); - - if (size == 0xFFFFFFFFu) - return AVERROR_EOF; - - switch (id) { - case MKTAG('0', '0', 'd', 'c'): - is_video = 1; - case MKTAG('0', '1', 'w', 'b'): - if (size < 8) - return AVERROR_INVALIDDATA; - timestamp = avio_rl32(s->pb); - flags = avio_rl32(s->pb); - ret = av_get_packet(s->pb, pkt, size - 8); - if (flags & (1 << 12)) - pkt->flags |= AV_PKT_FLAG_KEY; - pkt->stream_index = is_video ? 0 : 1; - pkt->pts = timestamp; - pkt->pos = pos; - return ret; - default: - ret = avio_skip(s->pb, size); - } - - if (ret < 0) - return ret; - } - - return AVERROR_EOF; -} - -AVInputFormat ff_lvf_demuxer = { - .name = "lvf", - .long_name = NULL_IF_CONFIG_SMALL("LVF"), - .read_probe = lvf_probe, - .read_header = lvf_read_header, - .read_packet = lvf_read_packet, - .extensions = "lvf", - .flags = AVFMT_GENERIC_INDEX, -}; |