mirror of https://github.com/FFmpeg/FFmpeg.git
Originally committed as revision 24973 to svn://svn.ffmpeg.org/ffmpeg/trunkoldabi
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6d0678d182
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b47a5a954a
4 changed files with 85 additions and 64 deletions
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/*
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* RAW Ingenient MJPEG demuxer |
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* Copyright (c) 2005 Alex Beregszaszi |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "avformat.h" |
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#include "raw.h" |
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// http://www.artificis.hu/files/texts/ingenient.txt
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static int ingenient_read_packet(AVFormatContext *s, AVPacket *pkt) |
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{ |
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int ret, size, w, h, unk1, unk2; |
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if (get_le32(s->pb) != MKTAG('M', 'J', 'P', 'G')) |
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return AVERROR(EIO); // FIXME
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size = get_le32(s->pb); |
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w = get_le16(s->pb); |
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h = get_le16(s->pb); |
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url_fskip(s->pb, 8); // zero + size (padded?)
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url_fskip(s->pb, 2); |
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unk1 = get_le16(s->pb); |
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unk2 = get_le16(s->pb); |
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url_fskip(s->pb, 22); // ASCII timestamp
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av_log(s, AV_LOG_DEBUG, "Ingenient packet: size=%d, width=%d, height=%d, unk1=%d unk2=%d\n", |
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size, w, h, unk1, unk2); |
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if (av_new_packet(pkt, size) < 0) |
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return AVERROR(ENOMEM); |
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pkt->pos = url_ftell(s->pb); |
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pkt->stream_index = 0; |
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ret = get_buffer(s->pb, pkt->data, size); |
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if (ret < 0) { |
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av_free_packet(pkt); |
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return ret; |
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} |
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pkt->size = ret; |
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return ret; |
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} |
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AVInputFormat ingenient_demuxer = { |
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"ingenient", |
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NULL_IF_CONFIG_SMALL("raw Ingenient MJPEG"), |
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0, |
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NULL, |
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ff_raw_video_read_header, |
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ingenient_read_packet, |
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.flags= AVFMT_GENERIC_INDEX, |
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.extensions = "cgi", // FIXME
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.value = CODEC_ID_MJPEG, |
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}; |
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