2008-03-30 21:17:01 +02:00
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/*
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* Copyright (c) 2008 Jaikrishnan Menon <realityman@gmx.net>
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2010-02-03 10:57:21 +01:00
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* Copyright (c) 2010 Peter Ross <pross@xvid.org>
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2010-04-27 16:03:47 +02:00
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* Copyright (c) 2010 Sebastian Vater <cdgs.basty@googlemail.com>
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2008-03-30 21:17:01 +02:00
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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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/**
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2010-04-20 16:45:34 +02:00
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* @file
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2008-03-31 19:31:11 +02:00
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* IFF file demuxer
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2008-03-30 21:17:01 +02:00
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* by Jaikrishnan Menon
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* for more information on the .iff file format, visit:
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* http://wiki.multimedia.cx/index.php?title=IFF
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*/
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2012-08-10 16:26:39 +02:00
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#include "libavutil/avassert.h"
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2012-04-07 20:05:45 +02:00
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#include "libavutil/channel_layout.h"
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2009-01-11 23:19:48 +01:00
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#include "libavutil/intreadwrite.h"
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2011-05-22 12:46:29 +02:00
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#include "libavutil/dict.h"
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2012-11-13 10:55:07 +01:00
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#include "libavcodec/bytestream.h"
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2008-03-30 21:17:01 +02:00
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#include "avformat.h"
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2011-11-29 19:28:15 +01:00
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#include "internal.h"
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2008-03-30 21:17:01 +02:00
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#define ID_8SVX MKTAG('8','S','V','X')
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2012-11-28 16:53:25 +01:00
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#define ID_16SV MKTAG('1','6','S','V')
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2012-11-29 11:45:28 +01:00
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#define ID_MAUD MKTAG('M','A','U','D')
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#define ID_MHDR MKTAG('M','H','D','R')
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#define ID_MDAT MKTAG('M','D','A','T')
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2008-03-30 21:17:01 +02:00
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#define ID_VHDR MKTAG('V','H','D','R')
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#define ID_ATAK MKTAG('A','T','A','K')
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#define ID_RLSE MKTAG('R','L','S','E')
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#define ID_CHAN MKTAG('C','H','A','N')
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2010-02-03 10:57:21 +01:00
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#define ID_PBM MKTAG('P','B','M',' ')
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#define ID_ILBM MKTAG('I','L','B','M')
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#define ID_BMHD MKTAG('B','M','H','D')
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2012-03-08 23:34:36 +01:00
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#define ID_DGBL MKTAG('D','G','B','L')
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2011-04-20 13:56:56 +02:00
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#define ID_CAMG MKTAG('C','A','M','G')
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2010-02-03 10:57:21 +01:00
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#define ID_CMAP MKTAG('C','M','A','P')
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2011-11-21 20:31:47 +01:00
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#define ID_ACBM MKTAG('A','C','B','M')
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2012-03-08 23:34:36 +01:00
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#define ID_DEEP MKTAG('D','E','E','P')
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2012-11-30 00:42:15 +01:00
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#define ID_RGB8 MKTAG('R','G','B','8')
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#define ID_RGBN MKTAG('R','G','B','N')
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2008-03-30 21:17:01 +02:00
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#define ID_FORM MKTAG('F','O','R','M')
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#define ID_ANNO MKTAG('A','N','N','O')
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#define ID_AUTH MKTAG('A','U','T','H')
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#define ID_CHRS MKTAG('C','H','R','S')
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#define ID_COPYRIGHT MKTAG('(','c',')',' ')
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#define ID_CSET MKTAG('C','S','E','T')
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#define ID_FVER MKTAG('F','V','E','R')
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#define ID_NAME MKTAG('N','A','M','E')
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#define ID_TEXT MKTAG('T','E','X','T')
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2011-11-21 20:31:47 +01:00
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#define ID_ABIT MKTAG('A','B','I','T')
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2008-03-30 21:17:01 +02:00
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#define ID_BODY MKTAG('B','O','D','Y')
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2012-03-08 23:34:36 +01:00
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#define ID_DBOD MKTAG('D','B','O','D')
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#define ID_DPEL MKTAG('D','P','E','L')
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2012-11-18 09:02:03 +01:00
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#define ID_DLOC MKTAG('D','L','O','C')
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2012-11-25 05:12:56 +01:00
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#define ID_TVDC MKTAG('T','V','D','C')
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2008-03-30 21:17:01 +02:00
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#define LEFT 2
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#define RIGHT 4
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#define STEREO 6
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2011-04-20 13:56:56 +02:00
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/**
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* This number of bytes if added at the beginning of each AVPacket
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* which contain additional information about video properties
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* which has to be shared between demuxer and decoder.
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* This number may change between frames, e.g. the demuxer might
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* set it to smallest possible size of 2 to indicate that there's
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* no extradata changing in this frame.
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*/
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2012-11-25 05:12:56 +01:00
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#define IFF_EXTRA_VIDEO_SIZE 41
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2011-04-20 13:56:56 +02:00
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2010-04-20 20:40:45 +02:00
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typedef enum {
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COMP_NONE,
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COMP_FIB,
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COMP_EXP
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} svx8_compression_type;
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2008-03-30 21:17:01 +02:00
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typedef struct {
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2010-04-27 16:03:47 +02:00
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uint64_t body_pos;
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2008-03-30 21:17:01 +02:00
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uint32_t body_size;
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uint32_t sent_bytes;
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2011-05-10 15:33:36 +02:00
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svx8_compression_type svx8_compression;
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2012-11-29 11:45:28 +01:00
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unsigned maud_bits;
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unsigned maud_compression;
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2012-11-22 10:42:37 +01:00
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unsigned bitmap_compression; ///< delta compression method used
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2011-04-20 13:56:56 +02:00
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unsigned bpp; ///< bits per plane to decode (differs from bits_per_coded_sample if HAM)
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unsigned ham; ///< 0 if non-HAM or number of hold bits (6 for bpp > 6, 4 otherwise)
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unsigned flags; ///< 1 for EHB, 0 is no extra half darkening
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unsigned transparency; ///< transparency color index in palette
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unsigned masking; ///< masking method used
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2012-11-25 05:12:56 +01:00
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uint8_t tvdc[32]; ///< TVDC lookup table
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2008-03-30 21:17:01 +02:00
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} IffDemuxContext;
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2010-05-05 19:26:59 +02:00
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/* Metadata string read */
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static int get_metadata(AVFormatContext *s,
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const char *const tag,
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const unsigned data_size)
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{
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uint8_t *buf = ((data_size + 1) == 0) ? NULL : av_malloc(data_size + 1);
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if (!buf)
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return AVERROR(ENOMEM);
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2011-02-21 16:43:01 +01:00
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if (avio_read(s->pb, buf, data_size) < 0) {
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2010-05-05 19:26:59 +02:00
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av_free(buf);
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return AVERROR(EIO);
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}
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buf[data_size] = 0;
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2011-05-22 12:46:29 +02:00
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av_dict_set(&s->metadata, tag, buf, AV_DICT_DONT_STRDUP_VAL);
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2010-05-05 19:26:59 +02:00
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return 0;
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}
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2008-03-30 21:17:01 +02:00
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static int iff_probe(AVProbeData *p)
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{
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const uint8_t *d = p->buf;
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2012-07-23 23:15:23 +02:00
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if ( AV_RL32(d) == ID_FORM &&
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(AV_RL32(d+8) == ID_8SVX ||
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2012-11-28 16:53:25 +01:00
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AV_RL32(d+8) == ID_16SV ||
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2012-11-29 11:45:28 +01:00
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AV_RL32(d+8) == ID_MAUD ||
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2012-07-23 23:15:23 +02:00
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AV_RL32(d+8) == ID_PBM ||
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AV_RL32(d+8) == ID_ACBM ||
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AV_RL32(d+8) == ID_DEEP ||
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2012-11-30 00:42:15 +01:00
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AV_RL32(d+8) == ID_ILBM ||
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AV_RL32(d+8) == ID_RGB8 ||
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AV_RL32(d+8) == ID_RGBN) )
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2008-03-30 21:17:01 +02:00
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return AVPROBE_SCORE_MAX;
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return 0;
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}
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2012-03-08 23:34:36 +01:00
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static const uint8_t deep_rgb24[] = {0, 0, 0, 3, 0, 1, 0, 8, 0, 2, 0, 8, 0, 3, 0, 8};
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static const uint8_t deep_rgba[] = {0, 0, 0, 4, 0, 1, 0, 8, 0, 2, 0, 8, 0, 3, 0, 8};
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2012-11-18 09:01:41 +01:00
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static const uint8_t deep_bgra[] = {0, 0, 0, 4, 0, 3, 0, 8, 0, 2, 0, 8, 0, 1, 0, 8};
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static const uint8_t deep_argb[] = {0, 0, 0, 4, 0,17, 0, 8, 0, 1, 0, 8, 0, 2, 0, 8};
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static const uint8_t deep_abgr[] = {0, 0, 0, 4, 0,17, 0, 8, 0, 3, 0, 8, 0, 2, 0, 8};
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2012-03-08 23:34:36 +01:00
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2012-01-12 13:20:36 +01:00
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static int iff_read_header(AVFormatContext *s)
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2008-03-30 21:17:01 +02:00
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{
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IffDemuxContext *iff = s->priv_data;
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2011-02-20 11:04:12 +01:00
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AVIOContext *pb = s->pb;
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2008-03-30 21:17:01 +02:00
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AVStream *st;
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2011-04-20 13:56:56 +02:00
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uint8_t *buf;
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2008-03-30 21:17:01 +02:00
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uint32_t chunk_id, data_size;
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2012-11-29 11:45:28 +01:00
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uint32_t screenmode = 0, num, den;
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2011-04-20 13:56:56 +02:00
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unsigned transparency = 0;
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unsigned masking = 0; // no mask
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2012-03-08 23:34:36 +01:00
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uint8_t fmt[16];
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int fmt_size;
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2008-03-30 21:17:01 +02:00
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2011-06-18 11:43:24 +02:00
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st = avformat_new_stream(s, NULL);
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2008-03-30 21:17:01 +02:00
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if (!st)
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2010-04-27 16:04:11 +02:00
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return AVERROR(ENOMEM);
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2008-03-30 21:17:01 +02:00
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st->codec->channels = 1;
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2012-04-07 20:05:45 +02:00
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st->codec->channel_layout = AV_CH_LAYOUT_MONO;
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2011-03-15 09:14:38 +01:00
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avio_skip(pb, 8);
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2010-02-03 10:57:21 +01:00
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// codec_tag used by ByteRun1 decoder to distinguish progressive (PBM) and interlaced (ILBM) content
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2011-02-21 16:43:01 +01:00
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st->codec->codec_tag = avio_rl32(pb);
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2012-11-30 11:44:00 +01:00
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iff->bitmap_compression = -1;
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iff->svx8_compression = -1;
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iff->maud_bits = -1;
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iff->maud_compression = -1;
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2008-03-30 21:17:01 +02:00
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2010-04-27 16:03:47 +02:00
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while(!url_feof(pb)) {
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uint64_t orig_pos;
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2010-05-05 19:26:59 +02:00
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int res;
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const char *metadata_tag = NULL;
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2011-02-21 16:43:01 +01:00
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chunk_id = avio_rl32(pb);
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data_size = avio_rb32(pb);
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2011-03-03 20:11:45 +01:00
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orig_pos = avio_tell(pb);
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2008-03-30 21:17:01 +02:00
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switch(chunk_id) {
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case ID_VHDR:
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2010-03-31 01:30:55 +02:00
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st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
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2010-04-27 16:03:47 +02:00
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if (data_size < 14)
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return AVERROR_INVALIDDATA;
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2011-03-15 09:14:38 +01:00
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avio_skip(pb, 12);
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2011-02-21 16:43:01 +01:00
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st->codec->sample_rate = avio_rb16(pb);
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2010-04-27 16:03:47 +02:00
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if (data_size >= 16) {
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2011-03-15 09:14:38 +01:00
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avio_skip(pb, 1);
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2011-05-10 15:33:36 +02:00
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iff->svx8_compression = avio_r8(pb);
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2010-04-27 16:03:47 +02:00
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}
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2008-03-30 21:17:01 +02:00
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break;
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2012-11-29 11:45:28 +01:00
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case ID_MHDR:
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st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
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if (data_size < 32)
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return AVERROR_INVALIDDATA;
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avio_skip(pb, 4);
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iff->maud_bits = avio_rb16(pb);
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avio_skip(pb, 2);
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num = avio_rb32(pb);
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den = avio_rb16(pb);
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if (!den)
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return AVERROR_INVALIDDATA;
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avio_skip(pb, 2);
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st->codec->sample_rate = num / den;
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st->codec->channels = avio_rb16(pb);
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iff->maud_compression = avio_rb16(pb);
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if (st->codec->channels == 1)
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st->codec->channel_layout = AV_CH_LAYOUT_MONO;
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else if (st->codec->channels == 2)
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st->codec->channel_layout = AV_CH_LAYOUT_STEREO;
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break;
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2011-11-21 20:31:47 +01:00
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case ID_ABIT:
|
2008-03-30 21:17:01 +02:00
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case ID_BODY:
|
2012-03-08 23:34:36 +01:00
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case ID_DBOD:
|
2012-11-29 11:45:28 +01:00
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case ID_MDAT:
|
2011-03-03 20:11:45 +01:00
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iff->body_pos = avio_tell(pb);
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2008-03-30 21:17:01 +02:00
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iff->body_size = data_size;
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break;
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case ID_CHAN:
|
2010-04-27 16:03:47 +02:00
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if (data_size < 4)
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return AVERROR_INVALIDDATA;
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2012-04-07 20:05:45 +02:00
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if (avio_rb32(pb) < 6) {
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st->codec->channels = 1;
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st->codec->channel_layout = AV_CH_LAYOUT_MONO;
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} else {
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st->codec->channels = 2;
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st->codec->channel_layout = AV_CH_LAYOUT_STEREO;
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}
|
2008-03-30 21:17:01 +02:00
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break;
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|
2011-04-20 13:56:56 +02:00
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case ID_CAMG:
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if (data_size < 4)
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return AVERROR_INVALIDDATA;
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screenmode = avio_rb32(pb);
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break;
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|
2010-02-03 10:57:21 +01:00
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case ID_CMAP:
|
2011-04-20 13:56:56 +02:00
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st->codec->extradata_size = data_size + IFF_EXTRA_VIDEO_SIZE;
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st->codec->extradata = av_malloc(data_size + IFF_EXTRA_VIDEO_SIZE + FF_INPUT_BUFFER_PADDING_SIZE);
|
2010-02-03 10:57:21 +01:00
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if (!st->codec->extradata)
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return AVERROR(ENOMEM);
|
2011-04-20 13:56:56 +02:00
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|
if (avio_read(pb, st->codec->extradata + IFF_EXTRA_VIDEO_SIZE, data_size) < 0)
|
2010-02-03 10:57:21 +01:00
|
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|
return AVERROR(EIO);
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|
break;
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case ID_BMHD:
|
2010-03-31 01:30:55 +02:00
|
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|
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
|
2010-04-27 16:03:47 +02:00
|
|
|
if (data_size <= 8)
|
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|
|
return AVERROR_INVALIDDATA;
|
2011-02-21 16:43:01 +01:00
|
|
|
st->codec->width = avio_rb16(pb);
|
|
|
|
st->codec->height = avio_rb16(pb);
|
2011-03-15 09:14:38 +01:00
|
|
|
avio_skip(pb, 4); // x, y offset
|
2011-02-21 16:43:01 +01:00
|
|
|
st->codec->bits_per_coded_sample = avio_r8(pb);
|
2011-04-20 13:56:56 +02:00
|
|
|
if (data_size >= 10)
|
|
|
|
masking = avio_r8(pb);
|
|
|
|
if (data_size >= 11)
|
2011-05-10 15:33:36 +02:00
|
|
|
iff->bitmap_compression = avio_r8(pb);
|
2011-04-20 13:56:56 +02:00
|
|
|
if (data_size >= 14) {
|
|
|
|
avio_skip(pb, 1); // padding
|
|
|
|
transparency = avio_rb16(pb);
|
2010-04-27 16:03:47 +02:00
|
|
|
}
|
|
|
|
if (data_size >= 16) {
|
2011-02-21 16:43:01 +01:00
|
|
|
st->sample_aspect_ratio.num = avio_r8(pb);
|
|
|
|
st->sample_aspect_ratio.den = avio_r8(pb);
|
2010-04-27 16:03:47 +02:00
|
|
|
}
|
2010-02-03 10:57:21 +01:00
|
|
|
break;
|
|
|
|
|
2012-03-08 23:34:36 +01:00
|
|
|
case ID_DPEL:
|
|
|
|
if (data_size < 4 || (data_size & 3))
|
|
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
if ((fmt_size = avio_read(pb, fmt, sizeof(fmt))) < 0)
|
|
|
|
return fmt_size;
|
|
|
|
if (fmt_size == sizeof(deep_rgb24) && !memcmp(fmt, deep_rgb24, sizeof(deep_rgb24)))
|
2012-10-08 20:54:00 +02:00
|
|
|
st->codec->pix_fmt = AV_PIX_FMT_RGB24;
|
2012-03-08 23:34:36 +01:00
|
|
|
else if (fmt_size == sizeof(deep_rgba) && !memcmp(fmt, deep_rgba, sizeof(deep_rgba)))
|
2012-10-08 20:54:00 +02:00
|
|
|
st->codec->pix_fmt = AV_PIX_FMT_RGBA;
|
2012-11-18 09:01:41 +01:00
|
|
|
else if (fmt_size == sizeof(deep_bgra) && !memcmp(fmt, deep_bgra, sizeof(deep_bgra)))
|
|
|
|
st->codec->pix_fmt = AV_PIX_FMT_BGRA;
|
|
|
|
else if (fmt_size == sizeof(deep_argb) && !memcmp(fmt, deep_argb, sizeof(deep_argb)))
|
|
|
|
st->codec->pix_fmt = AV_PIX_FMT_ARGB;
|
|
|
|
else if (fmt_size == sizeof(deep_abgr) && !memcmp(fmt, deep_abgr, sizeof(deep_abgr)))
|
|
|
|
st->codec->pix_fmt = AV_PIX_FMT_ABGR;
|
2012-03-08 23:34:36 +01:00
|
|
|
else {
|
2012-07-21 18:05:22 +02:00
|
|
|
av_log_ask_for_sample(s, "unsupported color format\n");
|
2012-03-08 23:34:36 +01:00
|
|
|
return AVERROR_PATCHWELCOME;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case ID_DGBL:
|
|
|
|
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
|
|
|
|
if (data_size < 8)
|
|
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
st->codec->width = avio_rb16(pb);
|
|
|
|
st->codec->height = avio_rb16(pb);
|
|
|
|
iff->bitmap_compression = avio_rb16(pb);
|
|
|
|
st->sample_aspect_ratio.num = avio_r8(pb);
|
|
|
|
st->sample_aspect_ratio.den = avio_r8(pb);
|
|
|
|
st->codec->bits_per_coded_sample = 24;
|
|
|
|
break;
|
|
|
|
|
2012-11-18 09:02:03 +01:00
|
|
|
case ID_DLOC:
|
|
|
|
if (data_size < 4)
|
|
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
st->codec->width = avio_rb16(pb);
|
|
|
|
st->codec->height = avio_rb16(pb);
|
|
|
|
break;
|
|
|
|
|
2012-11-25 05:12:56 +01:00
|
|
|
case ID_TVDC:
|
|
|
|
if (data_size < sizeof(iff->tvdc))
|
|
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
res = avio_read(pb, iff->tvdc, sizeof(iff->tvdc));
|
|
|
|
if (res < 0)
|
|
|
|
return res;
|
|
|
|
break;
|
|
|
|
|
2010-02-16 10:55:56 +01:00
|
|
|
case ID_ANNO:
|
2011-05-13 23:28:18 +02:00
|
|
|
case ID_TEXT: metadata_tag = "comment"; break;
|
|
|
|
case ID_AUTH: metadata_tag = "artist"; break;
|
|
|
|
case ID_COPYRIGHT: metadata_tag = "copyright"; break;
|
|
|
|
case ID_NAME: metadata_tag = "title"; break;
|
2008-03-30 21:17:01 +02:00
|
|
|
}
|
2010-04-27 16:03:47 +02:00
|
|
|
|
2010-05-05 19:26:59 +02:00
|
|
|
if (metadata_tag) {
|
|
|
|
if ((res = get_metadata(s, metadata_tag, data_size)) < 0) {
|
2012-09-01 12:35:14 +02:00
|
|
|
av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!\n", metadata_tag);
|
2010-05-05 19:26:59 +02:00
|
|
|
return res;
|
|
|
|
}
|
|
|
|
}
|
2011-03-15 09:14:38 +01:00
|
|
|
avio_skip(pb, data_size - (avio_tell(pb) - orig_pos) + (data_size & 1));
|
2008-03-30 21:17:01 +02:00
|
|
|
}
|
|
|
|
|
2011-02-28 14:57:54 +01:00
|
|
|
avio_seek(pb, iff->body_pos, SEEK_SET);
|
2010-04-27 16:03:47 +02:00
|
|
|
|
2010-02-03 10:57:21 +01:00
|
|
|
switch(st->codec->codec_type) {
|
2010-03-31 01:30:55 +02:00
|
|
|
case AVMEDIA_TYPE_AUDIO:
|
2011-11-29 19:28:15 +01:00
|
|
|
avpriv_set_pts_info(st, 32, 1, st->codec->sample_rate);
|
2008-03-30 21:17:01 +02:00
|
|
|
|
2012-11-28 16:53:25 +01:00
|
|
|
if (st->codec->codec_tag == ID_16SV)
|
|
|
|
st->codec->codec_id = AV_CODEC_ID_PCM_S16BE_PLANAR;
|
2012-11-29 11:45:28 +01:00
|
|
|
else if (st->codec->codec_tag == ID_MAUD) {
|
|
|
|
if (iff->maud_bits == 8 && !iff->maud_compression) {
|
|
|
|
st->codec->codec_id = AV_CODEC_ID_PCM_U8;
|
|
|
|
} else if (iff->maud_bits == 16 && !iff->maud_compression) {
|
|
|
|
st->codec->codec_id = AV_CODEC_ID_PCM_S16BE;
|
|
|
|
} else if (iff->maud_bits == 8 && iff->maud_compression == 2) {
|
|
|
|
st->codec->codec_id = AV_CODEC_ID_PCM_ALAW;
|
|
|
|
} else if (iff->maud_bits == 8 && iff->maud_compression == 3) {
|
|
|
|
st->codec->codec_id = AV_CODEC_ID_PCM_MULAW;
|
|
|
|
} else {
|
|
|
|
av_log_ask_for_sample(s, "unsupported compression %d and bit depth %d\n", iff->maud_compression, iff->maud_bits);
|
|
|
|
return AVERROR_PATCHWELCOME;
|
|
|
|
}
|
|
|
|
|
|
|
|
st->codec->bits_per_coded_sample =
|
|
|
|
av_get_bits_per_sample(st->codec->codec_id);
|
|
|
|
|
|
|
|
st->codec->block_align =
|
|
|
|
st->codec->bits_per_coded_sample * st->codec->channels / 8;
|
|
|
|
} else {
|
2011-05-10 15:33:36 +02:00
|
|
|
switch (iff->svx8_compression) {
|
2010-04-20 20:40:45 +02:00
|
|
|
case COMP_NONE:
|
2012-08-05 11:11:04 +02:00
|
|
|
st->codec->codec_id = AV_CODEC_ID_PCM_S8_PLANAR;
|
2010-04-20 20:40:45 +02:00
|
|
|
break;
|
|
|
|
case COMP_FIB:
|
2012-08-05 11:11:04 +02:00
|
|
|
st->codec->codec_id = AV_CODEC_ID_8SVX_FIB;
|
2010-04-20 20:40:45 +02:00
|
|
|
break;
|
|
|
|
case COMP_EXP:
|
2012-08-05 11:11:04 +02:00
|
|
|
st->codec->codec_id = AV_CODEC_ID_8SVX_EXP;
|
2010-04-20 20:40:45 +02:00
|
|
|
break;
|
|
|
|
default:
|
2011-05-10 15:33:36 +02:00
|
|
|
av_log(s, AV_LOG_ERROR,
|
|
|
|
"Unknown SVX8 compression method '%d'\n", iff->svx8_compression);
|
2010-04-20 20:40:45 +02:00
|
|
|
return -1;
|
|
|
|
}
|
2012-11-28 16:53:25 +01:00
|
|
|
}
|
2008-03-30 21:17:01 +02:00
|
|
|
|
2012-11-28 16:53:25 +01:00
|
|
|
st->codec->bits_per_coded_sample = av_get_bits_per_sample(st->codec->codec_id);
|
2010-04-20 20:40:45 +02:00
|
|
|
st->codec->bit_rate = st->codec->channels * st->codec->sample_rate * st->codec->bits_per_coded_sample;
|
|
|
|
st->codec->block_align = st->codec->channels * st->codec->bits_per_coded_sample;
|
|
|
|
break;
|
2010-02-03 10:57:21 +01:00
|
|
|
|
2010-03-31 01:30:55 +02:00
|
|
|
case AVMEDIA_TYPE_VIDEO:
|
2011-04-20 13:56:56 +02:00
|
|
|
iff->bpp = st->codec->bits_per_coded_sample;
|
|
|
|
if ((screenmode & 0x800 /* Hold And Modify */) && iff->bpp <= 8) {
|
|
|
|
iff->ham = iff->bpp > 6 ? 6 : 4;
|
|
|
|
st->codec->bits_per_coded_sample = 24;
|
|
|
|
}
|
|
|
|
iff->flags = (screenmode & 0x80 /* Extra HalfBrite */) && iff->bpp <= 8;
|
|
|
|
iff->masking = masking;
|
|
|
|
iff->transparency = transparency;
|
|
|
|
|
|
|
|
if (!st->codec->extradata) {
|
|
|
|
st->codec->extradata_size = IFF_EXTRA_VIDEO_SIZE;
|
|
|
|
st->codec->extradata = av_malloc(IFF_EXTRA_VIDEO_SIZE + FF_INPUT_BUFFER_PADDING_SIZE);
|
|
|
|
if (!st->codec->extradata)
|
|
|
|
return AVERROR(ENOMEM);
|
|
|
|
}
|
|
|
|
buf = st->codec->extradata;
|
|
|
|
bytestream_put_be16(&buf, IFF_EXTRA_VIDEO_SIZE);
|
2011-05-10 15:33:36 +02:00
|
|
|
bytestream_put_byte(&buf, iff->bitmap_compression);
|
2011-04-20 13:56:56 +02:00
|
|
|
bytestream_put_byte(&buf, iff->bpp);
|
|
|
|
bytestream_put_byte(&buf, iff->ham);
|
|
|
|
bytestream_put_byte(&buf, iff->flags);
|
|
|
|
bytestream_put_be16(&buf, iff->transparency);
|
|
|
|
bytestream_put_byte(&buf, iff->masking);
|
2012-11-25 05:12:56 +01:00
|
|
|
bytestream_put_buffer(&buf, iff->tvdc, sizeof(iff->tvdc));
|
2012-11-22 10:42:37 +01:00
|
|
|
st->codec->codec_id = AV_CODEC_ID_IFF_ILBM;
|
2010-02-03 10:57:21 +01:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return -1;
|
|
|
|
}
|
2008-03-30 21:17:01 +02:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int iff_read_packet(AVFormatContext *s,
|
|
|
|
AVPacket *pkt)
|
|
|
|
{
|
|
|
|
IffDemuxContext *iff = s->priv_data;
|
2011-02-20 11:04:12 +01:00
|
|
|
AVIOContext *pb = s->pb;
|
2010-02-03 10:57:21 +01:00
|
|
|
AVStream *st = s->streams[0];
|
2008-03-30 21:17:01 +02:00
|
|
|
int ret;
|
|
|
|
|
2010-02-03 10:57:21 +01:00
|
|
|
if(iff->sent_bytes >= iff->body_size)
|
2011-09-07 21:28:07 +02:00
|
|
|
return AVERROR_EOF;
|
2008-05-09 13:25:27 +02:00
|
|
|
|
2011-05-15 13:24:46 +02:00
|
|
|
if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
|
2012-11-29 11:45:28 +01:00
|
|
|
if (st->codec->codec_tag == ID_MAUD) {
|
|
|
|
ret = av_get_packet(pb, pkt,
|
|
|
|
FFMIN(iff->body_size - iff->sent_bytes, 1024 * st->codec->block_align));
|
|
|
|
} else {
|
|
|
|
ret = av_get_packet(pb, pkt, iff->body_size);
|
|
|
|
}
|
2010-05-09 22:10:48 +02:00
|
|
|
} else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
|
2011-04-20 13:56:56 +02:00
|
|
|
uint8_t *buf;
|
|
|
|
|
|
|
|
if (av_new_packet(pkt, iff->body_size + 2) < 0) {
|
|
|
|
return AVERROR(ENOMEM);
|
|
|
|
}
|
|
|
|
|
|
|
|
buf = pkt->data;
|
|
|
|
bytestream_put_be16(&buf, 2);
|
|
|
|
ret = avio_read(pb, buf, iff->body_size);
|
2011-05-29 21:02:20 +02:00
|
|
|
} else {
|
2012-08-10 16:26:39 +02:00
|
|
|
av_assert0(0);
|
2008-05-09 13:25:27 +02:00
|
|
|
}
|
2008-03-30 21:17:01 +02:00
|
|
|
|
|
|
|
if(iff->sent_bytes == 0)
|
2010-03-31 14:29:58 +02:00
|
|
|
pkt->flags |= AV_PKT_FLAG_KEY;
|
2012-11-29 11:45:28 +01:00
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
|
|
|
iff->sent_bytes += ret;
|
2008-03-30 21:17:01 +02:00
|
|
|
pkt->stream_index = 0;
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2011-01-25 23:03:28 +01:00
|
|
|
AVInputFormat ff_iff_demuxer = {
|
2012-05-19 18:13:17 +02:00
|
|
|
.name = "iff",
|
2012-07-24 03:23:48 +02:00
|
|
|
.long_name = NULL_IF_CONFIG_SMALL("IFF (Interchange File Format)"),
|
2011-07-16 22:18:12 +02:00
|
|
|
.priv_data_size = sizeof(IffDemuxContext),
|
|
|
|
.read_probe = iff_probe,
|
|
|
|
.read_header = iff_read_header,
|
|
|
|
.read_packet = iff_read_packet,
|
2008-03-30 21:17:01 +02:00
|
|
|
};
|