2 * Renderware TeXture Dictionary (.txd) image decoder
3 * Copyright (c) 2007 Ivo van Poorten
5 * See also: http://wiki.multimedia.cx/index.php?title=TXD
7 * This file is part of FFmpeg.
9 * FFmpeg is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
14 * FFmpeg is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with FFmpeg; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 #include "libavutil/intreadwrite.h"
25 #include "libavutil/imgutils.h"
26 #include "bytestream.h"
31 static int txd_decode_frame(AVCodecContext
*avctx
, void *data
, int *got_frame
,
34 AVFrame
* const p
= data
;
35 unsigned int version
, w
, h
, d3d_format
, depth
, stride
, flags
;
41 bytestream2_init(&gb
, avpkt
->data
, avpkt
->size
);
42 version
= bytestream2_get_le32(&gb
);
43 bytestream2_skip(&gb
, 72);
44 d3d_format
= bytestream2_get_le32(&gb
);
45 w
= bytestream2_get_le16(&gb
);
46 h
= bytestream2_get_le16(&gb
);
47 depth
= bytestream2_get_byte(&gb
);
48 bytestream2_skip(&gb
, 2);
49 flags
= bytestream2_get_byte(&gb
);
51 if (version
< 8 || version
> 9) {
52 av_log(avctx
, AV_LOG_ERROR
, "texture data version %i is unsupported\n",
54 return AVERROR_PATCHWELCOME
;
58 avctx
->pix_fmt
= AV_PIX_FMT_PAL8
;
59 } else if (depth
== 16 || depth
== 32) {
60 avctx
->pix_fmt
= AV_PIX_FMT_RGB32
;
62 av_log(avctx
, AV_LOG_ERROR
, "depth of %i is unsupported\n", depth
);
63 return AVERROR_PATCHWELCOME
;
66 if ((ret
= ff_set_dimensions(avctx
, w
, h
)) < 0)
69 if ((ret
= ff_get_buffer(avctx
, p
, 0)) < 0)
72 p
->pict_type
= AV_PICTURE_TYPE_I
;
75 stride
= p
->linesize
[0];
78 pal
= (uint32_t *) p
->data
[1];
79 for (y
= 0; y
< 256; y
++) {
80 v
= bytestream2_get_be32(&gb
);
81 pal
[y
] = (v
>> 8) + (v
<< 24);
83 if (bytestream2_get_bytes_left(&gb
) < w
* h
)
84 return AVERROR_INVALIDDATA
;
85 bytestream2_skip(&gb
, 4);
87 bytestream2_get_buffer(&gb
, ptr
, w
);
90 } else if (depth
== 16) {
91 bytestream2_skip(&gb
, 4);
97 if (bytestream2_get_bytes_left(&gb
) < (w
/4) * (h
/4) * 8)
98 return AVERROR_INVALIDDATA
;
99 ff_decode_dxt1(&gb
, ptr
, w
, h
, stride
);
102 if (bytestream2_get_bytes_left(&gb
) < (w
/4) * (h
/4) * 16)
103 return AVERROR_INVALIDDATA
;
104 ff_decode_dxt3(&gb
, ptr
, w
, h
, stride
);
109 } else if (depth
== 32) {
110 switch (d3d_format
) {
113 if (bytestream2_get_bytes_left(&gb
) < h
* w
* 4)
114 return AVERROR_INVALIDDATA
;
115 for (y
=0; y
<h
; y
++) {
116 bytestream2_get_buffer(&gb
, ptr
, w
* 4);
130 av_log(avctx
, AV_LOG_ERROR
, "unsupported d3d format (%08x)\n", d3d_format
);
131 return AVERROR_PATCHWELCOME
;
134 AVCodec ff_txd_decoder
= {
136 .long_name
= NULL_IF_CONFIG_SMALL("Renderware TXD (TeXture Dictionary) image"),
137 .type
= AVMEDIA_TYPE_VIDEO
,
138 .id
= AV_CODEC_ID_TXD
,
139 .decode
= txd_decode_frame
,
140 .capabilities
= CODEC_CAP_DR1
,