1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
/*
* Renderware TeXture Dictionary (.txd) image decoder
* Copyright (c) 2007 Ivo van Poorten
*
* See also: http://wiki.multimedia.cx/index.php?title=TXD
*
* 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 "bytestream.h"
#include "avcodec.h"
#include "codec_internal.h"
#include "decode.h"
#include "texturedsp.h"
#define TXD_DXT1 0x31545844
#define TXD_DXT3 0x33545844
static int txd_decode_frame(AVCodecContext *avctx, AVFrame *p,
int *got_frame, AVPacket *avpkt)
{
GetByteContext gb;
TextureDSPContext dxtc;
unsigned int version, w, h, d3d_format, depth, stride, flags;
unsigned int y, v;
uint8_t *ptr;
uint32_t *pal;
int i, j;
int ret;
if (avpkt->size < 88)
return AVERROR_INVALIDDATA;
ff_texturedsp_init(&dxtc);
bytestream2_init(&gb, avpkt->data, avpkt->size);
version = bytestream2_get_le32(&gb);
bytestream2_skip(&gb, 72);
d3d_format = bytestream2_get_le32(&gb);
w = bytestream2_get_le16(&gb);
h = bytestream2_get_le16(&gb);
depth = bytestream2_get_byte(&gb);
bytestream2_skip(&gb, 2);
flags = bytestream2_get_byte(&gb);
if (version < 8 || version > 9) {
avpriv_report_missing_feature(avctx, "Texture data version %u", version);
return AVERROR_PATCHWELCOME;
}
if (depth == 8) {
avctx->pix_fmt = AV_PIX_FMT_PAL8;
if (bytestream2_get_bytes_left(&gb) < w * h + 4 * 256)
return AVERROR_INVALIDDATA;
} else if (depth == 16) {
avctx->pix_fmt = AV_PIX_FMT_RGBA;
switch (d3d_format) {
case 0:
if (!(flags & 1))
goto unsupported;
case TXD_DXT1:
if (bytestream2_get_bytes_left(&gb) < AV_CEIL_RSHIFT(w, 2) * AV_CEIL_RSHIFT(h, 2) * 8 + 4)
return AVERROR_INVALIDDATA;
break;
case TXD_DXT3:
if (bytestream2_get_bytes_left(&gb) < AV_CEIL_RSHIFT(w, 2) * AV_CEIL_RSHIFT(h, 2) * 16 + 4)
return AVERROR_INVALIDDATA;
}
} else if (depth == 32) {
avctx->pix_fmt = AV_PIX_FMT_RGBA;
if (bytestream2_get_bytes_left(&gb) < h * w * 4)
return AVERROR_INVALIDDATA;
} else {
avpriv_report_missing_feature(avctx, "Color depth of %u", depth);
return AVERROR_PATCHWELCOME;
}
if ((ret = ff_set_dimensions(avctx, w, h)) < 0)
return ret;
avctx->coded_width = FFALIGN(w, 4);
avctx->coded_height = FFALIGN(h, 4);
if ((ret = ff_get_buffer(avctx, p, 0)) < 0)
return ret;
p->pict_type = AV_PICTURE_TYPE_I;
ptr = p->data[0];
stride = p->linesize[0];
if (depth == 8) {
pal = (uint32_t *) p->data[1];
for (y = 0; y < 256; y++) {
v = bytestream2_get_be32(&gb);
pal[y] = (v >> 8) + (v << 24);
}
bytestream2_skip(&gb, 4);
for (y=0; y<h; y++) {
bytestream2_get_buffer(&gb, ptr, w);
ptr += stride;
}
} else if (depth == 16) {
bytestream2_skip(&gb, 4);
switch (d3d_format) {
case 0:
case TXD_DXT1:
for (j = 0; j < avctx->height; j += 4) {
for (i = 0; i < avctx->width; i += 4) {
uint8_t *p = ptr + i * 4 + j * stride;
int step = dxtc.dxt1_block(p, stride, gb.buffer);
bytestream2_skip(&gb, step);
}
}
break;
case TXD_DXT3:
for (j = 0; j < avctx->height; j += 4) {
for (i = 0; i < avctx->width; i += 4) {
uint8_t *p = ptr + i * 4 + j * stride;
int step = dxtc.dxt3_block(p, stride, gb.buffer);
bytestream2_skip(&gb, step);
}
}
break;
default:
goto unsupported;
}
} else if (depth == 32) {
switch (d3d_format) {
case 0x15:
case 0x16:
for (y=0; y<h; y++) {
bytestream2_get_buffer(&gb, ptr, w * 4);
ptr += stride;
}
break;
default:
goto unsupported;
}
}
*got_frame = 1;
return avpkt->size;
unsupported:
avpriv_report_missing_feature(avctx, "d3d format (%08x)", d3d_format);
return AVERROR_PATCHWELCOME;
}
const FFCodec ff_txd_decoder = {
.p.name = "txd",
CODEC_LONG_NAME("Renderware TXD (TeXture Dictionary) image"),
.p.type = AVMEDIA_TYPE_VIDEO,
.p.id = AV_CODEC_ID_TXD,
.p.capabilities = AV_CODEC_CAP_DR1,
FF_CODEC_DECODE_CB(txd_decode_frame),
};
|
