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"
29 #include "texturedsp.h"
31 #define TXD_DXT1 0x31545844
32 #define TXD_DXT3 0x33545844
34 static int txd_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
37 TextureDSPContext dxtc;
38 AVFrame * const p = data;
39 unsigned int version, w, h, d3d_format, depth, stride, flags;
46 ff_texturedsp_init(&dxtc);
48 bytestream2_init(&gb, avpkt->data, avpkt->size);
49 version = bytestream2_get_le32(&gb);
50 bytestream2_skip(&gb, 72);
51 d3d_format = bytestream2_get_le32(&gb);
52 w = bytestream2_get_le16(&gb);
53 h = bytestream2_get_le16(&gb);
54 depth = bytestream2_get_byte(&gb);
55 bytestream2_skip(&gb, 2);
56 flags = bytestream2_get_byte(&gb);
58 if (version < 8 || version > 9) {
59 avpriv_report_missing_feature(avctx, "Texture data version %u", version);
60 return AVERROR_PATCHWELCOME;
64 avctx->pix_fmt = AV_PIX_FMT_PAL8;
65 } else if (depth == 16 || depth == 32) {
66 avctx->pix_fmt = AV_PIX_FMT_RGBA;
68 avpriv_report_missing_feature(avctx, "Color depth of %u", depth);
69 return AVERROR_PATCHWELCOME;
72 if ((ret = ff_set_dimensions(avctx, w, h)) < 0)
75 avctx->coded_width = FFALIGN(w, 4);
76 avctx->coded_height = FFALIGN(h, 4);
78 if ((ret = ff_get_buffer(avctx, p, 0)) < 0)
81 p->pict_type = AV_PICTURE_TYPE_I;
84 stride = p->linesize[0];
87 pal = (uint32_t *) p->data[1];
88 for (y = 0; y < 256; y++) {
89 v = bytestream2_get_be32(&gb);
90 pal[y] = (v >> 8) + (v << 24);
92 if (bytestream2_get_bytes_left(&gb) < w * h)
93 return AVERROR_INVALIDDATA;
94 bytestream2_skip(&gb, 4);
96 bytestream2_get_buffer(&gb, ptr, w);
99 } else if (depth == 16) {
100 bytestream2_skip(&gb, 4);
101 switch (d3d_format) {
106 if (bytestream2_get_bytes_left(&gb) < AV_CEIL_RSHIFT(w, 2) * AV_CEIL_RSHIFT(h, 2) * 8)
107 return AVERROR_INVALIDDATA;
108 for (j = 0; j < avctx->height; j += 4) {
109 for (i = 0; i < avctx->width; i += 4) {
110 uint8_t *p = ptr + i * 4 + j * stride;
111 int step = dxtc.dxt1_block(p, stride, gb.buffer);
112 bytestream2_skip(&gb, step);
117 if (bytestream2_get_bytes_left(&gb) < AV_CEIL_RSHIFT(w, 2) * AV_CEIL_RSHIFT(h, 2) * 16)
118 return AVERROR_INVALIDDATA;
119 for (j = 0; j < avctx->height; j += 4) {
120 for (i = 0; i < avctx->width; i += 4) {
121 uint8_t *p = ptr + i * 4 + j * stride;
122 int step = dxtc.dxt3_block(p, stride, gb.buffer);
123 bytestream2_skip(&gb, step);
130 } else if (depth == 32) {
131 switch (d3d_format) {
134 if (bytestream2_get_bytes_left(&gb) < h * w * 4)
135 return AVERROR_INVALIDDATA;
136 for (y=0; y<h; y++) {
137 bytestream2_get_buffer(&gb, ptr, w * 4);
151 avpriv_report_missing_feature(avctx, "d3d format (%08x)", d3d_format);
152 return AVERROR_PATCHWELCOME;
155 AVCodec ff_txd_decoder = {
157 .long_name = NULL_IF_CONFIG_SMALL("Renderware TXD (TeXture Dictionary) image"),
158 .type = AVMEDIA_TYPE_VIDEO,
159 .id = AV_CODEC_ID_TXD,
160 .decode = txd_decode_frame,
161 .capabilities = AV_CODEC_CAP_DR1,