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 Libav.
9 * Libav 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 * Libav 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 Libav; 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"
27 #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 av_log(avctx, AV_LOG_ERROR, "texture data version %u is unsupported\n",
61 return AVERROR_PATCHWELCOME;
65 avctx->pix_fmt = AV_PIX_FMT_PAL8;
66 } else if (depth == 16 || depth == 32) {
67 avctx->pix_fmt = AV_PIX_FMT_RGBA;
69 av_log(avctx, AV_LOG_ERROR, "depth of %u is unsupported\n", depth);
70 return AVERROR_PATCHWELCOME;
73 if ((ret = ff_set_dimensions(avctx, w, h)) < 0)
76 avctx->coded_width = FFALIGN(w, 4);
77 avctx->coded_height = FFALIGN(h, 4);
79 if ((ret = ff_get_buffer(avctx, p, 0)) < 0) {
80 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
84 p->pict_type = AV_PICTURE_TYPE_I;
87 stride = p->linesize[0];
90 pal = (uint32_t *) p->data[1];
91 for (y = 0; y < 256; y++) {
92 v = bytestream2_get_be32(&gb);
93 pal[y] = (v >> 8) + (v << 24);
95 bytestream2_skip(&gb, 4);
97 bytestream2_get_buffer(&gb, ptr, w);
100 } else if (depth == 16) {
101 bytestream2_skip(&gb, 4);
102 switch (d3d_format) {
107 for (j = 0; j < avctx->height; j += 4) {
108 for (i = 0; i < avctx->width; i += 4) {
109 uint8_t *p = ptr + i * 4 + j * stride;
110 int step = dxtc.dxt1_block(p, stride, gb.buffer);
111 bytestream2_skip(&gb, step);
116 for (j = 0; j < avctx->height; j += 4) {
117 for (i = 0; i < avctx->width; i += 4) {
118 uint8_t *p = ptr + i * 4 + j * stride;
119 int step = dxtc.dxt3_block(p, stride, gb.buffer);
120 bytestream2_skip(&gb, step);
127 } else if (depth == 32) {
128 switch (d3d_format) {
131 for (y=0; y<h; y++) {
132 bytestream2_get_buffer(&gb, ptr, w * 4);
146 av_log(avctx, AV_LOG_ERROR, "unsupported d3d format (%08x)\n", d3d_format);
147 return AVERROR_PATCHWELCOME;
150 AVCodec ff_txd_decoder = {
152 .long_name = NULL_IF_CONFIG_SMALL("Renderware TXD (TeXture Dictionary) image"),
153 .type = AVMEDIA_TYPE_VIDEO,
154 .id = AV_CODEC_ID_TXD,
155 .decode = txd_decode_frame,
156 .capabilities = AV_CODEC_CAP_DR1,