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 = av_image_check_size(w, h, 0, avctx)) < 0)
68 if (w != avctx->width || h != avctx->height)
69 avcodec_set_dimensions(avctx, w, h);
70 if ((ret = ff_get_buffer(avctx, p, 0)) < 0)
73 p->pict_type = AV_PICTURE_TYPE_I;
76 stride = p->linesize[0];
79 pal = (uint32_t *) p->data[1];
80 for (y = 0; y < 256; y++) {
81 v = bytestream2_get_be32(&gb);
82 pal[y] = (v >> 8) + (v << 24);
84 if (bytestream2_get_bytes_left(&gb) < w * h)
85 return AVERROR_INVALIDDATA;
86 bytestream2_skip(&gb, 4);
88 bytestream2_get_buffer(&gb, ptr, w);
91 } else if (depth == 16) {
92 bytestream2_skip(&gb, 4);
98 if (bytestream2_get_bytes_left(&gb) < (w/4) * (h/4) * 8)
99 return AVERROR_INVALIDDATA;
100 ff_decode_dxt1(&gb, ptr, w, h, stride);
103 if (bytestream2_get_bytes_left(&gb) < (w/4) * (h/4) * 16)
104 return AVERROR_INVALIDDATA;
105 ff_decode_dxt3(&gb, ptr, w, h, stride);
110 } else if (depth == 32) {
111 switch (d3d_format) {
114 if (bytestream2_get_bytes_left(&gb) < h * w * 4)
115 return AVERROR_INVALIDDATA;
116 for (y=0; y<h; y++) {
117 bytestream2_get_buffer(&gb, ptr, w * 4);
131 av_log(avctx, AV_LOG_ERROR, "unsupported d3d format (%08x)\n", d3d_format);
132 return AVERROR_PATCHWELCOME;
135 AVCodec ff_txd_decoder = {
137 .type = AVMEDIA_TYPE_VIDEO,
138 .id = AV_CODEC_ID_TXD,
139 .decode = txd_decode_frame,
140 .capabilities = CODEC_CAP_DR1,
141 .long_name = NULL_IF_CONFIG_SMALL("Renderware TXD (TeXture Dictionary) image"),