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"
28 typedef struct TXDContext {
32 static av_cold int txd_init(AVCodecContext *avctx) {
33 TXDContext *s = avctx->priv_data;
35 avcodec_get_frame_defaults(&s->picture);
36 avctx->coded_frame = &s->picture;
41 static int txd_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
43 const uint8_t *buf = avpkt->data;
44 TXDContext * const s = avctx->priv_data;
45 AVFrame *picture = data;
46 AVFrame * const p = &s->picture;
47 unsigned int version, w, h, d3d_format, depth, stride, mipmap_count, flags;
50 const uint8_t *cur = buf;
51 const uint32_t *palette = (const uint32_t *)(cur + 88);
54 version = AV_RL32(cur);
55 d3d_format = AV_RL32(cur+76);
58 depth = AV_RL8 (cur+84);
59 mipmap_count = AV_RL8 (cur+85);
60 flags = AV_RL8 (cur+87);
63 if (version < 8 || version > 9) {
64 av_log(avctx, AV_LOG_ERROR, "texture data version %i is unsupported\n",
70 avctx->pix_fmt = PIX_FMT_PAL8;
72 } else if (depth == 16 || depth == 32)
73 avctx->pix_fmt = PIX_FMT_RGB32;
75 av_log(avctx, AV_LOG_ERROR, "depth of %i is unsupported\n", depth);
80 avctx->release_buffer(avctx, p);
82 if (avcodec_check_dimensions(avctx, w, h))
84 if (w != avctx->width || h != avctx->height)
85 avcodec_set_dimensions(avctx, w, h);
86 if (avctx->get_buffer(avctx, p) < 0) {
87 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
91 p->pict_type = FF_I_TYPE;
94 stride = p->linesize[0];
97 pal = (uint32_t *) p->data[1];
98 for (y=0; y<256; y++) {
99 v = AV_RB32(palette+y);
100 pal[y] = (v>>8) + (v<<24);
102 for (y=0; y<h; y++) {
107 } else if (depth == 16) {
108 switch (d3d_format) {
110 if (!flags&1) goto unsupported;
112 ff_decode_dxt1(cur, ptr, w, h, stride);
115 ff_decode_dxt3(cur, ptr, w, h, stride);
120 } else if (depth == 32) {
121 switch (d3d_format) {
124 for (y=0; y<h; y++) {
125 memcpy(ptr, cur, w*4);
135 for (; mipmap_count > 1; mipmap_count--)
136 cur += AV_RL32(cur) + 4;
138 *picture = s->picture;
139 *data_size = sizeof(AVPicture);
144 av_log(avctx, AV_LOG_ERROR, "unsupported d3d format (%08x)\n", d3d_format);
148 static av_cold int txd_end(AVCodecContext *avctx) {
149 TXDContext *s = avctx->priv_data;
151 if (s->picture.data[0])
152 avctx->release_buffer(avctx, &s->picture);
157 AVCodec txd_decoder = {
168 .long_name = NULL_IF_CONFIG_SMALL("Renderware TXD (TeXture Dictionary) image"),