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 "libavcore/imgutils.h"
29 typedef struct TXDContext {
33 static av_cold int txd_init(AVCodecContext *avctx) {
34 TXDContext *s = avctx->priv_data;
36 avcodec_get_frame_defaults(&s->picture);
37 avctx->coded_frame = &s->picture;
42 static int txd_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
44 const uint8_t *buf = avpkt->data;
45 TXDContext * const s = avctx->priv_data;
46 AVFrame *picture = data;
47 AVFrame * const p = &s->picture;
48 unsigned int version, w, h, d3d_format, depth, stride, mipmap_count, flags;
51 const uint8_t *cur = buf;
52 const uint32_t *palette = (const uint32_t *)(cur + 88);
55 version = AV_RL32(cur);
56 d3d_format = AV_RL32(cur+76);
59 depth = AV_RL8 (cur+84);
60 mipmap_count = AV_RL8 (cur+85);
61 flags = AV_RL8 (cur+87);
64 if (version < 8 || version > 9) {
65 av_log(avctx, AV_LOG_ERROR, "texture data version %i is unsupported\n",
71 avctx->pix_fmt = PIX_FMT_PAL8;
73 } else if (depth == 16 || depth == 32)
74 avctx->pix_fmt = PIX_FMT_RGB32;
76 av_log(avctx, AV_LOG_ERROR, "depth of %i is unsupported\n", depth);
81 avctx->release_buffer(avctx, p);
83 if (av_image_check_size(w, h, 0, avctx))
85 if (w != avctx->width || h != avctx->height)
86 avcodec_set_dimensions(avctx, w, h);
87 if (avctx->get_buffer(avctx, p) < 0) {
88 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
92 p->pict_type = FF_I_TYPE;
95 stride = p->linesize[0];
98 pal = (uint32_t *) p->data[1];
99 for (y=0; y<256; y++) {
100 v = AV_RB32(palette+y);
101 pal[y] = (v>>8) + (v<<24);
103 for (y=0; y<h; y++) {
108 } else if (depth == 16) {
109 switch (d3d_format) {
111 if (!flags&1) goto unsupported;
113 ff_decode_dxt1(cur, ptr, w, h, stride);
116 ff_decode_dxt3(cur, ptr, w, h, stride);
121 } else if (depth == 32) {
122 switch (d3d_format) {
125 for (y=0; y<h; y++) {
126 memcpy(ptr, cur, w*4);
136 for (; mipmap_count > 1; mipmap_count--)
137 cur += AV_RL32(cur) + 4;
139 *picture = s->picture;
140 *data_size = sizeof(AVPicture);
145 av_log(avctx, AV_LOG_ERROR, "unsupported d3d format (%08x)\n", d3d_format);
149 static av_cold int txd_end(AVCodecContext *avctx) {
150 TXDContext *s = avctx->priv_data;
152 if (s->picture.data[0])
153 avctx->release_buffer(avctx, &s->picture);
158 AVCodec txd_decoder = {
169 .long_name = NULL_IF_CONFIG_SMALL("Renderware TXD (TeXture Dictionary) image"),