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,
42 const uint8_t *buf, int buf_size) {
43 TXDContext * const s = avctx->priv_data;
44 AVFrame *picture = data;
45 AVFrame * const p = &s->picture;
46 unsigned int version, w, h, d3d_format, depth, stride, mipmap_count, flags;
49 const uint8_t *cur = buf;
50 const uint32_t *palette = (const uint32_t *)(cur + 88);
53 version = AV_RL32(cur);
54 d3d_format = AV_RL32(cur+76);
57 depth = AV_RL8 (cur+84);
58 mipmap_count = AV_RL8 (cur+85);
59 flags = AV_RL8 (cur+87);
62 if (version < 8 || version > 9) {
63 av_log(avctx, AV_LOG_ERROR, "texture data version %i is unsupported\n",
69 avctx->pix_fmt = PIX_FMT_PAL8;
71 } else if (depth == 16 || depth == 32)
72 avctx->pix_fmt = PIX_FMT_RGB32;
74 av_log(avctx, AV_LOG_ERROR, "depth of %i is unsupported\n", depth);
79 avctx->release_buffer(avctx, p);
81 if (avcodec_check_dimensions(avctx, w, h))
83 if (w != avctx->width || h != avctx->height)
84 avcodec_set_dimensions(avctx, w, h);
85 if (avctx->get_buffer(avctx, p) < 0) {
86 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
90 p->pict_type = FF_I_TYPE;
93 stride = p->linesize[0];
96 pal = (uint32_t *) p->data[1];
97 for (y=0; y<256; y++) {
98 v = AV_RB32(palette+y);
99 pal[y] = (v>>8) + (v<<24);
101 for (y=0; y<h; y++) {
106 } else if (depth == 16) {
107 switch (d3d_format) {
109 if (!flags&1) goto unsupported;
111 ff_decode_dxt1(cur, ptr, w, h, stride);
114 ff_decode_dxt3(cur, ptr, w, h, stride);
119 } else if (depth == 32) {
120 switch (d3d_format) {
123 for (y=0; y<h; y++) {
124 memcpy(ptr, cur, w*4);
134 for (; mipmap_count > 1; mipmap_count--)
135 cur += AV_RL32(cur) + 4;
137 *picture = s->picture;
138 *data_size = sizeof(AVPicture);
143 av_log(avctx, AV_LOG_ERROR, "unsupported d3d format (%08x)\n", d3d_format);
147 static av_cold int txd_end(AVCodecContext *avctx) {
148 TXDContext *s = avctx->priv_data;
150 if (s->picture.data[0])
151 avctx->release_buffer(avctx, &s->picture);
156 AVCodec txd_decoder = {
167 .long_name = NULL_IF_CONFIG_SMALL("Renderware TXD (TeXture Dictionary) image"),