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"
31 typedef struct TXDContext {
35 static av_cold int txd_init(AVCodecContext *avctx) {
36 TXDContext *s = avctx->priv_data;
38 avcodec_get_frame_defaults(&s->picture);
39 avctx->coded_frame = &s->picture;
44 static int txd_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
46 TXDContext * const s = avctx->priv_data;
48 AVFrame *picture = data;
49 AVFrame * const p = &s->picture;
50 unsigned int version, w, h, d3d_format, depth, stride, flags;
56 bytestream2_init(&gb, avpkt->data, avpkt->size);
57 version = bytestream2_get_le32(&gb);
58 bytestream2_skip(&gb, 72);
59 d3d_format = bytestream2_get_le32(&gb);
60 w = bytestream2_get_le16(&gb);
61 h = bytestream2_get_le16(&gb);
62 depth = bytestream2_get_byte(&gb);
63 bytestream2_skip(&gb, 2);
64 flags = bytestream2_get_byte(&gb);
66 if (version < 8 || version > 9) {
67 av_log(avctx, AV_LOG_ERROR, "texture data version %i is unsupported\n",
69 return AVERROR_PATCHWELCOME;
73 avctx->pix_fmt = AV_PIX_FMT_PAL8;
74 } else if (depth == 16 || depth == 32) {
75 avctx->pix_fmt = AV_PIX_FMT_RGB32;
77 av_log(avctx, AV_LOG_ERROR, "depth of %i is unsupported\n", depth);
78 return AVERROR_PATCHWELCOME;
82 avctx->release_buffer(avctx, p);
84 if ((ret = av_image_check_size(w, h, 0, avctx)) < 0)
86 if (w != avctx->width || h != avctx->height)
87 avcodec_set_dimensions(avctx, w, h);
88 if ((ret = ff_get_buffer(avctx, p)) < 0) {
89 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
93 p->pict_type = AV_PICTURE_TYPE_I;
96 stride = p->linesize[0];
99 pal = (uint32_t *) p->data[1];
100 for (y = 0; y < 256; y++) {
101 v = bytestream2_get_be32(&gb);
102 pal[y] = (v >> 8) + (v << 24);
104 bytestream2_skip(&gb, 4);
105 for (y=0; y<h; y++) {
106 bytestream2_get_buffer(&gb, ptr, w);
109 } else if (depth == 16) {
110 bytestream2_skip(&gb, 4);
111 switch (d3d_format) {
116 ff_decode_dxt1(&gb, ptr, w, h, stride);
119 ff_decode_dxt3(&gb, ptr, w, h, stride);
124 } else if (depth == 32) {
125 switch (d3d_format) {
128 for (y=0; y<h; y++) {
129 bytestream2_get_buffer(&gb, ptr, w * 4);
138 *picture = s->picture;
144 av_log(avctx, AV_LOG_ERROR, "unsupported d3d format (%08x)\n", d3d_format);
145 return AVERROR_PATCHWELCOME;
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 ff_txd_decoder = {
159 .type = AVMEDIA_TYPE_VIDEO,
160 .id = AV_CODEC_ID_TXD,
161 .priv_data_size = sizeof(TXDContext),
164 .decode = txd_decode_frame,
165 .capabilities = CODEC_CAP_DR1,
166 .long_name = NULL_IF_CONFIG_SMALL("Renderware TXD (TeXture Dictionary) image"),