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"
30 typedef struct TXDContext {
34 static av_cold int txd_init(AVCodecContext *avctx) {
35 TXDContext *s = avctx->priv_data;
37 avcodec_get_frame_defaults(&s->picture);
38 avctx->coded_frame = &s->picture;
43 static int txd_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
45 TXDContext * const s = avctx->priv_data;
47 AVFrame *picture = data;
48 AVFrame * const p = &s->picture;
49 unsigned int version, w, h, d3d_format, depth, stride, flags;
54 bytestream2_init(&gb, avpkt->data, avpkt->size);
55 version = bytestream2_get_le32(&gb);
56 bytestream2_skip(&gb, 72);
57 d3d_format = bytestream2_get_le32(&gb);
58 w = bytestream2_get_le16(&gb);
59 h = bytestream2_get_le16(&gb);
60 depth = bytestream2_get_byte(&gb);
61 bytestream2_skip(&gb, 2);
62 flags = bytestream2_get_byte(&gb);
64 if (version < 8 || version > 9) {
65 av_log(avctx, AV_LOG_ERROR, "texture data version %i is unsupported\n",
71 avctx->pix_fmt = AV_PIX_FMT_PAL8;
72 } else if (depth == 16 || depth == 32) {
73 avctx->pix_fmt = AV_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 (av_image_check_size(w, h, 0, avctx))
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 = AV_PICTURE_TYPE_I;
94 stride = p->linesize[0];
97 pal = (uint32_t *) p->data[1];
98 for (y = 0; y < 256; y++) {
99 v = bytestream2_get_be32(&gb);
100 pal[y] = (v >> 8) + (v << 24);
102 if (bytestream2_get_bytes_left(&gb) < w * h)
103 return AVERROR_INVALIDDATA;
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 if (bytestream2_get_bytes_left(&gb) < (w/4) * (h/4) * 8)
117 return AVERROR_INVALIDDATA;
118 ff_decode_dxt1(&gb, ptr, w, h, stride);
121 if (bytestream2_get_bytes_left(&gb) < (w/4) * (h/4) * 16)
122 return AVERROR_INVALIDDATA;
123 ff_decode_dxt3(&gb, ptr, w, h, stride);
128 } else if (depth == 32) {
129 switch (d3d_format) {
132 if (bytestream2_get_bytes_left(&gb) < h * w * 4)
133 return AVERROR_INVALIDDATA;
134 for (y=0; y<h; y++) {
135 bytestream2_get_buffer(&gb, ptr, w * 4);
144 *picture = s->picture;
145 *data_size = sizeof(AVPicture);
150 av_log(avctx, AV_LOG_ERROR, "unsupported d3d format (%08x)\n", d3d_format);
154 static av_cold int txd_end(AVCodecContext *avctx) {
155 TXDContext *s = avctx->priv_data;
157 if (s->picture.data[0])
158 avctx->release_buffer(avctx, &s->picture);
163 AVCodec ff_txd_decoder = {
165 .type = AVMEDIA_TYPE_VIDEO,
166 .id = AV_CODEC_ID_TXD,
167 .priv_data_size = sizeof(TXDContext),
170 .decode = txd_decode_frame,
171 .capabilities = CODEC_CAP_DR1,
172 .long_name = NULL_IF_CONFIG_SMALL("Renderware TXD (TeXture Dictionary) image"),