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"
28 #include "codec_internal.h"
30 #include "texturedsp.h"
32 #define TXD_DXT1 0x31545844
33 #define TXD_DXT3 0x33545844
35 static int txd_decode_frame(AVCodecContext *avctx, AVFrame *p,
36 int *got_frame, AVPacket *avpkt)
39 TextureDSPContext dxtc;
40 unsigned int version, w, h, d3d_format, depth, stride, flags;
48 return AVERROR_INVALIDDATA;
50 ff_texturedsp_init(&dxtc);
52 bytestream2_init(&gb, avpkt->data, avpkt->size);
53 version = bytestream2_get_le32(&gb);
54 bytestream2_skip(&gb, 72);
55 d3d_format = bytestream2_get_le32(&gb);
56 w = bytestream2_get_le16(&gb);
57 h = bytestream2_get_le16(&gb);
58 depth = bytestream2_get_byte(&gb);
59 bytestream2_skip(&gb, 2);
60 flags = bytestream2_get_byte(&gb);
62 if (version < 8 || version > 9) {
63 avpriv_report_missing_feature(avctx, "Texture data version %u", version);
64 return AVERROR_PATCHWELCOME;
68 avctx->pix_fmt = AV_PIX_FMT_PAL8;
69 if (bytestream2_get_bytes_left(&gb) < w * h + 4 * 256)
70 return AVERROR_INVALIDDATA;
71 } else if (depth == 16) {
72 avctx->pix_fmt = AV_PIX_FMT_RGBA;
78 if (bytestream2_get_bytes_left(&gb) < AV_CEIL_RSHIFT(w, 2) * AV_CEIL_RSHIFT(h, 2) * 8 + 4)
79 return AVERROR_INVALIDDATA;
82 if (bytestream2_get_bytes_left(&gb) < AV_CEIL_RSHIFT(w, 2) * AV_CEIL_RSHIFT(h, 2) * 16 + 4)
83 return AVERROR_INVALIDDATA;
85 } else if (depth == 32) {
86 avctx->pix_fmt = AV_PIX_FMT_RGBA;
87 if (bytestream2_get_bytes_left(&gb) < h * w * 4)
88 return AVERROR_INVALIDDATA;
90 avpriv_report_missing_feature(avctx, "Color depth of %u", depth);
91 return AVERROR_PATCHWELCOME;
94 if ((ret = ff_set_dimensions(avctx, w, h)) < 0)
97 avctx->coded_width = FFALIGN(w, 4);
98 avctx->coded_height = FFALIGN(h, 4);
100 if ((ret = ff_get_buffer(avctx, p, 0)) < 0)
103 p->pict_type = AV_PICTURE_TYPE_I;
106 stride = p->linesize[0];
109 pal = (uint32_t *) p->data[1];
110 for (y = 0; y < 256; y++) {
111 v = bytestream2_get_be32(&gb);
112 pal[y] = (v >> 8) + (v << 24);
114 bytestream2_skip(&gb, 4);
115 for (y=0; y<h; y++) {
116 bytestream2_get_buffer(&gb, ptr, w);
119 } else if (depth == 16) {
120 bytestream2_skip(&gb, 4);
121 switch (d3d_format) {
124 for (j = 0; j < avctx->height; j += 4) {
125 for (i = 0; i < avctx->width; i += 4) {
126 uint8_t *p = ptr + i * 4 + j * stride;
127 int step = dxtc.dxt1_block(p, stride, gb.buffer);
128 bytestream2_skip(&gb, step);
133 for (j = 0; j < avctx->height; j += 4) {
134 for (i = 0; i < avctx->width; i += 4) {
135 uint8_t *p = ptr + i * 4 + j * stride;
136 int step = dxtc.dxt3_block(p, stride, gb.buffer);
137 bytestream2_skip(&gb, step);
144 } else if (depth == 32) {
145 switch (d3d_format) {
148 for (y=0; y<h; y++) {
149 bytestream2_get_buffer(&gb, ptr, w * 4);
163 avpriv_report_missing_feature(avctx, "d3d format (%08x)", d3d_format);
164 return AVERROR_PATCHWELCOME;
167 const FFCodec ff_txd_decoder = {
169 .p.long_name = NULL_IF_CONFIG_SMALL("Renderware TXD (TeXture Dictionary) image"),
170 .p.type = AVMEDIA_TYPE_VIDEO,
171 .p.id = AV_CODEC_ID_TXD,
172 .p.capabilities = AV_CODEC_CAP_DR1,
173 FF_CODEC_DECODE_CB(txd_decode_frame),