forked from KolibriOS/kolibrios
143 lines
4.5 KiB
C
143 lines
4.5 KiB
C
/*
|
|
* Renderware TeXture Dictionary (.txd) image decoder
|
|
* Copyright (c) 2007 Ivo van Poorten
|
|
*
|
|
* See also: http://wiki.multimedia.cx/index.php?title=TXD
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "libavutil/intreadwrite.h"
|
|
#include "libavutil/imgutils.h"
|
|
#include "bytestream.h"
|
|
#include "avcodec.h"
|
|
#include "internal.h"
|
|
#include "s3tc.h"
|
|
|
|
static int txd_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
|
|
AVPacket *avpkt) {
|
|
GetByteContext gb;
|
|
AVFrame * const p = data;
|
|
unsigned int version, w, h, d3d_format, depth, stride, flags;
|
|
unsigned int y, v;
|
|
uint8_t *ptr;
|
|
uint32_t *pal;
|
|
int ret;
|
|
|
|
bytestream2_init(&gb, avpkt->data, avpkt->size);
|
|
version = bytestream2_get_le32(&gb);
|
|
bytestream2_skip(&gb, 72);
|
|
d3d_format = bytestream2_get_le32(&gb);
|
|
w = bytestream2_get_le16(&gb);
|
|
h = bytestream2_get_le16(&gb);
|
|
depth = bytestream2_get_byte(&gb);
|
|
bytestream2_skip(&gb, 2);
|
|
flags = bytestream2_get_byte(&gb);
|
|
|
|
if (version < 8 || version > 9) {
|
|
av_log(avctx, AV_LOG_ERROR, "texture data version %i is unsupported\n",
|
|
version);
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
|
|
if (depth == 8) {
|
|
avctx->pix_fmt = AV_PIX_FMT_PAL8;
|
|
} else if (depth == 16 || depth == 32) {
|
|
avctx->pix_fmt = AV_PIX_FMT_RGB32;
|
|
} else {
|
|
av_log(avctx, AV_LOG_ERROR, "depth of %i is unsupported\n", depth);
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
|
|
if ((ret = av_image_check_size(w, h, 0, avctx)) < 0)
|
|
return ret;
|
|
if (w != avctx->width || h != avctx->height)
|
|
avcodec_set_dimensions(avctx, w, h);
|
|
if ((ret = ff_get_buffer(avctx, p, 0)) < 0)
|
|
return ret;
|
|
|
|
p->pict_type = AV_PICTURE_TYPE_I;
|
|
|
|
ptr = p->data[0];
|
|
stride = p->linesize[0];
|
|
|
|
if (depth == 8) {
|
|
pal = (uint32_t *) p->data[1];
|
|
for (y = 0; y < 256; y++) {
|
|
v = bytestream2_get_be32(&gb);
|
|
pal[y] = (v >> 8) + (v << 24);
|
|
}
|
|
if (bytestream2_get_bytes_left(&gb) < w * h)
|
|
return AVERROR_INVALIDDATA;
|
|
bytestream2_skip(&gb, 4);
|
|
for (y=0; y<h; y++) {
|
|
bytestream2_get_buffer(&gb, ptr, w);
|
|
ptr += stride;
|
|
}
|
|
} else if (depth == 16) {
|
|
bytestream2_skip(&gb, 4);
|
|
switch (d3d_format) {
|
|
case 0:
|
|
if (!(flags & 1))
|
|
goto unsupported;
|
|
case FF_S3TC_DXT1:
|
|
if (bytestream2_get_bytes_left(&gb) < (w/4) * (h/4) * 8)
|
|
return AVERROR_INVALIDDATA;
|
|
ff_decode_dxt1(&gb, ptr, w, h, stride);
|
|
break;
|
|
case FF_S3TC_DXT3:
|
|
if (bytestream2_get_bytes_left(&gb) < (w/4) * (h/4) * 16)
|
|
return AVERROR_INVALIDDATA;
|
|
ff_decode_dxt3(&gb, ptr, w, h, stride);
|
|
break;
|
|
default:
|
|
goto unsupported;
|
|
}
|
|
} else if (depth == 32) {
|
|
switch (d3d_format) {
|
|
case 0x15:
|
|
case 0x16:
|
|
if (bytestream2_get_bytes_left(&gb) < h * w * 4)
|
|
return AVERROR_INVALIDDATA;
|
|
for (y=0; y<h; y++) {
|
|
bytestream2_get_buffer(&gb, ptr, w * 4);
|
|
ptr += stride;
|
|
}
|
|
break;
|
|
default:
|
|
goto unsupported;
|
|
}
|
|
}
|
|
|
|
*got_frame = 1;
|
|
|
|
return avpkt->size;
|
|
|
|
unsupported:
|
|
av_log(avctx, AV_LOG_ERROR, "unsupported d3d format (%08x)\n", d3d_format);
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
|
|
AVCodec ff_txd_decoder = {
|
|
.name = "txd",
|
|
.long_name = NULL_IF_CONFIG_SMALL("Renderware TXD (TeXture Dictionary) image"),
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.id = AV_CODEC_ID_TXD,
|
|
.decode = txd_decode_frame,
|
|
.capabilities = CODEC_CAP_DR1,
|
|
};
|