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https://github.com/FFmpeg/FFmpeg.git
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48286d4d98
It reduces typing: Before this patch, there were 105 codecs whose long_name-definition exceeded the 80 char line length limit. Now there are only nine of them. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
173 lines
5.3 KiB
C
173 lines
5.3 KiB
C
/*
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* Renderware TeXture Dictionary (.txd) image decoder
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* Copyright (c) 2007 Ivo van Poorten
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*
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* See also: http://wiki.multimedia.cx/index.php?title=TXD
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "bytestream.h"
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#include "avcodec.h"
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#include "codec_internal.h"
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#include "decode.h"
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#include "texturedsp.h"
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#define TXD_DXT1 0x31545844
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#define TXD_DXT3 0x33545844
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static int txd_decode_frame(AVCodecContext *avctx, AVFrame *p,
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int *got_frame, AVPacket *avpkt)
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{
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GetByteContext gb;
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TextureDSPContext dxtc;
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unsigned int version, w, h, d3d_format, depth, stride, flags;
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unsigned int y, v;
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uint8_t *ptr;
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uint32_t *pal;
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int i, j;
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int ret;
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if (avpkt->size < 88)
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return AVERROR_INVALIDDATA;
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ff_texturedsp_init(&dxtc);
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bytestream2_init(&gb, avpkt->data, avpkt->size);
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version = bytestream2_get_le32(&gb);
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bytestream2_skip(&gb, 72);
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d3d_format = bytestream2_get_le32(&gb);
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w = bytestream2_get_le16(&gb);
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h = bytestream2_get_le16(&gb);
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depth = bytestream2_get_byte(&gb);
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bytestream2_skip(&gb, 2);
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flags = bytestream2_get_byte(&gb);
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if (version < 8 || version > 9) {
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avpriv_report_missing_feature(avctx, "Texture data version %u", version);
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return AVERROR_PATCHWELCOME;
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}
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if (depth == 8) {
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avctx->pix_fmt = AV_PIX_FMT_PAL8;
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if (bytestream2_get_bytes_left(&gb) < w * h + 4 * 256)
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return AVERROR_INVALIDDATA;
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} else if (depth == 16) {
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avctx->pix_fmt = AV_PIX_FMT_RGBA;
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switch (d3d_format) {
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case 0:
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if (!(flags & 1))
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goto unsupported;
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case TXD_DXT1:
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if (bytestream2_get_bytes_left(&gb) < AV_CEIL_RSHIFT(w, 2) * AV_CEIL_RSHIFT(h, 2) * 8 + 4)
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return AVERROR_INVALIDDATA;
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break;
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case TXD_DXT3:
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if (bytestream2_get_bytes_left(&gb) < AV_CEIL_RSHIFT(w, 2) * AV_CEIL_RSHIFT(h, 2) * 16 + 4)
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return AVERROR_INVALIDDATA;
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}
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} else if (depth == 32) {
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avctx->pix_fmt = AV_PIX_FMT_RGBA;
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if (bytestream2_get_bytes_left(&gb) < h * w * 4)
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return AVERROR_INVALIDDATA;
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} else {
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avpriv_report_missing_feature(avctx, "Color depth of %u", depth);
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return AVERROR_PATCHWELCOME;
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}
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if ((ret = ff_set_dimensions(avctx, w, h)) < 0)
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return ret;
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avctx->coded_width = FFALIGN(w, 4);
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avctx->coded_height = FFALIGN(h, 4);
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if ((ret = ff_get_buffer(avctx, p, 0)) < 0)
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return ret;
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p->pict_type = AV_PICTURE_TYPE_I;
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ptr = p->data[0];
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stride = p->linesize[0];
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if (depth == 8) {
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pal = (uint32_t *) p->data[1];
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for (y = 0; y < 256; y++) {
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v = bytestream2_get_be32(&gb);
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pal[y] = (v >> 8) + (v << 24);
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}
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bytestream2_skip(&gb, 4);
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for (y=0; y<h; y++) {
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bytestream2_get_buffer(&gb, ptr, w);
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ptr += stride;
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}
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} else if (depth == 16) {
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bytestream2_skip(&gb, 4);
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switch (d3d_format) {
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case 0:
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case TXD_DXT1:
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for (j = 0; j < avctx->height; j += 4) {
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for (i = 0; i < avctx->width; i += 4) {
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uint8_t *p = ptr + i * 4 + j * stride;
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int step = dxtc.dxt1_block(p, stride, gb.buffer);
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bytestream2_skip(&gb, step);
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}
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}
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break;
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case TXD_DXT3:
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for (j = 0; j < avctx->height; j += 4) {
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for (i = 0; i < avctx->width; i += 4) {
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uint8_t *p = ptr + i * 4 + j * stride;
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int step = dxtc.dxt3_block(p, stride, gb.buffer);
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bytestream2_skip(&gb, step);
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}
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}
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break;
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default:
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goto unsupported;
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}
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} else if (depth == 32) {
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switch (d3d_format) {
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case 0x15:
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case 0x16:
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for (y=0; y<h; y++) {
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bytestream2_get_buffer(&gb, ptr, w * 4);
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ptr += stride;
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}
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break;
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default:
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goto unsupported;
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}
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}
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*got_frame = 1;
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return avpkt->size;
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unsupported:
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avpriv_report_missing_feature(avctx, "d3d format (%08x)", d3d_format);
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return AVERROR_PATCHWELCOME;
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}
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const FFCodec ff_txd_decoder = {
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.p.name = "txd",
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CODEC_LONG_NAME("Renderware TXD (TeXture Dictionary) image"),
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.p.type = AVMEDIA_TYPE_VIDEO,
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.p.id = AV_CODEC_ID_TXD,
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.p.capabilities = AV_CODEC_CAP_DR1,
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FF_CODEC_DECODE_CB(txd_decode_frame),
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};
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