FFmpeg
txd.c
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1 /*
2  * Renderware TeXture Dictionary (.txd) image decoder
3  * Copyright (c) 2007 Ivo van Poorten
4  *
5  * See also: http://wiki.multimedia.cx/index.php?title=TXD
6  *
7  * This file is part of FFmpeg.
8  *
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.
13  *
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.
18  *
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
22  */
23 
24 #include "libavutil/intreadwrite.h"
25 #include "libavutil/imgutils.h"
26 #include "bytestream.h"
27 #include "avcodec.h"
28 #include "internal.h"
29 #include "texturedsp.h"
30 
31 #define TXD_DXT1 0x31545844
32 #define TXD_DXT3 0x33545844
33 
34 static int txd_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
35  AVPacket *avpkt) {
36  GetByteContext gb;
37  TextureDSPContext dxtc;
38  AVFrame * const p = data;
39  unsigned int version, w, h, d3d_format, depth, stride, flags;
40  unsigned int y, v;
41  uint8_t *ptr;
42  uint32_t *pal;
43  int i, j;
44  int ret;
45 
46  if (avpkt->size < 88)
47  return AVERROR_INVALIDDATA;
48 
49  ff_texturedsp_init(&dxtc);
50 
51  bytestream2_init(&gb, avpkt->data, avpkt->size);
52  version = bytestream2_get_le32(&gb);
53  bytestream2_skip(&gb, 72);
54  d3d_format = bytestream2_get_le32(&gb);
55  w = bytestream2_get_le16(&gb);
56  h = bytestream2_get_le16(&gb);
57  depth = bytestream2_get_byte(&gb);
58  bytestream2_skip(&gb, 2);
59  flags = bytestream2_get_byte(&gb);
60 
61  if (version < 8 || version > 9) {
62  avpriv_report_missing_feature(avctx, "Texture data version %u", version);
63  return AVERROR_PATCHWELCOME;
64  }
65 
66  if (depth == 8) {
67  avctx->pix_fmt = AV_PIX_FMT_PAL8;
68  } else if (depth == 16 || depth == 32) {
69  avctx->pix_fmt = AV_PIX_FMT_RGBA;
70  } else {
71  avpriv_report_missing_feature(avctx, "Color depth of %u", depth);
72  return AVERROR_PATCHWELCOME;
73  }
74 
75  if ((ret = ff_set_dimensions(avctx, w, h)) < 0)
76  return ret;
77 
78  avctx->coded_width = FFALIGN(w, 4);
79  avctx->coded_height = FFALIGN(h, 4);
80 
81  if ((ret = ff_get_buffer(avctx, p, 0)) < 0)
82  return ret;
83 
85 
86  ptr = p->data[0];
87  stride = p->linesize[0];
88 
89  if (depth == 8) {
90  pal = (uint32_t *) p->data[1];
91  for (y = 0; y < 256; y++) {
92  v = bytestream2_get_be32(&gb);
93  pal[y] = (v >> 8) + (v << 24);
94  }
95  if (bytestream2_get_bytes_left(&gb) < w * h)
96  return AVERROR_INVALIDDATA;
97  bytestream2_skip(&gb, 4);
98  for (y=0; y<h; y++) {
99  bytestream2_get_buffer(&gb, ptr, w);
100  ptr += stride;
101  }
102  } else if (depth == 16) {
103  bytestream2_skip(&gb, 4);
104  switch (d3d_format) {
105  case 0:
106  if (!(flags & 1))
107  goto unsupported;
108  case TXD_DXT1:
110  return AVERROR_INVALIDDATA;
111  for (j = 0; j < avctx->height; j += 4) {
112  for (i = 0; i < avctx->width; i += 4) {
113  uint8_t *p = ptr + i * 4 + j * stride;
114  int step = dxtc.dxt1_block(p, stride, gb.buffer);
115  bytestream2_skip(&gb, step);
116  }
117  }
118  break;
119  case TXD_DXT3:
120  if (bytestream2_get_bytes_left(&gb) < AV_CEIL_RSHIFT(w, 2) * AV_CEIL_RSHIFT(h, 2) * 16)
121  return AVERROR_INVALIDDATA;
122  for (j = 0; j < avctx->height; j += 4) {
123  for (i = 0; i < avctx->width; i += 4) {
124  uint8_t *p = ptr + i * 4 + j * stride;
125  int step = dxtc.dxt3_block(p, stride, gb.buffer);
126  bytestream2_skip(&gb, step);
127  }
128  }
129  break;
130  default:
131  goto unsupported;
132  }
133  } else if (depth == 32) {
134  switch (d3d_format) {
135  case 0x15:
136  case 0x16:
137  if (bytestream2_get_bytes_left(&gb) < h * w * 4)
138  return AVERROR_INVALIDDATA;
139  for (y=0; y<h; y++) {
140  bytestream2_get_buffer(&gb, ptr, w * 4);
141  ptr += stride;
142  }
143  break;
144  default:
145  goto unsupported;
146  }
147  }
148 
149  *got_frame = 1;
150 
151  return avpkt->size;
152 
154  avpriv_report_missing_feature(avctx, "d3d format (%08x)", d3d_format);
155  return AVERROR_PATCHWELCOME;
156 }
157 
159  .name = "txd",
160  .long_name = NULL_IF_CONFIG_SMALL("Renderware TXD (TeXture Dictionary) image"),
161  .type = AVMEDIA_TYPE_VIDEO,
162  .id = AV_CODEC_ID_TXD,
163  .decode = txd_decode_frame,
164  .capabilities = AV_CODEC_CAP_DR1,
165 };
AVCodec
AVCodec.
Definition: codec.h:197
stride
int stride
Definition: mace.c:144
TextureDSPContext::dxt1_block
int(* dxt1_block)(uint8_t *dst, ptrdiff_t stride, const uint8_t *block)
Definition: texturedsp.h:46
GetByteContext
Definition: bytestream.h:33
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:303
AV_CODEC_ID_TXD
@ AV_CODEC_ID_TXD
Definition: codec_id.h:155
step
trying all byte sequences megabyte in length and selecting the best looking sequence will yield cases to try But a word about which is also called distortion Distortion can be quantified by almost any quality measurement one chooses the sum of squared differences is used but more complex methods that consider psychovisual effects can be used as well It makes no difference in this discussion First step
Definition: rate_distortion.txt:58
w
uint8_t w
Definition: llviddspenc.c:38
internal.h
AVPacket::data
uint8_t * data
Definition: packet.h:373
data
const char data[16]
Definition: mxf.c:143
TXD_DXT3
#define TXD_DXT3
Definition: txd.c:32
TextureDSPContext
Definition: texturedsp.h:45
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:317
bytestream2_skip
static av_always_inline void bytestream2_skip(GetByteContext *g, unsigned int size)
Definition: bytestream.h:168
texturedsp.h
d3d_format
DXGI_FORMAT d3d_format
Definition: hwcontext_d3d11va.c:83
TXD_DXT1
#define TXD_DXT1
Definition: txd.c:31
AVCodecContext::coded_height
int coded_height
Definition: avcodec.h:567
ff_txd_decoder
const AVCodec ff_txd_decoder
Definition: txd.c:158
intreadwrite.h
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:51
GetByteContext::buffer
const uint8_t * buffer
Definition: bytestream.h:34
txd_decode_frame
static int txd_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: txd.c:34
ff_texturedsp_init
av_cold void ff_texturedsp_init(TextureDSPContext *c)
Definition: texturedsp.c:637
AV_PIX_FMT_RGBA
@ AV_PIX_FMT_RGBA
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:93
AVERROR_PATCHWELCOME
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:64
AV_PICTURE_TYPE_I
@ AV_PICTURE_TYPE_I
Intra.
Definition: avutil.h:274
bytestream2_get_buffer
static av_always_inline unsigned int bytestream2_get_buffer(GetByteContext *g, uint8_t *dst, unsigned int size)
Definition: bytestream.h:267
bytestream2_get_bytes_left
static av_always_inline int bytestream2_get_bytes_left(GetByteContext *g)
Definition: bytestream.h:158
for
for(j=16;j >0;--j)
Definition: h264pred_template.c:469
AVFrame::pict_type
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:386
ff_get_buffer
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: decode.c:1648
AV_CODEC_CAP_DR1
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:52
AVPacket::size
int size
Definition: packet.h:374
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:116
avpriv_report_missing_feature
void avpriv_report_missing_feature(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
version
version
Definition: libkvazaar.c:307
i
int i
Definition: input.c:406
AVCodec::name
const char * name
Name of the codec implementation.
Definition: codec.h:204
AVCodecContext::height
int height
Definition: avcodec.h:552
AVCodecContext::pix_fmt
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:589
avcodec.h
AV_PIX_FMT_PAL8
@ AV_PIX_FMT_PAL8
8 bits with AV_PIX_FMT_RGB32 palette
Definition: pixfmt.h:77
ret
ret
Definition: filter_design.txt:187
AVCodecContext
main external API structure.
Definition: avcodec.h:379
TextureDSPContext::dxt3_block
int(* dxt3_block)(uint8_t *dst, ptrdiff_t stride, const uint8_t *block)
Definition: texturedsp.h:49
AVCodecContext::coded_width
int coded_width
Bitstream width / height, may be different from width/height e.g.
Definition: avcodec.h:567
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
ff_set_dimensions
int ff_set_dimensions(AVCodecContext *s, int width, int height)
Check that the provided frame dimensions are valid and set them on the codec context.
Definition: utils.c:86
unsupported
static int unsupported(AVCodecContext *avctx)
Definition: iff.c:1515
FFALIGN
#define FFALIGN(x, a)
Definition: macros.h:78
AVPacket
This structure stores compressed data.
Definition: packet.h:350
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:552
bytestream.h
imgutils.h
bytestream2_init
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
Definition: bytestream.h:137
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:334
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:61
h
h
Definition: vp9dsp_template.c:2038