FFmpeg
dds.c
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1 /*
2  * DirectDraw Surface image decoder
3  * Copyright (C) 2015 Vittorio Giovara <vittorio.giovara@gmail.com>
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 /**
23  * @file
24  * DDS decoder
25  *
26  * https://msdn.microsoft.com/en-us/library/bb943982%28v=vs.85%29.aspx
27  */
28 
29 #include <stdint.h>
30 
31 #include "libavutil/libm.h"
32 #include "libavutil/imgutils.h"
33 
34 #include "avcodec.h"
35 #include "bytestream.h"
36 #include "codec_internal.h"
37 #include "decode.h"
38 #include "texturedsp.h"
39 
40 #define DDPF_FOURCC (1 << 2)
41 #define DDPF_PALETTE (1 << 5)
42 #define DDPF_NORMALMAP (1U << 31)
43 
44 enum DDSPostProc {
45  DDS_NONE = 0,
46  DDS_ALPHA_EXP,
47  DDS_NORMAL_MAP,
48  DDS_RAW_YCOCG,
49  DDS_SWAP_ALPHA,
50  DDS_SWIZZLE_A2XY,
51  DDS_SWIZZLE_RBXG,
52  DDS_SWIZZLE_RGXB,
53  DDS_SWIZZLE_RXBG,
54  DDS_SWIZZLE_RXGB,
55  DDS_SWIZZLE_XGBR,
56  DDS_SWIZZLE_XRBG,
57  DDS_SWIZZLE_XGXR,
58 };
59 
60 enum DDSDXGIFormat {
61  DXGI_FORMAT_R16G16B16A16_TYPELESS = 9,
62  DXGI_FORMAT_R16G16B16A16_FLOAT = 10,
63  DXGI_FORMAT_R16G16B16A16_UNORM = 11,
64  DXGI_FORMAT_R16G16B16A16_UINT = 12,
65  DXGI_FORMAT_R16G16B16A16_SNORM = 13,
66  DXGI_FORMAT_R16G16B16A16_SINT = 14,
67 
68  DXGI_FORMAT_R8G8B8A8_TYPELESS = 27,
69  DXGI_FORMAT_R8G8B8A8_UNORM = 28,
70  DXGI_FORMAT_R8G8B8A8_UNORM_SRGB = 29,
71  DXGI_FORMAT_R8G8B8A8_UINT = 30,
72  DXGI_FORMAT_R8G8B8A8_SNORM = 31,
73  DXGI_FORMAT_R8G8B8A8_SINT = 32,
74 
75  DXGI_FORMAT_BC1_TYPELESS = 70,
76  DXGI_FORMAT_BC1_UNORM = 71,
77  DXGI_FORMAT_BC1_UNORM_SRGB = 72,
78  DXGI_FORMAT_BC2_TYPELESS = 73,
79  DXGI_FORMAT_BC2_UNORM = 74,
80  DXGI_FORMAT_BC2_UNORM_SRGB = 75,
81  DXGI_FORMAT_BC3_TYPELESS = 76,
82  DXGI_FORMAT_BC3_UNORM = 77,
83  DXGI_FORMAT_BC3_UNORM_SRGB = 78,
84  DXGI_FORMAT_BC4_TYPELESS = 79,
85  DXGI_FORMAT_BC4_UNORM = 80,
86  DXGI_FORMAT_BC4_SNORM = 81,
87  DXGI_FORMAT_BC5_TYPELESS = 82,
88  DXGI_FORMAT_BC5_UNORM = 83,
89  DXGI_FORMAT_BC5_SNORM = 84,
90  DXGI_FORMAT_B5G6R5_UNORM = 85,
91  DXGI_FORMAT_B8G8R8A8_UNORM = 87,
92  DXGI_FORMAT_B8G8R8X8_UNORM = 88,
93  DXGI_FORMAT_B8G8R8A8_TYPELESS = 90,
94  DXGI_FORMAT_B8G8R8A8_UNORM_SRGB = 91,
95  DXGI_FORMAT_B8G8R8X8_TYPELESS = 92,
96  DXGI_FORMAT_B8G8R8X8_UNORM_SRGB = 93,
97 };
98 
99 typedef struct DDSContext {
100  TextureDSPContext texdsp;
101  GetByteContext gbc;
102 
103  int compressed;
104  int paletted;
105  int bpp;
106  enum DDSPostProc postproc;
107 
108  TextureDSPThreadContext dec;
109 } DDSContext;
110 
111 static int parse_pixel_format(AVCodecContext *avctx)
112 {
113  DDSContext *ctx = avctx->priv_data;
114  GetByteContext *gbc = &ctx->gbc;
115  uint32_t flags, fourcc, gimp_tag;
116  enum DDSDXGIFormat dxgi;
117  int size, bpp, r, g, b, a;
118  int alpha_exponent, ycocg_classic, ycocg_scaled, normal_map, array;
119 
120  /* Alternative DDS implementations use reserved1 as custom header. */
121  bytestream2_skip(gbc, 4 * 3);
122  gimp_tag = bytestream2_get_le32(gbc);
123  alpha_exponent = gimp_tag == MKTAG('A', 'E', 'X', 'P');
124  ycocg_classic = gimp_tag == MKTAG('Y', 'C', 'G', '1');
125  ycocg_scaled = gimp_tag == MKTAG('Y', 'C', 'G', '2');
126  bytestream2_skip(gbc, 4 * 7);
127 
128  /* Now the real DDPF starts. */
129  size = bytestream2_get_le32(gbc);
130  if (size != 32) {
131  av_log(avctx, AV_LOG_ERROR, "Invalid pixel format header %d.\n", size);
132  return AVERROR_INVALIDDATA;
133  }
134  flags = bytestream2_get_le32(gbc);
135  ctx->compressed = flags & DDPF_FOURCC;
136  ctx->paletted = flags & DDPF_PALETTE;
137  normal_map = flags & DDPF_NORMALMAP;
138  fourcc = bytestream2_get_le32(gbc);
139 
140  if (ctx->compressed && ctx->paletted) {
141  av_log(avctx, AV_LOG_WARNING,
142  "Disabling invalid palette flag for compressed dds.\n");
143  ctx->paletted = 0;
144  }
145 
146  bpp = ctx->bpp = bytestream2_get_le32(gbc); // rgbbitcount
147  r = bytestream2_get_le32(gbc); // rbitmask
148  g = bytestream2_get_le32(gbc); // gbitmask
149  b = bytestream2_get_le32(gbc); // bbitmask
150  a = bytestream2_get_le32(gbc); // abitmask
151 
152  bytestream2_skip(gbc, 4); // caps
153  bytestream2_skip(gbc, 4); // caps2
154  bytestream2_skip(gbc, 4); // caps3
155  bytestream2_skip(gbc, 4); // caps4
156  bytestream2_skip(gbc, 4); // reserved2
157 
158  av_log(avctx, AV_LOG_VERBOSE, "fourcc %s bpp %d "
159  "r 0x%x g 0x%x b 0x%x a 0x%x\n", av_fourcc2str(fourcc), bpp, r, g, b, a);
160  if (gimp_tag)
161  av_log(avctx, AV_LOG_VERBOSE, "and GIMP-DDS tag %s\n", av_fourcc2str(gimp_tag));
162 
163  if (ctx->compressed)
164  avctx->pix_fmt = AV_PIX_FMT_RGBA;
165 
166  if (ctx->compressed) {
167  ctx->dec.raw_ratio = 16;
168  switch (fourcc) {
169  case MKTAG('D', 'X', 'T', '1'):
170  ctx->dec.tex_ratio = 8;
171  ctx->dec.tex_funct = ctx->texdsp.dxt1a_block;
172  break;
173  case MKTAG('D', 'X', 'T', '2'):
174  ctx->dec.tex_ratio = 16;
175  ctx->dec.tex_funct = ctx->texdsp.dxt2_block;
176  break;
177  case MKTAG('D', 'X', 'T', '3'):
178  ctx->dec.tex_ratio = 16;
179  ctx->dec.tex_funct = ctx->texdsp.dxt3_block;
180  break;
181  case MKTAG('D', 'X', 'T', '4'):
182  ctx->dec.tex_ratio = 16;
183  ctx->dec.tex_funct = ctx->texdsp.dxt4_block;
184  break;
185  case MKTAG('D', 'X', 'T', '5'):
186  ctx->dec.tex_ratio = 16;
187  if (ycocg_scaled)
188  ctx->dec.tex_funct = ctx->texdsp.dxt5ys_block;
189  else if (ycocg_classic)
190  ctx->dec.tex_funct = ctx->texdsp.dxt5y_block;
191  else
192  ctx->dec.tex_funct = ctx->texdsp.dxt5_block;
193  break;
194  case MKTAG('R', 'X', 'G', 'B'):
195  ctx->dec.tex_ratio = 16;
196  ctx->dec.tex_funct = ctx->texdsp.dxt5_block;
197  /* This format may be considered as a normal map,
198  * but it is handled differently in a separate postproc. */
199  ctx->postproc = DDS_SWIZZLE_RXGB;
200  normal_map = 0;
201  break;
202  case MKTAG('A', 'T', 'I', '1'):
203  case MKTAG('B', 'C', '4', 'U'):
204  ctx->dec.tex_ratio = 8;
205  ctx->dec.tex_funct = ctx->texdsp.rgtc1u_block;
206  break;
207  case MKTAG('B', 'C', '4', 'S'):
208  ctx->dec.tex_ratio = 8;
209  ctx->dec.tex_funct = ctx->texdsp.rgtc1s_block;
210  break;
211  case MKTAG('A', 'T', 'I', '2'):
212  /* RGT2 variant with swapped R and G (3Dc)*/
213  ctx->dec.tex_ratio = 16;
214  ctx->dec.tex_funct = ctx->texdsp.dxn3dc_block;
215  break;
216  case MKTAG('B', 'C', '5', 'U'):
217  ctx->dec.tex_ratio = 16;
218  ctx->dec.tex_funct = ctx->texdsp.rgtc2u_block;
219  break;
220  case MKTAG('B', 'C', '5', 'S'):
221  ctx->dec.tex_ratio = 16;
222  ctx->dec.tex_funct = ctx->texdsp.rgtc2s_block;
223  break;
224  case MKTAG('U', 'Y', 'V', 'Y'):
225  ctx->compressed = 0;
226  avctx->pix_fmt = AV_PIX_FMT_UYVY422;
227  break;
228  case MKTAG('Y', 'U', 'Y', '2'):
229  ctx->compressed = 0;
230  avctx->pix_fmt = AV_PIX_FMT_YUYV422;
231  break;
232  case MKTAG('P', '8', ' ', ' '):
233  /* ATI Palette8, same as normal palette */
234  ctx->compressed = 0;
235  ctx->paletted = 1;
236  avctx->pix_fmt = AV_PIX_FMT_PAL8;
237  break;
238  case MKTAG('G', '1', ' ', ' '):
239  ctx->compressed = 0;
240  avctx->pix_fmt = AV_PIX_FMT_MONOBLACK;
241  break;
242  case MKTAG('D', 'X', '1', '0'):
243  /* DirectX 10 extra header */
244  dxgi = bytestream2_get_le32(gbc);
245  bytestream2_skip(gbc, 4); // resourceDimension
246  bytestream2_skip(gbc, 4); // miscFlag
247  array = bytestream2_get_le32(gbc);
248  bytestream2_skip(gbc, 4); // miscFlag2
249 
250  if (array != 0)
251  av_log(avctx, AV_LOG_VERBOSE,
252  "Found array of size %d (ignored).\n", array);
253 
254  /* Only BC[1-5] are actually compressed. */
255  ctx->compressed = (dxgi >= 70) && (dxgi <= 84);
256 
257  av_log(avctx, AV_LOG_VERBOSE, "DXGI format %d.\n", dxgi);
258  switch (dxgi) {
259  /* RGB types. */
260  case DXGI_FORMAT_R16G16B16A16_TYPELESS:
261  case DXGI_FORMAT_R16G16B16A16_FLOAT:
262  case DXGI_FORMAT_R16G16B16A16_UNORM:
263  case DXGI_FORMAT_R16G16B16A16_UINT:
264  case DXGI_FORMAT_R16G16B16A16_SNORM:
265  case DXGI_FORMAT_R16G16B16A16_SINT:
266  avctx->pix_fmt = AV_PIX_FMT_BGRA64;
267  break;
268  case DXGI_FORMAT_R8G8B8A8_UNORM_SRGB:
269  avctx->colorspace = AVCOL_SPC_RGB;
270  case DXGI_FORMAT_R8G8B8A8_TYPELESS:
271  case DXGI_FORMAT_R8G8B8A8_UNORM:
272  case DXGI_FORMAT_R8G8B8A8_UINT:
273  case DXGI_FORMAT_R8G8B8A8_SNORM:
274  case DXGI_FORMAT_R8G8B8A8_SINT:
275  avctx->pix_fmt = AV_PIX_FMT_BGRA;
276  break;
277  case DXGI_FORMAT_B8G8R8A8_UNORM_SRGB:
278  avctx->colorspace = AVCOL_SPC_RGB;
279  case DXGI_FORMAT_B8G8R8A8_TYPELESS:
280  case DXGI_FORMAT_B8G8R8A8_UNORM:
281  avctx->pix_fmt = AV_PIX_FMT_RGBA;
282  break;
283  case DXGI_FORMAT_B8G8R8X8_UNORM_SRGB:
284  avctx->colorspace = AVCOL_SPC_RGB;
285  case DXGI_FORMAT_B8G8R8X8_TYPELESS:
286  case DXGI_FORMAT_B8G8R8X8_UNORM:
287  avctx->pix_fmt = AV_PIX_FMT_RGBA; // opaque
288  break;
289  case DXGI_FORMAT_B5G6R5_UNORM:
290  avctx->pix_fmt = AV_PIX_FMT_RGB565LE;
291  break;
292  /* Texture types. */
293  case DXGI_FORMAT_BC1_UNORM_SRGB:
294  avctx->colorspace = AVCOL_SPC_RGB;
295  case DXGI_FORMAT_BC1_TYPELESS:
296  case DXGI_FORMAT_BC1_UNORM:
297  ctx->dec.tex_ratio = 8;
298  ctx->dec.tex_funct = ctx->texdsp.dxt1a_block;
299  break;
300  case DXGI_FORMAT_BC2_UNORM_SRGB:
301  avctx->colorspace = AVCOL_SPC_RGB;
302  case DXGI_FORMAT_BC2_TYPELESS:
303  case DXGI_FORMAT_BC2_UNORM:
304  ctx->dec.tex_ratio = 16;
305  ctx->dec.tex_funct = ctx->texdsp.dxt3_block;
306  break;
307  case DXGI_FORMAT_BC3_UNORM_SRGB:
308  avctx->colorspace = AVCOL_SPC_RGB;
309  case DXGI_FORMAT_BC3_TYPELESS:
310  case DXGI_FORMAT_BC3_UNORM:
311  ctx->dec.tex_ratio = 16;
312  ctx->dec.tex_funct = ctx->texdsp.dxt5_block;
313  break;
314  case DXGI_FORMAT_BC4_TYPELESS:
315  case DXGI_FORMAT_BC4_UNORM:
316  ctx->dec.tex_ratio = 8;
317  ctx->dec.tex_funct = ctx->texdsp.rgtc1u_block;
318  break;
319  case DXGI_FORMAT_BC4_SNORM:
320  ctx->dec.tex_ratio = 8;
321  ctx->dec.tex_funct = ctx->texdsp.rgtc1s_block;
322  break;
323  case DXGI_FORMAT_BC5_TYPELESS:
324  case DXGI_FORMAT_BC5_UNORM:
325  ctx->dec.tex_ratio = 16;
326  ctx->dec.tex_funct = ctx->texdsp.rgtc2u_block;
327  break;
328  case DXGI_FORMAT_BC5_SNORM:
329  ctx->dec.tex_ratio = 16;
330  ctx->dec.tex_funct = ctx->texdsp.rgtc2s_block;
331  break;
332  default:
333  av_log(avctx, AV_LOG_ERROR,
334  "Unsupported DXGI format %d.\n", dxgi);
335  return AVERROR_INVALIDDATA;
336  }
337  break;
338  default:
339  av_log(avctx, AV_LOG_ERROR, "Unsupported %s fourcc.\n", av_fourcc2str(fourcc));
340  return AVERROR_INVALIDDATA;
341  }
342  } else if (ctx->paletted) {
343  if (bpp == 8) {
344  avctx->pix_fmt = AV_PIX_FMT_PAL8;
345  } else {
346  av_log(avctx, AV_LOG_ERROR, "Unsupported palette bpp %d.\n", bpp);
347  return AVERROR_INVALIDDATA;
348  }
349  } else {
350  /* 4 bpp */
351  if (bpp == 4 && r == 0 && g == 0 && b == 0 && a == 0)
352  avctx->pix_fmt = AV_PIX_FMT_PAL8;
353  /* 8 bpp */
354  else if (bpp == 8 && r == 0xff && g == 0 && b == 0 && a == 0)
355  avctx->pix_fmt = AV_PIX_FMT_GRAY8;
356  else if (bpp == 8 && r == 0 && g == 0 && b == 0 && a == 0xff)
357  avctx->pix_fmt = AV_PIX_FMT_GRAY8;
358  /* 16 bpp */
359  else if (bpp == 16 && r == 0xff && g == 0 && b == 0 && a == 0xff00)
360  avctx->pix_fmt = AV_PIX_FMT_YA8;
361  else if (bpp == 16 && r == 0xff00 && g == 0 && b == 0 && a == 0xff) {
362  avctx->pix_fmt = AV_PIX_FMT_YA8;
363  ctx->postproc = DDS_SWAP_ALPHA;
364  }
365  else if (bpp == 16 && r == 0xffff && g == 0 && b == 0 && a == 0)
366  avctx->pix_fmt = AV_PIX_FMT_GRAY16LE;
367  else if (bpp == 16 && r == 0x7c00 && g == 0x3e0 && b == 0x1f && a == 0)
368  avctx->pix_fmt = AV_PIX_FMT_RGB555LE;
369  else if (bpp == 16 && r == 0x7c00 && g == 0x3e0 && b == 0x1f && a == 0x8000)
370  avctx->pix_fmt = AV_PIX_FMT_RGB555LE; // alpha ignored
371  else if (bpp == 16 && r == 0xf800 && g == 0x7e0 && b == 0x1f && a == 0)
372  avctx->pix_fmt = AV_PIX_FMT_RGB565LE;
373  /* 24 bpp */
374  else if (bpp == 24 && r == 0xff0000 && g == 0xff00 && b == 0xff && a == 0)
375  avctx->pix_fmt = AV_PIX_FMT_BGR24;
376  /* 32 bpp */
377  else if (bpp == 32 && r == 0xff0000 && g == 0xff00 && b == 0xff && a == 0)
378  avctx->pix_fmt = AV_PIX_FMT_BGR0; // opaque
379  else if (bpp == 32 && r == 0xff && g == 0xff00 && b == 0xff0000 && a == 0)
380  avctx->pix_fmt = AV_PIX_FMT_RGB0; // opaque
381  else if (bpp == 32 && r == 0xff0000 && g == 0xff00 && b == 0xff && a == 0xff000000)
382  avctx->pix_fmt = AV_PIX_FMT_BGRA;
383  else if (bpp == 32 && r == 0xff && g == 0xff00 && b == 0xff0000 && a == 0xff000000)
384  avctx->pix_fmt = AV_PIX_FMT_RGBA;
385  /* give up */
386  else {
387  av_log(avctx, AV_LOG_ERROR, "Unknown pixel format "
388  "[bpp %d r 0x%x g 0x%x b 0x%x a 0x%x].\n", bpp, r, g, b, a);
389  return AVERROR_INVALIDDATA;
390  }
391  }
392 
393  /* Set any remaining post-proc that should happen before frame is ready. */
394  if (alpha_exponent)
395  ctx->postproc = DDS_ALPHA_EXP;
396  else if (normal_map)
397  ctx->postproc = DDS_NORMAL_MAP;
398  else if (ycocg_classic && !ctx->compressed)
399  ctx->postproc = DDS_RAW_YCOCG;
400 
401  /* ATI/NVidia variants sometimes add swizzling in bpp. */
402  switch (bpp) {
403  case MKTAG('A', '2', 'X', 'Y'):
404  ctx->postproc = DDS_SWIZZLE_A2XY;
405  break;
406  case MKTAG('x', 'G', 'B', 'R'):
407  ctx->postproc = DDS_SWIZZLE_XGBR;
408  break;
409  case MKTAG('x', 'R', 'B', 'G'):
410  ctx->postproc = DDS_SWIZZLE_XRBG;
411  break;
412  case MKTAG('R', 'B', 'x', 'G'):
413  ctx->postproc = DDS_SWIZZLE_RBXG;
414  break;
415  case MKTAG('R', 'G', 'x', 'B'):
416  ctx->postproc = DDS_SWIZZLE_RGXB;
417  break;
418  case MKTAG('R', 'x', 'B', 'G'):
419  ctx->postproc = DDS_SWIZZLE_RXBG;
420  break;
421  case MKTAG('x', 'G', 'x', 'R'):
422  ctx->postproc = DDS_SWIZZLE_XGXR;
423  break;
424  case MKTAG('A', '2', 'D', '5'):
425  ctx->postproc = DDS_NORMAL_MAP;
426  break;
427  }
428 
429  return 0;
430 }
431 
432 static void do_swizzle(AVFrame *frame, int x, int y)
433 {
434  int i;
435  for (i = 0; i < frame->linesize[0] * frame->height; i += 4) {
436  uint8_t *src = frame->data[0] + i;
437  FFSWAP(uint8_t, src[x], src[y]);
438  }
439 }
440 
441 static void run_postproc(AVCodecContext *avctx, AVFrame *frame)
442 {
443  DDSContext *ctx = avctx->priv_data;
444  int i, x_off;
445 
446  switch (ctx->postproc) {
447  case DDS_ALPHA_EXP:
448  /* Alpha-exponential mode divides each channel by the maximum
449  * R, G or B value, and stores the multiplying factor in the
450  * alpha channel. */
451  av_log(avctx, AV_LOG_DEBUG, "Post-processing alpha exponent.\n");
452 
453  for (i = 0; i < frame->linesize[0] * frame->height; i += 4) {
454  uint8_t *src = frame->data[0] + i;
455  int r = src[0];
456  int g = src[1];
457  int b = src[2];
458  int a = src[3];
459 
460  src[0] = r * a / 255;
461  src[1] = g * a / 255;
462  src[2] = b * a / 255;
463  src[3] = 255;
464  }
465  break;
466  case DDS_NORMAL_MAP:
467  /* Normal maps work in the XYZ color space and they encode
468  * X in R or in A, depending on the texture type, Y in G and
469  * derive Z with a square root of the distance.
470  *
471  * http://www.realtimecollisiondetection.net/blog/?p=28 */
472  av_log(avctx, AV_LOG_DEBUG, "Post-processing normal map.\n");
473 
474  x_off = ctx->dec.tex_ratio == 8 ? 0 : 3;
475  for (i = 0; i < frame->linesize[0] * frame->height; i += 4) {
476  uint8_t *src = frame->data[0] + i;
477  int x = src[x_off];
478  int y = src[1];
479  int z = 127;
480 
481  int d = (255 * 255 - x * x - y * y) / 2;
482  if (d > 0)
483  z = lrint(sqrtf(d));
484 
485  src[0] = x;
486  src[1] = y;
487  src[2] = z;
488  src[3] = 255;
489  }
490  break;
491  case DDS_RAW_YCOCG:
492  /* Data is Y-Co-Cg-A and not RGBA, but they are represented
493  * with the same masks in the DDPF header. */
494  av_log(avctx, AV_LOG_DEBUG, "Post-processing raw YCoCg.\n");
495 
496  for (i = 0; i < frame->linesize[0] * frame->height; i += 4) {
497  uint8_t *src = frame->data[0] + i;
498  int a = src[0];
499  int cg = src[1] - 128;
500  int co = src[2] - 128;
501  int y = src[3];
502 
503  src[0] = av_clip_uint8(y + co - cg);
504  src[1] = av_clip_uint8(y + cg);
505  src[2] = av_clip_uint8(y - co - cg);
506  src[3] = a;
507  }
508  break;
509  case DDS_SWAP_ALPHA:
510  /* Alpha and Luma are stored swapped. */
511  av_log(avctx, AV_LOG_DEBUG, "Post-processing swapped Luma/Alpha.\n");
512 
513  for (i = 0; i < frame->linesize[0] * frame->height; i += 2) {
514  uint8_t *src = frame->data[0] + i;
515  FFSWAP(uint8_t, src[0], src[1]);
516  }
517  break;
518  case DDS_SWIZZLE_A2XY:
519  /* Swap R and G, often used to restore a standard RGTC2. */
520  av_log(avctx, AV_LOG_DEBUG, "Post-processing A2XY swizzle.\n");
521  do_swizzle(frame, 0, 1);
522  break;
523  case DDS_SWIZZLE_RBXG:
524  /* Swap G and A, then B and new A (G). */
525  av_log(avctx, AV_LOG_DEBUG, "Post-processing RBXG swizzle.\n");
526  do_swizzle(frame, 1, 3);
527  do_swizzle(frame, 2, 3);
528  break;
529  case DDS_SWIZZLE_RGXB:
530  /* Swap B and A. */
531  av_log(avctx, AV_LOG_DEBUG, "Post-processing RGXB swizzle.\n");
532  do_swizzle(frame, 2, 3);
533  break;
534  case DDS_SWIZZLE_RXBG:
535  /* Swap G and A. */
536  av_log(avctx, AV_LOG_DEBUG, "Post-processing RXBG swizzle.\n");
537  do_swizzle(frame, 1, 3);
538  break;
539  case DDS_SWIZZLE_RXGB:
540  /* Swap R and A (misleading name). */
541  av_log(avctx, AV_LOG_DEBUG, "Post-processing RXGB swizzle.\n");
542  do_swizzle(frame, 0, 3);
543  break;
544  case DDS_SWIZZLE_XGBR:
545  /* Swap B and A, then R and new A (B). */
546  av_log(avctx, AV_LOG_DEBUG, "Post-processing XGBR swizzle.\n");
547  do_swizzle(frame, 2, 3);
548  do_swizzle(frame, 0, 3);
549  break;
550  case DDS_SWIZZLE_XGXR:
551  /* Swap G and A, then R and new A (G), then new R (G) and new G (A).
552  * This variant does not store any B component. */
553  av_log(avctx, AV_LOG_DEBUG, "Post-processing XGXR swizzle.\n");
554  do_swizzle(frame, 1, 3);
555  do_swizzle(frame, 0, 3);
556  do_swizzle(frame, 0, 1);
557  break;
558  case DDS_SWIZZLE_XRBG:
559  /* Swap G and A, then R and new A (G). */
560  av_log(avctx, AV_LOG_DEBUG, "Post-processing XRBG swizzle.\n");
561  do_swizzle(frame, 1, 3);
562  do_swizzle(frame, 0, 3);
563  break;
564  }
565 }
566 
567 static int dds_decode(AVCodecContext *avctx, AVFrame *frame,
568  int *got_frame, AVPacket *avpkt)
569 {
570  DDSContext *ctx = avctx->priv_data;
571  GetByteContext *gbc = &ctx->gbc;
572  int mipmap;
573  int ret;
574  int width, height;
575 
576  ff_texturedsp_init(&ctx->texdsp);
577  bytestream2_init(gbc, avpkt->data, avpkt->size);
578 
579  if (bytestream2_get_bytes_left(gbc) < 128) {
580  av_log(avctx, AV_LOG_ERROR, "Frame is too small (%d).\n",
581  bytestream2_get_bytes_left(gbc));
582  return AVERROR_INVALIDDATA;
583  }
584 
585  if (bytestream2_get_le32(gbc) != MKTAG('D', 'D', 'S', ' ') ||
586  bytestream2_get_le32(gbc) != 124) { // header size
587  av_log(avctx, AV_LOG_ERROR, "Invalid DDS header.\n");
588  return AVERROR_INVALIDDATA;
589  }
590 
591  bytestream2_skip(gbc, 4); // flags
592 
593  height = bytestream2_get_le32(gbc);
594  width = bytestream2_get_le32(gbc);
595  ret = ff_set_dimensions(avctx, width, height);
596  if (ret < 0) {
597  av_log(avctx, AV_LOG_ERROR, "Invalid image size %dx%d.\n",
598  avctx->width, avctx->height);
599  return ret;
600  }
601 
602  /* Since codec is based on 4x4 blocks, size is aligned to 4. */
603  avctx->coded_width = FFALIGN(avctx->width, TEXTURE_BLOCK_W);
604  avctx->coded_height = FFALIGN(avctx->height, TEXTURE_BLOCK_H);
605 
606  bytestream2_skip(gbc, 4); // pitch
607  bytestream2_skip(gbc, 4); // depth
608  mipmap = bytestream2_get_le32(gbc);
609  if (mipmap != 0)
610  av_log(avctx, AV_LOG_VERBOSE, "Found %d mipmaps (ignored).\n", mipmap);
611 
612  /* Extract pixel format information, considering additional elements
613  * in reserved1 and reserved2. */
614  ret = parse_pixel_format(avctx);
615  if (ret < 0)
616  return ret;
617 
618  ret = ff_get_buffer(avctx, frame, 0);
619  if (ret < 0)
620  return ret;
621 
622  if (ctx->compressed) {
623  int size = (avctx->coded_height / TEXTURE_BLOCK_H) *
624  (avctx->coded_width / TEXTURE_BLOCK_W) * ctx->dec.tex_ratio;
625  ctx->dec.slice_count = av_clip(avctx->thread_count, 1,
626  avctx->coded_height / TEXTURE_BLOCK_H);
627 
628  if (bytestream2_get_bytes_left(gbc) < size) {
629  av_log(avctx, AV_LOG_ERROR,
630  "Compressed Buffer is too small (%d < %d).\n",
631  bytestream2_get_bytes_left(gbc), size);
632  return AVERROR_INVALIDDATA;
633  }
634 
635  /* Use the decompress function on the texture, one block per thread. */
636  ctx->dec.tex_data.in = gbc->buffer;
637  ctx->dec.frame_data.out = frame->data[0];
638  ctx->dec.stride = frame->linesize[0];
639  ctx->dec.width = avctx->coded_width;
640  ctx->dec.height = avctx->coded_height;
641  ff_texturedsp_exec_decompress_threads(avctx, &ctx->dec);
642  } else if (!ctx->paletted && ctx->bpp == 4 && avctx->pix_fmt == AV_PIX_FMT_PAL8) {
643  uint8_t *dst = frame->data[0];
644  int x, y, i;
645 
646  /* Use the first 64 bytes as palette, then copy the rest. */
647  bytestream2_get_buffer(gbc, frame->data[1], 16 * 4);
648  for (i = 0; i < 16; i++) {
649  AV_WN32(frame->data[1] + i*4,
650  (frame->data[1][2+i*4]<<0)+
651  (frame->data[1][1+i*4]<<8)+
652  (frame->data[1][0+i*4]<<16)+
653  ((unsigned)frame->data[1][3+i*4]<<24)
654  );
655  }
656 #if FF_API_PALETTE_HAS_CHANGED
657 FF_DISABLE_DEPRECATION_WARNINGS
658  frame->palette_has_changed = 1;
659 FF_ENABLE_DEPRECATION_WARNINGS
660 #endif
661 
662  if (bytestream2_get_bytes_left(gbc) < frame->height * frame->width / 2) {
663  av_log(avctx, AV_LOG_ERROR, "Buffer is too small (%d < %d).\n",
664  bytestream2_get_bytes_left(gbc), frame->height * frame->width / 2);
665  return AVERROR_INVALIDDATA;
666  }
667 
668  for (y = 0; y < frame->height; y++) {
669  for (x = 0; x < frame->width; x += 2) {
670  uint8_t val = bytestream2_get_byte(gbc);
671  dst[x ] = val & 0xF;
672  dst[x + 1] = val >> 4;
673  }
674  dst += frame->linesize[0];
675  }
676  } else {
677  int linesize = av_image_get_linesize(avctx->pix_fmt, frame->width, 0);
678 
679  if (ctx->paletted) {
680  int i;
681  /* Use the first 1024 bytes as palette, then copy the rest. */
682  bytestream2_get_buffer(gbc, frame->data[1], 256 * 4);
683  for (i = 0; i < 256; i++)
684  AV_WN32(frame->data[1] + i*4,
685  (frame->data[1][2+i*4]<<0)+
686  (frame->data[1][1+i*4]<<8)+
687  (frame->data[1][0+i*4]<<16)+
688  ((unsigned)frame->data[1][3+i*4]<<24)
689  );
690 
691 #if FF_API_PALETTE_HAS_CHANGED
692 FF_DISABLE_DEPRECATION_WARNINGS
693  frame->palette_has_changed = 1;
694 FF_ENABLE_DEPRECATION_WARNINGS
695 #endif
696  }
697 
698  if (bytestream2_get_bytes_left(gbc) < frame->height * linesize) {
699  av_log(avctx, AV_LOG_ERROR, "Buffer is too small (%d < %d).\n",
700  bytestream2_get_bytes_left(gbc), frame->height * linesize);
701  return AVERROR_INVALIDDATA;
702  }
703 
704  av_image_copy_plane(frame->data[0], frame->linesize[0],
705  gbc->buffer, linesize,
706  linesize, frame->height);
707  }
708 
709  /* Run any post processing here if needed. */
710  if (ctx->postproc != DDS_NONE)
711  run_postproc(avctx, frame);
712 
713  /* Frame is ready to be output. */
714  frame->pict_type = AV_PICTURE_TYPE_I;
715  frame->flags |= AV_FRAME_FLAG_KEY;
716  *got_frame = 1;
717 
718  return avpkt->size;
719 }
720 
721 const FFCodec ff_dds_decoder = {
722  .p.name = "dds",
723  CODEC_LONG_NAME("DirectDraw Surface image decoder"),
724  .p.type = AVMEDIA_TYPE_VIDEO,
725  .p.id = AV_CODEC_ID_DDS,
726  FF_CODEC_DECODE_CB(dds_decode),
727  .priv_data_size = sizeof(DDSContext),
728  .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_SLICE_THREADS,
729 };
DXGI_FORMAT_BC4_SNORM
@ DXGI_FORMAT_BC4_SNORM
Definition: dds.c:86
FF_ENABLE_DEPRECATION_WARNINGS
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:73
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:186
DDS_SWAP_ALPHA
@ DDS_SWAP_ALPHA
Definition: dds.c:49
DXGI_FORMAT_B8G8R8A8_TYPELESS
@ DXGI_FORMAT_B8G8R8A8_TYPELESS
Definition: dds.c:93
DXGI_FORMAT_BC2_UNORM_SRGB
@ DXGI_FORMAT_BC2_UNORM_SRGB
Definition: dds.c:80
DDS_RAW_YCOCG
@ DDS_RAW_YCOCG
Definition: dds.c:48
dds_decode
static int dds_decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *avpkt)
Definition: dds.c:567
av_clip
#define av_clip
Definition: common.h:98
r
const char * r
Definition: vf_curves.c:126
AVFrame::palette_has_changed
attribute_deprecated int palette_has_changed
Tell user application that palette has changed from previous frame.
Definition: frame.h:537
AV_PIX_FMT_YA8
@ AV_PIX_FMT_YA8
8 bits gray, 8 bits alpha
Definition: pixfmt.h:140
AVCodecContext::colorspace
enum AVColorSpace colorspace
YUV colorspace type.
Definition: avcodec.h:685
DXGI_FORMAT_R8G8B8A8_UNORM_SRGB
@ DXGI_FORMAT_R8G8B8A8_UNORM_SRGB
Definition: dds.c:70
libm.h
DXGI_FORMAT_B8G8R8X8_UNORM
@ DXGI_FORMAT_B8G8R8X8_UNORM
Definition: dds.c:92
TEXTURE_BLOCK_H
#define TEXTURE_BLOCK_H
Definition: texturedsp.h:43
DXGI_FORMAT_B5G6R5_UNORM
@ DXGI_FORMAT_B5G6R5_UNORM
Definition: dds.c:90
GetByteContext
Definition: bytestream.h:33
DXGI_FORMAT_B8G8R8A8_UNORM
@ DXGI_FORMAT_B8G8R8A8_UNORM
Definition: dds.c:91
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:344
AVFrame::width
int width
Definition: frame.h:416
DDSContext::compressed
int compressed
Definition: dds.c:103
AVPacket::data
uint8_t * data
Definition: packet.h:522
DXGI_FORMAT_BC4_TYPELESS
@ DXGI_FORMAT_BC4_TYPELESS
Definition: dds.c:84
b
#define b
Definition: input.c:41
DDS_NONE
@ DDS_NONE
Definition: dds.c:45
DXGI_FORMAT_BC1_UNORM
@ DXGI_FORMAT_BC1_UNORM
Definition: dds.c:76
FFCodec
Definition: codec_internal.h:127
AV_LOG_VERBOSE
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:196
AVCOL_SPC_RGB
@ AVCOL_SPC_RGB
order of coefficients is actually GBR, also IEC 61966-2-1 (sRGB), YZX and ST 428-1
Definition: pixfmt.h:610
DXGI_FORMAT_R16G16B16A16_TYPELESS
@ DXGI_FORMAT_R16G16B16A16_TYPELESS
Definition: dds.c:61
AV_PIX_FMT_BGR24
@ AV_PIX_FMT_BGR24
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:76
AV_PIX_FMT_BGRA
@ AV_PIX_FMT_BGRA
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
Definition: pixfmt.h:102
AVFrame::flags
int flags
Frame flags, a combination of AV_FRAME_FLAGS.
Definition: frame.h:616
TextureDSPContext
Definition: texturedsp.h:45
DXGI_FORMAT_B8G8R8X8_UNORM_SRGB
@ DXGI_FORMAT_B8G8R8X8_UNORM_SRGB
Definition: dds.c:96
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:94
DDSContext::paletted
int paletted
Definition: dds.c:104
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:365
av_image_copy_plane
void av_image_copy_plane(uint8_t *dst, int dst_linesize, const uint8_t *src, int src_linesize, int bytewidth, int height)
Copy image plane from src to dst.
Definition: imgutils.c:374
bytestream2_skip
static av_always_inline void bytestream2_skip(GetByteContext *g, unsigned int size)
Definition: bytestream.h:168
DXGI_FORMAT_BC1_TYPELESS
@ DXGI_FORMAT_BC1_TYPELESS
Definition: dds.c:75
texturedsp.h
FFCodec::p
AVCodec p
The public AVCodec.
Definition: codec_internal.h:131
DDSContext::bpp
int bpp
Definition: dds.c:105
AVCodecContext::thread_count
int thread_count
thread count is used to decide how many independent tasks should be passed to execute()
Definition: avcodec.h:1582
DDPF_FOURCC
#define DDPF_FOURCC
Definition: dds.c:40
val
static double val(void *priv, double ch)
Definition: aeval.c:78
AVCodecContext::coded_height
int coded_height
Definition: avcodec.h:633
run_postproc
static void run_postproc(AVCodecContext *avctx, AVFrame *frame)
Definition: dds.c:441
DXGI_FORMAT_B8G8R8X8_TYPELESS
@ DXGI_FORMAT_B8G8R8X8_TYPELESS
Definition: dds.c:95
TextureDSPThreadContext
Definition: texturedsp.h:69
lrint
#define lrint
Definition: tablegen.h:53
DDSPostProc
DDSPostProc
Definition: dds.c:44
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
AV_FRAME_FLAG_KEY
#define AV_FRAME_FLAG_KEY
A flag to mark frames that are keyframes.
Definition: frame.h:595
width
#define width
DDS_SWIZZLE_XRBG
@ DDS_SWIZZLE_XRBG
Definition: dds.c:56
FF_CODEC_DECODE_CB
#define FF_CODEC_DECODE_CB(func)
Definition: codec_internal.h:287
DDS_SWIZZLE_XGBR
@ DDS_SWIZZLE_XGBR
Definition: dds.c:55
DXGI_FORMAT_R16G16B16A16_SNORM
@ DXGI_FORMAT_R16G16B16A16_SNORM
Definition: dds.c:65
g
const char * g
Definition: vf_curves.c:127
GetByteContext::buffer
const uint8_t * buffer
Definition: bytestream.h:34
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:201
ctx
AVFormatContext * ctx
Definition: movenc.c:48
decode.h
ff_texturedsp_init
av_cold void ff_texturedsp_init(TextureDSPContext *c)
Definition: texturedsp.c:640
DDS_SWIZZLE_RXBG
@ DDS_SWIZZLE_RXBG
Definition: dds.c:53
CODEC_LONG_NAME
#define CODEC_LONG_NAME(str)
Definition: codec_internal.h:272
AV_PIX_FMT_RGBA
@ AV_PIX_FMT_RGBA
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:100
frame
static AVFrame * frame
Definition: demux_decode.c:54
AV_PIX_FMT_RGB565LE
@ AV_PIX_FMT_RGB565LE
packed RGB 5:6:5, 16bpp, (msb) 5R 6G 5B(lsb), little-endian
Definition: pixfmt.h:113
DXGI_FORMAT_R16G16B16A16_UNORM
@ DXGI_FORMAT_R16G16B16A16_UNORM
Definition: dds.c:63
AV_PIX_FMT_YUYV422
@ AV_PIX_FMT_YUYV422
packed YUV 4:2:2, 16bpp, Y0 Cb Y1 Cr
Definition: pixfmt.h:74
AV_PIX_FMT_MONOBLACK
@ AV_PIX_FMT_MONOBLACK
Y , 1bpp, 0 is black, 1 is white, in each byte pixels are ordered from the msb to the lsb.
Definition: pixfmt.h:83
DDS_SWIZZLE_RBXG
@ DDS_SWIZZLE_RBXG
Definition: dds.c:51
AV_PICTURE_TYPE_I
@ AV_PICTURE_TYPE_I
Intra.
Definition: avutil.h:279
bytestream2_get_buffer
static av_always_inline unsigned int bytestream2_get_buffer(GetByteContext *g, uint8_t *dst, unsigned int size)
Definition: bytestream.h:267
sqrtf
static __device__ float sqrtf(float a)
Definition: cuda_runtime.h:184
AV_PIX_FMT_BGR0
@ AV_PIX_FMT_BGR0
packed BGR 8:8:8, 32bpp, BGRXBGRX... X=unused/undefined
Definition: pixfmt.h:265
ff_dds_decoder
const FFCodec ff_dds_decoder
Definition: dds.c:721
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:81
DXGI_FORMAT_BC4_UNORM
@ DXGI_FORMAT_BC4_UNORM
Definition: dds.c:85
DDPF_NORMALMAP
#define DDPF_NORMALMAP
Definition: dds.c:42
DDS_SWIZZLE_XGXR
@ DDS_SWIZZLE_XGXR
Definition: dds.c:57
bytestream2_get_bytes_left
static av_always_inline int bytestream2_get_bytes_left(GetByteContext *g)
Definition: bytestream.h:158
ff_texturedsp_exec_decompress_threads
int ff_texturedsp_exec_decompress_threads(struct AVCodecContext *avctx, TextureDSPThreadContext *ctx)
AVFrame::pict_type
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:446
ff_get_buffer
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: decode.c:1569
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:523
codec_internal.h
AV_WN32
#define AV_WN32(p, v)
Definition: intreadwrite.h:374
DDS_SWIZZLE_RXGB
@ DDS_SWIZZLE_RXGB
Definition: dds.c:54
DXGI_FORMAT_BC3_UNORM_SRGB
@ DXGI_FORMAT_BC3_UNORM_SRGB
Definition: dds.c:83
size
int size
Definition: twinvq_data.h:10344
DDSContext::texdsp
TextureDSPContext texdsp
Definition: dds.c:100
DXGI_FORMAT_R8G8B8A8_SNORM
@ DXGI_FORMAT_R8G8B8A8_SNORM
Definition: dds.c:72
DDSContext
Definition: dds.c:99
DXGI_FORMAT_BC5_SNORM
@ DXGI_FORMAT_BC5_SNORM
Definition: dds.c:89
DXGI_FORMAT_R8G8B8A8_TYPELESS
@ DXGI_FORMAT_R8G8B8A8_TYPELESS
Definition: dds.c:68
height
#define height
a
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
Definition: undefined.txt:41
do_swizzle
static void do_swizzle(AVFrame *frame, int x, int y)
Definition: dds.c:432
AV_CODEC_CAP_SLICE_THREADS
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: codec.h:114
AV_PIX_FMT_RGB0
@ AV_PIX_FMT_RGB0
packed RGB 8:8:8, 32bpp, RGBXRGBX... X=unused/undefined
Definition: pixfmt.h:263
DXGI_FORMAT_R8G8B8A8_UINT
@ DXGI_FORMAT_R8G8B8A8_UINT
Definition: dds.c:71
DDSContext::postproc
enum DDSPostProc postproc
Definition: dds.c:106
av_image_get_linesize
int av_image_get_linesize(enum AVPixelFormat pix_fmt, int width, int plane)
Compute the size of an image line with format pix_fmt and width width for the plane plane.
Definition: imgutils.c:76
DXGI_FORMAT_R16G16B16A16_FLOAT
@ DXGI_FORMAT_R16G16B16A16_FLOAT
Definition: dds.c:62
AV_PIX_FMT_BGRA64
#define AV_PIX_FMT_BGRA64
Definition: pixfmt.h:473
AV_PIX_FMT_RGB555LE
@ AV_PIX_FMT_RGB555LE
packed RGB 5:5:5, 16bpp, (msb)1X 5R 5G 5B(lsb), little-endian, X=unused/undefined
Definition: pixfmt.h:115
DXGI_FORMAT_BC2_TYPELESS
@ DXGI_FORMAT_BC2_TYPELESS
Definition: dds.c:78
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:255
DXGI_FORMAT_R16G16B16A16_SINT
@ DXGI_FORMAT_R16G16B16A16_SINT
Definition: dds.c:66
DDSDXGIFormat
DDSDXGIFormat
Definition: dds.c:60
parse_pixel_format
static int parse_pixel_format(AVCodecContext *avctx)
Definition: dds.c:111
TEXTURE_BLOCK_W
#define TEXTURE_BLOCK_W
Definition: texturedsp.h:42
AVCodec::name
const char * name
Name of the codec implementation.
Definition: codec.h:194
AVCodecContext::height
int height
Definition: avcodec.h:618
AVCodecContext::pix_fmt
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:657
DXGI_FORMAT_BC1_UNORM_SRGB
@ DXGI_FORMAT_BC1_UNORM_SRGB
Definition: dds.c:77
avcodec.h
AV_PIX_FMT_PAL8
@ AV_PIX_FMT_PAL8
8 bits with AV_PIX_FMT_RGB32 palette
Definition: pixfmt.h:84
array
static int array[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:111
ret
ret
Definition: filter_design.txt:187
DDS_NORMAL_MAP
@ DDS_NORMAL_MAP
Definition: dds.c:47
DXGI_FORMAT_BC5_TYPELESS
@ DXGI_FORMAT_BC5_TYPELESS
Definition: dds.c:87
FFSWAP
#define FFSWAP(type, a, b)
Definition: macros.h:52
DDPF_PALETTE
#define DDPF_PALETTE
Definition: dds.c:41
AV_PIX_FMT_UYVY422
@ AV_PIX_FMT_UYVY422
packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1
Definition: pixfmt.h:88
DXGI_FORMAT_BC3_UNORM
@ DXGI_FORMAT_BC3_UNORM
Definition: dds.c:82
AVCodecContext
main external API structure.
Definition: avcodec.h:445
AVFrame::height
int height
Definition: frame.h:416
DDSContext::dec
TextureDSPThreadContext dec
Definition: dds.c:108
DDSContext::gbc
GetByteContext gbc
Definition: dds.c:101
DXGI_FORMAT_BC2_UNORM
@ DXGI_FORMAT_BC2_UNORM
Definition: dds.c:79
DDS_SWIZZLE_RGXB
@ DDS_SWIZZLE_RGXB
Definition: dds.c:52
av_clip_uint8
#define av_clip_uint8
Definition: common.h:104
DXGI_FORMAT_R16G16B16A16_UINT
@ DXGI_FORMAT_R16G16B16A16_UINT
Definition: dds.c:64
FF_DISABLE_DEPRECATION_WARNINGS
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:72
AVCodecContext::coded_width
int coded_width
Bitstream width / height, may be different from width/height e.g.
Definition: avcodec.h:633
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AV_CODEC_ID_DDS
@ AV_CODEC_ID_DDS
Definition: codec_id.h:242
AV_PIX_FMT_GRAY16LE
@ AV_PIX_FMT_GRAY16LE
Y , 16bpp, little-endian.
Definition: pixfmt.h:105
DXGI_FORMAT_BC3_TYPELESS
@ DXGI_FORMAT_BC3_TYPELESS
Definition: dds.c:81
FFALIGN
#define FFALIGN(x, a)
Definition: macros.h:78
AVPacket
This structure stores compressed data.
Definition: packet.h:499
AVCodecContext::priv_data
void * priv_data
Definition: avcodec.h:472
DDS_SWIZZLE_A2XY
@ DDS_SWIZZLE_A2XY
Definition: dds.c:50
src
INIT_CLIP pixel * src
Definition: h264pred_template.c:418
d
d
Definition: ffmpeg_filter.c:409
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:618
bytestream.h
imgutils.h
DXGI_FORMAT_BC5_UNORM
@ DXGI_FORMAT_BC5_UNORM
Definition: dds.c:88
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:482
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, a positive or negative value, which is typically indicating the size in bytes of each pict...
Definition: frame.h:389
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
DDS_ALPHA_EXP
@ DDS_ALPHA_EXP
Definition: dds.c:46
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:61
DXGI_FORMAT_R8G8B8A8_UNORM
@ DXGI_FORMAT_R8G8B8A8_UNORM
Definition: dds.c:69
MKTAG
#define MKTAG(a, b, c, d)
Definition: macros.h:55
fourcc
uint32_t fourcc
Definition: vaapi_decode.c:240
DXGI_FORMAT_B8G8R8A8_UNORM_SRGB
@ DXGI_FORMAT_B8G8R8A8_UNORM_SRGB
Definition: dds.c:94
DXGI_FORMAT_R8G8B8A8_SINT
@ DXGI_FORMAT_R8G8B8A8_SINT
Definition: dds.c:73
av_fourcc2str
#define av_fourcc2str(fourcc)
Definition: avutil.h:345
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