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ulti.c
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1 /*
2  * IBM Ultimotion Video Decoder
3  * Copyright (C) 2004 Konstantin Shishkov
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  * IBM Ultimotion Video Decoder.
25  */
26 
27 #include <stdio.h>
28 #include <stdlib.h>
29 #include <string.h>
30 
31 #include "avcodec.h"
32 #include "bytestream.h"
33 #include "internal.h"
34 
35 #include "ulti_cb.h"
36 
37 typedef struct UltimotionDecodeContext {
44 
46 {
48 
49  s->avctx = avctx;
50  s->width = avctx->width;
51  s->height = avctx->height;
52  s->blocks = (s->width / 8) * (s->height / 8);
53  if (s->blocks == 0)
54  return AVERROR_INVALIDDATA;
55  avctx->pix_fmt = AV_PIX_FMT_YUV410P;
57 
58  s->frame = av_frame_alloc();
59  if (!s->frame)
60  return AVERROR(ENOMEM);
61 
62  return 0;
63 }
64 
67 
68  av_frame_free(&s->frame);
69 
70  return 0;
71 }
72 
73 static const int block_coords[8] = // 4x4 block coords in 8x8 superblock
74  { 0, 0, 0, 4, 4, 4, 4, 0};
75 
76 static const int angle_by_index[4] = { 0, 2, 6, 12};
77 
78 /* Lookup tables for luma and chroma - used by ulti_convert_yuv() */
79 static const uint8_t ulti_lumas[64] =
80  { 0x10, 0x13, 0x17, 0x1A, 0x1E, 0x21, 0x25, 0x28,
81  0x2C, 0x2F, 0x33, 0x36, 0x3A, 0x3D, 0x41, 0x44,
82  0x48, 0x4B, 0x4F, 0x52, 0x56, 0x59, 0x5C, 0x60,
83  0x63, 0x67, 0x6A, 0x6E, 0x71, 0x75, 0x78, 0x7C,
84  0x7F, 0x83, 0x86, 0x8A, 0x8D, 0x91, 0x94, 0x98,
85  0x9B, 0x9F, 0xA2, 0xA5, 0xA9, 0xAC, 0xB0, 0xB3,
86  0xB7, 0xBA, 0xBE, 0xC1, 0xC5, 0xC8, 0xCC, 0xCF,
87  0xD3, 0xD6, 0xDA, 0xDD, 0xE1, 0xE4, 0xE8, 0xEB};
88 
89 static const uint8_t ulti_chromas[16] =
90  { 0x60, 0x67, 0x6D, 0x73, 0x7A, 0x80, 0x86, 0x8D,
91  0x93, 0x99, 0xA0, 0xA6, 0xAC, 0xB3, 0xB9, 0xC0};
92 
93 /* convert Ultimotion YUV block (sixteen 6-bit Y samples and
94  two 4-bit chroma samples) into standard YUV and put it into frame */
95 static void ulti_convert_yuv(AVFrame *frame, int x, int y,
96  uint8_t *luma,int chroma)
97 {
98  uint8_t *y_plane, *cr_plane, *cb_plane;
99  int i;
100 
101  y_plane = frame->data[0] + x + y * frame->linesize[0];
102  cr_plane = frame->data[1] + (x / 4) + (y / 4) * frame->linesize[1];
103  cb_plane = frame->data[2] + (x / 4) + (y / 4) * frame->linesize[2];
104 
105  cr_plane[0] = ulti_chromas[chroma >> 4];
106 
107  cb_plane[0] = ulti_chromas[chroma & 0xF];
108 
109 
110  for(i = 0; i < 16; i++){
111  y_plane[i & 3] = ulti_lumas[luma[i]];
112  if((i & 3) == 3) { //next row
113  y_plane += frame->linesize[0];
114  }
115  }
116 }
117 
118 /* generate block like in MS Video1 */
119 static void ulti_pattern(AVFrame *frame, int x, int y,
120  int f0, int f1, int Y0, int Y1, int chroma)
121 {
122  uint8_t Luma[16];
123  int mask, i;
124  for(mask = 0x80, i = 0; mask; mask >>= 1, i++) {
125  if(f0 & mask)
126  Luma[i] = Y1;
127  else
128  Luma[i] = Y0;
129  }
130 
131  for(mask = 0x80, i = 8; mask; mask >>= 1, i++) {
132  if(f1 & mask)
133  Luma[i] = Y1;
134  else
135  Luma[i] = Y0;
136  }
137 
138  ulti_convert_yuv(frame, x, y, Luma, chroma);
139 }
140 
141 /* fill block with some gradient */
142 static void ulti_grad(AVFrame *frame, int x, int y, uint8_t *Y, int chroma, int angle)
143 {
144  uint8_t Luma[16];
145  if(angle & 8) { //reverse order
146  int t;
147  angle &= 0x7;
148  t = Y[0];
149  Y[0] = Y[3];
150  Y[3] = t;
151  t = Y[1];
152  Y[1] = Y[2];
153  Y[2] = t;
154  }
155  switch(angle){
156  case 0:
157  Luma[0] = Y[0]; Luma[1] = Y[1]; Luma[2] = Y[2]; Luma[3] = Y[3];
158  Luma[4] = Y[0]; Luma[5] = Y[1]; Luma[6] = Y[2]; Luma[7] = Y[3];
159  Luma[8] = Y[0]; Luma[9] = Y[1]; Luma[10] = Y[2]; Luma[11] = Y[3];
160  Luma[12] = Y[0]; Luma[13] = Y[1]; Luma[14] = Y[2]; Luma[15] = Y[3];
161  break;
162  case 1:
163  Luma[0] = Y[1]; Luma[1] = Y[2]; Luma[2] = Y[3]; Luma[3] = Y[3];
164  Luma[4] = Y[0]; Luma[5] = Y[1]; Luma[6] = Y[2]; Luma[7] = Y[3];
165  Luma[8] = Y[0]; Luma[9] = Y[1]; Luma[10] = Y[2]; Luma[11] = Y[3];
166  Luma[12] = Y[0]; Luma[13] = Y[0]; Luma[14] = Y[1]; Luma[15] = Y[2];
167  break;
168  case 2:
169  Luma[0] = Y[1]; Luma[1] = Y[2]; Luma[2] = Y[3]; Luma[3] = Y[3];
170  Luma[4] = Y[1]; Luma[5] = Y[2]; Luma[6] = Y[2]; Luma[7] = Y[3];
171  Luma[8] = Y[0]; Luma[9] = Y[1]; Luma[10] = Y[1]; Luma[11] = Y[2];
172  Luma[12] = Y[0]; Luma[13] = Y[0]; Luma[14] = Y[1]; Luma[15] = Y[2];
173  break;
174  case 3:
175  Luma[0] = Y[2]; Luma[1] = Y[3]; Luma[2] = Y[3]; Luma[3] = Y[3];
176  Luma[4] = Y[1]; Luma[5] = Y[2]; Luma[6] = Y[2]; Luma[7] = Y[3];
177  Luma[8] = Y[0]; Luma[9] = Y[1]; Luma[10] = Y[1]; Luma[11] = Y[2];
178  Luma[12] = Y[0]; Luma[13] = Y[0]; Luma[14] = Y[0]; Luma[15] = Y[1];
179  break;
180  case 4:
181  Luma[0] = Y[3]; Luma[1] = Y[3]; Luma[2] = Y[3]; Luma[3] = Y[3];
182  Luma[4] = Y[2]; Luma[5] = Y[2]; Luma[6] = Y[2]; Luma[7] = Y[2];
183  Luma[8] = Y[1]; Luma[9] = Y[1]; Luma[10] = Y[1]; Luma[11] = Y[1];
184  Luma[12] = Y[0]; Luma[13] = Y[0]; Luma[14] = Y[0]; Luma[15] = Y[0];
185  break;
186  case 5:
187  Luma[0] = Y[3]; Luma[1] = Y[3]; Luma[2] = Y[3]; Luma[3] = Y[2];
188  Luma[4] = Y[3]; Luma[5] = Y[2]; Luma[6] = Y[2]; Luma[7] = Y[1];
189  Luma[8] = Y[2]; Luma[9] = Y[1]; Luma[10] = Y[1]; Luma[11] = Y[0];
190  Luma[12] = Y[1]; Luma[13] = Y[0]; Luma[14] = Y[0]; Luma[15] = Y[0];
191  break;
192  case 6:
193  Luma[0] = Y[3]; Luma[1] = Y[3]; Luma[2] = Y[2]; Luma[3] = Y[2];
194  Luma[4] = Y[3]; Luma[5] = Y[2]; Luma[6] = Y[1]; Luma[7] = Y[1];
195  Luma[8] = Y[2]; Luma[9] = Y[2]; Luma[10] = Y[1]; Luma[11] = Y[0];
196  Luma[12] = Y[1]; Luma[13] = Y[1]; Luma[14] = Y[0]; Luma[15] = Y[0];
197  break;
198  case 7:
199  Luma[0] = Y[3]; Luma[1] = Y[3]; Luma[2] = Y[2]; Luma[3] = Y[1];
200  Luma[4] = Y[3]; Luma[5] = Y[2]; Luma[6] = Y[1]; Luma[7] = Y[0];
201  Luma[8] = Y[3]; Luma[9] = Y[2]; Luma[10] = Y[1]; Luma[11] = Y[0];
202  Luma[12] = Y[2]; Luma[13] = Y[1]; Luma[14] = Y[0]; Luma[15] = Y[0];
203  break;
204  default:
205  Luma[0] = Y[0]; Luma[1] = Y[0]; Luma[2] = Y[1]; Luma[3] = Y[1];
206  Luma[4] = Y[0]; Luma[5] = Y[0]; Luma[6] = Y[1]; Luma[7] = Y[1];
207  Luma[8] = Y[2]; Luma[9] = Y[2]; Luma[10] = Y[3]; Luma[11] = Y[3];
208  Luma[12] = Y[2]; Luma[13] = Y[2]; Luma[14] = Y[3]; Luma[15] = Y[3];
209  break;
210  }
211 
212  ulti_convert_yuv(frame, x, y, Luma, chroma);
213 }
214 
216  void *data, int *got_frame,
217  AVPacket *avpkt)
218 {
219  const uint8_t *buf = avpkt->data;
220  int buf_size = avpkt->size;
222  int modifier = 0;
223  int uniq = 0;
224  int mode = 0;
225  int blocks = 0;
226  int done = 0;
227  int x = 0, y = 0;
228  int i, ret;
229  int skip;
230  int tmp;
231 
232  if ((ret = ff_reget_buffer(avctx, s->frame)) < 0)
233  return ret;
234 
235  bytestream2_init(&s->gb, buf, buf_size);
236 
237  while(!done) {
238  int idx;
239  if(blocks >= s->blocks || y >= s->height)
240  break;//all blocks decoded
241 
242  if (bytestream2_get_bytes_left(&s->gb) < 1)
243  goto err;
244  idx = bytestream2_get_byteu(&s->gb);
245  if((idx & 0xF8) == 0x70) {
246  switch(idx) {
247  case 0x70: //change modifier
248  modifier = bytestream2_get_byte(&s->gb);
249  if(modifier>1)
250  av_log(avctx, AV_LOG_INFO, "warning: modifier must be 0 or 1, got %i\n", modifier);
251  break;
252  case 0x71: // set uniq flag
253  uniq = 1;
254  break;
255  case 0x72: //toggle mode
256  mode = !mode;
257  break;
258  case 0x73: //end-of-frame
259  done = 1;
260  break;
261  case 0x74: //skip some blocks
262  skip = bytestream2_get_byte(&s->gb);
263  if ((blocks + skip) >= s->blocks)
264  break;
265  blocks += skip;
266  x += skip * 8;
267  while(x >= s->width) {
268  x -= s->width;
269  y += 8;
270  }
271  break;
272  default:
273  av_log(avctx, AV_LOG_INFO, "warning: unknown escape 0x%02X\n", idx);
274  }
275  } else { //handle one block
276  int code;
277  int cf;
278  int angle = 0;
279  uint8_t Y[4]; // luma samples of block
280  int tx = 0, ty = 0; //coords of subblock
281  int chroma = 0;
282  if (mode || uniq) {
283  uniq = 0;
284  cf = 1;
285  chroma = 0;
286  } else {
287  cf = 0;
288  if (idx) {
289  chroma = bytestream2_get_byte(&s->gb);
290  }
291  }
292  for (i = 0; i < 4; i++) { // for every subblock
293  code = (idx >> (6 - i*2)) & 3; //extract 2 bits
294  if(!code) //skip subblock
295  continue;
296  if(cf) {
297  chroma = bytestream2_get_byte(&s->gb);
298  }
299  tx = x + block_coords[i * 2];
300  ty = y + block_coords[(i * 2) + 1];
301  switch(code) {
302  case 1:
303  tmp = bytestream2_get_byte(&s->gb);
304 
305  angle = angle_by_index[(tmp >> 6) & 0x3];
306 
307  Y[0] = tmp & 0x3F;
308  Y[1] = Y[0];
309 
310  if (angle) {
311  Y[2] = Y[0]+1;
312  if (Y[2] > 0x3F)
313  Y[2] = 0x3F;
314  Y[3] = Y[2];
315  } else {
316  Y[2] = Y[0];
317  Y[3] = Y[0];
318  }
319  break;
320 
321  case 2:
322  if (modifier) { // unpack four luma samples
323  tmp = bytestream2_get_be24(&s->gb);
324 
325  Y[0] = (tmp >> 18) & 0x3F;
326  Y[1] = (tmp >> 12) & 0x3F;
327  Y[2] = (tmp >> 6) & 0x3F;
328  Y[3] = tmp & 0x3F;
329  angle = 16;
330  } else { // retrieve luma samples from codebook
331  tmp = bytestream2_get_be16(&s->gb);
332 
333  angle = (tmp >> 12) & 0xF;
334  tmp &= 0xFFF;
335  tmp <<= 2;
336  Y[0] = s->ulti_codebook[tmp];
337  Y[1] = s->ulti_codebook[tmp + 1];
338  Y[2] = s->ulti_codebook[tmp + 2];
339  Y[3] = s->ulti_codebook[tmp + 3];
340  }
341  break;
342 
343  case 3:
344  if (modifier) { // all 16 luma samples
345  uint8_t Luma[16];
346 
347  if (bytestream2_get_bytes_left(&s->gb) < 12)
348  goto err;
349  tmp = bytestream2_get_be24u(&s->gb);
350  Luma[0] = (tmp >> 18) & 0x3F;
351  Luma[1] = (tmp >> 12) & 0x3F;
352  Luma[2] = (tmp >> 6) & 0x3F;
353  Luma[3] = tmp & 0x3F;
354 
355  tmp = bytestream2_get_be24u(&s->gb);
356  Luma[4] = (tmp >> 18) & 0x3F;
357  Luma[5] = (tmp >> 12) & 0x3F;
358  Luma[6] = (tmp >> 6) & 0x3F;
359  Luma[7] = tmp & 0x3F;
360 
361  tmp = bytestream2_get_be24u(&s->gb);
362  Luma[8] = (tmp >> 18) & 0x3F;
363  Luma[9] = (tmp >> 12) & 0x3F;
364  Luma[10] = (tmp >> 6) & 0x3F;
365  Luma[11] = tmp & 0x3F;
366 
367  tmp = bytestream2_get_be24u(&s->gb);
368  Luma[12] = (tmp >> 18) & 0x3F;
369  Luma[13] = (tmp >> 12) & 0x3F;
370  Luma[14] = (tmp >> 6) & 0x3F;
371  Luma[15] = tmp & 0x3F;
372 
373  ulti_convert_yuv(s->frame, tx, ty, Luma, chroma);
374  } else {
375  if (bytestream2_get_bytes_left(&s->gb) < 4)
376  goto err;
377  tmp = bytestream2_get_byteu(&s->gb);
378  if(tmp & 0x80) {
379  angle = (tmp >> 4) & 0x7;
380  tmp = (tmp << 8) + bytestream2_get_byteu(&s->gb);
381  Y[0] = (tmp >> 6) & 0x3F;
382  Y[1] = tmp & 0x3F;
383  Y[2] = bytestream2_get_byteu(&s->gb) & 0x3F;
384  Y[3] = bytestream2_get_byteu(&s->gb) & 0x3F;
385  ulti_grad(s->frame, tx, ty, Y, chroma, angle); //draw block
386  } else { // some patterns
387  int f0 = tmp;
388  int f1 = bytestream2_get_byteu(&s->gb);
389  Y[0] = bytestream2_get_byteu(&s->gb) & 0x3F;
390  Y[1] = bytestream2_get_byteu(&s->gb) & 0x3F;
391  ulti_pattern(s->frame, tx, ty, f0, f1, Y[0], Y[1], chroma);
392  }
393  }
394  break;
395  }
396  if(code != 3)
397  ulti_grad(s->frame, tx, ty, Y, chroma, angle); // draw block
398  }
399  blocks++;
400  x += 8;
401  if(x >= s->width) {
402  x = 0;
403  y += 8;
404  }
405  }
406  }
407 
408  *got_frame = 1;
409  if ((ret = av_frame_ref(data, s->frame)) < 0)
410  return ret;
411 
412  return buf_size;
413 
414 err:
415  av_log(avctx, AV_LOG_ERROR,
416  "Insufficient data\n");
417  return AVERROR_INVALIDDATA;
418 }
419 
421  .name = "ultimotion",
422  .long_name = NULL_IF_CONFIG_SMALL("IBM UltiMotion"),
423  .type = AVMEDIA_TYPE_VIDEO,
424  .id = AV_CODEC_ID_ULTI,
425  .priv_data_size = sizeof(UltimotionDecodeContext),
427  .close = ulti_decode_end,
429  .capabilities = AV_CODEC_CAP_DR1,
430 };
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
This structure describes decoded (raw) audio or video data.
Definition: frame.h:218
static av_cold int ulti_decode_end(AVCodecContext *avctx)
Definition: ulti.c:65
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
int size
Definition: avcodec.h:1432
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1728
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
Definition: bytestream.h:133
AVCodec.
Definition: avcodec.h:3409
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:42
int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
Identical in function to av_frame_make_writable(), except it uses ff_get_buffer() to allocate the buf...
Definition: decode.c:1938
AVCodec ff_ulti_decoder
Definition: ulti.c:420
uint8_t
#define av_cold
Definition: attributes.h:82
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:189
#define Y
Definition: vf_boxblur.c:76
AVFrame * frame
Definition: ulti.c:40
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
Definition: frame.c:441
GetByteContext gb
Definition: ulti.c:42
static AVFrame * frame
uint8_t * data
Definition: avcodec.h:1431
#define av_log(a,...)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
static const uint16_t mask[17]
Definition: lzw.c:38
static av_always_inline void chroma(WaveformContext *s, AVFrame *in, AVFrame *out, int component, int intensity, int offset_y, int offset_x, int column, int mirror, int jobnr, int nb_jobs)
Definition: vf_waveform.c:1510
#define AVERROR(e)
Definition: error.h:43
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:202
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
static av_always_inline unsigned int bytestream2_get_bytes_left(GetByteContext *g)
Definition: bytestream.h:154
const char * name
Name of the codec implementation.
Definition: avcodec.h:3416
static const unsigned char ulti_codebook[16384]
Definition: ulti_cb.h:25
AVCodecContext * avctx
Definition: ulti.c:38
static const int angle_by_index[4]
Definition: ulti.c:76
int width
picture width / height.
Definition: avcodec.h:1691
#define s(width, name)
Definition: cbs_vp9.c:257
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
static int ulti_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: ulti.c:215
Libavcodec external API header.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:249
main external API structure.
Definition: avcodec.h:1519
void * buf
Definition: avisynth_c.h:690
static av_cold int ulti_decode_init(AVCodecContext *avctx)
Definition: ulti.c:45
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:68
const uint8_t * ulti_codebook
Definition: ulti.c:41
static void ulti_convert_yuv(AVFrame *frame, int x, int y, uint8_t *luma, int chroma)
Definition: ulti.c:95
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:232
common internal api header.
void * priv_data
Definition: avcodec.h:1546
static void ulti_grad(AVFrame *frame, int x, int y, uint8_t *Y, int chroma, int angle)
Definition: ulti.c:142
static void ulti_pattern(AVFrame *frame, int x, int y, int f0, int f1, int Y0, int Y1, int chroma)
Definition: ulti.c:119
static const uint8_t ulti_chromas[16]
Definition: ulti.c:89
static const int block_coords[8]
Definition: ulti.c:73
This structure stores compressed data.
Definition: avcodec.h:1408
mode
Use these values in ebur128_init (or'ed).
Definition: ebur128.h:83
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:960
static const uint8_t ulti_lumas[64]
Definition: ulti.c:79
static uint8_t tmp[11]
Definition: aes_ctr.c:26