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fic.c
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1 /*
2  * Mirillis FIC decoder
3  *
4  * Copyright (c) 2014 Konstantin Shishkov
5  * Copyright (c) 2014 Derek Buitenhuis
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/common.h"
25 #include "libavutil/opt.h"
26 #include "avcodec.h"
27 #include "internal.h"
28 #include "get_bits.h"
29 #include "golomb.h"
30 
31 typedef struct FICThreadContext {
32  DECLARE_ALIGNED(16, int16_t, block)[64];
34  int slice_h;
35  int src_size;
36  int y_off;
37  int p_frame;
39 
40 typedef struct FICContext {
41  AVClass *class;
45 
48 
49  const uint8_t *qmat;
50 
52 
55 
58 } FICContext;
59 
60 static const uint8_t fic_qmat_hq[64] = {
61  1, 2, 2, 2, 3, 3, 3, 4,
62  2, 2, 2, 3, 3, 3, 4, 4,
63  2, 2, 3, 3, 3, 4, 4, 4,
64  2, 2, 3, 3, 3, 4, 4, 5,
65  2, 3, 3, 3, 4, 4, 5, 6,
66  3, 3, 3, 4, 4, 5, 6, 7,
67  3, 3, 3, 4, 4, 5, 7, 7,
68  3, 3, 4, 4, 5, 7, 7, 7,
69 };
70 
71 static const uint8_t fic_qmat_lq[64] = {
72  1, 5, 6, 7, 8, 9, 9, 11,
73  5, 5, 7, 8, 9, 9, 11, 12,
74  6, 7, 8, 9, 9, 11, 11, 12,
75  7, 7, 8, 9, 9, 11, 12, 13,
76  7, 8, 9, 9, 10, 11, 13, 16,
77  8, 9, 9, 10, 11, 13, 16, 19,
78  8, 9, 9, 11, 12, 15, 18, 23,
79  9, 9, 11, 12, 15, 18, 23, 27
80 };
81 
82 static const uint8_t fic_header[7] = { 0, 0, 1, 'F', 'I', 'C', 'V' };
83 
84 #define FIC_HEADER_SIZE 27
85 #define CURSOR_OFFSET 59
86 
87 static av_always_inline void fic_idct(int16_t *blk, int step, int shift, int rnd)
88 {
89  const unsigned t0 = 27246 * blk[3 * step] + 18405 * blk[5 * step];
90  const unsigned t1 = 27246 * blk[5 * step] - 18405 * blk[3 * step];
91  const unsigned t2 = 6393 * blk[7 * step] + 32139 * blk[1 * step];
92  const unsigned t3 = 6393 * blk[1 * step] - 32139 * blk[7 * step];
93  const unsigned t4 = 5793U * ((int)(t2 + t0 + 0x800) >> 12);
94  const unsigned t5 = 5793U * ((int)(t3 + t1 + 0x800) >> 12);
95  const unsigned t6 = t2 - t0;
96  const unsigned t7 = t3 - t1;
97  const unsigned t8 = 17734 * blk[2 * step] - 42813 * blk[6 * step];
98  const unsigned t9 = 17734 * blk[6 * step] + 42814 * blk[2 * step];
99  const unsigned tA = (blk[0 * step] - blk[4 * step]) * 32768 + rnd;
100  const unsigned tB = (blk[0 * step] + blk[4 * step]) * 32768 + rnd;
101  blk[0 * step] = (int)( t4 + t9 + tB) >> shift;
102  blk[1 * step] = (int)( t6 + t7 + t8 + tA) >> shift;
103  blk[2 * step] = (int)( t6 - t7 - t8 + tA) >> shift;
104  blk[3 * step] = (int)( t5 - t9 + tB) >> shift;
105  blk[4 * step] = (int)( -t5 - t9 + tB) >> shift;
106  blk[5 * step] = (int)(-(t6 - t7) - t8 + tA) >> shift;
107  blk[6 * step] = (int)(-(t6 + t7) + t8 + tA) >> shift;
108  blk[7 * step] = (int)( -t4 + t9 + tB) >> shift;
109 }
110 
111 static void fic_idct_put(uint8_t *dst, int stride, int16_t *block)
112 {
113  int i, j;
114  int16_t *ptr;
115 
116  ptr = block;
117  fic_idct(ptr++, 8, 13, (1 << 12) + (1 << 17));
118  for (i = 1; i < 8; i++) {
119  fic_idct(ptr, 8, 13, 1 << 12);
120  ptr++;
121  }
122 
123  ptr = block;
124  for (i = 0; i < 8; i++) {
125  fic_idct(ptr, 1, 20, 0);
126  ptr += 8;
127  }
128 
129  ptr = block;
130  for (j = 0; j < 8; j++) {
131  for (i = 0; i < 8; i++)
132  dst[i] = av_clip_uint8(ptr[i]);
133  dst += stride;
134  ptr += 8;
135  }
136 }
138  uint8_t *dst, int stride, int16_t *block, int *is_p)
139 {
140  int i, num_coeff;
141 
142  /* Is it a skip block? */
143  if (get_bits1(gb)) {
144  *is_p = 1;
145  return 0;
146  }
147 
148  memset(block, 0, sizeof(*block) * 64);
149 
150  num_coeff = get_bits(gb, 7);
151  if (num_coeff > 64)
152  return AVERROR_INVALIDDATA;
153 
154  for (i = 0; i < num_coeff; i++) {
155  int v = get_se_golomb(gb);
156  if (v < -2048 || v > 2048)
157  return AVERROR_INVALIDDATA;
158  block[ff_zigzag_direct[i]] = v *
159  ctx->qmat[ff_zigzag_direct[i]];
160  }
161 
162  fic_idct_put(dst, stride, block);
163 
164  return 0;
165 }
166 
167 static int fic_decode_slice(AVCodecContext *avctx, void *tdata)
168 {
169  FICContext *ctx = avctx->priv_data;
170  FICThreadContext *tctx = tdata;
171  GetBitContext gb;
172  uint8_t *src = tctx->src;
173  int slice_h = tctx->slice_h;
174  int src_size = tctx->src_size;
175  int y_off = tctx->y_off;
176  int x, y, p, ret;
177 
178  ret = init_get_bits8(&gb, src, src_size);
179  if (ret < 0)
180  return ret;
181 
182  for (p = 0; p < 3; p++) {
183  int stride = ctx->frame->linesize[p];
184  uint8_t* dst = ctx->frame->data[p] + (y_off >> !!p) * stride;
185 
186  for (y = 0; y < (slice_h >> !!p); y += 8) {
187  for (x = 0; x < (ctx->aligned_width >> !!p); x += 8) {
188  int ret;
189 
190  if ((ret = fic_decode_block(ctx, &gb, dst + x, stride,
191  tctx->block, &tctx->p_frame)) != 0)
192  return ret;
193  }
194 
195  dst += 8 * stride;
196  }
197  }
198 
199  return 0;
200 }
201 
203  int size, uint8_t *alpha)
204 {
205  int i;
206 
207  for (i = 0; i < size; i++)
208  dst[i] += ((src[i] - dst[i]) * alpha[i]) >> 8;
209 }
210 
211 static void fic_draw_cursor(AVCodecContext *avctx, int cur_x, int cur_y)
212 {
213  FICContext *ctx = avctx->priv_data;
214  uint8_t *ptr = ctx->cursor_buf;
215  uint8_t *dstptr[3];
216  uint8_t planes[4][1024];
217  uint8_t chroma[3][256];
218  int i, j, p;
219 
220  /* Convert to YUVA444. */
221  for (i = 0; i < 1024; i++) {
222  planes[0][i] = (( 25 * ptr[0] + 129 * ptr[1] + 66 * ptr[2]) / 255) + 16;
223  planes[1][i] = ((-38 * ptr[0] + 112 * ptr[1] + -74 * ptr[2]) / 255) + 128;
224  planes[2][i] = ((-18 * ptr[0] + 112 * ptr[1] + -94 * ptr[2]) / 255) + 128;
225  planes[3][i] = ptr[3];
226 
227  ptr += 4;
228  }
229 
230  /* Subsample chroma. */
231  for (i = 0; i < 32; i += 2)
232  for (j = 0; j < 32; j += 2)
233  for (p = 0; p < 3; p++)
234  chroma[p][16 * (i / 2) + j / 2] = (planes[p + 1][32 * i + j ] +
235  planes[p + 1][32 * i + j + 1] +
236  planes[p + 1][32 * (i + 1) + j ] +
237  planes[p + 1][32 * (i + 1) + j + 1]) / 4;
238 
239  /* Seek to x/y pos of cursor. */
240  for (i = 0; i < 3; i++)
241  dstptr[i] = ctx->final_frame->data[i] +
242  (ctx->final_frame->linesize[i] * (cur_y >> !!i)) +
243  (cur_x >> !!i) + !!i;
244 
245  /* Copy. */
246  for (i = 0; i < FFMIN(32, avctx->height - cur_y) - 1; i += 2) {
247  int lsize = FFMIN(32, avctx->width - cur_x);
248  int csize = lsize / 2;
249 
250  fic_alpha_blend(dstptr[0],
251  planes[0] + i * 32, lsize, planes[3] + i * 32);
252  fic_alpha_blend(dstptr[0] + ctx->final_frame->linesize[0],
253  planes[0] + (i + 1) * 32, lsize, planes[3] + (i + 1) * 32);
254  fic_alpha_blend(dstptr[1],
255  chroma[0] + (i / 2) * 16, csize, chroma[2] + (i / 2) * 16);
256  fic_alpha_blend(dstptr[2],
257  chroma[1] + (i / 2) * 16, csize, chroma[2] + (i / 2) * 16);
258 
259  dstptr[0] += ctx->final_frame->linesize[0] * 2;
260  dstptr[1] += ctx->final_frame->linesize[1];
261  dstptr[2] += ctx->final_frame->linesize[2];
262  }
263 }
264 
265 static int fic_decode_frame(AVCodecContext *avctx, void *data,
266  int *got_frame, AVPacket *avpkt)
267 {
268  FICContext *ctx = avctx->priv_data;
269  uint8_t *src = avpkt->data;
270  int ret;
271  int slice, nslices;
272  int msize;
273  int tsize;
274  int cur_x, cur_y;
275  int skip_cursor = ctx->skip_cursor;
276  uint8_t *sdata;
277 
278  if ((ret = ff_reget_buffer(avctx, ctx->frame)) < 0)
279  return ret;
280 
281  /* Header + at least one slice (4) */
282  if (avpkt->size < FIC_HEADER_SIZE + 4) {
283  av_log(avctx, AV_LOG_ERROR, "Frame data is too small.\n");
284  return AVERROR_INVALIDDATA;
285  }
286 
287  /* Check for header. */
288  if (memcmp(src, fic_header, 7))
289  av_log(avctx, AV_LOG_WARNING, "Invalid FIC Header.\n");
290 
291  /* Is it a skip frame? */
292  if (src[17]) {
293  if (!ctx->final_frame) {
294  av_log(avctx, AV_LOG_WARNING, "Initial frame is skipped\n");
295  return AVERROR_INVALIDDATA;
296  }
297  goto skip;
298  }
299 
300  nslices = src[13];
301  if (!nslices) {
302  av_log(avctx, AV_LOG_ERROR, "Zero slices found.\n");
303  return AVERROR_INVALIDDATA;
304  }
305 
306  /* High or Low Quality Matrix? */
307  ctx->qmat = src[23] ? fic_qmat_hq : fic_qmat_lq;
308 
309  /* Skip cursor data. */
310  tsize = AV_RB24(src + 24);
311  if (tsize > avpkt->size - FIC_HEADER_SIZE) {
312  av_log(avctx, AV_LOG_ERROR,
313  "Packet is too small to contain cursor (%d vs %d bytes).\n",
314  tsize, avpkt->size - FIC_HEADER_SIZE);
315  return AVERROR_INVALIDDATA;
316  }
317 
318  if (!tsize || !AV_RL16(src + 37) || !AV_RL16(src + 39))
319  skip_cursor = 1;
320 
321  if (!skip_cursor && tsize < 32) {
322  av_log(avctx, AV_LOG_WARNING,
323  "Cursor data too small. Skipping cursor.\n");
324  skip_cursor = 1;
325  }
326 
327  /* Cursor position. */
328  cur_x = AV_RL16(src + 33);
329  cur_y = AV_RL16(src + 35);
330  if (!skip_cursor && (cur_x > avctx->width || cur_y > avctx->height)) {
331  av_log(avctx, AV_LOG_DEBUG,
332  "Invalid cursor position: (%d,%d). Skipping cursor.\n",
333  cur_x, cur_y);
334  skip_cursor = 1;
335  }
336 
337  if (!skip_cursor && (AV_RL16(src + 37) != 32 || AV_RL16(src + 39) != 32)) {
338  av_log(avctx, AV_LOG_WARNING,
339  "Invalid cursor size. Skipping cursor.\n");
340  skip_cursor = 1;
341  }
342 
343  if (!skip_cursor && avpkt->size < CURSOR_OFFSET + sizeof(ctx->cursor_buf)) {
344  skip_cursor = 1;
345  }
346 
347  /* Slice height for all but the last slice. */
348  ctx->slice_h = 16 * (ctx->aligned_height >> 4) / nslices;
349  if (ctx->slice_h % 16)
350  ctx->slice_h = FFALIGN(ctx->slice_h - 16, 16);
351 
352  /* First slice offset and remaining data. */
353  sdata = src + tsize + FIC_HEADER_SIZE + 4 * nslices;
354  msize = avpkt->size - nslices * 4 - tsize - FIC_HEADER_SIZE;
355 
356  if (msize <= 0) {
357  av_log(avctx, AV_LOG_ERROR, "Not enough frame data to decode.\n");
358  return AVERROR_INVALIDDATA;
359  }
360 
361  /* Allocate slice data. */
363  nslices * sizeof(ctx->slice_data[0]));
364  if (!ctx->slice_data_size) {
365  av_log(avctx, AV_LOG_ERROR, "Could not allocate slice data.\n");
366  return AVERROR(ENOMEM);
367  }
368  memset(ctx->slice_data, 0, nslices * sizeof(ctx->slice_data[0]));
369 
370  for (slice = 0; slice < nslices; slice++) {
371  unsigned slice_off = AV_RB32(src + tsize + FIC_HEADER_SIZE + slice * 4);
372  unsigned slice_size;
373  int y_off = ctx->slice_h * slice;
374  int slice_h = ctx->slice_h;
375 
376  /*
377  * Either read the slice size, or consume all data left.
378  * Also, special case the last slight height.
379  */
380  if (slice == nslices - 1) {
381  slice_size = msize;
382  slice_h = FFALIGN(avctx->height - ctx->slice_h * (nslices - 1), 16);
383  } else {
384  slice_size = AV_RB32(src + tsize + FIC_HEADER_SIZE + slice * 4 + 4);
385  if (slice_size < slice_off)
386  return AVERROR_INVALIDDATA;
387  }
388 
389  if (slice_size < slice_off || slice_size > msize)
390  continue;
391 
392  slice_size -= slice_off;
393 
394  ctx->slice_data[slice].src = sdata + slice_off;
395  ctx->slice_data[slice].src_size = slice_size;
396  ctx->slice_data[slice].slice_h = slice_h;
397  ctx->slice_data[slice].y_off = y_off;
398  }
399 
400  if ((ret = avctx->execute(avctx, fic_decode_slice, ctx->slice_data,
401  NULL, nslices, sizeof(ctx->slice_data[0]))) < 0)
402  return ret;
403 
404  ctx->frame->key_frame = 1;
406  for (slice = 0; slice < nslices; slice++) {
407  if (ctx->slice_data[slice].p_frame) {
408  ctx->frame->key_frame = 0;
410  break;
411  }
412  }
413  av_frame_free(&ctx->final_frame);
414  ctx->final_frame = av_frame_clone(ctx->frame);
415  if (!ctx->final_frame) {
416  av_log(avctx, AV_LOG_ERROR, "Could not clone frame buffer.\n");
417  return AVERROR(ENOMEM);
418  }
419 
420  /* Make sure we use a user-supplied buffer. */
421  if ((ret = ff_reget_buffer(avctx, ctx->final_frame)) < 0) {
422  av_log(avctx, AV_LOG_ERROR, "Could not make frame writable.\n");
423  return ret;
424  }
425 
426  /* Draw cursor. */
427  if (!skip_cursor) {
428  memcpy(ctx->cursor_buf, src + CURSOR_OFFSET, sizeof(ctx->cursor_buf));
429  fic_draw_cursor(avctx, cur_x, cur_y);
430  }
431 
432 skip:
433  *got_frame = 1;
434  if ((ret = av_frame_ref(data, ctx->final_frame)) < 0)
435  return ret;
436 
437  return avpkt->size;
438 }
439 
441 {
442  FICContext *ctx = avctx->priv_data;
443 
444  av_freep(&ctx->slice_data);
445  av_frame_free(&ctx->final_frame);
446  av_frame_free(&ctx->frame);
447 
448  return 0;
449 }
450 
452 {
453  FICContext *ctx = avctx->priv_data;
454 
455  /* Initialize various context values */
456  ctx->avctx = avctx;
457  ctx->aligned_width = FFALIGN(avctx->width, 16);
458  ctx->aligned_height = FFALIGN(avctx->height, 16);
459 
460  avctx->pix_fmt = AV_PIX_FMT_YUV420P;
461  avctx->bits_per_raw_sample = 8;
462 
463  ctx->frame = av_frame_alloc();
464  if (!ctx->frame)
465  return AVERROR(ENOMEM);
466 
467  return 0;
468 }
469 
470 static const AVOption options[] = {
471 { "skip_cursor", "skip the cursor", offsetof(FICContext, skip_cursor), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM },
472 { NULL },
473 };
474 
475 static const AVClass fic_decoder_class = {
476  .class_name = "FIC decoder",
477  .item_name = av_default_item_name,
478  .option = options,
479  .version = LIBAVUTIL_VERSION_INT,
480 };
481 
483  .name = "fic",
484  .long_name = NULL_IF_CONFIG_SMALL("Mirillis FIC"),
485  .type = AVMEDIA_TYPE_VIDEO,
486  .id = AV_CODEC_ID_FIC,
487  .priv_data_size = sizeof(FICContext),
490  .close = fic_decode_close,
492  .priv_class = &fic_decoder_class,
493 };
#define NULL
Definition: coverity.c:32
static av_always_inline void fic_alpha_blend(uint8_t *dst, uint8_t *src, int size, uint8_t *alpha)
Definition: fic.c:202
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
static int shift(int a, int b)
Definition: sonic.c:82
#define t9
Definition: regdef.h:54
This structure describes decoded (raw) audio or video data.
Definition: frame.h:268
AVOption.
Definition: opt.h:246
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
static int get_se_golomb(GetBitContext *gb)
read signed exp golomb code.
Definition: golomb.h:237
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:381
int slice_h
Definition: fic.c:54
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
int size
Definition: avcodec.h:1467
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:191
const uint8_t * qmat
Definition: fic.c:49
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1764
AVFrame * final_frame
Definition: fic.c:44
int aligned_height
Definition: fic.c:53
#define t8
Definition: regdef.h:53
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:2781
int num_slices
Definition: fic.c:54
#define blk(i)
Definition: sha.c:185
int aligned_width
Definition: fic.c:53
#define src
Definition: vp8dsp.c:254
AVCodec.
Definition: avcodec.h:3455
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_RL16
Definition: bytestream.h:87
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:1966
static av_cold int fic_decode_close(AVCodecContext *avctx)
Definition: fic.c:440
static int16_t block[64]
Definition: dct.c:115
#define t7
Definition: regdef.h:35
int skip_cursor
Definition: fic.c:57
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
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
AVOptions.
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:443
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_RB32
Definition: bytestream.h:87
int src_size
Definition: fic.c:35
#define t0
Definition: regdef.h:28
static const uint8_t fic_header[7]
Definition: fic.c:82
#define DECLARE_ALIGNED(n, t, v)
Declare a variable that is aligned in memory.
Definition: mem.h:112
uint8_t * data
Definition: avcodec.h:1466
bitstream reader API header.
ptrdiff_t size
Definition: opengl_enc.c:101
#define FFALIGN(x, a)
Definition: macros.h:48
#define av_log(a,...)
#define U(x)
Definition: vp56_arith.h:37
Definition: fic.c:40
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
static void fic_idct_put(uint8_t *dst, int stride, int16_t *block)
Definition: fic.c:111
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:1511
#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 const uint8_t fic_qmat_lq[64]
Definition: fic.c:71
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
#define t1
Definition: regdef.h:29
const char * name
Name of the codec implementation.
Definition: avcodec.h:3462
#define t3
Definition: regdef.h:31
static const struct @305 planes[]
AVCodec ff_fic_decoder
Definition: fic.c:482
enum AVPictureType cur_frame_type
Definition: fic.c:51
static const AVOption options[]
Definition: fic.c:470
void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size)
Allocate a buffer, reusing the given one if large enough.
Definition: mem.c:488
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:351
#define FFMIN(a, b)
Definition: common.h:96
static const AVClass fic_decoder_class
Definition: fic.c:475
int width
picture width / height.
Definition: avcodec.h:1727
AVFormatContext * ctx
Definition: movenc.c:48
static av_cold int fic_decode_init(AVCodecContext *avctx)
Definition: fic.c:451
int p_frame
Definition: fic.c:37
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:540
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: avcodec.h:1030
uint8_t * src
Definition: fic.c:33
Libavcodec external API header.
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_RB24
Definition: bytestream.h:87
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:299
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
Definition: get_bits.h:650
static const int16_t alpha[]
Definition: ilbcdata.h:55
#define AV_OPT_FLAG_VIDEO_PARAM
Definition: opt.h:279
main external API structure.
Definition: avcodec.h:1554
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:487
#define CURSOR_OFFSET
Definition: fic.c:85
Describe the class of an AVClass context structure.
Definition: log.h:67
int slice_data_size
Definition: fic.c:47
#define AV_OPT_FLAG_DECODING_PARAM
a generic parameter which can be set by the user for demuxing or decoding
Definition: opt.h:277
const uint8_t ff_zigzag_direct[64]
Definition: mathtables.c:98
int y_off
Definition: fic.c:36
AVPictureType
Definition: avutil.h:272
#define t5
Definition: regdef.h:33
FICThreadContext * slice_data
Definition: fic.c:46
static const uint8_t fic_qmat_hq[64]
Definition: fic.c:60
static av_always_inline void fic_idct(int16_t *blk, int step, int shift, int rnd)
Definition: fic.c:87
static int fic_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: fic.c:265
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:282
AVCodecContext * avctx
Definition: fic.c:42
int16_t block[64]
Definition: fic.c:32
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:105
int
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
common internal api header.
#define FIC_HEADER_SIZE
Definition: fic.c:84
common internal and external API header
#define t6
Definition: regdef.h:34
#define rnd()
Definition: checkasm.h:102
int slice_h
Definition: fic.c:34
static int fic_decode_block(FICContext *ctx, GetBitContext *gb, uint8_t *dst, int stride, int16_t *block, int *is_p)
Definition: fic.c:137
void * priv_data
Definition: avcodec.h:1581
#define t4
Definition: regdef.h:32
int(* execute)(struct AVCodecContext *c, int(*func)(struct AVCodecContext *c2, void *arg), void *arg2, int *ret, int count, int size)
The codec may call this to execute several independent things.
Definition: avcodec.h:2849
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:346
static void fic_draw_cursor(AVCodecContext *avctx, int cur_x, int cur_y)
Definition: fic.c:211
AVFrame * frame
Definition: fic.c:43
uint8_t cursor_buf[4096]
Definition: fic.c:56
#define av_freep(p)
#define av_always_inline
Definition: attributes.h:39
#define stride
static int fic_decode_slice(AVCodecContext *avctx, void *tdata)
Definition: fic.c:167
exp golomb vlc stuff
This structure stores compressed data.
Definition: avcodec.h:1443
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:970
#define t2
Definition: regdef.h:30
Predicted.
Definition: avutil.h:275