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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;
177 
178  init_get_bits(&gb, src, src_size * 8);
179 
180  for (p = 0; p < 3; p++) {
181  int stride = ctx->frame->linesize[p];
182  uint8_t* dst = ctx->frame->data[p] + (y_off >> !!p) * stride;
183 
184  for (y = 0; y < (slice_h >> !!p); y += 8) {
185  for (x = 0; x < (ctx->aligned_width >> !!p); x += 8) {
186  int ret;
187 
188  if ((ret = fic_decode_block(ctx, &gb, dst + x, stride,
189  tctx->block, &tctx->p_frame)) != 0)
190  return ret;
191  }
192 
193  dst += 8 * stride;
194  }
195  }
196 
197  return 0;
198 }
199 
201  int size, uint8_t *alpha)
202 {
203  int i;
204 
205  for (i = 0; i < size; i++)
206  dst[i] += ((src[i] - dst[i]) * alpha[i]) >> 8;
207 }
208 
209 static void fic_draw_cursor(AVCodecContext *avctx, int cur_x, int cur_y)
210 {
211  FICContext *ctx = avctx->priv_data;
212  uint8_t *ptr = ctx->cursor_buf;
213  uint8_t *dstptr[3];
214  uint8_t planes[4][1024];
215  uint8_t chroma[3][256];
216  int i, j, p;
217 
218  /* Convert to YUVA444. */
219  for (i = 0; i < 1024; i++) {
220  planes[0][i] = (( 25 * ptr[0] + 129 * ptr[1] + 66 * ptr[2]) / 255) + 16;
221  planes[1][i] = ((-38 * ptr[0] + 112 * ptr[1] + -74 * ptr[2]) / 255) + 128;
222  planes[2][i] = ((-18 * ptr[0] + 112 * ptr[1] + -94 * ptr[2]) / 255) + 128;
223  planes[3][i] = ptr[3];
224 
225  ptr += 4;
226  }
227 
228  /* Subsample chroma. */
229  for (i = 0; i < 32; i += 2)
230  for (j = 0; j < 32; j += 2)
231  for (p = 0; p < 3; p++)
232  chroma[p][16 * (i / 2) + j / 2] = (planes[p + 1][32 * i + j ] +
233  planes[p + 1][32 * i + j + 1] +
234  planes[p + 1][32 * (i + 1) + j ] +
235  planes[p + 1][32 * (i + 1) + j + 1]) / 4;
236 
237  /* Seek to x/y pos of cursor. */
238  for (i = 0; i < 3; i++)
239  dstptr[i] = ctx->final_frame->data[i] +
240  (ctx->final_frame->linesize[i] * (cur_y >> !!i)) +
241  (cur_x >> !!i) + !!i;
242 
243  /* Copy. */
244  for (i = 0; i < FFMIN(32, avctx->height - cur_y) - 1; i += 2) {
245  int lsize = FFMIN(32, avctx->width - cur_x);
246  int csize = lsize / 2;
247 
248  fic_alpha_blend(dstptr[0],
249  planes[0] + i * 32, lsize, planes[3] + i * 32);
250  fic_alpha_blend(dstptr[0] + ctx->final_frame->linesize[0],
251  planes[0] + (i + 1) * 32, lsize, planes[3] + (i + 1) * 32);
252  fic_alpha_blend(dstptr[1],
253  chroma[0] + (i / 2) * 16, csize, chroma[2] + (i / 2) * 16);
254  fic_alpha_blend(dstptr[2],
255  chroma[1] + (i / 2) * 16, csize, chroma[2] + (i / 2) * 16);
256 
257  dstptr[0] += ctx->final_frame->linesize[0] * 2;
258  dstptr[1] += ctx->final_frame->linesize[1];
259  dstptr[2] += ctx->final_frame->linesize[2];
260  }
261 }
262 
263 static int fic_decode_frame(AVCodecContext *avctx, void *data,
264  int *got_frame, AVPacket *avpkt)
265 {
266  FICContext *ctx = avctx->priv_data;
267  uint8_t *src = avpkt->data;
268  int ret;
269  int slice, nslices;
270  int msize;
271  int tsize;
272  int cur_x, cur_y;
273  int skip_cursor = ctx->skip_cursor;
274  uint8_t *sdata;
275 
276  if ((ret = ff_reget_buffer(avctx, ctx->frame)) < 0)
277  return ret;
278 
279  /* Header + at least one slice (4) */
280  if (avpkt->size < FIC_HEADER_SIZE + 4) {
281  av_log(avctx, AV_LOG_ERROR, "Frame data is too small.\n");
282  return AVERROR_INVALIDDATA;
283  }
284 
285  /* Check for header. */
286  if (memcmp(src, fic_header, 7))
287  av_log(avctx, AV_LOG_WARNING, "Invalid FIC Header.\n");
288 
289  /* Is it a skip frame? */
290  if (src[17]) {
291  if (!ctx->final_frame) {
292  av_log(avctx, AV_LOG_WARNING, "Initial frame is skipped\n");
293  return AVERROR_INVALIDDATA;
294  }
295  goto skip;
296  }
297 
298  nslices = src[13];
299  if (!nslices) {
300  av_log(avctx, AV_LOG_ERROR, "Zero slices found.\n");
301  return AVERROR_INVALIDDATA;
302  }
303 
304  /* High or Low Quality Matrix? */
305  ctx->qmat = src[23] ? fic_qmat_hq : fic_qmat_lq;
306 
307  /* Skip cursor data. */
308  tsize = AV_RB24(src + 24);
309  if (tsize > avpkt->size - FIC_HEADER_SIZE) {
310  av_log(avctx, AV_LOG_ERROR,
311  "Packet is too small to contain cursor (%d vs %d bytes).\n",
312  tsize, avpkt->size - FIC_HEADER_SIZE);
313  return AVERROR_INVALIDDATA;
314  }
315 
316  if (!tsize || !AV_RL16(src + 37) || !AV_RL16(src + 39))
317  skip_cursor = 1;
318 
319  if (!skip_cursor && tsize < 32) {
320  av_log(avctx, AV_LOG_WARNING,
321  "Cursor data too small. Skipping cursor.\n");
322  skip_cursor = 1;
323  }
324 
325  /* Cursor position. */
326  cur_x = AV_RL16(src + 33);
327  cur_y = AV_RL16(src + 35);
328  if (!skip_cursor && (cur_x > avctx->width || cur_y > avctx->height)) {
329  av_log(avctx, AV_LOG_DEBUG,
330  "Invalid cursor position: (%d,%d). Skipping cursor.\n",
331  cur_x, cur_y);
332  skip_cursor = 1;
333  }
334 
335  if (!skip_cursor && (AV_RL16(src + 37) != 32 || AV_RL16(src + 39) != 32)) {
336  av_log(avctx, AV_LOG_WARNING,
337  "Invalid cursor size. Skipping cursor.\n");
338  skip_cursor = 1;
339  }
340 
341  if (!skip_cursor && avpkt->size < CURSOR_OFFSET + sizeof(ctx->cursor_buf)) {
342  skip_cursor = 1;
343  }
344 
345  /* Slice height for all but the last slice. */
346  ctx->slice_h = 16 * (ctx->aligned_height >> 4) / nslices;
347  if (ctx->slice_h % 16)
348  ctx->slice_h = FFALIGN(ctx->slice_h - 16, 16);
349 
350  /* First slice offset and remaining data. */
351  sdata = src + tsize + FIC_HEADER_SIZE + 4 * nslices;
352  msize = avpkt->size - nslices * 4 - tsize - FIC_HEADER_SIZE;
353 
354  if (msize <= 0) {
355  av_log(avctx, AV_LOG_ERROR, "Not enough frame data to decode.\n");
356  return AVERROR_INVALIDDATA;
357  }
358 
359  /* Allocate slice data. */
361  nslices * sizeof(ctx->slice_data[0]));
362  if (!ctx->slice_data_size) {
363  av_log(avctx, AV_LOG_ERROR, "Could not allocate slice data.\n");
364  return AVERROR(ENOMEM);
365  }
366  memset(ctx->slice_data, 0, nslices * sizeof(ctx->slice_data[0]));
367 
368  for (slice = 0; slice < nslices; slice++) {
369  unsigned slice_off = AV_RB32(src + tsize + FIC_HEADER_SIZE + slice * 4);
370  unsigned slice_size;
371  int y_off = ctx->slice_h * slice;
372  int slice_h = ctx->slice_h;
373 
374  /*
375  * Either read the slice size, or consume all data left.
376  * Also, special case the last slight height.
377  */
378  if (slice == nslices - 1) {
379  slice_size = msize;
380  slice_h = FFALIGN(avctx->height - ctx->slice_h * (nslices - 1), 16);
381  } else {
382  slice_size = AV_RB32(src + tsize + FIC_HEADER_SIZE + slice * 4 + 4);
383  }
384 
385  if (slice_size < slice_off || slice_size > msize)
386  continue;
387 
388  slice_size -= slice_off;
389 
390  ctx->slice_data[slice].src = sdata + slice_off;
391  ctx->slice_data[slice].src_size = slice_size;
392  ctx->slice_data[slice].slice_h = slice_h;
393  ctx->slice_data[slice].y_off = y_off;
394  }
395 
396  if ((ret = avctx->execute(avctx, fic_decode_slice, ctx->slice_data,
397  NULL, nslices, sizeof(ctx->slice_data[0]))) < 0)
398  return ret;
399 
400  ctx->frame->key_frame = 1;
402  for (slice = 0; slice < nslices; slice++) {
403  if (ctx->slice_data[slice].p_frame) {
404  ctx->frame->key_frame = 0;
406  break;
407  }
408  }
409  av_frame_free(&ctx->final_frame);
410  ctx->final_frame = av_frame_clone(ctx->frame);
411  if (!ctx->final_frame) {
412  av_log(avctx, AV_LOG_ERROR, "Could not clone frame buffer.\n");
413  return AVERROR(ENOMEM);
414  }
415 
416  /* Make sure we use a user-supplied buffer. */
417  if ((ret = ff_reget_buffer(avctx, ctx->final_frame)) < 0) {
418  av_log(avctx, AV_LOG_ERROR, "Could not make frame writable.\n");
419  return ret;
420  }
421 
422  /* Draw cursor. */
423  if (!skip_cursor) {
424  memcpy(ctx->cursor_buf, src + CURSOR_OFFSET, sizeof(ctx->cursor_buf));
425  fic_draw_cursor(avctx, cur_x, cur_y);
426  }
427 
428 skip:
429  *got_frame = 1;
430  if ((ret = av_frame_ref(data, ctx->final_frame)) < 0)
431  return ret;
432 
433  return avpkt->size;
434 }
435 
437 {
438  FICContext *ctx = avctx->priv_data;
439 
440  av_freep(&ctx->slice_data);
441  av_frame_free(&ctx->final_frame);
442  av_frame_free(&ctx->frame);
443 
444  return 0;
445 }
446 
448 {
449  FICContext *ctx = avctx->priv_data;
450 
451  /* Initialize various context values */
452  ctx->avctx = avctx;
453  ctx->aligned_width = FFALIGN(avctx->width, 16);
454  ctx->aligned_height = FFALIGN(avctx->height, 16);
455 
456  avctx->pix_fmt = AV_PIX_FMT_YUV420P;
457  avctx->bits_per_raw_sample = 8;
458 
459  ctx->frame = av_frame_alloc();
460  if (!ctx->frame)
461  return AVERROR(ENOMEM);
462 
463  return 0;
464 }
465 
466 static const AVOption options[] = {
467 { "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 },
468 { NULL },
469 };
470 
471 static const AVClass fic_decoder_class = {
472  .class_name = "FIC decoder",
473  .item_name = av_default_item_name,
474  .option = options,
475  .version = LIBAVUTIL_VERSION_INT,
476 };
477 
479  .name = "fic",
480  .long_name = NULL_IF_CONFIG_SMALL("Mirillis FIC"),
481  .type = AVMEDIA_TYPE_VIDEO,
482  .id = AV_CODEC_ID_FIC,
483  .priv_data_size = sizeof(FICContext),
486  .close = fic_decode_close,
488  .priv_class = &fic_decoder_class,
489 };
#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:200
#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:226
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:1453
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:1750
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:2767
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:3441
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:436
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:1452
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:3448
#define t3
Definition: regdef.h:31
static const struct @305 planes[]
AVCodec ff_fic_decoder
Definition: fic.c:478
enum AVPictureType cur_frame_type
Definition: fic.c:51
static const AVOption options[]
Definition: fic.c:466
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:309
#define FFMIN(a, b)
Definition: common.h:96
static const AVClass fic_decoder_class
Definition: fic.c:471
int width
picture width / height.
Definition: avcodec.h:1713
AVFormatContext * ctx
Definition: movenc.c:48
static av_cold int fic_decode_init(AVCodecContext *avctx)
Definition: fic.c:447
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:1028
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:257
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:1540
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
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
Definition: get_bits.h:615
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:263
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:240
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:101
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:1567
#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:2835
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:304
static void fic_draw_cursor(AVCodecContext *avctx, int cur_x, int cur_y)
Definition: fic.c:209
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:1429
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:968
#define t2
Definition: regdef.h:30
Predicted.
Definition: avutil.h:275