FFmpeg
motionpixels.c
Go to the documentation of this file.
1 /*
2  * Motion Pixels Video Decoder
3  * Copyright (c) 2008 Gregory Montoir (cyx@users.sourceforge.net)
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 #include "libavutil/thread.h"
23 
24 #include "config.h"
25 
26 #include "avcodec.h"
27 #include "get_bits.h"
28 #include "bswapdsp.h"
29 #include "codec_internal.h"
30 #include "decode.h"
31 
32 #define MAX_HUFF_CODES 16
33 
34 #include "motionpixels_tablegen.h"
35 
36 typedef struct HuffCode {
37  uint8_t size;
38  uint8_t delta;
39 } HuffCode;
40 
41 typedef struct MotionPixelsContext {
45  uint8_t *changes_map;
52  uint8_t gradient_scale[3];
53  uint8_t *bswapbuf;
56 
58 {
60 
61  av_freep(&mp->changes_map);
62  av_freep(&mp->vpt);
63  av_freep(&mp->hpt);
64  av_freep(&mp->bswapbuf);
65  av_frame_free(&mp->frame);
66 
67  return 0;
68 }
69 
71 {
72  av_unused static AVOnce init_static_once = AV_ONCE_INIT;
74  int w4 = (avctx->width + 3) & ~3;
75  int h4 = (avctx->height + 3) & ~3;
76 
77  if(avctx->extradata_size < 2){
78  av_log(avctx, AV_LOG_ERROR, "extradata too small\n");
79  return AVERROR_INVALIDDATA;
80  }
81 
82  mp->avctx = avctx;
83  ff_bswapdsp_init(&mp->bdsp);
84  mp->changes_map = av_calloc(avctx->width, h4);
85  mp->offset_bits_len = av_log2(avctx->width * avctx->height) + 1;
86  mp->vpt = av_calloc(avctx->height, sizeof(*mp->vpt));
87  mp->hpt = av_calloc(h4 / 4, w4 / 4 * sizeof(*mp->hpt));
88  if (!mp->changes_map || !mp->vpt || !mp->hpt)
89  return AVERROR(ENOMEM);
90  avctx->pix_fmt = AV_PIX_FMT_RGB555;
91 
92  mp->frame = av_frame_alloc();
93  if (!mp->frame)
94  return AVERROR(ENOMEM);
95 
96 #if !CONFIG_HARDCODED_TABLES
97  ff_thread_once(&init_static_once, motionpixels_tableinit);
98 #endif
99 
100  return 0;
101 }
102 
103 static void mp_read_changes_map(MotionPixelsContext *mp, GetBitContext *gb, int count, int bits_len, int read_color)
104 {
105  uint16_t *pixels;
106  int offset, w, h, color = 0, x, y, i;
107 
108  while (count--) {
109  offset = get_bits_long(gb, mp->offset_bits_len);
110  w = get_bits(gb, bits_len) + 1;
111  h = get_bits(gb, bits_len) + 1;
112  if (read_color)
113  color = get_bits(gb, 15);
114  x = offset % mp->avctx->width;
115  y = offset / mp->avctx->width;
116  if (y >= mp->avctx->height)
117  continue;
118  w = FFMIN(w, mp->avctx->width - x);
119  h = FFMIN(h, mp->avctx->height - y);
120  pixels = (uint16_t *)&mp->frame->data[0][y * mp->frame->linesize[0] + x * 2];
121  while (h--) {
122  mp->changes_map[offset] = w;
123  if (read_color)
124  for (i = 0; i < w; ++i)
125  pixels[i] = color;
126  offset += mp->avctx->width;
127  pixels += mp->frame->linesize[0] / 2;
128  }
129  }
130 }
131 
133 {
134  while (get_bits1(gb)) {
135  ++size;
136  if (size > mp->max_codes_bits) {
137  av_log(mp->avctx, AV_LOG_ERROR, "invalid code size %d/%d\n", size, mp->max_codes_bits);
138  return AVERROR_INVALIDDATA;
139  }
140  if (mp_get_code(mp, gb, size) < 0)
141  return AVERROR_INVALIDDATA;
142  }
143  if (mp->current_codes_count >= mp->codes_count) {
144  av_log(mp->avctx, AV_LOG_ERROR, "too many codes\n");
145  return AVERROR_INVALIDDATA;
146  }
147 
148  mp->codes[mp->current_codes_count++].size = size;
149  return 0;
150 }
151 
153 {
154  if (mp->codes_count == 1) {
155  mp->codes[0].delta = get_bits(gb, 4);
156  } else {
157  int i;
158  int ret;
159 
160  mp->max_codes_bits = get_bits(gb, 4);
161  for (i = 0; i < mp->codes_count; ++i)
162  mp->codes[i].delta = get_bits(gb, 4);
163  mp->current_codes_count = 0;
164  if ((ret = mp_get_code(mp, gb, 0)) < 0)
165  return ret;
166  if (mp->current_codes_count < mp->codes_count) {
167  av_log(mp->avctx, AV_LOG_ERROR, "too few codes\n");
168  return AVERROR_INVALIDDATA;
169  }
170  }
171  return 0;
172 }
173 
174 static av_always_inline int mp_gradient(MotionPixelsContext *mp, int component, int v)
175 {
176  int delta;
177 
178  delta = (v - 7) * mp->gradient_scale[component];
179  mp->gradient_scale[component] = (v == 0 || v == 14) ? 2 : 1;
180  return delta;
181 }
182 
184 {
185  int color;
186 
187  color = *(uint16_t *)&mp->frame->data[0][y * mp->frame->linesize[0] + x * 2];
188  return mp_rgb_yuv_table[color];
189 }
190 
191 static void mp_set_rgb_from_yuv(MotionPixelsContext *mp, int x, int y, const YuvPixel *p)
192 {
193  int color;
194 
195  color = mp_yuv_to_rgb(p->y, p->v, p->u, 1);
196  *(uint16_t *)&mp->frame->data[0][y * mp->frame->linesize[0] + x * 2] = color;
197 }
198 
200 {
201  return mp->vlc.table ? get_vlc2(gb, mp->vlc.table, mp->max_codes_bits, 1)
202  : mp->codes[0].delta;
203 }
204 
206 {
207  YuvPixel p;
208  const int y0 = y * mp->avctx->width;
209  int w, i, x = 0;
210 
211  p = mp->vpt[y];
212  if (mp->changes_map[y0 + x] == 0) {
213  memset(mp->gradient_scale, 1, sizeof(mp->gradient_scale));
214  ++x;
215  }
216  while (x < mp->avctx->width) {
217  w = mp->changes_map[y0 + x];
218  if (w != 0) {
219  if ((y & 3) == 0) {
220  if (mp->changes_map[y0 + x + mp->avctx->width] < w ||
221  mp->changes_map[y0 + x + mp->avctx->width * 2] < w ||
222  mp->changes_map[y0 + x + mp->avctx->width * 3] < w) {
223  for (i = (x + 3) & ~3; i < x + w; i += 4) {
224  mp->hpt[((y / 4) * mp->avctx->width + i) / 4] = mp_get_yuv_from_rgb(mp, i, y);
225  }
226  }
227  }
228  x += w;
229  memset(mp->gradient_scale, 1, sizeof(mp->gradient_scale));
230  p = mp_get_yuv_from_rgb(mp, x - 1, y);
231  } else {
232  p.y += mp_gradient(mp, 0, mp_get_vlc(mp, gb));
233  p.y = av_clip_uintp2(p.y, 5);
234  if ((x & 3) == 0) {
235  if ((y & 3) == 0) {
236  p.v += mp_gradient(mp, 1, mp_get_vlc(mp, gb));
237  p.v = av_clip_intp2(p.v, 5);
238  p.u += mp_gradient(mp, 2, mp_get_vlc(mp, gb));
239  p.u = av_clip_intp2(p.u, 5);
240  mp->hpt[((y / 4) * mp->avctx->width + x) / 4] = p;
241  } else {
242  p.v = mp->hpt[((y / 4) * mp->avctx->width + x) / 4].v;
243  p.u = mp->hpt[((y / 4) * mp->avctx->width + x) / 4].u;
244  }
245  }
246  mp_set_rgb_from_yuv(mp, x, y, &p);
247  ++x;
248  }
249  }
250 }
251 
253 {
254  YuvPixel p;
255  int y, y0;
256 
257  av_assert1(mp->changes_map[0]);
258 
259  for (y = 0; y < mp->avctx->height; ++y) {
260  if (mp->changes_map[y * mp->avctx->width] != 0) {
261  memset(mp->gradient_scale, 1, sizeof(mp->gradient_scale));
262  p = mp_get_yuv_from_rgb(mp, 0, y);
263  } else {
264  p.y += mp_gradient(mp, 0, mp_get_vlc(mp, gb));
265  p.y = av_clip_uintp2(p.y, 5);
266  if ((y & 3) == 0) {
267  p.v += mp_gradient(mp, 1, mp_get_vlc(mp, gb));
268  p.v = av_clip_intp2(p.v, 5);
269  p.u += mp_gradient(mp, 2, mp_get_vlc(mp, gb));
270  p.u = av_clip_intp2(p.u, 5);
271  }
272  mp->vpt[y] = p;
273  mp_set_rgb_from_yuv(mp, 0, y, &p);
274  }
275  }
276  for (y0 = 0; y0 < 2; ++y0)
277  for (y = y0; y < mp->avctx->height; y += 2)
278  mp_decode_line(mp, gb, y);
279 }
280 
281 static int mp_decode_frame(AVCodecContext *avctx, AVFrame *rframe,
282  int *got_frame, AVPacket *avpkt)
283 {
284  const uint8_t *buf = avpkt->data;
285  int buf_size = avpkt->size;
286  MotionPixelsContext *mp = avctx->priv_data;
287  GetBitContext gb;
288  int i, count1, count2, sz, ret;
289 
290  if ((ret = ff_reget_buffer(avctx, mp->frame, 0)) < 0)
291  return ret;
292 
293  /* le32 bitstream msb first */
294  av_fast_padded_malloc(&mp->bswapbuf, &mp->bswapbuf_size, buf_size);
295  if (!mp->bswapbuf)
296  return AVERROR(ENOMEM);
297  mp->bdsp.bswap_buf((uint32_t *) mp->bswapbuf, (const uint32_t *) buf,
298  buf_size / 4);
299  if (buf_size & 3)
300  memcpy(mp->bswapbuf + (buf_size & ~3), buf + (buf_size & ~3), buf_size & 3);
301  init_get_bits(&gb, mp->bswapbuf, buf_size * 8);
302 
303  memset(mp->changes_map, 0, avctx->width * avctx->height);
304  for (i = !(avctx->extradata[1] & 2); i < 2; ++i) {
305  count1 = get_bits(&gb, 12);
306  count2 = get_bits(&gb, 12);
307  mp_read_changes_map(mp, &gb, count1, 8, i);
308  mp_read_changes_map(mp, &gb, count2, 4, i);
309  }
310 
311  mp->codes_count = get_bits(&gb, 4);
312  if (mp->codes_count == 0)
313  goto end;
314 
315  if (mp->changes_map[0] == 0) {
316  *(uint16_t *)mp->frame->data[0] = get_bits(&gb, 15);
317  mp->changes_map[0] = 1;
318  }
319  if (mp_read_codes_table(mp, &gb) < 0)
320  goto end;
321 
322  sz = get_bits(&gb, 18);
323  if (avctx->extradata[0] != 5)
324  sz += get_bits(&gb, 18);
325  if (sz == 0)
326  goto end;
327 
328  if (mp->codes_count > 1) {
329  /* The entries of the mp->codes array are sorted from right to left
330  * in the Huffman tree, hence -(int)sizeof(HuffCode). */
331  ret = ff_init_vlc_from_lengths(&mp->vlc, mp->max_codes_bits, mp->codes_count,
332  &mp->codes[mp->codes_count - 1].size, -(int)sizeof(HuffCode),
333  &mp->codes[mp->codes_count - 1].delta, -(int)sizeof(HuffCode), 1,
334  0, 0, avctx);
335  if (ret < 0)
336  goto end;
337  }
339  ff_free_vlc(&mp->vlc);
340 
341 end:
342  if ((ret = av_frame_ref(rframe, mp->frame)) < 0)
343  return ret;
344  *got_frame = 1;
345  return buf_size;
346 }
347 
349  .p.name = "motionpixels",
350  CODEC_LONG_NAME("Motion Pixels video"),
351  .p.type = AVMEDIA_TYPE_VIDEO,
352  .p.id = AV_CODEC_ID_MOTIONPIXELS,
353  .priv_data_size = sizeof(MotionPixelsContext),
354  .init = mp_decode_init,
355  .close = mp_decode_end,
357  .p.capabilities = AV_CODEC_CAP_DR1,
358  .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
359 };
YuvPixel::y
int8_t y
Definition: motionpixels_tablegen.h:30
bswapdsp.h
FF_CODEC_CAP_INIT_CLEANUP
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
Definition: codec_internal.h:42
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
YuvPixel
Definition: motionpixels_tablegen.h:29
color
Definition: vf_paletteuse.c:601
thread.h
av_clip_uintp2
#define av_clip_uintp2
Definition: common.h:119
get_bits_long
static unsigned int get_bits_long(GetBitContext *s, int n)
Read 0-32 bits.
Definition: get_bits.h:546
MotionPixelsContext::gradient_scale
uint8_t gradient_scale[3]
Definition: motionpixels.c:52
av_unused
#define av_unused
Definition: attributes.h:131
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:116
mp
static double mp(int i, double w0, double r)
Definition: af_atilt.c:60
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:325
w
uint8_t w
Definition: llviddspenc.c:38
AVPacket::data
uint8_t * data
Definition: packet.h:374
MotionPixelsContext::max_codes_bits
int max_codes_bits
Definition: motionpixels.c:48
FFCodec
Definition: codec_internal.h:119
init_get_bits
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
Definition: get_bits.h:649
HuffCode::delta
uint8_t delta
Definition: motionpixels.c:38
get_bits
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:379
MotionPixelsContext::offset_bits_len
int offset_bits_len
Definition: motionpixels.c:46
FFCodec::p
AVCodec p
The public AVCodec.
Definition: codec_internal.h:123
GetBitContext
Definition: get_bits.h:61
mp_decode_init
static av_cold int mp_decode_init(AVCodecContext *avctx)
Definition: motionpixels.c:70
mp_read_changes_map
static void mp_read_changes_map(MotionPixelsContext *mp, GetBitContext *gb, int count, int bits_len, int read_color)
Definition: motionpixels.c:103
av_frame_alloc
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:104
mp_yuv_to_rgb
static int mp_yuv_to_rgb(int y, int v, int u, int clip_rgb)
Definition: motionpixels_tablegen.h:33
ff_thread_once
static int ff_thread_once(char *control, void(*routine)(void))
Definition: thread.h:184
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
av_cold
#define av_cold
Definition: attributes.h:90
MotionPixelsContext::frame
AVFrame * frame
Definition: motionpixels.c:43
mp_get_yuv_from_rgb
static YuvPixel mp_get_yuv_from_rgb(MotionPixelsContext *mp, int x, int y)
Definition: motionpixels.c:183
HuffCode::size
uint8_t size
Definition: motionpixels.c:37
AVCodecContext::extradata_size
int extradata_size
Definition: avcodec.h:500
FF_CODEC_DECODE_CB
#define FF_CODEC_DECODE_CB(func)
Definition: codec_internal.h:298
init
int(* init)(AVBSFContext *ctx)
Definition: dts2pts_bsf.c:363
MotionPixelsContext::bswapbuf
uint8_t * bswapbuf
Definition: motionpixels.c:53
decode.h
get_bits.h
MotionPixelsContext::bdsp
BswapDSPContext bdsp
Definition: motionpixels.c:44
CODEC_LONG_NAME
#define CODEC_LONG_NAME(str)
Definition: codec_internal.h:264
motionpixels_tableinit
static av_cold void motionpixels_tableinit(void)
Definition: motionpixels_tablegen.h:85
AV_ONCE_INIT
#define AV_ONCE_INIT
Definition: thread.h:182
ff_bswapdsp_init
av_cold void ff_bswapdsp_init(BswapDSPContext *c)
Definition: bswapdsp.c:49
av_clip_intp2
#define av_clip_intp2
Definition: common.h:116
mp_decode_frame_helper
static void mp_decode_frame_helper(MotionPixelsContext *mp, GetBitContext *gb)
Definition: motionpixels.c:252
AV_CODEC_ID_MOTIONPIXELS
@ AV_CODEC_ID_MOTIONPIXELS
Definition: codec_id.h:171
mp_gradient
static av_always_inline int mp_gradient(MotionPixelsContext *mp, int component, int v)
Definition: motionpixels.c:174
get_bits1
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:498
ff_init_vlc_from_lengths
int ff_init_vlc_from_lengths(VLC *vlc, int nb_bits, int nb_codes, const int8_t *lens, int lens_wrap, const void *symbols, int symbols_wrap, int symbols_size, int offset, int flags, void *logctx)
Build VLC decoding tables suitable for use with get_vlc2()
Definition: vlc.c:328
mp_decode_frame
static int mp_decode_frame(AVCodecContext *avctx, AVFrame *rframe, int *got_frame, AVPacket *avpkt)
Definition: motionpixels.c:281
get_vlc2
static av_always_inline int get_vlc2(GetBitContext *s, const VLCElem *table, int bits, int max_depth)
Parse a vlc code.
Definition: get_bits.h:787
AVOnce
#define AVOnce
Definition: thread.h:181
MotionPixelsContext
Definition: motionpixels.c:41
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:375
av_frame_ref
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:353
codec_internal.h
size
int size
Definition: twinvq_data.h:10344
color
static const uint32_t color[16+AV_CLASS_CATEGORY_NB]
Definition: log.c:94
MotionPixelsContext::avctx
AVCodecContext * avctx
Definition: motionpixels.c:42
MotionPixelsContext::current_codes_count
int current_codes_count
Definition: motionpixels.c:47
motionpixels_tablegen.h
MotionPixelsContext::vlc
VLC vlc
Definition: motionpixels.c:50
MotionPixelsContext::changes_map
uint8_t * changes_map
Definition: motionpixels.c:45
mp_get_vlc
static av_always_inline int mp_get_vlc(MotionPixelsContext *mp, GetBitContext *gb)
Definition: motionpixels.c:199
MAX_HUFF_CODES
#define MAX_HUFF_CODES
Definition: motionpixels.c:32
offset
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf offset
Definition: writing_filters.txt:86
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
AVCodecContext::extradata
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:499
mp_rgb_yuv_table
static YuvPixel mp_rgb_yuv_table[1<< 15]
Definition: motionpixels_tablegen.h:51
mp_get_code
static int mp_get_code(MotionPixelsContext *mp, GetBitContext *gb, int size)
Definition: motionpixels.c:132
av_assert1
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
delta
float delta
Definition: vorbis_enc_data.h:430
av_fast_padded_malloc
void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
Same behaviour av_fast_malloc but the buffer has additional AV_INPUT_BUFFER_PADDING_SIZE at the end w...
Definition: utils.c:49
AV_PIX_FMT_RGB555
#define AV_PIX_FMT_RGB555
Definition: pixfmt.h:447
av_always_inline
#define av_always_inline
Definition: attributes.h:49
mp_set_rgb_from_yuv
static void mp_set_rgb_from_yuv(MotionPixelsContext *mp, int x, int y, const YuvPixel *p)
Definition: motionpixels.c:191
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
MotionPixelsContext::codes
HuffCode codes[MAX_HUFF_CODES]
Definition: motionpixels.c:49
mp_read_codes_table
static int mp_read_codes_table(MotionPixelsContext *mp, GetBitContext *gb)
Definition: motionpixels.c:152
AVCodec::name
const char * name
Name of the codec implementation.
Definition: codec.h:211
AVCodecContext::height
int height
Definition: avcodec.h:571
AVCodecContext::pix_fmt
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:608
av_calloc
void * av_calloc(size_t nmemb, size_t size)
Definition: mem.c:272
ff_free_vlc
void ff_free_vlc(VLC *vlc)
Definition: vlc.c:375
avcodec.h
ff_reget_buffer
int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Identical in function to ff_get_buffer(), except it reuses the existing buffer if available.
Definition: decode.c:1568
ret
ret
Definition: filter_design.txt:187
AVCodecContext
main external API structure.
Definition: avcodec.h:398
MotionPixelsContext::hpt
YuvPixel * hpt
Definition: motionpixels.c:51
VLC
Definition: vlc.h:31
mp_decode_line
static void mp_decode_line(MotionPixelsContext *mp, GetBitContext *gb, int y)
Definition: motionpixels.c:205
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
YuvPixel::v
int8_t v
Definition: motionpixels_tablegen.h:30
MotionPixelsContext::bswapbuf_size
int bswapbuf_size
Definition: motionpixels.c:54
AVPacket
This structure stores compressed data.
Definition: packet.h:351
AVCodecContext::priv_data
void * priv_data
Definition: avcodec.h:425
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:34
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:571
HuffCode
Definition: motionpixels.c:36
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:61
BswapDSPContext
Definition: bswapdsp.h:24
h
h
Definition: vp9dsp_template.c:2038
YuvPixel::u
int8_t u
Definition: motionpixels_tablegen.h:30
MotionPixelsContext::codes_count
int codes_count
Definition: motionpixels.c:47
av_log2
int av_log2(unsigned v)
Definition: intmath.c:26
MotionPixelsContext::vpt
YuvPixel * vpt
Definition: motionpixels.c:51
ff_motionpixels_decoder
const FFCodec ff_motionpixels_decoder
Definition: motionpixels.c:348
mp_decode_end
static av_cold int mp_decode_end(AVCodecContext *avctx)
Definition: motionpixels.c:57