FFmpeg
vf_mcdeint.c
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1 /*
2  * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License along
17  * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19  */
20 
21 /**
22  * @file
23  * Motion Compensation Deinterlacer
24  * Ported from MPlayer libmpcodecs/vf_mcdeint.c.
25  *
26  * Known Issues:
27  *
28  * The motion estimation is somewhat at the mercy of the input, if the
29  * input frames are created purely based on spatial interpolation then
30  * for example a thin black line or another random and not
31  * interpolateable pattern will cause problems.
32  * Note: completely ignoring the "unavailable" lines during motion
33  * estimation did not look any better, so the most obvious solution
34  * would be to improve tfields or penalize problematic motion vectors.
35  *
36  * If non iterative ME is used then snow currently ignores the OBMC
37  * window and as a result sometimes creates artifacts.
38  *
39  * Only past frames are used, we should ideally use future frames too,
40  * something like filtering the whole movie in forward and then
41  * backward direction seems like an interesting idea but the current
42  * filter framework is FAR from supporting such things.
43  *
44  * Combining the motion compensated image with the input image also is
45  * not as trivial as it seems, simple blindly taking even lines from
46  * one and odd ones from the other does not work at all as ME/MC
47  * sometimes has nothing in the previous frames which matches the
48  * current. The current algorithm has been found by trial and error
49  * and almost certainly can be improved...
50  */
51 
52 #include "libavutil/opt.h"
53 #include "libavcodec/avcodec.h"
54 #include "avfilter.h"
55 #include "internal.h"
56 #include "video.h"
57 
59  MODE_FAST = 0,
64 };
65 
67  PARITY_TFF = 0, ///< top field first
68  PARITY_BFF = 1, ///< bottom field first
69 };
70 
71 typedef struct MCDeintContext {
72  const AVClass *class;
73  int mode; ///< MCDeintMode
74  int parity; ///< MCDeintParity
75  int qp;
80 
81 #define OFFSET(x) offsetof(MCDeintContext, x)
82 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
83 #define CONST(name, help, val, u) { name, help, 0, AV_OPT_TYPE_CONST, {.i64=val}, INT_MIN, INT_MAX, FLAGS, .unit = u }
84 
85 static const AVOption mcdeint_options[] = {
86  { "mode", "set mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=MODE_FAST}, 0, MODE_NB-1, FLAGS, .unit="mode" },
87  CONST("fast", NULL, MODE_FAST, "mode"),
88  CONST("medium", NULL, MODE_MEDIUM, "mode"),
89  CONST("slow", NULL, MODE_SLOW, "mode"),
90  CONST("extra_slow", NULL, MODE_EXTRA_SLOW, "mode"),
91 
92  { "parity", "set the assumed picture field parity", OFFSET(parity), AV_OPT_TYPE_INT, {.i64=PARITY_BFF}, -1, 1, FLAGS, .unit = "parity" },
93  CONST("tff", "assume top field first", PARITY_TFF, "parity"),
94  CONST("bff", "assume bottom field first", PARITY_BFF, "parity"),
95 
96  { "qp", "set qp", OFFSET(qp), AV_OPT_TYPE_INT, {.i64=1}, INT_MIN, INT_MAX, FLAGS },
97  { NULL }
98 };
99 
100 AVFILTER_DEFINE_CLASS(mcdeint);
101 
103 {
104  AVFilterContext *ctx = inlink->dst;
105  MCDeintContext *mcdeint = ctx->priv;
106  const AVCodec *enc;
107  AVCodecContext *enc_ctx;
109  int ret;
110 
111  if (!(enc = avcodec_find_encoder(AV_CODEC_ID_SNOW))) {
112  av_log(ctx, AV_LOG_ERROR, "Snow encoder is not enabled in libavcodec\n");
113  return AVERROR(EINVAL);
114  }
115 
116  mcdeint->pkt = av_packet_alloc();
117  if (!mcdeint->pkt)
118  return AVERROR(ENOMEM);
119  mcdeint->frame_dec = av_frame_alloc();
120  if (!mcdeint->frame_dec)
121  return AVERROR(ENOMEM);
122  mcdeint->enc_ctx = avcodec_alloc_context3(enc);
123  if (!mcdeint->enc_ctx)
124  return AVERROR(ENOMEM);
125  enc_ctx = mcdeint->enc_ctx;
126  enc_ctx->width = inlink->w;
127  enc_ctx->height = inlink->h;
128  enc_ctx->time_base = (AVRational){1,25}; // meaningless
129  enc_ctx->gop_size = INT_MAX;
130  enc_ctx->max_b_frames = 0;
131  enc_ctx->pix_fmt = AV_PIX_FMT_YUV420P;
134  enc_ctx->global_quality = 1;
135  enc_ctx->me_cmp = enc_ctx->me_sub_cmp = FF_CMP_SAD;
136  enc_ctx->mb_cmp = FF_CMP_SSE;
137  av_dict_set(&opts, "memc_only", "1", 0);
138  av_dict_set(&opts, "no_bitstream", "1", 0);
139 
140  switch (mcdeint->mode) {
141  case MODE_EXTRA_SLOW:
142  enc_ctx->refs = 3;
143  case MODE_SLOW:
144  av_dict_set(&opts, "motion_est", "iter", 0);
145  case MODE_MEDIUM:
146  enc_ctx->flags |= AV_CODEC_FLAG_4MV;
147  enc_ctx->dia_size = 2;
148  case MODE_FAST:
149  enc_ctx->flags |= AV_CODEC_FLAG_QPEL;
150  }
151 
152  ret = avcodec_open2(enc_ctx, enc, &opts);
153  av_dict_free(&opts);
154  if (ret < 0)
155  return ret;
156 
157  return 0;
158 }
159 
161 {
162  MCDeintContext *mcdeint = ctx->priv;
163 
164  av_packet_free(&mcdeint->pkt);
165  avcodec_free_context(&mcdeint->enc_ctx);
166  av_frame_free(&mcdeint->frame_dec);
167 }
168 
170 {
171  MCDeintContext *mcdeint = inlink->dst->priv;
172  AVFilterLink *outlink = inlink->dst->outputs[0];
173  AVFrame *outpic, *frame_dec = mcdeint->frame_dec;
174  AVPacket *pkt = mcdeint->pkt;
175  int x, y, i, ret;
176 
177  outpic = ff_get_video_buffer(outlink, outlink->w, outlink->h);
178  if (!outpic) {
180  return AVERROR(ENOMEM);
181  }
182  av_frame_copy_props(outpic, inpic);
183  inpic->quality = mcdeint->qp * FF_QP2LAMBDA;
184 
185  ret = avcodec_send_frame(mcdeint->enc_ctx, inpic);
186  if (ret < 0) {
187  av_log(mcdeint->enc_ctx, AV_LOG_ERROR, "Error sending a frame for encoding\n");
188  goto end;
189  }
190  ret = avcodec_receive_packet(mcdeint->enc_ctx, pkt);
191  if (ret < 0) {
192  av_log(mcdeint->enc_ctx, AV_LOG_ERROR, "Error receiving a packet from encoding\n");
193  goto end;
194  }
196  ret = avcodec_receive_frame(mcdeint->enc_ctx, frame_dec);
197  if (ret < 0) {
198  av_log(mcdeint->enc_ctx, AV_LOG_ERROR, "Error receiving a frame from encoding\n");
199  goto end;
200  }
201 
202  for (i = 0; i < 3; i++) {
203  int is_chroma = !!i;
204  int w = AV_CEIL_RSHIFT(inlink->w, is_chroma);
205  int h = AV_CEIL_RSHIFT(inlink->h, is_chroma);
206  int fils = frame_dec->linesize[i];
207  int srcs = inpic ->linesize[i];
208  int dsts = outpic ->linesize[i];
209 
210  for (y = 0; y < h; y++) {
211  if ((y ^ mcdeint->parity) & 1) {
212  for (x = 0; x < w; x++) {
213  uint8_t *filp = &frame_dec->data[i][x + y*fils];
214  uint8_t *srcp = &inpic ->data[i][x + y*srcs];
215  uint8_t *dstp = &outpic ->data[i][x + y*dsts];
216 
217  if (y > 0 && y < h-1){
218  int is_edge = x < 3 || x > w-4;
219  int diff0 = filp[-fils] - srcp[-srcs];
220  int diff1 = filp[+fils] - srcp[+srcs];
221  int temp = filp[0];
222 
223 #define DELTA(j) av_clip(j, -x, w-1-x)
224 
225 #define GET_SCORE_EDGE(j)\
226  FFABS(srcp[-srcs+DELTA(-1+(j))] - srcp[+srcs+DELTA(-1-(j))])+\
227  FFABS(srcp[-srcs+DELTA(j) ] - srcp[+srcs+DELTA( -(j))])+\
228  FFABS(srcp[-srcs+DELTA(1+(j)) ] - srcp[+srcs+DELTA( 1-(j))])
229 
230 #define GET_SCORE(j)\
231  FFABS(srcp[-srcs-1+(j)] - srcp[+srcs-1-(j)])+\
232  FFABS(srcp[-srcs +(j)] - srcp[+srcs -(j)])+\
233  FFABS(srcp[-srcs+1+(j)] - srcp[+srcs+1-(j)])
234 
235 #define CHECK_EDGE(j)\
236  { int score = GET_SCORE_EDGE(j);\
237  if (score < spatial_score){\
238  spatial_score = score;\
239  diff0 = filp[-fils+DELTA(j)] - srcp[-srcs+DELTA(j)];\
240  diff1 = filp[+fils+DELTA(-(j))] - srcp[+srcs+DELTA(-(j))];\
241 
242 #define CHECK(j)\
243  { int score = GET_SCORE(j);\
244  if (score < spatial_score){\
245  spatial_score= score;\
246  diff0 = filp[-fils+(j)] - srcp[-srcs+(j)];\
247  diff1 = filp[+fils-(j)] - srcp[+srcs-(j)];\
248 
249  if (is_edge) {
250  int spatial_score = GET_SCORE_EDGE(0) - 1;
251  CHECK_EDGE(-1) CHECK_EDGE(-2) }} }}
252  CHECK_EDGE( 1) CHECK_EDGE( 2) }} }}
253  } else {
254  int spatial_score = GET_SCORE(0) - 1;
255  CHECK(-1) CHECK(-2) }} }}
256  CHECK( 1) CHECK( 2) }} }}
257  }
258 
259 
260  if (diff0 + diff1 > 0)
261  temp -= (diff0 + diff1 - FFABS(FFABS(diff0) - FFABS(diff1)) / 2) / 2;
262  else
263  temp -= (diff0 + diff1 + FFABS(FFABS(diff0) - FFABS(diff1)) / 2) / 2;
264  *filp = *dstp = temp > 255U ? ~(temp>>31) : temp;
265  } else {
266  *dstp = *filp;
267  }
268  }
269  }
270  }
271 
272  for (y = 0; y < h; y++) {
273  if (!((y ^ mcdeint->parity) & 1)) {
274  for (x = 0; x < w; x++) {
275  frame_dec->data[i][x + y*fils] =
276  outpic ->data[i][x + y*dsts] = inpic->data[i][x + y*srcs];
277  }
278  }
279  }
280  }
281  mcdeint->parity ^= 1;
282 
283 end:
286  if (ret < 0) {
287  av_frame_free(&outpic);
288  return ret;
289  }
290  return ff_filter_frame(outlink, outpic);
291 }
292 
293 static const AVFilterPad mcdeint_inputs[] = {
294  {
295  .name = "default",
296  .type = AVMEDIA_TYPE_VIDEO,
297  .filter_frame = filter_frame,
298  .config_props = config_props,
299  },
300 };
301 
303  .name = "mcdeint",
304  .description = NULL_IF_CONFIG_SMALL("Apply motion compensating deinterlacing."),
305  .priv_size = sizeof(MCDeintContext),
306  .uninit = uninit,
310  .priv_class = &mcdeint_class,
311 };
ff_get_video_buffer
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:112
av_packet_unref
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: packet.c:427
MCDeintContext::parity
int parity
MCDeintParity.
Definition: vf_mcdeint.c:74
AVCodec
AVCodec.
Definition: codec.h:187
avcodec_receive_packet
int avcodec_receive_packet(AVCodecContext *avctx, AVPacket *avpkt)
Read encoded data from the encoder.
Definition: encode.c:541
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
opt.h
MCDeintContext::pkt
AVPacket * pkt
Definition: vf_mcdeint.c:76
MODE_SLOW
@ MODE_SLOW
Definition: vf_mcdeint.c:61
MODE_NB
@ MODE_NB
Definition: vf_mcdeint.c:63
MODE_MEDIUM
@ MODE_MEDIUM
Definition: vf_mcdeint.c:60
AV_CODEC_FLAG_QSCALE
#define AV_CODEC_FLAG_QSCALE
Use fixed qscale.
Definition: avcodec.h:224
inlink
The exact code depends on how similar the blocks are and how related they are to the and needs to apply these operations to the correct inlink or outlink if there are several Macros are available to factor that when no extra processing is inlink
Definition: filter_design.txt:212
MODE_FAST
@ MODE_FAST
Definition: vf_mcdeint.c:59
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:160
avcodec_find_encoder
const AVCodec * avcodec_find_encoder(enum AVCodecID id)
Find a registered encoder with a matching codec ID.
Definition: allcodecs.c:968
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:375
w
uint8_t w
Definition: llviddspenc.c:38
AVOption
AVOption.
Definition: opt.h:346
FF_COMPLIANCE_EXPERIMENTAL
#define FF_COMPLIANCE_EXPERIMENTAL
Allow nonstandardized experimental things.
Definition: defs.h:62
AVDictionary
Definition: dict.c:34
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:170
video.h
PARITY_BFF
@ PARITY_BFF
bottom field first
Definition: vf_mcdeint.c:68
AV_CODEC_FLAG_4MV
#define AV_CODEC_FLAG_4MV
4 MV per MB allowed / advanced prediction for H.263.
Definition: avcodec.h:228
AVCodecContext::mb_cmp
int mb_cmp
macroblock comparison function (not supported yet)
Definition: avcodec.h:888
av_packet_free
void av_packet_free(AVPacket **pkt)
Free the packet, if the packet is reference counted, it will be unreferenced first.
Definition: packet.c:74
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:396
ff_filter_frame
return ff_filter_frame(outlink, outpic)
CHECK_EDGE
#define CHECK_EDGE(j)
AVCodecContext::refs
int refs
number of reference frames
Definition: avcodec.h:715
AVCodecContext::flags
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:502
AV_CODEC_FLAG_LOW_DELAY
#define AV_CODEC_FLAG_LOW_DELAY
Force low delay.
Definition: avcodec.h:334
FF_CMP_SSE
#define FF_CMP_SSE
Definition: avcodec.h:896
mcdeint_options
static const AVOption mcdeint_options[]
Definition: vf_mcdeint.c:85
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:33
av_frame_alloc
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:148
pkt
AVPacket * pkt
Definition: movenc.c:60
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
ff_video_default_filterpad
const AVFilterPad ff_video_default_filterpad[1]
An AVFilterPad array whose only entry has name "default" and is of type AVMEDIA_TYPE_VIDEO.
Definition: video.c:37
else
else
Definition: vf_mcdeint.c:253
avcodec_alloc_context3
AVCodecContext * avcodec_alloc_context3(const AVCodec *codec)
Allocate an AVCodecContext and set its fields to default values.
Definition: options.c:149
AVCodecContext::global_quality
int global_quality
Global quality for codecs which cannot change it per frame.
Definition: avcodec.h:1239
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:59
MCDeintParity
MCDeintParity
Definition: vf_mcdeint.c:66
avcodec_receive_frame
int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
Return decoded output data from a decoder or encoder (when the AV_CODEC_FLAG_RECON_FRAME flag is used...
Definition: avcodec.c:695
ctx
AVFormatContext * ctx
Definition: movenc.c:49
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:73
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:182
FFABS
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition: common.h:73
filp
* filp
Definition: vf_mcdeint.c:264
opts
AVDictionary * opts
Definition: movenc.c:51
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
NULL
#define NULL
Definition: coverity.c:32
av_frame_copy_props
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:709
inpic
av_frame_free & inpic
Definition: vf_mcdeint.c:285
CHECK
#define CHECK(j)
MCDeintContext
Definition: vf_mcdeint.c:71
avcodec_free_context
void avcodec_free_context(AVCodecContext **avctx)
Free the codec context and everything associated with it and write NULL to the provided pointer.
Definition: options.c:164
AVRational
Rational number (pair of numerator and denominator).
Definition: rational.h:58
avcodec_open2
int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
Initialize the AVCodecContext to use the given AVCodec.
Definition: avcodec.c:142
AVCodecContext::me_cmp
int me_cmp
motion estimation comparison function
Definition: avcodec.h:876
MODE_EXTRA_SLOW
@ MODE_EXTRA_SLOW
Definition: vf_mcdeint.c:62
AVCodecContext::time_base
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented.
Definition: avcodec.h:544
AV_CODEC_FLAG_QPEL
#define AV_CODEC_FLAG_QPEL
Use qpel MC.
Definition: avcodec.h:236
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:94
AVCodecContext::gop_size
int gop_size
the number of pictures in a group of pictures, or 0 for intra_only
Definition: avcodec.h:1031
MCDeintMode
MCDeintMode
Definition: vf_mcdeint.c:58
parity
mcdeint parity
Definition: vf_mcdeint.c:281
MCDeintContext::enc_ctx
AVCodecContext * enc_ctx
Definition: vf_mcdeint.c:78
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(mcdeint)
PARITY_TFF
@ PARITY_TFF
top field first
Definition: vf_mcdeint.c:67
AVCodecContext::me_sub_cmp
int me_sub_cmp
subpixel motion estimation comparison function
Definition: avcodec.h:882
GET_SCORE_EDGE
#define GET_SCORE_EDGE(j)
av_packet_alloc
AVPacket * av_packet_alloc(void)
Allocate an AVPacket and set its fields to default values.
Definition: packet.c:63
av_dict_free
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values.
Definition: dict.c:223
config_props
static int config_props(AVFilterLink *inlink)
Definition: vf_mcdeint.c:102
FF_CMP_SAD
#define FF_CMP_SAD
Definition: avcodec.h:895
internal.h
FILTER_SINGLE_PIXFMT
#define FILTER_SINGLE_PIXFMT(pix_fmt_)
Definition: internal.h:172
OFFSET
#define OFFSET(x)
Definition: vf_mcdeint.c:81
AV_CODEC_FLAG_RECON_FRAME
#define AV_CODEC_FLAG_RECON_FRAME
Request the encoder to output reconstructed frames, i.e. frames that would be produced by decoding th...
Definition: avcodec.h:264
ff_vf_mcdeint
const AVFilter ff_vf_mcdeint
Definition: vf_mcdeint.c:302
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:256
MCDeintContext::frame_dec
AVFrame * frame_dec
Definition: vf_mcdeint.c:77
AVCodecContext::dia_size
int dia_size
ME diamond size & shape.
Definition: avcodec.h:918
MCDeintContext::mode
int mode
MCDeintMode.
Definition: vf_mcdeint.c:73
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:39
AVCodecContext::height
int height
Definition: avcodec.h:618
avcodec_send_frame
int avcodec_send_frame(AVCodecContext *avctx, const AVFrame *frame)
Supply a raw video or audio frame to the encoder.
Definition: encode.c:508
AVCodecContext::pix_fmt
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:657
GET_SCORE
#define GET_SCORE(j)
MCDeintContext::qp
int qp
Definition: vf_mcdeint.c:75
avcodec.h
AVFilter
Filter definition.
Definition: avfilter.h:166
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *inpic)
Definition: vf_mcdeint.c:169
FLAGS
#define FLAGS
Definition: vf_mcdeint.c:82
if
if(ret< 0)
Definition: vf_mcdeint.c:286
ret
ret
Definition: filter_design.txt:187
AVCodecContext::strict_std_compliance
int strict_std_compliance
strictly follow the standard (MPEG-4, ...).
Definition: avcodec.h:1379
mcdeint_inputs
static const AVFilterPad mcdeint_inputs[]
Definition: vf_mcdeint.c:293
U
#define U(x)
Definition: vpx_arith.h:37
AVCodecContext
main external API structure.
Definition: avcodec.h:445
AV_CODEC_ID_SNOW
@ AV_CODEC_ID_SNOW
Definition: codec_id.h:263
mode
mode
Definition: ebur128.h:83
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:235
avfilter.h
CONST
#define CONST(name, help, val, u)
Definition: vf_mcdeint.c:83
temp
else temp
Definition: vf_mcdeint.c:263
AVFilterContext
An instance of a filter.
Definition: avfilter.h:407
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_mcdeint.c:160
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AVCodecContext::max_b_frames
int max_b_frames
maximum number of B-frames between non-B-frames Note: The output will be delayed by max_b_frames+1 re...
Definition: avcodec.h:795
AVPacket
This structure stores compressed data.
Definition: packet.h:501
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:183
av_dict_set
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:88
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:618
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:420
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
h
h
Definition: vp9dsp_template.c:2038
FF_QP2LAMBDA
#define FF_QP2LAMBDA
factor to convert from H.263 QP to lambda
Definition: avutil.h:227