FFmpeg  2.1.1
vf_geq.c
Go to the documentation of this file.
1 /*
2  * Copyright (C) 2006 Michael Niedermayer <michaelni@gmx.at>
3  * Copyright (C) 2012 Clément Bœsch <u pkh me>
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 2 of the License, or
10  * (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
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License along
18  * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20  */
21 
22 /**
23  * @file
24  * Generic equation change filter
25  * Originally written by Michael Niedermayer for the MPlayer project, and
26  * ported by Clément Bœsch for FFmpeg.
27  */
28 
29 #include "libavutil/avstring.h"
30 #include "libavutil/eval.h"
31 #include "libavutil/opt.h"
32 #include "libavutil/pixdesc.h"
33 #include "internal.h"
34 
35 typedef struct {
36  const AVClass *class;
37  AVExpr *e[4]; ///< expressions for each plane
38  char *expr_str[4+3]; ///< expression strings for each plane
39  AVFrame *picref; ///< current input buffer
40  int hsub, vsub; ///< chroma subsampling
41  int planes; ///< number of planes
42  int is_rgb;
43 } GEQContext;
44 
45 enum { Y = 0, U, V, A, G, B, R };
46 
47 #define OFFSET(x) offsetof(GEQContext, x)
48 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
49 
50 static const AVOption geq_options[] = {
51  { "lum_expr", "set luminance expression", OFFSET(expr_str[Y]), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },
52  { "lum", "set luminance expression", OFFSET(expr_str[Y]), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },
53  { "cb_expr", "set chroma blue expression", OFFSET(expr_str[U]), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },
54  { "cb", "set chroma blue expression", OFFSET(expr_str[U]), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },
55  { "cr_expr", "set chroma red expression", OFFSET(expr_str[V]), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },
56  { "cr", "set chroma red expression", OFFSET(expr_str[V]), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },
57  { "alpha_expr", "set alpha expression", OFFSET(expr_str[A]), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },
58  { "a", "set alpha expression", OFFSET(expr_str[A]), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },
59  { "red_expr", "set red expression", OFFSET(expr_str[R]), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },
60  { "r", "set red expression", OFFSET(expr_str[R]), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },
61  { "green_expr", "set green expression", OFFSET(expr_str[G]), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },
62  { "g", "set green expression", OFFSET(expr_str[G]), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },
63  { "blue_expr", "set blue expression", OFFSET(expr_str[B]), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },
64  { "b", "set blue expression", OFFSET(expr_str[B]), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },
65  {NULL},
66 };
67 
69 
70 static inline double getpix(void *priv, double x, double y, int plane)
71 {
72  int xi, yi;
73  GEQContext *geq = priv;
74  AVFrame *picref = geq->picref;
75  const uint8_t *src = picref->data[plane];
76  const int linesize = picref->linesize[plane];
77  const int w = (plane == 1 || plane == 2) ? FF_CEIL_RSHIFT(picref->width, geq->hsub) : picref->width;
78  const int h = (plane == 1 || plane == 2) ? FF_CEIL_RSHIFT(picref->height, geq->vsub) : picref->height;
79 
80  if (!src)
81  return 0;
82 
83  xi = x = av_clipf(x, 0, w - 2);
84  yi = y = av_clipf(y, 0, h - 2);
85 
86  x -= xi;
87  y -= yi;
88 
89  return (1-y)*((1-x)*src[xi + yi * linesize] + x*src[xi + 1 + yi * linesize])
90  + y *((1-x)*src[xi + (yi+1) * linesize] + x*src[xi + 1 + (yi+1) * linesize]);
91 }
92 
93 //TODO: cubic interpolate
94 //TODO: keep the last few frames
95 static double lum(void *priv, double x, double y) { return getpix(priv, x, y, 0); }
96 static double cb(void *priv, double x, double y) { return getpix(priv, x, y, 1); }
97 static double cr(void *priv, double x, double y) { return getpix(priv, x, y, 2); }
98 static double alpha(void *priv, double x, double y) { return getpix(priv, x, y, 3); }
99 
100 static const char *const var_names[] = { "X", "Y", "W", "H", "N", "SW", "SH", "T", NULL };
102 
104 {
105  GEQContext *geq = ctx->priv;
106  int plane, ret = 0;
107 
108  if (!geq->expr_str[Y] && !geq->expr_str[G] && !geq->expr_str[B] && !geq->expr_str[R]) {
109  av_log(ctx, AV_LOG_ERROR, "A luminance or RGB expression is mandatory\n");
110  ret = AVERROR(EINVAL);
111  goto end;
112  }
113  geq->is_rgb = !geq->expr_str[Y];
114 
115  if ((geq->expr_str[Y] || geq->expr_str[U] || geq->expr_str[V]) && (geq->expr_str[G] || geq->expr_str[B] || geq->expr_str[R])) {
116  av_log(ctx, AV_LOG_ERROR, "Either YCbCr or RGB but not both must be specified\n");
117  ret = AVERROR(EINVAL);
118  goto end;
119  }
120 
121  if (!geq->expr_str[U] && !geq->expr_str[V]) {
122  /* No chroma at all: fallback on luma */
123  geq->expr_str[U] = av_strdup(geq->expr_str[Y]);
124  geq->expr_str[V] = av_strdup(geq->expr_str[Y]);
125  } else {
126  /* One chroma unspecified, fallback on the other */
127  if (!geq->expr_str[U]) geq->expr_str[U] = av_strdup(geq->expr_str[V]);
128  if (!geq->expr_str[V]) geq->expr_str[V] = av_strdup(geq->expr_str[U]);
129  }
130 
131  if (!geq->expr_str[A])
132  geq->expr_str[A] = av_strdup("255");
133  if (!geq->expr_str[G])
134  geq->expr_str[G] = av_strdup("g(X,Y)");
135  if (!geq->expr_str[B])
136  geq->expr_str[B] = av_strdup("b(X,Y)");
137  if (!geq->expr_str[R])
138  geq->expr_str[R] = av_strdup("r(X,Y)");
139 
140  if (geq->is_rgb ?
141  (!geq->expr_str[G] || !geq->expr_str[B] || !geq->expr_str[R])
142  :
143  (!geq->expr_str[U] || !geq->expr_str[V] || !geq->expr_str[A])) {
144  ret = AVERROR(ENOMEM);
145  goto end;
146  }
147 
148  for (plane = 0; plane < 4; plane++) {
149  static double (*p[])(void *, double, double) = { lum, cb, cr, alpha };
150  static const char *const func2_yuv_names[] = { "lum", "cb", "cr", "alpha", "p", NULL };
151  static const char *const func2_rgb_names[] = { "g", "b", "r", "alpha", "p", NULL };
152  const char *const *func2_names = geq->is_rgb ? func2_rgb_names : func2_yuv_names;
153  double (*func2[])(void *, double, double) = { lum, cb, cr, alpha, p[plane], NULL };
154 
155  ret = av_expr_parse(&geq->e[plane], geq->expr_str[plane < 3 && geq->is_rgb ? plane+4 : plane], var_names,
156  NULL, NULL, func2_names, func2, 0, ctx);
157  if (ret < 0)
158  break;
159  }
160 
161 end:
162  return ret;
163 }
164 
166 {
167  GEQContext *geq = ctx->priv;
168  static const enum PixelFormat yuv_pix_fmts[] = {
174  };
175  static const enum PixelFormat rgb_pix_fmts[] = {
178  };
179  if (geq->is_rgb) {
180  ff_set_common_formats(ctx, ff_make_format_list(rgb_pix_fmts));
181  } else
182  ff_set_common_formats(ctx, ff_make_format_list(yuv_pix_fmts));
183  return 0;
184 }
185 
186 static int geq_config_props(AVFilterLink *inlink)
187 {
188  GEQContext *geq = inlink->dst->priv;
189  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
190 
191  geq->hsub = desc->log2_chroma_w;
192  geq->vsub = desc->log2_chroma_h;
193  geq->planes = desc->nb_components;
194  return 0;
195 }
196 
198 {
199  int plane;
200  GEQContext *geq = inlink->dst->priv;
201  AVFilterLink *outlink = inlink->dst->outputs[0];
202  AVFrame *out;
203  double values[VAR_VARS_NB] = {
204  [VAR_N] = inlink->frame_count,
205  [VAR_T] = in->pts == AV_NOPTS_VALUE ? NAN : in->pts * av_q2d(inlink->time_base),
206  };
207 
208  geq->picref = in;
209  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
210  if (!out) {
211  av_frame_free(&in);
212  return AVERROR(ENOMEM);
213  }
214  av_frame_copy_props(out, in);
215 
216  for (plane = 0; plane < geq->planes && out->data[plane]; plane++) {
217  int x, y;
218  uint8_t *dst = out->data[plane];
219  const int linesize = out->linesize[plane];
220  const int w = (plane == 1 || plane == 2) ? FF_CEIL_RSHIFT(inlink->w, geq->hsub) : inlink->w;
221  const int h = (plane == 1 || plane == 2) ? FF_CEIL_RSHIFT(inlink->h, geq->vsub) : inlink->h;
222 
223  values[VAR_W] = w;
224  values[VAR_H] = h;
225  values[VAR_SW] = w / (double)inlink->w;
226  values[VAR_SH] = h / (double)inlink->h;
227 
228  for (y = 0; y < h; y++) {
229  values[VAR_Y] = y;
230  for (x = 0; x < w; x++) {
231  values[VAR_X] = x;
232  dst[x] = av_expr_eval(geq->e[plane], values, geq);
233  }
234  dst += linesize;
235  }
236  }
237 
238  av_frame_free(&geq->picref);
239  return ff_filter_frame(outlink, out);
240 }
241 
243 {
244  int i;
245  GEQContext *geq = ctx->priv;
246 
247  for (i = 0; i < FF_ARRAY_ELEMS(geq->e); i++)
248  av_expr_free(geq->e[i]);
249 }
250 
251 static const AVFilterPad geq_inputs[] = {
252  {
253  .name = "default",
254  .type = AVMEDIA_TYPE_VIDEO,
255  .config_props = geq_config_props,
256  .filter_frame = geq_filter_frame,
257  },
258  { NULL }
259 };
260 
261 static const AVFilterPad geq_outputs[] = {
262  {
263  .name = "default",
264  .type = AVMEDIA_TYPE_VIDEO,
265  },
266  { NULL }
267 };
268 
270  .name = "geq",
271  .description = NULL_IF_CONFIG_SMALL("Apply generic equation to each pixel."),
272  .priv_size = sizeof(GEQContext),
273  .init = geq_init,
274  .uninit = geq_uninit,
276  .inputs = geq_inputs,
277  .outputs = geq_outputs,
278  .priv_class = &geq_class,
280 };
Definition: vf_geq.c:45
static const AVFilterPad geq_inputs[]
Definition: vf_geq.c:251
This structure describes decoded (raw) audio or video data.
Definition: frame.h:96
AVOption.
Definition: opt.h:253
double av_expr_eval(AVExpr *e, const double *const_values, void *opaque)
Evaluate a previously parsed expression.
Definition: eval.c:692
const char * name
Filter name.
Definition: avfilter.h:468
void * priv
private data for use by the filter
Definition: avfilter.h:648
static const AVFilterPad outputs[]
Definition: af_ashowinfo.c:111
char * av_strdup(const char *s) av_malloc_attrib
Duplicate the string s.
Definition: mem.c:256
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
static av_cold void geq_uninit(AVFilterContext *ctx)
Definition: vf_geq.c:242
static double getpix(void *priv, double x, double y, int plane)
Definition: vf_geq.c:70
planar YUV 4:2:2, 16bpp, (1 Cr &amp; Cb sample per 2x1 Y samples)
Definition: avcodec.h:4538
static const char *const var_names[]
Definition: vf_geq.c:100
Definition: vf_geq.c:45
void av_log(void *avcl, int level, const char *fmt,...) av_printf_format(3
Send the specified message to the log if the level is less than or equal to the current av_log_level...
static const AVFilterPad geq_outputs[]
Definition: vf_geq.c:261
int av_expr_parse(AVExpr **expr, const char *s, const char *const *const_names, const char *const *func1_names, double(*const *funcs1)(void *, double), const char *const *func2_names, double(*const *funcs2)(void *, double, double), int log_offset, void *log_ctx)
Parse an expression.
Definition: eval.c:641
static int query_formats(AVFilterContext *ctx)
Definition: af_aconvert.c:79
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:109
planar YUV 4:4:4 32bpp, (1 Cr &amp; Cb sample per 1x1 Y &amp; A samples)
Definition: avcodec.h:4693
void av_expr_free(AVExpr *e)
Free a parsed expression previously created with av_expr_parse().
Definition: eval.c:303
Pixel format.
Definition: avcodec.h:4533
#define av_cold
Definition: avcodec.h:653
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:68
Y , 8bpp.
Definition: avcodec.h:4542
static enum AVPixelFormat rgb_pix_fmts[]
Definition: jpeg2000dec.c:213
AVFrame * picref
current input buffer
Definition: vf_geq.c:39
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:294
#define AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
Some filters support a generic &quot;enable&quot; expression option that can be used to enable or disable a fil...
Definition: avfilter.h:445
const char * name
Pad name.
Definition: internal.h:66
static int geq_query_formats(AVFilterContext *ctx)
Definition: vf_geq.c:165
static double cb(void *priv, double x, double y)
Definition: vf_geq.c:96
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1118
uint8_t
static av_cold int uninit(AVCodecContext *avctx)
Definition: crystalhd.c:334
#define Y
Definition: vf_boxblur.c:76
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only &quot;metadata&quot; fields from src to dst.
Definition: frame.c:446
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:67
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:182
Definition: eval.c:141
#define FF_CEIL_RSHIFT(a, b)
Definition: avcodec.h:916
static double av_q2d(AVRational a)
Convert rational to double.
Definition: rational.h:69
planar YUV 4:2:2 24bpp, (1 Cr &amp; Cb sample per 2x1 Y &amp; A samples)
Definition: avcodec.h:4694
planar YUV 4:2:0, 20bpp, (1 Cr &amp; Cb sample per 2x2 Y &amp; A samples)
Definition: avcodec.h:4571
void ff_set_common_formats(AVFilterContext *ctx, AVFilterFormats *formats)
A helper for query_formats() which sets all links to the same list of formats.
Definition: formats.c:531
#define A(x)
Definition: vp56_arith.h:28
Definition: vf_blend.c:65
A filter pad used for either input or output.
Definition: internal.h:60
#define U(x)
Definition: vp56_arith.h:37
static double alpha(void *priv, double x, double y)
Definition: vf_geq.c:98
int width
width and height of the video frame
Definition: frame.h:145
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: avcodec.h:4147
int planes
number of planes
Definition: vf_geq.c:41
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));returnNULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method!=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt)>2){ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc){av_free(ac);returnNULL;}returnac;}in_planar=av_sample_fmt_is_planar(in_fmt);out_planar=av_sample_fmt_is_planar(out_fmt);if(in_planar==out_planar){ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar?ac->channels:1;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);ff_audio_convert_init_arm(ac);ff_audio_convert_init_x86(ac);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_dlog(ac->avr,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> in
AVExpr * e[4]
expressions for each plane
Definition: vf_geq.c:37
static int geq_config_props(AVFilterLink *inlink)
Definition: vf_geq.c:186
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:77
#define OFFSET(x)
Definition: vf_geq.c:47
planar GBRA 4:4:4:4 32bpp
Definition: avcodec.h:4712
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:151
planar YUV 4:1:1, 12bpp, (1 Cr &amp; Cb sample per 4x1 Y samples)
Definition: avcodec.h:4541
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:123
static const AVOption geq_options[]
Definition: vf_geq.c:50
Definition: vf_geq.c:45
#define FF_ARRAY_ELEMS(a)
Definition: avcodec.h:929
#define V
Definition: options_table.h:35
uint8_t nb_components
The number of components each pixel has, (1-4)
Definition: pixdesc.h:59
float y
Definition: vf_blend.c:65
ret
Definition: avfilter.c:961
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:1938
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:642
planar YUV 4:2:0, 12bpp, (1 Cr &amp; Cb sample per 2x2 Y samples)
Definition: avcodec.h:4534
planar YUV 4:4:0 (1 Cr &amp; Cb sample per 1x2 Y samples)
Definition: avcodec.h:4569
AVS_Value src
Definition: avisynth_c.h:523
static enum AVPixelFormat yuv_pix_fmts[]
Definition: jpeg2000dec.c:215
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:57
char * expr_str[4+3]
expression strings for each plane
Definition: vf_geq.c:38
int hsub
Definition: vf_geq.c:40
#define FLAGS
Definition: vf_geq.c:48
planar GBR 4:4:4 24bpp
Definition: avcodec.h:4640
static av_cold int geq_init(AVFilterContext *ctx)
Definition: vf_geq.c:103
Describe the class of an AVClass context structure.
Definition: log.h:50
Filter definition.
Definition: avfilter.h:464
static const AVFilterPad inputs[]
Definition: af_ashowinfo.c:102
AVFilter avfilter_vf_geq
Definition: vf_geq.c:269
planar YUV 4:4:4, 24bpp, (1 Cr &amp; Cb sample per 1x1 Y samples)
Definition: avcodec.h:4539
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:124
static int flags
Definition: cpu.c:45
#define PixelFormat
Definition: avcodec.h:4990
static double lum(void *priv, double x, double y)
Definition: vf_geq.c:95
Definition: vf_blend.c:65
Definition: vf_blend.c:65
#define NAN
Definition: math.h:28
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));returnNULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method!=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt)>2){ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc){av_free(ac);returnNULL;}returnac;}in_planar=av_sample_fmt_is_planar(in_fmt);out_planar=av_sample_fmt_is_planar(out_fmt);if(in_planar==out_planar){ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar?ac->channels:1;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);ff_audio_convert_init_arm(ac);ff_audio_convert_init_x86(ac);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_dlog(ac->avr,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> out
#define AVFILTER_DEFINE_CLASS(fname)
Definition: internal.h:301
int is_rgb
Definition: vf_geq.c:42
static int geq_filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_geq.c:197
#define AVERROR(e)
An instance of a filter.
Definition: avfilter.h:627
int height
Definition: frame.h:145
internal API functions
static double cr(void *priv, double x, double y)
Definition: vf_geq.c:97
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:107
int vsub
chroma subsampling
Definition: vf_geq.c:40
planar YUV 4:1:0, 9bpp, (1 Cr &amp; Cb sample per 4x4 Y samples)
Definition: avcodec.h:4540
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avcodec.h:2278