FFmpeg
vf_colortemperature.c
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2021 Paul B Mahol
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (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 GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include <float.h>
22 
23 #include "libavutil/opt.h"
24 #include "libavutil/imgutils.h"
25 #include "avfilter.h"
26 #include "drawutils.h"
27 #include "formats.h"
28 #include "internal.h"
29 #include "video.h"
30 
31 #define R 0
32 #define G 1
33 #define B 2
34 
35 typedef struct ColorTemperatureContext {
36  const AVClass *class;
37 
38  float temperature;
39  float mix;
40  float preserve;
41 
42  float color[3];
43 
44  int step;
45  int depth;
46  uint8_t rgba_map[4];
47 
48  int (*do_slice)(AVFilterContext *s, void *arg,
49  int jobnr, int nb_jobs);
50 } ColorTemperatureContext;
51 
52 static float saturate(float input)
53 {
54  return av_clipf(input, 0.f, 1.f);
55 }
56 
57 static void kelvin2rgb(float k, float *rgb)
58 {
59  float kelvin = k / 100.0f;
60 
61  if (kelvin <= 66.0f) {
62  rgb[0] = 1.0f;
63  rgb[1] = saturate(0.39008157876901960784f * logf(kelvin) - 0.63184144378862745098f);
64  } else {
65  const float t = fmaxf(kelvin - 60.0f, 0.0f);
66  rgb[0] = saturate(1.29293618606274509804f * powf(t, -0.1332047592f));
67  rgb[1] = saturate(1.12989086089529411765f * powf(t, -0.0755148492f));
68  }
69 
70  if (kelvin >= 66.0f)
71  rgb[2] = 1.0f;
72  else if (kelvin <= 19.0f)
73  rgb[2] = 0.0f;
74  else
75  rgb[2] = saturate(0.54320678911019607843f * logf(kelvin - 10.0f) - 1.19625408914f);
76 }
77 
78 static float lerpf(float v0, float v1, float f)
79 {
80  return v0 + (v1 - v0) * f;
81 }
82 
83 #define PROCESS() \
84  nr = r * color[0]; \
85  ng = g * color[1]; \
86  nb = b * color[2]; \
87  \
88  nr = lerpf(r, nr, mix); \
89  ng = lerpf(g, ng, mix); \
90  nb = lerpf(b, nb, mix); \
91  \
92  l0 = (FFMAX3(r, g, b) + FFMIN3(r, g, b)) + FLT_EPSILON; \
93  l1 = (FFMAX3(nr, ng, nb) + FFMIN3(nr, ng, nb)) + FLT_EPSILON; \
94  l = l0 / l1; \
95  \
96  r = nr * l; \
97  g = ng * l; \
98  b = nb * l; \
99  \
100  nr = lerpf(nr, r, preserve); \
101  ng = lerpf(ng, g, preserve); \
102  nb = lerpf(nb, b, preserve);
103 
104 static int temperature_slice8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
105 {
106  ColorTemperatureContext *s = ctx->priv;
107  AVFrame *frame = arg;
108  const int width = frame->width;
109  const int height = frame->height;
110  const float mix = s->mix;
111  const float preserve = s->preserve;
112  const float *color = s->color;
113  const int slice_start = (height * jobnr) / nb_jobs;
114  const int slice_end = (height * (jobnr + 1)) / nb_jobs;
115  const int glinesize = frame->linesize[0];
116  const int blinesize = frame->linesize[1];
117  const int rlinesize = frame->linesize[2];
118  uint8_t *gptr = frame->data[0] + slice_start * glinesize;
119  uint8_t *bptr = frame->data[1] + slice_start * blinesize;
120  uint8_t *rptr = frame->data[2] + slice_start * rlinesize;
121 
122  for (int y = slice_start; y < slice_end; y++) {
123  for (int x = 0; x < width; x++) {
124  float g = gptr[x];
125  float b = bptr[x];
126  float r = rptr[x];
127  float nr, ng, nb;
128  float l0, l1, l;
129 
130  PROCESS()
131 
132  gptr[x] = av_clip_uint8(ng);
133  bptr[x] = av_clip_uint8(nb);
134  rptr[x] = av_clip_uint8(nr);
135  }
136 
137  gptr += glinesize;
138  bptr += blinesize;
139  rptr += rlinesize;
140  }
141 
142  return 0;
143 }
144 
145 static int temperature_slice16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
146 {
147  ColorTemperatureContext *s = ctx->priv;
148  AVFrame *frame = arg;
149  const int depth = s->depth;
150  const int width = frame->width;
151  const int height = frame->height;
152  const float preserve = s->preserve;
153  const float mix = s->mix;
154  const float *color = s->color;
155  const int slice_start = (height * jobnr) / nb_jobs;
156  const int slice_end = (height * (jobnr + 1)) / nb_jobs;
157  const int glinesize = frame->linesize[0] / sizeof(uint16_t);
158  const int blinesize = frame->linesize[1] / sizeof(uint16_t);
159  const int rlinesize = frame->linesize[2] / sizeof(uint16_t);
160  uint16_t *gptr = (uint16_t *)frame->data[0] + slice_start * glinesize;
161  uint16_t *bptr = (uint16_t *)frame->data[1] + slice_start * blinesize;
162  uint16_t *rptr = (uint16_t *)frame->data[2] + slice_start * rlinesize;
163 
164  for (int y = slice_start; y < slice_end; y++) {
165  for (int x = 0; x < width; x++) {
166  float g = gptr[x];
167  float b = bptr[x];
168  float r = rptr[x];
169  float nr, ng, nb;
170  float l0, l1, l;
171 
172  PROCESS()
173 
174  gptr[x] = av_clip_uintp2_c(ng, depth);
175  bptr[x] = av_clip_uintp2_c(nb, depth);
176  rptr[x] = av_clip_uintp2_c(nr, depth);
177  }
178 
179  gptr += glinesize;
180  bptr += blinesize;
181  rptr += rlinesize;
182  }
183 
184  return 0;
185 }
186 
187 static int temperature_slice8p(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
188 {
189  ColorTemperatureContext *s = ctx->priv;
190  AVFrame *frame = arg;
191  const int step = s->step;
192  const int width = frame->width;
193  const int height = frame->height;
194  const float mix = s->mix;
195  const float preserve = s->preserve;
196  const float *color = s->color;
197  const uint8_t roffset = s->rgba_map[R];
198  const uint8_t goffset = s->rgba_map[G];
199  const uint8_t boffset = s->rgba_map[B];
200  const int slice_start = (height * jobnr) / nb_jobs;
201  const int slice_end = (height * (jobnr + 1)) / nb_jobs;
202  const int linesize = frame->linesize[0];
203  uint8_t *ptr = frame->data[0] + slice_start * linesize;
204 
205  for (int y = slice_start; y < slice_end; y++) {
206  for (int x = 0; x < width; x++) {
207  float g = ptr[x * step + goffset];
208  float b = ptr[x * step + boffset];
209  float r = ptr[x * step + roffset];
210  float nr, ng, nb;
211  float l0, l1, l;
212 
213  PROCESS()
214 
215  ptr[x * step + goffset] = av_clip_uint8(ng);
216  ptr[x * step + boffset] = av_clip_uint8(nb);
217  ptr[x * step + roffset] = av_clip_uint8(nr);
218  }
219 
220  ptr += linesize;
221  }
222 
223  return 0;
224 }
225 
226 static int temperature_slice16p(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
227 {
228  ColorTemperatureContext *s = ctx->priv;
229  AVFrame *frame = arg;
230  const int step = s->step;
231  const int depth = s->depth;
232  const int width = frame->width;
233  const int height = frame->height;
234  const float preserve = s->preserve;
235  const float mix = s->mix;
236  const float *color = s->color;
237  const uint8_t roffset = s->rgba_map[R];
238  const uint8_t goffset = s->rgba_map[G];
239  const uint8_t boffset = s->rgba_map[B];
240  const int slice_start = (height * jobnr) / nb_jobs;
241  const int slice_end = (height * (jobnr + 1)) / nb_jobs;
242  const int linesize = frame->linesize[0] / sizeof(uint16_t);
243  uint16_t *ptr = (uint16_t *)frame->data[0] + slice_start * linesize;
244 
245  for (int y = slice_start; y < slice_end; y++) {
246  for (int x = 0; x < width; x++) {
247  float g = ptr[x * step + goffset];
248  float b = ptr[x * step + boffset];
249  float r = ptr[x * step + roffset];
250  float nr, ng, nb;
251  float l0, l1, l;
252 
253  PROCESS()
254 
255  ptr[x * step + goffset] = av_clip_uintp2_c(ng, depth);
256  ptr[x * step + boffset] = av_clip_uintp2_c(nb, depth);
257  ptr[x * step + roffset] = av_clip_uintp2_c(nr, depth);
258  }
259 
260  ptr += linesize;
261  }
262 
263  return 0;
264 }
265 
266 static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
267 {
268  AVFilterContext *ctx = inlink->dst;
269  ColorTemperatureContext *s = ctx->priv;
270 
271  kelvin2rgb(s->temperature, s->color);
272 
273  ff_filter_execute(ctx, s->do_slice, frame, NULL,
274  FFMIN(frame->height, ff_filter_get_nb_threads(ctx)));
275 
276  return ff_filter_frame(ctx->outputs[0], frame);
277 }
278 
279 static const enum AVPixelFormat pixel_fmts[] = {
280  AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
281  AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA,
282  AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR,
283  AV_PIX_FMT_0RGB, AV_PIX_FMT_0BGR,
284  AV_PIX_FMT_RGB0, AV_PIX_FMT_BGR0,
285  AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
286  AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRP12,
287  AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
288  AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
289  AV_PIX_FMT_RGB48, AV_PIX_FMT_BGR48,
290  AV_PIX_FMT_RGBA64, AV_PIX_FMT_BGRA64,
291  AV_PIX_FMT_NONE
292 };
293 
294 static av_cold int config_input(AVFilterLink *inlink)
295 {
296  AVFilterContext *ctx = inlink->dst;
297  ColorTemperatureContext *s = ctx->priv;
298  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
299  int planar = desc->flags & AV_PIX_FMT_FLAG_PLANAR;
300 
301  s->step = desc->nb_components;
302  if (inlink->format == AV_PIX_FMT_RGB0 ||
303  inlink->format == AV_PIX_FMT_0RGB ||
304  inlink->format == AV_PIX_FMT_BGR0 ||
305  inlink->format == AV_PIX_FMT_0BGR)
306  s->step = 4;
307 
308  s->depth = desc->comp[0].depth;
309  s->do_slice = s->depth <= 8 ? temperature_slice8 : temperature_slice16;
310  if (!planar)
311  s->do_slice = s->depth <= 8 ? temperature_slice8p : temperature_slice16p;
312 
313  ff_fill_rgba_map(s->rgba_map, inlink->format);
314 
315  return 0;
316 }
317 
318 static const AVFilterPad inputs[] = {
319  {
320  .name = "default",
321  .type = AVMEDIA_TYPE_VIDEO,
322  .flags = AVFILTERPAD_FLAG_NEEDS_WRITABLE,
323  .filter_frame = filter_frame,
324  .config_props = config_input,
325  },
326 };
327 
328 static const AVFilterPad outputs[] = {
329  {
330  .name = "default",
331  .type = AVMEDIA_TYPE_VIDEO,
332  },
333 };
334 
335 #define OFFSET(x) offsetof(ColorTemperatureContext, x)
336 #define VF AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
337 
338 static const AVOption colortemperature_options[] = {
339  { "temperature", "set the temperature in Kelvin", OFFSET(temperature), AV_OPT_TYPE_FLOAT, {.dbl=6500}, 1000, 40000, VF },
340  { "mix", "set the mix with filtered output", OFFSET(mix), AV_OPT_TYPE_FLOAT, {.dbl=1}, 0, 1, VF },
341  { "pl", "set the amount of preserving lightness", OFFSET(preserve), AV_OPT_TYPE_FLOAT, {.dbl=0}, 0, 1, VF },
342  { NULL }
343 };
344 
345 AVFILTER_DEFINE_CLASS(colortemperature);
346 
347 const AVFilter ff_vf_colortemperature = {
348  .name = "colortemperature",
349  .description = NULL_IF_CONFIG_SMALL("Adjust color temperature of video."),
350  .priv_size = sizeof(ColorTemperatureContext),
351  .priv_class = &colortemperature_class,
352  FILTER_INPUTS(inputs),
353  FILTER_OUTPUTS(outputs),
354  FILTER_PIXFMTS_ARRAY(pixel_fmts),
355  .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
356  .process_command = ff_filter_process_command,
357 };
AV_PIX_FMT_GBRAP16
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:426
ColorTemperatureContext::depth
int depth
Definition: vf_colortemperature.c:45
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
mix
static int mix(int c0, int c1)
Definition: 4xm.c:716
r
const char * r
Definition: vf_curves.c:116
opt.h
lerpf
static float lerpf(float v0, float v1, float f)
Definition: vf_colortemperature.c:78
color
Definition: vf_paletteuse.c:600
ColorTemperatureContext::do_slice
int(* do_slice)(AVFilterContext *s, void *arg, int jobnr, int nb_jobs)
Definition: vf_colortemperature.c:48
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1018
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2660
FILTER_PIXFMTS_ARRAY
#define FILTER_PIXFMTS_ARRAY(array)
Definition: internal.h:171
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
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:317
av_clip_uintp2_c
static av_always_inline av_const unsigned av_clip_uintp2_c(int a, int p)
Clip a signed integer to an unsigned power of two range.
Definition: common.h:276
temperature_slice8
static int temperature_slice8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_colortemperature.c:104
step
trying all byte sequences megabyte in length and selecting the best looking sequence will yield cases to try But a word about which is also called distortion Distortion can be quantified by almost any quality measurement one chooses the sum of squared differences is used but more complex methods that consider psychovisual effects can be used as well It makes no difference in this discussion First step
Definition: rate_distortion.txt:58
kelvin2rgb
static void kelvin2rgb(float k, float *rgb)
Definition: vf_colortemperature.c:57
colortemperature_options
static const AVOption colortemperature_options[]
Definition: vf_colortemperature.c:338
AVOption
AVOption.
Definition: opt.h:247
b
#define b
Definition: input.c:40
R
#define R
Definition: vf_colortemperature.c:31
float.h
AV_PIX_FMT_BGR24
@ AV_PIX_FMT_BGR24
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:69
AV_PIX_FMT_BGRA
@ AV_PIX_FMT_BGRA
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
Definition: pixfmt.h:95
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:169
video.h
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
Definition: vf_colortemperature.c:266
ColorTemperatureContext::rgba_map
uint8_t rgba_map[4]
Definition: vf_colortemperature.c:46
config_input
static av_cold int config_input(AVFilterLink *inlink)
Definition: vf_colortemperature.c:294
outputs
static const AVFilterPad outputs[]
Definition: vf_colortemperature.c:328
formats.h
rgb
Definition: rpzaenc.c:59
ColorTemperatureContext::mix
float mix
Definition: vf_colortemperature.c:39
AV_PIX_FMT_GBRP14
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:422
AV_PIX_FMT_GBRAP
@ AV_PIX_FMT_GBRAP
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:205
v0
#define v0
Definition: regdef.h:26
AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:420
ColorTemperatureContext::temperature
float temperature
Definition: vf_colortemperature.c:38
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:50
av_cold
#define av_cold
Definition: attributes.h:90
VF
#define VF
Definition: vf_colortemperature.c:336
AV_PIX_FMT_GBRAP10
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:424
width
#define width
s
#define s(width, name)
Definition: cbs_vp9.c:257
AV_PIX_FMT_GBRAP12
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:425
g
const char * g
Definition: vf_curves.c:117
inputs
static const AVFilterPad inputs[]
Definition: vf_colortemperature.c:318
slice_end
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
Handle slice ends.
Definition: mpeg12dec.c:2039
ctx
AVFormatContext * ctx
Definition: movenc.c:48
f
#define f(width, name)
Definition: cbs_vp9.c:255
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:191
AV_PIX_FMT_RGBA
@ AV_PIX_FMT_RGBA
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:93
arg
const char * arg
Definition: jacosubdec.c:67
temperature_slice16
static int temperature_slice16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_colortemperature.c:145
AV_PIX_FMT_GBRP16
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:423
AV_PIX_FMT_RGBA64
#define AV_PIX_FMT_RGBA64
Definition: pixfmt.h:394
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
AV_PIX_FMT_BGR48
#define AV_PIX_FMT_BGR48
Definition: pixfmt.h:395
NULL
#define NULL
Definition: coverity.c:32
ColorTemperatureContext::preserve
float preserve
Definition: vf_colortemperature.c:40
PROCESS
#define PROCESS()
Definition: vf_colortemperature.c:83
av_clipf
#define av_clipf
Definition: common.h:144
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(colortemperature)
saturate
static float saturate(float input)
Definition: vf_colortemperature.c:52
AV_PIX_FMT_BGR0
@ AV_PIX_FMT_BGR0
packed BGR 8:8:8, 32bpp, BGRXBGRX... X=unused/undefined
Definition: pixfmt.h:230
AV_PIX_FMT_GBRP9
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:419
AV_PIX_FMT_ABGR
@ AV_PIX_FMT_ABGR
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
Definition: pixfmt.h:94
G
#define G
Definition: vf_colortemperature.c:32
AV_PIX_FMT_RGB24
@ AV_PIX_FMT_RGB24
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:68
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:117
powf
#define powf(x, y)
Definition: libm.h:50
for
for(k=2;k<=8;++k)
Definition: h264pred_template.c:425
fmaxf
float fmaxf(float, float)
AV_PIX_FMT_RGB48
#define AV_PIX_FMT_RGB48
Definition: pixfmt.h:390
ff_filter_process_command
int ff_filter_process_command(AVFilterContext *ctx, const char *cmd, const char *arg, char *res, int res_len, int flags)
Generic processing of user supplied commands that are set in the same way as the filter options.
Definition: avfilter.c:882
height
#define height
AV_PIX_FMT_RGB0
@ AV_PIX_FMT_RGB0
packed RGB 8:8:8, 32bpp, RGBXRGBX... X=unused/undefined
Definition: pixfmt.h:228
input
and forward the test the status of outputs and forward it to the corresponding return FFERROR_NOT_READY If the filters stores internally one or a few frame for some input
Definition: filter_design.txt:172
internal.h
AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
#define AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
Some filters support a generic "enable" expression option that can be used to enable or disable a fil...
Definition: avfilter.h:146
AV_PIX_FMT_ARGB
@ AV_PIX_FMT_ARGB
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
Definition: pixfmt.h:92
AV_OPT_TYPE_FLOAT
@ AV_OPT_TYPE_FLOAT
Definition: opt.h:227
temperature_slice16p
static int temperature_slice16p(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_colortemperature.c:226
AV_PIX_FMT_BGRA64
#define AV_PIX_FMT_BGRA64
Definition: pixfmt.h:399
AV_PIX_FMT_GBRP12
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:421
ff_filter_get_nb_threads
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:803
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
OFFSET
#define OFFSET(x)
Definition: vf_colortemperature.c:335
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:56
AVFilter
Filter definition.
Definition: avfilter.h:165
AV_PIX_FMT_0BGR
@ AV_PIX_FMT_0BGR
packed BGR 8:8:8, 32bpp, XBGRXBGR... X=unused/undefined
Definition: pixfmt.h:229
frame
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
Definition: filter_design.txt:264
ff_vf_colortemperature
const AVFilter ff_vf_colortemperature
Definition: vf_colortemperature.c:347
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
avfilter.h
AV_PIX_FMT_FLAG_PLANAR
#define AV_PIX_FMT_FLAG_PLANAR
At least one pixel component is not in the first data plane.
Definition: pixdesc.h:132
av_clip_uint8
#define av_clip_uint8
Definition: common.h:102
AVFilterContext
An instance of a filter.
Definition: avfilter.h:402
AV_PIX_FMT_GBRP
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:158
AVFILTER_FLAG_SLICE_THREADS
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:121
desc
const char * desc
Definition: libsvtav1.c:79
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
ColorTemperatureContext::step
int step
Definition: vf_colortemperature.c:44
B
#define B
Definition: vf_colortemperature.c:33
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:192
ff_fill_rgba_map
int ff_fill_rgba_map(uint8_t *rgba_map, enum AVPixelFormat pix_fmt)
Definition: drawutils.c:34
imgutils.h
AV_PIX_FMT_0RGB
@ AV_PIX_FMT_0RGB
packed RGB 8:8:8, 32bpp, XRGBXRGB... X=unused/undefined
Definition: pixfmt.h:227
ColorTemperatureContext
Definition: vf_colortemperature.c:35
drawutils.h
ff_filter_execute
static av_always_inline int ff_filter_execute(AVFilterContext *ctx, avfilter_action_func *func, void *arg, int *ret, int nb_jobs)
Definition: internal.h:143
planar
uint8_t pi<< 24) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_U8,(uint64_t)((*(const uint8_t *) pi - 0x80U))<< 56) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16,(*(const int16_t *) pi >>8)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_S16, *(const int16_t *) pi *(1<< 16)) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S16,(uint64_t)(*(const int16_t *) pi)<< 48) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32,(*(const int32_t *) pi >>24)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S32,(uint64_t)(*(const int32_t *) pi)<< 32) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S64,(*(const int64_t *) pi >>56)+0x80) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S64, *(const int64_t *) pi *(1.0f/(UINT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S64, *(const int64_t *) pi *(1.0/(UINT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_FLT, llrintf(*(const float *) pi *(UINT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_DBL, llrint(*(const double *) pi *(UINT64_C(1)<< 63))) #define FMT_PAIR_FUNC(out, in) static conv_func_type *const fmt_pair_to_conv_functions[AV_SAMPLE_FMT_NB *AV_SAMPLE_FMT_NB]={ FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S64), };static void cpy1(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, len);} static void cpy2(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 2 *len);} static void cpy4(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 4 *len);} static void cpy8(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 8 *len);} AudioConvert *swri_audio_convert_alloc(enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, const int *ch_map, int flags) { AudioConvert *ctx;conv_func_type *f=fmt_pair_to_conv_functions[av_get_packed_sample_fmt(out_fmt)+AV_SAMPLE_FMT_NB *av_get_packed_sample_fmt(in_fmt)];if(!f) return NULL;ctx=av_mallocz(sizeof(*ctx));if(!ctx) return NULL;if(channels==1){ in_fmt=av_get_planar_sample_fmt(in_fmt);out_fmt=av_get_planar_sample_fmt(out_fmt);} ctx->channels=channels;ctx->conv_f=f;ctx->ch_map=ch_map;if(in_fmt==AV_SAMPLE_FMT_U8||in_fmt==AV_SAMPLE_FMT_U8P) memset(ctx->silence, 0x80, sizeof(ctx->silence));if(out_fmt==in_fmt &&!ch_map) { switch(av_get_bytes_per_sample(in_fmt)){ case 1:ctx->simd_f=cpy1;break;case 2:ctx->simd_f=cpy2;break;case 4:ctx->simd_f=cpy4;break;case 8:ctx->simd_f=cpy8;break;} } if(HAVE_X86ASM &&1) swri_audio_convert_init_x86(ctx, out_fmt, in_fmt, channels);if(ARCH_ARM) swri_audio_convert_init_arm(ctx, out_fmt, in_fmt, channels);if(ARCH_AARCH64) swri_audio_convert_init_aarch64(ctx, out_fmt, in_fmt, channels);return ctx;} void swri_audio_convert_free(AudioConvert **ctx) { av_freep(ctx);} int swri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, int len) { int ch;int off=0;const int os=(out->planar ? 1 :out->ch_count) *out->bps;unsigned misaligned=0;av_assert0(ctx->channels==out->ch_count);if(ctx->in_simd_align_mask) { int planes=in->planar ? in->ch_count :1;unsigned m=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) in->ch[ch];misaligned|=m &ctx->in_simd_align_mask;} if(ctx->out_simd_align_mask) { int planes=out->planar ? out->ch_count :1;unsigned m=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) out->ch[ch];misaligned|=m &ctx->out_simd_align_mask;} if(ctx->simd_f &&!ctx->ch_map &&!misaligned){ off=len &~15;av_assert1(off >=0);av_assert1(off<=len);av_assert2(ctx->channels==SWR_CH_MAX||!in->ch[ctx->channels]);if(off >0){ if(out->planar==in->planar){ int planes=out->planar ? out->ch_count :1;for(ch=0;ch< planes;ch++){ ctx->simd_f(out->ch+ch,(const uint8_t **) in->ch+ch, off *(out-> planar
Definition: audioconvert.c:56
int
int
Definition: ffmpeg_filter.c:153
temperature_slice8p
static int temperature_slice8p(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_colortemperature.c:187
pixel_fmts
static enum AVPixelFormat pixel_fmts[]
Definition: vf_colortemperature.c:279
AVFILTERPAD_FLAG_NEEDS_WRITABLE
#define AVFILTERPAD_FLAG_NEEDS_WRITABLE
The filter expects writable frames from its input link, duplicating data buffers if needed.
Definition: internal.h:69
Generated on Tue Jan 25 2022 19:21:56 for FFmpeg by   doxygen 1.8.17