FFmpeg
vf_tonemap.c
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1 /*
2  * Copyright (c) 2017 Vittorio Giovara <vittorio.giovara@gmail.com>
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 /**
22  * @file
23  * tonemap algorithms
24  */
25 
26 #include <float.h>
27 #include <stdio.h>
28 #include <string.h>
29 
30 #include "libavutil/imgutils.h"
31 #include "libavutil/internal.h"
32 #include "libavutil/intreadwrite.h"
33 #include "libavutil/opt.h"
34 #include "libavutil/pixdesc.h"
35 
36 #include "avfilter.h"
37 #include "colorspace.h"
38 #include "formats.h"
39 #include "internal.h"
40 #include "video.h"
41 
51 };
52 
54  [AVCOL_SPC_FCC] = { 0.30, 0.59, 0.11 },
55  [AVCOL_SPC_BT470BG] = { 0.299, 0.587, 0.114 },
56  [AVCOL_SPC_SMPTE170M] = { 0.299, 0.587, 0.114 },
57  [AVCOL_SPC_BT709] = { 0.2126, 0.7152, 0.0722 },
58  [AVCOL_SPC_SMPTE240M] = { 0.212, 0.701, 0.087 },
59  [AVCOL_SPC_BT2020_NCL] = { 0.2627, 0.6780, 0.0593 },
60  [AVCOL_SPC_BT2020_CL] = { 0.2627, 0.6780, 0.0593 },
61 };
62 
63 typedef struct TonemapContext {
64  const AVClass *class;
65 
67  double param;
68  double desat;
69  double peak;
70 
71  const struct LumaCoefficients *coeffs;
73 
75 {
76  TonemapContext *s = ctx->priv;
77 
78  switch(s->tonemap) {
79  case TONEMAP_GAMMA:
80  if (isnan(s->param))
81  s->param = 1.8f;
82  break;
83  case TONEMAP_REINHARD:
84  if (!isnan(s->param))
85  s->param = (1.0f - s->param) / s->param;
86  break;
87  case TONEMAP_MOBIUS:
88  if (isnan(s->param))
89  s->param = 0.3f;
90  break;
91  }
92 
93  if (isnan(s->param))
94  s->param = 1.0f;
95 
96  return 0;
97 }
98 
99 static float hable(float in)
100 {
101  float a = 0.15f, b = 0.50f, c = 0.10f, d = 0.20f, e = 0.02f, f = 0.30f;
102  return (in * (in * a + b * c) + d * e) / (in * (in * a + b) + d * f) - e / f;
103 }
104 
105 static float mobius(float in, float j, double peak)
106 {
107  float a, b;
108 
109  if (in <= j)
110  return in;
111 
112  a = -j * j * (peak - 1.0f) / (j * j - 2.0f * j + peak);
113  b = (j * j - 2.0f * j * peak + peak) / FFMAX(peak - 1.0f, 1e-6);
114 
115  return (b * b + 2.0f * b * j + j * j) / (b - a) * (in + a) / (in + b);
116 }
117 
118 #define MIX(x,y,a) (x) * (1 - (a)) + (y) * (a)
119 static void tonemap(TonemapContext *s, AVFrame *out, const AVFrame *in,
120  const AVPixFmtDescriptor *desc, int x, int y, double peak)
121 {
122  int map[3] = { desc->comp[0].plane, desc->comp[1].plane, desc->comp[2].plane };
123  const float *r_in = (const float *)(in->data[map[0]] + x * desc->comp[map[0]].step + y * in->linesize[map[0]]);
124  const float *g_in = (const float *)(in->data[map[1]] + x * desc->comp[map[1]].step + y * in->linesize[map[1]]);
125  const float *b_in = (const float *)(in->data[map[2]] + x * desc->comp[map[2]].step + y * in->linesize[map[2]]);
126  float *r_out = (float *)(out->data[map[0]] + x * desc->comp[map[0]].step + y * out->linesize[map[0]]);
127  float *g_out = (float *)(out->data[map[1]] + x * desc->comp[map[1]].step + y * out->linesize[map[1]]);
128  float *b_out = (float *)(out->data[map[2]] + x * desc->comp[map[2]].step + y * out->linesize[map[2]]);
129  float sig, sig_orig;
130 
131  /* load values */
132  *r_out = *r_in;
133  *g_out = *g_in;
134  *b_out = *b_in;
135 
136  /* desaturate to prevent unnatural colors */
137  if (s->desat > 0) {
138  float luma = s->coeffs->cr * *r_in + s->coeffs->cg * *g_in + s->coeffs->cb * *b_in;
139  float overbright = FFMAX(luma - s->desat, 1e-6) / FFMAX(luma, 1e-6);
140  *r_out = MIX(*r_in, luma, overbright);
141  *g_out = MIX(*g_in, luma, overbright);
142  *b_out = MIX(*b_in, luma, overbright);
143  }
144 
145  /* pick the brightest component, reducing the value range as necessary
146  * to keep the entire signal in range and preventing discoloration due to
147  * out-of-bounds clipping */
148  sig = FFMAX(FFMAX3(*r_out, *g_out, *b_out), 1e-6);
149  sig_orig = sig;
150 
151  switch(s->tonemap) {
152  default:
153  case TONEMAP_NONE:
154  // do nothing
155  break;
156  case TONEMAP_LINEAR:
157  sig = sig * s->param / peak;
158  break;
159  case TONEMAP_GAMMA:
160  sig = sig > 0.05f ? pow(sig / peak, 1.0f / s->param)
161  : sig * pow(0.05f / peak, 1.0f / s->param) / 0.05f;
162  break;
163  case TONEMAP_CLIP:
164  sig = av_clipf(sig * s->param, 0, 1.0f);
165  break;
166  case TONEMAP_HABLE:
167  sig = hable(sig) / hable(peak);
168  break;
169  case TONEMAP_REINHARD:
170  sig = sig / (sig + s->param) * (peak + s->param) / peak;
171  break;
172  case TONEMAP_MOBIUS:
173  sig = mobius(sig, s->param, peak);
174  break;
175  }
176 
177  /* apply the computed scale factor to the color,
178  * linearly to prevent discoloration */
179  *r_out *= sig / sig_orig;
180  *g_out *= sig / sig_orig;
181  *b_out *= sig / sig_orig;
182 }
183 
184 typedef struct ThreadData {
185  AVFrame *in, *out;
187  double peak;
188 } ThreadData;
189 
190 static int tonemap_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
191 {
192  TonemapContext *s = ctx->priv;
193  ThreadData *td = arg;
194  AVFrame *in = td->in;
195  AVFrame *out = td->out;
196  const AVPixFmtDescriptor *desc = td->desc;
197  const int slice_start = (in->height * jobnr) / nb_jobs;
198  const int slice_end = (in->height * (jobnr+1)) / nb_jobs;
199  double peak = td->peak;
200 
201  for (int y = slice_start; y < slice_end; y++)
202  for (int x = 0; x < out->width; x++)
203  tonemap(s, out, in, desc, x, y, peak);
204 
205  return 0;
206 }
207 
209 {
210  AVFilterContext *ctx = link->dst;
211  TonemapContext *s = ctx->priv;
212  AVFilterLink *outlink = ctx->outputs[0];
213  ThreadData td;
214  AVFrame *out;
216  const AVPixFmtDescriptor *odesc = av_pix_fmt_desc_get(outlink->format);
217  int ret, x, y;
218  double peak = s->peak;
219 
220  if (!desc || !odesc) {
221  av_frame_free(&in);
222  return AVERROR_BUG;
223  }
224 
225  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
226  if (!out) {
227  av_frame_free(&in);
228  return AVERROR(ENOMEM);
229  }
230 
231  ret = av_frame_copy_props(out, in);
232  if (ret < 0) {
233  av_frame_free(&in);
234  av_frame_free(&out);
235  return ret;
236  }
237 
238  /* input and output transfer will be linear */
239  if (in->color_trc == AVCOL_TRC_UNSPECIFIED) {
240  av_log(s, AV_LOG_WARNING, "Untagged transfer, assuming linear light\n");
241  out->color_trc = AVCOL_TRC_LINEAR;
242  } else if (in->color_trc != AVCOL_TRC_LINEAR)
243  av_log(s, AV_LOG_WARNING, "Tonemapping works on linear light only\n");
244 
245  /* read peak from side data if not passed in */
246  if (!peak) {
247  peak = ff_determine_signal_peak(in);
248  av_log(s, AV_LOG_DEBUG, "Computed signal peak: %f\n", peak);
249  }
250 
251  /* load original color space even if pixel format is RGB to compute overbrights */
252  s->coeffs = &luma_coefficients[in->colorspace];
253  if (s->desat > 0 && (in->colorspace == AVCOL_SPC_UNSPECIFIED || !s->coeffs)) {
255  av_log(s, AV_LOG_WARNING, "Missing color space information, ");
256  else if (!s->coeffs)
257  av_log(s, AV_LOG_WARNING, "Unsupported color space '%s', ",
259  av_log(s, AV_LOG_WARNING, "desaturation is disabled\n");
260  s->desat = 0;
261  }
262 
263  /* do the tone map */
264  td.out = out;
265  td.in = in;
266  td.desc = desc;
267  td.peak = peak;
270 
271  /* copy/generate alpha if needed */
272  if (desc->flags & AV_PIX_FMT_FLAG_ALPHA && odesc->flags & AV_PIX_FMT_FLAG_ALPHA) {
273  av_image_copy_plane(out->data[3], out->linesize[3],
274  in->data[3], in->linesize[3],
275  out->linesize[3], outlink->h);
276  } else if (odesc->flags & AV_PIX_FMT_FLAG_ALPHA) {
277  for (y = 0; y < out->height; y++) {
278  for (x = 0; x < out->width; x++) {
279  AV_WN32(out->data[3] + x * odesc->comp[3].step + y * out->linesize[3],
280  av_float2int(1.0f));
281  }
282  }
283  }
284 
285  av_frame_free(&in);
286 
288 
289  return ff_filter_frame(outlink, out);
290 }
291 
292 #define OFFSET(x) offsetof(TonemapContext, x)
293 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
294 static const AVOption tonemap_options[] = {
295  { "tonemap", "tonemap algorithm selection", OFFSET(tonemap), AV_OPT_TYPE_INT, {.i64 = TONEMAP_NONE}, TONEMAP_NONE, TONEMAP_MAX - 1, FLAGS, "tonemap" },
296  { "none", 0, 0, AV_OPT_TYPE_CONST, {.i64 = TONEMAP_NONE}, 0, 0, FLAGS, "tonemap" },
297  { "linear", 0, 0, AV_OPT_TYPE_CONST, {.i64 = TONEMAP_LINEAR}, 0, 0, FLAGS, "tonemap" },
298  { "gamma", 0, 0, AV_OPT_TYPE_CONST, {.i64 = TONEMAP_GAMMA}, 0, 0, FLAGS, "tonemap" },
299  { "clip", 0, 0, AV_OPT_TYPE_CONST, {.i64 = TONEMAP_CLIP}, 0, 0, FLAGS, "tonemap" },
300  { "reinhard", 0, 0, AV_OPT_TYPE_CONST, {.i64 = TONEMAP_REINHARD}, 0, 0, FLAGS, "tonemap" },
301  { "hable", 0, 0, AV_OPT_TYPE_CONST, {.i64 = TONEMAP_HABLE}, 0, 0, FLAGS, "tonemap" },
302  { "mobius", 0, 0, AV_OPT_TYPE_CONST, {.i64 = TONEMAP_MOBIUS}, 0, 0, FLAGS, "tonemap" },
303  { "param", "tonemap parameter", OFFSET(param), AV_OPT_TYPE_DOUBLE, {.dbl = NAN}, DBL_MIN, DBL_MAX, FLAGS },
304  { "desat", "desaturation strength", OFFSET(desat), AV_OPT_TYPE_DOUBLE, {.dbl = 2}, 0, DBL_MAX, FLAGS },
305  { "peak", "signal peak override", OFFSET(peak), AV_OPT_TYPE_DOUBLE, {.dbl = 0}, 0, DBL_MAX, FLAGS },
306  { NULL }
307 };
308 
310 
311 static const AVFilterPad tonemap_inputs[] = {
312  {
313  .name = "default",
314  .type = AVMEDIA_TYPE_VIDEO,
315  .filter_frame = filter_frame,
316  },
317 };
318 
319 static const AVFilterPad tonemap_outputs[] = {
320  {
321  .name = "default",
322  .type = AVMEDIA_TYPE_VIDEO,
323  },
324 };
325 
327  .name = "tonemap",
328  .description = NULL_IF_CONFIG_SMALL("Conversion to/from different dynamic ranges."),
329  .init = init,
330  .priv_size = sizeof(TonemapContext),
331  .priv_class = &tonemap_class,
336 };
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:101
AVFrame::color_trc
enum AVColorTransferCharacteristic color_trc
Definition: frame.h:582
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:186
td
#define td
Definition: regdef.h:70
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
out
FILE * out
Definition: movenc.c:54
TONEMAP_GAMMA
@ TONEMAP_GAMMA
Definition: vf_tonemap.c:45
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:999
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2662
AVCOL_TRC_LINEAR
@ AVCOL_TRC_LINEAR
"Linear transfer characteristics"
Definition: pixfmt.h:505
hable
static float hable(float in)
Definition: vf_tonemap.c:99
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:111
AVFrame::colorspace
enum AVColorSpace colorspace
YUV colorspace type.
Definition: frame.h:589
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:325
pixdesc.h
AVOption
AVOption.
Definition: opt.h:251
AVCOL_SPC_NB
@ AVCOL_SPC_NB
Not part of ABI.
Definition: pixfmt.h:542
b
#define b
Definition: input.c:34
AVCOL_TRC_UNSPECIFIED
@ AVCOL_TRC_UNSPECIFIED
Definition: pixfmt.h:499
LumaCoefficients
Definition: colorspace.h:28
AVComponentDescriptor::step
int step
Number of elements between 2 horizontally consecutive pixels.
Definition: pixdesc.h:40
tonemap_options
static const AVOption tonemap_options[]
Definition: vf_tonemap.c:294
ff_determine_signal_peak
double ff_determine_signal_peak(AVFrame *in)
Definition: colorspace.c:225
ThreadData::desc
const AVPixFmtDescriptor * desc
Definition: vf_tonemap.c:186
float.h
FLAGS
#define FLAGS
Definition: vf_tonemap.c:293
ThreadData::peak
double peak
Definition: vf_tonemap.c:187
FFMAX
#define FFMAX(a, b)
Definition: macros.h:47
tonemap_inputs
static const AVFilterPad tonemap_inputs[]
Definition: vf_tonemap.c:311
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:175
av_float2int
static av_always_inline uint32_t av_float2int(float f)
Reinterpret a float as a 32-bit integer.
Definition: intfloat.h:50
ThreadData::out
AVFrame * out
Definition: af_adeclick.c:473
video.h
ThreadData::in
AVFrame * in
Definition: af_adecorrelate.c:154
AVCOL_SPC_BT2020_CL
@ AVCOL_SPC_BT2020_CL
ITU-R BT2020 constant luminance system.
Definition: pixfmt.h:537
tonemap_outputs
static const AVFilterPad tonemap_outputs[]
Definition: vf_tonemap.c:319
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:346
av_image_copy_plane
void av_image_copy_plane(uint8_t *dst, int dst_linesize, const uint8_t *src, int src_linesize, int bytewidth, int height)
Copy image plane from src to dst.
Definition: imgutils.c:374
formats.h
AVCOL_SPC_BT470BG
@ AVCOL_SPC_BT470BG
also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM / IEC 61966-2-4 xvYCC601
Definition: pixfmt.h:531
av_color_space_name
const char * av_color_space_name(enum AVColorSpace space)
Definition: pixdesc.c:3050
colorspace.h
tonemap
static void tonemap(TonemapContext *s, AVFrame *out, const AVFrame *in, const AVPixFmtDescriptor *desc, int x, int y, double peak)
Definition: vf_tonemap.c:119
TonemapContext::desat
double desat
Definition: vf_tonemap.c:68
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:49
av_cold
#define av_cold
Definition: attributes.h:90
intreadwrite.h
s
#define s(width, name)
Definition: cbs_vp9.c:256
AVCOL_SPC_SMPTE170M
@ AVCOL_SPC_SMPTE170M
also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC / functionally identical to above
Definition: pixfmt.h:532
AV_OPT_TYPE_DOUBLE
@ AV_OPT_TYPE_DOUBLE
Definition: opt.h:227
slice_end
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
Handle slice ends.
Definition: mpeg12dec.c:2013
tonemap_slice
static int tonemap_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_tonemap.c:190
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:201
AV_PIX_FMT_FLAG_ALPHA
#define AV_PIX_FMT_FLAG_ALPHA
The pixel format has an alpha channel.
Definition: pixdesc.h:147
ctx
AVFormatContext * ctx
Definition: movenc.c:48
TonemapContext::peak
double peak
Definition: vf_tonemap.c:69
NAN
#define NAN
Definition: mathematics.h:64
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:190
link
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 link
Definition: filter_design.txt:23
arg
const char * arg
Definition: jacosubdec.c:67
if
if(ret)
Definition: filter_design.txt:179
init
static av_cold int init(AVFilterContext *ctx)
Definition: vf_tonemap.c:74
luma_coefficients
static const struct LumaCoefficients luma_coefficients[AVCOL_SPC_NB]
Definition: vf_tonemap.c:53
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
MIX
#define MIX(x, y, a)
Definition: vf_tonemap.c:118
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:596
isnan
#define isnan(x)
Definition: libm.h:340
av_clipf
av_clipf
Definition: af_crystalizer.c:122
AVPixFmtDescriptor::flags
uint64_t flags
Combination of AV_PIX_FMT_FLAG_...
Definition: pixdesc.h:94
c
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
TonemapAlgorithm
TonemapAlgorithm
Definition: vf_tonemap.c:42
f
f
Definition: af_crystalizer.c:122
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
AV_WN32
#define AV_WN32(p, v)
Definition: intreadwrite.h:376
FILTER_PIXFMTS
#define FILTER_PIXFMTS(...)
Definition: internal.h:176
AV_PIX_FMT_GBRPF32
#define AV_PIX_FMT_GBRPF32
Definition: pixfmt.h:435
ff_update_hdr_metadata
void ff_update_hdr_metadata(AVFrame *in, double peak)
Definition: colorspace.c:250
AVFrame::format
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames,...
Definition: frame.h:412
a
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
Definition: undefined.txt:41
internal.h
AVCOL_SPC_SMPTE240M
@ AVCOL_SPC_SMPTE240M
derived from 170M primaries and D65 white point, 170M is derived from BT470 System M's primaries
Definition: pixfmt.h:533
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(tonemap)
AVCOL_SPC_BT2020_NCL
@ AVCOL_SPC_BT2020_NCL
ITU-R BT2020 non-constant luminance system.
Definition: pixfmt.h:536
internal.h
ff_filter_get_nb_threads
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:783
ThreadData
Used for passing data between threads.
Definition: dsddec.c:68
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:55
AVCOL_SPC_UNSPECIFIED
@ AVCOL_SPC_UNSPECIFIED
Definition: pixfmt.h:528
TONEMAP_CLIP
@ TONEMAP_CLIP
Definition: vf_tonemap.c:46
AVFilter
Filter definition.
Definition: avfilter.h:171
TonemapContext
Definition: vf_tonemap.c:63
ret
ret
Definition: filter_design.txt:187
TonemapContext::coeffs
const struct LumaCoefficients * coeffs
Definition: vf_tonemap.c:71
mobius
static float mobius(float in, float j, double peak)
Definition: vf_tonemap.c:105
ff_vf_tonemap
const AVFilter ff_vf_tonemap
Definition: vf_tonemap.c:326
TONEMAP_HABLE
@ TONEMAP_HABLE
Definition: vf_tonemap.c:48
TonemapContext::param
double param
Definition: vf_tonemap.c:67
AVFrame::height
int height
Definition: frame.h:397
AVCOL_SPC_FCC
@ AVCOL_SPC_FCC
FCC Title 47 Code of Federal Regulations 73.682 (a)(20)
Definition: pixfmt.h:530
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:225
avfilter.h
AV_PIX_FMT_GBRAPF32
#define AV_PIX_FMT_GBRAPF32
Definition: pixfmt.h:436
AVPixFmtDescriptor::comp
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:105
TONEMAP_MAX
@ TONEMAP_MAX
Definition: vf_tonemap.c:50
AVFilterContext
An instance of a filter.
Definition: avfilter.h:408
OFFSET
#define OFFSET(x)
Definition: vf_tonemap.c:292
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:127
desc
const char * desc
Definition: libsvtav1.c:83
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
TONEMAP_NONE
@ TONEMAP_NONE
Definition: vf_tonemap.c:43
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
map
const VDPAUPixFmtMap * map
Definition: hwcontext_vdpau.c:71
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:191
TonemapContext::tonemap
enum TonemapAlgorithm tonemap
Definition: vf_tonemap.c:66
FFMAX3
#define FFMAX3(a, b, c)
Definition: macros.h:48
d
d
Definition: ffmpeg_filter.c:153
imgutils.h
AVERROR_BUG
#define AVERROR_BUG
Internal bug, also see AVERROR_BUG2.
Definition: error.h:52
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:370
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
filter_frame
static int filter_frame(AVFilterLink *link, AVFrame *in)
Definition: vf_tonemap.c:208
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:142
AVCOL_SPC_BT709
@ AVCOL_SPC_BT709
also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / derived in SMPTE RP 177 Annex B
Definition: pixfmt.h:527
TONEMAP_MOBIUS
@ TONEMAP_MOBIUS
Definition: vf_tonemap.c:49
TONEMAP_LINEAR
@ TONEMAP_LINEAR
Definition: vf_tonemap.c:44
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:234
TONEMAP_REINHARD
@ TONEMAP_REINHARD
Definition: vf_tonemap.c:47