FFmpeg  4.2.1
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 
74 static const enum AVPixelFormat pix_fmts[] = {
78 };
79 
81 {
83 }
84 
86 {
87  TonemapContext *s = ctx->priv;
88 
89  switch(s->tonemap) {
90  case TONEMAP_GAMMA:
91  if (isnan(s->param))
92  s->param = 1.8f;
93  break;
94  case TONEMAP_REINHARD:
95  if (!isnan(s->param))
96  s->param = (1.0f - s->param) / s->param;
97  break;
98  case TONEMAP_MOBIUS:
99  if (isnan(s->param))
100  s->param = 0.3f;
101  break;
102  }
103 
104  if (isnan(s->param))
105  s->param = 1.0f;
106 
107  return 0;
108 }
109 
110 static float hable(float in)
111 {
112  float a = 0.15f, b = 0.50f, c = 0.10f, d = 0.20f, e = 0.02f, f = 0.30f;
113  return (in * (in * a + b * c) + d * e) / (in * (in * a + b) + d * f) - e / f;
114 }
115 
116 static float mobius(float in, float j, double peak)
117 {
118  float a, b;
119 
120  if (in <= j)
121  return in;
122 
123  a = -j * j * (peak - 1.0f) / (j * j - 2.0f * j + peak);
124  b = (j * j - 2.0f * j * peak + peak) / FFMAX(peak - 1.0f, 1e-6);
125 
126  return (b * b + 2.0f * b * j + j * j) / (b - a) * (in + a) / (in + b);
127 }
128 
129 #define MIX(x,y,a) (x) * (1 - (a)) + (y) * (a)
130 static void tonemap(TonemapContext *s, AVFrame *out, const AVFrame *in,
131  const AVPixFmtDescriptor *desc, int x, int y, double peak)
132 {
133  const float *r_in = (const float *)(in->data[0] + x * desc->comp[0].step + y * in->linesize[0]);
134  const float *b_in = (const float *)(in->data[1] + x * desc->comp[1].step + y * in->linesize[1]);
135  const float *g_in = (const float *)(in->data[2] + x * desc->comp[2].step + y * in->linesize[2]);
136  float *r_out = (float *)(out->data[0] + x * desc->comp[0].step + y * out->linesize[0]);
137  float *b_out = (float *)(out->data[1] + x * desc->comp[1].step + y * out->linesize[1]);
138  float *g_out = (float *)(out->data[2] + x * desc->comp[2].step + y * out->linesize[2]);
139  float sig, sig_orig;
140 
141  /* load values */
142  *r_out = *r_in;
143  *b_out = *b_in;
144  *g_out = *g_in;
145 
146  /* desaturate to prevent unnatural colors */
147  if (s->desat > 0) {
148  float luma = s->coeffs->cr * *r_in + s->coeffs->cg * *g_in + s->coeffs->cb * *b_in;
149  float overbright = FFMAX(luma - s->desat, 1e-6) / FFMAX(luma, 1e-6);
150  *r_out = MIX(*r_in, luma, overbright);
151  *g_out = MIX(*g_in, luma, overbright);
152  *b_out = MIX(*b_in, luma, overbright);
153  }
154 
155  /* pick the brightest component, reducing the value range as necessary
156  * to keep the entire signal in range and preventing discoloration due to
157  * out-of-bounds clipping */
158  sig = FFMAX(FFMAX3(*r_out, *g_out, *b_out), 1e-6);
159  sig_orig = sig;
160 
161  switch(s->tonemap) {
162  default:
163  case TONEMAP_NONE:
164  // do nothing
165  break;
166  case TONEMAP_LINEAR:
167  sig = sig * s->param / peak;
168  break;
169  case TONEMAP_GAMMA:
170  sig = sig > 0.05f ? pow(sig / peak, 1.0f / s->param)
171  : sig * pow(0.05f / peak, 1.0f / s->param) / 0.05f;
172  break;
173  case TONEMAP_CLIP:
174  sig = av_clipf(sig * s->param, 0, 1.0f);
175  break;
176  case TONEMAP_HABLE:
177  sig = hable(sig) / hable(peak);
178  break;
179  case TONEMAP_REINHARD:
180  sig = sig / (sig + s->param) * (peak + s->param) / peak;
181  break;
182  case TONEMAP_MOBIUS:
183  sig = mobius(sig, s->param, peak);
184  break;
185  }
186 
187  /* apply the computed scale factor to the color,
188  * linearly to prevent discoloration */
189  *r_out *= sig / sig_orig;
190  *g_out *= sig / sig_orig;
191  *b_out *= sig / sig_orig;
192 }
193 
194 typedef struct ThreadData {
195  AVFrame *in, *out;
197  double peak;
198 } ThreadData;
199 
200 static int tonemap_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
201 {
202  TonemapContext *s = ctx->priv;
203  ThreadData *td = arg;
204  AVFrame *in = td->in;
205  AVFrame *out = td->out;
206  const AVPixFmtDescriptor *desc = td->desc;
207  const int slice_start = (in->height * jobnr) / nb_jobs;
208  const int slice_end = (in->height * (jobnr+1)) / nb_jobs;
209  double peak = td->peak;
210 
211  for (int y = slice_start; y < slice_end; y++)
212  for (int x = 0; x < out->width; x++)
213  tonemap(s, out, in, desc, x, y, peak);
214 
215  return 0;
216 }
217 
218 static int filter_frame(AVFilterLink *link, AVFrame *in)
219 {
220  AVFilterContext *ctx = link->dst;
221  TonemapContext *s = ctx->priv;
222  AVFilterLink *outlink = ctx->outputs[0];
223  ThreadData td;
224  AVFrame *out;
226  const AVPixFmtDescriptor *odesc = av_pix_fmt_desc_get(outlink->format);
227  int ret, x, y;
228  double peak = s->peak;
229 
230  if (!desc || !odesc) {
231  av_frame_free(&in);
232  return AVERROR_BUG;
233  }
234 
235  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
236  if (!out) {
237  av_frame_free(&in);
238  return AVERROR(ENOMEM);
239  }
240 
241  ret = av_frame_copy_props(out, in);
242  if (ret < 0) {
243  av_frame_free(&in);
244  av_frame_free(&out);
245  return ret;
246  }
247 
248  /* input and output transfer will be linear */
249  if (in->color_trc == AVCOL_TRC_UNSPECIFIED) {
250  av_log(s, AV_LOG_WARNING, "Untagged transfer, assuming linear light\n");
252  } else if (in->color_trc != AVCOL_TRC_LINEAR)
253  av_log(s, AV_LOG_WARNING, "Tonemapping works on linear light only\n");
254 
255  /* read peak from side data if not passed in */
256  if (!peak) {
257  peak = ff_determine_signal_peak(in);
258  av_log(s, AV_LOG_DEBUG, "Computed signal peak: %f\n", peak);
259  }
260 
261  /* load original color space even if pixel format is RGB to compute overbrights */
262  s->coeffs = &luma_coefficients[in->colorspace];
263  if (s->desat > 0 && (in->colorspace == AVCOL_SPC_UNSPECIFIED || !s->coeffs)) {
265  av_log(s, AV_LOG_WARNING, "Missing color space information, ");
266  else if (!s->coeffs)
267  av_log(s, AV_LOG_WARNING, "Unsupported color space '%s', ",
269  av_log(s, AV_LOG_WARNING, "desaturation is disabled\n");
270  s->desat = 0;
271  }
272 
273  /* do the tone map */
274  td.out = out;
275  td.in = in;
276  td.desc = desc;
277  td.peak = peak;
279 
280  /* copy/generate alpha if needed */
281  if (desc->flags & AV_PIX_FMT_FLAG_ALPHA && odesc->flags & AV_PIX_FMT_FLAG_ALPHA) {
282  av_image_copy_plane(out->data[3], out->linesize[3],
283  in->data[3], in->linesize[3],
284  out->linesize[3], outlink->h);
285  } else if (odesc->flags & AV_PIX_FMT_FLAG_ALPHA) {
286  for (y = 0; y < out->height; y++) {
287  for (x = 0; x < out->width; x++) {
288  AV_WN32(out->data[3] + x * odesc->comp[3].step + y * out->linesize[3],
289  av_float2int(1.0f));
290  }
291  }
292  }
293 
294  av_frame_free(&in);
295 
296  ff_update_hdr_metadata(out, peak);
297 
298  return ff_filter_frame(outlink, out);
299 }
300 
301 #define OFFSET(x) offsetof(TonemapContext, x)
302 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
303 static const AVOption tonemap_options[] = {
304  { "tonemap", "tonemap algorithm selection", OFFSET(tonemap), AV_OPT_TYPE_INT, {.i64 = TONEMAP_NONE}, TONEMAP_NONE, TONEMAP_MAX - 1, FLAGS, "tonemap" },
305  { "none", 0, 0, AV_OPT_TYPE_CONST, {.i64 = TONEMAP_NONE}, 0, 0, FLAGS, "tonemap" },
306  { "linear", 0, 0, AV_OPT_TYPE_CONST, {.i64 = TONEMAP_LINEAR}, 0, 0, FLAGS, "tonemap" },
307  { "gamma", 0, 0, AV_OPT_TYPE_CONST, {.i64 = TONEMAP_GAMMA}, 0, 0, FLAGS, "tonemap" },
308  { "clip", 0, 0, AV_OPT_TYPE_CONST, {.i64 = TONEMAP_CLIP}, 0, 0, FLAGS, "tonemap" },
309  { "reinhard", 0, 0, AV_OPT_TYPE_CONST, {.i64 = TONEMAP_REINHARD}, 0, 0, FLAGS, "tonemap" },
310  { "hable", 0, 0, AV_OPT_TYPE_CONST, {.i64 = TONEMAP_HABLE}, 0, 0, FLAGS, "tonemap" },
311  { "mobius", 0, 0, AV_OPT_TYPE_CONST, {.i64 = TONEMAP_MOBIUS}, 0, 0, FLAGS, "tonemap" },
312  { "param", "tonemap parameter", OFFSET(param), AV_OPT_TYPE_DOUBLE, {.dbl = NAN}, DBL_MIN, DBL_MAX, FLAGS },
313  { "desat", "desaturation strength", OFFSET(desat), AV_OPT_TYPE_DOUBLE, {.dbl = 2}, 0, DBL_MAX, FLAGS },
314  { "peak", "signal peak override", OFFSET(peak), AV_OPT_TYPE_DOUBLE, {.dbl = 0}, 0, DBL_MAX, FLAGS },
315  { NULL }
316 };
317 
319 
320 static const AVFilterPad tonemap_inputs[] = {
321  {
322  .name = "default",
323  .type = AVMEDIA_TYPE_VIDEO,
324  .filter_frame = filter_frame,
325  },
326  { NULL }
327 };
328 
329 static const AVFilterPad tonemap_outputs[] = {
330  {
331  .name = "default",
332  .type = AVMEDIA_TYPE_VIDEO,
333  },
334  { NULL }
335 };
336 
338  .name = "tonemap",
339  .description = NULL_IF_CONFIG_SMALL("Conversion to/from different dynamic ranges."),
340  .init = init,
341  .query_formats = query_formats,
342  .priv_size = sizeof(TonemapContext),
343  .priv_class = &tonemap_class,
344  .inputs = tonemap_inputs,
345  .outputs = tonemap_outputs,
347 };
also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / SMPTE RP177 Annex B
Definition: pixfmt.h:498
#define NULL
Definition: coverity.c:32
AVFrame * out
Definition: af_adeclick.c:488
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2522
This structure describes decoded (raw) audio or video data.
Definition: frame.h:295
AVOption.
Definition: opt.h:246
"Linear transfer characteristics"
Definition: pixfmt.h:476
misc image utilities
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
Main libavfilter public API header.
const char * desc
Definition: nvenc.c:68
also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM / IEC 61966-2-4 xvYCC601 ...
Definition: pixfmt.h:502
#define MIX(x, y, a)
Definition: vf_tonemap.c:129
const char * b
Definition: vf_curves.c:116
also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC
Definition: pixfmt.h:503
const struct LumaCoefficients * coeffs
Definition: vf_tonemap.c:71
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:99
functionally identical to above
Definition: pixfmt.h:504
const char * av_color_space_name(enum AVColorSpace space)
Definition: pixdesc.c:2915
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:283
const char * name
Pad name.
Definition: internal.h:60
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1080
double peak
Definition: vf_tonemap.c:197
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
#define av_cold
Definition: attributes.h:82
#define AV_PIX_FMT_FLAG_ALPHA
The pixel format has an alpha channel.
Definition: pixdesc.h:177
AVOptions.
#define f(width, name)
Definition: cbs_vp9.c:255
static int query_formats(AVFilterContext *ctx)
Definition: vf_tonemap.c:80
#define FLAGS
Definition: vf_tonemap.c:302
static const AVFilterPad tonemap_outputs[]
Definition: vf_tonemap.c:329
static const struct LumaCoefficients luma_coefficients[AVCOL_SPC_NB]
Definition: vf_tonemap.c:53
#define av_log(a,...)
static const AVOption tonemap_options[]
Definition: vf_tonemap.c:303
A filter pad used for either input or output.
Definition: internal.h:54
int width
Definition: frame.h:353
int 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:568
#define td
Definition: regdef.h:70
AVFILTER_DEFINE_CLASS(tonemap)
#define AVERROR(e)
Definition: error.h:43
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:202
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
void * priv
private data for use by the filter
Definition: avfilter.h:353
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:116
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
const char * arg
Definition: jacosubdec.c:66
enum AVColorSpace colorspace
YUV colorspace type.
Definition: frame.h:550
#define FFMAX(a, b)
Definition: common.h:94
common internal API header
uint64_t flags
Combination of AV_PIX_FMT_FLAG_...
Definition: pixdesc.h:106
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:802
#define NAN
Definition: mathematics.h:64
#define FFMIN(a, b)
Definition: common.h:96
static float hable(float in)
Definition: vf_tonemap.c:110
ITU-R BT2020 non-constant luminance system.
Definition: pixfmt.h:507
AVFormatContext * ctx
Definition: movenc.c:48
#define s(width, name)
Definition: cbs_vp9.c:257
static av_cold int init(AVFilterContext *ctx)
Definition: vf_tonemap.c:85
static const AVFilterPad inputs[]
Definition: af_acontrast.c:193
if(ret< 0)
Definition: vf_mcdeint.c:279
enum TonemapAlgorithm tonemap
Definition: vf_tonemap.c:66
FCC Title 47 Code of Federal Regulations 73.682 (a)(20)
Definition: pixfmt.h:501
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
void ff_update_hdr_metadata(AVFrame *in, double peak)
Definition: colorspace.c:193
Used for passing data between threads.
Definition: af_adeclick.c:487
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:326
double desat
Definition: vf_tonemap.c:68
AVFilter ff_vf_tonemap
Definition: vf_tonemap.c:337
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
TonemapAlgorithm
Definition: vf_tonemap.c:42
#define AVERROR_BUG
Internal bug, also see AVERROR_BUG2.
Definition: error.h:50
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(const int16_t *) pi >> 8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(const int32_t *) pi >> 24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) #define SET_CONV_FUNC_GROUP(ofmt, ifmt) static void set_generic_function(AudioConvert *ac) { } void ff_audio_convert_free(AudioConvert **ac) { if(! *ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);} AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, int sample_rate, int apply_map) { AudioConvert *ac;int in_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) return NULL;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);return NULL;} return ac;} in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar) { ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar ? ac->channels :1;} else if(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;else ac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);return ac;} int ff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in) { int use_generic=1;int len=in->nb_samples;int p;if(ac->dc) { av_log(ac->avr, AV_LOG_TRACE, "%d samples - audio_convert: %s to %s (dithered)\", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
Describe the class of an AVClass context structure.
Definition: log.h:67
Filter definition.
Definition: avfilter.h:144
static int tonemap_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_tonemap.c:200
#define isnan(x)
Definition: libm.h:340
const char * name
Filter name.
Definition: avfilter.h:148
static av_always_inline uint32_t av_float2int(float f)
Reinterpret a float as a 32-bit integer.
Definition: intfloat.h:50
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:350
static int filter_frame(AVFilterLink *link, AVFrame *in)
Definition: vf_tonemap.c:218
#define flags(name, subs,...)
Definition: cbs_av1.c:561
AVFilterInternal * internal
An opaque struct for libavfilter internal use.
Definition: avfilter.h:378
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:309
static enum AVPixelFormat pix_fmts[]
Definition: vf_tonemap.c:74
ITU-R BT2020 constant luminance system.
Definition: pixfmt.h:508
static float mobius(float in, float j, double peak)
Definition: vf_tonemap.c:116
#define AV_PIX_FMT_GBRPF32
Definition: pixfmt.h:416
#define AV_PIX_FMT_GBRAPF32
Definition: pixfmt.h:417
#define AV_WN32(p, v)
Definition: intreadwrite.h:376
static double c[64]
avfilter_execute_func * execute
Definition: internal.h:155
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
Handle slice ends.
Definition: mpeg12dec.c:2029
const AVPixFmtDescriptor * desc
Definition: vf_tonemap.c:196
An instance of a filter.
Definition: avfilter.h:338
int height
Definition: frame.h:353
FILE * out
Definition: movenc.c:54
enum AVColorTransferCharacteristic color_trc
Definition: frame.h:543
AVFrame * in
Definition: af_afftdn.c:1082
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:338
internal API functions
#define OFFSET(x)
Definition: vf_tonemap.c:301
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
static const AVFilterPad tonemap_inputs[]
Definition: vf_tonemap.c:320
double ff_determine_signal_peak(AVFrame *in)
Definition: colorspace.c:168
Not part of ABI.
Definition: pixfmt.h:513
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:654
#define FFMAX3(a, b, c)
Definition: common.h:95
int step
Number of elements between 2 horizontally consecutive pixels.
Definition: pixdesc.h:41
double param
Definition: vf_tonemap.c:67