FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
vf_histogram.c
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2012-2013 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 "libavutil/avassert.h"
22 #include "libavutil/opt.h"
23 #include "libavutil/parseutils.h"
24 #include "libavutil/pixdesc.h"
25 #include "libavutil/imgutils.h"
26 #include "libavutil/intreadwrite.h"
27 #include "avfilter.h"
28 #include "formats.h"
29 #include "internal.h"
30 #include "video.h"
31 
32 typedef struct HistogramContext {
33  const AVClass *class; ///< AVClass context for log and options purpose
34  unsigned histogram[256*256];
36  int mult;
37  int ncomp;
38  int dncomp;
47  float fgopacity;
48  float bgopacity;
49  int planewidth[4];
50  int planeheight[4];
52 
53 #define OFFSET(x) offsetof(HistogramContext, x)
54 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
55 
56 static const AVOption histogram_options[] = {
57  { "level_height", "set level height", OFFSET(level_height), AV_OPT_TYPE_INT, {.i64=200}, 50, 2048, FLAGS},
58  { "scale_height", "set scale height", OFFSET(scale_height), AV_OPT_TYPE_INT, {.i64=12}, 0, 40, FLAGS},
59  { "display_mode", "set display mode", OFFSET(display_mode), AV_OPT_TYPE_INT, {.i64=2}, 0, 2, FLAGS, "display_mode"},
60  { "d", "set display mode", OFFSET(display_mode), AV_OPT_TYPE_INT, {.i64=2}, 0, 2, FLAGS, "display_mode"},
61  { "overlay", NULL, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "display_mode" },
62  { "parade", NULL, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "display_mode" },
63  { "stack", NULL, 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, FLAGS, "display_mode" },
64  { "levels_mode", "set levels mode", OFFSET(levels_mode), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS, "levels_mode"},
65  { "m", "set levels mode", OFFSET(levels_mode), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS, "levels_mode"},
66  { "linear", NULL, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "levels_mode" },
67  { "logarithmic", NULL, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "levels_mode" },
68  { "components", "set color components to display", OFFSET(components), AV_OPT_TYPE_INT, {.i64=7}, 1, 15, FLAGS},
69  { "c", "set color components to display", OFFSET(components), AV_OPT_TYPE_INT, {.i64=7}, 1, 15, FLAGS},
70  { "fgopacity", "set foreground opacity", OFFSET(fgopacity), AV_OPT_TYPE_FLOAT, {.dbl=0.7}, 0, 1, FLAGS},
71  { "f", "set foreground opacity", OFFSET(fgopacity), AV_OPT_TYPE_FLOAT, {.dbl=0.7}, 0, 1, FLAGS},
72  { "bgopacity", "set background opacity", OFFSET(bgopacity), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGS},
73  { "b", "set background opacity", OFFSET(bgopacity), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGS},
74  { NULL }
75 };
76 
77 AVFILTER_DEFINE_CLASS(histogram);
78 
79 static const enum AVPixelFormat levels_in_pix_fmts[] = {
95 };
96 
97 static const enum AVPixelFormat levels_out_yuv8_pix_fmts[] = {
100 };
101 
105 };
106 
110 };
111 
115 };
116 
120 };
121 
125 };
126 
130 };
131 
135 };
136 
138 {
139  AVFilterFormats *avff;
140  const AVPixFmtDescriptor *desc;
141  const enum AVPixelFormat *out_pix_fmts;
142  int rgb, i, bits;
143  int ret;
144 
145  if (!ctx->inputs[0]->in_formats ||
146  !ctx->inputs[0]->in_formats->nb_formats) {
147  return AVERROR(EAGAIN);
148  }
149 
150  if (!ctx->inputs[0]->out_formats)
152  return ret;
153  avff = ctx->inputs[0]->in_formats;
154  desc = av_pix_fmt_desc_get(avff->formats[0]);
155  rgb = desc->flags & AV_PIX_FMT_FLAG_RGB;
156  bits = desc->comp[0].depth;
157  for (i = 1; i < avff->nb_formats; i++) {
158  desc = av_pix_fmt_desc_get(avff->formats[i]);
159  if ((rgb != (desc->flags & AV_PIX_FMT_FLAG_RGB)) ||
160  (bits != desc->comp[0].depth))
161  return AVERROR(EAGAIN);
162  }
163 
164  if (rgb && bits == 8)
165  out_pix_fmts = levels_out_rgb8_pix_fmts;
166  else if (rgb && bits == 9)
167  out_pix_fmts = levels_out_rgb9_pix_fmts;
168  else if (rgb && bits == 10)
169  out_pix_fmts = levels_out_rgb10_pix_fmts;
170  else if (rgb && bits == 12)
171  out_pix_fmts = levels_out_rgb12_pix_fmts;
172  else if (bits == 8)
173  out_pix_fmts = levels_out_yuv8_pix_fmts;
174  else if (bits == 9)
175  out_pix_fmts = levels_out_yuv9_pix_fmts;
176  else if (bits == 10)
177  out_pix_fmts = levels_out_yuv10_pix_fmts;
178  else if (bits == 12)
179  out_pix_fmts = levels_out_yuv12_pix_fmts;
180  else
181  return AVERROR(EAGAIN);
182  if ((ret = ff_formats_ref(ff_make_format_list(out_pix_fmts), &ctx->outputs[0]->in_formats)) < 0)
183  return ret;
184 
185  return 0;
186 }
187 
188 static const uint8_t black_yuva_color[4] = { 0, 127, 127, 255 };
189 static const uint8_t black_gbrp_color[4] = { 0, 0, 0, 255 };
190 static const uint8_t white_yuva_color[4] = { 255, 127, 127, 255 };
191 static const uint8_t white_gbrp_color[4] = { 255, 255, 255, 255 };
192 
193 static int config_input(AVFilterLink *inlink)
194 {
195  HistogramContext *h = inlink->dst->priv;
196 
197  h->desc = av_pix_fmt_desc_get(inlink->format);
198  h->ncomp = h->desc->nb_components;
199  h->histogram_size = 1 << h->desc->comp[0].depth;
200  h->mult = h->histogram_size / 256;
201 
202  switch (inlink->format) {
203  case AV_PIX_FMT_GBRP12:
204  case AV_PIX_FMT_GBRP10:
205  case AV_PIX_FMT_GBRP9:
206  case AV_PIX_FMT_GBRAP:
207  case AV_PIX_FMT_GBRP:
208  memcpy(h->bg_color, black_gbrp_color, 4);
209  memcpy(h->fg_color, white_gbrp_color, 4);
210  break;
211  default:
212  memcpy(h->bg_color, black_yuva_color, 4);
213  memcpy(h->fg_color, white_yuva_color, 4);
214  }
215 
216  h->fg_color[3] = h->fgopacity * 255;
217  h->bg_color[3] = h->bgopacity * 255;
218 
219  h->planeheight[1] = h->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, h->desc->log2_chroma_h);
220  h->planeheight[0] = h->planeheight[3] = inlink->h;
221  h->planewidth[1] = h->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, h->desc->log2_chroma_w);
222  h->planewidth[0] = h->planewidth[3] = inlink->w;
223 
224  return 0;
225 }
226 
227 static int config_output(AVFilterLink *outlink)
228 {
229  AVFilterContext *ctx = outlink->src;
230  HistogramContext *h = ctx->priv;
231  int ncomp = 0, i;
232 
233  for (i = 0; i < h->ncomp; i++) {
234  if ((1 << i) & h->components)
235  ncomp++;
236  }
237  outlink->w = h->histogram_size * FFMAX(ncomp * (h->display_mode == 1), 1);
238  outlink->h = (h->level_height + h->scale_height) * FFMAX(ncomp * (h->display_mode == 2), 1);
239 
240  h->odesc = av_pix_fmt_desc_get(outlink->format);
241  h->dncomp = h->odesc->nb_components;
242  outlink->sample_aspect_ratio = (AVRational){1,1};
243 
244  return 0;
245 }
246 
247 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
248 {
249  HistogramContext *h = inlink->dst->priv;
250  AVFilterContext *ctx = inlink->dst;
251  AVFilterLink *outlink = ctx->outputs[0];
252  AVFrame *out;
253  int i, j, k, l, m;
254 
255  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
256  if (!out) {
257  av_frame_free(&in);
258  return AVERROR(ENOMEM);
259  }
260 
261  out->pts = in->pts;
262 
263  for (k = 0; k < 4 && out->data[k]; k++) {
264  const int is_chroma = (k == 1 || k == 2);
265  const int dst_h = AV_CEIL_RSHIFT(outlink->h, (is_chroma ? h->odesc->log2_chroma_h : 0));
266  const int dst_w = AV_CEIL_RSHIFT(outlink->w, (is_chroma ? h->odesc->log2_chroma_w : 0));
267 
268  if (h->histogram_size <= 256) {
269  for (i = 0; i < dst_h ; i++)
270  memset(out->data[h->odesc->comp[k].plane] +
271  i * out->linesize[h->odesc->comp[k].plane],
272  h->bg_color[k], dst_w);
273  } else {
274  const int mult = h->mult;
275 
276  for (i = 0; i < dst_h ; i++)
277  for (j = 0; j < dst_w; j++)
278  AV_WN16(out->data[h->odesc->comp[k].plane] +
279  i * out->linesize[h->odesc->comp[k].plane] + j * 2,
280  h->bg_color[k] * mult);
281  }
282  }
283 
284  for (m = 0, k = 0; k < h->ncomp; k++) {
285  const int p = h->desc->comp[k].plane;
286  const int height = h->planeheight[p];
287  const int width = h->planewidth[p];
288  double max_hval_log;
289  unsigned max_hval = 0;
290  int start, startx;
291 
292  if (!((1 << k) & h->components))
293  continue;
294  startx = m * h->histogram_size * (h->display_mode == 1);
295  start = m++ * (h->level_height + h->scale_height) * (h->display_mode == 2);
296 
297  if (h->histogram_size <= 256) {
298  for (i = 0; i < height; i++) {
299  const uint8_t *src = in->data[p] + i * in->linesize[p];
300  for (j = 0; j < width; j++)
301  h->histogram[src[j]]++;
302  }
303  } else {
304  for (i = 0; i < height; i++) {
305  const uint16_t *src = (const uint16_t *)(in->data[p] + i * in->linesize[p]);
306  for (j = 0; j < width; j++)
307  h->histogram[src[j]]++;
308  }
309  }
310 
311  for (i = 0; i < h->histogram_size; i++)
312  max_hval = FFMAX(max_hval, h->histogram[i]);
313  max_hval_log = log2(max_hval + 1);
314 
315  for (i = 0; i < h->histogram_size; i++) {
316  int col_height;
317 
318  if (h->levels_mode)
319  col_height = lrint(h->level_height * (1. - (log2(h->histogram[i] + 1) / max_hval_log)));
320  else
321  col_height = h->level_height - (h->histogram[i] * (int64_t)h->level_height + max_hval - 1) / max_hval;
322 
323  if (h->histogram_size <= 256) {
324  for (j = h->level_height - 1; j >= col_height; j--) {
325  if (h->display_mode) {
326  for (l = 0; l < h->dncomp; l++)
327  out->data[l][(j + start) * out->linesize[l] + startx + i] = h->fg_color[l];
328  } else {
329  out->data[p][(j + start) * out->linesize[p] + startx + i] = 255;
330  }
331  }
332  for (j = h->level_height + h->scale_height - 1; j >= h->level_height; j--)
333  out->data[p][(j + start) * out->linesize[p] + startx + i] = i;
334  } else {
335  const int mult = h->mult;
336 
337  for (j = h->level_height - 1; j >= col_height; j--) {
338  if (h->display_mode) {
339  for (l = 0; l < h->dncomp; l++)
340  AV_WN16(out->data[l] + (j + start) * out->linesize[l] + startx * 2 + i * 2, h->fg_color[l] * mult);
341  } else {
342  AV_WN16(out->data[p] + (j + start) * out->linesize[p] + startx * 2 + i * 2, 255 * mult);
343  }
344  }
345  for (j = h->level_height + h->scale_height - 1; j >= h->level_height; j--)
346  AV_WN16(out->data[p] + (j + start) * out->linesize[p] + startx * 2 + i * 2, i);
347  }
348  }
349 
350  memset(h->histogram, 0, h->histogram_size * sizeof(unsigned));
351  }
352 
353  av_frame_free(&in);
354  return ff_filter_frame(outlink, out);
355 }
356 
357 static const AVFilterPad inputs[] = {
358  {
359  .name = "default",
360  .type = AVMEDIA_TYPE_VIDEO,
361  .filter_frame = filter_frame,
362  .config_props = config_input,
363  },
364  { NULL }
365 };
366 
367 static const AVFilterPad outputs[] = {
368  {
369  .name = "default",
370  .type = AVMEDIA_TYPE_VIDEO,
371  .config_props = config_output,
372  },
373  { NULL }
374 };
375 
377  .name = "histogram",
378  .description = NULL_IF_CONFIG_SMALL("Compute and draw a histogram."),
379  .priv_size = sizeof(HistogramContext),
381  .inputs = inputs,
382  .outputs = outputs,
383  .priv_class = &histogram_class,
384 };
static enum AVPixelFormat levels_out_yuv8_pix_fmts[]
Definition: vf_histogram.c:97
int plane
Which of the 4 planes contains the component.
Definition: pixdesc.h:35
#define NULL
Definition: coverity.c:32
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:382
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2333
This structure describes decoded (raw) audio or video data.
Definition: frame.h:194
AVOption.
Definition: opt.h:246
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:384
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:385
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:67
misc image utilities
Main libavfilter public API header.
const char * desc
Definition: nvenc.c:60
unsigned histogram[256 *256]
Definition: vf_histogram.c:34
static enum AVPixelFormat levels_out_rgb8_pix_fmts[]
Definition: vf_histogram.c:117
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:180
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:367
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:355
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:92
#define src
Definition: vp8dsp.c:254
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:92
#define log2(x)
Definition: libm.h:404
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:283
static enum AVPixelFormat levels_out_rgb12_pix_fmts[]
Definition: vf_histogram.c:132
const char * name
Pad name.
Definition: internal.h:60
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:331
static const uint8_t black_gbrp_color[4]
Definition: vf_histogram.c:189
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1125
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:102
uint8_t bits
Definition: crc.c:296
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
uint8_t
AVOptions.
const AVPixFmtDescriptor * odesc
Definition: vf_histogram.c:45
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:287
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:381
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:366
#define height
static const AVFilterPad inputs[]
Definition: vf_histogram.c:357
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:75
static int config_input(AVFilterLink *inlink)
Definition: vf_histogram.c:193
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:356
static const AVFilterPad outputs[]
Definition: vf_histogram.c:367
A filter pad used for either input or output.
Definition: internal.h:54
static const uint8_t white_gbrp_color[4]
Definition: vf_histogram.c:191
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:188
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:101
#define AVERROR(e)
Definition: error.h:43
#define AV_PIX_FMT_FLAG_RGB
The pixel format contains RGB-like data (as opposed to YUV/grayscale).
Definition: pixdesc.h:148
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:163
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:179
void * priv
private data for use by the filter
Definition: avfilter.h:338
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:372
simple assert() macros that are a bit more flexible than ISO C assert().
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:354
#define OFFSET(x)
Definition: vf_histogram.c:53
#define FFMAX(a, b)
Definition: common.h:94
static enum AVPixelFormat levels_out_rgb10_pix_fmts[]
Definition: vf_histogram.c:127
static enum AVPixelFormat levels_in_pix_fmts[]
Definition: vf_histogram.c:79
uint8_t bg_color[4]
Definition: vf_histogram.c:39
AVFilter ff_vf_histogram
Definition: vf_histogram.c:376
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:66
uint64_t flags
Combination of AV_PIX_FMT_FLAG_...
Definition: pixdesc.h:106
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:349
uint8_t nb_components
The number of components each pixel has, (1-4)
Definition: pixdesc.h:83
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:74
#define width
int ff_formats_ref(AVFilterFormats *f, AVFilterFormats **ref)
Add *ref as a new reference to formats.
Definition: formats.c:440
AVFormatContext * ctx
Definition: movenc.c:48
unsigned nb_formats
number of formats
Definition: formats.h:65
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:386
static const AVOption histogram_options[]
Definition: vf_histogram.c:56
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:350
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:225
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:189
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
const AVPixFmtDescriptor * desc
Definition: vf_histogram.c:45
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){if(!*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));if(!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=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;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->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);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%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
static int config_output(AVFilterLink *outlink)
Definition: vf_histogram.c:227
static int16_t mult(Float11 *f1, Float11 *f2)
Definition: g726.c:55
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:351
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:68
Describe the class of an AVClass context structure.
Definition: log.h:67
Filter definition.
Definition: avfilter.h:144
Rational number (pair of numerator and denominator).
Definition: rational.h:58
static const uint8_t white_yuva_color[4]
Definition: vf_histogram.c:190
const char * name
Filter name.
Definition: avfilter.h:148
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:357
static enum AVPixelFormat levels_out_yuv12_pix_fmts[]
Definition: vf_histogram.c:112
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:348
misc parsing utilities
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:335
uint8_t fg_color[4]
Definition: vf_histogram.c:40
static enum AVPixelFormat levels_out_rgb9_pix_fmts[]
Definition: vf_histogram.c:122
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:368
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:352
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:358
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:208
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:62
Y , 8bpp.
Definition: pixfmt.h:70
AVFILTER_DEFINE_CLASS(histogram)
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:229
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:383
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:76
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:69
static enum AVPixelFormat out_pix_fmts[]
Definition: vf_ciescope.c:130
#define FLAGS
Definition: vf_histogram.c:54
static int query_formats(AVFilterContext *ctx)
Definition: vf_histogram.c:137
static const uint8_t black_yuva_color[4]
Definition: vf_histogram.c:188
static enum AVPixelFormat levels_out_yuv9_pix_fmts[]
Definition: vf_histogram.c:102
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_histogram.c:247
A list of supported formats for one end of a filter link.
Definition: formats.h:64
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
Definition: pixfmt.h:272
#define lrint
Definition: tablegen.h:53
An instance of a filter.
Definition: avfilter.h:323
FILE * out
Definition: movenc.c:54
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:100
void INT64 start
Definition: avisynth_c.h:690
#define AV_WN16(p, v)
Definition: intreadwrite.h:377
internal API functions
int depth
Number of bits in the component.
Definition: pixdesc.h:58
static enum AVPixelFormat levels_out_yuv10_pix_fmts[]
Definition: vf_histogram.c:107
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
int * formats
list of media formats
Definition: formats.h:66