FFmpeg
vf_midequalizer.c
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1 /*
2  * Copyright (c) 2017 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/imgutils.h"
22 #include "libavutil/pixdesc.h"
23 #include "libavutil/opt.h"
24 #include "avfilter.h"
25 #include "formats.h"
26 #include "internal.h"
27 #include "video.h"
28 #include "framesync.h"
29 
30 typedef struct MidEqualizerContext {
31  const AVClass *class;
32  int width[2][4], height[2][4];
33  int nb_planes;
34  int planes;
36  float *histogram[2];
37  unsigned *cchange;
39 
40  void (*midequalizer)(const uint8_t *in0, const uint8_t *in1,
41  uint8_t *dst,
42  ptrdiff_t linesize1, ptrdiff_t linesize2,
43  ptrdiff_t dlinesize,
44  int w0, int h0,
45  int w1, int h1,
46  float *histogram1, float *histogram2,
47  unsigned *cchange, size_t hsize);
49 
50 #define OFFSET(x) offsetof(MidEqualizerContext, x)
51 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
52 
53 static const AVOption midequalizer_options[] = {
54  { "planes", "set planes", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS },
55  { NULL }
56 };
57 
59 
61 {
62  static const enum AVPixelFormat pix_fmts[] = {
84  };
85 
86  return ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
87 }
88 
90 {
91  AVFilterContext *ctx = fs->parent;
93  AVFilterLink *outlink = ctx->outputs[0];
94  AVFrame *out, *in0, *in1;
95  int ret;
96 
97  if ((ret = ff_framesync_get_frame(&s->fs, 0, &in0, 0)) < 0 ||
98  (ret = ff_framesync_get_frame(&s->fs, 1, &in1, 0)) < 0)
99  return ret;
100 
101  if (ctx->is_disabled) {
102  out = av_frame_clone(in0);
103  if (!out)
104  return AVERROR(ENOMEM);
105  } else {
106  int p;
107 
108  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
109  if (!out)
110  return AVERROR(ENOMEM);
111  av_frame_copy_props(out, in0);
112 
113  for (p = 0; p < s->nb_planes; p++) {
114  if (!((1 << p) & s->planes)) {
115  av_image_copy_plane(out->data[p], out->linesize[p], in0->data[p], in0->linesize[p],
116  s->width[0][p] * (1 + (s->histogram_size > 256)), s->height[0][p]);
117  continue;
118  }
119 
120  s->midequalizer(in0->data[p], in1->data[p],
121  out->data[p],
122  in0->linesize[p], in1->linesize[p],
123  out->linesize[p],
124  s->width[0][p], s->height[0][p],
125  s->width[1][p], s->height[1][p],
126  s->histogram[0], s->histogram[1],
127  s->cchange, s->histogram_size);
128  }
129  }
130  out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
131 
132  return ff_filter_frame(outlink, out);
133 }
134 
135 static void compute_histogram8(const uint8_t *src, ptrdiff_t linesize,
136  int w, int h, float *histogram, size_t hsize)
137 {
138  int y, x;
139 
140  memset(histogram, 0, hsize * sizeof(*histogram));
141 
142  for (y = 0; y < h; y++) {
143  for (x = 0; x < w; x++) {
144  histogram[src[x]] += 1;
145  }
146  src += linesize;
147  }
148 
149  for (x = 0; x < hsize - 1; x++) {
150  histogram[x + 1] += histogram[x];
151  histogram[x] /= hsize;
152  }
153  histogram[x] /= hsize;
154 }
155 
156 static void compute_histogram16(const uint16_t *src, ptrdiff_t linesize,
157  int w, int h, float *histogram, size_t hsize)
158 {
159  int y, x;
160 
161  memset(histogram, 0, hsize * sizeof(*histogram));
162 
163  for (y = 0; y < h; y++) {
164  for (x = 0; x < w; x++) {
165  histogram[src[x]] += 1;
166  }
167  src += linesize;
168  }
169 
170  for (x = 0; x < hsize - 1; x++) {
171  histogram[x + 1] += histogram[x];
172  histogram[x] /= hsize;
173  }
174  histogram[x] /= hsize;
175 }
176 
177 static void compute_contrast_change(float *histogram1, float *histogram2,
178  unsigned *cchange, size_t hsize)
179 {
180  int i;
181 
182  for (i = 0; i < hsize; i++) {
183  int j;
184 
185  for (j = 0; j < hsize && histogram2[j] < histogram1[i]; j++);
186 
187  cchange[i] = (i + j) / 2;
188  }
189 }
190 
191 static void midequalizer8(const uint8_t *in0, const uint8_t *in1,
192  uint8_t *dst,
193  ptrdiff_t linesize1, ptrdiff_t linesize2,
194  ptrdiff_t dlinesize,
195  int w0, int h0,
196  int w1, int h1,
197  float *histogram1, float *histogram2,
198  unsigned *cchange,
199  size_t hsize)
200 {
201  int x, y;
202 
203  compute_histogram8(in0, linesize1, w0, h0, histogram1, hsize);
204  compute_histogram8(in1, linesize2, w1, h1, histogram2, hsize);
205 
206  compute_contrast_change(histogram1, histogram2, cchange, hsize);
207 
208  for (y = 0; y < h0; y++) {
209  for (x = 0; x < w0; x++) {
210  dst[x] = av_clip_uint8(cchange[in0[x]]);
211  }
212  dst += dlinesize;
213  in0 += linesize1;
214  }
215 }
216 
217 static void midequalizer16(const uint8_t *in0, const uint8_t *in1,
218  uint8_t *dst,
219  ptrdiff_t linesize1, ptrdiff_t linesize2,
220  ptrdiff_t dlinesize,
221  int w0, int h0,
222  int w1, int h1,
223  float *histogram1, float *histogram2,
224  unsigned *cchange,
225  size_t hsize)
226 {
227  const uint16_t *i = (const uint16_t *)in0;
228  uint16_t *d = (uint16_t *)dst;
229  int x, y;
230 
231  compute_histogram16(i, linesize1 / 2, w0, h0, histogram1, hsize);
232  compute_histogram16((const uint16_t *)in1, linesize2 / 2, w1, h1, histogram2, hsize);
233 
234  compute_contrast_change(histogram1, histogram2, cchange, hsize);
235 
236  for (y = 0; y < h0; y++) {
237  for (x = 0; x < w0; x++) {
238  d[x] = cchange[i[x]];
239  }
240  d += dlinesize / 2;
241  i += linesize1 / 2;
242  }
243 }
244 
246 {
247  AVFilterContext *ctx = inlink->dst;
248  MidEqualizerContext *s = ctx->priv;
250  int vsub, hsub;
251 
253 
254  hsub = desc->log2_chroma_w;
255  vsub = desc->log2_chroma_h;
256 
257  s->height[0][0] = s->height[0][3] = inlink->h;
258  s->width[0][0] = s->width[0][3] = inlink->w;
259  s->height[0][1] = s->height[0][2] = AV_CEIL_RSHIFT(inlink->h, vsub);
260  s->width[0][1] = s->width[0][2] = AV_CEIL_RSHIFT(inlink->w, hsub);
261 
262  s->histogram_size = 1 << desc->comp[0].depth;
263 
264  s->histogram[0] = av_calloc(s->histogram_size, sizeof(float));
265  s->histogram[1] = av_calloc(s->histogram_size, sizeof(float));
266  s->cchange = av_calloc(s->histogram_size, sizeof(unsigned));
267  if (!s->histogram[0] || !s->histogram[1] || !s->cchange)
268  return AVERROR(ENOMEM);
269 
270  if (s->histogram_size == 256) {
272  } else {
274  }
275 
276  return 0;
277 }
278 
280 {
281  AVFilterContext *ctx = inlink->dst;
282  MidEqualizerContext *s = ctx->priv;
284  int vsub, hsub;
285 
287 
288  hsub = desc->log2_chroma_w;
289  vsub = desc->log2_chroma_h;
290 
291  s->height[1][0] = s->height[1][3] = inlink->h;
292  s->width[1][0] = s->width[1][3] = inlink->w;
293  s->height[1][1] = s->height[1][2] = AV_CEIL_RSHIFT(inlink->h, vsub);
294  s->width[1][1] = s->width[1][2] = AV_CEIL_RSHIFT(inlink->w, hsub);
295 
296  return 0;
297 }
298 
299 static int config_output(AVFilterLink *outlink)
300 {
301  AVFilterContext *ctx = outlink->src;
302  MidEqualizerContext *s = ctx->priv;
303  AVFilterLink *in0 = ctx->inputs[0];
304  AVFilterLink *in1 = ctx->inputs[1];
305  FFFrameSyncIn *in;
306  int ret;
307 
308  if (in0->format != in1->format) {
309  av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n");
310  return AVERROR(EINVAL);
311  }
312 
313  outlink->w = in0->w;
314  outlink->h = in0->h;
316  outlink->frame_rate = in0->frame_rate;
317 
318  if ((ret = ff_framesync_init(&s->fs, ctx, 2)) < 0)
319  return ret;
320 
321  in = s->fs.in;
322  in[0].time_base = in0->time_base;
323  in[1].time_base = in1->time_base;
324  in[0].sync = 1;
325  in[0].before = EXT_STOP;
326  in[0].after = EXT_INFINITY;
327  in[1].sync = 1;
328  in[1].before = EXT_STOP;
329  in[1].after = EXT_INFINITY;
330  s->fs.opaque = s;
332 
333  ret = ff_framesync_configure(&s->fs);
334  outlink->time_base = s->fs.time_base;
335 
336  return ret;
337 }
338 
340 {
341  MidEqualizerContext *s = ctx->priv;
342  return ff_framesync_activate(&s->fs);
343 }
344 
346 {
347  MidEqualizerContext *s = ctx->priv;
348 
349  ff_framesync_uninit(&s->fs);
350  av_freep(&s->histogram[0]);
351  av_freep(&s->histogram[1]);
352  av_freep(&s->cchange);
353 }
354 
356  {
357  .name = "in0",
358  .type = AVMEDIA_TYPE_VIDEO,
359  .config_props = config_input0,
360  },
361  {
362  .name = "in1",
363  .type = AVMEDIA_TYPE_VIDEO,
364  .config_props = config_input1,
365  },
366  { NULL }
367 };
368 
370  {
371  .name = "default",
372  .type = AVMEDIA_TYPE_VIDEO,
373  .config_props = config_output,
374  },
375  { NULL }
376 };
377 
379  .name = "midequalizer",
380  .description = NULL_IF_CONFIG_SMALL("Apply Midway Equalization."),
381  .priv_size = sizeof(MidEqualizerContext),
382  .uninit = uninit,
384  .activate = activate,
385  .inputs = midequalizer_inputs,
386  .outputs = midequalizer_outputs,
387  .priv_class = &midequalizer_class,
389 };
#define OFFSET(x)
#define NULL
Definition: coverity.c:32
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:430
static int process_frame(FFFrameSync *fs)
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:422
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
static void compute_histogram16(const uint16_t *src, ptrdiff_t linesize, int w, int h, float *histogram, size_t hsize)
AVOption.
Definition: opt.h:246
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:424
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:397
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:407
static int config_output(AVFilterLink *outlink)
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:425
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
misc image utilities
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2562
Main libavfilter public API header.
const char * desc
Definition: nvenc.c:68
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:168
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:403
static const AVFilterPad midequalizer_inputs[]
static const AVOption midequalizer_options[]
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:367
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:391
int ff_framesync_configure(FFFrameSync *fs)
Configure a frame sync structure.
Definition: framesync.c:117
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
#define src
Definition: vp8dsp.c:254
static int activate(AVFilterContext *ctx)
int is_disabled
the enabled state from the last expression evaluation
Definition: avfilter.h:385
int64_t pts
Timestamp of the current event.
Definition: framesync.h:167
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:92
enum FFFrameSyncExtMode before
Extrapolation mode for timestamps before the first frame.
Definition: framesync.h:86
static void midequalizer8(const uint8_t *in0, const uint8_t *in1, uint8_t *dst, ptrdiff_t linesize1, ptrdiff_t linesize2, ptrdiff_t dlinesize, int w0, int h0, int w1, int h1, float *histogram1, float *histogram2, unsigned *cchange, size_t hsize)
void * av_calloc(size_t nmemb, size_t size)
Non-inlined equivalent of av_mallocz_array().
Definition: mem.c:244
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:283
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:368
const char * name
Pad name.
Definition: internal.h:60
AVFilterContext * parent
Parent filter context.
Definition: framesync.h:152
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:369
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:346
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1093
static void midequalizer16(const uint8_t *in0, const uint8_t *in1, uint8_t *dst, ptrdiff_t linesize1, ptrdiff_t linesize2, ptrdiff_t dlinesize, int w0, int h0, int w1, int h1, float *histogram1, float *histogram2, unsigned *cchange, size_t hsize)
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
uint8_t
#define av_cold
Definition: attributes.h:82
AVOptions.
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:388
FFFrameSyncIn * in
Pointer to array of inputs.
Definition: framesync.h:203
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:421
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:402
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range...
Definition: pixfmt.h:100
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:79
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:400
static int query_formats(AVFilterContext *ctx)
enum FFFrameSyncExtMode after
Extrapolation mode for timestamps after the last frame.
Definition: framesync.h:91
Input stream structure.
Definition: framesync.h:81
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:392
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:429
#define av_log(a,...)
A filter pad used for either input or output.
Definition: internal.h:54
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
Definition: mathematics.c:142
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:176
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:259
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
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:569
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:101
void ff_framesync_uninit(FFFrameSync *fs)
Free all memory currently allocated.
Definition: framesync.c:293
Frame sync structure.
Definition: framesync.h:146
#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 AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:431
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:408
AVRational time_base
Time base for the incoming frames.
Definition: framesync.h:96
int ff_framesync_activate(FFFrameSync *fs)
Examine the frames in the filter&#39;s input and try to produce output.
Definition: framesync.c:344
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:390
int(* on_event)(struct FFFrameSync *fs)
Callback called when a frame event is ready.
Definition: framesync.h:172
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:409
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
static int config_input0(AVFilterLink *inlink)
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:385
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:406
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:371
#define FLAGS
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:78
#define AV_PIX_FMT_YUVA444P12
Definition: pixfmt.h:428
uint8_t w
Definition: llviddspenc.c:38
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
AVFILTER_DEFINE_CLASS(midequalizer)
AVFormatContext * ctx
Definition: movenc.c:48
AVRational time_base
Time base for the output events.
Definition: framesync.h:162
#define s(width, name)
Definition: cbs_vp9.c:257
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:426
void * opaque
Opaque pointer, not used by the API.
Definition: framesync.h:177
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:386
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:405
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:540
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
static const AVFilterPad midequalizer_outputs[]
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:398
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:395
Extend the frame to infinity.
Definition: framesync.h:75
static void compute_histogram8(const uint8_t *src, ptrdiff_t linesize, int w, int h, float *histogram, size_t hsize)
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:326
int ff_framesync_init(FFFrameSync *fs, AVFilterContext *parent, unsigned nb_in)
Initialize a frame sync structure.
Definition: framesync.c:77
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:177
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
#define AV_PIX_FMT_GRAY14
Definition: pixfmt.h:370
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 inputs
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)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:387
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
unsigned sync
Synchronization level: frames on input at the highest sync level will generate output frame events...
Definition: framesync.h:139
Describe the class of an AVClass context structure.
Definition: log.h:67
Filter definition.
Definition: avfilter.h:144
static void compute_contrast_change(float *histogram1, float *histogram2, unsigned *cchange, size_t hsize)
const char * name
Filter name.
Definition: avfilter.h:148
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:384
static av_cold void uninit(AVFilterContext *ctx)
#define AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
Same as AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, except that the filter will have its filter_frame() c...
Definition: avfilter.h:133
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:350
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:275
void(* midequalizer)(const uint8_t *in0, const uint8_t *in1, uint8_t *dst, ptrdiff_t linesize1, ptrdiff_t linesize2, ptrdiff_t dlinesize, int w0, int h0, int w1, int h1, float *histogram1, float *histogram2, unsigned *cchange, size_t hsize)
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:396
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:404
#define flags(name, subs,...)
Definition: cbs_av1.c:561
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:388
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:394
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:309
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
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
Y , 8bpp.
Definition: pixfmt.h:74
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:215
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:423
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
Completely stop all streams with this one.
Definition: framesync.h:65
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
Definition: pixfmt.h:258
An instance of a filter.
Definition: avfilter.h:338
FILE * out
Definition: movenc.c:54
AVFilter ff_vf_midequalizer
#define av_freep(p)
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
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
static int config_input1(AVFilterLink *inlink)
internal API functions
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
int ff_framesync_get_frame(FFFrameSync *fs, unsigned in, AVFrame **rframe, unsigned get)
Get the current frame in an input.
Definition: framesync.c:256
int depth
Number of bits in the component.
Definition: pixdesc.h:58
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
static void hsub(htype *dst, const htype *src, int bins)
Definition: vf_median.c:74
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:399
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:654
#define AV_PIX_FMT_YUVA422P12
Definition: pixfmt.h:427
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58