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[] = {
79  };
80 
81  return ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
82 }
83 
85 {
86  AVFilterContext *ctx = fs->parent;
88  AVFilterLink *outlink = ctx->outputs[0];
89  AVFrame *out, *in0, *in1;
90  int ret;
91 
92  if ((ret = ff_framesync_get_frame(&s->fs, 0, &in0, 0)) < 0 ||
93  (ret = ff_framesync_get_frame(&s->fs, 1, &in1, 0)) < 0)
94  return ret;
95 
96  if (ctx->is_disabled) {
97  out = av_frame_clone(in0);
98  if (!out)
99  return AVERROR(ENOMEM);
100  } else {
101  int p;
102 
103  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
104  if (!out)
105  return AVERROR(ENOMEM);
106  av_frame_copy_props(out, in0);
107 
108  for (p = 0; p < s->nb_planes; p++) {
109  if (!((1 << p) & s->planes)) {
110  av_image_copy_plane(out->data[p], out->linesize[p], in0->data[p], in0->linesize[p],
111  s->width[0][p] * (1 + (s->histogram_size > 256)), s->height[0][p]);
112  continue;
113  }
114 
115  s->midequalizer(in0->data[p], in1->data[p],
116  out->data[p],
117  in0->linesize[p], in1->linesize[p],
118  out->linesize[p],
119  s->width[0][p], s->height[0][p],
120  s->width[1][p], s->height[1][p],
121  s->histogram[0], s->histogram[1],
122  s->cchange, s->histogram_size);
123  }
124  }
125  out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
126 
127  return ff_filter_frame(outlink, out);
128 }
129 
130 static void compute_histogram8(const uint8_t *src, ptrdiff_t linesize,
131  int w, int h, float *histogram, size_t hsize)
132 {
133  int y, x;
134 
135  memset(histogram, 0, hsize * sizeof(*histogram));
136 
137  for (y = 0; y < h; y++) {
138  for (x = 0; x < w; x++) {
139  histogram[src[x]] += 1;
140  }
141  src += linesize;
142  }
143 
144  for (x = 0; x < hsize - 1; x++) {
145  histogram[x + 1] += histogram[x];
146  histogram[x] /= hsize;
147  }
148  histogram[x] /= hsize;
149 }
150 
151 static void compute_histogram16(const uint16_t *src, ptrdiff_t linesize,
152  int w, int h, float *histogram, size_t hsize)
153 {
154  int y, x;
155 
156  memset(histogram, 0, hsize * sizeof(*histogram));
157 
158  for (y = 0; y < h; y++) {
159  for (x = 0; x < w; x++) {
160  histogram[src[x]] += 1;
161  }
162  src += linesize;
163  }
164 
165  for (x = 0; x < hsize - 1; x++) {
166  histogram[x + 1] += histogram[x];
167  histogram[x] /= hsize;
168  }
169  histogram[x] /= hsize;
170 }
171 
172 static void compute_contrast_change(float *histogram1, float *histogram2,
173  unsigned *cchange, size_t hsize)
174 {
175  int i;
176 
177  for (i = 0; i < hsize; i++) {
178  int j;
179 
180  for (j = 0; j < hsize && histogram2[j] < histogram1[i]; j++);
181 
182  cchange[i] = (i + j) / 2;
183  }
184 }
185 
186 static void midequalizer8(const uint8_t *in0, const uint8_t *in1,
187  uint8_t *dst,
188  ptrdiff_t linesize1, ptrdiff_t linesize2,
189  ptrdiff_t dlinesize,
190  int w0, int h0,
191  int w1, int h1,
192  float *histogram1, float *histogram2,
193  unsigned *cchange,
194  size_t hsize)
195 {
196  int x, y;
197 
198  compute_histogram8(in0, linesize1, w0, h0, histogram1, hsize);
199  compute_histogram8(in1, linesize2, w1, h1, histogram2, hsize);
200 
201  compute_contrast_change(histogram1, histogram2, cchange, hsize);
202 
203  for (y = 0; y < h0; y++) {
204  for (x = 0; x < w0; x++) {
205  dst[x] = av_clip_uint8(cchange[in0[x]]);
206  }
207  dst += dlinesize;
208  in0 += linesize1;
209  }
210 }
211 
212 static void midequalizer16(const uint8_t *in0, const uint8_t *in1,
213  uint8_t *dst,
214  ptrdiff_t linesize1, ptrdiff_t linesize2,
215  ptrdiff_t dlinesize,
216  int w0, int h0,
217  int w1, int h1,
218  float *histogram1, float *histogram2,
219  unsigned *cchange,
220  size_t hsize)
221 {
222  const uint16_t *i = (const uint16_t *)in0;
223  uint16_t *d = (uint16_t *)dst;
224  int x, y;
225 
226  compute_histogram16(i, linesize1 / 2, w0, h0, histogram1, hsize);
227  compute_histogram16((const uint16_t *)in1, linesize2 / 2, w1, h1, histogram2, hsize);
228 
229  compute_contrast_change(histogram1, histogram2, cchange, hsize);
230 
231  for (y = 0; y < h0; y++) {
232  for (x = 0; x < w0; x++) {
233  d[x] = cchange[i[x]];
234  }
235  d += dlinesize / 2;
236  i += linesize1 / 2;
237  }
238 }
239 
241 {
242  AVFilterContext *ctx = inlink->dst;
243  MidEqualizerContext *s = ctx->priv;
245  int vsub, hsub;
246 
248 
249  hsub = desc->log2_chroma_w;
250  vsub = desc->log2_chroma_h;
251 
252  s->height[0][0] = s->height[0][3] = inlink->h;
253  s->width[0][0] = s->width[0][3] = inlink->w;
254  s->height[0][1] = s->height[0][2] = AV_CEIL_RSHIFT(inlink->h, vsub);
255  s->width[0][1] = s->width[0][2] = AV_CEIL_RSHIFT(inlink->w, hsub);
256 
257  s->histogram_size = 1 << desc->comp[0].depth;
258 
259  s->histogram[0] = av_calloc(s->histogram_size, sizeof(float));
260  s->histogram[1] = av_calloc(s->histogram_size, sizeof(float));
261  s->cchange = av_calloc(s->histogram_size, sizeof(unsigned));
262  if (!s->histogram[0] || !s->histogram[1] || !s->cchange)
263  return AVERROR(ENOMEM);
264 
265  if (s->histogram_size == 256) {
267  } else {
269  }
270 
271  return 0;
272 }
273 
275 {
276  AVFilterContext *ctx = inlink->dst;
277  MidEqualizerContext *s = ctx->priv;
279  int vsub, hsub;
280 
282 
283  hsub = desc->log2_chroma_w;
284  vsub = desc->log2_chroma_h;
285 
286  s->height[1][0] = s->height[1][3] = inlink->h;
287  s->width[1][0] = s->width[1][3] = inlink->w;
288  s->height[1][1] = s->height[1][2] = AV_CEIL_RSHIFT(inlink->h, vsub);
289  s->width[1][1] = s->width[1][2] = AV_CEIL_RSHIFT(inlink->w, hsub);
290 
291  return 0;
292 }
293 
294 static int config_output(AVFilterLink *outlink)
295 {
296  AVFilterContext *ctx = outlink->src;
297  MidEqualizerContext *s = ctx->priv;
298  AVFilterLink *in0 = ctx->inputs[0];
299  AVFilterLink *in1 = ctx->inputs[1];
300  FFFrameSyncIn *in;
301  int ret;
302 
303  if (in0->format != in1->format) {
304  av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n");
305  return AVERROR(EINVAL);
306  }
307 
308  outlink->w = in0->w;
309  outlink->h = in0->h;
311  outlink->frame_rate = in0->frame_rate;
312 
313  if ((ret = ff_framesync_init(&s->fs, ctx, 2)) < 0)
314  return ret;
315 
316  in = s->fs.in;
317  in[0].time_base = in0->time_base;
318  in[1].time_base = in1->time_base;
319  in[0].sync = 1;
320  in[0].before = EXT_STOP;
321  in[0].after = EXT_INFINITY;
322  in[1].sync = 1;
323  in[1].before = EXT_STOP;
324  in[1].after = EXT_INFINITY;
325  s->fs.opaque = s;
327 
328  ret = ff_framesync_configure(&s->fs);
329  outlink->time_base = s->fs.time_base;
330 
331  return ret;
332 }
333 
335 {
336  MidEqualizerContext *s = ctx->priv;
337  return ff_framesync_activate(&s->fs);
338 }
339 
341 {
342  MidEqualizerContext *s = ctx->priv;
343 
344  ff_framesync_uninit(&s->fs);
345  av_freep(&s->histogram[0]);
346  av_freep(&s->histogram[1]);
347  av_freep(&s->cchange);
348 }
349 
351  {
352  .name = "in0",
353  .type = AVMEDIA_TYPE_VIDEO,
354  .config_props = config_input0,
355  },
356  {
357  .name = "in1",
358  .type = AVMEDIA_TYPE_VIDEO,
359  .config_props = config_input1,
360  },
361  { NULL }
362 };
363 
365  {
366  .name = "default",
367  .type = AVMEDIA_TYPE_VIDEO,
368  .config_props = config_output,
369  },
370  { NULL }
371 };
372 
374  .name = "midequalizer",
375  .description = NULL_IF_CONFIG_SMALL("Apply Midway Equalization."),
376  .priv_size = sizeof(MidEqualizerContext),
377  .uninit = uninit,
379  .activate = activate,
380  .inputs = midequalizer_inputs,
381  .outputs = midequalizer_outputs,
382  .priv_class = &midequalizer_class,
384 };
#define OFFSET(x)
#define NULL
Definition: coverity.c:32
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:1080
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
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_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:568
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_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
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 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
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_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
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:654
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58