FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
vf_midequalizer.c
Go to the documentation of this file.
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 
58 AVFILTER_DEFINE_CLASS(midequalizer);
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 
84 static int process_frame(FFFrameSync *fs)
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(in0->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 
240 static int config_input0(AVFilterLink *inlink)
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 
274 static int config_input1(AVFilterLink *inlink)
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;
310  outlink->time_base = in0->time_base;
312  outlink->frame_rate = in0->frame_rate;
313 
314  if ((ret = ff_framesync_init(&s->fs, ctx, 2)) < 0)
315  return ret;
316 
317  in = s->fs.in;
318  in[0].time_base = in0->time_base;
319  in[1].time_base = in1->time_base;
320  in[0].sync = 1;
321  in[0].before = EXT_STOP;
322  in[0].after = EXT_INFINITY;
323  in[1].sync = 1;
324  in[1].before = EXT_STOP;
325  in[1].after = EXT_INFINITY;
326  s->fs.opaque = s;
328 
329  return ff_framesync_configure(&s->fs);
330 }
331 
332 static int filter_frame(AVFilterLink *inlink, AVFrame *buf)
333 {
334  MidEqualizerContext *s = inlink->dst->priv;
335  return ff_framesync_filter_frame(&s->fs, inlink, buf);
336 }
337 
338 static int request_frame(AVFilterLink *outlink)
339 {
340  MidEqualizerContext *s = outlink->src->priv;
341  return ff_framesync_request_frame(&s->fs, outlink);
342 }
343 
345 {
346  MidEqualizerContext *s = ctx->priv;
347 
348  ff_framesync_uninit(&s->fs);
349  av_freep(&s->histogram[0]);
350  av_freep(&s->histogram[1]);
351  av_freep(&s->cchange);
352 }
353 
355  {
356  .name = "in0",
357  .type = AVMEDIA_TYPE_VIDEO,
358  .filter_frame = filter_frame,
359  .config_props = config_input0,
360  },
361  {
362  .name = "in1",
363  .type = AVMEDIA_TYPE_VIDEO,
364  .filter_frame = filter_frame,
365  .config_props = config_input1,
366  },
367  { NULL }
368 };
369 
371  {
372  .name = "default",
373  .type = AVMEDIA_TYPE_VIDEO,
374  .config_props = config_output,
375  .request_frame = request_frame,
376  },
377  { NULL }
378 };
379 
381  .name = "midequalizer",
382  .description = NULL_IF_CONFIG_SMALL("Apply Midway Equalization."),
383  .priv_size = sizeof(MidEqualizerContext),
384  .uninit = uninit,
386  .inputs = midequalizer_inputs,
387  .outputs = midequalizer_outputs,
388  .priv_class = &midequalizer_class,
390 };
#define OFFSET(x)
#define NULL
Definition: coverity.c:32
const char * s
Definition: avisynth_c.h:768
static int process_frame(FFFrameSync *fs)
#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:187
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:384
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:361
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:371
static int config_output(AVFilterLink *outlink)
#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
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2373
Main libavfilter public API header.
const char * desc
Definition: nvenc.c:60
int(* on_event)(struct FFFrameSync *fs)
Callback called when a frame event is ready.
Definition: framesync.h:175
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:180
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:367
static const AVFilterPad midequalizer_inputs[]
static int filter_frame(AVFilterLink *inlink, AVFrame *buf)
static const AVOption midequalizer_options[]
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:355
int ff_framesync_configure(FFFrameSync *fs)
Configure a frame sync structure.
Definition: framesync.c:80
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
int is_disabled
the enabled state from the last expression evaluation
Definition: avfilter.h:370
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:93
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:230
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
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:331
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1125
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:102
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
uint8_t
#define av_cold
Definition: attributes.h:82
AVOptions.
void * parent
Definition: framesync.h:155
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:271
FFFrameSyncIn * in
Pointer to array of inputs.
Definition: framesync.h:206
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:381
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:366
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range...
Definition: pixfmt.h:101
static int flags
Definition: log.c:57
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 query_formats(AVFilterContext *ctx)
enum FFFrameSyncExtMode after
Extrapolation mode for timestamps after the last frame.
Definition: framesync.h:98
Input stream structure.
Definition: framesync.h:83
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:356
#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
int ff_framesync_filter_frame(FFFrameSync *fs, AVFilterLink *inlink, AVFrame *in)
Accept a frame on a filter input.
Definition: framesync.c:303
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:188
#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:269
Frame sync structure.
Definition: framesync.h:153
#define AVERROR(e)
Definition: error.h:43
#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
AVRational time_base
Time base for the incoming frames.
Definition: framesync.h:103
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:354
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:66
static int config_input0(AVFilterLink *inlink)
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:349
#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:74
int ff_framesync_request_frame(FFFrameSync *fs, AVFilterLink *outlink)
Request a frame on the filter output.
Definition: framesync.c:317
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:165
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:386
static const AVFilterPad outputs[]
Definition: af_afftfilt.c:386
static int request_frame(AVFilterLink *outlink)
void * opaque
Opaque pointer, not used by the API.
Definition: framesync.h:180
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:350
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:369
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:485
static const AVFilterPad midequalizer_outputs[]
static const AVFilterPad inputs[]
Definition: af_afftfilt.c:376
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:359
Extend the frame to infinity.
Definition: framesync.h:77
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:218
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
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
void * buf
Definition: avisynth_c.h:690
int ff_framesync_init(FFFrameSync *fs, void *parent, unsigned nb_in)
Initialize a frame sync structure.
Definition: framesync.c:52
#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
unsigned sync
Synchronization level: frames on input at the highest sync level will generate output frame events...
Definition: framesync.h:146
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:348
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:335
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:262
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:360
#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:201
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:62
Y , 8bpp.
Definition: pixfmt.h:70
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
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)
Completely stop all streams with this one.
Definition: framesync.h:67
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
Definition: pixfmt.h:272
An instance of a filter.
Definition: avfilter.h:323
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:100
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:337
static int config_input1(AVFilterLink *inlink)
internal API functions
int ff_framesync_get_frame(FFFrameSync *fs, unsigned in, AVFrame **rframe, unsigned get)
Get the current frame in an input.
Definition: framesync.c:232
int depth
Number of bits in the component.
Definition: pixdesc.h:58
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:596
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58