FFmpeg
vf_unsharp.c
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1 /*
2  * Original copyright (c) 2002 Remi Guyomarch <rguyom@pobox.com>
3  * Port copyright (c) 2010 Daniel G. Taylor <dan@programmer-art.org>
4  * Relicensed to the LGPL with permission from Remi Guyomarch.
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 /**
24  * @file
25  * blur / sharpen filter, ported to FFmpeg from MPlayer
26  * libmpcodecs/unsharp.c.
27  *
28  * This code is based on:
29  *
30  * An Efficient algorithm for Gaussian blur using finite-state machines
31  * Frederick M. Waltz and John W. V. Miller
32  *
33  * SPIE Conf. on Machine Vision Systems for Inspection and Metrology VII
34  * Originally published Boston, Nov 98
35  *
36  * http://www.engin.umd.umich.edu/~jwvm/ece581/21_GBlur.pdf
37  */
38 
39 #include "avfilter.h"
40 #include "formats.h"
41 #include "internal.h"
42 #include "video.h"
43 #include "libavutil/common.h"
44 #include "libavutil/imgutils.h"
45 #include "libavutil/mem.h"
46 #include "libavutil/opt.h"
47 #include "libavutil/pixdesc.h"
48 #include "unsharp.h"
49 
50 typedef struct TheadData {
52  uint8_t *dst;
53  const uint8_t *src;
56  int width;
57  int height;
58 } ThreadData;
59 
60 static int unsharp_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
61 {
62  ThreadData *td = arg;
63  UnsharpFilterParam *fp = td->fp;
64  uint32_t **sc = fp->sc;
65  uint32_t *sr = fp->sr;
66  const uint8_t *src2 = NULL; //silence a warning
67  const int amount = fp->amount;
68  const int steps_x = fp->steps_x;
69  const int steps_y = fp->steps_y;
70  const int scalebits = fp->scalebits;
71  const int32_t halfscale = fp->halfscale;
72 
73  uint8_t *dst = td->dst;
74  const uint8_t *src = td->src;
75  const int dst_stride = td->dst_stride;
76  const int src_stride = td->src_stride;
77  const int width = td->width;
78  const int height = td->height;
79  const int sc_offset = jobnr * 2 * steps_y;
80  const int sr_offset = jobnr * (MAX_MATRIX_SIZE - 1);
81  const int slice_start = (height * jobnr) / nb_jobs;
82  const int slice_end = (height * (jobnr+1)) / nb_jobs;
83 
84  int32_t res;
85  int x, y, z;
86  uint32_t tmp1, tmp2;
87 
88  if (!amount) {
89  av_image_copy_plane(dst + slice_start * dst_stride, dst_stride,
90  src + slice_start * src_stride, src_stride,
91  width, slice_end - slice_start);
92  return 0;
93  }
94 
95  for (y = 0; y < 2 * steps_y; y++)
96  memset(sc[sc_offset + y], 0, sizeof(sc[y][0]) * (width + 2 * steps_x));
97 
98  // if this is not the first tile, we start from (slice_start - steps_y),
99  // so we can get smooth result at slice boundary
100  if (slice_start > steps_y) {
101  src += (slice_start - steps_y) * src_stride;
102  dst += (slice_start - steps_y) * dst_stride;
103  }
104 
105  for (y = -steps_y + slice_start; y < steps_y + slice_end; y++) {
106  if (y < height)
107  src2 = src;
108 
109  memset(sr + sr_offset, 0, sizeof(sr[0]) * (2 * steps_x - 1));
110  for (x = -steps_x; x < width + steps_x; x++) {
111  tmp1 = x <= 0 ? src2[0] : x >= width ? src2[width-1] : src2[x];
112  for (z = 0; z < steps_x * 2; z += 2) {
113  tmp2 = sr[sr_offset + z + 0] + tmp1; sr[sr_offset + z + 0] = tmp1;
114  tmp1 = sr[sr_offset + z + 1] + tmp2; sr[sr_offset + z + 1] = tmp2;
115  }
116  for (z = 0; z < steps_y * 2; z += 2) {
117  tmp2 = sc[sc_offset + z + 0][x + steps_x] + tmp1; sc[sc_offset + z + 0][x + steps_x] = tmp1;
118  tmp1 = sc[sc_offset + z + 1][x + steps_x] + tmp2; sc[sc_offset + z + 1][x + steps_x] = tmp2;
119  }
120  if (x >= steps_x && y >= (steps_y + slice_start)) {
121  const uint8_t *srx = src - steps_y * src_stride + x - steps_x;
122  uint8_t *dsx = dst - steps_y * dst_stride + x - steps_x;
123 
124  res = (int32_t)*srx + ((((int32_t) * srx - (int32_t)((tmp1 + halfscale) >> scalebits)) * amount) >> 16);
125  *dsx = av_clip_uint8(res);
126  }
127  }
128  if (y >= 0) {
129  dst += dst_stride;
130  src += src_stride;
131  }
132  }
133  return 0;
134 }
135 
137 {
138  AVFilterLink *inlink = ctx->inputs[0];
139  UnsharpContext *s = ctx->priv;
140  int i, plane_w[3], plane_h[3];
142  ThreadData td;
143 
144  plane_w[0] = inlink->w;
145  plane_w[1] = plane_w[2] = AV_CEIL_RSHIFT(inlink->w, s->hsub);
146  plane_h[0] = inlink->h;
147  plane_h[1] = plane_h[2] = AV_CEIL_RSHIFT(inlink->h, s->vsub);
148  fp[0] = &s->luma;
149  fp[1] = fp[2] = &s->chroma;
150  for (i = 0; i < 3; i++) {
151  td.fp = fp[i];
152  td.dst = out->data[i];
153  td.src = in->data[i];
154  td.width = plane_w[i];
155  td.height = plane_h[i];
156  td.dst_stride = out->linesize[i];
157  td.src_stride = in->linesize[i];
158  ctx->internal->execute(ctx, unsharp_slice, &td, NULL, FFMIN(plane_h[i], s->nb_threads));
159  }
160  return 0;
161 }
162 
163 static void set_filter_param(UnsharpFilterParam *fp, int msize_x, int msize_y, float amount)
164 {
165  fp->msize_x = msize_x;
166  fp->msize_y = msize_y;
167  fp->amount = amount * 65536.0;
168 
169  fp->steps_x = msize_x / 2;
170  fp->steps_y = msize_y / 2;
171  fp->scalebits = (fp->steps_x + fp->steps_y) * 2;
172  fp->halfscale = 1 << (fp->scalebits - 1);
173 }
174 
176 {
177  UnsharpContext *s = ctx->priv;
178 
179  set_filter_param(&s->luma, s->lmsize_x, s->lmsize_y, s->lamount);
181 
182  if (s->luma.scalebits >= 26 || s->chroma.scalebits >= 26) {
183  av_log(ctx, AV_LOG_ERROR, "luma or chroma matrix size too big\n");
184  return AVERROR(EINVAL);
185  }
187  return 0;
188 }
189 
191 {
192  static const enum AVPixelFormat pix_fmts[] = {
196  };
197 
198  AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
199  if (!fmts_list)
200  return AVERROR(ENOMEM);
201  return ff_set_common_formats(ctx, fmts_list);
202 }
203 
204 static int init_filter_param(AVFilterContext *ctx, UnsharpFilterParam *fp, const char *effect_type, int width)
205 {
206  int z;
207  UnsharpContext *s = ctx->priv;
208  const char *effect = fp->amount == 0 ? "none" : fp->amount < 0 ? "blur" : "sharpen";
209 
210  if (!(fp->msize_x & fp->msize_y & 1)) {
211  av_log(ctx, AV_LOG_ERROR,
212  "Invalid even size for %s matrix size %dx%d\n",
213  effect_type, fp->msize_x, fp->msize_y);
214  return AVERROR(EINVAL);
215  }
216 
217  av_log(ctx, AV_LOG_VERBOSE, "effect:%s type:%s msize_x:%d msize_y:%d amount:%0.2f\n",
218  effect, effect_type, fp->msize_x, fp->msize_y, fp->amount / 65535.0);
219 
220  fp->sr = av_malloc_array((MAX_MATRIX_SIZE - 1) * s->nb_threads, sizeof(uint32_t));
221  fp->sc = av_malloc_array(2 * fp->steps_y * s->nb_threads, sizeof(uint32_t **));
222  if (!fp->sr || !fp->sc)
223  return AVERROR(ENOMEM);
224 
225  for (z = 0; z < 2 * fp->steps_y * s->nb_threads; z++)
226  if (!(fp->sc[z] = av_malloc_array(width + 2 * fp->steps_x,
227  sizeof(*(fp->sc[z])))))
228  return AVERROR(ENOMEM);
229 
230  return 0;
231 }
232 
234 {
235  UnsharpContext *s = inlink->dst->priv;
237  int ret;
238 
239  s->hsub = desc->log2_chroma_w;
240  s->vsub = desc->log2_chroma_h;
241 
242  // ensure (height / nb_threads) > 4 * steps_y,
243  // so that we don't have too much overlap between two threads
245  inlink->h / (4 * s->luma.steps_y));
246 
247  ret = init_filter_param(inlink->dst, &s->luma, "luma", inlink->w);
248  if (ret < 0)
249  return ret;
250  ret = init_filter_param(inlink->dst, &s->chroma, "chroma", AV_CEIL_RSHIFT(inlink->w, s->hsub));
251  if (ret < 0)
252  return ret;
253 
254  return 0;
255 }
256 
257 static void free_filter_param(UnsharpFilterParam *fp, int nb_threads)
258 {
259  int z;
260 
261  for (z = 0; z < 2 * fp->steps_y * nb_threads; z++)
262  av_freep(&fp->sc[z]);
263  av_freep(&fp->sc);
264  av_freep(&fp->sr);
265 }
266 
268 {
269  UnsharpContext *s = ctx->priv;
270 
273 }
274 
276 {
277  UnsharpContext *s = link->dst->priv;
278  AVFilterLink *outlink = link->dst->outputs[0];
279  AVFrame *out;
280  int ret = 0;
281 
282  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
283  if (!out) {
284  av_frame_free(&in);
285  return AVERROR(ENOMEM);
286  }
287  av_frame_copy_props(out, in);
288 
289  ret = s->apply_unsharp(link->dst, in, out);
290 
291  av_frame_free(&in);
292 
293  if (ret < 0) {
294  av_frame_free(&out);
295  return ret;
296  }
297  return ff_filter_frame(outlink, out);
298 }
299 
300 #define OFFSET(x) offsetof(UnsharpContext, x)
301 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
302 #define MIN_SIZE 3
303 #define MAX_SIZE 23
304 static const AVOption unsharp_options[] = {
305  { "luma_msize_x", "set luma matrix horizontal size", OFFSET(lmsize_x), AV_OPT_TYPE_INT, { .i64 = 5 }, MIN_SIZE, MAX_SIZE, FLAGS },
306  { "lx", "set luma matrix horizontal size", OFFSET(lmsize_x), AV_OPT_TYPE_INT, { .i64 = 5 }, MIN_SIZE, MAX_SIZE, FLAGS },
307  { "luma_msize_y", "set luma matrix vertical size", OFFSET(lmsize_y), AV_OPT_TYPE_INT, { .i64 = 5 }, MIN_SIZE, MAX_SIZE, FLAGS },
308  { "ly", "set luma matrix vertical size", OFFSET(lmsize_y), AV_OPT_TYPE_INT, { .i64 = 5 }, MIN_SIZE, MAX_SIZE, FLAGS },
309  { "luma_amount", "set luma effect strength", OFFSET(lamount), AV_OPT_TYPE_FLOAT, { .dbl = 1 }, -2, 5, FLAGS },
310  { "la", "set luma effect strength", OFFSET(lamount), AV_OPT_TYPE_FLOAT, { .dbl = 1 }, -2, 5, FLAGS },
311  { "chroma_msize_x", "set chroma matrix horizontal size", OFFSET(cmsize_x), AV_OPT_TYPE_INT, { .i64 = 5 }, MIN_SIZE, MAX_SIZE, FLAGS },
312  { "cx", "set chroma matrix horizontal size", OFFSET(cmsize_x), AV_OPT_TYPE_INT, { .i64 = 5 }, MIN_SIZE, MAX_SIZE, FLAGS },
313  { "chroma_msize_y", "set chroma matrix vertical size", OFFSET(cmsize_y), AV_OPT_TYPE_INT, { .i64 = 5 }, MIN_SIZE, MAX_SIZE, FLAGS },
314  { "cy", "set chroma matrix vertical size", OFFSET(cmsize_y), AV_OPT_TYPE_INT, { .i64 = 5 }, MIN_SIZE, MAX_SIZE, FLAGS },
315  { "chroma_amount", "set chroma effect strength", OFFSET(camount), AV_OPT_TYPE_FLOAT, { .dbl = 0 }, -2, 5, FLAGS },
316  { "ca", "set chroma effect strength", OFFSET(camount), AV_OPT_TYPE_FLOAT, { .dbl = 0 }, -2, 5, FLAGS },
317  { "opencl", "ignored", OFFSET(opencl), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
318  { NULL }
319 };
320 
321 AVFILTER_DEFINE_CLASS(unsharp);
322 
324  {
325  .name = "default",
326  .type = AVMEDIA_TYPE_VIDEO,
327  .filter_frame = filter_frame,
328  .config_props = config_input,
329  },
330  { NULL }
331 };
332 
334  {
335  .name = "default",
336  .type = AVMEDIA_TYPE_VIDEO,
337  },
338  { NULL }
339 };
340 
342  .name = "unsharp",
343  .description = NULL_IF_CONFIG_SMALL("Sharpen or blur the input video."),
344  .priv_size = sizeof(UnsharpContext),
345  .priv_class = &unsharp_class,
346  .init = init,
347  .uninit = uninit,
349  .inputs = avfilter_vf_unsharp_inputs,
350  .outputs = avfilter_vf_unsharp_outputs,
352 };
#define NULL
Definition: coverity.c:32
static int unsharp_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_unsharp.c:60
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 const AVFilterPad avfilter_vf_unsharp_inputs[]
Definition: vf_unsharp.c:323
int lmsize_x
Definition: unsharp.h:46
AVOption.
Definition: opt.h:246
#define FLAGS
Definition: vf_unsharp.c:301
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
misc image utilities
Main libavfilter public API header.
Memory handling functions.
static void free_filter_param(UnsharpFilterParam *fp, int nb_threads)
Definition: vf_unsharp.c:257
const char * desc
Definition: nvenc.c:68
static av_cold int init(AVFilterContext *ctx)
Definition: vf_unsharp.c:175
UnsharpFilterParam luma
luma parameters (width, height, amount)
Definition: unsharp.h:48
int msize_y
matrix height
Definition: unsharp.h:34
float lamount
Definition: unsharp.h:47
uint32_t * sr
finite state machine storage within a row
Definition: unsharp.h:40
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
int src_stride
Definition: vf_unsharp.c:55
#define src
Definition: vp8dsp.c:254
#define MAX_SIZE
Definition: vf_unsharp.c:303
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:92
int(* apply_unsharp)(AVFilterContext *ctx, AVFrame *in, AVFrame *out)
Definition: unsharp.h:53
int lmsize_y
Definition: unsharp.h:46
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:283
#define AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
Some filters support a generic "enable" expression option that can be used to enable or disable a fil...
Definition: avfilter.h:125
const char * name
Pad name.
Definition: internal.h:60
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:346
int steps_x
horizontal step count
Definition: unsharp.h:36
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1093
uint8_t
#define av_cold
Definition: attributes.h:82
AVOptions.
#define OFFSET(x)
Definition: vf_unsharp.c:300
AVFilter ff_vf_unsharp
Definition: vf_unsharp.c:341
int height
Definition: vf_avgblur.c:61
static const AVFilterPad avfilter_vf_unsharp_outputs[]
Definition: vf_unsharp.c:333
#define height
AVFrame * dst
Definition: vf_blend.c:55
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_LOG_VERBOSE
Detailed information.
Definition: log.h:192
#define av_log(a,...)
A filter pad used for either input or output.
Definition: internal.h:54
int scalebits
bits to shift pixel
Definition: unsharp.h:38
#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
#define td
Definition: regdef.h:70
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:101
int32_t halfscale
amount to add to pixel
Definition: unsharp.h:39
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:202
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
#define MIN_SIZE
Definition: vf_unsharp.c:302
void * priv
private data for use by the filter
Definition: avfilter.h:353
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:116
const char * arg
Definition: jacosubdec.c:66
const uint8_t * src
Definition: vf_bm3d.c:56
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
int amount
effect amount
Definition: unsharp.h:35
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:802
#define FFMIN(a, b)
Definition: common.h:96
int cmsize_x
Definition: unsharp.h:46
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 width
uint32_t ** sc
finite state machine storage across rows
Definition: unsharp.h:41
float camount
Definition: unsharp.h:47
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_unsharp.c:267
int32_t
AVFormatContext * ctx
Definition: movenc.c:48
#define s(width, name)
Definition: cbs_vp9.c:257
static int apply_unsharp_c(AVFilterContext *ctx, AVFrame *in, AVFrame *out)
Definition: vf_unsharp.c:136
static int filter_frame(AVFilterLink *link, AVFrame *in)
Definition: vf_unsharp.c:275
static const AVOption unsharp_options[]
Definition: vf_unsharp.c:304
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
AVFILTER_DEFINE_CLASS(unsharp)
Used for passing data between threads.
Definition: dsddec.c:64
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:326
static int config_input(AVFilterLink *inlink)
Definition: vf_unsharp.c:233
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
int steps_y
vertical step count
Definition: unsharp.h:37
#define fp
Definition: regdef.h:44
int msize_x
matrix width
Definition: unsharp.h:33
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
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
Filter definition.
Definition: avfilter.h:144
static void set_filter_param(UnsharpFilterParam *fp, int msize_x, int msize_y, float amount)
Definition: vf_unsharp.c:163
static int init_filter_param(AVFilterContext *ctx, UnsharpFilterParam *fp, const char *effect_type, int width)
Definition: vf_unsharp.c:204
UnsharpFilterParam chroma
chroma parameters (width, height, amount)
Definition: unsharp.h:49
static int query_formats(AVFilterContext *ctx)
Definition: vf_unsharp.c:190
const char * name
Filter name.
Definition: avfilter.h:148
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 link
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:350
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:275
int cmsize_y
Definition: unsharp.h:46
#define flags(name, subs,...)
Definition: cbs_av1.c:561
AVFilterInternal * internal
An opaque struct for libavfilter internal use.
Definition: avfilter.h:378
#define MAX_MATRIX_SIZE
Definition: unsharp.h:29
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
common internal and external API header
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
avfilter_execute_func * execute
Definition: internal.h:155
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
Handle slice ends.
Definition: mpeg12dec.c:2036
A list of supported formats for one end of a filter link.
Definition: formats.h:64
An instance of a filter.
Definition: avfilter.h:338
FILE * out
Definition: movenc.c:54
#define av_freep(p)
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
#define av_malloc_array(a, b)
int dst_stride
Definition: vf_unsharp.c:54
void av_image_copy_plane(uint8_t *dst, int dst_linesize, const uint8_t *src, int src_linesize, int bytewidth, int height)
Copy image plane from src to dst.
Definition: imgutils.c:338
internal API functions
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
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
UnsharpFilterParam * fp
Definition: vf_unsharp.c:51
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:654
int nb_threads
Definition: unsharp.h:51
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58