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vf_datascope.c
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1 /*
2  * Copyright (c) 2016 Paul B Mahol
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include "libavutil/avassert.h"
22 #include "libavutil/intreadwrite.h"
23 #include "libavutil/opt.h"
24 #include "libavutil/parseutils.h"
25 #include "libavutil/pixdesc.h"
27 #include "avfilter.h"
28 #include "drawutils.h"
29 #include "formats.h"
30 #include "internal.h"
31 #include "video.h"
32 
33 typedef struct DatascopeContext {
34  const AVClass *class;
35  int ow, oh;
36  int x, y;
37  int mode;
38  int axis;
39 
40  int nb_planes;
41  int nb_comps;
42  int chars;
48 
49  int (*filter)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
51 
52 #define OFFSET(x) offsetof(DatascopeContext, x)
53 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
54 
55 static const AVOption datascope_options[] = {
56  { "size", "set output size", OFFSET(ow), AV_OPT_TYPE_IMAGE_SIZE, {.str="hd720"}, 0, 0, FLAGS },
57  { "s", "set output size", OFFSET(ow), AV_OPT_TYPE_IMAGE_SIZE, {.str="hd720"}, 0, 0, FLAGS },
58  { "x", "set x offset", OFFSET(x), AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, FLAGS },
59  { "y", "set y offset", OFFSET(y), AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, FLAGS },
60  { "mode", "set scope mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=0}, 0, 2, FLAGS, "mode" },
61  { "mono", NULL, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "mode" },
62  { "color", NULL, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "mode" },
63  { "color2", NULL, 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, FLAGS, "mode" },
64  { "axis", "draw column/row numbers", OFFSET(axis), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS },
65  { NULL }
66 };
67 
68 AVFILTER_DEFINE_CLASS(datascope);
69 
71 {
73 }
74 
76  int x0, int y0, const uint8_t *text, int vertical)
77 {
78  int x = x0;
79 
80  for (; *text; text++) {
81  if (*text == '\n') {
82  x = x0;
83  y0 += 8;
84  continue;
85  }
86  ff_blend_mask(&s->draw, color, frame->data, frame->linesize,
87  frame->width, frame->height,
88  avpriv_cga_font + *text * 8, 1, 8, 8, 0, 0, x, y0);
89  if (vertical) {
90  x = x0;
91  y0 += 8;
92  } else {
93  x += 8;
94  }
95  }
96 }
97 
98 static void pick_color(FFDrawContext *draw, FFDrawColor *color, AVFrame *in, int x, int y, int *value)
99 {
100  int p, i;
101 
102  color->rgba[3] = 255;
103  for (p = 0; p < draw->nb_planes; p++) {
104  if (draw->desc->comp[p].depth == 8) {
105  if (draw->nb_planes == 1) {
106  for (i = 0; i < 4; i++) {
107  value[i] = in->data[0][y * in->linesize[0] + x * draw->pixelstep[0] + i];
108  color->comp[0].u8[i] = value[i];
109  }
110  } else {
111  value[p] = in->data[p][(y >> draw->vsub[p]) * in->linesize[p] + (x >> draw->hsub[p])];
112  color->comp[p].u8[0] = value[p];
113  }
114  } else {
115  if (draw->nb_planes == 1) {
116  for (i = 0; i < 4; i++) {
117  value[i] = AV_RL16(in->data[0] + y * in->linesize[0] + x * draw->pixelstep[0] + i * 2);
118  color->comp[0].u16[i] = value[i];
119  }
120  } else {
121  value[p] = AV_RL16(in->data[p] + (y >> draw->vsub[p]) * in->linesize[p] + (x >> draw->hsub[p]) * 2);
122  color->comp[p].u16[0] = value[p];
123  }
124  }
125  }
126 }
127 
129 {
130  int p;
131 
132  reverse->rgba[3] = 255;
133  for (p = 0; p < draw->nb_planes; p++) {
134  if (draw->desc->comp[p].depth == 8) {
135  reverse->comp[p].u8[0] = color->comp[p].u8[0] > 127 ? 0 : 255;
136  reverse->comp[p].u8[1] = color->comp[p].u8[1] > 127 ? 0 : 255;
137  reverse->comp[p].u8[2] = color->comp[p].u8[2] > 127 ? 0 : 255;
138  reverse->comp[p].u8[3] = color->comp[p].u8[3] > 127 ? 0 : 255;
139  } else {
140  const unsigned max = (1 << draw->desc->comp[p].depth) - 1;
141  const unsigned mid = (max + 1) / 2;
142 
143  reverse->comp[p].u16[0] = color->comp[p].u16[0] > mid ? 0 : max;
144  reverse->comp[p].u16[1] = color->comp[p].u16[1] > mid ? 0 : max;
145  reverse->comp[p].u16[2] = color->comp[p].u16[2] > mid ? 0 : max;
146  reverse->comp[p].u16[3] = color->comp[p].u16[3] > mid ? 0 : max;
147  }
148  }
149 }
150 
151 typedef struct ThreadData {
152  AVFrame *in, *out;
153  int xoff, yoff;
154 } ThreadData;
155 
156 static int filter_color2(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
157 {
158  DatascopeContext *s = ctx->priv;
159  AVFilterLink *outlink = ctx->outputs[0];
160  AVFilterLink *inlink = ctx->inputs[0];
161  ThreadData *td = arg;
162  AVFrame *in = td->in;
163  AVFrame *out = td->out;
164  const int xoff = td->xoff;
165  const int yoff = td->yoff;
166  const int P = FFMAX(s->nb_planes, s->nb_comps);
167  const int C = s->chars;
168  const int W = (outlink->w - xoff) / (C * 10);
169  const int H = (outlink->h - yoff) / (P * 12);
170  const char *format[2] = {"%02X\n", "%04X\n"};
171  const int slice_start = (W * jobnr) / nb_jobs;
172  const int slice_end = (W * (jobnr+1)) / nb_jobs;
173  int x, y, p;
174 
175  for (y = 0; y < H && (y + s->y < inlink->h); y++) {
176  for (x = slice_start; x < slice_end && (x + s->x < inlink->w); x++) {
177  FFDrawColor color = { { 0 } };
178  FFDrawColor reverse = { { 0 } };
179  int value[4] = { 0 };
180 
181  pick_color(&s->draw, &color, in, x + s->x, y + s->y, value);
182  reverse_color(&s->draw, &color, &reverse);
183  ff_fill_rectangle(&s->draw, &color, out->data, out->linesize,
184  xoff + x * C * 10, yoff + y * P * 12, C * 10, P * 12);
185 
186  for (p = 0; p < P; p++) {
187  char text[256];
188 
189  snprintf(text, sizeof(text), format[C>>2], value[p]);
190  draw_text(s, out, &reverse, xoff + x * C * 10 + 2, yoff + y * P * 12 + p * 10 + 2, text, 0);
191  }
192  }
193  }
194 
195  return 0;
196 }
197 
198 static int filter_color(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
199 {
200  DatascopeContext *s = ctx->priv;
201  AVFilterLink *outlink = ctx->outputs[0];
202  AVFilterLink *inlink = ctx->inputs[0];
203  ThreadData *td = arg;
204  AVFrame *in = td->in;
205  AVFrame *out = td->out;
206  const int xoff = td->xoff;
207  const int yoff = td->yoff;
208  const int P = FFMAX(s->nb_planes, s->nb_comps);
209  const int C = s->chars;
210  const int W = (outlink->w - xoff) / (C * 10);
211  const int H = (outlink->h - yoff) / (P * 12);
212  const char *format[2] = {"%02X\n", "%04X\n"};
213  const int slice_start = (W * jobnr) / nb_jobs;
214  const int slice_end = (W * (jobnr+1)) / nb_jobs;
215  int x, y, p;
216 
217  for (y = 0; y < H && (y + s->y < inlink->h); y++) {
218  for (x = slice_start; x < slice_end && (x + s->x < inlink->w); x++) {
219  FFDrawColor color = { { 0 } };
220  int value[4] = { 0 };
221 
222  pick_color(&s->draw, &color, in, x + s->x, y + s->y, value);
223 
224  for (p = 0; p < P; p++) {
225  char text[256];
226 
227  snprintf(text, sizeof(text), format[C>>2], value[p]);
228  draw_text(s, out, &color, xoff + x * C * 10 + 2, yoff + y * P * 12 + p * 10 + 2, text, 0);
229  }
230  }
231  }
232 
233  return 0;
234 }
235 
236 static int filter_mono(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
237 {
238  DatascopeContext *s = ctx->priv;
239  AVFilterLink *outlink = ctx->outputs[0];
240  AVFilterLink *inlink = ctx->inputs[0];
241  ThreadData *td = arg;
242  AVFrame *in = td->in;
243  AVFrame *out = td->out;
244  const int xoff = td->xoff;
245  const int yoff = td->yoff;
246  const int P = FFMAX(s->nb_planes, s->nb_comps);
247  const int C = s->chars;
248  const int W = (outlink->w - xoff) / (C * 10);
249  const int H = (outlink->h - yoff) / (P * 12);
250  const char *format[2] = {"%02X\n", "%04X\n"};
251  const int slice_start = (W * jobnr) / nb_jobs;
252  const int slice_end = (W * (jobnr+1)) / nb_jobs;
253  int x, y, p;
254 
255  for (y = 0; y < H && (y + s->y < inlink->h); y++) {
256  for (x = slice_start; x < slice_end && (x + s->x < inlink->w); x++) {
257  FFDrawColor color = { { 0 } };
258  int value[4] = { 0 };
259 
260  pick_color(&s->draw, &color, in, x + s->x, y + s->y, value);
261  for (p = 0; p < P; p++) {
262  char text[256];
263 
264  snprintf(text, sizeof(text), format[C>>2], value[p]);
265  draw_text(s, out, &s->white, xoff + x * C * 10 + 2, yoff + y * P * 12 + p * 10 + 2, text, 0);
266  }
267  }
268  }
269 
270  return 0;
271 }
272 
273 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
274 {
275  AVFilterContext *ctx = inlink->dst;
276  DatascopeContext *s = ctx->priv;
277  AVFilterLink *outlink = ctx->outputs[0];
278  ThreadData td = { 0 };
279  int ymaxlen = 0;
280  int xmaxlen = 0;
281  AVFrame *out;
282 
283  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
284  if (!out) {
285  av_frame_free(&in);
286  return AVERROR(ENOMEM);
287  }
288  out->pts = in->pts;
289 
290  ff_fill_rectangle(&s->draw, &s->black, out->data, out->linesize,
291  0, 0, outlink->w, outlink->h);
292 
293  if (s->axis) {
294  const int P = FFMAX(s->nb_planes, s->nb_comps);
295  const int C = s->chars;
296  int Y = outlink->h / (P * 12);
297  int X = outlink->w / (C * 10);
298  char text[256] = { 0 };
299  int x, y;
300 
301  snprintf(text, sizeof(text), "%d", s->y + Y);
302  ymaxlen = strlen(text);
303  ymaxlen *= 10;
304  snprintf(text, sizeof(text), "%d", s->x + X);
305  xmaxlen = strlen(text);
306  xmaxlen *= 10;
307 
308  Y = (outlink->h - xmaxlen) / (P * 12);
309  X = (outlink->w - ymaxlen) / (C * 10);
310 
311  for (y = 0; y < Y; y++) {
312  snprintf(text, sizeof(text), "%d", s->y + y);
313 
314  ff_fill_rectangle(&s->draw, &s->gray, out->data, out->linesize,
315  0, xmaxlen + y * P * 12 + (P + 1) * P - 2, ymaxlen, 10);
316 
317  draw_text(s, out, &s->yellow, 2, xmaxlen + y * P * 12 + (P + 1) * P, text, 0);
318  }
319 
320  for (x = 0; x < X; x++) {
321  snprintf(text, sizeof(text), "%d", s->x + x);
322 
323  ff_fill_rectangle(&s->draw, &s->gray, out->data, out->linesize,
324  ymaxlen + x * C * 10 + 2 * C - 2, 0, 10, xmaxlen);
325 
326  draw_text(s, out, &s->yellow, ymaxlen + x * C * 10 + 2 * C, 2, text, 1);
327  }
328  }
329 
330  td.in = in; td.out = out, td.yoff = xmaxlen, td.xoff = ymaxlen;
331  ctx->internal->execute(ctx, s->filter, &td, NULL, FFMIN(ctx->graph->nb_threads, FFMAX(outlink->w / 20, 1)));
332 
333  av_frame_free(&in);
334  return ff_filter_frame(outlink, out);
335 }
336 
337 static int config_input(AVFilterLink *inlink)
338 {
339  DatascopeContext *s = inlink->dst->priv;
340 
342  ff_draw_init(&s->draw, inlink->format, 0);
343  ff_draw_color(&s->draw, &s->white, (uint8_t[]){ 255, 255, 255, 255} );
344  ff_draw_color(&s->draw, &s->black, (uint8_t[]){ 0, 0, 0, 0} );
345  ff_draw_color(&s->draw, &s->yellow, (uint8_t[]){ 255, 255, 0, 255} );
346  ff_draw_color(&s->draw, &s->gray, (uint8_t[]){ 77, 77, 77, 255} );
347  s->chars = (s->draw.desc->comp[0].depth + 7) / 8 * 2;
348  s->nb_comps = s->draw.desc->nb_components;
349 
350  switch (s->mode) {
351  case 0: s->filter = filter_mono; break;
352  case 1: s->filter = filter_color; break;
353  case 2: s->filter = filter_color2; break;
354  }
355 
356  return 0;
357 }
358 
359 static int config_output(AVFilterLink *outlink)
360 {
361  DatascopeContext *s = outlink->src->priv;
362 
363  outlink->h = s->oh;
364  outlink->w = s->ow;
365  outlink->sample_aspect_ratio = (AVRational){1,1};
366 
367  return 0;
368 }
369 
370 static const AVFilterPad inputs[] = {
371  {
372  .name = "default",
373  .type = AVMEDIA_TYPE_VIDEO,
374  .filter_frame = filter_frame,
375  .config_props = config_input,
376  },
377  { NULL }
378 };
379 
380 static const AVFilterPad outputs[] = {
381  {
382  .name = "default",
383  .type = AVMEDIA_TYPE_VIDEO,
384  .config_props = config_output,
385  },
386  { NULL }
387 };
388 
390  .name = "datascope",
391  .description = NULL_IF_CONFIG_SMALL("Video data analysis."),
392  .priv_size = sizeof(DatascopeContext),
393  .priv_class = &datascope_class,
395  .inputs = inputs,
396  .outputs = outputs,
398 };
AVFilterFormats * ff_draw_supported_pixel_formats(unsigned flags)
Return the list of pixel formats supported by the draw functions.
Definition: drawutils.c:715
#define NULL
Definition: coverity.c:32
const char * s
Definition: avisynth_c.h:631
#define P
AVFrame * out
Definition: af_sofalizer.c:585
This structure describes decoded (raw) audio or video data.
Definition: frame.h:184
AVOption.
Definition: opt.h:245
#define C
uint16_t u16[8]
Definition: drawutils.h:64
uint8_t hsub[MAX_PLANES]
Definition: drawutils.h:54
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2262
Main libavfilter public API header.
static int filter_color2(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_datascope.c:156
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:76
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_RL16
Definition: bytestream.h:87
static int filter_mono(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_datascope.c:236
struct AVFilterGraph * graph
filtergraph this filter belongs to
Definition: avfilter.h:322
const char * name
Pad name.
Definition: internal.h:59
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:313
static void reverse_color(FFDrawContext *draw, FFDrawColor *color, FFDrawColor *reverse)
Definition: vf_datascope.c:128
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1180
AVFrame * in
Definition: af_sofalizer.c:585
#define OFFSET(x)
Definition: vf_datascope.c:52
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
uint8_t
mode
Definition: f_perms.c:27
FFDrawColor gray
Definition: vf_datascope.c:47
AVOptions.
#define Y
Definition: vf_boxblur.c:76
static int filter_color(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_datascope.c:198
#define H
Definition: swscale.c:354
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:268
int(* filter)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_datascope.c:49
static AVFrame * frame
int nb_threads
Maximum number of threads used by filters in this graph.
Definition: avfilter.h:804
static const AVFilterPad inputs[]
Definition: vf_datascope.c:370
A filter pad used for either input or output.
Definition: internal.h:53
static const AVOption datascope_options[]
Definition: vf_datascope.c:55
int width
width and height of the video frame
Definition: frame.h:236
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
#define td
Definition: regdef.h:70
const uint8_t avpriv_cga_font[2048]
Definition: xga_font_data.c:29
#define AVERROR(e)
Definition: error.h:43
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:153
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
void * priv
private data for use by the filter
Definition: avfilter.h:320
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:114
static void pick_color(FFDrawContext *draw, FFDrawColor *color, AVFrame *in, int x, int y, int *value)
Definition: vf_datascope.c:98
const char * arg
Definition: jacosubdec.c:66
void ff_draw_color(FFDrawContext *draw, FFDrawColor *color, const uint8_t rgba[4])
Prepare a color.
Definition: drawutils.c:221
simple assert() macros that are a bit more flexible than ISO C assert().
#define FFMAX(a, b)
Definition: common.h:94
uint8_t u8[16]
Definition: drawutils.h:65
union FFDrawColor::@154 comp[MAX_PLANES]
FFDrawContext draw
Definition: vf_datascope.c:43
#define FFMIN(a, b)
Definition: common.h:96
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_datascope.c:273
static void draw_text(DatascopeContext *s, AVFrame *frame, FFDrawColor *color, int x0, int y0, const uint8_t *text, int vertical)
Definition: vf_datascope.c:75
GLsizei GLboolean const GLfloat * value
Definition: opengl_enc.c:109
AVFormatContext * ctx
Definition: movenc.c:48
static int config_input(AVFilterLink *inlink)
Definition: vf_datascope.c:337
static int query_formats(AVFilterContext *ctx)
Definition: vf_datascope.c:70
AVFILTER_DEFINE_CLASS(datascope)
#define FLAGS
Definition: vf_datascope.c:53
void ff_blend_mask(FFDrawContext *draw, FFDrawColor *color, uint8_t *dst[], int dst_linesize[], int dst_w, int dst_h, const uint8_t *mask, int mask_linesize, int mask_w, int mask_h, int l2depth, unsigned endianness, int x0, int y0)
Blend an alpha mask with an uniform color.
Definition: drawutils.c:607
static const AVFilterPad outputs[]
Definition: vf_datascope.c:380
misc drawing utilities
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:215
unsigned nb_planes
Definition: drawutils.h:51
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method!=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt)>2){ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc){av_free(ac);returnNULL;}returnac;}in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar){ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar?ac->channels:1;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> in
static const char * format
Definition: movenc.c:47
Describe the class of an AVClass context structure.
Definition: log.h:67
Filter definition.
Definition: avfilter.h:142
#define W(a, i, v)
Definition: jpegls.h:122
rational number numerator/denominator
Definition: rational.h:43
const char * name
Filter name.
Definition: avfilter.h:146
int ff_draw_init(FFDrawContext *draw, enum AVPixelFormat format, unsigned flags)
Init a draw context.
Definition: drawutils.c:176
#define snprintf
Definition: snprintf.h:34
offset must point to two consecutive integers
Definition: opt.h:232
misc parsing utilities
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:317
AVFilterInternal * internal
An opaque struct for libavfilter internal use.
Definition: avfilter.h:345
static int flags
Definition: cpu.c:47
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:198
FFDrawColor white
Definition: vf_datascope.c:45
static int config_output(AVFilterLink *outlink)
Definition: vf_datascope.c:359
avfilter_execute_func * execute
Definition: internal.h:153
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
Handle slice ends.
Definition: mpeg12dec.c:2051
FFDrawColor yellow
Definition: vf_datascope.c:44
FFDrawColor black
Definition: vf_datascope.c:46
AVFilter ff_vf_datascope
Definition: vf_datascope.c:389
int pixelstep[MAX_PLANES]
Definition: drawutils.h:52
const struct AVPixFmtDescriptor * desc
Definition: drawutils.h:49
void ff_fill_rectangle(FFDrawContext *draw, FFDrawColor *color, uint8_t *dst[], int dst_linesize[], int dst_x, int dst_y, int w, int h)
Fill a rectangle with an uniform color.
Definition: drawutils.c:304
An instance of a filter.
Definition: avfilter.h:305
int height
Definition: frame.h:236
FILE * out
Definition: movenc.c:54
uint8_t vsub[MAX_PLANES]
Definition: drawutils.h:55
internal API functions
int depth
Number of bits in the component.
Definition: pixdesc.h:58
CGA/EGA/VGA ROM font data.
uint8_t rgba[4]
Definition: drawutils.h:61