FFmpeg
vf_super2xsai.c
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1 /*
2  * Copyright (c) 2010 Niel van der Westhuizen <nielkie@gmail.com>
3  * Copyright (c) 2002 A'rpi
4  * Copyright (c) 1997-2001 ZSNES Team ( zsknight@zsnes.com / _demo_@zsnes.com )
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation; either version 2 of the License, or
11  * (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
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License along
19  * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
20  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
21  */
22 
23 /**
24  * @file
25  * Super 2xSaI video filter
26  * Ported from MPlayer libmpcodecs/vf_2xsai.c.
27  */
28 
29 #include "libavutil/pixdesc.h"
30 #include "libavutil/intreadwrite.h"
31 #include "avfilter.h"
32 #include "formats.h"
33 #include "internal.h"
34 #include "video.h"
35 
36 typedef struct Super2xSaIContext {
37  /* masks used for two pixels interpolation */
38  uint32_t hi_pixel_mask;
39  uint32_t lo_pixel_mask;
40 
41  /* masks used for four pixels interpolation */
42  uint32_t q_hi_pixel_mask;
43  uint32_t q_lo_pixel_mask;
44 
45  int bpp; ///< bytes per pixel, pixel stride for each (packed) pixel
46  int is_be;
48 
49 typedef struct ThreadData {
50  AVFrame *in, *out;
51 } ThreadData;
52 
53 #define GET_RESULT(A, B, C, D) ((A != C || A != D) - (B != C || B != D))
54 
55 #define INTERPOLATE(A, B) (((A & hi_pixel_mask) >> 1) + ((B & hi_pixel_mask) >> 1) + (A & B & lo_pixel_mask))
56 
57 #define Q_INTERPOLATE(A, B, C, D) ((A & q_hi_pixel_mask) >> 2) + ((B & q_hi_pixel_mask) >> 2) + ((C & q_hi_pixel_mask) >> 2) + ((D & q_hi_pixel_mask) >> 2) \
58  + ((((A & q_lo_pixel_mask) + (B & q_lo_pixel_mask) + (C & q_lo_pixel_mask) + (D & q_lo_pixel_mask)) >> 2) & q_lo_pixel_mask)
59 
60 static int super2xsai(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
61 {
62  Super2xSaIContext *s = ctx->priv;
63  ThreadData *td = arg;
64  AVFrame *in = td->in;
65  AVFrame *out = td->out;
66  const uint8_t *src = in->data[0];
67  uint8_t *dst = out->data[0];
68  const int src_linesize = in->linesize[0];
69  const int dst_linesize = out->linesize[0];
70  const int width = in->width;
71  const int height = in->height;
72  unsigned int x, y;
73  uint32_t color[4][4];
74  const uint8_t *src_line[4];
75  const int bpp = s->bpp;
76  const uint32_t hi_pixel_mask = s->hi_pixel_mask;
77  const uint32_t lo_pixel_mask = s->lo_pixel_mask;
78  const uint32_t q_hi_pixel_mask = s->q_hi_pixel_mask;
79  const uint32_t q_lo_pixel_mask = s->q_lo_pixel_mask;
80  const int slice_start = (height * jobnr) / nb_jobs;
81  const int slice_end = (height * (jobnr+1)) / nb_jobs;
82 
83  /* Point to the first 4 lines, first line is duplicated */
84  src_line[0] = src + src_linesize*FFMAX(slice_start - 1, 0);
85  src_line[1] = src + src_linesize*slice_start;
86  src_line[2] = src + src_linesize*FFMIN(slice_start + 1, height-1);
87  src_line[3] = src + src_linesize*FFMIN(slice_start + 2, height-1);
88 
89 #define READ_COLOR4(dst, src_line, off) dst = *((const uint32_t *)src_line + off)
90 #define READ_COLOR3(dst, src_line, off) dst = AV_RL24 (src_line + 3*off)
91 #define READ_COLOR2(dst, src_line, off) dst = s->is_be ? AV_RB16(src_line + 2 * off) : AV_RL16(src_line + 2 * off)
92 
93  for (y = slice_start; y < slice_end; y++) {
94  uint8_t *dst_line[2];
95 
96  dst_line[0] = dst + dst_linesize*2*y;
97  dst_line[1] = dst + dst_linesize*(2*y+1);
98 
99  switch (bpp) {
100  case 4:
101  READ_COLOR4(color[0][0], src_line[0], 0); color[0][1] = color[0][0]; READ_COLOR4(color[0][2], src_line[0], 1); READ_COLOR4(color[0][3], src_line[0], 2);
102  READ_COLOR4(color[1][0], src_line[1], 0); color[1][1] = color[1][0]; READ_COLOR4(color[1][2], src_line[1], 1); READ_COLOR4(color[1][3], src_line[1], 2);
103  READ_COLOR4(color[2][0], src_line[2], 0); color[2][1] = color[2][0]; READ_COLOR4(color[2][2], src_line[2], 1); READ_COLOR4(color[2][3], src_line[2], 2);
104  READ_COLOR4(color[3][0], src_line[3], 0); color[3][1] = color[3][0]; READ_COLOR4(color[3][2], src_line[3], 1); READ_COLOR4(color[3][3], src_line[3], 2);
105  break;
106  case 3:
107  READ_COLOR3(color[0][0], src_line[0], 0); color[0][1] = color[0][0]; READ_COLOR3(color[0][2], src_line[0], 1); READ_COLOR3(color[0][3], src_line[0], 2);
108  READ_COLOR3(color[1][0], src_line[1], 0); color[1][1] = color[1][0]; READ_COLOR3(color[1][2], src_line[1], 1); READ_COLOR3(color[1][3], src_line[1], 2);
109  READ_COLOR3(color[2][0], src_line[2], 0); color[2][1] = color[2][0]; READ_COLOR3(color[2][2], src_line[2], 1); READ_COLOR3(color[2][3], src_line[2], 2);
110  READ_COLOR3(color[3][0], src_line[3], 0); color[3][1] = color[3][0]; READ_COLOR3(color[3][2], src_line[3], 1); READ_COLOR3(color[3][3], src_line[3], 2);
111  break;
112  default:
113  READ_COLOR2(color[0][0], src_line[0], 0); color[0][1] = color[0][0]; READ_COLOR2(color[0][2], src_line[0], 1); READ_COLOR2(color[0][3], src_line[0], 2);
114  READ_COLOR2(color[1][0], src_line[1], 0); color[1][1] = color[1][0]; READ_COLOR2(color[1][2], src_line[1], 1); READ_COLOR2(color[1][3], src_line[1], 2);
115  READ_COLOR2(color[2][0], src_line[2], 0); color[2][1] = color[2][0]; READ_COLOR2(color[2][2], src_line[2], 1); READ_COLOR2(color[2][3], src_line[2], 2);
116  READ_COLOR2(color[3][0], src_line[3], 0); color[3][1] = color[3][0]; READ_COLOR2(color[3][2], src_line[3], 1); READ_COLOR2(color[3][3], src_line[3], 2);
117  }
118 
119  for (x = 0; x < width; x++) {
120  uint32_t product1a, product1b, product2a, product2b;
121 
122 //--------------------------------------- B0 B1 B2 B3 0 1 2 3
123 // 4 5* 6 S2 -> 4 5* 6 7
124 // 1 2 3 S1 8 9 10 11
125 // A0 A1 A2 A3 12 13 14 15
126 //--------------------------------------
127  if (color[2][1] == color[1][2] && color[1][1] != color[2][2]) {
128  product2b = color[2][1];
129  product1b = product2b;
130  } else if (color[1][1] == color[2][2] && color[2][1] != color[1][2]) {
131  product2b = color[1][1];
132  product1b = product2b;
133  } else if (color[1][1] == color[2][2] && color[2][1] == color[1][2]) {
134  int r = 0;
135 
136  r += GET_RESULT(color[1][2], color[1][1], color[1][0], color[3][1]);
137  r += GET_RESULT(color[1][2], color[1][1], color[2][0], color[0][1]);
138  r += GET_RESULT(color[1][2], color[1][1], color[3][2], color[2][3]);
139  r += GET_RESULT(color[1][2], color[1][1], color[0][2], color[1][3]);
140 
141  if (r > 0)
142  product1b = color[1][2];
143  else if (r < 0)
144  product1b = color[1][1];
145  else
146  product1b = INTERPOLATE(color[1][1], color[1][2]);
147 
148  product2b = product1b;
149  } else {
150  if (color[1][2] == color[2][2] && color[2][2] == color[3][1] && color[2][1] != color[3][2] && color[2][2] != color[3][0])
151  product2b = Q_INTERPOLATE(color[2][2], color[2][2], color[2][2], color[2][1]);
152  else if (color[1][1] == color[2][1] && color[2][1] == color[3][2] && color[3][1] != color[2][2] && color[2][1] != color[3][3])
153  product2b = Q_INTERPOLATE(color[2][1], color[2][1], color[2][1], color[2][2]);
154  else
155  product2b = INTERPOLATE(color[2][1], color[2][2]);
156 
157  if (color[1][2] == color[2][2] && color[1][2] == color[0][1] && color[1][1] != color[0][2] && color[1][2] != color[0][0])
158  product1b = Q_INTERPOLATE(color[1][2], color[1][2], color[1][2], color[1][1]);
159  else if (color[1][1] == color[2][1] && color[1][1] == color[0][2] && color[0][1] != color[1][2] && color[1][1] != color[0][3])
160  product1b = Q_INTERPOLATE(color[1][2], color[1][1], color[1][1], color[1][1]);
161  else
162  product1b = INTERPOLATE(color[1][1], color[1][2]);
163  }
164 
165  if (color[1][1] == color[2][2] && color[2][1] != color[1][2] && color[1][0] == color[1][1] && color[1][1] != color[3][2])
166  product2a = INTERPOLATE(color[2][1], color[1][1]);
167  else if (color[1][1] == color[2][0] && color[1][2] == color[1][1] && color[1][0] != color[2][1] && color[1][1] != color[3][0])
168  product2a = INTERPOLATE(color[2][1], color[1][1]);
169  else
170  product2a = color[2][1];
171 
172  if (color[2][1] == color[1][2] && color[1][1] != color[2][2] && color[2][0] == color[2][1] && color[2][1] != color[0][2])
173  product1a = INTERPOLATE(color[2][1], color[1][1]);
174  else if (color[1][0] == color[2][1] && color[2][2] == color[2][1] && color[2][0] != color[1][1] && color[2][1] != color[0][0])
175  product1a = INTERPOLATE(color[2][1], color[1][1]);
176  else
177  product1a = color[1][1];
178 
179  /* Set the calculated pixels */
180  switch (bpp) {
181  case 4:
182  AV_WN32A(dst_line[0] + x * 8, product1a);
183  AV_WN32A(dst_line[0] + x * 8 + 4, product1b);
184  AV_WN32A(dst_line[1] + x * 8, product2a);
185  AV_WN32A(dst_line[1] + x * 8 + 4, product2b);
186  break;
187  case 3:
188  AV_WL24(dst_line[0] + x * 6, product1a);
189  AV_WL24(dst_line[0] + x * 6 + 3, product1b);
190  AV_WL24(dst_line[1] + x * 6, product2a);
191  AV_WL24(dst_line[1] + x * 6 + 3, product2b);
192  break;
193  default: // bpp = 2
194  if (s->is_be) {
195  AV_WB32(dst_line[0] + x * 4, product1a | (product1b << 16));
196  AV_WB32(dst_line[1] + x * 4, product2a | (product2b << 16));
197  } else {
198  AV_WL32(dst_line[0] + x * 4, product1a | (product1b << 16));
199  AV_WL32(dst_line[1] + x * 4, product2a | (product2b << 16));
200  }
201  }
202 
203  /* Move color matrix forward */
204  color[0][0] = color[0][1]; color[0][1] = color[0][2]; color[0][2] = color[0][3];
205  color[1][0] = color[1][1]; color[1][1] = color[1][2]; color[1][2] = color[1][3];
206  color[2][0] = color[2][1]; color[2][1] = color[2][2]; color[2][2] = color[2][3];
207  color[3][0] = color[3][1]; color[3][1] = color[3][2]; color[3][2] = color[3][3];
208 
209  if (x < width - 3) {
210  x += 3;
211  switch (bpp) {
212  case 4:
213  READ_COLOR4(color[0][3], src_line[0], x);
214  READ_COLOR4(color[1][3], src_line[1], x);
215  READ_COLOR4(color[2][3], src_line[2], x);
216  READ_COLOR4(color[3][3], src_line[3], x);
217  break;
218  case 3:
219  READ_COLOR3(color[0][3], src_line[0], x);
220  READ_COLOR3(color[1][3], src_line[1], x);
221  READ_COLOR3(color[2][3], src_line[2], x);
222  READ_COLOR3(color[3][3], src_line[3], x);
223  break;
224  default: /* case 2 */
225  READ_COLOR2(color[0][3], src_line[0], x);
226  READ_COLOR2(color[1][3], src_line[1], x);
227  READ_COLOR2(color[2][3], src_line[2], x);
228  READ_COLOR2(color[3][3], src_line[3], x);
229  }
230  x -= 3;
231  }
232  }
233 
234  /* We're done with one line, so we shift the source lines up */
235  src_line[0] = src_line[1];
236  src_line[1] = src_line[2];
237  src_line[2] = src_line[3];
238 
239  /* Read next line */
240  src_line[3] = src_line[2];
241  if (y < height - 3)
242  src_line[3] += src_linesize;
243  } // y loop
244 
245  return 0;
246 }
247 
249 {
250  static const enum AVPixelFormat pix_fmts[] = {
256  };
257 
258  AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
259  if (!fmts_list)
260  return AVERROR(ENOMEM);
261  return ff_set_common_formats(ctx, fmts_list);
262 }
263 
265 {
266  Super2xSaIContext *s = inlink->dst->priv;
267 
268  s->hi_pixel_mask = 0xFEFEFEFE;
269  s->lo_pixel_mask = 0x01010101;
270  s->q_hi_pixel_mask = 0xFCFCFCFC;
271  s->q_lo_pixel_mask = 0x03030303;
272  s->bpp = 4;
273 
274  switch (inlink->format) {
275  case AV_PIX_FMT_RGB24:
276  case AV_PIX_FMT_BGR24:
277  s->bpp = 3;
278  break;
279 
280  case AV_PIX_FMT_RGB565BE:
281  case AV_PIX_FMT_BGR565BE:
282  s->is_be = 1;
283  case AV_PIX_FMT_RGB565LE:
284  case AV_PIX_FMT_BGR565LE:
285  s->hi_pixel_mask = 0xF7DEF7DE;
286  s->lo_pixel_mask = 0x08210821;
287  s->q_hi_pixel_mask = 0xE79CE79C;
288  s->q_lo_pixel_mask = 0x18631863;
289  s->bpp = 2;
290  break;
291 
292  case AV_PIX_FMT_BGR555BE:
293  case AV_PIX_FMT_RGB555BE:
294  s->is_be = 1;
295  case AV_PIX_FMT_BGR555LE:
296  case AV_PIX_FMT_RGB555LE:
297  s->hi_pixel_mask = 0x7BDE7BDE;
298  s->lo_pixel_mask = 0x04210421;
299  s->q_hi_pixel_mask = 0x739C739C;
300  s->q_lo_pixel_mask = 0x0C630C63;
301  s->bpp = 2;
302  break;
303  }
304 
305  return 0;
306 }
307 
308 static int config_output(AVFilterLink *outlink)
309 {
310  AVFilterLink *inlink = outlink->src->inputs[0];
311 
312  outlink->w = inlink->w*2;
313  outlink->h = inlink->h*2;
314 
315  av_log(inlink->dst, AV_LOG_VERBOSE, "fmt:%s size:%dx%d -> size:%dx%d\n",
316  av_get_pix_fmt_name(inlink->format),
317  inlink->w, inlink->h, outlink->w, outlink->h);
318 
319  return 0;
320 }
321 
323 {
324  AVFilterContext *ctx = inlink->dst;
325  AVFilterLink *outlink = ctx->outputs[0];
326  ThreadData td;
327  AVFrame *out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
328  if (!out) {
329  av_frame_free(&in);
330  return AVERROR(ENOMEM);
331  }
332  av_frame_copy_props(out, in);
333  out->width = outlink->w;
334  out->height = outlink->h;
335 
336  td.in = in, td.out = out;
337  ctx->internal->execute(ctx, super2xsai, &td, NULL, FFMIN(in->height, ff_filter_get_nb_threads(ctx)));
338 
339  av_frame_free(&in);
340  return ff_filter_frame(outlink, out);
341 }
342 
343 static const AVFilterPad super2xsai_inputs[] = {
344  {
345  .name = "default",
346  .type = AVMEDIA_TYPE_VIDEO,
347  .config_props = config_input,
348  .filter_frame = filter_frame,
349  },
350  { NULL }
351 };
352 
353 static const AVFilterPad super2xsai_outputs[] = {
354  {
355  .name = "default",
356  .type = AVMEDIA_TYPE_VIDEO,
357  .config_props = config_output,
358  },
359  { NULL }
360 };
361 
363  .name = "super2xsai",
364  .description = NULL_IF_CONFIG_SMALL("Scale the input by 2x using the Super2xSaI pixel art algorithm."),
365  .priv_size = sizeof(Super2xSaIContext),
367  .inputs = super2xsai_inputs,
368  .outputs = super2xsai_outputs,
370 };
#define NULL
Definition: coverity.c:32
AVFrame * out
Definition: af_adeclick.c:502
int bpp
bytes per pixel, pixel stride for each (packed) pixel
Definition: vf_super2xsai.c:45
uint32_t q_hi_pixel_mask
Definition: vf_super2xsai.c:42
static int super2xsai(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_super2xsai.c:60
This structure describes decoded (raw) audio or video data.
Definition: frame.h:318
Main libavfilter public API header.
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:68
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
#define READ_COLOR3(dst, src_line, off)
#define INTERPOLATE(A, B)
Definition: vf_super2xsai.c:55
packed RGB 5:5:5, 16bpp, (msb)1X 5R 5G 5B(lsb), little-endian, X=unused/undefined ...
Definition: pixfmt.h:108
packed BGR 5:6:5, 16bpp, (msb) 5B 6G 5R(lsb), little-endian
Definition: pixfmt.h:111
uint32_t q_lo_pixel_mask
Definition: vf_super2xsai.c:43
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 GET_RESULT(A, B, C, D)
Definition: vf_super2xsai.c:53
#define AV_WN32A(p, v)
Definition: intreadwrite.h:538
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:287
packed RGB 5:6:5, 16bpp, (msb) 5R 6G 5B(lsb), little-endian
Definition: pixfmt.h:106
const char * name
Pad name.
Definition: internal.h:60
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:349
#define AV_WL24(p, d)
Definition: intreadwrite.h:464
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1094
uint8_t
packed RGB 5:6:5, 16bpp, (msb) 5R 6G 5B(lsb), big-endian
Definition: pixfmt.h:105
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
Definition: pixfmt.h:94
#define height
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:210
#define av_log(a,...)
A filter pad used for either input or output.
Definition: internal.h:54
static int config_input(AVFilterLink *inlink)
#define src
Definition: vp8dsp.c:255
int width
Definition: frame.h:376
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:588
#define td
Definition: regdef.h:70
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:204
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:117
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
Definition: pixfmt.h:95
const char * r
Definition: vf_curves.c:116
void * priv
private data for use by the filter
Definition: avfilter.h:356
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:117
const char * arg
Definition: jacosubdec.c:66
#define READ_COLOR4(dst, src_line, off)
#define FFMAX(a, b)
Definition: common.h:103
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
Definition: pixfmt.h:92
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:93
static const AVFilterPad super2xsai_outputs[]
uint32_t lo_pixel_mask
Definition: vf_super2xsai.c:39
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
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:105
#define width
AVFormatContext * ctx
Definition: movenc.c:48
#define s(width, name)
Definition: cbs_vp9.c:257
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:69
packed BGR 5:6:5, 16bpp, (msb) 5B 6G 5R(lsb), big-endian
Definition: pixfmt.h:110
static int config_output(AVFilterLink *outlink)
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
#define READ_COLOR2(dst, src_line, off)
static const AVFilterPad super2xsai_inputs[]
Used for passing data between threads.
Definition: dsddec.c:67
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:349
AVFilter ff_vf_super2xsai
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
Filter definition.
Definition: avfilter.h:145
#define AV_WB32(p, v)
Definition: intreadwrite.h:419
uint32_t hi_pixel_mask
Definition: vf_super2xsai.c:38
const char * name
Filter name.
Definition: avfilter.h:149
packed BGR 5:5:5, 16bpp, (msb)1X 5B 5G 5R(lsb), little-endian, X=unused/undefined ...
Definition: pixfmt.h:113
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:353
#define Q_INTERPOLATE(A, B, C, D)
Definition: vf_super2xsai.c:57
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:303
#define flags(name, subs,...)
Definition: cbs_av1.c:561
AVFilterInternal * internal
An opaque struct for libavfilter internal use.
Definition: avfilter.h:381
packed RGB 5:5:5, 16bpp, (msb)1X 5R 5G 5B(lsb), big-endian , X=unused/undefined
Definition: pixfmt.h:107
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:332
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
static int query_formats(AVFilterContext *ctx)
avfilter_execute_func * execute
Definition: internal.h:136
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
Handle slice ends.
Definition: mpeg12dec.c:2032
A list of supported formats for one end of a filter link.
Definition: formats.h:65
An instance of a filter.
Definition: avfilter.h:341
packed BGR 5:5:5, 16bpp, (msb)1X 5B 5G 5R(lsb), big-endian , X=unused/undefined
Definition: pixfmt.h:112
int height
Definition: frame.h:376
FILE * out
Definition: movenc.c:54
AVFrame * in
Definition: af_adenorm.c:223
const char * av_get_pix_fmt_name(enum AVPixelFormat pix_fmt)
Return the short name for a pixel format, NULL in case pix_fmt is unknown.
Definition: pixdesc.c:2489
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
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:659
#define AV_WL32(p, v)
Definition: intreadwrite.h:426