vf_colormatrix.c
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1 /*
2  * ColorMatrix v2.2 for Avisynth 2.5.x
3  *
4  * Copyright (C) 2006-2007 Kevin Stone
5  *
6  * ColorMatrix 1.x is Copyright (C) Wilbert Dijkhof
7  *
8  * This program is free software; you can redistribute it and/or modify it
9  * under the terms of the GNU General Public License as published by the
10  * Free Software Foundation; either version 2 of the License, or (at your
11  * option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful, but
14  * OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
16  * License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software Foundation,
20  * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21  */
22 
23 /**
24  * @file
25  * ColorMatrix 2.0 is based on the original ColorMatrix filter by Wilbert
26  * Dijkhof. It adds the ability to convert between any of: Rec.709, FCC,
27  * Rec.601, and SMPTE 240M. It also makes pre and post clipping optional,
28  * adds an option to use scaled or non-scaled coefficients, and more...
29  */
30 
31 #include <float.h>
32 #include "avfilter.h"
33 #include "formats.h"
34 #include "internal.h"
35 #include "video.h"
36 #include "libavutil/opt.h"
37 #include "libavutil/pixdesc.h"
38 #include "libavutil/avstring.h"
39 
40 #define NS(n) n < 0 ? (int)(n*65536.0-0.5+DBL_EPSILON) : (int)(n*65536.0+0.5)
41 #define CB(n) av_clip_uint8(n)
42 
43 static const double yuv_coeff[4][3][3] = {
44  { { +0.7152, +0.0722, +0.2126 }, // Rec.709 (0)
45  { -0.3850, +0.5000, -0.1150 },
46  { -0.4540, -0.0460, +0.5000 } },
47  { { +0.5900, +0.1100, +0.3000 }, // FCC (1)
48  { -0.3310, +0.5000, -0.1690 },
49  { -0.4210, -0.0790, +0.5000 } },
50  { { +0.5870, +0.1140, +0.2990 }, // Rec.601 (ITU-R BT.470-2/SMPTE 170M) (2)
51  { -0.3313, +0.5000, -0.1687 },
52  { -0.4187, -0.0813, +0.5000 } },
53  { { +0.7010, +0.0870, +0.2120 }, // SMPTE 240M (3)
54  { -0.3840, +0.5000, -0.1160 },
55  { -0.4450, -0.0550, +0.5000 } },
56 };
57 
58 enum ColorMode {
59  COLOR_MODE_NONE = -1,
60  COLOR_MODE_BT709,
61  COLOR_MODE_FCC,
62  COLOR_MODE_BT601,
63  COLOR_MODE_SMPTE240M,
64  COLOR_MODE_COUNT
65 };
66 
67 typedef struct {
68  const AVClass *class;
69  int yuv_convert[16][3][3];
70  int interlaced;
71  enum ColorMode source, dest;
72  int mode;
73  int hsub, vsub;
74 } ColorMatrixContext;
75 
76 #define OFFSET(x) offsetof(ColorMatrixContext, x)
77 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
78 
79 static const AVOption colormatrix_options[] = {
80  { "src", "set source color matrix", OFFSET(source), AV_OPT_TYPE_INT, {.i64=COLOR_MODE_NONE}, COLOR_MODE_NONE, COLOR_MODE_COUNT-1, .flags=FLAGS, .unit="color_mode" },
81  { "dst", "set destination color matrix", OFFSET(dest), AV_OPT_TYPE_INT, {.i64=COLOR_MODE_NONE}, COLOR_MODE_NONE, COLOR_MODE_COUNT-1, .flags=FLAGS, .unit="color_mode" },
82  { "bt709", "set BT.709 colorspace", 0, AV_OPT_TYPE_CONST, {.i64=COLOR_MODE_BT709}, .flags=FLAGS, .unit="color_mode" },
83  { "fcc", "set FCC colorspace ", 0, AV_OPT_TYPE_CONST, {.i64=COLOR_MODE_FCC}, .flags=FLAGS, .unit="color_mode" },
84  { "bt601", "set BT.601 colorspace", 0, AV_OPT_TYPE_CONST, {.i64=COLOR_MODE_BT601}, .flags=FLAGS, .unit="color_mode" },
85  { "smpte240m", "set SMPTE-240M colorspace", 0, AV_OPT_TYPE_CONST, {.i64=COLOR_MODE_SMPTE240M}, .flags=FLAGS, .unit="color_mode" },
86  { NULL }
87 };
88 
89 AVFILTER_DEFINE_CLASS(colormatrix);
90 
91 #define ma m[0][0]
92 #define mb m[0][1]
93 #define mc m[0][2]
94 #define md m[1][0]
95 #define me m[1][1]
96 #define mf m[1][2]
97 #define mg m[2][0]
98 #define mh m[2][1]
99 #define mi m[2][2]
100 
101 #define ima im[0][0]
102 #define imb im[0][1]
103 #define imc im[0][2]
104 #define imd im[1][0]
105 #define ime im[1][1]
106 #define imf im[1][2]
107 #define img im[2][0]
108 #define imh im[2][1]
109 #define imi im[2][2]
110 
111 static void inverse3x3(double im[3][3], const double m[3][3])
112 {
113  double det = ma * (me * mi - mf * mh) - mb * (md * mi - mf * mg) + mc * (md * mh - me * mg);
114  det = 1.0 / det;
115  ima = det * (me * mi - mf * mh);
116  imb = det * (mc * mh - mb * mi);
117  imc = det * (mb * mf - mc * me);
118  imd = det * (mf * mg - md * mi);
119  ime = det * (ma * mi - mc * mg);
120  imf = det * (mc * md - ma * mf);
121  img = det * (md * mh - me * mg);
122  imh = det * (mb * mg - ma * mh);
123  imi = det * (ma * me - mb * md);
124 }
125 
126 static void solve_coefficients(double cm[3][3], double rgb[3][3], const double yuv[3][3])
127 {
128  int i, j;
129  for (i = 0; i < 3; i++)
130  for (j = 0; j < 3; j++)
131  cm[i][j] = yuv[i][0] * rgb[0][j] + yuv[i][1] * rgb[1][j] + yuv[i][2] * rgb[2][j];
132 }
133 
134 static void calc_coefficients(AVFilterContext *ctx)
135 {
136  ColorMatrixContext *color = ctx->priv;
137  double rgb_coeffd[4][3][3];
138  double yuv_convertd[16][3][3];
139  int v = 0;
140  int i, j, k;
141 
142  for (i = 0; i < 4; i++)
143  inverse3x3(rgb_coeffd[i], yuv_coeff[i]);
144  for (i = 0; i < 4; i++) {
145  for (j = 0; j < 4; j++) {
146  solve_coefficients(yuv_convertd[v], rgb_coeffd[i], yuv_coeff[j]);
147  for (k = 0; k < 3; k++) {
148  color->yuv_convert[v][k][0] = NS(yuv_convertd[v][k][0]);
149  color->yuv_convert[v][k][1] = NS(yuv_convertd[v][k][1]);
150  color->yuv_convert[v][k][2] = NS(yuv_convertd[v][k][2]);
151  }
152  if (color->yuv_convert[v][0][0] != 65536 || color->yuv_convert[v][1][0] != 0 ||
153  color->yuv_convert[v][2][0] != 0) {
154  av_log(ctx, AV_LOG_ERROR, "error calculating conversion coefficients\n");
155  }
156  v++;
157  }
158  }
159 }
160 
161 static const char *color_modes[] = {"bt709", "fcc", "bt601", "smpte240m"};
162 
163 static av_cold int init(AVFilterContext *ctx)
164 {
165  ColorMatrixContext *color = ctx->priv;
166 
167  if (color->source == COLOR_MODE_NONE || color->dest == COLOR_MODE_NONE) {
168  av_log(ctx, AV_LOG_ERROR, "Unspecified source or destination color space\n");
169  return AVERROR(EINVAL);
170  }
171 
172  if (color->source == color->dest) {
173  av_log(ctx, AV_LOG_ERROR, "Source and destination color space must not be identical\n");
174  return AVERROR(EINVAL);
175  }
176 
177  color->mode = color->source * 4 + color->dest;
178 
179  calc_coefficients(ctx);
180 
181  return 0;
182 }
183 
184 static void process_frame_uyvy422(ColorMatrixContext *color,
185  AVFrame *dst, AVFrame *src)
186 {
187  const unsigned char *srcp = src->data[0];
188  const int src_pitch = src->linesize[0];
189  const int height = src->height;
190  const int width = src->width*2;
191  unsigned char *dstp = dst->data[0];
192  const int dst_pitch = dst->linesize[0];
193  const int c2 = color->yuv_convert[color->mode][0][1];
194  const int c3 = color->yuv_convert[color->mode][0][2];
195  const int c4 = color->yuv_convert[color->mode][1][1];
196  const int c5 = color->yuv_convert[color->mode][1][2];
197  const int c6 = color->yuv_convert[color->mode][2][1];
198  const int c7 = color->yuv_convert[color->mode][2][2];
199  int x, y;
200 
201  for (y = 0; y < height; y++) {
202  for (x = 0; x < width; x += 4) {
203  const int u = srcp[x + 0] - 128;
204  const int v = srcp[x + 2] - 128;
205  const int uvval = c2 * u + c3 * v + 1081344;
206  dstp[x + 0] = CB((c4 * u + c5 * v + 8421376) >> 16);
207  dstp[x + 1] = CB((65536 * (srcp[x + 1] - 16) + uvval) >> 16);
208  dstp[x + 2] = CB((c6 * u + c7 * v + 8421376) >> 16);
209  dstp[x + 3] = CB((65536 * (srcp[x + 3] - 16) + uvval) >> 16);
210  }
211  srcp += src_pitch;
212  dstp += dst_pitch;
213  }
214 }
215 
216 static void process_frame_yuv422p(ColorMatrixContext *color,
217  AVFrame *dst, AVFrame *src)
218 {
219  const unsigned char *srcpU = src->data[1];
220  const unsigned char *srcpV = src->data[2];
221  const unsigned char *srcpY = src->data[0];
222  const int src_pitchY = src->linesize[0];
223  const int src_pitchUV = src->linesize[1];
224  const int height = src->height;
225  const int width = src->width;
226  unsigned char *dstpU = dst->data[1];
227  unsigned char *dstpV = dst->data[2];
228  unsigned char *dstpY = dst->data[0];
229  const int dst_pitchY = dst->linesize[0];
230  const int dst_pitchUV = dst->linesize[1];
231  const int c2 = color->yuv_convert[color->mode][0][1];
232  const int c3 = color->yuv_convert[color->mode][0][2];
233  const int c4 = color->yuv_convert[color->mode][1][1];
234  const int c5 = color->yuv_convert[color->mode][1][2];
235  const int c6 = color->yuv_convert[color->mode][2][1];
236  const int c7 = color->yuv_convert[color->mode][2][2];
237  int x, y;
238 
239  for (y = 0; y < height; y++) {
240  for (x = 0; x < width; x += 2) {
241  const int u = srcpU[x >> 1] - 128;
242  const int v = srcpV[x >> 1] - 128;
243  const int uvval = c2 * u + c3 * v + 1081344;
244  dstpY[x + 0] = CB((65536 * (srcpY[x + 0] - 16) + uvval) >> 16);
245  dstpY[x + 1] = CB((65536 * (srcpY[x + 1] - 16) + uvval) >> 16);
246  dstpU[x >> 1] = CB((c4 * u + c5 * v + 8421376) >> 16);
247  dstpV[x >> 1] = CB((c6 * u + c7 * v + 8421376) >> 16);
248  }
249  srcpY += src_pitchY;
250  dstpY += dst_pitchY;
251  srcpU += src_pitchUV;
252  srcpV += src_pitchUV;
253  dstpU += dst_pitchUV;
254  dstpV += dst_pitchUV;
255  }
256 }
257 
258 static void process_frame_yuv420p(ColorMatrixContext *color,
259  AVFrame *dst, AVFrame *src)
260 {
261  const unsigned char *srcpU = src->data[1];
262  const unsigned char *srcpV = src->data[2];
263  const unsigned char *srcpY = src->data[0];
264  const unsigned char *srcpN = src->data[0] + src->linesize[0];
265  const int src_pitchY = src->linesize[0];
266  const int src_pitchUV = src->linesize[1];
267  const int height = src->height;
268  const int width = src->width;
269  unsigned char *dstpU = dst->data[1];
270  unsigned char *dstpV = dst->data[2];
271  unsigned char *dstpY = dst->data[0];
272  unsigned char *dstpN = dst->data[0] + dst->linesize[0];
273  const int dst_pitchY = dst->linesize[0];
274  const int dst_pitchUV = dst->linesize[1];
275  const int c2 = color->yuv_convert[color->mode][0][1];
276  const int c3 = color->yuv_convert[color->mode][0][2];
277  const int c4 = color->yuv_convert[color->mode][1][1];
278  const int c5 = color->yuv_convert[color->mode][1][2];
279  const int c6 = color->yuv_convert[color->mode][2][1];
280  const int c7 = color->yuv_convert[color->mode][2][2];
281  int x, y;
282 
283  for (y = 0; y < height; y += 2) {
284  for (x = 0; x < width; x += 2) {
285  const int u = srcpU[x >> 1] - 128;
286  const int v = srcpV[x >> 1] - 128;
287  const int uvval = c2 * u + c3 * v + 1081344;
288  dstpY[x + 0] = CB((65536 * (srcpY[x + 0] - 16) + uvval) >> 16);
289  dstpY[x + 1] = CB((65536 * (srcpY[x + 1] - 16) + uvval) >> 16);
290  dstpN[x + 0] = CB((65536 * (srcpN[x + 0] - 16) + uvval) >> 16);
291  dstpN[x + 1] = CB((65536 * (srcpN[x + 1] - 16) + uvval) >> 16);
292  dstpU[x >> 1] = CB((c4 * u + c5 * v + 8421376) >> 16);
293  dstpV[x >> 1] = CB((c6 * u + c7 * v + 8421376) >> 16);
294  }
295  srcpY += src_pitchY << 1;
296  dstpY += dst_pitchY << 1;
297  srcpN += src_pitchY << 1;
298  dstpN += dst_pitchY << 1;
299  srcpU += src_pitchUV;
300  srcpV += src_pitchUV;
301  dstpU += dst_pitchUV;
302  dstpV += dst_pitchUV;
303  }
304 }
305 
306 static int config_input(AVFilterLink *inlink)
307 {
308  AVFilterContext *ctx = inlink->dst;
309  ColorMatrixContext *color = ctx->priv;
310  const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(inlink->format);
311 
312  color->hsub = pix_desc->log2_chroma_w;
313  color->vsub = pix_desc->log2_chroma_h;
314 
315  av_log(ctx, AV_LOG_VERBOSE, "%s -> %s\n",
316  color_modes[color->source], color_modes[color->dest]);
317 
318  return 0;
319 }
320 
321 static int query_formats(AVFilterContext *ctx)
322 {
323  static const enum AVPixelFormat pix_fmts[] = {
324  AV_PIX_FMT_YUV422P,
325  AV_PIX_FMT_YUV420P,
326  AV_PIX_FMT_UYVY422,
327  AV_PIX_FMT_NONE
328  };
329 
330  ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
331 
332  return 0;
333 }
334 
335 static int filter_frame(AVFilterLink *link, AVFrame *in)
336 {
337  AVFilterContext *ctx = link->dst;
338  ColorMatrixContext *color = ctx->priv;
339  AVFilterLink *outlink = ctx->outputs[0];
340  AVFrame *out;
341 
342  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
343  if (!out) {
344  av_frame_free(&in);
345  return AVERROR(ENOMEM);
346  }
347  av_frame_copy_props(out, in);
348 
349  if (in->format == AV_PIX_FMT_YUV422P)
350  process_frame_yuv422p(color, out, in);
351  else if (in->format == AV_PIX_FMT_YUV420P)
352  process_frame_yuv420p(color, out, in);
353  else
354  process_frame_uyvy422(color, out, in);
355 
356  av_frame_free(&in);
357  return ff_filter_frame(outlink, out);
358 }
359 
360 static const AVFilterPad colormatrix_inputs[] = {
361  {
362  .name = "default",
363  .type = AVMEDIA_TYPE_VIDEO,
364  .config_props = config_input,
365  .filter_frame = filter_frame,
366  },
367  { NULL }
368 };
369 
370 static const AVFilterPad colormatrix_outputs[] = {
371  {
372  .name = "default",
373  .type = AVMEDIA_TYPE_VIDEO,
374  },
375  { NULL }
376 };
377 
378 AVFilter avfilter_vf_colormatrix = {
379  .name = "colormatrix",
380  .description = NULL_IF_CONFIG_SMALL("Convert color matrix."),
381 
382  .priv_size = sizeof(ColorMatrixContext),
383  .init = init,
384  .query_formats = query_formats,
385  .inputs = colormatrix_inputs,
386  .outputs = colormatrix_outputs,
387  .priv_class = &colormatrix_class,
388 };
AV_PIX_FMT_UYVY422
packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1
Definition: pixfmt.h:85
avfilter_vf_colormatrix
AVFilter avfilter_vf_colormatrix
Definition: vf_colormatrix.c:378
v
float v
Definition: avf_showspectrum.c:88
init
static av_cold int init(AVFilterContext *ctx)
Definition: vf_colormatrix.c:163
av_frame_copy_props
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:424
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:1778
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:76
mi
#define mi
Definition: vf_colormatrix.c:99
mf
#define mf
Definition: vf_colormatrix.c:96
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#define c2
Definition: idct_sh4.c:27
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BYTE int const BYTE int src_pitch
Definition: avisynth_c.h:713
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Definition: opt.h:251
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static int filter_frame(AVFilterLink *link, AVFrame *in)
Definition: vf_colormatrix.c:335
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static const double yuv_coeff[4][3][3]
Definition: vf_colormatrix.c:43
solve_coefficients
static void solve_coefficients(double cm[3][3], double rgb[3][3], const double yuv[3][3])
Definition: vf_colormatrix.c:126
ma
#define ma
Definition: vf_colormatrix.c:91
ColorMatrixContext::yuv_convert
int yuv_convert[16][3][3]
Definition: vf_colormatrix.c:69
outputs
static const AVFilterPad outputs[]
Definition: af_ashowinfo.c:117
avfilter.h
external API header
AV_OPT_TYPE_INT
Definition: opt.h:222
ima
#define ima
Definition: vf_colormatrix.c:101
me
#define me
Definition: vf_colormatrix.c:95
in
About Git write you should know how to use GIT properly Luckily Git comes with excellent documentation git help man git shows you the available git< command > help man git< command > shows information about the subcommand< command > The most comprehensive manual is the website Git Reference visit they are quite exhaustive You do not need a special username or password All you need is to provide a ssh public key to the Git server admin What follows now is a basic introduction to Git and some FFmpeg specific guidelines Read it at least if you are granted commit privileges to the FFmpeg project you are expected to be familiar with these rules I if not You can get git from etc no matter how small Every one of them has been saved from looking like a fool by this many times It s very easy for stray debug output or cosmetic modifications to slip in
Definition: git-howto.txt:5
ff_get_video_buffer
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:143
AVPixFmtDescriptor::log2_chroma_w
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:66
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: vf_colormatrix.c:321
ff_make_format_list
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:308
img
#define img
Definition: vf_colormatrix.c:107
srcp
BYTE int const BYTE * srcp
Definition: avisynth_c.h:713
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const char * name
Pad name.
Definition: libavfilter/internal.h:63
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Definition: opt.h:229
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Definition: vf_colormatrix.c:63
ff_filter_frame
it can be given away to ff_start_frame *A reference passed to ff_filter_frame(or the deprecated ff_start_frame) is given away and must no longer be used.*A reference created with avfilter_ref_buffer belongs to the code that created it.*A reference obtained with ff_get_video_buffer or ff_get_audio_buffer belongs to the code that requested it.*A reference given as return value by the get_video_buffer or get_audio_buffer method is given away and must no longer be used.Link reference fields---------------------The AVFilterLink structure has a few AVFilterBufferRef fields.The cur_buf and out_buf were used with the deprecated start_frame/draw_slice/end_frame API and should no longer be used.src_buf
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Definition: attributes.h:78
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Definition: vf_colormatrix.c:61
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Definition: vf_colormatrix.c:92
c6
#define c6
Definition: idct_sh4.c:31
opt.h
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m
window constants for m
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#define NS(n)
Definition: vf_colormatrix.c:40
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static const AVFilterPad colormatrix_inputs[]
Definition: vf_colormatrix.c:360
imi
#define imi
Definition: vf_colormatrix.c:109
imd
#define imd
Definition: vf_colormatrix.c:104
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static int config_input(AVFilterLink *inlink)
Definition: vf_colormatrix.c:306
ff_set_common_formats
void 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:545
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static const char * color_modes[]
Definition: vf_colormatrix.c:161
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#define cm
Definition: dvbsubdec.c:34
FLAGS
#define FLAGS
Definition: vf_colormatrix.c:77
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A filter pad used for either input or output.
Definition: libavfilter/internal.h:57
x
Discrete Time axis x
Definition: FFT of a Simple Sinusoid.m:10
process_frame_yuv422p
static void process_frame_yuv422p(ColorMatrixContext *color, AVFrame *dst, AVFrame *src)
Definition: vf_colormatrix.c:216
AVFrame::width
int width
width and height of the video frame
Definition: frame.h:122
AVPixFmtDescriptor::log2_chroma_h
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:75
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Definition: avisynth_c.h:713
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#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: libavutil/internal.h:123
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void * priv
private data for use by the filter
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void av_log(void *avcl, int level, const char *fmt,...)
Definition: log.c:246
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(colormatrix)
c5
#define c5
Definition: idct_sh4.c:30
COLOR_MODE_BT709
Definition: vf_colormatrix.c:60
link
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFilterBuffer 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
Definition: filter_design.txt:23
AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:72
inverse3x3
static void inverse3x3(double im[3][3], const double m[3][3])
Definition: vf_colormatrix.c:111
AV_LOG_VERBOSE
#define AV_LOG_VERBOSE
Definition: log.h:157
imh
#define imh
Definition: vf_colormatrix.c:108
md
#define md
Definition: vf_colormatrix.c:94
ColorMode
ColorMode
Definition: avf_showspectrum.c:39
ime
#define ime
Definition: vf_colormatrix.c:105
CB
#define CB(n)
Definition: vf_colormatrix.c:41
u
float u
Definition: avf_showspectrum.c:88
ColorMatrixContext::dest
enum ColorMode source dest
Definition: vf_colormatrix.c:71
COLOR_MODE_COUNT
Definition: vf_colormatrix.c:64
COLOR_MODE_NONE
Definition: vf_colormatrix.c:59
calc_coefficients
static void calc_coefficients(AVFilterContext *ctx)
Definition: vf_colormatrix.c:134
mc
#define mc
Definition: vf_colormatrix.c:93
AVFrame::format
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames...
Definition: frame.h:134
k
for k
Definition: genspecsines_sin.m:6
process_frame_yuv420p
static void process_frame_yuv420p(ColorMatrixContext *color, AVFrame *dst, AVFrame *src)
Definition: vf_colormatrix.c:258
NULL
NULL
Definition: eval.c:55
width
static int width
Definition: tests/utils.c:158
start.dest
dest
Definition: start.py:60
src
AVS_Value src
Definition: avisynth_c.h:523
im
float im
Definition: fft-test.c:64
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:101
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:55
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:148
height
BYTE int const BYTE int int int height
Definition: avisynth_c.h:713
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:50
AVFilter
Filter definition.
Definition: avfilter.h:436
i
synthesis window for stochastic i
Definition: code Kat/hpsmodel.m:34
AVFilter::name
const char * name
filter name
Definition: avfilter.h:437
imc
#define imc
Definition: vf_colormatrix.c:103
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFilterBuffer 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.Buffer references ownership and permissions
AVFilterContext::outputs
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:539
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:87
AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:68
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:108
y
function y
Definition: D.m:1
c4
#define c4
Definition: idct_sh4.c:29
imb
#define imb
Definition: vf_colormatrix.c:102
mg
#define mg
Definition: vf_colormatrix.c:97
dst
else dst[i][x+y *dst_stride[i]]
Definition: vf_mcdeint.c:160
AVFilterContext
An instance of a filter.
Definition: avfilter.h:524
AVFrame::height
int height
Definition: frame.h:122
colormatrix_outputs
static const AVFilterPad colormatrix_outputs[]
Definition: vf_colormatrix.c:370
AVMEDIA_TYPE_VIDEO
Definition: avutil.h:143
out
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=av_sample_fmt_is_planar(in_fmt);out_planar=av_sample_fmt_is_planar(out_fmt);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_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_dlog(ac->avr,"%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-> out
Definition: audio_convert.c:194
dst_pitch
BYTE int dst_pitch
Definition: avisynth_c.h:713
internal.h
internal API functions
COLOR_MODE_BT601
Definition: vf_colormatrix.c:62
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:66
c3
#define c3
Definition: idct_sh4.c:28
inputs
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
Definition: filter_design.txt:216
colormatrix_options
static const AVOption colormatrix_options[]
Definition: vf_colormatrix.c:79
process_frame_uyvy422
static void process_frame_uyvy422(ColorMatrixContext *color, AVFrame *dst, AVFrame *src)
Definition: vf_colormatrix.c:184
imf
#define imf
Definition: vf_colormatrix.c:106
c7
#define c7
Definition: idct_sh4.c:32
mh
#define mh
Definition: vf_colormatrix.c:98
OFFSET
#define OFFSET(x)
Definition: vf_colormatrix.c:76
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