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vf_colorchannelmixer.c
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1 /*
2  * Copyright (c) 2013 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/opt.h"
22 #include "avfilter.h"
23 #include "drawutils.h"
24 #include "formats.h"
25 #include "internal.h"
26 #include "video.h"
27 
28 #define R 0
29 #define G 1
30 #define B 2
31 #define A 3
32 
33 typedef struct {
34  const AVClass *class;
35  double rr, rg, rb, ra;
36  double gr, gg, gb, ga;
37  double br, bg, bb, ba;
38  double ar, ag, ab, aa;
39 
40  int *lut[4][4];
41 
42  int *buffer;
43 
44  uint8_t rgba_map[4];
46 
47 #define OFFSET(x) offsetof(ColorChannelMixerContext, x)
48 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
50  { "rr", "set the red gain for the red channel", OFFSET(rr), AV_OPT_TYPE_DOUBLE, {.dbl=1}, -2, 2, FLAGS },
51  { "rg", "set the green gain for the red channel", OFFSET(rg), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
52  { "rb", "set the blue gain for the red channel", OFFSET(rb), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
53  { "ra", "set the alpha gain for the red channel", OFFSET(ra), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
54  { "gr", "set the red gain for the green channel", OFFSET(gr), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
55  { "gg", "set the green gain for the green channel", OFFSET(gg), AV_OPT_TYPE_DOUBLE, {.dbl=1}, -2, 2, FLAGS },
56  { "gb", "set the blue gain for the green channel", OFFSET(gb), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
57  { "ga", "set the alpha gain for the green channel", OFFSET(ga), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
58  { "br", "set the red gain for the blue channel", OFFSET(br), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
59  { "bg", "set the green gain for the blue channel", OFFSET(bg), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
60  { "bb", "set the blue gain for the blue channel", OFFSET(bb), AV_OPT_TYPE_DOUBLE, {.dbl=1}, -2, 2, FLAGS },
61  { "ba", "set the alpha gain for the blue channel", OFFSET(ba), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
62  { "ar", "set the red gain for the alpha channel", OFFSET(ar), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
63  { "ag", "set the green gain for the alpha channel", OFFSET(ag), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
64  { "ab", "set the blue gain for the alpha channel", OFFSET(ab), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
65  { "aa", "set the alpha gain for the alpha channel", OFFSET(aa), AV_OPT_TYPE_DOUBLE, {.dbl=1}, -2, 2, FLAGS },
66  { NULL }
67 };
68 
69 AVFILTER_DEFINE_CLASS(colorchannelmixer);
70 
72 {
73  static const enum AVPixelFormat pix_fmts[] = {
82  };
83 
85  return 0;
86 }
87 
88 static int config_output(AVFilterLink *outlink)
89 {
90  AVFilterContext *ctx = outlink->src;
92  int i, j, size, *buffer;
93 
94  ff_fill_rgba_map(s->rgba_map, outlink->format);
95 
96  switch (outlink->format) {
97  case AV_PIX_FMT_RGB48:
98  case AV_PIX_FMT_BGR48:
99  case AV_PIX_FMT_RGBA64:
100  case AV_PIX_FMT_BGRA64:
101  size = 65536;
102  break;
103  default:
104  size = 256;
105  }
106 
107  s->buffer = buffer = av_malloc(16 * size * sizeof(*s->buffer));
108  if (!s->buffer)
109  return AVERROR(ENOMEM);
110 
111  for (i = 0; i < 4; i++)
112  for (j = 0; j < 4; j++, buffer += size)
113  s->lut[i][j] = buffer;
114 
115  for (i = 0; i < size; i++) {
116  s->lut[R][R][i] = round(i * s->rr);
117  s->lut[R][G][i] = round(i * s->rg);
118  s->lut[R][B][i] = round(i * s->rb);
119  s->lut[R][A][i] = round(i * s->ra);
120 
121  s->lut[G][R][i] = round(i * s->gr);
122  s->lut[G][G][i] = round(i * s->gg);
123  s->lut[G][B][i] = round(i * s->gb);
124  s->lut[G][A][i] = round(i * s->ga);
125 
126  s->lut[B][R][i] = round(i * s->br);
127  s->lut[B][G][i] = round(i * s->bg);
128  s->lut[B][B][i] = round(i * s->bb);
129  s->lut[B][A][i] = round(i * s->ba);
130 
131  s->lut[A][R][i] = round(i * s->ar);
132  s->lut[A][G][i] = round(i * s->ag);
133  s->lut[A][B][i] = round(i * s->ab);
134  s->lut[A][A][i] = round(i * s->aa);
135  }
136 
137  return 0;
138 }
139 
140 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
141 {
142  AVFilterContext *ctx = inlink->dst;
144  AVFilterLink *outlink = ctx->outputs[0];
145  const uint8_t roffset = s->rgba_map[R];
146  const uint8_t goffset = s->rgba_map[G];
147  const uint8_t boffset = s->rgba_map[B];
148  const uint8_t aoffset = s->rgba_map[A];
149  const uint8_t *srcrow = in->data[0];
150  uint8_t *dstrow;
151  AVFrame *out;
152  int i, j;
153 
154  if (av_frame_is_writable(in)) {
155  out = in;
156  } else {
157  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
158  if (!out) {
159  av_frame_free(&in);
160  return AVERROR(ENOMEM);
161  }
162  av_frame_copy_props(out, in);
163  }
164 
165  dstrow = out->data[0];
166  switch (outlink->format) {
167  case AV_PIX_FMT_BGR24:
168  case AV_PIX_FMT_RGB24:
169  for (i = 0; i < outlink->h; i++) {
170  const uint8_t *src = srcrow;
171  uint8_t *dst = dstrow;
172 
173  for (j = 0; j < outlink->w * 3; j += 3) {
174  const uint8_t rin = src[j + roffset];
175  const uint8_t gin = src[j + goffset];
176  const uint8_t bin = src[j + boffset];
177 
178  dst[j + roffset] = av_clip_uint8(s->lut[R][R][rin] +
179  s->lut[R][G][gin] +
180  s->lut[R][B][bin]);
181  dst[j + goffset] = av_clip_uint8(s->lut[G][R][rin] +
182  s->lut[G][G][gin] +
183  s->lut[G][B][bin]);
184  dst[j + boffset] = av_clip_uint8(s->lut[B][R][rin] +
185  s->lut[B][G][gin] +
186  s->lut[B][B][bin]);
187  }
188 
189  srcrow += in->linesize[0];
190  dstrow += out->linesize[0];
191  }
192  break;
193  case AV_PIX_FMT_0BGR:
194  case AV_PIX_FMT_0RGB:
195  case AV_PIX_FMT_BGR0:
196  case AV_PIX_FMT_RGB0:
197  for (i = 0; i < outlink->h; i++) {
198  const uint8_t *src = srcrow;
199  uint8_t *dst = dstrow;
200 
201  for (j = 0; j < outlink->w * 4; j += 4) {
202  const uint8_t rin = src[j + roffset];
203  const uint8_t gin = src[j + goffset];
204  const uint8_t bin = src[j + boffset];
205 
206  dst[j + roffset] = av_clip_uint8(s->lut[R][R][rin] +
207  s->lut[R][G][gin] +
208  s->lut[R][B][bin]);
209  dst[j + goffset] = av_clip_uint8(s->lut[G][R][rin] +
210  s->lut[G][G][gin] +
211  s->lut[G][B][bin]);
212  dst[j + boffset] = av_clip_uint8(s->lut[B][R][rin] +
213  s->lut[B][G][gin] +
214  s->lut[B][B][bin]);
215  if (in != out)
216  dst[j + aoffset] = 0;
217  }
218 
219  srcrow += in->linesize[0];
220  dstrow += out->linesize[0];
221  }
222  break;
223  case AV_PIX_FMT_ABGR:
224  case AV_PIX_FMT_ARGB:
225  case AV_PIX_FMT_BGRA:
226  case AV_PIX_FMT_RGBA:
227  for (i = 0; i < outlink->h; i++) {
228  const uint8_t *src = srcrow;
229  uint8_t *dst = dstrow;
230 
231  for (j = 0; j < outlink->w * 4; j += 4) {
232  const uint8_t rin = src[j + roffset];
233  const uint8_t gin = src[j + goffset];
234  const uint8_t bin = src[j + boffset];
235  const uint8_t ain = src[j + aoffset];
236 
237  dst[j + roffset] = av_clip_uint8(s->lut[R][R][rin] +
238  s->lut[R][G][gin] +
239  s->lut[R][B][bin] +
240  s->lut[R][A][ain]);
241  dst[j + goffset] = av_clip_uint8(s->lut[G][R][rin] +
242  s->lut[G][G][gin] +
243  s->lut[G][B][bin] +
244  s->lut[G][A][ain]);
245  dst[j + boffset] = av_clip_uint8(s->lut[B][R][rin] +
246  s->lut[B][G][gin] +
247  s->lut[B][B][bin] +
248  s->lut[B][A][ain]);
249  dst[j + aoffset] = av_clip_uint8(s->lut[A][R][rin] +
250  s->lut[A][G][gin] +
251  s->lut[A][B][bin] +
252  s->lut[A][A][ain]);
253  }
254 
255  srcrow += in->linesize[0];
256  dstrow += out->linesize[0];
257  }
258  break;
259  case AV_PIX_FMT_BGR48:
260  case AV_PIX_FMT_RGB48:
261  for (i = 0; i < outlink->h; i++) {
262  const uint16_t *src = (const uint16_t *)srcrow;
263  uint16_t *dst = (uint16_t *)dstrow;
264 
265  for (j = 0; j < outlink->w * 3; j += 3) {
266  const uint16_t rin = src[j + roffset];
267  const uint16_t gin = src[j + goffset];
268  const uint16_t bin = src[j + boffset];
269 
270  dst[j + roffset] = av_clip_uint16(s->lut[R][R][rin] +
271  s->lut[R][G][gin] +
272  s->lut[R][B][bin]);
273  dst[j + goffset] = av_clip_uint16(s->lut[G][R][rin] +
274  s->lut[G][G][gin] +
275  s->lut[G][B][bin]);
276  dst[j + boffset] = av_clip_uint16(s->lut[B][R][rin] +
277  s->lut[B][G][gin] +
278  s->lut[B][B][bin]);
279  }
280 
281  srcrow += in->linesize[0];
282  dstrow += out->linesize[0];
283  }
284  break;
285  case AV_PIX_FMT_BGRA64:
286  case AV_PIX_FMT_RGBA64:
287  for (i = 0; i < outlink->h; i++) {
288  const uint16_t *src = (const uint16_t *)srcrow;
289  uint16_t *dst = (uint16_t *)dstrow;
290 
291  for (j = 0; j < outlink->w * 4; j += 4) {
292  const uint16_t rin = src[j + roffset];
293  const uint16_t gin = src[j + goffset];
294  const uint16_t bin = src[j + boffset];
295  const uint16_t ain = src[j + aoffset];
296 
297  dst[j + roffset] = av_clip_uint16(s->lut[R][R][rin] +
298  s->lut[R][G][gin] +
299  s->lut[R][B][bin] +
300  s->lut[R][A][ain]);
301  dst[j + goffset] = av_clip_uint16(s->lut[G][R][rin] +
302  s->lut[G][G][gin] +
303  s->lut[G][B][bin] +
304  s->lut[G][A][ain]);
305  dst[j + boffset] = av_clip_uint16(s->lut[B][R][rin] +
306  s->lut[B][G][gin] +
307  s->lut[B][B][bin] +
308  s->lut[B][A][ain]);
309  dst[j + aoffset] = av_clip_uint16(s->lut[A][R][rin] +
310  s->lut[A][G][gin] +
311  s->lut[A][B][bin] +
312  s->lut[A][A][ain]);
313  }
314 
315  srcrow += in->linesize[0];
316  dstrow += out->linesize[0];
317  }
318  }
319 
320  if (in != out)
321  av_frame_free(&in);
322  return ff_filter_frame(ctx->outputs[0], out);
323 }
324 
325 static av_cold void uninit(AVFilterContext *ctx)
326 {
328 
329  av_freep(&s->buffer);
330 }
331 
333  {
334  .name = "default",
335  .type = AVMEDIA_TYPE_VIDEO,
336  .filter_frame = filter_frame,
337  },
338  { NULL }
339 };
340 
342  {
343  .name = "default",
344  .type = AVMEDIA_TYPE_VIDEO,
345  .config_props = config_output,
346  },
347  { NULL }
348 };
349 
351  .name = "colorchannelmixer",
352  .description = NULL_IF_CONFIG_SMALL("Adjust colors by mixing color channels."),
353  .priv_size = sizeof(ColorChannelMixerContext),
354  .priv_class = &colorchannelmixer_class,
355  .uninit = uninit,
357  .inputs = colorchannelmixer_inputs,
358  .outputs = colorchannelmixer_outputs,
360 };
#define NULL
Definition: coverity.c:32
const char * s
Definition: avisynth_c.h:669
AVFILTER_DEFINE_CLASS(colorchannelmixer)
This structure describes decoded (raw) audio or video data.
Definition: frame.h:163
static int query_formats(AVFilterContext *ctx)
AVOption.
Definition: opt.h:255
static const AVFilterPad outputs[]
Definition: af_ashowinfo.c:246
Main libavfilter public API header.
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:70
#define AV_PIX_FMT_RGBA64
Definition: pixfmt.h:348
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_dlog(ac->avr,"%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
#define AV_PIX_FMT_BGRA64
Definition: pixfmt.h:353
packed BGR 8:8:8, 32bpp, XBGRXBGR... X=unused/undefined
Definition: pixfmt.h:264
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:109
#define OFFSET(x)
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:294
#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:451
const char * name
Pad name.
Definition: internal.h:67
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1145
uint8_t
#define av_cold
Definition: attributes.h:74
#define av_malloc(s)
packed RGB 8:8:8, 32bpp, RGBXRGBX... X=unused/undefined
Definition: pixfmt.h:263
#define A
AVOptions.
static const AVFilterPad colorchannelmixer_inputs[]
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
Definition: pixfmt.h:101
#define AV_PIX_FMT_BGR48
Definition: pixfmt.h:349
ptrdiff_t size
Definition: opengl_enc.c:101
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:539
#define G
A filter pad used for either input or output.
Definition: internal.h:61
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
static const AVOption colorchannelmixer_options[]
#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:148
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:180
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
Definition: pixfmt.h:102
void * priv
private data for use by the filter
Definition: avfilter.h:654
#define AV_PIX_FMT_RGB48
Definition: pixfmt.h:344
static av_always_inline av_const double round(double x)
Definition: libm.h:162
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
Definition: pixfmt.h:99
static av_cold void uninit(AVFilterContext *ctx)
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:100
#define B
static const AVFilterPad colorchannelmixer_outputs[]
static int config_output(AVFilterLink *outlink)
#define ra
Definition: regdef.h:57
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:71
int ff_fill_rgba_map(uint8_t *rgba_map, enum AVPixelFormat pix_fmt)
Definition: drawutils.c:33
AVS_Value src
Definition: avisynth_c.h:524
misc drawing utilities
#define FLAGS
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
Definition: frame.c:403
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:191
Describe the class of an AVClass context structure.
Definition: log.h:66
Filter definition.
Definition: avfilter.h:470
static const AVFilterPad inputs[]
Definition: af_ashowinfo.c:237
packed BGR 8:8:8, 32bpp, BGRXBGRX... X=unused/undefined
Definition: pixfmt.h:265
const char * name
Filter name.
Definition: avfilter.h:474
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:648
static int flags
Definition: cpu.c:47
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:174
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_dlog(ac->avr,"%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-> out
#define R
AVFilter ff_vf_colorchannelmixer
An instance of a filter.
Definition: avfilter.h:633
#define av_freep(p)
internal API functions
packed RGB 8:8:8, 32bpp, XRGBXRGB... X=unused/undefined
Definition: pixfmt.h:262
AVPixelFormat
Pixel format.
Definition: pixfmt.h:66
for(j=16;j >0;--j)
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:463
GLuint buffer
Definition: opengl_enc.c:102