2 Copyright (C) 2012-2015 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 /** @file src/image.cc
21 * @brief A class to describe a video image.
25 #include "exceptions.h"
29 #include "md5_digester.h"
30 #include "dcpomatic_socket.h"
32 #include <libswscale/swscale.h>
33 #include <libavutil/pixfmt.h>
34 #include <libavutil/pixdesc.h>
35 #include <libavutil/frame.h>
46 using std::runtime_error;
47 using boost::shared_ptr;
51 Image::line_factor (int n) const
57 AVPixFmtDescriptor const * d = av_pix_fmt_desc_get(_pixel_format);
59 throw PixelFormatError ("line_factor()", _pixel_format);
62 return pow (2.0f, d->log2_chroma_h);
65 /** @param n Component index.
66 * @return Number of samples (i.e. pixels, unless sub-sampled) in each direction for this component.
69 Image::sample_size (int n) const
71 int horizontal_factor = 1;
73 AVPixFmtDescriptor const * d = av_pix_fmt_desc_get (_pixel_format);
75 throw PixelFormatError ("sample_size()", _pixel_format);
77 horizontal_factor = pow (2.0f, d->log2_chroma_w);
81 lrint (ceil (static_cast<double>(size().width) / horizontal_factor)),
82 lrint (ceil (static_cast<double>(size().height) / line_factor (n)))
87 Image::components () const
89 AVPixFmtDescriptor const * d = av_pix_fmt_desc_get(_pixel_format);
91 throw PixelFormatError ("components()", _pixel_format);
94 return d->nb_components;
97 /** @return Number of planes */
99 Image::planes () const
101 AVPixFmtDescriptor const * d = av_pix_fmt_desc_get(_pixel_format);
103 throw PixelFormatError ("planes()", _pixel_format);
106 if ((d->flags & AV_PIX_FMT_FLAG_PLANAR) == 0) {
110 return d->nb_components;
113 /** Crop this image, scale it to `inter_size' and then place it in a black frame of `out_size' */
115 Image::crop_scale_window (
116 Crop crop, dcp::Size inter_size, dcp::Size out_size, dcp::YUVToRGB yuv_to_rgb, AVPixelFormat out_format, bool out_aligned
119 /* Empirical testing suggests that sws_scale() will crash if
120 the input image is not aligned.
122 DCPOMATIC_ASSERT (aligned ());
124 DCPOMATIC_ASSERT (out_size.width >= inter_size.width);
125 DCPOMATIC_ASSERT (out_size.height >= inter_size.height);
127 /* Here's an image of out_size */
128 shared_ptr<Image> out (new Image (out_format, out_size, out_aligned));
131 /* Size of the image after any crop */
132 dcp::Size const cropped_size = crop.apply (size ());
134 /* Scale context for a scale from cropped_size to inter_size */
135 struct SwsContext* scale_context = sws_getContext (
136 cropped_size.width, cropped_size.height, pixel_format(),
137 inter_size.width, inter_size.height, out_format,
141 if (!scale_context) {
142 throw runtime_error (N_("Could not allocate SwsContext"));
145 DCPOMATIC_ASSERT (yuv_to_rgb < dcp::YUV_TO_RGB_COUNT);
146 int const lut[dcp::YUV_TO_RGB_COUNT] = {
151 sws_setColorspaceDetails (
153 sws_getCoefficients (lut[yuv_to_rgb]), 0,
154 sws_getCoefficients (lut[yuv_to_rgb]), 0,
158 AVPixFmtDescriptor const * desc = av_pix_fmt_desc_get (_pixel_format);
160 throw PixelFormatError ("crop_scale_window()", _pixel_format);
163 /* Prepare input data pointers with crop */
164 uint8_t* scale_in_data[planes()];
165 for (int c = 0; c < planes(); ++c) {
166 /* To work out the crop in bytes, start by multiplying
167 the crop by the (average) bytes per pixel. Then
168 round down so that we don't crop a subsampled pixel until
169 we've cropped all of its Y-channel pixels.
171 int const x = lrintf (bytes_per_pixel(c) * crop.left) & ~ ((int) desc->log2_chroma_w);
172 scale_in_data[c] = data()[c] + x + stride()[c] * (crop.top / line_factor(c));
175 /* Corner of the image within out_size */
176 Position<int> const corner ((out_size.width - inter_size.width) / 2, (out_size.height - inter_size.height) / 2);
178 uint8_t* scale_out_data[out->planes()];
179 for (int c = 0; c < out->planes(); ++c) {
180 scale_out_data[c] = out->data()[c] + lrintf (out->bytes_per_pixel(c) * corner.x) + out->stride()[c] * corner.y;
185 scale_in_data, stride(),
186 0, cropped_size.height,
187 scale_out_data, out->stride()
190 sws_freeContext (scale_context);
196 Image::scale (dcp::Size out_size, dcp::YUVToRGB yuv_to_rgb, AVPixelFormat out_format, bool out_aligned) const
198 /* Empirical testing suggests that sws_scale() will crash if
199 the input image is not aligned.
201 DCPOMATIC_ASSERT (aligned ());
203 shared_ptr<Image> scaled (new Image (out_format, out_size, out_aligned));
205 struct SwsContext* scale_context = sws_getContext (
206 size().width, size().height, pixel_format(),
207 out_size.width, out_size.height, out_format,
211 DCPOMATIC_ASSERT (yuv_to_rgb < dcp::YUV_TO_RGB_COUNT);
212 int const lut[dcp::YUV_TO_RGB_COUNT] = {
217 sws_setColorspaceDetails (
219 sws_getCoefficients (lut[yuv_to_rgb]), 0,
220 sws_getCoefficients (lut[yuv_to_rgb]), 0,
228 scaled->data(), scaled->stride()
231 sws_freeContext (scale_context);
236 /** Blacken a YUV image whose bits per pixel is rounded up to 16 */
238 Image::yuv_16_black (uint16_t v, bool alpha)
240 memset (data()[0], 0, sample_size(0).height * stride()[0]);
241 for (int i = 1; i < 3; ++i) {
242 int16_t* p = reinterpret_cast<int16_t*> (data()[i]);
243 int const lines = sample_size(i).height;
244 for (int y = 0; y < lines; ++y) {
245 /* We divide by 2 here because we are writing 2 bytes at a time */
246 for (int x = 0; x < line_size()[i] / 2; ++x) {
249 p += stride()[i] / 2;
254 memset (data()[3], 0, sample_size(3).height * stride()[3]);
259 Image::swap_16 (uint16_t v)
261 return ((v >> 8) & 0xff) | ((v & 0xff) << 8);
267 /* U/V black value for 8-bit colour */
268 static uint8_t const eight_bit_uv = (1 << 7) - 1;
269 /* U/V black value for 9-bit colour */
270 static uint16_t const nine_bit_uv = (1 << 8) - 1;
271 /* U/V black value for 10-bit colour */
272 static uint16_t const ten_bit_uv = (1 << 9) - 1;
273 /* U/V black value for 16-bit colour */
274 static uint16_t const sixteen_bit_uv = (1 << 15) - 1;
276 switch (_pixel_format) {
277 case AV_PIX_FMT_YUV420P:
278 case AV_PIX_FMT_YUV422P:
279 case AV_PIX_FMT_YUV444P:
280 case AV_PIX_FMT_YUV411P:
281 memset (data()[0], 0, sample_size(0).height * stride()[0]);
282 memset (data()[1], eight_bit_uv, sample_size(1).height * stride()[1]);
283 memset (data()[2], eight_bit_uv, sample_size(2).height * stride()[2]);
286 case AV_PIX_FMT_YUVJ420P:
287 case AV_PIX_FMT_YUVJ422P:
288 case AV_PIX_FMT_YUVJ444P:
289 memset (data()[0], 0, sample_size(0).height * stride()[0]);
290 memset (data()[1], eight_bit_uv + 1, sample_size(1).height * stride()[1]);
291 memset (data()[2], eight_bit_uv + 1, sample_size(2).height * stride()[2]);
294 case AV_PIX_FMT_YUV422P9LE:
295 case AV_PIX_FMT_YUV444P9LE:
296 yuv_16_black (nine_bit_uv, false);
299 case AV_PIX_FMT_YUV422P9BE:
300 case AV_PIX_FMT_YUV444P9BE:
301 yuv_16_black (swap_16 (nine_bit_uv), false);
304 case AV_PIX_FMT_YUV422P10LE:
305 case AV_PIX_FMT_YUV444P10LE:
306 yuv_16_black (ten_bit_uv, false);
309 case AV_PIX_FMT_YUV422P16LE:
310 case AV_PIX_FMT_YUV444P16LE:
311 yuv_16_black (sixteen_bit_uv, false);
314 case AV_PIX_FMT_YUV444P10BE:
315 case AV_PIX_FMT_YUV422P10BE:
316 yuv_16_black (swap_16 (ten_bit_uv), false);
319 case AV_PIX_FMT_YUVA420P9BE:
320 case AV_PIX_FMT_YUVA422P9BE:
321 case AV_PIX_FMT_YUVA444P9BE:
322 yuv_16_black (swap_16 (nine_bit_uv), true);
325 case AV_PIX_FMT_YUVA420P9LE:
326 case AV_PIX_FMT_YUVA422P9LE:
327 case AV_PIX_FMT_YUVA444P9LE:
328 yuv_16_black (nine_bit_uv, true);
331 case AV_PIX_FMT_YUVA420P10BE:
332 case AV_PIX_FMT_YUVA422P10BE:
333 case AV_PIX_FMT_YUVA444P10BE:
334 yuv_16_black (swap_16 (ten_bit_uv), true);
337 case AV_PIX_FMT_YUVA420P10LE:
338 case AV_PIX_FMT_YUVA422P10LE:
339 case AV_PIX_FMT_YUVA444P10LE:
340 yuv_16_black (ten_bit_uv, true);
343 case AV_PIX_FMT_YUVA420P16BE:
344 case AV_PIX_FMT_YUVA422P16BE:
345 case AV_PIX_FMT_YUVA444P16BE:
346 yuv_16_black (swap_16 (sixteen_bit_uv), true);
349 case AV_PIX_FMT_YUVA420P16LE:
350 case AV_PIX_FMT_YUVA422P16LE:
351 case AV_PIX_FMT_YUVA444P16LE:
352 yuv_16_black (sixteen_bit_uv, true);
355 case AV_PIX_FMT_RGB24:
356 case AV_PIX_FMT_ARGB:
357 case AV_PIX_FMT_RGBA:
358 case AV_PIX_FMT_ABGR:
359 case AV_PIX_FMT_BGRA:
360 case AV_PIX_FMT_RGB555LE:
361 case AV_PIX_FMT_RGB48LE:
362 case AV_PIX_FMT_RGB48BE:
363 case AV_PIX_FMT_XYZ12LE:
364 memset (data()[0], 0, sample_size(0).height * stride()[0]);
367 case AV_PIX_FMT_UYVY422:
369 int const Y = sample_size(0).height;
370 int const X = line_size()[0];
371 uint8_t* p = data()[0];
372 for (int y = 0; y < Y; ++y) {
373 for (int x = 0; x < X / 4; ++x) {
374 *p++ = eight_bit_uv; // Cb
376 *p++ = eight_bit_uv; // Cr
384 throw PixelFormatError ("make_black()", _pixel_format);
389 Image::make_transparent ()
391 if (_pixel_format != AV_PIX_FMT_RGBA) {
392 throw PixelFormatError ("make_transparent()", _pixel_format);
395 memset (data()[0], 0, sample_size(0).height * stride()[0]);
399 Image::alpha_blend (shared_ptr<const Image> other, Position<int> position)
401 DCPOMATIC_ASSERT (other->pixel_format() == AV_PIX_FMT_RGBA);
402 int const other_bpp = 4;
404 int start_tx = position.x;
408 start_ox = -start_tx;
412 int start_ty = position.y;
416 start_oy = -start_ty;
420 switch (_pixel_format) {
421 case AV_PIX_FMT_RGB24:
423 int const this_bpp = 3;
424 for (int ty = start_ty, oy = start_oy; ty < size().height && oy < other->size().height; ++ty, ++oy) {
425 uint8_t* tp = data()[0] + ty * stride()[0] + start_tx * this_bpp;
426 uint8_t* op = other->data()[0] + oy * other->stride()[0];
427 for (int tx = start_tx, ox = start_ox; tx < size().width && ox < other->size().width; ++tx, ++ox) {
428 float const alpha = float (op[3]) / 255;
429 tp[0] = op[0] * alpha + tp[0] * (1 - alpha);
430 tp[1] = op[1] * alpha + tp[1] * (1 - alpha);
431 tp[2] = op[2] * alpha + tp[2] * (1 - alpha);
439 case AV_PIX_FMT_BGRA:
440 case AV_PIX_FMT_RGBA:
442 int const this_bpp = 4;
443 for (int ty = start_ty, oy = start_oy; ty < size().height && oy < other->size().height; ++ty, ++oy) {
444 uint8_t* tp = data()[0] + ty * stride()[0] + start_tx * this_bpp;
445 uint8_t* op = other->data()[0] + oy * other->stride()[0];
446 for (int tx = start_tx, ox = start_ox; tx < size().width && ox < other->size().width; ++tx, ++ox) {
447 float const alpha = float (op[3]) / 255;
448 tp[0] = op[0] * alpha + tp[0] * (1 - alpha);
449 tp[1] = op[1] * alpha + tp[1] * (1 - alpha);
450 tp[2] = op[2] * alpha + tp[2] * (1 - alpha);
451 tp[3] = op[3] * alpha + tp[3] * (1 - alpha);
459 case AV_PIX_FMT_RGB48LE:
461 int const this_bpp = 6;
462 for (int ty = start_ty, oy = start_oy; ty < size().height && oy < other->size().height; ++ty, ++oy) {
463 uint8_t* tp = data()[0] + ty * stride()[0] + start_tx * this_bpp;
464 uint8_t* op = other->data()[0] + oy * other->stride()[0];
465 for (int tx = start_tx, ox = start_ox; tx < size().width && ox < other->size().width; ++tx, ++ox) {
466 float const alpha = float (op[3]) / 255;
467 /* Blend high bytes; the RGBA in op appears to be BGRA */
468 tp[1] = op[2] * alpha + tp[1] * (1 - alpha);
469 tp[3] = op[1] * alpha + tp[3] * (1 - alpha);
470 tp[5] = op[0] * alpha + tp[5] * (1 - alpha);
478 case AV_PIX_FMT_XYZ12LE:
480 int const this_bpp = 6;
481 for (int ty = start_ty, oy = start_oy; ty < size().height && oy < other->size().height; ++ty, ++oy) {
482 uint8_t* tp = data()[0] + ty * stride()[0] + start_tx * this_bpp;
483 uint8_t* op = other->data()[0] + oy * other->stride()[0];
484 for (int tx = start_tx, ox = start_ox; tx < size().width && ox < other->size().width; ++tx, ++ox) {
485 float const alpha = float (op[3]) / 255;
487 /* Convert sRGB to XYZ; op is BGRA */
488 int const x = 0.4124564 + op[2] + 0.3575761 * op[1] + 0.1804375 * op[0];
489 int const y = 0.2126729 + op[2] + 0.7151522 * op[1] + 0.0721750 * op[0];
490 int const z = 0.0193339 + op[2] + 0.1191920 * op[1] + 0.9503041 * op[0];
492 /* Blend high bytes */
493 tp[1] = min (x, 255) * alpha + tp[1] * (1 - alpha);
494 tp[3] = min (y, 255) * alpha + tp[3] * (1 - alpha);
495 tp[5] = min (z, 255) * alpha + tp[5] * (1 - alpha);
504 DCPOMATIC_ASSERT (false);
509 Image::copy (shared_ptr<const Image> other, Position<int> position)
511 /* Only implemented for RGB24 onto RGB24 so far */
512 DCPOMATIC_ASSERT (_pixel_format == AV_PIX_FMT_RGB24 && other->pixel_format() == AV_PIX_FMT_RGB24);
513 DCPOMATIC_ASSERT (position.x >= 0 && position.y >= 0);
515 int const N = min (position.x + other->size().width, size().width) - position.x;
516 for (int ty = position.y, oy = 0; ty < size().height && oy < other->size().height; ++ty, ++oy) {
517 uint8_t * const tp = data()[0] + ty * stride()[0] + position.x * 3;
518 uint8_t * const op = other->data()[0] + oy * other->stride()[0];
519 memcpy (tp, op, N * 3);
524 Image::read_from_socket (shared_ptr<Socket> socket)
526 for (int i = 0; i < planes(); ++i) {
527 uint8_t* p = data()[i];
528 int const lines = sample_size(i).height;
529 for (int y = 0; y < lines; ++y) {
530 socket->read (p, line_size()[i]);
537 Image::write_to_socket (shared_ptr<Socket> socket) const
539 for (int i = 0; i < planes(); ++i) {
540 uint8_t* p = data()[i];
541 int const lines = sample_size(i).height;
542 for (int y = 0; y < lines; ++y) {
543 socket->write (p, line_size()[i]);
550 Image::bytes_per_pixel (int c) const
552 AVPixFmtDescriptor const * d = av_pix_fmt_desc_get(_pixel_format);
554 throw PixelFormatError ("bytes_per_pixel()", _pixel_format);
561 float bpp[4] = { 0, 0, 0, 0 };
563 bpp[0] = floor ((d->comp[0].depth_minus1 + 1 + 7) / 8);
564 if (d->nb_components > 1) {
565 bpp[1] = floor ((d->comp[1].depth_minus1 + 1 + 7) / 8) / pow (2.0f, d->log2_chroma_w);
567 if (d->nb_components > 2) {
568 bpp[2] = floor ((d->comp[2].depth_minus1 + 1 + 7) / 8) / pow (2.0f, d->log2_chroma_w);
570 if (d->nb_components > 3) {
571 bpp[3] = floor ((d->comp[3].depth_minus1 + 1 + 7) / 8) / pow (2.0f, d->log2_chroma_w);
574 if ((d->flags & AV_PIX_FMT_FLAG_PLANAR) == 0) {
575 /* Not planar; sum them up */
576 return bpp[0] + bpp[1] + bpp[2] + bpp[3];
582 /** Construct a Image of a given size and format, allocating memory
585 * @param p Pixel format.
586 * @param s Size in pixels.
588 Image::Image (AVPixelFormat p, dcp::Size s, bool aligned)
599 _data = (uint8_t **) wrapped_av_malloc (4 * sizeof (uint8_t *));
600 _data[0] = _data[1] = _data[2] = _data[3] = 0;
602 _line_size = (int *) wrapped_av_malloc (4 * sizeof (int));
603 _line_size[0] = _line_size[1] = _line_size[2] = _line_size[3] = 0;
605 _stride = (int *) wrapped_av_malloc (4 * sizeof (int));
606 _stride[0] = _stride[1] = _stride[2] = _stride[3] = 0;
608 for (int i = 0; i < planes(); ++i) {
609 _line_size[i] = ceil (_size.width * bytes_per_pixel(i));
610 _stride[i] = stride_round_up (i, _line_size, _aligned ? 32 : 1);
612 /* The assembler function ff_rgb24ToY_avx (in libswscale/x86/input.asm)
613 uses a 16-byte fetch to read three bytes (R/G/B) of image data.
614 Hence on the last pixel of the last line it reads over the end of
615 the actual data by 1 byte. If the width of an image is a multiple
616 of the stride alignment there will be no padding at the end of image lines.
617 OS X crashes on this illegal read, though other operating systems don't
618 seem to mind. The nasty + 1 in this malloc makes sure there is always a byte
619 for that instruction to read safely.
621 Further to the above, valgrind is now telling me that ff_rgb24ToY_ssse3
622 over-reads by more then _avx. I can't follow the code to work out how much,
623 so I'll just over-allocate by 32 bytes and have done with it. Empirical
624 testing suggests that it works.
626 _data[i] = (uint8_t *) wrapped_av_malloc (_stride[i] * sample_size(i).height + 32);
630 Image::Image (Image const & other)
631 : _size (other._size)
632 , _pixel_format (other._pixel_format)
633 , _aligned (other._aligned)
637 for (int i = 0; i < planes(); ++i) {
638 uint8_t* p = _data[i];
639 uint8_t* q = other._data[i];
640 int const lines = sample_size(i).height;
641 for (int j = 0; j < lines; ++j) {
642 memcpy (p, q, _line_size[i]);
644 q += other.stride()[i];
649 Image::Image (AVFrame* frame)
650 : _size (frame->width, frame->height)
651 , _pixel_format (static_cast<AVPixelFormat> (frame->format))
656 for (int i = 0; i < planes(); ++i) {
657 uint8_t* p = _data[i];
658 uint8_t* q = frame->data[i];
659 int const lines = sample_size(i).height;
660 for (int j = 0; j < lines; ++j) {
661 memcpy (p, q, _line_size[i]);
663 /* AVFrame's linesize is what we call `stride' */
664 q += frame->linesize[i];
669 Image::Image (shared_ptr<const Image> other, bool aligned)
670 : _size (other->_size)
671 , _pixel_format (other->_pixel_format)
676 for (int i = 0; i < planes(); ++i) {
677 DCPOMATIC_ASSERT (line_size()[i] == other->line_size()[i]);
678 uint8_t* p = _data[i];
679 uint8_t* q = other->data()[i];
680 int const lines = sample_size(i).height;
681 for (int j = 0; j < lines; ++j) {
682 memcpy (p, q, line_size()[i]);
684 q += other->stride()[i];
690 Image::operator= (Image const & other)
692 if (this == &other) {
702 Image::swap (Image & other)
704 std::swap (_size, other._size);
705 std::swap (_pixel_format, other._pixel_format);
707 for (int i = 0; i < 4; ++i) {
708 std::swap (_data[i], other._data[i]);
709 std::swap (_line_size[i], other._line_size[i]);
710 std::swap (_stride[i], other._stride[i]);
713 std::swap (_aligned, other._aligned);
716 /** Destroy a Image */
719 for (int i = 0; i < planes(); ++i) {
724 av_free (_line_size);
735 Image::line_size () const
741 Image::stride () const
753 Image::aligned () const
759 merge (list<PositionImage> images)
761 if (images.empty ()) {
762 return PositionImage ();
765 if (images.size() == 1) {
766 return images.front ();
769 dcpomatic::Rect<int> all (images.front().position, images.front().image->size().width, images.front().image->size().height);
770 for (list<PositionImage>::const_iterator i = images.begin(); i != images.end(); ++i) {
771 all.extend (dcpomatic::Rect<int> (i->position, i->image->size().width, i->image->size().height));
774 shared_ptr<Image> merged (new Image (images.front().image->pixel_format (), dcp::Size (all.width, all.height), true));
775 merged->make_transparent ();
776 for (list<PositionImage>::const_iterator i = images.begin(); i != images.end(); ++i) {
777 merged->alpha_blend (i->image, i->position - all.position());
780 return PositionImage (merged, all.position ());
784 operator== (Image const & a, Image const & b)
786 if (a.planes() != b.planes() || a.pixel_format() != b.pixel_format() || a.aligned() != b.aligned()) {
790 for (int c = 0; c < a.planes(); ++c) {
791 if (a.sample_size(c).height != b.sample_size(c).height || a.line_size()[c] != b.line_size()[c] || a.stride()[c] != b.stride()[c]) {
795 uint8_t* p = a.data()[c];
796 uint8_t* q = b.data()[c];
797 int const lines = a.sample_size(c).height;
798 for (int y = 0; y < lines; ++y) {
799 if (memcmp (p, q, a.line_size()[c]) != 0) {
812 * @param f Amount to fade by; 0 is black, 1 is no fade.
815 Image::fade (float f)
817 switch (_pixel_format) {
818 case AV_PIX_FMT_YUV420P:
819 case AV_PIX_FMT_YUV422P:
820 case AV_PIX_FMT_YUV444P:
821 case AV_PIX_FMT_YUV411P:
822 case AV_PIX_FMT_YUVJ420P:
823 case AV_PIX_FMT_YUVJ422P:
824 case AV_PIX_FMT_YUVJ444P:
825 case AV_PIX_FMT_RGB24:
826 case AV_PIX_FMT_ARGB:
827 case AV_PIX_FMT_RGBA:
828 case AV_PIX_FMT_ABGR:
829 case AV_PIX_FMT_BGRA:
830 case AV_PIX_FMT_RGB555LE:
832 for (int c = 0; c < 3; ++c) {
833 uint8_t* p = data()[c];
834 int const lines = sample_size(c).height;
835 for (int y = 0; y < lines; ++y) {
837 for (int x = 0; x < line_size()[c]; ++x) {
838 *q = int (float (*q) * f);
846 case AV_PIX_FMT_YUV422P9LE:
847 case AV_PIX_FMT_YUV444P9LE:
848 case AV_PIX_FMT_YUV422P10LE:
849 case AV_PIX_FMT_YUV444P10LE:
850 case AV_PIX_FMT_YUV422P16LE:
851 case AV_PIX_FMT_YUV444P16LE:
852 case AV_PIX_FMT_YUVA420P9LE:
853 case AV_PIX_FMT_YUVA422P9LE:
854 case AV_PIX_FMT_YUVA444P9LE:
855 case AV_PIX_FMT_YUVA420P10LE:
856 case AV_PIX_FMT_YUVA422P10LE:
857 case AV_PIX_FMT_YUVA444P10LE:
858 case AV_PIX_FMT_RGB48LE:
859 case AV_PIX_FMT_XYZ12LE:
860 /* 16-bit little-endian */
861 for (int c = 0; c < 3; ++c) {
862 int const stride_pixels = stride()[c] / 2;
863 int const line_size_pixels = line_size()[c] / 2;
864 uint16_t* p = reinterpret_cast<uint16_t*> (data()[c]);
865 int const lines = sample_size(c).height;
866 for (int y = 0; y < lines; ++y) {
868 for (int x = 0; x < line_size_pixels; ++x) {
869 *q = int (float (*q) * f);
877 case AV_PIX_FMT_YUV422P9BE:
878 case AV_PIX_FMT_YUV444P9BE:
879 case AV_PIX_FMT_YUV444P10BE:
880 case AV_PIX_FMT_YUV422P10BE:
881 case AV_PIX_FMT_YUVA420P9BE:
882 case AV_PIX_FMT_YUVA422P9BE:
883 case AV_PIX_FMT_YUVA444P9BE:
884 case AV_PIX_FMT_YUVA420P10BE:
885 case AV_PIX_FMT_YUVA422P10BE:
886 case AV_PIX_FMT_YUVA444P10BE:
887 case AV_PIX_FMT_YUVA420P16BE:
888 case AV_PIX_FMT_YUVA422P16BE:
889 case AV_PIX_FMT_YUVA444P16BE:
890 case AV_PIX_FMT_RGB48BE:
891 /* 16-bit big-endian */
892 for (int c = 0; c < 3; ++c) {
893 int const stride_pixels = stride()[c] / 2;
894 int const line_size_pixels = line_size()[c] / 2;
895 uint16_t* p = reinterpret_cast<uint16_t*> (data()[c]);
896 int const lines = sample_size(c).height;
897 for (int y = 0; y < lines; ++y) {
899 for (int x = 0; x < line_size_pixels; ++x) {
900 *q = swap_16 (int (float (swap_16 (*q)) * f));
908 case AV_PIX_FMT_UYVY422:
910 int const Y = sample_size(0).height;
911 int const X = line_size()[0];
912 uint8_t* p = data()[0];
913 for (int y = 0; y < Y; ++y) {
914 for (int x = 0; x < X; ++x) {
915 *p = int (float (*p) * f);
923 throw PixelFormatError ("fade()", _pixel_format);