/*
- Copyright (C) 2012-2015 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2012-2016 Carl Hetherington <cth@carlh.net>
- This program is free software; you can redistribute it and/or modify
+ This file is part of DCP-o-matic.
+
+ DCP-o-matic is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
- This program is distributed in the hope that it will be useful,
+ DCP-o-matic is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
#include "timer.h"
#include "rect.h"
#include "util.h"
-#include "md5_digester.h"
#include "dcpomatic_socket.h"
+#include <dcp/rgb_xyz.h>
+#include <dcp/transfer_function.h>
extern "C" {
#include <libswscale/swscale.h>
#include <libavutil/pixfmt.h>
using std::string;
using std::min;
+using std::max;
using std::cout;
using std::cerr;
using std::list;
);
}
-int
-Image::components () const
-{
- AVPixFmtDescriptor const * d = av_pix_fmt_desc_get(_pixel_format);
- if (!d) {
- throw PixelFormatError ("components()", _pixel_format);
- }
-
- return d->nb_components;
-}
-
/** @return Number of planes */
int
Image::planes () const
return d->nb_components;
}
-/** Crop this image, scale it to `inter_size' and then place it in a black frame of `out_size' */
+/** Crop this image, scale it to `inter_size' and then place it in a black frame of `out_size'.
+ * @param crop Amount to crop by.
+ * @param inter_size Size to scale the cropped image to.
+ * @param out_size Size of output frame; if this is larger than inter_size there will be black padding.
+ * @param yuv_to_rgb YUV to RGB transformation to use, if required.
+ * @param out_format Output pixel format.
+ * @param out_aligned true to make the output image aligned.
+ * @param fast Try to be fast at the possible expense of quality; at present this means using
+ * fast bilinear rather than bicubic scaling.
+ */
shared_ptr<Image>
Image::crop_scale_window (
- Crop crop, dcp::Size inter_size, dcp::Size out_size, dcp::YUVToRGB yuv_to_rgb, AVPixelFormat out_format, bool out_aligned
+ Crop crop, dcp::Size inter_size, dcp::Size out_size, dcp::YUVToRGB yuv_to_rgb, AVPixelFormat out_format, bool out_aligned, bool fast
) const
{
/* Empirical testing suggests that sws_scale() will crash if
struct SwsContext* scale_context = sws_getContext (
cropped_size.width, cropped_size.height, pixel_format(),
inter_size.width, inter_size.height, out_format,
- SWS_BICUBIC, 0, 0, 0
+ fast ? SWS_FAST_BILINEAR : SWS_BICUBIC, 0, 0, 0
);
if (!scale_context) {
return out;
}
+/** @param out_size Size to scale to.
+ * @param yuv_to_rgb YUVToRGB transform transform to use, if required.
+ * @param out_format Output pixel format.
+ * @param out_aligned true to make an aligned output image.
+ * @param fast Try to be fast at the possible expense of quality; at present this means using
+ * fast bilinear rather than bicubic scaling.
+ */
shared_ptr<Image>
-Image::scale (dcp::Size out_size, dcp::YUVToRGB yuv_to_rgb, AVPixelFormat out_format, bool out_aligned) const
+Image::scale (dcp::Size out_size, dcp::YUVToRGB yuv_to_rgb, AVPixelFormat out_format, bool out_aligned, bool fast) const
{
/* Empirical testing suggests that sws_scale() will crash if
the input image is not aligned.
struct SwsContext* scale_context = sws_getContext (
size().width, size().height, pixel_format(),
out_size.width, out_size.height, out_format,
- SWS_BICUBIC, 0, 0, 0
+ fast ? SWS_FAST_BILINEAR : SWS_BICUBIC, 0, 0, 0
);
DCPOMATIC_ASSERT (yuv_to_rgb < dcp::YUV_TO_RGB_COUNT);
void
Image::alpha_blend (shared_ptr<const Image> other, Position<int> position)
{
+ /* We're blending RGBA images; first byte is blue, second byte is green, third byte blue, fourth byte alpha */
DCPOMATIC_ASSERT (other->pixel_format() == AV_PIX_FMT_RGBA);
int const other_bpp = 4;
switch (_pixel_format) {
case AV_PIX_FMT_RGB24:
{
+ /* Going onto RGB24. First byte is red, second green, third blue */
int const this_bpp = 3;
for (int ty = start_ty, oy = start_oy; ty < size().height && oy < other->size().height; ++ty, ++oy) {
uint8_t* tp = data()[0] + ty * stride()[0] + start_tx * this_bpp;
uint8_t* op = other->data()[0] + oy * other->stride()[0];
for (int tx = start_tx, ox = start_ox; tx < size().width && ox < other->size().width; ++tx, ++ox) {
float const alpha = float (op[3]) / 255;
- tp[0] = op[0] * alpha + tp[0] * (1 - alpha);
+ tp[0] = op[2] * alpha + tp[0] * (1 - alpha);
tp[1] = op[1] * alpha + tp[1] * (1 - alpha);
- tp[2] = op[2] * alpha + tp[2] * (1 - alpha);
+ tp[2] = op[0] * alpha + tp[2] * (1 - alpha);
tp += this_bpp;
op += other_bpp;
}
case AV_PIX_FMT_XYZ12LE:
{
- boost::numeric::ublas::matrix<double> matrix = dcp::ColourConversion::srgb_to_xyz().rgb_to_xyz();
+ dcp::ColourConversion conv = dcp::ColourConversion::srgb_to_xyz();
+ double fast_matrix[9];
+ dcp::combined_rgb_to_xyz (conv, fast_matrix);
+ double const * lut_in = conv.in()->lut (8, false);
+ double const * lut_out = conv.out()->lut (16, true);
int const this_bpp = 6;
for (int ty = start_ty, oy = start_oy; ty < size().height && oy < other->size().height; ++ty, ++oy) {
- uint8_t* tp = data()[0] + ty * stride()[0] + start_tx * this_bpp;
+ uint16_t* tp = reinterpret_cast<uint16_t*> (data()[0] + ty * stride()[0] + start_tx * this_bpp);
uint8_t* op = other->data()[0] + oy * other->stride()[0];
for (int tx = start_tx, ox = start_ox; tx < size().width && ox < other->size().width; ++tx, ++ox) {
float const alpha = float (op[3]) / 255;
- /* Convert sRGB to XYZ; op is BGRA */
- int const x = matrix(0, 0) * op[2] + matrix(0, 1) * op[1] + matrix(0, 2) * op[0];
- int const y = matrix(1, 0) * op[2] + matrix(1, 1) * op[1] + matrix(1, 2) * op[0];
- int const z = matrix(2, 0) * op[2] + matrix(2, 1) * op[1] + matrix(2, 2) * op[0];
+ /* Convert sRGB to XYZ; op is BGRA. First, input gamma LUT */
+ double const r = lut_in[op[2]];
+ double const g = lut_in[op[1]];
+ double const b = lut_in[op[0]];
- /* Blend high bytes */
- tp[1] = min (x, 255) * alpha + tp[1] * (1 - alpha);
- tp[3] = min (y, 255) * alpha + tp[3] * (1 - alpha);
- tp[5] = min (z, 255) * alpha + tp[5] * (1 - alpha);
+ /* RGB to XYZ, including Bradford transform and DCI companding */
+ double const x = max (0.0, min (65535.0, r * fast_matrix[0] + g * fast_matrix[1] + b * fast_matrix[2]));
+ double const y = max (0.0, min (65535.0, r * fast_matrix[3] + g * fast_matrix[4] + b * fast_matrix[5]));
+ double const z = max (0.0, min (65535.0, r * fast_matrix[6] + g * fast_matrix[7] + b * fast_matrix[8]));
- tp += this_bpp;
+ /* Out gamma LUT and blend */
+ tp[0] = lrint(lut_out[lrint(x)] * 65535) * alpha + tp[0] * (1 - alpha);
+ tp[1] = lrint(lut_out[lrint(y)] * 65535) * alpha + tp[1] * (1 - alpha);
+ tp[2] = lrint(lut_out[lrint(z)] * 65535) * alpha + tp[2] * (1 - alpha);
+
+ tp += this_bpp / 2;
op += other_bpp;
}
}
*
* @param p Pixel format.
* @param s Size in pixels.
+ * @param aligned true to make each row of this image aligned to a 32-byte boundary.
* @param extra_pixels Amount of extra "run-off" memory to allocate at the end of each plane in pixels.
*/
Image::Image (AVPixelFormat p, dcp::Size s, bool aligned, int extra_pixels)
}
std::swap (_aligned, other._aligned);
+ std::swap (_extra_pixels, other._extra_pixels);
}
/** Destroy a Image */
projects / dcpomatic.git / blobdiff