/*
- Copyright (C) 2012-2014 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2012-2021 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/>.
*/
+
/** @file src/image.cc
* @brief A class to describe a video image.
*/
-#include <iostream>
+
+#include "compose.hpp"
+#include "dcpomatic_assert.h"
+#include "dcpomatic_socket.h"
+#include "enum_indexed_vector.h"
+#include "exceptions.h"
+#include "image.h"
+#include "maths_util.h"
+#include "memory_util.h"
+#include "rect.h"
+#include "timer.h"
+#include <dcp/rgb_xyz.h>
+#include <dcp/transfer_function.h>
+#include <dcp/warnings.h>
+LIBDCP_DISABLE_WARNINGS
extern "C" {
-#include <libswscale/swscale.h>
-#include <libavutil/pixfmt.h>
+#include <libavutil/frame.h>
#include <libavutil/pixdesc.h>
+#include <libavutil/pixfmt.h>
+#include <libswscale/swscale.h>
}
-#include "image.h"
-#include "exceptions.h"
-#include "scaler.h"
-#include "timer.h"
-#include "rect.h"
+LIBDCP_ENABLE_WARNINGS
+#if HAVE_VALGRIND_MEMCHECK_H
+#include <valgrind/memcheck.h>
+#endif
+#include <iostream>
+
#include "i18n.h"
-using std::string;
-using std::min;
-using std::cout;
+
using std::cerr;
+using std::cout;
using std::list;
-using boost::shared_ptr;
+using std::make_shared;
+using std::max;
+using std::min;
+using std::runtime_error;
+using std::shared_ptr;
+using std::string;
using dcp::Size;
+
+/** The memory alignment, in bytes, used for each row of an image if Alignment::PADDED is requested */
+int constexpr ALIGNMENT = 64;
+
+/* U/V black value for 8-bit colour */
+static uint8_t const eight_bit_uv = (1 << 7) - 1;
+/* U/V black value for 9-bit colour */
+static uint16_t const nine_bit_uv = (1 << 8) - 1;
+/* U/V black value for 10-bit colour */
+static uint16_t const ten_bit_uv = (1 << 9) - 1;
+/* U/V black value for 16-bit colour */
+static uint16_t const sixteen_bit_uv = (1 << 15) - 1;
+
+
int
-Image::line_factor (int n) const
+Image::vertical_factor (int n) const
{
if (n == 0) {
return 1;
}
- AVPixFmtDescriptor const * d = av_pix_fmt_desc_get(_pixel_format);
+ auto d = av_pix_fmt_desc_get(_pixel_format);
if (!d) {
- throw PixelFormatError ("lines()", _pixel_format);
+ throw PixelFormatError ("line_factor()", _pixel_format);
}
-
- return pow (2.0f, d->log2_chroma_h);
+
+ return lrintf(powf(2.0f, d->log2_chroma_h));
}
+int
+Image::horizontal_factor (int n) const
+{
+ if (n == 0) {
+ return 1;
+ }
+
+ auto d = av_pix_fmt_desc_get(_pixel_format);
+ if (!d) {
+ throw PixelFormatError ("sample_size()", _pixel_format);
+ }
+
+ return lrintf(powf(2.0f, d->log2_chroma_w));
+}
+
+
/** @param n Component index.
- * @return Number of lines in the image for the given component.
+ * @return Number of samples (i.e. pixels, unless sub-sampled) in each direction for this component.
*/
-int
-Image::lines (int n) const
+dcp::Size
+Image::sample_size (int n) const
{
- return rint (ceil (static_cast<double>(size().height) / line_factor (n)));
+ return dcp::Size (
+ lrint (ceil(static_cast<double>(size().width) / horizontal_factor(n))),
+ lrint (ceil(static_cast<double>(size().height) / vertical_factor(n)))
+ );
}
-/** @return Number of components */
+
+/** @return Number of planes */
int
-Image::components () const
+Image::planes () const
{
- AVPixFmtDescriptor const * d = av_pix_fmt_desc_get(_pixel_format);
+ if (_pixel_format == AV_PIX_FMT_PAL8) {
+ return 2;
+ }
+
+ auto d = av_pix_fmt_desc_get(_pixel_format);
if (!d) {
- throw PixelFormatError ("components()", _pixel_format);
+ throw PixelFormatError ("planes()", _pixel_format);
}
- if ((d->flags & PIX_FMT_PLANAR) == 0) {
+ if ((d->flags & AV_PIX_FMT_FLAG_PLANAR) == 0) {
return 1;
}
-
+
return d->nb_components;
}
-/** Crop this image, scale it to `inter_size' and then place it in a black frame of `out_size' */
+
+static
+int
+round_width_for_subsampling (int p, AVPixFmtDescriptor const * desc)
+{
+ return p & ~ ((1 << desc->log2_chroma_w) - 1);
+}
+
+
+static
+int
+round_height_for_subsampling (int p, AVPixFmtDescriptor const * desc)
+{
+ return p & ~ ((1 << desc->log2_chroma_h) - 1);
+}
+
+
+/** 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 video_range Video range of the image.
+ * @param out_format Output pixel format.
+ * @param out_aligned true to make the output image aligned.
+ * @param out_video_range Video range to use for the 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::crop_scale_window (Crop crop, dcp::Size inter_size, dcp::Size out_size, Scaler const * scaler, AVPixelFormat out_format, bool out_aligned) const
+Image::crop_scale_window (
+ Crop crop,
+ dcp::Size inter_size,
+ dcp::Size out_size,
+ dcp::YUVToRGB yuv_to_rgb,
+ VideoRange video_range,
+ AVPixelFormat out_format,
+ VideoRange out_video_range,
+ Alignment out_alignment,
+ bool fast
+ ) const
{
- assert (scaler);
/* Empirical testing suggests that sws_scale() will crash if
- the input image is not aligned.
+ the input image is not padded.
*/
- assert (aligned ());
+ DCPOMATIC_ASSERT (alignment() == Alignment::PADDED);
- assert (out_size.width >= inter_size.width);
- assert (out_size.height >= inter_size.height);
+ DCPOMATIC_ASSERT (out_size.width >= inter_size.width);
+ DCPOMATIC_ASSERT (out_size.height >= inter_size.height);
- /* Here's an image of out_size */
- shared_ptr<Image> out (new Image (out_format, out_size, out_aligned));
+ auto out = make_shared<Image>(out_format, out_size, out_alignment);
out->make_black ();
+ auto in_desc = av_pix_fmt_desc_get (_pixel_format);
+ if (!in_desc) {
+ throw PixelFormatError ("crop_scale_window()", _pixel_format);
+ }
+
+ /* Round down so that we crop only the number of pixels that is straightforward
+ * considering any subsampling.
+ */
+ Crop corrected_crop(
+ round_width_for_subsampling(crop.left, in_desc),
+ round_width_for_subsampling(crop.right, in_desc),
+ round_height_for_subsampling(crop.top, in_desc),
+ round_height_for_subsampling(crop.bottom, in_desc)
+ );
+
+ /* Also check that we aren't cropping more image than there actually is */
+ if ((corrected_crop.left + corrected_crop.right) >= (size().width - 4)) {
+ corrected_crop.left = 0;
+ corrected_crop.right = size().width - 4;
+ }
+
+ if ((corrected_crop.top + corrected_crop.bottom) >= (size().height - 4)) {
+ corrected_crop.top = 0;
+ corrected_crop.bottom = size().height - 4;
+ }
+
/* Size of the image after any crop */
- dcp::Size const cropped_size = crop.apply (size ());
+ auto const cropped_size = corrected_crop.apply (size());
/* Scale context for a scale from cropped_size to inter_size */
- struct SwsContext* scale_context = sws_getContext (
+ auto scale_context = sws_getContext (
cropped_size.width, cropped_size.height, pixel_format(),
inter_size.width, inter_size.height, out_format,
- scaler->ffmpeg_id (), 0, 0, 0
+ fast ? SWS_FAST_BILINEAR : SWS_BICUBIC, 0, 0, 0
);
if (!scale_context) {
- throw StringError (N_("Could not allocate SwsContext"));
+ throw runtime_error (N_("Could not allocate SwsContext"));
}
+ DCPOMATIC_ASSERT (yuv_to_rgb < dcp::YUVToRGB::COUNT);
+ EnumIndexedVector<int, dcp::YUVToRGB> lut;
+ lut[dcp::YUVToRGB::REC601] = SWS_CS_ITU601;
+ lut[dcp::YUVToRGB::REC709] = SWS_CS_ITU709;
+ lut[dcp::YUVToRGB::REC2020] = SWS_CS_BT2020;
+
+ /* The 3rd parameter here is:
+ 0 -> source range MPEG (i.e. "video", 16-235)
+ 1 -> source range JPEG (i.e. "full", 0-255)
+ And the 5th:
+ 0 -> destination range MPEG (i.e. "video", 16-235)
+ 1 -> destination range JPEG (i.e. "full", 0-255)
+
+ But remember: sws_setColorspaceDetails ignores these
+ parameters unless the both source and destination images
+ are isYUV or isGray. (If either is not, it uses video range).
+ */
+ sws_setColorspaceDetails (
+ scale_context,
+ sws_getCoefficients(lut[yuv_to_rgb]), video_range == VideoRange::VIDEO ? 0 : 1,
+ sws_getCoefficients(lut[yuv_to_rgb]), out_video_range == VideoRange::VIDEO ? 0 : 1,
+ 0, 1 << 16, 1 << 16
+ );
+
/* Prepare input data pointers with crop */
- uint8_t* scale_in_data[components()];
- for (int c = 0; c < components(); ++c) {
- scale_in_data[c] = data()[c] + int (rint (bytes_per_pixel(c) * crop.left)) + stride()[c] * (crop.top / line_factor(c));
+ uint8_t* scale_in_data[planes()];
+ for (int c = 0; c < planes(); ++c) {
+ int const x = lrintf(bytes_per_pixel(c) * corrected_crop.left);
+ scale_in_data[c] = data()[c] + x + stride()[c] * (corrected_crop.top / vertical_factor(c));
+ }
+
+ auto out_desc = av_pix_fmt_desc_get (out_format);
+ if (!out_desc) {
+ throw PixelFormatError ("crop_scale_window()", out_format);
}
/* Corner of the image within out_size */
- Position<int> const corner ((out_size.width - inter_size.width) / 2, (out_size.height - inter_size.height) / 2);
+ Position<int> const corner (
+ round_width_for_subsampling((out_size.width - inter_size.width) / 2, out_desc),
+ round_height_for_subsampling((out_size.height - inter_size.height) / 2, out_desc)
+ );
- uint8_t* scale_out_data[out->components()];
- for (int c = 0; c < out->components(); ++c) {
- scale_out_data[c] = out->data()[c] + int (rint (out->bytes_per_pixel(c) * corner.x)) + out->stride()[c] * corner.y;
+ uint8_t* scale_out_data[out->planes()];
+ for (int c = 0; c < out->planes(); ++c) {
+ int const x = lrintf(out->bytes_per_pixel(c) * corner.x);
+ scale_out_data[c] = out->data()[c] + x + out->stride()[c] * (corner.y / out->vertical_factor(c));
}
sws_scale (
sws_freeContext (scale_context);
- return out;
+ /* There are some cases where there will be unwanted image data left in the image at this point:
+ *
+ * 1. When we are cropping without any scaling or pixel format conversion.
+ * 2. When we are scaling to certain sizes and placing the result into a larger
+ * black frame.
+ *
+ * Clear out the sides of the image to take care of those cases.
+ */
+ auto const pad = (out_size.width - inter_size.width) / 2;
+ out->make_part_black(0, pad);
+ out->make_part_black(corner.x + inter_size.width, pad);
+
+ if (
+ video_range == VideoRange::VIDEO &&
+ out_video_range == VideoRange::FULL &&
+ av_pix_fmt_desc_get(_pixel_format)->flags & AV_PIX_FMT_FLAG_RGB
+ ) {
+ /* libswscale will not convert video range for RGB sources, so we have to do it ourselves */
+ out->video_range_to_full_range ();
+ }
+
+ return out;
}
+
shared_ptr<Image>
-Image::scale (dcp::Size out_size, Scaler const * scaler, AVPixelFormat out_format, bool out_aligned) const
+Image::convert_pixel_format (dcp::YUVToRGB yuv_to_rgb, AVPixelFormat out_format, Alignment out_alignment, bool fast) const
+{
+ return scale(size(), yuv_to_rgb, out_format, out_alignment, fast);
+}
+
+
+/** @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_alignment Output alignment.
+ * @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, Alignment out_alignment, bool fast) const
{
- assert (scaler);
/* Empirical testing suggests that sws_scale() will crash if
- the input image is not aligned.
+ the input image alignment is not PADDED.
*/
- assert (aligned ());
-
- shared_ptr<Image> scaled (new Image (out_format, out_size, out_aligned));
+ DCPOMATIC_ASSERT (alignment() == Alignment::PADDED);
- struct SwsContext* scale_context = sws_getContext (
+ auto scaled = make_shared<Image>(out_format, out_size, out_alignment);
+ auto scale_context = sws_getContext (
size().width, size().height, pixel_format(),
out_size.width, out_size.height, out_format,
- scaler->ffmpeg_id (), 0, 0, 0
+ (fast ? SWS_FAST_BILINEAR : SWS_BICUBIC) | SWS_ACCURATE_RND, 0, 0, 0
+ );
+
+ DCPOMATIC_ASSERT (yuv_to_rgb < dcp::YUVToRGB::COUNT);
+ EnumIndexedVector<int, dcp::YUVToRGB> lut;
+ lut[dcp::YUVToRGB::REC601] = SWS_CS_ITU601;
+ lut[dcp::YUVToRGB::REC709] = SWS_CS_ITU709;
+ lut[dcp::YUVToRGB::REC2020] = SWS_CS_BT2020;
+
+ /* The 3rd parameter here is:
+ 0 -> source range MPEG (i.e. "video", 16-235)
+ 1 -> source range JPEG (i.e. "full", 0-255)
+ And the 5th:
+ 0 -> destination range MPEG (i.e. "video", 16-235)
+ 1 -> destination range JPEG (i.e. "full", 0-255)
+
+ But remember: sws_setColorspaceDetails ignores these
+ parameters unless the corresponding image isYUV or isGray.
+ (If it's neither, it uses video range).
+ */
+ sws_setColorspaceDetails (
+ scale_context,
+ sws_getCoefficients(lut[yuv_to_rgb]), 0,
+ sws_getCoefficients(lut[yuv_to_rgb]), 0,
+ 0, 1 << 16, 1 << 16
);
sws_scale (
return scaled;
}
-shared_ptr<Image>
-Image::crop (Crop crop, bool aligned) const
-{
- dcp::Size cropped_size = crop.apply (size ());
- shared_ptr<Image> out (new Image (pixel_format(), cropped_size, aligned));
-
- for (int c = 0; c < components(); ++c) {
- int const crop_left_in_bytes = bytes_per_pixel(c) * crop.left;
- /* bytes_per_pixel() could be a fraction; in this case the stride will be rounded
- up, and we need to make sure that we copy over the width (up to the stride)
- rather than short of the width; hence the ceil() here.
- */
- int const cropped_width_in_bytes = ceil (bytes_per_pixel(c) * cropped_size.width);
-
- /* Start of the source line, cropped from the top but not the left */
- uint8_t* in_p = data()[c] + (crop.top / out->line_factor(c)) * stride()[c];
- uint8_t* out_p = out->data()[c];
-
- for (int y = 0; y < out->lines(c); ++y) {
- memcpy (out_p, in_p + crop_left_in_bytes, cropped_width_in_bytes);
- in_p += stride()[c];
- out_p += out->stride()[c];
- }
- }
-
- return out;
-}
/** Blacken a YUV image whose bits per pixel is rounded up to 16 */
void
Image::yuv_16_black (uint16_t v, bool alpha)
{
- memset (data()[0], 0, lines(0) * stride()[0]);
+ memset (data()[0], 0, sample_size(0).height * stride()[0]);
for (int i = 1; i < 3; ++i) {
- int16_t* p = reinterpret_cast<int16_t*> (data()[i]);
- for (int y = 0; y < lines(i); ++y) {
+ auto p = reinterpret_cast<int16_t*> (data()[i]);
+ int const lines = sample_size(i).height;
+ for (int y = 0; y < lines; ++y) {
/* We divide by 2 here because we are writing 2 bytes at a time */
for (int x = 0; x < line_size()[i] / 2; ++x) {
p[x] = v;
}
if (alpha) {
- memset (data()[3], 0, lines(3) * stride()[3]);
+ memset (data()[3], 0, sample_size(3).height * stride()[3]);
}
}
+
uint16_t
Image::swap_16 (uint16_t v)
{
return ((v >> 8) & 0xff) | ((v & 0xff) << 8);
}
+
+void
+Image::make_part_black (int const start, int const width)
+{
+ auto y_part = [&]() {
+ int const bpp = bytes_per_pixel(0);
+ int const h = sample_size(0).height;
+ int const s = stride()[0];
+ auto p = data()[0];
+ for (int y = 0; y < h; ++y) {
+ memset (p + start * bpp, 0, width * bpp);
+ p += s;
+ }
+ };
+
+ switch (_pixel_format) {
+ case AV_PIX_FMT_RGB24:
+ case AV_PIX_FMT_ARGB:
+ case AV_PIX_FMT_RGBA:
+ case AV_PIX_FMT_ABGR:
+ case AV_PIX_FMT_BGRA:
+ case AV_PIX_FMT_RGB555LE:
+ case AV_PIX_FMT_RGB48LE:
+ case AV_PIX_FMT_RGB48BE:
+ case AV_PIX_FMT_XYZ12LE:
+ {
+ int const h = sample_size(0).height;
+ int const bpp = bytes_per_pixel(0);
+ int const s = stride()[0];
+ uint8_t* p = data()[0];
+ for (int y = 0; y < h; y++) {
+ memset (p + start * bpp, 0, width * bpp);
+ p += s;
+ }
+ break;
+ }
+ case AV_PIX_FMT_YUV420P:
+ {
+ y_part ();
+ for (int i = 1; i < 3; ++i) {
+ auto p = data()[i];
+ int const h = sample_size(i).height;
+ for (int y = 0; y < h; ++y) {
+ for (int x = start / 2; x < (start + width) / 2; ++x) {
+ p[x] = eight_bit_uv;
+ }
+ p += stride()[i];
+ }
+ }
+ break;
+ }
+ case AV_PIX_FMT_YUV422P10LE:
+ {
+ y_part ();
+ for (int i = 1; i < 3; ++i) {
+ auto p = reinterpret_cast<int16_t*>(data()[i]);
+ int const h = sample_size(i).height;
+ for (int y = 0; y < h; ++y) {
+ for (int x = start / 2; x < (start + width) / 2; ++x) {
+ p[x] = ten_bit_uv;
+ }
+ p += stride()[i] / 2;
+ }
+ }
+ break;
+ }
+ case AV_PIX_FMT_YUV444P10LE:
+ {
+ y_part();
+ for (int i = 1; i < 3; ++i) {
+ auto p = reinterpret_cast<int16_t*>(data()[i]);
+ int const h = sample_size(i).height;
+ for (int y = 0; y < h; ++y) {
+ for (int x = start; x < (start + width); ++x) {
+ p[x] = ten_bit_uv;
+ }
+ p += stride()[i] / 2;
+ }
+ }
+ break;
+ }
+ default:
+ throw PixelFormatError ("make_part_black()", _pixel_format);
+ }
+}
+
+
void
Image::make_black ()
{
- /* U/V black value for 8-bit colour */
- static uint8_t const eight_bit_uv = (1 << 7) - 1;
- /* U/V black value for 9-bit colour */
- static uint16_t const nine_bit_uv = (1 << 8) - 1;
- /* U/V black value for 10-bit colour */
- static uint16_t const ten_bit_uv = (1 << 9) - 1;
- /* U/V black value for 16-bit colour */
- static uint16_t const sixteen_bit_uv = (1 << 15) - 1;
-
switch (_pixel_format) {
- case PIX_FMT_YUV420P:
- case PIX_FMT_YUV422P:
- case PIX_FMT_YUV444P:
- case PIX_FMT_YUV411P:
- memset (data()[0], 0, lines(0) * stride()[0]);
- memset (data()[1], eight_bit_uv, lines(1) * stride()[1]);
- memset (data()[2], eight_bit_uv, lines(2) * stride()[2]);
+ case AV_PIX_FMT_YUV420P:
+ case AV_PIX_FMT_YUV422P:
+ case AV_PIX_FMT_YUV444P:
+ case AV_PIX_FMT_YUV411P:
+ memset (data()[0], 0, sample_size(0).height * stride()[0]);
+ memset (data()[1], eight_bit_uv, sample_size(1).height * stride()[1]);
+ memset (data()[2], eight_bit_uv, sample_size(2).height * stride()[2]);
break;
- case PIX_FMT_YUVJ420P:
- case PIX_FMT_YUVJ422P:
- case PIX_FMT_YUVJ444P:
- memset (data()[0], 0, lines(0) * stride()[0]);
- memset (data()[1], eight_bit_uv + 1, lines(1) * stride()[1]);
- memset (data()[2], eight_bit_uv + 1, lines(2) * stride()[2]);
+ case AV_PIX_FMT_YUVJ420P:
+ case AV_PIX_FMT_YUVJ422P:
+ case AV_PIX_FMT_YUVJ444P:
+ memset (data()[0], 0, sample_size(0).height * stride()[0]);
+ memset (data()[1], eight_bit_uv + 1, sample_size(1).height * stride()[1]);
+ memset (data()[2], eight_bit_uv + 1, sample_size(2).height * stride()[2]);
break;
- case PIX_FMT_YUV422P9LE:
- case PIX_FMT_YUV444P9LE:
+ case AV_PIX_FMT_YUV422P9LE:
+ case AV_PIX_FMT_YUV444P9LE:
yuv_16_black (nine_bit_uv, false);
break;
- case PIX_FMT_YUV422P9BE:
- case PIX_FMT_YUV444P9BE:
+ case AV_PIX_FMT_YUV422P9BE:
+ case AV_PIX_FMT_YUV444P9BE:
yuv_16_black (swap_16 (nine_bit_uv), false);
break;
-
- case PIX_FMT_YUV422P10LE:
- case PIX_FMT_YUV444P10LE:
+
+ case AV_PIX_FMT_YUV422P10LE:
+ case AV_PIX_FMT_YUV444P10LE:
yuv_16_black (ten_bit_uv, false);
break;
- case PIX_FMT_YUV422P16LE:
- case PIX_FMT_YUV444P16LE:
+ case AV_PIX_FMT_YUV422P16LE:
+ case AV_PIX_FMT_YUV444P16LE:
yuv_16_black (sixteen_bit_uv, false);
break;
-
- case PIX_FMT_YUV444P10BE:
- case PIX_FMT_YUV422P10BE:
+
+ case AV_PIX_FMT_YUV444P10BE:
+ case AV_PIX_FMT_YUV422P10BE:
yuv_16_black (swap_16 (ten_bit_uv), false);
break;
case AV_PIX_FMT_YUVA444P9BE:
yuv_16_black (swap_16 (nine_bit_uv), true);
break;
-
+
case AV_PIX_FMT_YUVA420P9LE:
case AV_PIX_FMT_YUVA422P9LE:
case AV_PIX_FMT_YUVA444P9LE:
yuv_16_black (nine_bit_uv, true);
break;
-
+
case AV_PIX_FMT_YUVA420P10BE:
case AV_PIX_FMT_YUVA422P10BE:
case AV_PIX_FMT_YUVA444P10BE:
yuv_16_black (swap_16 (ten_bit_uv), true);
break;
-
+
case AV_PIX_FMT_YUVA420P10LE:
case AV_PIX_FMT_YUVA422P10LE:
case AV_PIX_FMT_YUVA444P10LE:
yuv_16_black (ten_bit_uv, true);
break;
-
+
case AV_PIX_FMT_YUVA420P16BE:
case AV_PIX_FMT_YUVA422P16BE:
case AV_PIX_FMT_YUVA444P16BE:
yuv_16_black (swap_16 (sixteen_bit_uv), true);
break;
-
+
case AV_PIX_FMT_YUVA420P16LE:
case AV_PIX_FMT_YUVA422P16LE:
case AV_PIX_FMT_YUVA444P16LE:
yuv_16_black (sixteen_bit_uv, true);
break;
- case PIX_FMT_RGB24:
- case PIX_FMT_ARGB:
- case PIX_FMT_RGBA:
- case PIX_FMT_ABGR:
- case PIX_FMT_BGRA:
- memset (data()[0], 0, lines(0) * stride()[0]);
+ case AV_PIX_FMT_RGB24:
+ case AV_PIX_FMT_ARGB:
+ case AV_PIX_FMT_RGBA:
+ case AV_PIX_FMT_ABGR:
+ case AV_PIX_FMT_BGRA:
+ case AV_PIX_FMT_RGB555LE:
+ case AV_PIX_FMT_RGB48LE:
+ case AV_PIX_FMT_RGB48BE:
+ case AV_PIX_FMT_XYZ12LE:
+ memset (data()[0], 0, sample_size(0).height * stride()[0]);
break;
- case PIX_FMT_UYVY422:
+ case AV_PIX_FMT_UYVY422:
{
- int const Y = lines(0);
+ int const Y = sample_size(0).height;
int const X = line_size()[0];
uint8_t* p = data()[0];
for (int y = 0; y < Y; ++y) {
}
}
+
void
Image::make_transparent ()
{
- if (_pixel_format != PIX_FMT_RGBA) {
+ if (_pixel_format != AV_PIX_FMT_BGRA && _pixel_format != AV_PIX_FMT_RGBA && _pixel_format != AV_PIX_FMT_RGBA64BE) {
throw PixelFormatError ("make_transparent()", _pixel_format);
}
- memset (data()[0], 0, lines(0) * stride()[0]);
+ memset (data()[0], 0, sample_size(0).height * stride()[0]);
}
+
+struct TargetParams
+{
+ int start_x;
+ int start_y;
+ dcp::Size size;
+ uint8_t* const* data;
+ int const* stride;
+ int bpp;
+
+ uint8_t* line_pointer(int y) const {
+ return data[0] + y * stride[0] + start_x * bpp;
+ }
+};
+
+
+struct OtherParams
+{
+ int start_x;
+ int start_y;
+ dcp::Size size;
+ uint8_t* const* data;
+ int const* stride;
+ int bpp;
+
+ uint8_t* line_pointer(int y) const {
+ return data[0] + y * stride[0];
+ }
+
+ float alpha_divisor() const {
+ return pow(2, bpp * 2) - 1;
+ }
+};
+
+
+template <class OtherType>
void
-Image::alpha_blend (shared_ptr<const Image> other, Position<int> position)
+alpha_blend_onto_rgb24(TargetParams const& target, OtherParams const& other, int red, int blue, std::function<float (OtherType*)> get, int value_divisor)
+{
+ /* Going onto RGB24. First byte is red, second green, third blue */
+ auto const alpha_divisor = other.alpha_divisor();
+ for (int ty = target.start_y, oy = other.start_y; ty < target.size.height && oy < other.size.height; ++ty, ++oy) {
+ auto tp = target.line_pointer(ty);
+ auto op = reinterpret_cast<OtherType*>(other.line_pointer(oy));
+ for (int tx = target.start_x, ox = other.start_x; tx < target.size.width && ox < other.size.width; ++tx, ++ox) {
+ float const alpha = get(op + 3) / alpha_divisor;
+ tp[0] = (get(op + red) / value_divisor) * alpha + tp[0] * (1 - alpha);
+ tp[1] = (get(op + 1) / value_divisor) * alpha + tp[1] * (1 - alpha);
+ tp[2] = (get(op + blue) / value_divisor) * alpha + tp[2] * (1 - alpha);
+
+ tp += target.bpp;
+ op += other.bpp / sizeof(OtherType);
+ }
+ }
+}
+
+
+template <class OtherType>
+void
+alpha_blend_onto_bgra(TargetParams const& target, OtherParams const& other, int red, int blue, std::function<float (OtherType*)> get, int value_divisor)
+{
+ auto const alpha_divisor = other.alpha_divisor();
+ for (int ty = target.start_y, oy = other.start_y; ty < target.size.height && oy < other.size.height; ++ty, ++oy) {
+ auto tp = target.line_pointer(ty);
+ auto op = reinterpret_cast<OtherType*>(other.line_pointer(oy));
+ for (int tx = target.start_x, ox = other.start_x; tx < target.size.width && ox < other.size.width; ++tx, ++ox) {
+ float const alpha = get(op + 3) / alpha_divisor;
+ tp[0] = (get(op + blue) / value_divisor) * alpha + tp[0] * (1 - alpha);
+ tp[1] = (get(op + 1) / value_divisor) * alpha + tp[1] * (1 - alpha);
+ tp[2] = (get(op + red) / value_divisor) * alpha + tp[2] * (1 - alpha);
+ tp[3] = (get(op + 3) / value_divisor) * alpha + tp[3] * (1 - alpha);
+
+ tp += target.bpp;
+ op += other.bpp / sizeof(OtherType);
+ }
+ }
+}
+
+
+template <class OtherType>
+void
+alpha_blend_onto_rgba(TargetParams const& target, OtherParams const& other, int red, int blue, std::function<float (OtherType*)> get, int value_divisor)
+{
+ auto const alpha_divisor = other.alpha_divisor();
+ for (int ty = target.start_y, oy = other.start_y; ty < target.size.height && oy < other.size.height; ++ty, ++oy) {
+ auto tp = target.line_pointer(ty);
+ auto op = reinterpret_cast<OtherType*>(other.line_pointer(oy));
+ for (int tx = target.start_x, ox = other.start_x; tx < target.size.width && ox < other.size.width; ++tx, ++ox) {
+ float const alpha = get(op + 3) / alpha_divisor;
+ tp[0] = (get(op + red) / value_divisor) * alpha + tp[0] * (1 - alpha);
+ tp[1] = (get(op + 1) / value_divisor) * alpha + tp[1] * (1 - alpha);
+ tp[2] = (get(op + blue) / value_divisor) * alpha + tp[2] * (1 - alpha);
+ tp[3] = (get(op + 3) / value_divisor) * alpha + tp[3] * (1 - alpha);
+
+ tp += target.bpp;
+ op += other.bpp / sizeof(OtherType);
+ }
+ }
+}
+
+
+template <class OtherType>
+void
+alpha_blend_onto_rgb48le(TargetParams const& target, OtherParams const& other, int red, int blue, std::function<float (OtherType*)> get, int value_scale)
+{
+ auto const alpha_divisor = other.alpha_divisor();
+ for (int ty = target.start_y, oy = other.start_y; ty < target.size.height && oy < other.size.height; ++ty, ++oy) {
+ auto tp = reinterpret_cast<uint16_t*>(target.line_pointer(ty));
+ auto op = reinterpret_cast<OtherType*>(other.line_pointer(oy));
+ for (int tx = target.start_x, ox = other.start_x; tx < target.size.width && ox < other.size.width; ++tx, ++ox) {
+ float const alpha = get(op + 3) / alpha_divisor;
+ tp[0] = get(op + red) * value_scale * alpha + tp[0] * (1 - alpha);
+ tp[1] = get(op + 1) * value_scale * alpha + tp[1] * (1 - alpha);
+ tp[2] = get(op + blue) * value_scale * alpha + tp[2] * (1 - alpha);
+
+ tp += target.bpp / 2;
+ op += other.bpp / sizeof(OtherType);
+ }
+ }
+}
+
+
+template <class OtherType>
+void
+alpha_blend_onto_xyz12le(TargetParams const& target, OtherParams const& other, int red, int blue, std::function<float (OtherType*)> get, int value_divisor)
{
- int this_bpp = 0;
- int other_bpp = 0;
+ auto const alpha_divisor = other.alpha_divisor();
+ auto conv = dcp::ColourConversion::srgb_to_xyz();
+ double fast_matrix[9];
+ dcp::combined_rgb_to_xyz(conv, fast_matrix);
+ auto lut_in = conv.in()->double_lut(0, 1, 8, false);
+ auto lut_out = conv.out()->int_lut(0, 1, 16, true, 65535);
+ for (int ty = target.start_y, oy = other.start_y; ty < target.size.height && oy < other.size.height; ++ty, ++oy) {
+ auto tp = reinterpret_cast<uint16_t*>(target.data[0] + ty * target.stride[0] + target.start_x * target.bpp);
+ auto op = reinterpret_cast<OtherType*>(other.data[0] + oy * other.stride[0]);
+ for (int tx = target.start_x, ox = other.start_x; tx < target.size.width && ox < other.size.width; ++tx, ++ox) {
+ float const alpha = get(op + 3) / alpha_divisor;
+
+ /* Convert sRGB to XYZ; op is BGRA. First, input gamma LUT */
+ double const r = lut_in[get(op + red) / value_divisor];
+ double const g = lut_in[get(op + 1) / value_divisor];
+ double const b = lut_in[get(op + blue) / value_divisor];
+
+ /* RGB to XYZ, including Bradford transform and DCI companding */
+ double const x = max(0.0, min(1.0, r * fast_matrix[0] + g * fast_matrix[1] + b * fast_matrix[2]));
+ double const y = max(0.0, min(1.0, r * fast_matrix[3] + g * fast_matrix[4] + b * fast_matrix[5]));
+ double const z = max(0.0, min(1.0, r * fast_matrix[6] + g * fast_matrix[7] + b * fast_matrix[8]));
+
+ /* Out gamma LUT and blend */
+ tp[0] = lut_out[lrint(x * 65535)] * alpha + tp[0] * (1 - alpha);
+ tp[1] = lut_out[lrint(y * 65535)] * alpha + tp[1] * (1 - alpha);
+ tp[2] = lut_out[lrint(z * 65535)] * alpha + tp[2] * (1 - alpha);
+
+ tp += target.bpp / 2;
+ op += other.bpp / sizeof(OtherType);
+ }
+ }
+}
+
+
+static
+void
+alpha_blend_onto_yuv420p(TargetParams const& target, OtherParams const& other, uint8_t* const* alpha_data, int const* alpha_stride)
+{
+ auto const ts = target.size;
+ auto const os = other.size;
+ for (int ty = target.start_y, oy = other.start_y; ty < ts.height && oy < os.height; ++ty, ++oy) {
+ int const hty = ty / 2;
+ int const hoy = oy / 2;
+ uint8_t* tY = target.data[0] + (ty * target.stride[0]) + target.start_x;
+ uint8_t* tU = target.data[1] + (hty * target.stride[1]) + target.start_x / 2;
+ uint8_t* tV = target.data[2] + (hty * target.stride[2]) + target.start_x / 2;
+ uint8_t* oY = other.data[0] + (oy * other.stride[0]) + other.start_x;
+ uint8_t* oU = other.data[1] + (hoy * other.stride[1]) + other.start_x / 2;
+ uint8_t* oV = other.data[2] + (hoy * other.stride[2]) + other.start_x / 2;
+ uint8_t* alpha = alpha_data[0] + (oy * alpha_stride[0]) + other.start_x * 4;
+ for (int tx = target.start_x, ox = other.start_x; tx < ts.width && ox < os.width; ++tx, ++ox) {
+ float const a = float(alpha[3]) / 255;
+ *tY = *oY * a + *tY * (1 - a);
+ *tU = *oU * a + *tU * (1 - a);
+ *tV = *oV * a + *tV * (1 - a);
+ ++tY;
+ ++oY;
+ if (tx % 2) {
+ ++tU;
+ ++tV;
+ }
+ if (ox % 2) {
+ ++oU;
+ ++oV;
+ }
+ alpha += 4;
+ }
+ }
+}
- if (_pixel_format == PIX_FMT_BGRA && other->pixel_format() == PIX_FMT_RGBA) {
- this_bpp = 4;
- other_bpp = 4;
- } else if (_pixel_format == PIX_FMT_RGB24 && other->pixel_format() == PIX_FMT_RGBA) {
- this_bpp = 3;
- other_bpp = 4;
- } else {
- assert (false);
+
+static
+void
+alpha_blend_onto_yuv420p10(TargetParams const& target, OtherParams const& other, uint8_t* const* alpha_data, int const* alpha_stride)
+{
+ auto const ts = target.size;
+ auto const os = other.size;
+ for (int ty = target.start_y, oy = other.start_y; ty < ts.height && oy < os.height; ++ty, ++oy) {
+ int const hty = ty / 2;
+ int const hoy = oy / 2;
+ uint16_t* tY = reinterpret_cast<uint16_t*>(target.data[0] + (ty * target.stride[0])) + target.start_x;
+ uint16_t* tU = reinterpret_cast<uint16_t*>(target.data[1] + (hty * target.stride[1])) + target.start_x / 2;
+ uint16_t* tV = reinterpret_cast<uint16_t*>(target.data[2] + (hty * target.stride[2])) + target.start_x / 2;
+ uint16_t* oY = reinterpret_cast<uint16_t*>(other.data[0] + (oy * other.stride[0])) + other.start_x;
+ uint16_t* oU = reinterpret_cast<uint16_t*>(other.data[1] + (hoy * other.stride[1])) + other.start_x / 2;
+ uint16_t* oV = reinterpret_cast<uint16_t*>(other.data[2] + (hoy * other.stride[2])) + other.start_x / 2;
+ uint8_t* alpha = alpha_data[0] + (oy * alpha_stride[0]) + other.start_x * 4;
+ for (int tx = target.start_x, ox = other.start_x; tx < ts.width && ox < os.width; ++tx, ++ox) {
+ float const a = float(alpha[3]) / 255;
+ *tY = *oY * a + *tY * (1 - a);
+ *tU = *oU * a + *tU * (1 - a);
+ *tV = *oV * a + *tV * (1 - a);
+ ++tY;
+ ++oY;
+ if (tx % 2) {
+ ++tU;
+ ++tV;
+ }
+ if (ox % 2) {
+ ++oU;
+ ++oV;
+ }
+ alpha += 4;
+ }
+ }
+}
+
+
+static
+void
+alpha_blend_onto_yuv422p9or10le(TargetParams const& target, OtherParams const& other, uint8_t* const* alpha_data, int const* alpha_stride)
+{
+ auto const ts = target.size;
+ auto const os = other.size;
+ for (int ty = target.start_y, oy = other.start_y; ty < ts.height && oy < os.height; ++ty, ++oy) {
+ uint16_t* tY = reinterpret_cast<uint16_t*>(target.data[0] + (ty * target.stride[0])) + target.start_x;
+ uint16_t* tU = reinterpret_cast<uint16_t*>(target.data[1] + (ty * target.stride[1])) + target.start_x / 2;
+ uint16_t* tV = reinterpret_cast<uint16_t*>(target.data[2] + (ty * target.stride[2])) + target.start_x / 2;
+ uint16_t* oY = reinterpret_cast<uint16_t*>(other.data[0] + (oy * other.stride[0])) + other.start_x;
+ uint16_t* oU = reinterpret_cast<uint16_t*>(other.data[1] + (oy * other.stride[1])) + other.start_x / 2;
+ uint16_t* oV = reinterpret_cast<uint16_t*>(other.data[2] + (oy * other.stride[2])) + other.start_x / 2;
+ uint8_t* alpha = alpha_data[0] + (oy * alpha_stride[0]) + other.start_x * 4;
+ for (int tx = target.start_x, ox = other.start_x; tx < ts.width && ox < os.width; ++tx, ++ox) {
+ float const a = float(alpha[3]) / 255;
+ *tY = *oY * a + *tY * (1 - a);
+ *tU = *oU * a + *tU * (1 - a);
+ *tV = *oV * a + *tV * (1 - a);
+ ++tY;
+ ++oY;
+ if (tx % 2) {
+ ++tU;
+ ++tV;
+ }
+ if (ox % 2) {
+ ++oU;
+ ++oV;
+ }
+ alpha += 4;
+ }
}
+}
+
+
+void
+Image::alpha_blend (shared_ptr<const Image> other, Position<int> position)
+{
+ DCPOMATIC_ASSERT(
+ other->pixel_format() == AV_PIX_FMT_BGRA ||
+ other->pixel_format() == AV_PIX_FMT_RGBA ||
+ other->pixel_format() == AV_PIX_FMT_RGBA64BE
+ );
+
+ int const blue = other->pixel_format() == AV_PIX_FMT_BGRA ? 0 : 2;
+ int const red = other->pixel_format() == AV_PIX_FMT_BGRA ? 2 : 0;
int start_tx = position.x;
int start_ox = 0;
start_ty = 0;
}
- 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] + position.x * 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] = (tp[0] * (1 - alpha)) + op[0] * alpha;
- tp[1] = (tp[1] * (1 - alpha)) + op[1] * alpha;
- tp[2] = (tp[2] * (1 - alpha)) + op[2] * alpha;
- tp += this_bpp;
- op += other_bpp;
+ TargetParams target_params = {
+ start_tx,
+ start_ty,
+ size(),
+ data(),
+ stride(),
+ 0
+ };
+
+ OtherParams other_params = {
+ start_ox,
+ start_oy,
+ other->size(),
+ other->data(),
+ other->stride(),
+ other->pixel_format() == AV_PIX_FMT_RGBA64BE ? 8 : 4
+ };
+
+ auto byteswap = [](uint16_t* p) {
+ return (*p >> 8) | ((*p & 0xff) << 8);
+ };
+
+ auto pass = [](uint8_t* p) {
+ return *p;
+ };
+
+ switch (_pixel_format) {
+ case AV_PIX_FMT_RGB24:
+ target_params.bpp = 3;
+ if (other->pixel_format() == AV_PIX_FMT_RGBA64BE) {
+ alpha_blend_onto_rgb24<uint16_t>(target_params, other_params, red, blue, byteswap, 256);
+ } else {
+ alpha_blend_onto_rgb24<uint8_t>(target_params, other_params, red, blue, pass, 1);
+ }
+ break;
+ case AV_PIX_FMT_BGRA:
+ target_params.bpp = 4;
+ if (other->pixel_format() == AV_PIX_FMT_RGBA64BE) {
+ alpha_blend_onto_bgra<uint16_t>(target_params, other_params, red, blue, byteswap, 256);
+ } else {
+ alpha_blend_onto_bgra<uint8_t>(target_params, other_params, red, blue, pass, 1);
+ }
+ break;
+ case AV_PIX_FMT_RGBA:
+ target_params.bpp = 4;
+ if (other->pixel_format() == AV_PIX_FMT_RGBA64BE) {
+ alpha_blend_onto_rgba<uint16_t>(target_params, other_params, red, blue, byteswap, 256);
+ } else {
+ alpha_blend_onto_rgba<uint8_t>(target_params, other_params, red, blue, pass, 1);
}
+ break;
+ case AV_PIX_FMT_RGB48LE:
+ target_params.bpp = 6;
+ if (other->pixel_format() == AV_PIX_FMT_RGBA64BE) {
+ alpha_blend_onto_rgb48le<uint16_t>(target_params, other_params, red, blue, byteswap, 1);
+ } else {
+ alpha_blend_onto_rgb48le<uint8_t>(target_params, other_params, red, blue, pass, 256);
+ }
+ break;
+ case AV_PIX_FMT_XYZ12LE:
+ target_params.bpp = 6;
+ if (other->pixel_format() == AV_PIX_FMT_RGBA64BE) {
+ alpha_blend_onto_xyz12le<uint16_t>(target_params, other_params, red, blue, byteswap, 256);
+ } else {
+ alpha_blend_onto_xyz12le<uint8_t>(target_params, other_params, red, blue, pass, 1);
+ }
+ break;
+ case AV_PIX_FMT_YUV420P:
+ {
+ auto yuv = other->convert_pixel_format (dcp::YUVToRGB::REC709, _pixel_format, Alignment::COMPACT, false);
+ other_params.data = yuv->data();
+ other_params.stride = yuv->stride();
+ alpha_blend_onto_yuv420p(target_params, other_params, other->data(), other->stride());
+ break;
+ }
+ case AV_PIX_FMT_YUV420P10:
+ {
+ auto yuv = other->convert_pixel_format (dcp::YUVToRGB::REC709, _pixel_format, Alignment::COMPACT, false);
+ other_params.data = yuv->data();
+ other_params.stride = yuv->stride();
+ alpha_blend_onto_yuv420p10(target_params, other_params, other->data(), other->stride());
+ break;
+ }
+ case AV_PIX_FMT_YUV422P9LE:
+ case AV_PIX_FMT_YUV422P10LE:
+ {
+ auto yuv = other->convert_pixel_format (dcp::YUVToRGB::REC709, _pixel_format, Alignment::COMPACT, false);
+ other_params.data = yuv->data();
+ other_params.stride = yuv->stride();
+ alpha_blend_onto_yuv422p9or10le(target_params, other_params, other->data(), other->stride());
+ break;
+ }
+ default:
+ throw PixelFormatError ("alpha_blend()", _pixel_format);
}
}
+
void
Image::copy (shared_ptr<const Image> other, Position<int> position)
{
/* Only implemented for RGB24 onto RGB24 so far */
- assert (_pixel_format == PIX_FMT_RGB24 && other->pixel_format() == PIX_FMT_RGB24);
- assert (position.x >= 0 && position.y >= 0);
+ DCPOMATIC_ASSERT (_pixel_format == AV_PIX_FMT_RGB24 && other->pixel_format() == AV_PIX_FMT_RGB24);
+ DCPOMATIC_ASSERT (position.x >= 0 && position.y >= 0);
int const N = min (position.x + other->size().width, size().width) - position.x;
for (int ty = position.y, oy = 0; ty < size().height && oy < other->size().height; ++ty, ++oy) {
uint8_t * const op = other->data()[0] + oy * other->stride()[0];
memcpy (tp, op, N * 3);
}
-}
+}
+
void
Image::read_from_socket (shared_ptr<Socket> socket)
{
- for (int i = 0; i < components(); ++i) {
+ for (int i = 0; i < planes(); ++i) {
uint8_t* p = data()[i];
- for (int y = 0; y < lines(i); ++y) {
+ int const lines = sample_size(i).height;
+ for (int y = 0; y < lines; ++y) {
socket->read (p, line_size()[i]);
p += stride()[i];
}
}
}
+
void
Image::write_to_socket (shared_ptr<Socket> socket) const
{
- for (int i = 0; i < components(); ++i) {
+ for (int i = 0; i < planes(); ++i) {
uint8_t* p = data()[i];
- for (int y = 0; y < lines(i); ++y) {
+ int const lines = sample_size(i).height;
+ for (int y = 0; y < lines; ++y) {
socket->write (p, line_size()[i]);
p += stride()[i];
}
float
Image::bytes_per_pixel (int c) const
{
- AVPixFmtDescriptor const * d = av_pix_fmt_desc_get(_pixel_format);
+ auto d = av_pix_fmt_desc_get(_pixel_format);
if (!d) {
- throw PixelFormatError ("lines()", _pixel_format);
+ throw PixelFormatError ("bytes_per_pixel()", _pixel_format);
}
- if (c >= components()) {
+ if (c >= planes()) {
return 0;
}
float bpp[4] = { 0, 0, 0, 0 };
- bpp[0] = floor ((d->comp[0].depth_minus1 + 1 + 7) / 8);
+#ifdef DCPOMATIC_HAVE_AVCOMPONENTDESCRIPTOR_DEPTH_MINUS1
+ bpp[0] = floor ((d->comp[0].depth_minus1 + 8) / 8);
if (d->nb_components > 1) {
- bpp[1] = floor ((d->comp[1].depth_minus1 + 1 + 7) / 8) / pow (2.0f, d->log2_chroma_w);
+ bpp[1] = floor ((d->comp[1].depth_minus1 + 8) / 8) / pow (2.0f, d->log2_chroma_w);
}
if (d->nb_components > 2) {
- bpp[2] = floor ((d->comp[2].depth_minus1 + 1 + 7) / 8) / pow (2.0f, d->log2_chroma_w);
+ bpp[2] = floor ((d->comp[2].depth_minus1 + 8) / 8) / pow (2.0f, d->log2_chroma_w);
}
if (d->nb_components > 3) {
- bpp[3] = floor ((d->comp[3].depth_minus1 + 1 + 7) / 8) / pow (2.0f, d->log2_chroma_w);
+ bpp[3] = floor ((d->comp[3].depth_minus1 + 8) / 8) / pow (2.0f, d->log2_chroma_w);
+ }
+#else
+ bpp[0] = floor ((d->comp[0].depth + 7) / 8);
+ if (d->nb_components > 1) {
+ bpp[1] = floor ((d->comp[1].depth + 7) / 8) / pow (2.0f, d->log2_chroma_w);
+ }
+ if (d->nb_components > 2) {
+ bpp[2] = floor ((d->comp[2].depth + 7) / 8) / pow (2.0f, d->log2_chroma_w);
}
-
- if ((d->flags & PIX_FMT_PLANAR) == 0) {
+ if (d->nb_components > 3) {
+ bpp[3] = floor ((d->comp[3].depth + 7) / 8) / pow (2.0f, d->log2_chroma_w);
+ }
+#endif
+
+ if ((d->flags & AV_PIX_FMT_FLAG_PLANAR) == 0) {
/* Not planar; sum them up */
return bpp[0] + bpp[1] + bpp[2] + bpp[3];
}
return bpp[c];
}
+
/** Construct a Image of a given size and format, allocating memory
* as required.
*
* @param p Pixel format.
* @param s Size in pixels.
+ * @param alignment PADDED to make each row of this image aligned to a ALIGNMENT-byte boundary, otherwise COMPACT.
*/
-Image::Image (AVPixelFormat p, dcp::Size s, bool aligned)
- : dcp::Image (s)
+Image::Image (AVPixelFormat p, dcp::Size s, Alignment alignment)
+ : _size (s)
, _pixel_format (p)
- , _aligned (aligned)
+ , _alignment (alignment)
{
allocate ();
}
+
void
Image::allocate ()
{
_data = (uint8_t **) wrapped_av_malloc (4 * sizeof (uint8_t *));
_data[0] = _data[1] = _data[2] = _data[3] = 0;
-
+
_line_size = (int *) wrapped_av_malloc (4 * sizeof (int));
_line_size[0] = _line_size[1] = _line_size[2] = _line_size[3] = 0;
-
+
_stride = (int *) wrapped_av_malloc (4 * sizeof (int));
_stride[0] = _stride[1] = _stride[2] = _stride[3] = 0;
- for (int i = 0; i < components(); ++i) {
+ auto stride_round_up = [](int stride, int t) {
+ int const a = stride + (t - 1);
+ return a - (a % t);
+ };
+
+ for (int i = 0; i < planes(); ++i) {
_line_size[i] = ceil (_size.width * bytes_per_pixel(i));
- _stride[i] = stride_round_up (i, _line_size, _aligned ? 32 : 1);
+ _stride[i] = stride_round_up (_line_size[i], _alignment == Alignment::PADDED ? ALIGNMENT : 1);
/* The assembler function ff_rgb24ToY_avx (in libswscale/x86/input.asm)
uses a 16-byte fetch to read three bytes (R/G/B) of image data.
OS X crashes on this illegal read, though other operating systems don't
seem to mind. The nasty + 1 in this malloc makes sure there is always a byte
for that instruction to read safely.
+
+ Further to the above, valgrind is now telling me that ff_rgb24ToY_ssse3
+ over-reads by more then _avx. I can't follow the code to work out how much,
+ so I'll just over-allocate by ALIGNMENT bytes and have done with it. Empirical
+ testing suggests that it works.
+
+ In addition to these concerns, we may read/write as much as a whole extra line
+ at the end of each plane in cases where we are messing with offsets in order to
+ do pad or crop. To solve this we over-allocate by an extra _stride[i] bytes.
+
+ As an example: we may write to images starting at an offset so we get some padding.
+ Hence we want to write in the following pattern:
+
+ block start write start line end
+ |..(padding)..|<------line-size------------->|..(padding)..|
+ |..(padding)..|<------line-size------------->|..(padding)..|
+ |..(padding)..|<------line-size------------->|..(padding)..|
+
+ where line-size is of the smaller (inter_size) image and the full padded line length is that of
+ out_size. To get things to work we have to tell FFmpeg that the stride is that of out_size.
+ However some parts of FFmpeg (notably rgb48Toxyz12 in swscale.c) process data for the full
+ specified *stride*. This does not matter until we get to the last line:
+
+ block start write start line end
+ |..(padding)..|<------line-size------------->|XXXwrittenXXX|
+ |XXXwrittenXXX|<------line-size------------->|XXXwrittenXXX|
+ |XXXwrittenXXX|<------line-size------------->|XXXwrittenXXXXXXwrittenXXX
+ ^^^^ out of bounds
+ */
+ _data[i] = (uint8_t *) wrapped_av_malloc (_stride[i] * (sample_size(i).height + 1) + ALIGNMENT);
+#if HAVE_VALGRIND_MEMCHECK_H
+ /* The data between the end of the line size and the stride is undefined but processed by
+ libswscale, causing lots of valgrind errors. Mark it all defined to quell these errors.
*/
- _data[i] = (uint8_t *) wrapped_av_malloc (_stride[i] * lines (i) + 1);
+ VALGRIND_MAKE_MEM_DEFINED (_data[i], _stride[i] * (sample_size(i).height + 1) + ALIGNMENT);
+#endif
}
}
+
Image::Image (Image const & other)
- : dcp::Image (other)
- , _pixel_format (other._pixel_format)
- , _aligned (other._aligned)
+ : std::enable_shared_from_this<Image>(other)
+ , _size (other._size)
+ , _pixel_format (other._pixel_format)
+ , _alignment (other._alignment)
{
allocate ();
- for (int i = 0; i < components(); ++i) {
+ for (int i = 0; i < planes(); ++i) {
uint8_t* p = _data[i];
uint8_t* q = other._data[i];
- for (int j = 0; j < lines(i); ++j) {
+ int const lines = sample_size(i).height;
+ for (int j = 0; j < lines; ++j) {
memcpy (p, q, _line_size[i]);
p += stride()[i];
q += other.stride()[i];
}
}
-Image::Image (AVFrame* frame)
- : dcp::Image (dcp::Size (frame->width, frame->height))
- , _pixel_format (static_cast<AVPixelFormat> (frame->format))
- , _aligned (true)
+
+Image::Image (AVFrame const * frame, Alignment alignment)
+ : _size (frame->width, frame->height)
+ , _pixel_format (static_cast<AVPixelFormat>(frame->format))
+ , _alignment (alignment)
{
+ DCPOMATIC_ASSERT (_pixel_format != AV_PIX_FMT_NONE);
+
allocate ();
- for (int i = 0; i < components(); ++i) {
+ for (int i = 0; i < planes(); ++i) {
uint8_t* p = _data[i];
uint8_t* q = frame->data[i];
- for (int j = 0; j < lines(i); ++j) {
+ int const lines = sample_size(i).height;
+ for (int j = 0; j < lines; ++j) {
memcpy (p, q, _line_size[i]);
p += stride()[i];
/* AVFrame's linesize is what we call `stride' */
}
}
-Image::Image (shared_ptr<const Image> other, bool aligned)
- : dcp::Image (other)
+
+Image::Image (shared_ptr<const Image> other, Alignment alignment)
+ : _size (other->_size)
, _pixel_format (other->_pixel_format)
- , _aligned (aligned)
+ , _alignment (alignment)
{
allocate ();
- for (int i = 0; i < components(); ++i) {
- assert(line_size()[i] == other->line_size()[i]);
+ for (int i = 0; i < planes(); ++i) {
+ DCPOMATIC_ASSERT (line_size()[i] == other->line_size()[i]);
uint8_t* p = _data[i];
uint8_t* q = other->data()[i];
- for (int j = 0; j < lines(i); ++j) {
+ int const lines = sample_size(i).height;
+ for (int j = 0; j < lines; ++j) {
memcpy (p, q, line_size()[i]);
p += stride()[i];
q += other->stride()[i];
}
}
+
Image&
Image::operator= (Image const & other)
{
return *this;
}
+
void
Image::swap (Image & other)
{
- dcp::Image::swap (other);
-
+ std::swap (_size, other._size);
std::swap (_pixel_format, other._pixel_format);
for (int i = 0; i < 4; ++i) {
std::swap (_stride[i], other._stride[i]);
}
- std::swap (_aligned, other._aligned);
+ std::swap (_alignment, other._alignment);
}
-/** Destroy a Image */
+
Image::~Image ()
{
- for (int i = 0; i < components(); ++i) {
+ for (int i = 0; i < planes(); ++i) {
av_free (_data[i]);
}
av_free (_stride);
}
-uint8_t **
+
+uint8_t * const *
Image::data () const
{
return _data;
}
-int *
+
+int const *
Image::line_size () const
{
return _line_size;
}
-int *
+
+int const *
Image::stride () const
{
return _stride;
}
+
dcp::Size
Image::size () const
{
return _size;
}
-bool
-Image::aligned () const
+
+Image::Alignment
+Image::alignment () const
{
- return _aligned;
+ return _alignment;
}
+
PositionImage
-merge (list<PositionImage> images)
+merge (list<PositionImage> images, Image::Alignment alignment)
{
if (images.empty ()) {
- return PositionImage ();
+ return {};
+ }
+
+ if (images.size() == 1) {
+ images.front().image = Image::ensure_alignment(images.front().image, alignment);
+ return images.front();
}
dcpomatic::Rect<int> all (images.front().position, images.front().image->size().width, images.front().image->size().height);
- for (list<PositionImage>::const_iterator i = images.begin(); i != images.end(); ++i) {
- all.extend (dcpomatic::Rect<int> (i->position, i->image->size().width, i->image->size().height));
+ for (auto const& i: images) {
+ all.extend (dcpomatic::Rect<int>(i.position, i.image->size().width, i.image->size().height));
}
- shared_ptr<Image> merged (new Image (images.front().image->pixel_format (), dcp::Size (all.width, all.height), true));
+ auto merged = make_shared<Image>(images.front().image->pixel_format(), dcp::Size(all.width, all.height), alignment);
merged->make_transparent ();
- for (list<PositionImage>::const_iterator i = images.begin(); i != images.end(); ++i) {
- merged->alpha_blend (i->image, i->position);
+ for (auto const& i: images) {
+ merged->alpha_blend (i.image, i.position - all.position());
}
return PositionImage (merged, all.position ());
}
+
+
+bool
+operator== (Image const & a, Image const & b)
+{
+ if (a.planes() != b.planes() || a.pixel_format() != b.pixel_format() || a.alignment() != b.alignment()) {
+ return false;
+ }
+
+ for (int c = 0; c < a.planes(); ++c) {
+ 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]) {
+ return false;
+ }
+
+ uint8_t* p = a.data()[c];
+ uint8_t* q = b.data()[c];
+ int const lines = a.sample_size(c).height;
+ for (int y = 0; y < lines; ++y) {
+ if (memcmp (p, q, a.line_size()[c]) != 0) {
+ return false;
+ }
+
+ p += a.stride()[c];
+ q += b.stride()[c];
+ }
+ }
+
+ return true;
+}
+
+
+/** Fade the image.
+ * @param f Amount to fade by; 0 is black, 1 is no fade.
+ */
+void
+Image::fade (float f)
+{
+ /* U/V black value for 8-bit colour */
+ static int const eight_bit_uv = (1 << 7) - 1;
+ /* U/V black value for 10-bit colour */
+ static uint16_t const ten_bit_uv = (1 << 9) - 1;
+
+ switch (_pixel_format) {
+ case AV_PIX_FMT_YUV420P:
+ {
+ /* Y */
+ uint8_t* p = data()[0];
+ int const lines = sample_size(0).height;
+ for (int y = 0; y < lines; ++y) {
+ uint8_t* q = p;
+ for (int x = 0; x < line_size()[0]; ++x) {
+ *q = int(float(*q) * f);
+ ++q;
+ }
+ p += stride()[0];
+ }
+
+ /* U, V */
+ for (int c = 1; c < 3; ++c) {
+ uint8_t* p = data()[c];
+ int const lines = sample_size(c).height;
+ for (int y = 0; y < lines; ++y) {
+ uint8_t* q = p;
+ for (int x = 0; x < line_size()[c]; ++x) {
+ *q = eight_bit_uv + int((int(*q) - eight_bit_uv) * f);
+ ++q;
+ }
+ p += stride()[c];
+ }
+ }
+
+ break;
+ }
+
+ case AV_PIX_FMT_RGB24:
+ {
+ /* 8-bit */
+ uint8_t* p = data()[0];
+ int const lines = sample_size(0).height;
+ for (int y = 0; y < lines; ++y) {
+ uint8_t* q = p;
+ for (int x = 0; x < line_size()[0]; ++x) {
+ *q = int (float (*q) * f);
+ ++q;
+ }
+ p += stride()[0];
+ }
+ break;
+ }
+
+ case AV_PIX_FMT_XYZ12LE:
+ case AV_PIX_FMT_RGB48LE:
+ /* 16-bit little-endian */
+ for (int c = 0; c < 3; ++c) {
+ int const stride_pixels = stride()[c] / 2;
+ int const line_size_pixels = line_size()[c] / 2;
+ uint16_t* p = reinterpret_cast<uint16_t*> (data()[c]);
+ int const lines = sample_size(c).height;
+ for (int y = 0; y < lines; ++y) {
+ uint16_t* q = p;
+ for (int x = 0; x < line_size_pixels; ++x) {
+ *q = int (float (*q) * f);
+ ++q;
+ }
+ p += stride_pixels;
+ }
+ }
+ break;
+
+ case AV_PIX_FMT_YUV422P10LE:
+ {
+ /* Y */
+ {
+ int const stride_pixels = stride()[0] / 2;
+ int const line_size_pixels = line_size()[0] / 2;
+ uint16_t* p = reinterpret_cast<uint16_t*> (data()[0]);
+ int const lines = sample_size(0).height;
+ for (int y = 0; y < lines; ++y) {
+ uint16_t* q = p;
+ for (int x = 0; x < line_size_pixels; ++x) {
+ *q = int(float(*q) * f);
+ ++q;
+ }
+ p += stride_pixels;
+ }
+ }
+
+ /* U, V */
+ for (int c = 1; c < 3; ++c) {
+ int const stride_pixels = stride()[c] / 2;
+ int const line_size_pixels = line_size()[c] / 2;
+ uint16_t* p = reinterpret_cast<uint16_t*> (data()[c]);
+ int const lines = sample_size(c).height;
+ for (int y = 0; y < lines; ++y) {
+ uint16_t* q = p;
+ for (int x = 0; x < line_size_pixels; ++x) {
+ *q = ten_bit_uv + int((int(*q) - ten_bit_uv) * f);
+ ++q;
+ }
+ p += stride_pixels;
+ }
+ }
+ break;
+
+ }
+
+ default:
+ throw PixelFormatError ("fade()", _pixel_format);
+ }
+}
+
+
+shared_ptr<const Image>
+Image::ensure_alignment (shared_ptr<const Image> image, Image::Alignment alignment)
+{
+ if (image->alignment() == alignment) {
+ return image;
+ }
+
+ return make_shared<Image>(image, alignment);
+}
+
+
+size_t
+Image::memory_used () const
+{
+ size_t m = 0;
+ for (int i = 0; i < planes(); ++i) {
+ m += _stride[i] * sample_size(i).height;
+ }
+ return m;
+}
+
+
+void
+Image::video_range_to_full_range ()
+{
+ switch (_pixel_format) {
+ case AV_PIX_FMT_RGB24:
+ {
+ float const factor = 256.0 / 219.0;
+ uint8_t* p = data()[0];
+ int const lines = sample_size(0).height;
+ for (int y = 0; y < lines; ++y) {
+ uint8_t* q = p;
+ for (int x = 0; x < line_size()[0]; ++x) {
+ *q = clamp(lrintf((*q - 16) * factor), 0L, 255L);
+ ++q;
+ }
+ p += stride()[0];
+ }
+ break;
+ }
+ case AV_PIX_FMT_RGB48LE:
+ {
+ float const factor = 65536.0 / 56064.0;
+ uint16_t* p = reinterpret_cast<uint16_t*>(data()[0]);
+ int const lines = sample_size(0).height;
+ for (int y = 0; y < lines; ++y) {
+ uint16_t* q = p;
+ int const line_size_pixels = line_size()[0] / 2;
+ for (int x = 0; x < line_size_pixels; ++x) {
+ *q = clamp(lrintf((*q - 4096) * factor), 0L, 65535L);
+ ++q;
+ }
+ p += stride()[0] / 2;
+ }
+ break;
+ }
+ case AV_PIX_FMT_GBRP12LE:
+ {
+ float const factor = 4096.0 / 3504.0;
+ for (int c = 0; c < 3; ++c) {
+ uint16_t* p = reinterpret_cast<uint16_t*>(data()[c]);
+ int const lines = sample_size(c).height;
+ for (int y = 0; y < lines; ++y) {
+ uint16_t* q = p;
+ int const line_size_pixels = line_size()[c] / 2;
+ for (int x = 0; x < line_size_pixels; ++x) {
+ *q = clamp(lrintf((*q - 256) * factor), 0L, 4095L);
+ ++q;
+ }
+ }
+ }
+ break;
+ }
+ default:
+ throw PixelFormatError ("video_range_to_full_range()", _pixel_format);
+ }
+}
+