/*
- Copyright (C) 2012-2016 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2012-2021 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
*/
+
/** @file src/image.cc
* @brief A class to describe a video image.
*/
-#include "image.h"
+
+#include "compose.hpp"
+#include "dcpomatic_socket.h"
#include "exceptions.h"
-#include "timer.h"
+#include "image.h"
#include "rect.h"
+#include "timer.h"
#include "util.h"
-#include "compose.hpp"
-#include "dcpomatic_socket.h"
+#include "warnings.h"
#include <dcp/rgb_xyz.h>
#include <dcp/transfer_function.h>
+DCPOMATIC_DISABLE_WARNINGS
extern "C" {
-#include <libswscale/swscale.h>
-#include <libavutil/pixfmt.h>
-#include <libavutil/pixdesc.h>
#include <libavutil/frame.h>
+#include <libavutil/pixdesc.h>
+#include <libavutil/pixfmt.h>
+#include <libswscale/swscale.h>
}
+DCPOMATIC_ENABLE_WARNINGS
#include <png.h>
#if HAVE_VALGRIND_MEMCHECK_H
#include <valgrind/memcheck.h>
#endif
#include <iostream>
+
#include "i18n.h"
-using std::string;
-using std::min;
-using std::max;
-using std::cout;
+
using std::cerr;
+using std::cout;
using std::list;
+using std::make_shared;
+using std::max;
+using std::min;
using std::runtime_error;
-using boost::shared_ptr;
+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::vertical_factor (int n) const
{
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 ("line_factor()", _pixel_format);
}
- return pow (2.0f, d->log2_chroma_h);
+ return lrintf(powf(2.0f, d->log2_chroma_h));
}
int
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 ("sample_size()", _pixel_format);
}
- return pow (2.0f, d->log2_chroma_w);
+ return lrintf(powf(2.0f, d->log2_chroma_w));
}
/** @param n Component index.
Image::sample_size (int n) const
{
return dcp::Size (
- lrint (ceil (static_cast<double>(size().width) / horizontal_factor (n))),
- lrint (ceil (static_cast<double>(size().height) / vertical_factor (n)))
+ lrint (ceil(static_cast<double>(size().width) / horizontal_factor(n))),
+ lrint (ceil(static_cast<double>(size().height) / vertical_factor(n)))
);
}
int
Image::planes () const
{
- AVPixFmtDescriptor const * d = av_pix_fmt_desc_get(_pixel_format);
+ auto d = av_pix_fmt_desc_get(_pixel_format);
if (!d) {
throw PixelFormatError ("planes()", _pixel_format);
}
return d->nb_components;
}
+
+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, dcp::YUVToRGB yuv_to_rgb, AVPixelFormat out_format, bool out_aligned, bool fast
+ 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
{
/* Empirical testing suggests that sws_scale() will crash if
- the input image is not aligned.
+ the input image is not padded.
*/
- DCPOMATIC_ASSERT (aligned ());
+ DCPOMATIC_ASSERT (alignment() == Alignment::PADDED);
DCPOMATIC_ASSERT (out_size.width >= inter_size.width);
DCPOMATIC_ASSERT (out_size.height >= inter_size.height);
- /* Here's an image of out_size. Below we may write to it 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)..|
+ auto out = make_shared<Image>(out_format, out_size, out_alignment);
+ out->make_black ();
- 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:
+ auto in_desc = av_pix_fmt_desc_get (_pixel_format);
+ if (!in_desc) {
+ throw PixelFormatError ("crop_scale_window()", _pixel_format);
+ }
- block start write start line end
- |..(padding)..|<------line-size------------->|XXXwrittenXXX|
- |XXXwrittenXXX|<------line-size------------->|XXXwrittenXXX|
- |XXXwrittenXXX|<------line-size------------->|XXXwrittenXXXXXXwrittenXXX
- ^^^^ out of bounds
+ /* 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)
+ );
- To get around this, we ask Image to overallocate its buffers by the overrun.
- */
+ /* 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;
+ }
- shared_ptr<Image> out (new Image (out_format, out_size, out_aligned, (out_size.width - inter_size.width) / 2));
- out->make_black ();
+ 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,
fast ? SWS_FAST_BILINEAR : SWS_BICUBIC, 0, 0, 0
throw runtime_error (N_("Could not allocate SwsContext"));
}
- DCPOMATIC_ASSERT (yuv_to_rgb < dcp::YUV_TO_RGB_COUNT);
- int const lut[dcp::YUV_TO_RGB_COUNT] = {
+ DCPOMATIC_ASSERT (yuv_to_rgb < dcp::YUVToRGB::COUNT);
+ int const lut[static_cast<int>(dcp::YUVToRGB::COUNT)] = {
SWS_CS_ITU601,
SWS_CS_ITU709
};
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).
+ 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]), 0,
- sws_getCoefficients (lut[yuv_to_rgb]), 0,
+ sws_getCoefficients (lut[static_cast<int>(yuv_to_rgb)]), video_range == VideoRange::VIDEO ? 0 : 1,
+ sws_getCoefficients (lut[static_cast<int>(yuv_to_rgb)]), out_video_range == VideoRange::VIDEO ? 0 : 1,
0, 1 << 16, 1 << 16
);
- AVPixFmtDescriptor const * in_desc = av_pix_fmt_desc_get (_pixel_format);
- if (!in_desc) {
- throw PixelFormatError ("crop_scale_window()", _pixel_format);
- }
-
/* Prepare input data pointers with crop */
uint8_t* scale_in_data[planes()];
for (int c = 0; c < planes(); ++c) {
- /* To work out the crop in bytes, start by multiplying
- the crop by the (average) bytes per pixel. Then
- round down so that we don't crop a subsampled pixel until
- we've cropped all of its Y-channel pixels.
- */
- int const x = lrintf (bytes_per_pixel(c) * crop.left) & ~ ((int) in_desc->log2_chroma_w);
- scale_in_data[c] = data()[c] + x + stride()[c] * (crop.top / vertical_factor(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));
}
- /* 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);
-
- AVPixFmtDescriptor const * out_desc = av_pix_fmt_desc_get (out_format);
+ 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 (
+ 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->planes()];
for (int c = 0; c < out->planes(); ++c) {
- /* See the note in the crop loop above */
- int const x = lrintf (out->bytes_per_pixel(c) * corner.x) & ~ ((int) out_desc->log2_chroma_w);
+ 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_freeContext (scale_context);
+ if (corrected_crop != Crop() && cropped_size == inter_size) {
+ /* We are cropping without any scaling or pixel format conversion, so FFmpeg may have left some
+ data behind in our image. Clear it out. It may get to the point where we should just stop
+ trying to be clever with cropping.
+ */
+ out->make_part_black (corner.x + cropped_size.width, out_size.width - cropped_size.width);
+ }
+
+ 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::convert_pixel_format (dcp::YUVToRGB yuv_to_rgb, AVPixelFormat out_format, bool out_aligned, bool fast) 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_aligned, fast);
+ 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_aligned true to make an aligned output image.
+ * @param out_aligment 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, bool out_aligned, bool fast) const
+Image::scale (dcp::Size out_size, dcp::YUVToRGB yuv_to_rgb, AVPixelFormat out_format, Alignment out_alignment, bool fast) const
{
/* Empirical testing suggests that sws_scale() will crash if
- the input image is not aligned.
+ the input image alignment is not PADDED.
*/
- DCPOMATIC_ASSERT (aligned ());
+ DCPOMATIC_ASSERT (alignment() == Alignment::PADDED);
- shared_ptr<Image> scaled (new Image (out_format, out_size, out_aligned));
-
- 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,
(fast ? SWS_FAST_BILINEAR : SWS_BICUBIC) | SWS_ACCURATE_RND, 0, 0, 0
);
- DCPOMATIC_ASSERT (yuv_to_rgb < dcp::YUV_TO_RGB_COUNT);
- int const lut[dcp::YUV_TO_RGB_COUNT] = {
+ DCPOMATIC_ASSERT (yuv_to_rgb < dcp::YUVToRGB::COUNT);
+ int const lut[static_cast<int>(dcp::YUVToRGB::COUNT)] = {
SWS_CS_ITU601,
SWS_CS_ITU709
};
*/
sws_setColorspaceDetails (
scale_context,
- sws_getCoefficients (lut[yuv_to_rgb]), 0,
- sws_getCoefficients (lut[yuv_to_rgb]), 0,
+ sws_getCoefficients (lut[static_cast<int>(yuv_to_rgb)]), 0,
+ sws_getCoefficients (lut[static_cast<int>(yuv_to_rgb)]), 0,
0, 1 << 16, 1 << 16
);
{
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]);
+ 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 */
}
void
-Image::make_black ()
+Image::make_part_black (int const start, int const width)
{
- /* 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;
+ 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;
+ }
+ default:
+ throw PixelFormatError ("make_part_black()", _pixel_format);
+ }
+}
+void
+Image::make_black ()
+{
switch (_pixel_format) {
case AV_PIX_FMT_YUV420P:
case AV_PIX_FMT_YUV422P:
}
case AV_PIX_FMT_XYZ12LE:
{
- dcp::ColourConversion conv = dcp::ColourConversion::srgb_to_xyz();
+ auto 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);
}
case AV_PIX_FMT_YUV420P:
{
- shared_ptr<Image> yuv = other->convert_pixel_format (dcp::YUV_TO_RGB_REC709, _pixel_format, false, false);
+ auto yuv = other->convert_pixel_format (dcp::YUVToRGB::REC709, _pixel_format, Alignment::COMPACT, false);
dcp::Size const ts = size();
dcp::Size const os = yuv->size();
for (int ty = start_ty, oy = start_oy; ty < ts.height && oy < os.height; ++ty, ++oy) {
}
case AV_PIX_FMT_YUV420P10:
{
- shared_ptr<Image> yuv = other->convert_pixel_format (dcp::YUV_TO_RGB_REC709, _pixel_format, false, false);
+ auto yuv = other->convert_pixel_format (dcp::YUVToRGB::REC709, _pixel_format, Alignment::COMPACT, false);
dcp::Size const ts = size();
dcp::Size const os = yuv->size();
for (int ty = start_ty, oy = start_oy; ty < ts.height && oy < os.height; ++ty, ++oy) {
}
case AV_PIX_FMT_YUV422P10LE:
{
- shared_ptr<Image> yuv = other->convert_pixel_format (dcp::YUV_TO_RGB_REC709, _pixel_format, false, false);
+ auto yuv = other->convert_pixel_format (dcp::YUVToRGB::REC709, _pixel_format, Alignment::COMPACT, false);
dcp::Size const ts = size();
dcp::Size const os = yuv->size();
for (int ty = start_ty, oy = start_oy; ty < ts.height && oy < os.height; ++ty, ++oy) {
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 ("bytes_per_pixel()", _pixel_format);
}
*
* @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.
+ * @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, int extra_pixels)
+Image::Image (AVPixelFormat p, dcp::Size s, Alignment alignment)
: _size (s)
, _pixel_format (p)
- , _aligned (aligned)
- , _extra_pixels (extra_pixels)
+ , _alignment (alignment)
{
allocate ();
}
+
void
Image::allocate ()
{
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 (i, _line_size, _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.
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 32 bytes and have done with it. Empirical
+ 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 + _extra_pixels * bytes_per_pixel(i) + 32);
+ _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.
*/
- VALGRIND_MAKE_MEM_DEFINED (_data[i], _stride[i] * sample_size(i).height + _extra_pixels * bytes_per_pixel(i) + 32);
+ VALGRIND_MAKE_MEM_DEFINED (_data[i], _stride[i] * (sample_size(i).height + 1) + ALIGNMENT);
#endif
}
}
Image::Image (Image const & other)
- : boost::enable_shared_from_this<Image>(other)
+ : std::enable_shared_from_this<Image>(other)
, _size (other._size)
, _pixel_format (other._pixel_format)
- , _aligned (other._aligned)
- , _extra_pixels (other._extra_pixels)
+ , _alignment (other._alignment)
{
allocate ();
}
}
-Image::Image (AVFrame* frame)
+Image::Image (AVFrame const * frame, Alignment alignment)
: _size (frame->width, frame->height)
- , _pixel_format (static_cast<AVPixelFormat> (frame->format))
- , _aligned (true)
- , _extra_pixels (0)
+ , _pixel_format (static_cast<AVPixelFormat>(frame->format))
+ , _alignment (alignment)
{
+ DCPOMATIC_ASSERT (_pixel_format != AV_PIX_FMT_NONE);
+
allocate ();
for (int i = 0; i < planes(); ++i) {
}
}
-Image::Image (shared_ptr<const Image> other, bool aligned)
+Image::Image (shared_ptr<const Image> other, Alignment alignment)
: _size (other->_size)
, _pixel_format (other->_pixel_format)
- , _aligned (aligned)
- , _extra_pixels (other->_extra_pixels)
+ , _alignment (alignment)
{
allocate ();
std::swap (_stride[i], other._stride[i]);
}
- std::swap (_aligned, other._aligned);
- std::swap (_extra_pixels, other._extra_pixels);
+ std::swap (_alignment, other._alignment);
}
-/** Destroy a Image */
Image::~Image ()
{
for (int i = 0; i < planes(); ++i) {
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) {
- return images.front ();
+ 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 - all.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.aligned() != b.aligned()) {
+ if (a.planes() != b.planes() || a.pixel_format() != b.pixel_format() || a.alignment() != b.alignment()) {
return false;
}
}
}
+
shared_ptr<const Image>
-Image::ensure_aligned (shared_ptr<const Image> image)
+Image::ensure_alignment (shared_ptr<const Image> image, Image::Alignment alignment)
{
- if (image->aligned()) {
+ if (image->alignment() == alignment) {
return image;
}
- return shared_ptr<Image> (new Image (image, true));
+ return make_shared<Image>(image, alignment);
}
+
size_t
Image::memory_used () const
{
static void
png_write_data (png_structp png_ptr, png_bytep data, png_size_t length)
{
- Memory* mem = reinterpret_cast<Memory*>(png_get_io_ptr(png_ptr));
+ auto mem = reinterpret_cast<Memory*>(png_get_io_ptr(png_ptr));
size_t size = mem->size + length;
if (mem->data) {
throw EncodeError (String::compose ("Error during PNG write: %1", message));
}
-dcp::Data
+dcp::ArrayData
Image::as_png () const
{
DCPOMATIC_ASSERT (bytes_per_pixel(0) == 4);
DCPOMATIC_ASSERT (planes() == 1);
if (pixel_format() != AV_PIX_FMT_RGBA) {
- return convert_pixel_format(dcp::YUV_TO_RGB_REC709, AV_PIX_FMT_RGBA, true, false)->as_png();
+ return convert_pixel_format(dcp::YUVToRGB::REC709, AV_PIX_FMT_RGBA, Image::Alignment::PADDED, false)->as_png();
}
/* error handling? */
png_destroy_write_struct (&png_ptr, &info_ptr);
png_free (png_ptr, row_pointers);
- return dcp::Data (state.data, state.size);
+ return dcp::ArrayData (state.data, state.size);
}
+
+
+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);
+ }
+}
+
projects / dcpomatic.git / blobdiff