/*
- Copyright (C) 2014-2016 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2014-2021 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
*/
-#include "render_text.h"
-#include "types.h"
-#include "image.h"
+
#include "cross.h"
-#include "font.h"
#include "dcpomatic_assert.h"
-#include "warnings.h"
+#include "font.h"
+#include "image.h"
+#include "render_text.h"
+#include "types.h"
#include "util.h"
+#include "warnings.h"
#include <dcp/raw_convert.h>
#include <fontconfig/fontconfig.h>
#include <cairomm/cairomm.h>
#include <pangomm.h>
DCPOMATIC_ENABLE_WARNINGS
#include <pango/pangocairo.h>
-#ifndef DCPOMATIC_HAVE_SHOW_IN_CAIRO_CONTEXT
-#include <pango/pangocairo.h>
-#endif
-#include <boost/foreach.hpp>
#include <boost/algorithm/string.hpp>
#include <iostream>
-using std::list;
+
+using std::cerr;
using std::cout;
-using std::string;
-using std::min;
+using std::list;
+using std::make_pair;
+using std::make_shared;
using std::max;
+using std::min;
using std::pair;
-using std::cerr;
-using std::make_pair;
-using boost::shared_ptr;
-using boost::optional;
-using boost::algorithm::replace_all;
+using std::shared_ptr;
+using std::string;
using namespace dcpomatic;
-static FcConfig* fc_config = 0;
-static list<pair<boost::filesystem::path, string> > fc_config_fonts;
+
+static FcConfig* fc_config = nullptr;
+static list<pair<boost::filesystem::path, string>> fc_config_fonts;
+
+
+/** Create a Pango layout using a dummy context which we can use to calculate the size
+ * of the text we will render. Then we can transfer the layout over to the real context
+ * for the actual render.
+ */
+static Glib::RefPtr<Pango::Layout>
+create_layout()
+{
+ auto c_font_map = pango_cairo_font_map_new ();
+ DCPOMATIC_ASSERT (c_font_map);
+ auto font_map = Glib::wrap (c_font_map);
+ auto c_context = pango_font_map_create_context (c_font_map);
+ DCPOMATIC_ASSERT (c_context);
+ auto context = Glib::wrap (c_context);
+ return Pango::Layout::create (context);
+}
+
+
+static void
+setup_layout (Glib::RefPtr<Pango::Layout> layout, string font_name, string markup)
+{
+ layout->set_alignment (Pango::ALIGN_LEFT);
+ Pango::FontDescription font (font_name);
+ layout->set_font_description (font);
+ layout->set_markup (markup);
+}
+
string
marked_up (list<StringText> subtitles, int target_height, float fade_factor)
{
string out;
- BOOST_FOREACH (StringText const & i, subtitles) {
+ for (auto const& i: subtitles) {
out += "<span ";
if (i.italic()) {
out += "style=\"italic\" ";
/* Between 1-65535 inclusive, apparently... */
out += "alpha=\"" + dcp::raw_convert<string>(int(floor(fade_factor * 65534)) + 1) + "\" ";
out += "color=\"#" + i.colour().to_rgb_string() + "\">";
-
- string t = i.text();
- replace_all(t, "&", "&");
- out += t;
-
+ out += i.text();
out += "</span>";
}
return out;
}
+
static void
set_source_rgba (Cairo::RefPtr<Cairo::Context> context, dcp::Colour colour, float fade_factor)
{
static shared_ptr<Image>
create_image (dcp::Size size)
{
- /* FFmpeg BGRA means first byte blue, second byte green, third byte red, fourth byte alpha */
- shared_ptr<Image> image (new Image(AV_PIX_FMT_BGRA, size, false));
+ /* FFmpeg BGRA means first byte blue, second byte green, third byte red, fourth byte alpha.
+ * This must be COMPACT as we're using it with Cairo::ImageSurface::create
+ */
+ auto image = make_shared<Image>(AV_PIX_FMT_BGRA, size, Image::Alignment::COMPACT);
image->make_black ();
return image;
}
static Cairo::RefPtr<Cairo::ImageSurface>
create_surface (shared_ptr<Image> image)
{
-#ifdef DCPOMATIC_HAVE_FORMAT_STRIDE_FOR_WIDTH
- Cairo::RefPtr<Cairo::ImageSurface> surface = Cairo::ImageSurface::create (
+ /* XXX: I don't think it's guaranteed that format_stride_for_width will return a stride without any padding,
+ * so it's lucky that this works.
+ */
+ DCPOMATIC_ASSERT (image->alignment() == Image::Alignment::COMPACT);
+ DCPOMATIC_ASSERT (image->pixel_format() == AV_PIX_FMT_BGRA);
+ return Cairo::ImageSurface::create (
image->data()[0],
Cairo::FORMAT_ARGB32,
image->size().width,
/* Cairo ARGB32 means first byte blue, second byte green, third byte red, fourth byte alpha */
Cairo::ImageSurface::format_stride_for_width (Cairo::FORMAT_ARGB32, image->size().width)
);
-#else
- /* Centos 5 does not have Cairo::ImageSurface::format_stride_for_width, so just use width * 4
- which I hope is safe (if slow)
- */
- Cairo::RefPtr<Cairo::ImageSurface> surface = Cairo::ImageSurface::create (
- image->data()[0],
- Cairo::FORMAT_ARGB32,
- image->size().width,
- image->size().height,
- image->size().width * 4
- );
-#endif
-
- return surface;
}
static string
-setup_font (StringText const& subtitle, list<shared_ptr<Font> > const& fonts)
+setup_font (StringText const& subtitle, list<shared_ptr<Font>> const& fonts)
{
if (!fc_config) {
fc_config = FcInitLoadConfig ();
}
- optional<boost::filesystem::path> font_file = default_font_file ();
+ auto font_file = default_font_file ();
- BOOST_FOREACH (shared_ptr<Font> i, fonts) {
+ for (auto i: fonts) {
if (i->id() == subtitle.font() && i->file()) {
- font_file = i->file ();
+ font_file = i->file().get();
}
}
- list<pair<boost::filesystem::path, string> >::const_iterator existing = fc_config_fonts.begin ();
- while (existing != fc_config_fonts.end() && existing->first != *font_file) {
+ auto existing = fc_config_fonts.cbegin ();
+ while (existing != fc_config_fonts.end() && existing->first != font_file) {
++existing;
}
font_name = existing->second;
} else {
/* Make this font available to DCP-o-matic */
- FcConfigAppFontAddFile (fc_config, reinterpret_cast<FcChar8 const *>(font_file->string().c_str()));
- FcPattern* pattern = FcPatternBuild (
- 0, FC_FILE, FcTypeString, font_file->string().c_str(), static_cast<char *> (0)
+ FcConfigAppFontAddFile (fc_config, reinterpret_cast<FcChar8 const *>(font_file.string().c_str()));
+ auto pattern = FcPatternBuild (
+ 0, FC_FILE, FcTypeString, font_file.string().c_str(), static_cast<char *>(0)
);
- FcObjectSet* object_set = FcObjectSetBuild (FC_FAMILY, FC_STYLE, FC_LANG, FC_FILE, static_cast<char *> (0));
- FcFontSet* font_set = FcFontList (fc_config, pattern, object_set);
+ auto object_set = FcObjectSetBuild (FC_FAMILY, FC_STYLE, FC_LANG, FC_FILE, static_cast<char *> (0));
+ auto font_set = FcFontList (fc_config, pattern, object_set);
if (font_set) {
for (int i = 0; i < font_set->nfont; ++i) {
FcPattern* font = font_set->fonts[i];
FcObjectSetDestroy (object_set);
FcPatternDestroy (pattern);
- fc_config_fonts.push_back (make_pair(*font_file, font_name));
+ fc_config_fonts.push_back (make_pair(font_file, font_name));
}
FcConfigSetCurrent (fc_config);
/* Round the fade start/end to the nearest frame start. Otherwise if a subtitle starts just after
the start of a frame it will be faded out.
*/
- DCPTime const fade_in_start = DCPTime::from_seconds(first.in().as_seconds()).round(frame_rate);
- DCPTime const fade_in_end = fade_in_start + DCPTime::from_seconds (first.fade_up_time().as_seconds ());
- DCPTime const fade_out_end = DCPTime::from_seconds (first.out().as_seconds()).round(frame_rate);
- DCPTime const fade_out_start = fade_out_end - DCPTime::from_seconds (first.fade_down_time().as_seconds ());
+ auto const fade_in_start = DCPTime::from_seconds(first.in().as_seconds()).round(frame_rate);
+ auto const fade_in_end = fade_in_start + DCPTime::from_seconds (first.fade_up_time().as_seconds ());
+ auto const fade_out_end = DCPTime::from_seconds (first.out().as_seconds()).round(frame_rate);
+ auto const fade_out_start = fade_out_end - DCPTime::from_seconds (first.fade_down_time().as_seconds ());
if (fade_in_start <= time && time <= fade_in_end && fade_in_start != fade_in_end) {
fade_factor *= DCPTime(time - fade_in_start).seconds() / DCPTime(fade_in_end - fade_in_start).seconds();
x_position (StringText const& first, int target_width, int layout_width)
{
int x = 0;
- switch (first.h_align ()) {
- case dcp::HALIGN_LEFT:
+ switch (first.h_align()) {
+ case dcp::HAlign::LEFT:
/* h_position is distance between left of frame and left of subtitle */
x = first.h_position() * target_width;
break;
- case dcp::HALIGN_CENTER:
+ case dcp::HAlign::CENTER:
/* h_position is distance between centre of frame and centre of subtitle */
x = (0.5 + first.h_position()) * target_width - layout_width / 2;
break;
- case dcp::HALIGN_RIGHT:
+ case dcp::HAlign::RIGHT:
/* h_position is distance between right of frame and right of subtitle */
x = (1.0 - first.h_position()) * target_width - layout_width;
break;
}
-
static int
y_position (StringText const& first, int target_height, int layout_height)
{
int y = 0;
- switch (first.v_align ()) {
- case dcp::VALIGN_TOP:
+ switch (first.v_align()) {
+ case dcp::VAlign::TOP:
/* SMPTE says that v_position is the distance between top
of frame and top of subtitle, but this doesn't always seem to be
the case in practice; Gunnar Ásgeirsson's Dolby server appears
- to put VALIGN_TOP subs with v_position as the distance between top
+ to put VAlign::TOP subs with v_position as the distance between top
of frame and bottom of subtitle.
*/
y = first.v_position() * target_height - layout_height;
break;
- case dcp::VALIGN_CENTER:
+ case dcp::VAlign::CENTER:
/* v_position is distance between centre of frame and centre of subtitle */
y = (0.5 + first.v_position()) * target_height - layout_height / 2;
break;
- case dcp::VALIGN_BOTTOM:
+ case dcp::VAlign::BOTTOM:
/* v_position is distance between bottom of frame and bottom of subtitle */
y = (1.0 - first.v_position()) * target_height - layout_height;
break;
}
-static void
-setup_layout (Glib::RefPtr<Pango::Layout> layout, string font_name, string markup)
-{
- layout->set_alignment (Pango::ALIGN_LEFT);
- Pango::FontDescription font (font_name);
- layout->set_font_description (font);
- layout->set_markup (markup);
-}
-
-/** Create a Pango layout using a dummy context which we can use to calculate the size
- * of the text we will render. Then we can transfer the layout over to the real context
- * for the actual render.
- */
-static Glib::RefPtr<Pango::Layout>
-create_layout()
-{
- PangoFontMap* c_font_map = pango_cairo_font_map_new ();
- DCPOMATIC_ASSERT (c_font_map);
- Glib::RefPtr<Pango::FontMap> font_map = Glib::wrap (c_font_map);
- PangoContext* c_context = pango_font_map_create_context (c_font_map);
- DCPOMATIC_ASSERT (c_context);
- Glib::RefPtr<Pango::Context> context = Glib::wrap (c_context);
- return Pango::Layout::create (context);
-}
-
-
/** @param subtitles A list of subtitles that are all on the same line,
* at the same time and with the same fade in/out.
*/
static PositionImage
-render_line (list<StringText> subtitles, list<shared_ptr<Font> > fonts, dcp::Size target, DCPTime time, int frame_rate)
+render_line (list<StringText> subtitles, list<shared_ptr<Font>> fonts, dcp::Size target, DCPTime time, int frame_rate)
{
/* XXX: this method can only handle italic / bold changes mid-line,
nothing else yet.
*/
DCPOMATIC_ASSERT (!subtitles.empty ());
- StringText const& first = subtitles.front ();
+ auto const& first = subtitles.front ();
- string const font_name = setup_font (first, fonts);
- float const fade_factor = calculate_fade_factor (first, time, frame_rate);
- string const markup = marked_up (subtitles, target.height, fade_factor);
- Glib::RefPtr<Pango::Layout> layout = create_layout ();
+ auto const font_name = setup_font (first, fonts);
+ auto const fade_factor = calculate_fade_factor (first, time, frame_rate);
+ auto const markup = marked_up (subtitles, target.height, fade_factor);
+ auto layout = create_layout ();
setup_layout (layout, font_name, markup);
dcp::Size size;
layout->get_pixel_size (size.width, size.height);
}
}
- float const border_width = first.effect() == dcp::BORDER ? (first.outline_width * target.width / 2048.0) : 0;
+ auto const border_width = first.effect() == dcp::Effect::BORDER ? (first.outline_width * target.width / 2048.0) : 0;
size.width += 2 * ceil (border_width);
size.height += 2 * ceil (border_width);
size.width += x_offset;
size.height += y_offset;
- shared_ptr<Image> image = create_image (size);
- Cairo::RefPtr<Cairo::Surface> surface = create_surface (image);
- Cairo::RefPtr<Cairo::Context> context = Cairo::Context::create (surface);
+ auto image = create_image (size);
+ auto surface = create_surface (image);
+ auto context = Cairo::Context::create (surface);
context->set_line_width (1);
context->scale (x_scale, y_scale);
layout->update_from_cairo_context (context);
- if (first.effect() == dcp::SHADOW) {
+ if (first.effect() == dcp::Effect::SHADOW) {
/* Drop-shadow effect */
set_source_rgba (context, first.effect_colour(), fade_factor);
context->move_to (x_offset + 4, y_offset + 4);
context->fill ();
}
- if (first.effect() == dcp::BORDER) {
+ if (first.effect() == dcp::Effect::BORDER) {
/* Border effect */
set_source_rgba (context, first.effect_colour(), fade_factor);
context->set_line_width (border_width);
* @param frame_rate DCP frame rate.
*/
list<PositionImage>
-render_text (list<StringText> subtitles, list<shared_ptr<Font> > fonts, dcp::Size target, DCPTime time, int frame_rate)
+render_text (list<StringText> subtitles, list<shared_ptr<Font>> fonts, dcp::Size target, DCPTime time, int frame_rate)
{
list<StringText> pending;
list<PositionImage> images;
- BOOST_FOREACH (StringText const & i, subtitles) {
+ for (auto const& i: subtitles) {
if (!pending.empty() && (i.v_align() != pending.back().v_align() || fabs(i.v_position() - pending.back().v_position()) > 1e-4)) {
images.push_back (render_line (pending, fonts, target, time, frame_rate));
pending.clear ();
pending.push_back (i);
}
- if (!pending.empty ()) {
+ if (!pending.empty()) {
images.push_back (render_line (pending, fonts, target, time, frame_rate));
}
projects / dcpomatic.git / blobdiff