mirror of https://github.com/odrling/Aegisub
291 lines
8.8 KiB
C++
291 lines
8.8 KiB
C++
// Copyright (c) 2013, Thomas Goyne <plorkyeran@aegisub.org>
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//
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// Permission to use, copy, modify, and distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice appear in all copies.
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//
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// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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//
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// Aegisub Project http://www.aegisub.org/
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#include "resolution_resampler.h"
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#include "ass_dialogue.h"
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#include "ass_file.h"
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#include "ass_style.h"
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#include "utils.h"
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#include <libaegisub/exception.h>
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#include <libaegisub/of_type_adaptor.h>
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#include <libaegisub/split.h>
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#include <libaegisub/util.h>
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#include <libaegisub/ycbcr_conv.h>
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#include <algorithm>
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#include <boost/algorithm/string/predicate.hpp>
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#include <cmath>
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#include <wx/intl.h>
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enum {
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LEFT = 0,
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RIGHT = 1,
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TOP = 2,
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BOTTOM = 3
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};
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static const std::string names[] = {
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"None",
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"TV.601", "PC.601",
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"TV.709", "PC.709",
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"TV.FCC", "PC.FCC",
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"TV.240M", "PC.240M"
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};
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YCbCrMatrix MatrixFromString(std::string const& str) {
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if (str.empty()) return YCbCrMatrix::tv_709;
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auto pos = std::find(std::begin(names), std::end(names), str);
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if (pos == std::end(names))
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return YCbCrMatrix::rgb;
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return static_cast<YCbCrMatrix>(std::distance(std::begin(names), pos));
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}
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std::string MatrixToString(YCbCrMatrix mat) {
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return names[static_cast<int>(mat)];
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}
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std::vector<std::string> MatrixNames() {
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return {std::begin(names), std::end(names)};
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}
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namespace {
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std::string transform_drawing(std::string const& drawing, int shift_x, int shift_y, double scale_x, double scale_y) {
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bool is_x = true;
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std::string final;
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final.reserve(drawing.size());
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for (auto const& cur : agi::Split(drawing, ' ')) {
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double val;
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if (agi::util::try_parse(agi::str(cur), &val)) {
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if (is_x)
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val = (val + shift_x) * scale_x;
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else
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val = (val + shift_y) * scale_y;
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val = round(val * 8) / 8.0; // round to eighth-pixels
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final += float_to_string(val);
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final += ' ';
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is_x = !is_x;
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}
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else if (cur.size() == 1) {
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char c = tolower(cur[0]);
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if (c == 'm' || c == 'n' || c == 'l' || c == 'b' || c == 's' || c == 'p' || c == 'c') {
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is_x = true;
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final += c;
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final += ' ';
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}
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}
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}
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if (final.size())
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final.pop_back();
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return final;
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}
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struct resample_state {
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const int *margin;
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double rx;
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double ry;
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double ar;
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agi::ycbcr_converter conv;
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bool convert_colors;
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};
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void resample_tags(std::string const& name, AssOverrideParameter *cur, void *ud) {
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resample_state *state = static_cast<resample_state *>(ud);
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double resizer = 1.0;
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int shift = 0;
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switch (cur->classification) {
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case AssParameterClass::ABSOLUTE_SIZE:
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resizer = state->ry;
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break;
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case AssParameterClass::ABSOLUTE_POS_X:
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resizer = state->rx;
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shift = state->margin[LEFT];
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break;
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case AssParameterClass::ABSOLUTE_POS_Y:
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resizer = state->ry;
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shift = state->margin[TOP];
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break;
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case AssParameterClass::RELATIVE_SIZE_X:
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resizer = state->ar;
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break;
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case AssParameterClass::RELATIVE_SIZE_Y:
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break;
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case AssParameterClass::DRAWING: {
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cur->Set(transform_drawing(
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cur->Get<std::string>(),
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state->margin[LEFT], state->margin[TOP], state->rx, state->ry));
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return;
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}
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case AssParameterClass::COLOR:
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if (state->convert_colors)
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cur->Set<std::string>(state->conv.rgb_to_rgb(agi::Color{cur->Get<std::string>()}).GetAssOverrideFormatted());
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return;
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default:
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return;
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}
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VariableDataType curType = cur->GetType();
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if (curType == VariableDataType::FLOAT)
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cur->Set((cur->Get<double>() + shift) * resizer);
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else if (curType == VariableDataType::INT)
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cur->Set<int>((cur->Get<int>() + shift) * resizer + 0.5);
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}
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void resample_line(resample_state *state, AssDialogue &diag) {
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if (diag.Comment && (boost::starts_with(diag.Effect.get(), "template") || boost::starts_with(diag.Effect.get(), "code")))
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return;
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auto blocks = diag.ParseTags();
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for (auto block : blocks | agi::of_type<AssDialogueBlockOverride>())
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block->ProcessParameters(resample_tags, state);
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for (auto drawing : blocks | agi::of_type<AssDialogueBlockDrawing>())
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drawing->text = transform_drawing(drawing->text, 0, 0, state->rx / state->ar, state->ry);
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for (size_t i = 0; i < 3; ++i) {
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if (diag.Margin[i])
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diag.Margin[i] = int((diag.Margin[i] + state->margin[i]) * (i < 2 ? state->rx : state->ry) + 0.5);
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}
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diag.UpdateText(blocks);
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}
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void resample_style(resample_state *state, AssStyle &style) {
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style.fontsize = int(style.fontsize * state->ry + 0.5);
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style.outline_w *= state->ry;
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style.shadow_w *= state->ry;
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style.spacing *= state->rx;
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style.scalex *= state->ar;
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for (int i = 0; i < 3; i++)
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style.Margin[i] = int((style.Margin[i] + state->margin[i]) * (i < 2 ? state->rx : state->ry) + 0.5);
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if (state->convert_colors) {
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style.primary = state->conv.rgb_to_rgb(style.primary);
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style.secondary = state->conv.rgb_to_rgb(style.secondary);
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style.outline = state->conv.rgb_to_rgb(style.outline);
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style.shadow = state->conv.rgb_to_rgb(style.shadow);
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}
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style.UpdateData();
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}
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agi::ycbcr_matrix matrix(YCbCrMatrix mat) {
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switch (mat) {
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case YCbCrMatrix::rgb: return agi::ycbcr_matrix::bt601;
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case YCbCrMatrix::tv_601: case YCbCrMatrix::pc_601: return agi::ycbcr_matrix::bt601;
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case YCbCrMatrix::tv_709: case YCbCrMatrix::pc_709: return agi::ycbcr_matrix::bt709;
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case YCbCrMatrix::tv_fcc: case YCbCrMatrix::pc_fcc: return agi::ycbcr_matrix::fcc;
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case YCbCrMatrix::tv_240m: case YCbCrMatrix::pc_240m: return agi::ycbcr_matrix::smpte_240m;
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}
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throw agi::InternalError("Invalid matrix");
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}
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agi::ycbcr_range range(YCbCrMatrix mat) {
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switch (mat) {
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case YCbCrMatrix::rgb:
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case YCbCrMatrix::tv_601:
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case YCbCrMatrix::tv_709:
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case YCbCrMatrix::tv_fcc:
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case YCbCrMatrix::tv_240m:
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return agi::ycbcr_range::tv;
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case YCbCrMatrix::pc_601:
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case YCbCrMatrix::pc_709:
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case YCbCrMatrix::pc_fcc:
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case YCbCrMatrix::pc_240m:
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return agi::ycbcr_range::pc;
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}
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throw agi::InternalError("Invalid matrix");
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}
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}
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void ResampleResolution(AssFile *ass, ResampleSettings settings) {
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auto horizontal_stretch = 1.0;
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auto old_ar = double(settings.source_x) / settings.source_y;
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auto new_ar = double(settings.dest_x) / settings.dest_y;
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bool border_horizontally = new_ar > old_ar;
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// Don't convert aspect ratio if it's very close to correct
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// (for reference, 848x480 <-> 1280x720 is .006)
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if (std::abs(old_ar - new_ar) / new_ar > .01) {
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switch (settings.ar_mode) {
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case ResampleARMode::RemoveBorder:
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border_horizontally = !border_horizontally;
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case ResampleARMode::AddBorder:
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if (border_horizontally) // Wider/Shorter
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settings.margin[LEFT] = settings.margin[RIGHT] = (settings.source_y * new_ar - settings.source_x) / 2;
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else // Taller/Narrower
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settings.margin[TOP] = settings.margin[BOTTOM] = (settings.source_x / new_ar - settings.source_y) / 2;
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break;
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case ResampleARMode::Stretch:
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horizontal_stretch = new_ar / old_ar;
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break;
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case ResampleARMode::Manual:
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old_ar =
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double(settings.source_x + settings.margin[LEFT] + settings.margin[RIGHT]) /
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double(settings.source_y + settings.margin[TOP] + settings.margin[BOTTOM]);
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if (std::abs(old_ar - new_ar) / new_ar > .01)
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horizontal_stretch = new_ar / old_ar;
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break;
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}
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}
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// Add margins to original resolution
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settings.source_x += settings.margin[LEFT] + settings.margin[RIGHT];
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settings.source_y += settings.margin[TOP] + settings.margin[BOTTOM];
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bool resample_colors =
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settings.source_matrix != settings.dest_matrix &&
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settings.source_matrix != YCbCrMatrix::rgb &&
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settings.dest_matrix != YCbCrMatrix::rgb;
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resample_state state = {
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settings.margin,
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double(settings.dest_x) / double(settings.source_x),
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double(settings.dest_y) / double(settings.source_y),
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horizontal_stretch,
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agi::ycbcr_converter{
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matrix(settings.source_matrix),
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range(settings.source_matrix),
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matrix(settings.dest_matrix),
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range(settings.dest_matrix),
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},
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resample_colors
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};
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for (auto& line : ass->Styles)
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resample_style(&state, line);
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for (auto& line : ass->Events)
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resample_line(&state, line);
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ass->SetScriptInfo("PlayResX", std::to_string(settings.dest_x));
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ass->SetScriptInfo("PlayResY", std::to_string(settings.dest_y));
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if (resample_colors)
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ass->SetScriptInfo("YCbCr Matrix", MatrixToString(settings.dest_matrix));
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ass->Commit(_("resolution resampling"), AssFile::COMMIT_SCRIPTINFO | AssFile::COMMIT_DIAG_FULL);
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}
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