mirror of https://github.com/odrling/Aegisub
146 lines
4.6 KiB
C++
146 lines
4.6 KiB
C++
// Copyright (c) 2007, Rodrigo Braz Monteiro
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of the Aegisub Group nor the names of its contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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// Aegisub Project http://www.aegisub.org/
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/// @file subtitles_provider_csri.cpp
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/// @brief Wrapper for CSRI-based subtitle renderers
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/// @ingroup subtitle_rendering
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///
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#ifdef WITH_CSRI
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#include "subtitles_provider_csri.h"
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#include "include/aegisub/subtitles_provider.h"
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#include "options.h"
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#include "subtitle_format.h"
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#include "video_frame.h"
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#include <libaegisub/fs.h>
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#include <libaegisub/path.h>
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#include <libaegisub/scoped_ptr.h>
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#include <libaegisub/make_unique.h>
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#include <libaegisub/vfr.h>
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#include <boost/filesystem.hpp>
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#include <mutex>
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#ifdef WIN32
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#define CSRIAPI
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#endif
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#include <csri/csri.h>
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namespace {
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// CSRI renderers are not required to be thread safe (and VSFilter very much
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// is not)
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std::mutex csri_mutex;
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class CSRISubtitlesProvider final : public SubtitlesProvider {
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agi::scoped_holder<csri_inst*> instance;
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csri_rend *renderer;
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/// Name of the file passed to renderers with can_open_mem false
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agi::fs::path tempfile;
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public:
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CSRISubtitlesProvider(std::string subType);
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~CSRISubtitlesProvider();
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void LoadSubtitles(AssFile *subs);
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void DrawSubtitles(VideoFrame &dst, double time);
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};
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CSRISubtitlesProvider::CSRISubtitlesProvider(std::string type)
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: instance(nullptr, csri_close)
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{
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std::lock_guard<std::mutex> lock(csri_mutex);
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for (csri_rend *cur = csri_renderer_default(); cur; cur = csri_renderer_next(cur)) {
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if (type == csri_renderer_info(cur)->name) {
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renderer = cur;
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break;
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}
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}
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if (!renderer)
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throw agi::InternalError("CSRI renderer vanished between initial list and creation?", 0);
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}
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CSRISubtitlesProvider::~CSRISubtitlesProvider() {
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agi::fs::Remove(tempfile);
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}
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void CSRISubtitlesProvider::LoadSubtitles(AssFile *subs) {
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if (tempfile.empty())
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tempfile = unique_path(config::path->Decode("?temp/csri-%%%%-%%%%-%%%%-%%%%.ass"));
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SubtitleFormat::GetWriter(tempfile)->WriteFile(subs, tempfile, 0, "utf-8");
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std::lock_guard<std::mutex> lock(csri_mutex);
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instance = csri_open_file(renderer, tempfile.string().c_str(), nullptr);
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}
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void CSRISubtitlesProvider::DrawSubtitles(VideoFrame &dst,double time) {
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if (!instance) return;
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csri_frame frame;
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if (dst.flipped) {
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frame.planes[0] = dst.data.data() + (dst.height-1) * dst.width * 4;
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frame.strides[0] = -(signed)dst.width * 4;
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}
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else {
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frame.planes[0] = dst.data.data();
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frame.strides[0] = dst.width * 4;
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}
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frame.pixfmt = CSRI_F_BGR_;
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csri_fmt format = { frame.pixfmt, dst.width, dst.height };
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std::lock_guard<std::mutex> lock(csri_mutex);
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if (!csri_request_fmt(instance, &format))
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csri_render(instance, &frame, time);
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}
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}
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namespace csri {
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std::vector<std::string> List() {
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std::vector<std::string> final;
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for (csri_rend *cur = csri_renderer_default(); cur; cur = csri_renderer_next(cur)) {
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std::string name(csri_renderer_info(cur)->name);
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if (name.find("aegisub") != name.npos)
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final.insert(final.begin(), name);
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else
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final.push_back(name);
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}
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return final;
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}
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std::unique_ptr<SubtitlesProvider> Create(std::string const& name, agi::BackgroundRunner *) {
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return agi::make_unique<CSRISubtitlesProvider>(name);
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}
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}
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#endif // WITH_CSRI
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