295 lines
9 KiB
C++
295 lines
9 KiB
C++
// Copyright (c) 2006, Fredrik Mellbin
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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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//
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// $Id$
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/// @file video_provider_avs.cpp
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/// @brief Avisynth-based video provider
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/// @ingroup video_input
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///
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#include "config.h"
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#ifdef WITH_AVISYNTH
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#ifndef AGI_PRE
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#include <wx/filename.h>
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#include <wx/msw/registry.h>
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#endif
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#include "charset_conv.h"
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#include "compat.h"
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#include "gl_wrap.h"
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#include <libaegisub/log.h>
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#include "mkv_wrap.h"
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#include "standard_paths.h"
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#include "vfw_wrap.h"
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#include "video_context.h"
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#include "video_provider_avs.h"
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namespace media {
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/// @brief Constructor
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/// @param _filename
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///
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AvisynthVideoProvider::AvisynthVideoProvider(wxString filename) try
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: usedDirectShow(false)
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, decoderName(_("Unknown"))
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, num_frames(0)
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, last_fnum(-1)
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, RGB32Video(NULL)
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{
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RGB32Video = OpenVideo(filename);
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vi = RGB32Video->GetVideoInfo();
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}
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catch (AvisynthError const& err) {
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throw VideoOpenError("Avisynth error: " + std::string(err.msg));
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}
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/// @brief Destructor
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AvisynthVideoProvider::~AvisynthVideoProvider() {
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iframe.Clear();
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}
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AVSValue AvisynthVideoProvider::Open(wxFileName const& fname, wxString const& extension) {
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char *videoFilename = env->SaveString(fname.GetShortPath().mb_str(csConvLocal));
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// Avisynth file, just import it
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if (extension == L".avs") {
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LOG_I("avisynth/video") << "Opening .avs file with Import";
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decoderName = L"Import";
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return env->Invoke("Import", videoFilename);
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}
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// Open avi file with AviSource
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if (extension == L".avi") {
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LOG_I("avisynth/video") << "Opening .avi file with AviSource";
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try {
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const char *argnames[2] = { 0, "audio" };
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AVSValue args[2] = { videoFilename, false };
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decoderName = L"AviSource";
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return env->Invoke("AviSource", AVSValue(args,2), argnames);
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}
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// On Failure, fallback to DSS
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catch (AvisynthError &) {
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LOG_I("avisynth/video") << "Failed to open .avi file with AviSource, switching to DirectShowSource";
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}
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}
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// Open d2v with mpeg2dec3
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if (extension == L".d2v" && env->FunctionExists("Mpeg2Dec3_Mpeg2Source")) {
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LOG_I("avisynth/video") << "Opening .d2v file with Mpeg2Dec3_Mpeg2Source";
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AVSValue script = env->Invoke("Mpeg2Dec3_Mpeg2Source", videoFilename);
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decoderName = L"Mpeg2Dec3_Mpeg2Source";
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//if avisynth is 2.5.7 beta 2 or newer old mpeg2decs will crash without this
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if (env->FunctionExists("SetPlanarLegacyAlignment")) {
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AVSValue args[2] = { script, true };
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script = env->Invoke("SetPlanarLegacyAlignment", AVSValue(args,2));
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}
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return script;
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}
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// If that fails, try opening it with DGDecode
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if (extension == L".d2v" && env->FunctionExists("DGDecode_Mpeg2Source")) {
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LOG_I("avisynth/video") << "Opening .d2v file with DGDecode_Mpeg2Source";
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decoderName = L"DGDecode_Mpeg2Source";
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return env->Invoke("Mpeg2Source", videoFilename);
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//note that DGDecode will also have issues like if the version is too ancient but no sane person
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//would use that anyway
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}
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if (extension == L".d2v" && env->FunctionExists("Mpeg2Source")) {
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LOG_I("avisynth/video") << "Opening .d2v file with other Mpeg2Source";
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AVSValue script = env->Invoke("Mpeg2Source", videoFilename);
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decoderName = L"Mpeg2Source";
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//if avisynth is 2.5.7 beta 2 or newer old mpeg2decs will crash without this
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if (env->FunctionExists("SetPlanarLegacyAlignment"))
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script = env->Invoke("SetPlanarLegacyAlignment", script);
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return script;
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}
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// Try loading DirectShowSource2
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if (!env->FunctionExists("dss2")) {
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wxFileName dss2path(StandardPaths::DecodePath(_T("?data/avss.dll")));
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if (dss2path.FileExists()) {
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env->Invoke("LoadPlugin",env->SaveString(dss2path.GetFullPath().mb_str(csConvLocal)));
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}
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}
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// If DSS2 loaded properly, try using it
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if (env->FunctionExists("dss2")) {
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LOG_I("avisynth/video") << "Opening file with DSS2";
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decoderName = L"DSS2";
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return env->Invoke("DSS2", videoFilename);
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}
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// Try DirectShowSource
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// Load DirectShowSource.dll from app dir if it exists
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wxFileName dsspath(StandardPaths::DecodePath(_T("?data/DirectShowSource.dll")));
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if (dsspath.FileExists()) {
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env->Invoke("LoadPlugin",env->SaveString(dsspath.GetFullPath().mb_str(csConvLocal)));
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}
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// Then try using DSS
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if (env->FunctionExists("DirectShowSource")) {
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const char *argnames[3] = { 0, "video", "audio" };
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AVSValue args[3] = { videoFilename, true, false };
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usedDirectShow = true;
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decoderName = L"DirectShowSource";
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LOG_I("avisynth/video") << "Opening file with DirectShowSource";
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return env->Invoke("DirectShowSource", AVSValue(args,3), argnames);
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}
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// Failed to find a suitable function
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LOG_E("avisynth/video") << "DSS function not found";
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throw VideoNotSupported("No function suitable for opening the video found");
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}
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/// @brief Actually open the video into Avisynth
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/// @param _filename
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/// @return
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///
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PClip AvisynthVideoProvider::OpenVideo(wxString filename) {
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wxMutexLocker lock(AviSynthMutex);
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wxFileName fname(filename);
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if (!fname.FileExists())
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throw agi::FileNotFoundError(STD_STR(filename));
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AVSValue script;
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wxString extension = filename.Right(4).Lower();
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try {
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script = Open(fname, extension);
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}
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catch (AvisynthError const& err) {
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throw VideoOpenError("Avisynth error: " + std::string(err.msg));
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}
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// Check if video was loaded properly
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if (!script.IsClip() || !script.AsClip()->GetVideoInfo().HasVideo()) {
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throw VideoNotSupported("No usable video found");
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}
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// Read keyframes and timecodes from MKV file
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bool mkvOpen = MatroskaWrapper::wrapper.IsOpen();
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KeyFrames.clear();
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if (extension == L".mkv" || mkvOpen) {
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// Parse mkv
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if (!mkvOpen) MatroskaWrapper::wrapper.Open(filename);
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// Get keyframes
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KeyFrames = MatroskaWrapper::wrapper.GetKeyFrames();
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MatroskaWrapper::wrapper.SetToTimecodes(vfr_fps);
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// Close mkv
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MatroskaWrapper::wrapper.Close();
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}
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// check if we have windows, if so we can load keyframes from AVI files using VFW
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#ifdef __WINDOWS__
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else if (extension == L".avi") {
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KeyFrames.clear();
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KeyFrames = VFWWrapper::GetKeyFrames(filename);
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}
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#endif /* __WINDOWS__ */
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// Check if the file is all keyframes
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bool isAllKeyFrames = true;
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for (unsigned int i=1; i<KeyFrames.size(); i++) {
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// Is the last keyframe not this keyframe -1?
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if (KeyFrames[i-1] != (int)(i-1)) {
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// It's not all keyframes, go ahead
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isAllKeyFrames = false;
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break;
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}
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}
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// If it is all keyframes, discard the keyframe info as it is useless
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if (isAllKeyFrames) {
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KeyFrames.clear();
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}
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real_fps = (double)vi.fps_numerator / vi.fps_denominator;
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// Convert to RGB32
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script = env->Invoke("ConvertToRGB32", script);
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// Cache
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return (env->Invoke("Cache", script)).AsClip();
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}
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/// @brief Actually get a frame
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/// @param _n
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/// @return
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///
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const AegiVideoFrame AvisynthVideoProvider::GetFrame(int n) {
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if (vfr_fps.IsLoaded()) {
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n = real_fps.FrameAtTime(vfr_fps.TimeAtFrame(n));
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}
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// Get avs frame
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wxMutexLocker lock(AviSynthMutex);
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PVideoFrame frame = RGB32Video->GetFrame(n,env);
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int Bpp = vi.BitsPerPixel() / 8;
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// Aegisub's video frame
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AegiVideoFrame &final = iframe;
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final.flipped = true;
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final.invertChannels = true;
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// Set size properties
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final.pitch = frame->GetPitch();
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final.w = frame->GetRowSize() / Bpp;
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final.h = frame->GetHeight();
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// Allocate
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final.Allocate();
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// Copy
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memcpy(final.data,frame->GetReadPtr(),final.pitch * final.h);
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// Set last number
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last_fnum = n;
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return final;
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}
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/// @brief Get warning
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///
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wxString AvisynthVideoProvider::GetWarning() const {
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if (usedDirectShow) return L"Warning! The file is being opened using Avisynth's DirectShowSource, which has unreliable seeking. Frame numbers might not match the real number. PROCEED AT YOUR OWN RISK!";
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else return L"";
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}
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#endif
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} // namespace media
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