Aegisub/aegisub/src/video_provider_avs.cpp

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// Copyright (c) 2006, Fredrik Mellbin
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// * Neither the name of the Aegisub Group nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// Aegisub Project http://www.aegisub.org/
//
// $Id$
/// @file video_provider_avs.cpp
/// @brief Avisynth-based video provider
/// @ingroup video_input
///
///////////
// Headers
#include "config.h"
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#ifdef WITH_AVISYNTH
#ifndef AGI_PRE
#include <wx/filename.h>
#include <wx/msw/registry.h>
#endif
#include "charset_conv.h"
#include "gl_wrap.h"
#include "mkv_wrap.h"
#include "standard_paths.h"
#include "vfw_wrap.h"
#include "video_context.h"
#include "video_provider_avs.h"
/// @brief Constructor
/// @param _filename
///
AvisynthVideoProvider::AvisynthVideoProvider(wxString _filename) {
AVSTRACE(wxString::Format(_T("AvisynthVideoProvider: Creating new AvisynthVideoProvider: \"%s\", \"%s\""), _filename, _subfilename));
bool mpeg2dec3_priority = true;
RGB32Video = NULL;
num_frames = 0;
last_fnum = -1;
KeyFrames.clear();
AVSTRACE(_T("AvisynthVideoProvider: Opening video"));
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RGB32Video = OpenVideo(_filename,mpeg2dec3_priority);
AVSTRACE(_T("AvisynthVideoProvider: Video opened"));
vi = RGB32Video->GetVideoInfo();
AVSTRACE(_T("AvisynthVideoProvider: Got video info"));
AVSTRACE(_T("AvisynthVideoProvider: Done creating AvisynthVideoProvider"));
}
/// @brief Destructor
///
AvisynthVideoProvider::~AvisynthVideoProvider() {
AVSTRACE(_T("AvisynthVideoProvider: Destroying AvisynthVideoProvider"));
RGB32Video = NULL;
AVSTRACE(_T("AvisynthVideoProvider: Destroying frame"));
iframe.Clear();
AVSTRACE(_T("AvisynthVideoProvider: AvisynthVideoProvider destroyed"));
}
/// @brief Actually open the video into Avisynth
/// @param _filename
/// @param mpeg2dec3_priority
/// @return
///
PClip AvisynthVideoProvider::OpenVideo(wxString _filename, bool mpeg2dec3_priority) {
AVSTRACE(_T("AvisynthVideoProvider::OpenVideo: Opening video"));
wxMutexLocker lock(AviSynthMutex);
AVSTRACE(_T("AvisynthVideoProvider::OpenVideo: Got AVS mutex"));
AVSValue script;
usedDirectShow = false;
decoderName = _("Unknown");
wxString extension = _filename.Right(4);
extension.LowerCase();
try {
// Prepare filename
//char *videoFilename = env->SaveString(_filename.mb_str(wxConvLocal));
wxFileName fname(_filename);
char *videoFilename = env->SaveString(fname.GetShortPath().mb_str(csConvLocal));
// Avisynth file, just import it
if (extension == _T(".avs")) {
AVSTRACE(_T("AvisynthVideoProvider::OpenVideo: Opening .avs file with Import"));
script = env->Invoke("Import", videoFilename);
AVSTRACE(_T("AvisynthVideoProvider::OpenVideo: Finished"));
decoderName = _T("Import");
}
// Open avi file with AviSource
else if (extension == _T(".avi")) {
AVSTRACE(_T("AvisynthVideoProvider::OpenVideo: Opening .avi file with AviSource"));
try {
const char *argnames[2] = { 0, "audio" };
AVSValue args[2] = { videoFilename, false };
script = env->Invoke("AviSource", AVSValue(args,2), argnames);
AVSTRACE(_T("AvisynthVideoProvider::OpenVideo: Successfully opened .avi file without audio"));
decoderName = _T("AviSource");
}
// On Failure, fallback to DSS
catch (AvisynthError &) {
AVSTRACE(_T("Failed to open .avi file with AviSource, switching to DirectShowSource"));
goto directshowOpen;
}
}
// Open d2v with mpeg2dec3
else if (extension == _T(".d2v") && env->FunctionExists("Mpeg2Dec3_Mpeg2Source") && mpeg2dec3_priority) {
AVSTRACE(_T("AvisynthVideoProvider::OpenVideo: Opening .d2v file with Mpeg2Dec3_Mpeg2Source"));
script = env->Invoke("Mpeg2Dec3_Mpeg2Source", videoFilename);
decoderName = _T("Mpeg2Dec3_Mpeg2Source");
//if avisynth is 2.5.7 beta 2 or newer old mpeg2decs will crash without this
if (env->FunctionExists("SetPlanarLegacyAlignment")) {
AVSValue args[2] = { script, true };
script = env->Invoke("SetPlanarLegacyAlignment", AVSValue(args,2));
}
}
// If that fails, try opening it with DGDecode
else if (extension == _T(".d2v") && env->FunctionExists("DGDecode_Mpeg2Source")) {
AVSTRACE(_T("AvisynthVideoProvider::OpenVideo: Opening .d2v file with DGDecode_Mpeg2Source"));
script = env->Invoke("Mpeg2Source", videoFilename);
decoderName = _T("DGDecode_Mpeg2Source");
//note that DGDecode will also have issues like if the version is too ancient but no sane person
//would use that anyway
}
else if (extension == _T(".d2v") && env->FunctionExists("Mpeg2Source")) {
AVSTRACE(_T("AvisynthVideoProvider::OpenVideo: Opening .d2v file with other Mpeg2Source"));
script = env->Invoke("Mpeg2Source", videoFilename);
decoderName = _T("Mpeg2Source");
//if avisynth is 2.5.7 beta 2 or newer old mpeg2decs will crash without this
if (env->FunctionExists("SetPlanarLegacyAlignment"))
script = env->Invoke("SetPlanarLegacyAlignment", script);
}
// Some other format, such as mkv, mp4, ogm... try both flavors of DirectShowSource
else {
directshowOpen:
// DirectShowSource
AVSTRACE(_T("AvisynthVideoProvider::OpenVideo: Opening file with DirectShowSource"));
// Try loading DirectShowSource2
bool dss2 = false;
if (env->FunctionExists("dss2")) dss2 = true;
if (!dss2) {
wxFileName dss2path(StandardPaths::DecodePath(_T("?data/avss.dll")));
if (dss2path.FileExists()) {
AVSTRACE(_T("AvisynthVideoProvider::OpenVideo: Loading DirectShowSource2"));
env->Invoke("LoadPlugin",env->SaveString(dss2path.GetFullPath().mb_str(csConvLocal)));
AVSTRACE(_T("AvisynthVideoProvider::OpenVideo: Loaded DirectShowSource2"));
}
}
// If DSS2 loaded properly, try using it
dss2 = false;
if (env->FunctionExists("dss2")) {
AVSTRACE(_T("AvisynthVideoProvider::OpenVideo: Invoking DSS2"));
script = env->Invoke("DSS2", videoFilename);
AVSTRACE(_T("AvisynthVideoProvider::OpenVideo: Successfully opened file with DSS2"));
dss2 = true;
decoderName = _T("DSS2");
}
// Try DirectShowSource
if (!dss2) {
// Load DirectShowSource.dll from app dir if it exists
wxFileName dsspath(StandardPaths::DecodePath(_T("?data/DirectShowSource.dll")));
if (dsspath.FileExists()) {
AVSTRACE(_T("AvisynthVideoProvider::OpenVideo: Loading DirectShowSource"));
env->Invoke("LoadPlugin",env->SaveString(dsspath.GetFullPath().mb_str(csConvLocal)));
AVSTRACE(_T("AvisynthVideoProvider::OpenVideo: Loaded DirectShowSource"));
}
// Then try using DSS
if (env->FunctionExists("DirectShowSource")) {
const char *argnames[3] = { 0, "video", "audio" };
AVSValue args[3] = { videoFilename, true, false };
script = env->Invoke("DirectShowSource", AVSValue(args,3), argnames);
AVSTRACE(_T("AvisynthVideoProvider::OpenVideo: Successfully opened file with DSS without audio"));
usedDirectShow = true;
decoderName = _T("DirectShowSource");
}
// Failed to find a suitable function
else {
AVSTRACE(_T("AvisynthVideoProvider::OpenVideo: DSS function not found"));
throw AvisynthError("No function suitable for opening the video found");
}
}
}
}
// Catch errors
catch (AvisynthError &err) {
AVSTRACE(_T("AvisynthVideoProvider::OpenVideo: Avisynth error: ") + wxString(err.msg,csConvLocal));
throw _T("AviSynth error: ") + wxString(err.msg,csConvLocal);
}
// Check if video was loaded properly
if (!script.IsClip() || !script.AsClip()->GetVideoInfo().HasVideo()) {
AVSTRACE(_T("AvisynthVideoProvider::OpenVideo: No suitable video found"));
throw _T("Avisynth: No usable video found in ") + _filename;
}
// Read keyframes and timecodes from MKV file
bool mkvOpen = MatroskaWrapper::wrapper.IsOpen();
KeyFrames.clear();
if (extension == _T(".mkv") || mkvOpen) {
// Parse mkv
if (!mkvOpen) MatroskaWrapper::wrapper.Open(_filename);
// Get keyframes
KeyFrames = MatroskaWrapper::wrapper.GetKeyFrames();
MatroskaWrapper::wrapper.SetToTimecodes(vfr_fps);
// Close mkv
MatroskaWrapper::wrapper.Close();
}
// check if we have windows, if so we can load keyframes from AVI files using VFW
#ifdef __WINDOWS__
else if (extension == _T(".avi")) {
KeyFrames.clear();
KeyFrames = VFWWrapper::GetKeyFrames(_filename);
}
#endif /* __WINDOWS__ */
// Check if the file is all keyframes
bool isAllKeyFrames = true;
for (unsigned int i=1; i<KeyFrames.size(); i++) {
// Is the last keyframe not this keyframe -1?
if (KeyFrames[i-1] != (int)(i-1)) {
// It's not all keyframes, go ahead
isAllKeyFrames = false;
break;
}
}
// If it is all keyframes, discard the keyframe info as it is useless
if (isAllKeyFrames) {
KeyFrames.clear();
}
real_fps = (double)vi.fps_numerator / vi.fps_denominator;
// Convert to RGB32
script = env->Invoke("ConvertToRGB32", script);
AVSTRACE(_T("AvisynthVideoProvider::OpenVideo: Converted to RGB32"));
// Cache
AVSTRACE(_T("AvisynthVideoProvider::OpenVideo: Finished opening video, AVS mutex will be released now"));
return (env->Invoke("Cache", script)).AsClip();
}
/// @brief Actually get a frame
/// @param _n
/// @return
///
const AegiVideoFrame AvisynthVideoProvider::GetFrame(int n) {
if (vfr_fps.IsLoaded()) {
n = real_fps.FrameAtTime(vfr_fps.TimeAtFrame(n));
}
// Get avs frame
AVSTRACE(_T("AvisynthVideoProvider::GetFrame"));
wxMutexLocker lock(AviSynthMutex);
PVideoFrame frame = RGB32Video->GetFrame(n,env);
int Bpp = vi.BitsPerPixel() / 8;
// Aegisub's video frame
AegiVideoFrame &final = iframe;
final.format = FORMAT_RGB32;
final.flipped = true;
final.invertChannels = true;
// Set size properties
final.pitch[0] = frame->GetPitch();
final.w = frame->GetRowSize() / Bpp;
final.h = frame->GetHeight();
// Allocate
final.Allocate();
// Copy
memcpy(final.data[0],frame->GetReadPtr(),final.pitch[0] * final.h);
// Set last number
last_fnum = n;
return final;
}
/// @brief Get warning
///
wxString AvisynthVideoProvider::GetWarning() const {
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!";
else return L"";
}
#endif