/// @brief Checks if the file is an YUV4MPEG file or not
/// Note that it reports the error by throwing an exception,
/// not by returning a false value.
void YUV4MPEGVideoProvider::CheckFileFormat() {
char buf[10];
if (fread(buf, 10, 1, sf) != 1)
throw VideoNotSupported("CheckFileFormat: Failed reading header");
if (strncmp("YUV4MPEG2 ", buf, 10))
throw VideoNotSupported("CheckFileFormat: File is not a YUV4MPEG file (bad magic)");
fseeko(sf, 0, SEEK_SET);
}
/// @brief Get provider
/// @param video
/// @return
///
VideoProvider *VideoProviderFactory::GetProvider(std::string video) {
//XXX std::vector<std::string> list = GetClasses(OPT_GET("Video/Provider")->GetString());
std::vector<std::string> list = GetClasses("ffmpegsource");
if (video.find("?dummy") == 0) list.insert(list.begin(), "Dummy");
list.insert(list.begin(), "YUV4MPEG");
bool fileFound = false;
bool fileSupported = false;
std::string errors;
errors.reserve(1024);
for (int i = 0; i < (signed)list.size(); ++i) {
std::string err;
try {
VideoProvider *provider = Create(list[i], video);
LOG_I("manager/video/provider") << list[i] << ": opened " << video;
if (provider->WantsCaching()) {
return new VideoProviderCache(provider);
}
return provider;
}
catch (agi::FileNotFoundError const&) {
err = list[i] + ": file not found.";
// Keep trying other providers as this one may just not be able to
// open a valid path
}
catch (VideoNotSupported const&) {
fileFound = true;
err = list[i] + ": video is not in a supported format.";
}
catch (VideoOpenError const& ex) {
fileSupported = true;
err = list[i] + ": " + ex.GetMessage();
}
catch (agi::vfr::Error const& ex) {
fileSupported = true;
err = list[i] + ": " + ex.GetMessage();
}
errors += err;
errors += "\n";
LOG_D("manager/video/provider") << err;
}
// No provider could open the file
LOG_E("manager/video/provider") << "Could not open " << video;
std::string msg = "Could not open " + video + ":\n" + errors;
if (!fileFound) throw agi::FileNotFoundError(video);
if (!fileSupported) throw VideoNotSupported(msg);
throw VideoOpenError(msg);
}
/// @brief Get provider
/// @param video
/// @return
///
VideoProvider *VideoProviderFactory::GetProvider(wxString video) {
std::vector<std::string> list = GetClasses(OPT_GET("Video/Provider")->GetString());
if (video.StartsWith("?dummy")) list.insert(list.begin(), "Dummy");
list.insert(list.begin(), "YUV4MPEG");
bool fileFound = false;
bool fileSupported = false;
std::string errors;
errors.reserve(1024);
for (auto const& factory : list) {
std::string err;
try {
VideoProvider *provider = Create(factory, video);
LOG_I("manager/video/provider") << factory << ": opened " << from_wx(video);
if (provider->WantsCaching()) {
return new VideoProviderCache(provider);
}
return provider;
}
catch (agi::FileNotFoundError const&) {
err = factory + ": file not found.";
// Keep trying other providers as this one may just not be able to
// open a valid path
}
catch (VideoNotSupported const&) {
fileFound = true;
err = factory + ": video is not in a supported format.";
}
catch (VideoOpenError const& ex) {
fileSupported = true;
err = factory + ": " + ex.GetMessage();
}
catch (agi::vfr::Error const& ex) {
fileSupported = true;
err = factory + ": " + ex.GetMessage();
}
errors += err;
errors += "\n";
LOG_D("manager/video/provider") << err;
}
// No provider could open the file
LOG_E("manager/video/provider") << "Could not open " << from_wx(video);
std::string msg = "Could not open " + from_wx(video) + ":\n" + errors;
if (!fileFound) throw agi::FileNotFoundError(from_wx(video));
if (!fileSupported) throw VideoNotSupported(msg);
throw VideoOpenError(msg);
}
std::unique_ptr<VideoProvider> VideoProviderFactory::GetProvider(agi::fs::path const& video_file, std::string const& colormatrix) {
std::vector<std::string> factories = GetClasses(OPT_GET("Video/Provider")->GetString());
factories.insert(factories.begin(), "YUV4MPEG");
factories.insert(factories.begin(), "Dummy");
bool found = false;
bool supported = false;
std::string errors;
errors.reserve(1024);
for (auto const& factory : factories) {
std::string err;
try {
auto provider = Create(factory, video_file, colormatrix);
LOG_I("manager/video/provider") << factory << ": opened " << video_file;
return provider->WantsCaching() ? agi::util::make_unique<VideoProviderCache>(std::move(provider)) : std::move(provider);
}
catch (agi::fs::FileNotFound const&) {
err = "file not found.";
// Keep trying other providers as this one may just not be able to
// open a valid path
}
catch (VideoNotSupported const&) {
found = true;
err = "video is not in a supported format.";
}
catch (VideoOpenError const& ex) {
supported = true;
err = ex.GetMessage();
}
catch (agi::vfr::Error const& ex) {
supported = true;
err = ex.GetMessage();
}
errors += factory + ": " + err + "\n";
LOG_D("manager/video/provider") << factory << ": " << err;
}
// No provider could open the file
LOG_E("manager/video/provider") << "Could not open " << video_file;
std::string msg = "Could not open " + video_file.string() + ":\n" + errors;
if (!found) throw agi::fs::FileNotFound(video_file.string());
if (!supported) throw VideoNotSupported(msg);
throw VideoOpenError(msg);
}
std::unique_ptr<VideoProvider> VideoProviderFactory::GetProvider(agi::fs::path const& filename, std::string const& colormatrix, agi::BackgroundRunner *br) {
auto preferred = OPT_GET("Video/Provider")->GetString();
auto sorted = GetSorted(boost::make_iterator_range(std::begin(providers), std::end(providers)), preferred);
bool found = false;
bool supported = false;
std::string errors;
errors.reserve(1024);
for (auto factory : sorted) {
std::string err;
try {
auto provider = factory->create(filename, colormatrix, br);
if (!provider) continue;
LOG_I("manager/video/provider") << factory->name << ": opened " << filename;
return provider->WantsCaching() ? CreateCacheVideoProvider(std::move(provider)) : std::move(provider);
}
catch (agi::fs::FileNotFound const&) {
err = "file not found.";
// Keep trying other providers as this one may just not be able to
// open a valid path
}
catch (VideoNotSupported const&) {
found = true;
err = "video is not in a supported format.";
}
catch (VideoOpenError const& ex) {
supported = true;
err = ex.GetMessage();
}
catch (agi::vfr::Error const& ex) {
supported = true;
err = ex.GetMessage();
}
errors += std::string(factory->name) + ": " + err + "\n";
LOG_D("manager/video/provider") << factory->name << ": " << err;
}
// No provider could open the file
LOG_E("manager/video/provider") << "Could not open " << filename;
std::string msg = "Could not open " + filename.string() + ":\n" + errors;
if (!found) throw agi::fs::FileNotFound(filename.string());
if (!supported) throw VideoNotSupported(msg);
throw VideoOpenError(msg);
}
AvisynthVideoProvider::AvisynthVideoProvider(agi::fs::path const& filename, std::string const& colormatrix)
{
agi::acs::CheckFileRead(filename);
std::lock_guard<std::mutex> lock(avs.GetMutex());
#ifdef _WIN32
if (agi::fs::HasExtension(filename, "avi")) {
// Try to read the keyframes before actually opening the file as trying
// to open the file while it's already open can cause problems with
// badly written VFW decoders
AVIFileInit();
PAVIFILE pfile;
long hr = AVIFileOpen(&pfile, filename.c_str(), OF_SHARE_DENY_WRITE, 0);
if (hr) {
warning = "Unable to open AVI file for reading keyframes:\n";
switch (hr) {
case AVIERR_BADFORMAT:
warning += "The file is corrupted, incomplete or has an otherwise bad format.";
break;
case AVIERR_MEMORY:
warning += "The file could not be opened because of insufficient memory.";
break;
case AVIERR_FILEREAD:
warning += "An error occurred reading the file. There might be a problem with the storage media.";
break;
case AVIERR_FILEOPEN:
warning += "The file could not be opened. It might be in use by another application, or you do not have permission to access it.";
break;
case REGDB_E_CLASSNOTREG:
warning += "There is no handler installed for the file extension. This might indicate a fundamental problem in your Video for Windows installation, and can be caused by extremely stripped Windows installations.";
break;
default:
warning += "Unknown error.";
break;
}
goto file_exit;
}
PAVISTREAM ppavi;
if (hr = AVIFileGetStream(pfile, &ppavi, streamtypeVIDEO, 0)) {
warning = "Unable to open AVI video stream for reading keyframes:\n";
switch (hr) {
case AVIERR_NODATA:
warning += "The file does not contain a usable video stream.";
break;
case AVIERR_MEMORY:
warning += "Not enough memory.";
break;
default:
warning += "Unknown error.";
break;
}
goto file_release;
}
AVISTREAMINFO avis;
if (FAILED(AVIStreamInfo(ppavi,&avis,sizeof(avis)))) {
warning = "Unable to read keyframes from AVI file:\nCould not get stream information.";
goto stream_release;
}
for (size_t i = 0; i < avis.dwLength; i++) {
if (AVIStreamIsKeyFrame(ppavi, i))
keyframes.push_back(i);
}
// If every frame is a keyframe then just discard the keyframe data as it's useless
if (keyframes.size() == (size_t)avis.dwLength)
keyframes.clear();
// Clean up
stream_release:
AVIStreamRelease(ppavi);
file_release:
AVIFileRelease(pfile);
file_exit:
AVIFileExit();
}
#endif
try {
auto script = Open(filename);
// Check if video was loaded properly
if (!script.IsClip() || !script.AsClip()->GetVideoInfo().HasVideo())
throw VideoNotSupported("No usable video found");
vi = script.AsClip()->GetVideoInfo();
if (!vi.IsRGB()) {
/// @todo maybe read ColorMatrix hints for d2v files?
AVSValue args[2] = { script, "Rec601" };
bool force_bt601 = OPT_GET("Video/Force BT.601")->GetBool() || colormatrix == "TV.601";
bool bt709 = vi.width > 1024 || vi.height >= 600;
if (bt709 && (!force_bt601 || colormatrix == "TV.709")) {
args[1] = "Rec709";
colorspace = "TV.709";
}
else
colorspace = "TV.601";
const char *argnames[2] = { 0, "matrix" };
script = avs.GetEnv()->Invoke("ConvertToRGB32", AVSValue(args, 2), argnames);
}
else
colorspace = "None";
RGB32Video = avs.GetEnv()->Invoke("Cache", script).AsClip();
vi = RGB32Video->GetVideoInfo();
fps = (double)vi.fps_numerator / vi.fps_denominator;
}
catch (AvisynthError const& err) {
throw VideoOpenError("Avisynth error: " + std::string(err.msg));
}
}
AVSValue AvisynthVideoProvider::Open(agi::fs::path const& filename) {
IScriptEnvironment *env = avs.GetEnv();
char *videoFilename = env->SaveString(agi::fs::ShortName(filename).c_str());
// Avisynth file, just import it
if (agi::fs::HasExtension(filename, "avs")) {
LOG_I("avisynth/video") << "Opening .avs file with Import";
decoder_name = "Avisynth/Import";
return env->Invoke("Import", videoFilename);
}
// Open avi file with AviSource
if (agi::fs::HasExtension(filename, "avi")) {
LOG_I("avisynth/video") << "Opening .avi file with AviSource";
try {
const char *argnames[2] = { 0, "audio" };
AVSValue args[2] = { videoFilename, false };
decoder_name = "Avisynth/AviSource";
return env->Invoke("AviSource", AVSValue(args,2), argnames);
}
// On Failure, fallback to DSS
catch (AvisynthError &err) {
LOG_E("avisynth/video") << err.msg;
LOG_I("avisynth/video") << "Failed to open .avi file with AviSource, trying DirectShowSource";
}
}
// Open d2v with mpeg2dec3
if (agi::fs::HasExtension(filename, "d2v") && env->FunctionExists("Mpeg2Dec3_Mpeg2Source")) {
LOG_I("avisynth/video") << "Opening .d2v file with Mpeg2Dec3_Mpeg2Source";
auto script = env->Invoke("Mpeg2Dec3_Mpeg2Source", videoFilename);
decoder_name = "Avisynth/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));
}
return script;
}
// If that fails, try opening it with DGDecode
if (agi::fs::HasExtension(filename, "d2v") && env->FunctionExists("DGDecode_Mpeg2Source")) {
LOG_I("avisynth/video") << "Opening .d2v file with DGDecode_Mpeg2Source";
decoder_name = "DGDecode_Mpeg2Source";
return env->Invoke("Avisynth/Mpeg2Source", videoFilename);
//note that DGDecode will also have issues like if the version is too
// ancient but no sane person would use that anyway
}
if (agi::fs::HasExtension(filename, "d2v") && env->FunctionExists("Mpeg2Source")) {
LOG_I("avisynth/video") << "Opening .d2v file with other Mpeg2Source";
AVSValue script = env->Invoke("Mpeg2Source", videoFilename);
decoder_name = "Avisynth/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);
return script;
}
// Try loading DirectShowSource2
if (!env->FunctionExists("dss2")) {
auto dss2path(config::path->Decode("?data/avss.dll"));
if (agi::fs::FileExists(dss2path))
env->Invoke("LoadPlugin", env->SaveString(agi::fs::ShortName(dss2path).c_str()));
}
// If DSS2 loaded properly, try using it
if (env->FunctionExists("dss2")) {
LOG_I("avisynth/video") << "Opening file with DSS2";
decoder_name = "Avisynth/DSS2";
return env->Invoke("DSS2", videoFilename);
}
// Try DirectShowSource
// Load DirectShowSource.dll from app dir if it exists
auto dsspath(config::path->Decode("?data/DirectShowSource.dll"));
if (agi::fs::FileExists(dsspath))
env->Invoke("LoadPlugin", env->SaveString(agi::fs::ShortName(dsspath).c_str()));
// Then try using DSS
if (env->FunctionExists("DirectShowSource")) {
const char *argnames[3] = { 0, "video", "audio" };
AVSValue args[3] = { videoFilename, true, false };
decoder_name = "Avisynth/DirectShowSource";
warning = "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!";
LOG_I("avisynth/video") << "Opening file with DirectShowSource";
return env->Invoke("DirectShowSource", AVSValue(args,3), argnames);
}
// Failed to find a suitable function
LOG_E("avisynth/video") << "DSS function not found";
throw VideoNotSupported("No function suitable for opening the video found");
}
/// @brief Opens video
/// @param filename The filename to open
void FFmpegSourceVideoProvider::LoadVideo(wxString filename) {
wxString FileNameShort = wxFileName(filename).GetShortPath();
FFMS_Indexer *Indexer = FFMS_CreateIndexer(FileNameShort.utf8_str(), &ErrInfo);
if (Indexer == NULL) {
throw agi::FileNotFoundError(ErrInfo.Buffer);
}
std::map<int,wxString> TrackList = GetTracksOfType(Indexer, FFMS_TYPE_VIDEO);
if (TrackList.size() <= 0)
throw VideoNotSupported("no video tracks found");
// initialize the track number to an invalid value so we can detect later on
// whether the user actually had to choose a track or not
int TrackNumber = -1;
if (TrackList.size() > 1) {
TrackNumber = AskForTrackSelection(TrackList, FFMS_TYPE_VIDEO);
// if it's still -1 here, user pressed cancel
if (TrackNumber == -1)
throw agi::UserCancelException("video loading cancelled by user");
}
// generate a name for the cache file
wxString CacheName = GetCacheFilename(filename);
// try to read index
FFMS_Index *Index = NULL;
Index = FFMS_ReadIndex(CacheName.utf8_str(), &ErrInfo);
bool IndexIsValid = false;
if (Index != NULL) {
if (FFMS_IndexBelongsToFile(Index, FileNameShort.utf8_str(), &ErrInfo)) {
FFMS_DestroyIndex(Index);
Index = NULL;
}
else
IndexIsValid = true;
}
// time to examine the index and check if the track we want is indexed
// technically this isn't really needed since all video tracks should always be indexed,
// but a bit of sanity checking never hurt anyone
if (IndexIsValid && TrackNumber >= 0) {
FFMS_Track *TempTrackData = FFMS_GetTrackFromIndex(Index, TrackNumber);
if (FFMS_GetNumFrames(TempTrackData) <= 0) {
IndexIsValid = false;
FFMS_DestroyIndex(Index);
Index = NULL;
}
}
// moment of truth
if (!IndexIsValid) {
int TrackMask = OPT_GET("Provider/FFmpegSource/Index All Tracks")->GetBool() ? FFMS_TRACKMASK_ALL : FFMS_TRACKMASK_NONE;
try {
// ignore audio decoding errors here, we don't care right now
Index = DoIndexing(Indexer, CacheName, TrackMask, FFMS_IEH_IGNORE);
}
catch (wxString err) {
throw VideoOpenError(STD_STR(err));
}
}
// update access time of index file so it won't get cleaned away
wxFileName(CacheName).Touch();
// we have now read the index and may proceed with cleaning the index cache
if (!CleanCache()) {
//do something?
}
// track number still not set?
if (TrackNumber < 0) {
// just grab the first track
TrackNumber = FFMS_GetFirstIndexedTrackOfType(Index, FFMS_TYPE_VIDEO, &ErrInfo);
if (TrackNumber < 0) {
FFMS_DestroyIndex(Index);
Index = NULL;
throw VideoNotSupported(std::string("Couldn't find any video tracks: ") + ErrInfo.Buffer);
}
}
// set thread count
int Threads = OPT_GET("Provider/Video/FFmpegSource/Decoding Threads")->GetInt();
// set seekmode
// TODO: give this its own option?
int SeekMode;
if (OPT_GET("Provider/Video/FFmpegSource/Unsafe Seeking")->GetBool())
SeekMode = FFMS_SEEK_UNSAFE;
else
SeekMode = FFMS_SEEK_NORMAL;
VideoSource = FFMS_CreateVideoSource(FileNameShort.utf8_str(), TrackNumber, Index, Threads, SeekMode, &ErrInfo);
FFMS_DestroyIndex(Index);
Index = NULL;
if (VideoSource == NULL) {
throw VideoOpenError(std::string("Failed to open video track: ") + ErrInfo.Buffer);
}
// load video properties
VideoInfo = FFMS_GetVideoProperties(VideoSource);
const FFMS_Frame *TempFrame = FFMS_GetFrame(VideoSource, 0, &ErrInfo);
if (TempFrame == NULL) {
throw VideoOpenError(std::string("Failed to decode first frame: ") + ErrInfo.Buffer);
}
Width = TempFrame->EncodedWidth;
Height = TempFrame->EncodedHeight;
if (FFMS_SetOutputFormatV(VideoSource, 1LL << FFMS_GetPixFmt("bgra"), Width, Height, FFMS_RESIZER_BICUBIC, &ErrInfo)) {
throw VideoOpenError(std::string("Failed to set output format: ") + ErrInfo.Buffer);
}
// get frame info data
FFMS_Track *FrameData = FFMS_GetTrackFromVideo(VideoSource);
if (FrameData == NULL)
throw VideoOpenError("failed to get frame data");
const FFMS_TrackTimeBase *TimeBase = FFMS_GetTimeBase(FrameData);
if (TimeBase == NULL)
throw VideoOpenError("failed to get track time base");
const FFMS_FrameInfo *CurFrameData;
// build list of keyframes and timecodes
std::vector<int> TimecodesVector;
for (int CurFrameNum = 0; CurFrameNum < VideoInfo->NumFrames; CurFrameNum++) {
CurFrameData = FFMS_GetFrameInfo(FrameData, CurFrameNum);
if (CurFrameData == NULL) {
throw VideoOpenError(STD_STR(wxString::Format(L"Couldn't get info about frame %d", CurFrameNum)));
}
// keyframe?
if (CurFrameData->KeyFrame)
KeyFramesList.push_back(CurFrameNum);
// calculate timestamp and add to timecodes vector
int Timestamp = (int)((CurFrameData->PTS * TimeBase->Num) / TimeBase->Den);
TimecodesVector.push_back(Timestamp);
}
Timecodes = agi::vfr::Framerate(TimecodesVector);
FrameNumber = 0;
}
/// @brief Opens video
/// @param filename The filename to open
void FFmpegSourceVideoProvider::LoadVideo(wxString filename) {
wxString FileNameShort = wxFileName(filename).GetShortPath();
FFMS_Indexer *Indexer = FFMS_CreateIndexer(FileNameShort.utf8_str(), &ErrInfo);
if (!Indexer)
throw agi::FileNotFoundError(ErrInfo.Buffer);
std::map<int,wxString> TrackList = GetTracksOfType(Indexer, FFMS_TYPE_VIDEO);
if (TrackList.size() <= 0)
throw VideoNotSupported("no video tracks found");
// initialize the track number to an invalid value so we can detect later on
// whether the user actually had to choose a track or not
int TrackNumber = -1;
if (TrackList.size() > 1) {
TrackNumber = AskForTrackSelection(TrackList, FFMS_TYPE_VIDEO);
// if it's still -1 here, user pressed cancel
if (TrackNumber == -1)
throw agi::UserCancelException("video loading cancelled by user");
}
// generate a name for the cache file
wxString CacheName = GetCacheFilename(filename);
// try to read index
agi::scoped_holder<FFMS_Index*, void (FFMS_CC*)(FFMS_Index*)>
Index(FFMS_ReadIndex(CacheName.utf8_str(), &ErrInfo), FFMS_DestroyIndex);
if (Index && FFMS_IndexBelongsToFile(Index, FileNameShort.utf8_str(), &ErrInfo))
Index = NULL;
// time to examine the index and check if the track we want is indexed
// technically this isn't really needed since all video tracks should always be indexed,
// but a bit of sanity checking never hurt anyone
if (Index && TrackNumber >= 0) {
FFMS_Track *TempTrackData = FFMS_GetTrackFromIndex(Index, TrackNumber);
if (FFMS_GetNumFrames(TempTrackData) <= 0)
Index = NULL;
}
// moment of truth
if (!Index) {
int TrackMask = FFMS_TRACKMASK_NONE;
if (OPT_GET("Provider/FFmpegSource/Index All Tracks")->GetBool() || OPT_GET("Video/Open Audio")->GetBool())
TrackMask = FFMS_TRACKMASK_ALL;
Index = DoIndexing(Indexer, CacheName, TrackMask, GetErrorHandlingMode());
}
else {
FFMS_CancelIndexing(Indexer);
}
// update access time of index file so it won't get cleaned away
wxFileName(CacheName).Touch();
// we have now read the index and may proceed with cleaning the index cache
CleanCache();
// track number still not set?
if (TrackNumber < 0) {
// just grab the first track
TrackNumber = FFMS_GetFirstIndexedTrackOfType(Index, FFMS_TYPE_VIDEO, &ErrInfo);
if (TrackNumber < 0)
throw VideoNotSupported(std::string("Couldn't find any video tracks: ") + ErrInfo.Buffer);
}
// set thread count
int Threads = OPT_GET("Provider/Video/FFmpegSource/Decoding Threads")->GetInt();
if (FFMS_GetVersion() < ((2 << 24) | (17 << 16) | (2 << 8) | 1) && FFMS_GetSourceType(Index) == FFMS_SOURCE_LAVF)
Threads = 1;
// set seekmode
// TODO: give this its own option?
int SeekMode;
if (OPT_GET("Provider/Video/FFmpegSource/Unsafe Seeking")->GetBool())
SeekMode = FFMS_SEEK_UNSAFE;
else
SeekMode = FFMS_SEEK_NORMAL;
VideoSource = FFMS_CreateVideoSource(FileNameShort.utf8_str(), TrackNumber, Index, Threads, SeekMode, &ErrInfo);
if (!VideoSource)
throw VideoOpenError(std::string("Failed to open video track: ") + ErrInfo.Buffer);
// load video properties
VideoInfo = FFMS_GetVideoProperties(VideoSource);
const FFMS_Frame *TempFrame = FFMS_GetFrame(VideoSource, 0, &ErrInfo);
if (!TempFrame)
throw VideoOpenError(std::string("Failed to decode first frame: ") + ErrInfo.Buffer);
Width = TempFrame->EncodedWidth;
Height = TempFrame->EncodedHeight;
if (VideoInfo->SARDen > 0 && VideoInfo->SARNum > 0)
DAR = double(Width) * VideoInfo->SARNum / ((double)Height * VideoInfo->SARDen);
else
DAR = double(Width) / Height;
// Assuming TV for unspecified
wxString ColorRange = TempFrame->ColorRange == FFMS_CR_JPEG ? "PC" : "TV";
int CS = TempFrame->ColorSpace;
#if FFMS_VERSION >= ((2 << 24) | (17 << 16) | (1 << 8) | 0)
if (CS != FFMS_CS_RGB && CS != FFMS_CS_BT470BG && OPT_GET("Video/Force BT.601")->GetBool()) {
if (FFMS_SetInputFormatV(VideoSource, FFMS_CS_BT470BG, TempFrame->ColorRange, FFMS_GetPixFmt(""), &ErrInfo))
throw VideoOpenError(std::string("Failed to set input format: ") + ErrInfo.Buffer);
CS = FFMS_CS_BT470BG;
}
#endif
switch (CS) {
case FFMS_CS_RGB:
ColorSpace = "None";
break;
case FFMS_CS_BT709:
ColorSpace = wxString::Format("%s.709", ColorRange);
break;
case FFMS_CS_UNSPECIFIED:
ColorSpace = wxString::Format("%s.%s", ColorRange, Width > 1024 || Height >= 600 ? "709" : "601");
break;
case FFMS_CS_FCC:
ColorSpace = wxString::Format("%s.FCC", ColorRange);
break;
case FFMS_CS_BT470BG:
case FFMS_CS_SMPTE170M:
ColorSpace = wxString::Format("%s.601", ColorRange);
break;
case FFMS_CS_SMPTE240M:
ColorSpace = wxString::Format("%s.240M", ColorRange);
break;
default:
throw VideoOpenError("Unknown video color space");
break;
}
const int TargetFormat[] = { FFMS_GetPixFmt("bgra"), -1 };
if (FFMS_SetOutputFormatV2(VideoSource, TargetFormat, Width, Height, FFMS_RESIZER_BICUBIC, &ErrInfo)) {
throw VideoOpenError(std::string("Failed to set output format: ") + ErrInfo.Buffer);
}
// get frame info data
FFMS_Track *FrameData = FFMS_GetTrackFromVideo(VideoSource);
if (FrameData == NULL)
throw VideoOpenError("failed to get frame data");
const FFMS_TrackTimeBase *TimeBase = FFMS_GetTimeBase(FrameData);
if (TimeBase == NULL)
throw VideoOpenError("failed to get track time base");
const FFMS_FrameInfo *CurFrameData;
// build list of keyframes and timecodes
std::vector<int> TimecodesVector;
for (int CurFrameNum = 0; CurFrameNum < VideoInfo->NumFrames; CurFrameNum++) {
CurFrameData = FFMS_GetFrameInfo(FrameData, CurFrameNum);
if (CurFrameData == NULL) {
throw VideoOpenError(STD_STR(wxString::Format("Couldn't get info about frame %d", CurFrameNum)));
}
// keyframe?
if (CurFrameData->KeyFrame)
KeyFramesList.push_back(CurFrameNum);
// calculate timestamp and add to timecodes vector
int Timestamp = (int)((CurFrameData->PTS * TimeBase->Num) / TimeBase->Den);
TimecodesVector.push_back(Timestamp);
}
if (TimecodesVector.size() < 2)
Timecodes = 25.0;
else
Timecodes = agi::vfr::Framerate(TimecodesVector);
FrameNumber = 0;
}
