forked from mia/Aegisub
c10e9e3a5b
Don't display error messages and try other providers when the user cancels loading a file. Remove files from the MRU lists if they can't be found. Closes #717. Originally committed to SVN as r4717.
291 lines
8.6 KiB
C++
291 lines
8.6 KiB
C++
// Copyright (c) 2008-2009, Karl Blomster
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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_ffmpegsource.cpp
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/// @brief FFmpegSource2-based video provider
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/// @ingroup video_input ffms
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///
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#include "config.h"
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#ifdef WITH_FFMPEGSOURCE
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#ifndef AGI_PRE
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#ifdef __WINDOWS__
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#include <objbase.h>
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#endif
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#include <map>
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#include <wx/choicdlg.h>
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#include <wx/msgdlg.h>
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#include <wx/utils.h>
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#endif
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#include "aegisub_endian.h"
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#include "compat.h"
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#include "main.h"
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#include "video_context.h"
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#include "video_provider_ffmpegsource.h"
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/// @brief Constructor
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/// @param filename The filename to open
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FFmpegSourceVideoProvider::FFmpegSourceVideoProvider(wxString filename)
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: VideoSource(NULL)
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, VideoInfo(NULL)
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, Width(-1)
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, Height(-1)
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, FrameNumber(-1)
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, COMInited(false)
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{
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#ifdef WIN32
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HRESULT res = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);
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if (SUCCEEDED(res))
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COMInited = true;
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else if (res != RPC_E_CHANGED_MODE)
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throw VideoOpenError("COM initialization failure");
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#endif
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// initialize ffmpegsource
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// FIXME: CPU detection?
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FFMS_Init(0);
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ErrInfo.Buffer = FFMSErrMsg;
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ErrInfo.BufferSize = sizeof(FFMSErrMsg);
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ErrInfo.ErrorType = FFMS_ERROR_SUCCESS;
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ErrInfo.SubType = FFMS_ERROR_SUCCESS;
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SetLogLevel();
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// and here we go
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try {
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LoadVideo(filename);
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}
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catch (wxString const& err) {
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Close();
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throw VideoOpenError(STD_STR(err));
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}
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catch (...) {
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Close();
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throw;
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}
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}
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/// @brief Destructor
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FFmpegSourceVideoProvider::~FFmpegSourceVideoProvider() {
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Close();
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}
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/// @brief Opens video
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/// @param filename The filename to open
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void FFmpegSourceVideoProvider::LoadVideo(wxString filename) {
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wxString FileNameShort = wxFileName(filename).GetShortPath();
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FFMS_Indexer *Indexer = FFMS_CreateIndexer(FileNameShort.utf8_str(), &ErrInfo);
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if (Indexer == NULL) {
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throw agi::FileNotFoundError(ErrInfo.Buffer);
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}
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std::map<int,wxString> TrackList = GetTracksOfType(Indexer, FFMS_TYPE_VIDEO);
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if (TrackList.size() <= 0)
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throw VideoNotSupported("no video tracks found");
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// initialize the track number to an invalid value so we can detect later on
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// whether the user actually had to choose a track or not
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int TrackNumber = -1;
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if (TrackList.size() > 1) {
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TrackNumber = AskForTrackSelection(TrackList, FFMS_TYPE_VIDEO);
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// if it's still -1 here, user pressed cancel
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if (TrackNumber == -1)
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throw agi::UserCancelException("video loading cancelled by user");
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}
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// generate a name for the cache file
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wxString CacheName = GetCacheFilename(filename);
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// try to read index
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FFMS_Index *Index = NULL;
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Index = FFMS_ReadIndex(CacheName.utf8_str(), &ErrInfo);
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bool IndexIsValid = false;
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if (Index != NULL) {
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if (FFMS_IndexBelongsToFile(Index, FileNameShort.utf8_str(), &ErrInfo)) {
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FFMS_DestroyIndex(Index);
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Index = NULL;
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}
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else
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IndexIsValid = true;
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}
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// time to examine the index and check if the track we want is indexed
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// technically this isn't really needed since all video tracks should always be indexed,
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// but a bit of sanity checking never hurt anyone
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if (IndexIsValid && TrackNumber >= 0) {
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FFMS_Track *TempTrackData = FFMS_GetTrackFromIndex(Index, TrackNumber);
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if (FFMS_GetNumFrames(TempTrackData) <= 0) {
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IndexIsValid = false;
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FFMS_DestroyIndex(Index);
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Index = NULL;
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}
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}
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// moment of truth
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if (!IndexIsValid) {
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int TrackMask = OPT_GET("Provider/FFmpegSource/Index All Tracks")->GetBool() ? FFMS_TRACKMASK_ALL : FFMS_TRACKMASK_NONE;
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try {
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// ignore audio decoding errors here, we don't care right now
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Index = DoIndexing(Indexer, CacheName, TrackMask, FFMS_IEH_IGNORE);
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}
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catch (wxString err) {
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throw VideoOpenError(STD_STR(err));
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}
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}
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// update access time of index file so it won't get cleaned away
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wxFileName(CacheName).Touch();
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// we have now read the index and may proceed with cleaning the index cache
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if (!CleanCache()) {
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//do something?
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}
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// track number still not set?
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if (TrackNumber < 0) {
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// just grab the first track
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TrackNumber = FFMS_GetFirstIndexedTrackOfType(Index, FFMS_TYPE_VIDEO, &ErrInfo);
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if (TrackNumber < 0) {
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FFMS_DestroyIndex(Index);
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Index = NULL;
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throw VideoNotSupported(std::string("Couldn't find any video tracks: ") + ErrInfo.Buffer);
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}
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}
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// set thread count
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int Threads = OPT_GET("Provider/Video/FFmpegSource/Decoding Threads")->GetInt();
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if (Threads < 1)
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throw VideoOpenError("invalid decoding thread count");
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// set seekmode
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// TODO: give this its own option?
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int SeekMode;
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if (OPT_GET("Provider/Video/FFmpegSource/Unsafe Seeking")->GetBool())
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SeekMode = FFMS_SEEK_UNSAFE;
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else
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SeekMode = FFMS_SEEK_NORMAL;
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VideoSource = FFMS_CreateVideoSource(FileNameShort.utf8_str(), TrackNumber, Index, Threads, SeekMode, &ErrInfo);
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FFMS_DestroyIndex(Index);
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Index = NULL;
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if (VideoSource == NULL) {
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throw VideoOpenError(std::string("Failed to open video track: ") + ErrInfo.Buffer);
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}
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// load video properties
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VideoInfo = FFMS_GetVideoProperties(VideoSource);
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const FFMS_Frame *TempFrame = FFMS_GetFrame(VideoSource, 0, &ErrInfo);
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if (TempFrame == NULL) {
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throw VideoOpenError(std::string("Failed to decode first frame: ") + ErrInfo.Buffer);
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}
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Width = TempFrame->EncodedWidth;
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Height = TempFrame->EncodedHeight;
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if (FFMS_SetOutputFormatV(VideoSource, 1LL << FFMS_GetPixFmt("bgra"), Width, Height, FFMS_RESIZER_BICUBIC, &ErrInfo)) {
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throw VideoOpenError(std::string("Failed to set output format: ") + ErrInfo.Buffer);
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}
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// get frame info data
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FFMS_Track *FrameData = FFMS_GetTrackFromVideo(VideoSource);
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if (FrameData == NULL)
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throw VideoOpenError("failed to get frame data");
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const FFMS_TrackTimeBase *TimeBase = FFMS_GetTimeBase(FrameData);
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if (TimeBase == NULL)
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throw VideoOpenError("failed to get track time base");
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const FFMS_FrameInfo *CurFrameData;
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// build list of keyframes and timecodes
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std::vector<int> TimecodesVector;
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for (int CurFrameNum = 0; CurFrameNum < VideoInfo->NumFrames; CurFrameNum++) {
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CurFrameData = FFMS_GetFrameInfo(FrameData, CurFrameNum);
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if (CurFrameData == NULL) {
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throw VideoOpenError(STD_STR(wxString::Format(L"Couldn't get info about frame %d", CurFrameNum)));
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}
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// keyframe?
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if (CurFrameData->KeyFrame)
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KeyFramesList.push_back(CurFrameNum);
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// calculate timestamp and add to timecodes vector
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int Timestamp = (int)((CurFrameData->PTS * TimeBase->Num) / TimeBase->Den);
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TimecodesVector.push_back(Timestamp);
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}
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Timecodes = agi::vfr::Framerate(TimecodesVector);
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FrameNumber = 0;
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}
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/// @brief Close video
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///
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void FFmpegSourceVideoProvider::Close() {
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if (VideoSource) FFMS_DestroyVideoSource(VideoSource);
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#ifdef WIN32
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if (COMInited)
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CoUninitialize();
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#endif
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}
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/// @brief Get frame
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/// @param _n
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/// @return
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///
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const AegiVideoFrame FFmpegSourceVideoProvider::GetFrame(int _n) {
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// don't try to seek to insane places
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int n = _n;
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if (n < 0)
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n = 0;
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if (n >= GetFrameCount())
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n = GetFrameCount()-1;
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// set position
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FrameNumber = n;
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// decode frame
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const FFMS_Frame *SrcFrame = FFMS_GetFrame(VideoSource, n, &ErrInfo);
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if (SrcFrame == NULL) {
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throw VideoDecodeError(std::string("Failed to retrieve frame:") + ErrInfo.Buffer);
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}
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CurFrame.SetTo(SrcFrame->Data, Width, Height, SrcFrame->Linesize, FORMAT_RGB32);
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return CurFrame;
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}
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#endif /* WITH_FFMPEGSOURCE */
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