forked from mia/Aegisub
828 lines
25 KiB
C++
828 lines
25 KiB
C++
// Copyright (c) 2007-2009 Fredrik Mellbin
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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#include <iostream>
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#include <fstream>
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#include <set>
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#include <algorithm>
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#include <memory>
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#include <errno.h>
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#include "indexing.h"
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#include "wave64writer.h"
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#ifdef __UNIX__
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#define _fseeki64 fseeko
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#define _ftelli64 ftello
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#define _snprintf snprintf
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#endif
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extern "C" {
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#include <libavformat/avformat.h>
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#include <libavcodec/avcodec.h>
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#include "MatroskaParser.h"
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#include "stdiostream.h"
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}
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#ifdef _WIN32
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# define _WIN32_DCOM
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# include <windows.h>
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# include <tchar.h>
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# include <atlbase.h>
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# include <dshow.h>
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# include "CoParser.h"
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# include <initguid.h>
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# include "guids.h"
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#endif
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class MatroskaAudioContext {
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public:
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Wave64Writer *W64W;
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AVCodecContext *CTX;
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CompressedStream *CS;
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int64_t CurrentSample;
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uint8_t *CodecPrivate;
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MatroskaAudioContext() {
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W64W = NULL;
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CTX = NULL;
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CS = NULL;
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CurrentSample = 0;
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CodecPrivate = NULL;
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}
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~MatroskaAudioContext() {
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delete[] CodecPrivate;
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delete W64W;
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if (CTX) {
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avcodec_close(CTX);
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av_free(CTX);
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}
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if (CS)
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cs_Destroy(CS);
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}
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};
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class FFAudioContext {
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public:
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Wave64Writer *W64W;
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AVCodecContext *CTX;
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int64_t CurrentSample;
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FFAudioContext() {
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W64W = NULL;
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CTX = NULL;
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CurrentSample = 0;
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}
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~FFAudioContext() {
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delete W64W;
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if (CTX)
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avcodec_close(CTX);
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}
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};
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#ifdef HAALISOURCE
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class HaaliIndexMemory {
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private:
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int16_t *DecodingBuffer;
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MatroskaAudioContext *AudioContexts;
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public:
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HaaliIndexMemory(int Tracks, int16_t *&DecodingBuffer, MatroskaAudioContext *&AudioContexts) {
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DecodingBuffer = new int16_t[AVCODEC_MAX_AUDIO_FRAME_SIZE*10];
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AudioContexts = new MatroskaAudioContext[Tracks];
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this->DecodingBuffer = DecodingBuffer;
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this->AudioContexts = AudioContexts;
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}
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~HaaliIndexMemory() {
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delete [] DecodingBuffer;
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delete [] AudioContexts;
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}
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};
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#endif
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class MatroskaIndexMemory {
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private:
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int16_t *DecodingBuffer;
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MatroskaAudioContext *AudioContexts;
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MatroskaFile *MF;
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MatroskaReaderContext *MC;
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public:
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MatroskaIndexMemory(int Tracks, int16_t *&DecodingBuffer, MatroskaAudioContext *&AudioContexts, MatroskaFile *MF, MatroskaReaderContext *MC) {
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DecodingBuffer = new int16_t[AVCODEC_MAX_AUDIO_FRAME_SIZE*10];
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AudioContexts = new MatroskaAudioContext[Tracks];
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this->DecodingBuffer = DecodingBuffer;
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this->AudioContexts = AudioContexts;
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this->MF = MF;
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this->MC = MC;
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}
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~MatroskaIndexMemory() {
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delete [] DecodingBuffer;
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delete [] AudioContexts;
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mkv_Close(MF);
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fclose(MC->ST.fp);
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}
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};
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class FFIndexMemory {
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private:
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int16_t *DecodingBuffer;
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FFAudioContext *AudioContexts;
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AVFormatContext *FormatContext;
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public:
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FFIndexMemory(int Tracks, int16_t *&DecodingBuffer, FFAudioContext *&AudioContexts, AVFormatContext *&FormatContext) {
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DecodingBuffer = new int16_t[AVCODEC_MAX_AUDIO_FRAME_SIZE*10];
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AudioContexts = new FFAudioContext[Tracks];
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this->DecodingBuffer = DecodingBuffer;
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this->AudioContexts = AudioContexts;
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this->FormatContext = FormatContext;
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}
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~FFIndexMemory() {
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delete [] DecodingBuffer;
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delete [] AudioContexts;
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av_close_input_file(FormatContext);
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}
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};
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static bool DTSComparison(TFrameInfo FI1, TFrameInfo FI2) {
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return FI1.DTS < FI2.DTS;
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}
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static void SortTrackIndices(FFIndex *Index) {
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for (FFIndex::iterator Cur=Index->begin(); Cur!=Index->end(); Cur++)
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std::sort(Cur->begin(), Cur->end(), DTSComparison);
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}
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int FFIndex::WriteIndex(const char *IndexFile, char *ErrorMsg, unsigned MsgSize) {
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std::ofstream IndexStream(IndexFile, std::ios::out | std::ios::binary | std::ios::trunc);
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if (!IndexStream.is_open()) {
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_snprintf(ErrorMsg, MsgSize, "Failed to open '%s' for writing", IndexFile);
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return 1;
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}
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// Write the index file header
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IndexHeader IH;
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IH.Id = INDEXID;
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IH.Version = INDEXVERSION;
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IH.Tracks = size();
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IH.Decoder = Decoder;
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IH.LAVUVersion = LIBAVUTIL_VERSION_INT;
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IH.LAVFVersion = LIBAVFORMAT_VERSION_INT;
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IH.LAVCVersion = LIBAVCODEC_VERSION_INT;
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IH.LSWSVersion = LIBSWSCALE_VERSION_INT;
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IH.LPPVersion = LIBPOSTPROC_VERSION_INT;
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IndexStream.write(reinterpret_cast<char *>(&IH), sizeof(IH));
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for (unsigned int i = 0; i < IH.Tracks; i++) {
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int TT = at(i).TT;
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IndexStream.write(reinterpret_cast<char *>(&TT), sizeof(TT));
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int64_t Num = at(i).TB.Num;
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IndexStream.write(reinterpret_cast<char *>(&Num), sizeof(Num));
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int64_t Den = at(i).TB.Den;
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IndexStream.write(reinterpret_cast<char *>(&Den), sizeof(Den));
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size_t Frames = at(i).size();
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IndexStream.write(reinterpret_cast<char *>(&Frames), sizeof(Frames));
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for (size_t j = 0; j < Frames; j++)
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IndexStream.write(reinterpret_cast<char *>(&(at(i)[j])), sizeof(TFrameInfo));
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}
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return 0;
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}
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#ifdef HAALISOURCE
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static FFIndex *MakeHaaliIndex(const char *SourceFile, int IndexMask, int DumpMask, const char *AudioFile, bool IgnoreDecodeErrors, int SourceMode, TIndexCallback IP, void *Private, char *ErrorMsg, unsigned MsgSize) {
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::CoInitializeEx(NULL, COINIT_MULTITHREADED);
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CLSID clsid = HAALI_TS_Parser;
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if (SourceMode == 1)
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clsid = HAALI_OGM_Parser;
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CComPtr<IMMContainer> pMMC;
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if (FAILED(pMMC.CoCreateInstance(clsid))) {
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_snprintf(ErrorMsg, MsgSize, "Can't create parser");
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return NULL;
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}
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CComPtr<IMemAlloc> pMA;
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if (FAILED(pMA.CoCreateInstance(CLSID_MemAlloc))) {
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_snprintf(ErrorMsg, MsgSize, "Can't create memory allocator");
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return NULL;
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}
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CComPtr<IMMStream> pMS;
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if (FAILED(pMS.CoCreateInstance(CLSID_DiskFile))) {
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_snprintf(ErrorMsg, MsgSize, "Can't create disk file reader");
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return NULL;
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}
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WCHAR WSourceFile[2048];
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mbstowcs(WSourceFile, SourceFile, 2000);
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CComQIPtr<IMMStreamOpen> pMSO(pMS);
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if (FAILED(pMSO->Open(WSourceFile))) {
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_snprintf(ErrorMsg, MsgSize, "Can't open file");
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return NULL;
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}
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if (FAILED(pMMC->Open(pMS, 0, NULL, pMA))) {
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_snprintf(ErrorMsg, MsgSize, "Can't parse file");
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return NULL;
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}
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int NumTracks = 0;
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CComPtr<IEnumUnknown> pEU;
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if (SUCCEEDED(pMMC->EnumTracks(&pEU))) {
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CComPtr<IUnknown> pU;
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while (pEU->Next(1, &pU, NULL) == S_OK) {
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NumTracks++;
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pU = NULL;
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}
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}
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// Audio stuff
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int16_t *db;
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MatroskaAudioContext *AudioContexts;
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HaaliIndexMemory IM = HaaliIndexMemory(NumTracks, db, AudioContexts);
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FFIndex *TrackIndices = new FFIndex();
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TrackIndices->Decoder = 2;
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if (SourceMode == 1)
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TrackIndices->Decoder = 3;
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int TrackTypes[32];
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int CurrentTrack = 0;
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pEU = NULL;
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if (SUCCEEDED(pMMC->EnumTracks(&pEU))) {
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CComPtr<IUnknown> pU;
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while (pEU->Next(1, &pU, NULL) == S_OK) {
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CComQIPtr<IPropertyBag> pBag = pU;
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AVCodec *CodecID = NULL;
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TrackTypes[CurrentTrack] = -200;
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uint8_t * CodecPrivate = NULL;
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int CodecPrivateSize = 0;
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if (pBag) {
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CComVariant pV;
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pV.Clear();
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if (SUCCEEDED(pBag->Read(L"Type", &pV, NULL)) && SUCCEEDED(pV.ChangeType(VT_UI4)))
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TrackTypes[CurrentTrack] = pV.uintVal;
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pV.Clear();
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if (SUCCEEDED(pBag->Read(L"CodecPrivate", &pV, NULL))) {
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CodecPrivateSize = vtSize(pV);
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CodecPrivate = new uint8_t[CodecPrivateSize];
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vtCopy(pV, CodecPrivate);
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}
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pV.Clear();
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if (SUCCEEDED(pBag->Read(L"CodecID", &pV, NULL)) && SUCCEEDED(pV.ChangeType(VT_BSTR))) {
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char ACodecID[2048];
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wcstombs(ACodecID, pV.bstrVal, 2000);
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CodecID = avcodec_find_decoder(MatroskaToFFCodecID(ACodecID, CodecPrivate));
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}
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}
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TrackIndices->push_back(FFTrack(1, 1000000000, TrackTypes[CurrentTrack] - 1));
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if (IndexMask & (1 << CurrentTrack) && TrackTypes[CurrentTrack] == TT_AUDIO) {
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AVCodecContext *AudioCodecContext = avcodec_alloc_context();
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AudioCodecContext->extradata = CodecPrivate;
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AudioCodecContext->extradata_size = CodecPrivateSize;
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AudioContexts[CurrentTrack].CTX = AudioCodecContext;
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AVCodec *AudioCodec = CodecID;
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if (AudioCodec == NULL) {
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av_free(AudioCodecContext);
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AudioContexts[CurrentTrack].CTX = NULL;
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_snprintf(ErrorMsg, MsgSize, "Audio codec not found");
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return NULL;
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}
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if (avcodec_open(AudioCodecContext, AudioCodec) < 0) {
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av_free(AudioCodecContext);
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AudioContexts[CurrentTrack].CTX = NULL;
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_snprintf(ErrorMsg, MsgSize, "Could not open audio codec");
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return NULL;
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}
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} else {
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IndexMask &= ~(1 << CurrentTrack);
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}
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pU = NULL;
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CurrentTrack++;
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}
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}
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//
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AVPacket TempPacket;
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InitNullPacket(&TempPacket);
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for (;;) {
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if (IP) {
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if ((*IP)(0, 1, Private)) {
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_snprintf(ErrorMsg, MsgSize, "Cancelled by user");
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delete TrackIndices;
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return NULL;
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}
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}
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CComPtr<IMMFrame> pMMF;
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if (pMMC->ReadFrame(NULL, &pMMF) != S_OK)
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break;
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REFERENCE_TIME Ts, Te;
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HRESULT hr = pMMF->GetTime(&Ts, &Te);
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unsigned int CurrentTrack = pMMF->GetTrack();
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// Only create index entries for video for now to save space
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if (TrackTypes[CurrentTrack] == TT_VIDEO) {
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(*TrackIndices)[CurrentTrack].push_back(TFrameInfo(Ts, pMMF->IsSyncPoint() == S_OK));
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} else if (TrackTypes[CurrentTrack] == TT_AUDIO && (IndexMask & (1 << CurrentTrack))) {
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(*TrackIndices)[CurrentTrack].push_back(TFrameInfo(AudioContexts[CurrentTrack].CurrentSample, 0 /* FIXME? */, pMMF->GetActualDataLength(), pMMF->IsSyncPoint() == S_OK));
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AVCodecContext *AudioCodecContext = AudioContexts[CurrentTrack].CTX;
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pMMF->GetPointer(&TempPacket.data);
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TempPacket.size = pMMF->GetActualDataLength();
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while (TempPacket.size > 0) {
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int dbsize = AVCODEC_MAX_AUDIO_FRAME_SIZE*10;
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int Ret = avcodec_decode_audio3(AudioCodecContext, db, &dbsize, &TempPacket);
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if (Ret < 0) {
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if (IgnoreDecodeErrors) {
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(*TrackIndices)[CurrentTrack].clear();
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IndexMask &= ~(1 << CurrentTrack);
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break;
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} else {
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_snprintf(ErrorMsg, MsgSize, "Audio decoding error");
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delete TrackIndices;
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return NULL;
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}
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}
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if (Ret > 0) {
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TempPacket.size -= Ret;
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TempPacket.data += Ret;
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}
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if (dbsize > 0)
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AudioContexts[CurrentTrack].CurrentSample += (dbsize * 8) / (av_get_bits_per_sample_format(AudioCodecContext->sample_fmt) * AudioCodecContext->channels);
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if (dbsize > 0 && (DumpMask & (1 << CurrentTrack))) {
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// Delay writer creation until after an audio frame has been decoded. This ensures that all parameters are known when writing the headers.
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if (!AudioContexts[CurrentTrack].W64W) {
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TAudioProperties AP;
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AVCodecContext *CTX = AudioContexts[CurrentTrack].CTX;
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AP.BitsPerSample = CTX->bits_per_coded_sample;
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char ABuf[50];
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std::string WN(AudioFile);
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_snprintf(ABuf, sizeof(ABuf), ".%02d.delay.%d.w64", CurrentTrack, 0);
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WN += ABuf;
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AudioContexts[CurrentTrack].W64W = new Wave64Writer(WN.c_str(), av_get_bits_per_sample_format(AudioCodecContext->sample_fmt),
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AudioCodecContext->channels, AudioCodecContext->sample_rate, AudioFMTIsFloat(AudioCodecContext->sample_fmt));
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}
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AudioContexts[CurrentTrack].W64W->WriteData(db, dbsize);
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}
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}
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}
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}
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SortTrackIndices(TrackIndices);
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return TrackIndices;
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}
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#endif
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static FFIndex *MakeMatroskaIndex(const char *SourceFile, int IndexMask, int DumpMask, const char *AudioFile, bool IgnoreDecodeErrors, TIndexCallback IP, void *Private, char *ErrorMsg, unsigned MsgSize) {
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MatroskaFile *MF;
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char ErrorMessage[256];
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MatroskaReaderContext MC;
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MC.Buffer = NULL;
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MC.BufferSize = 0;
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InitStdIoStream(&MC.ST);
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MC.ST.fp = fopen(SourceFile, "rb");
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if (MC.ST.fp == NULL) {
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_snprintf(ErrorMsg, MsgSize, "Can't open '%s': %s", SourceFile, strerror(errno));
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return NULL;
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}
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setvbuf(MC.ST.fp, NULL, _IOFBF, CACHESIZE);
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MF = mkv_OpenEx(&MC.ST.base, 0, 0, ErrorMessage, sizeof(ErrorMessage));
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if (MF == NULL) {
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fclose(MC.ST.fp);
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_snprintf(ErrorMsg, MsgSize, "Can't parse Matroska file: %s", ErrorMessage);
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return NULL;
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}
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// Audio stuff
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int16_t *db;
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MatroskaAudioContext *AudioContexts;
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MatroskaIndexMemory IM = MatroskaIndexMemory(mkv_GetNumTracks(MF), db, AudioContexts, MF, &MC);
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for (unsigned int i = 0; i < mkv_GetNumTracks(MF); i++) {
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TrackInfo *TI = mkv_GetTrackInfo(MF, i);
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if (IndexMask & (1 << i) && TI->Type == TT_AUDIO) {
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AVCodecContext *AudioCodecContext = avcodec_alloc_context();
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AudioCodecContext->extradata = (uint8_t *)TI->CodecPrivate;
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AudioCodecContext->extradata_size = TI->CodecPrivateSize;
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AudioContexts[i].CTX = AudioCodecContext;
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if (TI->CompEnabled) {
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AudioContexts[i].CS = cs_Create(MF, i, ErrorMessage, sizeof(ErrorMessage));
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if (AudioContexts[i].CS == NULL) {
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av_free(AudioCodecContext);
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AudioContexts[i].CTX = NULL;
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_snprintf(ErrorMsg, MsgSize, "Can't create decompressor: %s", ErrorMessage);
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return NULL;
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}
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}
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AVCodec *AudioCodec = avcodec_find_decoder(MatroskaToFFCodecID(TI->CodecID, TI->CodecPrivate));
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if (AudioCodec == NULL) {
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av_free(AudioCodecContext);
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AudioContexts[i].CTX = NULL;
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_snprintf(ErrorMsg, MsgSize, "Audio codec not found");
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return NULL;
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}
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if (avcodec_open(AudioCodecContext, AudioCodec) < 0) {
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av_free(AudioCodecContext);
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AudioContexts[i].CTX = NULL;
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_snprintf(ErrorMsg, MsgSize, "Could not open audio codec");
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return NULL;
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}
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} else {
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IndexMask &= ~(1 << i);
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}
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}
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//
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int64_t CurrentPos = _ftelli64(MC.ST.fp);
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_fseeki64(MC.ST.fp, 0, SEEK_END);
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int64_t SourceSize = _ftelli64(MC.ST.fp);
|
|
_fseeki64(MC.ST.fp, CurrentPos, SEEK_SET);
|
|
|
|
FFIndex *TrackIndices = new FFIndex();
|
|
TrackIndices->Decoder = 1;
|
|
|
|
for (unsigned int i = 0; i < mkv_GetNumTracks(MF); i++)
|
|
TrackIndices->push_back(FFTrack(mkv_TruncFloat(mkv_GetTrackInfo(MF, i)->TimecodeScale), 1000000, mkv_GetTrackInfo(MF, i)->Type - 1));
|
|
|
|
ulonglong StartTime, EndTime, FilePos;
|
|
unsigned int Track, FrameFlags, FrameSize;
|
|
AVPacket TempPacket;
|
|
InitNullPacket(&TempPacket);
|
|
|
|
while (mkv_ReadFrame(MF, 0, &Track, &StartTime, &EndTime, &FilePos, &FrameSize, &FrameFlags) == 0) {
|
|
// Update progress
|
|
if (IP) {
|
|
if ((*IP)(_ftelli64(MC.ST.fp), SourceSize, Private)) {
|
|
_snprintf(ErrorMsg, MsgSize, "Cancelled by user");
|
|
delete TrackIndices;
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
// Only create index entries for video for now to save space
|
|
if (mkv_GetTrackInfo(MF, Track)->Type == TT_VIDEO) {
|
|
(*TrackIndices)[Track].push_back(TFrameInfo(StartTime, (FrameFlags & FRAME_KF) != 0));
|
|
} else if (mkv_GetTrackInfo(MF, Track)->Type == TT_AUDIO && (IndexMask & (1 << Track))) {
|
|
(*TrackIndices)[Track].push_back(TFrameInfo(AudioContexts[Track].CurrentSample, FilePos, FrameSize, (FrameFlags & FRAME_KF) != 0));
|
|
ReadFrame(FilePos, FrameSize, AudioContexts[Track].CS, MC, ErrorMsg, MsgSize);
|
|
AVCodecContext *AudioCodecContext = AudioContexts[Track].CTX;
|
|
TempPacket.data = MC.Buffer;
|
|
TempPacket.size = FrameSize;
|
|
|
|
while (TempPacket.size > 0) {
|
|
int dbsize = AVCODEC_MAX_AUDIO_FRAME_SIZE*10;
|
|
int Ret = avcodec_decode_audio3(AudioCodecContext, db, &dbsize, &TempPacket);
|
|
if (Ret < 0) {
|
|
if (IgnoreDecodeErrors) {
|
|
(*TrackIndices)[Track].clear();
|
|
IndexMask &= ~(1 << Track);
|
|
break;
|
|
} else {
|
|
_snprintf(ErrorMsg, MsgSize, "Audio decoding error");
|
|
delete TrackIndices;
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
if (Ret > 0) {
|
|
TempPacket.size -= Ret;
|
|
TempPacket.data += Ret;
|
|
}
|
|
|
|
if (dbsize > 0)
|
|
AudioContexts[Track].CurrentSample += (dbsize * 8) / (av_get_bits_per_sample_format(AudioCodecContext->sample_fmt) * AudioCodecContext->channels);
|
|
|
|
if (dbsize > 0 && (DumpMask & (1 << Track))) {
|
|
// Delay writer creation until after an audio frame has been decoded. This ensures that all parameters are known when writing the headers.
|
|
if (!AudioContexts[Track].W64W) {
|
|
char ABuf[50];
|
|
std::string WN(AudioFile);
|
|
int Offset = StartTime * mkv_TruncFloat(mkv_GetTrackInfo(MF, Track)->TimecodeScale) / (double)1000000;
|
|
_snprintf(ABuf, sizeof(ABuf), ".%02d.delay.%d.w64", Track, Offset);
|
|
WN += ABuf;
|
|
|
|
AudioContexts[Track].W64W = new Wave64Writer(WN.c_str(), av_get_bits_per_sample_format(AudioCodecContext->sample_fmt),
|
|
AudioCodecContext->channels, AudioCodecContext->sample_rate, AudioFMTIsFloat(AudioCodecContext->sample_fmt));
|
|
}
|
|
|
|
AudioContexts[Track].W64W->WriteData(db, dbsize);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
SortTrackIndices(TrackIndices);
|
|
return TrackIndices;
|
|
}
|
|
|
|
FFIndex *MakeIndex(const char *SourceFile, int IndexMask, int DumpMask, const char *AudioFile, bool IgnoreDecodeErrors, TIndexCallback IP, void *Private, char *ErrorMsg, unsigned MsgSize) {
|
|
AVFormatContext *FormatContext = NULL;
|
|
IndexMask |= DumpMask;
|
|
|
|
if (av_open_input_file(&FormatContext, SourceFile, NULL, 0, NULL) != 0) {
|
|
_snprintf(ErrorMsg, MsgSize, "Can't open '%s'", SourceFile);
|
|
return NULL;
|
|
}
|
|
|
|
// Do matroska indexing instead?
|
|
if (!strcmp(FormatContext->iformat->name, "matroska")) {
|
|
av_close_input_file(FormatContext);
|
|
return MakeMatroskaIndex(SourceFile, IndexMask, DumpMask, AudioFile, IgnoreDecodeErrors, IP, Private, ErrorMsg, MsgSize);
|
|
}
|
|
|
|
#ifdef HAALISOURCE
|
|
// Do haali ts indexing instead?
|
|
if (!strcmp(FormatContext->iformat->name, "mpeg") || !strcmp(FormatContext->iformat->name, "mpegts")) {
|
|
av_close_input_file(FormatContext);
|
|
return MakeHaaliIndex(SourceFile, IndexMask, DumpMask, AudioFile, IgnoreDecodeErrors, 0, IP, Private, ErrorMsg, MsgSize);
|
|
}
|
|
|
|
if (!strcmp(FormatContext->iformat->name, "ogg")) {
|
|
av_close_input_file(FormatContext);
|
|
return MakeHaaliIndex(SourceFile, IndexMask, DumpMask, AudioFile, IgnoreDecodeErrors, 1, IP, Private, ErrorMsg, MsgSize);
|
|
}
|
|
#endif
|
|
|
|
if (av_find_stream_info(FormatContext) < 0) {
|
|
av_close_input_file(FormatContext);
|
|
_snprintf(ErrorMsg, MsgSize, "Couldn't find stream information");
|
|
return NULL;
|
|
}
|
|
|
|
// Audio stuff
|
|
|
|
int16_t *db;
|
|
FFAudioContext *AudioContexts;
|
|
FFIndexMemory IM = FFIndexMemory(FormatContext->nb_streams, db, AudioContexts, FormatContext);
|
|
|
|
for (unsigned int i = 0; i < FormatContext->nb_streams; i++) {
|
|
if (IndexMask & (1 << i) && FormatContext->streams[i]->codec->codec_type == CODEC_TYPE_AUDIO) {
|
|
AVCodecContext *AudioCodecContext = FormatContext->streams[i]->codec;
|
|
|
|
AVCodec *AudioCodec = avcodec_find_decoder(AudioCodecContext->codec_id);
|
|
if (AudioCodec == NULL) {
|
|
_snprintf(ErrorMsg, MsgSize, "Audio codec not found");
|
|
return NULL;
|
|
}
|
|
|
|
if (avcodec_open(AudioCodecContext, AudioCodec) < 0) {
|
|
_snprintf(ErrorMsg, MsgSize, "Could not open audio codec");
|
|
return NULL;
|
|
}
|
|
|
|
AudioContexts[i].CTX = AudioCodecContext;
|
|
} else {
|
|
IndexMask &= ~(1 << i);
|
|
}
|
|
}
|
|
|
|
//
|
|
|
|
FFIndex *TrackIndices = new FFIndex();
|
|
TrackIndices->Decoder = 0;
|
|
|
|
for (unsigned int i = 0; i < FormatContext->nb_streams; i++)
|
|
TrackIndices->push_back(FFTrack((int64_t)FormatContext->streams[i]->time_base.num * 1000,
|
|
FormatContext->streams[i]->time_base.den,
|
|
FormatContext->streams[i]->codec->codec_type));
|
|
|
|
AVPacket Packet, TempPacket;
|
|
InitNullPacket(&Packet);
|
|
InitNullPacket(&TempPacket);
|
|
while (av_read_frame(FormatContext, &Packet) >= 0) {
|
|
// Update progress
|
|
if (IP) {
|
|
if ((*IP)(FormatContext->pb->pos, FormatContext->file_size, Private)) {
|
|
_snprintf(ErrorMsg, MsgSize, "Cancelled by user");
|
|
delete TrackIndices;
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
// Only create index entries for video for now to save space
|
|
if (FormatContext->streams[Packet.stream_index]->codec->codec_type == CODEC_TYPE_VIDEO) {
|
|
(*TrackIndices)[Packet.stream_index].push_back(TFrameInfo(Packet.dts, (Packet.flags & PKT_FLAG_KEY) ? 1 : 0));
|
|
} else if (FormatContext->streams[Packet.stream_index]->codec->codec_type == CODEC_TYPE_AUDIO && (IndexMask & (1 << Packet.stream_index))) {
|
|
(*TrackIndices)[Packet.stream_index].push_back(TFrameInfo(Packet.dts, AudioContexts[Packet.stream_index].CurrentSample, (Packet.flags & PKT_FLAG_KEY) ? 1 : 0));
|
|
AVCodecContext *AudioCodecContext = FormatContext->streams[Packet.stream_index]->codec;
|
|
TempPacket.data = Packet.data;
|
|
TempPacket.size = Packet.size;
|
|
|
|
while (TempPacket.size > 0) {
|
|
int dbsize = AVCODEC_MAX_AUDIO_FRAME_SIZE*10;
|
|
int Ret = avcodec_decode_audio3(AudioCodecContext, db, &dbsize, &TempPacket);
|
|
if (Ret < 0) {
|
|
if (IgnoreDecodeErrors) {
|
|
(*TrackIndices)[Packet.stream_index].clear();
|
|
IndexMask &= ~(1 << Packet.stream_index);
|
|
break;
|
|
} else {
|
|
_snprintf(ErrorMsg, MsgSize, "Audio decoding error");
|
|
delete TrackIndices;
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
if (Ret > 0) {
|
|
TempPacket.size -= Ret;
|
|
TempPacket.data += Ret;
|
|
}
|
|
|
|
if (dbsize > 0)
|
|
AudioContexts[Packet.stream_index].CurrentSample += (dbsize * 8) / (av_get_bits_per_sample_format(AudioCodecContext->sample_fmt) * AudioCodecContext->channels);
|
|
|
|
if (dbsize > 0 && (DumpMask & (1 << Packet.stream_index))) {
|
|
// Delay writer creation until after an audio frame has been decoded. This ensures that all parameters are known when writing the headers.
|
|
if (!AudioContexts[Packet.stream_index].W64W) {
|
|
char ABuf[50];
|
|
std::string WN(AudioFile);
|
|
int Offset = (Packet.dts * FormatContext->streams[Packet.stream_index]->time_base.num)
|
|
/ (double)(FormatContext->streams[Packet.stream_index]->time_base.den * 1000);
|
|
_snprintf(ABuf, sizeof(ABuf), ".%02d.delay.%d.w64", Packet.stream_index, Offset);
|
|
WN += ABuf;
|
|
|
|
AudioContexts[Packet.stream_index].W64W = new Wave64Writer(WN.c_str(), av_get_bits_per_sample_format(AudioCodecContext->sample_fmt),
|
|
AudioCodecContext->channels, AudioCodecContext->sample_rate, AudioFMTIsFloat(AudioCodecContext->sample_fmt));
|
|
}
|
|
|
|
AudioContexts[Packet.stream_index].W64W->WriteData(db, dbsize);
|
|
}
|
|
}
|
|
}
|
|
|
|
av_free_packet(&Packet);
|
|
}
|
|
|
|
SortTrackIndices(TrackIndices);
|
|
return TrackIndices;
|
|
}
|
|
|
|
FFIndex *ReadIndex(const char *IndexFile, char *ErrorMsg, unsigned MsgSize) {
|
|
std::ifstream Index(IndexFile, std::ios::in | std::ios::binary);
|
|
|
|
if (!Index.is_open()) {
|
|
_snprintf(ErrorMsg, MsgSize, "Failed to open '%s' for reading", IndexFile);
|
|
return NULL;
|
|
}
|
|
|
|
// Read the index file header
|
|
IndexHeader IH;
|
|
Index.read(reinterpret_cast<char *>(&IH), sizeof(IH));
|
|
if (IH.Id != INDEXID) {
|
|
_snprintf(ErrorMsg, MsgSize, "'%s' is not a valid index file", IndexFile);
|
|
return NULL;
|
|
}
|
|
|
|
if (IH.Version != INDEXVERSION) {
|
|
_snprintf(ErrorMsg, MsgSize, "'%s' is not the expected index version", IndexFile);
|
|
return NULL;
|
|
}
|
|
|
|
if (IH.LAVUVersion != LIBAVUTIL_VERSION_INT || IH.LAVFVersion != LIBAVFORMAT_VERSION_INT ||
|
|
IH.LAVCVersion != LIBAVCODEC_VERSION_INT || IH.LSWSVersion != LIBSWSCALE_VERSION_INT ||
|
|
IH.LPPVersion != LIBPOSTPROC_VERSION_INT) {
|
|
_snprintf(ErrorMsg, MsgSize, "A different FFmpeg build was used to create this index", IndexFile);
|
|
return NULL;
|
|
}
|
|
|
|
FFIndex *TrackIndices = new FFIndex();
|
|
|
|
try {
|
|
|
|
TrackIndices->Decoder = IH.Decoder;
|
|
|
|
for (unsigned int i = 0; i < IH.Tracks; i++) {
|
|
// Read how many records belong to the current stream
|
|
int TT;
|
|
Index.read(reinterpret_cast<char *>(&TT), sizeof(TT));
|
|
int64_t Num;
|
|
Index.read(reinterpret_cast<char *>(&Num), sizeof(Num));
|
|
int64_t Den;
|
|
Index.read(reinterpret_cast<char *>(&Den), sizeof(Den));
|
|
size_t Frames;
|
|
Index.read(reinterpret_cast<char *>(&Frames), sizeof(Frames));
|
|
TrackIndices->push_back(FFTrack(Num, Den, TT));
|
|
|
|
TFrameInfo FI(0, false);
|
|
for (size_t j = 0; j < Frames; j++) {
|
|
Index.read(reinterpret_cast<char *>(&FI), sizeof(TFrameInfo));
|
|
TrackIndices->at(i).push_back(FI);
|
|
}
|
|
}
|
|
|
|
} catch (...) {
|
|
delete TrackIndices;
|
|
_snprintf(ErrorMsg, MsgSize, "Unknown error while reading index information in '%s'", IndexFile);
|
|
return NULL;
|
|
}
|
|
|
|
return TrackIndices;
|
|
}
|
|
|
|
int FFTrack::WriteTimecodes(const char *TimecodeFile, char *ErrorMsg, unsigned MsgSize) {
|
|
std::ofstream Timecodes(TimecodeFile, std::ios::out | std::ios::trunc);
|
|
|
|
if (!Timecodes.is_open()) {
|
|
_snprintf(ErrorMsg, MsgSize, "Failed to open '%s' for writing", TimecodeFile);
|
|
return 1;
|
|
}
|
|
|
|
Timecodes << "# timecode format v2\n";
|
|
|
|
for (iterator Cur=begin(); Cur!=end(); Cur++)
|
|
Timecodes << std::fixed << ((Cur->DTS * TB.Num) / (double)TB.Den) << "\n";
|
|
|
|
return 0;
|
|
}
|
|
|
|
int FFTrack::FrameFromDTS(int64_t DTS) {
|
|
for (int i = 0; i < static_cast<int>(size()); i++)
|
|
if (at(i).DTS == DTS)
|
|
return i;
|
|
return -1;
|
|
}
|
|
|
|
int FFTrack::ClosestFrameFromDTS(int64_t DTS) {
|
|
int Frame = 0;
|
|
int64_t BestDiff = 0xFFFFFFFFFFFFFFLL; // big number
|
|
for (int i = 0; i < static_cast<int>(size()); i++) {
|
|
int64_t CurrentDiff = FFABS(at(i).DTS - DTS);
|
|
if (CurrentDiff < BestDiff) {
|
|
BestDiff = CurrentDiff;
|
|
Frame = i;
|
|
}
|
|
}
|
|
|
|
return Frame;
|
|
}
|
|
|
|
int FFTrack::FindClosestKeyFrame(int Frame) {
|
|
Frame = FFMIN(FFMAX(Frame, 0), static_cast<int>(size()) - 1);
|
|
for (int i = Frame; i > 0; i--)
|
|
if (at(i).KeyFrame)
|
|
return i;
|
|
return 0;
|
|
}
|
|
|
|
FFTrack::FFTrack() {
|
|
this->TT = 0;
|
|
this->TB.Num = 0;
|
|
this->TB.Den = 0;
|
|
}
|
|
|
|
FFTrack::FFTrack(int64_t Num, int64_t Den, int TT) {
|
|
this->TT = TT;
|
|
this->TB.Num = Num;
|
|
this->TB.Den = Den;
|
|
}
|