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/*
* Copyright (C) 2010-2014 Hendrik Leppkes
* http://www.1f0.de
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#pragma once
#include <deque>
#include "StreamInfo.h"
#include "Packet.h"
#define DSHOW_TIME_BASE 10000000 // DirectShow times are in 100ns units
#define NO_SUBTITLE_PID DWORD_MAX
#define FORCED_SUBTITLE_PID (NO_SUBTITLE_PID - 1)
#define NO_SUB_STRING L"No subtitles"
#define FORCED_SUB_STRING L"Forced Subtitles (auto)"
struct ILAVFSettingsInternal;
typedef struct CSubtitleSelector {
std::string audioLanguage;
std::string subtitleLanguage;
#define SUBTITLE_FLAG_DEFAULT 0x0001
#define SUBTITLE_FLAG_FORCED 0x0002
#define SUBTITLE_FLAG_NORMAL 0x0004
#define SUBTITLE_FLAG_IMPAIRED 0x0008
#define SUBTITLE_FLAG_VIRTUAL 0x0080
// Values above 0xFF are special
#define SUBTITLE_FLAG_PGS 0x8000
DWORD dwFlags;
} CSubtitleSelector;
class CBaseDemuxer : public CUnknown
{
public:
enum StreamType {video, audio, subpic, unknown};
typedef struct stream {
CStreamInfo *streamInfo;
DWORD pid;
std::string language;
LCID lcid;
struct stream() { streamInfo = nullptr; pid = 0; lcid = 0; }
operator DWORD() const { return pid; }
bool operator == (const struct stream& s) const { return (DWORD)*this == (DWORD)s; }
} stream;
DECLARE_IUNKNOWN
// Demuxing Methods (pure virtual)
// Open the file
virtual STDMETHODIMP Open(LPCOLESTR pszFileName) = 0;
// Start the demuxer
virtual STDMETHODIMP Start() { return E_NOTIMPL; }
// Abort opening the file
virtual STDMETHODIMP AbortOpening(int mode = 1) { return E_NOTIMPL; }
// Get Duration
virtual REFERENCE_TIME GetDuration() const = 0;
// Get the next packet from the file
virtual STDMETHODIMP GetNextPacket(Packet **ppPacket) = 0;
// Seek to the given position
virtual STDMETHODIMP Seek(REFERENCE_TIME rTime) = 0;
// Get the container format
virtual const char *GetContainerFormat() const = 0;
// Get Container Flags
#define LAVFMT_TS_DISCONT 0x0001
#define LAVFMT_TS_DISCONT_NO_DOWNSTREAM 0x0002
virtual DWORD GetContainerFlags() { return 0; }
// Select the active title
virtual STDMETHODIMP SetTitle(int idx) { return E_NOTIMPL; }
// Query the active title
virtual STDMETHODIMP_(int) GetTitle() { return 0; }
// Get Title Info
virtual STDMETHODIMP GetTitleInfo(int idx, REFERENCE_TIME *rtDuration, WCHAR **ppszName) { return E_NOTIMPL; }
// Title count
virtual STDMETHODIMP_(int) GetNumTitles() { return 0; }
// Set the currently active stream of one type
// The demuxers can use this to filter packets before returning back to the caller on GetNextPacket
// This functionality is optional however, so the caller should not rely on only receiving packets
// for active streams.
virtual HRESULT SetActiveStream(StreamType type, int pid) { m_dActiveStreams[type] = pid; return S_OK; }
// Called when the settings of the splitter change
virtual void SettingsChanged(ILAVFSettingsInternal *pSettings) {};
virtual STDMETHODIMP_(DWORD) GetStreamFlags(DWORD dwStream) { return 0; }
virtual STDMETHODIMP_(int) GetPixelFormat(DWORD dwStream) { return AV_PIX_FMT_NONE; }
virtual STDMETHODIMP_(int) GetHasBFrames(DWORD dwStream) { return -1; }
public:
class CStreamList : public std::deque<stream>
{
public:
~CStreamList() { Clear(); }
static const WCHAR* ToStringW(int type);
static const CHAR* ToString(int type);
stream* FindStream(DWORD pid);
void Clear();
};
protected:
CBaseDemuxer(LPCTSTR pName, CCritSec *pLock);
void CreateNoSubtitleStream();
void CreatePGSForcedSubtitleStream();
public:
// Get the StreamList of the corresponding type
virtual CStreamList *GetStreams(StreamType type) { return &m_streams[type]; }
// Select the best video stream
virtual const stream* SelectVideoStream() = 0;
// Select the best audio stream
virtual const stream* SelectAudioStream(std::list<std::string> prefLanguages) = 0;
// Select the best subtitle stream
virtual const stream* SelectSubtitleStream(std::list<CSubtitleSelector> subtitleSelectors, std::string audioLanguage) = 0;
protected:
CCritSec *m_pLock = nullptr;
CStreamList m_streams[unknown];
int m_dActiveStreams[unknown];
};
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