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/*
* Copyright (C) 2011 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, 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; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
* http://www.gnu.org/copyleft/gpl.html
*/
#pragma once
#include <deque>
#include "StreamInfo.h"
#define DSHOW_TIME_BASE 10000000 // DirectShow times are in 100ns units
#define NO_SUBTITLE_PID DWORD_MAX
struct ILAVFSettings;
// Data Packet for queue storage
class Packet
{
public:
static const REFERENCE_TIME INVALID_TIME = _I64_MIN;
DWORD StreamId;
BOOL bDiscontinuity, bSyncPoint, bAppendable;
REFERENCE_TIME rtStart, rtStop;
LONGLONG bPosition;
AM_MEDIA_TYPE* pmt;
#define LAV_PACKET_PARSED 0x0001
DWORD dwFlags;
Packet() { pmt = NULL; m_pbData = NULL; bDiscontinuity = bSyncPoint = bAppendable = FALSE; rtStart = rtStop = INVALID_TIME; m_dwSize = 0; m_dwBlockSize = 0; bPosition = -1; dwFlags = 0; }
~Packet() { DeleteMediaType(pmt); SAFE_CO_FREE(m_pbData); }
// Getter
DWORD GetDataSize() const { return m_dwSize; }
BYTE *GetData() { return m_pbData; }
BYTE GetAt(DWORD pos) const { return m_pbData[pos]; }
bool IsEmpty() const { return m_dwSize == 0; }
// Setter
void SetDataSize(DWORD len) { m_dwSize = len; if (m_dwSize > m_dwBlockSize) { m_pbData = (BYTE *)CoTaskMemRealloc(m_pbData, m_dwSize); m_dwBlockSize = m_dwSize; }}
void SetData(const void* ptr, DWORD len) { SetDataSize(len); memcpy(m_pbData, ptr, len); }
void Clear() { m_dwSize = m_dwBlockSize = 0; SAFE_CO_FREE(m_pbData); }
// Append the data of the package to our data buffer
void Append(Packet *ptr) {
AppendData(ptr->GetData(), ptr->GetDataSize());
}
void AppendData(const void* ptr, DWORD len) {
DWORD prevSize = m_dwSize;
SetDataSize(m_dwSize + len);
memcpy(m_pbData+prevSize, ptr, len);
}
// Remove count bytes from position index
void RemoveHead(DWORD count) {
count = min(count, m_dwSize);
memmove(m_pbData, m_pbData+count, m_dwSize-count);
SetDataSize(m_dwSize - count);
}
private:
DWORD m_dwSize;
DWORD m_dwBlockSize;
BYTE *m_pbData;
};
class CBaseDemuxer : public CUnknown
{
public:
enum StreamType {video, audio, subpic, unknown};
DECLARE_IUNKNOWN
// Demuxing Methods (pure virtual)
// Open the file
virtual STDMETHODIMP Open(LPCOLESTR pszFileName) = 0;
// 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;
// Create Stream Description
virtual HRESULT StreamInfo(DWORD streamId, LCID *plcid, WCHAR **ppszName) const = 0;
// Select the active title
virtual STDMETHODIMP SetTitle(uint32_t idx) { return E_NOTIMPL; }
// Get Title Info
virtual STDMETHODIMP GetTitleInfo(uint32_t idx, REFERENCE_TIME *rtDuration, WCHAR **ppszName) { return E_NOTIMPL; }
// Title count
virtual STDMETHODIMP GetNumTitles(uint32_t *count) { return E_NOTIMPL; }
// 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(ILAVFSettings *pSettings) {};
public:
struct stream {
CStreamInfo *streamInfo;
DWORD pid;
struct stream() { streamInfo = NULL; pid = 0; }
operator DWORD() const { return pid; }
bool operator == (const struct stream& s) const { return (DWORD)*this == (DWORD)s; }
};
class CStreamList : public std::deque<stream>
{
public:
static const WCHAR* ToStringW(int type);
static const CHAR* ToString(int type);
const stream* FindStream(DWORD pid);
void Clear();
};
protected:
CBaseDemuxer(LPCTSTR pName, CCritSec *pLock);
void CreateNoSubtitleStream();
public:
// Get the StreamList of the correponding 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;
// Subtitle modes
#define SUBMODE_NO_SUBS 0
#define SUBMODE_FORCED_SUBS 1
#define SUBMODE_ALWAYS_SUBS 2
// Select the best subtitle stream
virtual const stream* SelectSubtitleStream(std::list<std::string> prefLanguages, int subtitleMode, BOOL bOnlyMatching) = 0;
protected:
CCritSec *m_pLock;
CStreamList m_streams[unknown];
int m_dActiveStreams[unknown];
};
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