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/*
* Copyright (C) 2017 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 "DecBase.h"
#include "avcodec.h"
#include <d3d11.h>
#include <dxgi.h>
#include "d3d11/D3D11SurfaceAllocator.h"
extern "C" {
#include "libavutil/hwcontext.h"
#include "libavutil/hwcontext_d3d11va.h"
#include "libavcodec/d3d11va.h"
}
#define D3D11_QUEUE_SURFACES 4
typedef HRESULT(WINAPI *PFN_CREATE_DXGI_FACTORY1)(REFIID riid, void **ppFactory);
class CDecD3D11 : public CDecAvcodec
{
public:
CDecD3D11(void);
virtual ~CDecD3D11(void);
// ILAVDecoder
STDMETHODIMP Check();
STDMETHODIMP InitDecoder(AVCodecID codec, const CMediaType *pmt);
STDMETHODIMP GetPixelFormat(LAVPixelFormat *pPix, int *pBpp);
STDMETHODIMP Flush();
STDMETHODIMP EndOfStream();
STDMETHODIMP InitAllocator(IMemAllocator **ppAlloc);
STDMETHODIMP PostConnect(IPin *pPin);
STDMETHODIMP_(long) GetBufferCount();
STDMETHODIMP_(const WCHAR*) GetDecoderName() { return m_bReadBackFallback ? (m_bDirect ? L"d3d11 cb direct" : L"d3d11 cb") : L"d3d11 native"; }
STDMETHODIMP HasThreadSafeBuffers() { return S_FALSE; }
STDMETHODIMP SetDirectOutput(BOOL bDirect) { m_bDirect = bDirect; return S_OK; }
STDMETHODIMP GetHWAccelActiveDevice(BSTR *pstrDeviceName);
// CDecBase
STDMETHODIMP Init();
protected:
HRESULT AdditionaDecoderInit();
HRESULT PostDecode();
HRESULT HandleDXVA2Frame(LAVFrame *pFrame);
HRESULT DeliverD3D11Frame(LAVFrame *pFrame);
HRESULT DeliverD3D11Readback(LAVFrame *pFrame);
HRESULT DeliverD3D11ReadbackDirect(LAVFrame *pFrame);
private:
STDMETHODIMP DestroyDecoder(bool bFull, bool bNoAVCodec = false);
STDMETHODIMP ReInitD3D11Decoder(AVCodecContext *c);
STDMETHODIMP CreateD3D11Decoder();
STDMETHODIMP AllocateFramesContext(int width, int height, AVPixelFormat format, int nSurfaces, AVBufferRef **pFramesCtx);
STDMETHODIMP FindVideoServiceConversion(AVCodecID codec, int profile, DXGI_FORMAT surface_format, GUID *input);
STDMETHODIMP FindDecoderConfiguration(const D3D11_VIDEO_DECODER_DESC *desc, D3D11_VIDEO_DECODER_CONFIG *pConfig);
STDMETHODIMP FillHWContext(AVD3D11VAContext *ctx);
STDMETHODIMP FlushDisplayQueue(BOOL bDeliver);
static enum AVPixelFormat get_d3d11_format(struct AVCodecContext *s, const enum AVPixelFormat * pix_fmts);
static int get_d3d11_buffer(struct AVCodecContext *c, AVFrame *pic, int flags);
private:
CD3D11SurfaceAllocator *m_pAllocator = nullptr;
AVBufferRef *m_pDevCtx = nullptr;
AVBufferRef *m_pFramesCtx = nullptr;
D3D11_VIDEO_DECODER_CONFIG m_DecoderConfig;
ID3D11VideoDecoder *m_pDecoder = nullptr;
int m_nOutputViews = 0;
ID3D11VideoDecoderOutputView **m_pOutputViews = nullptr;
DWORD m_dwSurfaceWidth = 0;
DWORD m_dwSurfaceHeight = 0;
DWORD m_dwSurfaceCount = 0;
AVPixelFormat m_DecodePixelFormat = AV_PIX_FMT_NONE;
DXGI_FORMAT m_SurfaceFormat = DXGI_FORMAT_UNKNOWN;
BOOL m_bReadBackFallback = FALSE;
BOOL m_bDirect = FALSE;
BOOL m_bFailHWDecode = FALSE;
ID3D11Texture2D *m_pD3D11StagingTexture = nullptr;
LAVFrame* m_FrameQueue[D3D11_QUEUE_SURFACES];
int m_FrameQueuePosition = 0;
int m_DisplayDelay = D3D11_QUEUE_SURFACES;
struct
{
HMODULE d3d11lib;
PFN_D3D11_CREATE_DEVICE mD3D11CreateDevice;
HMODULE dxgilib;
PFN_CREATE_DXGI_FACTORY1 mCreateDXGIFactory1;
} dx = { 0 };
DXGI_ADAPTER_DESC m_AdapterDesc = { 0 };
friend class CD3D11SurfaceAllocator;
};
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