dmo_videodecoder.c

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/********************************************************

	DirectShow Video decoder implementation
	Copyright 2000 Eugene Kuznetsov  ([e-mail])

*********************************************************/
#include "config.h"
#include "dshow/guids.h"
#include "dshow/interfaces.h"
#include "registry.h"
#ifdef WIN32_LOADER
#include "../ldt_keeper.h"
#endif

#include "dshow/libwin32.h"
#include "DMO_Filter.h"

#include "DMO_VideoDecoder.h"

struct _DMO_VideoDecoder
{
    IVideoDecoder iv;
    
    DMO_Filter* m_pDMO_Filter;
    AM_MEDIA_TYPE m_sOurType, m_sDestType;
    VIDEOINFOHEADER* m_sVhdr;
    VIDEOINFOHEADER* m_sVhdr2;
    int m_Caps;//CAPS m_Caps;                // capabilities of DirectShow decoder
    int m_iLastQuality;         // remember last quality as integer
    int m_iMinBuffers;
    int m_iMaxAuto;
};

//#include "DMO_VideoDecoder.h"

#include "../wine/winerror.h"

#include <mplaylib.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/types.h>
#ifndef __MINGW32__
#include <sys/mman.h>
#endif
#include <mplaylib.h>
#include <mplaylib.h>  // labs
#undef memcpy
#define memcpy uc_memcpy
// strcmp((const char*)info.dll,...)  is used instead of  (... == ...)
// so Arpi could use char* pointer in his simplified DMO_VideoDecoder class

#define false 0
#define true 1


//int DMO_VideoDecoder_GetCapabilities(DMO_VideoDecoder *this){return this->m_Caps;}

typedef struct _ct ct;

struct _ct {
    fourcc_t fcc;
    unsigned int bits;
    const GUID* subtype;
    int cap;
    char *name;
	    };
            
static ct check[] = {
    { fccI420, 12, &MEDIASUBTYPE_I420,   CAP_I420, NULL     },
    { fccYV12, 12, &MEDIASUBTYPE_YV12,   CAP_YV12, NULL     },
    { fccYUY2, 16, &MEDIASUBTYPE_YUY2,   CAP_YUY2, NULL     },
    { fccUYVY, 16, &MEDIASUBTYPE_UYVY,   CAP_UYVY, NULL     },
    { fccYVYU, 16, &MEDIASUBTYPE_YVYU,   CAP_YVYU, NULL     },
    { fccIYUV, 24, &MEDIASUBTYPE_IYUV,   CAP_IYUV, NULL     },

    {       8,  8, &MEDIASUBTYPE_RGB8,   CAP_NONE, "RGB8"   },
    {      15, 16, &MEDIASUBTYPE_RGB555, CAP_NONE, "RGB555" },
    {      16, 16, &MEDIASUBTYPE_RGB565, CAP_NONE, "RGB565" },
    {      24, 24, &MEDIASUBTYPE_RGB24,  CAP_NONE, "RGB24"  },
    {      32, 32, &MEDIASUBTYPE_RGB32,  CAP_NONE, "RGB32"  },

    {0,0,NULL,0},
};

DMO_VideoDecoder * DMO_VideoDecoder_Open(char* dllname, GUID* guid, BITMAPINFOHEADER * format, int flip, int maxauto)
{
    DMO_VideoDecoder *this;
    HRESULT result;
    ct* c;
                        
    this = malloc(sizeof(DMO_VideoDecoder));
    memset( this, 0, sizeof(DMO_VideoDecoder));
    
    this->m_sVhdr2 = 0;
    this->m_iLastQuality = -1;
    this->m_iMaxAuto = maxauto;

#ifdef WIN32_LOADER
    Setup_LDT_Keeper();
#endif

    //memset(&m_obh, 0, sizeof(m_obh));
    //m_obh.biSize = sizeof(m_obh);
    /*try*/
    {
        unsigned int bihs;
        
	bihs = (format->biSize < (int) sizeof(BITMAPINFOHEADER)) ?
	    sizeof(BITMAPINFOHEADER) : format->biSize;
     
        this->iv.m_bh = malloc(bihs);
        memcpy(this->iv.m_bh, format, bihs);
        this->iv.m_bh->biSize = bihs;

        this->iv.m_State = STOP;
        //this->iv.m_pFrame = 0;
        this->iv.m_Mode = DIRECT;
        this->iv.m_iDecpos = 0;
        this->iv.m_iPlaypos = -1;
        this->iv.m_fQuality = 0.0f;
        this->iv.m_bCapable16b = true;
                
        bihs += sizeof(VIDEOINFOHEADER) - sizeof(BITMAPINFOHEADER);
	this->m_sVhdr = malloc(bihs);
	memset(this->m_sVhdr, 0, bihs);
	memcpy(&this->m_sVhdr->bmiHeader, this->iv.m_bh, this->iv.m_bh->biSize);
	this->m_sVhdr->rcSource.left = this->m_sVhdr->rcSource.top = 0;
	this->m_sVhdr->rcSource.right = this->m_sVhdr->bmiHeader.biWidth;
	this->m_sVhdr->rcSource.bottom = this->m_sVhdr->bmiHeader.biHeight;
	//this->m_sVhdr->rcSource.right = 0;
	//this->m_sVhdr->rcSource.bottom = 0;
	this->m_sVhdr->rcTarget = this->m_sVhdr->rcSource;

	this->m_sOurType.majortype = MEDIATYPE_Video;
	this->m_sOurType.subtype = MEDIATYPE_Video;
        this->m_sOurType.subtype.f1 = this->m_sVhdr->bmiHeader.biCompression;
	this->m_sOurType.formattype = FORMAT_VideoInfo;
        this->m_sOurType.bFixedSizeSamples = false;
	this->m_sOurType.bTemporalCompression = true;
	this->m_sOurType.pUnk = 0;
        this->m_sOurType.cbFormat = bihs;
        this->m_sOurType.pbFormat = (char*)this->m_sVhdr;

	this->m_sVhdr2 = (VIDEOINFOHEADER*)(malloc(sizeof(VIDEOINFOHEADER)+12));
	memcpy(this->m_sVhdr2, this->m_sVhdr, sizeof(VIDEOINFOHEADER));
	memset((char*)this->m_sVhdr2 + sizeof(VIDEOINFOHEADER), 0, 12);
	this->m_sVhdr2->bmiHeader.biCompression = 0;
	this->m_sVhdr2->bmiHeader.biBitCount = 24;

//	memset((char*)this->m_sVhdr2, 0, sizeof(VIDEOINFOHEADER)+12);
	this->m_sVhdr2->rcTarget = this->m_sVhdr->rcTarget;
//	this->m_sVhdr2->rcSource = this->m_sVhdr->rcSource;

	memset(&this->m_sDestType, 0, sizeof(this->m_sDestType));
	this->m_sDestType.majortype = MEDIATYPE_Video;
	this->m_sDestType.subtype = MEDIASUBTYPE_RGB24;
	this->m_sDestType.formattype = FORMAT_VideoInfo;
	this->m_sDestType.bFixedSizeSamples = true;
	this->m_sDestType.bTemporalCompression = false;
	this->m_sDestType.lSampleSize = labs(this->m_sVhdr2->bmiHeader.biWidth*this->m_sVhdr2->bmiHeader.biHeight
				       * ((this->m_sVhdr2->bmiHeader.biBitCount + 7) / 8));
	this->m_sVhdr2->bmiHeader.biSizeImage = this->m_sDestType.lSampleSize;
	this->m_sDestType.pUnk = 0;
	this->m_sDestType.cbFormat = sizeof(VIDEOINFOHEADER);
	this->m_sDestType.pbFormat = (char*)this->m_sVhdr2;
        
        memset(&this->iv.m_obh, 0, sizeof(this->iv.m_obh));
	memcpy(&this->iv.m_obh, this->iv.m_bh, sizeof(this->iv.m_obh) < (unsigned) this->iv.m_bh->biSize
	       ? sizeof(this->iv.m_obh) : (unsigned) this->iv.m_bh->biSize);
	this->iv.m_obh.biBitCount=24;
        this->iv.m_obh.biSize = sizeof(BITMAPINFOHEADER);
        this->iv.m_obh.biCompression = 0;	//BI_RGB
        //this->iv.m_obh.biHeight = labs(this->iv.m_obh.biHeight);
        this->iv.m_obh.biSizeImage = labs(this->iv.m_obh.biWidth * this->iv.m_obh.biHeight)
                              * ((this->iv.m_obh.biBitCount + 7) / 8);


	this->m_pDMO_Filter = DMO_FilterCreate(dllname, guid, &this->m_sOurType, &this->m_sDestType);
	
	if (!this->m_pDMO_Filter)
	{
	    printf("Failed to create DMO filter\n");
	    return 0;
	}

	if (!flip)
	{
	    this->iv.m_obh.biHeight *= -1;
	    this->m_sVhdr2->bmiHeader.biHeight = this->iv.m_obh.biHeight;
//	    result = this->m_pDMO_Filter->m_pOutputPin->vt->QueryAccept(this->m_pDMO_Filter->m_pOutputPin, &this->m_sDestType);
	    result = this->m_pDMO_Filter->m_pMedia->vt->SetOutputType(this->m_pDMO_Filter->m_pMedia, 0, &this->m_sDestType, DMO_SET_TYPEF_TEST_ONLY);
	    if (result)
	    {
		printf("Decoder does not support upside-down RGB frames\n");
		this->iv.m_obh.biHeight *= -1;
		this->m_sVhdr2->bmiHeader.biHeight = this->iv.m_obh.biHeight;
	    }
	}

        memcpy( &this->iv.m_decoder, &this->iv.m_obh, sizeof(this->iv.m_obh) );

	switch (this->iv.m_bh->biCompression)
	{
#if 0
	case fccDIV3:
	case fccDIV4:
	case fccDIV5:
	case fccDIV6:
	case fccMP42:
	case fccWMV2:
	    //YV12 seems to be broken for DivX :-) codec
//	case fccIV50:
	    //produces incorrect picture
	    //m_Caps = (CAPS) (m_Caps & ~CAP_YV12);
	    //m_Caps = CAP_UYVY;//CAP_YUY2; // | CAP_I420;
	    //m_Caps = CAP_I420;
	    this->m_Caps = (CAP_YUY2 | CAP_UYVY);
	    break;
#endif
	default:
              
	    this->m_Caps = CAP_NONE;

	    printf("Decoder supports the following formats: ");
	    for (c = check; c->bits; c++)
	    {
		this->m_sVhdr2->bmiHeader.biBitCount = c->bits;
		this->m_sVhdr2->bmiHeader.biCompression = c->fcc;
		this->m_sDestType.subtype = *c->subtype;
		//result = this->m_pDMO_Filter->m_pOutputPin->vt->QueryAccept(this->m_pDMO_Filter->m_pOutputPin, &this->m_sDestType);
		result = this->m_pDMO_Filter->m_pMedia->vt->SetOutputType(this->m_pDMO_Filter->m_pMedia, 0, &this->m_sDestType, DMO_SET_TYPEF_TEST_ONLY);
		if (!result)
		{
		    this->m_Caps = (this->m_Caps | c->cap);
		    if (c->name)
			printf("%s ", c->name);
		    else
			printf("%.4s ", (char*) &c->fcc);
		}
	    }
	    printf("\n");
	}

	if (this->m_Caps != CAP_NONE)
	    printf("Decoder is capable of YUV output (flags 0x%x)\n", (int)this->m_Caps);

	this->m_sVhdr2->bmiHeader.biBitCount = 24;
	this->m_sVhdr2->bmiHeader.biCompression = 0;
	this->m_sDestType.subtype = MEDIASUBTYPE_RGB24;

	this->m_iMinBuffers = this->iv.VBUFSIZE;
    }
    /*catch (FatalError& error)
    {
        delete[] m_sVhdr;
	delete[] m_sVhdr2;
        delete m_pDMO_Filter;
	throw;
    }*/
    return this;
}

void DMO_VideoDecoder_Destroy(DMO_VideoDecoder *this)
{
    DMO_VideoDecoder_StopInternal(this);
    this->iv.m_State = STOP;
    free(this->m_sVhdr);
    free(this->m_sVhdr2);
    DMO_Filter_Destroy(this->m_pDMO_Filter);
}

void DMO_VideoDecoder_StartInternal(DMO_VideoDecoder *this)
{
#if 0
    ALLOCATOR_PROPERTIES props, props1;
    Debug printf("DMO_VideoDecoder_StartInternal\n");
    //cout << "DSSTART" << endl;
    this->m_pDMO_Filter->Start(this->m_pDMO_Filter);