winamp/Src/nsv/nsvplay/vp5stub.cpp

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2024-09-24 12:54:57 +00:00
#include <windows.h>
#include "../nsvlib.h"
#include "../dec_if.h"
#include "vfw.h"
class VP5_Decoder : public IVideoDecoder {
public:
VP5_Decoder(int w, int h);
~VP5_Decoder();
int decode(int need_kf,
void *in, int in_len,
void **out, // out is set to a pointer to data
unsigned int *out_type, // 'Y','V','1','2' is currently defined
int *is_kf);
void flush() { }
int m_err;
private:
int width,height;
BITMAPINFO vp5_bmo,vp5_bmi;
HIC vp5_hic;
unsigned char *vidbufdec;
};
VP5_Decoder::VP5_Decoder(int w, int h)
{
width=w;
height=h;
m_err=0;
vp5_hic=0;
vidbufdec=(unsigned char*)malloc(sizeof(YV12_PLANES) + w*h*3/2);
// init vp5 decode
memset((void *) &vp5_bmi,0,sizeof(BITMAPINFO));
memset((void *) &vp5_bmo,0,sizeof(BITMAPINFO));
vp5_bmi.bmiHeader.biCompression = mmioFOURCC('V','P','5','0');
vp5_bmi.bmiHeader.biHeight=h;
vp5_bmi.bmiHeader.biWidth =w;
vp5_bmo.bmiHeader.biCompression = mmioFOURCC('Y','V','1','2');
vp5_bmo.bmiHeader.biHeight=h;
vp5_bmo.bmiHeader.biWidth =w;
vp5_bmo.bmiHeader.biBitCount = 12;
vp5_hic = ICOpen(ICTYPE_VIDEO, vp5_bmi.bmiHeader.biCompression, ICMODE_DECOMPRESS);
vp5_bmo.bmiHeader.biHeight*=-1;
if(!vp5_hic || ICERR_OK !=ICDecompressBegin(vp5_hic, &vp5_bmi, &vp5_bmo))
{
m_err=1;
return;
}
}
VP5_Decoder::~VP5_Decoder()
{
if (vp5_hic)
{
ICDecompressEnd(vp5_hic);
ICClose(vp5_hic);
}
free(vidbufdec);
}
int VP5_Decoder::decode(int need_kf,
void *in, int in_len,
void **out, // out is set to a pointer to data
unsigned int *out_type, // 'Y','V','1','2' is currently defined
int *is_kf)
{
*out_type=NSV_MAKETYPE('Y','V','1','2');
vp5_bmi.bmiHeader.biSizeImage = in_len;
if(ICERR_OK == ICDecompress(vp5_hic,0,(BITMAPINFOHEADER *) &vp5_bmi, (char*)in,(BITMAPINFOHEADER *) &vp5_bmo, (char*)vidbufdec+sizeof(YV12_PLANES)))
{
*is_kf=!(!in_len || ((unsigned char *)in)[0] > 0x7f);
if (need_kf && !*is_kf)
{
return 0;
}
YV12_PLANES *image_vbd=(YV12_PLANES *)vidbufdec;
image_vbd->y.baseAddr=(unsigned char *)(image_vbd+1);
image_vbd->v.baseAddr=((unsigned char *)(image_vbd+1)) + width*height;
image_vbd->u.baseAddr=((unsigned char *)(image_vbd+1)) + width*height*5/4;
image_vbd->y.rowBytes=width;
image_vbd->v.rowBytes=width/2;
image_vbd->u.rowBytes=width/2;
*out=(void*)vidbufdec;
return 0;
}
return -1;
}
IVideoDecoder *VP5_CREATE(int w, int h, double framerate, unsigned int fmt, int *flip)
{
if (fmt == NSV_MAKETYPE('V','P','5','0'))
{
*flip=0;
VP5_Decoder *a=new VP5_Decoder(w,h);
if (a->m_err)
{
delete a;
return NULL;
}
return a;
}
return NULL;
}