mirror of
https://github.com/WinampDesktop/winamp.git
synced 2024-11-15 03:15:05 -05:00
98 lines
3.2 KiB
C++
98 lines
3.2 KiB
C++
/*
|
|
** dec_if.h - common decoder interface for nsvplay/nsvplayx
|
|
**
|
|
** Copyright (C) 2001-2003 Nullsoft, Inc.
|
|
**
|
|
** This software is provided 'as-is', without any express or implied warranty.
|
|
** In no event will the authors be held liable for any damages arising from the use of this software.
|
|
**
|
|
** Permission is granted to anyone to use this software for any purpose, including commercial
|
|
** applications, and to alter it and redistribute it freely, subject to the following restrictions:
|
|
** 1. The origin of this software must not be misrepresented; you must not claim that you wrote the
|
|
** original software. If you use this software in a product, an acknowledgment in the product
|
|
** documentation would be appreciated but is not required.
|
|
** 2. Altered source versions must be plainly marked as such, and must not be misrepresented as
|
|
** being the original software.
|
|
** 3. This notice may not be removed or altered from any source distribution.
|
|
**
|
|
*/
|
|
|
|
#ifndef _NSV_DEC_IF_H_
|
|
#define _NSV_DEC_IF_H_
|
|
|
|
#ifndef _WA_IPC_H_ // these are also defined in Winamp/wa_ipc.h
|
|
struct YV12_PLANE {
|
|
unsigned char* baseAddr;
|
|
long rowBytes;
|
|
} ;
|
|
|
|
struct YV12_PLANES {
|
|
YV12_PLANE y;
|
|
YV12_PLANE u;
|
|
YV12_PLANE v;
|
|
} ;
|
|
#endif
|
|
|
|
class IVideoDecoder
|
|
{
|
|
public:
|
|
virtual ~IVideoDecoder() { }
|
|
|
|
// decode returns 0 on success
|
|
// but *out can be NULL, meaning no new frame is available,
|
|
// but all is well
|
|
virtual 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)=0;
|
|
virtual void flush()=0;
|
|
};
|
|
|
|
class IAudioDecoder
|
|
{
|
|
public:
|
|
virtual ~IAudioDecoder() { }
|
|
|
|
// returns -1 on error, 0 on success (done with data in 'in'), 1 on success
|
|
// but to pass 'in' again next time around.
|
|
virtual int decode(void *in, int in_len,
|
|
void *out, int *out_len, // out_len is read and written to
|
|
unsigned int out_fmt[8])=0; // out_fmt is written to
|
|
// ex: 'PCM ', srate, nch, bps
|
|
// or 'NONE' :)
|
|
virtual void flush()=0;
|
|
};
|
|
|
|
class IAudioOutput
|
|
{
|
|
public:
|
|
virtual ~IAudioOutput() { }
|
|
virtual int canwrite()=0; // returns bytes writeable
|
|
virtual void write(void *buf, int len)=0;
|
|
virtual unsigned long long getpos()=0;
|
|
virtual unsigned long long getwritepos()=0;
|
|
virtual void flush(unsigned int newtime)=0;
|
|
virtual int isplaying(void) { return 1; }
|
|
virtual void pause(int pause) { }
|
|
virtual void setvolume(int volume) { }
|
|
virtual void setpan(int pan) { }
|
|
virtual void getdescstr(char *buf) { *buf=0; }
|
|
};
|
|
|
|
|
|
/*
|
|
** The DLL must export one of these symbols (unmangled, i.e. using extern "C).
|
|
**
|
|
** IAudioDecoder *CreateAudioDecoder(unsigned int type, IAudioOutput **output);
|
|
** IVideoDecoder *CreateVideoDecoder(int w, int h, double framerate, unsigned int type, int *flip);
|
|
**
|
|
** the functions should return NULL if the conversion is not possible (or
|
|
** is not the correct format)
|
|
**
|
|
** The DLL must be in <program files>\common files\nsv, and must be named
|
|
** nsvdec_*.dll.
|
|
**
|
|
*/
|
|
|
|
#endif//_NSV_DEC_IF_H_
|