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/*-
* Copyright (c) 1993-1995 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and the Network Research Group at
* Lawrence Berkeley Laboratory.
* 4. Neither the name of the University nor of the Laboratory may be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef vic_decoder_h
#define vic_decoder_h
extern "C" {
#include <tk.h>
}
#ifndef WIN32
#include <sys/param.h>
#include <sys/uio.h>
#endif
#include "sys-time.h"
#include "inet.h"
#include "rv.h"
#include "Tcl.h"
#include "source.h"
#include "ntp-time.h"
class Renderer;
class Assistor;
class VideoWindow;
struct dmabuf {
int shmid;
u_char* bp;
};
class Decoder : public PacketHandler {
protected:
Decoder(int hdrlen);
public:
virtual ~Decoder();
virtual int colorhist(u_int* histogram) const = 0;
/* statistics */
virtual void info(char* wrk) const;
virtual void stats(char* wrk);
static void allocshm(dmabuf&, int, int flag = 0);
static void freeshm(dmabuf&);
static double gettimeofday();
virtual int command(int argc, const char*const* argv);
virtual void resize(int inw, int inh);
inline int width() const { return (inw_); }
inline int height() const { return (inh_); }
inline int decimation() const { return (decimation_); }
inline int ndblk() const { return (ndblk_); }
inline void resetndblk() { ndblk_ = 0; }
void setcolor(int color);
protected:
/*XXX*/
#define MAXSTAT 16
struct statcntr {
const char* name;
u_int cnt;
} stat_[MAXSTAT];
int nstat_;
inline void count(int statno) { ++stat_[statno].cnt; }
inline void setstat(int statno, u_int v) { stat_[statno].cnt = v; }
/*XXX steal back from rcvr */
int color_;
int decimation_; /* 422 or 411 */
int inw_; /* native image width */
int inh_; /* native image height */
public:
/*
* Add or remove a window to the set of windows
* that this decoder outputs to.
*/
virtual void attach(Renderer*);
virtual void detach(Renderer*);
protected:
void redraw(const u_char* frm);
virtual void redraw() = 0;
Renderer* engines_;
void render_frame(const u_char* frm);
int now_;
u_char* rvts_;
int nblk_; /* number of 8x8 blocks */
int ndblk_; /* number of blocks decoded in most recent frame */
void colorhist_411_556(u_int* hist, const u_char* y, const u_char* u,
const u_char* v, int width, int height) const;
void colorhist_422_556(u_int* hist, const u_char* y, const u_char* u,
const u_char* v, int width, int height) const;
};
class PlaneDecoder : public Decoder {
public:
PlaneDecoder(int hdrlen);
virtual ~PlaneDecoder();
virtual int colorhist(u_int* histogram) const;
void sync();
protected:
void resize(int width, int height);
virtual void redraw();
u_char* frm_; /* storage for YUV representation */
};
#endif
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