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// Copyright (C) 1999-2015
// Smithsonian Astrophysical Observatory, Cambridge, MA, USA
// For conditions of distribution and use, see copyright notice in "copyright"
#include <iostream>
#include <sstream>
using namespace std;
#include <string.h>
#include <tk.h>
#include "tkmpeg.h"
extern "C" {
int Tkmpeg_Init(Tcl_Interp* interp);
int TkmpegCmd(ClientData data, Tcl_Interp *interp, int argc,
const char* argv[]);
}
TkMPEG* tkmpeg=NULL;
int Tkmpeg_Init(Tcl_Interp* interp) {
if (Tcl_InitStubs(interp, TCL_PATCH_LEVEL, 0) == NULL)
return TCL_ERROR;
if (Tk_InitStubs(interp, TK_PATCH_LEVEL, 0) == NULL)
return TCL_ERROR;
Tcl_CreateCommand(interp, "mpeg", TkmpegCmd,
(ClientData)NULL, (Tcl_CmdDeleteProc *)NULL);
if (Tcl_PkgProvide(interp, PACKAGE_NAME, PACKAGE_VERSION) != TCL_OK)
return TCL_ERROR;
tkmpeg = new TkMPEG(interp);
if (tkmpeg)
return TCL_OK;
else
return TCL_ERROR;
}
int TkmpegCmd(ClientData data,Tcl_Interp *interp,int argc,const char* argv[])
{
if (argc>=2) {
if (!strncmp(argv[1], "create", 3))
return tkmpeg->create(argc, argv);
else if (!strncmp(argv[1], "add", 3))
return tkmpeg->add(argc, argv);
else if (!strncmp(argv[1], "close", 3))
return tkmpeg->close(argc, argv);
else {
Tcl_AppendResult(interp, "tkmpeg: unknown command: ", argv[1], NULL);
return TCL_ERROR;
}
}
else {
Tcl_AppendResult(interp, "usage: tkmpeg ?create?close?add?", NULL);
return TCL_ERROR;
}
}
TkMPEG::TkMPEG(Tcl_Interp* intp)
{
interp = intp;
width = 512;
height = 512;
quality = 2;
}
int TkMPEG::create(int argc, const char* argv[])
{
if (argc == 8) {
if (*argv[2] == '\0') {
Tcl_AppendResult(interp, "bad filename", NULL);
return TCL_ERROR;
}
{
string s(argv[3]);
istringstream str(s);
str >> width;
}
{
string s(argv[4]);
istringstream str(s);
str >> height;
}
{
string s(argv[5]);
istringstream str(s);
str >> fps;
}
{
string s(argv[6]);
istringstream str(s);
str >> gop;
}
{
string s(argv[7]);
istringstream str(s);
str >> quality;
}
// width and height must be a multiple of 16
int ww = int(width/16.+1)*16;
int hh = int(height/16.+1)*16;
if(!ezMPEG_Init(&ms, argv[2], ww, hh, fps, gop, quality)) {
Tcl_AppendResult(interp, "ezMPEG_Init ", ezMPEG_GetLastError(&ms), NULL);
return TCL_ERROR;
}
if(!ezMPEG_Start(&ms)) {
Tcl_AppendResult(interp, "ezMPEG_Start ", ezMPEG_GetLastError(&ms),NULL);
return TCL_ERROR;
}
}
else {
Tcl_AppendResult(interp, "usage: tkmpeg create <filename> <width> <height> <fps> <gop> <quality>", NULL);
return TCL_ERROR;
}
return TCL_OK;
}
int TkMPEG::add(int argc, const char* argv[])
{
if (*argv[2] == '\0') {
Tcl_AppendResult(interp, "bad image name", NULL);
return TCL_ERROR;
}
Tk_PhotoHandle photo = Tk_FindPhoto(interp, argv[2]);
if (!photo) {
Tcl_AppendResult(interp, "bad image handle", NULL);
return TCL_ERROR;
}
Tk_PhotoImageBlock block;
if (!Tk_PhotoGetImage(photo,&block)) {
Tcl_AppendResult(interp, "bad image block", NULL);
return TCL_ERROR;
}
int ww = ms.hsize*16;
int hh = ms.vsize*16;
unsigned char* pict = new unsigned char[ww*hh*3];
if (!pict) {
Tcl_AppendResult(interp, "unable to alloc memory", NULL);
return TCL_ERROR;
}
memset(pict,0,ww*hh*3);
unsigned char* src = block.pixelPtr;
unsigned char* dst = pict;
for (int jj=0; jj<hh; jj++)
for (int ii=0; ii<ww; ii++) {
if (jj<height && ii<width) {
*dst++ = src[(jj*width+ii)*block.pixelSize+block.offset[0]];
*dst++ = src[(jj*width+ii)*block.pixelSize+block.offset[1]];
*dst++ = src[(jj*width+ii)*block.pixelSize+block.offset[2]];
}
else {
*dst++ = 255;
*dst++ = 255;
*dst++ = 255;
}
}
if(!ezMPEG_Add(&ms, pict)) {
Tcl_AppendResult(interp, "ezMPEG_Add ", ezMPEG_GetLastError(&ms), NULL);
if (pict)
delete [] pict;
return TCL_ERROR;
}
if (pict)
delete [] pict;
return TCL_OK;
}
int TkMPEG::close(int argc, const char* argv[])
{
if(!ezMPEG_Finalize(&ms)) {
Tcl_AppendResult(interp, "ezMPEG_Finalize", ezMPEG_GetLastError(&ms),NULL);
return TCL_ERROR;
}
return TCL_OK;
}
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