+++ /dev/null
-// jpgfactory.cxx -- jpeg frontend for TR library
-//
-// Written by Norman Vine, started August 2001.
-//
-// Copyright (C) 2001 Norman Vine - nhv@yahoo.com
-//
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License as
-// published by the Free Software Foundation; either version 2 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-// General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-//
-// $Id$
-
-
-#ifdef HAVE_CONFIG_H
-# include <simgear_config.h>
-#endif
-
-#ifdef HAVE_WINDOWS_H
-# include <windows.h>
-#endif
-
-#include "jpgfactory.hxx"
-#include <string.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-static void init_destination (j_compress_ptr cinfo);
-static void term_destination (j_compress_ptr cinfo);
-static boolean empty_output_buffer (j_compress_ptr cinfo);
-
-#ifdef __cplusplus
-}
-#endif
-
-// OSGFIME: offscreenrendering on osg - completely new context ...
-
-typedef struct {
- struct jpeg_destination_mgr pub; /* public fields */
- unsigned char * outfile; /* target stream */
- JOCTET * buffer; /* start of buffer */
- int numbytes; /* num bytes used */
- int maxsize; /* size of outfile */
- int error; /* error flag */
-} my_destination_mgr;
-
-typedef my_destination_mgr * my_dest_ptr;
-
-void (*jpgRenderFrame)(void) = NULL;
-
-trJpgFactory::trJpgFactory() {
- imageWidth = imageHeight = 0;
- tile = NULL;
- buffer = NULL;
- IMAGE = NULL;
- tr = NULL;
- cinfo.dest = NULL;
-}
-
-trJpgFactory::~trJpgFactory() {
- destroy();
-}
-
-/*
- * deallocate our dynamic parts
- */
-
-void trJpgFactory::destroy( int error )
-{
- if( error )
- printf( "!! Malloc Failure trJpgFactory ( %d )!!\n",
- error );
-
- if( cinfo.dest ) jpeg_destroy_compress(&cinfo);
- if( tr ) trDelete(tr);
- if( IMAGE ) delete [] IMAGE;
- if( buffer ) delete [] buffer;
- if( tile ) delete [] tile;
-}
-
-/*
- * allocate and initialize the jpeg compress struct
- * application needs to dealocate this
- */
-
-int trJpgFactory::jpeg_init()
-{
- j_compress_ptr cinfoPtr = &cinfo;
-
- cinfoPtr->err = jpeg_std_error(&jerr);
- jpeg_create_compress(cinfoPtr);
-
- /* following taken from jpeg library exaample code */
- cinfoPtr->dest = (struct jpeg_destination_mgr *)
- (*cinfoPtr->mem->alloc_small)
- ((j_common_ptr)cinfoPtr,
- JPOOL_PERMANENT,
- sizeof(my_destination_mgr));
-
- my_dest_ptr dest = (my_dest_ptr)cinfoPtr->dest;
-
- if( !dest ) {
- destroy(5);
- return 5;
- }
-
- dest->pub.init_destination = init_destination;
- dest->pub.empty_output_buffer = empty_output_buffer;
- dest->pub.term_destination = term_destination;
- dest->outfile = NULL;
- dest->numbytes = 0;
- dest->maxsize = 0;
-
- cinfoPtr->image_width = imageWidth;
- cinfoPtr->image_height = imageHeight;
- cinfoPtr->input_components = 3;
- cinfoPtr->in_color_space = JCS_RGB;
- jpeg_set_defaults(cinfoPtr);
- jpeg_set_quality(cinfoPtr, (100 * 90) >> 8, TRUE);
-
- return 0;
-}
-
-
-/*
- * may also be used as reinit() to change image size
- */
-
-int trJpgFactory::init(int width, int height )
-{
- destroy();
-
- if( width <= 0 || height <= 0 ) {
- imageWidth = DEFAULT_XS;
- imageHeight = DEFAULT_YS;
- } else {
- imageWidth = width;
- imageHeight = height;
- }
-
- int bufsize = imageWidth * imageHeight * 3 * sizeof(GLubyte);
-
- /* allocate buffer large enough to store one tile */
- tile = new GLubyte[bufsize];
- if (!tile) {
- destroy(1);
- return 1;
- }
-
- /* allocate buffer to hold a row of tiles */
- buffer = new GLubyte[ bufsize ];
- if (!buffer) {
- destroy(2);
- return 2;
- }
-
- /* this should be big enough */
- IMAGESIZE = bufsize + 1024;
- IMAGE = new unsigned char[ IMAGESIZE ];
- if( !IMAGE ) {
- destroy(3);
- return 3;
- }
-
- tr = trNew();
- if( !tr ) {
- destroy(4);
- return 4;
- }
-
- trRowOrder(tr, TR_TOP_TO_BOTTOM);
- trTileSize(tr, imageWidth, imageHeight, 0);
- trImageSize(tr, imageWidth, imageHeight);
- trTileBuffer(tr, GL_RGB, GL_UNSIGNED_BYTE, tile);
-
- return jpeg_init();
-}
-
-/*
- *compress the image
- */
-
-int trJpgFactory::compress()
-{
- JSAMPROW row_pointer[1];
- int row_stride;
-
- /* to keep track of jpeg library routines */
- my_dest_ptr dest = (my_dest_ptr) cinfo.dest;
-
- //printf("\tjpeg_start_compress(&cinfo, TRUE)\n");
- jpeg_start_compress(&cinfo, TRUE);
- if( !dest->error ) {
- dest->outfile = IMAGE;
- dest->maxsize = IMAGESIZE;
- row_stride = cinfo.image_width * 3;
-
- while( cinfo.next_scanline < cinfo.image_height &&
- !dest->error )
- {
- row_pointer[0] = buffer + (cinfo.next_scanline * row_stride);
- jpeg_write_scanlines(&cinfo, row_pointer, 1);
- }
- }
- if( !dest->error ) {
- // printf("\n\tBEFORE: jpeg_finish_compress(&cinfo)\n");
- jpeg_finish_compress(&cinfo);
- // printf("\tAFTER: jpeg_finish_compress(&cinfo)\n");
- } else {
- printf("INTERNAL JPEG_FACTORY ERROR\n");
- jpeg_abort_compress(&cinfo);
- /* OK - I am paranoid */
- dest->numbytes = 0;
- }
- return dest->numbytes;
-}
-
-/*
- * Makes the image then calls compress()
- */
-
-int trJpgFactory::render()
-{
- if( !tr || !jpgRenderFrame ) {
- printf("!! NO tr !!\n trJpgFactory::render()\n");
- return 0;
- }
-
- // Make sure we have SSG projection primed for current view
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
-
- /* just to be safe... */
- glPixelStorei(GL_PACK_ALIGNMENT, 1);
-
- // printf("\ttrBeginTile(tr)\n");
- trBeginTile(tr);
- jpgRenderFrame();
- trEndTile(tr);
-
- /* just to be safe */
- int curTileHeight = trGet(tr, TR_CURRENT_TILE_HEIGHT);
- int curTileWidth = trGet(tr, TR_CURRENT_TILE_WIDTH);
-
- /* reverse image top to bottom */
- int bytesPerImageRow = imageWidth * 3*sizeof(GLubyte);
- int bytesPerTileRow = imageWidth * 3*sizeof(GLubyte);
- int bytesPerCurrentTileRow = (curTileWidth) * 3*sizeof(GLubyte);
- int i;
- for (i=0;i<imageHeight;i++) {
- memcpy(buffer + (curTileHeight-1-i) * bytesPerImageRow, /* Dest */
- tile + i*bytesPerTileRow, /* Src */
- bytesPerCurrentTileRow); /* Byte count*/
- }
-
- // printf("exit trJpgFactory::render()\n");
- return compress();
-}
-
-
-#define OUTPUT_BUF_SIZE 4096
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/*
- * Initialize destination --- called by jpeg_start_compress
- * before any data is actually written.
- */
-
-static void init_destination (j_compress_ptr cinfo)
-{
- // printf("enter init_destination()\n");
- my_dest_ptr dest = (my_dest_ptr) cinfo->dest;
-
- /* following taken from jpeg library exaample code
- * Allocate the output buffer ---
- * it automaically will be released when done with image */
-
- dest->buffer = (JOCTET *)(*cinfo->mem->alloc_small)
- ((j_common_ptr)cinfo, JPOOL_IMAGE,
- OUTPUT_BUF_SIZE * sizeof(JOCTET) );
-
- if( !dest->buffer ) {
- printf("MALLOC FAILED jpegFactory init_destination()\n");
- dest->error = TRUE;
- } else {
- dest->error = FALSE;
- }
- dest->pub.next_output_byte = dest->buffer;
- dest->pub.free_in_buffer = OUTPUT_BUF_SIZE;
- dest->numbytes = 0;
-}
-
-/*
- * Empty the output buffer --- called whenever buffer fills up.
- */
-
-static boolean empty_output_buffer (j_compress_ptr cinfo)
-{
- // printf("enter empty_output_buffer(%d)\n", OUTPUT_BUF_SIZE);
- my_dest_ptr dest = (my_dest_ptr) cinfo->dest;
-
- if( (!dest->error) &&
- ((dest->numbytes + OUTPUT_BUF_SIZE) < dest->maxsize) )
- {
- memcpy( dest->outfile+dest->numbytes, dest->buffer, (size_t)OUTPUT_BUF_SIZE);
-
- dest->pub.next_output_byte = dest->buffer;
- dest->pub.free_in_buffer = OUTPUT_BUF_SIZE;
-
- dest->numbytes += OUTPUT_BUF_SIZE;
- } else {
- printf("BUFFER OVERFLOW jpegFactory empty_output_buffer()\n");
- dest->numbytes = 0;
- dest->error = TRUE;
- }
- return TRUE;
-}
-
-/*
- * Terminate destination --- called by jpeg_finish_compress
- * after all data has been written. Usually needs to flush buffer.
- *
- * NB: *not* called by jpeg_abort or jpeg_destroy; surrounding
- * application must deal with any cleanup that should happen even
- * for error exit.
- */
-
-static void term_destination (j_compress_ptr cinfo)
-{
- my_dest_ptr dest = (my_dest_ptr) cinfo->dest;
-
- size_t datacount = OUTPUT_BUF_SIZE - dest->pub.free_in_buffer;
-
- if( (!dest->error) &&
- ((dest->numbytes + datacount) < (unsigned int)dest->maxsize) )
- {
- memcpy( dest->outfile+dest->numbytes, dest->buffer, datacount);
- dest->numbytes += datacount;
- } else {
- printf("BUFFER OVERFLOW jpegFactory term_destination()\n");
- dest->numbytes = 0;
- dest->error = TRUE;
- }
- // printf(" term_destination(%d) total %d\n", datacount, dest->numbytes );
-}
-
-#ifdef __cplusplus
-}
-#endif
-
+++ /dev/null
-// jpgfactory.hxx -- jpeg frontend for TR library
-//
-// Written by Norman Vine, started August 2001.
-//
-// Copyright (C) 2001 Norman Vine - nhv@yahoo.com
-//
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License as
-// published by the Free Software Foundation; either version 2 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-// General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-//
-// $Id$
-
-#ifndef _FG_JPGFACTORY_HXX
-#define _FG_JPGFACTORY_HXX
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#ifdef HAVE_WINDOWS_H
-# define XMD_H // to avoid INT32 redefinition
-#endif
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <jpeglib.h>
-#include <jerror.h>
-
-#ifdef __cplusplus
-}
-#endif
-
-#include <simgear/screen/tr.h>
-
-
-extern void (*jpgRenderFrame)(void);
-
-/* should look at how VNC does this */
-class trJpgFactory {
- private:
- int imageWidth;
- int imageHeight;
- GLubyte *tile;
- GLubyte *buffer;
-
- TRcontext *tr;
- unsigned char *IMAGE;
- int IMAGESIZE;
-
- struct jpeg_compress_struct cinfo;
- struct jpeg_error_mgr jerr;
-
- int jpeg_init();
- int compress();
-
- typedef enum {
- DEFAULT_XS = 320,
- DEFAULT_YS = 240
- } JPG_FACTORY_ENUM;
-
- public:
- trJpgFactory();
- ~trJpgFactory();
-
- int init(int width = 0, int height = 0 );
- void destroy(int error = 0);
-
- int render();
- void setFrustum(GLdouble left, GLdouble right,
- GLdouble bottom, GLdouble top,
- GLdouble zNear, GLdouble zFar) { trFrustum(tr, left, right, bottom, top, zNear, zFar); }
-
- unsigned char *data() { return IMAGE ; }
-
- struct jpeg_compress_struct *JPGinfo() { return &cinfo ; }
-};
-
-#endif // #ifndef _FG_JPGFACTORY_HXX
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