+++ /dev/null
-/* === S Y N F I G ========================================================= */
-/*! \file mptr_jpeg.cpp
-** \brief ppm Target Module
-**
-** $Id$
-**
-** \legal
-** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
-**
-** This package 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 package 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.
-** \endlegal
-**
-** === N O T E S ===========================================================
-**
-** ========================================================================= */
-
-/*! \todo Support 16 bit JPEG files
-** \todo Support for paletted JPEG files
-** \todo Support GAMMA correction
-** \todo Fix memory leaks
-*/
-
-/* === H E A D E R S ======================================================= */
-
-#ifdef USING_PCH
-# include "pch.h"
-#else
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#include "mptr_jpeg.h"
-#include <synfig/importer.h>
-#include <synfig/time.h>
-#include <synfig/general.h>
-
-
-#include <cstdio>
-#include <algorithm>
-#include <functional>
-#endif
-
-/* === M A C R O S ========================================================= */
-
-using namespace synfig;
-using namespace std;
-using namespace etl;
-
-#define JPEG_CHECK_BYTES 8
-
-/* === G L O B A L S ======================================================= */
-
-SYNFIG_IMPORTER_INIT(jpeg_mptr);
-SYNFIG_IMPORTER_SET_NAME(jpeg_mptr,"jpeg");
-SYNFIG_IMPORTER_SET_EXT(jpeg_mptr,"jpg");
-SYNFIG_IMPORTER_SET_VERSION(jpeg_mptr,"0.1");
-SYNFIG_IMPORTER_SET_CVS_ID(jpeg_mptr,"$Id$");
-
-/* === M E T H O D S ======================================================= */
-
-struct my_error_mgr {
- struct jpeg_error_mgr pub; /* "public" fields */
-
- jmp_buf setjmp_buffer; /* for return to caller */
-};
-
-typedef struct my_error_mgr * my_error_ptr;
-
-/*
- * Here's the routine that will replace the standard error_exit method:
- */
-
-void
-jpeg_mptr::my_error_exit (j_common_ptr cinfo)
-{
- /* cinfo->err really points to a my_error_mgr struct, so coerce pointer */
- my_error_ptr myerr = (my_error_ptr) cinfo->err;
-
- /* Always display the message. */
- /* We could postpone this until after returning, if we chose. */
- (*cinfo->err->output_message) (cinfo);
-
- /* Return control to the setjmp point */
- longjmp(myerr->setjmp_buffer, 1);
-}
-
-
-
-
-
-jpeg_mptr::jpeg_mptr(const char *file_name)
-{
- struct my_error_mgr jerr;
- filename=file_name;
-
- /* Open the file pointer */
- FILE *file = fopen(file_name, "rb");
- if (!file)
- {
- //! \todo THROW SOMETHING
- throw String("error on importer construction, *WRITEME*1");
- return;
- }
-
- /* Step 1: allocate and initialize JPEG decompression object */
-
- /* We set up the normal JPEG error routines, then override error_exit. */
- cinfo.err = jpeg_std_error(&jerr.pub);
- jerr.pub.error_exit = my_error_exit;
- /* Establish the setjmp return context for my_error_exit to use. */
- if (setjmp(jerr.setjmp_buffer)) {
- /* If we get here, the JPEG code has signaled an error.
- * We need to clean up the JPEG object, close the input file, and return.
- */
- jpeg_destroy_decompress(&cinfo);
- fclose(file);
- throw String("error on importer construction, *WRITEME*2");
- }
- /* Now we can initialize the JPEG decompression object. */
- jpeg_create_decompress(&cinfo);
-
- /* Step 2: specify data source (eg, a file) */
-
- jpeg_stdio_src(&cinfo, file);
-
- /* Step 3: read file parameters with jpeg_read_header() */
-
- (void) jpeg_read_header(&cinfo, TRUE);
- /* We can ignore the return value from jpeg_read_header since
- * (a) suspension is not possible with the stdio data source, and
- * (b) we passed TRUE to reject a tables-only JPEG file as an error.
- * See libjpeg.doc for more info.
- */
-
- /* Step 4: set parameters for decompression */
-
- /* In this example, we don't need to change any of the defaults set by
- * jpeg_read_header(), so we do nothing here.
- */
-
- /* Step 5: Start decompressor */
-
- (void) jpeg_start_decompress(&cinfo);
- /* We can ignore the return value since suspension is not possible
- * with the stdio data source.
- */
-
- JSAMPARRAY buffer; /* Output row buffer */
- int row_stride; /* physical row width in output buffer */
- row_stride = cinfo.output_width * cinfo.output_components;
- /* Make a one-row-high sample array that will go away when done with image */
- buffer = (*cinfo.mem->alloc_sarray)((j_common_ptr) &cinfo, JPOOL_IMAGE, row_stride, 1);
-
- if(!buffer)
- {
- synfig::error("jpeg_mptr: error: alloc of \"buffer\" failed (bug?)");
- throw String("alloc of \"buffer\" failed (bug?)");
- }
-
- int x;
- int y;
- surface_buffer.set_wh(cinfo.output_width,cinfo.output_height);
-
- switch(cinfo.output_components)
- {
- case 3:
- for(y=0;y<surface_buffer.get_h();y++)
- {
- int x;
- jpeg_read_scanlines(&cinfo, buffer, 1);
- for(x=0;x<surface_buffer.get_w();x++)
- {
- float r=gamma().g_U8_to_F32((unsigned char)buffer[0][x*3+0]);
- float g=gamma().g_U8_to_F32((unsigned char)buffer[0][x*3+1]);
- float b=gamma().g_U8_to_F32((unsigned char)buffer[0][x*3+2]);
- surface_buffer[y][x]=Color(
- r,
- g,
- b,
- 1.0
- );
-/*
- surface_buffer[y][x]=Color(
- (float)(unsigned char)buffer[0][x*3+0]*(1.0/255.0),
- (float)(unsigned char)buffer[0][x*3+1]*(1.0/255.0),
- (float)(unsigned char)buffer[0][x*3+2]*(1.0/255.0),
- 1.0
- );
-*/
- }
- }
- break;
-
- case 1:
- for(y=0;y<surface_buffer.get_h();y++)
- {
- jpeg_read_scanlines(&cinfo, buffer, 1);
- for(x=0;x<surface_buffer.get_w();x++)
- {
- float gray=gamma().g_U8_to_F32((unsigned char)buffer[0][x]);
-// float gray=(float)(unsigned char)buffer[0][x]*(1.0/255.0);
- surface_buffer[y][x]=Color(
- gray,
- gray,
- gray,
- 1.0
- );
- }
- }
- break;
-
- default:
- synfig::error("jpeg_mptr: error: Unsupported color type");
- //! \todo THROW SOMETHING
- throw String("error on importer construction, *WRITEME*6");
- return;
- }
-
- /* Step 7: Finish decompression */
-
- (void) jpeg_finish_decompress(&cinfo);
- /* We can ignore the return value since suspension is not possible
- * with the stdio data source.
- */
-
- /* Step 8: Release JPEG decompression object */
-
- /* This is an important step since it will release a good deal of memory. */
- jpeg_destroy_decompress(&cinfo);
-
- /* After finish_decompress, we can close the input file.
- * Here we postpone it until after no more JPEG errors are possible,
- * so as to simplify the setjmp error logic above. (Actually, I don't
- * think that jpeg_destroy can do an error exit, but why assume anything...)
- */
- fclose(file);
-}
-
-jpeg_mptr::~jpeg_mptr()
-{
-}
-
-bool
-jpeg_mptr::get_frame(synfig::Surface &surface,Time, synfig::ProgressCallback */*cb*/)
-{
- surface=surface_buffer;
- return true;
-}
projects / synfig.git / blobdiff