119 lines
3.5 KiB
Text
119 lines
3.5 KiB
Text
$NetBSD: patch-ae,v 1.1.1.1 2004/01/26 11:36:38 jmmv Exp $
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--- imgsav.c.orig Sun Sep 26 16:35:06 1999
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+++ imgsav.c
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@@ -29,6 +29,7 @@
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/* ******************** Include Files ************** */
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+#include <png.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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@@ -254,6 +255,96 @@ void TVIMGSAVDoSaveTIFF( char filename[]
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}
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+void TVIMGSAVDoSavePNG( char filename[], TV_IMAGE *img )
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+{
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+ char errmsg[160];
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+ png_structp png_ptr;
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+ png_infop info_ptr;
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+ FILE *out;
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+ TV_INT32 linebytes,
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+ y,
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+ pass,
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+ compon;
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+ TV_UINT8 *buf;
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+
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+ buf = NULL;
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+ if ( img->pix_geom.type != TV_PIXELTYPE_RGB ) {
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+ fprintf( stderr, "Attempt to save non-RGB data as TIFF\n" );
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+ exit(1);
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+ }
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+
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+ /* Open output file */
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+ if ( (out = fopen( filename, "wb" )) == NULL ) {
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+ sprintf( errmsg, "Can't open output file '%s'", filename );
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+ XUTILDialogPause( TVTOPLEVEL, "Error", errmsg, TV_DIALOG_TYPE_OK );
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+ return;
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+ }
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+
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+ /* Create PNG data structures and initialize */
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+ png_ptr = png_create_write_struct
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+ (PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
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+ if (!png_ptr) {
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+ sprintf( errmsg, "Can't create PNG write structure" );
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+ XUTILDialogPause( TVTOPLEVEL, "Error", errmsg, TV_DIALOG_TYPE_OK );
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+ return;
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+ }
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+ info_ptr = png_create_info_struct(png_ptr);
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+ if (!info_ptr) {
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+ png_destroy_write_struct(&png_ptr, NULL);
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+ sprintf( errmsg, "Can't create PNG info structure" );
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+ XUTILDialogPause( TVTOPLEVEL, "Error", errmsg, TV_DIALOG_TYPE_OK );
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+ return;
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+ }
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+
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+ if (setjmp(png_jmpbuf(png_ptr))) {
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+ fprintf( stderr, "PNG write error\n" );
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+ XBell( TVDISPLAY, 100 );
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+ png_destroy_write_struct( &png_ptr, &info_ptr );
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+ free( buf );
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+ fclose( out );
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+ unlink( filename );
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+ return;
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+ }
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+ png_init_io(png_ptr, out);
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+ /* fast compression */
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+ png_set_compression_level(png_ptr, Z_BEST_SPEED);
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+
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+ /* Setup image format info (chunks) */
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+ png_set_IHDR(png_ptr, info_ptr, img->geom.w, img->geom.h,
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+ TV_BITS_PER_COMP, PNG_COLOR_TYPE_RGB /* XXX: ? */,
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+ PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT,
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+ PNG_FILTER_TYPE_DEFAULT);
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+ /* and write it */
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+ png_write_info(png_ptr, info_ptr);
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+ /* flush image out every 50 rows */
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+ png_set_flush(png_ptr, 50);
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+
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+ linebytes = img->geom.w * TV_BYTES_PER_PIX;
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+
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+ if ( (buf = malloc( linebytes )) == NULL )
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+ TVUTILOutOfMemory();
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+
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+ /* Convert & write the image data */
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+ for ( pass = 0; pass < 1; pass++ ) {
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+ compon = DoRed | DoGreen | DoBlue;
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+ for ( y = 0; y < img->geom.h; y++ ) {
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+
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+ /* Format scanline */
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+ TVIMGSAVFmtScanline24bpp( img, y, compon, buf );
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+
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+ /* And write it in PNG */
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+ png_write_row(png_ptr, buf);
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+ }
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+ }
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+
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+ /* All done. Close up shop and go home */
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+ png_write_end(png_ptr, NULL);
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+ png_destroy_write_struct(&png_ptr, &info_ptr);
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+ fclose(out);
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+ free( buf );
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+}
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+
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+
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void TVIMGSAVDoSavePPM( char filename[], TV_IMAGE *img )
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{
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static char *S_fp_buf = NULL;
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@@ -407,6 +498,9 @@ void TVIMGSAVDoSave( char filename[], TV
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exit(1);
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}
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TVIMGSAVDoSaveTIFF( filename, img ); break;
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+
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+ case TV_STILL_FMT_PNG :
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+ TVIMGSAVDoSavePNG ( filename, img ); break;
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case TV_STILL_FMT_PPM :
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TVIMGSAVDoSavePPM ( filename, img ); break;
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