diff options
Diffstat (limited to 'libs/cairo-1.16.0/src/cairo-deflate-stream.c')
| -rw-r--r-- | libs/cairo-1.16.0/src/cairo-deflate-stream.c | 156 |
1 files changed, 0 insertions, 156 deletions
diff --git a/libs/cairo-1.16.0/src/cairo-deflate-stream.c b/libs/cairo-1.16.0/src/cairo-deflate-stream.c deleted file mode 100644 index b51a639..0000000 --- a/libs/cairo-1.16.0/src/cairo-deflate-stream.c +++ /dev/null @@ -1,156 +0,0 @@ -/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */ -/* cairo - a vector graphics library with display and print output - * - * Copyright © 2006 Adrian Johnson - * - * This library is free software; you can redistribute it and/or - * modify it either under the terms of the GNU Lesser General Public - * License version 2.1 as published by the Free Software Foundation - * (the "LGPL") or, at your option, under the terms of the Mozilla - * Public License Version 1.1 (the "MPL"). If you do not alter this - * notice, a recipient may use your version of this file under either - * the MPL or the LGPL. - * - * You should have received a copy of the LGPL along with this library - * in the file COPYING-LGPL-2.1; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA - * You should have received a copy of the MPL along with this library - * in the file COPYING-MPL-1.1 - * - * The contents of this file are subject to the Mozilla Public License - * Version 1.1 (the "License"); you may not use this file except in - * compliance with the License. You may obtain a copy of the License at - * http://www.mozilla.org/MPL/ - * - * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY - * OF ANY KIND, either express or implied. See the LGPL or the MPL for - * the specific language governing rights and limitations. - * - * The Original Code is the cairo graphics library. - * - * The Initial Developer of the Original Code is Adrian Johnson. - * - * Author(s): - * Adrian Johnson <ajohnson@redneon.com> - */ - -#include "cairoint.h" - -#if CAIRO_HAS_DEFLATE_STREAM - -#include "cairo-error-private.h" -#include "cairo-output-stream-private.h" -#include <zlib.h> - -#define BUFFER_SIZE 16384 - -typedef struct _cairo_deflate_stream { - cairo_output_stream_t base; - cairo_output_stream_t *output; - z_stream zlib_stream; - unsigned char input_buf[BUFFER_SIZE]; - unsigned char output_buf[BUFFER_SIZE]; -} cairo_deflate_stream_t; - -static void -cairo_deflate_stream_deflate (cairo_deflate_stream_t *stream, cairo_bool_t flush) -{ - int ret; - cairo_bool_t finished; - - do { - ret = deflate (&stream->zlib_stream, flush ? Z_FINISH : Z_NO_FLUSH); - if (flush || stream->zlib_stream.avail_out == 0) - { - _cairo_output_stream_write (stream->output, - stream->output_buf, - BUFFER_SIZE - stream->zlib_stream.avail_out); - stream->zlib_stream.next_out = stream->output_buf; - stream->zlib_stream.avail_out = BUFFER_SIZE; - } - - finished = TRUE; - if (stream->zlib_stream.avail_in != 0) - finished = FALSE; - if (flush && ret != Z_STREAM_END) - finished = FALSE; - - } while (!finished); - - stream->zlib_stream.next_in = stream->input_buf; -} - -static cairo_status_t -_cairo_deflate_stream_write (cairo_output_stream_t *base, - const unsigned char *data, - unsigned int length) -{ - cairo_deflate_stream_t *stream = (cairo_deflate_stream_t *) base; - unsigned int count; - const unsigned char *p = data; - - while (length) { - count = length; - if (count > BUFFER_SIZE - stream->zlib_stream.avail_in) - count = BUFFER_SIZE - stream->zlib_stream.avail_in; - memcpy (stream->input_buf + stream->zlib_stream.avail_in, p, count); - p += count; - stream->zlib_stream.avail_in += count; - length -= count; - - if (stream->zlib_stream.avail_in == BUFFER_SIZE) - cairo_deflate_stream_deflate (stream, FALSE); - } - - return _cairo_output_stream_get_status (stream->output); -} - -static cairo_status_t -_cairo_deflate_stream_close (cairo_output_stream_t *base) -{ - cairo_deflate_stream_t *stream = (cairo_deflate_stream_t *) base; - - cairo_deflate_stream_deflate (stream, TRUE); - deflateEnd (&stream->zlib_stream); - - return _cairo_output_stream_get_status (stream->output); -} - -cairo_output_stream_t * -_cairo_deflate_stream_create (cairo_output_stream_t *output) -{ - cairo_deflate_stream_t *stream; - - if (output->status) - return _cairo_output_stream_create_in_error (output->status); - - stream = _cairo_malloc (sizeof (cairo_deflate_stream_t)); - if (unlikely (stream == NULL)) { - _cairo_error_throw (CAIRO_STATUS_NO_MEMORY); - return (cairo_output_stream_t *) &_cairo_output_stream_nil; - } - - _cairo_output_stream_init (&stream->base, - _cairo_deflate_stream_write, - NULL, - _cairo_deflate_stream_close); - stream->output = output; - - stream->zlib_stream.zalloc = Z_NULL; - stream->zlib_stream.zfree = Z_NULL; - stream->zlib_stream.opaque = Z_NULL; - - if (deflateInit (&stream->zlib_stream, Z_DEFAULT_COMPRESSION) != Z_OK) { - free (stream); - return (cairo_output_stream_t *) &_cairo_output_stream_nil; - } - - stream->zlib_stream.next_in = stream->input_buf; - stream->zlib_stream.avail_in = 0; - stream->zlib_stream.next_out = stream->output_buf; - stream->zlib_stream.avail_out = BUFFER_SIZE; - - return &stream->base; -} - -#endif /* CAIRO_HAS_DEFLATE_STREAM */ |