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-rw-r--r--libxrdp/xrdp_jpeg_compress.c319
1 files changed, 163 insertions, 156 deletions
diff --git a/libxrdp/xrdp_jpeg_compress.c b/libxrdp/xrdp_jpeg_compress.c
index 8561982f..f8681e2b 100644
--- a/libxrdp/xrdp_jpeg_compress.c
+++ b/libxrdp/xrdp_jpeg_compress.c
@@ -1,24 +1,22 @@
-/*
- 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., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- xrdp: A Remote Desktop Protocol server.
- Copyright (C) Jay Sorg 2012
-
- jpeg compressor
-
-*/
+/**
+ * xrdp: A Remote Desktop Protocol server.
+ *
+ * Copyright (C) Jay Sorg 2004-2012
+ *
+ * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * jpeg compressor
+ */
#include "libxrdp.h"
@@ -33,10 +31,10 @@
struct mydata_comp
{
- char* cb;
- int cb_bytes;
- int total_done;
- int overwrite;
+ char *cb;
+ int cb_bytes;
+ int total_done;
+ int overwrite;
};
/*****************************************************************************/
@@ -44,13 +42,13 @@ struct mydata_comp
static void DEFAULT_CC
my_init_destination(j_compress_ptr cinfo)
{
- struct mydata_comp* md;
+ struct mydata_comp *md;
- md = (struct mydata_comp*)(cinfo->client_data);
- md->total_done = 0;
- md->overwrite = 0;
- cinfo->dest->next_output_byte = md->cb;
- cinfo->dest->free_in_buffer = md->cb_bytes;
+ md = (struct mydata_comp *)(cinfo->client_data);
+ md->total_done = 0;
+ md->overwrite = 0;
+ cinfo->dest->next_output_byte = md->cb;
+ cinfo->dest->free_in_buffer = md->cb_bytes;
}
/*****************************************************************************/
@@ -58,16 +56,16 @@ my_init_destination(j_compress_ptr cinfo)
static int DEFAULT_CC
my_empty_output_buffer(j_compress_ptr cinfo)
{
- struct mydata_comp* md;
- int chunk_bytes;
-
- md = (struct mydata_comp*)(cinfo->client_data);
- chunk_bytes = md->cb_bytes;
- md->total_done += chunk_bytes;
- cinfo->dest->next_output_byte = md->cb;
- cinfo->dest->free_in_buffer = md->cb_bytes;
- md->overwrite = 1;
- return 1;
+ struct mydata_comp *md;
+ int chunk_bytes;
+
+ md = (struct mydata_comp *)(cinfo->client_data);
+ chunk_bytes = md->cb_bytes;
+ md->total_done += chunk_bytes;
+ cinfo->dest->next_output_byte = md->cb;
+ cinfo->dest->free_in_buffer = md->cb_bytes;
+ md->overwrite = 1;
+ return 1;
}
/*****************************************************************************/
@@ -75,149 +73,158 @@ my_empty_output_buffer(j_compress_ptr cinfo)
static void DEFAULT_CC
my_term_destination(j_compress_ptr cinfo)
{
- struct mydata_comp* md;
- int chunk_bytes;
+ struct mydata_comp *md;
+ int chunk_bytes;
- md = (struct mydata_comp*)(cinfo->client_data);
- chunk_bytes = md->cb_bytes - cinfo->dest->free_in_buffer;
- md->total_done += chunk_bytes;
+ md = (struct mydata_comp *)(cinfo->client_data);
+ chunk_bytes = md->cb_bytes - cinfo->dest->free_in_buffer;
+ md->total_done += chunk_bytes;
}
/*****************************************************************************/
static int APP_CC
-jp_do_compress(char* data, int width, int height, int bpp, int quality,
- char* comp_data, int* comp_data_bytes)
+jp_do_compress(char *data, int width, int height, int bpp, int quality,
+ char *comp_data, int *comp_data_bytes)
{
- struct jpeg_compress_struct cinfo;
- struct jpeg_error_mgr jerr;
- struct jpeg_destination_mgr dst_mgr;
- struct mydata_comp md;
- JSAMPROW row_pointer[4];
- int Bpp;
-
- Bpp = (bpp + 7) / 8;
- memset(&cinfo, 0, sizeof(cinfo));
- cinfo.err = jpeg_std_error(&jerr);
- jpeg_create_compress(&cinfo);
- memset(&md, 0, sizeof(md));
- md.cb = comp_data,
- md.cb_bytes = *comp_data_bytes;
- cinfo.client_data = &md;
- memset(&dst_mgr, 0, sizeof(dst_mgr));
- dst_mgr.init_destination = my_init_destination;
- dst_mgr.empty_output_buffer = my_empty_output_buffer;
- dst_mgr.term_destination = my_term_destination;
- cinfo.dest = &dst_mgr;
- cinfo.image_width = width;
- cinfo.image_height = height;
- cinfo.input_components = Bpp;
- cinfo.in_color_space = JCS_RGB;
- jpeg_set_defaults(&cinfo);
- cinfo.num_components = 3;
- cinfo.dct_method = JDCT_FLOAT;
- jpeg_set_quality(&cinfo, quality, 1);
- jpeg_start_compress(&cinfo, 1);
- while (cinfo.next_scanline + 3 < cinfo.image_height)
- {
- row_pointer[0] = data;
- data += width * Bpp;
- row_pointer[1] = data;
- data += width * Bpp;
- row_pointer[2] = data;
- data += width * Bpp;
- row_pointer[3] = data;
- data += width * Bpp;
- jpeg_write_scanlines(&cinfo, row_pointer, 4);
- }
- while (cinfo.next_scanline < cinfo.image_height)
- {
- row_pointer[0] = data;
- data += width * Bpp;
- jpeg_write_scanlines(&cinfo, row_pointer, 1);
- }
- jpeg_finish_compress(&cinfo);
- *comp_data_bytes = md.total_done;
- jpeg_destroy_compress(&cinfo);
- if (md.overwrite)
- {
- return 1;
- }
- return 0;
+ struct jpeg_compress_struct cinfo;
+ struct jpeg_error_mgr jerr;
+ struct jpeg_destination_mgr dst_mgr;
+ struct mydata_comp md;
+ JSAMPROW row_pointer[4];
+ int Bpp;
+
+ Bpp = (bpp + 7) / 8;
+ memset(&cinfo, 0, sizeof(cinfo));
+ cinfo.err = jpeg_std_error(&jerr);
+ jpeg_create_compress(&cinfo);
+ memset(&md, 0, sizeof(md));
+ md.cb = comp_data,
+ md.cb_bytes = *comp_data_bytes;
+ cinfo.client_data = &md;
+ memset(&dst_mgr, 0, sizeof(dst_mgr));
+ dst_mgr.init_destination = my_init_destination;
+ dst_mgr.empty_output_buffer = my_empty_output_buffer;
+ dst_mgr.term_destination = my_term_destination;
+ cinfo.dest = &dst_mgr;
+ cinfo.image_width = width;
+ cinfo.image_height = height;
+ cinfo.input_components = Bpp;
+ cinfo.in_color_space = JCS_RGB;
+ jpeg_set_defaults(&cinfo);
+ cinfo.num_components = 3;
+ cinfo.dct_method = JDCT_FLOAT;
+ jpeg_set_quality(&cinfo, quality, 1);
+ jpeg_start_compress(&cinfo, 1);
+
+ while (cinfo.next_scanline + 3 < cinfo.image_height)
+ {
+ row_pointer[0] = data;
+ data += width * Bpp;
+ row_pointer[1] = data;
+ data += width * Bpp;
+ row_pointer[2] = data;
+ data += width * Bpp;
+ row_pointer[3] = data;
+ data += width * Bpp;
+ jpeg_write_scanlines(&cinfo, row_pointer, 4);
+ }
+
+ while (cinfo.next_scanline < cinfo.image_height)
+ {
+ row_pointer[0] = data;
+ data += width * Bpp;
+ jpeg_write_scanlines(&cinfo, row_pointer, 1);
+ }
+
+ jpeg_finish_compress(&cinfo);
+ *comp_data_bytes = md.total_done;
+ jpeg_destroy_compress(&cinfo);
+
+ if (md.overwrite)
+ {
+ return 1;
+ }
+
+ return 0;
}
/*****************************************************************************/
static int APP_CC
-jpeg_compress(char* in_data, int width, int height,
- struct stream* s, struct stream* temp_s, int bpp,
+jpeg_compress(char *in_data, int width, int height,
+ struct stream *s, struct stream *temp_s, int bpp,
int byte_limit, int e, int quality)
{
- char* data;
- tui32* src32;
- tui16* src16;
- tui8* dst8;
- tui32 pixel;
- int red;
- int blue;
- int green;
- int j;
- int i;
- int cdata_bytes;
-
- data = temp_s->data;
- dst8 = data;
- if (bpp == 24)
- {
- src32 = (tui32*)in_data;
- for (j = 0; j < height; j++)
+ char *data;
+ tui32 *src32;
+ tui16 *src16;
+ tui8 *dst8;
+ tui32 pixel;
+ int red;
+ int blue;
+ int green;
+ int j;
+ int i;
+ int cdata_bytes;
+
+ data = temp_s->data;
+ dst8 = data;
+
+ if (bpp == 24)
{
- for (i = 0; i < width; i++)
- {
- pixel = src32[i + j * width];
- SPLITCOLOR32(red, green, blue, pixel);
- *(dst8++)= blue;
- *(dst8++)= green;
- *(dst8++)= red;
- }
- for (i = 0; i < e; i++)
- {
- *(dst8++) = blue;
- *(dst8++) = green;
- *(dst8++) = red;
- }
+ src32 = (tui32 *)in_data;
+
+ for (j = 0; j < height; j++)
+ {
+ for (i = 0; i < width; i++)
+ {
+ pixel = src32[i + j * width];
+ SPLITCOLOR32(red, green, blue, pixel);
+ *(dst8++) = blue;
+ *(dst8++) = green;
+ *(dst8++) = red;
+ }
+
+ for (i = 0; i < e; i++)
+ {
+ *(dst8++) = blue;
+ *(dst8++) = green;
+ *(dst8++) = red;
+ }
+ }
}
- }
- else
- {
- g_writeln("bpp wrong %d", bpp);
- }
- cdata_bytes = byte_limit;
- jp_do_compress(data, width + e, height, 24, quality, s->p, &cdata_bytes);
- s->p += cdata_bytes;
- return cdata_bytes;
+ else
+ {
+ g_writeln("bpp wrong %d", bpp);
+ }
+
+ cdata_bytes = byte_limit;
+ jp_do_compress(data, width + e, height, 24, quality, s->p, &cdata_bytes);
+ s->p += cdata_bytes;
+ return cdata_bytes;
}
/*****************************************************************************/
int APP_CC
-xrdp_jpeg_compress(char* in_data, int width, int height,
- struct stream* s, int bpp, int byte_limit,
- int start_line, struct stream* temp_s,
+xrdp_jpeg_compress(char *in_data, int width, int height,
+ struct stream *s, int bpp, int byte_limit,
+ int start_line, struct stream *temp_s,
int e, int quality)
{
- jpeg_compress(in_data, width, height, s, temp_s, bpp, byte_limit,
- e, quality);
- return height;
+ jpeg_compress(in_data, width, height, s, temp_s, bpp, byte_limit,
+ e, quality);
+ return height;
}
#else
/*****************************************************************************/
int APP_CC
-xrdp_jpeg_compress(char* in_data, int width, int height,
- struct stream* s, int bpp, int byte_limit,
- int start_line, struct stream* temp_s,
+xrdp_jpeg_compress(char *in_data, int width, int height,
+ struct stream *s, int bpp, int byte_limit,
+ int start_line, struct stream *temp_s,
int e, int quality)
{
- return height;
+ return height;
}
#endif
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