diff options
Diffstat (limited to 'ui/vnc-enc-tight.c')
| -rw-r--r-- | ui/vnc-enc-tight.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/ui/vnc-enc-tight.c b/ui/vnc-enc-tight.c index cc57c26796..e627e00dff 100644 --- a/ui/vnc-enc-tight.c +++ b/ui/vnc-enc-tight.c @@ -73,6 +73,21 @@ static int tight_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); #ifdef CONFIG_VNC_PNG +static const struct { + int png_zlib_level, png_filters; +} tight_png_conf[] = { + { 0, PNG_NO_FILTERS }, + { 1, PNG_NO_FILTERS }, + { 2, PNG_NO_FILTERS }, + { 3, PNG_NO_FILTERS }, + { 4, PNG_NO_FILTERS }, + { 5, PNG_ALL_FILTERS }, + { 6, PNG_ALL_FILTERS }, + { 7, PNG_ALL_FILTERS }, + { 8, PNG_ALL_FILTERS }, + { 9, PNG_ALL_FILTERS }, +}; + static int send_png_rect(VncState *vs, int x, int y, int w, int h, QDict *palette); @@ -1425,7 +1440,8 @@ static int send_png_rect(VncState *vs, int x, int y, int w, int h, png_infop info_ptr; png_colorp png_palette = NULL; size_t offset; - int level = tight_conf[vs->tight_compression].raw_zlib_level; + int level = tight_png_conf[vs->tight_compression].png_zlib_level; + int filters = tight_png_conf[vs->tight_compression].png_filters; uint8_t *buf; int dy; @@ -1444,6 +1460,7 @@ static int send_png_rect(VncState *vs, int x, int y, int w, int h, png_set_write_fn(png_ptr, (void *) vs, png_write_data, png_flush_data); png_set_compression_level(png_ptr, level); + png_set_filter(png_ptr, PNG_FILTER_TYPE_DEFAULT, filters); if (palette) { color_type = PNG_COLOR_TYPE_PALETTE; |