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* [PATCH v2 1/2] Replacing CONFIG_VNC_PNG with CONFIG_PNG
@ 2022-03-28 16:54 Kshitij Suri
  2022-03-28 16:54 ` [PATCH v2 2/2] Added parameter to take screenshot with screendump as PNG Kshitij Suri
  0 siblings, 1 reply; 22+ messages in thread
From: Kshitij Suri @ 2022-03-28 16:54 UTC (permalink / raw)
  To: qemu-devel
  Cc: soham.ghosh, thuth, berrange, prerna.saxena, dgilbert, armbru,
	Kshitij Suri, philippe.mathieu.daude, kraxel, prachatos.mitra,
	eblake

Libpng is only detected if VNC is enabled currently. This patch adds a
generalised png option in the meson build which is aimed to replace use of
CONFIG_VNC_PNG with CONFIG_PNG.

Signed-off-by: Kshitij Suri <kshitij.suri@nutanix.com>

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
---
 meson.build        |  9 ++++-----
 meson_options.txt  |  4 ++--
 ui/vnc-enc-tight.c | 18 +++++++++---------
 ui/vnc.c           |  4 ++--
 ui/vnc.h           |  2 +-
 5 files changed, 18 insertions(+), 19 deletions(-)

diff --git a/meson.build b/meson.build
index 282e7c4650..ccb6840a49 100644
--- a/meson.build
+++ b/meson.build
@@ -1115,14 +1115,13 @@ if gtkx11.found()
   x11 = dependency('x11', method: 'pkg-config', required: gtkx11.found(),
                    kwargs: static_kwargs)
 endif
+png = dependency('libpng', required: get_option('png'),
+                 method: 'pkg-config', kwargs: static_kwargs)
 vnc = not_found
-png = not_found
 jpeg = not_found
 sasl = not_found
 if get_option('vnc').allowed() and have_system
   vnc = declare_dependency() # dummy dependency
-  png = dependency('libpng', required: get_option('vnc_png'),
-                   method: 'pkg-config', kwargs: static_kwargs)
   jpeg = dependency('libjpeg', required: get_option('vnc_jpeg'),
                     method: 'pkg-config', kwargs: static_kwargs)
   sasl = cc.find_library('sasl2', has_headers: ['sasl/sasl.h'],
@@ -1554,9 +1553,9 @@ config_host_data.set('CONFIG_TPM', have_tpm)
 config_host_data.set('CONFIG_USB_LIBUSB', libusb.found())
 config_host_data.set('CONFIG_VDE', vde.found())
 config_host_data.set('CONFIG_VHOST_USER_BLK_SERVER', have_vhost_user_blk_server)
+config_host_data.set('CONFIG_PNG', png.found())
 config_host_data.set('CONFIG_VNC', vnc.found())
 config_host_data.set('CONFIG_VNC_JPEG', jpeg.found())
-config_host_data.set('CONFIG_VNC_PNG', png.found())
 config_host_data.set('CONFIG_VNC_SASL', sasl.found())
 config_host_data.set('CONFIG_VIRTFS', have_virtfs)
 config_host_data.set('CONFIG_VTE', vte.found())
@@ -3638,11 +3637,11 @@ summary_info += {'curses support':    curses}
 summary_info += {'virgl support':     virgl}
 summary_info += {'curl support':      curl}
 summary_info += {'Multipath support': mpathpersist}
+summary_info += {'PNG support':       png}
 summary_info += {'VNC support':       vnc}
 if vnc.found()
   summary_info += {'VNC SASL support':  sasl}
   summary_info += {'VNC JPEG support':  jpeg}
-  summary_info += {'VNC PNG support':   png}
 endif
 if targetos not in ['darwin', 'haiku', 'windows']
   summary_info += {'OSS support':     oss}
diff --git a/meson_options.txt b/meson_options.txt
index 52b11cead4..d85734f8e6 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -177,12 +177,12 @@ option('vde', type : 'feature', value : 'auto',
        description: 'vde network backend support')
 option('virglrenderer', type : 'feature', value : 'auto',
        description: 'virgl rendering support')
+option('png', type : 'feature', value : 'auto',
+       description: 'PNG support with libpng')
 option('vnc', type : 'feature', value : 'auto',
        description: 'VNC server')
 option('vnc_jpeg', type : 'feature', value : 'auto',
        description: 'JPEG lossy compression for VNC server')
-option('vnc_png', type : 'feature', value : 'auto',
-       description: 'PNG compression for VNC server')
 option('vnc_sasl', type : 'feature', value : 'auto',
        description: 'SASL authentication for VNC server')
 option('vte', type : 'feature', value : 'auto',
diff --git a/ui/vnc-enc-tight.c b/ui/vnc-enc-tight.c
index 7b86a4713d..e879cca7f5 100644
--- a/ui/vnc-enc-tight.c
+++ b/ui/vnc-enc-tight.c
@@ -32,7 +32,7 @@
    INT32 definitions between jmorecfg.h (included by jpeglib.h) and
    Win32 basetsd.h (included by windows.h). */
 
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
 /* The following define is needed by pngconf.h. Otherwise it won't compile,
    because setjmp.h was already included by qemu-common.h. */
 #define PNG_SKIP_SETJMP_CHECK
@@ -95,7 +95,7 @@ static const struct {
 };
 #endif
 
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
 static const struct {
     int png_zlib_level, png_filters;
 } tight_png_conf[] = {
@@ -919,7 +919,7 @@ static int send_full_color_rect(VncState *vs, int x, int y, int w, int h)
     int stream = 0;
     ssize_t bytes;
 
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     if (tight_can_send_png_rect(vs, w, h)) {
         return send_png_rect(vs, x, y, w, h, NULL);
     }
@@ -966,7 +966,7 @@ static int send_mono_rect(VncState *vs, int x, int y,
     int stream = 1;
     int level = tight_conf[vs->tight->compression].mono_zlib_level;
 
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     if (tight_can_send_png_rect(vs, w, h)) {
         int ret;
         int bpp = vs->client_pf.bytes_per_pixel * 8;
@@ -1020,7 +1020,7 @@ static int send_mono_rect(VncState *vs, int x, int y,
 struct palette_cb_priv {
     VncState *vs;
     uint8_t *header;
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     png_colorp png_palette;
 #endif
 };
@@ -1082,7 +1082,7 @@ static int send_palette_rect(VncState *vs, int x, int y,
     int colors;
     ssize_t bytes;
 
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     if (tight_can_send_png_rect(vs, w, h)) {
         return send_png_rect(vs, x, y, w, h, palette);
     }
@@ -1233,7 +1233,7 @@ static int send_jpeg_rect(VncState *vs, int x, int y, int w, int h, int quality)
 /*
  * PNG compression stuff.
  */
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
 static void write_png_palette(int idx, uint32_t pix, void *opaque)
 {
     struct palette_cb_priv *priv = opaque;
@@ -1379,7 +1379,7 @@ static int send_png_rect(VncState *vs, int x, int y, int w, int h,
     buffer_reset(&vs->tight->png);
     return 1;
 }
-#endif /* CONFIG_VNC_PNG */
+#endif /* CONFIG_PNG */
 
 static void vnc_tight_start(VncState *vs)
 {
@@ -1706,7 +1706,7 @@ void vnc_tight_clear(VncState *vs)
 #ifdef CONFIG_VNC_JPEG
     buffer_free(&vs->tight->jpeg);
 #endif
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     buffer_free(&vs->tight->png);
 #endif
 }
diff --git a/ui/vnc.c b/ui/vnc.c
index 310a873c21..8376291b47 100644
--- a/ui/vnc.c
+++ b/ui/vnc.c
@@ -2165,7 +2165,7 @@ static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
             vs->features |= VNC_FEATURE_TIGHT_MASK;
             vs->vnc_encoding = enc;
             break;
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
         case VNC_ENCODING_TIGHT_PNG:
             vs->features |= VNC_FEATURE_TIGHT_PNG_MASK;
             vs->vnc_encoding = enc;
@@ -3256,7 +3256,7 @@ static void vnc_connect(VncDisplay *vd, QIOChannelSocket *sioc,
 #ifdef CONFIG_VNC_JPEG
     buffer_init(&vs->tight->jpeg,     "vnc-tight-jpeg/%p", sioc);
 #endif
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     buffer_init(&vs->tight->png,      "vnc-tight-png/%p", sioc);
 #endif
     buffer_init(&vs->zlib.zlib,      "vnc-zlib/%p", sioc);
diff --git a/ui/vnc.h b/ui/vnc.h
index a7149831f9..a60fb13115 100644
--- a/ui/vnc.h
+++ b/ui/vnc.h
@@ -201,7 +201,7 @@ typedef struct VncTight {
 #ifdef CONFIG_VNC_JPEG
     Buffer jpeg;
 #endif
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     Buffer png;
 #endif
     int levels[4];
-- 
2.22.3



^ permalink raw reply related	[flat|nested] 22+ messages in thread

* [PATCH v2 2/2] Added parameter to take screenshot with screendump as PNG
  2022-03-28 16:54 [PATCH v2 1/2] Replacing CONFIG_VNC_PNG with CONFIG_PNG Kshitij Suri
@ 2022-03-28 16:54 ` Kshitij Suri
  2022-03-29  6:42   ` Markus Armbruster
  0 siblings, 1 reply; 22+ messages in thread
From: Kshitij Suri @ 2022-03-28 16:54 UTC (permalink / raw)
  To: qemu-devel
  Cc: soham.ghosh, thuth, berrange, prerna.saxena, dgilbert, armbru,
	Kshitij Suri, philippe.mathieu.daude, kraxel, prachatos.mitra,
	eblake

Currently screendump only supports PPM format, which is un-compressed and not
standard. Added a "format" parameter to qemu monitor screendump capabilites
to support PNG image capture using libpng. The param was added in QAPI schema
of screendump present in ui.json along with png_save() function which converts
pixman_image to PNG. HMP command equivalent was also modified to support the
feature.

Example usage:
{ "execute": "screendump", "arguments": { "filename": "/tmp/image",
"format":"png" } }

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/718

Signed-off-by: Kshitij Suri <kshitij.suri@nutanix.com>

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
---
 hmp-commands.hx    |  11 ++---
 monitor/hmp-cmds.c |  12 +++++-
 qapi/ui.json       |  24 +++++++++--
 ui/console.c       | 101 +++++++++++++++++++++++++++++++++++++++++++--
 4 files changed, 136 insertions(+), 12 deletions(-)

diff --git a/hmp-commands.hx b/hmp-commands.hx
index 8476277aa9..19b7cab595 100644
--- a/hmp-commands.hx
+++ b/hmp-commands.hx
@@ -244,11 +244,12 @@ ERST
 
     {
         .name       = "screendump",
-        .args_type  = "filename:F,device:s?,head:i?",
-        .params     = "filename [device [head]]",
-        .help       = "save screen from head 'head' of display device 'device' "
-                      "into PPM image 'filename'",
-        .cmd        = hmp_screendump,
+        .args_type  = "filename:F,format:s?,device:s?,head:i?",
+        .params     = "filename [format] [device [head]]",
+        .help       = "save screen from head 'head' of display device 'device'"
+                      "in specified format 'format' as image 'filename'."
+                      "Currently only 'png' and 'ppm' formats are supported.",
+         .cmd        = hmp_screendump,
         .coroutine  = true,
     },
 
diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c
index 634968498b..2442bfa989 100644
--- a/monitor/hmp-cmds.c
+++ b/monitor/hmp-cmds.c
@@ -1720,9 +1720,19 @@ hmp_screendump(Monitor *mon, const QDict *qdict)
     const char *filename = qdict_get_str(qdict, "filename");
     const char *id = qdict_get_try_str(qdict, "device");
     int64_t head = qdict_get_try_int(qdict, "head", 0);
+    const char *input_format  = qdict_get_try_str(qdict, "format");
     Error *err = NULL;
+    ImageFormat format;
 
-    qmp_screendump(filename, id != NULL, id, id != NULL, head, &err);
+    format = qapi_enum_parse(&ImageFormat_lookup, input_format,
+                              IMAGE_FORMAT_PPM, &err);
+    if (err) {
+        goto end;
+    }
+
+    qmp_screendump(filename, id != NULL, id, id != NULL, head,
+                   input_format != NULL, format, &err);
+end:
     hmp_handle_error(mon, err);
 }
 
diff --git a/qapi/ui.json b/qapi/ui.json
index 664da9e462..24371fce05 100644
--- a/qapi/ui.json
+++ b/qapi/ui.json
@@ -157,12 +157,27 @@
 ##
 { 'command': 'expire_password', 'boxed': true, 'data': 'ExpirePasswordOptions' }
 
+##
+# @ImageFormat:
+#
+# Supported image format types.
+#
+# @png: PNG format
+#
+# @ppm: PPM format
+#
+# Since: 7.1
+#
+##
+{ 'enum': 'ImageFormat',
+  'data': ['ppm', 'png'] }
+
 ##
 # @screendump:
 #
-# Write a PPM of the VGA screen to a file.
+# Capture the contents of a screen and write it to a file.
 #
-# @filename: the path of a new PPM file to store the image
+# @filename: the path of a new file to store the image
 #
 # @device: ID of the display device that should be dumped. If this parameter
 #          is missing, the primary display will be used. (Since 2.12)
@@ -171,6 +186,8 @@
 #        parameter is missing, head #0 will be used. Also note that the head
 #        can only be specified in conjunction with the device ID. (Since 2.12)
 #
+# @format: image format for screendump is specified. (default: ppm) (Since 7.1)
+#
 # Returns: Nothing on success
 #
 # Since: 0.14
@@ -183,7 +200,8 @@
 #
 ##
 { 'command': 'screendump',
-  'data': {'filename': 'str', '*device': 'str', '*head': 'int'},
+  'data': {'filename': 'str', '*device': 'str', '*head': 'int',
+           '*format': 'ImageFormat'},
   'coroutine': true }
 
 ##
diff --git a/ui/console.c b/ui/console.c
index da434ce1b2..f42f64d556 100644
--- a/ui/console.c
+++ b/ui/console.c
@@ -37,6 +37,9 @@
 #include "exec/memory.h"
 #include "io/channel-file.h"
 #include "qom/object.h"
+#ifdef CONFIG_PNG
+#include <png.h>
+#endif
 
 #define DEFAULT_BACKSCROLL 512
 #define CONSOLE_CURSOR_PERIOD 500
@@ -291,6 +294,89 @@ void graphic_hw_invalidate(QemuConsole *con)
     }
 }
 
+#ifdef CONFIG_PNG
+/**
+ * png_save: Take a screenshot as PNG
+ *
+ * Saves screendump as a PNG file
+ *
+ * Returns true for success or false for error.
+ *
+ * @fd: File descriptor for PNG file.
+ * @image: Image data in pixman format.
+ * @errp: Pointer to an error.
+ */
+static bool png_save(int fd, pixman_image_t *image, Error **errp)
+{
+    int width = pixman_image_get_width(image);
+    int height = pixman_image_get_height(image);
+    g_autofree png_struct *png_ptr = NULL;
+    g_autofree png_info *info_ptr = NULL;
+    g_autoptr(pixman_image_t) linebuf =
+                            qemu_pixman_linebuf_create(PIXMAN_a8r8g8b8, width);
+    uint8_t *buf = (uint8_t *)pixman_image_get_data(linebuf);
+    FILE *f = fdopen(fd, "wb");
+    int y;
+    if (!f) {
+        error_setg_errno(errp, errno,
+                         "Failed to create file from file descriptor");
+        return false;
+    }
+
+    png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL,
+                                      NULL, NULL);
+    if (!png_ptr) {
+        error_setg(errp, "PNG creation failed. Unable to write struct");
+        fclose(f);
+        return false;
+    }
+
+    info_ptr = png_create_info_struct(png_ptr);
+
+    if (!info_ptr) {
+        error_setg(errp, "PNG creation failed. Unable to write info");
+        fclose(f);
+        png_destroy_write_struct(&png_ptr, &info_ptr);
+        return false;
+    }
+
+    png_init_io(png_ptr, f);
+
+    png_set_IHDR(png_ptr, info_ptr, width, height, 8,
+                 PNG_COLOR_TYPE_RGB_ALPHA, PNG_INTERLACE_NONE,
+                 PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
+
+    png_write_info(png_ptr, info_ptr);
+
+    for (y = 0; y < height; ++y) {
+        qemu_pixman_linebuf_fill(linebuf, image, width, 0, y);
+        png_write_row(png_ptr, buf);
+    }
+    qemu_pixman_image_unref(linebuf);
+
+    png_write_end(png_ptr, NULL);
+
+    png_destroy_write_struct(&png_ptr, &info_ptr);
+
+    if (fclose(f) != 0) {
+        error_setg_errno(errp, errno,
+                         "PNG creation failed. Unable to close file");
+        return false;
+    }
+
+    return true;
+}
+
+#else /* no png support */
+
+static bool png_save(int fd, pixman_image_t *image, Error **errp)
+{
+    error_setg(errp, "Enable PNG support with libpng for screendump");
+    return false;
+}
+
+#endif /* CONFIG_PNG */
+
 static bool ppm_save(int fd, pixman_image_t *image, Error **errp)
 {
     int width = pixman_image_get_width(image);
@@ -329,7 +415,8 @@ static void graphic_hw_update_bh(void *con)
 /* Safety: coroutine-only, concurrent-coroutine safe, main thread only */
 void coroutine_fn
 qmp_screendump(const char *filename, bool has_device, const char *device,
-               bool has_head, int64_t head, Error **errp)
+               bool has_head, int64_t head,
+               bool has_format, ImageFormat format, Error **errp)
 {
     g_autoptr(pixman_image_t) image = NULL;
     QemuConsole *con;
@@ -385,8 +472,16 @@ qmp_screendump(const char *filename, bool has_device, const char *device,
      * yields and releases the BQL. It could produce corrupted dump, but
      * it should be otherwise safe.
      */
-    if (!ppm_save(fd, image, errp)) {
-        qemu_unlink(filename);
+    if (has_format && format == IMAGE_FORMAT_PNG) {
+        /* PNG format specified for screendump */
+        if (!png_save(fd, image, errp)) {
+            qemu_unlink(filename);
+        }
+    } else {
+        /* PPM format specified/default for screendump */
+        if (!ppm_save(fd, image, errp)) {
+            qemu_unlink(filename);
+        }
     }
 }
 
-- 
2.22.3



^ permalink raw reply related	[flat|nested] 22+ messages in thread

* Re: [PATCH v2 2/2] Added parameter to take screenshot with screendump as PNG
  2022-03-28 16:54 ` [PATCH v2 2/2] Added parameter to take screenshot with screendump as PNG Kshitij Suri
@ 2022-03-29  6:42   ` Markus Armbruster
  2022-03-29  7:06     ` Kshitij Suri
  0 siblings, 1 reply; 22+ messages in thread
From: Markus Armbruster @ 2022-03-29  6:42 UTC (permalink / raw)
  To: Kshitij Suri
  Cc: soham.ghosh, thuth, berrange, prerna.saxena, qemu-devel,
	dgilbert, philippe.mathieu.daude, kraxel, prachatos.mitra,
	eblake

If I count correctly, this is the fifth posting tagged "v2".  Don't do
that, please, as it's quite confusing.



^ permalink raw reply	[flat|nested] 22+ messages in thread

* Re: [PATCH v2 2/2] Added parameter to take screenshot with screendump as PNG
  2022-03-29  6:42   ` Markus Armbruster
@ 2022-03-29  7:06     ` Kshitij Suri
  2022-03-29  7:59       ` On patch series version tags, and also cover letters (was: [PATCH v2 2/2] Added parameter to take screenshot with screendump as PNG) Markus Armbruster
  0 siblings, 1 reply; 22+ messages in thread
From: Kshitij Suri @ 2022-03-29  7:06 UTC (permalink / raw)
  To: Markus Armbruster
  Cc: soham.ghosh, thuth, berrange, prerna.saxena, qemu-devel,
	dgilbert, philippe.mathieu.daude, kraxel, prachatos.mitra,
	eblake


On 29/03/22 12:12 pm, Markus Armbruster wrote:
> If I count correctly, this is the fifth posting tagged "v2".  Don't do
> that, please, as it's quite confusing.
>
Thank you for your review and I apologise for that since I am fairly new 
to upstreaming. As per what I read version updates should be done only 
when there are significant design changes to the patch which didn't 
happen in the v2 version. Will update it to v3 and send the patch.


Regards,

Kshitij Suri



^ permalink raw reply	[flat|nested] 22+ messages in thread

* On patch series version tags, and also cover letters (was: [PATCH v2 2/2] Added parameter to take screenshot with screendump as PNG)
  2022-03-29  7:06     ` Kshitij Suri
@ 2022-03-29  7:59       ` Markus Armbruster
  2022-03-29  8:57         ` Kshitij Suri
                           ` (2 more replies)
  0 siblings, 3 replies; 22+ messages in thread
From: Markus Armbruster @ 2022-03-29  7:59 UTC (permalink / raw)
  To: Kshitij Suri
  Cc: soham.ghosh, thuth, berrange, prerna.saxena, qemu-devel,
	dgilbert, philippe.mathieu.daude, kraxel, prachatos.mitra,
	eblake

Kshitij Suri <kshitij.suri@nutanix.com> writes:

> On 29/03/22 12:12 pm, Markus Armbruster wrote:
>> If I count correctly, this is the fifth posting tagged "v2".  Don't do
>> that, please, as it's quite confusing.
>>
> Thank you for your review and I apologise for that since I am fairly
> new to upstreaming. As per what I read version updates should be done
> only when there are significant design changes to the patch which
> didn't happen in the v2 version. Will update it to v3 and send the
> patch.

We all make mistakes :)

The purpose of the version tag in the subject is to help humans with
keeping track of patch submissions.  Increment it for every submission.

If you need to resend a submission completely unchanged for some reason,
you may want to keep the tag and add "RESEND".

A cover letter (git format-patch --cover-letter) lets you write an
introduction to the whole series.  Simple series may not need an
introduction, but complex ones do.  I always use one except when the
"series" is a single patch.

Keeping a change log in the cover letter helps people who already
reviewed previous iterations.

Check out

    https://lists.gnu.org/archive/html/qemu-devel/2022-03/msg03977.html

for an example.  Not every cover letter needs to be that verbose, of
course.  Likewise, the level of detail in change logs varies.

A good way to get a feel for good cover letters and commit messages is
to review patches.  What kind of information helps you as a reviewer?
That's the kind of information you want to provide with your
submissions.

Hope this helps!



^ permalink raw reply	[flat|nested] 22+ messages in thread

* Re: On patch series version tags, and also cover letters (was: [PATCH v2 2/2] Added parameter to take screenshot with screendump as PNG)
  2022-03-29  7:59       ` On patch series version tags, and also cover letters (was: [PATCH v2 2/2] Added parameter to take screenshot with screendump as PNG) Markus Armbruster
@ 2022-03-29  8:57         ` Kshitij Suri
  2022-03-29  9:01         ` Daniel P. Berrangé
  2022-03-29  9:48         ` Peter Maydell
  2 siblings, 0 replies; 22+ messages in thread
From: Kshitij Suri @ 2022-03-29  8:57 UTC (permalink / raw)
  To: Markus Armbruster
  Cc: soham.ghosh, thuth, berrange, prerna.saxena, qemu-devel,
	dgilbert, philippe.mathieu.daude, kraxel, prachatos.mitra,
	eblake


On 29/03/22 1:29 pm, Markus Armbruster wrote:
> Kshitij Suri <kshitij.suri@nutanix.com> writes:
>
>> On 29/03/22 12:12 pm, Markus Armbruster wrote:
>>> If I count correctly, this is the fifth posting tagged "v2".  Don't do
>>> that, please, as it's quite confusing.
>>>
>> Thank you for your review and I apologise for that since I am fairly
>> new to upstreaming. As per what I read version updates should be done
>> only when there are significant design changes to the patch which
>> didn't happen in the v2 version. Will update it to v3 and send the
>> patch.
> We all make mistakes :)
>
> The purpose of the version tag in the subject is to help humans with
> keeping track of patch submissions.  Increment it for every submission.
>
> If you need to resend a submission completely unchanged for some reason,
> you may want to keep the tag and add "RESEND".
>
> A cover letter (git format-patch --cover-letter) lets you write an
> introduction to the whole series.  Simple series may not need an
> introduction, but complex ones do.  I always use one except when the
> "series" is a single patch.
>
> Keeping a change log in the cover letter helps people who already
> reviewed previous iterations.
>
> Check out
>
>      https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.gnu.org_archive_html_qemu-2Ddevel_2022-2D03_msg03977.html&d=DwIBAg&c=s883GpUCOChKOHiocYtGcg&r=utjv19Ej9Fb0TB7_DX0o3faQ-OAm2ypPniPyqVSoj_w&m=D-rls6IoKGB-dpNu3-R_2PSp8HMjagXZU2NC6nqi6DhlurlWsW1vY9ip-7dSaSuv&s=kBAJFSYBE5TTs27r0Ycx7U2orcQfBt6L8Uslbk_X8xY&e=
>
> for an example.  Not every cover letter needs to be that verbose, of
> course.  Likewise, the level of detail in change logs varies.
>
> A good way to get a feel for good cover letters and commit messages is
> to review patches.  What kind of information helps you as a reviewer?
> That's the kind of information you want to provide with your
> submissions.
>
> Hope this helps!

This helps out a lot! Really grateful for this value packed mail! Will 
keep these points in mind while further upstreaming and versioning.

Thank you!

Regards,

Kshitij Suri



>


^ permalink raw reply	[flat|nested] 22+ messages in thread

* Re: On patch series version tags, and also cover letters (was: [PATCH v2 2/2] Added parameter to take screenshot with screendump as PNG)
  2022-03-29  7:59       ` On patch series version tags, and also cover letters (was: [PATCH v2 2/2] Added parameter to take screenshot with screendump as PNG) Markus Armbruster
  2022-03-29  8:57         ` Kshitij Suri
@ 2022-03-29  9:01         ` Daniel P. Berrangé
  2022-03-29  9:40           ` Kshitij Suri
  2022-03-29  9:48         ` Peter Maydell
  2 siblings, 1 reply; 22+ messages in thread
From: Daniel P. Berrangé @ 2022-03-29  9:01 UTC (permalink / raw)
  To: Markus Armbruster
  Cc: soham.ghosh, thuth, prerna.saxena, qemu-devel, dgilbert,
	Kshitij Suri, philippe.mathieu.daude, kraxel, prachatos.mitra,
	eblake

On Tue, Mar 29, 2022 at 09:59:55AM +0200, Markus Armbruster wrote:
> Kshitij Suri <kshitij.suri@nutanix.com> writes:
> 
> > On 29/03/22 12:12 pm, Markus Armbruster wrote:
> >> If I count correctly, this is the fifth posting tagged "v2".  Don't do
> >> that, please, as it's quite confusing.
> >>
> > Thank you for your review and I apologise for that since I am fairly
> > new to upstreaming. As per what I read version updates should be done
> > only when there are significant design changes to the patch which
> > didn't happen in the v2 version. Will update it to v3 and send the
> > patch.
> 
> We all make mistakes :)
> 
> The purpose of the version tag in the subject is to help humans with
> keeping track of patch submissions.  Increment it for every submission.
> 
> If you need to resend a submission completely unchanged for some reason,
> you may want to keep the tag and add "RESEND".
> 
> A cover letter (git format-patch --cover-letter) lets you write an
> introduction to the whole series.  Simple series may not need an
> introduction, but complex ones do.  I always use one except when the
> "series" is a single patch.
> 
> Keeping a change log in the cover letter helps people who already
> reviewed previous iterations.

FYI, using the 'git-publish' tool instead of 'git send-email' or
'git format-patch' helps you do all these things. It automatically
sets & increments the version number, it prompts for a cover letter
and remembers what you wrote next time. 

With regards,
Daniel
-- 
|: https://berrange.com      -o-    https://www.flickr.com/photos/dberrange :|
|: https://libvirt.org         -o-            https://fstop138.berrange.com :|
|: https://entangle-photo.org    -o-    https://www.instagram.com/dberrange :|



^ permalink raw reply	[flat|nested] 22+ messages in thread

* Re: On patch series version tags, and also cover letters (was: [PATCH v2 2/2] Added parameter to take screenshot with screendump as PNG)
  2022-03-29  9:01         ` Daniel P. Berrangé
@ 2022-03-29  9:40           ` Kshitij Suri
  0 siblings, 0 replies; 22+ messages in thread
From: Kshitij Suri @ 2022-03-29  9:40 UTC (permalink / raw)
  To: Daniel P. Berrangé, Markus Armbruster
  Cc: soham.ghosh, thuth, prerna.saxena, qemu-devel, dgilbert,
	philippe.mathieu.daude, kraxel, prachatos.mitra, eblake


On 29/03/22 2:31 pm, Daniel P. Berrangé wrote:
> On Tue, Mar 29, 2022 at 09:59:55AM +0200, Markus Armbruster wrote:
>> Kshitij Suri <kshitij.suri@nutanix.com> writes:
>>
>>> On 29/03/22 12:12 pm, Markus Armbruster wrote:
>>>> If I count correctly, this is the fifth posting tagged "v2".  Don't do
>>>> that, please, as it's quite confusing.
>>>>
>>> Thank you for your review and I apologise for that since I am fairly
>>> new to upstreaming. As per what I read version updates should be done
>>> only when there are significant design changes to the patch which
>>> didn't happen in the v2 version. Will update it to v3 and send the
>>> patch.
>> We all make mistakes :)
>>
>> The purpose of the version tag in the subject is to help humans with
>> keeping track of patch submissions.  Increment it for every submission.
>>
>> If you need to resend a submission completely unchanged for some reason,
>> you may want to keep the tag and add "RESEND".
>>
>> A cover letter (git format-patch --cover-letter) lets you write an
>> introduction to the whole series.  Simple series may not need an
>> introduction, but complex ones do.  I always use one except when the
>> "series" is a single patch.
>>
>> Keeping a change log in the cover letter helps people who already
>> reviewed previous iterations.
> FYI, using the 'git-publish' tool instead of 'git send-email' or
> 'git format-patch' helps you do all these things. It automatically
> sets & increments the version number, it prompts for a cover letter
> and remembers what you wrote next time.
>
> With regards,
> Daniel
Oh didn't know about it, will try to use git-publish from now on. Thank 
you for your guidance for support throughout the issue!


Regards,
Kshitij Suri


^ permalink raw reply	[flat|nested] 22+ messages in thread

* Re: On patch series version tags, and also cover letters (was: [PATCH v2 2/2] Added parameter to take screenshot with screendump as PNG)
  2022-03-29  7:59       ` On patch series version tags, and also cover letters (was: [PATCH v2 2/2] Added parameter to take screenshot with screendump as PNG) Markus Armbruster
  2022-03-29  8:57         ` Kshitij Suri
  2022-03-29  9:01         ` Daniel P. Berrangé
@ 2022-03-29  9:48         ` Peter Maydell
  2022-03-29  9:55           ` Kshitij Suri
  2 siblings, 1 reply; 22+ messages in thread
From: Peter Maydell @ 2022-03-29  9:48 UTC (permalink / raw)
  To: Markus Armbruster
  Cc: soham.ghosh, berrange, prerna.saxena, qemu-devel, dgilbert,
	Kshitij Suri, philippe.mathieu.daude, kraxel, thuth,
	prachatos.mitra, eblake

On Tue, 29 Mar 2022 at 09:03, Markus Armbruster <armbru@redhat.com> wrote:
> A cover letter (git format-patch --cover-letter) lets you write an
> introduction to the whole series.  Simple series may not need an
> introduction, but complex ones do.  I always use one except when the
> "series" is a single patch.

Note that a multi-patch series always needs a cover letter,
even if its contents are quite brief. Some of the automatic
tooling gets confused by multi-patch series with no cover letter.
Conversely, single patches shouldn't have a cover letter, although
getting that one wrong doesn't really have much ill effect.

thanks
-- PMM


^ permalink raw reply	[flat|nested] 22+ messages in thread

* Re: On patch series version tags, and also cover letters (was: [PATCH v2 2/2] Added parameter to take screenshot with screendump as PNG)
  2022-03-29  9:48         ` Peter Maydell
@ 2022-03-29  9:55           ` Kshitij Suri
  2022-03-29  9:59             ` Peter Maydell
  0 siblings, 1 reply; 22+ messages in thread
From: Kshitij Suri @ 2022-03-29  9:55 UTC (permalink / raw)
  To: Peter Maydell, Markus Armbruster
  Cc: soham.ghosh, berrange, prerna.saxena, qemu-devel, dgilbert,
	philippe.mathieu.daude, kraxel, thuth, prachatos.mitra, eblake


On 29/03/22 3:18 pm, Peter Maydell wrote:
> On Tue, 29 Mar 2022 at 09:03, Markus Armbruster <armbru@redhat.com> wrote:
>> A cover letter (git format-patch --cover-letter) lets you write an
>> introduction to the whole series.  Simple series may not need an
>> introduction, but complex ones do.  I always use one except when the
>> "series" is a single patch.
> Note that a multi-patch series always needs a cover letter,
> even if its contents are quite brief. Some of the automatic
> tooling gets confused by multi-patch series with no cover letter.
> Conversely, single patches shouldn't have a cover letter, although
> getting that one wrong doesn't really have much ill effect.
>
> thanks
> -- PMM
Oh so regarding this PNG issue which has 2 patches, one to phase out 
VNC_PNG and one for core logic, should I send with a cover-letter?

Thank you for our advice!

Regards,

Kshitij Suri



^ permalink raw reply	[flat|nested] 22+ messages in thread

* Re: On patch series version tags, and also cover letters (was: [PATCH v2 2/2] Added parameter to take screenshot with screendump as PNG)
  2022-03-29  9:55           ` Kshitij Suri
@ 2022-03-29  9:59             ` Peter Maydell
  0 siblings, 0 replies; 22+ messages in thread
From: Peter Maydell @ 2022-03-29  9:59 UTC (permalink / raw)
  To: Kshitij Suri
  Cc: thuth, berrange, prerna.saxena, Markus Armbruster, soham.ghosh,
	qemu-devel, philippe.mathieu.daude, kraxel, prachatos.mitra,
	eblake, dgilbert

On Tue, 29 Mar 2022 at 10:55, Kshitij Suri <kshitij.suri@nutanix.com> wrote:
> On 29/03/22 3:18 pm, Peter Maydell wrote:
> > Note that a multi-patch series always needs a cover letter,
> > even if its contents are quite brief. Some of the automatic
> > tooling gets confused by multi-patch series with no cover letter.
> > Conversely, single patches shouldn't have a cover letter, although
> > getting that one wrong doesn't really have much ill effect.

> Oh so regarding this PNG issue which has 2 patches, one to phase out
> VNC_PNG and one for core logic, should I send with a cover-letter?

Yes. There is more than one patch, so you must provide a cover letter.

thanks
-- PMM


^ permalink raw reply	[flat|nested] 22+ messages in thread

* Re: [PATCH v2 1/2] Replacing CONFIG_VNC_PNG with CONFIG_PNG
  2022-03-22 10:49 [PATCH v2 1/2] Replacing CONFIG_VNC_PNG with CONFIG_PNG Kshitij Suri
@ 2022-03-28  9:49 ` Kshitij Suri
  0 siblings, 0 replies; 22+ messages in thread
From: Kshitij Suri @ 2022-03-28  9:49 UTC (permalink / raw)
  To: qemu-devel
  Cc: soham.ghosh, thuth, berrange, prerna.saxena, dgilbert, armbru,
	philippe.mathieu.daude, kraxel, prachatos.mitra, eblake

Hi, Hope this mail finds you well. I have updated the code as required 
and would be grateful if you could review and suggest changes that are 
needed to be implemented. In case no change is required, please do let 
me know the next steps for the same.

Regards,

Kshitij Suri

On 22/03/22 4:19 pm, Kshitij Suri wrote:
> Libpng is only detected if VNC is enabled currently. This patch adds a
> generalised png option in the meson build which is aimed to replace use of
> CONFIG_VNC_PNG with CONFIG_PNG.
>
> Signed-off-by: Kshitij Suri <kshitij.suri@nutanix.com>
>
> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
> ---
>   meson.build        |  9 ++++-----
>   meson_options.txt  |  4 ++--
>   ui/vnc-enc-tight.c | 18 +++++++++---------
>   ui/vnc.c           |  4 ++--
>   ui/vnc.h           |  2 +-
>   5 files changed, 18 insertions(+), 19 deletions(-)
>
> diff --git a/meson.build b/meson.build
> index 282e7c4650..ccb6840a49 100644
> --- a/meson.build
> +++ b/meson.build
> @@ -1115,14 +1115,13 @@ if gtkx11.found()
>     x11 = dependency('x11', method: 'pkg-config', required: gtkx11.found(),
>                      kwargs: static_kwargs)
>   endif
> +png = dependency('libpng', required: get_option('png'),
> +                 method: 'pkg-config', kwargs: static_kwargs)
>   vnc = not_found
> -png = not_found
>   jpeg = not_found
>   sasl = not_found
>   if get_option('vnc').allowed() and have_system
>     vnc = declare_dependency() # dummy dependency
> -  png = dependency('libpng', required: get_option('vnc_png'),
> -                   method: 'pkg-config', kwargs: static_kwargs)
>     jpeg = dependency('libjpeg', required: get_option('vnc_jpeg'),
>                       method: 'pkg-config', kwargs: static_kwargs)
>     sasl = cc.find_library('sasl2', has_headers: ['sasl/sasl.h'],
> @@ -1554,9 +1553,9 @@ config_host_data.set('CONFIG_TPM', have_tpm)
>   config_host_data.set('CONFIG_USB_LIBUSB', libusb.found())
>   config_host_data.set('CONFIG_VDE', vde.found())
>   config_host_data.set('CONFIG_VHOST_USER_BLK_SERVER', have_vhost_user_blk_server)
> +config_host_data.set('CONFIG_PNG', png.found())
>   config_host_data.set('CONFIG_VNC', vnc.found())
>   config_host_data.set('CONFIG_VNC_JPEG', jpeg.found())
> -config_host_data.set('CONFIG_VNC_PNG', png.found())
>   config_host_data.set('CONFIG_VNC_SASL', sasl.found())
>   config_host_data.set('CONFIG_VIRTFS', have_virtfs)
>   config_host_data.set('CONFIG_VTE', vte.found())
> @@ -3638,11 +3637,11 @@ summary_info += {'curses support':    curses}
>   summary_info += {'virgl support':     virgl}
>   summary_info += {'curl support':      curl}
>   summary_info += {'Multipath support': mpathpersist}
> +summary_info += {'PNG support':       png}
>   summary_info += {'VNC support':       vnc}
>   if vnc.found()
>     summary_info += {'VNC SASL support':  sasl}
>     summary_info += {'VNC JPEG support':  jpeg}
> -  summary_info += {'VNC PNG support':   png}
>   endif
>   if targetos not in ['darwin', 'haiku', 'windows']
>     summary_info += {'OSS support':     oss}
> diff --git a/meson_options.txt b/meson_options.txt
> index 52b11cead4..d85734f8e6 100644
> --- a/meson_options.txt
> +++ b/meson_options.txt
> @@ -177,12 +177,12 @@ option('vde', type : 'feature', value : 'auto',
>          description: 'vde network backend support')
>   option('virglrenderer', type : 'feature', value : 'auto',
>          description: 'virgl rendering support')
> +option('png', type : 'feature', value : 'auto',
> +       description: 'PNG support with libpng')
>   option('vnc', type : 'feature', value : 'auto',
>          description: 'VNC server')
>   option('vnc_jpeg', type : 'feature', value : 'auto',
>          description: 'JPEG lossy compression for VNC server')
> -option('vnc_png', type : 'feature', value : 'auto',
> -       description: 'PNG compression for VNC server')
>   option('vnc_sasl', type : 'feature', value : 'auto',
>          description: 'SASL authentication for VNC server')
>   option('vte', type : 'feature', value : 'auto',
> diff --git a/ui/vnc-enc-tight.c b/ui/vnc-enc-tight.c
> index 7b86a4713d..e879cca7f5 100644
> --- a/ui/vnc-enc-tight.c
> +++ b/ui/vnc-enc-tight.c
> @@ -32,7 +32,7 @@
>      INT32 definitions between jmorecfg.h (included by jpeglib.h) and
>      Win32 basetsd.h (included by windows.h). */
>   
> -#ifdef CONFIG_VNC_PNG
> +#ifdef CONFIG_PNG
>   /* The following define is needed by pngconf.h. Otherwise it won't compile,
>      because setjmp.h was already included by qemu-common.h. */
>   #define PNG_SKIP_SETJMP_CHECK
> @@ -95,7 +95,7 @@ static const struct {
>   };
>   #endif
>   
> -#ifdef CONFIG_VNC_PNG
> +#ifdef CONFIG_PNG
>   static const struct {
>       int png_zlib_level, png_filters;
>   } tight_png_conf[] = {
> @@ -919,7 +919,7 @@ static int send_full_color_rect(VncState *vs, int x, int y, int w, int h)
>       int stream = 0;
>       ssize_t bytes;
>   
> -#ifdef CONFIG_VNC_PNG
> +#ifdef CONFIG_PNG
>       if (tight_can_send_png_rect(vs, w, h)) {
>           return send_png_rect(vs, x, y, w, h, NULL);
>       }
> @@ -966,7 +966,7 @@ static int send_mono_rect(VncState *vs, int x, int y,
>       int stream = 1;
>       int level = tight_conf[vs->tight->compression].mono_zlib_level;
>   
> -#ifdef CONFIG_VNC_PNG
> +#ifdef CONFIG_PNG
>       if (tight_can_send_png_rect(vs, w, h)) {
>           int ret;
>           int bpp = vs->client_pf.bytes_per_pixel * 8;
> @@ -1020,7 +1020,7 @@ static int send_mono_rect(VncState *vs, int x, int y,
>   struct palette_cb_priv {
>       VncState *vs;
>       uint8_t *header;
> -#ifdef CONFIG_VNC_PNG
> +#ifdef CONFIG_PNG
>       png_colorp png_palette;
>   #endif
>   };
> @@ -1082,7 +1082,7 @@ static int send_palette_rect(VncState *vs, int x, int y,
>       int colors;
>       ssize_t bytes;
>   
> -#ifdef CONFIG_VNC_PNG
> +#ifdef CONFIG_PNG
>       if (tight_can_send_png_rect(vs, w, h)) {
>           return send_png_rect(vs, x, y, w, h, palette);
>       }
> @@ -1233,7 +1233,7 @@ static int send_jpeg_rect(VncState *vs, int x, int y, int w, int h, int quality)
>   /*
>    * PNG compression stuff.
>    */
> -#ifdef CONFIG_VNC_PNG
> +#ifdef CONFIG_PNG
>   static void write_png_palette(int idx, uint32_t pix, void *opaque)
>   {
>       struct palette_cb_priv *priv = opaque;
> @@ -1379,7 +1379,7 @@ static int send_png_rect(VncState *vs, int x, int y, int w, int h,
>       buffer_reset(&vs->tight->png);
>       return 1;
>   }
> -#endif /* CONFIG_VNC_PNG */
> +#endif /* CONFIG_PNG */
>   
>   static void vnc_tight_start(VncState *vs)
>   {
> @@ -1706,7 +1706,7 @@ void vnc_tight_clear(VncState *vs)
>   #ifdef CONFIG_VNC_JPEG
>       buffer_free(&vs->tight->jpeg);
>   #endif
> -#ifdef CONFIG_VNC_PNG
> +#ifdef CONFIG_PNG
>       buffer_free(&vs->tight->png);
>   #endif
>   }
> diff --git a/ui/vnc.c b/ui/vnc.c
> index 310a873c21..8376291b47 100644
> --- a/ui/vnc.c
> +++ b/ui/vnc.c
> @@ -2165,7 +2165,7 @@ static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
>               vs->features |= VNC_FEATURE_TIGHT_MASK;
>               vs->vnc_encoding = enc;
>               break;
> -#ifdef CONFIG_VNC_PNG
> +#ifdef CONFIG_PNG
>           case VNC_ENCODING_TIGHT_PNG:
>               vs->features |= VNC_FEATURE_TIGHT_PNG_MASK;
>               vs->vnc_encoding = enc;
> @@ -3256,7 +3256,7 @@ static void vnc_connect(VncDisplay *vd, QIOChannelSocket *sioc,
>   #ifdef CONFIG_VNC_JPEG
>       buffer_init(&vs->tight->jpeg,     "vnc-tight-jpeg/%p", sioc);
>   #endif
> -#ifdef CONFIG_VNC_PNG
> +#ifdef CONFIG_PNG
>       buffer_init(&vs->tight->png,      "vnc-tight-png/%p", sioc);
>   #endif
>       buffer_init(&vs->zlib.zlib,      "vnc-zlib/%p", sioc);
> diff --git a/ui/vnc.h b/ui/vnc.h
> index a7149831f9..a60fb13115 100644
> --- a/ui/vnc.h
> +++ b/ui/vnc.h
> @@ -201,7 +201,7 @@ typedef struct VncTight {
>   #ifdef CONFIG_VNC_JPEG
>       Buffer jpeg;
>   #endif
> -#ifdef CONFIG_VNC_PNG
> +#ifdef CONFIG_PNG
>       Buffer png;
>   #endif
>       int levels[4];


^ permalink raw reply	[flat|nested] 22+ messages in thread

* [PATCH v2 1/2] Replacing CONFIG_VNC_PNG with CONFIG_PNG
@ 2022-03-22 10:49 Kshitij Suri
  2022-03-28  9:49 ` Kshitij Suri
  0 siblings, 1 reply; 22+ messages in thread
From: Kshitij Suri @ 2022-03-22 10:49 UTC (permalink / raw)
  To: qemu-devel
  Cc: soham.ghosh, thuth, berrange, prerna.saxena, dgilbert, armbru,
	Kshitij Suri, philippe.mathieu.daude, kraxel, prachatos.mitra,
	eblake

Libpng is only detected if VNC is enabled currently. This patch adds a
generalised png option in the meson build which is aimed to replace use of
CONFIG_VNC_PNG with CONFIG_PNG.

Signed-off-by: Kshitij Suri <kshitij.suri@nutanix.com>

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
---
 meson.build        |  9 ++++-----
 meson_options.txt  |  4 ++--
 ui/vnc-enc-tight.c | 18 +++++++++---------
 ui/vnc.c           |  4 ++--
 ui/vnc.h           |  2 +-
 5 files changed, 18 insertions(+), 19 deletions(-)

diff --git a/meson.build b/meson.build
index 282e7c4650..ccb6840a49 100644
--- a/meson.build
+++ b/meson.build
@@ -1115,14 +1115,13 @@ if gtkx11.found()
   x11 = dependency('x11', method: 'pkg-config', required: gtkx11.found(),
                    kwargs: static_kwargs)
 endif
+png = dependency('libpng', required: get_option('png'),
+                 method: 'pkg-config', kwargs: static_kwargs)
 vnc = not_found
-png = not_found
 jpeg = not_found
 sasl = not_found
 if get_option('vnc').allowed() and have_system
   vnc = declare_dependency() # dummy dependency
-  png = dependency('libpng', required: get_option('vnc_png'),
-                   method: 'pkg-config', kwargs: static_kwargs)
   jpeg = dependency('libjpeg', required: get_option('vnc_jpeg'),
                     method: 'pkg-config', kwargs: static_kwargs)
   sasl = cc.find_library('sasl2', has_headers: ['sasl/sasl.h'],
@@ -1554,9 +1553,9 @@ config_host_data.set('CONFIG_TPM', have_tpm)
 config_host_data.set('CONFIG_USB_LIBUSB', libusb.found())
 config_host_data.set('CONFIG_VDE', vde.found())
 config_host_data.set('CONFIG_VHOST_USER_BLK_SERVER', have_vhost_user_blk_server)
+config_host_data.set('CONFIG_PNG', png.found())
 config_host_data.set('CONFIG_VNC', vnc.found())
 config_host_data.set('CONFIG_VNC_JPEG', jpeg.found())
-config_host_data.set('CONFIG_VNC_PNG', png.found())
 config_host_data.set('CONFIG_VNC_SASL', sasl.found())
 config_host_data.set('CONFIG_VIRTFS', have_virtfs)
 config_host_data.set('CONFIG_VTE', vte.found())
@@ -3638,11 +3637,11 @@ summary_info += {'curses support':    curses}
 summary_info += {'virgl support':     virgl}
 summary_info += {'curl support':      curl}
 summary_info += {'Multipath support': mpathpersist}
+summary_info += {'PNG support':       png}
 summary_info += {'VNC support':       vnc}
 if vnc.found()
   summary_info += {'VNC SASL support':  sasl}
   summary_info += {'VNC JPEG support':  jpeg}
-  summary_info += {'VNC PNG support':   png}
 endif
 if targetos not in ['darwin', 'haiku', 'windows']
   summary_info += {'OSS support':     oss}
diff --git a/meson_options.txt b/meson_options.txt
index 52b11cead4..d85734f8e6 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -177,12 +177,12 @@ option('vde', type : 'feature', value : 'auto',
        description: 'vde network backend support')
 option('virglrenderer', type : 'feature', value : 'auto',
        description: 'virgl rendering support')
+option('png', type : 'feature', value : 'auto',
+       description: 'PNG support with libpng')
 option('vnc', type : 'feature', value : 'auto',
        description: 'VNC server')
 option('vnc_jpeg', type : 'feature', value : 'auto',
        description: 'JPEG lossy compression for VNC server')
-option('vnc_png', type : 'feature', value : 'auto',
-       description: 'PNG compression for VNC server')
 option('vnc_sasl', type : 'feature', value : 'auto',
        description: 'SASL authentication for VNC server')
 option('vte', type : 'feature', value : 'auto',
diff --git a/ui/vnc-enc-tight.c b/ui/vnc-enc-tight.c
index 7b86a4713d..e879cca7f5 100644
--- a/ui/vnc-enc-tight.c
+++ b/ui/vnc-enc-tight.c
@@ -32,7 +32,7 @@
    INT32 definitions between jmorecfg.h (included by jpeglib.h) and
    Win32 basetsd.h (included by windows.h). */
 
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
 /* The following define is needed by pngconf.h. Otherwise it won't compile,
    because setjmp.h was already included by qemu-common.h. */
 #define PNG_SKIP_SETJMP_CHECK
@@ -95,7 +95,7 @@ static const struct {
 };
 #endif
 
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
 static const struct {
     int png_zlib_level, png_filters;
 } tight_png_conf[] = {
@@ -919,7 +919,7 @@ static int send_full_color_rect(VncState *vs, int x, int y, int w, int h)
     int stream = 0;
     ssize_t bytes;
 
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     if (tight_can_send_png_rect(vs, w, h)) {
         return send_png_rect(vs, x, y, w, h, NULL);
     }
@@ -966,7 +966,7 @@ static int send_mono_rect(VncState *vs, int x, int y,
     int stream = 1;
     int level = tight_conf[vs->tight->compression].mono_zlib_level;
 
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     if (tight_can_send_png_rect(vs, w, h)) {
         int ret;
         int bpp = vs->client_pf.bytes_per_pixel * 8;
@@ -1020,7 +1020,7 @@ static int send_mono_rect(VncState *vs, int x, int y,
 struct palette_cb_priv {
     VncState *vs;
     uint8_t *header;
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     png_colorp png_palette;
 #endif
 };
@@ -1082,7 +1082,7 @@ static int send_palette_rect(VncState *vs, int x, int y,
     int colors;
     ssize_t bytes;
 
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     if (tight_can_send_png_rect(vs, w, h)) {
         return send_png_rect(vs, x, y, w, h, palette);
     }
@@ -1233,7 +1233,7 @@ static int send_jpeg_rect(VncState *vs, int x, int y, int w, int h, int quality)
 /*
  * PNG compression stuff.
  */
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
 static void write_png_palette(int idx, uint32_t pix, void *opaque)
 {
     struct palette_cb_priv *priv = opaque;
@@ -1379,7 +1379,7 @@ static int send_png_rect(VncState *vs, int x, int y, int w, int h,
     buffer_reset(&vs->tight->png);
     return 1;
 }
-#endif /* CONFIG_VNC_PNG */
+#endif /* CONFIG_PNG */
 
 static void vnc_tight_start(VncState *vs)
 {
@@ -1706,7 +1706,7 @@ void vnc_tight_clear(VncState *vs)
 #ifdef CONFIG_VNC_JPEG
     buffer_free(&vs->tight->jpeg);
 #endif
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     buffer_free(&vs->tight->png);
 #endif
 }
diff --git a/ui/vnc.c b/ui/vnc.c
index 310a873c21..8376291b47 100644
--- a/ui/vnc.c
+++ b/ui/vnc.c
@@ -2165,7 +2165,7 @@ static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
             vs->features |= VNC_FEATURE_TIGHT_MASK;
             vs->vnc_encoding = enc;
             break;
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
         case VNC_ENCODING_TIGHT_PNG:
             vs->features |= VNC_FEATURE_TIGHT_PNG_MASK;
             vs->vnc_encoding = enc;
@@ -3256,7 +3256,7 @@ static void vnc_connect(VncDisplay *vd, QIOChannelSocket *sioc,
 #ifdef CONFIG_VNC_JPEG
     buffer_init(&vs->tight->jpeg,     "vnc-tight-jpeg/%p", sioc);
 #endif
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     buffer_init(&vs->tight->png,      "vnc-tight-png/%p", sioc);
 #endif
     buffer_init(&vs->zlib.zlib,      "vnc-zlib/%p", sioc);
diff --git a/ui/vnc.h b/ui/vnc.h
index a7149831f9..a60fb13115 100644
--- a/ui/vnc.h
+++ b/ui/vnc.h
@@ -201,7 +201,7 @@ typedef struct VncTight {
 #ifdef CONFIG_VNC_JPEG
     Buffer jpeg;
 #endif
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     Buffer png;
 #endif
     int levels[4];
-- 
2.22.3



^ permalink raw reply related	[flat|nested] 22+ messages in thread

* Re: [PATCH v2 1/2] Replacing CONFIG_VNC_PNG with CONFIG_PNG
  2022-03-22  9:42 ` Daniel P. Berrangé
@ 2022-03-22  9:52   ` Kshitij Suri
  0 siblings, 0 replies; 22+ messages in thread
From: Kshitij Suri @ 2022-03-22  9:52 UTC (permalink / raw)
  To: Daniel P. Berrangé
  Cc: soham.ghosh, thuth, prerna.saxena, armbru, qemu-devel,
	philippe.mathieu.daude, kraxel, prachatos.mitra, eblake,
	dgilbert


On 22/03/22 3:12 pm, Daniel P. Berrangé wrote:
> On Tue, Mar 22, 2022 at 08:18:44AM +0000, Kshitij Suri wrote:
>> Libpng is only detected if VNC is enabled currently. This patch adds a
>> generalised png option in the meson build which is aimed to replace use of
>> CONFIG_VNC_PNG with CONFIG_PNG.
>>
>> Signed-off-by: Kshitij Suri <kshitij.suri@nutanix.com>
>> ---
>>   meson.build        |  9 ++++-----
>>   meson_options.txt  |  4 ++--
>>   ui/vnc-enc-tight.c | 18 +++++++++---------
>>   ui/vnc.c           |  4 ++--
>>   ui/vnc.h           |  2 +-
>>   5 files changed, 18 insertions(+), 19 deletions(-)
> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
>
>
> With regards,
> Daniel

Thank you for this!


Regards,

Kshitij Suri



^ permalink raw reply	[flat|nested] 22+ messages in thread

* Re: [PATCH v2 1/2] Replacing CONFIG_VNC_PNG with CONFIG_PNG
  2022-03-22  8:18 Kshitij Suri
@ 2022-03-22  9:42 ` Daniel P. Berrangé
  2022-03-22  9:52   ` Kshitij Suri
  0 siblings, 1 reply; 22+ messages in thread
From: Daniel P. Berrangé @ 2022-03-22  9:42 UTC (permalink / raw)
  To: Kshitij Suri
  Cc: soham.ghosh, thuth, prerna.saxena, armbru, qemu-devel,
	philippe.mathieu.daude, kraxel, prachatos.mitra, eblake,
	dgilbert

On Tue, Mar 22, 2022 at 08:18:44AM +0000, Kshitij Suri wrote:
> Libpng is only detected if VNC is enabled currently. This patch adds a
> generalised png option in the meson build which is aimed to replace use of
> CONFIG_VNC_PNG with CONFIG_PNG.
> 
> Signed-off-by: Kshitij Suri <kshitij.suri@nutanix.com>
> ---
>  meson.build        |  9 ++++-----
>  meson_options.txt  |  4 ++--
>  ui/vnc-enc-tight.c | 18 +++++++++---------
>  ui/vnc.c           |  4 ++--
>  ui/vnc.h           |  2 +-
>  5 files changed, 18 insertions(+), 19 deletions(-)

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>


With regards,
Daniel
-- 
|: https://berrange.com      -o-    https://www.flickr.com/photos/dberrange :|
|: https://libvirt.org         -o-            https://fstop138.berrange.com :|
|: https://entangle-photo.org    -o-    https://www.instagram.com/dberrange :|



^ permalink raw reply	[flat|nested] 22+ messages in thread

* [PATCH v2 1/2] Replacing CONFIG_VNC_PNG with CONFIG_PNG
@ 2022-03-22  8:18 Kshitij Suri
  2022-03-22  9:42 ` Daniel P. Berrangé
  0 siblings, 1 reply; 22+ messages in thread
From: Kshitij Suri @ 2022-03-22  8:18 UTC (permalink / raw)
  To: qemu-devel
  Cc: soham.ghosh, thuth, berrange, prerna.saxena, dgilbert, armbru,
	Kshitij Suri, philippe.mathieu.daude, kraxel, prachatos.mitra,
	eblake

Libpng is only detected if VNC is enabled currently. This patch adds a
generalised png option in the meson build which is aimed to replace use of
CONFIG_VNC_PNG with CONFIG_PNG.

Signed-off-by: Kshitij Suri <kshitij.suri@nutanix.com>
---
 meson.build        |  9 ++++-----
 meson_options.txt  |  4 ++--
 ui/vnc-enc-tight.c | 18 +++++++++---------
 ui/vnc.c           |  4 ++--
 ui/vnc.h           |  2 +-
 5 files changed, 18 insertions(+), 19 deletions(-)

diff --git a/meson.build b/meson.build
index 282e7c4650..ccb6840a49 100644
--- a/meson.build
+++ b/meson.build
@@ -1115,14 +1115,13 @@ if gtkx11.found()
   x11 = dependency('x11', method: 'pkg-config', required: gtkx11.found(),
                    kwargs: static_kwargs)
 endif
+png = dependency('libpng', required: get_option('png'),
+                 method: 'pkg-config', kwargs: static_kwargs)
 vnc = not_found
-png = not_found
 jpeg = not_found
 sasl = not_found
 if get_option('vnc').allowed() and have_system
   vnc = declare_dependency() # dummy dependency
-  png = dependency('libpng', required: get_option('vnc_png'),
-                   method: 'pkg-config', kwargs: static_kwargs)
   jpeg = dependency('libjpeg', required: get_option('vnc_jpeg'),
                     method: 'pkg-config', kwargs: static_kwargs)
   sasl = cc.find_library('sasl2', has_headers: ['sasl/sasl.h'],
@@ -1554,9 +1553,9 @@ config_host_data.set('CONFIG_TPM', have_tpm)
 config_host_data.set('CONFIG_USB_LIBUSB', libusb.found())
 config_host_data.set('CONFIG_VDE', vde.found())
 config_host_data.set('CONFIG_VHOST_USER_BLK_SERVER', have_vhost_user_blk_server)
+config_host_data.set('CONFIG_PNG', png.found())
 config_host_data.set('CONFIG_VNC', vnc.found())
 config_host_data.set('CONFIG_VNC_JPEG', jpeg.found())
-config_host_data.set('CONFIG_VNC_PNG', png.found())
 config_host_data.set('CONFIG_VNC_SASL', sasl.found())
 config_host_data.set('CONFIG_VIRTFS', have_virtfs)
 config_host_data.set('CONFIG_VTE', vte.found())
@@ -3638,11 +3637,11 @@ summary_info += {'curses support':    curses}
 summary_info += {'virgl support':     virgl}
 summary_info += {'curl support':      curl}
 summary_info += {'Multipath support': mpathpersist}
+summary_info += {'PNG support':       png}
 summary_info += {'VNC support':       vnc}
 if vnc.found()
   summary_info += {'VNC SASL support':  sasl}
   summary_info += {'VNC JPEG support':  jpeg}
-  summary_info += {'VNC PNG support':   png}
 endif
 if targetos not in ['darwin', 'haiku', 'windows']
   summary_info += {'OSS support':     oss}
diff --git a/meson_options.txt b/meson_options.txt
index 52b11cead4..d85734f8e6 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -177,12 +177,12 @@ option('vde', type : 'feature', value : 'auto',
        description: 'vde network backend support')
 option('virglrenderer', type : 'feature', value : 'auto',
        description: 'virgl rendering support')
+option('png', type : 'feature', value : 'auto',
+       description: 'PNG support with libpng')
 option('vnc', type : 'feature', value : 'auto',
        description: 'VNC server')
 option('vnc_jpeg', type : 'feature', value : 'auto',
        description: 'JPEG lossy compression for VNC server')
-option('vnc_png', type : 'feature', value : 'auto',
-       description: 'PNG compression for VNC server')
 option('vnc_sasl', type : 'feature', value : 'auto',
        description: 'SASL authentication for VNC server')
 option('vte', type : 'feature', value : 'auto',
diff --git a/ui/vnc-enc-tight.c b/ui/vnc-enc-tight.c
index 7b86a4713d..e879cca7f5 100644
--- a/ui/vnc-enc-tight.c
+++ b/ui/vnc-enc-tight.c
@@ -32,7 +32,7 @@
    INT32 definitions between jmorecfg.h (included by jpeglib.h) and
    Win32 basetsd.h (included by windows.h). */
 
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
 /* The following define is needed by pngconf.h. Otherwise it won't compile,
    because setjmp.h was already included by qemu-common.h. */
 #define PNG_SKIP_SETJMP_CHECK
@@ -95,7 +95,7 @@ static const struct {
 };
 #endif
 
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
 static const struct {
     int png_zlib_level, png_filters;
 } tight_png_conf[] = {
@@ -919,7 +919,7 @@ static int send_full_color_rect(VncState *vs, int x, int y, int w, int h)
     int stream = 0;
     ssize_t bytes;
 
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     if (tight_can_send_png_rect(vs, w, h)) {
         return send_png_rect(vs, x, y, w, h, NULL);
     }
@@ -966,7 +966,7 @@ static int send_mono_rect(VncState *vs, int x, int y,
     int stream = 1;
     int level = tight_conf[vs->tight->compression].mono_zlib_level;
 
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     if (tight_can_send_png_rect(vs, w, h)) {
         int ret;
         int bpp = vs->client_pf.bytes_per_pixel * 8;
@@ -1020,7 +1020,7 @@ static int send_mono_rect(VncState *vs, int x, int y,
 struct palette_cb_priv {
     VncState *vs;
     uint8_t *header;
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     png_colorp png_palette;
 #endif
 };
@@ -1082,7 +1082,7 @@ static int send_palette_rect(VncState *vs, int x, int y,
     int colors;
     ssize_t bytes;
 
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     if (tight_can_send_png_rect(vs, w, h)) {
         return send_png_rect(vs, x, y, w, h, palette);
     }
@@ -1233,7 +1233,7 @@ static int send_jpeg_rect(VncState *vs, int x, int y, int w, int h, int quality)
 /*
  * PNG compression stuff.
  */
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
 static void write_png_palette(int idx, uint32_t pix, void *opaque)
 {
     struct palette_cb_priv *priv = opaque;
@@ -1379,7 +1379,7 @@ static int send_png_rect(VncState *vs, int x, int y, int w, int h,
     buffer_reset(&vs->tight->png);
     return 1;
 }
-#endif /* CONFIG_VNC_PNG */
+#endif /* CONFIG_PNG */
 
 static void vnc_tight_start(VncState *vs)
 {
@@ -1706,7 +1706,7 @@ void vnc_tight_clear(VncState *vs)
 #ifdef CONFIG_VNC_JPEG
     buffer_free(&vs->tight->jpeg);
 #endif
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     buffer_free(&vs->tight->png);
 #endif
 }
diff --git a/ui/vnc.c b/ui/vnc.c
index 310a873c21..8376291b47 100644
--- a/ui/vnc.c
+++ b/ui/vnc.c
@@ -2165,7 +2165,7 @@ static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
             vs->features |= VNC_FEATURE_TIGHT_MASK;
             vs->vnc_encoding = enc;
             break;
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
         case VNC_ENCODING_TIGHT_PNG:
             vs->features |= VNC_FEATURE_TIGHT_PNG_MASK;
             vs->vnc_encoding = enc;
@@ -3256,7 +3256,7 @@ static void vnc_connect(VncDisplay *vd, QIOChannelSocket *sioc,
 #ifdef CONFIG_VNC_JPEG
     buffer_init(&vs->tight->jpeg,     "vnc-tight-jpeg/%p", sioc);
 #endif
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     buffer_init(&vs->tight->png,      "vnc-tight-png/%p", sioc);
 #endif
     buffer_init(&vs->zlib.zlib,      "vnc-zlib/%p", sioc);
diff --git a/ui/vnc.h b/ui/vnc.h
index a7149831f9..a60fb13115 100644
--- a/ui/vnc.h
+++ b/ui/vnc.h
@@ -201,7 +201,7 @@ typedef struct VncTight {
 #ifdef CONFIG_VNC_JPEG
     Buffer jpeg;
 #endif
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     Buffer png;
 #endif
     int levels[4];
-- 
2.22.3



^ permalink raw reply related	[flat|nested] 22+ messages in thread

* Re: [PATCH v2 1/2] Replacing CONFIG_VNC_PNG with CONFIG_PNG
  2022-03-15  4:47 Kshitij Suri
@ 2022-03-15  9:17 ` Paolo Bonzini
  0 siblings, 0 replies; 22+ messages in thread
From: Paolo Bonzini @ 2022-03-15  9:17 UTC (permalink / raw)
  To: Kshitij Suri, qemu-devel
  Cc: soham.ghosh, berrange, prerna.saxena, armbru, dgilbert,
	philippe.mathieu.daude, kraxel, thuth, prachatos.mitra, eblake

On 3/15/22 05:47, Kshitij Suri wrote:
> +png = dependency('libpng', required: get_option('png'),
> +                 method: 'pkg-config', kwargs: static_kwargs)

The full way to write it would be:

png = not_found
if get_option('png').allowed() and have_system
   png = dependency('libpng', required: get_option('png'),
                    method: 'pkg-config', kwargs: static_kwargs)
endif

but we can now also use

png = dependency('libpng',
                  required: get_option('png').disable_auto_if(not have_system),
                  method: 'pkg-config', kwargs: static_kwargs)

Use the one that you prefer.

Paolo


^ permalink raw reply	[flat|nested] 22+ messages in thread

* [PATCH v2 1/2] Replacing CONFIG_VNC_PNG with CONFIG_PNG
@ 2022-03-15  4:47 Kshitij Suri
  2022-03-15  9:17 ` Paolo Bonzini
  0 siblings, 1 reply; 22+ messages in thread
From: Kshitij Suri @ 2022-03-15  4:47 UTC (permalink / raw)
  To: qemu-devel
  Cc: soham.ghosh, thuth, berrange, prerna.saxena, dgilbert, armbru,
	Kshitij Suri, philippe.mathieu.daude, kraxel, prachatos.mitra,
	eblake

Libpng is only detected if VNC is enabled currently. This patch adds a
generalised png option in the meson build which is aimed to replace use of
CONFIG_VNC_PNG with CONFIG_PNG.

Signed-off-by: Kshitij Suri <kshitij.suri@nutanix.com>
---
 meson.build        |  9 ++++-----
 meson_options.txt  |  4 ++--
 ui/vnc-enc-tight.c | 18 +++++++++---------
 ui/vnc.c           |  4 ++--
 ui/vnc.h           |  2 +-
 5 files changed, 18 insertions(+), 19 deletions(-)

diff --git a/meson.build b/meson.build
index 8df40bfac4..3b67f83a2c 100644
--- a/meson.build
+++ b/meson.build
@@ -1112,14 +1112,13 @@ if gtkx11.found()
   x11 = dependency('x11', method: 'pkg-config', required: gtkx11.found(),
                    kwargs: static_kwargs)
 endif
+png = dependency('libpng', required: get_option('png'),
+                 method: 'pkg-config', kwargs: static_kwargs)
 vnc = not_found
-png = not_found
 jpeg = not_found
 sasl = not_found
 if get_option('vnc').allowed() and have_system
   vnc = declare_dependency() # dummy dependency
-  png = dependency('libpng', required: get_option('vnc_png'),
-                   method: 'pkg-config', kwargs: static_kwargs)
   jpeg = dependency('libjpeg', required: get_option('vnc_jpeg'),
                     method: 'pkg-config', kwargs: static_kwargs)
   sasl = cc.find_library('sasl2', has_headers: ['sasl/sasl.h'],
@@ -1537,9 +1536,9 @@ config_host_data.set('CONFIG_TPM', have_tpm)
 config_host_data.set('CONFIG_USB_LIBUSB', libusb.found())
 config_host_data.set('CONFIG_VDE', vde.found())
 config_host_data.set('CONFIG_VHOST_USER_BLK_SERVER', have_vhost_user_blk_server)
+config_host_data.set('CONFIG_PNG', png.found())
 config_host_data.set('CONFIG_VNC', vnc.found())
 config_host_data.set('CONFIG_VNC_JPEG', jpeg.found())
-config_host_data.set('CONFIG_VNC_PNG', png.found())
 config_host_data.set('CONFIG_VNC_SASL', sasl.found())
 config_host_data.set('CONFIG_VIRTFS', have_virtfs)
 config_host_data.set('CONFIG_VTE', vte.found())
@@ -3579,11 +3578,11 @@ summary_info += {'curses support':    curses}
 summary_info += {'virgl support':     virgl}
 summary_info += {'curl support':      curl}
 summary_info += {'Multipath support': mpathpersist}
+summary_info += {'PNG support':       png}
 summary_info += {'VNC support':       vnc}
 if vnc.found()
   summary_info += {'VNC SASL support':  sasl}
   summary_info += {'VNC JPEG support':  jpeg}
-  summary_info += {'VNC PNG support':   png}
 endif
 if targetos not in ['darwin', 'haiku', 'windows']
   summary_info += {'OSS support':     oss}
diff --git a/meson_options.txt b/meson_options.txt
index 52b11cead4..d85734f8e6 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -177,12 +177,12 @@ option('vde', type : 'feature', value : 'auto',
        description: 'vde network backend support')
 option('virglrenderer', type : 'feature', value : 'auto',
        description: 'virgl rendering support')
+option('png', type : 'feature', value : 'auto',
+       description: 'PNG support with libpng')
 option('vnc', type : 'feature', value : 'auto',
        description: 'VNC server')
 option('vnc_jpeg', type : 'feature', value : 'auto',
        description: 'JPEG lossy compression for VNC server')
-option('vnc_png', type : 'feature', value : 'auto',
-       description: 'PNG compression for VNC server')
 option('vnc_sasl', type : 'feature', value : 'auto',
        description: 'SASL authentication for VNC server')
 option('vte', type : 'feature', value : 'auto',
diff --git a/ui/vnc-enc-tight.c b/ui/vnc-enc-tight.c
index cebd35841a..a23ad712eb 100644
--- a/ui/vnc-enc-tight.c
+++ b/ui/vnc-enc-tight.c
@@ -32,7 +32,7 @@
    INT32 definitions between jmorecfg.h (included by jpeglib.h) and
    Win32 basetsd.h (included by windows.h). */
 
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
 /* The following define is needed by pngconf.h. Otherwise it won't compile,
    because setjmp.h was already included by qemu-common.h. */
 #define PNG_SKIP_SETJMP_CHECK
@@ -95,7 +95,7 @@ static const struct {
 };
 #endif
 
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
 static const struct {
     int png_zlib_level, png_filters;
 } tight_png_conf[] = {
@@ -919,7 +919,7 @@ static int send_full_color_rect(VncState *vs, int x, int y, int w, int h)
     int stream = 0;
     ssize_t bytes;
 
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     if (tight_can_send_png_rect(vs, w, h)) {
         return send_png_rect(vs, x, y, w, h, NULL);
     }
@@ -966,7 +966,7 @@ static int send_mono_rect(VncState *vs, int x, int y,
     int stream = 1;
     int level = tight_conf[vs->tight->compression].mono_zlib_level;
 
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     if (tight_can_send_png_rect(vs, w, h)) {
         int ret;
         int bpp = vs->client_pf.bytes_per_pixel * 8;
@@ -1020,7 +1020,7 @@ static int send_mono_rect(VncState *vs, int x, int y,
 struct palette_cb_priv {
     VncState *vs;
     uint8_t *header;
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     png_colorp png_palette;
 #endif
 };
@@ -1082,7 +1082,7 @@ static int send_palette_rect(VncState *vs, int x, int y,
     int colors;
     ssize_t bytes;
 
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     if (tight_can_send_png_rect(vs, w, h)) {
         return send_png_rect(vs, x, y, w, h, palette);
     }
@@ -1233,7 +1233,7 @@ static int send_jpeg_rect(VncState *vs, int x, int y, int w, int h, int quality)
 /*
  * PNG compression stuff.
  */
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
 static void write_png_palette(int idx, uint32_t pix, void *opaque)
 {
     struct palette_cb_priv *priv = opaque;
@@ -1379,7 +1379,7 @@ static int send_png_rect(VncState *vs, int x, int y, int w, int h,
     buffer_reset(&vs->tight->png);
     return 1;
 }
-#endif /* CONFIG_VNC_PNG */
+#endif /* CONFIG_PNG */
 
 static void vnc_tight_start(VncState *vs)
 {
@@ -1706,7 +1706,7 @@ void vnc_tight_clear(VncState *vs)
 #ifdef CONFIG_VNC_JPEG
     buffer_free(&vs->tight->jpeg);
 #endif
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     buffer_free(&vs->tight->png);
 #endif
 }
diff --git a/ui/vnc.c b/ui/vnc.c
index 3ccd33dedc..a588ddff1c 100644
--- a/ui/vnc.c
+++ b/ui/vnc.c
@@ -2165,7 +2165,7 @@ static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
             vs->features |= VNC_FEATURE_TIGHT_MASK;
             vs->vnc_encoding = enc;
             break;
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
         case VNC_ENCODING_TIGHT_PNG:
             vs->features |= VNC_FEATURE_TIGHT_PNG_MASK;
             vs->vnc_encoding = enc;
@@ -3248,7 +3248,7 @@ static void vnc_connect(VncDisplay *vd, QIOChannelSocket *sioc,
 #ifdef CONFIG_VNC_JPEG
     buffer_init(&vs->tight->jpeg,     "vnc-tight-jpeg/%p", sioc);
 #endif
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     buffer_init(&vs->tight->png,      "vnc-tight-png/%p", sioc);
 #endif
     buffer_init(&vs->zlib.zlib,      "vnc-zlib/%p", sioc);
diff --git a/ui/vnc.h b/ui/vnc.h
index a7149831f9..a60fb13115 100644
--- a/ui/vnc.h
+++ b/ui/vnc.h
@@ -201,7 +201,7 @@ typedef struct VncTight {
 #ifdef CONFIG_VNC_JPEG
     Buffer jpeg;
 #endif
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     Buffer png;
 #endif
     int levels[4];
-- 
2.22.3



^ permalink raw reply related	[flat|nested] 22+ messages in thread

* Re: [PATCH v2 1/2] Replacing CONFIG_VNC_PNG with CONFIG_PNG
  2022-03-01  6:44 Kshitij Suri
@ 2022-03-07 16:40 ` Kshitij Suri
  0 siblings, 0 replies; 22+ messages in thread
From: Kshitij Suri @ 2022-03-07 16:40 UTC (permalink / raw)
  To: qemu-devel
  Cc: soham.ghosh, thuth, Daniel P. Berrangé,
	prerna.saxena, dgilbert, armbru, philippe.mathieu.daude, kraxel,
	prachatos.mitra, eblake

Hi,

Hope this mail finds you well. I have updated the code as required and 
request you to review and suggest changes that are needed to be 
implemented. In case no change is required, please do let me know the 
next steps for the same.

Regards,

Kshitij Suri

On 01/03/22 12:14 pm, Kshitij Suri wrote:
> Libpng is only detected if VNC is enabled currently. This patch adds a
> generalised png option in the meson build which is aimed to replace use of
> CONFIG_VNC_PNG with CONFIG_PNG.
>
> Signed-off-by: Kshitij Suri <kshitij.suri@nutanix.com>
> ---
>   meson.build        |  9 ++++-----
>   meson_options.txt  |  4 ++--
>   ui/vnc-enc-tight.c | 18 +++++++++---------
>   ui/vnc.c           |  4 ++--
>   ui/vnc.h           |  2 +-
>   5 files changed, 18 insertions(+), 19 deletions(-)
>
> diff --git a/meson.build b/meson.build
> index 8df40bfac4..3b67f83a2c 100644
> --- a/meson.build
> +++ b/meson.build
> @@ -1112,14 +1112,13 @@ if gtkx11.found()
>     x11 = dependency('x11', method: 'pkg-config', required: gtkx11.found(),
>                      kwargs: static_kwargs)
>   endif
> +png = dependency('libpng', required: get_option('png'),
> +                 method: 'pkg-config', kwargs: static_kwargs)
>   vnc = not_found
> -png = not_found
>   jpeg = not_found
>   sasl = not_found
>   if get_option('vnc').allowed() and have_system
>     vnc = declare_dependency() # dummy dependency
> -  png = dependency('libpng', required: get_option('vnc_png'),
> -                   method: 'pkg-config', kwargs: static_kwargs)
>     jpeg = dependency('libjpeg', required: get_option('vnc_jpeg'),
>                       method: 'pkg-config', kwargs: static_kwargs)
>     sasl = cc.find_library('sasl2', has_headers: ['sasl/sasl.h'],
> @@ -1537,9 +1536,9 @@ config_host_data.set('CONFIG_TPM', have_tpm)
>   config_host_data.set('CONFIG_USB_LIBUSB', libusb.found())
>   config_host_data.set('CONFIG_VDE', vde.found())
>   config_host_data.set('CONFIG_VHOST_USER_BLK_SERVER', have_vhost_user_blk_server)
> +config_host_data.set('CONFIG_PNG', png.found())
>   config_host_data.set('CONFIG_VNC', vnc.found())
>   config_host_data.set('CONFIG_VNC_JPEG', jpeg.found())
> -config_host_data.set('CONFIG_VNC_PNG', png.found())
>   config_host_data.set('CONFIG_VNC_SASL', sasl.found())
>   config_host_data.set('CONFIG_VIRTFS', have_virtfs)
>   config_host_data.set('CONFIG_VTE', vte.found())
> @@ -3579,11 +3578,11 @@ summary_info += {'curses support':    curses}
>   summary_info += {'virgl support':     virgl}
>   summary_info += {'curl support':      curl}
>   summary_info += {'Multipath support': mpathpersist}
> +summary_info += {'PNG support':       png}
>   summary_info += {'VNC support':       vnc}
>   if vnc.found()
>     summary_info += {'VNC SASL support':  sasl}
>     summary_info += {'VNC JPEG support':  jpeg}
> -  summary_info += {'VNC PNG support':   png}
>   endif
>   if targetos not in ['darwin', 'haiku', 'windows']
>     summary_info += {'OSS support':     oss}
> diff --git a/meson_options.txt b/meson_options.txt
> index 52b11cead4..d85734f8e6 100644
> --- a/meson_options.txt
> +++ b/meson_options.txt
> @@ -177,12 +177,12 @@ option('vde', type : 'feature', value : 'auto',
>          description: 'vde network backend support')
>   option('virglrenderer', type : 'feature', value : 'auto',
>          description: 'virgl rendering support')
> +option('png', type : 'feature', value : 'auto',
> +       description: 'PNG support with libpng')
>   option('vnc', type : 'feature', value : 'auto',
>          description: 'VNC server')
>   option('vnc_jpeg', type : 'feature', value : 'auto',
>          description: 'JPEG lossy compression for VNC server')
> -option('vnc_png', type : 'feature', value : 'auto',
> -       description: 'PNG compression for VNC server')
>   option('vnc_sasl', type : 'feature', value : 'auto',
>          description: 'SASL authentication for VNC server')
>   option('vte', type : 'feature', value : 'auto',
> diff --git a/ui/vnc-enc-tight.c b/ui/vnc-enc-tight.c
> index cebd35841a..a23ad712eb 100644
> --- a/ui/vnc-enc-tight.c
> +++ b/ui/vnc-enc-tight.c
> @@ -32,7 +32,7 @@
>      INT32 definitions between jmorecfg.h (included by jpeglib.h) and
>      Win32 basetsd.h (included by windows.h). */
>   
> -#ifdef CONFIG_VNC_PNG
> +#ifdef CONFIG_PNG
>   /* The following define is needed by pngconf.h. Otherwise it won't compile,
>      because setjmp.h was already included by qemu-common.h. */
>   #define PNG_SKIP_SETJMP_CHECK
> @@ -95,7 +95,7 @@ static const struct {
>   };
>   #endif
>   
> -#ifdef CONFIG_VNC_PNG
> +#ifdef CONFIG_PNG
>   static const struct {
>       int png_zlib_level, png_filters;
>   } tight_png_conf[] = {
> @@ -919,7 +919,7 @@ static int send_full_color_rect(VncState *vs, int x, int y, int w, int h)
>       int stream = 0;
>       ssize_t bytes;
>   
> -#ifdef CONFIG_VNC_PNG
> +#ifdef CONFIG_PNG
>       if (tight_can_send_png_rect(vs, w, h)) {
>           return send_png_rect(vs, x, y, w, h, NULL);
>       }
> @@ -966,7 +966,7 @@ static int send_mono_rect(VncState *vs, int x, int y,
>       int stream = 1;
>       int level = tight_conf[vs->tight->compression].mono_zlib_level;
>   
> -#ifdef CONFIG_VNC_PNG
> +#ifdef CONFIG_PNG
>       if (tight_can_send_png_rect(vs, w, h)) {
>           int ret;
>           int bpp = vs->client_pf.bytes_per_pixel * 8;
> @@ -1020,7 +1020,7 @@ static int send_mono_rect(VncState *vs, int x, int y,
>   struct palette_cb_priv {
>       VncState *vs;
>       uint8_t *header;
> -#ifdef CONFIG_VNC_PNG
> +#ifdef CONFIG_PNG
>       png_colorp png_palette;
>   #endif
>   };
> @@ -1082,7 +1082,7 @@ static int send_palette_rect(VncState *vs, int x, int y,
>       int colors;
>       ssize_t bytes;
>   
> -#ifdef CONFIG_VNC_PNG
> +#ifdef CONFIG_PNG
>       if (tight_can_send_png_rect(vs, w, h)) {
>           return send_png_rect(vs, x, y, w, h, palette);
>       }
> @@ -1233,7 +1233,7 @@ static int send_jpeg_rect(VncState *vs, int x, int y, int w, int h, int quality)
>   /*
>    * PNG compression stuff.
>    */
> -#ifdef CONFIG_VNC_PNG
> +#ifdef CONFIG_PNG
>   static void write_png_palette(int idx, uint32_t pix, void *opaque)
>   {
>       struct palette_cb_priv *priv = opaque;
> @@ -1379,7 +1379,7 @@ static int send_png_rect(VncState *vs, int x, int y, int w, int h,
>       buffer_reset(&vs->tight->png);
>       return 1;
>   }
> -#endif /* CONFIG_VNC_PNG */
> +#endif /* CONFIG_PNG */
>   
>   static void vnc_tight_start(VncState *vs)
>   {
> @@ -1706,7 +1706,7 @@ void vnc_tight_clear(VncState *vs)
>   #ifdef CONFIG_VNC_JPEG
>       buffer_free(&vs->tight->jpeg);
>   #endif
> -#ifdef CONFIG_VNC_PNG
> +#ifdef CONFIG_PNG
>       buffer_free(&vs->tight->png);
>   #endif
>   }
> diff --git a/ui/vnc.c b/ui/vnc.c
> index 3ccd33dedc..a588ddff1c 100644
> --- a/ui/vnc.c
> +++ b/ui/vnc.c
> @@ -2165,7 +2165,7 @@ static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
>               vs->features |= VNC_FEATURE_TIGHT_MASK;
>               vs->vnc_encoding = enc;
>               break;
> -#ifdef CONFIG_VNC_PNG
> +#ifdef CONFIG_PNG
>           case VNC_ENCODING_TIGHT_PNG:
>               vs->features |= VNC_FEATURE_TIGHT_PNG_MASK;
>               vs->vnc_encoding = enc;
> @@ -3248,7 +3248,7 @@ static void vnc_connect(VncDisplay *vd, QIOChannelSocket *sioc,
>   #ifdef CONFIG_VNC_JPEG
>       buffer_init(&vs->tight->jpeg,     "vnc-tight-jpeg/%p", sioc);
>   #endif
> -#ifdef CONFIG_VNC_PNG
> +#ifdef CONFIG_PNG
>       buffer_init(&vs->tight->png,      "vnc-tight-png/%p", sioc);
>   #endif
>       buffer_init(&vs->zlib.zlib,      "vnc-zlib/%p", sioc);
> diff --git a/ui/vnc.h b/ui/vnc.h
> index a7149831f9..a60fb13115 100644
> --- a/ui/vnc.h
> +++ b/ui/vnc.h
> @@ -201,7 +201,7 @@ typedef struct VncTight {
>   #ifdef CONFIG_VNC_JPEG
>       Buffer jpeg;
>   #endif
> -#ifdef CONFIG_VNC_PNG
> +#ifdef CONFIG_PNG
>       Buffer png;
>   #endif
>       int levels[4];


^ permalink raw reply	[flat|nested] 22+ messages in thread

* [PATCH v2 1/2] Replacing CONFIG_VNC_PNG with CONFIG_PNG
@ 2022-03-01  6:44 Kshitij Suri
  2022-03-07 16:40 ` Kshitij Suri
  0 siblings, 1 reply; 22+ messages in thread
From: Kshitij Suri @ 2022-03-01  6:44 UTC (permalink / raw)
  To: qemu-devel
  Cc: soham.ghosh, thuth, prerna.saxena, dgilbert, armbru,
	Kshitij Suri, kraxel, prachatos.mitra, eblake

Libpng is only detected if VNC is enabled currently. This patch adds a
generalised png option in the meson build which is aimed to replace use of
CONFIG_VNC_PNG with CONFIG_PNG.

Signed-off-by: Kshitij Suri <kshitij.suri@nutanix.com>
---
 meson.build        |  9 ++++-----
 meson_options.txt  |  4 ++--
 ui/vnc-enc-tight.c | 18 +++++++++---------
 ui/vnc.c           |  4 ++--
 ui/vnc.h           |  2 +-
 5 files changed, 18 insertions(+), 19 deletions(-)

diff --git a/meson.build b/meson.build
index 8df40bfac4..3b67f83a2c 100644
--- a/meson.build
+++ b/meson.build
@@ -1112,14 +1112,13 @@ if gtkx11.found()
   x11 = dependency('x11', method: 'pkg-config', required: gtkx11.found(),
                    kwargs: static_kwargs)
 endif
+png = dependency('libpng', required: get_option('png'),
+                 method: 'pkg-config', kwargs: static_kwargs)
 vnc = not_found
-png = not_found
 jpeg = not_found
 sasl = not_found
 if get_option('vnc').allowed() and have_system
   vnc = declare_dependency() # dummy dependency
-  png = dependency('libpng', required: get_option('vnc_png'),
-                   method: 'pkg-config', kwargs: static_kwargs)
   jpeg = dependency('libjpeg', required: get_option('vnc_jpeg'),
                     method: 'pkg-config', kwargs: static_kwargs)
   sasl = cc.find_library('sasl2', has_headers: ['sasl/sasl.h'],
@@ -1537,9 +1536,9 @@ config_host_data.set('CONFIG_TPM', have_tpm)
 config_host_data.set('CONFIG_USB_LIBUSB', libusb.found())
 config_host_data.set('CONFIG_VDE', vde.found())
 config_host_data.set('CONFIG_VHOST_USER_BLK_SERVER', have_vhost_user_blk_server)
+config_host_data.set('CONFIG_PNG', png.found())
 config_host_data.set('CONFIG_VNC', vnc.found())
 config_host_data.set('CONFIG_VNC_JPEG', jpeg.found())
-config_host_data.set('CONFIG_VNC_PNG', png.found())
 config_host_data.set('CONFIG_VNC_SASL', sasl.found())
 config_host_data.set('CONFIG_VIRTFS', have_virtfs)
 config_host_data.set('CONFIG_VTE', vte.found())
@@ -3579,11 +3578,11 @@ summary_info += {'curses support':    curses}
 summary_info += {'virgl support':     virgl}
 summary_info += {'curl support':      curl}
 summary_info += {'Multipath support': mpathpersist}
+summary_info += {'PNG support':       png}
 summary_info += {'VNC support':       vnc}
 if vnc.found()
   summary_info += {'VNC SASL support':  sasl}
   summary_info += {'VNC JPEG support':  jpeg}
-  summary_info += {'VNC PNG support':   png}
 endif
 if targetos not in ['darwin', 'haiku', 'windows']
   summary_info += {'OSS support':     oss}
diff --git a/meson_options.txt b/meson_options.txt
index 52b11cead4..d85734f8e6 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -177,12 +177,12 @@ option('vde', type : 'feature', value : 'auto',
        description: 'vde network backend support')
 option('virglrenderer', type : 'feature', value : 'auto',
        description: 'virgl rendering support')
+option('png', type : 'feature', value : 'auto',
+       description: 'PNG support with libpng')
 option('vnc', type : 'feature', value : 'auto',
        description: 'VNC server')
 option('vnc_jpeg', type : 'feature', value : 'auto',
        description: 'JPEG lossy compression for VNC server')
-option('vnc_png', type : 'feature', value : 'auto',
-       description: 'PNG compression for VNC server')
 option('vnc_sasl', type : 'feature', value : 'auto',
        description: 'SASL authentication for VNC server')
 option('vte', type : 'feature', value : 'auto',
diff --git a/ui/vnc-enc-tight.c b/ui/vnc-enc-tight.c
index cebd35841a..a23ad712eb 100644
--- a/ui/vnc-enc-tight.c
+++ b/ui/vnc-enc-tight.c
@@ -32,7 +32,7 @@
    INT32 definitions between jmorecfg.h (included by jpeglib.h) and
    Win32 basetsd.h (included by windows.h). */
 
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
 /* The following define is needed by pngconf.h. Otherwise it won't compile,
    because setjmp.h was already included by qemu-common.h. */
 #define PNG_SKIP_SETJMP_CHECK
@@ -95,7 +95,7 @@ static const struct {
 };
 #endif
 
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
 static const struct {
     int png_zlib_level, png_filters;
 } tight_png_conf[] = {
@@ -919,7 +919,7 @@ static int send_full_color_rect(VncState *vs, int x, int y, int w, int h)
     int stream = 0;
     ssize_t bytes;
 
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     if (tight_can_send_png_rect(vs, w, h)) {
         return send_png_rect(vs, x, y, w, h, NULL);
     }
@@ -966,7 +966,7 @@ static int send_mono_rect(VncState *vs, int x, int y,
     int stream = 1;
     int level = tight_conf[vs->tight->compression].mono_zlib_level;
 
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     if (tight_can_send_png_rect(vs, w, h)) {
         int ret;
         int bpp = vs->client_pf.bytes_per_pixel * 8;
@@ -1020,7 +1020,7 @@ static int send_mono_rect(VncState *vs, int x, int y,
 struct palette_cb_priv {
     VncState *vs;
     uint8_t *header;
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     png_colorp png_palette;
 #endif
 };
@@ -1082,7 +1082,7 @@ static int send_palette_rect(VncState *vs, int x, int y,
     int colors;
     ssize_t bytes;
 
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     if (tight_can_send_png_rect(vs, w, h)) {
         return send_png_rect(vs, x, y, w, h, palette);
     }
@@ -1233,7 +1233,7 @@ static int send_jpeg_rect(VncState *vs, int x, int y, int w, int h, int quality)
 /*
  * PNG compression stuff.
  */
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
 static void write_png_palette(int idx, uint32_t pix, void *opaque)
 {
     struct palette_cb_priv *priv = opaque;
@@ -1379,7 +1379,7 @@ static int send_png_rect(VncState *vs, int x, int y, int w, int h,
     buffer_reset(&vs->tight->png);
     return 1;
 }
-#endif /* CONFIG_VNC_PNG */
+#endif /* CONFIG_PNG */
 
 static void vnc_tight_start(VncState *vs)
 {
@@ -1706,7 +1706,7 @@ void vnc_tight_clear(VncState *vs)
 #ifdef CONFIG_VNC_JPEG
     buffer_free(&vs->tight->jpeg);
 #endif
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     buffer_free(&vs->tight->png);
 #endif
 }
diff --git a/ui/vnc.c b/ui/vnc.c
index 3ccd33dedc..a588ddff1c 100644
--- a/ui/vnc.c
+++ b/ui/vnc.c
@@ -2165,7 +2165,7 @@ static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
             vs->features |= VNC_FEATURE_TIGHT_MASK;
             vs->vnc_encoding = enc;
             break;
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
         case VNC_ENCODING_TIGHT_PNG:
             vs->features |= VNC_FEATURE_TIGHT_PNG_MASK;
             vs->vnc_encoding = enc;
@@ -3248,7 +3248,7 @@ static void vnc_connect(VncDisplay *vd, QIOChannelSocket *sioc,
 #ifdef CONFIG_VNC_JPEG
     buffer_init(&vs->tight->jpeg,     "vnc-tight-jpeg/%p", sioc);
 #endif
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     buffer_init(&vs->tight->png,      "vnc-tight-png/%p", sioc);
 #endif
     buffer_init(&vs->zlib.zlib,      "vnc-zlib/%p", sioc);
diff --git a/ui/vnc.h b/ui/vnc.h
index a7149831f9..a60fb13115 100644
--- a/ui/vnc.h
+++ b/ui/vnc.h
@@ -201,7 +201,7 @@ typedef struct VncTight {
 #ifdef CONFIG_VNC_JPEG
     Buffer jpeg;
 #endif
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     Buffer png;
 #endif
     int levels[4];
-- 
2.22.3



^ permalink raw reply related	[flat|nested] 22+ messages in thread

* Re: [PATCH v2 1/2] Replacing CONFIG_VNC_PNG with CONFIG_PNG
  2022-02-28  5:22 Kshitij Suri
@ 2022-02-28 12:52 ` Philippe Mathieu-Daudé
  0 siblings, 0 replies; 22+ messages in thread
From: Philippe Mathieu-Daudé @ 2022-02-28 12:52 UTC (permalink / raw)
  To: Kshitij Suri, qemu-devel
  Cc: soham.ghosh, prerna.saxena, armbru, dgilbert, kraxel, thuth,
	prachatos.mitra, eblake

On 28/2/22 06:22, Kshitij Suri wrote:
> Libpng is only detected if VNC is enabled currently. This patch adds a
> generalised png option in the meson build which is aimed to replace use of
> CONFIG_VNC_PNG with CONFIG_PNG.
> 
> Signed-off-by: Kshitij Suri <kshitij.suri@nutanix.com>
> ---
>   meson.build        | 10 +++++-----
>   meson_options.txt  |  4 ++--
>   ui/vnc-enc-tight.c | 18 +++++++++---------
>   ui/vnc.c           |  4 ++--
>   ui/vnc.h           |  2 +-
>   5 files changed, 19 insertions(+), 19 deletions(-)
> 
> diff --git a/meson.build b/meson.build
> index 8df40bfac4..3638957fc5 100644
> --- a/meson.build
> +++ b/meson.build
> @@ -1112,14 +1112,14 @@ if gtkx11.found()
>     x11 = dependency('x11', method: 'pkg-config', required: gtkx11.found(),
>                      kwargs: static_kwargs)
>   endif
> -vnc = not_found
>   png = not_found

^ dead code, otherwise:
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

> +png = dependency('libpng', required: get_option('png'),
> +                 method: 'pkg-config', kwargs: static_kwargs)
> +vnc = not_found


^ permalink raw reply	[flat|nested] 22+ messages in thread

* [PATCH v2 1/2] Replacing CONFIG_VNC_PNG with CONFIG_PNG
@ 2022-02-28  5:22 Kshitij Suri
  2022-02-28 12:52 ` Philippe Mathieu-Daudé
  0 siblings, 1 reply; 22+ messages in thread
From: Kshitij Suri @ 2022-02-28  5:22 UTC (permalink / raw)
  To: qemu-devel
  Cc: soham.ghosh, thuth, prerna.saxena, dgilbert, armbru,
	Kshitij Suri, kraxel, prachatos.mitra, eblake

Libpng is only detected if VNC is enabled currently. This patch adds a
generalised png option in the meson build which is aimed to replace use of
CONFIG_VNC_PNG with CONFIG_PNG.

Signed-off-by: Kshitij Suri <kshitij.suri@nutanix.com>
---
 meson.build        | 10 +++++-----
 meson_options.txt  |  4 ++--
 ui/vnc-enc-tight.c | 18 +++++++++---------
 ui/vnc.c           |  4 ++--
 ui/vnc.h           |  2 +-
 5 files changed, 19 insertions(+), 19 deletions(-)

diff --git a/meson.build b/meson.build
index 8df40bfac4..3638957fc5 100644
--- a/meson.build
+++ b/meson.build
@@ -1112,14 +1112,14 @@ if gtkx11.found()
   x11 = dependency('x11', method: 'pkg-config', required: gtkx11.found(),
                    kwargs: static_kwargs)
 endif
-vnc = not_found
 png = not_found
+png = dependency('libpng', required: get_option('png'),
+                 method: 'pkg-config', kwargs: static_kwargs)
+vnc = not_found
 jpeg = not_found
 sasl = not_found
 if get_option('vnc').allowed() and have_system
   vnc = declare_dependency() # dummy dependency
-  png = dependency('libpng', required: get_option('vnc_png'),
-                   method: 'pkg-config', kwargs: static_kwargs)
   jpeg = dependency('libjpeg', required: get_option('vnc_jpeg'),
                     method: 'pkg-config', kwargs: static_kwargs)
   sasl = cc.find_library('sasl2', has_headers: ['sasl/sasl.h'],
@@ -1537,9 +1537,9 @@ config_host_data.set('CONFIG_TPM', have_tpm)
 config_host_data.set('CONFIG_USB_LIBUSB', libusb.found())
 config_host_data.set('CONFIG_VDE', vde.found())
 config_host_data.set('CONFIG_VHOST_USER_BLK_SERVER', have_vhost_user_blk_server)
+config_host_data.set('CONFIG_PNG', png.found())
 config_host_data.set('CONFIG_VNC', vnc.found())
 config_host_data.set('CONFIG_VNC_JPEG', jpeg.found())
-config_host_data.set('CONFIG_VNC_PNG', png.found())
 config_host_data.set('CONFIG_VNC_SASL', sasl.found())
 config_host_data.set('CONFIG_VIRTFS', have_virtfs)
 config_host_data.set('CONFIG_VTE', vte.found())
@@ -3579,11 +3579,11 @@ summary_info += {'curses support':    curses}
 summary_info += {'virgl support':     virgl}
 summary_info += {'curl support':      curl}
 summary_info += {'Multipath support': mpathpersist}
+summary_info += {'PNG support':       png}
 summary_info += {'VNC support':       vnc}
 if vnc.found()
   summary_info += {'VNC SASL support':  sasl}
   summary_info += {'VNC JPEG support':  jpeg}
-  summary_info += {'VNC PNG support':   png}
 endif
 if targetos not in ['darwin', 'haiku', 'windows']
   summary_info += {'OSS support':     oss}
diff --git a/meson_options.txt b/meson_options.txt
index 52b11cead4..d85734f8e6 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -177,12 +177,12 @@ option('vde', type : 'feature', value : 'auto',
        description: 'vde network backend support')
 option('virglrenderer', type : 'feature', value : 'auto',
        description: 'virgl rendering support')
+option('png', type : 'feature', value : 'auto',
+       description: 'PNG support with libpng')
 option('vnc', type : 'feature', value : 'auto',
        description: 'VNC server')
 option('vnc_jpeg', type : 'feature', value : 'auto',
        description: 'JPEG lossy compression for VNC server')
-option('vnc_png', type : 'feature', value : 'auto',
-       description: 'PNG compression for VNC server')
 option('vnc_sasl', type : 'feature', value : 'auto',
        description: 'SASL authentication for VNC server')
 option('vte', type : 'feature', value : 'auto',
diff --git a/ui/vnc-enc-tight.c b/ui/vnc-enc-tight.c
index cebd35841a..a23ad712eb 100644
--- a/ui/vnc-enc-tight.c
+++ b/ui/vnc-enc-tight.c
@@ -32,7 +32,7 @@
    INT32 definitions between jmorecfg.h (included by jpeglib.h) and
    Win32 basetsd.h (included by windows.h). */
 
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
 /* The following define is needed by pngconf.h. Otherwise it won't compile,
    because setjmp.h was already included by qemu-common.h. */
 #define PNG_SKIP_SETJMP_CHECK
@@ -95,7 +95,7 @@ static const struct {
 };
 #endif
 
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
 static const struct {
     int png_zlib_level, png_filters;
 } tight_png_conf[] = {
@@ -919,7 +919,7 @@ static int send_full_color_rect(VncState *vs, int x, int y, int w, int h)
     int stream = 0;
     ssize_t bytes;
 
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     if (tight_can_send_png_rect(vs, w, h)) {
         return send_png_rect(vs, x, y, w, h, NULL);
     }
@@ -966,7 +966,7 @@ static int send_mono_rect(VncState *vs, int x, int y,
     int stream = 1;
     int level = tight_conf[vs->tight->compression].mono_zlib_level;
 
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     if (tight_can_send_png_rect(vs, w, h)) {
         int ret;
         int bpp = vs->client_pf.bytes_per_pixel * 8;
@@ -1020,7 +1020,7 @@ static int send_mono_rect(VncState *vs, int x, int y,
 struct palette_cb_priv {
     VncState *vs;
     uint8_t *header;
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     png_colorp png_palette;
 #endif
 };
@@ -1082,7 +1082,7 @@ static int send_palette_rect(VncState *vs, int x, int y,
     int colors;
     ssize_t bytes;
 
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     if (tight_can_send_png_rect(vs, w, h)) {
         return send_png_rect(vs, x, y, w, h, palette);
     }
@@ -1233,7 +1233,7 @@ static int send_jpeg_rect(VncState *vs, int x, int y, int w, int h, int quality)
 /*
  * PNG compression stuff.
  */
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
 static void write_png_palette(int idx, uint32_t pix, void *opaque)
 {
     struct palette_cb_priv *priv = opaque;
@@ -1379,7 +1379,7 @@ static int send_png_rect(VncState *vs, int x, int y, int w, int h,
     buffer_reset(&vs->tight->png);
     return 1;
 }
-#endif /* CONFIG_VNC_PNG */
+#endif /* CONFIG_PNG */
 
 static void vnc_tight_start(VncState *vs)
 {
@@ -1706,7 +1706,7 @@ void vnc_tight_clear(VncState *vs)
 #ifdef CONFIG_VNC_JPEG
     buffer_free(&vs->tight->jpeg);
 #endif
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     buffer_free(&vs->tight->png);
 #endif
 }
diff --git a/ui/vnc.c b/ui/vnc.c
index 3ccd33dedc..a588ddff1c 100644
--- a/ui/vnc.c
+++ b/ui/vnc.c
@@ -2165,7 +2165,7 @@ static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
             vs->features |= VNC_FEATURE_TIGHT_MASK;
             vs->vnc_encoding = enc;
             break;
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
         case VNC_ENCODING_TIGHT_PNG:
             vs->features |= VNC_FEATURE_TIGHT_PNG_MASK;
             vs->vnc_encoding = enc;
@@ -3248,7 +3248,7 @@ static void vnc_connect(VncDisplay *vd, QIOChannelSocket *sioc,
 #ifdef CONFIG_VNC_JPEG
     buffer_init(&vs->tight->jpeg,     "vnc-tight-jpeg/%p", sioc);
 #endif
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     buffer_init(&vs->tight->png,      "vnc-tight-png/%p", sioc);
 #endif
     buffer_init(&vs->zlib.zlib,      "vnc-zlib/%p", sioc);
diff --git a/ui/vnc.h b/ui/vnc.h
index a7149831f9..a60fb13115 100644
--- a/ui/vnc.h
+++ b/ui/vnc.h
@@ -201,7 +201,7 @@ typedef struct VncTight {
 #ifdef CONFIG_VNC_JPEG
     Buffer jpeg;
 #endif
-#ifdef CONFIG_VNC_PNG
+#ifdef CONFIG_PNG
     Buffer png;
 #endif
     int levels[4];
-- 
2.22.3



^ permalink raw reply related	[flat|nested] 22+ messages in thread

end of thread, other threads:[~2022-03-29 10:06 UTC | newest]

Thread overview: 22+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-03-28 16:54 [PATCH v2 1/2] Replacing CONFIG_VNC_PNG with CONFIG_PNG Kshitij Suri
2022-03-28 16:54 ` [PATCH v2 2/2] Added parameter to take screenshot with screendump as PNG Kshitij Suri
2022-03-29  6:42   ` Markus Armbruster
2022-03-29  7:06     ` Kshitij Suri
2022-03-29  7:59       ` On patch series version tags, and also cover letters (was: [PATCH v2 2/2] Added parameter to take screenshot with screendump as PNG) Markus Armbruster
2022-03-29  8:57         ` Kshitij Suri
2022-03-29  9:01         ` Daniel P. Berrangé
2022-03-29  9:40           ` Kshitij Suri
2022-03-29  9:48         ` Peter Maydell
2022-03-29  9:55           ` Kshitij Suri
2022-03-29  9:59             ` Peter Maydell
  -- strict thread matches above, loose matches on Subject: below --
2022-03-22 10:49 [PATCH v2 1/2] Replacing CONFIG_VNC_PNG with CONFIG_PNG Kshitij Suri
2022-03-28  9:49 ` Kshitij Suri
2022-03-22  8:18 Kshitij Suri
2022-03-22  9:42 ` Daniel P. Berrangé
2022-03-22  9:52   ` Kshitij Suri
2022-03-15  4:47 Kshitij Suri
2022-03-15  9:17 ` Paolo Bonzini
2022-03-01  6:44 Kshitij Suri
2022-03-07 16:40 ` Kshitij Suri
2022-02-28  5:22 Kshitij Suri
2022-02-28 12:52 ` Philippe Mathieu-Daudé

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