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commit 10ac58d34771e81c0c00f1e5d6d812427af2c2d8
Author: Cyril Hrubis <metan(a)ucw.cz>
Date: Mon Dec 31 17:28:54 2012 +0100
doc: backends, coding_style: Typos and fixes.
diff --git a/doc/backends.txt b/doc/backends.txt
index a4fb226..aca70f6 100644
--- a/doc/backends.txt
+++ b/doc/backends.txt
@@ -7,7 +7,8 @@ initialization interface each backend has it's specific function and semantics
but once backend is initialized the backend structure provides unified API for
controlling the drawing.
-So far there are backends for Linux mmaped frame-buffer, libSDL and X11.
+So far there are backends for Linux mmaped 'frame-buffer', 'libSDL' and
+'X Window System'.
TIP: For example usage see backend link:example_backend.html[example].
@@ -220,9 +221,9 @@ WARNING: It's very important to call this functions on application exit. If you
doesn't do so, the state of the display, resolution etc. may not be
reset back to its original state. This includes program crashes and
iterruptions. Also this function may not be signal-async-safe, it's
- better to set signal hanlers that calls it as this usually works and
- not doing so may leave non-working system with black display or
- non-responding keyboard.
+ better to set signal hanlers that calls it on SEGFAULT and SIGBUS
+ as this usually works and not doing so may leave non-working system
+ with black display or non-responding keyboard.
[source,c]
-------------------------------------------------------------------------------
@@ -273,14 +274,16 @@ void GP_BackendWait(GP_Backend *backend);
Blocks until backend event arrives.
-NOTE: Events recieved by backend are not necessarily translated into the input
- events.
+[NOTE]
+Events recieved by backend are not necessarily translated into the input
+events.
-WARNING: Using GP_BackendWait() in multithreaded program will most likely
- cause deadlocks. As the backend data structures and connection is
- guarded by a lock any other backend function (called from different
- thread while GP_BackendWait() is blocking) will lock until
- GP_BackendWait() returns (i.e. event was recieved).
+[WARNING]
+Using GP_BackendWait() in multithreaded program will most likely cause
+deadlocks. As the backend data structures and connection is guarded by a lock
+any other backend function (called from different thread while
+GP_BackendWait() is blocking) will lock until GP_BackendWait() returns (i.e.
+event was recieved).
[source,c]
-------------------------------------------------------------------------------
@@ -326,4 +329,4 @@ multithreaded application where one threads waits for events and others draws
into the buffer so you can stop the drawing threads before the backend context
size change.
-See input link:input.html[input events] for more information.
+TIP: For more information see link:input.html[input events] documentation.
diff --git a/doc/coding_style.txt b/doc/coding_style.txt
index 37bb19e..b4afeaf 100644
--- a/doc/coding_style.txt
+++ b/doc/coding_style.txt
@@ -19,7 +19,7 @@ enligthening reading).
* We use tabs for indentation and tab is eight spaces wide.
-* Lines should be maximally 80 chars long.
+* Lines should be at most 80 chars long.
* No additional whitespaces (other than newline) at the end of line.
@@ -101,26 +101,26 @@ break;
}
----
-TIP: You can use Linux Kernel +scripts/checkpatch.pl+ to check your code.
+TIP: You can use Linux Kernel 'scripts/checkpatch.pl' to check your code.
GFXprim Specific Rules
^^^^^^^^^^^^^^^^^^^^^^
* Library external API uses CamelCase
-** Together with mandatory +GP_+ prefix.
-** For example +GP_PixelType+, +GP_Context+, etc.
+** Together with mandatory 'GP_' prefix.
+** For example 'GP_PixelType', 'GP_Context', etc.
** We will not change that, get over it. (It could have been worse, trust me.)
* Basic library types are typedefed
-** We have +GP_Size+ and +GP_Coord+ integer types to better distinguish
+** We have 'GP_Size' and 'GP_Coord' integer types to better distinguish
roles of function parameters.
-** The basic structures are also typedefed so you can wite +GP_Context+
- instead of +struct GP_Context+.
+** The basic structures are also typedefed so you can wite 'GP_Context'
+ instead of 'struct GP_Context'.
** Other uses of typedef are frowned upon.
-* When you add a externally symbol visible symbol, i.e. new API function
- please add its name into the corresponding file at +build/syms/+. You may
- also run the +buld/check_symbols.sh+ script to check that you haven't
+* When you add an externally visible symbol, i.e. new API function
+ please add its name into the corresponding file at 'build/syms/'. You may
+ also run the 'buld/check_symbols.sh' script to check that you haven't
accidentally exposed intenal only interfaces.
Python Coding Style
-----------------------------------------------------------------------
Summary of changes:
doc/backends.txt | 27 +++++++++++++++------------
doc/coding_style.txt | 20 ++++++++++----------
2 files changed, 25 insertions(+), 22 deletions(-)
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commit fd131ab40d827e66825dfe9202e2e02021ba07c1
Author: Cyril Hrubis <metan(a)ucw.cz>
Date: Mon Dec 31 17:08:21 2012 +0100
doc: Add coding style document.
diff --git a/doc/Makefile b/doc/Makefile
index bbb1ab0..23d87e7 100644
--- a/doc/Makefile
+++ b/doc/Makefile
@@ -1,7 +1,7 @@
SOURCES=general.txt context.txt loaders.txt filters.txt basic_types.txt drawing_api.txt backends.txt gamma.txt grabbers.txt environment_variables.txt debug.txt core.txt api.txt input.txt - gen.txt pixels.txt coordinate_system.txt
+ gen.txt pixels.txt coordinate_system.txt coding_style.txt
EXAMPLE_SOURCES=$(wildcard example_*.txt)
diff --git a/doc/api.txt b/doc/api.txt
index 7d4898a..4a75fd4 100644
--- a/doc/api.txt
+++ b/doc/api.txt
@@ -80,3 +80,11 @@ GFXprim Internals
Describes structure and basic usage of the templating engine (C code
generator).
+
+
+Development
+-----------
+
+. link:coding_style.html[Coding Style]
+ +
+ C and Python coding style.
+ +
diff --git a/doc/coding_style.txt b/doc/coding_style.txt
new file mode 100644
index 0000000..37bb19e
--- /dev/null
+++ b/doc/coding_style.txt
@@ -0,0 +1,129 @@
+Coding Style
+------------
+
+This document defines coding style for GFXprim.
+
+C Coding Style
+~~~~~~~~~~~~~~
+
+GFXprim is written in C. There is no C++ code in and I mean it. A few headers
+do contain '#ifndef __cplusplus' so that you can interface GFXprim headers as
+'extern C' without problems. If this doesn't work, let us know.
+
+GFXprim follows mostly Linux Kernel coding style, see
+'Documentation/CodingStyle' in the Linux Kernel source or follow this
+link:http://www.kernel.org/doc/Documentation/CodingStyle[link] (it's funny and
+enligthening reading).
+
+.Indentation and whitespaces
+
+* We use tabs for indentation and tab is eight spaces wide.
+
+* Lines should be maximally 80 chars long.
+
+* No additional whitespaces (other than newline) at the end of line.
+
+* Each file must end with newline (most editors do that automatically, beware
+ of Kate).
+
+.Braces and Spaces
+
+* Avoid tricky expressions if possible ;)
+
+* Do not put multiple statements on a single line.
++
+[source,c]
+----
+/* WRONG */
+if (something) do_work();
+ do_other();
+
+/* RIGHT */
+if (something)
+ do_work();
+
+do_other();
+----
+
+* Each block that has more than one line should be enclosed in
+ curly braces.
++
+Also if one part of if then else is enclosed in
+curly braces the other one should be enclosed too.
++
+[source,c]
+----
+/* WRONG */
+if (something)
+ do_other_thing();
+ else if (something_else)
+ do_thing();
+ else
+ return;
+
+/* RIGHT */
+if (something) {
+ do_other_thing();
+} else {
+ if (something_else)
+ do_thing();
+ else
+ return;
+}
+----
+
+* On the other hand do not use braces unnecesarily.
++
+[source,c]
+----
+/* WRONG */
+if (something) {
+ do_work();
+}
+
+/* RIGHT */
+if (something)
+ do_work();
+----
+
+* The preffered way of writing switch is as follows:
++
+[source,c]
+----
+switch (var) {
+case XYZ:
+ do_something():
+break;
+case ABC:
+ return 1;
+default:
+break;
+}
+----
+
+TIP: You can use Linux Kernel +scripts/checkpatch.pl+ to check your code.
+
+GFXprim Specific Rules
+^^^^^^^^^^^^^^^^^^^^^^
+
+* Library external API uses CamelCase
+** Together with mandatory +GP_+ prefix.
+** For example +GP_PixelType+, +GP_Context+, etc.
+** We will not change that, get over it. (It could have been worse, trust me.)
+
+* Basic library types are typedefed
+** We have +GP_Size+ and +GP_Coord+ integer types to better distinguish
+ roles of function parameters.
+** The basic structures are also typedefed so you can wite +GP_Context+
+ instead of +struct GP_Context+.
+** Other uses of typedef are frowned upon.
+
+* When you add a externally symbol visible symbol, i.e. new API function
+ please add its name into the corresponding file at +build/syms/+. You may
+ also run the +buld/check_symbols.sh+ script to check that you haven't
+ accidentally exposed intenal only interfaces.
+
+Python Coding Style
+~~~~~~~~~~~~~~~~~~~
+
+TODO
-----------------------------------------------------------------------
Summary of changes:
doc/Makefile | 2 +-
doc/api.txt | 8 +++
doc/coding_style.txt | 129 ++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 138 insertions(+), 1 deletions(-)
create mode 100644 doc/coding_style.txt
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commit ee2a7bf0f846b6283b0c3cab6acb7c5afb4ca93b
Author: Cyril Hrubis <metan(a)ucw.cz>
Date: Sat Dec 29 11:38:51 2012 +0100
loaders: GP_Loader: Fix previous commit.
We need to do access() first then stat().
diff --git a/libs/loaders/GP_Loader.c b/libs/loaders/GP_Loader.c
index 05b1240..c3769a6 100644
--- a/libs/loaders/GP_Loader.c
+++ b/libs/loaders/GP_Loader.c
@@ -234,16 +234,7 @@ GP_Context *GP_LoadImage(const char *src_path, GP_ProgressCallback *callback)
{
int saved_errno;
struct stat st;
-
- if (stat(src_path, &st)) {
- GP_WARN("Failed to stat '%s': %s", src_path, strerror(errno));
- } else {
- if (st.st_mode & S_IFDIR) {
- errno = EISDIR;
- return NULL;
- }
- }
-
+
if (access(src_path, R_OK)) {
saved_errno = errno;
@@ -256,6 +247,15 @@ GP_Context *GP_LoadImage(const char *src_path, GP_ProgressCallback *callback)
return NULL;
}
+ if (stat(src_path, &st)) {
+ GP_WARN("Failed to stat '%s': %s", src_path, strerror(errno));
+ } else {
+ if (st.st_mode & S_IFDIR) {
+ errno = EISDIR;
+ return NULL;
+ }
+ }
+
GP_Context *img;
const GP_Loader *ext_load = NULL, *sig_load;
-----------------------------------------------------------------------
Summary of changes:
libs/loaders/GP_Loader.c | 20 ++++++++++----------
1 files changed, 10 insertions(+), 10 deletions(-)
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commit 3d1396ad2aa8763807e048d91cde205e764b237f
Author: Cyril Hrubis <metan(a)ucw.cz>
Date: Sat Dec 29 00:22:20 2012 +0100
loaders: GP_Load: Add check for directory.
diff --git a/libs/loaders/GP_Loader.c b/libs/loaders/GP_Loader.c
index fdd2641..05b1240 100644
--- a/libs/loaders/GP_Loader.c
+++ b/libs/loaders/GP_Loader.c
@@ -29,6 +29,9 @@
#include <string.h>
#include <unistd.h>
#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
#include "core/GP_Debug.h"
@@ -230,7 +233,17 @@ static const GP_Loader *loader_by_signature(const char *path)
GP_Context *GP_LoadImage(const char *src_path, GP_ProgressCallback *callback)
{
int saved_errno;
-
+ struct stat st;
+
+ if (stat(src_path, &st)) {
+ GP_WARN("Failed to stat '%s': %s", src_path, strerror(errno));
+ } else {
+ if (st.st_mode & S_IFDIR) {
+ errno = EISDIR;
+ return NULL;
+ }
+ }
+
if (access(src_path, R_OK)) {
saved_errno = errno;
@@ -242,7 +255,7 @@ GP_Context *GP_LoadImage(const char *src_path, GP_ProgressCallback *callback)
return NULL;
}
-
+
GP_Context *img;
const GP_Loader *ext_load = NULL, *sig_load;
-----------------------------------------------------------------------
Summary of changes:
libs/loaders/GP_Loader.c | 17 +++++++++++++++--
1 files changed, 15 insertions(+), 2 deletions(-)
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commit f1688be3cd5e34c596afc0027b9c07d2cfec4325
Merge: 4cc70c9 e13f2d1
Author: Cyril Hrubis <metan(a)ucw.cz>
Date: Fri Dec 28 11:46:53 2012 +0100
Merge ssh://repo.or.cz/srv/git/gfxprim
http://repo.or.cz/w/gfxprim.git/commit/4cc70c909eb0e232bee1263f970d3f2262e3…
commit 4cc70c909eb0e232bee1263f970d3f2262e34d96
Author: Cyril Hrubis <metan(a)ucw.cz>
Date: Fri Dec 28 11:46:01 2012 +0100
spiv: Filter out non image files in dir traversal.
diff --git a/demos/spiv/image_list.c b/demos/spiv/image_list.c
index 1376130..fd35669 100644
--- a/demos/spiv/image_list.c
+++ b/demos/spiv/image_list.c
@@ -28,6 +28,7 @@
#include <errno.h>
#include <string.h>
+#include <loaders/GP_Loader.h>
#include <core/GP_Debug.h>
#include "image_list.h"
@@ -64,8 +65,10 @@ static int dir_filter(const struct dirent *d)
if (!strcmp(d->d_name, ".."))
return 0;
- //TODO: filter out directories, non-image files?
-
+ //TODO: filter out directories
+
+ if (GP_MatchExtension(d->d_name) == NULL)
+ return 0;
GP_DEBUG(4, "Adding file '%s'", d->d_name);
http://repo.or.cz/w/gfxprim.git/commit/49cc14c142e17b791edbcce2a3b6ad5eef50…
commit 49cc14c142e17b791edbcce2a3b6ad5eef503227
Author: Cyril Hrubis <metan(a)ucw.cz>
Date: Fri Dec 28 11:43:11 2012 +0100
loaders: Add function to match loader by filename.
diff --git a/build/syms/Loaders_symbols.txt b/build/syms/Loaders_symbols.txt
index 2de93ed..bce6650 100644
--- a/build/syms/Loaders_symbols.txt
+++ b/build/syms/Loaders_symbols.txt
@@ -53,6 +53,7 @@ GP_SaveTmpFile
GP_LoadTmpFile
GP_MatchSignature
+GP_MatchExtension
GP_LoadImage
GP_SaveImage
GP_LoadMetaData
diff --git a/doc/loaders.txt b/doc/loaders.txt
index aa16606..907a171 100644
--- a/doc/loaders.txt
+++ b/doc/loaders.txt
@@ -41,7 +41,7 @@ Image Loader
[source,c]
-------------------------------------------------------------------------------
-#include <loaders/GP_Loaders.h>
+#include <loaders/GP_Loader.h>
/* or */
#include <GP.h>
@@ -66,7 +66,7 @@ stdout.
[source,c]
-------------------------------------------------------------------------------
-#include <loaders/GP_Loaders.h>
+#include <loaders/GP_Loader.h>
/* or */
#include <GP.h>
@@ -164,7 +164,7 @@ link:example_loader_registration.html[example].
[source,c]
-------------------------------------------------------------------------------
-#include <loaders/GP_Loaders.h>
+#include <loaders/GP_Loader.h>
/* or */
#include <GP.h>
@@ -175,6 +175,19 @@ Returns pointer to image loader accordingly to image signature or 'NULL' if no
suitable loader was found. The buf pointer must point to a buffer at least 32
bytes long.
+[source,c]
+-------------------------------------------------------------------------------
+#include <loaders/GP_Loader.h>
+/* or */
+#include <GP.h>
+
+const GP_Loader *GP_MatchExtension(const char *path)
+-------------------------------------------------------------------------------
+
+Matches loader by the file extension. This function does not check that the
+file exists or that it could be opened it only looks at the extension (i.e.
+string after the dot) and matches it agains known extensions.
+
WARNING: If you attempt to modify the content of the strucutre the behavior is
undefined. Most likely the program will crash.
diff --git a/include/loaders/GP_Loader.h b/include/loaders/GP_Loader.h
index 6730613..f80cf58 100644
--- a/include/loaders/GP_Loader.h
+++ b/include/loaders/GP_Loader.h
@@ -108,6 +108,11 @@ typedef struct GP_Loader {
*/
const GP_Loader *GP_MatchSignature(const void *buf);
+/*
+ * Tries to match loader by extension. Returns NULL if no loader was found.
+ */
+const GP_Loader *GP_MatchExtension(const char *path);
+
void GP_LoaderRegister(GP_Loader *self);
void GP_LoaderUnregister(GP_Loader *self);
diff --git a/libs/loaders/GP_Loader.c b/libs/loaders/GP_Loader.c
index 1d15ec7..fdd2641 100644
--- a/libs/loaders/GP_Loader.c
+++ b/libs/loaders/GP_Loader.c
@@ -248,7 +248,7 @@ GP_Context *GP_LoadImage(const char *src_path, GP_ProgressCallback *callback)
ext_load = loader_by_filename(src_path);
- if (ext_load != NULL) {
+ if (ext_load != NULL && ext_load->Load != NULL) {
img = ext_load->Load(src_path, callback);
if (img)
@@ -259,7 +259,7 @@ GP_Context *GP_LoadImage(const char *src_path, GP_ProgressCallback *callback)
* Avoid further work if signature was correct but the loader issued
* ENOSYS.
*/
- if (errno == ENOSYS)
+ if (ext_load != NULL && errno == ENOSYS)
return NULL;
sig_load = loader_by_signature(src_path);
@@ -269,7 +269,7 @@ GP_Context *GP_LoadImage(const char *src_path, GP_ProgressCallback *callback)
src_path, ext_load->fmt_name, sig_load->fmt_name);
}
- if (sig_load)
+ if (sig_load && sig_load->Load != NULL)
return sig_load->Load(src_path, callback);
errno = ENOSYS;
@@ -445,3 +445,8 @@ const GP_Loader *GP_MatchSignature(const void *buf)
return NULL;
}
+
+const GP_Loader *GP_MatchExtension(const char *path)
+{
+ return loader_by_filename(path);
+}
http://repo.or.cz/w/gfxprim.git/commit/160879734f14a7aa8f676660fdc1bee7a2b2…
commit 160879734f14a7aa8f676660fdc1bee7a2b256bb
Author: Cyril Hrubis <metan(a)ucw.cz>
Date: Thu Dec 27 11:45:47 2012 +0100
doc: Add more text formatting.
diff --git a/doc/api.txt b/doc/api.txt
index a03d282..7d4898a 100644
--- a/doc/api.txt
+++ b/doc/api.txt
@@ -70,6 +70,8 @@ GFXprim API
Video grabbers interface such as V4L2.
+
+TIP: There is also a nice page with code link:examples.html[examples].
+
GFXprim Internals
-----------------
@@ -78,5 +80,3 @@ GFXprim Internals
Describes structure and basic usage of the templating engine (C code
generator).
+
-
-There is also a nice page with code link:examples.html[examples].
diff --git a/doc/backends.txt b/doc/backends.txt
index 5ee7e78..a4fb226 100644
--- a/doc/backends.txt
+++ b/doc/backends.txt
@@ -9,7 +9,7 @@ controlling the drawing.
So far there are backends for Linux mmaped frame-buffer, libSDL and X11.
-For example usage see backend link:example_backend.html[example].
+TIP: For example usage see backend link:example_backend.html[example].
Initialization functions
------------------------
diff --git a/doc/core.txt b/doc/core.txt
index 3e20ee2..a59938d 100644
--- a/doc/core.txt
+++ b/doc/core.txt
@@ -86,7 +86,7 @@ bitmap loaders 'errno' is set to 'ECANCELED'.
The callback, if supported, is the last parameter of a function.
-For example usage see progress callback
+TIP: For example usage see progress callback
link:example_loaders_progress_callback.html[example].
Temporary Buffer Allocator
diff --git a/doc/grabbers.txt b/doc/grabbers.txt
index a794847..ce71654 100644
--- a/doc/grabbers.txt
+++ b/doc/grabbers.txt
@@ -8,7 +8,7 @@ There is currently V4L2 driver that implements a grabber.
To link against grabbers use +-lGP_grabbers+ or better
+`gfxprim-config --libs-grabbers`+ in your linker flags.
-For example usage see grabber link:example_v4l2.html[examples].
+TIP: For example usage see grabber link:example_v4l2.html[examples].
Grabber API
~~~~~~~~~~~
diff --git a/doc/input.txt b/doc/input.txt
index 35ff473..f48f24d 100644
--- a/doc/input.txt
+++ b/doc/input.txt
@@ -15,7 +15,7 @@ difference is that events that belongs together are delivered together (the
kernel input API sends one event for each value i.e. x or y coordinate and has
sync event that finalizes the changes in the values).
-For example usage see input events link:example_input.html[example].
+TIP: For example usage see input events link:example_input.html[example].
Event Structure Description
~~~~~~~~~~~~~~~~~~~~~~~~~~~
diff --git a/doc/loaders.txt b/doc/loaders.txt
index e12c6f8..aa16606 100644
--- a/doc/loaders.txt
+++ b/doc/loaders.txt
@@ -159,7 +159,7 @@ unregister your own loaders by 'GP_LoaderRegister()' and
'GP_LoaderUnregister()'. Once image loader is registered the generic loading
functions could use it to load and save images.
-For example usage see image loader registration
+TIP: For example usage see image loader registration
link:example_loader_registration.html[example].
[source,c]
-----------------------------------------------------------------------
Summary of changes:
build/syms/Loaders_symbols.txt | 1 +
demos/spiv/image_list.c | 7 +++++--
doc/api.txt | 4 ++--
doc/backends.txt | 2 +-
doc/core.txt | 2 +-
doc/grabbers.txt | 2 +-
doc/input.txt | 2 +-
doc/loaders.txt | 21 +++++++++++++++++----
include/loaders/GP_Loader.h | 5 +++++
libs/loaders/GP_Loader.c | 11 ++++++++---
10 files changed, 42 insertions(+), 15 deletions(-)
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