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31 commits

Author SHA1 Message Date
Nicolas Dufresne
d99e621533 bytereader: Use concistant derefence method 
This is minor style fix to not mix *var and var[N].
 2014-06-10 10:23:13 -04:00
Sungho Bae
d3b2f6e4b8 bytereader: Use pointer instead of index access 
Currently the scan uses Boyer-moore method and its performance is good.
but, it can be optimized from an implementation of view.

The original scan code is implemented by byte array and index-based access.
In _scan_for_start_code(), the index is increasing from start to end and the
base address of the byte array is referred to as return value.

In the case, index-based access can be replaced by pointer access, which
improve the performance by removing index-related operations.

Its performace is enhanced by approximately 8% on arm-based embedded devices.
Although it seems trivial, it can affect the overall performance because the
_scan_for_start_code() function is very often called when H.264/H.265 video is
played.

In addition, the technique can apply for all architectures and it is good in
view of readability and maintainability.

https://bugzilla.gnome.org/show_bug.cgi?id=731442
 2014-06-10 09:35:38 -04:00
Sebastian Rasmussen
53ae1b2c9c docs: Fix typos in function/object descriptions 
Fixes https://bugzilla.gnome.org/show_bug.cgi?id=720029
 2013-12-07 17:11:12 +00:00
Nicolas Dufresne
de75bca9b3 bytereader: Accelerate MPEG/H264 start code scanning 
Accelerate MPEG/H264 start code scanning using Boyer-Moor bad character
heuristic.

https://bugzilla.gnome.org/show_bug.cgi?id=702357
 2013-08-10 18:54:34 -04:00
Tim-Philipp Müller
666c8c11c6 Fix FSF address 
https://bugzilla.gnome.org/show_bug.cgi?id=687520
 2012-11-03 20:44:48 +00:00
Edward Hervey
d3ffa82639 Remove 0.10-related documentation and "Since" markers 2012-07-10 12:03:27 +02:00
Wim Taymans
cf18fa9ce5 Merge branch 'master' into 0.11 2011-07-27 12:50:39 +02:00
Evan Nemerson
cf6b41aa78 base: add missing (out) annotation for byte reader/writer functions 
https://bugzilla.gnome.org/show_bug.cgi?id=655381
 2011-07-27 10:12:33 +01:00
Wim Taymans
d82c8bd2af memory: port code to new buffer data API 2011-03-28 20:08:45 +02:00
Tim-Philipp Müller
686b16756d docs: libgstbase: more gobject introspection annotations 
Many of these are superfluous and were added for clarity.
 2010-12-07 18:37:04 +00:00
Tim-Philipp Müller
07755fd5ee bytereader: const-ify byte reader argument in peek/scan API 
Because we can.
 2010-10-22 12:04:09 +01:00
Sebastian Dröge
10c18151d2 bytewriter: Add guards to the inlined get_pos/get_remaining/get_size/etc functions 2010-10-03 15:32:41 +02:00
Thiago Santos
1b99e2e2dc bytereader: Fix docs 
Fix typo in docs for the unsigned peek functions
 2010-08-04 13:47:23 -03:00
Tim-Philipp Müller
07d953b791 docs: fix Since: tags in docs for newly-added API 2009-10-07 23:34:44 +01:00
Sebastian Dröge
f4c12be109 bitreader/bytereader: API: Add gst_(bit|byte)_reader_get_size() 
... and GST_(BYTE|BIT)_READER() casts.
 2009-10-07 17:59:51 +02:00
Sebastian Dröge
c7438c738b bytereader,bitreader: Remove FIXME 0.11 to remove non-inlined functions 
The normal functions are always useful to have for bindings, especially
runtime-created bindings like Seed or new GObject-Introspection based
Python bindings.
 2009-10-07 17:59:51 +02:00
Tim-Philipp Müller
d600ce0a29 bytereader: add inline version of gst_byte_reader_skip 2009-10-07 00:52:23 +01:00
Tim-Philipp Müller
96a565bdca bitreader, bytereader: add some FIXME 0.11 comments and fix indenting 2009-09-06 19:44:20 +01:00
Tim-Philipp Müller
4c103b00b5 bytereader: add unchecked and inline versions of the float getters/peekers 
API: gst_byte_reader_get_float*_unchecked()
 2009-09-06 18:51:18 +01:00
Tim-Philipp Müller
31ab124487 bytereader: add inline versions of the most common getters and setters 2009-09-06 18:51:18 +01:00
Tim-Philipp Müller
080b2e4fd5 bytereader: add inlined _unchecked() variants for some functions 
API: gst_byte_reader_skip_unchecked()
API: gst_byte_reader_peek_*_unchecked()
API: gst_byte_reader_get_*_unchecked()
API: gst_byte_reader_{peek,get,dup}_data_unchecked()
 2009-09-06 18:51:13 +01:00
Tim-Philipp Müller
b9657d7477 docs: fix docs for gst_byte_reader_{get|peek}_float*() 2009-09-04 19:50:39 +01:00
Mark Nauwelaerts
eeb6d810bc bytereader: avoid wrap-around in buffer size checks. Fixes #590622. 2009-08-03 20:55:21 +02:00
Tim-Philipp Müller
79c8e24885 docs: fix API docs for gst_{adapter|byte_reader}_masked_scan_uint32 
Clarify byte reader docs a bit: offset is relative to the current
position of the reader, not to the start of the data. Also, the
examples in both the adapter docs and the byte reader docs have
the mask and pattern arguments swapped (see #587561). Spotted
by Carl-Anton Ingmarsson.
 2009-07-16 14:17:03 +01:00
Tim-Philipp Müller
6b64d41937 bytereader: add a bunch of utility functions for strings and a data dup function 
API: gst_byte_reader_dup_data
API: gst_byte_reader_dup_string
API: gst_byte_reader_dup_string_utf8
API: gst_byte_reader_dup_string_utf16
API: gst_byte_reader_dup_string_utf32
API: gst_byte_reader_skip_string
API: gst_byte_reader_skip_string_utf8
API: gst_byte_reader_skip_string_utf16
API: gst_byte_reader_skip_string_utf32
API: gst_byte_reader_peek_string
API: gst_byte_reader_peek_string_utf8
API: gst_byte_reader_get_string
API: gst_byte_reader_get_string_utf8

And some basic unit tests. Fixes #586568.
 2009-06-23 02:17:48 +01:00
Tim-Philipp Müller
674447fafe bytereader: add gst_byte_reader_masked_scan_uint32() 
Add a pattern scan function similar to the one recently added to
GstAdapter, and a unit test (based on the adapter one).
Fixes #585592.

API: add gst_byte_reader_masked_scan_uint32()
 2009-06-13 10:53:49 +01:00
Sebastian Dröge
d3cb47b923 libs/gst/base/gstbytereader.c: Use GST_(READ|WRITE)_(FLOAT|DOUBLE)_(LE|BE) instead of our own copies of them. 
Original commit message from CVS:
* libs/gst/base/gstbytereader.c:
Use GST_(READ|WRITE)_(FLOAT|DOUBLE)_(LE|BE) instead of our own
copies of them.
 2008-10-23 07:11:54 +00:00
Sebastian Dröge
61ee0f414a API: Add gst_byte_reader_get_data and gst_byte_reader_peek_data to get a pointer to the data at the current position ... 
Original commit message from CVS:
* docs/libs/gstreamer-libs-sections.txt:
* libs/gst/base/gstbytereader.c: (gst_byte_reader_get_data),
(gst_byte_reader_peek_data):
* libs/gst/base/gstbytereader.h:
* win32/common/libgstbase.def:
API: Add gst_byte_reader_get_data and gst_byte_reader_peek_data
to get a pointer to the data at the current position and have
a guaranteed size.
 2008-10-22 14:47:04 +00:00
Jan Schmidt
446e8cb5e6 libs/gst/base/: Fix the names of 2 functions in the docs strings. 
Original commit message from CVS:
* libs/gst/base/gstbitreader.c:
* libs/gst/base/gstbytereader.c:
Fix the names of 2 functions in the docs strings.
 2008-10-22 13:47:20 +00:00
Sebastian Dröge
2ba1f3a6a2 libs/gst/base/gstbytereader.c: Use new GST_READ_UINT24_(LE|BE) macros. 
Original commit message from CVS:
* libs/gst/base/gstbytereader.c: (gst_byte_reader_get_uint24_le),
(gst_byte_reader_get_uint24_be), (gst_byte_reader_get_int24_le),
(gst_byte_reader_get_int24_be), (gst_byte_reader_peek_uint24_le),
(gst_byte_reader_peek_uint24_be), (gst_byte_reader_peek_int24_le),
(gst_byte_reader_peek_int24_be):
Use new GST_READ_UINT24_(LE|BE) macros.
 2008-10-07 12:26:40 +00:00
Sebastian Dröge
b377c58e43 Add bit reader and byte reader classes, including documentation and an extensive unit test suite. Fixes bug #553554. 
Original commit message from CVS:
* docs/libs/gstreamer-libs-docs.sgml:
* docs/libs/gstreamer-libs-sections.txt:
* libs/gst/base/Makefile.am:
* libs/gst/base/gstbitreader.c: (gst_bit_reader_new),
(gst_bit_reader_new_from_buffer), (gst_bit_reader_free),
(gst_bit_reader_init), (gst_bit_reader_init_from_buffer),
(gst_bit_reader_set_pos), (gst_bit_reader_get_pos),
(gst_bit_reader_get_remaining), (gst_bit_reader_skip),
(gst_bit_reader_skip_to_byte):
* libs/gst/base/gstbitreader.h:
* libs/gst/base/gstbytereader.c: (GDOUBLE_SWAP_LE_BE),
(GFLOAT_SWAP_LE_BE), (gst_byte_reader_new),
(gst_byte_reader_new_from_buffer), (gst_byte_reader_free),
(gst_byte_reader_init), (gst_byte_reader_init_from_buffer),
(gst_byte_reader_set_pos), (gst_byte_reader_get_pos),
(gst_byte_reader_get_remaining), (gst_byte_reader_skip),
(gst_byte_reader_get_uint8), (gst_byte_reader_get_int8),
(gst_byte_reader_peek_uint8), (gst_byte_reader_peek_int8),
(gst_byte_reader_get_uint24_le), (gst_byte_reader_get_uint24_be),
(gst_byte_reader_get_int24_le), (gst_byte_reader_get_int24_be),
(gst_byte_reader_peek_uint24_le), (gst_byte_reader_peek_uint24_be),
(gst_byte_reader_peek_int24_le), (gst_byte_reader_peek_int24_be):
* libs/gst/base/gstbytereader.h:
* tests/check/Makefile.am:
* tests/check/libs/bitreader.c: (GST_START_TEST),
(gst_bit_reader_suite):
* tests/check/libs/bytereader.c: (GST_START_TEST),
(gst_byte_reader_suite):
Add bit reader and byte reader classes, including documentation
and an extensive unit test suite. Fixes bug #553554.
 2008-10-06 12:41:53 +00:00