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# -*- Mode: Python -*-
# vi:si:et:sw=4:sts=4:ts=4
#
# gst-python - Python bindings for GStreamer
# Copyright (C) 2002 David I. Lehn
# Copyright (C) 2004 Johan Dahlin
# Copyright (C) 2005 Edward Hervey
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA
import sys
import gc
from common import gobject, gst, unittest, TestCase
class BufferTest(TestCase):
def testBufferBuffer(self):
buf = gst.Buffer('test')
assert str(buffer(buf)) == 'test'
def testBufferStr(self):
buffer = gst.Buffer('test')
assert str(buffer) == 'test'
def testBufferAlloc(self):
bla = 'mooooooo'
buffer = gst.Buffer(bla + '12345')
gc.collect ()
assert str(buffer) == 'mooooooo12345'
def testBufferBadConstructor(self):
self.assertRaises(TypeError, gst.Buffer, 'test', 0)
def testBufferStrNull(self):
test_string = 't\0e\0s\0t\0'
buffer = gst.Buffer(test_string)
assert str(buffer) == test_string
def testBufferSize(self):
test_string = 'a little string'
buffer = gst.Buffer(test_string)
assert len(buffer) == len(test_string)
assert hasattr(buffer, 'size')
assert buffer.size == len(buffer)
def testBufferCreateSub(self):
s = ''
for i in range(64):
s += '%02d' % i
buffer = gst.Buffer(s)
self.assertEquals(len(buffer), 128)
sub = buffer.create_sub(16, 16)
self.assertEquals(sub.size, 16)
self.assertEquals(sub.data, buffer.data[16:32])
self.assertEquals(sub.offset, gst.CLOCK_TIME_NONE)
def testBufferMerge(self):
buffer1 = gst.Buffer('foo')
buffer2 = gst.Buffer('bar')
merged_buffer = buffer1.merge(buffer2)
assert str(merged_buffer) == 'foobar'
def testBufferJoin(self):
buffer1 = gst.Buffer('foo')
buffer2 = gst.Buffer('bar')
joined_buffer = buffer1.merge(buffer2)
assert str(joined_buffer) == 'foobar'
def testBufferSpan(self):
buffer1 = gst.Buffer('foo')
buffer2 = gst.Buffer('bar')
spaned_buffer = buffer1.span(0L, buffer2, 6L)
assert str(spaned_buffer) == 'foobar'
def testBufferCopyOnWrite(self):
s='test_vector'
buffer = gst.Buffer(s)
sub = buffer.create_sub(0, buffer.size)
self.assertEquals(sub.size, buffer.size)
out = sub.copy_on_write ()
self.assertEquals(out.size, sub.size)
assert str(out) == str(buffer)
out[5] = 'w'
assert str(out) == 'test_wector'
def testBufferFlagIsSet(self):
buffer = gst.Buffer()
# Off by default
assert not buffer.flag_is_set(gst.BUFFER_FLAG_READONLY)
# Try switching on and off
buffer.flag_set(gst.BUFFER_FLAG_READONLY)
assert buffer.flag_is_set(gst.BUFFER_FLAG_READONLY)
buffer.flag_unset(gst.BUFFER_FLAG_READONLY)
assert not buffer.flag_is_set(gst.BUFFER_FLAG_READONLY)
# Try switching on and off
buffer.flag_set(gst.BUFFER_FLAG_IN_CAPS)
assert buffer.flag_is_set(gst.BUFFER_FLAG_IN_CAPS)
buffer.flag_unset(gst.BUFFER_FLAG_IN_CAPS)
assert not buffer.flag_is_set(gst.BUFFER_FLAG_IN_CAPS)
def testAttrFlags(self):
buffer = gst.Buffer()
assert hasattr(buffer, "flags")
assert isinstance(buffer.flags, int)
def testAttrTimestamp(self):
buffer = gst.Buffer()
assert hasattr(buffer, "timestamp")
assert isinstance(buffer.timestamp, long)
assert buffer.timestamp == gst.CLOCK_TIME_NONE
buffer.timestamp = 0
assert buffer.timestamp == 0
buffer.timestamp = 2**64 - 1
assert buffer.timestamp == 2**64 - 1
def testAttrDuration(self):
buffer = gst.Buffer()
assert hasattr(buffer, "duration")
assert isinstance(buffer.duration, long)
assert buffer.duration == gst.CLOCK_TIME_NONE
buffer.duration = 0
assert buffer.duration == 0
buffer.duration = 2**64 - 1
assert buffer.duration == 2**64 - 1
def testAttrOffset(self):
buffer = gst.Buffer()
assert hasattr(buffer, "offset")
assert isinstance(buffer.offset, long)
assert buffer.offset == gst.CLOCK_TIME_NONE
buffer.offset = 0
assert buffer.offset == 0
buffer.offset = 2**64 - 1
assert buffer.offset == 2**64 - 1
def testAttrOffset_end(self):
buffer = gst.Buffer()
assert hasattr(buffer, "offset_end")
assert isinstance(buffer.offset_end, long)
assert buffer.offset_end == gst.CLOCK_TIME_NONE
buffer.offset_end = 0
assert buffer.offset_end == 0
buffer.offset_end = 2**64 - 1
assert buffer.offset_end == 2**64 - 1
def testBufferCaps(self):
buffer = gst.Buffer()
caps = gst.caps_from_string('foo/blah')
gst.info("before settings caps")
buffer.set_caps(caps)
gst.info("after settings caps")
c = buffer.get_caps()
gst.info("after getting caps")
self.assertEquals(caps, c)
if __name__ == "__main__":
unittest.main()
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