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gstreamer/tests/check/libs/bitreader.c
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

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/* GStreamer
*
* unit test for GstBitReader
*
* Copyright (C) <2008> Sebastian Dröge <sebastian.droege@collabora.co.uk>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <gst/check/gstcheck.h>
#include <gst/base/gstbitreader.h>
#ifndef fail_unless_equals_int64
#define fail_unless_equals_int64(a, b) \
G_STMT_START { \
gint64 first = a; \
gint64 second = b; \
fail_unless(first == second, \
"'" #a "' (%" G_GINT64_FORMAT ") is not equal to '" #b"' (%" \
G_GINT64_FORMAT ")", first, second); \
} G_STMT_END;
#endif
GST_START_TEST (test_initialization)
{
guint8 data[] = { 0x01, 0x02, 0x03, 0x04 };
GstBuffer *buffer = gst_buffer_new ();
GstBitReader reader = GST_BIT_READER_INIT (data, 4);
GstBitReader *reader2;
guint8 x;
GST_BUFFER_DATA (buffer) = data;
GST_BUFFER_SIZE (buffer) = 4;
fail_unless (gst_bit_reader_get_bits_uint8 (&reader, &x, 8));
fail_unless_equals_int (x, 0x01);
fail_unless (gst_bit_reader_get_bits_uint8 (&reader, &x, 8));
fail_unless_equals_int (x, 0x02);
memset (&reader, 0, sizeof (GstBitReader));
gst_bit_reader_init (&reader, data, 4);
fail_unless (gst_bit_reader_get_bits_uint8 (&reader, &x, 8));
fail_unless_equals_int (x, 0x01);
fail_unless (gst_bit_reader_get_bits_uint8 (&reader, &x, 8));
fail_unless_equals_int (x, 0x02);
gst_bit_reader_init_from_buffer (&reader, buffer);
fail_unless (gst_bit_reader_get_bits_uint8 (&reader, &x, 8));
fail_unless_equals_int (x, 0x01);
fail_unless (gst_bit_reader_get_bits_uint8 (&reader, &x, 8));
fail_unless_equals_int (x, 0x02);
reader2 = gst_bit_reader_new (data, 4);
fail_unless (gst_bit_reader_get_bits_uint8 (reader2, &x, 8));
fail_unless_equals_int (x, 0x01);
fail_unless (gst_bit_reader_get_bits_uint8 (reader2, &x, 8));
fail_unless_equals_int (x, 0x02);
gst_bit_reader_free (reader2);
reader2 = gst_bit_reader_new_from_buffer (buffer);
fail_unless (gst_bit_reader_get_bits_uint8 (reader2, &x, 8));
fail_unless_equals_int (x, 0x01);
fail_unless (gst_bit_reader_get_bits_uint8 (reader2, &x, 8));
fail_unless_equals_int (x, 0x02);
gst_bit_reader_free (reader2);
gst_buffer_unref (buffer);
}
GST_END_TEST;
#define GET_CHECK(reader, dest, bits, nbits, val) { \
fail_unless (gst_bit_reader_get_bits_uint##bits (reader, &dest, nbits)); \
fail_unless_equals_uint64 (dest, val); \
}
#define PEEK_CHECK(reader, dest, bits, nbits, val) { \
fail_unless (gst_bit_reader_peek_bits_uint##bits (reader, &dest, nbits)); \
fail_unless_equals_uint64 (dest, val); \
}
#define GET_CHECK_FAIL(reader, dest, bits, nbits) { \
fail_if (gst_bit_reader_get_bits_uint##bits (reader, &dest, nbits)); \
}
#define PEEK_CHECK_FAIL(reader, dest, bits, nbits) { \
fail_if (gst_bit_reader_peek_bits_uint##bits (reader, &dest, nbits)); \
}
GST_START_TEST (test_get_bits)
{
guint8 data[] = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xab, 0xcd, 0xef,
0xfe, 0xdc, 0xba, 0x09, 0x87, 0x65, 0x43, 0x21
};
GstBitReader reader = GST_BIT_READER_INIT (data, 16);
guint8 a;
guint16 b;
guint32 c;
guint64 d;
/* 8 bit */
GET_CHECK (&reader, a, 8, 8, 0x12);
GET_CHECK (&reader, a, 8, 4, 0x03);
GET_CHECK (&reader, a, 8, 4, 0x04);
GET_CHECK (&reader, a, 8, 3, 0x02);
GET_CHECK (&reader, a, 8, 1, 0x01);
GET_CHECK (&reader, a, 8, 2, 0x01);
GET_CHECK (&reader, a, 8, 2, 0x02);
PEEK_CHECK (&reader, a, 8, 8, 0x78);
PEEK_CHECK (&reader, a, 8, 8, 0x78);
fail_unless (gst_bit_reader_skip (&reader, 8));
PEEK_CHECK (&reader, a, 8, 8, 0x90);
GET_CHECK (&reader, a, 8, 1, 0x01);
GET_CHECK (&reader, a, 8, 1, 0x00);
GET_CHECK (&reader, a, 8, 1, 0x00);
GET_CHECK (&reader, a, 8, 1, 0x01);
fail_unless (gst_bit_reader_skip (&reader, 4));
fail_unless (gst_bit_reader_skip (&reader, 10 * 8));
GET_CHECK (&reader, a, 8, 8, 0x21);
GET_CHECK_FAIL (&reader, a, 8, 1);
PEEK_CHECK_FAIL (&reader, a, 8, 1);
/* 16 bit */
gst_bit_reader_init (&reader, data, 16);
GET_CHECK (&reader, b, 16, 16, 0x1234);
PEEK_CHECK (&reader, b, 16, 13, 0x0acf);
GET_CHECK (&reader, b, 16, 8, 0x56);
GET_CHECK (&reader, b, 16, 4, 0x07);
GET_CHECK (&reader, b, 16, 2, 0x02);
GET_CHECK (&reader, b, 16, 2, 0x00);
PEEK_CHECK (&reader, b, 16, 8, 0x90);
fail_unless (gst_bit_reader_skip (&reader, 11 * 8));
GET_CHECK (&reader, b, 16, 8, 0x21);
GET_CHECK_FAIL (&reader, b, 16, 16);
PEEK_CHECK_FAIL (&reader, b, 16, 16);
/* 32 bit */
gst_bit_reader_init (&reader, data, 16);
GET_CHECK (&reader, c, 32, 32, 0x12345678);
GET_CHECK (&reader, c, 32, 24, 0x90abcd);
GET_CHECK (&reader, c, 32, 16, 0xeffe);
GET_CHECK (&reader, c, 32, 8, 0xdc);
GET_CHECK (&reader, c, 32, 4, 0x0b);
GET_CHECK (&reader, c, 32, 2, 0x02);
GET_CHECK (&reader, c, 32, 2, 0x02);
PEEK_CHECK (&reader, c, 32, 8, 0x09);
fail_unless (gst_bit_reader_skip (&reader, 3 * 8));
GET_CHECK (&reader, c, 32, 15, 0x2190);
GET_CHECK (&reader, c, 32, 1, 0x1);
GET_CHECK_FAIL (&reader, c, 32, 1);
/* 64 bit */
gst_bit_reader_init (&reader, data, 16);
GET_CHECK (&reader, d, 64, 64, G_GINT64_CONSTANT (0x1234567890abcdef));
GET_CHECK (&reader, d, 64, 7, 0xfe >> 1);
GET_CHECK (&reader, d, 64, 1, 0x00);
GET_CHECK (&reader, d, 64, 24, 0xdcba09);
GET_CHECK (&reader, d, 64, 32, 0x87654321);
GET_CHECK_FAIL (&reader, d, 64, 32);
}
GST_END_TEST;
#undef GET_CHECK
#undef PEEK_CHECK
#undef GET_CHECK_FAIL
#undef PEEK_CHECK_FAIL
GST_START_TEST (test_position_tracking)
{
guint8 data[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
};
GstBitReader reader = GST_BIT_READER_INIT (data, 16);
guint8 a;
fail_unless_equals_int (gst_bit_reader_get_pos (&reader), 0);
fail_unless_equals_int (gst_bit_reader_get_remaining (&reader), 16 * 8);
fail_unless (gst_bit_reader_get_bits_uint8 (&reader, &a, 3));
fail_unless_equals_int (gst_bit_reader_get_pos (&reader), 3);
fail_unless_equals_int (gst_bit_reader_get_remaining (&reader), 16 * 8 - 3);
fail_unless (gst_bit_reader_set_pos (&reader, 9));
fail_unless_equals_int (gst_bit_reader_get_pos (&reader), 9);
fail_unless_equals_int (gst_bit_reader_get_remaining (&reader), 16 * 8 - 9);
fail_unless (gst_bit_reader_skip (&reader, 3));
fail_unless_equals_int (gst_bit_reader_get_pos (&reader), 12);
fail_unless_equals_int (gst_bit_reader_get_remaining (&reader), 16 * 8 - 12);
fail_unless (gst_bit_reader_skip_to_byte (&reader));
fail_unless_equals_int (gst_bit_reader_get_pos (&reader), 16);
fail_unless_equals_int (gst_bit_reader_get_remaining (&reader), 16 * 8 - 16);
fail_unless (gst_bit_reader_set_pos (&reader, 16 * 8));
fail_unless_equals_int (gst_bit_reader_get_pos (&reader), 16 * 8);
fail_unless_equals_int (gst_bit_reader_get_remaining (&reader), 0);
fail_unless (gst_bit_reader_skip (&reader, 0));
fail_if (gst_bit_reader_skip (&reader, 1));
fail_unless (gst_bit_reader_skip_to_byte (&reader));
}
GST_END_TEST;
static Suite *
gst_bit_reader_suite (void)
{
Suite *s = suite_create ("GstBitReader");
TCase *tc_chain = tcase_create ("general");
suite_add_tcase (s, tc_chain);
tcase_add_test (tc_chain, test_initialization);
tcase_add_test (tc_chain, test_get_bits);
tcase_add_test (tc_chain, test_position_tracking);
return s;
}
GST_CHECK_MAIN (gst_bit_reader);
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