1 /* 2 * v4l-test: Test environment for Video For Linux Two API 3 * 4 * 20 Apr 2009 0.5 Added string content validation 5 * 18 Apr 2009 0.4 More strict check for strings 6 * 29 Mar 2009 0.3 Clean up ret and errno variable names and dprintf() output 7 * 22 Dec 2008 0.2 Test case with NULL parameter added 8 * 18 Dec 2008 0.1 First release 9 * 10 * Written by Mrton Nmeth <nm127 (at) freemail.hu> 11 * Released under GPL 12 */ 13 14 #include <stdio.h> 15 #include <sys/types.h> 16 #include <sys/stat.h> 17 #include <fcntl.h> 18 #include <unistd.h> 19 #include <sys/ioctl.h> 20 #include <errno.h> 21 #include <string.h> 22 23 #include <linux/videodev2.h> 24 #include <linux/errno.h> 25 26 #include <CUnit/CUnit.h> 27 #include <CUnit/Basic.h> 28 29 #include "v4l2_test.h" 30 #include "dev_video.h" 31 #include "video_limits.h" 32 #include "v4l2_validator.h" 33 34 #include "test_VIDIOC_QUERYCAP.h" 35 36 int valid_capabilities(__u32 capabilities) 37 { 38 int valid = 1; 39 40 if ((capabilities & ~(V4L2_CAP_VIDEO_CAPTURE | 41 V4L2_CAP_VIDEO_OUTPUT | 42 V4L2_CAP_VIDEO_OVERLAY | 43 V4L2_CAP_VBI_CAPTURE | 44 V4L2_CAP_VBI_OUTPUT | 45 V4L2_CAP_SLICED_VBI_CAPTURE | 46 V4L2_CAP_SLICED_VBI_OUTPUT | 47 V4L2_CAP_RDS_CAPTURE | 48 V4L2_CAP_VIDEO_OUTPUT_OVERLAY | 49 V4L2_CAP_TUNER | 50 V4L2_CAP_AUDIO | 51 V4L2_CAP_RADIO | 52 V4L2_CAP_READWRITE | 53 V4L2_CAP_ASYNCIO | V4L2_CAP_STREAMING)) != 0) { 54 valid = 0; 55 } 56 57 return valid; 58 } 59 60 void test_VIDIOC_QUERYCAP() 61 { 62 int ret; 63 struct v4l2_capability cap; 64 struct v4l2_capability cap2; 65 66 memset(&cap, 0xff, sizeof(cap)); 67 68 ret = ioctl(get_video_fd(), VIDIOC_QUERYCAP, &cap); 69 70 dprintf("VIDIOC_QUERYCAP, ret=%i\n", ret); 71 dprintf("\tcap = { .driver = \"%s\", .card = \"%s\", " 72 ".bus_info = \"%s\", " 73 ".version = %u.%u.%u, " 74 ".capabilities = 0x%X, " 75 ".reserved[]={ 0x%X, 0x%X, 0x%X, 0x%X } }\n", 76 cap.driver, 77 cap.card, 78 cap.bus_info, 79 (cap.version >> 16) & 0xFF, 80 (cap.version >> 8) & 0xFF, 81 cap.version & 0xFF, 82 cap.capabilities, 83 cap.reserved[0], 84 cap.reserved[1], cap.reserved[2], cap.reserved[3] 85 ); 86 87 /* This ioctl must be implemented by ALL drivers */ 88 CU_ASSERT_EQUAL(ret, 0); 89 if (ret == 0) { 90 CU_ASSERT(0 < strlen((char *)cap.driver)); 91 CU_ASSERT(valid_string((char *)cap.driver, sizeof(cap.driver))); 92 93 CU_ASSERT(0 < strlen((char *)cap.card)); 94 CU_ASSERT(valid_string((char *)cap.card, sizeof(cap.card))); 95 96 /* cap.bus_info is allowed to be an empty string ("") if no 97 * is info available 98 */ 99 CU_ASSERT(valid_string 100 ((char *)cap.bus_info, sizeof(cap.bus_info))); 101 102 //CU_ASSERT_EQUAL(cap.version, ?); 103 CU_ASSERT(valid_capabilities(cap.capabilities)); 104 105 CU_ASSERT_EQUAL(cap.reserved[0], 0); 106 CU_ASSERT_EQUAL(cap.reserved[1], 0); 107 CU_ASSERT_EQUAL(cap.reserved[2], 0); 108 CU_ASSERT_EQUAL(cap.reserved[3], 0); 109 110 /* Check if the unused bytes of the driver, card and bus_info 111 * strings are also filled with zeros. Also check if there is 112 * any padding byte between any two fields then this padding 113 * byte is also filled with zeros. 114 */ 115 memset(&cap2, 0, sizeof(cap2)); 116 strncpy((char *)cap2.driver, (char *)cap.driver, 117 sizeof(cap2.driver)); 118 strncpy((char *)cap2.card, (char *)cap.card, sizeof(cap2.card)); 119 strncpy((char *)cap2.bus_info, (char *)cap.bus_info, 120 sizeof(cap2.bus_info)); 121 cap2.version = cap.version; 122 cap2.capabilities = cap.capabilities; 123 CU_ASSERT_EQUAL(memcmp(&cap, &cap2, sizeof(cap)), 0); 124 125 } 126 127 } 128 129 void test_VIDIOC_QUERYCAP_NULL() 130 { 131 int ret_null, errno_null; 132 133 ret_null = ioctl(get_video_fd(), VIDIOC_QUERYCAP, NULL); 134 errno_null = errno; 135 136 dprintf("\t%s:%u: VIDIOC_QUERYCAP, ret_null=%i, errno_null=%i\n", 137 __FILE__, __LINE__, ret_null, errno_null); 138 139 /* VIDIOC_QUERYCAP is a mandatory command, all drivers shall 140 * support it. The parameter shall be always tested. 141 */ 142 CU_ASSERT_EQUAL(ret_null, -1); 143 CU_ASSERT_EQUAL(errno_null, EFAULT); 144 145 } 146
