Altera Video and Image Processing Suite Bedienungsanleitung Seite 275
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Class Description
class c_av_st_video_file_io
Parameterized class.
Extends c_av_video_item. Comprises of width, height, and
interlaced bits (the fields found in an Avalon-ST video control
packet). It also contains data types and methods that control the
addition of garbage beats that are used by other classes. The class
provides methods to get and set the individual fields.
class c_av_st_user_packet This parameterized class is defined in a separate file (av_st_video_
file_io_class.sv) because some test environments do not use video
data from a file, using constrained random data generated by the
other classes instead.
This class provides the following methods:
• to read and write video files (in .raw format)
• to send or receive videos and control packet objects to or from
the mailbox.
Variables that govern the file I/O details include the ability to
artificially lengthen and shorten video packets and to introduce
garbage beats into control packets by various get and set method
calls.
Typical usage of the file I/O class is to construct two objects—a
reader and a writer, call the open file methods for both, call the
read_file method for the reader, and repeatedly call the wait_
for_and_write_video_packet_to_file method in the writer.
The parameters for this class are BITS_PER_CHANNEL and
CHANNELS_PER_PIXEL.
Running the Tests
This example system is available in the Quartus II install directory.
• For example video files test:
$(QUARTUS_ROOTDIR)/../ip/altera/vip/verification/example_video_files
• For constrained random test:
$(QUARTUS_ROOTDIR)/../ip/altera/vip/verification/
example_constrained_random
Note:
The actual commands used in this section are for a Linux example. However, the same flow applies
for Windows users.
1. Automatically generate the tb.v netlist from the Qsys system integration tool in the Quartus II
software.
UG-VIPSUITE
2015.05.04
Running the Tests
A-7
Avalon-ST Video Verification IP Suite
Altera Corporation
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- 101 Innovation Drive 1
- San Jose, CA 95134 1
- Contents 2
- Feature Support 7
- Release Information 9
- Device Family Support 10
- IP Core Mode Latency 11
- Interfaces 28
- Video Formats 29
- D0 D1vid_data 32
- Signal Name Description 33
- Avalon-ST Video Protocol 34
- Video Data Packets 38
- Symbol transmitted first 39
- Symbol transmitted last 39
- Plane for even rows 40
- Plane for odd rows 40
- Control Data Packets 42
- Parameters 43
- Description 43
- Type Width Height Interlacin 43
- Order Symbol Order Symbol 45
- Ancillary Data Packets 46
- Packet Propagation 46
- Parameter Name Value 47
- Signal Width Direction 47
- Packet Transfer Examples 48
- Parameter Value 50
- Avalon-MM Slave Interfaces 52
- Avalon-MM Master Interfaces 55
- Related Information 56
- Getting Started 57
- OpenCore Plus IP Evaluation 59
- Control Port 60
- Format Description 61
- Interrupts 64
- Generator Lock 68
- Underflow and Overflow 70
- Timing Constraints 71
- Handling Ancillary Packets 71
- Modules Description 75
- Address Register Description 100
- UG-VIPSUITE 105
- 2015.05.04 105
- 2D FIR Filter IP Core 106
- Coefficient Precision 107
- Parameter Value Description 108
- 2D FIR Filter Signals 109
- Signal Direction Description 110
- Video Mixing IP Cores 112
- Alpha Blending 113
- Video Mixing Signals 116
- 20 Input 3 enable 121
- Chroma Resampler IP Core 122
- 4:4:4 to 4:2:2 123
- 4:2:2 to 4:4:4 123
- Vertical Resampling (4:2:0) 124
- Chroma Resampler Signals 126
- Video Clipping IP Cores 127
- Video Clipping Signals 130
- Color Plane Sequencer IP Core 135
- Rearranging Color Patterns 136
- Splitting and Duplicating 137
- Subsampled Data 138
- Color Plane Sequencer Signals 139
- IP Cores Feature 141
- Input and Output Data Types 142
- Color Space Conversion 142
- Operands 145
- Control Synchronizer IP Core 153
- Control Synchronizer Signals 157
- Deinterlacing IP Cores 160
- Deinterlacing Methods 161
- Bob with Scanline Duplication 162
- Motion-Adaptive 162
- Sobel-Based HQ Mode 164
- Frame Buffering 165
- Types Description 166
- Frame Rate Conversion 167
- Altera Corporation 168
- Send Feedback 168
- Deinterlacing Signals 176
- Register Address 190
- (Decimal) 190
- Register Suggested 190
- Settings 190
- Comments 190
- Tuning Motion Shift 191
- Frame Reader IP Core 192
- Frame Reader Signals 194
- Frame Buffer IP Cores 198
- Double Buffering 199
- Triple Buffering 199
- Locked Frame Rate Conversion 200
- Color Format 201
- Frame Buffer Signals 206
- Gamma Corrector IP Core 214
- Gamma Corrector Signals 215
- Interlacer IP Core 218
- Interlacer Parameter Settings 219
- Interlacer Signals 219
- Interlacer Control Registers 221
- Scaler II IP Core 222
- Bilinear Algorithm 223
- Double-Buffering 226
- Scaler II Parameter Settings 230
- Scaler II Signals 233
- Scaler II Control Registers 235
- Video Switching IP Cores 237
- Mixer Layer Switching 238
- Video Switching Signals 239
- Test Pattern 243
- Trace System IP Core 253
- Trace System Signals 255
- Trace Within System Console 258
- TCL Shell Commands 259
- Command Arguments Function 260
- Packet Visualization 263
- Monitor Settings 264
- Subscribe 269
- Avalon-ST Video Class Library 270
- Class Description 272
- Running the Tests 275
- Video File Reader Test 278
- Example Test Environment 281
- Video Field Life Cycle 282
- Constrained Random Test 283
- Code for Scoreboards 285
- Code for to_grey Function 286
- Complete Class Reference 287
- Method Call Description 288
- Member Description 288
- Raw Video Data Format 299
- Y 410 / A 2R 10 G 10 B 10 301
- Additional Information 306
- Date Version Changes 307
- How to Contact Altera 310
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