Texas Instruments SPRAA56 Manual do Utilizador

Application Report SPRAA56 – September 2004 1 DSP/BIOS Real-Time Analysis (RTA) and Debugging Applied to a Video Application Brian Jeff DSP Field Sof

SPRAA56 10 DSP/BIOS Real-Time Analysis (RTA) and Debugging Applied to a Video Application This call returns a status structure of type IH263ENC_Statu

SPRAA56 DSP/BIOS Real-Time Analysis (RTA) and Debugging Applied to a Video Application 11 4 RTA Techniques for Performance Measurement The RTA techn

SPRAA56 12 DSP/BIOS Real-Time Analysis (RTA) and Debugging Applied to a Video Application 4.2 Measuring Task Scheduling Latencies Scheduling latency

SPRAA56 DSP/BIOS Real-Time Analysis (RTA) and Debugging Applied to a Video Application 13 The low-resolution CLK_getltime API is used instead of the

SPRAA56 14 DSP/BIOS Real-Time Analysis (RTA) and Debugging Applied to a Video Application last30frame.current = CLK_getltime(); // check to see if w

SPRAA56 DSP/BIOS Real-Time Analysis (RTA) and Debugging Applied to a Video Application 15 Window = 500ms (default) t0 t1 t0 t1 ‘minloop’ (in units

SPRAA56 16 DSP/BIOS Real-Time Analysis (RTA) and Debugging Applied to a Video Application In video applications that handle the full resolution of 72

SPRAA56 DSP/BIOS Real-Time Analysis (RTA) and Debugging Applied to a Video Application 17 These estimates are fairly accurate for the color conversio

SPRAA56 18 DSP/BIOS Real-Time Analysis (RTA) and Debugging Applied to a Video Application Most current encoders use three primary frame types: Intrac

SPRAA56 DSP/BIOS Real-Time Analysis (RTA) and Debugging Applied to a Video Application 19 The benchmarking routines send out selected benchmark data

SPRAA56 2 DSP/BIOS Real-Time Analysis (RTA) and Debugging Applied to a Video Application Figures Figure 1. Basic Data Flow of the Video Application..

SPRAA56 20 DSP/BIOS Real-Time Analysis (RTA) and Debugging Applied to a Video Application The application supplied with this note references board su

SPRAA56 DSP/BIOS Real-Time Analysis (RTA) and Debugging Applied to a Video Application 21 – Statistics View. Shows the values for STS objects used b

SPRAA56 22 DSP/BIOS Real-Time Analysis (RTA) and Debugging Applied to a Video Application Figure 6. Workspace Including RTA Windows 5.3 Interpreti

SPRAA56 DSP/BIOS Real-Time Analysis (RTA) and Debugging Applied to a Video Application 23 Figure 7. Statistics View Showing Benchmark Measurements

SPRAA56 24 DSP/BIOS Real-Time Analysis (RTA) and Debugging Applied to a Video Application In the input and output tasks, Cell0 is the color conversio

SPRAA56 DSP/BIOS Real-Time Analysis (RTA) and Debugging Applied to a Video Application 25 5.3.2 Expected Values Delivered to the Message Log CPU loa

SPRAA56 26 DSP/BIOS Real-Time Analysis (RTA) and Debugging Applied to a Video Application The value of N, which is used by modes 2 and 3, is 30 frame

SPRAA56 DSP/BIOS Real-Time Analysis (RTA) and Debugging Applied to a Video Application 27 Appendix A. Performance Impact A.1 Overhead of Performance

SPRAA56 28 DSP/BIOS Real-Time Analysis (RTA) and Debugging Applied to a Video Application A.3 Memory Footprint The total additional code size added t

IMPORTANT NOTICETexas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications,enhancements, improvemen

SPRAA56 DSP/BIOS Real-Time Analysis (RTA) and Debugging Applied to a Video Application 3 Quantization is the process of dividing a continuous range o

SPRAA56 4 DSP/BIOS Real-Time Analysis (RTA) and Debugging Applied to a Video Application Figure 1 shows a simplified view of the sequential flow of

SPRAA56 DSP/BIOS Real-Time Analysis (RTA) and Debugging Applied to a Video Application 5 2.1 DSP/BIOS and RF5 Components Used The base application l

SPRAA56 6 DSP/BIOS Real-Time Analysis (RTA) and Debugging Applied to a Video Application 2.1.2 STS An STS object accumulates the following statistica

SPRAA56 DSP/BIOS Real-Time Analysis (RTA) and Debugging Applied to a Video Application 7 2.2 Requirements for Viewing RTA Benchmarks In order for an

SPRAA56 8 DSP/BIOS Real-Time Analysis (RTA) and Debugging Applied to a Video Application DeviceDriverBuffer3 framesDeviceDriverBuffer3 framesDeviceDr

SPRAA56 DSP/BIOS Real-Time Analysis (RTA) and Debugging Applied to a Video Application 9 if(controlVideoProc.frameRateChanged) { txMsg.cmd = FRA