AP77016-B17 [ETC]
USAP77016-B17 User＇s Manual | User＇s Manual[01/2003] ; USAP77016 - B17用户手册|用户手册[ 01/2003 ]\n
| 型号： | AP77016-B17 |
| 厂家： | 
ETC |
| 描述： | USAP77016-B17 User＇s Manual | User＇s Manual[01/2003]
|
| 文件： | 总42页 (文件大小：162K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
User’s Manual
µSAP77016-B17
AAC Audio Encoder Middleware
Target Device
µPD77110
µPD77113A
µPD77114
µPD77115
µPD77210
µPD77213
Document No. U16314EJ1V0UM00 (1st edition)
Date Published January 2003 NS CP(N)
2003
Printed in Japan
[MEMO]
2
User’s Manual U16314EJ1V0UM
Windows is either a registered trademark or a trademark of Microsoft Corporation in the United States
and/or other countries.
•
The information in this document is current as of January, 2003. The information is subject to
change without notice. For actual design-in, refer to the latest publications of NEC Electronics data
sheets or data books, etc., for the most up-to-date specifications of NEC Electronics products. Not
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representative for availability and additional information.
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or any other liability arising from the use of such products. No license, express, implied or otherwise, is
granted under any patents, copyrights or other intellectual property rights of NEC Electronics or others.
Descriptions of circuits, software and other related information in this document are provided for illustrative
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(Note)
(1)
"NEC Electronics" as used in this statement means NEC Electronics Corporation and also includes its
majority-owned subsidiaries.
(2)
"NEC Electronics products" means any product developed or manufactured by or for NEC Electronics (as
defined above).
M8E 02. 11-1
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User’s Manual U16314EJ1V0UM
Regional Information
Some information contained in this document may vary from country to country. Before using any NEC
Electronics product in your application, pIease contact the NEC Electronics office in your country to
obtain a list of authorized representatives and distributors. They will verify:
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•
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Device availability
Ordering information
Product release schedule
Availability of related technical literature
Development environment specifications (for example, specifications for third-party tools and
components, host computers, power plugs, AC supply voltages, and so forth)
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Network requirements
In addition, trademarks, registered trademarks, export restrictions, and other legal issues may also vary
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NEC Electronics America, Inc. (U.S.)
Santa Clara, California
Tel: 408-588-6000
NEC Electronics Hong Kong Ltd.
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• Filiale Italiana
Milano, Italy
Tel: 02-66 75 41
Fax: 02-66 75 42 99
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Seoul, Korea
Tel: 02-528-0303
Fax: 02-528-4411
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Novena Square, Singapore
Tel: 6253-8311
Fax: 6250-3583
J02.11
4
User’s Manual U16314EJ1V0UM
PREFACE
Target Readers
This manual is for users who design and develop µPD77016 Family application systems.
µPD77016 Family is the generic name for the µPD7701x family (µPD77015, 77016,
77017, 77018, 77018A, 77019), the µPD77111 Family (µPD77110, 77111, 77112,
77113A, 77114, 77115) and the µPD77210 Family (µPD77210, 77213). However, this
manual is for µPD77110, 77113A, 77114, 77115, 77210, and 77213 devices.
Purpose
The purpose of this manual is to help users understand the supporting middleware when
designing and developing µPD77016 Family application systems.
Organization
This manual consists of the following contents.
• OVERVIEW
• LIBRARY SPECIFICATIONS
• INSTALLATION
• SYSTEM EXAMPLES
• SAMPLE PROGRAM SOURCE
How to Read This Manual It is assumed that the reader of this manual has general knowledge in the fields of
electrical engineering, logic circuits, microcontrollers, and the C language.
To learn about µPD77111 Family hardware functions
→ Refer to µPD77111 Family User’s Manual Architecture.
To learn about µPD77210 Family hardware functions
→ Refer to µPD77210 Family User’s Manual Architecture.
To learn about µPD77016 Family hardware functions
→ Refer to µPD77016 Family User’s Manual Instruction.
Conventions
Data significance:
Higher digits on the left and lower digits on the right
Active low representation: XXX (overscore over pin or signal name)
Note:
Footnote for item marked with Note in the text
Information requiring particular attention
Supplementary information
Caution:
Remark:
Numerical representation: Binary ... XXXX or 0bXXXX
Decimal ... XXXX
Hexadecimal ... 0xXXXX
5
User’s Manual U16314EJ1V0UM
Related Documents
The related documents listed below may include preliminary versions. However,
preliminary versions are not marked as such.
Documents Related to Devices
Part Number
Pamphlet
Data Sheet
U12801E
User’s Manual
Application Note
Basic Software
U11958E
Architecture
U14623E
Instructions
U13116E
µ PD77110
U12395E
µ PD77111
µ PD77112
µ PD77113A
µ PD77114
µ PD77115
µ PD77210
µ PD77213
U14373E
U14867E
U15203E
U15807E
Documents Related to Development Tools
Document Name
Document No.
U14397E
RX77016 User’s Manual
Function
Configuration Tool
HOST API
U14404E
RX77016 Application Note
U14371E
Documents Related to Middleware
Document Name
Document No.
U15152E
µ SAP77106-B08 User's Manual (AAC Decoder)
µ SAP77106-B17 User's Manual (AAC Encoder)
This manual
Documents Related to Standard
Document Name
ISO/IEC 13818-7 MPEG-2 Advanced Audio Coding, AAC
Date Published
April, 1997
Caution The related documents listed above are subject to change without notice. Be sure to use the latest
version of each document for designing.
6
User’s Manual U16314EJ1V0UM
CONTENTS
CHAPTER 1 OVERVIEW ...........................................................................................................................9
1.1 Middleware......................................................................................................................................................9
1.2 AAC Audio Encoder.......................................................................................................................................9
1.2.1 Encoder outline.................................................................................................................................10
1.3 Compressed Data Format ...........................................................................................................................12
1.3.1 ADIF format outline ...........................................................................................................................12
1.3.2 ADTS format outline..........................................................................................................................12
1.4 Product Overview.........................................................................................................................................13
1.4.1 Features............................................................................................................................................13
1.4.2 Function ............................................................................................................................................13
1.4.3 Operating environment......................................................................................................................13
1.4.4 Performance......................................................................................................................................15
1.4.5 Directory configuration......................................................................................................................16
CHAPTER 2 LIBRARY SPECIFICATIONS ............................................................................................17
2.1 Library Overview..........................................................................................................................................17
2.2 Application Processing Flow......................................................................................................................18
2.3 Function Specifications ..............................................................................................................................19
2.3.1 AACENC_Start function....................................................................................................................19
2.3.2 AACENC_Encode function................................................................................................................20
2.3.3 AACENC_GetVersion function..........................................................................................................21
2.4 Parameters Necessary for Compression...................................................................................................22
2.5 Memory Structure ........................................................................................................................................24
2.5.1 Scratch area......................................................................................................................................24
2.5.2 Static area.........................................................................................................................................24
2.5.3 I/O buffers .........................................................................................................................................25
CHAPTER 3 INSTALLATION ..................................................................................................................26
3.1 Installation Procedure .................................................................................................................................26
3.2 Sample Program Creation Procedure ........................................................................................................27
3.3 Symbol Naming Conventions .....................................................................................................................28
CHAPTER 4 SYSTEM EXAMPLE..........................................................................................................29
4.1 Simulation Environment Using Timing File...............................................................................................29
4.2 Operation......................................................................................................................................................29
APPENDIX SAMPLE PROGRAM SOURCE..........................................................................................30
A.1 Header File (aacenc.h) ................................................................................................................................30
A.2 Include File for Sample Program (sample.inc) .........................................................................................31
A.3 Sample Source File (sample.asm) .............................................................................................................33
A.4 Timing File for Parameter Information (value.tmg) ..................................................................................38
A.5 Timing File for Data Input (pcm_in.tmg)....................................................................................................39
A.6 Timing File for Data Output (stream_out.tmg)..........................................................................................41
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User’s Manual U16314EJ1V0UM
LIST OF FIGURES
Figure No.
Title
Page
1-1. Encoder Configuration Example..........................................................................................................................10
1-2. System Configuration Example............................................................................................................................10
1-3. Timing Diagram....................................................................................................................................................11
1-4. ADIF Format .......................................................................................................................................................12
1-5. ADTS Format......................................................................................................................................................12
2-1. Application Processing Flow...............................................................................................................................18
2-2. Structure Consisting of Parameters Necessary for Compression........................................................................22
2-3. User-Defined Input Buffer (PCM Buffer) ..............................................................................................................25
2-4. User-Defined Output Buffer (Bit Stream Buffer)...................................................................................................25
LIST OF TABLES
Table No.
Title
Page
1-1. Sampling Frequencies ...........................................................................................................................................9
1-2. Maximum Bit Rates..............................................................................................................................................11
1-3. Required Memory Sizes ......................................................................................................................................13
1-4. Software Tools .....................................................................................................................................................14
1-5. MIPS Values of 1-Frame Compression Processing (Measured Values)..............................................................15
2-1. List of Library Functions ......................................................................................................................................17
2-2. Sampling Frequencies .........................................................................................................................................23
2-3. Symbol Name/Memory Sizes...............................................................................................................................24
3-1. Symbol Naming Conventions...............................................................................................................................28
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User’s Manual U16314EJ1V0UM
CHAPTER 1 OVERVIEW
1.1 Middleware
Middleware is the name given to a group of software that has been tuned so that it draws out the maximum
performance of the processor and enables processing that is conventionally performed by hardware to be performed
by software.
The concept of middleware was introduced with the development of a new high-speed processor, the DSP, in order
to facilitate operation of the environments integrated in the system.
By providing appropriate speech codec and image data compression/decompression-type middleware, NEC
Electronics is offering users the kind of technology essential in the realization of a multimedia system for the
µPD77016 Family, and is continuing its promotion of system development.
µSAP77016-B17 is middleware that provides AAC-technology encoding functions.
1.2 AAC Audio Encoder
AAC stands for Advanced Audio Coding.
MPEG-2 AAC is an audio coding method that achieves a high quality and a high compression rate by removing
compatibility with MPEG-1 audio. The µSAP77016-B17 conforms to this coding method.
The compressed data format conforms to “ISO/IEC 13818-7 MPEG-2 Advanced Audio Coding, AAC”. The audio
data that is handled is 16-bit linear PCM data sampled at a frequency of 8 kHz to 96 kHz (refer to Table 1-1).
Table 1-1. Sampling Frequencies
Frequency [Hz]
8000
11025
12000
16000
22050
24000
32000
44100
48000
64000
88200
96000
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User’s Manual U16314EJ1V0UM
CHAPTER 1 OVERVIEW
1.2.1 Encoder outline
Figure 1-1 shows an example of the configuration of an encoder using the µSAP77016-B17. Figure 1-2 shows an
example of the configuration of a system that includes an encoder using the µSAP77016-B17.
Figure 1-1. Encoder Configuration Example
Sampling frequency
8 kHz to 96 kHz
Variable bit
rate
16-bit
ADC
IN
Encoder (AAC)
OUT
(Compression data)
(Analog audio data)
(16-bit linear
PCM data)
Figure 1-2. System Configuration Example
CD
player
Evaluation board
AUDIO SERIAL INTERFACE
LINE IN
DSP
PARALLEL PORT
PC
(1) Input data
The input data is 16-bit linear PCM data sampled at 8 kHz to 96 kHz (refer to Table 1-1).
(2) AAC audio encoder
The AAC audio encoder reads 16-bit linear PCM data and outputs data while controlling the code quantity at a set
bit rate. The bit rate per frame is variable.
The maximum value of the bit rate that can be set differs depending on the sampling frequency. The bit rate takes
any value up to the maximum value. Table 1-2 shows the maximum value of the bit rate at a given sampling
frequency.
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User’s Manual U16314EJ1V0UM
CHAPTER 1 OVERVIEW
Table 1-2. Maximum Bit Rates
Sampling frequency
[Hz]
Maximum bit rate
[bps/ch]
8000
11025
12000
16000
22050
24000
32000
44100
48000
64000
88200
96000
48000
66150
72000
96000
132300
144000
192000
264600
288000
384000
529200
576000
(3) Timing diagram
Figure 1-3 shows the timing diagram of the AAC audio encoder.
Figure 1-3.Timing Diagram
16-bit linear PCM data of 1 frame
Compressed data of 1 frame
Audio serial input
interrupt handler
<1>
AAC compression
processing
<2>
Bit stream output
User Application
<3>
<4>
0
Time
Audio input data length of 1 frame
<1> 16-bit linear PCM data of one frame is input.
<2> The 16-bit linear PCM data of one frame is buffered and compressed.
<3> The compressed data is buffered and output.
<4> The user performs appropriate processing.
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User’s Manual U16314EJ1V0UM
CHAPTER 1 OVERVIEW
1.3 Compressed Data Format
For details of the compressed data format, refer to standards (ISO/IEC 13818-7 MPEG-2 Advanced Audio
Coding, AAC).
The µSAP77016-B17 specifications conform to standards.
1.3.1 ADIF format outline
Figure 1-4 shows the structure of ADIF format.
Figure 1-4. ADIF Format
1 file
Audio data
RAW
data 1
RAW
data 2
RAW
data x
RAW
data n − 1
RAW
data n
Header *1
Remark Header: Contains information for synchronizing, such as sampling frequency, bit rate, and mode.
Audio data: This is information related to the audio sample. It consists of multiple RAW data bit streams.
RAW data: This is a bit stream of the smallest unit that is decoded.
*1: Bit alignment
1.3.2 ADTS format outline
Figure 1-5 shows the structure of ADTS format.
Figure 1-5. ADTS Format
1 file
Frame
Frame
Frame
Frame
Frame
1 frame
Audio data
RAW
data 1
RAW
data 2
RAW
data 3
RAW
data 4
Frame
header
Variable
header
*1 *2
Remark Frame header: Contains information for synchronizing, such as sampling frequency, bit rate, and mode.
Variable header: This is information needed in decoding, such as the number of RAW data bit streams
included in the audio data.
Audio data: This is information related to the audio sample. It consists of multiple RAW data bit streams.
RAW data: This is a bit stream of the smallest unit that is decoded. There are up to four in one frame.
*1: Error check
*2: Bit alignment
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User’s Manual U16314EJ1V0UM
CHAPTER 1 OVERVIEW
1.4 Product Overview
1.4.1 Features
• Supports MPEG-2 AAC (Advanced Audio Coding) LC (Low Complexity) profile.
• Supports only two front channels (mono/stereo).
• 16-bit linear PCM data input.
• Code quantity control at set bit rate (refer to Table 1-2 Maximum Bit Rates) (bit rate per frame variable).
• Sampling frequency: 8 kHz to 96 kHz (refer to Table 1-1 Sampling Frequencies).
• Codes 1024 samples/frame in mono mode (1 channel).
• Codes 2048 samples/frame in stereo mode (2 channels).
• ADTS, ADIF, and RAW formats used as compressed data formats.
• Short block processing, TNS processing, and intensity stereo processing not supported.
1.4.2 Function
The µSAP77016-B17 converts 16-bit linear PCM data of one frame into compressed data.
1.4.3 Operating environment
(1) Operable DSPs:
µPD77110, 77113A, 77114, 77115, 77210, 77213
(2) Required memory size:
µSAP77016-B17 requires memory sizes shown in the following table.
Table 1-3. Required Memory Sizes
Memory
Type
Size [Kwords]
4.8
Instruction
memory
–
X memory
Y memory
RAM
Scratch area
Static area
4.7
2.0
3.4
4.0
0.1
0.1
2.8
ROM
RAM
Scratch area
Static area
Library area
ROM
Caution Place the X memory and Y memory areas used for the library in the internal ROM/RAM
space.
The required memory size shown above does not include the audio data and bit stream
data buffers. Refer to 2.5.3 I/O buffers.
Remark One word of instruction memory is 32 bits.
One word of X memory or Y memory is 16 bits.
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User’s Manual U16314EJ1V0UM
CHAPTER 1 OVERVIEW
(3) Required A/D converter specifications
2 channels, 16-bit resolution, sampling frequency shown in Table 1-1
(4) Software tools (Windows® version)
Table 1-4. Software Tools
Relevant DSP
Software Tools
µ PD77110 Family
WB77016 (Workbench (Assembler/Linker))
HSM77016 (High-speed simulator)
ID77016 (Debugger)
µ PD77210 Family
Atair Developer Studio (Workbench (Assembler/Linker))
µ PD7721x High-speed simulator
µ PD7721x Debugger
Remark These DSP software tools are produced by Atair Software GmbH.
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User’s Manual U16314EJ1V0UM
CHAPTER 1 OVERVIEW
1.4.4 Performance
Table 1-5 shows the MIPS values (measured values) necessary for real-time execution of processing of one frame.
• Measurement conditions
Simulator: HSM77016 (µPD77016 high-speed simulator)
Sampling frequency: 32 kHz, 44.1 kHz, 48 kHz
Evaluation result:The processing speed is measured when a stereo/mono audio file is compressed, and the
average value and maximum value are calculated.
The processing speed of only the AACENC_Encode function is included in compression. The
processing speed of the other functions and interrupt handlers is not included.
Table 1-5. MIPS Values of 1-Frame Compression Processing (Measured Values)
Sampling frequency [kHz]
Setting bit rate [kbps]
32
44.1
96
48
64
96
128
28.4
14.8
51.2
28.5
64
128
37.5
18.8
67.7
36.4
64
96
128
41.2
20.7
73.8
39.5
Average value
[MIPS]
Stereo
24.9
13.4
42.2
24.9
27.9
13.7
49.8
26.9
30.7
17.9
50.3
33.1
33.5
18.2
58.5
34.6
33.5
19.1
54.6
35.3
36.7
19.7
63.8
36.5
Mono
Stereo
Mono
Maximum value
[MIPS]
Remark These MIPS values were measured when evaluation was made by NEC Electronics. The maximum
values do not guarantee the worst values.
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User’s Manual U16314EJ1V0UM
CHAPTER 1 OVERVIEW
1.4.5 Directory configuration
The directory configuration of the µPSAP77016-B17 is shown below.
Library for PD77110, 77115, 77210
library
smp
a2eram.lib:
a2erom.lib:
aacenc.h:
µ
Library for PD77113A, 77114, 77213
µ
aacenc
Header file
sample.prj:
sample.inc:
sample.asm:
value.tmg:
pcm_in.tmg:
Project file
Include file for sample program
Sample source file
Timing file for parameter information
Timing file for data input
stream_out.tmg: Timing file for data output
A summary of each directory is shown below.
• library
This directory contains library files.
• smp/aacenc
This directory contains sample program source files, header files and timing files.
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User’s Manual U16314EJ1V0UM
CHAPTER 2 LIBRARY SPECIFICATIONS
2.1 Library Overview
µSAP77016-B17 provides the following three functions.
Table 2-1. List of Library Functions
Function Name Function
AACENC_Start
Initialization
AACENC_Encode
Compression process
AACENC_GetVersion
Obtain version information
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User’s Manual U16314EJ1V0UM
CHAPTER 2 LIBRARY SPECIFICATIONS
2.2 Application Processing Flow
Figure 2-1 shows an example of the processing of an application that uses µSAP77016-B17.
Figure 2-1. Application Processing Flow
Start
Data I/O initialization processing
· AD initial setup
· Interrupt enable, etc.
Encoder initialization
call AACENC_Start
Audio serial input
interrupt handler
16-bit liner PCM
data input
Yes
End of encoder?
No
Muted data input to PCM buffer
No
1 fram of
sampling count?
Yes
<1>
<2>
Encode processing
call AACENC_Encode
Processing to input data to
PCM buffer
Processing to output
compressed data of bit stream
buffer from host I/F
Encode processing
call AACENC_Encode
Processing <1> → <2>
repeated three times
Processing to output compressed data
of bit stream buffer from host I/F
Remark The 16-bit linear PCM data input processing of the interrupt handler is dependent upon the hardware of
the target system. Therefore, the user should design the input processing in accordance with their
target system.
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User’s Manual U16314EJ1V0UM
CHAPTER 2 LIBRARY SPECIFICATIONS
2.3 Function Specifications
2.3.1 AACENC_Start function
The AACENC_Start function initializes each parameter used by the encoder. It outputs the first header in the ADIF
format to the bit stream buffer only in the ADIF format. Call this function only once before using the
AACENC_Encode function.
[Classification]
AAC encoder initialization processing
AACENC_Start
[Function name]
[Summary of function] Initializes the parameters used by the µSAP77016-B17 (bit rate, number of audio channels,
sampling frequency, compression format, compression method, and buffer pointer used by
µSAP77016-B17).
If the compression format is ADIF only, this function outputs the first header in the ADIF
format to the bit stream buffer.
[Format]
call AACENC_Start
[Arguments]
R0L First address of structure consisting of parameters necessary for compressing in X
memoryNote 1
R1L First address of output buffer (bit stream buffer) for encoder in X memoryNote 2
.
The ADIF header is output to this bit stream buffer only when encoding is performed
in the ADIF format.
R2L First address of static area in X memoryNote 2
R3L First address of scratch area in X memoryNote 2
R4L First address of static area in Y memoryNote 2
R5L First address of scratch area in Y memoryNote 2
R0L When 0 or greater: Size of compressed bit stream (number of bytes)
When negative: Error
[Return value]
An error is returned if any of the following conditions is satisfied.
• If a value other than 0 or 1 is set to the speaker_config member of the structure
consisting of the parameters necessary for compressionNote 1
.
• If a sampling frequency other than those supported by the µSAP77016-B17 is set
to the higher word and lower word of the sampling_freq member of the structure
consisting of the parameters necessary for compressionNote 1
.
[Registers used]
r0, r1, r2, r3, r5, dp0, dp4
[Hardware resources] Maximum stack level
Maximum loop stack level
2
1
Maximum number of repeats
7
Maximum number of cycles
13937
Notes 1. For the parameters necessary for compression, refer to 2.4 Parameters Necessary for Compression.
2. For the memory area and I/O buffer, refer to 2.5 Memory Structure.
Caution Secure a memory area before calling this function.
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User’s Manual U16314EJ1V0UM
CHAPTER 2 LIBRARY SPECIFICATIONS
2.3.2 AACENC_Encode function
The AACENC_Encode function compresses audio data of 16 bits × 2048 samples (stereo) or 16 bits × 1024
samples (mono) at a specified bit rate.
[Classification]
AAC encode processing
AACENC_Encode
[Function name]
[Summary of function] Compresses the 16-bit linear PCM data in the PCM buffer and then outputs the compressed
data to the bit stream buffer.
[Format]
call AACENC_Encode
[Arguments]
R0L First address of structure consisting of parameters necessary for compressing in X
memoryNote 1
R1L First address of input buffer (PCM buffer) for data input for encoder in X memoryNote 2
R2L First address of output buffer (bit stream buffer) for data output from encoder in X
memoryNote 2
R3L First address of static area in X memoryNote 2
R4L First address of static area in Y memoryNote 2
R0L When 0 or greater: Size of compressed bit stream (number of bytes)
When negative: Error
[Return value]
If the AACENC_Encode function is called after the AACENC_Start function has
returned an error, the AACENC_Encode function also returns an error.
r0, r1, r2, r3, r4, r5,
[Registers used]
dp0, dp1, dp2, dp3, dp4, dp5, dp6, dp7,
dn0, dn1, dn2, dn3, dn4, dn5, dn6, dn7,
dmx, dmy
[Hardware resources] Maximum stack level
Maximum loop stack level
6
3
Maximum number of repeats
Maximum MIPS value
51
73.8 MIPS (48 kHz sampling, 128 Kbps, stereo)
Notes 1. For the parameters necessary for compression, refer to 2.4 Parameters Necessary for Compression.
2. For the memory area and I/O buffer, refer to 2.5 Memory Structure.
Caution On completion of encoding, the user should input muted data of 1 frame (2048 words (stereo)/1024
words (mono)) to the PCM buffer and call the AACENC_Encode function three times. This can
prevent information of the previous audio data from affecting compression of the next audio data.
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User’s Manual U16314EJ1V0UM
CHAPTER 2 LIBRARY SPECIFICATIONS
2.3.3 AACENC_GetVersion function
The AACENC_GetVersion function returns the version number of the µSAP77016-B17.
[Classification]
[Function name]
[Function]
Version information acquisition
AACENC_GetVersion
Returns the version number of the µSAP77016-B17 library in a 32-bit value.
Version when R0 = 0x00’0x0001’0x0100: V1.01
[Format]
AACENC_GetVersion
[Arguments]
[Return value]
None
R0H Major version number
R0L Minor version number
r0
[Registers used]
[Hardware resources] Maximum stack level
Maximum loop stack level
0
0
0
6
Maximum number of repeats
Maximum number of cycles
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User’s Manual U16314EJ1V0UM
CHAPTER 2 LIBRARY SPECIFICATIONS
2.4 Parameters Necessary for Compression
Secure a structure (refer to Figure 2-2) consisting of the parameters necessary for compression on X memory. Set
the information on each parameter to this structure before calling the AACENC_Start and AACENC_Encoder
functions.
Figure 2-2. Structure Consisting of Parameters Necessary for Compression
First address of
structure: R0L
<1> bitrate: Total 2 words
Higher word
Lower word
<2> speaker_config: 1 word
<3> sampling_freq: Total 2 words
7 words
Higher word
Lower word
<4> header_type: 1 word
<5> mpeg_id: 1 word
<1> bitrate (2 words): This parameter sets the bit rate (bps).
Example: To set the bit rate to 264600 bps (0t264600 = 0x40998), set the higher word to 0x0004 and the
lower word to 0x0998.
<2> speaker_config (1 word): This parameter sets the number of audio channels. If a value other than 0 or 1
is set to this parameter, the AACENC_Start function returns an error.
0: Mono (1 ch)
1: Stereo (2 chs)
Example To select stereo (2 chs), set speaker_config to 0x0001.
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CHAPTER 2 LIBRARY SPECIFICATIONS
<3> sampling_freq (2 words): This parameter specifies the sampling frequency (Hz). The frequencies that can
be specified are listed in Table 2-2 below.
If a frequency not listed in this table is specified, the AACENC_Start function returns an error.
Table 2-2. Sampling Frequencies
Frequency [Hz]
8000
11025
12000
16000
22050
24000
32000
44100
48000
64000
88200
96000
Example To set the bit rate to 96000 Hz (0t96000 = 0x17700), set the higher word of sampling_freq to
0x0001, and the lower word to 0x7700.
<4> header_type (1 word): This parameter specifies the header type. The following header types can be
specified.
0: RAW format (without header)
1: ADIF format
2: ADTS format
Example To select the ADTS format, set header_type to 0x0002.
<5> mpeg_id (1 word): This parameter specifies the compression method. The µSAP77016-B17 does not
support MPEG-4/AAC. Therefore, be sure to set mpeg_id to 0x0001 .
0: Setting prohibited (MPEG-4/AAC)
1: MPEG-2/AAC
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User’s Manual U16314EJ1V0UM
CHAPTER 2 LIBRARY SPECIFICATIONS
2.5 Memory Structure
With the µSAP77016-B17, the user must define the memory area and I/O buffer area necessary for processing.
The scratch memory area and static memory area must be separately defined. For the size of each memory area,
refer to Table 2-3.
Table 2-3. Symbol Name/Memory Sizes
Symbol Name
scratch_x_area
scratch_y_area
static_x_area
static_y_area
Size [Words]
4756
X/Y Plane
Description
Scratch area
X
Y
X
Y
4096
Scratch area
Static area
Static area
2048
5
Caution Place the X memory and Y memory areas used for the library in the internal ROM/RAM space.
The size of the scratch memory area and static memory area shown above does not include the
audio data and bit stream data buffers. Refer to 2.5.3 I/O buffers.
2.5.1 Scratch area
The scratch area is a memory area that can be discarded when it is not used by the µSAP77016-B17.
The user can use the scratch area freely after encoding processing of one frame.
When the µSAP77016-B17 uses this area again, however, the information set by the user to this area is not
guaranteed.
Example LIB_SCRATCH_X xramseg
scratch_x_area: ds 4756
LIB_SCRATCH_Y yramseg
scratch_y_area: ds 4096
2.5.2 Static area
The static area is a memory area that cannot be discarded even when the µSAP77016-B17 does not operate. The
user must not use the static area.
If the user manipulates this area after initialization, the correct operation of the µSAP77016-B17 cannot be
guaranteed.
Example LIB_STATIC_X xramseg
static_x_area:
ds 2048
LIB_STATIC_Y yramseg
static_y_area: ds
5
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User’s Manual U16314EJ1V0UM
CHAPTER 2 LIBRARY SPECIFICATIONS
2.5.3 I/O buffers
The I/O buffer is an area to which audio data (16-bit linear PCM data) is input and from which bit stream data is
output. The user must secure an area for the I/O buffers in X memory.
The user can freely use the I/O buffer area after encoding processing of one frame.
If the audio data or bit stream data area is manipulated during encoding processing, the correct operation is not
guaranteed.
Example Necessary I/O buffers
MAIN_X_WORK
sPCM:
xramseg
ds
2048
768
__BitstreamBuffer: ds
Figure 2-3. User-Defined Input Buffer (PCM Buffer)
First address of
input buffer: R1L
L
R
Size of input buffer
Mono (1 channel): 1024 words or more
Stereo (2 channels): 2048 words or more
Figure 2-4. User-Defined Output Buffer (Bit Stream Buffer)
First address of
output buffer: R2L
Size of output buffer
Mono (1 channel): 384 words or more
Stereo (2 channels): 768 words or more
Caution
For mono (when the number of channels is 1), set the size of the PCM buffer to 1024 words or
more. Also secure 384 words or more for the bit stream buffer.
For stereo (when the number of channels is 2), set the size of the PCM buffer to 2048 words or
more. Also secure 768 words or more for the bit stream buffer.
If a buffer of the necessary size is not secured, the output result cannot be guaranteed.
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User’s Manual U16314EJ1V0UM
CHAPTER 3 INSTALLATION
3.1 Installation Procedure
The µSAP77016-B17 (AAC encoder middleware) is supplied on a CD-ROM. The procedure for installing the
µSAP77016-B17 in the host machine is outlined below.
(1) Set the floppy disk in the floppy disk drive and copy the files to the directory where WB77016 and
HSM77016 (DSP tools) are used (e.g. C:\DSPTools).
The following is an example of when files are copied from the Q drive to the C drive.
Q:\>xcopy /s *.* c:\DSPTools<CR>
(2) Confirm that the files have been copied. Refer to 1.4.5 Directory configuration for details on the
directories.
C:\>dir c:\DSPTools<CR>
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User’s Manual U16314EJ1V0UM
CHAPTER 3 INSTALLATION
3.2 Sample Program Creation Procedure
A sample program is stored in the smp directory.
The sample program operates on HSM77016 (high-speed simulator) Ver. 2.32 or later. Using the timing files
described later makes it possible to simulate data I/O. Refer to APPENDIX SAMPLE PROGRAM SOURCE
regarding timing files.
The following is an explanation of how to build the AAC decoder middleware sample program.
(1) Start up the WB77016 (workbench) Ver.2.4 or later.
(2) Open the sample.prj project file.
Example Specify sample.prj with the Open Project command on the Project menu.
(3) Execute Build and confirm that sample.lnk has been created.
Example The sample.lnk file can be created by selecting the Build All command from the Make menu.
(4) Start up the HSM77016 (high-speed simulator) Ver.2.32 or later.
(5) Open the sample.lnk file.
Example Specify sample.lnk with the Open command on the File menu.
(6) Open timing files (value.tmg, pcmin.tmg, streamout.tmg).
Example Specify value.tmg with the Open command on the File menu.
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User’s Manual U16314EJ1V0UM
CHAPTER 3 INSTALLATION
3.3 Symbol Naming Conventions
Table 3-1 shows the naming conventions of the symbols used for the µSAP77016-B17. Do not use symbol names
in duplicate when other applications are used in combination.
Table 3-1. Symbol Naming Conventions
Classification
Convention
Function name, code segment name (IMSEG), AACENC_XXXX
constant segment name (ROMSEG/RAMSEG),
constant name, variable area name
Remark XXXX is an alphanumeric character string.
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User’s Manual U16314EJ1V0UM
CHAPTER 4 SYSTEM EXAMPLE
4.1 Simulation Environment Using Timing File
The simulation environment of the compression processing of the µSAP77016-B17 is shown below. Audio data
(16-bit linear PCM data) is input and compressed in 1-frame units, and the compressed data is output.
[Software environment]
• High-speed simulator: HSM77016 Ver.2.32 or later
• Sample program: sample.lnk (created in 3.2 Sample Program Creation Procedure)
• Timing file: value.tmg, pcm_in.tmg, stream_out.tmg
4.2 Operation
<1> Start up the high-speed simulator.
<2> Open sample.lnk created in 3.2 Sample Program Creation Procedure.
Example Specify sample.lnk by clicking ‘file → open’.
<3> Open the timing files (value.tmg, pcm_in.tmg, stream_out.tmg).
Example Specify value.tmg by clicking ‘file → open’.
<4> Execute using Run.
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User’s Manual U16314EJ1V0UM
APPENDIX SAMPLE PROGRAM SOURCE
A.1 Header File (aacenc.h)
#ifndef
#define
__aacenc_h
__aacenc_h
#define
#define
#define
#define
AACENC_STATIC_AREA_X_SIZE
AACENC_STATIC_AREA_Y_SIZE
AACENC_SCRATCH_AREA_X_SIZE
AACENC_SCRATCH_AREA_Y_SIZE
2048
5
4756
4096
#define
HeaderSize
7
extrn
extrn
extrn
AACENC_Start
AACENC_Encode
AACENC_GetVersion
#endif
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User’s Manual U16314EJ1V0UM
APPENDIX SAMPLE PROGRAM SOURCE
A.2 Include File for Sample Program (sample.inc)
(1/2)
VECTOR
imseg at 0x200
%define (JmpVect(addr))
(
jmp addr
;
;
;
;
nop
nop
nop
)
%define (NopVect)
(
nop
reti
nop
nop
)
;
;
;
;
ivReset:
%JmpVect(StartUp)
%NopVect
%NopVect
%NopVect
ivINT1:
;
;
;
;
%NopVect
ivINT2:
;
;
;
;
;
;
;
;
;
;
;
;
%NopVect
ivINT3:
%NopVect
ivINT4:
%NopVect
ivINT5:
%NopVect
ivINT6:
%NopVect
ivINT7:
%NopVect
ivINT8:
%NopVect
ivINT9:
%NopVect
ivINT10:
%NopVect
ivINT11:
%NopVect
ivINT12:
%NopVect
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User’s Manual U16314EJ1V0UM
APPENDIX SAMPLE PROGRAM SOURCE
(2/2)
%define(Initialize)
(
clr (r0)
r1 = r0
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
r2 = r0
r3 = r0
r4 = r0
r5 = r0
r6 = r0
r7 = r0
dp0 = r0l
dp1 = r0l
dp2 = r0l
dp3 = r0l
dp4 = r0l
dp5 = r0l
dp6 = r0l
dp7 = r0l
dn0 = r0l
dn1 = r0l
dn2 = r0l
dn3 = r0l
dn4 = r0l
dn5 = r0l
dn6 = r0l
dn7 = r0l
dmx = r0l
dmy = r0l
)
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User’s Manual U16314EJ1V0UM
APPENDIX SAMPLE PROGRAM SOURCE
A.3 Sample Source File (sample.asm)
(1/5)
#include "aacenc.h"
LIB_STATIC_X xramseg
static_x_area:
ds
ds
ds
ds
AACENC_STATIC_AREA_X_SIZE
AACENC_STATIC_AREA_Y_SIZE
AACENC_SCRATCH_AREA_X_SIZE
AACENC_SCRATCH_AREA_Y_SIZE
LIB_STATIC_Y yramseg
static_y_area:
LIB_SCRATCH_X
xramseg
scratch_x_area:
LIB_SCRATCH_Y
yramseg
scratch_y_area:
MAIN_X_WORK xramseg at 0x6000
sPCM:
ds
ds
1024*2
2048/2
__BitstreamBuffer:
Header:
_Header_bitrate_H:
_Header_bitrate_L:
ds
ds
1
1
1
1
1
1
1
1
1
1
_Header_speaker_config: ds
_Header_sampling_freq_H: ds
_Header_sampling_freq_L: ds
_Header_header_type:
_Header_mpeg_id:
_OutputBufferFlag:
_valued:
ds
ds
ds
ds
ds
_frame_number:
MAIN_CTRL_WORK
_s:
xramseg at 0x5ffc
ds
1
1
1
1
; Reference value of timing files
_stream_length:
_FW_out_flag:
ds
ds
ds
; Reference value of timing files
; Reference value of timing files
; Reference value of timing files
_FW_run_flag:
#defineHeader_bitrate_H
#defineHeader_bitrate_L
#defineHeader_speaker_config
#defineHeader_sampling_freq_H
#defineHeader_sampling_freq_L
#defineHeader_header_type
#defineHeader_mpeg_id
_Header_bitrate_H:x
_Header_bitrate_L:x
_Header_speaker_config:x
_Header_sampling_freq_H:x
_Header_sampling_freq_L:x
_Header_header_type:x
_Header_mpeg_id:x
#defineOutputBufferFlag
#definevalued
_OutputBufferFlag:x
_valued:x
#defineframe_number
_frame_number:x
#defines
_s:x
#definestream_length
#defineFW_out_flag
#defineFW_run_flag
_stream_length:x
_FW_out_flag:x
_FW_run_flag:x
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User’s Manual U16314EJ1V0UM
APPENDIX SAMPLE PROGRAM SOURCE
(2/5)
#include " sample.inc"
MAIN imseg at 0x240
StartUp:
%Initialize
;
clr (r0)
;
;
;
dp0 = __BitstreamBuffer
rep 2048/2
*dp0++ = r0h
;
;
;
;
dp0 = sPCM
rep 1024*2
*dp0++ = r0h
dp4 = 0x4000
rep 0x2000
;
;
;
*dp4++ = r0h
*OutputBufferFlag = r0h
*frame_number = r0h
*valued = r0h
;
;
;
;
*stream_length = r0h
clr (r0)
;run_flag = 0
*FW_run_flag = r0h
r0 = *FW_run_flag
if (r0 == 0) jmp $-1
;
;while (run_flag == 0) {}
;
;; header analysis ;; (MSB) ;; 22+2+4+6+2+8 = 44byte -> 22word
dp0 = sPCM
rep 22/2
;
;fread (header, 1, 22, fi)
r0 = *dp0++
r0 = *dp0++
;
;fread (&s, 1, 2, fi)
*s = r0h
;
r1 = r0 sra 16
;Header.speaker_config = (s == 1) ? 0 : 1
r1 = r1 - 1
;
clr (r0)
;
if (r1 != 0) r0 = r0 + 1
*Header_speaker_config = r0l
r0 = *dp0++
;
;
;fread (&i, 1, 4, fi)
r0l = *dp0++
;
*Header_sampling_freq_H = r0l
*Header_sampling_freq_L = r0h
;Header.sampling_freq = i
;
;fread (tmp, 1, 6+2+8, fi)
clr (r0)
;
r0l = 64000
;64kbps
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User’s Manual U16314EJ1V0UM
APPENDIX SAMPLE PROGRAM SOURCE
(3/5)
nop;
*Header_bitrate_H = r0h
*Header_bitrate_L = r0l
r0l = 1
;
;
;MPEG-2 AAC
*Header_mpeg_id = r0l
r0l = 2
;
;header_type = 2
*Header_header_type = r0l
r0l = Header
;
;ret = AACENC_Start (&Header, BitstreamBuffer)
;
r1l = __BitstreamBuffer
r2l = static_x_area
r3l = scratch_x_area
r4l = static_y_area
r5l = scratch_y_area
;
;
;
;
call AACENC_Start
;
if (r0 < 0) jmp _exit
call CopyOutputBuffer
;
;CopyOutputBuffer (ret, BitstreamBuffer)
_while1:
clr (r0)
;while (1) {
;
;
;
;
;
run_flag = 0
*FW_run_flag = r0h
r0 = *FW_run_flag
while (run_flag == 0) {}
if (r0 == 0) jmp $-1
if (r0 < 0) jmp _break1
if (run_flag < 0) break
r0l = Header
;
;
;
ret = AACENC_Encode (&Header, sPCM, BitstreamBuffer)
r1l = sPCM
r2l = __BitstreamBuffer
r3l = static_x_area
r4l = static_y_area
;
;
call AACENC_Encode
;
;
;
if (r0 < 0) jmp _exit
call CopyOutputBuffer
if (ret < 0) exit(ret)
CopyOutputBuffer (ret, BitstreamBuffer)
r1l = *frame_number
r1 = r1 + 1
;
;
;
frame_numfer++
*frame_number = r1l
jmp _while1
;}
_break1:
dp0 = sPCM
clr (r0)
rep 2048
;Clear (0) sPCM area
;for (i = 0; i < 2048; i++) {
;
sPCM[i] = 0
*dp0++ = r0h
;}
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User’s Manual U16314EJ1V0UM
APPENDIX SAMPLE PROGRAM SOURCE
(4/5)
;ret = AACENC_Encode (&Header, sPCM, BitstreamBuffer)
r0l = Header
r1l = sPCM
;
;
r2l = __BitstreamBuffer
r3l = static_x_area
r4l = static_y_area
;
;
call AACENC_Encode
;
if (r0 < 0) jmp _exit
call CopyOutputBuffer
;if (ret < 0) exit(ret)
;CopyOutputBuffer (ret, BitstreamBuffer)
r0l = Header
;ret = AACENC_Encode (&Header, sPCM, BitstreamBuffer)
r1l = sPCM
;
;
r2l = __BitstreamBuffer
r3l = static_x_area
r4l = static_y_area
;
;
call AACENC_Encode
;
if (r0 < 0) jmp _exit
call CopyOutputBuffer
;if (ret < 0) exit(ret)
;CopyOutputBuffer (ret, BitstreamBuffer)
r0l = Header
;ret = AACENC_Encode (&Header, sPCM, BitstreamBuffer)
r1l = sPCM
;
;
r2l = __BitstreamBuffer
r3l = static_x_area
r4l = static_y_area
;
;
call AACENC_Encode
;
if (r0 < 0) jmp _exit
call CopyOutputBuffer
;if (ret < 0) exit(ret)
;CopyOutputBuffer (ret, BitstreamBuffer)
r0 = *OutputBufferFlag
if (r0 == 0) jmp _exit
r0 = *valued
;
;
;
;
;
;
*0x4000:y = r0h
r0l = 1
*stream_length = r0l
clr (r1)
;
;
;
;
*FW_out_flag = r1h
r1 = *FW_out_flag
if (r1 == 0) jmp $-1
_exit:
clr (r0)
;
r0l = 0x2222
;length = 0x2222
*stream_length = r0l
*FW_out_flag = r0h
*FW_run_flag = r0h
jmp StartUp
;
;out_flag = 0
;run_flag = 0
;
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User’s Manual U16314EJ1V0UM
APPENDIX SAMPLE PROGRAM SOURCE
(5/5)
;; Copy from BitstreamBuffer to output buffer ;;
CopyOutputBuffer:
if (r0 == 0) ret
;
dp4 = 0x4000
;wpt = 0x4000
dp0 = __BitstreamBuffer
r2 = *OutputBufferFlag
if (r2 != 0) jmp _L1
;rpt = BitstreamBuffer
;if (OutputBufferFlag == 0) {
;
r1 = r0 sra 1
*stream_length = r1l
r2 = r0 & 1
;
;
;
;
;
;
;
;
;
;
;
count = len >> 1
loop r1l {
for ( ; count > 0; count--) {
r1 = *dp0++
tmp = *rpt++
*wpt++ = tmp
}
*dp4++ = r1h
}
*OutputBufferFlag = r2l
if (r2 == 0) jmp _L2
r1 = *dp0
if (len & 1) {
valued = *rpt
}
*valued = r1h
jmp _L2
;}
_L1:
;else {
count = len >> 1
r1 = r0 sra 1
r2 = r0 & 1
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
if (len & 1)
count++
if (r2 != 0) r1 = r1 + 1
*stream_length = r1l
r0 = *valued
tmp = valued << 8
r0 = r0 sra 8
loop r1l {
for ( ; count > 0; count--) {
r0l = *dp0++
tmp |= *rpt++
tmp <<= 8
r0 = r0 sll 8
*dp4++ = r0h
*wpt++ = (tmp >> 16)
tmp <<= 8
r0 = r0 sll 8
}
}
r0 = r0 sll 8
*valued = r0h
clr (r1)
valued = tmp >> 16
*wpt = valued
if (r2 == 0) r1 = r1 + 1
*OutputBufferFlag = r1l
_L2:
;}
clr (r0)
;
;
;
;
*FW_out_flag = r0l
r0 = *FW_out_flag
if (r0 == 0) jmp $-1
ret
;return
end
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User’s Manual U16314EJ1V0UM
APPENDIX SAMPLE PROGRAM SOURCE
A.4 Timing File for Parameter Information (value.tmg)
global
s, FW_run_flag, FW_out_flag, stream_length, pcm_start, stream_start
global
global
out44_128, out44_96, out44_80, out44_64
out32_96, out32_64, out32_48, out32_40
global
global
global
flag01, flag02, flag03, flag04, flag05
flag08, flag09, flag12, flag13, flag19
flag21
set s
= 0x5ffc
set stream_length = 0x5ffd
set FW_out_flag
set FW_run_flag
set pcm_start
= 0x5ffe
= 0x5fff
= 0x6000
= 0x4000
set stream_start
set out44_128 = 1 << 7
set out44_96 = 1 << 6
set out44_80 = 1 << 5
set out44_64 = 1 << 4
set out32_96 = 1 << 3
set out32_64 = 1 << 2
set out32_48 = 1 << 1
set out32_40 = 1 << 0
set flag01 = 0
set flag02 = 0
set flag03 = 0
set flag04 = 0
set flag05 = 0
set flag08 = 0
set flag09 = 0
set flag12 = 0
set flag13 = 0
set flag19 = 0
set flag21 = 0
set flag01 = out44_128 | out44_96 | out44_80 | out44_64 | out32_96 | out32_64 | out32_48 | out32_40
set flag02 = out44_128 | out44_96 | out44_80 | out44_64 | out32_96 | out32_64 | out32_48 | out32_40
set flag03 = out44_128 | out44_96 | out44_80 | out44_64 | out32_96 | out32_64 | out32_48 | out32_40
set flag04 = out44_128 | out44_96 | out44_80 | out44_64 | out32_96 | out32_64 | out32_48 | out32_40
set flag05 = out44_128 | out44_96 | out44_80 | out44_64 | out32_96 | out32_64 | out32_48 | out32_40
set flag08 = out44_128 | out44_96 | out44_80 | out44_64 | out32_96 | out32_64 | out32_48 | out32_40
set flag09 = out44_128 | out44_96 | out44_80 | out44_64 | out32_96 | out32_64 | out32_48 | out32_40
set flag12 = out44_128 | out44_96 | out44_80 | out44_64 | out32_96 | out32_64 | out32_48 | out32_40
set flag13 = out44_128 | out44_96 | out44_80 | out44_64 | out32_96 | out32_64 | out32_48 | out32_40
set flag19 = out44_128 | out44_96 | out44_80 | out44_64 | out32_96 | out32_64 | out32_48 | out32_40
set flag21 = out44_128 | out44_96 | out44_80 | out44_64 | out32_96 | out32_64 | out32_48 | out32_40
end
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User’s Manual U16314EJ1V0UM
APPENDIX SAMPLE PROGRAM SOURCE
A.5 Timing File for Data Input (pcm_in.tmg)
(1/2)
global
global
global
global
global
global
local
s, FW_run_flag, FW_out_flag, stream_length, pcm_start
out44_128, out44_96, out44_80, out44_64
out32_96, out32_64, out32_48, out32_40
flag01, flag02, flag03, flag04, flag05
flag08, flag09, flag12, flag13, flag19
flag21
size, data, pcm
local
sz
local
bitrate
addr
local
set addr = 0x27c
sub hanten
; (data)
set data = ((data >> 8) & 0xff) | ((data & 0xff) << 8)
endsub
sub WriteData
hanten
set *pcm:x = data
set pcm = pcm + 1
endsub
sub Writting
local
; (size, sz)
tmp
set pcm = pcm_start
if (size >= sz)
rept sz
input data
WriteData
endrept
set size = size - sz
else
set tmp = sz - size
rept size
input data
WriteData
endrept
set data = 0
rept tmp
WriteData
endrept
set size = 0
endif
endsub
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User’s Manual U16314EJ1V0UM
APPENDIX SAMPLE PROGRAM SOURCE
(2/2)
sub wave2stream
input format hex
input size
set *FW_run_flag:x = 1
wait cond (*FW_run_flag:x != 1)
set sz = 22
Writting
if (*s:x == 1)
set sz = 1024
else
set sz = 2048
endif
set *FW_run_flag:x = 1
wait cond ip == addr
set r0 = bitrate
do
set *FW_run_flag:x = 1
wait cond (*FW_run_flag:x != 1)
exit (size < sz)
Writting
enddo
set *FW_run_flag:x = -1
wait cond (*FW_run_flag:x != -1)
endsub
;;; Wait for initialize ;;;
wait 1
if (flag02)
if (flag02 & out32_40)
;;; 02.wav / 32kHz / 40kbps ;;;
open input "02_32.dat"
set bitrate = 40000
wave2stream
close input
endif
endif
break
end
40
User’s Manual U16314EJ1V0UM
APPENDIX SAMPLE PROGRAM SOURCE
A.6 Timing File for Data Output (stream_out.tmg)
global
global
global
global
global
global
FW_out_flag, stream_length, stream_start
out44_128, out44_96, out44_80, out44_64
out32_96, out32_64, out32_48, out32_40
flag01, flag02, flag03, flag04, flag05
flag08, flag09, flag12, flag13, flag19
flag21
sub wave2stream2
local
data, rpt, length
output #10 format dec
do
set *FW_out_flag:x = 1
wait cond *FW_out_flag:x != 1
set length = *stream_length:x
exit length >= 0x2000
if (length)
set rpt = stream_start
rept length
set data = *rpt:y
output #10 data
set rpt = rpt + 1
endrept
endif
enddo
endsub
;;; main ;;;
wait 1
if (flag02)
;;; 02.wav ;;;
if (flag02 & out32_40)
open output #10 "02_32_40.dat"
wave2stream2
close output #10
endif
endif
end
41
User’s Manual U16314EJ1V0UM
[MEMO]
42
User’s Manual U16314EJ1V0UM
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