INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL® PRODUCTS. NO LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS DOCUMENT. EXCEPT AS PROVIDED IN INTEL'S TERMS AND CONDITIONS OF SALE FOR SUCH PRODUCTS, INTEL ASSUMES NO LIABILITY WHATSOEVER, AND INTEL DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY, RELATING TO SALE AND/OR USE OF INTEL PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT.
Intel products are not intended for use in medical, life saving, life sustaining, critical control or safety systems, or in nuclear facility applications. Intel may make changes to specifications and product descriptions at anytime, without notice.
By downloading and installing this sample, you hereby agree that the accompanying Materials are being provided to you under the terms and conditions of the End User License Agreement for the Intel® Integrated Performance Primitives product previously accepted by you. Please refer to the file ipplic.htm for more information.
AMR wideband speech codec is an international standard promoted by 3GPP and other organizations. Implementations of these standards, or the standard enabled platforms may require licenses from various entities, including Intel Corporation.
It shoud be noted that the size of an output bitstream file produced by the encoder sample should not be expected to be smaller than the size of an input PCM file as every bit of each frame stored in bitstream file as 16bit data.
Additional information on this software as well as other Intel® Software Development Products is available at http://developer.intel.com/software/products/.
To demonstrate that the codec implementation is thread-safe, the following procedure is performed: each thread processes its own copy of an input file independently, then the results are compared - if they are not identical an error is reported.
Note 1: This model differs from the model where many threads process the same stream in parallel, therefore it should not be expected that the given codec runs faster in the multi-threaded mode than it runs in the single-thread mode.
The Intel® IPP AMR Wideband Sample for Linux* package contains
the following files:
./ipp_sample/speech-coding/ | |
ipplic.htm |
End User License Agreement |
support.txt | Contains information for technical support |
./ipp_sample/speech-coding/AMRWB/ | |
readme.htm | This file |
Makefile | Makefile |
build.sh | Shell script to build the sample's executable files |
./ipp_sample/speech-coding/AMRWB/include/ | |
amrwb_types.h | Coder type definition header file |
amrwbapi.h | API header |
usc.h | USC header file |
./ipp_sample/speech-coding/AMRWB/api/ | |
bitpack.c | Bitstream pack/unpack functions file |
encamrwb.c | GSMAMR functions for encoding speech file |
decamrwb.c | GSMAMR functions for decoding speech file |
dtx_util.c | DTX functions file |
ownamrwb.c | Coder functions file |
tab_util.c | Coder tables file |
util.c | Auxiliary functions |
uscamrwb.c | USC functions file |
ownamrwb.h | Coder constants, types and inner functions definition header file |
scratchmem.h | Scratch/stack memory management header file |
./ipp_sample/speech-coding/AMRWB/samples/ | |
encoder.c | Encoder main program file |
encoder.h | Encoder main header file |
decoder.c | Decoder main program file |
decoder.h | Decoder main header file |
util_e.c | Encoder utilities file |
util_e.h | Encoder utilities header file |
util_d.c | Decoder utilities file |
util_d.h | Decoder utilities header file |
./ipp_sample/speech-coding/AMRWB/vm/include/ | |
vm_thread.h | Header file containing definition of cross platform functionality, which provides threading support |
vm_types.h | Header file containing definition of cross platform types, which are used in definitions of cross platform functionality |
./ipp_sample/speech-coding/AMRWB/vm/include/sys/ | |
vm_types_linux32.h | Header file containing definition of cross platform types for IA-32 platforms running Linux* |
./ipp_sample/speech-coding/AMRWB/vm/src/ | |
vm_thread_linux32.c | Source file containing implementation of threading support for IA-32 platforms running Linux* |
Extract all files in l_ipp-sample-speech-coding_*.tgz to a desired folder. Please make sure to preserve the directory structure. The files for the AMRWB sample will be found in the ./ipp_sample/speech-coding/AMRWB/ folder.
Verify that the IPPROOT environment variables contain the path where the IPP package is installed.
Evaluation Users: If you are using an Evaluation version of Intel(R) IPP, please make sure that IPPROOT is changed to: /opt/intel/ipp41_eval/ia32_itanium (using the default install directory).
Execute the file build.sh to build the AMRWB coder sample.
After building, be sure that the LD_LIBRARY_PATH environment variable includes the directories of the .so files from the Intel® IPP installation. This can be accomplished by entering the following at the command prompt:
export LD_LIBRARY_PATH=/opt/intel/ipp41/ia32_itanium/sharedlib:/opt/intel/ipp41/ia32_itanium/sharedlib/linux32:$LD_LIBRARY_PATH
or by running the shell script ippvars32.sh from the Intel® IPP installation (located in /opt/intel/ipp41/ia32_itanium/tools/env/ by default).
To run one of the AMRWB encoder sample, type:
encodergsmamr [options] <inPCMFile> <outBitstreamTestFile>
Encoder option list:
-r660|r885|r1265|r1425|r1585|r1825|r1985|r2305|r2385|r<filename> bit rates
6.6, 8.85, 12.65,
14.25, 15.85, 18.25, 19.85,23.05 or 23.85 kbit/s or bit rates given by file on per frame basis.
-v VAD enabled. Default: VAD disabled.
-a input data is A-Law PCM.
-u input data is Mu-Law PCM.
Default: input data is 16-bit linear PCM.
-T don`t truncate input data to 14 bits.
-n output
additional information.
-c write to codecspeed.csv file information about coder
performance.
-s <rep> repeater, how many times input file shall be encoded without
reset of encoder, default: <rep>=1
-t <num> number of threads to perform the same encoding operation ,
default: <num>=1.
<inPCMFile> - input file contains 16-bit 16 KHz PCM to encode,
<outBitstreamTestFile> - output file, to write the encoded bit-stream, if repeater is on only the result of last encoding will be written into output file.
To run one of the AMRWB decoder sample, type:
decodergsmamr [options] <inBitstreamFile> <outPCMFile>
Decoder option list:
-a Write the output data in A-Law PCM format.
-u Write the output data in Mu-Law PCM format.
Default: Write the output data in 16-bit linear PCM format.
-T don`t truncate output data to 14 bits.
-n output
additional information.
-c write to codecspeed.csv file information about coder
performance.
-s <rep> repeater, how many times input file shall be encoded without
reset of encoder, default: <rep>=1
-t <num> number of threads to perform the same encoding operation ,
default: <num>=1.
<inBitstreamFile> - input file contains bit-stream to decode,
<outPCMFile> - output file, to write the decoded PCM, if repeater is on only the result of last encoding will be written into output file.
NOTE: The bit-stream and PCM files (after decode) are used in the format of the test files of the AMRWB simulation software which is available via ETSI official WEB site. To check the bit-to-bit exactness against them, correspondent bit-stream and PCM test files shall be used in pair.
Your feedback on the Intel IPP samples is very important to us and your input will be considered for future releases.
When building original sample code, let us know if you have any problems with:
To receive technical support and product updates for the tools provided in this product you need to register at the Intel® Registration Center and click on "Create New Account".
For information about the Intel® IPP's FAQ's, tips and tricks, and other support information, please visit: http://support.intel.com/support/performancetools/libraries/
Note:
If you are having trouble registering or unable to access your Premier Support
account, contact developer.support@intel.com. Please do not email your
technical issue to developer.support@intel.com as it is not a secure
medium.
To submit an issue via the Intel® Premier Support website please perform the following steps:
Please follow these guidelines when you submit a technical issue to Intel
Premier Support:
http://support.intel.com/support/performancetools/libraries/ipp/sb/cs-010663.htm
For product user forum, on-line help and other support information, please visit: http://support.intel.com/support/performancetools/libraries/ipp/
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