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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 any time, 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.
G.729/A/B/D/E/I are international standards promoted by ITU-T (http://www.itu.int/publications/itut.html) and other organizations. Implementations of these standards, or the standard enabled platforms may require licenses from various entities, including Intel Corporation.
This sample is is fully compliant with the ITU-T G.729 Recommendation and Annexes A, B, D and E. The G.729 sample has been implemented using the Intel® IPP Speech Coding functions.
Each of two samples is a command line based application which processes a data given by single input file and stores result into output file. The encode sample consumes 16bit 8KHz raw PCM data, produces compressed bitstream which is stored then into output file in conventional test vector format. The decode sample consumes such a file contains bitstream data, extracts a bitstream frames out, decompress them and stores it in file as 16bit 8KHz raw PCM 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. Sample is targeted to demonstrate MT safety of a codec.
The Intel® IPP G.729 Sample for Linux* package contains the following:
./ipp_sample/speech-coding/ | |
ipplic.htm |
End User License Agreement |
support.txt | Contains information for technical support |
./ipp_sample/speech-coding/G729/ | |
Makefile | G.729 Sample Makefile |
build32.sh | Shell script for building the project for IA32 |
buildem64t.sh | Shell script for building the project for Intel Xeon processors with Intel EM64T |
linux32.ini, lem64t.ini | Include files for Makefile |
readme.htm | This file |
./ipp_sample/speech-coding/G729/api/ | |
decg729.c | Functions for decoding speech |
encg729.c | Functions for encoding speech |
owng729.c | Auxiliary functions |
owng729.h | Coder constants, types and inner functions definition header file |
scratchmem.h | Local memory definition header file |
./ipp_sample/speech-coding/G729/include/ | |
g729api.h | API header file |
./ipp_sample/speech-coding/G729/samples/ | |
g729decoder.c | Main source file for decoder |
g729decoder.h | Main header file for decoder |
g729encoder.c | Main source file for encoder |
g729encoder.h | Main header file for encoder |
./ipp_sample/speech-coding/G729/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/G729/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/G729/vm/include/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 G.729 sample will be found in the ./ipp_sample/speech-coding/G729/ folder.
Verify that the IPPROOT environment variables contain the path where the IPP package is installed.
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 G.729 encoder samples, type:
To run one of the G.729 encoder sample, type:
encoder729 [options] <inPCMFile> <outBitstreamTestFile>
Encoder option list:
-r<mode> <mode>: A - specify G.729 Annex A encoder, D - Annex D, E - Annex E, default G.729 main body encoder.
-r<filename> Bit rates given by file on per frame basis. (G.729 main body, Annex D or Annex E)
-v
Voice Activity Detection enabled (VAD). Default: VAD disabled.
-n
output additional information.
-c
write to codecspeed.csv file information about encoder 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 8 KHz PCM to encode,
<outBitstreamTestFile> - output file, contains the encoded bit-stream in G.729 test vectors format.
Note: if repeater is specified (-s option) only the result of last encoding will be written into output file.
To run one of the G.729 decoder sample, type:
decoder729 [options] <inBitstreamTestFile> <outPCMFile>
Decoder option list:
-r<mode> mode: A - specify G.729 Annex A decoder, other modes are bit-stream controlled (either G.729 main body or annexes D or E bit-stream types).
See note below about the format of the bit-streams.
-n option
reports.
-c write to codecspeed.csv file information about coder
performance.
-s <rep> repeater, how many times input file shall be decoded without
reset of decoder, default: <rep>=1
-t <num> number of threads to perform the same decoding operation ,
default: <num>=1.
<inBitstreamTestFile> - input file contains bit-stream to decode,
<outPCMFile> - output file, to write the decoded 16-bit 8 KHz PCM.
if repeater is specified (-s option) only the result of last encoding will be written into output file.
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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