文件列表:

mpeg4_encoder\doc (0, 2006-02-22)
mpeg4_encoder\makefile_sample_mpeg4_enc (9091, 2005-09-29)
mpeg4_encoder\src\arm_linux\include\sampdefs.h (3249, 2005-09-29)
mpeg4_encoder\src\arm_linux\include (0, 2006-02-22)
mpeg4_encoder\src\arm_linux\video\mpeg4\encoder\mp4eblck.c (20647, 2005-09-29)
mpeg4_encoder\src\arm_linux\video\mpeg4\encoder\mp4ebuff.c (9959, 2005-09-29)
mpeg4_encoder\src\arm_linux\video\mpeg4\encoder\mp4einit.c (31392, 2005-09-29)
mpeg4_encoder\src\arm_linux\video\mpeg4\encoder\mp4emain.c (11492, 2005-09-29)
mpeg4_encoder\src\arm_linux\video\mpeg4\encoder\mp4emblk.c (21173, 2005-09-29)
mpeg4_encoder\src\arm_linux\video\mpeg4\encoder\mp4esynt.c (14694, 2005-09-29)
mpeg4_encoder\src\arm_linux\video\mpeg4\encoder\mp4etble.c (2577, 2005-09-29)
mpeg4_encoder\src\arm_linux\video\mpeg4\encoder\mp4eutil.c (9838, 2005-09-29)
mpeg4_encoder\src\arm_linux\video\mpeg4\encoder\mp4evops.c (21759, 2005-09-29)
mpeg4_encoder\src\arm_linux\video\mpeg4\encoder (0, 2006-02-22)
mpeg4_encoder\src\arm_linux\video\mpeg4\_include\sampmp4.h (24221, 2005-09-29)
mpeg4_encoder\src\arm_linux\video\mpeg4\_include (0, 2006-02-22)
mpeg4_encoder\src\arm_linux\video\mpeg4 (0, 2006-02-22)
mpeg4_encoder\src\arm_linux\video\_include\sampvc.h (2416, 2005-09-29)
mpeg4_encoder\src\arm_linux\video\_include (0, 2006-02-22)
mpeg4_encoder\src\arm_linux\video (0, 2006-02-22)
mpeg4_encoder\src\arm_linux (0, 2006-02-22)
mpeg4_encoder\src (0, 2006-02-22)
mpeg4_encoder (0, 2006-02-22)

September 7, 2005 Intel(R) Integrated Performance Primitives Version 5.0 MPEG-4 Video Encoder Sample Code for Linux* on Intel(R) Personal Internet Client Architecture Processors ================================================================ CONTENTS: 1. Overview 2. Package Contents 3. Directory Structure and File List 4. System Requirements 5. Installation and Build 6. Running the Software 7. Intel IPP Functional Coverage 8. Key Module Descriptions 9. Known Limitations 10. Technical Support and Feedback 11. License Definition 12. Disclaimer and Legal Information ================================================================ 1. Overview The MPEG-4 video encoder sample code supports a subset of video streams compatible with ISO/IEC 14496-2 (2nd edition 2001-12-01) MPEG-4 simple profile, and does not support Error Resilience, Short Header and Rate Control. The purpose of MPEG- 4 video encoder sample code is to provide an example showing how to use Intel(R) Integrated Performance Primitives (Intel(R) IPP) Video Coding primitives to build up the basic visual tools of an MPEG-4 video encoder, including I-VOP, P-VOP, AC/DC prediction, 4-MV and UMV. Additional information on this software as well as other Intel(R) software performance products is available at http://developer.intel.com/software/products/. ================================================================ 2. Package Contents The MPEG-4 video encoder sample code package contains the following: * Readme file * Makefile * Sample code source files and header files ================================================================ 3. Directory Structure and File List The following files reside in these directories, where ~ is the directory chosen as the root of this sample code package: ~ Root path of Intel(R) IPP 5.0 sample code package makefile_sample_mpeg4_enc Make file for MPEG-4 video encoder sample code ~/doc readme_mpeg4_enc.txt Readme file ~/src/arm_linux/video/mpeg4/encoder MPEG-4 video encoder sample code source file directory mp4emain.c Source file for MPEG-4 video encoder entry function mp4einit.c Source file for encoder initialization functions mp4esynt.c Source file for stream syntax generation functions mp4ebuff.c Source file for stream buffer processing functions mp4evops.c Source file for VOP or frame encoding functions mp4emblk.c Source file for macroblock encoding functions mp4eblck.c Source file for block encoding functions mp4etble.c Source file for constant tables mp4eutil.c Source file for utility functions ~/src/include General header file directory sampdefs.h General header file ~/src/arm_linux/video/_include Video shared header file directory sampvc.h Video shared header file ~/src/arm_linux/video/mpeg4/_include MPEG-4 video encoder and decoder shared header file directory sampmp4.h MPEG-4 video encoder and decoder shared header file ================================================================ 4. System Requirements This sample code is targeted for Intel(R) Personal Internet Client Architecture (PCA) Processors with Intel(R) Wireless MMX(TM) Technology. It requires: Hardware requirements: * Host PC: An Intel(R) Pentium(R) 4 processor 1.5 GHz, with 512 MB RAM, or greater * Target platform: platforms that support Intel PCA Processors with Intel Wireless MMX technology, such as the Intel(R) PXA27x Processor Development Kit Software requirements: * Operating system on host machine: Red Hat* Linux* Release 7.2, or higher version * Development tools: -- iwmmxt_le-gcc 3.3.1 (MontaVista), glibc 2.3.2 and binutils 2.14 20030612 -- Red Hat* RPM version 4.0.3 or higher version * Intel IPP 5.0 for Linux* on Intel PCA Processors with Intel Wireless MMX Technology Image Coding Component Library ================================================================ 5. Installation and Build Extract all files in l_ipp-PCA-MPEG4-encode_*.tgz to a desired folder. Please make sure to preserve the directory structure. The files for this sample are in the ./ipp_sample/PCA/MPEG4-encode/ folder. Follow the steps below to build the MPEG-4 video encoder application. Before you begin, make sure the Intel IPP 5.0 for Linux* on Intel PCA Processors with Intel Wireless MMX Technology has already been installed on the same host machine. 1) Modify makefile_sample_mpeg4_enc to make sure the variable PATH_IPP_ROOT is the current Intel Integrated Performance Primitives installation path. The default installation path should be: PATH_IPP_ROOT=/opt/intel/ipp/5.0/pca_wmmx In the given make file, the path is set the same as user root path: PATH_IPP_ROOT=$(PATH_USR_ROOT) Modify other toolchain paths if necessary in this make file. 2) Make the application with command: make -f makefile_sample_mpeg4_enc ================================================================ 6. Running the Software If successfully built, the executable is generated in path $(PATH_USR_BIN) defined in the make file, with the default name mpeg4enc. The command line format is: mpeg4enc inputfile outputfile [-options] Simply type mpeg4enc to invoke help information. ================================================================ 7. Intel IPP Functional Coverage The MPEG-4 video encoder sample demonstrates how to combine the I-VOP/P-VOP Encoding, Motion Vector Encoding, Motion Compensation, DCT and IDCT, Quantization and Inverse Quantization, VLC Encoding to construct the baseline MPEG-4 video encoder. Correspondingly, the sample incorporates the following Intel IPP Video Coding Domain primitives: Functional Category Primitive Name DCT ippiDCT8x8Fwd_Video_16s_C1 ippiDCT8x8Fwd_Video_8u16s_C1R IDCT ippiDCT8x8Inv_Video_16s_C1 ippiDCT8x8Inv_Video_16s8u_C1R Quantization ippiQuantIntra_MPEG4_16s_I ippiQuantInter_MPEG4_16s_I Inverse Quantization ippiQuantInvIntra_MPEG4_16s_I ippiQuantInvInter_MPEG4_16s_I VLC Encoding ippiEncodeVLCZigzag_IntraDCVLC_MPEG4_16s1u ippiEncodeVLCZigzag_IntraACVLC_MPEG4_16s1u ippiEncodeVLCZigzag_Inter_MPEG4_16s1u Motion Compensation ippiMCBlock_RoundOff_8u ippiMCBlock_RoundOn_8u Motion Estimation ippiSumNorm_VOP_MPEG4_8u16u ippiFindMVpred_MPEG4 ippiMotionEstimation_16x16_SEA ippiComputeTextureErrorBlock_SAD_8u16s Motion Vector Encoding ippiEncodeMV_MPEG4_8u16s Frame Expansion ippiExpandFrame_H263_8u Please refer to the Intel Integrated Performance Primitives on Intel Personal Internet Client Architecture Processors Reference Manual (Version 5.0) for the use of these primitives. ================================================================ 8. Key Module Descriptions Structures: 1) mp4_enc_state Description: MPEG-4 video encoder general state structure, which contains parsed configuration options from users, initialized semantic information on Video Object (VO), Video Object Layer(VOL) and Video Object Plane(VOP) level as well as working buffers. It is used to encode all the MPEG-4 frames successively. 2) mp4_enc_vop_infor Description: MPEG-4 video encoder high-level state structure, which contains the generated information on Video Object Plane, MacroBlock and Block level as well as the working buffer passed from the encoder general state structure. It is used to encode all the Blocks of one individual MPEG-4 frame. Functions: 1) encoder_init_alloc_mpeg4() Location: mp4einit.c Description: MPEG-4 video encoder initialization function. (1) Initializes encoder state structure according to the configuration parameters parsed from the command line and default settings of a baseline encoder. (2) Allocates and initializes its working buffer. Calling Procedure: It's called from the main function before encoding the first frame and calls to get_working_buffer_mpeg4() to allocate encoder working buffer. 2) encode_mpeg4() Location: mp4evops.c Description: MPEG-4 frame encoding function. (1) Determines the coding type of current frame or VOP. (2) Encodes one frame or VOP. (3) Updates encoder general state structure. Calling Procedure: It's called from the main function and calls to encode_ivop_mpeg4() or encode_pvop_mpeg4() to encode frame according to the determined vop coding type. 3) encoder_free_mpeg4() Location: mp4einit.c Description: MPEG-4 video encoder free function. Frees the working buffer of the encoder general state structure. Calling Procedure: It's called from the main function after all the frames have been encoded and does not call to any lower-level functions. 4) encode_ivop_mpeg4() Location: mp4evops.c Description: MPEG-4 IVOP encoding function. (1) Initializes MPEG-4 encoder high-level state structure. (2) Dumps VOP syntax information to the output bitstream. (3) Loops to encode each MacroBlock in the IVOP in zigzag order. Calling Procedure: It's called from encode_mpeg4() if the frame is IVOP and calls to init_vop_enc_infor_mpeg4() to initialize encoder high-level state and encode_intra_mb_mpeg4() to encode each MacroBlock in the IVOP. 5) encode_pvop_mpeg4() Location: mp4evops.c Description: MPEG-4 PVOP encoding function. (1) Initializes MPEG-4 encoder high-level state structure. (2) Dumps VOP syntax information to the output bitstream. (3) Performs motion estimation on the VOP to determine the motion vectors and coding type of each MacroBlock. (4) Loops to encode each MacroBlock in the PVOP in zigzag order. Calling Procedure: It's called from encode_mpeg4() if the frame is PVOP and calls to init_vop_enc_infor_mpeg4() to initialize encoder high-level state and encode_intra_mb_mpeg4() or encoder_inter_mb_mpeg4 to encode each MacroBlock in the PVOP according to its determined coding type. It calls to ippiSumNorm_VOP_MPEG4_8u16u() to compute the summation plane based on blocks, calls to ippiFindMVpred_MPEG4() to find motion vector predictor of each MacroBlock, calls to ippiMotionEstimation_16x16_SEA() to perform Successive Elimination Algorithm for motion estimation. 6) encode_intra_mb_mpeg4() Location: mp4emblk.c Description: MPEG-4 intra Macroblock encoding function. (1) Encodes six blocks texture data and decodes their reconstructed data in the same time, including DCT and IDCT, Quantization and Inverse Quantization of each block in the MacroBlock. (2) Performs AC/DC prediction based on the MacroBlock. (3) Determines the MacroBlock syntax information and dumps them out. (4) VLC encoding of six blocks in the MacroBlock. Calling Procedure: It's called from encode_ivop_mpeg4() or from encode_pvop_mpeg4() if it's an intra MacroBlock. It calls to encode_block_intra_mpeg4() to encode the texture data of each block, calls to acdc_prediction_intra_mb_mpeg4() to perform AC/DC prediction, calls to create_mb_mpeg4() to dump out MacroBlock syntax information, calls to ippiEncodeVLCZigzag_IntraDCVLC_MPEG4_16s1u() or ippiEncodeVLCZigzag_IntraACVLC_MPEG4_16s1u() to process VLC encoding of each block based on the determined VLC method for coding of the block intra DC coefficients. 7) encode_inter_mb_mpeg4() Location: mp4emblk.c Description: MPEG-4 inter MacroBlock encoding function. (1) Looks up motion vectors for chrominance blocks in the MacroBlock. (2) Performs motion compensation to get reference blocks in forward reconstructed plane. (3) Computes the texture errors or residuals of each block and its corresponding reference block. (4) Encodes the texture residuals of each block, including DCT and IDCT, Quantization and Inverse Quantization. (5) Determines the MacroBlock syntax information and dumps it out. If this MacroBlock is determined not to be coded, then step (6) and (7) should be skipped. (6) Encodes the motion vectors of this MacroBlock. (7) VLC encoding of six blocks in the MacroBlock. (8) Computes the reconstructed data of current MacroBlock. Calling Procedure: It's called from encode_pvop_mpeg4() if it is an inter MacroBlock. It calls to lookup_uvmv_mpeg4() to loop up motion vectors for chrominance blocks, calls to ippiMCBlock_RoundOff_8u() or ippiMCBlock_RoundOn_8u() to perform motion compensation according to its rounding type, calls to ippiComputeTextureErrorBlock_SAD_8u16s() to compute the texture errors of each block, calls to encode_block_inter_mpeg4() to encode the texture errors, calls to create_mb_mpeg4() to dump out MacroBlock syntax information, calls to ippiEncodeMV_MPEG4_8u16s() to encode the motion vectors into the bitstream, calls to ippiEncodeVLCZigzag_Inter_MPEG4_16s1u() to process VLC encoding, calls to ippiCopyBlock_8x8_8u() or ippiReconBlock_8x8() to reconstruct the texture data of current MacroBlock. 8) encode_block_inter_mpeg4() Location: mp4eblck.c Description: MPEG-4 inter block encoding function. (1) DCT of the inter block residual texture data (2) Quantization (3) Inverse Quantization (4) IDCT Calling Procedure: It's called from encode_inter_mb_mpeg4(). It calls to ippiDCTFwd_8x8_16s() to perform DCT, calls to ippiQuantInter_MPEG4_16s_I() to perform inter block quantization, calls to ippiQuantInvInter_MPEG4_16s_I() to perform inverse quantization, calls to ippiDCTInv_8x8_16s() to perform IDCT. 9) encode_block_intra_mpeg4() Location: mp4eblck.c Description: MPEG-4 intra block encoding function. (1) DCT of the intra block texture data (2) Quantization (3) Inverse Quantization (4) IDCT Calling Procedure: It's called from encode_intra_mb_mpeg4(). It calls to ippiDCTFwd_8x8_8u16s() to perform DCT, calls to ippiQuantIntra_MPEG4_16s_I() to perform intra block quantization, calls to ippiQuantInvIntra_MPEG4_16s_I() to perform inverse quantization, calls to ippiDCTInv_8x8_16s8u() to perform IDCT. 10)acdc_prediction_intra_mb_mpeg4() Location: mp4eblck.c Description: MPEG-4 intra MacroBlock AC/DC prediction. (1) Determines the AC/DC prediction direction of each block. (2) Calculates the AC prediction coefficients. (3) AC and DC coefficient buffer update. (4) DC prediction. (5) AC prediction if update. Calling Procedure: It's called from encode_intra_mb_mpeg4() and does not call to any lower level functions. ================================================================ 9. Known Limitations This MPEG-4 video encoder sample code is only for demonstration purpose. Its error handling feature is limited. ================================================================ 10. Technical Support and Feedback To receive support or provide feedback for AAC decoder sample code, please refer to the "Technical Support and Feedback" section of the release notes provided in the Intel IPP V5.0 for Linux on Intel PCA Processors with Intel Wireless MMX Technology product installation. ================================================================ 11. License Definition 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 IPP product previously accepted by you. ================================================================ 12. Disclaimer and Legal Information The source code contained or described herein and all documents related to the source code ("Material") are owned by Intel Corporation or its suppliers or licensors. Title to the Material remains with Intel Corporation or its suppliers and licensors. The Material may contain trade secrets and proprietary and confidential information of Intel Corporation and its suppliers and licensors, and is protected by worldwide copyright and trade secret laws and treaty provisions. No part of the Material may be used, copied, reproduced, modified, published, uploaded, posted, transmitted, distributed, or disclosed in any way without Intel(R) prior express written permission. No license under any patent, copyright, trade secret or other intellectual property right is granted to or conferred upon you by disclosure or delivery of the Materials, either expressly, by implication, inducement, estoppel or otherwise. Any license under such intellectual property rights must be express and approved by Intel in writing. Unless otherwise agreed by Intel in writing, you may not remove or alter this notice or any other notice embedded in Materials by Intel or Intel(R) suppliers or licensors in any way. INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL(R) PRODUCTS. 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. The information in this document is subject to change without notice and Intel Corporation assumes no responsibility or liability for any errors or inaccuracies that may appear in this document or any software that may be provided in association with this document. This document and the software described in it are furnished under l ... ...

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