DSP

DM8168添加DSP音频编解码算法--集成现有voice或audio codec

2019-07-13 10:42发布

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本文根据“How to integrate audio/voice in RPE in EZSDK.pdf”整理，建议读者直接下载，参考原文件。原文件下载链接： http://download.csdn.net/detail/guo8113/8122945
 ps：本文只是参考文档进行定制补充，但目前笔者没有完成移植，仅供参考。转载请注明：http://blog.csdn.net/guo8113/article/details/40820897

DVR_RDK RPE添加其他音频编码

DM8168中音频算法（DVR-RDK中已经集成了aac的enc、dec）采用RPE（远程程序调用）的机制，该机制的介绍可以参考ti_tools/rpe中的文档，或者参考笔者的博客与论文。

1.更新构建环境变量

/remote-processor-execute/makerules/env.mk L42: ##################################################### # Codecs Paths #####################################################   # AACDEC - AAC Decoder aaclcdec_PATH =$(EXTERNAL_SW_ROOT)/c674x-aaclcdec_01_41_00_00_elf aaclcdec_INCLUDE =$(aaclcdec_PATH)/packages   # AACENC - AAC Encoder aaclcenc_PATH =$(EXTERNAL_SW_ROOT)/c674x_aaclcenc_01_00_01_00_elf aaclcenc_INCLUDE =$(aaclcenc_PATH)/packages # # : Add more codec pathshere. #

2.添加codec到编译列表：

ti_tools/rpe/remote-processor-execute/src/config/codecs.mk INCLUDE_CODEC_INTERFACES = aaclcdecaaclcenc

3.更新client配置文件

ti_tools/rpe/remote-processor-execute/src/config/client_config.c /* Get structure definitions for AACLCAudio Decoder Interface */ #include #include 由于已经集成AAC enc和dec所以使用XDM接口的类已经定义了各一个，如果要同时运行其他codec，可能还需要进行添加。

4.更新server配置文件

ti_tools/rpe/remote-processor-execute/src/config/server_config_c67x.c （1）模仿const XdmServer_ServerConfig TI_AACDEC_serverConfig{}编写自己的classconfigratiion   （2）更新： const Rpe_ServerConfig*Rpe_serverConfigArray[] = {    (const Rpe_ServerConfig *) & TI_AACDEC_serverConfig,    (const Rpe_ServerConfig *) & TI_AACENC_serverConfig,    & Rpe_endServerConfig }; 当然也要包含必要的头文件。

5.修改/dvr_rdk/rules.make

L101行： # Audio framework (RPE) and Codecs rpe_PATH        :=$(TI_SW_ROOT)/rpe/remote-processor-execute aaclcdec_PATH    :=$(TI_SW_ROOT)/codecs/c674x_aaclcdec_01_41_00_00_elf aaclcenc_PATH    :=$(TI_SW_ROOT)/codecs/c674x_aaclcenc_01_00_01_00_elf_patched   L301: RPE_BUILD_VARS =ipc_PATH="${ipc_PATH}"          bios_PATH="${bios_PATH}"          xdc_PATH="${xdc_PATH}"          xdais_PATH="${xdais_PATH}"          syslink_PATH="${syslink_PATH}"          kernel_PATH="${KERNELDIR}"          CODESOURCERY_PATH="${CODEGEN_PATH_A8}"          CGT_ARM_PREFIX="${CSTOOL_PREFIX}"          CODEGEN_PATH_DSP="${CODEGEN_PATH_DSP}"          CODEGEN_PATH_DSPELF="${CODEGEN_PATH_DSP}"          ROOTDIR="${rpe_PATH}"          aaclcdec_PATH="${aaclcdec_PATH}"          aaclcenc_PATH="${aaclcenc_PATH}"   L373: export aaclcdec_PATH    export aaclcenc_PATH   

6.添加库

dvr_rdk/makerules/rules_c674.mk L192: LIB_PATHS += $(RTSLIB_PATH)               $(aaclcdec_PATH)/packages/ti/sdo/codecs/aaclcdec/lib/aacdec_tii_lc_elf.l64P             $(aaclcenc_PATH)/packages/ti/sdo/codecs/aaclcenc/lib/mp4aacenc_tij_lc_elf.l67 添加包含目录：dvr_rdk/makerules/env.mk aaclcdec_INCLUDE =$(aaclcdec_PATH)/packages aaclcenc_INCLUDE =$(aaclcenc_PATH)/packages

7.在ARM侧指定RPE的编译包含路径

dvr_rdk/makerules/includes_a8.mk L18： RPE_INC=-I$(rpe_PATH)/include-I$(rpe_PATH)/src/include -I$(aaclcdec_PATH)/packages-I$(aaclcenc_PATH)/packages -I$(xdais_PATH)/packages  

8. DVRRDK_03.00.00.00/dvr_rdk/mcfw/src_bios6/BIOS_c6xdsp.cfg不确定

Program.sectMap["aacEncProgram"]              = "DSP_CODE_MEM";

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