RK3399Pro入门教程（6）硬件编解码器MPP库的使用

yaowei 发表于 2019-4-18 17:17
我也成功用起来了，不止需要gstreamer-rockchip，还需要其他一些库，现在可以解码视频和rtsp摄像头。 ...

大哥！请问要怎么用python通过opencv来控制gstreamer硬解呀，我试了好久还是软解。

请问这是什么问题呢
# ./mpi_dec_test -t 7 -i /userdata/ss.h264 -n 10
mpp[3829]: mpi_dec_utils: cmd parse result:
mpp[3829]: mpi_dec_utils: input  file name: /userdata/ss.h264
mpp[3829]: mpi_dec_utils: output file name:
mpp[3829]: mpi_dec_utils: config file name:
mpp[3829]: mpi_dec_utils: width      :    0
mpp[3829]: mpi_dec_utils: height     :    0
mpp[3829]: mpi_dec_utils: type       : 7
mpp[3829]: mpi_dec_utils: debug flag : 0
mpp[3829]: mpi_dec_utils: max frames : 10
mpp[3829]: mpi_dec_test: mpi_dec_test start
mpp[3829]: mpi_dec_test: input file size 17258813
mpp[3829]: mpi_dec_test: type simple
mpp[3829]: mpp_info: mpp version: unknown mpp version for missing VCS info
mpp[3829]: mpi_dec_test: 0x2c7272c0 mpi_dec_test decoder test start w 0 h 0 type 7
mpp[3829]: mpp_rt: NOT found ion allocator
mpp[3829]: mpp_rt: found drm allocator
mpp[3829]: mpi_dec_test: 0x2c7272c0 decode_get_frame get info changed found
mpp[3829]: mpi_dec_test: 0x2c7272c0 decoder require buffer w:h [1280:720] stride [1280:720] buf_size 1843200
mpp[3829]: mpp_serivce: mpp_service_cmd_send ioctl MPP_IOC_CFG_V1 failed ret -1 errno 12 Cannot allocate memory
mpp[3829]: mpp_serivce: mpp_service_cmd_poll ioctl MPP_IOC_CFG_V1 failed ret -1 errno 5 Input/output error
mpp[3829]: hal_h264d_vdpu34x: vdpu34x_h264d_wait poll cmd failed 5
mpp[3829]: mpi_dec_test: 0x2c7272c0 decode get frame 0 err 1 discard 0
mpp[3829]: mpi_dec_test: 0x2c7272c0 decode get frame 1 err 1 discard 0
mpp[3829]: mpp_serivce: mpp_service_cmd_send ioctl MPP_IOC_CFG_V1 failed ret -1 errno 12 Cannot allocate memory
mpp[3829]: hal_h264d_vdpu34x: vdpu34x_h264d_start send cmd failed 12
mpp[3829]: mpp_serivce: mpp_service_cmd_poll ioctl MPP_IOC_CFG_V1 failed ret -1 errno 5 Input/output error
mpp[3829]: hal_h264d_vdpu34x: vdpu34x_h264d_wait poll cmd failed 5
mpp[3829]: mpi_dec_test: 0x2c7272c0 decode get frame 2 err 1 discard 0
mpp[3829]: mpi_dec_test: 0x2c7272c0 decode get frame 3 err 1 discard 0
mpp[3829]: mpi_dec_test: 0x2c7272c0 decode get frame 4 err 1 discard 0
mpp[3829]: mpi_dec_test: 0x2c7272c0 decode get frame 5 err 1 discard 0
mpp[3829]: mpi_dec_test: 0x2c7272c0 decode get frame 6 err 1 discard 0
mpp[3829]: mpi_dec_test: 0x2c7272c0 decode get frame 7 err 0 discard 1
mpp[3829]: mpi_dec_test: 0x2c7272c0 decode get frame 8 err 1 discard 0
mpp[3829]: mpi_dec_test: 0x2c7272c0 decode get frame 9 err 0 discard 1
mpp[3829]: mpi_dec_test: 0x2c7272c0 reach max frame number 10
mpp[3829]: mpi_dec_test: 0x2c7272c0 input 19 pkt output 11 frm decode 11 frames
mpp[3829]: mpi_dec_test: test success max memory 7.03 MB

mpp能用来解音频吗，比如aac

848451399 发表于 2022-3-18 14:25
mpp能用来解音频吗，比如aac

不能           

MPP兼容的ffmpeg源码有吗

你好，我使用mpp_linux_cpp-master测试硬解码，发现解码出来的图像的上半部分是正常的，下半部分都是绿色的，buffer = mpp_frame_get_buffer(*srcFrm);把buffer的的值都写出来，发现y通道，后面很多行的值都是0，这个问题出现在哪呢？ 2K正常，解码4K的就有这个问题！

群主大神，咨询一下，MPP对YUV进行编码为H26X之后，怎么获取编码之后的帧类型啊？ 也就是怎么判断当前packet是I帧还是P帧，有接口吗？

有最新的MPP开发参考吗，VP8的编码没例子

dnf 怎么安装呢，那个wiki打不开了

jtcjump 发表于 2022-6-28 16:48
dnf 怎么安装呢，那个wiki打不开了

debian是用apt 。
官方目前只维护debian了，不是debian请先烧写官方最新固件