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[readme]: update readme.txt

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git-svn-id: https://10.10.10.66:8443/svn/MediaProcessPlatform/trunk/mpp@909 6e48237b-75ef-9749-8fc9-41990f28c85a
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ChenHengming 2016-06-13 10:07:15 +00:00
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@ -38,8 +38,6 @@ NOTE:
|
|----- inc header file for external usage, including platform header and mpi header
|
|----- mpi Media Process Interface: the api function implement in public (vpu_api layer)
|
|----- mpp Media Process Platform : mpi function private implement and mpp infrastructure (vpu_api private layer)
| |
| |----- common video codec protocol syntax interface for both codec parser and hal
@ -112,7 +110,7 @@ NOTE:
|
|----- osal Operation System Abstract Layer: abstract layer for different operation system
| |
| |----- mem mpi memory subsystem for hardware
| |----- mem mpi memory subsystem for hardware
| |
| |----- android google's android
| |
@ -129,26 +127,26 @@ NOTE:
Here is the mpp implement overall framework:
+-------------------------+ +--------+
| | | |
| MPI / MPP | | |
| buffer queue manage | | |
| | | |
+-------------------------+ | |
| |
+-------------------------+ | |
| | | |
| codec | | OSAL |
| decoder / encoder | | |
| | | |
+-------------------------+ | |
| |
+-----------+ +-----------+ | |
| | | | | |
| parser | | HAL | | |
| recoder | | reg_gen | | |
| | | | | |
+-----------+ +-----------+ +--------+
+-------------------------+ +--------+
| | | |
| MPI / MPP | | |
| buffer queue manage | | |
| | | |
+-------------------------+ | |
| |
+-------------------------+ | |
| | | |
| codec | | OSAL |
| decoder / encoder | | |
| | | |
+-------------------------+ | |
| |
+-----------+ +-----------+ | |
| | | | | |
| parser | | HAL | | |
| recoder | | reg_gen | | |
| | | | | |
+-----------+ +-----------+ +--------+
Here is the Media Process Interface hierarchical structure
@ -156,34 +154,34 @@ MpiPacket and MpiFrame is the stream I/O data structure.
And MpiBuffer encapsulates different buffer implement like Linux's dma-buf and Android's ion.
This part is learned from ffmpeg.
+-------------------+
| |
| MPI |
| |
+---------+---------+
|
|
v
+---------+---------+
| |
+---+ ctx +---+
| | | |
| +-------------------+ |
| |
v v
+-------+-------+ +-------+-------+
| | | |
| packet | | frame |
| | | |
+---------------+ +-------+-------+
|
|
v
+-------+-------+
| |
| buffer |
| |
+---------------+
+-------------------+
| |
| MPI |
| |
+---------+---------+
|
|
v
+---------+---------+
| |
+---+ ctx +---+
| | | |
| +-------------------+ |
| |
v v
+-------+-------+ +-------+-------+
| | | |
| packet | | frame |
| | | |
+---------------+ +-------+-------+
| |
| |
| |
| +---------------+ |
| | | |
+---->+ buffer +<----+
| |
+---------------+