CN105786479B - A kind of synthesis EMS memory management process and system - Google Patents
A kind of synthesis EMS memory management process and system Download PDFInfo
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- CN105786479B CN105786479B CN201410836471.6A CN201410836471A CN105786479B CN 105786479 B CN105786479 B CN 105786479B CN 201410836471 A CN201410836471 A CN 201410836471A CN 105786479 B CN105786479 B CN 105786479B
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Abstract
The present invention provides a kind of synthesis EMS memory management process and system, is applied to Android platform, comprising: eglSwapBuffersVIV interface is added in EGL；When carrying out 2D synthesis in SurfaceFlinger, the eglSwapBuffersVIV interface is called；When carrying out 3D synthesis in SurfaceFlinger, eglSwapBuffers interface is called.The present invention has invoked different interfaces when carrying out different synthesis, avoids image entanglement problem when toggling.
Description
Technical field
The present invention relates to communication technique field, in particular to a kind of synthesis EMS memory management process and system.
Background technique
Intelligent mobile phone terminal field needs to close the content of multiple windows according to the position of window, size, lamination order
As piece image, it is saved in frame buffer zone, LCD is given and shows.This synthetic work is usually to lean on GPU (image processor) complete
At, but in order to reduce power consumption, cruise duration is improved, 2D chip can be added.The synthesis of 3D chip is not needed most of the time, just
GPU can be allowed to rest, change and 2D chip accelerator is allowed to complete synthetic work.Thus it is related to buffering frame when 2D and 3D synthesis switching
The problem of management in area.
Referring to FIG. 1, it is the composition sequence figure of the primary platform of Android.As shown in Figure 1, SurfaceFlinger is
The higher management of entire Android display system, controls the superposition of each window, GPU or 2D accelerator is called to be synthesized.
EGL is a set of standard API relevant to window operation in OpenGL ES.BufferQueue is buffer queue, for picture streams
Freely, three frame buffers are usually contained.HWComposer is hardware synthesizer, is in fact exactly the encapsulation to 2D accelerator.
Framebuffer_device_t is frame buffer zone equipment, and frame buffer zone feeding LCD is responsible for show.
It can be seen that SurfaceFlinger after each window for being ready to synthesis from the timing diagram of Fig. 1, just call
EGL standard interface eglSwapBuffers.In this interface, the dequeueBuffer function of BufferQueue is called first
A piece of frame buffer zone is obtained, then starts GPU and the content of each window is synthesized on this piece frame buffer zone, then call
The queueBuffer function of BufferQueue.BufferQueue will call the fbPost function of HWComposer, this piece
HWComposer is given in synthetic frame buffer zone, the destination buffer as 2D accelerator.Finally, SurfaceFlinger tune
With the commit function of HWComposer, HWComposer will call the interface fb_post of framebuffer_device_t,
Framebuffer_device_t send destination buffer into LCD is given to show.
It is to be synthesized for 3D, and 2D is synthesized above, SurfaceFlinger will not call EGL standard interface
EglSwapBuffers, but call directly the commit function of HWComposer.HWComposer will start 2D accelerator into
Row synthesis, finally can also call the interface fb_post of framebuffer_device_t, synthetic destination buffer is given
Framebuffer_device_t is sent into LCD and shows.
But synthesized by the above method, it has the following deficiencies:
1) after 3D synthesis is switched to 2D synthesis, frame buffer zone is no longer rotated.That is, what 2D accelerator was synthesizing
Destination buffer is exactly the frame buffer zone that LCD is being shown, this will lead to image entanglement.
If 2) 2D accelerator is allowed to manage frame buffer zone alone, the rotation of frame buffer zone is realized, be that can guarantee that 2D is synthesized
When destination buffer be not frame buffer zone that LCD is being shown.But when 2D synthesis switches back into 3D synthesis, GPU is not aware that
Frame buffer zone is rotated, so the destination buffer of 3D synthesis may be exactly the frame buffer zone that LCD is being shown.But,
During this only occurs in switching, after EGL has rotated a frame buffer zone, normal condition has been entered.But it is of short duration
Hua Ping also will affect user experience.
Summary of the invention
The purpose of the present invention is to provide a kind of synthesis EMS memory management process and systems, to solve existing synthesis memory method
Mismanagement and the problem of bring image entanglement.
In order to solve the above technical problems, the present invention provides a kind of synthesis EMS memory management process, it is applied to Android platform,
Include:
A first interface is added in EGL；
When carrying out 2D synthesis in SurfaceFlinger, the first interface is called；In SurfaceFlinger into
When row 3D is synthesized, a second interface is called.
Further, described that 2D synthesis is carried out in SurfaceFlinger in the synthesis EMS memory management process
When, the step of calling the first interface includes:
The dequeueBuffer function of BufferQueue is called to obtain a piece of frame buffer zone；
The queueBuffer function for calling BufferQueue makes BufferQueue call the fbPost of HWComposer
Function gives HWComposer the piece frame buffer zone, the destination buffer as 2D accelerator；
SurfaceFlinger calls the commit function of HWComposer, and HWComposer starting 2D accelerator is closed
At；
The interface fb_post for calling framebuffer_device_t, gives synthetic destination buffer
Framebuffer_device_t is sent into liquid crystal display and shows.
Further, described that 3D synthesis is carried out in SurfaceFlinger in the synthesis EMS memory management process
When, call a second interface the step of include:
The dequeueBuffer function of BufferQueue is called to obtain a piece of frame buffer zone；
Starting image processor is synthesized to the content of each window on the piece frame buffer zone；
The queueBuffer function for calling BufferQueue makes BufferQueue call the fbPost of HWComposer
Function gives HWComposer the synthetic frame buffer zone, the destination buffer as 2D accelerator；
SurfaceFlinger calls the commit function of HWComposer, and HWComposer is made to call framebuffer_
The interface fb_post of device_t gives framebuffer_device_t the destination buffer and is sent into liquid crystal display
Display.
Further, in the synthesis EMS memory management process, the first interface connects for eglSwapBuffersVIV
Mouthful, the second interface is eglSwapBuffers interface.
Correspondingly, being applied to Android platform the present invention also provides a kind of synthesis internal storage management system, comprising:
Adding module, for adding a first interface in EGL；
Calling module calls the first interface when for carrying out 2D synthesis in SurfaceFlinger；?
When carrying out 3D synthesis in SurfaceFlinger, a second interface is called.
Further, in the synthesis internal storage management system, in calling module, in SurfaceFlinger into
When the first interface is called in row 2D synthesis, further includes:
First calling module, for calling the dequeueBuffer function of BufferQueue to obtain a piece of frame buffer zone；
Second calling module calls BufferQueue for calling the queueBuffer function of BufferQueue
The fbPost function of HWComposer gives HWComposer the piece frame buffer zone, the destination buffer as 2D accelerator；
Third calling module calls the commit function of HWComposer, HWComposer for SurfaceFlinger
Starting 2D accelerator is synthesized；
4th calling module, for calling the interface fb_post of framebuffer_device_t, synthetic target
It gives framebuffer_device_t feeding liquid crystal display and shows in buffer area.
Further, in the synthesis internal storage management system, in calling module, in SurfaceFlinger into
When a second interface is called in row 3D synthesis, further includes:
5th calling module, for calling the dequeueBuffer function of BufferQueue to obtain a piece of frame buffer zone；
The content of each window is synthesized to the piece frame buffer zone for starting image processor by synthesis module；
6th calling module calls BufferQueue for calling the queueBuffer function of BufferQueue
The fbPost function of HWComposer gives HWComposer the synthetic frame buffer zone, the mesh as 2D accelerator
Mark buffer area；
7th calling module calls the commit function of HWComposer for SurfaceFlinger, makes
HWComposer calls the interface fb_post of framebuffer_device_t, and the destination buffer is given
Framebuffer_device_t is sent into liquid crystal display and shows.
Further, in the synthesis internal storage management system, the first interface connects for eglSwapBuffersVIV
Mouthful, the second interface is eglSwapBuffers interface.
The present invention has invoked different interfaces when carrying out different synthesis, avoids image entanglement when toggling
Problem.In addition, not starting GPU in 2D synthesis, the movement for carrying out 3D synthesis is eliminated, the function of rotation frame buffer zone is only retained
Can, maintain low-power consumption；Further, 2D accelerator design is simplified, directly uses the frame buffer zone for being transmitted through and as target
Buffer area, without managing frame buffer zone alone；Further, unified by SurfaceFlinger triggering frame buffer zone wheel
Turn, do not destroy primary framework, code structure is clear, is conducive to maintenance.
Detailed description of the invention
Fig. 1 is the synthesis timing diagram of the primary platform of existing Android；
Fig. 2 is the synthesis EMS memory management process of the embodiment of the present invention and the timing diagram of system.
Specific embodiment
Synthesis EMS memory management process proposed by the present invention and system are made below in conjunction with the drawings and specific embodiments further
It is described in detail.According to following explanation and claims, advantages and features of the invention will be become apparent from.It should be noted that attached drawing
It is all made of very simplified form and uses non-accurate ratio, only to convenient, lucidly the aid illustration present invention is implemented
The purpose of example.
Referring to FIG. 2, it is the synthesis EMS memory management process of the embodiment of the present invention and the timing diagram of system.The present invention provides
A kind of synthesis EMS memory management process is applied to Android platform, specifically includes the following steps:
S100: adding a first interface in EGL, and in the present embodiment, name first interface is
EglSwapBuffersVIV interface, its function is similar to eglSwapBuffersVIV interface, is to synthesize in subsequent 2D
When call.
S200: when carrying out 2D synthesis in SurfaceFlinger, the eglSwapBuffersVIV interface is called；?
When carrying out 3D synthesis in SurfaceFlinger, a second interface is called, in the present embodiment, i.e. calling eglSwapBuffers
Interface.
2D synthesis is carried out in SurfaceFlinger to call first when calling the eglSwapBuffersVIV interface
The dequeueBuffer function of BufferQueue obtains a piece of frame buffer zone；Secondly, calling BufferQueue's
QueueBuffer function makes BufferQueue call the fbPost function of HWComposer, which is given
HWComposer, the destination buffer as 2D accelerator；Then SurfaceFlinger calls the commit of HWComposer
Function, HWComposer starting 2D accelerator are synthesized；Finally, calling the interface fb_ of framebuffer_device_t
Post gives framebuffer_device_t synthetic destination buffer and is sent into liquid crystal display (LCD) display.
3D synthesis is carried out in SurfaceFlinger to call first when calling the eglSwapBuffers interface
The dequeueBuffer function of BufferQueue obtains a piece of frame buffer zone；Secondly starting image processor (GPU) is each
The content of window is synthesized on the piece frame buffer zone；The queueBuffer function for then calling BufferQueue, makes
BufferQueue calls the fbPost function of HWComposer, gives HWComposer the synthetic frame buffer zone, makees
For the destination buffer of 2D accelerator；Finally, SurfaceFlinger calls the commit function of HWComposer, make
HWComposer calls the interface fb_post of framebuffer_device_t, and the destination buffer is given
Framebuffer_device_t is sent into liquid crystal display (LCD) display.
Correspondingly, being applied to Android platform the present invention also provides a kind of synthesis internal storage management system, comprising:
Adding module, for adding a first interface in EGL, in the present embodiment, name first interface is
EglSwapBuffersVIV interface；And
Calling module calls the eglSwapBuffersVIV when for carrying out 2D synthesis in SurfaceFlinger
Interface；When carrying out 3D synthesis in SurfaceFlinger, a second interface is called to call in the present embodiment
EglSwapBuffers interface.
Specifically, it in calling module, is carried out in SurfaceFlinger described in 2D synthesis calling
When eglSwapBuffersVIV interface, further includes:
First calling module, for calling the dequeueBuffer function of BufferQueue to obtain a piece of frame buffer zone；
Second calling module calls BufferQueue for calling the queueBuffer function of BufferQueue
The fbPost function of HWComposer gives HWComposer the piece frame buffer zone, the destination buffer as 2D accelerator；
Third calling module calls the commit function of HWComposer, HWComposer for SurfaceFlinger
Starting 2D accelerator is synthesized；
4th calling module, for calling the interface fb_post of framebuffer_device_t, synthetic target
It gives framebuffer_device_t feeding liquid crystal display and shows in buffer area.
Further, it in calling module, is carried out in SurfaceFlinger described in 3D synthesis calling
When eglSwapBuffers interface, further includes:
5th calling module, for calling the dequeueBuffer function of BufferQueue to obtain a piece of frame buffer zone；
The content of each window is synthesized to the piece frame buffer zone for starting image processor by synthesis module；
6th calling module calls BufferQueue for calling the queueBuffer function of BufferQueue
The fbPost function of HWComposer gives HWComposer the synthetic frame buffer zone, the mesh as 2D accelerator
Mark buffer area；
7th calling module calls the commit function of HWComposer for SurfaceFlinger, makes
HWComposer calls the interface fb_post of framebuffer_device_t, and the destination buffer is given
Framebuffer_device_t is sent into liquid crystal display and shows.
Base this, the present invention has invoked different interfaces when carrying out different synthesis, avoids figure when toggling
As entanglement problem.In addition, not starting GPU in 2D synthesis, the movement for carrying out 3D synthesis is eliminated, only retains rotation frame buffer zone
Function, maintain low-power consumption；Further, simplify 2D accelerator design, directly use be transmitted through frame buffer zone as
Destination buffer, without managing frame buffer zone alone；Further, unified to be buffered by SurfaceFlinger trigger frame
Area's rotation, does not destroy primary framework, and code structure is clear, is conducive to maintenance.
Foregoing description is only the description to present pre-ferred embodiments, not to any restriction of the scope of the invention, this hair
Any change, the modification that the those of ordinary skill in bright field does according to the disclosure above content, belong to the protection of claims
Range.
Claims (6)
1. a kind of synthesis EMS memory management process is applied to Android platform characterized by comprising
A first interface is added in EGL；
When carrying out 2D synthesis in SurfaceFlinger, the first interface is called；3D is carried out in SurfaceFlinger
When synthesis, a second interface is called；
Described when carrying out 2D synthesis in SurfaceFlinger, the step of calling the first interface, includes:
The dequeueBuffer function of BufferQueue is called to obtain a piece of frame buffer zone；
The queueBuffer function for calling BufferQueue makes BufferQueue call the fbPost function of HWComposer,
HWComposer is given the piece frame buffer zone, the destination buffer as 2D accelerator；
SurfaceFlinger calls the commit function of HWComposer, and HWComposer starting 2D accelerator is synthesized；
The interface fb_post for calling framebuffer_device_t, gives synthetic destination buffer
Framebuffer_device_t is sent into display and shows.
2. synthesis EMS memory management process as described in claim 1, which is characterized in that described to be carried out in SurfaceFlinger
When 3D is synthesized, the step of calling the second interface, includes:
The dequeueBuffer function of BufferQueue is called to obtain a piece of frame buffer zone；
Starting image processor is synthesized to the content of each window on the piece frame buffer zone, obtains synthetic frame buffer zone；
The queueBuffer function for calling BufferQueue makes BufferQueue call the fbPost function of HWComposer,
HWComposer is given the synthetic frame buffer zone, the destination buffer as 2D accelerator；
SurfaceFlinger calls the commit function of HWComposer, and HWComposer is made to call framebuffer_
The interface fb_post of device_t gives framebuffer_device_t the destination buffer and is sent into liquid crystal display
Display.
3. synthesis EMS memory management process as described in claim 1, which is characterized in that the first interface is
EglSwapBuffersVIV interface, the second interface are eglSwapBuffers interface.
4. a kind of synthesis internal storage management system is applied to Android platform characterized by comprising
Adding module, for adding a first interface in EGL；
Calling module calls the first interface when for carrying out 2D synthesis in SurfaceFlinger；?
When carrying out 3D synthesis in SurfaceFlinger, a second interface is called；
In the calling module, when carrying out the 2D synthesis calling first interface in SurfaceFlinger, further includes:
First calling module, for calling the dequeueBuffer function of BufferQueue to obtain a piece of frame buffer zone；
Second calling module calls BufferQueue for calling the queueBuffer function of BufferQueue
The fbPost function of HWComposer gives HWComposer the piece frame buffer zone, the destination buffer as 2D accelerator；
Third calling module, the commit function of HWCompose is called for SurfaceFlinge, and HWComposer starts 2D
Accelerator is synthesized；
4th calling module, for calling the interface fb_post of framebuffer_device_t, synthetic Target buffer
It gives framebuffer_device_t feeding liquid crystal display and shows in area.
5. synthesis internal storage management system as claimed in claim 4, which is characterized in that in calling module,
When carrying out 3D synthesis one second interface of calling in SurfaceFlinger, further includes:
5th calling module, for calling the dequeueBuffer function of BufferQueue to obtain a piece of frame buffer zone；
The content of each window is synthesized to the piece frame buffer zone for starting image processor, is synthesized by synthesis module
Good frame buffer zone；
6th calling module calls BufferQueue for calling the queueBuffer function of BufferQueue
The fbPost function of HWComposer gives HWComposer the synthetic frame buffer zone, the mesh as 2D accelerator
Mark buffer area；
7th calling module calls the commit function of HWComposer for SurfaceFlinger, makes HWComposer tune
With the interface fb_post of framebuffer_device_t, framebuffer_device_t is given the destination buffer
Liquid crystal display is sent into show.
6. synthesis internal storage management system as claimed in claim 4, which is characterized in that the first interface is
EglSwapBuffersVIV interface, the second interface are eglSwapBuffers interface.
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| CN117369936B (en) * | 2023-12-04 | 2024-03-08 | 武汉凌久微电子有限公司 | Display content rendering method and rendering system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8069450B2 (en) * | 2003-01-27 | 2011-11-29 | Hewlett-Packard Development Company, L.P. | Computer operating system data management |
| CN103106058A (en) * | 2013-01-25 | 2013-05-15 | Tcl集团股份有限公司 | Double-screen display method and intelligent display terminal based on android platform |
| CN103646638A (en) * | 2013-12-25 | 2014-03-19 | 厦门雅迅网络股份有限公司 | Android platform based double-screen display method |
-
2014
- 2014-12-23 CN CN201410836471.6A patent/CN105786479B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8069450B2 (en) * | 2003-01-27 | 2011-11-29 | Hewlett-Packard Development Company, L.P. | Computer operating system data management |
| CN103106058A (en) * | 2013-01-25 | 2013-05-15 | Tcl集团股份有限公司 | Double-screen display method and intelligent display terminal based on android platform |
| CN103646638A (en) * | 2013-12-25 | 2014-03-19 | 厦门雅迅网络股份有限公司 | Android platform based double-screen display method |
Non-Patent Citations (1)
| Title |
|---|
| "Android显示服务器——SurfaceFlinger研究";杨倩 等;《计算机应用与软件》;20140630;第1-3页 |
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Application publication date: 20160720 Assignee: Shanghai Li Ke Semiconductor Technology Co., Ltd. Assignor: Leadcore Technology Co., Ltd. Contract record no.: 2018990000159 Denomination of invention: Synthesis memory management method and system License type: Common License Record date: 20180615 |
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