osd_display
所属分类：Linux/Unix编程
开发工具：Unix_Linux
文件大小：3687KB
下载次数：65
上传日期：2008-12-01 18:10:32
上 传 者：
zhangguoliang
说明： 基于GM8180的OSD源代码.从SDK包中挑出来的,是很不错的资料.
(GM8180 the OSD based on the source code. From the SDK package singled out is very good information.)
文件列表:
osd_display_cbycry\CVS\Entries (215, 2008-05-04)
osd_display_cbycry\CVS\Repository (43, 2008-05-04)
osd_display_cbycry\CVS\Root (45, 2008-05-04)
osd_display_cbycry\pattern\display_cbycry_0.yuv (691200, 2007-10-30)
osd_display_cbycry\pattern\display_cbycry_1.yuv (691200, 2007-10-30)
osd_display_cbycry\pattern\display_cbycry_10.yuv (691200, 2007-10-30)
osd_display_cbycry\pattern\display_cbycry_2.yuv (691200, 2007-10-30)
osd_display_cbycry\pattern\display_cbycry_3.yuv (691200, 2007-10-30)
osd_display_cbycry\pattern\display_cbycry_4.yuv (691200, 2007-10-30)
osd_display_cbycry\pattern\display_cbycry_5.yuv (691200, 2007-10-30)
osd_display_cbycry\pattern\display_cbycry_6.yuv (691200, 2007-10-30)
osd_display_cbycry\pattern\display_cbycry_7.yuv (691200, 2007-10-30)
osd_display_cbycry\pattern\display_cbycry_8.yuv (691200, 2007-10-30)
osd_display_cbycry\pattern\display_cbycry_9.yuv (691200, 2007-10-30)
osd_display_cbycry\pattern\welcome_256x64_cbycry.yuv (32768, 2007-10-30)
osd_display_cbycry\Makefile (94, 2007-10-30)
osd_display_cbycry\mp4vosd.h (5247, 2007-10-30)
osd_display_cbycry\osd_display.c (10983, 2007-10-30)
osd_display_cbycry\portab.h (2912, 2007-10-30)
osd_display_cbycry\CVS (0, 2008-04-14)
osd_display_cbycry\pattern (0, 2007-11-20)
osd_display_cbycry (0, 2007-11-20)
osd_display_cbycry\pattern\CVS\Root (45, 2008-05-04)
osd_display_cbycry\pattern\CVS\Repository (51, 2008-05-04)
osd_display_cbycry\pattern\CVS\Entries (680, 2008-05-04)
osd_display_cbycry\CVS\Entries.Log (16, 2008-05-04)
osd_display_cbycry\pattern\CVS (0, 2008-04-14)
Sample Code Description
========================
. This sample is running on GM8180 Platform.
. This 'osd_display' sample will do alpha blending of user-specifed image with
background image and display the result image to 720x480 LCD/TV. Both
user-specified and background image must be in packed CbYCrY 422 image format.
Please put 'display_cbycry_*.yuv' and 'welcome_256x***_cbycry.yuv.yuv' in the
same directory.
This sample uses 'display_cbycry_*.yuv' as background image and 'welcome_256x***_cbycry.yuv.yuv'
as overlay image. There is one precompiled OSD driver called 'fmpeg4_osd_drv.ko' and
precompiled sample application called 'osd_display' for user's convenience in
the 'pattern' directory.
. To see the OSD effect, just type the following commands in the console :
Make sure you'are not using MPEG4 engine:
#rmmod fmpeg4_drv
#rmmod fmjpeg_drv
#insmod fmpeg4_osd_drv.ko
Make sure the device node is created:
#mknod /dev/fosd c 10 24
Run the sample and display in TVE, please put the pattern (display*.yuv) in the same directory.
#./osd_display -s welcome_256x***_cbycry.yuv -ws 256 -hs *** -ulx 32 -uly 32 -alpha 128 -f 4
And it will display the background image with 'welcome' logo alpha blended on TV or LCD.
Overlay Performance
========================
- CbYCrY performace evaluated by ffplay (decoding a .avi file with 720x480 resolution)
- one overlay image 176x144 : 30.47 (frames/per sec)
- one overlay image 352x288 : 30.2 (frames/per sec)
- one overlay image 480x480 : 20.35 (frames/per sec)
- one overlay image ***0x480 : 1***7 (frames/per sec)
- two overlay images 176x144 : 30.61(frames/per sec)
- two overlay images 352x288 : 21.76 (frames/ pre sec)
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