2012-10-23, 22:01
Hello.
I have an iPhone 3GS with iOS 6 (jailbreak -old bootrom) and I've recently tried latest stable XBMC v11 and some of your monthly and nightlies versions of v12.
I have some questions regarding information about hardware acceleration and software decoding of XBMC and iPhone 3GS
1) Is hardware acceleration supported on iPhone 3GS the same way as on A4, A5 and other better CPUs ? When you first released XBMC for iOS, you didn't mention iPhone 3GS, only iPad, iPod and iPhone 4.
2) The hardware decoding performance of 3GS (not the software based on CPU) is the same as of iPhone 4, 4S, 5 ?
3) Is there a name of this hw decoder ? (the chip I mean).
Is it inside the CPU (ARM Cortex A8) or GPU (Power VR) ?
Does this hw acceleration has anything to do with NEON SIMD instructions inside Cortex A8 ? (It shouldn't, I think)
4) Is there any chance by using VideoToolBox to accelerate anything else than H.264 in hardware for iOS (on any iDevice) ?
5) Does the software version of video decoder (ffmpeg) used by XBMC utilize NEON SIMD instructions ?
6) For me v11 is very stable but after 40 sec of playing anything in hardware acceleration, starts stuterring even on easy 720p clips. Alpha versions of v12 don't have this problem, but they are crashing often.
Thanks in advance for your replies !
I have an iPhone 3GS with iOS 6 (jailbreak -old bootrom) and I've recently tried latest stable XBMC v11 and some of your monthly and nightlies versions of v12.
I have some questions regarding information about hardware acceleration and software decoding of XBMC and iPhone 3GS
1) Is hardware acceleration supported on iPhone 3GS the same way as on A4, A5 and other better CPUs ? When you first released XBMC for iOS, you didn't mention iPhone 3GS, only iPad, iPod and iPhone 4.
2) The hardware decoding performance of 3GS (not the software based on CPU) is the same as of iPhone 4, 4S, 5 ?
3) Is there a name of this hw decoder ? (the chip I mean).
Is it inside the CPU (ARM Cortex A8) or GPU (Power VR) ?
Does this hw acceleration has anything to do with NEON SIMD instructions inside Cortex A8 ? (It shouldn't, I think)
4) Is there any chance by using VideoToolBox to accelerate anything else than H.264 in hardware for iOS (on any iDevice) ?
5) Does the software version of video decoder (ffmpeg) used by XBMC utilize NEON SIMD instructions ?
6) For me v11 is very stable but after 40 sec of playing anything in hardware acceleration, starts stuterring even on easy 720p clips. Alpha versions of v12 don't have this problem, but they are crashing often.
Thanks in advance for your replies !