[FFmpeg-devel] [PATCH] avutil: runtime cpu detection for mips

Shivraj Patil Shivraj.Patil at imgtec.com
Wed Sep 30 16:21:18 CEST 2015

On Wed, Sep 30, 2015 at 07:03:46PM +0530, shivraj.patil at imgtec.com wrote:
> From: Shivraj Patil <shivraj.patil at imgtec.com>

> +static int get_cpuinfo(uint32_t *hwcap) {
> +    FILE *f = fopen("/proc/cpuinfo", "r");

under qemu i get this:

cpu_flags(raw) = 0x00000000
cpu_flags_str(raw) =
cpu_flags(effective) = 0x00000000
cpu_flags_str(effective) =
threads = 1 (cpu_count = 12)

IIUC this disables all cpu extensions
is that intended ?
(we currently only have loongson hardware to test so this would mean  an end to testing imgtec specific mips optimizations)

Shivraj:- cpu detection will not work for qemu, however we have tested it on mips hardware at our end.

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