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dsp/cpu.c: Android: fix crash on non-neon arm builds

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add proper cpu-detection for Android targets

Fixes issue #118 (and is a better solution for #117).

based on patch by pepijn vaneeckhoudt

Change-Id: I6b00ea6d51ca658ccf6a3d55b87b99c01c6805be
This commit is contained in:
James Zern 2012-05-04 12:34:53 -07:00
parent 9a214fa112
commit 834f937f3c
2 changed files with 18 additions and 0 deletions
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3
Android.mk
View File

@ -60,7 +60,10 @@ LOCAL_C_INCLUDES += $(LOCAL_PATH)/src
ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)
LOCAL_ARM_NEON := true
endif
LOCAL_STATIC_LIBRARIES := cpufeatures
LOCAL_MODULE:= webp
include $(BUILD_STATIC_LIBRARY)
$(call import-module,android/cpufeatures)

15
src/dsp/cpu.c
View File

@ -11,6 +11,10 @@
#include "./dsp.h"
#if defined(__ANDROID__)
#include <cpu-features.h>
#endif
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
@ -53,6 +57,17 @@ static int x86CPUInfo(CPUFeature feature) {
return 0;
}
VP8CPUInfo VP8GetCPUInfo = x86CPUInfo;
#elif defined(__ANDROID__)
static int AndroidCPUInfo(CPUFeature feature) {
const AndroidCpuFamily cpu_family = android_getCpuFamily();
const uint64_t cpu_features = android_getCpuFeatures();
if (feature == kNEON) {
return (cpu_family == ANDROID_CPU_FAMILY_ARM &&
0 != (cpu_features & ANDROID_CPU_ARM_FEATURE_NEON));
}
return 0;
}
VP8CPUInfo VP8GetCPUInfo = AndroidCPUInfo;
#elif defined(__ARM_NEON__)
// define a dummy function to enable turning off NEON at runtime by setting
// VP8DecGetCPUInfo = NULL