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avcodec/mediacodec_wrapper: get api level via NDK method

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android_get_device_api_level() is a static inline before API level
29. It was implemented via __system_property_get(). We can do the
same thing, but I don't want to mess up with __system_property_get.

Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>
This commit is contained in:
Zhao Zhili
2023-01-10 19:30:07 +08:00
parent 8f35ee8240
commit 8586540ad1
1 changed files with 18 additions and 0 deletions
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18
libavcodec/mediacodec_wrapper.c
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@@ -2513,6 +2513,21 @@ FFAMediaCodec* ff_AMediaCodec_createEncoderByType(const char *mime_type, int ndk
int ff_Build_SDK_INT(AVCodecContext *avctx)
{
int ret = -1;
#if __ANDROID_API__ >= 24
// android_get_device_api_level() is a static inline before API level 29.
// dlsym() might doesn't work.
//
// We can implement android_get_device_api_level() by
// __system_property_get(), but __system_property_get() has created a lot of
// troubles and is deprecated. So avoid using __system_property_get() for
// now.
//
// Hopy we can remove the conditional compilation finally by bumping the
// required API level.
//
ret = android_get_device_api_level();
#else
JNIEnv *env = NULL;
jclass versionClass;
jfieldID sdkIntFieldID;
@@ -2522,5 +2537,8 @@ int ff_Build_SDK_INT(AVCodecContext *avctx)
sdkIntFieldID = (*env)->GetStaticFieldID(env, versionClass, "SDK_INT", "I");
ret = (*env)->GetStaticIntField(env, versionClass, sdkIntFieldID);
(*env)->DeleteLocalRef(env, versionClass);
#endif
av_log(avctx, AV_LOG_DEBUG, "device api level %d\n", ret);
return ret;
}