ff_libopenh264_trace_callback   35 libavcodec/libopenh264.h void ff_libopenh264_trace_callback(void *ctx, int level, const char *msg);
ff_libopenh264_trace_callback   68 libavcodec/libopenh264dec.c     callback_function = ff_libopenh264_trace_callback;
ff_libopenh264_trace_callback  151 libavcodec/libopenh264enc.c     callback_function = (WelsTraceCallback) ff_libopenh264_trace_callback;