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/rockchip-linux_mpp/mpp/hal/common/av1/
H A Dfilm_grain_noise_table.c225 RK_U16 random_reg = seed; in InitRandomGenerator() local
226 random_reg ^= ((luma_num * 37 + 178) & 255) << 8; in InitRandomGenerator()
227 random_reg ^= ((luma_num * 173 + 105) & 255); in InitRandomGenerator()
228 *random_register = random_reg; in InitRandomGenerator()
235 RK_U16 random_reg = *random_register; in UpdateRandomRegister() local
236 bit = ((random_reg >> 0) ^ (random_reg >> 1) ^ (random_reg >> 3) ^ in UpdateRandomRegister()
237 (random_reg >> 12)) & in UpdateRandomRegister()
239 *random_register = (random_reg >> 1) | (bit << 15); in UpdateRandomRegister()