184     RK_U32 x, y;  in mpi_rc_calc_psnr()  local
201         for (x = 0; x < width; x++) {  in mpi_rc_calc_psnr()
202             tmp = enc_buf_y[x + y * enc_hor_stride] -  in mpi_rc_calc_psnr()
203                   dec_buf_y[x + y * dec_hor_stride];  in mpi_rc_calc_psnr()
270     int x = 0;  in ssim_4x4x2_core()  local
277             for ( x = 0; x < 4; x++  ) {  in ssim_4x4x2_core()
278                 a = pix1[x + y * stride1];  in ssim_4x4x2_core()
279                 b = pix2[x + y * stride2];  in ssim_4x4x2_core()
300     int x = 0;  in calc_ssim()  local
312             for ( x = 0; x < width; x += 2  )  in calc_ssim()
313                 ssim_4x4x2_core(&pix1[4 * (x + z * stride1)],  in calc_ssim()
314                                 stride1, &pix2[4 * (x + z * stride2)],  in calc_ssim()
315                                 stride2, &sum0[x]  );  in calc_ssim()
317         for ( x = 0; x < width - 1; x += 4  )  in calc_ssim()
318             ssim += ssim_end4(sum0 + x, sum1 + x,  in calc_ssim()
319                               MPP_MIN(4, width - x - 1));  in calc_ssim()
946 #define CHECK_RET(x)    do { \  argument
947                             if (x < 0) { \